Composition System of Plastic Mould Structure

Composition System of Plastic Mould Structure

Mold injection molding is a processing method used in mass production of some complex parts. The concrete principle is that the melted plastic raw materials are injected into the cavity of the plastic mould by high pressure from the screw of the injection machine, and then the plastic products are obtained after cooling and curing.

Plastic mould is composed of moving mould and fixed mould. The moving mould is installed on the moving template of injection moulding machine and fixed mould is installed on the fixed template of injection moulding machine. In injection moulding, the gating system and the cavity are formed by the closure of the movable and fixed moulds, and the movable and fixed moulds are separated when the moulds are opened to remove the plastic products. Although the structure of plastic moulds may vary greatly due to the variety and performance of plastic products, the shape and structure of plastic products and the type of injection machine, the basic structure is the same.

The structure of plastic mould is divided into three parts according to its function, which are pouring system, temperature regulating system, forming parts system, exhaust system, guiding system and ejection system. Among them, the casting system and the forming parts are the parts directly contacted with the plastics, and change with the plastics and products. They are the most complex and most variable parts in the plastic mould, requiring the highest processing smoothness and accuracy. In fact, plastic moulds are not difficult, no matter how plastic products change, for the moulds to shape this plastic product, its structure is nothing more than the above aspects.