【正文】 t be based on the requirements of plastics and plastic process performance, a careful analysis of products, processes or the proper design plastic products, to determine the correct method of forming and molding processes, correct choice of molding process conditions, the proper design and selection of a suitable plastic mold molding machine. In the plastic molding process, and all kinds of plastic mold structure and the design calculations, based on a plastic mold is a brief description of the design example.This design is the keyboard blank plastic molding process and mold design. According to the mandate given by the instructor to find a parts book their own kind, their own mapping, application ug software, create a part model diagram, and then create a subtype surface, and to remain in the dynamic simulation model diagram part and the fixed mold section. At the same time, due to the design of keyboard blank in industrial product design is a kind of more practical product design, involving various factors. An overview of the process performance of plastic products on the socket cover injection molding process was analyzed, and select injection molding machine injection molding machine, as well as process parameters, fully discussed with plastic cup with a handle of injection molding to work out features, in line with volume production requirements, at the same time fully meet the application requirements to protect the life of plastic keyboard blank, so the choice of materials, process analysis, the importance of structural design. For this second design is a large number of technical literature in reading, based on the detailed design of the various steps of the process. To facilitate the descriptions, but also inserted a part of Fig. This design is a graduate of the school at the university three years, a prehensive knowledge of the quality and ability of the prehensive examinations.Keywords: Mold technology、plastics、 products、 parameters、 calculation 第一章 引言由于塑料具有很多優(yōu)良的性能和特點，近年來它在各領(lǐng)域得到了越來越廣泛的應(yīng)用。（3）制品結(jié)構(gòu)零件的成型工藝及成型模具設(shè)計：包括制品的工藝分析，工藝計算，成型機(jī)選擇。第三章 模具與注射機(jī)的關(guān)系模具型腔能否充滿與注射機(jī)允許的最大注射量密切相關(guān)，設(shè)計模具時，應(yīng)保證注射模內(nèi)所需