Injection molding machine energy-saving programs - waste heat recovery process

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On our planet, every day was taken away by the immense heat of the flue gas, environmental pollution is staggering. How injection molding machine industry energy conservation, improve the working environment, reduce the temperature of the injection molding machine shop is a concern. Waste heat recovery injection molding machine is an important aspect of energy conservation work, if all of the flue gas heat recovery are performed, its cost is very impressive.

1. Energy Saving Injection Molding Machine

Existing injection molding machine is equipped with systems for plastic dehumidifying dryer, electric heating mode to provide heat, carry a certain amount of heat from the exhaust outlet air heat drying drums, when this part of the heat directly into the workshop, a workshop area will increase the dust content in the air and affect the operation of the health of workers, on the other hand will increase energy consumption and increase the financial burden on businesses.

In the case of lack of prior art, this article provides an injection machine heat recovery heat cycle apparatus, melt rubber tube around the heating section to install waste heat collection device when utilizing the heat of the work dried plastic tub and dried dehumidifying.
Have some water, dust and hot air is discharged from the injection molding machine, hot air circulating through the duct into the dust dehumidifying apparatus, processes, through the hot part of the subsequent adjustment of fan heat, provide the impetus for an injection molding machine heat so as to generate the flow loop, after treatment into the injection molding machine, and then circulated through the plastic barrel and heat entering the heat further heat treatment; another portion of hot air and the heated gas 2 have been an injection molding machine, which can adjust the temperature of the injection molding machine within through which air flow to ensure that the actual injection molding machine with a set temperature, respectively. When the temperature inside the injection molding machine than the set low signals, increasing the output of wind speed increase in driving action, into the injection molding machine, the air temperature increases, the temperature rise inside the injection molding machine, when in the injection molding machine temperature than the set temperature is high, a signal, reduce speed and reduce the output of wind, thus reducing high-temperature gas into the injection molding machine, the temperature of the injection molding machine is lowered.

2. Injection molding machine waste heat utilization Problems and Suggestions

These problems are:

(1) of the injection molding machine processing enterprises throughout the country, but the equipment skill levels, a lot of business equipment needs further transformation;

(2) ban plastic industry voices, but in the rural market is still widely used plastic products, cutting costs has become a top priority for enterprise development;

(3) Due to the dissemination of information channels and lack of funds business, which greatly restricted the lot to promote this technology, many enterprises lack advanced energy-saving technologies and mechanisms for clean development mechanism, advanced technology service providers have no way to understand the situation of enterprises;

(4) injection molding machine high temperature waste heat utilization technology after years of development is now more mature, successful cases also showed its economic benefits, but the huge potential of low temperature waste heat utilization injection molding machine needs to be further developed.

Suggestions are:

(1) injection molding machine manufacturing enterprises to achieve management and use of the "right to use scientific management, careful maintenance, regular maintenance, reasonable lubrication, planned maintenance, improve equipment availability, the equipment in good condition";

(2) pollution is the most important energy consumption, thermal energy-saving injection molding machine as one of the main force, it should be introduced more active policy to give appropriate financial support, guide enterprises in the injection molding machine industry to play an active heat recovery effect;

(3) to carry out injection molding machine waste heat resources research and gather relevant advanced technology, management and strengthen information dissemination and other cases, strengthen the research of low temperature waste heat utilization technology of injection molding machines, injection molding machines heat to promote the application of technology.

(4) Recommendation injection molding machine waste heat utilization potential of the enterprise, considering the system as far as possible, the overall improvement, and focus on the refinement of the use of automatic control systems.

3. Economic Benefits

(1) injection molding machine system saving 15% to 35%, saving more than 90% of the dryer;

(2) high temperature 270 ℃ ~ 280 ℃, low temperature -70 ℃;

(3) injection molding machine production workshop temperature drop of up to 3 ° ~ 8 °, the working environment has greatly improved;

(4) reduction of carbon dioxide emissions than the conventional 45% to 50% and no SO2, fly ash, slag, NOx emissions low;

(5) Tensile strength ≥0.02MPa;

(6) corrosion resistance, aging, waterproof, anti-oil, anti-oil pollution, environmental protection, pollution-free;

(7) Easy to install, good service, toughness, flexible bandage;

(8) for different temperatures, the shape of the injection molding machine.

Injection of electrical control system anti-interference

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The so-called interference, that is, other than the useful signal noise to influence the injection molding machine control system to produce,

Injection molding machine injection molding machine interference is divided into internal stakeholders and external interference two kinds of injection molding machines.
Injection molding machine internal interference are:
1, the signal crosstalk between each other
2, components irrational, poor quality components.
3, the adjacent coupling loops.
4, the digital and analog ground impact.
5, parasitic oscillation.
Injection molding machine external interference are:
1, electromagnetic interference, including the close vicinity of electrical equipment-off system, passing vehicles, electromagnetic waves.
2, power supply fluctuations.
3, environmental interference, vibration, temperature and humidity.

Internal interference injection molding machine injection molding machine control system manufacturer about, it can be designed to suppress and eliminate as much as possible. Imports of injection molding machines can do, while external interference is random, regardless of structure, generally the source of interference is also difficult to limit, to take precautionary measures only the specific situation.
Injection molding machine external interference coupling are:
1, common impedance coupling. Different from the ground system ground, causing common impedance, it will inevitably interfere with a total impedance coupling.
2, electrostatic coupling. Electric field is capacitively coupled way, fleeing its total interference lines.
3, electromagnetic induction coupling. Due to the presence of a magnetic field mutual inductance between the power lines and signal lines, and in a closed loop system to produce EMF, which is the interference voltage.
4, leakage coupling: mainly due to the coupling capacitance between adjacent wires or between some of the insulation resistance decreases, the interference between the transmitted signal lines via the conductor resistance

Injection molding machine market potential is enormous

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It is understood that Chinese injection molding machine industry plus huge development potential for the rapid growth of the injection molding machine industry has opened up a vast space. Currently in the injection molding machine products, 83% used injection molding machine. In recent years, due to the needs of the automotive, construction, household appliances, food, medicine and other industries growing injection products, and promote the injection molding machine technology development and improvement.

At present, the Chinese injection molding machine mold industry has developed rapidly, the number of injection molding machine mold steel, quality, variety, specifications, performance and put forward higher requirements. In recent years, domestic and foreign production injection molding machine mold steel, production techniques, technology and equipment, quality, variety, etc. have made great progress. With the improvement of the quality requirements of the injection molding machine mold, countries in the original cold-working die steel, hot work die steel base molding machine mold steel and the three categories, have developed a number of new steel grades. Promote the development of the steel mold industrial product development to high-class, high value-added direction.

Chinese experts believe that mold injection molding machines, injection molding machines proportion of Die casting mold industry will continue to increase. With vehicles and construction materials and other products to the direction of lightweight, die-casting mold the number and complexity of life will be raised higher and higher requirements. With the plastic and steel, precision and complexity of the development of plastic and wood parts and products continues to increase, the proportion of injection molding machine mold will continue to improve its accuracy and complexity will also be with a corresponding increase. Plastic mold rapid economic prospects are very broad. Present more varieties of small batch production era, the 21st century, this mode of production accounted for the proportion of industrial production will reach more than 75%. Thus, on the one hand is the use of plastic cycles, on the other hand pattern changes frequently, asked mold production cycle as short as possible. Therefore, the rapid economic development of the plastic mold will be more cause for concern. Analysis of Chinese injection molding machine mold Status and trends can be seen, along with the use of advanced technology, China's mold injection molding machine has been rapid development. However, compared with many developed countries, China is still a big gap, a lot of the injection molding machine mold design and manufacturing process also need to refer to foreign experience, a lot of sophisticated, high-end, complex molds also need to import.

Therefore, China is now the basis of the level of research on the blend of other advanced technologies to further strengthen the Chinese injection molding machine mold innovation, investments in technology, create more economic and social benefits. Injection molding machine die industry as China's manufacturing development of the support industry, with the support of all levels of government, various manufacturing industries and enterprises, and achieved rapid development. According to the International Association Secretary-General Luo Baihui mold, Guangdong province is China's manufacturing industry in the manufacture of products plays a decisive role. Not only led to the development of injection molding machine mold industry in Guangdong, but also promoted the development of China's mold industry injection molding machine. China is a big country mold injection molding machines, injection molding machine mold industry output value of about 1.8 trillion yuan, ranking first in the world of injection molding machine mold industry.

Large injection molding machine to make good use confidential data breakthroughs in core technologies

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Large injection molding machine to make good use confidential data, we need to break through the core technology categories

The first is how the injection molding machine data management problems. After the massive injection molding machine machine type data such as time series, spatial and temporal high-speed data acquisition is complete, it needs to survive, this relates to data valid packing, compression, issue placed. Data survive it is to be used, which requires support queries to quickly locate the data application requirements, which in turn is an example of how to establish efficient spatiotemporal data indexing problems.

Better manage data stored, the next question is how to support a variety of analysis. Did people know the actual analysis, the analysis is much more than a bunch of algorithm development issues. Algorithm is only a small part of the work, most of the work is based on the understanding of the business problem to select the data needed to understand the characteristics of the data, and then design an appropriate model and algorithm based on the characteristics. This understanding of the characteristics of intermediate data big machine data is very difficult. Because the machine data can not be an intuitive understanding of the human need to interact with feature projects. In addition, from the perspective of models and algorithms, machine data is often a physical world system of perception results, and the physical world there are many mechanistic principles exist, such as mechanical fields of mechanics, metallurgy fields of chemistry, so the injection molding machine analysis of large-scale machine data requires an organic combination of mechanistic models and statistical models. Another often overlooked issue is data quality problem - how to grasp the quality of the data, how to fix data quality.

Angle talk application, how to more easily access and use of data analysis, especially for experts in the field. In the multi-source heterogeneous data, mask data integration problems associated with such experts in the field do not need to understand the complexity of big data technology and programming.

Promote transition to injection molding machine manufacturing industry 4.0

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"Four focus on" the "four transformations" to promote the injection molding machine manufacturing to industrial change 4.0

Four focus on:

Pay more attention to the injection molding machine of economic growth and social development of balance, coordination;

Pay more attention to lead the development of injection molding machines open a higher level;

Pay more attention to cultivate new economic growth point of the injection molding machine;

More emphasis on strengthening co-ordination with the injection molding machine to stimulate grassroots vitality.

Four changes:

Manufacture of transition from production-based to service-oriented;

Manufactured by artificial intelligence-based to manufacturing-based change;

Transition from low-cost competitive advantage to high-quality competitive advantage;

From extensive manufacturing to green manufacturing.

Faced with the contradiction, injection molding confidential profound understanding and grasp the "four focus" in order to accelerate the innovation of the manufacturing sector to achieve "Four Transformations."

Plastic injection molding machine to solve the problem of air bubbles generated inside the tube

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Plastic pipe extrusion, we often encounter a series of problems. In addition to possible plastic tube surface cracks will appear, black lines, moire phenomenon than we may also encounter inside a plastic tube produced a bubble, then under what circumstances, will produce plastic tube inside the bubble it ?
Plastic pipe inside bubbles, in general, is related to the moisture content of resins and additives. If the water is too high, then the plastic tube pipe bubbles will be porous.

Attention to this problem, we just need the moisture content of raw materials is controlled within a reasonable range can be, general raw material moisture content is controlled within 0.3% -0.5% range. Injection molding machine in a high speed mixer can exclude only the water portion of the raw materials compounded when, at the same time when we store the raw material for stacking the choice of location is to be noted that, especially in the rainy season should pay attention to prevent material moisture. Damp PVC resin can not directly fire baked, in order to avoid thermal decomposition of the resin, the baking, if desired, add some stabilizer in advance. After high speed mixing materials in storage after the rainy days, it must first be used only after drying.

If we find the injection molding machine plastic tube inside the bubble, then the die temperature should be slightly lower at the point of extrusion speed can not too fast, in order to eliminate air bubbles inside the plastic tube. And, while cooling in shape when flash is not suitable for rapid cooling, in that case, plastic pipe will be prone to bubbles.

Of course, this is the main reason for the plastic pipe extrusion produce bubbles, does not rule out other causes. There also may be due to excessive or inappropriate financial material inflatable plastic exhaust pipe leading to the residual gas, so treat specific conditions!
When plastic hose appears scorch marks, wrinkles, mainly from the extrusion process. Extruded plastic tubes extruder screw diameter of 45-65mm, an aspect ratio of 25, a compression ratio of 3-4.

Plastic pipe extrusion, plastic hose extrusion temperature is generally higher than the hard plastic pipe extrusion temperature is lower. If the die temperature is too high, then the injection molding machine plastic pipe appears scorch phenomenon; if the injection molding machine die temperature is too low, then the plastic tube surface brightness difference phenomenon.

If the extruder screw speed is too slow, then the plastic tube surface prone to moire; if pulsation extrusion, injection molding machine plastic pipe so prone to the phenomenon of bamboo-like; if the injection molding machine screw speed is too fast, then the surface of the plastic pipe mouth friction between the mold overheating can cause the product surface scorch phenomenon. Therefore, the screw speed can be selected within 20-40r / min range.


Similarly, if you pull too fast or too slow will make the horizontal and vertical injection molding machine plastic pipe contraction increased, the surface will be prone to wrinkles. Thus, pulling speed according to the different diameter plastic pipe, make appropriate adjustments. For example, the diameter of 9-16MM plastic tube traction line speed can be selected within 8-12m / min range; 19-25mm diameter plastic tube traction line speed can be selected within 4-8m / min range.

Plastic pipe extrusion, we want to pay particular attention to the injection molding machine die temperature, extruder screw speed and traction speed and other factors, so as to prevent the injection molding machine plastic pipe extrusion scorch the surface, the appearance of wrinkles.

Britain injection molding machine industry after de European concerns about workers' rights and the cost of

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After the British off in Europe, the country's injection molding machine industry giants are worried about the potential impact of cost reduction with increased imports of EU workers' rights brought.

Britain injection molding machine Industry Alliance General Philip Law said:. "Exchange rate fluctuations after the referendum so that fears of imported raw materials with the injection molding machine equipment costs increased significantly, which will seriously affect the competitiveness of investments in this industry is very dependent on skilled EU migrant workers, we must ensure that their working conditions are not affected in any way. "

Britain vertical injection molding machine industry in Europe after the removal of labor rights concerns with costs

Peter Atterby Lexus general manager admitted because the current uncertainty, and therefore can not not recognize the situation in Europe after the removal very difficult. His statement: "We can not really attached to the EU's policy of free trade can be carried out with the standard with the EU this is what I think Europe may not be able to bring people off the problems caused by a certain influence, our employees also?. Europeans, they are very valued member of our team, but they claimed to possess the future was uncertain. "

Keith Freegard Polymers Axion general manager position, workers from Eastern Europe in the past 15 years, the UK's vertical injection molding machine industry has made a considerable contribution. It adds: "Many processors with maintenance engineers regard the family moved to the UK, this is a positive way to contribute to local economic development, at present, in my opinion, how to deal with these kind of workers worried about is the moment the most important thing."

Summit Systems COO Keith Bailey for investors worried about the moment, its statement:. "There are a lot of customers are hesitant to invest in the face before, we will want to stop to see what happens."

Material dealers Plastribution also due to fluctuations in exchange rates, its business is affected. Mike Boswell general manager position: "with the expected exactly the same, with the depreciation of the euro against the dollar, pound, resulting in vertical injection molding machine of plastic raw material prices, which in July sales is very significant."

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Our plastic trays injection molding machine market outlook bright

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With plastic tray products diversification growing market demand, the upgrading of the plastic tray vertical injection molding machine equipment is also growing fast. Early plastic tray vertical injection molding machine is fully hydraulic, because environmental protection with the need for energy conservation, as well as a significant decline in mature application servo motor with prices in recent years, all-electric vertical injection molding machine more precision, but only phase different than the two types of power source characteristics of vertical injection molding machine, will it be possible to ascertain the technical direction of the plastic tray vertical injection molding machine.

After China's accession to the World trade Organization (WTO), foreign machinery manufacturing industry to accelerate the transfer to China, some of the world-renowned plastic tray vertical injection molding machine business, such as Germany Demag, Krupp, Baden Phil, Japan's Sumitomo Heavy Industries the company has "entered" our country, and some further set up a technology center. Foreign plastic tray vertical injection molding machine manufacturer to enter the vertical injection molding machine industry has brought our country to the development of energy, but also to make China's plastic tray filled with vertical injection molding machine manufacturers with an opportunity to challenge.

Early plastic tray vertical injection molding machine is fully hydraulic, because environmental protection with the need for energy conservation, as well as a significant decline in mature applications with servo motor price, with the diversification of the plastic products market demand is growing, plastic tray stand upgrading injection molding machine equipment is also growing fast. Early plastic tray vertical injection molding machine is fully hydraulic, because environmental protection with the need for energy conservation, as well as a significant decline in mature application servo motor with prices in recent years, all-electric precision plastic tray vertical injection molding machine more electric - hydraulic plastic tray vertical injection molding machine is a hydraulic with electric drive in one of the new plastic tray vertical injection molding machine, which combines high performance with all-electric energy-saving advantages of fully hydraulic vertical injection molding machine, which electric - hydraulic combination of composite vertical injection molding machine has become a plastic tray vertical injection molding machine technology development.

Vertical injection molding machine of plastic tray enterprises are mainly distributed in the southeast coast of the Pearl River Delta, among the most fierce momentum of development in Ningbo, has now become China's largest production base of the vertical injection molding machine, the production of total domestic annual output of vertical injection molding machine 1/2 or more, accounting for 1/3 of the world's vertical injection molding machine. our plastic tray vertical injection molding machine has developed rapidly, producing more varieties, basically domestic supply of plastic raw materials with plastic tray products processing, forming the generally required technical equipment, individual products also entered the world, but now industrialized countries such as Germany, Japan, Italy comparison, China's plastic tray vertical injection molding machine there is a gap, the main table at present less variety, high energy consumption, the level of control low, unstable angles.

In the world of environmental protection, such as energy consumption, noise, leakage control the angle of the increasingly stringent requirements of energy saving has been achieved on the Study of electro-hydraulic vertical injection molding plastic tray system, there is a large energy loss for a valve-controlled electro-hydraulic system deficiencies , Germany, Japan and other countries to develop a load-sensing type vertical injection molding plastic trays hydraulic control system variable pump with electro-hydraulic proportional valve binding. To further reduce energy consumption, reduce noise, and the latest generation of plastic pallets vertical injection molding machine is driven by a hydraulic pump for the power source Variable-speed motors in packing, cooling and idling conditions continued low speed to achieve energy saving, noise reduction targets.

Use plastic tray vertical injection molding machine synchronization signals and electrical control system, according to the injection molding of plastic pallets process requirements, the electro-hydraulic proportional control system, modeled as load control and tracking system, so that the pump motor speed vertical injection molding machine with plastic tray hydraulic flow required to work with pressure proportional to the product, will be transformed into a traditional quantitative pump variable frequency pump, so that the return flow to minimize spill, no high-pressure throttling energy loss, and thus the traditional high-pressure throttling the "energy-consuming" vertical injection molding machine upgraded without high pressure throttling of "energy-saving" vertical injection molding machine, energy-saving plastic tray vertical injection molding machine in addition to the main characteristics of energy-saving features, in pursuance of its energy conservation principle, also has additional series of advantages.

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Injection molding machines Operation

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Injection molding machines can fasten the molds in either a horizontal or vertical position. The majority of machines are horizontally oriented, but vertical machines are used in some niche applications such as insert molding, allowing the machine to take advantage of gravity. Some vertical machines also don't require the mold to be fastened. There are many ways to fasten the tools to the platens, the most common being manual clamps (both halves are bolted to the platens); however hydraulic clamps (chocks are used to hold the tool in place) and magnetic clamps are also used. The magnetic and hydraulic clamps are used where fast tool changes are required.

The person designing the mold chooses whether the mold uses a cold runner system or a hot runner system to carry the plastic from the injection unit to the cavities. A cold runner is a simple channel carved into the mold. The plastic that fills the cold runner cools as the part cools and is then ejected with the part as a sprue. A hot runner system is more complicated, often using cartridge heaters to keep the plastic in the runners hot as the part cools. After the part is ejected, the plastic remaining in a hot runner is injected into the next part.

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Plastic injection molding machine industry an urgent need to control the speed of capacity expansion

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With the adjustment of domestic industrial structure, plastic injection molding machine supply pattern transformation, PE in production capacity accounted for five common plastics from second place in 2011 fell to third place in 2015, and gradually to the production of PVC, in five common plastics production capacity in the proportion fell sharply.

2011 PVC production capacity in the proportion of five general-purpose plastics 45%, followed by PE production capacity accounted for 22%, PP production capacity of slightly less than PE, ABS with production capacity accounted for PS were 6% with 5%. 2015 the annual PVC capacity expansion speed is reduced, while the PP capacity expansion faster, PVC production capacity accounted for reduced to 36%, PP production capacity accounted for 28% of the added value, increase the proportion of PE production capacity to 24%, ABS with PS capacity expansion is relatively slow, ABS with PS capacity accounted for 6% of domestic production as well as comprehensive health imports, calculated five general-purpose plastic self-sufficiency rate. Overall domestic production capacity to keep the amplification, from 2011 to 2015, five general-purpose injection molding machine plastic self-sufficiency rate has increased, PVC self-sufficiency rate increased by 8% to 99%, PP self-sufficiency rate rose 11-78 percent, ABS self-sufficiency rate increased by 10% Zhi 62%, PS self-sufficiency rate increased by 7% Zhi 73%, PE self-sufficiency rate increased by 1-58%. PVC with PP high self-sufficiency rate, mainly due to the PVC with PP production capacity is large. PE PVC self-sufficiency rate is less than with the PP, the main if restrictions on domestic supply structure, more reliance on certain imports, mainly divided with the price dependent on product type dependent, dependent on the price of the main Middle East if the low-end products a price advantage, product type dependent If the main South Korea, Japan and other high-quality bias, the presence of domestic supply gap in the product. ABS, PS domestic consumption is limited, with the amplification domestic production capacity, self-sufficiency rate is gradually increased.

Plastic injection molding machines from five common marketing model look, PE with PP direct relatively high rates were above 40%, while ABS with PVC direct relatively low rate of self-sufficiency rate is not higher than 30%, if all the main injection machine plastic products customer groups, differences in financial capacity and customer distribution center.

2016 Central Economic Work Conference stand to production, to inventory tasks, PVC to productivity developments are more significant, while the PP capacity expansion plan is still more, if not controlled in time amplification rate PP production capacity, PVC currently is PP tomorrow. In terms of relative PP, PE of capacity expansion rate is relatively low, PE with PP larger spread, the spread in the East China 1800 yuan / ton. From the price level five common plastics injection molding machine the current point of view, the price is inversely proportional with the capacity, ABS production capacity is relatively small, capacity expansion more slowly, ABS prices higher than 10,000 yuan / ton; while PVC production capacity of the largest domestic supply a larger pressure surface, PVC price less than 6000 yuan / ton.

China's economic growth into the shift of the speed reducer, domestic demand for commodities affected the domestic commodity supply growth should be synchronized adjustment. But only control the speed of capacity expansion, product prices can be relatively strong, otherwise only the excess deeper quagmire, the market is hard for better performance. The plastics industry is imperative to control the speed of capacity expansion, adjusting the industrial structure, according to end-user demand, on-demand production, enhance the technological content of products, increase the added value of products.

Physical properties of thermoplastic - injection molding machine

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Can the physical characteristics of plastic injection molding machines after the thermoplastic molding their secondary processing into thermoplastics and thermosetting plastics, this process is suitable only for injection molding machines available for secondary processing of thermoplastics, such non-crystalline plastic separator crystallinity categories. Highly crystalline plastic mechanical strength, heat resistance, but poor transparency, a plastic such as polyethylene, polypropylene, polybutene-1, poly-4-methylpentene-1, polyoxymethylene, polyamide, polyester, polyvinylidene chloride, fluorine plastic, chlorinated polyether. Non-crystalline plastic mechanical strength is poor crystalline plastic, but the heat resistance and transparency, this kind of plastic polyvinyl chloride, polystyrene, ABS, PMMA, polycarbonate, polyphenylene oxide, polysulfone and the like.

Different types of plastic, although having some similarities, but personality differences, be sure to do the proper selection of products or aids simulation time can produce compliant products. The temperature of the distillation column by gasoline gasoline temperature adjustment control back flow display by the rotameter. Light diesel gasoline distillation bottoms.

Injection molding machine thermoforming mold thermoplastic molding plaster molds and tin mold needs. Only the transition plaster mold is a mold, the final mold is manufactured of tin.

Because gypsum hemihydrate and water after water into gypsum (CaSOO), gypsum plaster water solubility than half a much lower solubility, gypsum constantly condense, and hemihydrate gypsum continues to dissolve, eventually all turned into gypsum, in the process of change, all the excess water to evaporate. Because the condensation was gypsum volume increased by 1%, so with plaster made of male and female mold, the inner and outer surface smooth, easy to crack tin mold.

Tin melting point of 231.85 ℃, ordinary tin ingots in the crucible of iron melts very easily, and most of thermoformed plastic optimum molding temperature of 120 ~ 220 ℃, so the male and female molds made of tin with a qualified majority of the heat molded plastic processing, for polysilicate, nylon, oriented polyester, polysulfone plastic, optimum molding temperature exceeds 231 ℃, is available, lead, tin, antimony alloy (80% lead, 10% tin, antimony 10% ) made mold forming. Consider shrinkage plastic injection molding machine, the design of the die size to be bigger, so that the final size made accurate parts.

Colored plastic injection molding machine in order to make plastic products with a desired color can be added organic dyes or inorganic pigments in plastics, the former mostly with good miscible resin suitable for transparent products manufactured; the latter in the resin dispersion very good, the system is suitable for transparent products.

Commonly used organic dyes are: 1) azo dyes (including insoluble and poorly soluble), such as aniline yellow, light yellow, golden red C, Li Rubine; 2) phthalocyanine pigments such as sodium Costello Blue Mongolia , Mona Los Tello green.

Commonly used inorganic pigments are: 1) class chrome yellow, the color with the mixture in an amount depending, PbCrO higher the content of the deeper the color, there are lemon yellow, orange chrome yellow and red chrome molybdenum; 2) cadmium pigments cadmium yellow, cadmium red, cadmium selenide; 3) iron oxide red iron oxide, iron oxide yellow, iron oxide black; 4) class titanium dioxide, barium titanium white, titanium white calcium; 5) carbon black. Above dyes and pigments are easy to buy.

The method of plastic mixed colors, with red, yellow and blue as the primary color, with a group called the secondary color hue to another color, other colors redistributed between the secondary colors called tertiary colors.

Various components with different content in plastics, color hue, lightness and purity are also different. For example: secondary colors: red + yellow = orange red apricot red + blue = purple Qinglian color dark pink yellow + blue = green grass green sky blue light color green emerald three color: orange + purple = brown, purple + green + orange = = gray olive green color, blue + yellow + red = brown. In order to improve the plastic and the filler imparting new properties to plastics, usually filling to a powder in a plastic or fibrous filler. Plus plastic clay, mica, asbestos, talc, etc., can improve the rigidity of the plastic, temperature resistance; plastic clay was added after the sintering can be improved insulation; plastic paint can be increased by adding wood flour affinity; plastics Carbon Black can improve the aging properties of plastic; plastic plus copper, aluminum can improve the thermal and electrical conductivity.

Injection molding machine production apparatus of the present process of self-made culverts induction furnace, induction furnace is made based on the principle of electromagnetic induction. Furnace surface is bounded to the heating coil is placed in the furnace core culverts below the surface to be heated tin mold placed over the surface of the furnace. Furnace surface is non-permeable sheet (asbestos or ceramic plate). In a multi-strand copper wire wound heater wire to circle through frequency or high frequency alternating current. When the furnace is not placed face to be heated tin mold, the cooking surface side alternating magnetic field of the magnetic circuit is substantially air magnetic resistance greatly. At this point only a small heating coil in the no-load current. When tin mold to be heated placed on the induction furnace, most of the air had been replaced by a soft magnetic iron magnetic circuit reluctance is reduced, an alternating magnetic field greatly enhanced.

Alternating magnetic field to generate a lot of eddy currents die tin, tin obtained heat mode, temperature rise. Make melt molding plastic injection molding machine. The size of the induction furnace power depends on the size and processing aids may be ,, generally designed to 1kW and 2kW two, the power supply system can be designed as a single-phase or three-phase type two kinds.

The production process for the production of a Fresnel lens as an example. Fresnel lens is an optical element having a stepped surface. Adjacent ladder smaller the pitch, the more accurately meet the conditions reduce the residual aberrations at a smaller lens thickness. Stepped up to the smallest pitch 0.05mm, the ladder can be concentric, spiral or parallel grooves. The first two cases are part of a stepped cone or a sphere. Case 3 is a planar or cylindrical portion.

Plastic Fresnel lens made of poly methyl methacrylate (PMMA).

1) Select the flatness of the glass piece is placed on the platform, the Fresnel lens mold or wood stick to the original flat glass, cardboard and used to do a paper circle around.

2) with a camel hair brush to remove dust on the Fresnel lens ring, and in its coat of thick soapy water.

3) The humidity adjusted too uniform hemihydrate gypsum poured circle paper, dried, torn paper circle Serve plaster mold nightside.

4) on the plaster mold nightside slightly trimmed, coated with thick plaster male mold translated into soapy water.

5) the plaster male mold kerosene smoked black circle around on paper, translated into tin die.

6) The colorless, transparent plastic granular fill in the blank die in tin, in the induction furnace pressure to a flat stainless steel plate, adjusting the current heating, which is formed into a Fresnel lens on its surface.

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Injection molding machine enterprises should increase research and development in order to meet domestic market demand

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This year, the domestic market demand increase, which is many manufacturers can not be expected, many manufacturers may also be expected to grow this year, but the growth rate will not be so fast that you can not expand production capacity, which led to so much Unable to grasp the business opportunities, energy-consumption statistics based on the country, in the machinery industry is the largest consumption of the injection molding machine, so that the major domestic manufacturers are studying the latest energy-saving injection molding machine, a great focus on the top, so that no energy to respond to market demand and expand production capacity, but this way, but also to the injection molding machine business a wake, at present, the local domestic market, there is still much room for development, as long as developed the most advanced machinery, but also to catch up .

The most advanced research, work can be the most powerful injection molding machines, injection molding machines has been a goal pursued by enterprises, in order to long-term sustainable development, and only manufactured their own competitive products to competition with the developed countries, otherwise only ever in the international small low-grade injection molding machine based, business has always been to this goal.

The latest research and development of energy-saving injection molding machine system, in response to the number of strokes International Energy consumption is now growing domestic pollution, and in the machinery industry, injection molding machine is the most energy-consuming machinery, it developed the latest energy-saving system is indispensable small, but also the future development trend of the latest study who come out, who will be able to stay ahead in the competitive market.

http://injection-molding-machine.tayu.cn/injection_molding_machine/486.html

How injection molding machine into the European market

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/475.html
    Over the first half of 2016, various statistics have recent results, we have just seen in the export industry of the injection molding machine which, it is still mainly in emerging markets, followed by the United States, and indeed less share in the European market it was small and not yet a country which content companies say can enter the European market, in the end is what causes the European market is so difficult to overcome, if we can solve this problem, no condensation of the injection molding machine manufacturer also a new sales market.
    After investigation and analysis by the pass mainly to a few points, 1, in recent years, the European injection molding machine market competition more intense, large-scale injection molding machine manufacturers a lot, whether it is from the quality or functionality, manufacturing processes, in the upscale mechanical industries, better than our injection molding machine, which also caused our products in the European market without competitive ability, a high-quality products can not take the shot, in order to stand out in the fierce competition, the manufacturer of injection molding machines We must maintain absolute leading edge in a particular application area.
    Injection molding machine in domestic sales ahead, injection molding machines, although not much of a development, or guidelines, but we can do it this way, is really meaningful in our Purple machinery industry development and standardization, while domestic production ups and downs of the market fluctuating circumstances, such sales now under environmental stress conditions, leading to the closure of a number of machinery manufacturers, and vigorously develop the fierce speed, earning trend.
    Therefore, the injection molding machine business how to break into the European market, it would be a difficult problem to cross, no one wanted to give up, after all, that is how big a market, then, only enterprises to increase R & D and innovation, in order to create a first-class injection molding machine, can be put to international competitive marketplace.
source:http://injection-molding-machine.tayu.cn/injection_molding_machine/475.html

Injection molding machine mold parts maintenance, where to do

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/474.html
"Each injection mold required for injection molding machine annual maintenance program position, depending on the mold cycle. Here are some maintenance tips injection molding machine mold parts, allowing each user to ensure that the injection molding machine hot runner mold, heating effective runner, guide posts and thimble, molding inserts, such as mold components to prevent accidents from happening.
1. Check whether the injection molding machine at the aeration holes have early warning of rust or damp phenomenon
If you find the hot runner near the discharge vent rust or damp phenomenon, it means that internal condensation, or water may be broken in the injection molding machine. Damp phenomenon will lead to a fatal short circuit heater. If the injection molding machine is not running endlessly throughout the year, we need to shut down in the evenings or weekends, then the probability of occurrence of such condensation increases.
2. Remember to alert the operator not to heat the nozzle head at the gate of the injection molding machine "clean" out
If the operator happen to see die at the outlet of a small piece of stainless steel, there may be a point nozzle assembly. "Clean up" out of this seemingly impeding things often ruin head hot mouth. In order not to damage the injection molding machine hot mouth, please before taking action to confirm the type of nozzle head hot runner system, and to ensure that all operators are well trained and can identify different types of mouth own head contact.
3. The injection molding machine sliding stop button
For the year endlessly running machine, this work should be done once a week. And the end is a very good opportunity to give these parts a routine lubrication and maintenance.
4. The resistance value of the cross-validation of the injection molding machine heater
You should start using the heater when it has been measuring its resistance value, it is the end of the year again, when measured and compared. If the resistance values ​​are ± 10% of the float should consider getting a replacement heater to ensure that it does not fail at the critical moment of the production process. If it has never been measured initial resistance value, so now measured once, and the resulting value is used as a reference for future examination of the data when the heater.
5. Check the injection molding machine and injection molding machine guide pin guide bush whether there are signs of wear
Looking for scratches or abrasions and other traces of mold parts that wear due to lack of lubrication caused. If traces only just appear, you can also give the injection molding machine and injection molding machine guide pin guide sleeve plus lubricant to prolong its life. If wear is very serious, it should be replaced with new parts up. Otherwise, the cavity and core portions may not be a good fit, resulting in different parts of the cavity wall Bohou.
6. Check the flow of water injection molding machine
Connect a hose in an injection molding machine at the exit of the waterway, to let the water through the pipes to the bucket. If you do not clear out of the water or the color, there might be rusty phenomenon, which means that the water is not smooth blockage somewhere. If you find that these issues will be drilled through all the pipes again (or you take any of the methods most commonly used to clean up), in order to ensure the smooth flow. Improved plant's water treatment system that can prevent the emergence of various problems caused by the rust and blocking future.
7. Clean the injection molding machine thimble
After a year's time, thimble and a film due to gas accumulation of impurities becomes dirty. Mold cleaning agent recommended some good cleaning every 6-12 months. Clean, and then coated with a layer of lubricant on the thimble to prevent scratches or breakage.
8. Check whether the hot mouth radius fracture region
Fracture is left in the machine loose hot mouth hardened plastic debris by clamping force from the cartridge assembly in the forward injection caused. Cause of the problem is also possible that the centerline is not aligned. When the fracture was found, to consider both possibilities. If you have suffered damage severe enough to prevent leakage when the petals (a term used by the previous user mold means between the thermal head in the mouth of the guide sleeve and the emergence of machine plastic leak), it should be replaced sprue bushing.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/474.html

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Injection molding machine operating cost comparison: USA VS China

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/468.html
    Recently published an official Plante & Moran PLLC Company in the management report of the Forum, said that although the United States injection molding machine operating costs than China, but the United States thanks to stable energy prices and energy costs and China's rising wages, the gap between the two countries shrinking.

    Ted Morgan, senior consultant manager at the accounting and management consulting firm said it expects operating costs of the injection gap will continue to narrow. China's price advantage more displayed on small tonnage vertical injection molding machine. In terms of large-tonnage injection molding machines, with the United States is very close.

    Plante & Moran company of its 2013 North American plastics industry survey said the hourly cost of the machine data further indicate that automation will help reduce China's low labor costs of the main advantages of industry consensus.

    Morgan said the key lies in the degree of automation vs. die after how much amount of work there, as well as investment products, the number of labor force.

    Morgan said that Mexico on small tonnage injection molding machines cost price between the United States and China, the United States large-tonnage machines and roughly. North America will become a powerful basis for production in Asia back to shore.

    Plante & Moran firm to represent the United States with Indiana injection molding machine operating costs. As the representative of China in Shanghai. In a 200-ton injection molding machine and a 2013 Digital 3000 t injection molding machine for comparison. These figures include only the injection molding machine operating costs per hour. Other services not included in the cost of Chinese production, such as transportation and supply chain extension costs incurred.

    Two points are energy and labor. China and Mexico real estate costs are also rising.

    China 200 tons injection molding machine at rates greater advantage, 35% lower than the US dollar 37.35 per hour, vs. US $ 50.40 per hour Indiana. The main reason is that in the small-tonnage injection molding machines, labor costs a large proportion of total costs, so the Chinese advantage.

    Morgan said the Indiana high labor costs than China high utility costs.

    2010--2013 years, Shanghai's hourly earnings rose by 76.5%. US labor costs are relatively stable. But Morgan cautioned that not exaggerate this trend. He pointed out that Indiana labor costs are still 2.5 times that of Shanghai.

    The case of 3000 tons injection molding machine is different, only 12.5% ​​of lower costs in China, Shanghai US $ 157.86 to $ 177.53 per hour vs. Indiana. One reason is that labor costs are large tonnage injection molding machines accounted for only about 30% of total costs, much lower than the proportion of small tonnage injection molding machine. Electricity running expenses occupy large tonnage injection molding machine in a large proportion of China's electricity and more expensive.

    3000-tonnage injection molding machines are also other more important factors in terms of cost.

    Morgan said there are very different cost of ownership. For large-tonnage injection molding machines, buying a large expenditure, but also requires a lot of fixed assets to provide support, space is also large.

    The US shale gas exploitation are given more advantages the United States to cheaper utility costs and energy costs to operate vertical injection molding machine.

    Morgan said the well-known Chinese utility bills much higher than in the US, but also rapidly rising.

    He believes that the US utility costs will remain stable. With the shale oil and shale gas exploration prospects so optimistic.

    Mexican manufacturing rapid economic development, in 2012, foreign direct investment of $ 12.6 billion in investment in manufacturing more than half. The rapid development of manufacturing industries including aerospace, automotive, electrical and electronics.

    Manufacturing workers' average hourly rate of $ 5 in the Mexican production of 200 tons of injection molding machine more competitive than Indiana - eastern Mexico to $ 45.91, while the US is $ 50.40. But in both 3000 ton injection molding machine is substantially flat.

    Morgan said that the cost of real estate in Mexico is higher than China.

    Morgan said the United States may be the molder Mexico as a "long-term threat" to their business. Mexican population younger, eager to catch up economically. But Mexico still faced with the mold resin production industry and supply base problem of limited, are being taken to enhance the practitioners of engineering and technical skills.

    He said that Mexico's injection molding machine operating costs will continue to be close to US levels.

    Morgan added that China's manufacturing industry will be more supply the domestic market, to a certain extent, to reduce dependence on exports.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/468.html

Injection molding machine manufacturing enterprises should be considered green

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/461.html
    Injection molding machine manufacturer will continue towards automation, energy, intelligence, unmanned other direction. "At present, China's annual imports from Japan, the United States, Germany and other developed countries, precision plastic injection molding equipment nearly $ 2 billion, and imports increased year by year, especially for the processing of precision plastic products, precision injection molding machine. At the same time, our country also encouraged to plastic injection molding equipment enterprises to develop high value-added, high-tech, low-power products, improve the international competitiveness of the industry. "

    China's first self-produced by injection molding machine can be traced back to the 1950s. In 50 years of development, the country has been able to produce most of the models, and to large, very large injection molding machine extends. According to incomplete statistics, China now has 546 domestic manufacturers of plastic machinery, injection molding machines annual accounts for 62.97% of the world's annual production of injection molding machine, the next few years the industry will continue to grow at a CAGR of 7.43%. In recent years, along with well-known international companies to deepen joint ventures and technical cooperation, as well as international preclude the purchase way mechanical parts of the master, China has become the world's superpower presses pieces of production.

    This year is the "five-second" wrap, plastic products market increasingly demanding "green wisdom made" has become a strong tone of the times. From the industry perspective, after several rounds of technical and environmental policies eliminated, the market active injection molding machine manufacturers are very focused on developing a new generation of high-tech equipment, through intelligent control, to meet the current requirements for the production of high-precision. Conventional injection molding machine with a hydraulic drive, with environmental pollution, high noise and energy consumption of the features, such injection molding machines not only serious energy loss, the larger the negative factors still exist on the environment. But its low manufacturing costs, maintenance is also more convenient, therefore, is the highest market share of injection molding machine type.

    However, reporters from shortly before the Chinaplas (Chinaplas China) informed that 80% of the mainstream of injection molding machines are fitted with energy-saving auxiliary equipment, low energy consumption from heating coil servo intelligent control system, from the core member to the construction process each module has been carefully optimized machine performance has been further upgraded. We can say that green has become a symbol of a new era, but also an important factor in the current press manufacturers in the future model planning had to consider.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/461.html

Several categories of domestic injection molding machine

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/449.html
Injection molding machine from the molding material classification:
1, thermoset injection molding. Thermoset injection molding machine injection molding production widely used in high temperature, high strength and high temperature electrical components Electrical Accessories, commodity comprising: ordinary electrical accessories, car cigarette filter supplies, pressure vessels and other mechanical parts.
2, thermo-elastic injection molding. Thermoplastic injection molding machine injection molding materials used in rubber production occupations, commodities comprising: Shoes supplies, wear and seal parts, waterproof plastic parts and plastic injection parts and other elastomer heat
A thermoplastic injection molding. Thermoplastic injection molding machine for injection molding production materials are widely used, including: the usual supplies plastic parts, engineering plastic parts, injection molded parts and other new information.
From the nature of the injection molding machine for classification:
1, the vertical disc injection molding machine, rotary series: vertical injection molding machine rotary disc series can be described as fine pieces of insert molding optimization plan, because the machine can be planned on a second lower mold die or lower die function, compared to embed appropriate messy and labor savings of strengths.
2, direct injection molding machine: This machine is mainly for cable, all kinds of electronic, computer data lines and plug line of injection molding, precision injection molding products require different standards, precision machine job configuration job requirements have changed, the product is suitable for the specific application of the general model specification clamping force from 15T - 300T range, because the manufacturers of specific models capacity modulus and arrangements vary, certain requirements prior to purchase specific models provided by the manufacturer Specifications are.
3, single-slide type vertical injection molding machine, injection molding machine double skateboard series: the first machine for engineering plastics, commodity have stringent fineness requirements, there is a small fine or insert together with injection molding, insert injection is optimized forming one plan. As the machine has a fixed upper mold, the lower mold slide function. The slide having a double double on the lower die mold, two-mode replacement work, compared to a suitable fine metal pieces embedded or removed. General merchandise molding, fine electronic connectors, phone connectors, integrated circuits and other components.
4, vertical and horizontal injection molding machines, C-type injection molding machine: This machine Vertical clamping, horizontal injection plastic because there is no guide posts, due to clamping portion into a letter "C" word and the name. The aircraft structure clutter and a huge amount of injection, because no column-wide work area, mainly engaged in various types of appropriate safety plug injection molding, such as France head, US plug, UK plug number.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/449.html

machinery: Chinese injection molding machine market position ...

machinery: Chinese injection molding machine market position ...: source: http://injection-molding-machine.tayu.cn/injection_molding_machine/448.html     In recent years, with the increase in demand for do...

Chinese injection molding machine market position for a long time will not be shaken

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/448.html
    In recent years, with the increase in demand for downstream plastic products, injection molding machine of the overall steady growth in domestic demand. According to the press industry, "second Five Year Plan", the next five years, injection molding machine industry will grow by an annual average of more than 12%, and total sales of the industry output value reached 500 billion yuan industry. Given the current domestic market activity is lower than the international market, the domestic situation will encourage more enterprises to go international, can be expected in the next period of time, the injection molding machine industry exports will be hot, this intense domestic competition will be conducted to the international market , then, the international market will usher in the highly competitive and fast growth.
    2012 China top three injection molding machine importing countries were Thailand, Indonesia and Brazil. But since this year, Indonesia, Brazil increase thin, Thailand dropped 36.8%, which means that the injection molding machine overseas markets gradually develop a strong future need to be more cautious and modified plastics injection molding machines overseas investment.
    In the first three quarters of 2013, China's injection molding machine import and export trade deficit amounted to $ 48.76 million, up sharply down 72.2%; imports of injection molding machines occupy the top ten areas 47.7% of modified plastics. Injection molding machine is one of the largest business category national press market deficit. Extruder machinery is one of our country's foreign trade market, second only to the injection molding machine injection molding machine imports. In the first three quarters of 2013, China's total exports extruder station 9262, $ 238 million, accounting for 48.2% of the top ten export destinations.
Plastic processing machinery market is expected to grow at an annual growth rate of 6.9%, to 2017 will occupy machinery sales market two fifths, injection molding machines in 2017 the global market is expected to reach $ 37.1 billion, because of its versatility, a wide range of applications, future for a long period of time, or will continue to remain the most important position.
    So far, China is still the world's largest machinery and equipment market, accounted for 29% of 2012 when the global market, and will continue to lead the global market demand. India will be the world's fastest-growing countries in 2013 accounted for 12% of global market share. According to global, regional market, the central and southern United States the fastest growing market, followed by Africa and the Middle East. 2017, affected by the global transport industry development, injection molding machine manufacturer in Asia and the Pacific can be obtained fast delivery advantage.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/448.html

machinery: British plastics packaging market will further exp...

machinery: British plastics packaging market will further exp...: source: http://injection-molding-machine.tayu.cn/injection_molding_machine/418.html It is understood that the vertical plastic injecti...

British plastics packaging market will further expand

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/418.html

It is understood that the vertical plastic injection molding machine in the country to establish urban infrastructure, play an important role in the establishment of high-speed rail, the plastic packaging market kept increasing. Government focus on technological innovation, with light adjustment and revitalization plan of the plastics processing industry as a key industry to provide support. Therefore, the demand for plastic packaging will continue to rise. Some mature market has begun to accept and popular higher-performance packaging bags, lightweight plastic bags is the development trend of development, with the transport of supplies to reduce light load makes the costs, in line with the interests and demands of producers. Meanwhile, the vertical injection molding machine market, lightweight bag is also environmentally friendly with the convenience brought new consumption developments, is gradually to be respected.

Developments in the packaging industry to transition from simple packaging innovative packaging, with the improvement of the economy with consumption of bags is no longer a simple product. Businesses with consumers on the quality of bag, material, quality and style are in ascension. The use of plastic bags in North America, with Western Europe the rate is already high, change the product mix will continue to support these regions to maintain growth in demand for bags.

Britain vertical injection molding machine plastic packaging manufacturer RPC has been approved to 307 million pounds (386 million euros) acquisition of Iceland with plastic parts manufacturer Promens Group.

Promens Group has 40 factories, 35 of them located in Europe. About 3,800 workers.

RPC issued a statement, saying that the Board believes that the acquisition of the business of Promens is very suitable for RPC, combining the two businesses will create a strong European platform in rigid plastic packaging.

Vertical injection molding machine rigid plastic packaging

RPC added that this acquisition will extend RPC services to multiple end markets, in order to strengthen the compound growth, increasing scale and reduce the cost of creating important opportunities.

RPC position, Promens acquisition will bring its niche technology. With the Group to further increase its demand for polymers will also increase, annual demand is expected to rise to 325,000 tons from the original 445,000 tons, accounting for 4.5% of the European rigid plastic packaging for Applied Polymer total.

RPC chairman PimVervaat said: RPC with Promens is a natural fit. We look forward to greater development platform, deliver greater value to our customers in the future with shareholders.

In addition, RPC has published its half-year results: six months ended 30 September 2014, with sales up 12% to 588.9 million pounds (743.5 million euros). Year-on-year, with sales of 524.7 million pounds (662.5 million euros). Pre-tax profit from the same period the previous year 30.1 million pounds (38 million euros) rose to 34.9 million pounds (44.1 million euros).

With economic development with upgrading people's living standards, demand for commodities is increasing bags, merchandise bags to more demands on the bag use value requirements are also improved. The rapid growth of the current value of the packaging industry, packaging industry reveals significant development prospects.

China is the world's largest fruit and vegetable production with sales of big country, but there are about 30% loss of fruit during storage, transportation and sales experience, which is important for reasons of improper packing, market conditions in the face of intense competition, vertical injection molding machine plastic packaging market The role is becoming increasingly important. Moment, polyethylene film with a polypropylene film is fresh fruits and vegetables the most widely used packaging material.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/418.html

machinery: Vertical injection molding machine optimized desig...

machinery: Vertical injection molding machine optimized desig...: source: http://injection-molding-machine.tayu.cn/injection_molding_machine/415.html     The clamping device is one of the main components o...

Vertical injection molding machine optimized design of the toggle mechanism

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/415.html
    The clamping device is one of the main components of the vertical injection molding machine. Vertical injection molding machine toggle clamping mechanism is many a design variable, sport extremely complex institutions. FIG method used in the past to try to scrape together the design, calculation is extremely voluminous, spend a lot of design time, although the designer tried to select a good program from a number of possible designs, but this design method lacks a quantitative expression of the design goals, design parameters it is impossible to obtain through rigorous and accurate optimization.
    Can only be determined by analogy, the result is still far from satisfying, showing that there is room for improvement design. So, with the optimized design methods toggle mechanism is an inevitable trend, it can satisfy people more complex mechanical design of the proposed, more precise requirements.
    The establishment of a mathematical model
    Design of different types of vertical injection molding machine toggle mechanism, the objective function of different nature. Design of large and medium-sized machines, the objective function and generally minimal axial dimension, because not only can reduce the size of the machine, and in the processing of products, low energy consumption, but also saves time.
    Selection and optimization method Box 2
    Select the optimization method is a very important issue. Without complex method requires derivative, they do one-dimensional search methods, the nature of the objective function and constraint functions no special requirements, is a direct solution method. And the program is simple, fast convergence, good effect, which is only nine-dimensional design issues is very effective.
    3 conclusions
    Vertical injection molding machine in the actual design work, trial and error method used in FIG design, designers spend a lot of time, not exactly. And by optimizing design method, satisfactory results, and the entire block common good. Adopting varus up-down toggle clamping mechanism, can use the program, so that you spend a lot of time to solve a design problem can not be solved.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/415.html

EU injection molding machine materials and products have become increasingly demanding

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/443.html
Zhangmutou, Huangjiang, Chang Ping South China's largest distribution center for plastic supply. The European Commission issued food contact plastic materials with new products and regulations, will perform at the March 25, the main adjustment related to a variety of chemical substances specific migration tightening. Does not meet the requirements for plastic products will be banned to enter the EU market, which will affect the export market share of the enterprise.

The full name of this legislation is the "food contact plastic materials with products Regulation No. 10/2011." Early February this year, the European Commission said the new regulations issued last year, since March 25 formally implemented. This is also the European Commission since 2011 to modify such legislation again.

It is understood that the new regulations added two can be used for the manufacture of food contact materials monomer; dicyandiamide monomer for specific migration limit to be clear, as 60 mg per kg; the original single substance restrictions, changed with new sUBSTANCE xylylene diisocyanate joint limit, the total specific migration of 0.05 mg per kg. Also introduced restrictions on content such as updated. As usual, the future does not comply with the food contact plastic products will be banned to enter the EU market.

However, the EU still leave some leeway on February 26 this year before that compliant products are still allowed with plastic material continues to circulate February 26, 2016, until stocks run out.

According to the analysis, these plastic materials with the EU have become increasingly demanding products, including Dongguan enterprises, including exporters to take the initiative to adapt to make improvement of production technology, otherwise it will lose these markets. Although plastic exporters or face a reshuffle, but in the long run, this can increase the added value of enterprises with strength, favorable enhance their bargaining power.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/443.html

Injection molding machine and hot runner mold What are closely linked

All automatic cycle hot runner mold design and production capacity is mainly used for the production of injection molding machines, select the injection molding machine is also crucial, injection molding machine, to be applied to the hot runner system. In the choice of the injection molding machine has the following relevant factors need to be considered:
    1, hot runner mold for depreciation, to promote the continuous operation of the injection molding machine, multi-stage startup seeking to reduce bad.
    2, the injection volume metering of the injection molding machine, taking into account the large-volume flow path plastic compressibility.
    3, due to increased hot runner mold hot runner, much passageway plates, so a corresponding increase in the thickness of the mold, to pay attention to the mounting height of the choice of the injection molding machine injection molding machine.
Many devices used to ensure automatic operation of the mold, the first choice is simple robot or manipulator controlled, such as:
    1, to reduce the time to mold, reduce cooling water, gas, and hot runner temperature control box circuit connection time, etc.
    2, extrusion plastics or accelerate their ejection.
    3, control the movement of plastic parts and reduce startup time accessories.
    4, before the start of the injection molding machine mold is heated.
    5, the product needs to be placed inserts, labels or sheets until the mold.

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/447.html

Injection molding machine industry and foreign competition, each set strategy and development

    Comprehensive data analysis, we can see that the development of vertical injection molding machine industry has been getting better, whether it is economic production vertical injection molding machine industry or its acquired, or is its scientific and technological innovation, have made gratifying achievements Chinese and foreign companies have increased horsepower in order to achieve better development.

    Production injection molding industry, for example in China, according to incomplete statistics, China now has 546 local plastics machinery manufacturer, vertical injection molding machine annual accounts for 62.97% of the world's annual production of vertical injection molding machine, the next few years the industry It will be 7.43% CAGR growth. In recent years, along with well-known international companies to deepen joint ventures and technical cooperation, as well as international preclude the purchase way mechanical parts of the master, China has become the world's superpower presses pieces of production.....

source:http://injection-molding-machine.tayu.cn/injection_molding_machine/445.html

Countries Pledge Continued Support for Somalia

LONDON — Representatives of more than 50 countries and international organizations pledged continuing support for Somalia's new government during a conference in London on Tuesday.

The conference final communique calls this “a pivotal moment” for Somalia, and pledged continued support for political reform, building security and the justice system, and improving financial management and transparency.  It also calls for continued efforts to improve the Somali economy, take care of displaced people and protect human rights.

The document also indicates continuing concern about using the new Somali government's institutions to funnel aid, and says international organizations still have a key role to play.

The conference co-host, British Prime Minister David Cameron, said the daylong event was useful in keeping international support flowing to Somalia as the government, created late last year, establishes its authority.

"Real progress has been made about backing the president's plans for putting the country of Somalia back together again.  That is, effectively, what is being done here -- very clear plans, very clear support from the international community, building on the progress of the last 12 months," Cameron said.

Somali President Hassan Sheikh Mohamud said he was heartened by the international support, and summarized his message to the world leaders.

"The world has a partner it can trust.  We are working hard to reform our country, despite the great challenges that are in place," Mohamud said.

Somali and African forces have pushed back al-Shabab rebels over the past two years, in a move to improve security, which the communique calls “the essential prerequisite” for progress in all areas.

But a British government statement calls that progress “fragile,” and Prime Minister Cameron said that aside from a desire to help Somalis, the West has another important reason to help ensure Somalia does not again descend into chaos.

"Radicalism is poisoning young Somali minds and breeding terrorism and extremism.  This is a threat to our security, and if we ignore it, we would be making the same mistakes in Somalia that we made in Afghanistan in the 1990s," Cameron said.

The conference praised local efforts to improve the economy in Somalia, partly in an effort to provide work for young men and reduce pirate attacks on ships off the coast.  Piracy is down substantially over the past year.

International efforts to help Somalia will continue in a series of meetings in Brussels, Addis Ababa and Tokyo in the coming months.  And in a move President Mohamud sees as significant, the United Nations is to deploy a team to coordinate all the organization's activities in Somalia.

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The principle of injection molding machine

    Injection molding machine has a complex shape to a shape, size, precision, or with metal inserts dense texture of the plastic products are widely used in national defense, electronics, automotive, transportation, building materials, packaging, agriculture, culture, education health and daily all areas of life. Injection molding of various plastics processing has a good adaptability, high capacity and easy to automate. The rapid development in the plastics industry today, both in quantity and injection molding machine or varieties have played an important role, the production of plastic molding equipment, the total number of 20% - 30%, making it the fastest growing plastic machinery, production volume one of the largest models. According to statistics from 1996 - 1998, 8383 China's exports of injection molding machine (sets), imported injection molding machines 42959 (sets), in which injection molding machine in China in 1998 production reached 20,000 units, its sales accounted for total sales of presses 42.9%. The working principle of injection molding machine and injection with a syringe similar, it is with the screw (or plunger) of thrust, will have a good molten plastics (ie, viscous flow) closed well into the plastic injection mold cavity, The products obtained after curing shaping process. Injection molding is a cyclic process, with each cycle including: dosing - molten plastics - pressure injection - filling the cooling - Kai-mode pickup. Remove the plastic parts and then re-closed mode, the next cycle. Injection molding is a cyclic process, with each cycle including: dosing - molten plastics - pressure injection - filling the cooling - Kai-mode pickup. Remove the plastic parts and then re-closed mode, the next cycle.

    General injection molding machine including injection device, clamping devices, hydraulic systems and electrical control systems and other parts.
    Injection device: its main role is to make plastics plastic evenly into the molten state, and with sufficient pressure and injection speed will melt into the mold. It mainly consists of plastics parts (barrel, screw, or plunger, nozzle, etc.), hopper, screw gear (motor oil, etc.), injection cylinder, move the cylinder block composed of injection.
    Clamping device: it is to ensure that mold is closed and the achievement of a reliable opening and closing action, and take out the product model parts. As the melt at high pressure into the mold cavity in order to produce products without causing locking mold flash or affect product quality, we must put enough of the mold clamping force (ie, clamping force). Clamping device includes a fixed template, mobile template, after the wall, before and after the template used to connect the rod, clamp cylinder, the top of the cylinder, transfer mode devices and other components.
    Hydraulic system and electrical control system: it is to ensure that pre-injection molding machine according to process requirements (such as pressure, speed, temperature, time, etc.) and action program to work effectively and accurately set the power and control systems.
    Generally screw-type injection molding machine process: first by adding granular or powdered plastic cylinder machine, and through the rotation of the screw and barrel wall heating the plastic to become molten state, and mold and injection machine front seat shift, snapping the nozzle mold gate road, then the oil pressure to the injection cylinder Walter, screw forward to the high pressure and faster speed will melt into the closed mold temperature is lower , after a certain period of time and keep the pressure (also known as pressure), cooling, so that curing can mold removal products (packing the cavity to prevent reflux in the melt, add material to the mold cavity, and to ensure that products have a certain density and dimensional tolerances). The basic requirement is injection molded plastics, injection and molding. Plastics molding products to achieve and guarantee the quality of the premise, and to meet the requirements of molding, injection must ensure there is enough pressure and speed. Meanwhile, high pressure injection, corresponding to the cavity produced in a high pressure (the average cavity pressure is generally between 20 ~ 45MPa), so there must be large enough clamping force. Thus, the injection mold device is a device harmony key component injection molding machine.
    Injection molding machine of action program
Mold closed → → → injection nozzle forward → → packing → pre-plastic nozzle loose back → back → cooling → → top of the mold → → needle back door.
    Injection molding machine operation program: injection molding machine operations include control keyboard operation, electrical and hydraulic control system operating system operating in three areas. Separate injection process action, feeding movements, injection pressure, injection speed, the top choice of type, cylinder temperature of each of the monitoring, injection pressure and back pressure regulation, etc.    The evaluation of plastic products are mainly three aspects, first is the appearance of quality, including integrity, color, gloss, etc.; second is the relative position between the size and accuracy; third is the appropriate use of physical properties, chemical properties, electrical properties. These quality requirements and product use occasions, according to the different requirements of different scales. Products, mainly due to defects in the mold design, manufacturing precision and wear and tear and so on. But in fact, plastic processing plants often suffer from technical staff to use technology to make up the face of the mold problem and the effectiveness of defect is not caused by a difficult situation.
Regulation of the production process technology is to improve product quality and yield the necessary means. As the injection molding cycle itself is very short, if the process conditions are handled badly, waste will be endless. In the adjustment process when the best time to change only one condition, to observe several times, if the pressure, temperature, time all the words with the tune, it could easily lead to confusion and misunderstanding, a problem do not know what reason. Adjustment process measures, the means are manifold. For example: to solve the problem there is dissatisfaction with products Note dozen possible solutions, to select the crux of the problem-solving one or two major programs, in order to really solve the problem. In addition, the solution should also pay attention to the dialectical relationship. For example: the emergence of depression products, sometimes to raise the melt temperature, sometimes to reduce the feed temperature; sometimes to increase the quantity, and sometimes to reduce the fluxes. Reverse steps to recognize the feasibility of solving the problem.

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