What is the structure of a plastic mold?

Mold injection molding is a processing method for mass production of some messy shape parts. The specific principle is to push the heated molten plastic feedstock into the cavity of the plastic mold with the screw of the needle molding machine under high pressure, and then cooled to obtain a plastic molded article.
Plastic molds consist of active molds and fixing molds. The movable mold is mounted on the movable template of the injection molding machine, and the fixed mold is mounted on the fixed template of the injection molding machine. During the injection molding, the movable mold and the fixed mold are closed to form a casting system and a cavity. When opening the mold, separate the moving mold and the fixed mold to remove the plastic product.

Although the structure of the plastic mold may vary greatly depending on the type and function of plastics, the shape and structure of the plastic product, and the type of injection molding machine, but the fundamental structure is the same. The structure of the plastic mold is distinguished according to the functionality it is mainly composed of a cast system, a temperature control system, a molding part system, an exhaust system, a guide system, an top-out system, and the like. Among them, the casting system and molded parts are part of direct contact and varying plastic. With plastics and products. They are the most messy parts in plastic molds, which are very high, and it requires high processing finish and precision. Gate system: means that the flow path is part of the plastic from the nozzle into the cavity, including dry flow, cold block, flow path, and gate.


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