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导管注塑模具设计论文[带图纸].doc

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导管注塑模具设计论文[带图纸].doc

本科毕业设计论文题目导管注塑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I导管注塑模具设计摘要注塑成型是塑件生产最常用的方法之一。本设计通过注塑模具产品,利用实体模型测量产品的尺寸,对实体进行建模,并对塑件的材料和塑件结构进行分析,并对塑件的模具进行设计,包括塑件成品的设计、工艺参数的分析与计算、工作部分的设计、模具结构的设计和加工方案的制定,确定塑件的最佳浇注位置,并通过实际情况进行调整,从而得到对实际生产来说最合理的浇注位置。在确定模具型腔数目后,分析产品的气穴、熔接痕、充填时间、充填结束时的体积温度、流动前沿处的温度、速度/时间转换点压力、充填结束时的压力、注射位置处压力等,可确定注塑模具的合理性。该模具采用普通浇注系统,由于采用一模两腔的注射结构,必须设置分流道,用点浇口形式从零件端部进料。此次设计中,最关键的是确定型芯和型腔的结构,此外还分析了模具受力,脱模机构的设计、冷却系统的设计等。关键词型腔熔接痕分流道点浇口IICatheterinjectionmolddesignAbstractInjectionmoldingisoneofthemostcommonlyusedmethodofplasticpartsproduction.Thisdesign,injectionmoldproducts,measuringthesizeoftheentitymodel,entitymodeling,andmaterialsofplasticpartsandplasticpartsofthestructureofanalysis,molddesignandplasticparts,includingthedesignofthefinishedplasticparts,analysisandcalculationoftheprocessparameters,thedesignoftheworkingpartofthemoldstructuredesignandprocessingprogramstodevelop,todeterminetheplasticpartsofthecastingpositionandadjusttheactualsituation,inordertogetthemostreasonablefortheactualproductionofcastingposition.Determinethenumberofmoldcavity,thecavitationanalysisproducts,Weld,fillingtime,fillingtheendofthevolumeoftemperatureatthetemperatureoftheflowfrontvelocity/timeconversionpointpressure,thepressureinthefillingattheendoftheinjectionsiteatthepressurecandeterminetherationalityoftheinjectionmold.Themoldusingacommongatingsystem,usingatwocavitymoldinjectionstructuremustbesettoshuntfeedthelatentformofpointgatefrominsidethepart.Thisdesign,themostcriticalistodeterminethestructureofthecoreandcavity,inadditiontoanalysisofthemoldbyforce,thedesignofmoldrelease,andthecoolingsystemdesign.KeyWordscavityweldshuntpointgateIII目录1绪论...........................................................................................................................11.1塑料成型与注塑模具..........................................................................................11.2国内外相关发展状况...........................................................................................11.2.1国内发展状况...................................................................................................11.2.2国外发展状况...................................................................................................21.3塑料模具发展走势................................................................................................22塑件材料分析与方案论证................................................................................42.1塑件的工艺分析....................................................................................................42.1.1塑件的材料.......................................................................................................42.1.2尼龙的基本特性...............................................................................................42.1.3尼龙的成型特点...............................................................................................42.1.4尼龙的主要用途...............................................................................................52.1.5尼龙的注射成型工艺参数...............................................................................52.2塑件的成型工艺...................................................................................................52.2.1注射成型的原理...............................................................................................52.2.2注射成型的工艺过程.......................................................................................62.2.3注射成型工艺参数...........................................................................................72.2.4注塑模的机构组成...........................................................................................82.3方案论证................................................................................................................83注射成型机的选择.............................................................................................113.1估算塑件体积......................................................................................................113.2估算塑件质量......................................................................................................113.3注塑机的注射容量..............................................................................................113.4锁模力..................................................................................................................113.5选择注塑机及注塑机的主要参数......................................................................123.5.1注射机的选择.................................................................................................123.5.2XSZY125型注塑机的主要参数.................................................................123.6注塑机的校核......................................................................................................124浇注系统设计......................................................................................................144.1浇注系统的功能..................................................................................................144.1.1浇注系统的组成.............................................................................................144.1.2浇注系统设计原则.........................................................................................14IV4.1.3浇注系统布置.................................................................................................144.2流道系统设计.....................................................................................................144.2.1主流道设计.....................................................................................................154.2.2冷料井设计.....................................................................................................164.2.3分流道设计.....................................................................................................164.2.4浇口设计.........................................................................................................175成型零件设计......................................................................................................195.1分型面的设计......................................................................................................195.2成型零件应具备的特能......................................................................................195.3成型零件的结构设计..........................................................................................205.3.1凹模(型腔)结构设计.................................................................................205.3.2型芯的结构设计.............................................................................................205.4成型零件工作尺寸计算......................................................................................215.4.1影响塑件尺寸和精度的因素.........................................................................215.4.2成型零件工作尺寸的计算.............................................................................225.4.3模具型腔侧壁和底板厚度的计算.................................................................236导向机构的设计.................................................................................................266.1导向机构的作用..................................................................................................266.2导柱导向机构......................................................................................................266.2.1导向机构的总体设计.....................................................................................266.2.2导柱的设计.....................................................................................................276.2.3导套的设计.....................................................................................................277脱模机构的设计.................................................................................................287.1脱模机构的结构组成..........................................................................................287.1.1脱模机构的设计原则.....................................................................................287.1.2脱模机构的结构.............................................................................................287.1.3脱模机构的分类.............................................................................................287.2脱模力的计算......................................................................................................297.3简单脱模机构......................................................................................................297.3.1推件板脱模机构的设计要点.........................................................................297.3.2推件板的形状.................................................................................................317.3.3顶杆强度的计算.............................................................................................317.4复位装置..............................................................................................................318侧向分型与抽芯机构设计..............................................................................32

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