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MP3电池充电器插座的塑料注射模具设计论文[带图纸].doc

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MP3电池充电器插座的塑料注射模具设计论文[带图纸].doc

本科毕业设计论文题目MP3电池充电器插座的塑料注射模具设计系别机电信息系专业机械设计制造及其自动化班级学生学号指导教师2013年05月IMP3电池充电器插座的塑料注射模具的设计摘要本次设计主要是通过对塑件的形状、尺寸及其精度的要求来进行注射成型工艺的可行性分析。塑件的成型工艺性主要包括塑件的壁厚,斜度和圆角以及是否有抽芯机构。通过以上的分析来确定模具分型面、型腔数目、浇口形式、位置大小其中最重要的是确定型芯和型腔的结构,例如是采取整体式还是镶拼式,以及它们的定位和固紧方式。此外还分析了模具受力,脱模机构的设计,合模导向机构的设计,冷却系统的设计等,最后绘制完整的模具装配总图和主要的模具零件图。关键词注射成型分型面成型零件抽芯机构IITheDesignofPlasticInjectionMoldforMP3BatteryChargerSocketAbstractThisdesignismainlythefeasibilityanalysisofplasticpartsoftheshape,sizeandaccuracyrequirementsforinjectionmoldingprocess.Moldingofplasticpartsincludingplasticpartswallthickness,inclinationandfilletandwhethercorepullingmechanism.Throughtheaboveanalysistodeterminethemoldpartingsurface,cavitynumber,gatetheform,placethesizethemostimportantistodeterminethecoreandcavitystructure,forexample,istotakethewholethetypeoftypestill,andtheirfixedpositionandtightway.Inaddition,theforceofthemold,demouldingmechanismdesign,molddesignguidemechanism,coolingsystemdesign,thedieassemblydrawingandthemainpartsofthediedrawing.KeyWordsInjectionmoldingpartingsurfacemouldedpartscorepullingmechanismIII目录1绪论..........................................................................................................................12产品分析..............................................................................................................322.1塑件分析..............................................................................................................22.1.1结构分析........................................................................................................22.1.2尺寸精度分析................................................................................................22.1.3塑件厚度检测................................................................................................32.2塑件的原材料分析..............................................................................................32.2.1ABS的基本特性...........................................................................................32.2.2成形特性........................................................................................................42.3注射模方案的确定..............................................................................................53塑件相关计算及注塑机的选择......................................................................63.1投影面积计算......................................................................................................63.2体积及质量计算..................................................................................................63.3塑件和流道凝料在分型面上的投影面积及所需锁模力的计算......................73.4注射工艺参数确定..............................................................................................83.5注塑机选择及注射工艺参数确定......................................................................83.6型腔数量及注射机有关工艺参数的校核..........................................................93.6.1型腔数量的校核............................................................................................93.6.2注射机工艺与安装参数的校核....................................................................94模具结构分析及设计.......................................................................................104.1拟定型腔布局....................................................................................................104.1.1分型面位置的确定......................................................................................104.1.2型腔数目的确定..........................................................................................114.1.3型腔的布局..................................................................................................114.2浇注系统设计....................................................................................................134.2.1总体设计......................................................................................................134.2.2主流道设计..................................................................................................134.2.3分流道设计..................................................................................................144.2.4冷料穴设计..................................................................................................154.2.5进料口设计..................................................................................................154.2.6浇口套及定位圈的设计..............................................................................164.3模架的确定及标准件的选用...........................................................................17IV4.4成型零部件设计................................................................................................184.4.1成型零件的材料选择..................................................................................184.4.2成型零件结构设计......................................................................................184.4.3成型零部件的设计与计算..........................................................................194.5侧向分型抽芯机构设计....................................................................................224.5.1侧向分型抽芯机构类型选择......................................................................224.5.2抽芯距确定与抽芯力的计算......................................................................224.5.3斜导柱分型与抽芯机构零部件设计..........................................................234.5.4楔紧块的设计..............................................................................................244.5.5滑块的精确导向..........................................................................................254.6合模导向机构设计............................................................................................254.6.1导向机构......................................................................................................254.6.2导向零件的设计原则..................................................................................254.6.3导套的设计..................................................................................................264.7脱模机构设计....................................................................................................274.7.1推出机构的设计原则..................................................................................274.7.2顶杆的布置..................................................................................................274.7.3推杆布置......................................................................................................284.7.4推件力的计算..............................................................................................294.7.5推杆的设计..................................................................................................294.8冷却及排气系统设计........................................................................................304.8.1冷却回路的布置..........................................................................................304.8.2求冷却水的体积流量V..............................................................................314.8.3冷却时间计算..............................................................................................314.8.4成型周期计算..............................................................................................324.8.5排气机构......................................................................................................325结论........................................................................................................................32参考文献...................................................................................................................32致谢............................................................................................................................32附录............................................................................................................................32

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