摘 要

在工业、农业、国防、日常生活中的方面塑料制品得到了广泛的应用。特 是在电子业中则为突出。电子产品的外客大部分是塑料制品，产品性能的提高要求高素质的塑料模具和塑料性能。成型工艺和制品的设计。

塑料制品的成型方法很多。其主要用于注射，挤压，压制，压铸和气压成型等等。而注塑模，挤压约占成型总数的60%以上。注射成型分为加料、塑化、注射、保压、冷却和脱模。本课题主要是针对喷嘴连接体的模具设计，通过对塑件进行加工。 艺性分析和比较，最终设计出一副注塑模。该课题从产品结构工艺性及具体模具结构出发，对模具的浇注系统、模具成型部分的结构、顶出系统、冷却系统、注塑机的选择及有关参数的校核、都有详细的设计，同时并简单的编制了模具的加工工艺。通过整个模具设计过程表明该模具能够达到此塑件所要求的加工工艺。根据课题设计的主要任务是喷嘴连接体注塑模具的设计。以实现自动化以提高产量。

通过本设计，可以对注塑模具有一个较深的认识，注意到模具设计中的某些细节问题，了解模具结构及工作原理;通过对PROED的学习，可以画出较简单的模具模型，

从而有效的提高工作效率；通过画装配图、零件图，进一步系统深化CAD熟练程度，加深了对模具各个零件的认识。

关键词：塑料模具；注射机；型腔；浇注系统

Abstract

In industry, agriculture, national defense, the aspects of daily life plastic products has been widely used. , Especially in the electronics industry is outstanding. B: electronic products of the outside covering crust is mostly made of plastics, the performance of the product High demand high quality plastic mould and plastic properties. The design of the molding process and products.

A lot of plastic molding method. It is mainly used for injection, extrusion, pressing, die casting and pressure molding And so on. Of the total number of molding and injection molding, extrusion, about more than 60%. Injection molding is divided into charging, plasticizing, injection, Pressure, cooling and demoulding. This topic is mainly aimed at the nozzle connection body mold design, through to the plastic parts manufacturability analysis and comparison, the final design out a pair of injection mold. The subject starting from product molding process and the specific die structure, the mould gating system, molding part of the structure, the ejector system, cooling system, selection of injection molding machine and related parameters of checking, there are detailed design, at the same time and the processing technology of the simple preparation of the mold. Through the whole mold design process shows that the mold plastic parts required processing technology to achieve this. According to the project design is the main task of the nozzle connection of injection mold design. In order to realize the automation to increase production.

Through this design, we can to injection mold has a deeper understanding, attention to some details of mold design, understand the die structure and working principle; Through the study of PROED, can draw a simple mold model,

Effectively improve the work efficiency; Through drawing assembly drawing, part drawing, further deepening system CAD proficiency, To deepen the understanding of mold parts.

Key words：Plastic mould; Injection machine; Cavity; Gating system

目 录

1 前言………………………………………………………………………………………1

1.1 模具工业的地位………………………………………………………………2

1.2 塑料注塑模具的现状及发展趋势…………………………………………………3

2 喷嘴连接体塑件分析………………………………………………………………………………3

2.1 喷嘴连接体的模具设计流程……………………………………………………………………4

2.2 塑件分析…………………………………………………………………………4

2.3 喷嘴连接体的三维图…………………………………………………5

3 喷嘴连接的注塑模具设计………………………………………………………………………………6

. 3.1 方案的选择………………………………………………………6

3.2 制件成型位置及分型面的选择…………………………………………………6

3.3 浇注系统设计…………………………………………………………………………6

3.4脱模机构设计……………………………………………6

3.5 溢料　排气系统的设计……………………………………………………………………..... 8

3.6 模具的主要零件机构设计………………………………………………………………...9

3.6.1 凹模工作尺寸的计算………………………………………………………………............9

3.6.2 凸模工作尺寸的计算……………………….....……………,,………….……….……............9

3.7型腔成型零件尺寸……………………………….....….......………………………....................10

3.7.1内螺纹抽芯…………………………………………………....…….............................13

3.7.2脱模力计算…………………………………………………………............................14

3.8模架选用…………………………………………………………………...................................14

1. 注射机的选择………………………………………………………………………….............................15

4.1注射机基本参数……………………………………………………………….................…......15

4.2初选注射机…………………………………………………………………...............................15

4.3注射机的校核…………………………………………………………………..........................16

4.3.1注射压力的校核………………....………………………………………….....................16

4.3.2锁模力的校核………………………………………………………….............................18

4.3.3注射量的校核…………………………………………………………….........................20

4.3.4注射量的校核…………………………………………………………….........................20

4.3.5模具和模具接触应力强度校核………………………………………..............................21

4.3.6模具安装尺寸校核……………………………………………………………..................21

4.3.7开模行程校核……………………………………………………………..........................22