HK1061827B - Devices for adjusting the contact pressure of an adjustably mounted cylinder - Google Patents

Description

Device for adjusting the contact pressure of an adjustably mounted roller

Technical Field

The invention relates to a device for adjusting the contact pressure of an adjustably mounted roller.

Background

In a conventional printing press, for example a web-fed rotary printing press, a plurality of rollers, in particular inking rollers, are provided for transferring the ink from the ink cartridges to the plate cylinder. The ink attached to the plate cylinder is metered by the inking roller, so that the transfer of ink as a standard film of a certain thickness is achieved. Compensation for disturbances such as speed variations and rotational vibrations can thus be achieved.

In addition, dampening units are provided in the printing press, which dampening units serve to transfer dampening agent, such as water, to the printing unit.

The roller pairs are usually formed by rollers which interact with one another, at least one of the rollers having a cylinder surface formed from an elastic material, so that the cylinder surface can be deformed at least slightly as a function of the contact pressure of the opposing roller. A contact range extending straight between the rollers is formed as a result of the elastic deformation of the roller surface, which contact range is referred to as a contact zone. The width of the contact belt can be changed by adjusting the bonding pressure between the rollers. Wherein the width of the contact strip will have a large influence on the printing result. For example, if the contact band is too narrow in the printing unit, sufficient ink cannot be transferred, whereas if the contact band is too wide, the elastic roller would be damaged by the pressing work generated therein.

In order to always be able to correctly adjust the width of the contact band, in particular in dependence on the operating conditions, such as the temperature of the printing press and its degree of wear, the arrangement of the rollers must be adjustable so that the rollers are pressed in the direction of the opposite roller with an adjustable force by means of an actuator. When the correct abutment pressure is achieved between the two rollers, the fixing means are controlled to achieve a relative fixing of the first roller with respect to the second roller, so that the abutment pressure can be maintained continuously.

DE 19719305 a1 discloses a device for adjusting the contact pressure between two rollers. In the described bearing arrangement, the adjustably mounted roller is pressed against the opposite roller by a spring supported on the machine frame of the printing machine. A certain contact pressure between the two rollers is thus always established according to the selected spring characteristic. The roller is fixed in the pressing position by a clamping mechanism with a clamping rod and a clamping plate, and a roller shaft of the clamping mechanism is fixed on a frame of the printing machine through friction fit.

DE 19919733 a1 discloses a device for semi-automatic adjustment of a roller, in which the adjustably mounted roller is fixed to a roller block, which is arranged on a frame-shaped support, which is fixedly mounted on a machine frame. The roller holder and the frame-shaped support are movable relative to each other and are connected to each other by means of elastic members. The elastic part has certain prestress, so that the roller which is adjustably arranged on the roller seat is pressed on the opposite roller in a certain pressing manner. The roller holder is clamped to the frame-shaped support by a friction fit by the advance of the stop bolt.

DE 42316731 discloses a device for adjusting a roller, in which the roller is first moved radially by means of a pressure chamber and then fixed.

A device for pressing a sleeve of a printing cylinder is described in DD 64064. No indication is given about the steering of the rolls.

DE 10001582 a1 discloses a roller which is adjusted by means of two hydraulic cylinders.

Disclosure of Invention

The invention aims to provide a device for adjusting the joint pressure of an adjustable roller.

The technical scheme for realizing the aim of the invention is as follows:

a device for adjusting a roller, comprising at least one actuator, wherein the actuator has a pressure chamber which is acted upon by a pressure medium, wherein the actuator is formed by a pressure-resistant membrane which rests in a gap against a component wall of a roller seat and a component wall of a frame-shaped carrier in such a way that the component wall of the frame-shaped carrier and the membrane form at least one pressure chamber at a fastening section and are simultaneously pressure-resistant connected to one another.

A device for adjusting a roller, having at least one actuator, wherein the actuator has a pressure chamber which is acted upon by a pressure medium, wherein a plurality of pressure chambers are arranged in the circumferential direction of the roller, wherein the actuator is formed by a pressure-resistant membrane which rests in a gap against a component wall of a frame-shaped carrier and a component wall of a roller holder in such a way that the component wall of the roller holder and the membrane form at least one pressure chamber at a fastening section and are at the same time pressure-resistant connected to one another.

A device for adjusting a roller, having at least one actuator, wherein the actuator has a pressure chamber which is acted upon by a pressure medium, wherein the actuator is in the form of a pressure hose, the wall of which forms the pressure chamber and which is arranged in a gap between a roller seat and a frame support, wherein a plurality of pressure chambers acting in different directions are arranged in the circumferential direction of the roller.

A device for adjusting rollers, comprising at least one actuator, wherein the actuator has a pressure chamber which is acted upon by a pressure medium, wherein the actuator is in the form of a pressure hose, the walls of which form the pressure chamber and which are arranged in a gap between a roller block and a frame support, wherein at least two pressure chambers are controlled independently of one another.

A device for adjusting a roller, having at least one actuator, wherein the actuator has a pressure chamber which is acted upon by a pressure medium, wherein the actuator is in the form of a pressure hose, the wall of which forms the pressure chamber and which is arranged in a gap between a roller seat and a frame support, wherein the height of the pressure chamber in the radial direction of the roller is smaller than the width of the pressure chamber in the axial direction of the roller and/or the length of the pressure chamber in the circumferential direction of the roller.

The advantage of the fastening device is, in particular, that it is particularly compact and can be realized with little space. This is achieved by the adjustable member being adjusted by the plurality of lamination packs being clamped in friction fit with one another. The frictional forces required for fastening are distributed over a plurality of friction surfaces between the sheet metal parts by the sequential arrangement of a plurality of such sheet metal parts. By clamping the sequentially arranged lamination elements, the clamping forces act on all friction surfaces in each case.

Corresponding disk clutches are known, for example, from disk clutches for frictional connection to a rotatably arranged shaft. The fastening device according to the invention differs from known laminated part clutches in that the laminated parts are relatively displaceable at least in one direction and are then fastened in a manner that is dependent on the play between the components of the fastening device within a certain adjustment range. The adjustment movement is not carried out in a pivoting or rotating manner in the lamination clutch, but in a translational manner in a plane which forms the orientation of the friction surfaces of the lamination elements.

As clamping device, in principle, all parts or structures can be used which clamp the lamination stack to one another with the addition of sufficient pressing force. It is particularly advantageous to form the clamping device as a prestressed spring element. When the fixing device is at the fixing position, a large elastic force is applied to the laminated piece by a prestress spring piece, so that the laminated pieces are stably fixed in a mutual friction fit mode. It is thus possible to avoid the fastening device being accidentally released, for example as a result of a power failure, such as occurs most fearly in conventional clamping devices. In order to be able to release the clamping device in order to adjust the components of the fastening device, an adjusting element is provided on the fastening device in this embodiment, with which an adjustment of the spring element can be effected, so that the lamination element is decompressed and thus a relative displacement of the lamination element is effected.

In principle, the control of the spring element can be effected by any drive means, for example an electrical, hydraulic or pneumatic system. It is particularly advantageous if the adjustment element is a rod movably arranged in the pressure chamber. By loading the pressure chamber with a pressure medium, such as pressurized air or hydraulic fluid, the stem will be moved against the spring force of the spring element, so that the lamination element is decompressed.

The advantages achieved by the invention are in particular the compactness which can be achieved with the proposed design. As in the prior art, the rollers are fixed on roller blocks which are arranged movably on a frame-shaped support. The frame support is either fixedly arranged on the machine frame of the printing press or on a corresponding adjusting device, which can adjust, for example, the clutch pressure of the rollers arranged on the roller base corresponding to the corresponding rollers.

A recess is provided on the roller block or on the frame-shaped carrier, into which recess a section of the frame-shaped carrier or of the roller block engages. The size of the section or the recess is selected such that a gap is formed between the recess and the section, said gap forming the adjustment range between the roller block and the frame-shaped support. The relative movement of the roller base and the frame-shaped support is realized in the gap. In order to be able to apply the adjustment force required for the adjustment movement or to press the first roller against the opposite roller with a certain contact pressure, at least one actuator is arranged in the gap, which exerts a tensile and/or compressive force on the roller seat and which is supported on the frame-shaped support. Since the actuator is arranged in the gap between the frame support and the roller block, a particularly compact construction is achieved. Wherein the recess can be arranged both on the frame-shaped support and on the roller seat.

The design of the recess and of the section embedded in the recess can in principle be arbitrary and can be adapted to the application. It is therefore conceivable that the recess is rectangular and has a recess corresponding to the portion embedded therein in only one direction, so that the roller block is adjustable in only one adjustment direction. If, on the other hand, the roller seat is adjusted in all directions, for example because the rollers arranged on the roller seat have to be brought into contact with a plurality of rollers, it is preferred that the gap and the segments are each rotationally symmetrical, so that an annular gap is formed between them. In this way, different adjustment directions of the roller seat on an adjustment plane can be adjusted relative to the frame-shaped carrier, wherein the width of the annular gap defines the adjustment range of the adjustment movement.

If the roller block is adjusted in various adjustment directions, for example over the entire adjustment plane, in accordance with the frame carrier, a plurality of actuators are required to achieve the adjustment movements required for this purpose. According to a preferred embodiment, at least three actuators are provided between the roller block and the frame support, with which actuators the first roller can be pressed in different directions in each case. The application of the resultant force to the roller block and thus to the roller arranged on the roller block in any direction is achieved by a corresponding selection of the forces respectively applied by the actuators and by a combined control of the different actuators. The actuators are preferably distributed in a star-shaped manner in the gap between the roller block and the frame support. If the four actuators are each arranged opposite one another in the slot, tilting of the actuators can thus be reliably avoided, since the actuators which are each arranged opposite one another are also compressed as a result of the drive of the actuators.

In principle, any desired design of the actuator is possible. Of course, electrical or piezoelectric systems are also conceivable. It is particularly advantageous if the actuator is a pressure body which is acted upon by a pressure medium. When hydraulic oil is used as the pressure medium, very high pressures can be generated with correspondingly large actuating forces.

According to a preferred embodiment, it is also particularly advantageous to use a precompressed gas, in particular compressed air, as the pressure medium. Since the gas is compressible in principle, the use of a precompressed gas as pressure medium results in an elasticity acting between the frame support and the roller block. Mechanical disturbances, which may be caused for example by unbalance or out of round, can be compensated for by damping. In addition, compressed air is already available as an energy transmission medium in most printing presses.

The device for adjusting the contact pressure between the adjustably mounted roller and the opposite roller can also be used for adjusting the contact pressure or the contact pressure between the adjustably mounted roller and the other roller. For this purpose, the adjustment range of the frame support and the roller seat is of course selected to be sufficiently large so that the adjustment movement required for the lift-off adjustment can be realized. The actuator between the frame support and the roller block, which is suitable for this adjustment movement, must additionally be selected accordingly. In order to achieve an adjustment of the clutch pressure independently of the control of the device, it is particularly advantageous if the device is fastened to an additional pressure relief adjustment device. The pressure release device is, for example, a swing arm, by means of which the frame-shaped support can be swiveled between a closed pressure position and a pressure release position, corresponding to the frame of the printing press.

The compactness of the device is further improved, since the fixing means are provided on a device for adjusting the abutment pressure between the two rollers.

For this purpose, it is particularly advantageous if the fastening device extends coaxially with the rollers arranged on the roller base along the central axis of the device.

Drawings

Embodiments of the present invention will be further described with reference to the accompanying drawings. The figures show that:

FIG. 1 is a schematic cross-sectional view of a fixture;

FIG. 2 is a cross-sectional view of an apparatus for adjusting the nip pressure between two rolls having a fixing device;

FIG. 3 is a schematic cross-sectional view of the device of FIG. 2 in a basic position;

FIG. 4 is a schematic cross-sectional view of the device of FIG. 2 in an offset position;

FIG. 5 is a perspective view of the device shown in FIG. 2, an

Fig. 6 is a cross-sectional view of a second embodiment of an actuator of the device of the present invention.

Detailed Description

The fastening device 01 shown in fig. 1 has a part, for example a base body 02, which is formed by a cover 03 and a sleeve 04, and a part, for example a stud 06, which is arranged movably in the sleeve 04 and has a fastening plate 07 on the outside of the stud. The base body 02 is fastened, for example, to a machine frame, and a roller-fastening pin for setting the rollers is fastened, for example, by screws to the fastening plate 07.

The stud 06 has a clearance in the radial direction from the sleeve 04, so that a displacement of the stud 06 can be achieved in any direction 08, corresponding to the adjustment plane of the base body 02, which extends perpendicularly to the drawing plane. The fastening plate 07 can thus be displaced, for example, in the direction of the upward or downward displacement arrow 08. Furthermore, since the fastening device 01 is of a circularly symmetrical design, it is also possible to realize an adjusting movement in any other direction in the adjusting plane. On the inside of the sleeve 04 on the base body 02, lamination pieces 09 are fastened at regular intervals, which engage with lamination pieces 11 fastened to the studs 06. The contact surfaces between the lamination elements 09, 11 extend in a plane parallel to the adjustment plane of the possible adjustment movements. During the relative adjustment of the stud 06 with respect to the base body 02, the lamination element 09 slides along the lamination element 11, wherein the adjustment movement is limited by the clearance between the stud 06 and the base body 02.

In order to fix the fastening device 01 in position, the clamping device has a pressure ram 15, which is arranged displaceably in the impression cylinder 16. The pressure chamber 14 is acted upon by a pressure medium, for example hydraulic oil or compressed air, via the sleeve 13, so that the pressure rod 15 in the impression cylinder 16 is pressed in the direction of the sheet stack 09 or 11. As a result, the lamination elements 09, 11 are clamped between the clamping device and an end stop 17 formed on the sleeve 04. When the contact pressure between the pressure strut 15 and the foremost lamination piece 11 exceeds a certain pressure, the respective lamination pieces 09, 11 are brought into a traction state and simultaneously brought into frictional engagement with each other, so that the stud 06 is fixed relative to the base body 02.

Fig. 2 shows a device 20 for adjusting the contact pressure between a first roller 21 and a second roller 22. The ends of the shaft 23 of the roller 21 are detachably fixed to a quick-lock 24 provided on the device 20. Such quick locking elements 24 are known from the prior art and have a semicircular bearing shell in which the ends of the shaft 23 of the roller engage. The roller shaft 23 is fixed to the quick lock 24 by the upper bearing bush, which is not shown in fig. 2.

The device 20 is essentially formed by a frame-shaped support 26 and a roller holder 27, which frame-shaped support 26 and roller holder 27 are movable relative to each other in an adjustment plane perpendicular to the drawing plane. The frame-shaped holder 26 is formed by a base plate 28, which is rotatably fixed to the frame of the printing machine, for example by means of a swivel arm, and a sleeve 29. The sleeve body 29 has a recess 31 on the side facing the roller 21, into which recess 31 a cylindrical portion 32 of the roller seat 27 engages. The inner diameter of the recess 31 and the outer diameter of the portion 32 are selected such that an annular gap 33 of a gap width of approximately 1mm to 10mm, in particular 2mm, is formed between them in the basic position. The gap 33 constitutes the maximum adjustment range for the adjustment of the roller block 27 in relation to the frame support 26.

In order to achieve the required adjustment movement during the adjustment of the rollers and to achieve the required contact pressure between the rollers 21 and 22, a total of four actuators 34 are distributed as pressure hoses, only two of which are shown in section in fig. 2, on the circumference within the gap 33. The pressure chamber 36 formed by the wall of the actuator 34 can be acted upon with pressure via a feed line 48 (see fig. 5) which is not shown in fig. 2. Depending on the pressure increase ratio in the four actuators 34, a resultant force acts on the roller seat 27, so that the roller 21 is pressed against the roller 22 with the desired resultant pressure by corresponding control of the pressures in the four actuators 34. Since the air cushion under pressure is compressible within the actuator 34, the resulting spring action counteracts the mechanical interference.

In the device 20, the height h36 of the pressure chamber 36 in the radial direction of the roller 21 is smaller than the width b36 of the pressure chamber 36 in the axial direction of the roller 21 and/or the length 136 of the pressure chamber 36 in the circumferential direction of the roller 21 (see also fig. 5).

The ratio of the width b36 and/or the length 136 of the pressure chamber 36 to the height h36 of the pressure chamber 36 is greater than 3, in particular greater than 5 (see fig. 5).

In order to fix the roller block 27 to the frame carrier 26, a lamination element 37 is fixed to the roller block 27, said lamination element 37 engaging with a lamination element 38 fixed to the sleeve body 29 to form a lamination stack. To achieve a friction-fit clamping of the stack of laminations formed by the laminations 37 and 38, a post 39 having a T-shaped cross-section is provided, the circular flange 41 of the circular post head 40 of which abuts the outermost lamination 38 of the stack. At the opposite end of the strut 39, a pressure plate 42 is fastened, on which the spring force of a spring element 43 acting as a disk spring set acts. The spring element 43 is mounted prestressed between the pressure plate 42 and the sleeve body 29, so that the stack of laminations 37, 38 is clamped by the spring force transmitted by the posts 39 to the laminations 37, 38.

When adjusting the roller seat 27 in accordance with the frame carrier 26, in particular when adjusting the contact pressure between the rollers 21, 22, the fastening device formed by the sheet metal parts 37, 38 and the rod 39 and the pressure plate 42 must be released. For this purpose, a pressure sleeve 44 is provided on the base plate 28, through which a pressure chamber 46 between the pressure plate 42 and the base plate 28 is acted upon by a pressure medium, for example compressed air. As soon as the pressure of the air exceeds the spring force of the spring element 43, the rod 39 will move away from the outermost lamination stack 38, so that the lamination stack is no longer clamped with a friction fit and can move relative to one another.

The adjustment of the inter-roller bonding pressure is performed, for example, as follows. The pressure chamber 46 is first loaded with sufficient pressure so that the lamination stack 37, 38 is no longer clamped by the friction fit. The actuators 34 are then each subjected to a pressure, so that the desired contact pressure is established between the rollers 21, 22 and between the roller 21 and the other rollers not shown in fig. 2 and a contact strip of the desired width is formed. Once the correct adjustment is achieved with the desired abutment pressure between the rollers 21, 22, the pressure chamber 46 is relieved, so that the studs 39 clamp the lamination members 37, 38 against one another, so that the roller seat 27 is fixed in the desired position in relation to the frame support 26. And finally the actuator 34 is de-energized.

The principle of operation of the device according to the invention when performing the necessary adjustment movements is schematically shown in fig. 3 and 4. Fig. 3 shows the frame-shaped holder 26 with the recess 31 and the section 32 of the roller block 27 inserted into the recess. By selecting the dimensions, a gap 33 is formed between the frame support 26 and the section 32 of the roller block 27, in which gap an actuator 34, schematically illustrated by an arrow in fig. 3 and 4, is arranged. The possible adjusting movement between the frame-shaped support 26 and the roller block 27 is limited by an adjusting plane, which extends in the drawing plane in fig. 3 and 4, wherein the adjusting range of the adjusting movement is limited by the width of the gap 33.

As is shown by way of example in fig. 4, the roller seat 27 and the roller 21 fixed to the roller seat 27 are laterally displaced relative to the frame 26, as a result of the actuation of the actuator 34 and the resulting force acting on the section 32. Once the roller block 27 has achieved the desired position relative to the frame 26, the fixing device formed by the stack of laminations 37, 38 and the post 39 and the pressure plate 42 is controlled, so that the position is continuously fixed and no further drive of the actuator 34 is necessary.

Fig. 5 is a perspective view of the device 20 with the base plate 28, the frame-shaped support 26, the roller holder 27 and the actuator 34. Four actuators 34 are arranged as pressure hoses between the sleeve body 29 of the frame support 26 and the roller block 27, wherein a part of the semicircular snap lock 24 is visible on the outward side of the roller block, and the actuators 34 are acted upon by compressed air via a supply line 48. The lamination packs 37, 38, not shown in the figures, are unloaded by means of the pressure plate 42. A particularly compact construction of the device 20 can be seen, which, due to its overall rotationally symmetrical design (seen in the direction of the base plate 28), has a smaller diameter than the roller 21 itself (see fig. 2).

Fig. 6 is a cross-sectional view of a second embodiment of an actuator 50 of the inventive device 20. The device of the invention with the frame-shaped support 26, the roller housing 27 and the fixing means for fixing the roller housing 27 in correspondence with the roller housing 26 is identical to the structure shown in fig. 2 and will therefore not be described in detail below. A cylindrical membrane 51 is arranged in the slot 33, forming an actuator 50, the upper and lower edges of which are connected to the inner diameter of the sleeve body 29 (not shown in fig. 6). The diaphragm 51 is connected, for example glued, to the inner diameter of the sleeve body 29 in four strip-shaped sections 52, so that four pressure chambers 53 are formed by the sleeve body 29 and the diaphragm 51, said pressure chambers being distributed uniformly over the circumference of the recess 33. The pressure chambers 53 can be acted upon by compressed air via the pressure inlets 54, so that the resultant force, which is generated as a function of the pressure in the four pressure chambers 53, acts on the sections 32 of the roller block 27.

Here too, the height h53 of the pressure chamber 53 of the device 20 in the radial direction of the roller 21 is smaller than the width of the pressure chamber 53 in the axial direction of the roller 21 and/or the length 153 of the pressure chamber 53 in the circumferential direction of the roller 21.

The ratio of the width b53 and/or the length 153 of the pressure chamber 53 to the height h53 of the pressure chamber 53 is greater than 3, in particular greater than 5.

Reference character comparison table

01 fixing device

02 base body, component

03 cover plate

04 sleeve

05 -

06 studs, parts

07 fixed plate

08 moving arrow, adjusting device

09 lamination piece (02)

10 -

11 lamination piece (06)

12 -

13 casing open pore

14 pressure chamber

15 pressure pole

16 impression cylinder

17 end stop

18 -

19 -

20 device

21 first roll

22 second roller

23 shafts, roll shafts

24 quick locking piece

25 -

26 frame-shaped bracket

27 roller seat

28 substrate (26)

29 sleeve body (26)

30 -

31 gap (26)

32 section (27)

33 gap

34 actuator, pressure hose

35 -

36 pressure chamber

37 laminated sheet (27)

38 laminated sheet (26)

39 pole

40 pole head

41 Flange (40)

42 pressure plate

43 spring element

44 pressure sleeve

45 -

46 pressure chamber

47 fixed screw

48 input pipeline

49 -

50 actuator

51 diaphragm

52 fixed segment, range

53 pressure chamber

54 pressure inlet

b36 Width (36)

h36 height (36)

l36 Length (36)

h53 height (53)

l53 Length (53)

Claims (27)

1. A device (20) for adjusting a roller (21), having at least one actuator (50), wherein the actuator (50) has a pressure chamber which is acted upon by a pressure medium, characterized in that the actuator (50) is formed by a pressure-resistant membrane (51) which rests in a gap against a component wall of a roller seat (27) and a component wall of a frame-shaped carrier (26) in such a way that the component wall of the frame-shaped carrier (26) and the membrane (51) form at least one pressure chamber (53) in a fastening section (52) and are simultaneously pressure-resistant connected to one another.

2. Device (20) according to claim 1, characterized in that the height (h53) of the pressure chamber (53) in the radial direction of the roll (21) is smaller than the width of the pressure chamber (53) in the axial direction of the roll and/or the length (153) of the pressure chamber (53) in the circumferential direction of the roll (21).

3. Device (20) according to claim 1, characterized in that the at least two pressure chambers are controlled independently of each other.

4. Device (20) according to claim 1, characterized in that the roller (21) is arranged on a roller seat (27) and the roller seat (27) is arranged on the frame support (26) and the pressure chamber (53) is arranged in the gap (33) between the roller seat (27) and the frame support (26).

5. Device (20) according to claim 1, characterized in that the ratio of the width and/or length (153) of the pressure chamber (53) to the height (h53) of the pressure chamber (53) is larger than 3.

6. Device (20) according to claim 1, characterized in that the pressure chambers (53) act in different directions.

7. A device (20) for adjusting a roller (21), having at least one actuator (50), wherein the actuator (50) has a pressure chamber which is acted upon by a pressure medium, wherein a plurality of pressure chambers (53) are arranged in the circumferential direction of the roller (21), characterized in that the actuator (50) is formed by a pressure-resistant membrane (51) which rests in a gap against a component wall of a frame-shaped carrier (26) and a component wall of a roller seat (27) in such a way that the component wall of the roller seat (27) and the membrane (51) form at least one pressure chamber (53) on a fastening section (52) and are simultaneously pressure-resistant connected to one another.

8. Device (20) according to claim 7, characterized in that the height (h53) of the pressure chamber (53) in the radial direction of the roll (21) is smaller than the width of the pressure chamber (53) in the axial direction of the roll and/or the length (153) of the pressure chamber (53) in the circumferential direction of the roll (21).

9. Device (20) according to claim 7, characterized in that the at least two pressure chambers are controlled independently of each other.

10. Device (20) according to claim 7, characterized in that the roller (21) is arranged on a roller seat (27) and the roller seat (27) is arranged on the frame support (26) and the pressure chamber (53) is arranged in the gap (33) between the roller seat (27) and the frame support (26).

11. Device (20) according to claim 7, characterized in that the ratio of the width and/or length (153) of the pressure chamber (53) to the height (h53) of the pressure chamber (53) is larger than 3.

12. Device (20) according to claim 7, characterized in that the pressure chambers (53) act in different directions.

13. Device (20) for adjusting a roller (21), having at least one actuator (34), wherein the actuator (34) has a pressure chamber which is acted upon by a pressure medium, wherein the actuator (34) is in the form of a pressure hose, the walls of which form the pressure chamber and which are arranged in a gap (33) between a roller seat (27) and a frame-shaped support (26), characterized in that a plurality of pressure chambers (36) acting in different directions are arranged in the circumferential direction of the roller (21).

14. Device (20) according to claim 13, characterized in that the height (h36) of the pressure chamber (36) in the radial direction of the roll (21) is smaller than the width (b36) of the pressure chamber (36) in the axial direction of the roll and/or the length (136) of the pressure chamber (36) in the circumferential direction of the roll (21).

15. Device (20) according to claim 13, characterized in that the at least two pressure chambers are controlled independently of each other.

16. Device (20) according to claim 13, characterized in that the roller (21) is arranged on a roller seat (27) and the roller seat (27) is arranged on the frame support (26) and the pressure chamber (36) is arranged in the gap (33) between the roller seat (27) and the frame support (26).

17. Device (20) according to claim 13, characterized in that the ratio of the width (b36) and/or the length (136) of the pressure chamber (36) to the height (h36) of the pressure chamber (36) is larger than 3.

18. A device (20) for adjusting a roller (21), having at least one actuator (34), wherein the actuator (34) has a pressure chamber which is acted upon by a pressure medium, wherein the actuator (34) is in the form of a pressure hose, the walls of which form the pressure chamber and which are arranged in a gap (33) between a roller seat (27) and a frame-shaped support (26), characterized in that at least two pressure chambers are controlled independently of one another.

19. Device (20) according to claim 18, characterized in that the height (h36) of the pressure chamber (36) in the radial direction of the roll (21) is smaller than the width (b36) of the pressure chamber (36) in the axial direction of the roll and/or the length (136) of the pressure chamber (36) in the circumferential direction of the roll (21).

20. Device (20) according to claim 18, characterized in that the roller (21) is arranged on a roller seat (27) and the roller seat (27) is arranged on the frame support (26) and the pressure chamber (36) is arranged in the gap (33) between the roller seat (27) and the frame support (26).

21. Device (20) according to claim 18, characterized in that the ratio of the width (b36) and/or the length (136) of the pressure chamber (36) to the height (h36) of the pressure chamber (36) is larger than 3.

22. Device according to claim 18, characterized in that the pressure chambers (36) act in different directions.

23. A device for adjusting a roller (21), having at least one actuator (34), wherein the actuator (34) has a pressure chamber which is acted upon by a pressure medium, wherein the actuator (34) is in the form of a pressure hose, the wall of which forms the pressure chamber and which is arranged in a gap (33) between a roller seat (27) and a frame-shaped support (26), characterized in that the height (h36) of the pressure chamber (36) in the radial direction of the roller (21) is smaller than the width (b36) of the pressure chamber (36) in the axial direction of the roller and/or the length (136) of the pressure chamber (36) in the circumferential direction of the roller (21).

24. A device according to claim 23, characterized in that the at least two pressure chambers are controlled independently of each other.

25. Device according to claim 23, characterized in that the roller (21) is arranged on a roller seat (27) and the roller seat (27) is arranged on the frame support (26) and the pressure chamber (36) is arranged in the gap (33) between the roller seat (27) and the frame support (26).

26. Device according to claim 23, characterized in that the ratio of the width (b36) and/or the length (136) of the pressure chamber (36) to the height (h36) of the pressure chamber (36) is larger than 3.

27. Device according to claim 23, characterized in that the pressure chambers (36) act in different directions.