What is a mold (mújù)
Mold is a variety of molds and tools used in industrial production to manufacture the required products, through injection molding, blow molding, extrusion, die casting, forging, smelting, stamping and other methods to achieve.
In short, under the action of external force, the blank becomes a tool with a specific shape and size of the workpiece. This tool is composed of various parts, and different molds are composed of different parts. It is mainly through the physical state of the molding material to achieve the shape of the processing. Mold has the title of "mother of industry", because they play a vital role in production and are widely used in various molding processes, such as blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, Pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products.
Composition of the mold
The mold usually consists of two parts, a moving mold and a fixed mold (or a punch and a concave mold), which can be divided and combined. Separate to remove the part, and when closed, the blank is injected into the mold cavity to form. The mold is a meticulous tool with a complex shape and needs to bear the expansion force of the blank. Therefore, it has higher requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important symbols of the level of machinery manufacturing. The use of mold is very extensive, in our daily life, such as bathtub, sink, rice cooker, computer, mobile phone, and even many parts of the car, etc., many items are produced by the mold.

In addition to the mold itself, it also needs a mold base, a mold base, a mold core leading to a device for ejection of parts, etc. These parts are generally made into general-purpose types. Our mold enterprises need to be bigger and more refined. We must determine product positioning and market positioning according to market demand, technology, capital, equipment and other conditions, and concentrate our efforts to gradually form our own technical advantages and product advantages. Therefore, our mold enterprises should actively strive to learn from the experience of these advanced foreign enterprises in order to better develop in the future.
The main purpose of the mold
Mold is an industrial tool that processes parts with specific shapes and sizes by changing the physical state of the molding material. There are many types of molds, including injection molds, die-casting molds, stamping molds, precision forging molds, etc. Each mold is suitable for different materials and production processes. Mold plays a vital role in modern industry, not only improving production efficiency and product quality, but also reducing product manufacturing costs.
Production of plastic products: such as the shell and parts of automobiles, home appliances, electronic products, and daily necessities such as kitchen utensils, furniture, shoes, toys, etc;
Production of metal products: including automobile engine parts, transmission parts, and other mechanical and equipment parts;
Production of medical devices: especially meticulous molds, used to produce medical products that require high precision and high quality.
In electronics, automobiles, motors, instruments, electrical appliances, meters, home appliances and communications products, 60%-80% of the parts have to rely on mold molding. The high precision, high complexity, high consistency, high productivity and low consumption of parts produced by molds are unmatched by other manufacturing methods.