The use of a wide range of die, die research and design of various types, scientific classification of die, a planned development of die industry, systematic research and development of die production technology, to promote the modernization of die research and design, manufacturing technology, give full play to the function and role of the die; It is of great significance to study and formulate mold technical standards, improve mold standardization level and professional cooperative production level, improve mold production efficiency and shorten mold manufacturing cycle.
Generally speaking, the mould can be divided into three categories: sheet metal forming mould, such as punching die, etc.; Metal bulk molding die, such as forging (upsetting, extrusion) die, die casting die, etc. Non-metallic material products with molding mold, such as plastic injection mold and compression mold, rubber products, glass products, ceramic products with molding mold, etc.. There are many specific classification methods of die, the common ones are: according to the structure of die, it can be divided into single process die, composite die, progressive die and so on. The compression mould, injection mould and extrusion mould in the plastic forming mould can be divided into electrical mould, automobile mould and television mould according to the object of use of the mould.
According to the mold research and development design materials can be divided into cemented carbide mold and steel mold. According to the nature of the process can be divided into punching die, blanking die, deep drawing die, bending die, plastic molding die in the mold, blow mold. These classification methods have the advantages of intuitionism and convenience, but they are not reasonable. It is easy to mix the type and variety of molds, resulting in a great variety and disorder. Therefore, the comprehensive induction method is adopted to divide the die into ten categories. Each category of die can be divided into several small categories and varieties according to its object of use, material, function and mold manufacturing method, as well as technological properties, etc. It is reasonable.