牙具盒注塑模具毕业设计

XXXX大学

毕业设计说明书

课题名称： 牙具盒注塑模具设计

学生姓名 学 号 所在学院 专 业 班 级 指导教师

起讫时间： 年 月 日～ 年 月 日

摘 要

根据塑料制品的要求，了解塑件的用途，分析塑件的工艺性、尺寸精度等技术要求，考量塑件制件尺寸。本模具采用一模一腔，点浇口进料，注射机采用海天HTF80XB型号，设置冷却系统，CAD和UG绘制二维总装图和零件图，选择模具合理的加工方法。附上说明书，系统地运用简要的文字，简明的示意图和和计算等分析塑件，从而作出合理的模具设计。

关键词：机械设计；模具设计；CAD绘制二维图；UG绘制3D图。

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Abstract

To understand the use of plastic parts in accordance with the requirements of the plastic products, analysis of the technical requirements of the plastic parts of the process, dimensional accuracy, select the workpiece size of the plastic parts. The mold using a two sub gate feed injection machine adopts Haitian the HTF80XB models, and set a cooling system, CAD and UG drawing two-dimensional assembly diagram and parts diagram, reasonable mold processing methods. Attach a manual, use brief text, a concise diagram and calculated analysis of plastic parts, in order to make a reasonable mold design.

Keywords: mechanical design; mold design; CAD drawing two-dimensional map; UG draw 3D maps, injection machine selection

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目 录

摘 要 ......................................................................................................................... I 第1章 绪论 ............................................................................................................... 4

1.1 塑料简介 ......................................................................................................................... 4 1.2 注塑成型及注塑模 ......................................................................................................... 4 第2章 塑件分析 ....................................................................................................... 7

2.1 塑件图 ............................................................................................................................. 7 2.2 塑件的材料分析 ............................................................................................................. 7

2.2.1 塑料材料的基本特性 ......................................................................................... 7 2.2.2 塑件材料成型性能 ............................................................................................. 8 2.2.3 塑件材料主要用途 ............................................................................................. 8 2.3 塑件的结构和尺寸精度表面质量分析 ......................................................................... 9

2.3.1 塑件的结构设计 ................................................................................................. 9 2.3.2 塑件尺寸及精度 ............................................................................................... 10 2.3.3 塑件表面粗糙度 ............................................................................................... 10 2.4 计算塑件的体积、质量 ............................................................................................... 10 第3章 塑件成型方案设计 ..................................................................................... 11

3.1 分型面选择 .................................................................................................................... 11 3.2 型腔数的确定 ............................................................................................................... 12 3.3 型腔布局 ....................................................................................................................... 12 3.4 浇注系统的类型和位置的选择 ................................................................................... 12

3.4.1浇注系统组成 .................................................................................................... 12 3.4.2 确定浇注系统的原则 ....................................................................................... 13 3.5 成型零件结构设计 ....................................................................................................... 13

3.5.1型腔设计 ............................................................................................................ 14 3.5.2型芯设计 ............................................................................................................ 14 3.6 侧向抽芯机构类型设计 ............................................................................................... 15

3.6.1侧滑块抽芯机构 ................................................................................................ 15 6.侧抽芯机构的抽芯距 ............................................................................................... 16 3.6.2斜滑杆侧抽芯机构设计..................................................................................... 16 3.7 脱模机构的设计 ........................................................................................................... 17

3.7.1 脱模机构的选择 ............................................................................................... 17 3.7.2推管推出机构设计 ............................................................................................ 18 3.8 导向与定位机构设计 ................................................................................................... 19 3.9 排气及引气系统的设计 ............................................................................................... 20 3.10模温调节系统的设计 .................................................................................................. 21

温度调节对塑件质量的影响 ....................................................................................... 21 3.11模架选用 ...................................................................................................................... 22

3.11.1确定模具的基本类型....................................................................................... 22 3.11.2模架的选择 ...................................................................................................... 22

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第4章 模具零件设计 ............................................................................................. 24

4.1 模具成型零件尺寸计算 ............................................................................................... 24 4.2模具强度与刚度校核 .................................................................................................... 27 4.3脱模力的计算 ................................................................................................................ 27 4.4浇注系统的设计 ............................................................................................................ 28

4.4.1 主流道的设计 ................................................................................................... 28 4.4.2分主流道的设计 ................................................................................................ 29 4.4.3浇口的设计 ........................................................................................................ 29 4.4.4拉料杆的设计 .................................................................................................... 30 4.4.5冷料井的设计 .................................................................................................... 30 4.5模具冷却系统的设计 .................................................................................................... 31 第5章 注射机的选用及相关参数的校核 ............................................................. 32

注射成型工艺过程分析 ....................................................................................................... 32 5.1 相关参数 ....................................................................................................................... 34

海天HTF80XB注塑机参数 ........................................................................................ 34 5.2最大注塑量校核 ............................................................................................................ 34 5.3 锁模力校核 ................................................................................................................... 35 5.4 模具与注塑机安装部分相关尺寸校核 ....................................................................... 35 5.5 开模行程校核 ............................................................................................................... 36 第6章 模具结构总图 ............................................................................................. 37 总结 ............................................................................................................................. 38 致谢 ............................................................................................................................. 39 参考文献 ..................................................................................................................... 40

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