Shell injection mold is a tool specially used to produce plastic shell products, such as electrical shell, mobile phone shell, computer accessories, etc. This mold is made of high-precision steel and has a complex internal structure to ensure that plastic can fill all corners of the mold during the molding process, forming the desired detailed shape and size.

Injection mold usually includes two main parts: fixed mold and dynamic mold, which are closed to form the cavity under the action of the injection molding machine. The plasticized plastic material is injected into the cavity through the nozzle of the injection molding machine, and the mold is opened after cooling to obtain the molded plastic shell product. The design of the mold must take into account factors such as the flow of the plastic material, cooling rate and product release, and it must have sufficient strength and rigidity to withstand the high pressure during the injection molding process.

High-quality shell injection molds have a long service life and can produce plastic shells with high precision and good surface quality. The mold design will also focus on the maintenance of the mold and possible maintenance costs, in order to facilitate the long-term stable use of the mold. With the development of technology, the application of computer aided design (CAD) and computer aided engineering (CAE) technology makes the design and manufacture of shell injection molds more efficient and accurate.