REA JET SK 7 Bedienungsanleitung

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

REA-JET Print Heads

SK 7

SK 16

SKP 7

SKP 16

SKS 7

SKS 16

for use with

REA-JET Ink Supply Units

Users Manual

Version 1.1

Published by REA Elektronik GmbH, D-64367 Muehltal-Waschenbach, Germany. All rights

reserved.

Any duplication of this document, in whole or in part, may only be granted with the written

permission of the publisher.

Although this documentation has been compiled with the greatest care, some information may be

incorrect or may contain errors. REA Elektronik accepts no responsibility for damages which might

be caused due to such incorrect information.

As we are continuously striving to improve our products, REA Elektronik GmbH reserves the right

for modifications, document amendments and software updates subject to change without prior

notice.

REA Elektronik GmbH

Teichwiesenstraße 1, D-64367 Mühltal-Waschenbach, Germany

Tel.: + 49 6154/638-0 ∙Fax: + 49 6154/638-195

[email protected] ∙www.rea.de Date: Oktober, 2006

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

Content

1Information on hints and warnings ________________________________________1

2Proper use of equipment ________________________________________________2

3Improper usage of equipment ____________________________________________2

4Scope of supply ________________________________________________________3

5Safety notes ___________________________________________________________4

6Operator requirements __________________________________________________6

7System specification ____________________________________________________7

8Fitting and Comissioning ________________________________________________9

8.1 System components___________________________________________________9

8.2 System assembly instructions__________________________________________14

8.3 Operation of several print heads with one ink supply unit ______________________19

8.4 Adjusting the print image _______________________________________________20

8.5 Adjusting parameters _________________________________________________20

8.6 „Dot-Size“ adjusting procedure_________________________________________20

8.7 Setting of print height_________________________________________________21

9Maintenance __________________________________________________________22

9.1 Cleaning of nozzle plate and ink chamber _______________________________22

9.2 Maintenance plan ____________________________________________________25

9.3 Flushing of print head_________________________________________________25

9.3.1 Flushing a standard system__________________________________________25

9.3.2 Flushing of pigmented system________________________________________26

10 Maintenance __________________________________________________________26

11 Dismantling ___________________________________________________________27

12 Disposal______________________________________________________________27

13 Trouble shooting ______________________________________________________28

14 Appendix _____________________________________________________________30

14.1 Technical data_______________________________________________________30

14.2 Dimensions of print head______________________________________________31

15 Warranty Conditions ___________________________________________________35

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

1 Information on hints and warnings

This manual contains general hints and warnings. The meaning of the respective icon is described

below.

Hints and warnings are always highlighted by the prefixed icon.

Danger

This icon indicates that there is direct danger ahead

threatening life or health of people!

Warning

This icon indicates that there could be danger ahead

threatening life or health of people!

Attention

This icon indicates that there could be danger ahead

which could lead to injury of people or damage to

equipment.

Information

This icon indicates that this is a useful hint or

information for the operator of the system.

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

2 Proper use of equipment

The REA-JET print head (following: print head) is designed to process low viscosity liquids. Only

REA authorized inks and cleaners are allowed to be used within the print heads.

The print head can only be operated with REA-JET hardware and software. The use of any

equipment, parts or components that are not REA admitted within the REA-JET coding and

marking system the operator has to bear the responsibility for doing so.

The print head is factory adjustedand does not need any additional calibration by the operator (see

also under 5 Safety notes).

For any unintended use of the REA-JET systems the operator carries the responsibility. REA can

not take over any seller´s warranty for damage caused by unintended use of the system.

The present equipment is not meant for use in any explosion hazardous environment.

3 Improper usage of equipment

The coding system is not designed to be operated as a handheld device.

It is forbidden to splash any of the inks or solvent on any persons or living creatures.

The use of any not REA tested and REA approved substances within the REA-JET systems

represents an improper use for which REA Elektronik excludes to take over any liability.

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

4 Scope of supply

Based on the many variations the REA equipment can be configurated we resign to list up in detail

all types of available components.

A coding and marking system usually consists of the following components:

REA-JET print head

Controller

Input terminal

Power supply

Product sensor*

Shaft encoder*

Mounting bracket for product sensor*

Mounting bracket for shaft encoder*

Print head bracket*

Ink

Solvent

* optional

Packaging

The equipment will be either delivered and installed by REA technical staff or shipped to your

location in a reusable cardboard container with foam material inlay. This packaging material

should be kept for any service purposes. If this is not desired the container can be disposed

according to applicable standards.

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

5 Safety notes

This manual does not claim to contain all necessary

information for safe of the system. There could be more

information relevant in the respective country.

Before operating the system carefully read the manual.

When working on the system it is mandatory to protect

from consumables (ink, solvent) which can injure eyes

and skin.

Relevant information can be taken from relevant

material safety data sheet.

Manipulating the pneumatical, electrical and/or

hydraulical circuits can lead to severe injuries and death

in particular cases.

Changes of specific components are subject to be

carried out by REA staff or REA representatives only.

Please check all system components and hoses on a

regular basis for leakage. In case of a leakage the

system has to be turned off and repaired. In a case like

that please get in touch with REA service department

for support.

Please check all existing connecting lines (electric,

hydraulic, pneumatic) as well as fittings on a regular

basis. Should any components be damaged or should

not be safe anymore make sure to shut the system off

and eliminate the failure.

In a case like that please get in touch with REA service

department for support.

Should a system be taken out of operation for a longer

period of time make sure to flush the system using the

adequate cleaner before putting it back into operation

(see also chapter 9.3 Flushing of print head).

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

When shutting down the system it is advisable to drain

all pressurized hoses. This can easily be done by

switching off and venting the system.

Please follow the guidelines in the users manual of the

respective REA-JET ink supply system.

Should a malfunktion occur the system has to be shut

off immediately.

Do not reconnect the system before the technical cause

of the malfunction is found and fixed. To guarantee a

trouble free operation and to preserve warranty

coverage only REA original spare parts are allowed to

be installed.

The present system is not admitted for use in any

explosion hazardous environment.

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

6 Operator requirements

To install the REA-JET coding and marking system technical knowledge how to set up electrical

equipment is required.

For operation and maintenance of the coding and marking system a certified training is mandatory.

This training will allow the user to properly work with all system components and will also train for

proper handling of consumables such as inks and cleaner.

Rationalisierung Entwicklung Automation

Elektronische Geräte und Systeme

7 System specification

The present REA-JET print head represents the DOD (Drop-On-Demand) technology. The DOD

principle provides a droplet of ink only when ink is needed to print an image or a character.

Contrary to this technology is the principle of CIJ (continuous ink jet) printers where a continuous

jet of ink droplets is generated and only certain droplets which form a character or image are

deflected to arrive on the printing surface (canvas).

The advantage of a DOD system lies in its robustness and sturdiness, the ease of use and the

wide range of applications.

The REA-JET system components can be combined in multiple ways and allow a flexible

combination to meet most customer application requirements.

Technical specification

The print head is made from a pipe which in combination with the back and front panel forms the

housing for the mechanical parts.

Please also see Fig. 7.1 and Fig. 7.2 on the following pages.

The following components are located on the back panel:

Female connector for print head cable

Purge button

Ink connector (a single one for a standard print head, two for a pigmented print head)

The nozzleplate is integrated in the front plate.

Apart from the difference of being a standard or a pigmented print head the heads are constructed

the same way.

Standard print heads are used for dye based inks. These inks don´t need to be circulated

wherefore one ink connector on the back panel of the print head is adequate.

When pigmented inks are used which are mixed with solid particles it is necessary to evenly

dispense these particles at any time. This is the reason why pigmented inks are processed by

using a pigmented ink supply unit. A pump makes sure that the pigmented ink is constantly

circulating between the print head and the ink supply unit. Therefore a pigmented print head has

two ink connectors. One for the ink feed line from ink pump to print head and one for the ink return

from print head to ink pump.

Nozzle plates are available in different nozzle sizes to apply the optimum amount of ink for the

various areas of application. The following nozzle sizes in micron are available:

80 µm

130 µm

180 µm

270 µm

350 µm

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