摘要 塑料制品具有原料来源丰富,价格低廉,性能优良等特点。它在电脑、手机、汽车、电机、电器、仪器仪表、家电和通讯产品制造中具有不可替代的作用，应用极其广泛。注射成形是成形热塑件的主要方法，因此应用范围很广。 本次的设计是六孔警灯的注塑模具的设计。依据产品的数量和塑料的工艺性能确定塑件采用注射成形法生产，模具的型腔采用单腔平衡布置。本次的设计中不仅参考了大量纸质文献，而且在互联网上查阅资料，设计过程比较完整。 关键词：六孔警灯，注塑模具，单腔 Abstract Plastic products are rich i
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njectio
n mold, si
ngle cavity 目录 第一章塑件建模·························· 1第二章塑件成型工艺分析······················ 2 2. 1塑件的分析·························· 2 2. 1. 1外形尺寸························· 2 2. 1. 2精度等级························· 3 2. 1. 3脱模斜度························· 4 2. 2材料（PC）的性能分析····················· 4 2. 2. 1使用性能························· 4 2. 2. 2成型性能························· 4 2. 2. 3 PC材料详细参数······················ 5 2. 3 PC的主要加工过程参数与注意事项··············· 5 2. 3. 1原料的干燥························ 5 2. 3. 2注射工艺························· 5 2. 3. 3注意事项························· 6第三章拟定模具的结构形式····················· 7 3. 1分型面位置的确定······················· 7 3. 2型腔数量和排列方式的确定··················· 7 3. 2. 1型腔数量的确定······················ 7 3. 2. 2型腔排列形式的确定···················· 7 3. 2. 3模具结构形式的确定···················· 7 3. 3注射机型号的确定······················· 7 3. 3. 1注射量的计算······················· 7 3. 3. 2浇注系统凝料体积的初步估算················ 7 3. 3. 3选择注射机························ 7 3. 4注射机的相关参数的校核···················· 8 3. 4. 1注射压力校核······················· 8 3. 4. 2锁模力校核························ 8第四章浇注系统设计························ 9 4. 1主流道设计·························· 9 4. 1. 1主流道尺寸························ 9 4. 1. 2主流道的凝料体积····················· 9 4. 1. 3主流道的当量半径····················· 9 4. 1. 4主流道的浇口套形式···················· 9 4. 2分流道设计·························· 10 4. 3浇口的设计·························· 10 4. 4校核主流道的剪切速率····················· 11 4. 5冷料穴的设计························· 11第五章成型零件设计计算····················· 12 5. 1成型零件的结构设计······················ 12 5. 1. 1凹模的结构设计······················ 12 5. 1. 2凸模的结构设计······················ 12 5. 2成型零件钢材的选用······················ 12 5. 3成型零件工作尺寸的计算···················· 12 5. 3. 1凹模径向尺寸的计算···················· 12 5. 3. 2凹模深度尺寸的计算···················· 12 5. 3. 3型芯径向尺寸的计算···················· 13 5. 3. 4型芯高度尺寸的计算···················· 13 5. 3. 5侧抽芯中心距的计算···················· 13第六章模架选型························· 14 6. 1模板尺寸确定························· 14 6. 2模架各尺寸的校核······················· 14 第七章排气槽设计························ 15第八章脱模推出机构设计····················· 16 8. 1推出方式··························· 16 8. 2脱模力计算·························· 16 8. 3校核推出机构作用在塑件上的单位压应力············· 16 8. 3. 1推出面积························· 16 8. 3. 2推出应力························· 16第九章冷却系统设计······················· 17 9. 1冷却介质··························· 17 9. 2冷却系统的简单计算······················ 17 9. 2. 1单位时间内注入模具的塑料熔体的总质量W·········· 17 9. 2. 2确定单位质量的塑件在凝固时放出的热量Qs·········· 17 9. 2. 3计算冷却水的体积流量qv·················· 17 9. 2. 4确定冷却水路的直径d··················· 17 9. 2. 5冷却水在管内的流速v··················· 17 9. 2. 6求冷却管壁与水交界面的膜传热系数h············ 17 9. 2. 7计算冷却水通道的导热总面积A··············· 18 9. 2. 8计算模具所需冷却水管的总长度L·············· 18 9. 2. 9冷却水路的根数x····················· 18 9. 3冷却水道的设置························ 18第十章导向与定位结构设计···················· 19第十一章总装图和零件图的绘制·················· 20谢辞···························· 21 参考文献···························· 22