摘要
本次设计是以“修正带背板”塑件为原始文件,进行注塑模具设计。首选针对此塑件,进行结构分析,确定其塑件结构适合采用注塑模具结构生产,然后选择合适的高分子材料与型腔的出模数量。结合模具设计原则与设计规范,选择分型面并且分模完成成型系统零件设计,对浇注系统的设计方面,力求充填均匀,流道废料少、短。冷却系统均匀的分布在塑件的周边,使得温度冷却合理,在脱模顶出机构上,采用均匀分布顶出系统,让塑件能够均匀的受力顶出脱模。在选择标注模架系统方面,采用了国内最大的模具企业生产的龙记GB国标标准模架系统,能够保证制造周期短,制造精度高、效率高的特点。
在完成全套的模具结构设计之后,对其生产所需的注塑机进行了选择与校核,其中校核项目包裹注塑量、注塑压力、锁模力、安装尺寸、顶出行程等内容。
本次设计中,采用了计算机辅助设计软件,其中包括二维设计软件AutoCAD绘制模具的总装图与非标的零件工程图,采用了三维软件进行了塑件的建模与整体装配建模。
本次设计来源于生活实践中,应用非常广泛,采用计算机辅助设计软件大大的提高了设计效率。通过完成了对应设计参数的计算与校核。经过计算校核,本套设计满足实践需求。
关键词:注塑模具;结构设计;注塑机;校核;机械设计
Abstract
This design is based on "Headphone case" plastic parts as the original document for injection mold design. The preferred method is to analyze the structure of the plastic part and determine that the structure of the plastic part is suitable for the production of injection mold structure. Then the appropriate amount of polymer material and cavity is selected. According to the design principles and specifications of the mould, the parting surface is selected and the part design of the forming system is completed by parting. For the design of the gating system, the filling is uniform and the runner waste is less and shorter. The cooling system is evenly distributed around the plastic parts, which makes the temperature cooling reasonable. In the ejection mechanism, the ejection system with uniform distribution is adopted, so that the plastic parts can eject ejection under uniform force. In the selection of marking die base system, Longji GB national standard die base system produced by the largest domestic die and mould enterprises is adopted, which can ensure the characteristics of short manufacturing cycle, high manufacturing accuracy and high efficiency.
After the complete set of die structure design was completed, the injection machine needed for its production was selected and checked, including the checking items of package injection quantity, injection pressure, clamping force, installation size, ejection trip and so on.
In this design, computer aided design software is used, including two-dimensional design software AutoCAD to draw the assembly drawing and non-standard parts engineering drawing of the die, and three-dimensional software is used to model the plastic parts and the whole assembly modeling.
This design comes from life practice and is widely used. The efficiency of design is greatly improved by using computer aided design software. The corresponding design parameters are calculated and checked. After calculation and verification, the design meets the practical needs.
目录
摘要1
Abstract 2
第一章绪论6
1.1注塑模具的简介6
1.2注塑模具发展国内外现状6
1.3国内模具的优劣势7
1.4本课题研究内容8
第二章塑件工艺分析与材料的选择8
2.1塑件工艺分析8
2.2塑件材料的选择9
2.2.1 ABS塑料的特点9
2.2.1 ABS的技术指标9
2.1.3 ABS的注塑成型工艺参数10
2.3 ABS材料的应用10
2.4塑件的体积与质量11
2.5塑件壁厚的分析11
第三章模具结构方案的确定11
3.1出模数量与型腔布局12
3.2分型面的设计12
3.2.1分型面设计的原则12
第四章模具浇注系统的设计14
4.1浇注系统的组成14
4.2浇注系统的设计原则14
4.3流道的设计15
4.3.1主流道的设计15
4.3.2分流道的设计15
4.3.3冷料穴的设计16
4.3.4浇口的设计16
4.4浇注系统标准件的选用17
第五章模具成型系统设计17
5.1型腔结构设计17
5.2型芯结构设计18
5.3型腔成型零件尺寸计算19
5.4型芯成型零件尺寸计算19
5.4成型钢材的选用20
第六章模具温度系统设计21
6.1模具温度调节系统概述21
6.2模具冷却系统设计要求22
6.3冷却水道的形式类型22
6.4模具冷却水道的计算校核23
第七章模具顶出脱模机构24
7.1顶出脱模机构概述24
7.3顶出脱模机构的分类25
第八章标准模架的选用26
8.1模架概述27
8.2标准模架的选用27
8.3模架型号的确定27
第九章注塑机的选择与校核28
9.1注塑机的概述28
9.2初选注塑机型号29
9.3校核注塑机注塑量30
9.4校核压力30
9.5校核模具安装尺寸30
9.6校核移模行程31
9.7校核注塑机锁模力31
总结32
致谢32
参考文献32
第一章绪论
1.1注塑模具的简介
随着科学技术与工业技术的不断进步与更新,注塑模具在机械工业中占用不可动摇的地位,特别现在的电子产品时代的更新,越来越多的塑料产品进入我们的生活中,新的产品出现于更新换代越来越频繁,比如我们常用的汽车仪表类产品、电子通讯类产品,更是达到了前所未有的高度,2010年之后,我国的整体国民经济状态发生了更大的改变,消费能力有了很大的提高,购买能力大幅的提升刺激了消费水平的提高。
塑料产品在汽车仪表、电器电子、医用救援、工程器械等领域
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