WO2016177721A1

WO2016177721A1 - Cleaning device for a roller, printing or coating system and a method for cleaning a roller

Info

Publication number: WO2016177721A1
Application number: PCT/EP2016/059876
Authority: WO
Inventors: Frank Theurer; Gerhard Palinkas
Original assignee: Harris & Bruno Europe GmbH
Priority date: 2015-05-03
Filing date: 2016-05-03
Publication date: 2016-11-10
Also published as: DE102015005535A1

Abstract

The invention relates to a cleaning device for a roller of a printing or coating system (10), in particular for an anilox roller (20), comprising an application unit (34) for applying a cleaning medium (36), which extends along a longitudinal extension of the anilox roller (22), wherein the application unit (34) comprises a wiper body (38) which can be pressed onto the roller (20) when soaked with the cleaning medium (36), wherein a housing is provided into which the application unit (34) is or can be inserted. According to the invention, the housing is part of a chambered doctor blade (22) of the printing or coating system (10), into which the application unit (34) is or can be inserted. The invention further relates to a printing or coating system (10) and a method for cleaning a roller.

Description

Cleaning device for a roller, printing or

Coating plant and method for cleaning a roller

PRIOR ART The invention relates to a cleaning device for a roll of a printing or coating plant, in particular for an anilox roll, having a

Application device for applying a cleaning medium, which extends along a longitudinal extension of the roller. Furthermore, the invention relates to a printing or coating unit and a method for cleaning a roller. EP 0 876 912 A1 describes a fluid supply device for a

Printing machine, via which both ink and cleaning liquid can be fed to an anilox roll or the like. For cleaning, instead of ink, a cleaning liquid, in particular water, is pumped through the same system. DE 196 19 656 A1 and DE 199 51 893 A1 disclose cleaning devices for a bearer ring, the cleaning devices each having at least one wiper body which can be pressed against a bearer ring.

Furthermore, from DE 199 58 087 A1 a cleaning device for a

Blanket cylinder known, the cleaning device can be used by a rail guide in a printing unit and zoom is zoomed to the blanket cylinder to clean the blanket cylinder.

From DE 10 2004 033 771 A1, a washing device for a post-impression printing cylinder is known, wherein the washing device has a cleaning roller which can be pressed against the printing cylinder. Furthermore, from DE 203 13 262 U1 a cleaning device for an anilox roller of a printing or coating plant known. The

Cleaning device is designed as a spraying device and in addition to a chamber doctor blade of the printing or coating unit

arranged doctoring system arranged.

In addition, DE 299 18 488 U1 discloses a cleaning device for an anilox roller of a printing or coating unit. The cleaning device is designed as an ultrasound system and arranged in a squeegee system formed in addition to a chamber doctor blade of the printing or coating unit. The object of the invention is in particular to provide a generic device which is compact and allows reliable deep cleaning of a roller, in particular an anilox roller. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

Advantages of the invention

The invention relates to a cleaning device for a roller of a printing or coating unit, in particular for an anilox roller, with an application device for applying a cleaning medium, which extends along a longitudinal extent of the roller, wherein the applicator has a wiper body, which is impregnated with the cleaning medium can be pressed against the roller, wherein a housing is provided, in which the applicator is inserted or used.

It is proposed that the housing part of a chambered doctor blade, in particular a chambered doctor blade to an application of paint and / or paint on the

Anilox roller, a printing or coating plant, in which the

Application device is used or usable. Because of that

Applicator has a wiper body, with the cleaning medium impregnated to the anilox roll can be pressed on the one hand, the detergent can be easily metered and on the other hand, the job done under light pressure, which in particular in anilox rollers, so rolls with small recesses, the cleaning improves. The roller, in particular the anilox roller rotates during the cleaning process.

If a housing is provided which receives the application device, cleaning medium losses and contamination of the environment are largely avoided. A particularly simple embodiment is obtained when the housing is part of a chambered doctor blade of a printing or coating unit, in which the application device is used or used. By means of the embodiment according to the invention, advantageously, a compact cleaning device can be realized which particularly advantageously enables reliable deep cleaning of a roller, in particular of an anilox roller, wherein preferably one

Contamination of an environment during cleaning can be largely prevented. It can be advantageous by the inventive design of the cleaning device a reliable deep cleaning of the roller, in particular of wells of a roller formed as an anilox roller, can be achieved to provide a particularly advantageous provision of a reliable dyeing and / or paint application by the roller, in particular due to a reliable Deep cleaning of the cells of the anilox roller. It can be advantageously achieved after a cleaning operation, a use of a total scoop volume of the individual wells of the anilox roller, as a result

Deep cleaning by means of the cleaning device a reliable removal of dye and / or paint residues, in particular of dried-on paint and / or lacquer residues, can be achieved in the individual wells of the anilox roller.

The features listed in the dependent claims advantageous refinements of the cleaning device according to the invention are possible. So the wiper body can simply be a sponge or a sponge-like body. It is particularly advantageous if the wiper body consists of a melanin resin.

A simple change of the wiper body succeeds when the wiper body is interchangeable fixed in the applicator device via a clamping device. Does the applicator means a feeding unit for feeding the

Cleaning medium, which extends along the wiper body, an automated detergent feed can be enabled.

The delivery unit may comprise at least one tubular body having openings along its longitudinal extent. In order to enable cleaning agent to be dispensed uniformly over the length of the feeding device to the wiping body, the openings may have an opening size whose opening sizes increase in a flow direction of the cleaning medium, in particular on a tubular feed body of the feed unit. The openings may have any embodiments that appear expedient to a person skilled in the art, such as an embodiment as circular openings, as elliptical openings, as oval openings, as polygonal openings or the like. Particularly advantageously, the openings have an oval, in particular a symmetrically oval, configuration , Preferably, in particular, the opening size of the oval openings changes in a flow direction of the

Cleaning medium. Preferably, in particular increases, a longitudinal axis of the oval openings changes in a flow direction of the cleaning medium. Advantageously, an opening size of a, in particular first, opening for dispensing cleaning medium to the wiping body in one

Medium inlet region of the supply device smaller than an opening size of a further opening, which has a greater distance to the medium inlet region than the, in particular first, opening. Preferably, in particular reduced, a distance of the individual openings changes relative to each other in a flow direction of the cleaning medium. Preferably, the openings, starting from the medium inlet region in a flow direction of the

Cleaning medium considered, a decreasing distance relative to each other. In particular, a distance between two directly consecutive openings, viewed from the medium inlet area in a flow direction of the cleaning medium, along a

Flow direction of the cleaning medium smaller, in particular compared to a distance between a, viewed from the medium inlet region in a flow direction of the cleaning medium, the first opening to the immediately following second opening. If the cleaning device is such that the cleaning medium can be supplied at intervals, the wiping body is given time to pick up the cleaning medium and distribute it as evenly as possible. The cleaning medium can then be applied evenly to the

Anilox roller are delivered.

If the cleaning device is to be operated independently of a printing or coating unit, the housing may be part of a chambered doctor blade of a separate cleaning machine into which the application device is inserted or used.

It is advantageous if the chamber doctor blade has a pressure metering system, via which a contact pressure of the wiping body to the roller to be cleaned is adjustable.

Does the cleaning device on a pumping device, with the

Cleaning medium can be conveyed to the wiper body, the

Cleaning medium flow can be optimized. Preferably, the pumping device is formed chemically resistant to the cleaning medium. Preferably, the pumping device, in particular components of the pumping device, which come into contact with the cleaning medium, formed of a stainless steel. However, it is also conceivable that the pumping device is formed of another material that appears appropriate to a person skilled in the art, which makes possible a chemical resistance to the cleaning medium. Prefers For example, valves, fittings, gaskets, containers, and / or other components that may come into contact with the cleaning medium are formed of a material that is chemically resistant to the cleaning medium.

The optimization succeeds further if the pump device has a control by means of which the cleaning medium is continuously and / or in the

Interval operation is eligible. Preferably, the controller is provided to realize a reliable supply of the cleaning medium and / or a reliable impregnation of the wiping body with the cleaning medium,

in particular to ensure. Preferably, the controller is provided to optimally determine a cleaning cycle. It is conceivable that the

Cleaning device comprises a sensor unit having a

Pollution degree of the roller can detect that the cleaning device has a control that a cleaning cycle after expiration of a

Usage time of the roller starts, or that the cleaning device has another, which appears appropriate to a professional control variable to control the cleaning cycle.

On the type of cleaning medium can be better addressed when the pumping device has at least one valve, by means of between

at least two different media to be conveyed is switchable. In a further embodiment, instead of a flexible wiper body, a roller or a device generating a spray can be provided.

In an advantageous embodiment, the cleaning agent causes a

Deep cleaning of the recesses.

The invention also relates to a printing or coating unit having at least one roller, a chamber doctor blade, in particular a chamber doctor blade for applying paint and / or paint to an anilox roller, and a

Cleaning device, in which an application device has a wiping body, which is impregnated with a cleaning medium to the roller pressed, wherein a housing is provided, in which the applicator is inserted or used and is characterized in that the housing is part of a

Chamber doctor blade, in particular a chamber doctor blade to an application of paint and / or ink on the anilox roller of the printing or coating plant, in which the applicator is used or can be used.

The invention further relates to an advantageous method for cleaning a roller, in particular a printing or coating unit, comprising the following steps:

Placing a wiper body on the roller,

Conveying a cleaning medium to the wiper body and

Turning the roller,

Remove the wiper body.

The method can be improved by performing prior to the step of

Placing the wiping body on the roller a wiper body having applicator device is inserted into a chambered doctor blade and that of

Wiper body is placed on the roller by means of the chamber doctor blade.

In particular, in a further, advantageous step, the contact pressure of the wiping body can be adjusted by means of the chamber doctor blade.

If the cleaning medium is conveyed at intervals, the

Distribute the cleaning medium in the wiper body and apply it evenly to the roller.

If it is possible to convey at least one second medium after the cleaning medium, this can be used to wash out the first cleaning medium and / or to stop a cleaning reaction. To keep the cleaning device clean, it can be provided that after the cleaning process, the parts leading the cleaning medium are blown out. The cleaning device according to the invention, the printing or coating unit according to the invention and / or the method according to the invention should / should not be limited to the application and embodiment described above. In particular, the invention can / can

Cleaning device, the printing or coating unit according to the invention and / or the inventive method for performing a function described herein have a number differing from a number of individual elements, components and units and method steps mentioned herein. drawings

Further advantages emerge from the following description of the drawing. In the drawings, two embodiments of the invention are shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

Fig. A schematically illustrated printing unit,

2 shows a first embodiment of an inventive

Cleaning device

FIG. 2 a shows an enlarged section along the line 11 a-1 a in FIG. 2,

3 shows a schematically illustrated printing unit with a chamber doctor blade, FIG. 4 shows a chamber doctor blade with an applied applicator, FIG. 5 shows a further exemplary embodiment with a pump device, and FIG. 6 shows a flow chart for a method according to the invention. Description of the embodiments

In the following description, the same parts are also occupied by different embodiments with the same reference numbers.

1 shows a printing unit 10 is shown, in which an object to be printed 12 is inserted and is performed in the direction of arrow 14. The object 12 is between an upper pressure roller 16, which typically has the pattern to be printed or a continuous rubberized surface, and a lower one

Counter pressure roller 18 clamped. At the upper pressure roller 15 is a

Anilox roller 20, which in turn is in contact with a pressure or coating medium feeding system, also known as chamber doctor blade 22 in contact.

The anilox roller 20, also called Aniloxwalze, is a storage medium that a necessary and defined amount of paint or paint during a

Coating process constantly provides. On the surface of the anilox roller 20, which may consist of ceramic or chromium, there are tiny small wells 24 or cells, indicated enlarged in Figure 2, which are engraved by means of various engraving process. At the non-recessed places remain webs.

The application of ink to the anilox roller 20 (FIG. 3) and thus the filling of the wells 24 takes place via the chamber doctor blade 22, which is usually placed in the 3- or 9 o'clock position on the anilox roller 20. This chambered doctor blade 22 comprises in

Essentially, a cavity 26 through which the paint or varnish is permanently pumped and circulated, and two so-called doctor blades 28, one for the Abrakelung the roll surface 30 (working doctor) and a second to

Sealing of the cavity 26 (sealing or closing squeegee). Furthermore, there are lateral seals 29 (Figure 4) which rest on the anilox roller 20 to prevent lateral leakage of the medium and to form a closed system. With the help of the upper doctor blade 28, the roller surface 30 is freed of supernatant paint, It remains only in the Wells defined by the scoop volume of the anilox roller 20 and thus controllable amount of dye or paint.

The anilox roller 20 transfers the ink to the next roller, the upper pressure roller 1 6 or a cliché in which the wells 24 always empty evenly. The emptying is never complete. There is a flushing and thus an exchange with each rotation of the anilox roller 20 within the wells 24. By the rotation of the anilox roller 20 and the so

accompanying uniform Farbauf- and color decrease the object 12 is supplied with a defined reproducible color or paint volume.

Crucial parameters for the transferred quantity are the creation volume, the shape of the wells 24, their geometry, the opening and the

Material components of the anilox roller 20 itself.

Depending on the materials used, the wells 24 of the anilox roller 20 settle by drying and / or contamination gradually, whereby the scoop volume of the anilox roller 20 is reduced. This process can be slowed by a regular rinsing and cleaning of the anilox roller 20. Nevertheless, over a period of time a deep cleaning of the

Anilox roller 20 required.

FIG. 2 shows a cleaning device 32, which is provided for cleaning an anilox roller 20 of a printing or coating unit 10. The cleaning device 32 has an applicator 34, with a

Cleaning medium 36 can be applied to the anilox roller 20 or applied. The applicator 34 extends along a

Longitudinal extent of the anilox roller 20. The cleaning medium 36 is preferably a cleaning fluid on a chemical and / or organic basis is used, which allows a defined sequence of the cleaning process. It is essential that the

Cleaning medium 36 is a deep cleaning of the recesses, so the

Nähnchnen 24 causes. The cleaning medium 36 penetrates into the wells 24, rinses paint or paint residues and dissolves them from the substrate or dissolves them chemically to the extent that they can escape from the well 24. Such a cleaning agent is known, for example, from EP 2 045 320 B1.

The applicator 34 further includes a wiper body 38 5, which can be soaked with the cleaning medium 36. The wiper body 38 is

so impregnated pressed to the anilox roller 20.

In the exemplary embodiment, the wiper body 38 is a sponge. It has been shown that a sponge made of a melanin resin is well suited, the

Apply cleaning medium 35. Instead of a sponge, however, spongy bodies are like

For example, a fleece or a wool body can be used. Furthermore, instead of using a rigid or flexible wiper body 38, it is possible to use a roller which would then also be impregnated with the cleaning medium 35.

The application device 34 has a clamping device 40, by means of which the wiper body 38 can be exchangeably mounted in the applicator 34.

As can also be seen in FIG. 2, a feed unit 42 for feeding the cleaning medium 36, which extends along the wiping body 38, is provided within the applicator 34. In the exemplary embodiment, the feed unit 42 comprises a tubular body 44 having openings 46 along its longitudinal extent.

In FIG. 2a, the tubular body 44 is in section along line 11a-11a

shown. Evident are the openings 46, which are distributed substantially uniformly over the longitudinal extent of the body 44. It can also be seen that the diameter 48 of the openings 46 in the flow direction 50 increases. With this measure, a decrease in the pressure in the flow direction 50 can be taken into account so as to ensure a uniform metering of cleaning liquid along the feed unit 42. The size of the tubular Body 44, the distance of the openings 46 to each other, the diameter 48 and the size change of the diameter 48 depend on the type of

Cleaning medium 36, the type of wiper body 38 and optionally the nature of the pressure medium from and can be determined empirically. The cleaning medium 36 is provided by a pump 52 of the feed unit 42, which in the embodiment of Figure 2 the

Cleaning medium 36 in the direction of the anilox roller 20, through the

Openings 46 feeds.

To give the cleaning medium 36 time, in the wiper body 38th

To distribute evenly, the pump 52 is driven at intervals and the cleaning medium 36 is supplied at intervals. The delivery rate per interval and the intervals between the intervals depend in particular on the cleaning medium 36 and the material of the wiping body 38 and can also be determined empirically. FIG. 4 shows a further exemplary embodiment of the invention

Cleaning device 32 shown. It can be seen that the

Application device 34 is received by a housing 54. In this case, the housing 54 is part of the chambered doctor blade 22 of the printing unit 10, as shown for example in Figures 1 and 3. The applicator 34 is inserted directly into the cavity 26 and secured in the embodiment of Figure 4 by clamping devices 56. The clamps 56 also clamp the doctor blades 28 firmly. This is an advantageous embodiment, but it can also be solved differently.

By executing with one or two clamping devices 56, the applicator 34 can be used very easily and removed again. It is conceivable that the application device 34 for insertion or

Remove one or more handles inserted into prepared openings (not shown). The applicator 34 is formed in the embodiment as a metallic rail. It receives the wiper body 38 in a longitudinal recess on which the clamping device 40 engages. Also, the feed unit 42 is in the

Housed longitudinal recess. Alternatively, a system of several mutually corresponding rails can be used. It is also possible within the scope of the invention, the feed unit 42 in the rail or the

Rail system to integrate directly. Furthermore, it is possible to

Application device 34 to produce a plastic, in which case the

Clamping device 40 and / or the feed unit 42 may be integrated or latching connected.

In an alternative form, the chamber doctor blade 22 shown in Figure 4 is not part of a printing unit 10 but part of a cleaning machine 58, which is shown in dashed lines and very schematically in Figure 4.

In many printing units 10, the chambered doctor blade 22 has one or more

Pressure dosing 60, by means of which the doctor blade 28 can be placed with predefined pressure on the anilox roller 20. Such

Pressure metering system 60 is shown in FIG. Via a hydro-pneumatic system 62, pressure is introduced via intermediate components into a cylinder chamber 64, which acts on the chamber doctor blade 22 via a piston or a piston rod 66. If, as shown in Figure 4, the wiper body 38 forms the front plane of the chambered doctor blade 22, this is defined by the pressure built up pressed against the anilox roller 20. Via the hydropneumatic system 62, this pressure is adjustable.

In a further exemplary embodiment, which is shown schematically in FIG. 5, the cleaning device 32 has a pumping device 68 with which the cleaning medium 36 is schematically represented via one or more

Lines 70 can be conveyed to the wiper body 38. In the pumping device 68, the pump 52 of Figure 3 may be included. The pump device 68 in turn has a controller 72, with which the cleaning medium 36 is continuously or in the interval mode can be conveyed. The controller 72 acts on the pump 52 accordingly. to

Programming is the controller 72 with an input option,

For example, with a connection for a computer or an input field equipped.

Furthermore, the pumping device 68 has at least one valve 74.

Various inputs 76 of the pump device 68 can be connected via the at least one valve 74 to the pump 52 and thus to the lines 70. For this purpose, the controller 72 controls the at least one valve 74

accordingly. In this way, the pumping device 68 can convey various media by the controller 72 switching the valve 74.

In addition to the cleaning medium 36, the pumping device 68 can promote further media. Thus, a water inlet 78 is provided. The water may be pumped into the conduits 70 and into the feed unit 42 for purging or in response to the purge medium 36. In addition, a compressed air inlet 80 is provided, by means of which both the lines 70 and the feed unit 42 can be blown. This ensures that no residues remain in the system. Instead of a wiping body 38, it is also possible to provide a spray-generating device 81 to apply the cleaning medium 36 defined on the anilox roller 20. Such a device 81 can

For example, have an ultrasonic fog head.

Although different embodiments are described here, it is clear that the person skilled in the art can exchange or combine the details and differences of the individual variants if he considers this to be appropriate. FIG. 6 shows a flow diagram of a method according to the invention for cleaning an anilox roller 20, in particular a printing or printing process

Coating plant 10 shown. If it is determined in a start step 82 that a cleaning process is to be initiated, the wiping body 38 is placed on the anilox roller 20 in a step 86, in order then to convey the cleaning medium 36 to the wiping body 38 and to rotate the anilox roller 20 in a step 90. In a subsequent step 98, the wiper body 38 is then removed again. The process is ended and it is returned to the start. If the applicator 34 is not yet anchored in the chambered doctor blade 22 is in a preparatory step 84 before the step 86 of placing the

Wiper body 38 on the anilox roller 20 a wiper body 38 having applicator 34 is inserted into the chambered doctor blade 22 to then the

Wiper body 38 by means of the chambered doctor blade 22 to put on the anilox roller 20. In particular, after the step 86, so if the wiper body 38 on the

Ratchet 20 is placed, is in a step 88, the contact pressure of the wiper body 38 by means of the chambered doctor blade 22 and the

Pressure dosing system 50 adapted. This step 88 may extend over the entire cleaning period. In a step 92, the cleaning medium 36 may be conveyed at intervals. The controller 72 acts on the pump 52 accordingly.

At the conclusion of the cleaning process, in a step 94, both the pumping device 68 and the lines 70 and the feed unit 42 are rinsed with water. For this purpose, the controller 72 controls the valve 74 accordingly. In a subsequent step 96, the pump device 68, the lines 70 and the feed unit 42 are blown through with compressed air. Steps 94 and 96 may also be performed after removal of the chambered doctor blade 22, but then the clean completion of the housing 54 together with the anilox roller 20 is no longer present, so that liquid could escape uncontrollably. Of course, further steps can be added and / or added if the system is to be expanded accordingly.

reference numeral

10 printing units

12 object

14 pressure roller

16 pressure roller

18 counter pressure roller

20 anilox roller

22 chambered doctor blade

24 wells

26 cavity

28 doctor blades

29 seals

30 roll surface

32 cleaning device

34 application device

36 cleaning medium

38 wiping body

40 clamping device

42 feeding unit

44 bodies

46 openings

48 diameters

50 flow direction

52 pump

54 housing

56 clamping devices

58 cleaning machine

60 pressure dosing system

62 system

64 cylinder space Piston rod pumping device lines

control

Valve

inputs

Water inlet compressed air inlet facility

start step

Preparation step step

step

Claims

claims

Cleaning device for a roller of a printing or

Coating unit (10), in particular for an anilox roller (22), with an application device (34) for applying a cleaning medium (36) which extends along a longitudinal extension of the roller (20), wherein the application device (34) comprises a wiper body (38). , which is impregnated with the cleaning medium (36) pressed against the roller (20), wherein a housing is provided, in which the applicator device (34) is inserted or used, characterized in that the

Housing part of a chambered doctor blade (22) of the printing or

Coating unit (10), in which the applicator (34) is inserted or used.

Cleaning device according to claim 1, characterized in that the wiper body (38) is a sponge or a sponge-like body.

Cleaning device according to one of the preceding claims, characterized in that the wiping body (38) consists of a

Melanin resin exists.

Cleaning device according to one of the preceding claims, characterized in that the wiping body (38) via a

Clamping device (40) replaceable in the applicator (34) is attached.

5. Cleaning device according to one of the preceding claims, characterized in that the application device (34) a

Feeding unit (42) for supplying the cleaning medium (36) which extends along the wiper body (38).

6. Cleaning device according to claim 5, characterized in that the feed unit (42) has at least one tubular body having openings (46) along its longitudinal extension.

7. Cleaning device according to claim 6, characterized in that the openings (46) have an opening size (48) and that the opening size (48) increases in a flow direction of the cleaning medium (36).

8. Cleaning device according to one of the preceding claims,

characterized in that the cleaning medium (36) can be supplied at intervals.

9. Cleaning device according to one of the preceding claims,

characterized in that the chambered doctor blade (22) a

Pressure metering system (60) via which a contact pressure of the wiper body (38) to the roller to be cleaned, in particular anilox roller (20) is adjustable.

10. Cleaning device according to one of the preceding claims,

characterized in that a pumping device is provided, with which the cleaning medium (36) to the wiper body (38) can be conveyed.

1 1. Cleaning device according to claim 10, characterized in that the pumping device comprises a control, by means of which the

Cleaning medium (36) is continuously and / or conveyed in the interval mode. 12. Cleaning device according to one of claims 10 or 11, characterized in that the pump device has at least one valve, by means of which at least two different media to be conveyed can be switched.

13. Cleaning device for a roller of a printing or

Coating unit (10), in particular for an anilox roller (20), with an application device (34) for applying a cleaning medium (36) which extends along a longitudinal extent of the roller (20), in particular according to one of the preceding claims, wherein the application device ( 34) instead of a wiper body (38) a

Moistening device (91), in particular a mist-forming device which applies the cleaning medium (36) in the form of a spray on the roller, in particular the anilox roller (20), wherein a housing is provided, in which the applicator (34) inserted or can be used, characterized in that the

Housing part of a chambered doctor blade (22) of the printing or

Coating unit (10), in which the applicator (34) is inserted or used.

14. Cleaning device according to one of the preceding claims, characterized in that the roller has recesses and that the cleaning medium causes a deep cleaning of the recesses.

15. printing or coating unit with at least one chamber doctor blade and a cleaning device according to one of the preceding claims, characterized in that the application device (34) in the

Chamber doctor blade (22) is inserted and / or used.

16. A method for cleaning a roller, in particular a printing or coating unit (10) according to one of claims 1 to 18,

characterized by the steps:

Placing a wiper body (38) on the anilox roller (20);

Conveying a cleaning medium (35) to the wiping body (38);

Remove the wiper body (38).

17. The method according to claim 1 6, characterized in that before the

Step of placing the wiper body (38) on the anilox roller (20), an application device (34) having the wiping body (38) is inserted into a chamber doctor blade (22) and that the wiping body (38) by means of the chamber doctor blade (22) on the anilox roller (22) is put on.

18. The method according to any one of claims 1 6 or 17, characterized

in that the contact pressure of the wiper body (38) is adjusted by means of the chamber doctor blade (22).

19. The method according to any one of claims 1 6 to 18, characterized in that the cleaning medium (36) is conveyed at intervals.

20. The method according to any one of claims 1 6 to 19, characterized in that after the cleaning medium (36) a second medium is conveyed. Method according to one of claims 16 to 20, characterized in that after the cleaning process, the cleaning medium (36) leading parts are blown out.