Injection molding is a processing method used in mass production of some complex parts. The specific principle refers to: the plastic raw materials melted by heat are propelled into the cavity of the plastic mold by the screw of the injection molding machine. After cooling and curing, the plastic forming products are obtained.

The mold is mainly composed of pouring system, temperature control system, forming parts and structural parts. Among them, the gating system and forming parts are directly in contact with plastics and change with plastics and products. They are the most complex and changeable parts in plastic mold, requiring the highest finish and precision.

Injection mold is a tool for the production of plastic products; It is also a tool to give plastic products complete structure and precise dimensions. Injection molding is a process used in the mass production of parts with complex shapes. Specifically refers to the melting plastic by injection molding machine high pressure shot into the mold cavity, after cooling and curing, to obtain the forming product.