The mold makes the blank a Tool of a specific shape and size under the action of an external force. Widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, as well as compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or cavity shape, and the application of the contour shape with the cutting edge allows the blank to be separated (punched) in the shape of the contour. Applying the inner cavity shape allows the blank to obtain a corresponding three-dimensional shape. Concerned about surprises Previous: Tell me about the secrets of door and window hardware that can't be ignored. Next: Unremarkable hardware determines the quality of life hardware lock
Hand tools are one of the classifications of the hardware industry. They are relative to power tools. It is mainly used to twist, measure or apply force to the tool by hand. There are many types of hand tools, including measure tapes, cutting types, tool sets, and auxiliary types such as caulking guns. Each type has a different model.
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The mold generally includes two parts, a movable mold and a fixed mold (or a convex mold and a concave mold), which can be divided and combined. When the parts are separated, the parts are taken out, and when the pieces are closed, the blanks are injected into the mold cavity to form. The mold is a precision tool with complex shape and bearing the expansion force of the blank. It has high requirements on structural strength, stiffness, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important signs of mechanical manufacturing level.
Type of mold
There are many types of molds, which can be divided into: 1 processing metal mold according to the processing object and processing technology. 2 Processing non-metal and powder metallurgy molds. Including plastic molds (such as injection molds, compression molds and extrusion molds, etc.), rubber molds and powder metallurgy molds. According to the structural characteristics, the mold can be further divided into a flat punching die and a cavity die having a space. The mold is usually single piece and produced in small batches.
Mold composition
In addition to the mold itself, the mold also requires a mold base, a mold base, a guide, and an ejector device, and these components are generally made into a universal type. Mold enterprises need to be more sophisticated, and must determine product positioning and market positioning according to market demand, technology, capital, equipment and other conditions. These practices are especially worth learning and learning from small mold companies, and concentrate on gradually forming their own technological advantages and products. Advantage. Therefore, China's mold enterprises must actively strive to learn from the experience of these advanced enterprises in order to better develop in the future.
Mold classification
According to the different materials, the mold can be divided into metal molds, plastic molds, and special molds.
Metal molds are further divided into: including stamping dies (such as punching dies, bending dies, deep drawing dies, boring die, shrink hole dies, undulating dies, bulging dies, shaping dies, etc.), forging dies (such as die forging dies, Forging die, etc.), extrusion die, extrusion die, die-casting die, forging die, etc.;
Non-metal molds are also divided into: plastic molds and inorganic non-metal molds. According to the different materials of the mold itself, the mold can be divided into: sand mold, metal mold, vacuum mold, paraffin mold and so on. Among them, with the rapid development of polymer plastics, plastic molds are closely related to people's lives. Plastic molds can generally be divided into: injection molding molds, extrusion molding molds, gas-assisted molding molds and the like. 
