Kitagawa NPG3 Manuale utente

INSTRUCTION

MANUAL

MODEL NPG3

3-jaw Shield Gripper

・This Instruction Manual has been prepared for intended use for

production engineers and maintenance persons who operate this

product. When the beginners use this product, be sure to receive the

guidance from skilled persons, sales agents, or us in advance.

・Before installing, using, or maintaining this product, read carefully the

safety precautions given in this manual so as to understand them

completely. If you do not heed given instructions or safety

precautions, serious human accidents, death, or physical damage

may occur.

・Store this manual with care in the specified place at hand, and reread

it as necessary for correct use of the product.

・Please contact the sales agent if you have any uncertainty or doubt

about this manual.

DANGER

MA1381YHG2

Version1.02(20221226)

Preface

This manual provides detailed information on the 3-jaw shield gripper (model NPG3) so that

you can understand its performance and functions and use it safely and correctly.

Before using this gripper, read this manual carefully to understand how to use the gripper

correctly. Always follow the instructions and warnings given in “Important Safety

Precautions” and “Precautions for Use”. Failure to follow these precautions could result

in serious human accidents.

Terms and Symbols Used for Safety

Messages

In this manual, handling precautions that are considered especially important are classified

and displayed as shown below according to the degree of risk (seriousness of harm) that

could result. Please completely understand the meaning of these terms and follow the

instructions for safe operation.

Safety Alert Symbol

This triangle is a safety alert symbol used to alert you to potential safety hazards. To avoid

death or injuries that could occur, follow the safety messages given with this safety alert

symbol.

Failure to follow the safety precautions below will result

in death or serious injuries.

Failure to follow the safety precautions below could

result in death or serious injuries.

Failure to follow the safety precautions below may result

in minor or moderate injuries.

Indicates instructions which, if you do not heed given

instructions, could result in damage to the product or

shortened service life, or damage to peripheral

equipment.

Disclaimer and How to Use Instruction

Manual

This product is suitable for gripping a conveyed workpiece by being installed on the robot or

loader. The product is equipped with the jaws to grip the conveyed workpiece and they are

operated by air pressure. For any other applications, please contact us.

Kitagawa Corporation shall not be held liable for human accidents, death, damage, or loss

that occurred due to a failure to follow the safety precautions given in this manual.

This manual does not predict all potential hazards in operation, inspection, and

maintenance under all environmental conditions. There will be an infinite number of matters

that cannot or must not be done, and it is impossible for the manual to cover all of them.

Therefore, the matters, unless otherwise mentioned clearly as “can be done” or “may be

done” in this manual, should be considered as “cannot be done” or “must not be done”.

Please contact us or our agents if you have an uncertainty about safety when you try to

perform operation, inspection, or maintenance not mentioned in this manual.

Warranty and Disclaimer

The product is warranted for one year after the date of delivery.

All parts used shall be those delivered by Kitagawa Corporation. Kitagawa Corporation

shall not be held liable for human accidents, death, damage, or loss that occurred due to

the use of parts which are not genuine parts manufactured by Kitagawa. Also, the use of

parts other than Kitagawa’s genuine parts will void the warranty.

Contents

1. Structural Drawing and Parts List 4

1-1.Model indication

1-2.Structural drawing

1-3.Seal list

1-4.Parts list

2. Important Safety Precautions 6

3. Specifications 10

3-1.Specification table

3-2.Gripping force

4. Use 13

5. Design of Jaws 14

5-1. Designing jaws to be installed on the gripper

6. Installation 15

6-1.Installing the gripper

6-2.Installing the jaws

6-3. Connecting the air piping

6-4.Installing the switches

7. Maintenance and Checking 20

7-1.Periodic checking

7-2.Maintenance interval

7-3.Grease

7-4. Disassembly and assembly procedure

8. Troubleshooting 25

8-1.Problems and countermeasures

8-2.Contact address in case of trouble

9. Others 26

9-1.Standards and directives to which the gripper conforms

9-2.Disposal of gripper

1. Structural Drawing and Parts List

1-1. Model indication

The model indication is as follows:

NPG3 10

1-2. Structural drawing

1-3. Seal list

No.

型式

206

207

208

209

210

NPG310

O-ring SS5

O-ring S75

X-ring X126

X-ring X232

Seal washer 10S1

Series

Size

NPG3

NBR Seal

Master jaw

Plunger

Cover Seal

Rear cover

Piston

Cover

Body

１-４．Parts List

No.

部品名称

個数

No.

部品名称

個数

Body

202

Cover fixing bolt

Rear cover

203

Rear cover fixing bolt

Master jaw

204

Set screw

Plunger

205

Spring pin

Piston

206

O-ring Ａ

Cover

207

O-ring Ｂ

Cover seal

208

Jaw packing

Positioning bushing

209

Piston packing

210

Seal washer

201

Piston fixing bolt

211

Seal cap bolt

202

211

201

208

206

205

209

210

207

204

203

NPG310

2. Important Safety Precautions

Important safety precautions that particularly you should know or follow are summarized

below. Please read them before starting to use the product.

DANGER

Failure to follow the safety precautions below will result

in death or serious injuries.

Be sure to turn off the main power supply when installing, checking,

oiling, or replacing the gripper.

Also, shut down the air pressure in the work area.

●During work, the robot or gripper

could move abruptly and collide

with your body.

●After shutting down the air

pressure, release the air

pressure remaining inside the

gripper.

When installing, checking, oiling, or replacing the gripper, post a sign or

notice, or provide a fence, and so on to notify people around the machine

that work is in progress.

●Notify people around the machine that work is in progress and take measures to keep

people other than the operator out of the work area.

Machine motion not predicted by a third party could cause serious danger.

Take safety measures so that the operator is not injured even if the

conveyed workpiece flies out due to the reduced air pressure.

●Observe the legal safety

standards defined by each

country, such as installation of

safeguards or fall prevention

covers.

！

Main power

OFF

Air pressure

DANGER

Failure to follow the safety precautions below will result

in death or serious injuries.

Do not modify the gripper.

●Not only the gripper is

damaged but also the

gripper and fixed workpiece

may fly out.

If using the gripper as a workpiece fixture when the workpiece is drilled,

deburred, welded, or modified additionally, confirm the specifications.

●If the gripper is used out of

the specifications, not only

the gripper is damaged but

also the fixed workpiece may

fly out.

Be sure to tighten the bolts with the specified torque.

●Lack of bolt quantity or

tightening torque, or

excessive torque could

damage the bolt, causing the

gripper or conveyed work

piece to fly out.

●When tightening the bolts, fix

the gripper so that it will not

rotate. Failure to do so may

result in injury by slipping

your hands when tightening

the bolts.

Gripper body fixing bolt

Boltsize

Tightening torque

5.5

N･m

10.8

N･m

26.5

N･m

Piston fixing bolt

Boltsize

Tightening torque

10.8

N･m

26.5

N･m

Cover fixing bolt

Boltsize

Tightening torque

N･m

3.5

N･m

Rear body fixing bolt

Boltsize

Tightening torque

4.8

N･m

8.6

N･m

DANGER

Failure to follow the safety precautions below will result

in death or serious injuries.

Use the gripper in accordance with the legal safety standards.

●Use the gripper in accordance

with the legal safety standards

defined by each country, such as

installation of safeguards or

safety covers.

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