Mitsubishi Electric LX2-630-M1 User manual

Category
Sewing machines
Type
User manual
A180E098P03
SINGLE-NEEDLE LOCKSTITCH BASTING
AUTOMATIC UNDERTRIMMER
INDUSTRIAL SEWING MACHINE
INSTRUCTION MANUAL
LX2-630-M1
MODEL
PRECAUTION BEFORE STARTING OPERATION
1 Safety Precautions
1. Whenturningthepoweron,keepyourhandsandngersawayfromtheareaaround/
undertheneedleandtheareaaroundthepulley.
2 . Thepowermustbeturnedo󰮏whenthemachineisnotused,orwhentheoperator
leaveshis/herseat.
3 . Thepowermustbeturnedo󰮏beforetiltingthemachinehead,installingorremoving
the“V”belt,adjustingthemachine,orreplacingparts.
4 . Avoidplacingngers,hairs,obstacles,etc.nearthepulley,“V”belt,bobbinwinder
wheel,ormotorwhenthemachineisinoperation.Injurycouldresult.
5 . Don’tputngersintothethreadtake-uplevercover,around/undertheneedle,or
pulleywhenthemachineisinoperation.
6 . Ifthebeltcover,thengerguard,and/ortheeyeguardareinstalled,don’toperate
themachinewithoutthesesafetydevices.
2 Precaution before Starting Operation
1. Ifthemachine’soilpanhasanoilsump,neveroperatethemachinewithoutllingoil
init.
2 . Ifthemachineislubricatedbyadropoiler,neveroperatethemachinewithout
lubricating.
3. Whenanewsewingmachineisoperated,verifytherotationaldirectionofthepulley
withthepoweron.
 (Thepulleyshouldrotatecounterclockwisewhenviewedfromthepulley.)
4 . Verifyvoltageand(singleorthree)phaseindicatedonthenameplateofthemotor.
3 Precaution for Operating Conditions
1. Avoidusingthemachineatabnormallyhightemperature(35℃orhigher)orlow
temperature(5℃orlower).Otherwise,machinefailuremayresult.
2 . Avoidusingthemachineindustyconditions.
3 . Avoidusingthemachineinconditionslledwithalotofelectricnoisessuchashigh-
frequencywelders.
INTRODUCTION
 ThankyouverymuchforpurchasingMitsubishiindustrialsewingmachine.
 Pleasereadthisinstructionmanualbeforeoperatingthesewingmachine.Pleasereadalso
“SafetyManual”,“InstructionmanualforMitsubishiLimiservoX”andoperatethesewing
machinecorrectlyandsafely.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
CONTENTS
PREPARATION FOR OPERATION ……………………………………………… 1
1Adjustmentoftheneedlestoppingposition……………………………………… 1
USAGE PRECAUTION ……………………………………………… 2
1Lubrication(1)………………………………………………………………………… 2
2Lubrication(2)………………………………………………………………………… 2
3Adjustmentoflubricationtotherotatinghook ………………………………… 2
4Cleaningofmotor …………………………………………………………………… 3
5Installationofthebeltcover ……………………………………………………… 3
6Precautiononoperation …………………………………………………………… 3
HOW TO USE ……………………………………………… 4
1Installationoftheneedle …………………………………………………………… 4
2Windingofthebobbinthread……………………………………………………… 4
3Threadingoftheneedlethread…………………………………………………… 4
4Settingofthebobbin………………………………………………………………… 5
5Leadingoutthebobbinthread …………………………………………………… 5
6Adjustmentofthebobbinthreadtension………………………………………… 5
7Balanceofthreadstension ………………………………………………………… 5
8Adjustmentoftheneedlethreadtension………………………………………… 6
9Adjustmentofthethreadtensionreleasing……………………………………… 6
<Adjustmentofthepresserfootpressure………………………………………… 7
AAdjustmentofworkingheightofthepresserfoot……………………………… 7
BTimingbetweentherotatinghookmotionandtheneedlemotion…………… 8
C
Relationshipbetweentherotatinghookmotionandthethreadtake-uplevermotion
… 9
DRelationshipbetweentherotatinghookmotionandtheopenermotion …… 9
EInstallationofthemovableknife…………………………………………………… 10
FAdjustmentofthethreadtrimmercam ………………………………………… 11
G
Adjustmentofmeshingpressurebetweenthemovableknifeandthexedknife
… 12
HSharpeningofthexedknife ……………………………………………………… 12
SPECIFICATIONS ……………………………………………… 13
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
1 Adjustment of the needle
stopping position
Theneedlestoppingpositionshouldbeadjusted
withthedetectorinstalledonthemachinehead,
butthesewingmachineconnectordisconnected
fromthecontrolboxandthecoverofthedetector
removed,asfollows.
1 . Adjustment of “UP” position
Turnthepulleyandstopitattheposition
wheretheneedlecomestothehighest.(Atthis
time,thewhitemarkpointonthepulleymeets
theblackmarkpointonthearm.)
Loosenthetwosetscrewsonthedetectorjoint.
Turnthedetectorjointwhilexingthepulley,
andadjusttheUPpositiondetectordisc(black)
totheprescribedstopposition.
Tightenthetwosetscrewsonthedetectorjoint.
2 . Adjustment of “DOWN” position
Turnthepulleyandstopitatthepositionwheretheneedlecomestothelowest.Atthistime,check
thattheDOWNpositiondetectordisc(red)locatedintheprescribedstopposition.
Ifnot,turnonlytheDOWNpositiondetectordisc(red),andadjustthestopposition.
Afteradjusting,reinstallthecoverofthedetector,andconnectthesewingmachineconnectorasbefore.
PREPARATION FOR OPERATION
1
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
2 Lubrication (2)
Whenanewsewingmachineisusedforthe
rsttime,orsewingmachineleftoutofusefor
considerablylongtimeisusedagain,replenisha
suitableamountofoiltotheportionsindicatedby
arrowsinthegure.
●Oilingamount
◎→ 3,4drops
○→ 1,2drops
3 Adjustment of lubrication to the
rotating hook
1 Lubrication (1)
Filltheoilreservoirwithoilupto“H”mark.
Oillevelshouldbeperiodicallychecked.Ifoillevel
isfoundbelow“L”levelreplenishoilto“H”level.
Foroil,use“MC70M”speciedbyMitsubishi.
※Refer
MC70M:Specicgravity(15℃ )=0.86(g/cm3)
:Viscosity(40℃ )=10.9(mm2/s)
USAGE PRECAUTION
2
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
4 Cleaning of motor
Removedustfromthemotorltereveryoneortwomonths.(Continuedoperationwiththelter
cloggedwithlintordustmayoverheatthemotor.)
5 Installation of the belt cover
1 . Installthebeltcoveronthemachinesideforsafety.Refertotheprovidedinstructiondocument
containedinthesamepackage.
2 . Installthebeltcoveronthemotorsideforsafety.
6 Precaution on operation
( 1 ) Whenthepoweristurnedonoro󰮏,keepfootawayfromthepedal.
( 2 ) Itshouldbenotedthatthebrakemaynotworkwhenthepowerisinterruptedorpowerfailure
occursduringsewingmachineoperation.
( 3 ) Sincedustinthecontrolboxmightcausemalfunctionorcontroltroubles,besuretokeepthe
controlboxcovercloseduringoperation.
( 4 ) Donotapplyamultimetertothecontrolcircuitforchecking,otherwisevoltageofmultimeter
mightdamagesemiconductorcomponentsinthecircuit.
USAGE PRECAUTION
3
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
2 Winding of the bobbin thread
3 Threading of the needle thread
Passtheneedlethreadintheordershowninthe
rightgure.
1 Installation of the needle
Note: Before installing the needles, be sure to turn o󰮏 the power.
1 . Forneedle,use“Mt × 190”.
2  Determinethicknessoftheneedleaccordingtothicknessofthethreadused.
HOW TO USE
4
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
4 Setting of the bobbin
( 1 ) Putthebobbinintothebobbincaseinthe
directionthatthebobbininthebobbincase
turnsclockwise,viewedfromthefront,when
thethreadispulled.
( 2 ) Passthethreadthroughslit①ofbobbincase
andpull.
 Thethreadwillbeledoutfromtheguideeye
②.
Note:Thebobbinshouldturninthedirection
shownbyarrowinthegurewhenthe
threadispulled.
5 Leading out the bobbin thread
( 1 ) Putthebobbinandbobbincasetogetherinto
thehook,asshownintherightgure.
( 2 ) Pickuptheendofneedlethreadbylefthand,
andturnthepulleyonerotationbyright
hand.Whentheneedlethreadispulledup,the
bobbinthreadwillbedrawnoutasshownin
therightgure.
6 Adjustment of the bobbin
thread tension
7 Balance of threads tension
A 
B 
C 
Balancedtension
Tighttheneedlethreadtensionor
loosethebobbinthreadtension
Loosetheneedlethreadtensionor
tightthebobbinthreadtension
HOW TO USE
5
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
8
Adjustment of the needle thread tension
Theneedlethreadtensioncanbeadjustedby
changingpressureofthetensiondisk,andforce
andstrokeofthethreadtake-upspring.
●Adjustment of the tension disk pressure
1 . Inmostcases,threadtensioncanbeproperly
adjustedonlybychangingtightnessofthe
threadtensionnutⒶ.
2 . Toincreasepressure,turnthenutclockwise.
3 . Todecreasepressure,turnthenut
counterclockwise.
●Adjustment of the thread take-up spring force
Applyascrewdrivertothethreadtake-upspring
studandturnthestud.
Thespringforceincreaseswhenthescrewdriver
isturnedcounterclockwise,anddecreaseswhen
turnedclockwise.
Ifthestudistight,removethefaceplateand
loosenthescrewoftensionregulatorslightly.
●Adjustment of the thread take-up spring stroke
1 . Loosenthesetscrewusedtosecurethe
threadtensionregulatorslightly.
2 . Applyascrewdrivertothethreadtake-
upspringstudandturnthescrewdriver
counterclockwisetoincreasethestroke.
3 .
Turnthescrewdriverclockwisetodecreasethestroke.
4 .
Afteradjusting,besuretotightenthesetscrew.
 Thestandardstrokeofthreadtake-upspring
isfrom6to8mm.
9
Adjustment of the thread tension releasing
1 .
Adjustment of the thread tension regulator setting position.
 Thestandardgapisabout0.5mmwhenthe
tensionreleasecamsalienceisincontactwith
thetensionreleasepin.
 Toadjust,loosenscrewⒶandchangeposition
ofthethreadtensionregulatorproperly.
2 . Adjustment of the tension release timing
Note: Thetensionreleasetiminglargelya󰮏ects
stitchingoperation.Ifthegap betweenthe
tensiondisksis toosmall, theneedlethreadis
notdrawnproperly.Onthe contraryifthegap
istoolarge,the needlethreadmaybereleased
earlierandbecomeloose.
Thetensionreleasecamshouldbesetsothatthe
tensionreleasediskscometoopenatthetime
whentheredmarkpointonthepulleycomesin
linewiththeblackmarkpointonthearm.
Ex.:
ThreadusedCotton#40(doubletwist)
 FabricGeneralapparelandpad
 Needlethreadtension40-60g
 Bobbinthreadtension5-10g
 Threadtake-upspringforce15-20g
 Threadtake-upspringstroke6-8mm
HOW TO USE
6
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
< Adjustment of the presser foot
pressure
1  Thepressureadjustingscrewisfactory-
adjustedasshownintherightgure.
2 . Loosenthepressureadjustingscrewlocknut
andturnthepressureadjustingscrewⒶ.
3 . Turnthescrewclockwisetoincreasethe
pressure.
4 . Turnthescrewcounterclockwisetodecrease
thepressure.
Note:DonotchangesettingofscrewⒷ.
Ifthescrewis toolooseortoo tight,clapping
noisemayoccurduringoperation.
A Adjustment of working height
of the presser foot
1 . Height of the presser foot
Thestandardheightofthepresserfootatits
lowestpositionis1.0mmmeasuredbetweenthe
presserfootbottomsurfaceandthethroatplate
topsurface(seethedetailofpart“A”).
Toadjusttheheightofthepresserfoot,loosen
thesetscrewⒹusedtosecurethepresserbar
guidebracketandverticallymovethepresser
bar.
2 . Working height of the presser foot
LoosenscrewⒸandadjustpositionofpresser
barliftingbracketsothatthepresserfootstarts
goingupwhentheneedlepointreaches1.0to
1.5mmabovethepresserfootbottomsurface.
(Whenthisadjustmentismade,theheightof
thepresserfootatstopofthemachineisabout
15.5mmoverthethroatplate.)
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
B Timing between the rotating
hook motion and the needle
motion
Note:Ifyouremovethepresserfootandthe
throatplate,itmakeseasiertoadjust.
( 1 ) LoosenallscrewsⒶ,Ⓑ,Ⓒ,Ⓓ.
Note:Atthistime,don’tloosenthesetscrew
Ⓒtoomuch.
( 2 ) Checkthattherstscrewofthelargegear
entersanotch,andsettheneedlebaratthe
lowestposition.
( 3 ) Slidethelargegeartothehooksaddleand
meshwiththesmallgear.Atthistime,adjust
itsothatoneofthreesetscrewsⒹfaces
upward.
( 4 ) Lifttheneedlebar2.2mmfromthelowest
position.Refertotimingmarksshowninthe
gure.
( 5 ) Adjustthesaddlehookpositionsothatthe
gapbetweenthetipofthehookandthescarf
oftheneedleis0.05mmorlower.
( 6 ) TightenscrewsⒶ,Ⓑ.
Note:BecarefulnottoovertightenscrewⒷ.
( 7 ) Haveasmallgapbetweenthelargegearand
thesaddlehook,andtightenallsetscrewsⒸ.
( 8 ) Lifttheneedlebar2.2mmfromthelowest
positionagain,andadjustthetipofthehook
positionsothatitisinthecenterofthe
needle.
( 9 ) Whilecheckingthatthetipofthehookis
inthecenteroftheneedle,andtightenset
screwsⒹ.
Note:TighteneachscrewⒹlittlebylittle.
(10) Returnthemachineheadtotheoriginal
positionandadjusttheneedleguideposition
sothatitcomeslightlyincontactwiththe
needle.
Large gear
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
C
Relationship between the rotating
hook motion and the thread take-up
lever motion
Whenthetimingbeltisremovedforreplacement,
etc.,therelationbetweentherotatinghookmotion
andthethreadtake-uplevermotionshouldbe
adjustedasfollows:
( 1 ) Turnthepulleyandstopwhenthethread
take-upleverisliftedtothehighestposition.
( 2 ) Leanthemachineheadbackwardandcheck
thatthearrow(timingmark)putonthe
timingbeltisalignedwiththeblacklineon
thebossoflowershaftbearing.
( 3 ) Ifthetimingmarkisnotinlinewiththe
blackline,removethetimingbeltandinstall
itagaintoadjust.
D
Relationship between the rotating
hook motion and the opener motion
( 1 ) Turnthepulleybyyourhandandstopit
atthepositionwheretheopenerholderis
locatedmostremotelyfromthethroatplate.
( 2 ) CheckthatthegapbetweenthelugⒶand
theopenerisapproximately0.2mm.
( 3 ) Ifthegapistoolargeorsmall,loosenthe
openerholderscrewⒷandadjustpositionof
theopener.
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
2 .
Gap between the movable knife and the lug of
inner hook
( 1 ) Turnthepulleyandstopitattheposition
wheretheneedlecomestothelowest.
( 2 ) Whilepushingthecamfollowercrank,turn
thepulleyandstopitatthepositionwhere
themovableknifemovetothepositionas
showninthegure.
( 3 ) Turntheinnerhookandadjustsothatthe
gapbetweenthemovableknifeandthe
lugofinnerhookisabout0.2mm(screws
ⒶandⒷshouldbeloosenedforthis
adjustment).
E Installation of the movable knife
1 . Initial position of the movable knife
( 1 ) Turnthepulleyandstopitatthepositionwherethe
needlecomestothelowest.
( 2 ) Putthecamrollerintothethreadtrimmercamgroove
bypushingthecamfollowercrank.
( 3 ) Inthiscondition,turnthepulleyandstopitatthe
positionwheretheblackmarkpointonthearmmeets
thewhitemarkpointonthepulley.
 Setthecamfollowercrankatthispositionwitha
screwdrivertemporarilypreventingthecamroller
comingoutfromthecamgroove.
( 4 ) LoosenboltⒶ.
( 5 ) Adjustsothatthetipofthemovableknifeprotrudes
3to3.5mmfromthexedknife,asshowninthegure
andtightenboltⒶ.
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
F Adjustment of the thread trimmer cam
( 1 ) Turnthepulleyandstopitatthepositionwheretheneedlecomestothelowest.
( 2 ) Putthecamrollerintothethreadtrimmercamgroovebypushingthecamfollowercrank.
( 3 ) Turningthepulley,adjustthethreadtrimmercamsothatthemovableknifestartsmovingwhen
thegreenmarkpointonthepulleycomesinlinewiththeblackmarkpointonthearm.
 Toadjust,loosentwothreadtrimmercamclampscrewsⒶ.
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
G Adjustment of meshing pressure between the movable knife and the
xed knife
( 1 ) LoosenthexedknifebracketclampboltⒶ.
( 2 ) AdjustmeshingpressurebyturningtheupanddownadjustingscrewⒷ,andtightentheboltⒶ.
Note:Sinceoverpressurecausesalargetorqueonthethreadtrimmermechanismandtrimming
failure,adjustsothatthethreadcanbetrimmedwiththeminimumpressure.
( 3 ) Movethemovableknifeandcheckthatthethreadcanbesharplytrimmed.
H Sharpening of the xed knife
Ifthexedknifeisdull,itshouldbesharpenedasshowninthegure.
Sinceitisverydi󰮐culttosharpenthemovableknife,replaceitwithanewonewhenitdulls.
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
LX2-630-M1 Specications
Model
Specications LX2-630-M1
Application Bastingforgeneralapparel
Max.sewingspeed(rpm) 800
Needlebarstroke(mm) 39
Threadtake-upleverstroke(mm) 55.5
Presserfootstroke(mm) 21.0
Presserfootheight(mm)
(Topdeadpointofthreadtake-uplever) 15.5
Needle Mt×190#14(#11to#16)
Hook horizontalrotatinghook
Bobbin Madeofaluminumforthreadtrimmer
Lubricationsystem Automaticlubrication
Beddimensions(mm) 517×178
Note:●Don’toperatethemachineoverthemax.sewingspeed.
 ●Thebobbinshouldbeofhighqualityfreefromdeformation.
 ●Somematerials,and/orsewingconditionsmayrequirespecicationsotherthanthoselisted
above.
 ●Thesespecicationsaresubjecttochangeformachineimprovement.
SPECIFICATIONS
Printed in Japan
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
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Mitsubishi Electric LX2-630-M1 User manual

Category
Sewing machines
Type
User manual

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