ABSTRACT Plastics Mold is a technology equipment or tool .It is use of a specific shape ,through a certain approach to form plastic products at today industrial production .It belongs to die cavity areas .the injection mold is one of the type of rapid developments .therefore, the study of injection mold to the understanding of production process and improve the product quality have a great significance. This paper discuss the designing of the injection mold for a electric design main introduced the basic principe of design on the injection mold ,specially proposed the basic principle of have a better performance to forming ,determined the type face ,such as the pouring system and exhaust systems and so on ,calaulate the size of the ponents .There are one holes at product circular wall ,so that ,It must be use side core pulling bodies to achieve . though this design ,I have the deeper understanding of the structure and working principle of the injecting mold .in the meantime ,I master the use of graphics software noting the some of the details .at the process of designing cultivate a work patience. KEY WORDS : Plastic Molds ; Plastic Injection Mould; side pumped core. 目录 摘要 1 ABSTRACT 2 目录 3 1 塑料成型工艺性分析 5 塑件的分析 5 材料的成型工艺性能 5 PE的注射工艺过程及工艺参数 6 PE(聚乙烯)成型的条件 7 2 拟定模具的结构形式和初选注射机 8 分型面的选择 8 注射机的选择与校核 9 注射机的选择 9 注射机的校核 10 型腔数目的确定与排列形式 11 3 浇注系统的设计 14 主流道设计 14 冷料穴的设计 16 分流道设计 16 浇口设计 18 4 排气系统设计 20 5 成型零件结构设计 21 凹模的结构设计 21 凸模的结构设计 21 成型零件工作尺寸计算 22 6 成型零件的制造工艺 29 定模型芯的制造工艺 29 7 模具加工工艺流程 30 8 导向机构的设计 32 9 脱模机构的设计 33 10 模温调节与冷却系统设计 34 模温对塑件