Abstract
This article describes the Dongan car kit cover the specific mold design process, including analysis of plastic parts, injection machine of choice, forming parts of the structural design, structural design drawing of patterns, and the cooling system design. Calculated by the data, access to manuals and other design ideal mold. Calculated by the detailed description and a clear understanding of the practical significance of this design, with emphasis on the design of the mold this part of the overall organization, in order to make the design ideas more clearly. Forming components through a specific design analysis and calculation, so that mold plastic parts design more practical; the same time, other parts of the mold, such as the cooling system, a basic design. The overall design shows through to complete the design of plastic parts.