Plastic mold refers to the mold used for the molding of plastic products in the polymer field. After the determination of plastic material, product design and processing technology, plastic mold design has a decisive influence on product quality and output. First cavity shape, flow channel size, surface roughness, the parting surface, into the water and exhaust location choice, and finalize the design method of demoulding way, all the dimensional accuracy and shape accuracy of products and mechanical properties of plastic, stress, surface quality and internal quality, etc., plays a very important influence. Secondly, in the process of plastic parts processing, the rationality of plastic mold structure has an important influence on the difficulty of operation. Thirdly, the plastic mold also has a considerable impact on the cost of plastic parts. In addition to simple molds, generally speaking, the cost of mold making is very expensive, especially for large plastic molds.

In the production of modern plastic products, reasonable processing technology, efficient equipment and advanced molds are regarded as the "three pillars" of plastic products forming technology. In particular, plastic mold plays an irreplaceable role in realizing the requirements of plastic parts processing technology, plastic parts use requirements and plastic parts appearance modeling requirements. High efficiency and full automation equipment, and only with the installation of automatic production of mold, it can give full play to its due performance. In addition, the production and product renewal of plastic parts are based on the manufacturing and updating of molds.