Injection molding dies consist of two main assemblies: the stationary half, which bolts to the machine’s fixed platen, and the moving half, attached to the reciprocating platen. Beyond this fundamental split, advanced mold designs—such as collapsible core systems, gas-assist tooling, precision molds, and multi-cavity hot-runner assemblies—add targeted functions to meet challenging part requirements.

The basic structure of plastic injection mold is composed of two parts: fixed mold and movable mold. The fixed mold part is installed on the fixed plate of the injection molding machine,and the movable mold part is installed on the mobile board of the injection molding machine.