模具注射成型毕业论文中英文对照资料外文翻译文献.doc

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1、外文翻译模具注射成型中英文对照资料外文翻译文献InjectionMoldingThebasicconceptofinjectionmoldingrevolvesaroundtheabilityofathermoplasticmaterialtobesoftenedbyheatandtohardenwhencooled.Inmostoperations,granularmaterial(theplasticresin)isfedintooneendofthecylinder(usuallythroughafe

2、edingdeviceknownasahopper),heated,andsoftened(plasticizedorplasticated),forcedouttheotherendofthecylinder,whileitisstillintheformofamelt,throughanozzleintoarelativelycoolmoldheldclosedunderpressure.Here,themeltcoolsandhardensuntilfullyset-up.Themoldistheno

3、pened,thepieceejected,andthesequencerepeated.Thus,thesignificantelementsofaninjectionmoldingmachinebecome:1)thewayinwhichthemeltisplasticized(softened)andforcedintothemold(calledtheinjectionunit);2)thesystemforopeningthemoldandclosingitunderpressure(called

4、theclampingunit);3)thetypeofmoldused;4)themachinecontrols.外文翻译Thepartofaninjection-moldingmachine,whichconvertsaplasticmaterialfromasoldphasetohomogeneousseni-liguidphasebyraisingitstemperature.Thisunitmaintainsthematerialatapresenttemperatureandforceitthr

5、oughtheinjectionunitnozzleintoamold.Theplungerisacombinationoftheinjectionandplasticizingdeviceinwhichaheatingchamberismountedbetweentheplungerandmold.Thischamberheatstheplasticmaterialbyconduction.Theplunger,oneachstorke;pushesunmeltedplasticmaterialintot

6、hechamber,whichinturnforcesplasticmeltatthefrontofthechamberoutthroughthenozzleThepartofaninjectionmoldingmachineinwhichthemoldismounted,andwhichprovidesthemotionandforcetoopenandclosethemoldandtoholdthemoldclosewithforceduringinjection.Thisunitcanalsoprov

7、ideotherfeaturesnecessaryfortheeffectivefunctioningofthemoldingoperation.Movingplateisthememberoftheclampingunit,whichismovedtowardastationarymember.themovingsectionofthemoldisboltedtothismovingplate.Thismemberusuallyincludestheejectorholesandmoldmountingp

8、atternofblotholesor“T”slots.Stationaryplateisthefixedmemberoftheclampingunitonwhichthestationarysectionofthemoldisbolted.This外文翻译memberusuallyincludesamold-mountingpatternofbolesor“T”slots.Tierodsarememberoft