Mould application domain expands unceasingly, and has put forward the application of mould, make more and more requirements and mould industry development faster than other manufacturing development speed has become common law, currently the world market demand mould.
In this paper, the structure of plastic parts for analysis, and then based on the structure of plastic parts mold design. Design elements include: the choice of model injection molding parts and components design, gating system, the top body of the design, the lateral core-pulling mechanism, cooling system, etc. At the same time, the structural design of the convex and concave mold, cavity diameter and depth; type core diameter, a high degree of cavity size and wall thickness to calculate the check. Due to the special structure of plastic parts, in order to facilitate mold release, the design of extraction columns using oblique derivative core agencies, has increased the complexity of the mold structure. Plastic molding on the part of the use of convex holes, subtle molding die combination to solve the problem of the side core pulling.