塑料水杯注塑模具设计

水杯模具设计

专 业：机械设计制造及其自动化 学 生：陈洪振 指 导 教 师：高征兵 完 成 日 期：2012年5月22日

扬州大学广陵学院

摘 要

近年来，我国的模具发展迅速，尤其是塑料模具提出了越来越高的要求，最近几年，塑料模具在整个模具行业所占的比例上升到30%左右，相信在未来的时间里，中国塑料模具工业还将保持年均增长速度达到10%以上较高速度的发展，国内塑料模具市场以注塑模具需求量最大。将来注射模具发展的方向向更精密、更高效、复合和多功能、更大型、更精密、更复杂、更绿色及更经济的方向发展，模具产品的技术含量将不断提高，模具制造周期将不断缩短。

注射成型是塑料成型的一种重要的方法，它主要适用于热塑料的成型，可以一次成型简单或复杂的精密塑件。本课题是将水杯作为设计模型，将注塑模具的相关知识作为依据，阐述塑料注射模具的设计过程。介绍塑件结构形状，塑件的材料选择，及塑件的结构工艺性，注射机成型的设备组成分类及型号规格。

本文详细介绍了水杯注塑模具的设计，从产品的结构工艺性分析，具体模具结构出发，选择模具型腔的分型面，型腔的数量，以及对模具的浇注系统的设计，模具成型零件的分析计算，合模导向机构的设计，推出机构，使用EMX（模架设计专家）进行模架的设计，最后对三维造型使用Pro/Engineer形同转出dwg文件进行出图。

关键词：注塑模具；注射机；Pro/Engineer；EMX（模架设计专家）

I

Abstract

. In recent years, China's rapid development of the mold, especially the plastic mold of the increasingly high demand, in recent years, the plastic mold in the mold industry the proportion of up to 30% jobs, I believe in the coming years, China plastic mold industry will maintain an average annual growth rate of more than 10% high speed development, the domestic market to plastic mold injection mold greatest demand. The future development direction of injection mold to more sophisticated, more efficient, complex and multi-purpose, larger, more sophisticated, more complex, more green and more economic development, mold the technical content of the product will continue to improve, the manufacturing cycle of the die will shorten ceaselessly.

Plastic molding injection molding is an important method, which is mainly applied to the thermal plastic molding, molding can be a simple or complex precision plastic parts. This topic is the cup as a design model, the injection mold related knowledge as the basis, elaborates the design process of plastic injection mold. Introduction to the structure of plastic parts plastic parts shape, material selection, and the structure process of plastic products, injection molding machine equipment composition classification and specifications.

This paper introduces in detail the cup injection mold design, from product structure manufacturability analysis, the specific structure of the mold, mold cavity parting surface, cavity number, as well as to mold's gating system design, analysis and calculation of molding parts, mold guide mechanism design, the introduction of institutions, the use of EMX (mold design expert ) for mold design, finally the3D modeling using Pro / Engineer DWG file is transferred out of a map.

Key words: Injection molding; injection machine; Pro/Engineer; EMX (formwork design expert)

II

目 录

摘要 Abstract 第一章 绪论

1.1模具及模具工业的发展与现状?????????????????????1 1.2塑料成型模具及分类?????????????????????????1 1.3注射模具的发展趋势?????????????????????????1

第二章 塑料成型工艺

2.1塑料制品的结构和工艺性能设计????????????????????2 2.1.1塑件结构形状???????????????????????????2 2.1.2塑件材料选择???????????????????????????2 2.1.3塑料制件的结构工艺性???????????????????????2 2.2塑料注塑成型????????????????????????????3 2.2.1注塑成型工艺过程?????????????????????????4 2.2.2塑料成型工艺参数?????????????????????????5 2.2.3注塑成型特点???????????????????????????8 2.3注塑成型设备????????????????????????????8 2.3.1注塑机机构组成??????????????????????????8 2.3.2注塑机的工作过程?????????????????????????9 2.3.3注塑机的分类???????????????????????????10 2.3.4注塑机的基本参数?????????????????????????11 2.3.5注塑机的型号规格?????????????????????????13

第三章 水杯注射模设计

3.1注射模具分类及典型结构???????????????????????14 3.1.1注射模分类????????????????????????????14 3.1.2注射模典型结构??????????????????????????14

III

3.2水杯模具的结构设计?????????????????????????16 3.2.1分型面位置的确定?????????????????????????16 3.2.2型腔数量的确定??????????????????????????17 3.2.3浇注系统设计???????????????????????????17 3.2.4成型零件设计???????????????????????????19 3.2.5合模导向机构设计?????????????????????????21 3.2.6推出机构设计???????????????????????????22 3.2.7模具温度调节系统设计???????????????????????23 3.2.8标准模架的选用??????????????????????????24 3.3注射模具与注射机的关系???????????????????????24 3.3.1选择注塑机????????????????????????????25 3.3.2最大注射量的校核?????????????????????????26 3.3.3注射压力的校核??????????????????????????26 3.3.4锁模力的校核???????????????????????????27 3.3.5模具高度与注射机闭合后高度关系的校核???????????????27 3.3.6开模行程的校核??????????????????????????27 3.3.7推出装置的校核??????????????????????????27 3.3.8喷嘴的校核????????????????????????????28

第四章 水杯模具三维设计

4.1 Pro/Engineer功能描述计??????????????????????29 4.2水杯三维造型及其模具设计??????????????????????29 4.2.1水杯三维?????????????????????????????29 4.2.2水杯模具设计???????????????????????????29 4.3模架设计??????????????????????????????31 4.3.1定义模具模架???????????????????????????31 4.3.2设计浇注系统???????????????????????????32 4.3.3设计脱模机构???????????????????????????33 4.3.4设计限位机构???????????????????????????34

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