三星手机后盖注射模具设计

集美大学课程设计说明书题目：三星手机后盖注射模具设计姓名：林杰专业：材料成型及控制工程班级：1211班学号：201221136011指导老师：陈怀民樊晓红李波王沁峰胡志超张燕红2016年1月11日三星手机后盖注射模具设计[摘要]注射成型是热塑性塑料成型的主要方法之一，可以一次成型形状复杂的塑件。本次课程设计对三星手机后盖注射模具进行了设计，对塑件结构进行了工艺分析，确定ABS为塑件的材料。采用一模两腔的结构，并根据模具的锁模力选择了注射机，再用注射量、注射压力进行了校核。对浇注系统进行了设计，采用端面进胶的侧浇口，并对流道进行了布置，根据注塑机的型号确定了定位圈与浇口套的尺寸与形式。选择了Futaba公司的标准模架，对顶出装置与冷却系统进行了设计。对成型零件进行了设计，确定了模仁的大小并在Pro/ENGINEER进行开模。进行侧抽结构的设计，确定导柱的倾斜角、长度，并对滑块的结构进行设计。最后在EMX下生成三维图，导入AutoCAD对装配图和零件图进行绘制。[关键词]注射模具；手机后盖；ABS；侧抽机构；EMXDesignofThePlasticMoldofTheBackCoverForSamsungMobileAbstractInjectionmoldingisoneofthemostsignificantmeasuresinthermoplasticsforming,whichcanproducecomplexpartsdirectly.DuringthisMoldCourseDesign,adesignoftheplasticmoldofthebackcoverforSamsungmobilehasbeencarriedout.ThestructureoftheproducthasbeenanalyzedaccordingtothemanufacturingprocessandABSwaschooseasthematerialofthebackcover.Therewouldbetwocavitiesinamoldforincreaseefficiency.Basedonclampingforce,themodelofinjectionmoldingmachinehasbeenchoose,andthecalculationofinjectionvolumeandinjectionpressurehasbeendonetomakesurethemachinecouldworkproperly.Usingsidegateasthewayoffillingcavityandplacingrunnerinproperway,thedesignofgatingsystemhasbeencompleted.Themodelofinjectionmoldingmachinedeterminedthetypeoflocatingringandspruebush.ThemoldbaseofFutabacompanyhasbeenchooseandthedesignofejectsystemandcoolingsystemhavebeendone.Tocreatemoldingparts,thesizeofmoldcorehasbeendecideandtheappearanceofcavityandcorehasbeengeneratedbyPro/ENGINEER.Afterdecidingtheslantangleandlengthofanglepin,figureoutthestructureofslider,thedesignofsidecorepullingsystemhasbeencompleted.Finally,three-dimensionaldiagramhasbeengeneratedbyEMX,andthenithasbeenimportedtoAutoCADtocreateassemblydrawingsandpartdrawings.Keywords:injectionmolding;backcoverofmobile;ABS;sidecorepullingsystem;EMX目录引言··································11零件成形工艺分析···························21.1零件概述·····························21.2零件材料分析···························21.3零件结构工艺性分析························31.3.1零件的壁厚·························31.3.2零件的拔模斜度·······················41.4零件生产要求···························42确定型腔的数目····························53模具胀型力的计算，选择注射设备····················73.1模具胀型力的计算·························73.2注射设备的选择··························73.3注射机有关工艺参数的校核·····················83.3.1最大注射量的校核······················83.3.2注射压力的校核·······················84确定型腔布置·····························94.1型腔按短边并排布置························94.2型腔按长边并排布置·······················105选择分型面·····························116确定浇注系统····························126.1主流道的设计··························126.2分流道设计···························136.2.1分流道截面形状的确定···················136.2.2分流道尺寸设计······················136.3浇口设计····························146.3.1浇口形式的确定······················146.3.2浇口尺寸的确定······················146.4拉料杆设计···························157确定脱模方式····························167.1推杆推出····························167.2推件板推出···························167.3脱模方式的确定·························168冷却系统和推出结构设计·······················178.1冷却系统设计··························178.1.1冷却回路长度的确定····················178.1.2冷却回路的布置······················188.2推出结构设计··························198.2.1推杆的布置························198.2.2复位机构·························199侧向分型与抽芯机构设计·······················209.1抽芯力的确定··························209.2抽芯距的确定··························209.3斜导柱参数确定·························209.3.1斜导柱倾斜角的确定····················209.3.2斜导柱直径的确定·····················209.3.3斜导柱长度的确定·····················219.4滑块设计····························2110凹模和型芯主要尺寸计算和结构设计·················2210.1凹模径向尺寸计算·······················2210.2型芯径向尺寸计算·······················2310.3型腔深度和型芯高度尺寸计算··················2310.4中心矩尺寸计算························2410.5凹模和型芯的结构设计·····················2411模具其它零件设计·························2611.1定位圈设计··························2611.2导向机构设计·························2611.2.1导柱··························2611.2.2导套··························2711.3垃圾钉的选定·························2712模具有关零件的强度和刚度校核···················2812.1斜导柱的强度校核·······················2812.2推杆的强度与刚度校核·····················2812.2.1推出力的计算······················2812.2.2推杆的强度校核·····················2812.2.3推杆的刚度校核·····················2913模具与注射机有关尺寸校核·····················3013.1模具与注射机安装部分相关尺寸的校核··············3013.1.1模具的最大、最小厚度的校核···············3013.1.2动、定模座板安装尺寸校核················3013.2模具开模行程校核·······················3014模具结构三维设计·························32结论·································33致谢语································35参考文献·······························36三星手机后盖注射模具设计11引言注射成型(InjectionMolding)是指有一定形状的模型，通过压力将融溶状态的胶体注入模腔而成型。工艺原理是：将固态的塑胶按照一定的熔点融化，通过注射机器的压力，用一定的速度注入模具内，模具通过水道冷却将塑胶固化而得到与设计模腔一样的产品。主要用于热塑性塑料的成型，也可用于热固性塑料的成型。注射成型的特点主要有：成型周期短，能一次成型形状复杂，尺寸精确，带有金属或非金属嵌件的塑料制品；注射成型的生产率高，易实现自动化生产；除氟塑料以外，几乎所有的热塑性塑料都可以用注射成型的方法成型。但注射成型所用的注射设备价格较高，模具的结构复杂，生产成本高，生产周期长，不适合单件小批量的塑件成型。塑料工业是发展历史短但发展速度惊人的新兴工业之一，同时又是一个伴随着石油工业的发展而迅速发展的领域。塑料模具已处于同冲压模具并驾齐驱的地位。日本在全国一万多家企业中，生产塑料模和生产冲压模的企业各占40%。在韩国的全国模具专业厂中，生产塑料模的占43.9%，生产冲压模的占44.8%。新加坡的460家企业，60%生产塑料模，35%生产冲模和夹具。另外，在我国的、深圳、江浙等