塑料面板注塑工艺优化及模具设计（本科毕业论文设计）.doc

摘    要

塑料成型是现代塑料工艺中的一种重要加工方法。注塑成型的关键在于注塑模的设计制造和注塑成型工艺的规定。注射模的设计、分析、制造，现在已广泛利用计算机辅助技术来替代技术人员的经验和直觉，并取得了明显的经济效益。注射模CAD/CAE/CAM技术是注塑成型加工技术发展过程中的一个里程碑，注射模CAD/CAE/CAM使设计人员避免设计中的盲目性；使工程技术人员在模具加工前完成试模工作；使生产操作人员能预测工艺参数对制品外观和性能的影响。
本论文介绍了当前塑料模具工业的发展状况及其发展趋势，阐述了注射模具、和CAE技术的应用以及它们的发展趋势。塑料面板是电讯交换机成套设备中的关键部件之一，其注塑成型质量对成套设备的外观影响很大。本论文主要研究的是塑料面板的注射模具设计。运用UG对零件建立三维模型，使用Moldflow软件对零件的成型过程进行数值模拟仿真分析，预测其成型缺陷，通过模拟分析，优化它的成型工艺参数和模具结构。它大大缩短了开发周期，降低了生产成本。并在此基础上设计出生产效率高、结构合理、注塑成型质量好的模具。

关键词：注塑成型，注射模CAD/CAE/CAM，UG，Moldflow，数值模拟

ABSTRACT

Injection molding is an important way in modern plastic processing. Design and manufacture of injection mold and injection molding process requirements is the key to the injection molding. Injection mould for the design, analysis, manufacturing, is now widely used computer-assisted technology to replace the experience and intuitive of technical personnel, and has achieved significant economic benefits. Injection mould CAD/CAE/CAM technology is a milestone of the injection molding processing technology in the development, injection CAD/CAE/CAM can make the designers to avoid blindness in the design; Engineering and technical personnel to completed the test mode before manufacture the mold; Operators can predict the influence of production process parameters to appearance and performance of products.
This paper introduces the development of the plastic mould industry in present, expatiates application of the plastic mould and the technology of CAE(computer aided engineering) and the trend of them. Plastic panel is one of key parts in whole set telecommunication equipment, its quality of injection molding affects the surface quality of the whole set equipment. This paper mostly study the design of the injection mold of the plastic panel. Building the three-dimensional model of the part by using UG(Unigraphics), putting up numerical simulation and emulation analysis to the process of forming the part by using moldflow software, forecast its shortcomings in forming, through the simulation analysis, optimize its process parameters in forming and the structure of mold. It greatly shorten the development cycle and reduce the cost of production. And on this basis to design high efficiency, rational structure, good quality injection molding.

Key words： injection molding, injection mould CAD/CAE/CAM, UG, Moldflow, numerical simulation

目   录

中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1塑料模具的功能及其在塑料加工工业中的地位 1
  1.2国内外塑料模具工业的发展现状 1
1.3我国塑料模具工业技术的主要发展方向 1
1.4本论文研究内容 2
2注射模具及注射模CAE技术 3
2.1注射模具 3
    2.1.1注射成型原理及工艺过程 3
    2.1.2注射模具结构 3
2.2标准流道系统 4
2.3注射模CAE 4
    2.3.1注射模CAE技术的应用 5
    2.3.2注射模CAE技术的发展趋势 6
3工艺分析及优化 8
3.1塑件材料的工艺分析 8
3.2塑件结构分析 8
3.3模拟仿真分析 8
    3.3.1 UG和MOLDFLOW软件介绍 10
    3.3.2造型及优化分析 11
4模具设计 17
4.1注射机的选择与校核 17
    4.1.1注射机的选择 17
    4.1.2注射机的校核 17
4.2浇注系统的设计 20
    4.2.1主流道的设计 21
4.2.2分流道的设计 21
    4.2.3浇口的设计 21
    4.2.4浇注系统的平衡进料 22
4.3成型零部件设计 23
    4.3.1分型面选择 23
4.3.2成型零部件工作尺寸计算 23
    4.3.3模具成型零件强度校核 26
    4.3.4排气结构设计 26
4.4导向及脱模结构设计 27
    4.4.1导向机构设计 27
    4.4.2推出机构设计 27
4.5抽芯机构及冷却系统设计 28
    4.5.1抽芯机构设计 28
    4.5.2冷却系统的设计 29
4.6模具材料的选用 30
5 总结 31
参考文献 32
致谢 33