Plastic injection mold is the core equipment of the injection molding process, mainly used for processing thermoplastic or thermosetting plastics. The molten plastic melt is injected into the mold cavity at high pressure through an injection molding machine. After the melt is cooled and solidified, the mold is opened to obtain plastic workpieces consistent with the shape of the cavity. Injection molds have the advantages of high molding efficiency, high workpiece precision, complex shape and strong stability in mass production, and are widely used in home appliances, medical devices, automotive, housewares, tablewares, etc.