中英文文献翻译注塑成型机.docx
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中英文文献翻译注塑成型机.docx
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中英文文献翻译注塑成型机
英文原文
Injectionmoldingmachine
Injectionmoldingmachineisplasticmachineforshort.Itusesthethermalphysicalpropertiesofplastics,thematerialfromthehopperintothebarrel,isbarreledbyheatingcoilheat,sothematerialwillbemelted,whichisarrangedbytheexternalforceundertheactionofthemotordrivingtherotationofthescrewinthebarrel.Thematerialinthescrewundertheactionofthescrewgroove,alongtheforwarddeliveryandcompaction,dualrolethematerialintheheatingandshearundergraduallyplasticizing,meltedandhomogenized,whenthescrewrotates,thematerialinthescrewchannelfrictionandshearforce,themoltenmaterialispushedtothescrewhead.Atthesametime,thescrewwithbackwardinthematerial,thescrewheadformingmaterialstoragespace,completingtheplasticizingprocess,then,screwintheinjectioncylinderpistonthrustundertheactionofhighspeed,highpressure,inthematerialstoragechamber,themeltthroughthenozzletothemoldcavityinjection,cavitymeltafterpressing,cooling,solidification,moldinthemoldclosingmechanismofactionnext,openmold,andthroughtheejectiondevicetofinalizethedesigngoodproductsfallfromthetopdie.
Configurationaccordingtotheclampingmemberandtheinjectioncomponenttypehashorizontal,vertical,angletypethree
(1)Horizontalinjectionmoldingmachine:
horizontalinjectionmoldingmachineisthemostcommontype.Itscharacteristicisthecenterlineinjectionassemblyandclampingassemblycenterlineofconcentricorconsistent,alsowiththeparalleltothemountingsurface.Ithastheadvantagesoflowcenterofgravity,steadywork,moldinstallation,operationandrepair,whichareconvenient,themoldopeningbig,smalloccupiedspaceheight;butcoversanareaoflarge.
(2)Verticalinjectionmoldingmachine:
itscharacteristicisclampingdeviceandinjectiondeviceoftheaxislinearrangementandperpendiculartotheground.Italsohastheadvantagesofsmalloccupiedarea,convenientassemblyanddisassemblyofinsertmold,easyinstallation,sincethebucketintothematerialplasticizationisevenly,easytorealizeautomationandmachineautomationlinemanagement.Thedisadvantageofitisthetopproductisnoteasytofalloffautomatically,itoftenneedsmanualorothermethodtotakeout,andisnoteasytorealizefullautomaticoperationandlargeproductsinjection;machineheight,feeding,inconvenientrepair.
(3)Angletypeinjectionmoldingmachine:
injectiondeviceandamoldingdeviceaxisarearrangedvertically.Accordingtotheinjectionassemblycenterlinesarevertical,horizontalandrelativepositionoftheverticalandhorizontalinstallation,recumbentpoints:
①horizontalvertical,injectionassemblylineandplaneparallel,andmoldassemblycenterlineandthebaseofverticalandhorizontal,vertical;injectionassemblycenterlineandthesurfacevertical,anddieassemblycenterlineandthereferencesurface.Theadvantagesofangletypeinjectionmachinehastheadvantagesofbothhorizontalandverticalinjectionmoldingmachine,specialapplytothemoldopeningsidegateasymmetricgeometryproducts.
Atpresent,theinjectiondevicearecommoncylinderformanddoublecylinderform,Iplanttheinjectionmoldingmachineisdoublecylinderform,andisdirectlydrivenbyahydraulicmotorofscrewininjectionmolding.Becauseofdifferentmanufacturers,differenttypesofmachinecomponentsarenotthesame;thefollowingwillmakeaconcreteanalysisofourfactorywithmachine.
Theworkingprincipleis:
theplastic,screwinplasticpartsinthedrivethemainshafttorotatethroughthehydraulicmotor,spindleendisconnectedwiththescrew,andtheotherendofthehydraulicmotorkeyconnection,screwrotation,plasticityandmeltclassifiedpushedtothestoragechambercylinderfront,atthesametime,screwbackinthereactionmaterial,andthroughthethrustbearingthethrustseatback,pullingthepistonrodthroughthenutstraightback.Tocompletethemeasurement,injection,theinjectioncylinderrodchamberoilinletthroughthebearingtopushthepistonrodtocompletetheaction,therodchamberpistonoilinlettopushthepistonrodandscrewandfinishtheinjection.
Theworkprincipleofscrewplasticizingcomponents:
performs,screwrotation,fromthematerialinletintothescrewgroovematerialadvancingcontinuouslyforward,heatingringthroughthebarrelwalloftheheattransfertothespiralgroovematerial,solidmaterialinthedualroleofexternalheatingandscrewrotationalshear,andthroughthethermalprocessfunctionalsectionofscrew,achievingtheplasticizingandmelting,meltingawaythecheckringaroundthescrewhead,frontendthroughthechannelintothescrew,andgeneratesbackpressure,pushthescrewaftertheshiftmeasurementcompletemelt,atthetimeofinjectionscrewup,pistoneffect,withrapidadvancement,inthecylinder,willmeltreservoirmaterialinthechamberthroughthenozzleintothemold.
Screwplasticizingcomponentsgenerallyhavethefollowingcharacteristics:
Thescrewhastwofunctionsofplasticizingandinjection;
Thescrewinplastic,onlyfortheplastic
Theplasticsinplasticizingprocess,thermalprocessthroughthanextrusion;
Thescrewontheplasticizingandinjectionweretooccur,axialdisplacement,andscrewinworkingstateofintermittentwhentostop,thusforminganon-stabilityofscrewplasticizingprocess.
(1)Screw
Screwisakeycomponentofplasticparts,directcontactwithplastic,plasticthroughtheeffectivelengthofthescrewchannel,aftertheheatforalongtime,mustgothrough3states(glass,behavior,viscousstate)transformation,geometricparameters,geometry,lengthoffunctionalsectionofscrewwilldirectlyaffectthetransmissionefficiencyandtheplasticizingqualityofplastic,willultimatelyaffectthequalityofinjectionmoldingcycleandproduct.
Comparedwiththeextrusionscrew,plasticscrewhasthefollowingcharacteristics:
Theinjectionscrewlength-diameterratioandcompressionratioissmall;
Screwgrooveofinjectionscrewissectionofthedeep;
Theinjectionscrewsfeedingsectionsislonger,andareshort;
Theinjectionscrewwork,plasticizingcapacityandmelttemperaturewillvarywiththeaxialdisplacementscrewandchange.
(I)classification,screw
Injectionscrewaccordingtotheplasticadaptability,canbedividedintogeneralandspecialscrew,generalalsocalledconventionalscrew,canbeprocessedwithlowviscosity,mostofthethermoplastic,civilplasticcrystallineandamorphousandengineeringplastics,isthemostbasicformofthescrew,andthecorrespondingandspecialscrew,isusedtoprocesswithordinaryscrewprocessinghardplastic;accordingtothescrewstructureandgeometrycharacteristics,canbedividedintoconventionalscrewandscrew,theconventionalscrewisalsoknownasthethreesectionscrew,isthebasicformofthescrew,screwformhasmanykinds,suchasseparationscrew,screw,wavyshuntscrew,nometeringsectionofscrew.
Theconventionalscrewthreadeffectivelengthisusuallydividedintofeedingsections(conveying),thecompressionsection(Plasticssegment),andmeteringsection(averagingperiod),accordingtotheplasticpropertiesofdifferent,canbedividedintogradual,mutationtypeandgeneraltypescrew.
Thetaperedscrew:
compressionlong,plasticizingenergytransferforPVCrelaxation,poorthermalstabilityofplastic.
Themutantcompressionscrew:
short,plasticizingenergyconversionismoreacuteness,usedforpolyolefin,PAcrystallineplastics.
Thegeneralpurposescrew:
adaptabilityisstrong,andcanbesuitableforprocessingavarietyofplastic,avoidfrequentreplacementofthescrew,increaseproductionefficiency.
DSscrewdiameter,screwdiameterdirectlyaffecttheplasticizingcapacity,willdirectlyaffecttheinjectionvolume,therefore,injectionvolumeofinjectionmoldingmachinethescrewdiameterislarge.
L/ds-screwlengthtodiameterratio.Listheeffectivelengthofscrewthreadpartofthescrew,theratiooflengthtodiameterislarger,thelengthofthatthread,directlyaffectthethermalprocessofmaterialinthescrew,theabilitytoinfluencetheabsorptionofenergy,whiletheenergysourcehastwoparts:
onepartistheexternalheatingcoiltothebarrel,andanotherpartisfrictionthermalandshearheatgeneratedbytherotationofthescrew,theexternalmechanicalenergyconversion,therefore,L/dsdirectlyaffectthemeltingeffectofmaterialandmelt,butifL/dsistoolarge,thetransmissiontorqueincrease,increasedenergyconsumption.
L1-feedinglength.Thefeedingsectionisalsocalledconveyingorfeedsection,inordertoimprovethetransportcapacity,screwgroovesurfacemustbesmooth,thelengthoftheL1shallensurethatthematerialconveyinglengthtooshortenough,becauseL1willleadtoprematuremeltingmaterial,thusitisdifficulttoguaranteethetransportationconditionsofstabilizingpressure,willbedifficulttoensurethescrewlater.Plasticundertheirowngravityfromthehoppertoslipintothescrew,screwrotation,thethrustsurfacefrictioninthebarrelandscrewgrooveundertheactionofthematerialiscompressedintoasolid,nutintensive,therelativemotionalongthedirectionofthethread,thissection,plasticsolidstate,namelytheglassstate.
ThedepthofscrewchannelH1-feedsection.H1deep,isreceivingmaterials,improvingthefeedingquantityandplasticizingcapacity,butwillaffecttheshearstrengthofmaterialplasticizationandscrewroot,generalH1≈(0.12~0.16)ds.
L3-meltinglength.Meltingsectioncalledhomogeneoussectionor
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