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毕业设计I键盘外壳的注塑模具设计摘要塑料工业是当今世界上增长最快的工业门类之一，而注塑模具是其中发展较快的种类，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。本文对模具行业的发展状况、现代注塑模具设计制造技术、注塑模具的设计方法及过程进行了阐述。采用计算机辅助设计（CAD）可以大大提高设计的精确性；计算机辅助工程（CAE），可以提高塑料模具的设计制造水平及塑件质量；利用计算机辅助加工（CAM）可以把设计师的意图准确的反映在产品上。本文阐述了键盘外壳注射模具的设计计算过程。首先运用传统的模具设计方法，进行键盘外壳的产品设计，确定塑件结构尺寸；然后用Proe软件对塑件进行三维实体造型；对塑件进行结构工艺性和成型工艺性分析，确定塑件结构尺寸和成型方案。运用Proe模块，输入各部分的尺寸和形状参数，生成三维模型，不仅可以直观的了解产品的外形，还可以进行干涉检测等；对注塑机进行校核，包括注塑容量、锁模力、模具外形尺寸、模具厚度尺寸、模具安装尺寸等校核；运用CAD技术可对模具开模、合模以及塑件被脱模的全过程进行仿真，从而检查出模具结构设计的不合理处，并及时更正，以减少修模时间。关键词：键盘外壳；塑料模具；注射成型；CAD；Proe。IIAbstractPlasticindustryisintheworldgrowsnowoneofquickestindustryclasses，butcaststhemoldisdevelopmentquicktype，therefore，theresearchcaststhemoldtounderstandtheplasticproducttheproductionprocessandimprovestheproductqualitytohavetheverybigsignificance.Usingthecomputer-aideddesign(CAD)tobeallowedgreatlytoenhancethedesignaccuracy;Usingthecomputer-aidedmanufacturing(CAM)，thedesigner'sintentionmayaccuratereflectionontheproduct.Thisarticleelaboratedtheplasticinjectmolddesignandcalculationprocessofthepapertoweltube.(1)First，utilizingthetraditionalmolddesignmethoddesignthepapertoweltubeanddefinitethestructureandsizeoftheproduct;ThendrawingthethreedimensionalentitymodelwithProesoftwaretotheproduct。(2)WithProemolddesignmodule，foundsworkpieceandpartingsurface，dividesworkpiece，obtainsthecavity(ofamould)andamoldofaproduct;Calculatethesizeofthemoldshapingcomponents，ThroProehcomputationdeterminateexternaldimensionsofinjectionsystem，temperaturecontrolsystem，guidanceanddetentmechanism，drawingofpatternsorganizationeachsparepart.(3)Proe，inputseachpartofsizesandtheshapeparameter，producesthethree-dimensionalmodel，notonlymaythedirect-viewingunderstandingproductcontour，butalsomaycarryontheinterferenceexaminationandsoon;CarriesonIIItheexaminationtocastingmachine，includingcaststhecapacity，thelockmoldstrength，themoldexternaldimensions，themoldthicknesssize，themoldinstallsexaminationandsoonsize;MayoperatethemoldusingtheCADtechnologytothemold，gatherthemoldaswellastheentireprocesswhichpromotesiscarriedonthesimulation，thusinspectsthemoldstructuraldesignnottobeunreasonableplace，andthepromptcorrection，reducesrepairsthemoldtime.Keyword:Plasticmold;Injectionforming;CAD;Proe-1-目录摘要...............................................................................................................................................IAbstract......................................................................................................................................II第1章绪论.................................................................................................................-1-1.1模具在加工工业中的地位.........................................................................-1-1.2模具的发展趋势.......................................................................................-1-1.3设计在学习模具专业中的作用..................................................................-2-第2章塑件的工艺分析................................................................................-3-2.1塑件成型工艺分析.....................................................................................-3-2.2ASB塑料的成型特性与工艺参数..............................................................-4-第3章成型方案的选择..................................................................................-6-3.1模具结构形式选择.....................................................................................-6-3.2型腔数的确定............................................................................................-7-第4章注塑设备的选择..................................................................................-9-4.1估算塑件体积...........................................................................................-9-4.2模架的选定.............................................................................................-10-4.3选择注射机.............................................................................................-10-第5章模具结构设计.....................................................................................-11-5.1浇注系统的设计......................................................................................-11-5.1.1主流道设计....................................................................................-11-5.1.2分流道设计....................................................................................-12-5.1.3冷料井设计....................................................................................-13-5.1.4浇口选择.......................................................................................-13-5.2分型面的选择与排气系统的设计.............................................................-14-5.2.1分型面的选择................................................................................-14-5.2.2排气系统的设计.............................................................................-15-5.3成型零部件设计.....................................................................................-16-5.3.1型腔结构设计...............................................................................-16--2-5.3.2型芯结构设计...............................................................