机械5

杯型件塑料成型工艺及模具设计 摘要 本设计题目为杯型注塑模设计，体现了深薄壁类塑料零件的设计要求、内容及方向，有一定的设计意义。通过对该零件模具的设计，进一步加强了设计者注塑模设计的基础知识，为设计更复杂的注塑模具做好了铺垫和吸取了更深刻的经验。 本设计运用塑料成型工艺及模具设计的基础知识，首先分析了塑件的成分及性能要求，为选取浇口的类型做好了准备；然后估算了塑件的体积，便于选取注塑机及确定型腔数量；最后分析了塑件的特征，确定模具的设计参数、设计要点及推出装置的选龋 考虑到制件的结构，以及大批量生产，且外部要求具有一定的美观性。本设计需要用点 浇口的方式成型工艺方案，又因杯型件带有把手，所以型腔需要侧向分型瓣合式结构，推件方式选择推件板加推杆组合式推出，推杆在型芯上。开模时，斜导柱作用于侧型芯向两侧移动，进行侧向分型，侧向分型结束后，由卸料螺钉作用于推件板与型芯中的推杆同时推出塑件。这种机构脱模可靠，设计方便且在模具中占用空间较小，非常适合在本副模具中使用。 关键词：美观塑料杯分型面点浇口瓣合式侧向分型 Desig
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nt gatevalve closed 目录 1绪论1 1.1国内模具的现状和发展趋势1 1.2国外模具的现状和发展趋势2 1.3杯型件件模具设计与制造3 2杯型件工艺性分析4 2.1塑件成型工艺性分析4 2.2 PC性能分析4 2.3 PC注射成型过程及工艺参数5 3模具的结构设计7 3.1分型面位置确定7 3.2确定型腔数量和排列形式7 3.3确定模具结构形式8 3.4确定注射机选择8 3.5浇注系统的设计9 3.6脱模机构的设计11 3.7复位机构的设计12 3.8.侧向分型机构的设计12 3.9排气系统的设计14 3.10成型零件设计15 3.11模具温度调节系统设计16 3.12选择模架17 3.13标准件的选择17 3.14非标准件的设计18 4杯型件模具注塑机校核与调试19 4.1注塑机有关参数的校核19 4.2杯型件模具的装配20 4.3模具装配图23 5结束语25 致谢26 参考文献27