Mold )( mújù) refers to various molds and tools used in industrial production, and the required products are obtained through injection molding, blow molding, extrusion, die casting or forging, melting and stamping. In short, molds are tools used to make molded products. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article by changing the physical state of the molding material. Known as the "mother of industry".

The mold has a specific contour or cavity shape, and by applying the contour shape with cutting edge, the blank can be separated (punched) according to the contour shape. Applying the shape of the inner cavity can make the blank obtain the corresponding three-dimensional shape. Generally speaking, molds include a moving mold and a fixed mold (or a male mold and a female mold), which can be separated or combined.

Mould classification

According to different materials: metal mold, non-metal mold.

1. Hardware dies are divided into stamping dies (such as blanking dies, bending dies, drawing dies, hole-turning dies, hole-shrinking dies, wavy dies, bulging dies, shaping dies, etc.). ), forging die (such as forging die, upsetting die, etc.). ), extrusion die, extrusion die, die casting die, forging die, etc.

2. Non-metallic molds are divided into plastic molds, inorganic non-metallic molds, sand molds, vacuum molds and paraffin molds. Among them, with the rapid development of polymer plastics, plastic molds are closely related to people's lives. Generally, plastic molds can be divided into injection molds, extrusion molds and gas-assisted molding molds.