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灭火器端盖注射模设计论文[带图纸].doc

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灭火器端盖注射模设计论文[带图纸].doc

I灭火器塑料注射模设计摘要塑料模具是塑料加工工业中和塑料成型机配套,赋予塑料制品以完整构型和精确尺寸的工具。本课题主要是针对灭火器端盖的注塑模具设计,灭火器端盖具有重量轻、易清洁、耐腐蚀老化、强度高、使用寿命长,制作方便、价格低廉等特点。本次设计主要是根据塑件的外形及塑料的工艺性,确定模具的分型面,浇注系统、选择了注射机、计算了模具成型零件的尺寸,并设计了托板等其他零部件。本设计中采用点浇口注射,利用斜导柱抽芯机构和和斜滑块抽芯机构进行侧向抽芯,推管完成脱模。通过整个设计过程表明该模具能够达到此塑件所要求的加工工艺,运动可靠,结构合理。关键词灭火器塑料注射模设计注射模点浇口斜导柱IIFireextinguisherinplasticinjectionmolddesignAbstractPlasticmoldistheplasticsindustryandplasticmoldingmachineformacompleteset,giveplasticproductstocompleteconfigurationandaccuratesizeoftools.Themaintopiciscoveredinmolddesignforthefireextinguisher,thefireextinguishercoveredwithalightweight,easytoclean,corrosionresistantaging,highstrength,longservicelife,makingeasy,lowpricesandsoon.Thedesignisbasedmainlyonplasticpartsandplasticformoftheprocesstodeterminethemoldsurface,gatingsystem,selecttheinjectionmachines,moldingpartstocalculatethesizeofmold,andthedesignoftheSupportingPlateandothercomponents.Thisdesignwithsomerunnerinjection,usingtheobliqueguidecolumncorepullingmechanismandandobliqueslipperypiecesofcorepullingmechanismforlateralcorepulling,pushthefinishstripping.Throughtheentiredesignprocessthatcanbeachievedinthemoldplasticpartsrequiredinthisprocess,movementisreliable,thestructureisreasonable.KeywordsFireextinguisherplasticinjectionmoulddesignInjectionmouldPointgateInclinedguidepillarIII主要符号表α角△塑料制件尺寸公差δ模具成型零件制造公差μ塑料对金属的摩擦系数I目录摘要.....................................................................................................................................IAbstract............................................................................................................................II主要符号表....................................................................................................................III1绪论.............................................................................................................................11.1概述.........................................................................................................................11.2塑料模具发展状况.................................................................................................21.3本次设计的目的及意义.........................................................................................32塑件材料分析与方案论证...................................................................................52.1塑件的工艺分析.....................................................................................................52.1.1塑件的材料...................................................................................................52.1.2聚丙烯的基本特性.......................................................................................52.1.3聚丙烯的成型特点.......................................................................................52.1.4聚丙烯的注射成型工艺参数......................................................................52.2方案论证.................................................................................................................62.2.1研究对象.......................................................................................................62.2.1研究方案.......................................................................................................73注射成型机的选择.................................................................................................93.1估算塑料体积.........................................................................................................93.2注塑机的注射容量.................................................................................................93.4注塑机选择及其相关参数.....................................................................................93.4.1注塑机选择...................................................................................................93.4.2XSZY1000型注塑机的主要参数.............................................................93.5注塑机的校核.......................................................................................................103.5.1最大注射量校核.........................................................................................103.5.2锁模力校核.................................................................................................103.5.3模具厚度校核.............................................................................................103.5.4开模行程校核..............................................................................................114浇注系统设计........................................................................................................124.1浇注系统的功能...................................................................................................124.1.1浇注系统的组成.........................................................................................124.1.2浇注系统设计原则.....................................................................................124.1.3浇注系统布置.............................................................................................134.2流道系统设计.......................................................................................................144.2.1主流道设计.................................................................................................14II4.2.2冷料井设计.................................................................................................154.2.3分流道设计.................................................................................................154.2.4浇口设计.....................................................................................................165侧向分型与抽芯机构设计...................................................................................185.1侧向分型与抽芯机构的分类...............................................................................185.2斜滑块侧向分型与抽芯机构...............................................................................185.2.1斜滑块侧向分型与抽芯机构设计要点.....................................................185.2.2斜滑块侧向分型与抽芯机构的工作原理.................................................195.2.3斜滑块推出高度的计算.............................................................................195.3斜导柱侧向分型与抽芯机构...............................................................................195.3.1斜导柱侧向分型与抽芯机构设计要点.....................................................195.3.2斜导柱侧向分型与抽芯机构工作原理.....................................................205.3.3斜导柱侧向分型与抽芯机构相关参数计算.............................................205.3.4斜导柱侧向分型与抽芯机构的结构设计.................................................216顶出机构的设计....................................................................................................236.1顶出机构的驱动方式...........................................................................................236.2顶出机构的设计原则..........................................................................................236.3简单脱模机构.......................................................................................................246.3.1顶管脱模机构的设计要点.........................................................................246.3.2推管的形状.................................................................................................246.3.3复位装置.....................................................................................................257成型零件设计...........................................................................................................267.1分型面的设计.......................................................................................................267.2成型零件应具备的性能.......................................................................................277.3影响塑料制件尺寸精度的因素...........................................................................277.4成型零件工作尺寸的计算...................................................................................287.4.1型腔径向尺寸.............................................................................................287.4.2型腔深度尺寸.............................................................................................287.4.3型芯径向尺寸.............................................................................................297.4.4型芯高度尺寸.............................................................................................298注塑模具的保养......................................................................................................309结论...............................................................................................................................31参考文献.........................................................................................................................32致谢..............................................................................................................................34

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