玩具汽车外壳模具设计与其成型工艺目 录摘 要....................................................6ABSTRACT..................................................71前言...................................................81.1 选题的目的和意义...................................81.2 国外的进展现状....................................81.3 塑料模具的分类与特点..............................81.4 注射模的组成.......................................92 玩具汽车外壳的设计和工艺分析...........................102.1 造型设计..........................................102.2 塑件材料选择......................................102.2.1 ABS 特性.....................................112.2.2 ABS 成型特点.................................112.2.3 ABS 的注射工艺参数...........................112.2.4 ABS 主要用途................................122.3 塑件工艺分析......................................122.3.1 对结构分析...................................122.3.2 对表面质量分析...............................122.3.3 加工的方法...................................133 模具设计...............................................143.1 对分型面的设计....................................143.1.1 分型面的选择原则.............................143.1.2 确定分型面...................................143.2 确定型腔的排列方式和模仁尺寸的大小................153.2.1 模具型腔排列方式的确定.......................153.2.2 模仁尺寸的确定...............................163.3 模架的选取........................................183.4 浇注系统的设计....................................203.4.1 浇注系统的设计原则...........................203.4.2 主流道设计...................................213.4.3 分流道的设计.................................223.4.4 浇口的设计...................................233.4.5 冷料井的设计.................................233.5 侧向抽芯结构的设计................................243.6 顶出机构设计......................................253.6.1 顶出行程的计算...............................263.6....
