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第1页共6页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共6页Thistrialversioncanuseonlyapartofitem.FunctionofMajorPartsYouwilllearnaboutthenamesandfunctionsofmajorpartsusedforanejectionsystem.Apushbackpinandacoilspringareusedforregularmolds,whereasapushbackpinandagasspringaresometimesusedforlargesizemolds.Thisfigureillustratesanexampleofalargemold.EjectorStopper(StrokeEndPin)Ablockthatstopsanejectorplatefromgoingforward[stoppin]第2页共6页第1页共6页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共6页SprueLockPinsApinhastheedgeofwhichisundercuttopullapartinmoldopeningandremoveaspruefromaspruebush.Aftermoldopening,thispinwillfunctionasanejectorpinandejectsthespruefromaapruebush.Alsoitreleasesgascontainedinmoltenplastic.EjectorPlateAlsocalledapushplate.Aplatethatsupportsanedgeofanejectorpinorapushbackpintoejectapartfromamold.Itisejectedbyanejectordeviceofamoldingmachine,andreturnedtotheoriginalpositionwhentheedgeofapushbackpincollideswithacavityplateduringmoldclamping.第3页共6页第2页共6页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第3页共6页StopPinsAstopperinstalledtokeepanejectorplatehorizontalorpreventtheejectorplatefromretreatingtoofaranddamagingacoreadaptorplate.第4页共6页第3页共6页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第4页共6页EjectorGuidePins/EjectorGuideBushAnejectorguidepinisalsocalledapushplateguidepinandfunctionsasaguideforslidingofanejectorplate.Becauseanejectorguidebushslides,ahardmaterialisused.Anejectorguidebushisalsocalledapushplateguidebush.Itisacylindricalpartusedtodeterminethepositionbymatchingtheejectorguidepin.PushRodsAshaftlinkedtotheforce(hydraulicormechanical)ofthemoldingmachineinordertogettheejectorplatetowork.第5页共6页第4页共6页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第5页共6页GasSpring/GasSpringHolderAgasspringforciblypushesbackanejectorplate.Thestrengthofthespringisadjustedbyadjustingthefillingpressure.Whenusingagasspring,makesuretoavoidhightemperature(heatmayexpandgas,deterioratingtheoriginalfunctionsofagasspring).CalculatingFillingPressureTofigureoutfillingpressure(P)fromearlyload(Wo):P=100*Wo/C(C:constant)Tofigureoutcorrespondingspringconstant(K)fromfillingpressure(P)andgasspringconstant(G):K=G*P/100Tofigureoutforcebydisplacement(x)fromthetopD.C.ofthepistonrod(W):W=P(Gx+C)*Seethecatalogofeachmanufacturerforconstant(C)andgasspring第6页共6页第5页共6页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第6页共6页constant(G).Agasspringholderisablockusedtofixagasspringtoanejectorplate.Counterboreprocessforaboltinstallationhole,foritalsofunctionsasanpushrod.