Mitsubishi Electric PLK-J3020R-SE Bedienungsanleitung

INDUSTRIAL SEWING MACHINE

MODEL

PLK-J3020R-SE

TECHNICAL MANUAL

SEWING MACHINE HEAD

A180E854P01

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

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.

Caution for fingers injury:

Indicates a possibility of fingers (hands) injury in a certain

condition.

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.

(7) The control box is required to use for model PLK-J3020R-SE only. Other type of the control box for

which except the model PLK-J3020R-SE cannot use this machine. Besides, this control box cannot

use for other type of sewing machine.

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, belt 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.

(11) The sensing data of the needle thread tension and presser foot position are reference only. In this

reason, sensing function is not guarantee the sewing quality. For more detail of the sensing

function, please refer to the instructions OPERATION PANEL technical manual.

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.

CONTENTS

1. STRUCTURE OF THE SEWING MACHINE····································

2. SPECIFICATIONS·····································································

3. INSTALLATION········································································

3-1. Preparation of the table··········································································

3-2. Preparation of the steel stand··································································

3-3. Installation of the control box···································································

3-4. Installation of the operation panel·····························································

3-5. Installation of the power switch and foot switch············································

3-6. Installation of the oil pan·········································································

3-7. Installation of the machine head·······························································

3-8. Installation of gas spring·········································································

3-9. Installation of the tilting detect switch························································

3-10. Connection of the electric cables····························································

3-10-1. How to remove the motor cover························································

3-10-2. Connection of the PF axis cables······················································

3-10-3. Connection of the XY axis cables······················································

3-10-4. Connection of the main servo and sub servo motor cables·····················

3-10-5. Connection of the I/F board cables····················································

3-10-6. Connection of the optional output connector········································

3-10-7. Fixing of the cables········································································

3-11. Connection of the air tube·····································································

3-11-1. Installation of the filter regulator and air piping·····································

3-11-2. Piping of the oil drainage tube··························································

3-12. Installation of the thread stand·······························································

3-13. Installation of the eye guard···································································

4. LUBRICATION·········································································

4-1. Filling the oil tank··················································································

5. PROPER OPERATION······························································

5-1. Setting of the main servo motor upper position············································

5-2. Setting of the thread take up lever position·················································

5-3. Installation of the needle·········································································

5-4. Threading the needle thread···································································

5-5. Winding the bobbin thread······································································

5-6. Setting the bobbin·················································································

5-7. Setting the bobbin case··········································································

5-8. Operation of the halt switch·····································································

5-9. Adjustment of the thread tension······························································

5-10. Adjustment of upper thread tension·························································

6. STANDARD ADJUSTMENT························································

6-1. Adjustment of the needle bar position·······················································

6-2. Adjustment of the position between the needle and the rotating hook··············

6-3. Adjustment of the hook positioner’s position···············································

6-4. Adjustment of the oil lubrication for the rotating hook····································

6-5. Adjustment of the oil lubrication for the machine head··································

6-6. Setting of the presser foot movement·······················································

6-7. Adjustment of the wiper·········································································

6-8. Adjustment of the thread take up spring····················································

6-8-1. Adjusting movable range of the thread take up spring·····························

6-8-2. Adjusting intensity of the thread take up spring······································

6-9. Adjustment of the thread tail after the trimming··········································

6-10. Adjustment of the air pressure·······························································

6-11 Changing the work holder·····································································

7. VARIOS ADJUSTMENT·····························································

7-1. How to exchanging the tension spring of the needle thread tensioner unit········

7-2. Adjustment of the detector position of the presser foot unit····························

7-3. How to replace with a special pressor foot·················································

7-4. Adjustment of the pressor foot holder position············································

7-5. Adjustment of the thread trimmer·····························································

7-5-1. Structure of the thread trimmer mechanism··········································

7-5-2. Assembling and readjustment of the thread trimmer mechanism···············

7-5-2.1 Attaching the knife bracket and the knife mounting unit··························

7-5-2.2 Mutual relation among the movable and stationary knife edge·················

7-5-2.3 Connection of the knife bracket and the driving crank····························

7-5-2.4 Adjustment of the component parts of the knife driving mechanism··········

7-5-2.5 Adjustment of the mounting position of the air cylinder···························

7-5-2.6 Adjustment of the mounting position of the thread trimmer cam···············

7-5-2.7 Adjustment of the knife engagement··················································

7-6. Adjustment of the X-Y table detector························································

7-6-1. Adjustment of the X-Y mechanical home position···································

7-6-2. Adjustment of the X direction·····························································

7-6-3. Adjustment of the Y direction·····························································

7-6-4. The X-Y drive timing belt tension························································

8. MAINTENANCE·······································································

8-1. Cleaning····························································································

8-2. Greasing····························································································

8-3. Disposing of oil waste···········································································

9. TROUBLESHOOTING·······························································

10. APPENDIX

10-1. Air piping drawing

10-2. Steel stand drawings

- 1 -

1. STRUCTURE OF THE SEWING MACHINE

PLK-J3020R-SE electronic pattern sewing machine consists of the following main parts.

<1>: Sewing machine head <2>: Main shaft motor <3>: Halt switch <4>: Control box

<5>: Operation panel <6>: Work holder switch <7>: Start switch <8>: Gas spring

<9>: Steel stand <10>: Thread stand

<1>

<4>

<2>

<10>

<5>

<6>

<7>

<8>

<9>

<3>

- 2 -

2. SPECIFICATIONS

Model

PLK-J3020R-SE

Stitch type

Single needle lock stitch

Hook

Double size rotating hook

Class of needle

DPX17#18

Sewing area

X-direction (left/right) 300 mm

Y-direction (front / back) 200 mm

Maximum sewing speed *1

2,300rpm (Continuous feeding) 2,300rpm (M3 feeding)

Setting speed

10 speed levels in 200 rpm to 2,300 rpm (M3 feeding)

Stitch length

0.1 to 20.0 mm (min. resolution 0.1 mm)

Maximum number of needles

20,000 per pattern

Storable sewing data item

9,000 patterns *2

Data memory

USB memory

Type of motor (Main)

750W direct servo motor

Type of motor (Sub)

400W direct servo motor (For the thread take up lever direct drive)

Work holder lift

30 mm

Needle bar stroke

40.0 mm

Thread take up lever stroke

73.0 mm

Presser foot drive

Direct drive by stepping motor

Presser foot lift

18.0 mm (max. 24.0 mm) Variable in 0.1 mm step

Presser foot stroke

Digital adjustment stroke: 0.1 to 10.0 mm

Upper thread tensioner

Manual /Automatic / Setting on pattern (switchover)

Wiper system

Back to front wiping system

Oil lubrication

Replenishment with the oil braids from the oil tanks.

Spray method (Inside of the sewing machine head only).

Operation panel

6.5-inch color LCD touch panel with USB port

External device I/F

USB port, Terminal I/O: 16 input, 16 output

Thread trimmer system

Arc engagement with fixed knife and movable knife

Machine dimensions

(W)x(L)x(H)

1,200mm x 1,144mm x1,320mm

Weight

190kg

Power

In 200V to 240V single-phase or three-phase

*1: Sewing speed may be limited by the operation or sewing condition.

*2: The max. patterns may be limited depending on the number of stitches of each pattern in the memory.

- 3 -

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.

3-1. Preparation of the table

(1) If the table is not MITSUBISHI original, the thickness of the table is required to have 40mm and that is

strong enough to withstand the weight and vibration of the sewing machine.

(2) Manufacture the table as shown on the figure below.

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