EP0919381B1 - Device for cleaning a cylinder in a printing machine - Google Patents

Description

The invention relates to a device for cleaning a cylinder in a Printing machine according to the preamble of claim 1. Further relates to the invention also a printing press with such a device.

Such devices allow self-cleaning of the cleaner in the Housing, which shortens the cleaning time for cleaning the cylinder. Evaporation of the cleaning agent can also occur in the pressroom and Drying out of the cleaner can be prevented. The self-cleaning of the cleaner takes place with a brush roller by placing it inside the closed Housing a cleaning fluid or water is supplied, which follows scraped together with the dirt from the bristles by a squeegee becomes. The cleaner can also be cleaned using blown air Soiling is blown out.

EP 0 659 560 B1 describes a cleaning device for cylinders from Printing machines described, the housing at least one additional Movable housing part that exposes the opening in the position and / or locked in the parking position.

Although this device allows the cleaner to self-clean, it is complex structure and prone to failure. The movable housing part must be in Guided tours. The guided tours can be fixed by Jammed ink residues, paper dust or the like jam. This is a problem especially in the case of very precisely manufactured guides, which are simultaneously a should have a sealing function. But also separate from the guided tours Sealing measures to seal the parts mean an increased Production expense. The opening and closing of the opening via elastic springs is also unsafe and can e.g. B. with an incomplete opening, to a Damage to the cylinder surface to be cleaned and the device.

Starting from the prior art, the object of the invention is a simple one constructed and safely functioning device for cleaning a cylinder create.

According to the invention, the object is achieved by a device with the features of Claim 1 and solved by a printing press with the features of claim 10. Further features are contained in the subclaims.

The device for cleaning a cylinder in a printing press, with one cleaner can be switched on and off, especially a cleaning roller, which is arranged in a housing with an opening, is characterized by that the housing by moving it relative to a cover Device is designed closable, the opening through the device is brought into cover with the cover.

It is essential to the invention that the housing by movement, in particular Rotation, the same is closable, with closing both a completely sealing closure as well as an incomplete sealing sufficient splash protection function is understood. In the event that the housing through a rotary or pivoting movement is closed, z. B. the size of the Angle by which the opening from a first position towards the cylinder in a second position facing away from the cylinder is pivoted or rotated, according to the particular design and size of the opening. Definitely there must be a safe splash guard.

It has been recognized that a closable device is not a housing additional movable housing part and certainly not several additional movable housing parts, as proposed in EP 0 659 560 B1, are required become. Based on this knowledge, many advantages can be achieved.

Simply constructed devices can be used to move the housing, so that the manufacturing effort is kept low with absolutely reliable function. As Cover against which the opening of the housing is directed can part already contained in the machine, e.g. a machine wall, or a specially designed part. The housing and its opening can rotated, pivoted or moved relative to the cover, the Opening is directed towards the cover. For example, the housing are shifted in a straight line along a tangential plane of the cylinder, wherein the opening of a cover extending in the tangential plane is covered.

An advantageous embodiment can include that the opening in a Position of the cleaner towards the cylinder and in a parking position in the is essentially directed away from the cylinder. In this way, an optimal one Splash protection of the cylinder and in particular one if necessary on it led substrate before the self-cleaning process of the cleaner detergent spraying in the housing during printing guaranteed.

A preferred embodiment includes that the opening in the parking position of the cleaner against one arranged below the housing and here as the Cover acting tub is directed. Taking a tub is a matter of course also understood a drain surface or a catch basin. Such elements are often present anyway and serve to protect those under the cleaner Machine parts in front of dripping cleaning agents and for storing them and repatriation. It is particularly favorable in this embodiment that this is in the self-cleaning process of the cleaner on the inside walls of the housing any accumulated cleaning agents run off the walls into the tub can. The tub and the housing can be designed so that they are coordinated be that effective splash protection in the on and off position, d. H. in the Cylinder cleaning and self-cleaning is given.

A stationary, e.g. B. tub attached to the machine frame, can extend over the length extend the on and off, so that in any position of the cleaner Drip protection is available.

In another embodiment, the tub can be movable, the tub with the housing, e.g. B. is connected via a gearbox, so that the Trough with an on and off movement of the housing is carried. Advantageous here is that the housing z. B. filled with used detergents The tub can cover better, so that the evaporation of the cleaning agent the tub is reduced. The edges of the tub can be in the parking position Cleaners overlap the outer wall of the housing in the area of the opening, so that a good sealing is achieved.

The housing can about a to the axis of rotation of the cylinder to be cleaned parallel axis can be rotated or pivoted. Because of this flexibility The housing allows the device to be installed in a very confined space accommodate. Particularly favorable installation conditions result if that Housing rotatable about an axis of rotation of a roller-shaped cleaner is trained.

Another embodiment involves moving the housing Forcibly set up the housing when the cleaner is turned off closes and opens with the adjusting movement of the cleaner. An advantage of this Embodiment is that in addition to an actuator for turning on and off the cleaner no further drive to close the housing, e.g. B. for whose rotation is necessary. Deviating from that in certain Applications another drive for closing the housing and z. B. a coordinated control of the two drives can be provided. As Suitable drives for starting and stopping the cleaner and for Closing the housing are electric motors, hydraulic cylinders or preferably pneumatic cylinders can be used.

The device moving the housing can forcibly use a gear Coupling the closing or opening of the housing to the connection or Parking movement, preferably in the form of a coupling gear. It is particularly favorable to design the coupling gear as a Cross slider-crank mechanism. Such a cross slide crank gear comprises two Adjacent joints designed as thrust joints. The sliding joints can e.g. B. in the form of a first groove and in this engaging first sliding block and a second groove and a second groove block engaging in the latter be, the first groove of the on and off movement of the cleaner and the Housing and the second groove serves to rotate the housing. Such a Trained groove cam gear guarantees maximum functional reliability simplest structure. Placing the cleaner on the cylinder works in all Cases forced opening of the housing, so that jamming practical is excluded. The fact that the grooves or slots are rectilinear and are introduced into the frame, the manufacturing effort can be minimized. The T-nuts can be cuboid or similar to the known T-nuts or preferably round, e.g. B. be designed as a pin or bolt. The fact that a such gearbox is assigned to the housing on both sides, the Stability and especially requirements Lower torsional rigidity of the housing so that the housing in Lightweight construction can be formed.

Another embodiment may include the housing and the cleaner are coaxially rotatable. This measure enables a subsequent Installation of the device in machines with an unfavorable installation space situation and contributes to the simplification of the housing structure. This can be implemented cheaply Embodiment in which the first sliding block is arranged on the housing and one the axis of rotation of the pin, in particular a roller-shaped cleaner encloses. A reduction in cleaning time can in many cases, e.g. B. at the Cleaning a blanket cylinder, an impression cylinder or a Sheet transfer drum in an offset printing machine, by using a Reach brush roller as the cleaner. This is driven by rotation and can be in oscillate sideways. With the same direction of rotation of the cylinder and the cleaning roller results in an opposite relative movement of the Lateral surface of the cleaning roller, e.g. B. the bristles or instead of this one fleece-like or textile cover, and the surface to be cleaned Cylinders with a particularly thorough cleaning effect. The brush roller can within the housing at least one, loose or separate from the housing arranged cleaning element to be assigned. This can preferably be a but a conventional squeegee dipping into the bristles of the brush Squeegee or a detergent supply. A spray squeegee has among other things the advantage that a cleaning fluid and / or water is not only leakproof applied to the bristles standing surface and applied by the Roll rotation is thrown back into the housing, but in deeper lying bristle areas is injected into the brush. A detailed description the mode of operation of the known spray doctor and others, with their The use of associated advantages, in particular the flushing effect, are in the DE 39 09 819 A1 (US 5,035,178), which in this regard as Reference documents should be included. Beyond that however recognized that with such a spray doctor next to a thorough one Cleaning the cylinder a very effective self-cleaning of a brush roller, especially within an essentially closed housing, can be achieved. When cleaning the brush roller, there is a deep one Penetration of the liquids in the bristle stock cheap, so close and on the the bristle-bearing brush roller core detached impurities become. With conventional spray nozzles, the cleaning fluid, especially at bristles very close together, often again due to centrifugal force flung away before it reaches the deep-lying bristle areas. Through the separate arrangement of the cleaning elements, z. B. by a Attachment to the frame of the machine can be a particularly smooth turning of the housing are made possible. The cleaning elements can in many cases also be arranged or attached to the housing.

The invention is more preferred below with reference to the drawing Embodiments described.

Fig. 1

Eine schematische Darstellung einer erfindungsgemäßen Vorrichtung mit einem verschiebbaren Gehäuse,

Fig. 2

eine schematische Darstellung einer anderen erfindungsgemäßen Vorrichtung mit einem drehbaren Gehäuse in Reinigungsposition,

Fig. 3

eine schematische Darstellung der Vorrichtung aus Fig. 2 in Ruheposition,

Fig. 4

eine schematische Darstellung der Vorrichtung aus Fig. 2 in Vorderansicht,

Fig. 5

eine schematische Darstellung einer weiteren erfindungsgemäßen Vorrichtung in Reinigungsposition,

Fig. 6

eine schematische Darstellung der Vorrichtung aus Fig. 5 in Ruheposition,

Fig. 7

ein Getriebeschema eines Getriebes der erfindungsgemäßen Vorrichtung,

Fig. 8

eine Explosionsdarstellung der Vorrichtung aus den Fig. 5 und Fig. 6
und

Fig. 9

eine Rotationsdruckmaschine mit einer erfindungsgemäßen Vorrichtung.

The drawings show:

Fig. 1

A schematic representation of a device according to the invention with a displaceable housing,

Fig. 2

1 shows a schematic representation of another device according to the invention with a rotatable housing in the cleaning position,

Fig. 3

3 shows a schematic illustration of the device from FIG. 2 in the rest position,

Fig. 4

2 shows a schematic illustration of the device from FIG. 2 in front view,

Fig. 5

1 shows a schematic representation of a further device according to the invention in the cleaning position,

Fig. 6

5 shows a schematic representation of the device from FIG. 5 in the rest position,

Fig. 7

2 shows a transmission diagram of a transmission of the device according to the invention,

Fig. 8

5 shows an exploded view of the device from FIGS. 5 and 6
and

Fig. 9

a rotary printing press with a device according to the invention.

Corresponding parts are given the same reference numerals in the figures Mistake.

In Figure 1 is a device for cleaning a cylinder of a printing press shown. The cleaner 3 is opened and closed as a pressure element developable cloth and arranged in the housing 2. The housing 2 can be closed by means of the device 7, 7.1, 7.2 relative to the machine arranged cover 4 is moved so that it covers the opening 20. The Movement is carried out by a guide 7.2, z. B. the linear guide shown and is driven by the actuator 7. The actuator 7 moves the housing 2 via the gear 7.1, which is designed as a rack and pinion gear as shown can be. The actuator 7 can be an electric motor. In this embodiment there is the on and off movement of the cleaner 3 and with this the movement of the housing 2 against the cover 4 in the direction perpendicular to the cylinder 1 radial direction of action of the cleaner 3 and perpendicular to the axis of rotation 34 extending tangential direction. The movement of the housing to be locked 2 can also in the direction of the axis of rotation 34 along the lateral surface of the Cylinder 1 take place.

A preferred further device according to the invention is shown in FIG is in the switch-on or cleaning position in which the as Brush roller trained cleaner 3 to the outer surface of the cylinder 1 with Contact is employed. The housing 2 encloses the cleaner 3 except for the opening 20 completely in the circumferential direction of the cleaner 3, d. H. at least after three stones out. For the cleaning elements 5, 6 arranged separately from the housing 2 and the Pins 11 can have recesses in any side walls of the Housing 2 be introduced. The cleaning elements 5, 6 comprise at least a doctor blade 5 and a feed device 6 for a cleaning fluid and / or Water. The housing 2 can also be designed to be open on one or both sides. A waiver of side walls is particularly easy if that Housing 2 is sufficiently wide than the cleaner 3, so that the housing 2 z. B. extends far beyond the end faces 22 and the cleaner dries out 3 and cleaning agent emissions are not important. Through that In this case, cleaner 3 is sufficiently protruding on the side of the housing 2 splashing the cleaning fluid or water out of the side Housing 2 prevented. The cleaning elements 5, 6 can be as the doctor blade 5 and the spray doctor blade 6 may be formed. With the cleaner 3, the cylinder 1 is under Supply of a cleaning fluid and / or water via at least one of the Spray squeegee 6 cleaned. The cleaning cycle can have multiple cleaning cycles comprise, the cylinder 1 in a first cleaning cycle with a Cleaning fluid is washed and in a subsequent second Cleaning cycle can be washed with water. After the first Cleaning cycle for cleaning the cylinder 1 using the Cleaning fluids can be the self-cleaning of the cleaner 3, for which the Cleaner 3 is preferably supplied exclusively with water, so that the cleaner 3 has a low cleaning fluid content if it is used in the subsequent second cleaning cycle for cleaning cylinder 1 by rinsing it Water is used. Preferably one of two spray doctor blades 6 is used Supply of the cleaning fluid and the other spray doctor 6 of the supply of the Water. Seen in the direction of rotation of the cleaner 3, the spray doctor 6 is one another squeegee 5 upstream. This arrangement ensures that the Soiling from the squeegee 5 has essentially been wiped off, if fresh cleaning fluid or water through the spray squeegee 6 onto the cleaner 3 or is introduced into the bristle trim. The spray squeegees 6 are as hollow profile-shaped beams, the longitudinal channel 23 in Branch branches opening outlets 24, which preferably are aligned radially with respect to the cleaner 3. The cleaning elements 5, 6 can be a polygonal, e.g. B. trapezoidal, cross section or be round or tubular. Depending on the nature of the bristles 33 and The arrangement of the cleaning elements 5, 6 must be optimal Cleaning effect most favorable geometry can be selected. Furthermore, a Cleaning element 5, 6 can also be designed as an air knife, which is deep in the Bristle stuck impurities, e.g. B. paper particles, blows out. A with the cleaning fluid, the water or the blown air Cleaning element 5, 6 can of course instead of one in the cleaner 3rd penetrating doctor blade 5 also as a contactless to the cleaner 3 working Feed, e.g. B. nozzle bar, be formed.

In Figure 3, the device of Figure 2 is in the parking position, i. H. without contact of the cleaner 3 to the cylinder 1, shown, the cleaner 3 in the parking position rests or is cleaned. Seen from the side, is in this position the squeegee 6 in the first and the squeegee 5 in the second quadrant, so that the Self-cleaning process stripped contaminants essentially against the inner housing walls and possibly partly in the tub, but not from the Opening 20 are thrown out. In a device with the Housing 2 separate cleaning elements 5, 6 is the advantageous described Location of the cleaning elements 5, 6, as shown in Figure 2, also in the position of employment given.

In the self-cleaning process of the cleaner 3, this is by one of the drive the printing press separate drive (Fig. 7) driven in rotation, so that the Cleaner 3 can be cleaned while the press is printing. In doing so the cleaner 3 the cleaning fluid and / or preferably water depending on Requirement individually or together via feeders, e.g. B. the spray squeegees 6, fed. Preferably - as seen in the direction of rotation of the cleaner - first Feeding the water and then feeding the cleaning fluid arranged. In the self-cleaning process, the cleaner 3 preferably rotates in the sense of rotation shown. One or multiple reversal of the direction of rotation can also be useful in certain cases. As a result of the rotation, color and paper residues through the doctor blade 5 and the spray doctor blade 6 from the bristles stripped and by the after relief in the starting position flinging back bristles.

In Figure 4, the device shown in Figure 2 is a front view shown cut. The tub was not for better clarity shown. It is shown here that the housing 2, e.g. B. on frame 25, arranged cleaning elements 5, 6 through lateral recesses 26 with panels 31, z. B. for Rotation axis of the laterally oscillating cleaner 3 and the housing 2 coaxially running circular arc-shaped slots, through the side wall 21 in the Housing interior can be inserted. In many cases, one or both Side walls 21 are omitted, so that such recesses 26 are not are necessary. By means of the pump 29, the reservoir 28 becomes water or Cleaning fluid through line 27 to the spray knife Cleaning element 6 performed.

A further device according to the invention is shown in FIGS Position (Figure 5) and parking position (Figure 6) shown, which is different from the previously described differs in that the Cleaning elements 5, 6 are arranged on the housing 2 and when it rotates be moved with. In this case, it is expedient for the housing 2 to be stable train and store and the lines 27 of the cleaning fluid and / or Water supply to the shown spray doctor 6 or nozzle strips as flexible Train hoses. On the other hand, the device differs in that Fixed arrangement of the tub 4 from the device described above. The Trough 4 extends over the entire travel range, so that both in the Starting position and in the parking position running out of the housing 2 Liquid is collected safely. The tub 4 can be inclined and one Have drain 30. The cleaning elements 5, 6 are round, whereby a particularly uniform wiping of the bristles 33 is achieved and on Accumulation of dirt behind corners and edges is avoided. In the Design of the housing 2 is to be ensured that that shown in Figure 5 The position of the housing wall below, which forms a concave shell, is not can accumulate so much liquid that the cleaner 3 is immersed in it and injected. By appropriately chamfering these wall surfaces as well Processes can be easily ensured that the liquid is also in this position runs out of the housing 2 into the tub 4.

FIG. 7 shows a transmission diagram of a coupling transmission and in particular one Cross-slide crank mechanism 9 shown. The housing 2 forms the coupling of the Linkage. The first thrust joint 10, 14 is from the first sliding block 10 and the first groove 14 and the second thrust joint 12, 15 from the second sliding block 12 and the second groove 15 is formed. The coupling or the housing 2 that forms it rotatable via the rotary joints 10.1, 12.1 with the sliding joints 10, 14; 12, 15 connected. The joints 12, 12.1, 15; 10, 10.1, 14 can also be used as rotary and Push joints are designed. A pushing movement of the first push joint 10, 14 has a push movement of the second push joint 12, 15 and a rotational movement of the housing 2 forming the coupling results. The Angle β between the thrust directions 17, 18 can be not equal to 90 ° (oblique angle) his. The angle is preferably 90 ° (at right angles) when perpendicular to one another guided sliding blocks 10, 12.

In Figure 8, the housing 2 with the cleaner 3 arranged therein and the the housing 2 relative to the cover (not shown), in particular the tub, moving device 7, 9 of the devices of Figures 2 to 6 using the example the device of FIGS. 5 and 6. The device 7, 9 comprises a attach the cleaner 3 together with the housing 2 to the cylinder (not shown) and shut-off actuator 7 and two gears 9. The gears correspond the principle shown in Figure 7. The actuator 7 can be an electric motor or be a hydraulic cylinder. The pneumatic cylinder shown is preferably used, which double acting, d. H. pneumatically adjustable in both directions, can be trained. The actuator 7 acts as at least one of the two Housing pin formed first slot nuts 10. The first slot nut 10 can of includes a socket or the fork shown and be rotatable in the enclosure. In addition to the actuator 7 is a further drive 8, which from Printing machine drive works independently and be designed as an electric motor can exist. The cleaner 3 is, for. B. via a gear 19, from the drive 8th driven by rotation. The lateral oscillation movement 43 of the cleaner 3 can also are driven by the drive 8 via a further gear, not shown. On one or preferably both sides of the housing 2 is that of the device 7, 9 associated cross slide crank gear 9 arranged. Furthermore, the transmission as another type of gear can be designed. The fixed arrangement of one would be possible Gear on the housing pin 10. The gear can on a rack with roll this combing, so that when moving on and off by Rack and pinion gear causes the housing to rotate. Particularly cheap in The construction is the grooved cam gear shown. The sliding blocks 10, 12 are on Housing 2 attached. The slot nuts 10, 12 can be out of round, z. B. cuboid or be designed as T-slot nuts, and rotatably mounted in the housing 2. At the in Figure 8 preferred embodiment shown, the slot nuts 10, 12 are round, d. H. with a circular cross section. The first sliding block 10 forms both the housing pin as well as a socket through which the one stored in it Pin 11 of the cleaner 3 is passed. The first slot nut 10 is on the housing 2 arranged and encloses the one forming the axis of rotation 35 of the cleaner 3 Pin 11. In this way, the cleaner 3 and the housing 2 are mounted coaxially. The first sliding block 10 and the cleaner 3 or its pin 11 can also also be mounted on mutually offset axes of rotation or swivel. The second Sliding block 12 is designed as a bolt. The slot nuts 10, 12 can be as shown be designed as sliding blocks or as rollers. The sliding blocks 10, 12 are around Distance e is arranged offset from one another, the second sliding block 12 around the Distance e is arranged eccentrically to the axis of rotation of the housing 2. The Assignment of the slot nuts 10, 12 and the grooves 14, 15 to the housing 2 or Frame 13 can be made differently, each with two elements - two grooves or two slot nuts or one slot and one slot nut - on the housing 2 and on the frame 13 are arranged. The arrangement of the slot nuts shown is structurally advantageous 10, 12 on the housing 2 and the grooves 14, 15 on the frame 13. The grooves 14, 15 are arranged in such a way that their directions of thrust 17, 18 corresponding center lines or their extensions, especially in the right Angle, cut at a point. In the event that a groove 14; 15 in the frame 13 and the other groove 14; 15 in the housing 2, for. B. the side wall 21 is introduced, the projections of the center lines intersect. A gear 9 designed in this way can be assigned to the housing 2 on one side or preferably on both sides. The grooves 14, 15 can be curved or preferably as linear guides be trained. The gear 9 thus consists of two housing 2 assigned rotary and sliding joints 10, 14; 12, 15, the first turning and Slide joint 10, 14 a displacement of the housing 2 in the on and off direction 32 releases and blocks perpendicular to this and the second rotary and thrust joint 12, 15 blocks a displacement of the housing 2 in the starting and stopping directions 32 and releases perpendicular to it. The joints 10, 14; 12, 15 are arranged such so that when the housing 2 is displaced in the first joint 10, 14 a displacement of the housing 2 guided in the second joint 12, 15 is inevitable and as a result, rotation of the housing 2 about the first joint 10, 14 he follows. In the present example, the joints 10, 14; 12, 15 as turning and Shear joints trained. The housing 2 encloses the cleaner 3 out of five Pages. The cleaner 3 is designed as a laterally oscillating brush roller.

FIG. 9 shows a sheet-fed offset printing machine 36 with printing units 37 and one Sheet transfer device 38, in particular a turning device, shown. Each printing unit 37 comprises a printing form cylinder 39, a blanket cylinder 1 and an impression cylinder 40. The sheet transfer device 38 comprises at least one drum 41. The device 42 according to the invention can be one or several printing unit cylinders 1, 39, 40 or sheet transfer drums 41 to their Cleaning assigned. The device is preferably one Blanket cylinder 1 and / or with this blanket cylinder 1 directly cooperating impression cylinder 40 assigned. A multiple cylinder 1, 40 associated device 42 can optionally on the cylinder 1; 40 adjustable and be designed to be pivotable to the cylinders.

LIST OF REFERENCE NUMBERS

1

Blanket cylinder

2

casing

3

cleanser

4

cover

5, 6

cleaning element

7

actuator

7.1

transmission

7.2

guide

8th

drive

9

transmission

10

first slot nut

10.1

swivel

11

spigot

12

second slot nut

12.1

swivel

13

frame

14

first groove

15

second groove

16 17, 18

thrust direction

19

transmission

20

opening

21

Side wall

22

face

23

longitudinal channel

24

diversion

25

frame

26

recess

27

management

28

reservoir

29

pump

30

procedure

31

cover

32

direction

33

bristles

34, 35

axis of rotation

36

press

37

printing unit

38

Arc transfer device

39

Plate cylinder

40

Impression cylinder

41

drums

42

contraption

43

Oscillating movement

e

distance

β

angle

Claims (10)

1. Device for cleaning a cylinder (1) in a printing press (36) having a cleaner (3), in particular a cleaning roller (2), engageable with and disengageable from the cylinder (1) and arranged in a housing (2) having an opening (20),
   characterized in that the housing (2) is constructed to be closable by a device (7, 7.1, 7.2, 9) moving the housing (2) relative to a covering (4), with the opening (20) being moved by the device (7, 7.1, 7.2, 9) in such a way that the opening (20) is covered by the covering (4).
2. Device according to claim 1,
   characterized in that, in an engaged position of the cleaner (3), the opening (20) is directed towards the cylinder (1) and in a disengaged position of the cleaner (3), the opening (20) is substantially directed away from the cylinder (1).
3. Device according to claim 2,
   characterized in that, in the disengaged position of the cleaner (3), the opening (20) is directed towards a trough (4) arranged below the housing (2) and acting as the covering (4).
4. Device according to claim 3,
   characterized in that the trough (4) is connected to the housing (2) in such a way that, upon an engaging or disengaging movement of the housing (2) with respect to the cylinder (1), the trough (4) is entrained with the housing (2).
5. Device according to one of claims 1 to 4,
   characterized in that the housing (2) is constructed to be rotatable or swivellable about an axis (35) parallel with the axis of rotation (34) of the cylinder (1), in particular about an axis of rotation (35) of a roller-shaped cleaner (3).
6. Device according to claim 5,
   characterized in that the housing (2) and the cleaner (3) are rotatably supported in a coaxial manner.
7. Device according to one of claims 1 to 6,
   characterized in that the device (7, 7.1, 7.2, 9) forcibly closes the housing (2) upon a disengaging movement of the cleaner (3) and forcibly opens the housing (2) upon an engaging movement of the cleaner (3).
8. Device according to claim 7,
   characterized in that the device (7, 9) comprises a gearing mechanism (9), in particular a cross-slider crank gearing mechanism, forcibly effecting the opening and closing of the housing (2) together with the engaging and disengaging movement of the cleaner (3).
9. Device according to one of claims 1 to 8,
   characterized in that the cleaner (3) is constructed as a brush roller to which at least one cleaning element (5, 6), arranged in particular separate from the housing (2) and in particular formed as a spray blade (6) dipping into the bristles of the brush roller (3), is assigned within the housing.
10. Printing press, in particular sheet-fed offset printing press, having a device according to one of claims I to 9.

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