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外文翻译单浇口优化注塑模英文版.pdf

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外文翻译单浇口优化注塑模英文版.pdf

JOURNALOFZHEJIANGUNIVERSITYSCIENCEAISSN1673565XPRINT;ISSN18621775ONLINEWWWZJUEDUCN/JZUS;WWWSPRINGERLINK.COMEMAILJZUSZJUEDUCALFEFAL/JZHEJIANGUNIVSCIA20078710771083SINGLEGATEOPTIMIZATIONFORPLASTICINJECTIONMOLDLIJIQUAN十,LIDEQUN,GUOZHIYING,LVHAIYUANDEPARTMENTOFPLASTICITYTECHNOLOGY,SHANGHAIJIAOTONGUNIVERSITY,SHANGHAI200030,CHINAEMAILHUTLI163.CORNRECEIVEDNOV.22,2006;REVISIONACCEPTEDMAR.19,20071077ABSTRACTTHISPAPERDEALSWITHAMETHODOLOGYFORSINGLEGATELOCATIONOPTIMIZATIONFORPLASTICINJECTIONMOLD.THEOBJECTIVEOFTHEGATEOPTIMIZATIONISTOMINIMIZETHEWARPAGEOFINJECTIONMOLDEDPARTS,BECAUSEWARPAGEISACRUCIALQUALITYISSUEFORMOSTINJECTIONMOLDEDPARTSWHILEITISINFLUENCEDGREATLYBYTHEGATELOCATION.FEATUREWARPAGEISDEFINEDASTHERATIOOFMAXIMUMDISPLACEMENTONTHEFEATURESURFACETOTHEPROJECTEDLENGTHOFTHEFEATURESURFACETODESCRIBEPARTWARPAGE.THEOPTIMIZATIONISCOMBINEDWITHTHENUMERICALSIMULATIONTECHNOLOGYTOFINDTHEOPTIMALGATELOCATION,INWHICHTHESIMULATEDANNEALINGALGORITHMISUSEDTOSEARCHFORTHEOPTIMUM.FINALLY,ANEXAMPLEISDISCUSSEDINTHEPAPERANDITCANBECONCLUDEDTHATTHEPROPOSEDMETHODISEFFECTIVEKEYWORDSINJECTIONMOLD,GATELOCATION,OPTIMIZATION,FEATUREWARPAGEDOI10.1631/JZUS.2007.A1077DOCUMENTCODEACLCNUMBERTQ320.66INTRODUCTIONPLASTICINJECTIONMOLDINGISAWIDELYUSED.COMPLEXBUTHIGHLYEFFICIENTTECHNIQUEFORPRODUCINGALARGEVARIETYOFPLASTICPRODUCTS,PARTICULARLYTHOSEWITHHIGHPRODUCTIONREQUIREMENT,TIGHTTOLERANCE,ANDCOMPLEXSHAPES.THEQUALITYOFINJECTIONMOLDEDPARTSISAFUNCTIONOFPLASTICMATERIAL,PARTGEOMETRY,MOLDSTRUCTUREANDPROCESSCONDITIONS.THEMOSTIMPORTANTPARTOFANINJECTIONMOLDBASICALLYISTHEFOLLOWINGTHREESETSOFCOMPONENTSCAVITIES,GATESANDRUNNERS,ANDCOOLINGSYSTEM.LAMANDSEOW2000ANDJINANDLAIN2002ACHIEVEDCAVITYBALANCINGBYVARYINGTHEWALLTHICKNESSOFTHEPART.ABALANCEFILLINGPROCESSWITHINTHECAVITYGIVESANEVENLYDISTRIBUTEDPRESSUREANDTEMPERATUREWHICHCANDRASTICALLYREDUCETHEWARPAGEOFTHEPART.BUTTHECAVITYBALANCINGISONLYONEOFTHEIMPORTANTINFLUENCINGFACTORSOFPARTQUALITIES.ESPECIALLY。THEPARTHASITSFUNCTIONALREQUIREMENTS.ANDITSTHICKNESSESSHOULDNOTBEVARIEDUSUALLY.PROJECTNO.50675080SUPPORTEDBYTHENATIONALNATURALSCIENCEFOUNDATIONOFCHINAFROMTHEPOINTVIEWOFTHEINJECTIONMOLDDESIGN,AGATEISCHARACTERIZEDBYITSSIZEANDLOCATION.ANDTHERUNNERSYSTEMBYTHESIZEANDLAYOUT.THEGATESIZEANDRUILLLERLAYOUTAREUSUALLYDETERMINEDASCONSTANTS.RELATIVELY,GATELOCATIONSANDRUNNERSIZESAREMOREFLEXIBLEWHICHCANBEVARIEDTOINFLUENCETHEQUALITYOFTHEPART.ASARESULT,THEYAREOFTENTHEDESIGNPARAMETERSFOROPTIMIZATION.LEEANDKIMRL996AOPTIMIZEDTHESIZESOFRUNNERSANDGATESTOBALANCERUNNERSYSTEMFORMULTIPLEINJECTIONCAVITIES.THERUNNERBALANCINGWASDESCRIBEDASTHEDIFFERENCESOFENTRANCEPRESSURESFORAMULTICAVITYMOLDWITHIDENTICALCAVITIES.ANDASDIFFERENCESOFPRESSURESATTHEENDOFTHEMELTFLOWPATHINEACHCAVITYFORAFAMILYMOLDWIMDIFFERENTCAVITYVOLUMESANDGEOMETRIES.THEMETHODOLOGYHASSHOWNUNIFORMPRESSUREDISTRIBUTIONSAMONGTHECAVITIESDURINGTHEENTIREMOLDINGCYCLEOFMULTIPLECAVITIESMOLD.ZHAIETA1.2005A1PRESENTEDTHETWOGATELOCATIONOPTIMIZATIONOFONEMOLDINGCAVITYBYANEF前一CIENTSEARCHMETHODBASEDONPRESSUREGRADIENTPGSS,ANDSUBSEQUENTLYPOSITIONEDWELDLINESTOTHEDESIREDLOCATIONSBYVARYINGRUNNERSIZESFOR维普资讯HTTP//WWWCQVIPCOM1078L,EA1./DZHEJIANGUNIVSCIA20078710771083MULTIGATEPARTSZHAIETA1.,2006.ASLARGEVOLUMEPART,MULTIPLEGATESARENEEDEDTOSHORTENTHEMAXI.MUMFLOWPATH,WITHACORRESPONDINGDECREASEININJECTIONPRESSURE.THEMETHODISPROMISINGFORDE.SIGNOFGATESANDRUNNERSFORASINGLECAVITYWICHMULTIPLEGATES.MANYOFINJECTIONMOLDEDPARTSAREPRODUCEDWITHONEGATE.WHETHERINSINGLECAVITYMOLDORINMULTIPLECAVITIESMOLD.THEREFORE.THEGATELOCATIONOFASINGLEGATEISTHEMOSTCOMMONDESIGNPARAMETERFOROPTIMIZATION.ASHAPEANALYSISAPPROACHWASPRESENTEDBYCOHRBEBAISSEANDGARCIA2002,BYWHICHTHEBESTGATELOCATIONOFINIECTIONMOLDINGWASESTI.MATED.SUBSEQUENTLY,THEYDEVELOPEDTHISMETHODO1.OGYFURTHERANDAPPLIEDITTOSINGLEGATELOCATIONOPTIMIZATIONOFANLSHAPEEXAMPLECOURBEBAISSE,2005.ITISEASYTOUSEANDNOTTIME.CONSUMING.WHILEITONLYSERVESTHETURNINGOFSIMPLEFLATPARTSWICHUNIFORII1THICKNESS.PANDELIDISANDZOUR1990PRESENTEDTHEOPTI.MIZATIONOFGATELOCATION.BYINDIRECTQUALITYMEASURESRELEVANTTOWARPAGEANDMATERIALDEGRADATION.WHICHISREPRESENTEDASWEIGHTEDSUMOFATEMPERATUREDIFFERENTIALTERM.ANOVER.PACKTERM.ANDAFRICTIONALOVERHEATINGTERM.WARPAGEISINFLUENCEDBYTHEABOVEFACTORS.BUTTHERELATIONSHIPBETWEENTHEMISNOTCLEAR.THEREFORE,THEOPTIMIZATIONEFFECTISRESTRICTEDBYTHEDETERMINATIONOFTHEWEIGHTINGFACTORS.LEEANDKIMRL996BDEVELOPEDANAUTOMATEDSELECTIONMETHODOFGATELOCATION,INWHICHASETOFINITIALGATELOCATIONSWEREPROPOSEDBYADESIGNERANDTHENTHEOPTIMALGATEWASLOCATEDBYTHEAACENTNODEEVALUATIONMETHOD.THECONCLUSIONTOAGREATEXTENTDEPENDSMUCHONTHEHUMANDESIGNER’SINTUITION.BECAUSETHEFIRSTSTEPOFTHEMETHODISBASEDONTHEDESIGNER’SPROPOSITION.SOTHERESULTISTOALARGEEX.TENTLIMITEDTOTHEDESIGNER’SEXPERIENCE.LAMANDJIN200L、DEVELOPEDAGATELOCATIONOPTIMIZATIONMETHODBASEDONTHEMINIMIZATIONOFTHESTANDARDDEVIATIONOFFLOWPATHLENGTHSDLANDSTANDARDDEVIATIONOFFILLINGTIMESDTDURINGTHEMOLDINGFILLINGPROCESS.SUBSEQUENTLY,SHENET口,.004A;2004BOPTIMIZEDTHEGATELOCATIONDESIGNBYMINIMIZINGTHEWEIGHTEDSUMOFFILLINGPRESSURE,FILLINGTIMEDIFFERENCEBETWEENDIFFERENTFLOWPATHS,TEMPERATUREDIFFERENCE,ANDOVERPACKP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