The mold is one kind of brand-new tool to manufacture the production,with the merits of simple and quick. Specially, with the development of automobile industry, the mold industry is facing a new development opportunity.
This paper mainly introduce the development of mould in our country and foreign countries, the forming technique of tool box injection mould, structure of parts of mould ,and design process of function system .Including process of air ejection system, ejection mould system, structure of slanting pillar ,assemble system ,cooling system.
Because of plastic product special figure, the mould use sub-type tamp-pillar pumping core institution ,which increases the complexity of the structure .The forming of the hole on beside parts use crippling mould and concave mould ,which cleverly solves the problem of side core pulling.
There are detailed computation process and rich illustrations in this paper ,which make the reader understand the design easily