Definition and classification of 1. punch and die
The punch and the die are the core components of the mold (the mold is the tool used to make the molded product). The punch is a mold with a convex shape, and its function is to force the material to flow to the convex part of the mold in the forming process to achieve the purpose of molding. The concave mold is a mold with a concave shape, and the corresponding concave-shaped product is obtained by flowing the material to the concave part.
From the production process, the punch is generally used for forming parts of the upper mold or simple structure of a molding, the general manufacturing difficulty is low, the production process is simple, while the concave mold is used for forming parts of the lower mold or work progress is more complex multiple molding, the production difficulty is relatively large, the process is complex.

The shape distinction between 2. punch and die
The obvious difference between the punch and the die is their shape. The shape of the punch mold is convex, the same as the shape of the product, and is often used to manufacture parts with convex patterns. The surface can also be set to be smooth or textured to produce different effects; while the shape of the die is concave, which is opposite to the shape of the product and is often used to manufacture parts with concave patterns. Punch and die in the shape and size to ensure that the corresponding parts, especially in the oblique side of the place more stringent requirements, in order to ensure the accuracy and quality of the molding.
The difference between the production process of 3. punch and die.
The manufacturing process of punch and die is also different. The manufacturing process of the punch is relatively simple, and can generally be made by stamping, casting, processing, etc.; while the manufacturing process of the female mold is more complicated, and generally needs to rely on high-precision technology such as EDM to complete. In the production process, the shape of the production process, the selection of materials, CNC machining, finish and other aspects need to pay special attention to ensure the accuracy and quality of the molded products.
Combination Application of 4. Punch and Die
In actual processing, punch and die often need to be combined, so that more complex products can be manufactured. For example, when manufacturing a product with a convex and concave structure, it is necessary to first manufacture two parts of a male mold and a female mold, and then combine them.
5. Summary
In practical applications, male and female dies are usually used together to manufacture products with complex structures. For example, in the injection molding process, a combination of a punch and a female die can be used to manufacture plastic parts of various shapes. The design of the punch is mostly used in scenes such as cutting, pressing, punching, or punching on the surface of the raw material, while the female die is often used to manufacture products that require surface protrusions or occasions where the surface shape is pressed into the raw material.
Punch and die play an important role in modern manufacturing. The correct application of punch and die can improve the efficiency of product manufacturing and improve production efficiency.