奇瑞车A底大风扇叶单型腔注塑模设计

论文字数:20923.页数:47 附CAD图

摘  要
 在当今时代，模具成型已经成为工业生产的重要手段。注塑模是模具生产中采用的最普遍的方法，具有质量好、成本低等一系列优点。本文介绍了汽车空调风扇叶的塑料注塑模具的设计方法及具体设计过程，通过对塑件的结构分析，确定了模具的型芯、侧抽芯机构、脱模机构、复位机构、冷却系统、模架和导向机构等的设计方案。主要通过单分型面注塑，根据产品特性设计凸凹模，选择注塑机型号，确定总体结构设计，着重设计了斜导柱的弯曲力计算，方便产品脱模。通过CAD绘制装配图。冷却系统的核心,模具架模等。抽芯结构是较为困难的文章。我们采用了斜引导支柱侧抽方法分析既是经济、有效,本设计最大的优势就是经济实惠。最后阐述了完成此次设计之后的心得，并对以后的模具设计思路提出了自己的见解和看法。
关键词：模具；斜导柱；注塑模；侧抽芯机构

Abstract
 In today's era, has become a mold forming an important means of industrial production. Die injection mold is used in the production of the most common methods, with good quality and low cost advantages of a series. With the development of the plastic industry, the mould plays a more and more important role in modern industry to mould plastics. This paper mainly introduces the method and the  process of the injecting mold designing, and analyses the influence of mould shaping structure to the quality of moulds. Mainly through a single parting surface design, according to the product characteristics of plastic injection mould, punch, and determine the overall structure, design model, design slanting guiding pillars of bending strength calculation, convenient products. Through the CAD drawing assembly.After the structure analysing of the mould,draw and design the appearance.structure with the UG three dimensional entity designing, then carry on drawing of patterns organization, cooling system of mould, core, mould shelf and design to lead organization,etc.. Core-pulling structure is the emphsis and difficulty of the article. We have used the slanting guide pillar side pulls out method , after the analysis which is both economy and effective, and it can solve this question perfectly .Through reading this article, the reader may be provided very good references when carrying on other injection mold. The design of the biggest advantages is economical and practical. the insight was elaborating in the end of the paper, and the later designing way of the injecting mold was put forward my views and viewpoints.
 
Key words: Mold；Inclined push rod；Injection mold ；Core-pulling structure

目  录
摘要 I
Abstract II

第1章  绪论 1
 1.1  选题的依据和意义 1
 1.2  国内模具业与国外的差异 1
 2.1  设计任务 3
 2.2  塑件分析 3
 2.2.1  塑件外形分析 3
 2.2.2  塑件的几何结构 4
 2.3  塑件的材料性能 5
 2.4  注射机的选用 6
 2.4.1  注射机的选择 6
 2.4.2  注射机型号的确定 6
第3章  塑料注射模设计 8
 3.1  成型部分及其零部件设计 8
 3.1.1  成型部分的要求 8
 3.1.2  分型面的确定 8
 3.1.3  凹凸模的结构设计 9
 3.1.4  凸模、凹模成型工作尺寸计算 10
 3.1.5  型芯和滑块设计 15
 3.1.6  斜导柱设计 19
 3.1.7  压紧楔设计 21
 3.1.8  型腔壁厚计算 22
 3.2  浇注系统设计 24
 3.2.1  浇注系统各部分的作用 24
 3.2.2  浇注系统的设计原则 25
 3.2.3  主流道的设计 25
 3.2.4  分流道的设计 27
 3.2.5  浇口设计 27
 3.2.6  冷料穴设计 28
 3.3  排溢、引气系统设计 30
 3.3.1  排气系统的作用 30
 3.3.2  排气系统的设计要点 30
 3.3.3  排气槽的设计 30
 3．4  顶出机构设计 31
 3.4.1  顶出机构设计原则 31
 3.4.2  顶出机构分类 31
 3.4.3  顶出机构的设计 32
 3．5  温度调节系统的设计 33
 3.5.1 冷却结构设计 34
 3.5.2  冷却装置设计分析 34
 3.5.3  冷却系统参数计算 35
 3.5.4  冷却回路的布置 37
 3.5.5  冷却系统的零件 38
 3.6  模体（模架）设计 38
 3.6.1  模体的概述 38
 3.6.2  固定板及垫板 39
 3.6.3  支承件 39
 3.6.4  导向与定位导向装置 39
结论 41
参考文献 42
致谢 43