基于3D的瓶盖注射模设计

文档编号:JX825  文档字数:11181.页数:35   附任务书，开题报告，文献综述，外文翻译，CAD图，UG三维图

摘   要
 
 注射成型技术能够一次成型形状复杂的制件，具有成型周期短、生产效率高和尺寸精确的优点，注射模是当今模具行业中潜力最大的一种模具，本文为一个洗面奶的塑料瓶盖完成了其注射模的结构设计计算及3D设计。该模具采用一模四腔的型腔布局，总体结构设计为双分型面点浇口注射模，成型零部件采用整体嵌入式结构。模具设计过程中应用模具三维CAD技术，首先用UG软件完成塑料瓶盖产品的三维建模，然后用UG软件完成注射模的三维设计，最后绘制出模具的二维装配图和部分零件图。总体上，模具结构设计合理，计算简要，三维设计直观性强且易于实现模具CAM和数控加工，对该类产品的模具设计及制造有一定的借鉴意义。
 
 关键字：注射模  塑料瓶盖  CAD  UG
The Injection Mold Design of a Plastic Cap Based on 3D

Abstract
 Injection molding can form a plastic part of complex shape with the advantages of short cycle time, high production efficiency and size accuracy. Injection mold industry is one of the greatest potential molds today. This paper is about the mold structural and three-dimensional (3D) design of a cleansing foam cap. This mold is designed as four-cavity, two parting-face and point gate, molding parts using the whole embedded structures. The 3D CAD was used extensively in the mold design. First of all, the UG software was used to model the plastic cap in three-dimensional environment. Then the 3D UG Mold wizards was used to model all the injection mold parts in three-dimensional environment correspondingly. At last the 3D models were transformed to two-dimensional drawing of the general mold assembly drawing and the part drawings of important mold components. Generally, this mold structure design is reasonable and simple, and the three-dimensional design is visual and easy for mold CAM and CNC. The design principle and process is useful for this kind of part in the mold design and manufacturing.

 Keywords: Injection Mold; Plastic Cap; CAD; UG
目  录
摘  要 i
Abstract ii
目  录 iii
第一章  绪论 1
1.1  研究背景 1
1.1.1  塑料简介 1
1.1.2  模具技术的现状及发展状况 1
1.2  模具CAD技术现状 2
1.3  设计课题的主要研究内容 3
第二章  课题设计软件的介绍 4
2.1  UG NX5.0软件介绍 4
2.2  AUTO CAD软件介绍 5
第三章  塑料瓶盖的三维建模 6
3.1  新建文件 6
3.2  制件三维造型 6
第四章  成型工艺分析及模具总体设计 12
4.1  塑料制品概况及基本要求 12
4.2  聚丙烯的概述 12
4.3  制件尺寸结构工艺性分析 14
4.4  模具总体结构形式的确定 14
4.5  注射机型号的初步确定 16
第五章  基于UG NX5.0的三维模具设计 18
5.1  装载产品、设置收缩率、调节模具坐标 18
5.3  对工件求取分型线和分型面后进行分型 20
5.4  标准模架的载入、浇注系统、冷却系统和推出机构的设计 23
第六章 关键尺寸的校核 26
6.1  凹模侧壁厚度的校核 26
6.2  动模支承板厚度校核 26
6.3  注射机安装尺寸校核 27
第七章 结论 29
参考文献 30
致 谢 31

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