Barco SliverWatch Specifications - page 3
Mostdrawframeshavecontactrollersinstalledinthecreelasstopmo-
tion.Theproblemswiththeserollersareknowntotheindustry.
OncetheS
liver
W
atch
sensorisinstalled,asliverbreakagewillbedetected
andthedrawframewillbestopped.Anotherstopmotionisnolonger
required.
Sliver breakage stop motion
Onlappersupto24sensorscanbeinstalledinthecreeltomonitorsliver.
Incaseacontaminantisdetectedthelapperisstopped.
Aspecialcommunicationlogicavoidstheuseoflongsensorcabling,
whichresultsinaneasy,fastandreliableS
liver
W
atch
installationonthe
machine.
SliverWatch on lappers
Heatheryarns(blendsofcottonwith1%,3%,5%ormoreblackpoly-
ester)canbemonitoredbyS
liver
W
atch
.
Not enough black or too much black polyester in the sliver, makes
S
liver
W
atch
stopthedrawframe.
AsthepositionofthePE/COblendcansversusthepurecottoncansin
thecreelisimportant,S
liver
W
atch
willstopthemachineifacanposition
isnotrespectedbytheoperator.
SliverWatch on heather yarns
Productiondata,suchasmachineefficiency,producedkg,producedsliver
length,numberofcanchanges,numberofproductionstopsaswellas
qualitystopsareavailableinrealtimeandonshiftbase.
Statisticevaluation:histogramofdefects,numberofcontaminantsper
shift,numberofsliverbreaks,etc.
Production and quality data
TheinstallationofaS
liver
W
atch
oncardsallowsthemilltokeeptrackof
thelevelofcontaminationintheproduction.
Thepurposehereistomonitorthecontaminationindexofthesliver
can.
Thecontaminationindexofthecanisanexpressionwhichrelatestothe
numberofcontaminantsper1000metersofsliver.
Monitoring on cards