螺纹盖的注塑模具设计2

本科毕业论文（设计）题目螺纹盖的注塑模具设计学生姓名专业名称材料成型及控制工程指导教师2012年5月20日教学单位学生学号200894034019编号I螺纹盖的注塑模设计123指导老师：123（宝鸡文理学院机电工程系材料成型及控制工程专业陕西宝鸡721016）摘要：注塑模具是塑料工业中增长最快的工业门类之一，因此，研究注塑模具对了解塑料产品的生产过程和提高产品质量有很大意义。本文介绍了注射成型的基本原理，特别是单分型面注射模具的结构与工作原理。注射成型是热塑性塑料成型的主要方法之一，本设计进行了螺纹盖的注射模设计，对模具结构与注射机的匹配进行了校核；对零件结构进行了工艺分析；确定分型面、浇注系统等；选择了注射机；简单计算了成型零部件的尺寸；并介绍了装配图中各部分的名称，简要说明了此模具的工作过程。如此设计出的结构可确保模具工作运用可靠，通过本设计，可对注射模具有一个初步的认识，注意到设计中的某些细节问题，了解模具结构及工作原理。关键词：注射模具；型腔；分型面；浇注系统；注射机。IITheinjectionmolddesignofscrewcap123Supervisor:123(DepartmentofElectricalandMechanicalEngineering,BaojiUniversityofArtsandSciences,ShaanxiBaoji,721016)Abstract:Plasticinjectionmoldindustryisthefastestgrowingoneintheindustry.Therefore,theresearchoftheinjectionmoldhasanimportantsignificanceforunderstandingtheproductionprocessofplasticproducts.Thispaperintroducedthebasicprinciplesofinjectionmolding,especiallythestructureandworkingprincipleofasinglepartingsurface.Injectionmoldingisoneofthethermoplasticplasticmoldingmethods,thisdesignisabouttheinjectionmoldofthescrewcap,andcheckedonthemoldstructureandthematchingoftheinjectionmachine;takenaprocessanalysisofthecomponents;determinedthepartingsurface、gatingsystemetc;.selectedtheinjectionmoldingmachine,calculateofthesizeofthemoldingpartssimply,andintroducedthenameofeachpartoftheassemblydrawing,describedtheworkprocessofthemoldbriefly.Thestructureofsuchadesignensuresthemoldusereliable.Throughthedesign,wecanhaveapreliminaryunderstandingoftheinjectionmold,takesnoteaboutsomeofthedetailsofthedesign,andwecanunderstandthemoldstructureandworkingprinciple.KeyWords:PlasticInjectionMould;Cavity;PartingSurface;Gatingsystem;InjectionMoldingMachine.I1.前言............................................................................................................................11.1模具技术在国民经济中的地位......................................................................11.2模具技术的发展现状......................................................................................11.2.1CAD/CAM/CAE技术的一体化.........................................................11.2.2汽车模具结构的技术需求....................................................................21.2.3热流道等技术在注射模中的应用........................................................31.2.4模具热处理与表面强化技术................................................................31.3中国模具发展趋势..........................................................................................31.4塑料模具的发展.............................................................................................42.设计任务....................................................................................................................63.塑件成型工艺分析....................................................................................................73.1塑料成型特性..................................................................................................73.2塑件的结构工艺性..........................................................................................83.3关于注射机......................................................................................................84分型面的选择及浇注系统的设计.........................................................................114.1分型面的选择...............................................................................................114.2浇注系统的设计............................................................................................114.2.1主流道的设计......................................................................................114.2.2分流道的设计......................................................................................124.2.3浇口的设计..........................................................................................135模具设计的方案论证.............................................................................................145.1型腔的布局...................................................................................................145.2成型零件的结构...........................................................................................145.3推出机构的确定...........................................................................................145.4合模导向机构的设计...................................................................................146主要零部件的设计计算..........................................................................................156.1成型零件的成型尺寸计算............................................................................156.2模具型腔壁厚的确定....................................................................................166.3模具型腔模板总体尺寸的确定....................................................................176.4标准模架的确定............................................................................................17II6.5其它零部件的设计........................................................................................187塑料注射机的有关参数校核..................................................................................197.1型腔数量的校核............................................................................................197.2最大注射量的校核..............................................