注塑模具毕业设计说明书

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AbstractThis design needing the thickness of plastic uniform, the surface should be smooth .Considering the size of product is large, so the design uses one-mode and one-cavity form in this case. The design also use half-structure to forming the handle of product after analyzing the structure of the product. In order to ensuring the surface smooth, the edge without distortion, we use pneumatic ejection structure. This structure also simplifies the mold structure, economical and practical. Meanwhile, we measured the connection between product quality and the cost. Making the mold of simple structure、low processing costs of production、easy processing and usability as much as possible.

Key words Mug; Injection Mould; Half-structure; Pneumatic ejection structure

`I 目 录

摘要、关键词....................................... 错误!未定义书签。 Abstract、Key words ....................................................... I 目录 ...................................................................... III 1.引言 ...................................................................... 1 2.塑料工艺分析与模具方案确定 ............................................. 2 2.1 制件的分析 ............................................................. 2 2.2 模具方案的初步确定 ................................................... 3 2.3总装图 .................................................................. 3 3. 塑料的成型特性及工艺参数 .............................................. 4 4. 注塑设备的选择 ......................................................... 4 4.1 计算塑件的体积和重量 ................................................. 4 4.2 选择设备型号、规格、确定型腔数 ...................................... 4 5. 浇注系统 ................................................................ 5 5.1 确定成型位置 .......................................................... 5 5.2 分型面的选择 .......................................................... 5 5.3 浇口套的选用 .......................................................... 6 5.4 流程比的校核 .......................................................... 7 6. 脱模机构的设计 ......................................................... 8 6.1 顶出机构 ............................................................... 8 6.2 脱模力的计算 .......................................................... 8 7. 侧向抽芯机构的设计 ..................................................... 9 7.1 抽拔距与抽拔力的计算 ................................................ 10 7.1.1抽芯距 .............................................................. 10 7.1.2抽芯力的计算 ........................................................ 10 7.2 抽芯机构的设计 ....................................................... 11 7.2.1滑块与滑块槽的设计 ................................................. 11

`III 7.2.2定位装置的设计 ..................................................... 12 7.2.3斜导柱的设计与计算 ................................................. 12 8. 温度调节机构的选择 .................................................... 13 8.1模具温度调节对塑件质量的影响 ........................................ 13 8.2冷却系统的设计原则 ................................................... 13 8.3冷却装置的布置如下 ................................................... 14 9.塑件的Moldflow分析 .................................................. 15 9.1 有限元法介绍 ......................................................... 15 9.2 有柄盖模型前处理 ..................................................... 15 9.3初始方案分析结果输出 ................................................. 17 9.4制定优化方案 .......................................................... 20 10. 注射机有关工艺参数的校核 ............................................ 22 10.1 注射量的校核 ........................................................ 22 10.2 锁模力与注射压力的校核 ............................................. 22 10.2.1锁模力的校核 ...................................................... 22 10.2.2注射压力的校核 .................................................... 23 10.3 材料厚度与注射机开模行程的校核 .................................... 24 11. 成型零部件的设计与计算机构形式 ..................................... 24 11.1 成型零部件的结构形式 ............................................... 24 11.1.1凹模的结构设计 .................................................... 24 11.1.2型芯的结构设计 .................................................... 24 11.2成型零部件的工作尺寸的计算 ......................................... 25 12. 模架、支承与连接零件的设计与选择 ................................... 28 12.1定模座板(250mm×315mm×25mm) .................................... 29 12.2定模板(250 mm×250mm×25mm) ..................................... 29 12.3动模板(250mm×250mm×50mm) ....................................... 29 12.4 动模座板(250mm×315mm×25mm) .................................... 29 13. 合模导向与定位机构的设计 ............................................ 29 13.1 导柱导向机构 ........................................................ 30