塑料模具是一种生产塑料制品的工具.它由几组零件部分构成，这个组合内有成型模腔。注塑时，模具装夹在注塑机上，熔融塑料被注入成型模腔内，并在腔内冷却定型，然后上下模分开，经由顶出系统将制品从模腔顶出离开模具，最后模具再闭合进行下一次注塑，整个注塑过程是循环进行的。
Plastic mould is a tool for producing plastic products. It consists of several sets of parts. The combination has a forming cavity. During injection, the mould is clamped on the injection machine. The molten plastic is injected into the cavity of the injection mould, cooled and finalized in the cavity. Then the upper and lower moulds are separated. The product is ejected from the mould through the ejection system. Finally, the mould is closed for the next injection. The whole injection process is cyclic.
一般塑料模具由动模和定模两部分组成，动模安装在注射成型机的移动模板上，定模安装在注射成型机的固定模板上。在注射成型时动模与定模闭合构成浇注系统和型腔，开模时动模和定模分离以便取出塑料制品。
Generally, plastic moulds are composed of moving and fixed moulds. The moving moulds are installed on the moving moulds of the injection moulding machine and the fixed moulds are installed on the fixed moulds of the injection moulding machine. In injection moulding, the gating system and the cavity are formed by the closure of the movable and fixed moulds, and the movable and fixed moulds are separated when the moulds are opened to remove the plastic products.
模具的结构虽然由于塑料品种和性能、塑料制品的形状和结构以及注射机的类型等不同而可能千变万化，但是基本结构是一致的。模具主要由浇注系统、调温系统、成型零件和结构零件组成。其中浇注系统和成型零件是与塑料直接接触部分，并随塑料和制品而变化，是塑模中最复杂，变化最大，要求加工光洁度和精度最高的部分。
Although the structure of the mould may vary greatly due to the variety and performance of plastics, the shape and structure of plastics products and the type of injection machine, the basic structure is the same. The die is mainly composed of pouring system, temperature regulating system, forming parts and structural parts. Among them, the casting system and the forming parts are the parts directly contacted with the plastics, and change with the plastics and products. They are the most complex and most changeable parts in the plastic mould, requiring the highest processing smoothness and accuracy.
浇注系统是指塑料从射嘴进入型腔前的流道部分，包括主流道、冷料穴、分流道和浇口等。成型零件是指构成制品形状的各种零件，包括动模、定模和型腔、型芯、成型杆以及排气口等。
The pouring system refers to the runner part of the plastic before it enters the cavity from the nozzle, including the main runner, the cold material hole, the shunt runner and the gate, etc. Molding parts refer to all kinds of parts that constitute the shape of products, including moving die, die setting and cavity, core, forming rod and exhaust outlet, etc.
我国塑料模具在高技术驱动和支柱产业应用需求的推动下，形成了一个巨大的产业链条，从上游的原辅材料工业和加工、检测设备到下游的机械、汽车、摩托车、家电、电子通信、建筑建材等几大应用产业，塑料模具发展一片生机。
Driven by the application demand of high-tech and pillar industries, China's plastic moulds have formed a huge industrial chain, from upstream raw and auxiliary materials industry and processing, testing equipment to downstream machinery, automobiles, motorcycles, household appliances, electronic communications, building materials and other major application industries. Plastic moulds have developed a piece. Vitality.
随着中国汽车、家电、电子通讯、各种建材迅速发展。
With the rapid development of automobiles, household appliances, electronic communications and various building materials in China.