Mitsubishi Electric PLK-G3040R User manual

INDUSTRIAL SEWING MACHINE
MODEL
PLK-G3040R
TECHNICAL MANUAL
SEWING MACHINE HEAD BASIC
A180E688P02

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.
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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.
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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) It is very dangerous to operate the sewing machine without safety guards (eye guards, motor
covers, link covers, finger guards or the others).
Please make sure to operate the sewing machine with safety guards.
(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, motor covers
, link covers, and finger
guards or the others) back on the initial position after the sewing machine adjustment.
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CONTENTS
1. STRUCTURE OF THE SEWING MACHINE··································· 1
2. INSTALLATION······································································· 2
2-1. Securing the Sewing Machine Table
························································
2-2. Connection of the air tube·····································································
2-3. Installation of the foot switch, and connection of the control cables················
2-4. Installation of the thread stand································································
2
3
4
4
3. LUBRICATION········································································ 5
3-1. Oiling
································································································
3-2. Filling the oil tank················································································· 5
5
4.INITIAL SETTING OF THE CONTROL BOX··································· 5
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

1. STRUCTURE OF THE SEWING MACHINE
PLK-G3040R electronic pattern sewing machine consists of the following main parts.
Start foot switch
Work holder
foot switch
Pneumatic control unit
Presser plate
Feed plate
Adjuster
Wheel
X
･
Y table
cover
Main unit
frame
Table
Thread tension
regulator
Work holding
device
Control box
Operation panel
Presser foot
Cotton stand
Detector
Manual pulley
Bobbin winder
Halt switch
Presser foot
regulating screw
Power switch
- 1 -
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2. 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.
2-1. Securing the Sewing Machine Table
(1) Install the table at a rigid and flat floor to
avoid the chatter.
(2) When the table was placed in position, lift a
little wheels using the adjuster provided at
the bottom of table and fix the table. After
the fixing, lock it in position with hex nuts
attached to the adjusters. (see the right fig.)
(3) When the sling hooks at 4 corners of table is
obstructing the work, remove and keep for
the future use.
Adjusters
Hex nuts
Wheels
- 2 -
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2-2. Connection of Air Tube
(1) Connect the attached tube between the joint E of air pressure control unit (see the lower fig.) and
the compressor.
(2) Turn the residual pressure exhaust valve lever to right.
Compressed air is fed from IN to OUT and supplied to the air
cylinder through a solenoid valve. Be careful because this
operation starts synchronously all units driven via the air
cylinder. By the way, the residual pressure exhaust valve is
installed for the safety at the inspection or repair and it
releases compressed air from the pipe and prevents
unexpected operation of air cylinder. If the residual pressure
exhaust valve lever is turned to this side (position indicated
with broken line in the right fig.), valve at IN side closes and,
synchronously with the compressed air supply interruption,
compressed air in the air cylinder is reversed from OUT to
EXH and released to the atmosphere.
(3) Set the air pressure of main circuit at 0.4 MPa with the filter regulator A. Set the pressure to the
slider air circuit at 0.2±0.05 MPa with the regulator B.
[Notice] Since the pressure of slider air circuit (regulator B) is related to the stitching tension, do not
adjust it below 0.15 MPa or beyond 0.25 MPa.
(4) Confirm that the operating pressure of pressure switch is set at 0.3 MPa. If it is not correct, turn the
operating pressure adjust screw with a flat head screwdriver and set the needle at 0.3 MPa. This
value is the pressure drop detecting pressure.
EXH
IN
OUT
Exhaust position
Pressure switch
Pressure switch
Operating presser
adjust screw
Indicator 0.3 MPa
Regulator B
Accessory tube
Filter・regulatorA
Joint E Residual pressure release valve
- 3 -
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2-3. Installation of the foot switch, and connection of the control cables
Connect the foot switch to the connector CON H. The foot switch is enclosed in the accessory box.
Control cable to connect to already be connected as shown on the figure below.
2-4. Installation of the thread stand
(1) Assemble the parts (No.1 to No.11 , and No.15) of the thread stand as shown on the figure.
(2) Fit the thread stand into the hole at the far right on the table stand with the nut (No.13) , the washer
(No.12) and the collar (No.14).
CON A: Operation panel
CON B: Power supply
CON C: Various solenoid DC power
CON D: Spindle motor
CON E: Various solenoid
CON F1: Detector
CON F2: Spindle encoder
CON G: X-Y spindle encoder
CON H: Foot switch
CON J: X-Y spindle stepping motor
CON B
CON C
CON D
CON G
CON J
CON A
CON E
CON F1
CON F2
CON H
<1>: Upper column pipe
<2>: Lower column pipe
<3>: Spool stand base (two stand bases)
<4>: Spool mat (two mats)
<5>: Spool holder (two holders)
<6>: Spool shaft (two shafts)
<7>: Spring washer (two washers)
<8>: Nut (four nuts)
<9>: Thread hunger
<10>: Spool holder
<11>: Column joint
<12>: Washer
<13>: Nut
<14>: Collar
<15>: Thread tension guide
<1>
<12>
<3>
<4>
<6>
<7>
<8>
<9>
<2>
<10>
<11>
<5>
<13>
<14>
<15>
- 4 -
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3. LUBRICATION
CAUTION
(1) Please make sure to turn power switch off before lubricating.
(2) Please pay attention that oil does not get on your skin or in your eyes as it may cause an inflammation.
(3) Please make sure to keep oil out of the reach of children who may drink oil by mistake.
(4) Please make sure to lubricate when operati
ng for the first time after the installation.Also, please make
sure to check the amount of oil when the machine has not been used for a long time.
[Notice] Please use a pulley oil SF oil.
3-1. Oiling
Before proceeding with operation, be sure to lubricate, as necessary, parts A to K indicated by the
arrows in the figure.
3-2. Filling the oil tank
Draw out the oil gauge at top face of machine
bed, supply oil up to the depth k. Insufficient oil
reservation may induce the burning due to
interrupted oil supply to the hook, each section of
bed. Make sure to check the indication on the oil
gauge so as to replenish oil timely.
4. INITIAL SETTING OF THE CONTROL BOX
When using the sewing machine for the first time, the model and the language of the sewing machine in
use have to be set.
Refer to the instructions in the paragraph “[6] Initial Setting of System (Model/language Setting)” in the
CONTROL UNIT technical manual.
Machine bed
Needle plate
A
H
K
J
I
B
C
D
E
F
G
Machine bed
Needle plate
Slide plate
(right)
Oil gauge
k
- 5 -
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