双色收音机外壳塑件模设计毕业论文.doc -- 7 元

摘要双色收音机外壳塑件的结构特点介绍了双色塑料注射成型工艺，以双色收音机外壳塑件为例分析了双色注射模的技术要求、结构特点、工作过程及设计要点，重点介绍了浇注系统的设计。本设计遵循高效、优质、低成本的理念，力图把该产品推进到千家万户。设计过程中按照国家在机械设计方面有关标准，在零件制造、产品装配、标准件选择等均严格按照标准执行。本设计所涉及的技术资料有机械设计塑料成型工艺有色金属材料成型工艺等等。本文主要是对双色塑料收音机外壳注塑模的设计进行描述。首先，本文将概述双色收音机外壳塑件设计的结构特点，材料的选用，塑料的性能,并且阐述选择这种原料的原因。其次，本文将讲述双色塑料收音机外壳的模具结构设计。再次，本文将讲述双色塑料收音机外壳的模具设计计算。最后，本文将简单讲述模具的试模与修模.关键词收音机外壳，注射模，双色AbstractTheinjectionfornmingtechnologyforbicolourplasticsisintroduced.Withthebicolourplastickeyasanexample,thetechnicalrequirement,structurechatacteristicsworkingprocessandmaindesignisputonthedesignpointoftheinjectionmouldforbicolourplastricareamalyzde.Theemplhasisisputonthedesignofthefeedingsystem.Thestructurecharacteristicsoftheinjectionmouldforbicolourchainistheborderuponchainisconnectedwitheachother.Thisdesigntrieshardtodesignoneproductofsimplystructure,strongserviceability,andeasytooperate.Intheprocess,accordingtothenationalityinmachinedesignstandard,wewerestrictlyexecutingthestandardinpartdesign,assemblyandsoon.Followingtheconceptofhighefficiency,excellentquality,lowcost，andtrytosendthechainintothousandsoffamilies.Aslothedataisrelatedtothisdesignmechanismdesign、ploymermoldingtechnics、colouredmetalmaterialsmoldingtechnicsandsoon.Inthistext,IwillmainlydescribetheDesignoftheinjectionmouldforplasticproductsoftheinfinitelylongchain.Atfirst,Iwillintroducethestructurecharacteristic,thematerialtochooseandthecapabilityofthematerialofthem,explainingthereasontochoosethematerial.Thesecond,Iwilldescribethestructuredesignoftheinjectionmouldforinfinitelylongplasticchain.Atlast,Iwillintroducethecalculationdesignoftheinjectionmouldforinfinitelylongplasticchain.AtthesuABSlement,Iwillintroduceinanutshelltheprobationandfixingofthemould.KeywordsDualradioshellplasticpartsInjectionmould,DoubleColor目录1.绪论..................................................................12.双色注射成型工艺简介艺分析............................................22.1传统射出成型与双料共射出成型之比较.............................22.2成型过程....................................................22.3模具结构特点及要求...........................................23.塑件的工艺分析........................................................43.1.塑件的使用性能..............................................43.2.塑件的尺寸精度..............................................43.3.塑件表面质量................................................43.4.塑件的塑件的结构及成型工艺性分析..............................43.4.1结构分析....................................................43.4.2成型工艺分析................................................43.5.产品模流分析..............................................63.5.1Moldflow有限元分析简介......................................63.5.2产品模型简介................................................63.5.3原始方案浇注系统设计........................................73.5.4充填时间....................................................83.5.5缝合线位置和包风分布........................................93.5.6注射压力与锁模力变化曲线....................................93.5.7分析结果及建议.............................................103.6.原材料的工艺性............................................103.6.1注射成型过程...............................................103.6.2ABS的性能分析..............................................103.6.3丙ABS与TPE的共混性.......................................133.6.4ABS成型塑件的主要缺陷及消除措施............................174．成型设备的选择及校核.................................................194.1注塑机的初选................................................194.1.1计算塑件的体积..............................................194.1.2计算塑件的质量..............................................194.2注射量校核.................................................214.3锁模力的校核...............................................214.4最大注射压力校核............................................214.5安装尺寸的校核.............................................224.6开模行程和推出机构的校核....................................224.7模架尺寸与注射机拉杆内间距校核................................235.分型面的确定..........................................................246.浇注系统的确定........................................................256.1主流道尺寸设计...................................................256.2分流道设计.................................................266.3冷料穴的设计...............................................276.4浇口的设计.................................................287.排气结构设计..........................................................308.温度调节系统设计......................................................318.1加热系统...................................................318.2冷却系统...................................................319.模架的确定和标准件的选用..............................................3410.合模导向机构的设计...................................................3510.1导向机构的总体设计.........................................3510.2导柱的设计................................................3510.3导套设计..................................................3511.侧向分型与抽芯机构的设计.............................................3711.1侧向分型与抽芯机构类型的确定................................3711.2斜滑块的组合形式...........................................3711.3斜滑块的导滑形式...........................................3811.4斜滑块的装配要求...........................................3811.5斜滑块推出时的限位.........................................38