塑料瓶盖的注塑模设计

毕业设计说明书题目：塑料瓶盖的注塑模设计专业名称：机械设计及其自动化学生姓名：指导教师姓名：指导教师职称：院系（点）：日期：2012年3月28日毕业设计任务书一、题目：塑料瓶盖的注塑模设计二、专业名称：机械设计及其自动化三、班级：四、学生姓名：五、指导老师：六、设计开始时间：七、设计完成时间：八、院（站）签名：___________________________2012年月日摘要本文主要介绍了塑料瓶盖零件的成型工艺及模具设计。通过对塑件工艺的正确分析，设计了一副一模二腔的塑料模具。详细地叙述了模具成型零件结构的设计包括分析和阐述了塑料盖塑件的壁厚选择及工艺特点；针对塑件的工艺特点进行模具的设计包括模具型腔数目的确定，注塑机的选择，模具分型面、冷却系统、浇注系统、推出机构与浇注系统以及其它结构的设计过程，并对试模与产品缺陷作了介绍。同时详细地说明了模具的设计原则，尺寸公差的设计要求。此外，本文还详细介绍了整个模具的工作原理和工作过程。关键词：塑料盖，塑料模具，成型工艺，模具设计。AbstractShapingcraftandmolddesignoftheplasticpartofthebottlelidafterthistexthasbeenmainlyintroduced.Throughtomouldpiecesofcorrectanalysisofcraft,designonefirstmould2ofplasticmoulds.Narratemouldshapingpartdesignofstructureincludinganalyzingandexplainingplasticsbuildwallthickchooseandcraftcharacteristictomouldpieceindetail;Carryondesignofmouldincludemouldofdeterminationoffiguretocraftcharacteristictomouldpiece,choiceofpersonwhomouldplastics,mouldthepersonwhodivideinto,coolingsystem,poursystem,introduceorganizationandpoursystemandotherdesignprocessofstructure,andhasdonetheintroductionintryingthemouldandproductsdefect.Havingexplainedthedesignprincipleofthemouldindetailatthesametime,thedesigningrequirementofthedimensionaltolerance.Inaddition,thistexthasalsointroducedoperationprincipleofthewholemouldandworkingcourseindetail.Keywords:Theplasticsarecovered,Plasticmould,Shapingcraft,Molddesign.目录1塑料制件的设计................................................................................................31.1塑件材料的性能...........................................................................................................31.1.1塑料材料的使用性能.........................................................................................31.1.2塑件材料的加工特性.........................................................................................31.1.3塑件材料的力学、电气性能.............................................................................31.1.4塑件材料的化学性能.........................................................................................41.1.5塑件材料的成形条件.........................................................................................41.1.6塑件材料的物理性能、热性能.........................................................................51.2塑件的体积与重量.......................................................................................................51.3塑件工艺分析及结构设计...........................................................................................61.3.1塑件成形方法.....................................................................................................61.3.2塑件的结构和尺寸精度及表面质量分析.........................................................61.3.3注塑成形塑件工艺机构设计.............................................................................62总体设计方案的确定........................................................................................82.1分型面的选择...............................................................................................................82.2排气方式的确定...........................................................................................................82.3型腔数目和排列方式的确定.......................................................................................92.4注塑机的选择...............................................................................................................93成型零件设计..................................................................................................103.1成型零件结构设计.....................................................................................................103.1.1凹模的结构设计...............................................................................................103.1.2型芯结构设计...................................................................................................103.2成型零件的工作尺寸计算.........................................................................................103.2.1凹模的径向尺寸计算.......................................................................................103.2.2凸模的有关尺寸计算.......................................................................................123.3型腔壁厚度和底板厚度的计算.................................................................................133.3.1凹模型腔侧壁厚度计算..................................................................................133.3.2凹模型腔底板厚度计算..................................................................................144浇注系统得到设计及计算..............................................................................154.1浇注系统的设计原则................................................................................................154.2流道设计....................................................................................................................154.2.1主流道结构的设计...........................................................................................154.2.2分流道设计.......................................................................................................154.2.3分流道的分布设计...........................................................................................164.3浇口设计..............................................