耳机塑料模具设计【18张CAD图纸和说明书】
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编号：10106406
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上传时间：2018-05-15
上传人：俊****计
认证信息
个人认证
束**（实名认证）
江苏
IP属地：江苏
40
积分
- 关 键 词：
-
耳机
塑料
模具设计
18
cad
图纸
以及
说明书
仿单
- 资源描述：
-
摘要
近年来，工程塑料以其优异的性能获得了越来越广泛的应用。而注塑模具是
其中发展较快的种类，在人们生活的各个领域都能够见到塑料制品。因此，研究
注塑模具对了解塑料产品的生产过程和提高产品质量有很大意义。
本设计分析了耳机的结构，提出了模具设计的关键点，设计了模具的整体结
构。根据塑件分型面的位置，设计了斜导柱外侧抽芯结构，零件采用了单分型面
的点浇口，提高了零件的外面质量。通过对塑件进行工艺的分析及其结构分析，
从产品结构工艺性，具体模具结构出发，对模具的浇注系统、模具成型部分的结
构、顶出系统、注射机的选择及有关参数的校核都有详细的设计。该模具一模四
腔，采用顶针顶出结构。经过生产验证，该模具结构合理，动作可靠。
关键词：耳机；塑料模具；注射机
- 内容简介：
-
毕业设计（论文）中期报告题目耳机外壳塑料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姓名学号导师2013年3月25日1设计（论文）进展状况1分析零件的成形工艺性通过查阅书籍资料及查阅网络数据，发现聚乙烯塑料重量轻，物理性能、化学性能及电气性能等均很优良，且很容易成型，价格便宜。所以，最终确定所制作塑件材料为低压聚乙烯，并根据实体塑件测量出实际尺寸。2）浇注系统的选择根据所选塑料的工艺性及塑件的形状，决定选取点浇法浇注，所选浇口类型为侧浇口。3）分型面的选择选择塑件截面最大的部位。4）浇注系统的设计与选择包括主流道、分流道、浇注口的设计与选择。5）绘制完成了塑件的CAD二维图和PROE三维图，绘制模具装配图草图。6）设计的耳机塑件图见图1二维零件图图2三维零件图7）方案确定（1）课题名称耳机模具设计（2）材料选择聚乙烯（3）生产批量大（4）精度要求中（5）塑料等级6级（6）方案确定该产品为大批量生产。故设计的模具要有较高的注塑效率，浇注系统要能自动脱模，可采用点浇口自动脱模结构。由于该塑件要求批量大，制件较小，为取得较大的经济效益，所以模具采用一模四腔结构。此方案生产效率高，操作简便，动作可靠，方便脱出流道凝料，经济性价比高，故选此次模具设计选用方案。模具设计图见图3图3装配图2存在问题及解决措施在本次设计阶段内，我深刻的体会到自己所储备的知识的不足，以及所查阅资料的缺乏和片面性。尤其针对于注塑机的选型过程，大部分的资料里面都只有注塑机的型号和具体性能数据，但是却缺少如何选择与校核的方法，令人百思不得其解。最后，本着求同存异的想法，综合多处查询资料的结果，选择基础结构，进行设计。我也应该加强自己对塑料模具知识的学习，努力使自己所设计出来的模具更具备可行性和实用性。同时，也应该加强自己与老师、与同学之间的沟通，使自己的设计在互相印证中得到提高和完善，加深自己对本次设计的理解。最后，我相信自己可以保持积极乐观的态度去继续接下来的设计过程。在老师的悉心教导下，能够快速、有效的完成所有设计流程，并最终顺利结束本次毕业设计。3后期工作安排1、接下来将用两周左右的时间对成型零件的设计计算彻底完成。2、用两周时间绘制模具各主要零部件的零件图及总体装配图。3、用两周时间用PROE绘图软件对主要零部件进行三维建模，绘制出爆炸图。4、用两周时间整理相关资料，撰写毕业论文，准备毕业答辩。指导教师签字年月日INTJADVMANUFTECHNOL2001172973042001SPRINGERVERLAGLONDONLIMITEDOPTIMUMGATEDESIGNOFFREEFORMINJECTIONMOULDUSINGTHEABDUCTIVENETWORKJCLINDEPARTMENTOFMECHANICALDESIGNENGINEERING,NATIONALHUWEIINSTITUTEOFTECHNOLOGY,YUNLIN,TAIWANTHISSTUDYUSESTHEINJECTIONPOSITIONANDSIZEOFTHEGATEASTHEMAJORCONTROLPARAMETERSFORASIMULATEDINJECTIONMOULDONCETHEINJECTIONPARAMETERSGATESIZEANDGATEPOSITIONAREGIVEN,THEPRODUCTPERFORMANCEDEFORMATIONCANBEACCURATELYPREDICTEDBYTHEABDUCTIVENETWORKDEVELOPEDTOAVOIDTHENUMEROUSINFLUENCINGFACTORS,FIRSTTHEPARTLINEOFTHEPARAMETEREQUATIONISCREATEDBYANABDUCTIVENETWORKTOLIMITTHERANGEOFTHEGATETHEOPTIMALINJECTIONPARAMETERSCANBESEARCHEDFORBYASIMULATIONANNEALINGSAOPTIMISATIONALGORITHM,WITHAPERFORMANCEINDEX,TOOBTAINAPERFECTPARTTHEMAJORPURPOSEISSEARCHINGFORTHEOPTIMALGATELOCATIONONTHEPARTSURFACE,ANDMINIMISINGTHEAIRTRAPANDDEFORMATIONAFTERPARTFORMATIONTHISSTUDYALSOUSESAPRACTICALEXAMPLEWHICHHASBEENANDPROVEDBYEXPERIMENTTOACHIEVEASATISFACTORYRESULTKEYWORDSABDUCTIVENETWORKINJECTIONMOULDSIMULATIONANNEALINGSA1INTRODUCTIONOWINGTOTHERAPIDDEVELOPMENTOFINDUSTRYANDCOMMERCEINRECENTYEARS,THEREISANEEDFORRAPIDANDHIGHVOLUMEPRODUCTIONOFGOODSTHEPRODUCTSAREMANUFACTUREDUSINGMOULDSINORDERTOSAVETHETIMEANDCOSTPLASTICPRODUCTSARETHEMAJORITYOWINGTOTHESEPRODUCTSNOTREQUIRINGCOMPLICATEDPROCESSESITISPOSSIBLETOCOPEWITHMARKETDEMANDSPEEDILYANDCONVENIENTLYINTRADITIONALPLASTICPRODUCTION,THEDESIGNSOFTHEPORTIONSOFTHEMOULDAREDETERMINEDBYHUMANSHOWEVER,BECAUSEOFTHEINCREASEDPERFORMANCEREQUIREMENTS,THECOMPLEXITYOFPLASTICPRODUCTSHASINCREASEDFIRST,THEGEOMETRICSHAPESOFTHEPLASTICPRODUCTSAREDIFFICULTTODRAW,ANDTHEINTERNALSHAPEISOFTENCOMPLEXWHICHALSOAFFECTSTHEPRODUCTIONOFTHEPRODUCTINJECTIONPROCESSINGCANBEDIVIDEDINTOTHREESTAGESCORRESPONDENCEANDOFFPRINTREQUESTSTODRJCLIN,DEPARTMENTOFMECHANICALDESIGNENGINEERING,NATIONALHUWEIINSTITUTEOFTECHNOLOGY,YUNLIN632,TAIWANEMAILLINRCKSUNWSNHITEDUTW1HEATTHEPLASTICMATERIALTOAMOLTENSTATETHEN,BYHIGHPRESSURE,FORCETHEMATERIALTOTHERUNNER,ANDTHENINTOTHEMOULDCAVITY2WHENTHEFILLINGOFTHEMOULDCAVITYISCOMPLETED,MOREMOLTENPLASTICSHOULDBEDELIVEREDINTOTHECAVITYATHIGHPRESSURETOCOMPENSATEFORTHESHRINKAGEOFTHEPLASTICTHISENSURESCOMPLETEFILLINGOFTHEMOULDCAVITY3TAKEOUTTHEPRODUCTAFTERCOOLINGTHOUGHTHEFILLINGPROCESSISONLYASMALLPROPORTIONOFTHECOMPLETEFORMATIONCYCLE,ITISVERYIMPORTANTIFFILLINGININCOMPLETE,THEREISNOPRESSUREHOLDINGANDCOOLINGISREQUIREDTHUS,THEFLOWOFTHEPLASTICFLUIDSHOULDBECONTROLLEDTHOROUGHLYTOENSURETHEQUALITYOFTHEPRODUCTTHEISOTHERMALFILLINGMODELOFANEWTONIANFLUIDISTHESIMPLESTINJECTIONMOULDFLOWFILLINGMODELRICHARDSON1PRODUCEDACOMPLETEANDDETAILEDCONCEPTTHEMAJORCONCEPTISBASEDONTHEAPPLICATIONOFLUBRICATIONTHEORY,ANDHESIMPLIFIEDTHECOMPLEX3DFLOWTHEORYTO2DHELESHAWFLOWTHEHELESHAWFLOWWASUSEDTOSIMULATETHEPOTENTIALFLOWANDWASFURTHERMOREUSEDINTHEPLASTICITYFLOWOFTHEPLASTICHEASSUMEDTHEPLASTICITYFLOWONANEXTREMELYTHINPLATEANDFULLYDEVELOPEDTHEFLOWBYIGNORINGTHESPEEDCHANGETHROUGHTHETHICKNESSKAMALETALUSEDSIMILARMETHODSTOOBTAINTHEFILLINGCONDITIONFORARECTANGULARMOULDCAVITY,ANDTHEANALYTICALRESULTOBTAINEDWASALMOSTIDENTICALTOTHEEXPERIMENTALRESULTPLASTICMATERIALFOLLOWSTHENEWTONIANFLUIDMODELFORFLOWINAMOULDCAVITY,ANDBIRDETAL24DERIVEDMOULDFLOWTHEORYBASEDONTHISWHENTHESHAPEOFAMOULDISCOMPLICATEDANDTHEREISVARIATIONINTHICKNESS,THENTHEEQUILIBRIUMEQUATIONSCHANGESTONONLINEARANDHASNOANALYTICALSOLUTIONTHUS,ITCANBESOLVEDONLYBYFINITEDIFFERENCEORNUMERICALSOLUTIONS2,5OFCOURSE,ASTHEPOLYMERISAVISCOELASTICFLUID,ITISBESTTOSOLVETHEFLOWPROBLEMBYUSINGVISCOELASTICITYEQUATIONSIN1998,GOYALETALUSEDTHEWHITEMETZNERVISCOELASTICITYMODELTOSIMULATETHEDISKMOULDFLOWMODELFORCENTRALPOURINGMETZNER,USINGAFINITEDIFFERENCEMETHODTOSOLVETHEGOVERNINGEQUATION,FOULDTHEVISCOELASTICITYEFFECTWOULDNOTCHANGETHEDISTRIBUTIONOFSPEEDANDTEMPERATUREHOWEVER,ITAFFECTSTHESTRESSFIELDVERYMUCHIFITISAPUREVISCOELASTIC298JCLINFLOWMODEL,THEPOPULARGNFMODELISGENERALLYUSEDTOPERFORMNUMERICALSIMULATIONCURRENTLY,FINITEELEMENTMETHODSAREMOSTLYUSEDFORTHESOLUTIONOFMOULDFLOWPROBLEMSOTHERMETHODSAREPUREVISCOELASTICMODELS,SUCHASCFOLWANDMOLDFLOWSOFTWAREWEUSEDTHISMETHO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