EP0534930A1 - Apparatus for treating sheet-like materials - Google Patents

Abstract

Apparatus for the processing of sheet-like material, the material being pressed against the surface of a counter-roller or of a counter-beam, characterised in that, in addition to the counter-roller/counter-beam (2), there is a bend-resistant transverse beam, supporting body, carrying beam or the like (3) which is arranged fixedly at a distance from this and parallel to it and in or on which elements (6) generating pressure force are fastened, and in that, in the space between the counter-roller/counter-beam (2) and the transverse beam or supporting body or carrying beam (3), a working roller (4) of suitably bendable nature, carrying out the pressing work on the material web (1) and mounted without axle bearing, bears against the counter-roller or the counter-beam (2), and in that suitably bendable elements (45, 46, 53) (plain-bearing beams, bearing beds, cylindrically shaped bodies, supporting rollers, pressure plates, reinforcing plates and the like), which transmit the pressing force to the working roller (4) and the counter-roller/counter-beam (2) or the material web (1) bearing against this, are arranged in this interspace between the counter-roller/counter-beam (2) and the transverse beam or supporting body or carrying beam (3). <IMAGE>

Description

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

When processing a web, it is of course desirable that the processing is carried out evenly on the entire web material. This is only achieved if the pressure with which the counter-roller and an adjacent processing roller press against one another is constant and is also uniform over the width. A problem that occurs again and again in this connection is the deflection of the rolls due to the large working widths, the larger the smaller the diameter of a roll and the thinner the wall thickness of a roll. On the other hand, due to the better handling of the rollers when converting a device or during maintenance and repair work, the rollers should be relatively light and have a small diameter. There are already several proposed solutions for eliminating this problem. For example, So-called floating rolls are known, the rolls being cut from the inside by e.g. hydromechanical means can be bent. However, these are very expensive to manufacture and complex to maintain and, due to the attachment of the hydromechanical means inside the roller, again require a relatively large diameter. Their axle bearings are also very expensive and complicated, and roller replacement is therefore very complex. In practice, the problem of deflection is usually solved by the fact that the rollers are rubberized and spherically ground, with the disadvantage that this roller works uniformly in width with only a single contact pressure and only with one web width. The necessary, frequent changing of the roller depending on the desired contact pressure and the desired web width is cumbersome and requires a lot of time due to the transport of the rollers, the machine downtime, the interruption of operation, and is therefore not economical.

The object of the present invention is to provide a device create, which ensures a uniform pressure at different working widths and different working pressures when using flexible, easy-to-use, easily replaceable work rolls or rollers.

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

Furthermore, it is an object of the invention to provide a device whose working width can be adapted to the width of the web and which enables zones with different contact pressures to be generated over the working width.

These objects are achieved in that, in addition to a counter roll or a counter beam which is customary in practice, a transverse beam, support body, support beam or the like which is arranged at a distance therefrom and is arranged in parallel therewith is fixed in or on the elements generating pressure force and in that in the space between the counter roll / the counterbeam and the crossbeam or support body or support beam is supported by a work roll, which is mounted on the goods web and carries out the pressing work on the goods, so that it can be bent and is adaptable to the counter roller or the counterbeam, and that adaptably bendable elements (slide bearing beams, bearing beds, cylindrically shaped bodies, support rollers, pressure plates, reinforcement plates and the like. More), which transmit the contact pressure to the work roll or to the counter roller / the counter beam and the material web adjacent to it, are arranged in this intermediate space between the counter roller / the counter beam and the crossbar or support body or support beam.

According to the invention, a work roll which directly executes the machining operation and is made of flexible material in relation to the counter roll is pressed onto the counter roll. The relatively small diameter of the work roll also has the advantage that a relatively high contact pressure, ie a relatively high surface pressure, is achieved by a relatively narrow pressing or contact zone. For example, if liquid is pressed out of a textile web, the liquid can flow out of a narrow pressing or squeezing zone more easily. With a higher pressing capacity, a higher working speed can be achieved and drying energy can be saved. Furthermore, it is to be considered an advantage that such work rolls are easy to manufacture and are easy to handle due to their small diameter and axleless storage and can be easily replaced, save space due to the compact design and can be installed in existing systems. Due to their small size, they can also be easily combined with other processing devices that work on the same lay-up roller.

The contact pressure can be adjusted via the control of the pressure-generating elements and can be varied within a wide pressure range. Is the pressure-generating element e.g. a pneumatic piston, the contact pressure that this piston exerts on the work roll via the adaptably bendable elements can be varied by changing the air pressure in the pneumatics. If several pressure-generating elements are arranged over the length and these are controlled separately, then zones with different pressurization can be created, as is necessary for some purposes.

The device according to the invention is described with reference to exemplary embodiments shown in the drawings. Fig. Shows a device according to the invention with a work roller pressed against a counter roll and two cylindrical pressure bodies or rollers, which rest in a common plain bearing beam or bearing bed and with a cross bar or support body or support beam. Fig. 2 is another embodiment of the invention with a different configuration of the rigid beam. Fig. 3 shows a device according to the invention, in which, in turn, two cylindrical pressure bodies or rollers are present in separate plain bearings or bearing beds, the one plain bearing or bearing bed being fixed while the other is mobile. FIG. 4 shows a device in which two cylindrical bodies or rollers are arranged in a common, movable sliding bearing or bearing bed, as in FIG. 1, but here the possible movement of the sliding bearing or bearing bed is not translational but a tilting movement. 5 and 6 show simple devices according to the invention, in which the work roll itself lies in a slide bearing beam or bearing bed, which in the two representations is subject to the forces of different, pressure-generating elements. Fig. 7 shows a further embodiment of the device according to the invention with a plurality of cylindrical bodies, or rollers and plain bearings / bearing beds, on which force is exerted by reciprocating pistons. 8 shows a device similar to FIG. 7, with the difference that in this embodiment variant only one of the two slide bearings / bearing beds is movable and the slide bearings / bearing beds are arranged in a different position. Finally, FIG. 9 shows a device according to the invention, which is equipped with a substance supply device.

In Figure 1 it can be seen that a flexibly adaptable, axle bearing-free working roller 4 with a smaller diameter is pressed against a fixed, rigid counter-roller 2 over which a material web 1 is guided. Surround the work roll 4 with a jacket layer 20 which is smooth or structured and at most compressible and absorbs, transports and releases liquid or substance. The pressure of the work roll 4 takes place via two bendable, adaptable cylindrical bodies or pressure rollers 45, 46 without an axle bearing, which also serve for the peripheral support of the work roll 4. The two pressure bodies or rollers 45, 46 lie in a common, adaptable, adaptable slide bearing beam / bearing bed 53, to which a lifting piston 6 applies force via a plate 71 and a reinforcing plate 75. The slide bearing beam / the bearing bed 53 is guided laterally by two profile strips 80 during the resulting displacement, which, like the reciprocating piston device 6, are fastened to a fixed crossbeam or support body or support beam 3. In addition, a carrier 12 can be fastened to the crossbeam or support body or support beam 3, through which in a further slide bearing / bearing bed 50 a support roller 47 rests laterally on the work roller 4. Advantageously, the elements involved in the contact pressure (work roll 4, cylindrical pressure bodies or rolls 45 and 46, slide bearing beam / bed 53, plate 71 and reinforcement plate 75) in the work roll 4 become increasingly flexible up to the reinforcement plate 75 and can therefore bend adapt well to the previous element. Therefore, the individual elements can position themselves and there is a uniform pressure distribution and power transmission over the working width from the work roller 4 to the counter-roller 2. In addition to the contact pressure, which is caused by the reciprocating piston, as indicated by dashed lines, a contact pressure by a magnetic force generating device 9 act on the work roll, which in this case consists, at least partially, of magnetizable material.

2 shows an embodiment variant in which the working roller 4 is also circumferentially supported on two cylindrical support and pressure bodies or rollers 45, 46 arranged in a slide bearing beam / bearing bed 53. There is a deformable cushion 22 between the slide bearing beam / bearing bed 53 and the plate 71, which contributes to an even pressure distribution. In this embodiment according to the invention, all elements that contribute to the pressure of the work roll 4 against the counter roller 2 are arranged within a U-shaped crossbeam or support body or support beam 32, which also acts as a lateral guide for the complex of slide bearing beam / bearing bed 53, deformable cushion 22 and plate 71 serves.

Similar to the exemplary embodiments from FIGS. 1 and 2, in the device according to FIG. 3, the work roll 4 is circumferentially supported by the cylindrical bodies / rolls 43, 44 without an axle bearing and carries out the processing of the material web 1 directly at the point of contact with the counter roll 2. The work roll 4 shown here is in turn surrounded by a jacket layer 20 which consists of rubber, felt or the like, and is again smooth or structured and at most compressible and is used for receiving, transporting and dispensing liquid or substance. The cylindrical bodies / rollers 43 44 are arranged in separate plain bearing beams / bearing beds 51, 52 and have cleaning blades 8. The special feature of this embodiment is that the slide bearing / bearing bed 51 is firmly connected to a crossbeam or support body or support beam 31, wherein an elastic cushion 21 can be provided between the crossbeam or support body or support beam 31 and slide bearing / bearing bed 51, while the slide bearing / Bed 52 is also arranged via a deformable cushion on a plate 71 which is articulated to a fixed support 10. On the plate 71, a piston 6a, 6b, 6c, which is fastened on a crossbar or support body or support beam 3, exerts its force, which then acts via the cylindrical pressure body / the pressure roller 43 and the work roller 4 as a pressure force in the point of contact with the counter roller 2 . The support body / the support roller 44 acts as a counter pressure body. The movable plate 71 is connected in an articulated manner to a carrier 10, so that it is not possible to lift the plate 71 at this connection point, which results in a leverage effect which, depending on the position of the point of action of the reciprocating piston, transmits the force (position 6a) (position 6b) or reinforced (position 6c). The plate 71 is preferably inclined with respect to the horizontal.

Another particularly advantageous embodiment of the device according to the invention is shown in FIG. 4. Here, the cylindrical pressure bodies or rollers 45, 46, as in FIGS. 1 and 2, are arranged in a common slide bearing beam / bearing bed 53 which rests on a plate 71. The plate 71 lies on one side in a force-absorbing holder 11 which enables mobility, is inclined against the horizontal and has on its underside a reinforcing plate 75 at the point at which the reciprocating piston 6 engages. The lever-like force transmitted from the reciprocating piston 6 to the plate 71 is transmitted via the slide bearing bar / the bearing bed 53 and the cylindrical pressure bodies or rollers 45, 46 to the work roller 4 which is circumferentially supported without an axle bearing and which is thus pressed against the counter roller 2. Cleaning squeegees 8 rest on the cylindrical pressing bodies or rollers 45, 46. The two processing Excess substance runs over one of these cleaning blades and a slanted surface of the plate 71. Furthermore, as shown in dashed lines, a strip 15 can be attached to the slide bearing beam / bearing bed 53, which prevents the substance located on the surface of the sliding bearing beam / bearing bed 53 from reaching the area behind this strip 15.

This compact arrangement of rollers or cylindrical bodies with this preferably one-piece slide bearing / bearing bed and laterally attached limiting parts (not shown) enables easy handling and cleaning and very clean working in that the substance is kept in a limited area and is derived therefrom.

In FIG. 5, the number of adaptably bendable elements is reduced to two pieces, namely the work roll 4 and a slide bearing beam / a bearing bed 5 resting thereon. The contact pressure is generated here by an expandable hose 60, which lies in a recess in the slide bearing beam / bearing bed 5 and presses against the latter and a stationary crossbar or supporting body or support beam 3. The plain bearing beam / bearing bed 5 is guided between plates 81.

The device in FIG. 6 has an equally simple structure. In a U-shaped crossbar or support body or support beam 32, a reciprocating piston 6 is arranged, which presses against a plate 7, which carries a flexible, adaptable slide bearing / bearing bed 5. In this slide bearing / bed 5, the flexible work roll 4 is arranged, which is pressed against the counter roll 2 with the web 1 guided thereon. As can clearly be seen, the work roll 4 has a considerably smaller diameter than the counter roll 2. A plurality of reciprocating pistons 6 are arranged over the working width and can be controlled separately and thus adapt the bendable pressure elements 5 and 4 to the counter roll 2. On the work roll 4, as seen in the running direction of the counter roll 2, behind the point of contact with the latter, there is a doctor blade 8, the contaminants doctored off, which were transferred to the work roll 4 by the web 1.

7 shows two U-shaped crossbeams or supporting bodies or supporting beams 32, each of which carries a plurality of reciprocating pistons 61, 62, which act on plates 7, which in turn bendable slide bearings / bearing beds 5 for cylindrical pressure bodies or rollers 41, 42 wear. A cleaning squeegee 8 bears against each of these cylindrical pressure bodies or rollers 41, 42. On the two cylindrical pressing bodies or rollers 41, 42, the working roller 4 lies circumferentially supported without axle bearings and carries out the processing by pressing against the counter roller 2. In the example shown here, the force of the reciprocating piston 62 acts on the working roller 4 in an approximately vertical direction via the cylindrical support body or roller 42, while the force of the other reciprocating piston 61 acts approximately on the working roller 4 via the cylindrical pressing body or roller 41 horizontal direction. The direction of the contact pressure of the work roll on the counter roll results from the summation of the two forces. As also shown here, the contact pressure can be additionally increased by a magnetic force generating device 9 if the work roll 4 is at least partially made of magnetizable material.

Also in FIG. 8 there are two cylindrical bodies or rollers 41, 42 in separate slide bearings / bearing beds 54, 55. Here, however, a pressing force is exerted only on the cylindrical pressure body or roller 41 and the slide bearing / bearing bed 54 by means of an expanding hose transfer the work roll 4. The slide bearing / bearing bed 55 is fixedly connected to the crossbeam or support body or support beam 31 via a deformable cushion 22 and the cylindrical body or roller 42 located in this slide bearing / bearing bed 55 acts only as a support and counter pressure roller or body. As can be seen, the two crossbeams or supporting bodies or supporting beams 31, 33 rest on fixed supports 13, 14, which are inclined in the opposite sense by approximately 45 ° to the vertical, as a result of which the direction indicated by arrow 90 of the contact pressure is approximately vertical . The carrier 13 guides the slide bearing beam / the bearing bed 54 its contact movement.

In Fig. 9, as a detail, a substance supply for a device according to the invention is correspondingly e.g. Fig.1 or Fig.4 shown. Two cylindrical pressure bodies or rollers 45, 46 are arranged in a joint, flexible, adaptable slide bearing beam / bearing bed 53, and a working roller 4 is mounted circumferentially on them. The space 67 enclosed by the slide bearing beam / the bearing bed 53, the cylindrical pressure bodies or rollers 45, 46, the working roller 4 and lateral sliding sealing plates is used as the liquid space. Substance is supplied to this space 67 via a line 65. The liquid space 67 is connected via the leasing to a liquid storage container 66, which has a slightly higher level, which is controlled by a level probe 68.

Claims (17)

Device for processing web-like material, the material being pressed onto the surface of a counter roller or counter beam, characterized in that, in addition to the counter roller / counter beam (2), a rigid cross beam, support body, support beam arranged at a distance therefrom in parallel and stationary or the like. (3, 31, 32, 33) is present, in or on which pressure-generating elements (6, 60-62) are fastened and that in space between the counter roller / the counter beam (2) and the crossbar or support body or Support beam (3,31,32,33) a work roll (4) which is mounted on the material web (1) and carries out the pressing work and is adaptably bendable on the counter roller or the counter beam (2) and that adaptably bendable elements (5, 41- 47,51-55) (plain bearing beams, bearing beds, cylindrically shaped bodies, support rollers, pressure plates, reinforcing plates, etc.), which apply the contact pressure to the work roller (4) and the counter roller / the G transfer the beam (2) or the web (1) lying against it, in this space between the counter roller / the counter beam (2) and the crossbar or support body or support beam (3,31,32,33). Apparatus according to claim 1, characterized in that the work roller (4) directly carrying out the machining operation on the counter roller (2) has a small diameter in relation to the counter roller (2). Apparatus according to claim 2, characterized in that the work roll (4) is circumferentially axially movable and circumferentially driven. Apparatus according to claim 2, characterized in that the working roller (4) is circumferentially mounted so as to be axially movable and has a friction drive. Device according to one of the preceding claims, characterized in that that the work roll (4) has a surface made of rubber, felt or the like or is surrounded by a corresponding almond layer (20) which is smooth or structured and at most compressible and absorbing, transporting and dispensing liquid or substance. Device according to one of the preceding claims, characterized in that the pressure-generating elements can be hydraulic, pneumatic, mechanical or magnetic devices which are both combined and can be used individually. Apparatus according to claim 6, characterized in that the pressure-generating elements are arranged distributed over the length, the zones possibly being pressurized to different extents. Device according to one of claims 1 to 6, characterized in that the pressure-generating elements are hoses (60) which are expanded by liquid under pressure. Apparatus according to claim 6, 7 or 8, characterized in that the pressure-generating elements (6, 60-62) press against a plate (7, 71) which the work roll (4) and the bendable elements (4, 41-47 , 5, 51-55). Device according to one of the preceding claims, characterized in that the bendable elements which transmit the contact pressure are provided by cylindrically shaped bodies or rollers (41-47) arranged without an axle bearing. Device according to one of the preceding claims, characterized in that the working roller (4) or the cylindrical bodies or rollers (41-47) are each arranged in a bendable sliding bearing or bearing bed (5, 51-55). Device according to one of claims 1-10, characterized in that that the cylindrical bodies or rollers (45, 46) are arranged in a bendable, common plain bearing beam / bearing bed (53). Device according to one of claims 9 to 12, characterized in that the plate (71) is articulated on one side to a carrier (10, 11) and thus forms a lever construction which, depending on the point of attack of the pressure-generating element on the plate (71 ) is pressure- or force-intensifying, -transmitting or reducing. Device according to one of claims 9 to 13, characterized in that a reinforcing plate (75) is provided on the plate (71) at the point at which the force is applied. Device according to one of claims 10-14, characterized in that the cylindrical bodies or rollers (41-47) are driven circumferentially. Device according to one of the preceding claims, characterized in that different processing stations are present adjacent to the counter roller (2) or the counter beam. Arrangement according to one of the preceding claims, characterized in that the counter roller (2) is a hollow roller in which devices (9) which are associated with one or more machining stations are arranged.

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