EP0534930B2 - Apparatus for treating sheet-like materials - Google Patents

Description

The invention relates to a device for processing of sheet material, the material to the surface of a counter roller or counter beam is pressed.

It goes without saying when processing a web desirable that editing on the entire sheet material evenly he follows. This is only achieved when the pressure with which the counter roll and an adjacent processing roller press against each other, is constant and is even across the width. A problem that repeatedly occurs in this context is the Deflection of the rollers due to the large working widths, the larger the smaller the diameter a roller and the thinner the wall thickness of one Roller is. Because of the better handling of the rollers when converting a device that and the roller should be repaired be relatively light and have a small diameter exhibit. To eliminate this problem are already known several solutions. So z. B. known as floating rollers, wherein the rollers from the inside by e.g. hydromechanical Means can be bent. These are however very expensive to manufacture and complex in maintenance and require by attaching the hydromechanical Means inside the roller again a relatively large diameter. Their axle bearing is also very expensive and complicated and the roller replacement therefore very expensive. In practice it will Deflection problem therefore mostly solved by that the rollers are rubberized and ground spherically with the disadvantage that this roller with only one single contact pressure and only with one web width works uniformly. The necessary frequent changing of the roller depending on the desired Contact pressure and desired web width is cumbersome and requires transportation of the Rolling, machine downtime, business interruption a lot of time, and is therefore not economical.

The object of the present invention is a To create device that an even pressure with different working widths and different Working pressures when using bending, easy to use, easy to replace Work rolls or rolls guaranteed.

Furthermore, the device according to the invention is intended for different processing or working pressures own, i.e. e.g. for squeezing (high Contact pressure) as well as for metered application of small quantities (low contact pressure).

Another object of the invention is a device to create, the working width of the width the web can be adjusted and that enables over the working width zones with different levels of contact pressure to create.

In the device according to DE-B 1 076 611 flexible adjustment of the rollers only given in sections, because these rollers are spaced from roller chains are held in position, thereby increasing their storage in the machine frame. The roller chains themselves are not compliant, rather they have the task to counter any deflection of the squeeze rollers, which can be achieved by the fact that the roller chains attacking set screws set accordingly or be tightened.

The object of the invention is solved by the features of claim 1.

The processing operation is preferably carried out on the counter roller immediately executing work role with a small diameter in relation to the counter roller pressed from flexible material. The relatively small one Diameter of the work roll brings additional the advantage that a relatively high contact pressure, i.e. a relatively high surface pressure, by a relative narrow pressing or contact zone is achieved. Becomes e.g. Liquid is pressed out of a textile web, see above can remove the liquid from a narrow pressing or squeezing zone drain more easily. By a higher one Press performance can also be faster can be achieved and drying energy saved will. Furthermore, it is to be considered an advantage that such work rolls are easy to manufacture and due to its small diameter and axleless mounting are easy to use and easy to replace due to the compact design Save space and built into existing systems can be, due to their small size with other processing facilities, that work on the same lay roller, combined will.

The contact pressure is via the control of the pressure force generating Elements adjustable and can be in one large pressure range can be varied. Is this pressure-generating element e.g. a pneumatic Piston, is the contact pressure that this piston has the adaptable bendable elements on the work roll exercises by changing the air pressure in the Pneumatic variable. Are several distributed over the length arranged pressure force generating elements and if these are controlled separately, you can create zones with different pressures as is required for some purposes.

The device according to the invention is illustrated of embodiments shown in the drawings written. Fig. 1 shows an inventive Device with one against a counter roller pressed work roll and two cylindrical pressure bodies or rollers in a common plain bearing beam or bed and rest with a crossbar or support body or support beam. Fig. 2 is one another embodiment of the invention, inter alia, with a different design of the rigid beam. Fig. 3 shows a device according to the invention, in turn two cylindrical pressure bodies or rollers, however, in separate plain bearings or bedding available are, which is fixed a plain bearing or bed, while the other is mobile. 4 shows a device, in the similar to Fig.1 two cylindrical Bodies or roles in a common, mobile Plain bearings or bed are arranged, however here is the possible movement of the plain bearing or bed not translational but a tilting movement. 5 and 6 show simple, inventive Devices where the work role itself is in a plain bearing beam or bed, which in the two representations the forces of different, pressure generating elements. Fig. 7 shows a further embodiment of the invention the device with several cylindrical bodies, or Rollers and plain bearings / bearing beds on which by reciprocating pistons Force is exerted. 8 shows a similar one Device as Fig. 7 with the difference that in this Design variant of only one of the two plain bearings / bearing beds is movable and the plain bearing / bed are arranged in a different position. Fig. 9 finally shows a device according to the invention, which are equipped with a substance supply device is.

In Fig. 1 you can see that a stationary, rigid counter roll 2, over which a web 1 is guided is a flexible, adaptable, axle bearing-free work roll 4 is pressed with a smaller diameter. Surround the work roll 4 with a cladding layer 20, which are smooth or structured and at most compressible and absorbing liquid or substance, transporting and deliver. The pressure of the work roll 4 takes place via two also adaptable, adaptable, cylindrical Body or pressure roller without axle bearings 45,46, which is also used for circumferential storage of the work roll 4 to serve. The two pressure bodies or rollers 45, 46 are located in a joint bendable adaptable Plain bearing beam / bed 53, on which / via a Plate 71 and a reinforcing plate 75 a reciprocating piston 6 brings strength. The plain bearing beam / bed 53 becomes sideways in the resulting displacement guided by two profile strips 80, which, like the Reciprocating piston device 6 on a fixed crossbar or support body or support beam 3 are attached. In addition, can be on the crossbar or support body or support beam 3 a carrier 12 may be attached by the one in another plain bearing / bed 50 Support roller 47 bears laterally on the work roller 4. Advantageously become those involved in the pressing Elements (work roll 4, cylindrical pressure body or rollers 45 and 46, plain bearing beam / bearing bed 53, Plate 71 and reinforcing plate 75) on the work roll 4 always starting up to the reinforcement plate 75 bendable and can therefore easily match the previous one Customize item. Therefore, the individual Position elements freely and there is a even pressure distribution and power transmission over the working width of the working roll 4 the counter roller 2. In addition to the contact pressure, the through the piston can be effected, as indicated by dashed lines, a contact pressure by a magnetic force generating Device 9 act on the work role that in this case, at least partially, made of magnetizable Material exists.

2 shows an embodiment variant, in which the work roll 4 on two, in one Plain bearing beam / bearing bed 53 arranged, cylindrical Carrying and pressing bodies or rollers 45, 46 are circumferentially supported is. Between the plain bearing beam / bed 53 and the plate 71 is a deformable Pad 22, which leads to a uniform pressure distribution contributes. All elements necessary for the contact pressure Work roll 4 contribute to the counter roll 2 are at this embodiment of the invention within a U-shaped crossbar or support body or support beam 32 arranged also as a lateral guide of the complex of plain bearing beam / bed 53, deformable Upholstery 22 and plate 71 is used.

Similar to the exemplary embodiments from FIG. 1 and 2 is the working role in the device according to FIG. 3 4 through the cylindrical bodies / rollers 43, 44 without peripheral bearings and directly leads the Processing of the material web 1 at the point of contact with the counter roll 2 from. The work role shown here 4 is in turn surrounded by a cladding layer 20 made of rubber. Felt or the like., And again smooth or structured and at most compressible and Picking up, transporting and dispensing liquid or substance serves. The cylindrical body / rollers 43, 44 are in separate plain bearing beams / bed 51, 52 arranged and have cleaning blades 8. The special feature of this embodiment is that Plain bearing / bed 51 fixed with a crossbeam or Support body or support beam 31 is connected, wherein between crossbeam or support body or support beam 31 and slide bearing / bed 51 an elastic cushion 21 can be provided while the plain bearing / bed 52 also via a deformable Pad is arranged on a plate 71 which with a stationary support 10 is articulated. On the Plate 71 introduces on a crossbar or support body or support beam 3 attached reciprocating pistons 6a, 6b, 6c to its force, which then over the cylindrical pressure body / Pressure roller 43 and the work roller 4 as Contact force at the point of contact with the counter roller 2 works. The support body / the support roller 44 acts as Counter pressure body. The movable plate 71 is with a Carrier 10 articulated so that lifting off the plate 71 is not possible in this connection point is, which results in a leverage effect depending on Location of the point of application of the reciprocating force transmits (position 6a), reduced (position 6b) or reinforced (position 6c). The plate 71 is preferred inclined to the horizontal.

Another particularly advantageous embodiment of the The device according to the invention is shown in FIG. 4. Here are the cylindrical pressure rollers 45, 46, as in Fig. 1 and 2, in a common plain bearing beam / bed 53 arranged on a Plate 71 rests. The plate 71 is on one side in a force-absorbing, agile way Bracket 11 is inclined to the horizontal and has a reinforcing plate on its underside 75 at the point where the reciprocating piston 6 engages. The lever-like transfer from the piston 6 to the plate 71 Force is exerted via the slide bearing beam / the bearing bed 53 and the cylindrical pressure bodies or rollers 45, 46 on the work roll without peripheral bearings 4 transferred, which thus to the counter roller 2 is pressed. On the cylindrical pressure bodies or rollers 45, 46 are applied to cleaning blades 8. Both of them Processing excess substance runs over a this cleaning squeegee and a beveled surface the plate 71. Furthermore, as shown in dashed lines, a strip on the plain bearing beam / bearing bed 53 15 be set, which prevents that on the surface of the plain bearing beam / bed 53 located Substance gets into the area behind this bar 15.

This compact arrangement of rolls or cylindrical Bodies with this preferably in one piece Plain bearing beam / bed and attached laterally Boundary parts (not shown) enables one easy handling and cleaning and a very clean Work in that the substance in a limited Area and is derived from there.

In Figure 5 is the number of adaptably bendable Elements on two pieces, namely the work roll 4 and a plain bearing beam / bearing bed attached to this 5, reduced. The contact pressure is here by a expandable tube 60 generated in a Recess of the plain bearing beam / bed 5 is and against this and a fixed crossbar or supporting body or support beam 3 presses. The plain bearing beam / that Bearing bed 5 is guided between plates 81.

The device has an equally simple structure in Fig. 6. In a U-shaped crossbeam or A lifting piston 6 is arranged in the supporting body or supporting beam 32, which presses against a plate 7 which a flexible adaptable slide bearing / bearing bed 5 carries. In this plain bearing / bed 5 is the flexible adaptable Work roll 4 arranged against the counter roller 2 pressed with the web 1 guided thereon becomes. As you can clearly see, it has the work role 4 a significantly smaller diameter than the counter roll 2. There are several spread across the working width Reciprocating piston 6 arranged, which are controlled separately can and so the bendable pressing elements 5 and 4 can adapt to the counter roller 2. At the Work roll 4 lies in the direction of the counter roll 2 seen behind the point of contact with it, one Squeegee 8, which squeegees which contaminants transferred through the web 1 to the work roll 4 were.

In Fig. 7 there are two U-shaped crossbars or support body or support beam 32, each several Wear reciprocating pistons 61, 62, which act on plates 7, which in turn bendable slide bearings / bearing beds 5 for wear cylindrical pressure rollers 41,42. On each of these cylindrical pressure bodies or rollers 41, 42 is a cleaning squeegee 8. On the two cylindrical ones Pressure bodies or rollers 41, 42 is located The work roll 4, which is supported on the circumference without axles processing by pressing against the counter roller 2 executes. In the example shown here works the force of the reciprocating piston 62 over the cylindrical Support body or roller 42 on the work roll 4 in approximately vertical direction while the strength of the other Reciprocating piston 61 over the cylindrical pressure body or roll 41 on the work roll 4 in approximately horizontal Direction works. The direction of the contact pressure the work roll on the counter roll results from the Adding up the two forces. As shown here, the pressure can also be generated by a magnetic force Device 9 will be strengthened, if the work roll 4 at least partially made of magnetizable Material exists.

8 also have two cylindrical bodies or Rollers 41, 42 in separate plain bearings / bearing beds 54, 55. But here is only about the cylindrical Pressure body or roller 41 and the slide bearing / bed 54 by means of an expanding hose 60 Transfer contact pressure to the work roll 4. The plain bearing / bed 55 is over a deformable cushion 22 fixed to the crossbeam or support body or support beam 31 connected and the or in this plain bearing / bed 55 cylindrical bodies or Roller 42 only acts as a support and counter pressure roller or -body. As you can see the two crossbeams are resting or support body or support beam 31,33 on stationary Carriers 13, 14, which in the opposite sense by about Are inclined at 45 ° to the vertical, which means that direction indicated by arrow 90, the Contact force is approximately vertical. The carrier 13 guides the plain bearing beam / the bearing bed 54 at his Contact movement.

In Fig. 9, as a detail, a substance supply for a device according to the invention, e.g. Fig.1 or Fig.4 shown. Two cylindrical pressure bodies or rollers 45,46 are in a common bendable, adaptable plain bearing beam / bed 53 arranged and on them a work roll 4 is circumferentially supported. That by the plain bearing beam / the bed 53, the cylindrical pressure body or rollers 45.46, the work roll 4 and side sliding sealing plates enclosed space 67 is called the fluid space used. This space 67 is connected via a line 65 Substance supplied. The liquid space is via the line 67 with a liquid reservoir 66 connected, which is a slightly higher set level controlled by a level probe 68 becomes.

Claims (14)

1. Device or system for the processing of material in form of a WEB, at which the material is pressed to the surface of a counter-roller or of a counter-bar, and at which, except the counter-roller / counter-bar (2), a distant from - and parallel to the latter named roller/bar is existent, in fixed position, a bending proof transversal bar, sustaining body, carrying bar or similar (3,31,32,33), in which or on which pressure-power generating elements (6,60-62) are fastened - and in the space between counter-roller / counter-bar (2) and the transversal bar, (3,31,32,33) and in contact to the counterroller resp. counter-bar (2) is one working roll (4), born without axle-bearing, of adapting bendable features, executing the pressing-on effect to the WEB, (1) whereas adapting bendable elements who have the task to transfer the pressing-force on the working roll (4) and the counter-roller or counter-bar (2) respectively to the WEB (1), are dispositioned in said interspace between the counter-roller / counter-bar (2) and the transversal bar resp. sustaining body or carrying bar (3,31,32,33), characterized in that the adapting bendable elements comprise at least one slide-bearing carrier, resp. one pillow-bed (5, 51-55), in which the circumferential surface at least of one adapting bendable roll (4, 41-47) is slidably mounted.
2. Device according to claim 1, characterized in that the adapting bendable roll is the driving roll (4) itself.
3. Device according to claim 1, characterized in that the working roll (4) executing the processing procedure directly at the counter-roller (2) does have, compared to the counter-roller, a small diameter.
4. Device according to claim 1 or 3, characterized in that the adapting bendable rollers do have the form of cylindrical bodies resp. without axis-bearing positioned rolls (41-47), which are transmitting the pressure-force on the working roll (4).
5. Device according to claim 4, characterized in that two cylindrical bodies or rolls (45-46) are dispositioned in one common slide-bearing carrier / - pillow bed (53).
6. Device according to one of claims 4 or 5, characterized in that the cylindrical bodies resp. rolls (41-47) are driven circumferentially.
7. Device according to one of claims 1 to 6, characterized in that the working roll (4) does have a surface made of rubber, felt or similar, or is wrapped by a corresponding layer (20), either polished or structurized and equally able to be compressed or to take-up, transport and to deliver substances.
8. Device according to one of claims 1 to 7, characterized in that the pressure-generating elements are distributed i.e. positioned over the length, the zones being submitted to different pressure applications, if needed.
9. Device according to claim 8, characterized in that the pressure-generating elements are expanding hoses (60), while under pressure by liquids.
10. Device according to one of claims 1 to 9, characterized in that the pressure-generating elements (6,60-62) are situated under pressing contact with a plate (7,71) which is carrying the working roll (4) and the bendable elements (4,41-25,47,5,51-55).
11. Device according to claim 10, characterized in that the plate (71) is flexible conncected on one side to a carrier element (10,11) and thus forming a lever design, which, depending on the point of impact of the pressure-generating elements on to the plate (71), does have either a pressure- or power-increasing, - transmitting or reducing function.
12. Device according to one of claims 10 or 11, characterized in that on the plate (71) specifically on the spot on which the pressure takes effect, a reinforced plate (75) is provided for.
13. Device according to one of the preceding claims, characterized in that in contact with the counter-roller (2) or the counter-bar, various processing stations are located.
14. Device according to one of the preceding claims, characterized in that the counter-roller (2) is a hollow roller, in which magnet-power-generating systems are coordinated to one or more processing stations.

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