Since the 1980s, our mould technics has been quickly developing under the industrial policy and the relative national economy's supporting and guiding. Now, the level of development of the plastic injection mould can represent a country's industrial level of development. This paper systematica-lly design the mould based on the automobile interiors toolbox cover strengt-hen part. First, This paper introduces the development of the plastic injection mould, its status and its developing prospects in our country. Then, it introd-uces the concrete design process of the plastic injection mould. The concrete content of design includes: product analysis and the choice of the injection mould scheme, the properties of plastics materials, the choice of the injection machine, the choice of the mould formwork according to analysising the sha-pe of the parts, the calculation of products' dimensions, the design of the running and cooling system, and the design of the exhausting system, the design of the degating system and side direction loose core, the choice of moulding mandril, the using of inclined pusher bar, and also the design of guiding elements. Finally, stating my knowledge gained from the design.
Keywords: Plastic injection mould Side direction loose core
Plastics Degating system