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北华航天工业学院毕业论文

摘 要

模具是工业生产的基础工艺装备，在电子、汽车、电机、电器、仪器、仪表、家电和通讯等产品中，60%－80%的零部件都要依靠模具成形。用模具生产制件所表现出来的高精度、高复杂程度、高一致性、高生产率和低消耗，是其他加工制造方法所不能比拟的。模具生产技术水平的高低，已成为衡量一个国家产品制造水平高低的重要标志，在很大程度上决定着产品的质量、效益和新产品的开发能力。

本次设计的端盖塑料注射模具，在日常生活中应用较普遍，结构比较典型。本次设计采用了斜滑块侧向分型机构，一模两腔布置，采用推杆顶出机构，同时对模具设计的基本过程进行了比较详细的介绍。

关键词： 端盖塑料注射模具 分型面 镶块 模流分析

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北华航天工业学院毕业论文

Abstract

Mold is the basic technology and equipment for industrial production, In the electronics, automotive, electrical, electronics, instruments, meters, home appliances and communication products, 60%-80% of the parts have to forming rely on mold. The production formed with mold has high precision and high complexity, high consistency, high productivity and low consumption, which is other manufacturing methods can not match. The level of die production technology has become an important measurement of a country's level of product manufacturing, to a large extent determines the quality, effectiveness and ability to develop new products.

The injection mold design of cover, which has the general application in our daily lives and it is a typical structure. The design uses the inserts side parting, a two-cavity layout mode, the putters onto the body, while the basic process of die design are compared in detail.

Key words: Cover plastic injection mold design Surface The slanting slide mold-flow

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北华航天工业学院毕业论文

目 录

摘要……………………………………………………………………………………………………………………………Ⅰ Abstract……………………………………………………………………………………………………………………Ⅱ

第1章 绪论 ........................................................................................................................... - 1 - 第2章 产品工艺性分析 ....................................................................................................... - 2 - 2.1 PS性能分析 ................................................................................................................... - 2 - 2.2成型特性及条件 ............................................................................................................ - 2 - 2.3 PS塑料成型工艺参数表 ............................................................................................... - 2 - 2.4 结构工艺性 .................................................................................................................... - 3 - 2.5 零件体积及质量估算 .................................................................................................... - 3 - 第3章 初选注射机型号和规格 ............................................................................................. - 4 - 第4章 模具结构设计 ............................................................................................................. - 5 - 4.1 确定型腔数目及配置 .................................................................................................... - 5 - 4.1.1 确定型腔数目时注意的因素 ................................................................................ - 5 - 4.1.2 型腔数目的确定 .................................................................................................... - 5 - 4.2 分型面确定 .................................................................................................................... - 5 - 4.3 型腔的布置 .................................................................................................................... - 6 - 4.4确定型腔、型芯的结构及固定方式 ............................................................................ - 6 - 4.5确定顶出机构类型 ........................................................................................................ - 7 - 4.6侧向分型机构设计 ........................................................................................................ - 7 - 第5章 浇注系统的设计 ......................................................................................................... - 9 - 5.1浇注系统的设计 ............................................................................................................ - 9 - 5.2主流道设计 .................................................................................................................... - 9 - 5.3主流道尺寸 .................................................................................................................... - 9 - 5.4主流道衬套的形式 ...................................................................................................... - 10 - 5.5 冷料穴及拉料杆的设计 .............................................................................................. - 10 - 5.6 分流道设计 .................................................................................................................. - 11 - 5.7 浇口位置的选择 .......................................................................................................... - 11 - 第6章 模具设计的有关计算 ............................................................................................. - 12 - 6.1 型腔和型芯工作尺寸计算 ........................................................................................... - 12 - 6.2 冷却系统的计算 ........................................................................................................... - 13 - 第7章 MOLDFLOW分析 .......................................................................................................... - 14 - 7.1 填充时间 ...................................................................................................................... - 14 - 7.2 流动前沿温度 .............................................................................................................. - 14 - 7.3 注射位置处压力 .......................................................................................................... - 15 - 7.4 顶出时体积收缩 .......................................................................................................... - 15 - 7.5气穴 .............................................................................................................................. - 16 -