The hottest Shanghai Pudong hardware parts injecti

2022-08-17
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Shanghai Pudong hardware parts injection molding processing factory

Shanghai Pudong hardware parts injection molding processing factory

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Shanghai Pudong hardware parts injection molding processing factory

Shanghai Xinyun plastic products Co., Ltd. is a private enterprise specializing in the production of plastic products. It is a solution provider of plastic supporting products integrating mold development, injection molding and plastic products. Shanghai Xinyun plastic products Co., Ltd. is located in the beautiful Maogang Town, Songjiang District, Shanghai, in the southwest of Songjiang District, Shanghai, adjacent to G60 (the former A8 Shanghai Hangzhou Expressway) g1501 (the former A30 Tongsan Expressway); Convenient transportation and superior logistics conditions. However, for plastic parts with high precision requirements such as electronic product shells, attention should be paid to their precision requirements from the beginning of mold manufacturing in injection molding manufacturing

the wall thickness of plastic parts processed in Shanghai Pudong hardware parts injection molding factory has a great impact on the quality. If the wall thickness is too small, the flow resistance is large, and large and complex plastic parts are difficult to fill the cavity. When a pair of molds is used beyond its service life, it is necessary to replace new molds, so the production of molds is often repetitive

common holes in the processing of injection molded parts include through holes, blind holes, special-shaped holes (holes with complex shapes) and threaded holes. These holes should be set in places that are not easy to weaken the strength of plastic parts. Sufficient distance should be left between holes and between holes and side walls. The relationship between two holes of thermosetting injection molded parts and thermoplastic injection molded parts and between holes and side walls can be found in relevant industry tables. There are generally the following installation methods for the core used for forming the through hole. One end of the core is fixed. This method is simple, but there will be transverse flash that is not easy to trim, and it is easy to bend when the hole is deep or the hole diameter is small. At the same time, it promotes the loose accumulation of organizational structure to become closer, which is called stress relaxation, The minimum size of the processing wall thickness of plastic parts should meet the following requirements:

have sufficient strength and stiffness

can withstand the impact and vibration of the demoulding mechanism during demoulding

can withstand the tightening force during assembly

the auxiliary components of the injection mold should also be inspected regularly. Many people neglect to maintain the auxiliary components of the injection mold when maintaining the injection mold, which is not desirable. The auxiliary accessories of the injection mold are also closely related to the effect of injection molding, so we should also regularly check the auxiliary system of the injection mold to ensure the normal use of the injection mold. Xinyun plastic injection molding processing factory is a professional injection mold manufacturer, whose products involve injection molds for daily plastic products, medical plastic molds, electronic and electromechanical injection molds and other industries

the minimum wall thickness is specified in the injection molding factory, which varies with the variety, brand and product size of plastic parts, and the flattening of the internal organization with efficient enterprise management will be implemented under different conditions. Excessive wall thickness in the processing of plastic parts not only wastes raw materials, but also increases the molding time for thermosetting plastic molding processing, and is easy to cause incomplete curing. Various moulds are widely used in various material processing industries. Such as sand mold or die-casting mold used for metal casting, forging mold and cold pressing mold used for metal pressure processing

the temperature of the injection mold, the crystallization temperature and speed of different plastic particles are different, and the appearance, deformation, size and plastic mold of the product have different requirements, which makes the temperature control of the injection mold different when different plastics and product requirements are used. Molten plastic injection pressure, plastic in the process of filling the mold cavity is facing great resistance, which makes the injection pressure directly determine the size, weight, density, appearance and so on

Shanghai Pudong hardware parts injection molding factory has increased the cooling time for thermoplastics. In addition, the processing quality of plastic parts will be affected. The wall thickness of the same injection molded part should be as uniform as possible, otherwise additional stress will be generated due to uneven cooling and curing speed

Color Masterbatch coloring method can be divided into granular material and liquid material injection molding processing, which can be mixed into various colors, among which granular material is the most common. The use of color masterbatch can be realized by mixing plastic with color masterbatch, and the mixture or color masterbatch can be actually transported into the injection molding machine. Its advantages are: cheaper color, reduced dust problems, reduced cost of raw materials, and convenient storage. The dry toner coloring method is the cheapest. Its disadvantage is that it sucks dust and is dirty when used. To ensure that the color of the production process is uniform and accurate, bags or cartons of specific size can be used to load the correct amount of dry toner. Reduce the cost Improperly planned cooling system will lengthen the molding time, add cost, and uneven cold cutting will further cause warpage deformation of injection molding finished products.

it is very important to reasonably determine the wall thickness of plastic parts. The wall thickness of plastic parts first depends on the use requirements of plastic parts: including the strength, quality cost, electrical performance, dimensional stability, assembly and other requirements of parts. Generally, the wall thickness has empirical values, which can be determined by referring to similar ones (for example, the general wall thickness of iron is 2mm, and that of vacuum cleaner is generally 2.5mm). The points for attention are as follows:

a. the wall thickness of plastic parts should be as uniform as possible to avoid being too thin, too thick and sudden changes in wall thickness, If the plastic parts are required to have wall thickness changes, gradient or arc transition should be adopted, otherwise the plastic parts will be deformed due to uneven shrinkage, affecting the strength of plastic parts, affecting the fluidity during injection molding and other molding process problems. The design of the cold/hot runner system, the type, position and size of the injection port, and the structure of the product itself. In order to avoid product defects caused by the mold design, we need to analyze the mold design and mold process parameters when making the mold

if the project is approved and the budget is allocated, the product development process will continue at this time. Usually, the manufacturers will carry out further analysis and design after providing additional funds that need to continuously strengthen self-defense awareness. In the second stage, each component in the product will be designed in detail. The design result of the initial product design stage (through the second management suggestion) is a detailed and verified product design. The design of plastic parts includes the consideration of aesthetics, structure, heating, manufacturing and other aspects. The design of manufacturing method will suppress the sintering method, which is to grind the matrix material and phase change material into powder to confirm the effective manufacturing of components. The design of assembly method can be used to reduce components, determine the tolerance of key dimensions and ensure the assembly economy of finished products

b, the wall thickness of plastic parts is generally within 1 5mm. The most commonly used value is 2 3mm. Milling, boring, drilling, reaming, tapping and other processes are always used in multi process mold processing. The use of repeated production molds has a life span

c. Common plastics make the display display: "n0---" and then input the sample number (workpiece number) from small to large into the machine. The recommended minimum wall thickness and common wall thickness of plastic parts: (mm)

d. try not to design the stiffener and screw column too thick. It is generally recommended to take half of the wall thickness of the body, otherwise it is easy to cause appearance problems such as microcosm. You can open the mold to take out the time standard of the parts, often because the parts have been fully cured, Subject to certain strength and rigidity, it will not deform and crack during mold ejection

e. try not to design the parts as a separate flat plate with a small size, otherwise the deformation will cause the parts to be uneven, and the time standard for taking out the parts by opening the mold is often based on the fact that the parts have been fully cured and have a certain strength and rigidity, so as not to deform and crack when the mold is opened and ejected

lubricants are substances added to improve the demoulding property of plastics during heating and molding and improve the surface finish of products. Commonly used lubricants include stearic acid and its salts, paraffin, synthetic wax, etc. Electrical plastic parts is a relatively broad concept, which includes all aspects of our life, such as TV plastic parts, computer plastic parts, air conditioning plastic parts, junction box plastic parts, etc. these products consume a lot of plastic raw materials every year, so what are the common process difficulties of electrical plastic parts

the wall thickness of plastic parts has a great influence on the quality If the wall thickness is too small, the flow resistance is large, and it is difficult for large and complex plastic parts to fill the mold cavity The minimum size of the processing wall thickness of plastic parts should meet the requirements of the following aspects:

1, with sufficient strength and stiffness; In about 1985, the Industrial Research Institute also had a similar research and development. Since 1990, teacher Zhang Rongyu of the Department of chemical engineering of Tsinghua University has also completed the CAE mold software for members to use. At present, it is sold by Kesheng company

2. It can withstand the impact and vibration of the demoulding mechanism during demoulding; Nowadays, mold flow technology has been generally recognized by all countries in the world, and its functions have been strengthened to different stages of molding; and Taiwan has also begun to start. The total number of mold factories in the countryside of Kaohsiung, Tainan, may exceed 5000, and more than 90% still inherit the experience gained from teaching and learning from teachers and apprentices

3. It can bear the tightening force during assembly However, even if we understand this concept, the problem remains unsolved, because at that time, the flow pattern during the internal molding of the mold can not be judged before the mold test; and to predict the flow pattern, we must solve it according to the very complex simultaneous equations of fluid mechanics and heat transfer, which is almost impossible to do by manpower

in fact, plastic and plastic refer to the same thing, there is no difference, but the name is different. Because plastic is a foreign product, it is called plastic in China, while it is generally called plastic in foreign countries. Insiders know that both plastic and plastic refer to plastic. Electrical equipment can be seen in all aspects of our life. A complete set of injection molds for electrical equipment contains thousands of kinds of electrical accessories, but what kinds of general injection molded electrical accessories do they contain. If it is a hot forming material, it is impossible to achieve this effect

the injection molding factory stipulates the minimum wall thickness, which varies with the variety, brand and size of plastic parts Excessive wall thickness in the processing of plastic parts not only wastes raw materials, but also increases the molding time for thermosetting plastic molding processing, and is easy to cause incomplete curing; For thermoplastics, the cooling time is increased In addition, the processing quality of plastic parts will be affected. The wall thickness of the same injection molded part should be as uniform as possible, otherwise additional stress will be generated due to uneven cooling and curing speed

at present, there are many homogenized plastic machines in the market, and in the future, consumers' demand for plastic injection molding products is personalized, which makes the future plastic injection molding machines will have differentiated competition to meet the needs of different consumers for products. As one of the high-precision mechanical equipment, injection molding machinery has a good market prospect, which makes many capital markets enter this field, and supports a number of new injection molding machinery manufacturers. In order to obtain market opportunities, these enterprises must also adopt differentiated competitive strategies. These factors will lead to the emergence of a variety of injection molding machinery in the future market to meet

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