机械5

大阳摩托车尾灯罩注塑模具的设计 摘要 这次设计首先我们要了解自己的课题——模具。这个课题范围很广，而我的课题锁定在模具其中一个分支，注塑模具。从字面意思就可以看出，注入塑料的模具，所以我们要设计一个容器可以装载塑料并且最后能得到我们想要的形状；然后通过一些途径，比如去图书馆借书，在互联网上查阅有关注塑模具的书籍，，期刊等等，从这些途径中我知道了注塑模，也就是注射模，因为他需要配合注塑机注射材料来完成整个工件的完成，先了解设计模型要的装备和它的材料，再去考虑怎么去做它，做成什么样子，做成理想中的样子还需要什么。在整个模式定下来之后，产品已经有了个大概的雏形，这时候就要考虑怎么为这个雏形添加羽翼，让它看起来漂亮；给它加高要求，让它表现得更加完美。最后我们需要看他能不能用，一件不能用的产品要他干嘛，所以我们在最后还要比对标准的参数，看看设计的东西有什么缺陷。 我的课题是做摩托车车尾灯罩的，像灯罩，车轮子，车门这些东西，他们都是一对一对出现的，这时候我就想为了方便能不能花一次功夫就做好两件产品——一模两腔结构，通过互联网和书籍的力量，我获得了一些相关的知识，它引导了我这一设计的实现方法。 关键词：塑料；模具；摩托车车尾灯罩；一模两腔； Desig
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nd two cavities. 目录 摘要III Abstract IV 1绪论1 1.1注塑模具的定义2 1.2课题的主要内容和工作方法2 2塑料制品分析3 2.1确定车灯罩设计要求3 2.2确定灯罩批量4 2.3材料选择及性能4 2.4拔模角度5 3注塑设备的选择6 3.1注射成型工艺条件6 3.1.1灯罩体积计算6 3.1.2投影区域及需夹紧力6 3.1.3注射机7 3.2成型的特点7 3.3生产原理8 3.4成型过程8 4腔数确定和分型面的选择10 4.1模腔和分形面设计10 4.2分型面的选择11 4.3标准模架的选用11 5成型零部件的设计与计算13 5.1凸模设计13 5.2凹模的设计13 5.3成型零件工作尺寸的计算14 6浇注与冷却系统设计15 6.1浇注系统设计的原则15 6.2主流道设计15 6.3分流道的设计16 6.4进浇口的设计16 6.5冷却系统设计的原则17 6.6冷却水路的计算17 7顶出与导向机构的设计19 7.1脱模机构的设计原则19 7.2脱模机构形式的选择19 7.3主要零件的设计与布置19 7.4导柱的选用20 7.5导套的设计20 8注射机与模具各参数的校核21 8.1工艺参数的校核21 8.2模具安装尺寸的校核21 8.2.1喷嘴的校核21 8.2.2定位圈尺寸的校核21 8.2.3模具外形尺寸的校核22 8.2.4模具厚度的校核23 8.3开模行程的校核23 9三维软件解析24 9.1三维设计软件解析24 结论26 参考文献27 致谢28