Injection molding is a machining method used for the mass production of complex parts. The specific principle is that the plastic raw materials are screwed into the cavity of the mold through an injection molding machine, and then cooled and solidified to make a plastic product.

Plastic mold consists of two parts: movable mold and fixed mold. The mobile mold is installed on the mobile template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the dynamic and stationary molds are closed to form the gating system and mold cavity. When opening the mold, separate the dynamic mold from the fixed mold to remove the plastic product.

The structure of the mold may vary, depending on the type and performance of the plastic, the shape and structure of the plastic product, and the type of injection molding machine, but the basic structure is the same. The mold is mainly composed of a pouring system, a temperature adjustment system, a molding part and a structural part. Gating systems and formed parts are parts that come into direct contact with plastic and change with plastic and product. It is the most complicated part of the plastic mold, and it is the part with the greatest changes and the highest machining accuracy.

An injection mold is a tool for producing plastic products; it is also a tool that enables plastic products to have a complete structure and precise dimensions. Injection molding is a process for mass producing parts with complex shapes. Specifically, the heat is melted by a plastic injection molding machine and injected into a mold cavity at a high pressure, and the product is formed after cooling and solidification.