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对讲机后盖的注塑模具设计说明书.doc

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对讲机后盖的注塑模具设计说明书.doc

I摘要针对对讲机后盖进行了注塑模具设计。通过对塑件进行工艺的分析和比较,最终设计出一副注塑模。该课题从产品结构工艺性,具体模具结构出发,对注塑机的选择及有关参数的校核、模具的分型面、浇注系统、模具成型部分的结构、推出系统、冷却系统进行了设计。同时运用三维pro/E制图软件绘制该模具,与平面图相比更具立体感。关键词注塑模具浇注系统冷却系统校核IIAbstractThistopicismainlyforradioshellmolddesign,plasticpartsthroughtheprocessofanalysisandcomparisontothefinaldesignaninjectionmold.Processfromtheproductstructureonthesubjectof,specificmoldstructuretothesubsurfaceofthemold,pouringsystem,themoldformingpartofthestructure,launchsystems,coolingsystems,injectionmoldingmachineofchoiceandtheparametersofthecalibration,aredetaileddesign.Atthesametimedrawingzhemoldsusetothreedimensionalmappingprogramofpro/E,thiscomputergraphicssystemhastheimpastocomparedtotheplainviewdrawing.Keywordsinjectionmoldsystemofgatingsystemofcoolingchecking.III目录摘要.............................................................IAbstract..........................................................II第1章绪论......................................................11.1模具工业的应用概况........................................11.2我国塑料模具工业的发展概况................................2第2章方案选择.........................................................42.1注射模的组成与分类........................................42.1.1注射模的组成.........................................42.1.2注射模的分类.........................................52.2塑件成型工艺分析..........................................52.2.1注射模的设计方法与研究现状...........................52.2.2塑件分析.............................................62.2.3制品材料的成形特性与工艺分析.........................82.3注射成型机的选择.........................................102.3.1注射量的计算........................................102.3.2浇注系统凝料体积的初步估算..........................102.3.3注射机的选择........................................102.4分型面设计...............................................112.4.1分型面作用、形式和设计原则..........................112.4.2分型面的确定........................................122.5型腔设计.................................................142.5.1型腔数目的确定......................................142.5.2型腔排列形式的确定..................................152.5.3型腔壁厚尺寸的确定..................................152.6模具结构形式的设计.......................................152.7模具材料的选用...........................................18第3章部件的设计计算...........................................193.1浇注系统设计.............................................193.1.1浇注系统的设计原则..................................19IV3.1.2主流道的设计........................................193.1.3分流道的设计........................................213.1.4浇口设计............................................233.1.5冷料穴与拉料杆设计..................................243.2成型零件工作尺寸的计算...................................253.2.1定模板及其支撑板....................................253.2.2动模板及其支撑板....................................263.2.3垫块................................................273.2.4导向机构............................................283.2.5侧向抽芯机构......................................283.3推出机构的设计..........................................293.3.1推出机构的设计原则..................................293.3.2推出机构的分类......................................303.3.3推出力的计算........................................303.3.4推出零件尺寸的确定..................................313.3.5推杆位置的确定......................................323.4冷却回路设计.............................................333.4.1冷却系统的设计原则..................................333.4.2冷却水路的形式......................................333.4.3冷却计算(水道的直径wd与总长度l)..................34第4章校核.....................................................374.1注射量的校核.............................................374.2锁模力校核...............................................374.3最大注射压力的校核.......................................384.4最小模厚的校核.........................................384.5推出零件的强度和刚度校核.................................384.6冷却水流动状态Re的校核..............................39结论...........................................................40致谢...........................................................41参考文献.........................................................42VCONTENTSAbstract.....................................................................................................................IIChapter1Introduction..........................................................................................11.1Plasticmould...............................................................................................11.2Injectionmoulddevelopmentsituationathomeandabroad......................2Chapter2Selectionofscheme..........................................................................................42.1Injectsmouldcompositionandtheclassification...................................42.1.1TheformofInjectionmould.............................................................42.1.2ThesortofInjectionmould...............................................................52.2Theanalysisofplasticmoldingprocess......................................................52.2.1Injectsmoulddesignmethodandthesituation.....................................52.2.2Theanalysisofplastic.................................................................................62.2.3Productmaterialformedcharacteristicandprocess.............................82.3Injectionmaxhine......................................................................................102.3.1Calculationofinjectionquantity.....................................................102.3.2Thevolumeestimateofmaterialgatingsystem..............................102.3.3Theinjection....................................................................................102.4Theselectionpartingsurface....................................................................112.4.1Thedesignprinciplesofselectionparting............................................112.4.2Theselectionpartingsurface...........................................................122.5Designofthecavity..................................................................................142.5.1Thenumberofcavity......................................................................142.5.2Thearrangementofcavity..............................................................152.5.3Thearrangementofcavity..............................................................152.6Theformofmouldstructure.....................................................................152.7Mouldmaterialschosen............................................................................18Chapter3Partsofthedesignandcalculation...................................................193.1Designgatingsystem................................................................................193.1.1Thedesignprinciplesofdesigngatingsystem...............................193.1.2Designofthemainstream................................................................193.1.3Designoftheshunting....................................................................21

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