编号：
毕业设计说明书
题 目： 洗衣机水位传感器支座产品设计
及注塑模设计
学 院： 机电工程学院
专 业： 机械设计与制造及自动化
学生姓名：
学 号：
姓 名： 叶东
职 称： 副教授
题目类型： ?理论研究 ?实验研究 ?工程设计 ?工程技术研究发 2012年 5 月 15 日
?软件开 摘 要
本说明书在结合了传统的机械设计后，把CAD/CAM技术应用到注塑模具的设计上，在CAD系统中实现了模型和注塑模具的设计。本文还介绍了我国当前模具技术的发展状况以及CAD/CAM在模具上的应用，其中包括AUTOCAD，PRO/E和UG等。首先介绍了塑料及塑料工业的发展现状、发展趋势和塑料成型在工业生产中的重要性，接着粗略地介绍了热塑性塑料的注射成型工艺特点和需要考虑的因素，最后较为概要地介绍了玩具小汽车壳体模具设计的整个过程的思路和要点，包括零件分析、选择注射机和模具相关系统、数据的计算与选择等等，而主要的机械部分设计，其内容包括塑料注塑模具的工作原理及应用，设计准则，塑料注塑模的设计计算，包括模具结构设计，注塑机的选用，浇注系统的设计，动、定模，浇注系统，脱模机构，顶出机构，冷却系统等方面。还有，如何选择、确定要求的参数，以及出现问题时又该怎样解决等。可以说在本说明书中，整个注塑模的设计过程基本上都有介绍。虽然粗略，但可以这样说，对于注塑模具设计来说，它总体上应该是要点较为完整了。总之，模具技术的发展应该为适应模具产品“交货期短”、“精度高”、“质量好”、“价格低”的要求服务。 关键词：注塑模；型芯；型腔；侧抽芯；注射机；浇注系统
Abstract
In this statement, the CAD / CAM technology is used in the design of the injection mold under the combination with the traditional mechanical design, and it implements the design of the model and the injection mold in the CAD system. This paper introduces China's current mold technology’s development and the application of CAD / CAM in die design, including AUTOCAD, PRO / E, UG and so on. First, it introduces plastics, the development and the development trend of plastic industries, and the importance of plastic molding in industrial production; and then it introduces roughly injection molding process characteristics of the
thermoplastics and the factors considered; finally, it talks about the design ideas and elements in the entire process of the small toy Automotive shell’s mold design, including the part analysis, choice of injection molds, the calculation and choice of related systems and data, and so on, and the main mechanical design of the part includes the working principle and Application of plastic injection mold, design guidelines, calculation design of plastic injection mold including structural design, the choice of injection molding machine, pouring system design, dynamic and set mold, pouring system, stripping structure, a top body, cooling system design, and so on. Also, how to select and identify parameters required, and when the problems take place, how to solve them and so on are all included in this paper. It can be said that in this statement, the entire injection mold design process has basically introduced. Although it is rough, we can say that it is complete on the whole to the injection mold design. In short, die technical development should be proper to die products with \ Key word: Injection Mold; core; cavity; sidely pumping core; injection mold machine; pouring system
目 录
摘 要 ........................................................ I ABSTRACT ...................................................... I 引言 .......................................................... 7 1 塑件结构分析和材料选择 ..................................... 8
1.1 结构分析 .................................................. 8 1.2 塑件材料及其选择 .......................................... 9 1.2.1聚甲醛（POM） ........................................... 9 1.2.2双酚A型聚碳酸酯（PC） .................................. 9 1.3 模具材料及其选择 ......................................... 11 2.模流分析 ................................................... 12 2.1.流动分析结果 ............................................. 13 2.1.1填充时间 ............................................... 13 2.1.2流动前沿处的温度 ....................................... 13 2.1.3压力分布 ............................................... 13 2.1.4熔接痕 ................................................. 14 2.1.5气穴 ................................................... 14 2.2模流分析报告 ............................................. 14 2.3模流分析总结： ........................................... 16 3 注射机的选择及其参数校核 .................................. 17
3.1 注射机技术规范 ........................................... 17 3.2 型腔数目确定和校核 ....................................... 19 3.3 最大注射量校核 ........................................... 19 3.4 注塑压力核核 ............................................. 193.5 锁模力校核 ............................................... 203.6 模具闭合高度校核 ......................................... 203.7 开模行程校核 ............................................. 203.8 小结 ..................................................... 214 塑件位置与浇注系统设计 .................................... 214.1 塑料制件在模具中的位置 ................................... 214.1.1型腔数目确定 ........................................... 214.2.2分型面设计 ............................................. 214.2 浇注系统设计 ............................................. 224.2.1主流道设计和主流道衬套结构 ............................. 234.2.2分流道设计 ............................................. 25
洗衣机水位传感器支座产品设计及注塑模设计说明书
