How the plastic injection mold industry responds to the fierce competition in the injection molding market
Apr 11, 2022
The continuous improvement and development of plastic molding processes will lead to the development of gas-assisted molds and molds for high-pressure injection molding processes. The accuracy of plastic parts is divided into dimensional accuracy, geometric accuracy and appearance accuracy (transliteration, tone, etc.). To ensure precision requirements, moldmakers will continue to research and develop high-pressure injection and injection-compression molding processes. The factor that affects the accuracy of injection-molded parts is molding shrinkage. High-pressure injection molding can reduce the shrinkage of resin and improve the dimensional stability of plastic parts. Gas-assisted injection molding technology is relatively mature, which can improve the internal and external quality of plastic parts, low injection pressure, small product deformation, easy to mold products with large thickness, save raw materials, and improve work efficiency. This significantly reduces costs.
Plastic injection molds are increasingly being met to meet the urgent needs of users to manufacture short lead times, high precision and cheap molds. This is because parts made from molds are becoming larger and larger, on the other hand, they are developed into multiple cavities due to higher productivity requirements.
Plastic injection moulds will be developed as multifunctional composite moulds. The new multifunctional composite mold is based on a multi-station progressive die, which is responsible for assembly operations such as lamination, tapping, riveting and locking in addition to stamping and molding parts. Functional molds are no longer individual components, but bulk components such as contactor and bearing components, core components of various micromachines, electrical components, and equipment. The plastic injection mold industry is constantly updating its product upgrading technology to adapt to the current competitive market.
Plastic injection molds are the core of the manufacturing industry, the mold cavity tools are of a certain size and shape, and it can be used with various systems and auxiliary mechanisms to fill a wide range of mold cavity liquids. Kun dimension The characteristics and quality of a specific shaped industrial part.
Surface segmentation: Opens plastic injection molds and removes the surface of the plastic part casting system. The general principles for selecting a demolding surface are to ensure the quality of the plastic part, facilitate demolding and simplify the mold structure.
Exhaust system: The plastic melt is injected into the cavity, and the air in the cavity must be evacuated at the same time. The function of the exhaust system when injecting molten plastic to exclude a wide range of gases generated during the heating of the plastic is to exclude air in the cavity, and the third is to inject gas during the molding process. For some small spaces or precision parts, more attention should be paid to the discharge to avoid product surface burns. Kun Fungal contamination is reduced due to insufficient injection volume and excessive welding defects. In the plastic injection molding process of brake plastic, in addition to the original gas in the cavity, the volatilized gas should be removed immediately when the plastic enters when the plastic is heated. So, what about the venting of this hole?
Typically, when molten plastic is injected at large allowable injection rates, the product is free of scratches and the cavity is considered to have adequate venting.
