2011本科毕业设计-机械设计制造及自动化毕业论文

天津工程师范学院2007届本科生毕业论文毕业设计专业：机械设计制造及自动化班级学号：机自–0542学生姓名：纪华指导教师：蔡玉俊副教授二〇〇七年六月天津工程师范学院本科生毕业设计天津工程师范学院2007届本科生毕业论文榨汁机内支架塑料模具设计PlasticmoulddesignofJuice-extractorpart专业班级：机自0542学生姓名：纪华指导教师：蔡玉俊副教授系别：机械工程系2007年6月摘要模具行业是国民经济的一项重要行业。近年来，模具一直朝着高质量、高效率、低成本、短周期的方向发展。传统的模具设计中,模具设计者们是利用二维CAD软件来进行初步设计的。然而，现在，三维模具设计已经被广泛使用，它使设计过程接近天津工程师范学院2007届本科生毕业论文标准化，使初步设计得以迅速实现。在本设计中，将对榨汁机内支架的模具通过Pro/ENGINEER软件进行三维设计，并对设计过程进行讲解。在本设计中，首先对塑件结构、材料特性、用途以及参数进行分析，确定模具采用一模两腔，并使用点浇口填充型腔的总体布局形式。在模具设计过程中，对侧向抽芯机构，分型面的设计，浇注系统、排气系统、冷却系统、脱模机构，进行了详细的介绍。最后通过对注塑机参数校核和生产验证，证明模具结构设计合理性。通过本次模具设计，可以看出，三维模具设计可以缩短设计周期，提高设计质量，大大的增加工作效率。关键字：榨汁机内支架；注塑模具；一模两腔；侧向抽芯机构ABSTRACTThedieandmouldindustryisanimportantindustryofthenationaleconomy.Inrecentyears,mouldisdevelopingtowardshighquality,highefficient,lowcostandshort-period.Intraditionalmoulddesign,moulddesignerswasusing2DCADSoftware&天津工程师范学院2007届本科生毕业论文Toolstoproceedthepreliminarydesign.However,3Dmoulddesignalreadyhasbeenusedextensivelynowadays,whichmakesmoulddesignapproachtostandardizationandmakespreliminarydesignquicklyrealize.Inthisarticle,itpresents3Dmoulddesignforjuice-extractorpartbyPro/E,andexplainsitsdesignprocessindetail.Inthisdesign,atfirst,ithaveanalyzedtheplasticpartstructure,materialproperties,use,andparameters,ascertainedthemouldlayoutformofOnetoTwocavities,andadoptedthegeneraldistributionformofpin-pointgatefillingwithcavity.Inthismoulddesignprocess,ithasintroducedindetailforsideCore-Pullingmechanism,thedesignofpartingsurface,gatingsystemandventingsystem,coolingsystem,ejectionmechanism.Finally,throughcheckingandproductionproofingformoldingmachineparameters,themouldstructureisprovedtobereasonability.Throughthismoulddesign,itmayfindoutthat3Dmoulddesigncanshortendesigncycle,raisedesignqualityandlargelyincreasetheworkingefficiency.Keywords:Juice-extractorpart;Plasticinjectionmould;Onemouldtwocavities;SideCore-Pullingmechanism天津工程师范学院2007届本科生毕业论文58目录第1章绪论...............................................................................................................11.1我国模具发展的现状.....................................................................................11.2主要发展方向................................................................................................1第2章材料与塑件分析.........................................................................................32.1塑料及其工业................................................................................................32.2塑件分析......................................................................................................32.3塑件材料的选择及材料的工艺特性.........................................................42.4塑件体积和质量的计算................................................................................6第3章模具设计.......................................................................................................73.1确定型腔数及其排列方式...........................................................................73.2分型面的设计................................................................................................73.3排气系统的设计............................................................................................83.4成型零件的结构形式及设计........................................................................93.4.1凹模的结构设计.................................................................................93.4.2凸模的结构设计...............................................................................10第4章浇注系统的设计.........................................................................................114.1主流道的设计..............................................................................................114.1.1主流道衬套设计...............................................................................114.1.2定位圈设计.......................................................................................124.2分流道设计..................................................................................................134.3浇口的设计..................................................................................................144.4冷料穴和拉料杆的设计..............................................................................154.4.1拉料杆的设计.................................................................................16第5章标准模架的选定.........................................................................................175.1注射模的标准模架......................................................................................175.2支承零部件的设计......................................................................................175.2.1固定板、支承板.............................................................................175.2.2支承件...............................................................................................185.2.3动定模座板.....................................................................................195.3合模导向机构设计......................................................................................205.3.1导向机构的作用...............................................................................20天津工程师范学院2007届本科生毕业论文585.3.2导柱导向机构......