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I年产600万件手机后盖注塑成型工艺设计摘要手机后盖是手机机外壳的重要构成部分，不仅是消费者审美的体现，同时能保护内部元件不受损害。目前主流的成型方法是注塑成型，但生产中存在表面质量不高，后续加工步骤多、工序繁杂等问题，此次毕业设计会对以上问题进行改进优化。该设计的图纸包括成型设备图、注射模具装配图、成型工艺流程图、物料循环图、车间布局图、全厂布局图、制品图，说明书内容包括制品规格的确定、生产配方的优化、确定适当的成型方法和所需的成型设备（注射机、辅助成型）台数、对生产过程进行热量衡算和物料衡算、合理的车间和工厂布局（水路、电路）、最后进行工厂效益的核算。本次突出设计的模具的流道采用的是热流道设计，流道中的凝料一直处于熔融态，无需凝料脱出，缩短成型周期，提高生产效率，也无需凝料回收加工，同时可以提升制品的表面质量。关键词：手机后盖，注塑成型，热流道IITheInjectionMoldingProcessDesignof6MillionMobilePhoneBackCoverABSTRACTThemobilephonecoverisoneimportantcomponentpartsofthemobilephoneshell,notonlyembodiestheconsumeraesthetic,butalsoprotecttheinternalcomponentsfromdamage.Thecurrentmainformingmethodisinjectionmolding.Intheproduction,therearemanyproblems,suchas,thesurfacequalityisbadly,thesubsequentprocessingstepsistomuch,theprocessiscomplicated,Thisgraduationdesignwillbeoptimizedontheaboveproblems.Thedesigndrawingsincludemoldingequipmentdrawing,injectionmoldassemblydrawing,moldingprocessflowdiagram,materialcyclediagram,workshoplayout,wholeplantlayoutdrawing.Theinstructionsofincludedeterminingthespecificationsofproduction,theoptimizationofproductionformula,thepropermoldingMethodandequipmentformolding(injectionmoldingmachine,auxiliaryunits).Beside,I’llcalculatetheheatqualityandmaterialintheprocessoftheproduction,thereasonablelayoutofworkshopandfactory(water,plant,circuit)andthebenefitsoffactory.Finallythedesignoftherunnermoldishotrunner,thecoagulationmaterialinwhichhasbeeninamoltenstate,withouttheextrusion,themoldingcyclewillbeshortenandtheefficiencywillbeimproved.Atthesametime,thereisnoneedtorecycleandprocessthecoagulationmaterial,andthismethodcanimprovethesurfacequalityoftheproducts.KEYWORDS:Mobilephonecover，Injectionmolding，Hotrunner1目录前言................................................................................................3第1章制品分析及生产配方设计...................................................51.1制品结构分析和工艺分析...................................................51.1.1制品结构分析.............................................................51.1.2制品工艺及性能分析.................................................61.2产品配方设计.......................................................................7第2章注射机型号的选定...............................................................92.1制品体积、重量的计算.......................................................92.2型腔数目的确定...................................................................92.3注射机型号的确定.............................................................102.4注射机工艺参数校核.........................................................102.4.1注射机注射容积的校核............................................102.4.2注射机注射压力的校核............................................112.4.3注射机锁模力的校核...............................................112.4.4注射机开模行程校核...............................................112.4.5注射机与模具安装部位相关尺寸的校核................11第3章模具结构的设计.................................................................133.1浇注系统的设计.................................................................133.2成型零部件设计.................................................................143.3导向和定位部分的设计.....................................................143.4脱模机构的设计.................................................................143.5排气机构的设计.................................................................153.6模温调节系统的设计.........................................................153.7注射模具模架的选择.........................................................153.8注射模具材料的选择.........................................................16第4章注塑工艺过程及过程控制.................................................174.1工艺过程.............................................................................174.1.1成型前的准备过程...................................................174.1.2注射过程...................................................................1724.1.3后处理.......................................................................174.2注射过程控制.....................................................................184.2.1塑化...........................................................................184.2.2流动与冷却...............................................................18第5章工厂设计与计算.................................................................205.1物料与能量计算.................................................................205.1.1物料衡算...................................................................205.1.2能量衡算...................................................................205.2车间布置.............................................................................225.2.1生产设备布局...........................................................225.2.2车间非工艺设计.......................................................225.3工厂布置.............................................................................23第6章工厂生产和效益计算.........................................................246.1生产安排.............................................................................246.1.1生产人员的配备.......................................................246.1.2车间人员编制...........................................................246.2工厂