Injection Mold Components Analysis

- Mar 27, 2018-

           Injection molding injection molding is a processing method used in the mass production of some complex parts. Of course, we use the different parts of the mold to divide the injection mold into the following major parts. The details of the components of the injection mold are introduced. I. Molded parts. Its role is to make the search to obtain the desired shape and size. It is usually composed of a punch or a core (constituting the internal shape of a plastic part), a concave touch or a cavity (constituting the shape of a component), and a spider core or a ring, an insert, and the like. 2, pouring system. It is the channel that directs molten plastic from the injector nozzle into the closed mold cavity. In general, the gating system consists of main runners, branch runners, gates, and cold pockets.3, guide section. To ensure that the moving and stationary molds are closed and accurate, the guide section must be designed. The guide section is generally composed of guide guides and guiding sleeves. In addition to the multi-cavity injection mold, the ejection mechanism should also be designed to guide the basin. In order to avoid the top plate movement occurs when the offset material. Causes the top rod bending and breaking or top plastic parts.

4, ejection mechanism. It is to realize the release of plastic parts. Its structural form is many. The most common ones are the ejector type, the top tube type and the stripper type. 5, core pulling mechanism. When the plastic part has side holes or undercuts, the side movable cores should be extracted from the plastic parts before the mold is ejected. This action process is realized by the core pulling mechanism. 6, cooling and heating parts. In order to meet the requirements of the injection molding process for the touch control group, in order to ensure the cooling of various plastic parts. The mold needs to have a cooling or heating system. When cooling, a cooling water passage is generally provided around the mold cavity and the core. When heating, a heating element is installed inside or around the mold. 7, exhaust system. In order to discharge the air and plastic generated in the process of heating and cooling during the injection, the exhaust gas is often pumped on the parting surface of the chess piece. Because these gases cannot be discharged, they will form defects on the plastic parts.