Injection molded parts play a decisive role in the design of injection molds. The appearance, comprehensive mechanical properties, precision, surface finish and other aspects of the product are all controlled by the precision of the molded parts. Such as cavity, core, concave template, back plate, etc. are all molded parts. In the design of injection molds, the role of molded parts is very important. To grasp well, the matching and accuracy of molded parts are the key factors that determine the quality of the mold. The design of mold parts mainly includes the following aspects