Mitsubishi Electric MP-J25-PS User manual

INDUSTRIAL SEWING MACHINE
Attachment
MODEL
MP-J25-PS
TECHNICAL MANUAL
PERFECT STITCH UNIT
A180E845P01

FOR SAFE USE
Before the installation, operation, and inspection for this product, read the “FOR SAFE USE” and the
technical manuals carefully. Also read the other technical manuals, “Control Unit” and “Operation Panel”
describing some instructions, which are not in this manual, and use the sewing machine properly.
SAFETY INDICATIONS
DANGER
Indicates that incorrect handling may cause hazardous conditions, resulting
in death or severe injury.
CAUTION
Indicates that incorrect handling may cause hazardous conditions, resulting
in medium or slight personal injury or physical damage. Note that CAUTION
level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to
personal safety.
CAUTION INDICATIONS
No.
Caution indication
Description
1
Precaution for sewing machine operation:
Indicates that removing the safety and operating the sewing
machine for some other purposes with power-on are prohibited.
⚫Please do not operate the sewing machine without
protective equipment such as a needle guard, an eye guard,
a belt cover or the others.
⚫Please turn off the power switch when threading, changing
a needle and a bobbin, cleaning, and lubricating.
2
Caution for fingers injury:
Indicates a possibility of fingers (hands) injury in a certain
condition.
3
Caution for squeezing fingers:
Indicates a possibility of squeezing fingers in a certain condition.

SAFETY PRECAUTIONS
DANGER
To prevent from receiving an electric shock, always turn off a power switch and unplug power supply
when opening a control box, and then open after ten minutes passes.
CAUTION
USAGE ENVIRONMENT
Please do not operate the sewing machine under the following conditions.
(1) In the ambient temperature of 35 degrees (95°F) or more than 35 degrees, or the ambient
temperature of 5 degrees or less than 5 degrees (41°F).
(2) In the ambient temperature of 55 degrees (131°F) or more than 55 degrees, or the ambient
temperature of -10 degrees or less than -10 degrees (18°F) during transportation.
(3) In the relative humidity exceeding 85% or less than 45%.
(4) In the open-air place or the location that receives direct sunlight.
(5) In the place near heat sources such as heating devices.
(6) In the atmosphere filled with dust, explosive gas, or corrosive gas.
(7) In the place where the fluctuation in the power voltage of 10% or more than 10%, or the power
voltage of -10% or less than -10% of the fixed power voltage.
(8) In the place where the power source cannot supply enough voltage to keep the motor running.
(9) In the place filled with strong electric noises such as high-frequency welders.
INSTALLATION
(1) Please have some specialists, who have enough experience for the sewing machine installations,
install the sewing machine.
(2) Please have a qualified electrician perform necessary electric wiring.
(3) Please do not operate until the sewing machine is repaired when any damage or fault is found on
the sewing machine at the installation.
(4) Please do not refurbish the sewing machine.
(5) The sewing machine is heavy. For the safety, please make sure to install the sewing machine head
by more than one person.
(6) Please make sure to fit the safety protective equipment (the motor cover or the others) and the
accessory protective equipment (the eye guard) that removed temporarily for installation.

SEWING
(1) Please make sure to turn the power switch off before installing or replacing needles.
(2) Please pay attention for the fingers not to be injured by the needle point.
(3) Please make sure to turn power switch off before lubricating.
(4) Please pay attention that oil does not get on your skin or in your eyes as it may cause an
inflammation.
(5) Please make sure to keep oil out of the reach of children who may drink oil by mistake.
(6) Please make sure to turn the power switch off before threading a needle.
(7) Before starting the sewing, please make sure the position and the function of the halt switch.
(8) Please do not touch the operating parts during sewing operation.
(9) Do not operate the perfect stitch device that has been without safety device such as injury
prevention cover and area sensor. These are to be supplied by customer.
(10) Please make sure to turn the power switch off when stopping the sewing machine temporarily.
ADJUSTMENT
(1) Please make sure to turn the power switch off before adjusting the sewing machine.
(2) If the adjustment is required while the power switch on, do not step on the foot switch by mistake.
(3) Please be careful not to be injured by a sharp part such as the needle and the shuttle hook point.
(4) Please make sure to put the safety guards (eye guards, belt guards, link covers, and finger guards
or the others) back on the initial position after the sewing machine adjustment.
(5) Do not touch the clamp rotation mechanism that are the clamp, turn table and rotation drive unit
during the machine power ON.
To prevent the unexpected operation, do not move the clamp rotation mechanism by hand during
the machine power ON.

CONTENTS
1. STRUCTURE OF THE SEWING MACHINE····································
1
2. SPECIFICATIONS·····································································
2
2-1. Specifications······················································································
2-2. Positional relations of the machine and sewing area and clamp······················
2
3
3. INSTALLATION········································································
4
3-1. Removing the unnecessary work holder unit and cover component·················
3-2. Removing the various cover····································································
3-3. Installation of the rotation drive unit adapter················································
3-4. Installation of the support bracket····························································
3-5. Installation of the thread take up spring stopper···········································
3-6. Installation of the slide plate····································································
3-7. Installation of the support bracket·····························································
3-8. Installation of the base bracket································································
3-9. Installation of the perfect stitch unit
(Installation of the motor drive unit) ··························································
3-10. Installation of the perfect stitch unit
(Installation of the clamp rotating unit)······················································
3-11. Adjustment of the timing belt tension·······················································
3-12. Installation of the turn table unit······························································
3-13. Installation of the θaxis sensor unit·························································
3-14. Connection of the electric cables····························································
3-15. Installation of the θaxis motor cover························································
3-16. Installation of the XY cover····································································
3-17. Installation of the various cover······························································
4
6
6
7
8
9
10
11
12
14
17
18
19
20
23
24
24
4. INITIAL SETTING·····································································
25
4-1. Installation of the system ·······································································
4-2. How to operate jig clamp········································································
4-3. Initial adjustment of turn table home position···············································
4-4. Initial adjustment of rotation home position·················································
25
25
26
31

5. PROPER OPERATION (CLAMP ROTATION) ································
33
5-1. Outline·······························································································
5-2. Basic operation of clamp rotation ·····························································
5-3. Clamp rotation details············································································
33
33
36
6. MAINTENANCE·······································································
37
6-1. Cleaning ····························································································
6-2. Greasing·····························································································
37
37
APPENDIX 1. Program mode list
APPENDIX 2. Parts catalog
APPENDIX 3. Dimensional drawing of slide plate

- 1 -
1. STRUCTURE OF THE SEWING MACHINE
MP-J25-PS (Perfect stitch unit) consists of the following main parts.
<1>
<3>
<4>
<2>
<4>
<1>: Motor drive unit <2>: Clamp rotating unit <3>: Turn table unit
<4>: Jig clamp unit

- 2 -
2. SPECIFICATIONS
2-1. Specifications
Model
MP-J25-PS
Applicable model
PLK-J2516R-YU
Sewing area *1
X-direction (left/right) 140 mm
Y-direction (front / back) 140 mm
Maximum sewing speed *2
1,000rpm
Setting speed
10 speed levels in 200 rpm to 1,000 rpm
Work holder type
Jig eject system (Manual eject type)
*1: Sewing area stated on the basis of the area limit default value. For more details, please see next
section.
*2: Sewing speed may be limited by the operation or sewing condition.

- 4 -
3. INSTALLATION
CAUTION
(1) Please have some specialists, who have enough experience for the sewing machine installations,
install the sewing machine.
(2) Please have a Qualified Electrician perform necessary electric wiring.
(3) Please do not operate until the sewing machine is repaired when any damage or fault is found on the
sewing machine at the installation.
(4) Please do not refurbish the sewing machine.
Install this device according to following procedures. Attaching screws which explains this manual are
included in this devices package. Before installing, check if the sewing machine is in the condition suitable
for proper sewing.
3-1. Removing the unnecessary work holder unit and cover component
(1) Remove the needle and presser foot.
(2) Remove each four of M5 screw <3>, washers <4> and each four of M4 screws <5>, washers <6> then
remove the work holder unit <1>.
(3) Remove each two of M5 screws <7>, washers <4> and remove the feed plate <2>.
(4) Remove the air piping for work holder then, attach the plug to the solenoid valve. Plug is included in
this devices package.
<1>: Work holder unit <2>: Feed plate <3>: M5 screw <4>: Washer 5
<5>: M4 screw <6>: Washer 4 <7>: M5 screw
<1>
<2>
<7>
<4>
<3>
<4>
<5>
<6>