A special tool used by external forces to transform billets into parts of a particular shape and specification.
It is widely used in blanking, die forging, cold heading, extrusion forming, powder unmetallurgic parts suppression, working pressure forging, and the molding production of engineering plastics, rubber, porcelain and other products or injection molding.
The mold has a special wheel or inner wall shape. Using the wheel shape with a knife edge can separate the blank according to the shape of the center line (blanking). By using the shape of the inner wall, the billet can obtain the relative three-dimensional shape.
The mold generally contains two parts: moving die and fixed die (or punch die and concave die), which can be divided into two parts.
The parts are removed during separation, and the blank is introduced into the die for forming when it is closed. Die is a special tool with high precision, complicated shape, bearing the expansion force of blank. It has high regulations on the structural compressive strength, stiffness, surface strength, surface roughness and machining accuracy. The development trend level of die production and manufacturing is one of the key marks of the level of mechanical manufacturing.
In addition to the mold itself, it must also be a die base, die embryo, die kernel to create parts of the injection equipment, such components are generally made of universal.
Mold enterprises must be big and fine, according to the market demand, and technology, assets, machinery and equipment standards, clear market positioning and product positioning, this practice is especially worth learning and imitating in small and medium-sized mold enterprises, concentrate on gradually improving their own technical advantages and brand advantages.
