MP3的前后盖的模具设计样稿.doc

摘要：
本设计包含MP3前后盖模具设计。前盖：此产品材料为ABS塑料，有利于提升制品强度，采取一模两腔布局方法，浇口形式为侧浇口。模具结构为斜导杆内抽芯结构。后盖：和前者一样也一样是ABS塑料。采取一模四腔布局，浇口形式为潜伏式浇口。模具结构一样为斜导杆内抽芯结构形式。经过以下计算和设计，此设计是可行，并能够用于实际生产当中。
关键词：注射成型 模具设计 侧向抽芯 推出机构
Rapid tooling analysis of Stereolithography injection mould tooling
Abstract
Increasing competition in global markets is exerting intense pressure on companies to trim their product cycles continuously. As delivery times and costs of tools are on a downward trend, the modern tool manufacturer is under pressure to produce tools quickly, accurately and at a lower cost. Reducing the time to produce prototypes is a key to speed up the development of new products. Rapid tooling (RT) with particular regard to injection mould fabrication using rapid prototyping (RP) technology of Stereolithography (SL) may lead to savings in cost and time. In this paper, SL is used to directly build rapid injection mould tools for short run production. SL tools have been evaluated to analyse the maximum number of successful injections and quality of performance. SL epoxy tools were able to resist the injection pressure and temperature and 500 injections were achieved. The tool failure mechanisms during injection are investigated and tool failure either occurs due to excessive flexural stresses, or because of excessive shear stresses.
Keywords: Rapid prototyping; Stereolithography; Rapid tooling; Injection moulding
目录
第二章 塑件工艺分析 7
工艺性分析 7
前盖塑件成型工艺性分析 7
后盖塑件成型工艺性分析 7
塑件材料特征 8
前盖材料特征 8
后盖材料特征 8
塑件成型工艺参数确实定 8
前盖塑件成型工艺参数确实定 8
后盖塑件成型工艺参数确实定 9
第三章 模具结构方案及模架选择 10
模具基础结构 10
前盖模具基础结构 10
后盖模具基础结构 10
10
前盖确实定 10
后盖确实定 10
分型面选择 11
11
后盖分型面选择 11
浇注系统确实定 12
确定前盖浇注系统 12
14
成型零件结构设计。 14
确定推出方法 15
确定侧向抽芯方法 15
确定模温调整系统 15
确定排气方法 15
模具结构方案 15
第四章