What are the structures of injection molds?

Wed May 24 17:05:30 CST 2023

The injection molding tool consists of two parts, the moving mold and the fixed mold, which are mounted on the moving template of the injection molding machine and the fixed mold on the fixed template of the injection molding machine. During the injection molding process, the moving mold and the fixed mold are closed to form the pouring system and the cavity, and when the mold is opened, the moving mold and the fixed mold are separated to remove the plastic products.

According to the molding characteristics of injection molding mold is distinguished into thermosetting plastic mold, thermoplastic plastic mold two; according to the molding process is distinguished into transfer mold, blow molding mold, casting mold, thermoforming mold, hot press mold (compression mold), injection mold, etc., in which the hot press mold can be divided into overflow, semi-overflow, not overflow type three, injection mold can be divided into cold runner mold, hot runner mold by pouring system; according to the loading and unloading method can be divided into mobile, fixed two.Injection Mold Factory

Injection mold is a tool for producing plastic products; it is also a tool for giving plastic products complete structure and precise size. Injection molding is a processing method used in mass production of certain complex shaped parts. Specifically, the heat-melted plastic is injected into the mold cavity at high pressure by an injection molding machine, and after cooling and curing, the molded product is obtained.

Although the structure of the mold may vary depending on the variety and properties of the plastic, the shape and structure of the plastic product and the type of injection machine, the basic structure is the same. The mold is mainly composed of pouring system, temperature regulating system, molding parts and structural parts. Among them, the pouring system and molding parts are the parts in direct contact with plastic and change with plastic and products, which are the most complicated and changeable parts in the mold and require the highest processing finish and precision.

The pouring system is the part of the flow channel before the plastic enters the cavity from the injection nozzle, including the main flow channel, cold cavity, manifold and gate. Molding parts are the parts that make up the shape of the product, including moving mold, fixed mold and cavity, core, molding rod and exhaust port, etc. Typical mold structure.