ENGEL注塑机资料课件.ppt

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1、HydraulicversionHV0HV0isaneconomicalhydraulicversion,withonlyonepressuretransducerfortheinjectionpressure,whichisalsousedforthedeterminationofthepumppressureandasclampingforcetransducerduringtheclampingforcebuild-up.HV0hydraulicsProportionalpressurevalve(K)Pr

2、essurebalancePumpplantProportionalthrottlevalve(Y)SafetyvalveQ/PhydraulicsAdjustablecontrolvalveProportionalthrottlevalveCartridgeProportionalpressurereliefvalveTotheconsumerControlpumpFlowcontrolvalveThroughputclosedloopcontrolControlvalveStr.ringGuideshoePr

3、es.sideLeakageoilconnectionAdjustingpiston1CylinderstarSuctionsidePistonAdjustingpiston2Max.conveyingrateRadialpistonpumpControlvalveStrokeringGuideshoepres.sideLeakageoilconnectionAdjustingpiston1CylinderstarSuctionsidePistonAdjustingpiston2ZerothroughputRad

4、ialpistonpumpTheclampingforcebuild-upismonitoredwiththeinjectionpressuretransducer.Duetothepositionoftheinjectionpressuretransducerthepressureactualvaluemeasuredduringtheclampingforcebuild-upisstillcorrectedinordertogetthepressureexistingindeedintheclampingfo

5、rcecylinder.Onthescreenpage„Moldclosing“insteadoftheclampingforceonlyascreenflagfor„Clampingforcebuiltup“isdisplayedasthisvaluecanonlybemeasuredduringtheclampingforcebuild-up,inallotherstatesofthemachinethepressuretransducerdoesnotmakeastatementaboutthepressu

6、reintheclampingcylinder.ClampingunitAtHV0hydraulicsduringinjectionalsothesolenoidS3a/S12a(differentialsolenoidclampingunit)becomesactive.Powerfactor:AttheHV0hydraulicsapowerfactorisusedinordertolimittheproductfrompumppressureandpumppowertothemaximummotorpower

7、.Thisisnecessaryinordernottooverloadthemotor.Thepowerfactorisgiveninthehydraulicdatasheetasmm/s*barandisvalidfortheoperationwithincreasedinjectionpressureandalreadyincludesanallowedmotoroverload.Fortheoperationwithoutincreasedinjectionpressurethisvalueisconve

8、rtedinthecontrolunitautomatically.Whentheproductofspeedandpressureexceedsthepowerfactor,thespeedislimitedinsuchawaythatthetaken-offpumppowerdoesnotexceedthelimitdefinedbythepowerfactor.In