1、GL CoaterTraining Sea Dragon PM 4,-2005A Technological partB Technical componentsC OperationD MaintenanceE SafetyTask of GL CoaterUniform application of fluid in order to:Improve printability 改善印刷质量 Improve opacity and gloss 提高透明度和光泽度 Prevent curling and dusting 防止卷曲和除尘Pigmenting and coating0.15-42-
2、55-153.5-16 min2.Limit switch:Metering beam in standby position3.Limit switch:Metering beam in operating position4.Limit switch:Applicator roll in operating position5.Pressure switch(4-20 mA):press-on hose pressure min102030-30-20-10Start41523Stop sequence1)Stop sequence Coater 2)Cleaning3)Changing
3、of distribution deviceAutomatic stop sequence GL CoaterColor supply upper circulationColor at appl.rollDrain valve openAppl.roll in operating positionAppl.roll from crawling to operating speedMetering beam standby to operating positionPress-on hoseMetering rod drive(if applicable)Metering rod flushi
4、ng water(if applicable)Edge spray nozzlesSeconds1.Flow switch(4-20 mA):color supply min2.Limit switch:Metering beam in standby position3.Limit switch:Metering beam in operating position4.Limit switch:Applicator roll in operating position5.Pressure switch(4-20 mA):press-on hose pressure min405060Stop
5、10203045132Web break procedure1)Web break signal web cut-off ahead of Coater2)Stop coating sequence activated automatically3)CleaningPhotocellsPhotocell forpaper web detectionBeam directionof photocellSwing directionof knivesKnock-off deviceChecks during operation Check color layer on paper:Low or h
6、igh gloss?(low or high coat weight)Check color layer on paper:Equal coverage or stripes?Check application width:Set edge doctor position Check if there is sufficient return flow from metering elementChecks during operationCheck paper gloss after coaterChecks during operationAdjust edge deckle positi
7、onA Technological partB Technical componentsC OperationD MaintenanceE SafetyCleaningApplicator rollClean at crawl speed.Start cleaning sequence manually.Use a soft sponge and warm water.Color distribution pipeRemove color residues,if any.Backing rollClean at crawl speed.Activate roll shower manually
8、.Use a soft sponge and warm water.CleaningColor residues in color distribution pipeCleaningMetering rodSwitch on metering rod drive manually and clean with soft sponge.Edge doctorsRemove color residues,if any.Check for wear and replace if necessary.Color panSwivel color distribution pipe to cleaning
9、 position and clean color pan with warm water.CleaningNever use sharp objects to clean the backing roll!When to replace wear parts?Metering elements(blade,rollflex)Application quantity can not be reduced any more(blade worn out)Application fault(blade scratches,metering rod worn out)Product change,i
10、.e.change of application rateOther reasons,e.g.after every web breakWhen to replace wear parts?Damaged metering rodWorn out bladesWhen to replace wear parts?Edge doctorDoctor blade worn out.DANGER:The metal support blade must not scratch on the applicator roll surface!Edge doctor blade changeReplaci
11、ng a rollflex unitImportant items:Carry rollflex with 2-3 peopleCheck if an old metering rod can be re-usedMake records,attach a label to old rodAssembly of new rollflex unit1aligning aid2blade3metering rod bed4metering rod5wooden stripAssembly of new rollflex unitAssembly of new rollflex unitAssemb
12、ly of new rollflex unit1metering rod2quick-release coupling3driver4 drive shaftReplacing a stiff blade or bent blade1)Press coating stop“button metering beam will swivel to standby position.2)Press unclamp“button clamping hose will de-aerate3)Take out old blade and install new blade4)Press clamp“but
13、ton5)Press coating start“buttonPrepare roll change1.Swivel metering beam,applicator roll,and color distribution pipe to cleaning position.2.Switch off drives and safeguard against restarting.3.Disconnect pneumatic and hydraulic supply and lubrication.4.Dismount drive shaft coupling.Roll change 1)2)3
14、)Roll changeAdjustments after roll changeSet operating position metering beamSet operating position applicator rollSet splash guardSet sealing gap(only applicator roll change)Roll changeReplacing hydraulic cylinderPrepare cylinder change1.Stop hydraulic unit and close shutoff valves.2.Drain hydrauli
15、c cylinder.3.Suspend metering beam with lifting gear to coater section framing.4.Remove hydraulic cylinder.Replacing hydraulic cylinder1pivot pin2cover3hydraulic cylinder4 bearing pin5 bellows6 bearing arm7 metering beam8 shackle9 lifting aidReplacing hydraulic cylinder 1block and tackle2rope3pivot
16、pin4 cover5 hydraulic cylinder6 pivot pin7 color panReplacing hydraulic cylinder Adjustments after cylinder changeSwivel metering beam while de-aerating cylinder.Set operating position applicator rollSet operating position metering beamReplacing clamping and press-on hosePrepare hose change1 Press u
17、nclamp“button.2 Remove tube holder and side shields.3 Pull old hose out of groove.4 Trim new hose and grind clean.5 Use soap sud to facilitate drawing the new hose into the groove.Replacing clamping and press-on hose 1press-on hose2pressing strip3hose clip4 connection nipple5 pneumatic air connectio
18、n6 holder7 clamping screw8 side shield9 metering beam10 profiling spindlePress-on hoseReplacing clamping and press-on hose 1clamping hose2metering beam3hose clip4 connection nipple5 pneumatic air connection6 clamping screw7 side shieldClamping hoseReplacing screw jack elementsPrepare screw jack elem
19、ent change1 Remove handwheel and position indicator.2 Remove cover with holder and clamp.3 Secure screw jack element with rope.4 Remove screw jack element.Replacing screw jack elements1screw jack element2handwheel3bracket4 clampReplacing screw jack elements1screw jack element2handwheel3cover4 holder
20、 with clamp5 framingReplacing screw jack elements Adjustments after screw jack element changeSet operating position applicator rollSet operating position metering beamReplacing metering beam angle adjusting device Prepare change1 Stop hydraulic unit and close shutoff valves.2 Suspend metering beam w
21、ith lifting gear to coater section framing.3 Remove servomotor with angle encoder.4 Secure screw jack element with ropes and remove.Replacing metering beam angle adjusting device 1cross member2pivot pin3guard4 screw jack element5 cover6 pivot pin7 metering beam8 front blade9 shackle10 pull-lift hois
22、tReplacing metering beam angle adjusting device1intermediate flange2gear cam limit switch3screw jack element4 servomotor5 guard6 angle encoder7 motor flangeReplacing metering beam angle adjusting deviceAdjustments after changeSet metering beam 30 position.Set metering beam min angle(15)and max angle
23、(55).Contact Voith Paper!A Technological partB Technical componentsC OperationD MaintenanceE SafetySafety instructions for operation Do not reach into swivel range Do not touch rotating or moving parts Remove paper scrap only with suitable device If movement has not taken place,do not initiate by hand Read safety regulations operation manual chapter 21safety railings2guard plateSpecific hazards
