毕业设计（论文）-三通头注射模具设计.docVIP

摘要 本文介绍了注射模具的特点及发展趋势，叙述了三通头注射模具设计与计算的详细过程，介绍了该塑件成型工艺、注射模具的结构特点与工作过程, 阐述了在注射模设计中应注意的事项。注射模分型面滑块侧抽芯脱模机构。PVCtract The characteristics and developments of injection mould were introduced in this paper. The designing and calculating of injection mould for the back of electronic clock were stated in detail. The forming process of the product and the structure characteristics as well as working process of the injection mould were introduced .The points must be paid attention to in the design of the injection mould for the part with lifters were stated.In the process of the designing of the injectinon mould for electronic clock receiver, people should pay attention to several suggestions: the plastic should be designed as reasonable as possible. The selection of the sub-type parts are benificial? to mold the parts of plastic. The design of the? structure of drawing of pattern is not only simple but also the movement should be stable and reliable. The selection of Jin runner should ensure to fill the plastic equally under the prerequisite of not influencing the appearance of the plastic. The design of cooling penstock should make the rate of production reach to the topmost, and ensure any influence to do nothing to the equality of the plastic. Meanwhile, in the process of designing ,we can use analysis soft, such as CAM, to make the design been more reasonable? and efficient. Making full use of? large amounts of standard pieces will reduce the cost of mold plastic facture. The key point of the design of mold plastic have reached the request of the real production.? Keywords njection mould，core pulling，selection o 目录 摘要 1 PVCtract 2 目录 3 第1章 绪论 5 1.1 前言 5 1.2 我国模具行业发展概述 6 1.3 21世纪模具发展趋势 9 1.4 小结 15 第2章 注塑工艺分析及成型方法简介 16 2.1 塑件（三通头）分析 16 2.1.1 塑件 16 2.1.2 塑料名称 16 2..1.3 生产纲领 16 2.1.4 塑件的结构及成型工艺分析 17 2.2 材料PVC的注射成型过程及工艺参数 17 2.2.1 注射成型过程 17 2.2.2 材料PVC的注塑成型参数 18 2.2.3 材料PVC性能 18 第3章 模具设计 20 3.1 拟定模具结构设计 20 3.1.1 分型面位置的确定 20 3.1.2 确定型腔数量及排列方式 21 3.1.3 模具结构形式的确定 21 3.1.4 注射