编号：毕业设计说明书题目：玩具小车上盖注塑模具设计与工艺分析学院：机电工程学院专业：机械设计制造及其自动化学生姓名：学号：指导教师单位姓名：职称：软件开研术究发技工设工研实验研理类题目型：论究究程计程2014年5月26日摘要本文是针对玩具小车上盖的注塑模具设计与工艺分析。

首先对玩具小车上盖进行三维设计，并且对其进行结构分析。

然后根据玩具车上盖的结构分析其工艺特点，主要包括材料工艺特性、制件的工艺结构特点，然后根据工艺选择注射机，并对注射机的参数进行校核。

接着进行注塑模工艺设计，主要包括分型面设计、型腔数量和布局设计、浇注系统设计、模架选择、推出机构设计和冷却系统设计，其中分型面设计和浇注系统设计是重点设计内容，其设计结果需要进行模流分析验证。

最后对所设计的零件进行装配并给出最终设计结果。

本文设计过程中主要使用UG NX 8.5/ MOLDWIZARD经行设计，用到的设计内容包括三维造型、模具设计、分型面设计、浇注系统设计和冷却系统设计，最终结果由装配完成。

UG关键字：注塑模具；UGAbstractThis article is the injection mold design and process analysis for the cover of toy car, firstdesigns three-dimensional toy car shell, and then analyzes its technological features whichincludes material properties, structural features of parts of the process and select the injectionmachine. Then article design injection molding process which includes sub-surface design,the number and layout of the cavity designing, gating system design, mold selection, launchesmechanism design and cooling system design, checking the process parameters of molddesign.In this article, the design is mainly used UG NX 8.5 / MOLDWIZARD. The content ofthe design includes three-dimensional modeling, mold design, parting surface design, gatingsystem design and cooling system design, the final result is done by UG assembly. Keywords:Injection mold; UG目录引言1..............................................................................................................................................................1 产品的工艺分析2...........................................................................................................................1.1外型设计2..............................................................................................................................................1.2产品材料的确定2............................................................................................................................... .1.2.1ABS常规性能2.................................................................................................................................. .1.2.2ABS的成型工艺3..............................................................................................................................1.3产品的工艺分析3............................................................................................................................... .1.3.1产品的尺寸和表面质量3...............................................................................................................1.3.2壁厚3.....................................................................................................................................................1.3.3脱模斜度设计5..................................................................................................................................1.3.4加强筋设计5.......................................................................................................................................1.3.5圆角设计6........................................................................................................................................... .2 模具结构的设计7...........................................................................................................................2.1确定型腔数目7.....................................................................................................................................2.2型腔布局方式7.....................................................................................................................................3 注射机型号的确定9......................................................................................................................3.1注塑机的结构9.....................................................................................................................................3.2注塑机的类型9.....................................................................................................................................3.3注塑机的选择9.....................................................................................................................................3.3.1所需注射量的计算、塑件质量、体积计算9.........................................................................3.3.2浇注系统凝料体积的初步估算10.............................................................................................. .3.3.3注射机型号的确定10...................................................................................................................... .3.4注塑机的校核11...................................................................................................................................3.4.1注射量的校核11................................................................................................................................3.4.2注射压力校核11................................................................................................................................3.4.3锁模力校核12.....................................................................................................................................3.4.4开模行程和模板安装尺寸校核12.............................................................................................. .4 成型零件设计13.............................................................................................................................. .4.1分型面的设计13...................................................................................................................................4.2成型零部件的结构设计14...............................................................................................................4.2.1型芯和型腔的结构设计14.............................................................................................................4.2.2型芯和型腔尺寸的确定15.............................................................................................................4.2.3型芯和型腔的固定方式15............................................................................................................5 浇注系统的设计16.........................................................................................................................5.1浇注系统的组成16............................................................................................................................. .5.2浇注系统的设计原则16....................................................................................................................5.3主流道的设计17...................................................................................................................................5.4分流道的设计17...................................................................................................................................5.5浇口的设计18.......................................................................................................................................5.6浇口位置的选择19............................................................................................................................. .5.7冷料穴和拉料杆设计19....................................................................................................................5.8浇注系统的设计结果20....................................................................................................................6 排气系统设计21.............................................................................................................................. .7 产品填充分析22.............................................................................................................................. .7.1产品填充分析的意义22....................................................................................................................7.2产品填充分析的结果22....................................................................................................................8 标准模架的选取23.........................................................................................................................8.1标准模架的选择23............................................................................................................................. .8.2模架的尺寸计算25............................................................................................................................. .9 推出机构设计26.............................................................................................................................. .9.1推出机构的设计要求26....................................................................................................................9.2推出机构布局的设计26....................................................................................................................9.3推杆设计26............................................................................................................................................10 冷却系统设计29............................................................................................................................10.1控制模具温度的重要性29.............................................................................................................10.2冷却系统设计的原则29................................................................................................................. .10.3冷却系统的设计29...........................................................................................................................11 其他零件设计32............................................................................................................................11.1镶件固定用螺钉的设计32.............................................................................................................11.2限位钉和支撑柱的设计33.............................................................................................................11.3复位弹簧设计33................................................................................................................................11.4侧定位块设计33................................................................................................................................11.5模具的总装配33................................................................................................................................12 设计总结34...................................................................................................................................... . 谢辞35............................................................................................................................................................ 参考文献36.................................................................................................................................................引言玩具车市场在通过多年的宣传和发展后，随着新技术的不断发展，新的产品不断出现，在男孩子们的众多玩具中，玩具车一直是所有类型玩具中最受欢迎的玩具之一，产生这种情况的原因有以下几点：首先，我国经过了改革开放后经济的飞跃发展，家庭轿车以经遍及全国各地，这使得汽车理念一直伴随着孩子们的成长并不断深入其脑海中，由此直接带动了玩具车模型市场的发展。