MITSUBISHI
Industrial Sewing Machine
TECHNICAL INFORMATION
Automatic Undertrimmer, Single-Needle Lookstitch
Model LS2- 1 180
ET-035
• MITSUBISHI.. "ELECTRIC
From the library of: Superior Sewing Machine & Supply LLC
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CONTENTS |
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1. |
SPECIFICATIONS............................................................................................................................................. |
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2. |
THREAD TRIMMER SYSTEM ................................................................................................................... |
3-5 |
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2.1 |
Electric Section............................................................................................................................................ |
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2.2 |
Machine Head Section (1 ).......................................................................................................................... |
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2.3 |
Machine Head Section (2) .......................................................................................................................... |
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3. |
PREPARATIONS BEFORE OPERATION ................................................................................................... |
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3.1 |
Installation of Sewing Machine and Motor.............................................................................................. |
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3.2 Adjustment of Machine Stop Position...................................................................................................... |
7 |
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3.2.1 |
Adjust of "UP" position ................................................................................................................... |
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3.2.2 Adjust of "DOWN" position ............................................................................................................ |
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3.2.3 |
Comfirm the stop operation then the plug (12 pins) coming from the machine head |
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into the receptacle ............................................................................................................................ |
7 |
4. |
ADJUSTMENTS ...................................................................................................................................... |
7-14 |
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4.1 |
How to Adjust Timing between Needle and Hook.................................................................................. |
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4.2 |
Thread Trimmer Mechanism ..................................................................................................................... |
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4.2.1 |
Construction ...................................................................................................................................... |
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4.2.2 |
Cautions on adjustment ................................................................................................................... |
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4.2.3 |
Installation of knife base and fixed blade bracket unit.................................................................8 |
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4.2.4 |
Connection of knife base and knife driving crank ......................................................................... |
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4.2.5 |
Knife driving shaft and related parts .............................................................................................. |
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4.2.6 |
Installation of thread trimmer solenoid unit................................................................................ |
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4.2.7 |
Installation of thread trimmer cam ............................................................................................... |
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4.2.8 |
Adjustment of knife engagement.................................................................................................. |
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4.2.9 |
Adjustment of needle thread tension releasing amount............................................................ |
12 |
4.3 |
Adjustment of Needle Thread Remaining Length................................................................................. |
12 |
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4.4 |
Cautions on Installation of Touch-Back Solenoid ................................................................................. |
12 |
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4.5 |
Touch-Back Pushbutton ........................................................................................................................... |
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4.6 |
Wiper .......................................................................................................................................................... |
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4.6.1 |
Height of wiper ............................................................................................................................... |
13 |
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4.6.2 |
Wiper operation position ............................................................................................................... |
13 |
4.7 |
Adjustment of Forward and Reverse Stitch Lengths ............................................................................ |
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4.8 |
Adjustment of Feed Dog Inclination ....................................................................................................... |
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4.9 |
Timing of Feed .......................................................................................................................................... |
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4.10 Hook, Bobbin Case, and Bobbin ............................................................................................................. |
14 |
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5. |
TROUBLESHOOTING .................................................................................................................................... |
15 |
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From the library of: Superior Sewing1Machine & Supply LLC
1. SPECIFICATIONS
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It~I |
LS2-1180-LIT |
LS2-1180-MIT |
LS2-1180-MITW |
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LS2-1180-HIT |
LS2-1180-BIT |
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Material weight |
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Light |
Light to medium |
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Heavy |
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Max. sewing speed, spm |
4300 |
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5000 |
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3500 |
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3000 |
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Stitch length, mm |
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0 to 4 |
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0 to 7 |
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Needle bar stroke, mm |
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29.0 |
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31.8 |
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33.0 |
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35.0 |
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Presser foot stroke, mm |
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11/4 |
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11/5 |
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13/5 |
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(Knee lifter/Manual) |
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Needle |
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DA X 1 #11 |
DB X 1-2#14 |
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DB X 1 #22 |
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Heavy |
Heavy (Large) |
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Hook |
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Standard (for thread trimmer) |
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[fo~ thread] |
[ fo~ thread] |
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tnmmer |
tnmmer |
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Bobbin case |
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Standard |
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Heavy |
Large |
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Made of |
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Made of |
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Bobbin |
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aluminum for |
Made of steel, for thread trimmer |
steel for thread |
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thread trimmer |
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trimmer, large |
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Thread trimmer |
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Rotary scissoring by left movable knife and right fixed blade |
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Thread trimmer starting |
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Solenoid actuation |
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Knife drive |
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Cam drive |
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Touch-back |
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0 |
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Wiper |
-~·- |
-- |
- |
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0 |
j_ |
- |
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- |
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------ · |
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Oil |
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MC70M |
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2
From the library of: Superior Sewing Machine & Supply LLC
2. THREAD TRIMMER SYSTEM
2.1 Electric Section
i- -.,_ ________./
L----'
5
Part Names
G) Sewing machine |
® |
Touch switch |
® |
@ Balance wheel |
® |
Synchronizer |
® |
(j) Wiper solenoid |
®Motor |
® |
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@ Machine cord plug |
@ Control box |
@ |
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@ Detector cord plug |
@Pedal |
@ |
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@ Operation box |
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Back solenoid
Thread trimmer solenoid
Drive pulley
Operation box cord plug
POWER ON/OFF pushbutton
From the library of: Superior Sewing3Machine & Supply LLC
2.2Machine Head Section (1) Thread trimming mechanism
Part Names |
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CD Thread tension release |
®Flexible |
wire |
@Needle bar connecting link guide |
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@Pedestal |
®Movable |
knife (left) |
®Fixed |
blade |
(j) Knife driving crank |
®cam follower crank (1) |
®Cam |
follower crank (2) |
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@stopper |
@ Fixed blade bracket |
@Link |
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@Knife base (left) |
@Knife driving shaft |
@Coil spring |
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@ Driving lever |
@Thread trimmer solenoid |
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4
From the library of: Superior Sewing Machine & Supply LLC
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