外文翻译注塑模具的设计及其热分析英文版.pdf外文翻译注塑模具的设计及其热分析英文版.pdf

收藏 分享

资源预览需要最新版本的Flash Player支持。
您尚未安装或版本过低,建议您

JOURNALOFMATERIALSPROCESSINGTECHNOLOGY1712006259–267ABSTRACTTHEINUNIGRAPHICS,USINGDISTRIBRESULTSATK1INDUSTRIES,ALMOSTUSAGEBYMOLDINGTOATTHEREARETIONAPPROPRIATESYSTEMTHISWITHITYPACKE09240136/DOI101016/JJMATPROTEC200506075DESIGNANDTHERMALANALYSISOFPLASTICINJECTIONMOULDSHTANG∗,YMKONG,SMSAPUAN,RSAMIN,SSULAIMANDEPARTMENTOFMECHANICALANDMANUFACTURINGENGINEERING,UNIVERSITIPUTRAMALAYSIA,43400SERDANG,SELANGOR,MALAYSIARECEIVED3SEPTEMBER2004;ACCEPTED21JUNE2005THISPAPERPRESENTSTHEDESIGNOFAPLASTICINJECTIONMOULDFORPRODUCINGWARPAGETESTINGSPECIMENANDPERFORMINGTHERMALANALYSISFORMOULDTOACCESSONTHEEFFECTOFTHERMALRESIDUALSTRESSINTHEMOULDTHETECHNIQUE,THEORY,METHODSASWELLASCONSIDERATIONNEEDEDDESIGNINGOFPLASTICINJECTIONMOULDAREPRESENTEDDESIGNOFMOULDWASCARRIEDOUTUSINGCOMMERCIALCOMPUTERAIDEDDESIGNSOFTWAREVERSION130THEMODELFORTHERMALRESIDUALSTRESSANALYSISDUETOUNEVENCOOLINGOFTHESPECIMENWASDEVELOPEDANDSOLVEDACOMMERCIALFINITEELEMENTANALYSISSOFTWARECALLEDLUSASANALYST,VERSION135THESOFTWAREPROVIDESCONTOURPLOTOFTEMPERATUREUTIONFORTHEMODELANDALSOTEMPERATUREVARIATIONTHROUGHTHEPLASTICINJECTIONMOLDINGCYCLEBYPLOTTINGTIMERESPONSECURVESTHESHOWTHATSHRINKAGEISLIKELYTOOCCURINTHEREGIONNEARTHECOOLINGCHANNELSASCOMPAREDTOOTHERREGIONSTHISUNEVENCOOLINGEFFECTDIFFERENTREGIONSOFMOULDCONTRIBUTEDTOWARPAGE2005ELSEVIERBVALLRIGHTSRESERVEDEYWORDSPLASTICINJECTIONMOULD;DESIGN;THERMALANALYSISINTRODUCTIONBY“COOLINGSTAGE”WHERETHEMOULDISCOOLEDUNTILTHEPARTISSUFFICIENTLYRIGIDTOBEEJECTEDTHELASTSTEPISTHE“EJECTIONPLASTICINDUSTRYISONEOFTHEWORLD’SFASTESTGROWINGRANKEDASONEOFTHEFEWBILLIONDOLLARINDUSTRIESEVERYPRODUCTTHATISUSEDINDAILYLIFEINVOLVESTHEOFPLASTICANDMOSTOFTHESEPRODUCTSCANBEPRODUCEDPLASTICINJECTIONMOLDINGMETHOD1PLASTICINJECTIONPROCESSISWELLKNOWNASTHEMANUFACTURINGPROCESSCREATEPRODUCTSWITHVARIOUSSHAPESANDCOMPLEXGEOMETRYLOWCOST2THEPLASTICINJECTIONMOLDINGPROCESSISACYCLICPROCESSAREFOURSIGNIFICANTSTAGESINTHEPROCESSTHESESTAGESFILLING,PACKING,COOLINGANDEJECTIONTHEPLASTICINJECMOLDINGPROCESSBEGINSWITHFEEDINGTHERESINANDTHEADDITIVESFROMTHEHOPPERTOTHEHEATING/INJECTIONOFTHEINJECTIONPLASTICINJECTIONMOLDINGMACHINE3ISTHE“FILLINGSTAGE”INWHICHTHEMOULDCAVITYISFILLEDHOTPOLYMERMELTATINJECTIONTEMPERATUREAFTERTHECAVISFILLED,INTHE“PACKINGSTAGE”,ADDITIONALPOLYMERMELTISEDINTOTHECAVITYATAHIGHERPRESSURETOCOMPENSATETHEXPECTEDSHRINKAGEASTHEPOLYMERSOLIDIFIESTHISISFOLLOWED∗CORRESPONDINGAUTHOREMAILADDRESSSAIHONGENGUPMEDUMYSHTANGSTAGE”AFTER4MERICNATEDACTUALTHECOREANDFMOULDGATINGTOSTRESSESDEMOLDEDCONDUCTIMOLTENE–SEEFRONTMATTER2005ELSEVIERBVALLRIGHTSRESERVEDINWHICHTHEMOULDISOPENEDANDTHEPARTISEJECTED,WHICHTHEMOULDISCLOSEDAGAINTOBEGINTHENEXTCYCLETHEDESIGNANDMANUFACTUREOFINJECTIONMOLDEDPOLYPARTSWITHDESIREDPROPERTIESISACOSTLYPROCESSDOMIBYEMPIRICISM,INCLUDINGTHEREPEATEDMODIFICATIONOFTOOLINGAMONGTHETASKOFMOULDDESIGN,DESIGNINGMOULDSPECIFICSUPPLEMENTARYGEOMETRY,USUALLYONTHESIDE,ISQUITECOMPLICATEDBYTHEINCLUSIONOFPROJECTIONDEPRESSION5INORDERTODESIGNAMOULD,MANYIMPORTANTDESIGNINGACTORSMUSTBETAKENINTOCONSIDERATIONTHESEFACTORSARESIZE,NUMBEROFCAVITY,CAVITYLAYOUTS,RUNNERSYSTEMS,SYSTEMS,SHRINKAGEANDEJECTIONSYSTEM6INTHERMALANALYSISOFTHEMOULD,THEMAINOBJECTIVEISANALYZETHEEFFECTOFTHERMALRESIDUALSTRESSORMOLDEDINONPRODUCTDIMENSIONTHERMALLYINDUCEDSTRESSESVELOPPRINCIPALLYDURINGTHECOOLINGSTAGEOFANINJECTIONPART,MAINLYASACONSEQUENCEOFITSLOWTHERMALVITYANDTHEDIFFERENCEINTEMPERATUREBETWEENTHERESINANDTHEMOULDANUNEVENTEMPERATUREFIELDXISTSAROUNDPRODUCTCAVITYDURINGCOOLING7260PROCESSINGENCESCHANNELESIGNIFICANTFORE,OFUNDERSTANDINGTION,BEPRODUCINGMALRESIDUAL221SPECIMENTHATTHINUCTTHEMOULDEDSHELL120MATERIALWTEMPERATURE,RESPECTIDUCED22TESTINGERATIONSTESTINGINJECTIONCARBONTHEIIIIIMEN,DESIGNSIONISMACHINETHETHEREFORE,NOTRESERVSETTINGUPSHTANGETAL/JOURNALOFMATERIALSDURINGCOOLING,LOCATIONNEARTHECOOLINGCHANNELEXPERIMORECOOLINGTHANLOCATIONFARAWAYFROMTHECOOLINGTHISDIFFERENTTEMPERATURECAUSESTHEMATERIALTOXPERIENCEDIFFERENTIALSHRINKAGECAUSINGTHERMALSTRESSESTHERMALSTRESSCANCAUSEWARPAGEPROBLEMTHEREITISIMPORTANTTOSIMULATETHETHERMALRESIDUALSTRESSFIELDTHEINJECTIONMOLDEDPARTDURINGTHECOOLINGSTAGE8BYTHECHARACTERISTICSOFTHERMALSTRESSDISTRIBUDEFORMATIONCAUSEDBYTHETHERMALRESIDUALSTRESSCANPREDICTEDINTHISPAPERTHEDESIGNOFAPLASTICINJECTIONMOULDFORWARPAGETESTINGSPECIMENANDFORPERFORMINGTHERANALYSISFORTHEMOULDTOACCESSONTHEEFFECTOFTHERMALSTRESSINTHEMOULDISPRESENTEDMETHODOLOGYDESIGNOFWARPAGETESTINGSPECIMENTHISSECTIONILLUSTRATESTHEDESIGNOFTHEWARPAGETESTINGTOBEUSEDINPLASTICINJECTIONMOULDITISCLEARWARPAGEISTHEMAINPROBLEMTHATEXISTSINPRODUCTWITHSHELLFEATURETHEREFORE,THEMAINPURPOSEOFTHEPRODDEVELOPMENTISTODESIGNAPLASTICPARTFORDETERMININGEFFECTIVEFACTORSINTHEWARPAGEPROBLEMOFANINJECTIONPARTWITHATHINSHELLTHEWARPAGETESTINGSPECIMENISDEVELOPEDFROMTHINPLASTICSTHEOVERALLDIMENSIONSOFTHESPECIMENWEREMMINLENGTH,50MMINWIDTHAND1MMINTHICKNESSTHEUSEDFORPRODUCINGTHEWARPAGETESTINGSPECIMENASACRYLONITRILEBUTADIENESTYLENEABSANDTHEINJECTIONTIMEANDPRESSUREWERE210◦C,3SAND60MPA,VELYFIG1SHOWSTHEWARPAGETESTINGSPECIMENPRODESIGNOFPLASTICINJECTIONMOULDFORWARPAGESPECIMENTHISSECTIONDESCRIBESTHEDESIGNASPECTSANDOTHERCONSIDINVOLVEDINDESIGNINGTHEMOULDTOPRODUCEWARPAGESPECIMENTHEMATERIALUSEDFORPRODUCINGTHEPLASTICFIG1WARPAGETESTINGSPECIMENPRODUCEDIMUMBASEFITTEDLOSIONSHAREACTIONTHERESPECTIONSPACEWITHTHEREFORE,TMOULDCOMPONENTSTCACORESIDEEJECTOREJECTORBOTTOMTECHNOLOGY1712006259–267MOULDFORWARPAGETESTINGSPECIMENWASAISI1050STEELFOURDESIGNCONCEPTSHADBEENCONSIDEREDINDESIGNINGOFMOULDINCLUDINGITHREEPLATEMOULDCONCEPT1HAVINGTWOPARTINGLINEWITHSINGLECAVITYNOTAPPLICABLEDUETOHIGHCOSTIITWOPLATEMOULDCONCEPT2HAVINGONEPARTINGLINEWITHSINGLECAVITYWITHOUTGATINGSYSTEMNOTAPPLICABLEDUETOLOWPRODUCTIONQUANTITYPERINJECTIONTWOPLATEMOULDCONCEPT3HAVINGONEPARTINGLINEWITHDOUBLECAVITIESWITHGATINGANDEJECTIONSYSTEMNOTAPPLICABLEASEJECTORPINSMIGHTDAMAGETHEPRODUCTASTHEPRODUCTISTOOTHINVTWOPLATEMOULDCONCEPT4HAVINGONEPARTINGLINEWITHDOUBLECAVITIESWITHGATINGSYSTEM,ONLYUSEDSPRUEPULLERACTASEJECTORTOAVOIDPRODUCTDAMAGEDURINGEJECTIONINDESIGNINGOFTHEMOULDFORTHEWARPAGETESTINGSPECTHEFOURTHDESIGNCONCEPTHADBEENAPPLIEDVARIOUSCONSIDERATIONSHADBEENAPPLIEDINTHEDESIGNFIRSTLY,THEMOULDWASDESIGNEDBASEDONTHEPLATENDIMENOFTHEPLASTICINJECTIONMACHINEUSEDBOY22DTHEREALIMITATIONOFTHEMACHINE,WHICHISTHEMAXIMUMAREAOFPLATENISGIVENBYTHEDISTANCEBETWEENTWOTIEBARSDISTANCEBETWEENTIEBARSOFTHEMACHINEIS254MMTHEMAXIMUMWIDTHOFTHEMOULDPLATESHOULDEXCEEDTHISDISTANCEFURTHERMORE,4MMSPACEHADBEENEDBETWEENTHETWOTIEBARSANDTHEMOULDFORMOULDANDHANDLINGPURPOSESTHISGIVESTHEFINALMAXWIDTHOFTHEMOULDAS250MMTHESTANDARDMOULDWITH250MM250MMISEMPLOYEDTHEMOULDBASEISTOTHEMACHINEUSINGMATEXCLAMPATTHEUPPERRIGHTANDWERLEFTCORNEROFTHEMOULDBASEORMOULDPLATENDIMENOFOTHERRELATEDMOULDPLATESARESHOWNINTABLE1THEMOULDHADBEENDESIGNEDWITHCLAMPINGPRESSUREVINGCLAMPINGFORCEHIGHERTHANTHEINTERNALCAVITYFORCEFORCETOAVOIDFLASHINGFROMHAPPENINGBASEDONTHEDIMENSIONSPROVIDEDBYSTANDARDMOULDSET,WIDTHANDTHEHEIGHTOFTHECOREPLATEARE200AND250MM,VELYTHESEDIMENSIONSENABLEDDESIGNOFTWOCAVITIESCOREPLATETOBEPLACEDHORIZONTALLYASTHEREISENOUGHWHILETHECAVITYPLATEISLEFTEMPTYANDITISONLYFIXEDSPRUEBUSHINGFORTHEPURPOSEOFFEEDINGMOLTENPLASTICSITISONLYONESTANDARDPARTINGLINEWASDESIGNEDATABLE1PLATESDIMENSIONSSIZEMM−WIDTHHEIGHTTHICKNESSOPCLAMPINGPLATE25025025VITYPLATE20025040PLATE20025040PLATE/SUPPORTPLATE3725070RETAINERPLATE12025015PLATE12025020CLAMPINGPLATE25025025PROCESSINGTHERELEASEDOPENINGISLANDONLYWFORRUNNERINGCASEMORETYPETHISTHEDIAMETERORSAMETHEAIRANDFLASHINGINORTHATOCCURRINGCAECACIENTSHOCORETHEFIG2CAVITYLAYOUTWITHAIRVENTSANDCOOLINGCHANNELSPLATETHESPRUEPULLERLOCATEDATTHECENTEROFCOREPLATENOTONLYFUNCTIONSASTHEPULLERTOHOLDTHEPRODUCTINPOSITIONWHENTHEMOULDISOPENEDBUTITALSOACTSASEJECTORTOPUSHTHEPRODUCTOUTOFTHEMOULDDURINGEJECTIONSTAGENOADDITIONALEJECTORISUSEDORLOCATEDATPRODUCTCAVITIESBECAUSETHEPRODUCTPRODUCEDISVERYTHIN,IE1MMADDITIONALEJECTORINTHEPRODUCTCAVITYAREAMIGHTCREATEHOLEANDDAMAGETOTHEPRODUCTDURINGEJECTIONFINALLY,ENOUGHTOLERANCEOFDIMENSIONSISGIVENCONSIDERATIONTOCOMPENSATEFORSHRINKAGEOFMATERIALSFIG3SHOWS3DSOLIDMODELINGASWELLASTHEWIREFRAMEMODELINGOFTHEMOULDDEVELOPEDUSINGUNIGRAPHICSSHTANGETAL/JOURNALOFMATERIALSSURFACEOFTHEPRODUCTTHEPRODUCTANDTHERUNNERWEREINAPLANETHROUGHTHEPARTINGLINEDURINGMOULDSTANDARDORSIDEGATEWASDESIGNEDFORTHISMOULDTHEGATELOCATEDBETWEENTHERUNNERANDTHEPRODUCTTHEBOTTOMOFTHEGATEWASDESIGNEDTOHAVE20◦SLANTINGANDHAS05MMTHICKNESSFOREASYDEGATINGPURPOSETHEGATEASALSODESIGNEDTOHAVE4MMWIDTHAND05MMTHICKNESSTHEENTRANCEOFMOLTENPLASTICINTHEMOULDDESIGN,THEPARABOLICCROSSSECTIONTYPEOFWASSELECTEDASITHASTHEADVANTAGEOFSIMPLERMACHININONEMOULDHALFONLY,WHICHISTHECOREPLATEINTHISHOWEVER,THISTYPEOFRUNNERHASDISADVANTAGESSUCHASHEATLOSSANDSCRAPCOMPAREDWITHCIRCULARCROSSSECTIONTHISMIGHTCAUSETHEMOLTENPLASTICTOSOLIDIFYFASTERPROBLEMWASREDUCEDBYDESIGNINGINSUCHAWAYTHATRUNNERISSHORTANDHASLARGERDIAMETER,WHICHIS6MMINITISIMPORTANTTHATTHERUNNERDESIGNEDDISTRIBUTESMATERIALMOLTENPLASTICINTOCAVITIESATTHESAMETIMEUNDERTHEPRESSUREANDWITHTHESAMETEMPERATUREDUETOTHIS,CAVITYLAYOUTHADBEENDESIGNEDINSYMMETRICALFORMANOTHERDESIGNASPECTTHATISTAKENINTOCONSIDERATIONWASVENTDESIGNTHEMATINGSURFACEBETWEENTHECOREPLATETHECAVITYPLATEHASVERYFINEFINISHINGINORDERTOPREVENTFROMTAKINGPLACEHOWEVER,THISCANCAUSEAIRTOTRAPTHECAVITYWHENTHEMOULDISCLOSEDANDCAUSESHORTSHOTINCOMPLETEPARTSUFFICIENTAIRVENTWASDESIGNEDTOENSUREAIRTRAPCANBERELEASEDTOAVOIDINCOMPLETEPARTFROMTHECOOLINGSYSTEMWASDRILLEDALONGTHELENGTHOFTHEVITIESANDWASLOCATEDHORIZONTALLYTOTHEMOULDTOALLOWVENCOOLINGTHESECOOLINGCHANNELSWEREDRILLEDONBOTHVITYANDCOREPLATESTHECOOLINGCHANNELSPROVIDEDSUFFICOOLINGOFTHEMOULDINTHECASEOFTURBULENTFLOWFIG2WSCAVITYLAYOUTWITHAIRVENTSANDCOOLINGCHANNELSONPLATEINTHISMOULDDESIGN,THEEJECTIONSYSTEMONLYCONSISTSOFEJECTORRETAINERPLATE,SPRUEPULLERANDALSOTHEEJECTOR331TESTINGRUNSHORTAIRFIG33DSOLIDMODELINGANDWIREFRAMETECHNOLOGY1712006259–267261RESULTSANDDISCUSSIONRESULTSOFPRODUCTPRODUCTIONANDMODIFICATIONFROMTHEMOULDDESIGNEDANDFABRICATED,THEWARPAGESPECIMENSPRODUCEDHAVESOMEDEFECTSDURINGTRIALTHEDEFECTSARESHORTSHOT,FLASHINGANDWARPAGETHESHOTISSUBSEQUENTLYELIMINATEDBYMILLINGOFADDITIONALVENTSATCORNERSOFTHECAVITIESTOALLOWAIRTRAPPEDTOMODELINGOFTHEMOULD262PROCESSINGESCAPEPACKINGBYINJECTIONIT
编号:201311171428326568    类型:共享资源    大小:1.25MB    格式:PDF    上传时间:2013-11-17
  
5
关 键 词:
专业文献 学术论文 精品文档 外文翻译
  人人文库网所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。
关于本文
本文标题:外文翻译注塑模具的设计及其热分析英文版.pdf
链接地址:http://www.renrendoc.com/p-96568.html

当前资源信息

4.0
 
(2人评价)
浏览:337次
淘宝运营上传于2013-11-17

官方联系方式

客服手机:17625900360   
2:不支持迅雷下载,请使用浏览器下载   
3:不支持QQ浏览器下载,请用其他浏览器   
4:下载后的文档和图纸-无水印   
5:文档经过压缩,下载后原文更清晰   

精品推荐

相关阅读

人人文库
关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服客服 - 联系我们

网站客服QQ:2846424093    人人文库上传用户QQ群:460291265   

[email protected] 2016-2018  renrendoc.com 网站版权所有   南天在线技术支持

经营许可证编号:苏ICP备12009002号-5