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,specificmoldstructuretothesub-surfaceofthemold,pouringsystem,themoldformingpartofthestructure,launchsystems,coolingsystems,injectionmoldingmachineofchoiceandtheparametersofthecalibration,aredetaileddesign.Atthesametimedrawingzhemoldsusetothree-dimensionalmappingprogramofpro/E,thiscomputergraphicssystemhastheimpastocomparedtotheplainviewdrawing.Keywords：injectionmold；systemofgating；systemofcooling；checking.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.1