FI118531B - Method and apparatus for controlling the reel - Google Patents

Description

ί 118531

Method and apparatus for controlling the reel

FIELD OF THE INVENTION The invention relates to a method for controlling a reel according to the preamble of claim 1. The invention also relates to an apparatus for carrying out the above method according to the preamble of claim 17.

Background of the Invention

At the end of a paper or board machine or in a paper or board post-processing equipment, such as a winding machine, a continuous fibrous web from the preceding process steps is wound around a rotating winding axis, or 15 reel rolls. machine reel. Many roller concepts are known. The winding can be performed in a so-called "roll". by means of a pope reel, in which the web enters the roll by means of a reeling cylinder which rotates at a web speed and which is in contact with the reel. A load is maintained between the roll cylinder and the roll which causes the roll and roll ... A certain line load on a winding nip parallel to the winding axis at the point of contact of the 20 cylinders. The rotation of the reel roll i and the reel formed therefrom can be effected, for example, by pin * "* · 'taping, whereby the reel roll is freely rotatable in the reel carrier structures and the force required for rotation is transmitted from the reel cylinder 25 to the reel. U.S. Pat. No. 4,634,068, or with center drive, whereby a reel roller is also used in addition to the reel roller, for example, U.S. Patent 5,251,835.

• • f O 30 The cross-sectional profiles of the web are formed by a paper machine and a post-processing assembly. The transverse thickness variation of the web is one example of a '·· /' ki of such a cross section. The variations in the transverse direction of the web seem to be of particular concern to the quality of the roll. ·· * · ....: 35 observed "smiling" or "cup-like" cross-sectional thicknesses with a web that is thicker than the center of the edges and is known to produce, by calculation 2 118531, an internal radial pressure distribution of the roll up to the edges. As a result of the movements, the bottom 5 of the machine roll may bounce out, resulting in bottom or edge crossings.

Since the quality of the web itself and its cross-section can no longer be influenced by the reel, conventional roll rolls have been used to improve the structure of the resulting roll by means of a widthwise oscillation of the web, i.e. by guiding the web on the reel roll. In this case, the deviations in the cross-sectional profile of the web do not coincide at the same position in the axial direction of the roll, and the roll structure is smoothened. Oscillation can be accomplished either by using a separate web guiding device prior to the reel, by which the web is deflected in the axial direction of the reel roll or by moving the Tam drill roll itself sideways with respect to the reeling barrel, as shown in U.S. Patent 6,354,531. 26131.

... 20 In EP 959 032, oscillation of the web is accomplished by moving the roller • · ·; together with the reel cylinder and the machine reel formed on the reel roll so that the reel nip between them remains closed. The reel cylinder and its reel roll in nip contact with its * "* are deflected relative to the direction of travel of the cyclically reeled web so that the # ♦ · · 25 reel formed produces a cyclic offset.

The problem with the above solutions is that the current effort to increase the operating capacity of the paper and finishing machine reel, not only by increasing the running speed, but also by increasing the size of the reels being formed, results in longer stopping times for the machine reels and also primary rolls. The reel size *;:! in both the primary and secondary winders requires even stronger transverse * ·; · * directors and oscillating means for the primary and secondary winders, which are: · difficult to implement. the massive structures 35 take up a lot of space, and in the solution disclosed in WO 00/26131, for example, it is difficult to match the center drive shaft and the reel reel coupling.

The winding can also be performed by means of a winding nip formed by an endless loop 5 of the support member. The web is then guided to a roll formed around the reel roll through a continuous moving support member, such as a wire or belt, passed through the guide rollers. The winding nip is thus formed by a support member and a forming roll. The scroll nip is thus long and the nip pressures in the scroll nip remain less than 10 than with conventional reels, which improves the control of the scroll nip. Such a winding method is disclosed, for example, in EP 860391.

DESCRIPTION OF THE IVHVT INVENTION 15

It is an object of the present invention to provide a method which enables oscillation of a web in a reel having a winding nip formed by an endless loop of a support member. It is also an object to provide a method for centering the web or adjusting its position: v> 20 in the axial direction of the reel roll. The method avoids the problems of web-oscillation of other winding methods and allows the oscillation to be performed and the web to be centered on an endless loop of a support member simply and without separate oscillators placed before the coil - *: · 25. It is a further object of the invention to provide the aforementioned. hardware implementing the method.

In order to accomplish these objects, the method of the invention is essentially characterized by what is set forth in the characterizing part of independent main claim 1.

• M

* ::: The apparatus according to the invention, in turn, is essentially characterized by **: ** as set forth in the characterizing part of independent claim 17: *: ·.

···· f • · 4 118531

Other dependent embodiments disclose certain preferred embodiments of the invention.

The invention is based on the idea that in a winder having a winding nip formed by an endless loop of a support member, the web to be wound is guided in the axial direction of the reel roll by moving the guide rolls controlling either the reel roll or the support member loop. In this case, the position of the reel roll or at least one of the guide rolls is imaged to be movable. In continuous oscillation of the web, the web is cyclically guided back and forth in the axial direction of the reel roll. When centering the web in the axial direction of the reel roll, the web is guided based on the measurement of the position of the edges of the web before the support member.

15

An advantage of the invention is that it makes it possible to guide the web in different axial directions of the reel roll to different positions throughout the reel roll. For winding, actuators that already exist in the winder are used. In this case, separate actuators 20 located in front of the reel are not required for guiding the web. Further, by using the loop of the support member to guide, ··. ·. via guide rollers for oscillation, no separate oscillating means are required in the secondary winding apparatus * \ to move the reel roll in the reel / cross direction. The implementation of oscillation does not require additional space: since the invention utilizes actuators already existing in the reel.

· * · • · • ·

The reel roll is moved by rotating it and the machine roll formed thereon at an angle to the upstream direction of the paper web. Turning occurs by moving one or both ends of the spool reel substantially: ···: 30 horizontally so that the web is guided at various points along the axial · {· direction of the reel reel. I.e. reel roll ends *. '· *. moving linearly in the machine direction. When it is desired to oscillate the web, i.e. to continuously guide the web in different axial directions to the reel roll, the reel is cyclically moved back and forth. ·: ··: 35 The reel spool can be moved both when it is in the initial rewind and when it is moved to the secondary rewinder.

5, 118531

The wire guide rollers guiding the loop of the support member are moved by tilting them in the vertical or machine direction of the paper web, either one or both rolls. Turning occurs by moving the end of the wire guide roll, which causes the support member carried by the wire guide rollers to tighten from the side from which the wire guide roll was moved. This causes the web to be guided differently in the axial direction of the reel roll. Oscillation of the web, i.e. transverse reciprocal movement of the web, is achieved by cyclically moving one or both ends of the wire-10 guide roll so that the web is guided at different points in the axial direction of the spool roll. The reciprocating rotation, i.e. the amplitude of the oscillation, is so small that the web remains on the support member throughout the winding. Ts. roll forming, i.e., internal tightness and other properties of the roll, remain good even when the web is oscillated in accordance with the invention.

Description of the Figures Ivhvt

In the following, the invention will be explained in more detail with reference to the accompanying drawings, in which: FIG. 1 schematically illustrates the basic principle of a web winder, FIG. schematically, viewed from the side, guiding the web by · · · · · · moving the reel reel, the reel being in the initial rewinding device. Fig. 2b shows a schematic side view of the web guide • · · * ;;; remaining by moving the reel reel, with the reel reel in the secondary winding device, ** ♦ Figure 2c schematically shows the web guiding *: * 'moving the reel axially by reeling the reel, «· · · · ··· t 118531 Figure 3a Figure 3b schematically illustrates a side view of guiding the web by moving the support member guide roll / guide rolls, the reel roll being in an initial winding device, Figure 3c with a frictional force between the web and the support member, Fig. 3d is a schematic plan view of guiding the web in the axial direction of the reel by moving at least one guide roll; tse frictional force, and Figure 4 schematically illustrates the control and guidance flow of the web guiding and the principle of centering the web.

DETAILED DESCRIPTION OF THE INVENTION The invention will now be described with reference to the above figures. It should be noted that in Figures 2c, 3c and 3d, the position of the required rolls in the inverted position is greatly exaggerated to facilitate understanding. In actual use: ***: the swinging movement is much smaller.

· «·. Figure 1 illustrates a continuous reel, in which the normal: ···: 30 sheet paper web W from a preceding part of a papermaking or paper finishing apparatus passes through a winding nip N1 ·: · to a roll R. This reel is a so-called roller. belt wrapper with scroll nipple ···. is formed by an infinite loop in the form of a flexible · · *! ' by a support member 1, such as a belt or wire. The support member 1 is passed through two guide rollers 2 and 3, at each of which the running direction of the member 1 *: **: 35 turns in the opposite direction. In the web running direction, the first guide roll 2 may form a "hard nip" 7 118531 during the initial winding, so that the support roll 1 is in contact with the roll at a point supported by the guide roll 2 on its surface. The latter guide roll 3 may be a drive roll, i.e. a drive roll, or each roll may be provided with its own drive. The web passes as an oh-5 station of the support member 1 on a machine roll R formed by its own center drive around a rotatable reel roll 5. As the diameter of the machine roll R increases, it is moved to the secondary milling device 6. The roll R is in constant contact with the support member 1 throughout the winding. The reel roll 5 has the possibility of moving in the machine direction with the loop of the support member 1. , are supported on both ends of the reel reel by carriages, i.e. transfer means 6, which move in the support structures 7. The transfer means 6 also serve as a secondary winding device. The reel also has a storage (not shown) of empty reel rolls 5, from which the rolls are brought to an alternate position at the first guide roll 2 to replace the web entering the full machine roll R. The roll change occurs at the production speed, that is, at high speed, the paper web, which goes to the full roll, is changed to run on a new, empty, reel-fed reel.

: * · *: 20 • «: v. Figures 2a and 2b are a side elevational view of an embodiment of the invention for guiding a web in the axial direction of a reel roll. Figs. *. * Show the guiding of the web by moving the reel roll 5, wherein} the web W is guided in the axial direction of the reel roll by rotating one or both ends of the reel roll 5 in the machine direction, either machine or opposite the movement represented by arrow A. ··· W can be controlled both when the spool roll 5 and the machine roll R formed thereon are still in the start winding device 8, which is schematically illustrated in Fig. 2a and / or when the spool roll 5 and the spool 5 are formed. the machine reel R is moved to the secondary reeling device 6. This a *: * direction of movement of the reel roll 5 and the machine reel formed thereon is also schematically shown in Figure 2b by the arrow A.

• · · ♦

Fig. 2c shows a top view of a web guide "* '35 in which one end of the reel roll 51 is turned against the machine direction, i.e. towards the guide roll 2. The support member 1 passes through the guide rolls 2 and 3 8118531 and the web W is perpendicular to the support member. 1 the direction of arrow B (in the machine mouth-O) direction. reel spool 5 and the support member 1, during the reeling in a continuous nip contact extending over at least the width of the web of the reel spool 5 thereof. This achieves the effect that, when the reel spool 5 no-5 netään, the support member 1 will tend to follow the reel spool 5 stores and seeks slowly to the new situation, the web is guided on the reel spool 5 in the axial direction a different position than when the reel spool 5 is perpendicular to the support member axes of motion. Figure 2c, where the reel spool 5 end 51 is angled towards the guide roll 2, the support member 1 tends 10 to switch the direction of arrow C. which directs the web W in the same direction (arrow D) If the web guidance follows in the next step of the reel spool end 51 turned towards the guide roll 3, which reel spool position is shown in Figure 2c by broken lines, tends to support member 1 move in the direction of arrow E (the reel spool end 52 closer to the web W in the inlet direction and 15 guide roll 2), and the web W is directed towards the spool end 52. The reel spool moving may be provided by suitable actuators, for example by means of transfer means 6.

According to another embodiment of the invention, guiding the web; Ve 20 in the axial direction of the spool roll is accomplished by tilting the guide guides guiding the loop of the support member 1 in the vertical direction of the paper web, i.e. vertical or machine direction. As above, one or both ends of the guide roll in question are rotated: the ends. Figures 3a and 3b schematically illustrate the possible directions of movement of the guide rolls 2 and 3 from the side of the reel with arrows F and G. when the reel reel is in the start winder (Fig. 3a) and the secondary winder (Fig. 3b). If both guide paths 2 and 3 are rotated to provide control, it is essential to rotate both wire guide rollers in the same plane of motion.

·:: 30

Fig. 3c shows a top view of a situation in which the web W is guided in a different direction * '; ** in the axial direction of the spool roll 5 by turning the web W. The reel roll 5 is substantially perpendicular to the support member ·: · 1 in the prevailing direction of travel of the web W. The ends 21 ···· 35 of the guide roll 2 are turned obliquely against the machine direction, i.e. the upward direction of the web W (arrow B), so that the edge 9 of the supporting member 1 at the other end 22 of said guide roll 22 is closer to the end 52 of the spool roll 5. the support member 1 is tightened at one end, i.e., at the side 21 of the end roll 21 of the guide roll 2, and loosened at the other, i.e. at the end 22 of the end of the guide roll 2. In this case, the web W is slackened, the reel spool 5 in the vicinity of end of the roll 52, causing the deflection of the web in the direction of arrow H, that is, the reel spool 5 in the axial direction towards the spool end 52.

The effect of turning the guide roll 2 on the support member 1 must be compensated for by rotating the second guide roll 3 of the support member 1 in an opposite direction, i.e. machine direction, so that the end 31 of the guide roll 3 is pivoted away from the end 21 of the first guide roll 2 thereby acting as a compensation roll.

15

Similarly, when the web 1 is to be guided to the other edge in the axial direction of the reel roll 5, the end 22 of the guide roll 2 is moved against the machine direction and compensated by moving the end 31 of the roll 3 towards the reel 5.

• · • »* · · •; The web is guided as described above when, for example, the reel / rechargeable web is uncoated, whereby there is a frictional force between the web W and the support member 1 to hold the web in the support member 25 1. In this case, the grip and control *** · web.

«··

If the web to be rolled is coated at least on one side and the rolled side is rolled so that the coated side of the web is against the surface of the support member 1 * ·; · * 30, there is at least no significant frictional force between the support member and the web. In this case, a spreader roller is preferably used before the roller. 10, which guides the web W and causes it to be perpendicular to the support member "j 1. This control situation is schematically shown from above in Fig. 3d. Using the application roller 10 affects the wrinkling of the web *: * ·: 35 and guiding before the nipple positions in the axial direction of the web when guiding the web, since the transverse components of the application force 10 118531 exert a particular effect on the tighter edge of the support member 1. causing the web W to move towards the tighter edge.

In Fig. 3d, the guide paths 2 and 3 are turned in the machine direction so that the end 22 of the guide roll 2 is turned against the machine direction and this movement of the guide roll 3 is compensated by turning the end 32 of the guide roll 3 in opposite direction, i.e. machine direction (arrow B). The edge of these ends of the support member 1 is thus tighter and the web moves towards it. When the web is to be guided in the other direction by the reel 5, the end 21 of the guide roll 2 is turned against the machine direction and the end 31 of the guide roll 3 is turned into the machine direction. The edge 15 of the support member facing these ends is tighter and the web is guided to this edge by a reel roll 5.

The above-described alternatives for guiding the web with a reel reel are also suitable for oscillating the web, i.e. continuously guiding the web at different points in the axial direction of the reel reel. In this case, the rotational movement of v <20 va for the reel roll or guide roll (s) required for guiding the web is achieved by cyclically turning one or both ends of the roll in question. If the control is performed by means of a reel roll, one or both ends thereof are turned in the machine direction. If the control is by means of one or both of the guide rollers guiding the support member, ··· 25 either end thereof is turned either in the machine direction or! * ··. in the vertical direction.

• · • · ·. The control and oscillating arrangement of the web control and oscillation is schematically shown in Fig. 4. The oscillation of the web by turning the reel roll 5 or the guide rolls 2 and / or 3 is controlled by adjusting and guiding means 9 which continuously obtain the web profile information over the web. Measuring ·: · information, the control and control unit 9 calculates a rotatable roll, i.e.,: 35 reel rolls or another or adjusts the positioning information needed for the positioning of both guide rollers and sends it to the respective roller.

11 118531

When the oscillation of the web is performed by rotating the guide rolls, the control and control unit also adjusts the position of the other, i.e. the compensation roll, either according to a predetermined oscillation sequence or the positioning information obtained from the position of the reversible roll. The position of the reversible roll is measured, for example, by LVDT sensors 14 which can be secured to a suitable location, e.g., the ends of rolls 2 and 3, which position information is transmitted to the control and control unit 9. The control unit 9 forwards the control message to another reversible Telal-10. For example, the position information of the roll 2, i.e. the reversible roll, is transmitted to the control unit, on the basis of which it sends a control message to the compensation roll 3. Measurement and control messages can be transmitted by any known signal transmission method, either by guides, fieldbus or wireless. 15 When using wireless signal transmission, transmitter-receiver pairs must be mounted on the ends of the rollers and on the control unit.

Oscillation has a certain maximum amplitude dependent on the oscillation mechanism or otherwise limited. The maximum amplitude value may be dependent on the pre-· * · ': 20 marks of the maximum stroke length of the actuators that produce the oscillation. The oscillation speed, or frequency, can in turn be made dependent on the running speed of the machine. It can be directly proportional to it.

/ Each machine running speed may have a specific frequency as described below: ·: i.

• s * 25

The extent (amplitude) of oscillation in the axial direction of the reel roll is typically at most 100 mm, preferably between 2 and 50 mm, expressed as the distance between the extreme positions of the web edge in the axial direction of the reel. To maintain good roll structure, oscillation must not be too fast to deflect. The maximum oscillation frequency is preferably * ti such that at least 100 m, preferably at least · · · ·, per cycle. 200 m of web is rolled up. For example, at a speed of 25 m / s, a distance of 100 m means a frequency of 0.25 Hz (1 cycle / 4 seconds). The minimum frequencies and the optimum frequencies can be similarly determined in meters.

·: ··: 35 12 118531

It is possible that at a given moment, due to measurement data, the profile is such that oscillation occurs at maximum amplitude (e.g., within the maximum stroke length of the actuators). As the situation improves, we move on to a shorter oscillation, i.e. a smaller amplitude. It is possible to shift the amplitude range of the oscillation amplitude, i.e. when oscillating with a maximum amplitude smaller, the position of the extremities of the oscillation can be changed in width. Thereby, in a way, the "offset" from the previous position is shifted, whereby the amplitude of the oscillation may also remain the same.

10

Oscillation can avoid the disadvantages of all types of mid-rise profiles. According to similar principles, oscillation can be initiated and its amplitude increased also for other types of profiles, including edge-to-center profiles, or profiles with more irregularities and a more wavy or irregular profile including peaks at random points. Of course, many mathematical methods and algorithms are available for estimating profile quality and magnitude of variations, which can be programmed into the control unit 9 pre-:. 20 ta to start and adjust the oscillation based on the calculation results.

• · ·· • · ·: \ When the web measurement result no longer meets the oscillation criteria, i.e. the web measurement or background result is again within acceptable limits, oscillation: terminated by command of the control unit 9.

·: · 25 ····

The invention can also be utilized to control the web W

as far as possible in the center of the reel roll in its axial length. den. In this case, the position of the edges of the web (W) is measured before the web; The input to the support member 1 and the measurement result in either a tampering roller 5 or a guide roller 2 and / or 3, in the manner described above, a correction movement to provide a centralized web (W). Figure 4 schematically shows! · '·. described in this embodiment.

• · ··· •

The web W enters the reel-up on a support member belonging to one oriented in the direction of arrow B ·: ··: 35 t. Prior to the support member 1, measuring means 12 and 13 are disposed on both sides of the width W of the web, substantially 13 118531, to measure the position of the edges of the web.

The measuring means 12 and 13 may be, for example, optical measuring devices based on light reflectance or transmittance, or measuring devices based on camera technology. Depending on the measurement principle, the exact location of the measuring means and the method of conveying the web before the support member 1, the measuring means are located either just above or below the web or on both sides of the web. A possible measurement configuration may be, for example, a CCD line camera that measures the periphery of the web on a reflexivity basis. The apparatus may then have a light source integrated in the same housing as the camera unit. The camera and the light source are mounted at the edge of the web, perpendicular to the direction of travel of the web, with part of the illumination and measuring area of the camera outside the web 15. The camera distinguishes areas outside the web and its periphery based on the different reflection intensities from which a measurement message is transmitted to the control unit 9. The position of the measuring means relative to the axial direction of the reel roll 5 is predetermined, allowing the control unit to determine the position The measuring means 12 and 13 can also be attached to the measuring beam 11 if desired.

• · • ·

The control unit sends a control message to the desired web positioning reel · reel, which may be a reel reel shown above: · 25 5 or a lead roll or rolls 2 and / or 3. A reel roll and lead roll 2 and / or 3; · ·. the position can also be monitored and adjusted as previously described.

«M

·· *! Correspondingly, the invention can also control the support member 1 in the axial direction of the guide rolls 2 and / or 3 based on the measurement of the position of the edges of the support member 1. In this case, the measuring means 12 and 13 are disposed on both sides. min at half the width of the support member 1, substantially at the same position relative to the length of the support member '*: **, either at or after the guide roll 2 in the machine direction. In Fig. 4, these measuring means measuring the edges of the support member ·: ··: 35 12 and 13 are shown with dashed lines. Such a measurement can be installed to replace conventional pre-guides for supporting members, such as wire edges, for example mechanical spoon solutions. By means of the measurement, it is possible to track the position of the support member in the axial direction of the guide rolls 2 or 3 and, when it deviates, to control the support member, i.e. to correct its position by the position change message 5 of the guide roll 2 or 3.

The invention is not intended to be limited to the exemplary embodiments set forth above, but is intended to be extensively applied within the scope of the invention as defined in the claims which follow. The invention can thus be applied not only in papermaking, but also in carton and tissue roll winding and in related post-processing machines. The invention is also applicable to the so-called. rereeler.

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Claims (32)

A method of controlling a wheelchair in which a wheelchair or paper web or the like (W) is rolled around a rotating tambour roll (5) to a roller (R) 5 via a rolling nip (N), which rolling nip (N) is formed by means of of the tambour roller (5) and the same forming roller (R) as well as the loop of an endless supporting member (1), characterized in that the web (W) rolled on the tambour roller (5) and the same forming roller (R) is guided in the axial direction of the tambour roller (5). 10 Method according to claim 1, characterized in that the paper web or the like (W) is continuously rolled around the rotating tambour roll (5) in the wheelchair. 15 Method according to claim 1 or 2, characterized in that the web (W) rolled on the tambour roller (5) and the same forming roller (R) is guided in the axial direction of the tambour roller (5) to different places by the forming roller (R). . 20 Method according to any of the preceding claims 1-3, characterized in that the web (W) is guided in the axial direction of the tambour roller (5) by turning the tambour roller (5) in the machine direction. • · · »· • ♦ ♦ • 4 Method according to claim 4, characterized in that the tambour roll (5) is reversed by turning one end or both ends (51, 52): * Y of the tambour roll (5) in the machine direction. ··· t ··· * ·· Method according to Claim 4 or 5, characterized in that the web (W) is guided in the axial direction of the tambour roller (5) by turning one end or both ends (51, 52) of the tambour roller (5) cyclically back and forth in the machine direction. . m • · • · · Method according to any of the preceding claims 1-3, characterized in that the endless support means (1) runs via two articulated rollers (2, 3) in the ** and that the web (W ) is guided in the axial direction of the tambour roller (5) by ·: · *: turning at least one of the articulated rolls (2, 3). 118531 Method according to Claim 7, characterized in that at least one of the articulated rollers (2, 3) is turned in the machine direction or in the vertical direction. 5 Method according to Claim 7 or 8, characterized in that the edible tone of one of the articulated rollers (2, 3) is reversed by turning one end or both ends (21, 22, 31, 32) of the at least one articulated roll. (2, 3) in the machine direction or in the vertical direction. Method according to any of the preceding claims 7-9, characterized in that the web (W) is guided in the axial direction of the tambour roller (5) by turning one end or both ends (21, 22) of at least one articulated roller (2). , 3) cyclically back and forth in the machine direction or in the vertical direction. 15 Method according to any of the preceding claims 7-10, characterized in that the effect of turning the first guide roller (2, 3) on the support member (1) is compensated by turning the second guide roller (2, 3) in an opposite direction. in the same plane of motion of the first guide roller (2, 3). Method according to any of the preceding claims 7-11, characterized in that the web (W) is guided before its course to the supporting means (1) by means of a stretching roller (10). 25 • ♦ ·: · γ Method according to any of the preceding claims 5-6 or 9-10, characterized in that the turning of the ends of the tambour roll (5) or the guide rolls (2, 3) (51, 52, 21, 22, 31, 32) is controlled with the aid of the web (W) profile measurement (11). : 30 Method according to claim 11, characterized in that the inversion: of the second guide roller (2, 3) is controlled by means of a predetermined guide sequence or by the position measurement of the first guide roller (2, 3) - solution (14). j '* .. 35 • · 118531 Method according to any of the preceding claims, characterized in that the web (W) is guided in the axial direction of the tambour roll (5) on the base by a position measurement of the edges (W). 5 Method according to any of the preceding claims, characterized in that the support member (1) is guided in the axial direction by the guide roller (2) and / or (3) on the base by a position measurement of the edges of the support member (1). Device for controlling a wheelchair, comprising a wheelchair with a swap nip (N) formed by means of the loop of a flexible, endless support member (1) conveyed via two articulated rollers (2, 3), and a tambour roller (5) and a roll forming roll (R) on the same, through which a paper web or the like (W) is rolled, and which wheelchair is arranged to roll the paper web or the like (W) around the rotary tambour roll (5) into a roll ( R), characterized in that the position of the tambour roll (5) or at least one of the articulated rolls (2, 3) is arranged to change to guide the web (W) to be rolled to the tambour roll (5) and the same forming roller (R), in the axial direction of the tambour roller (5). 20 Apparatus according to claim 17, characterized in that the wheelchair is arranged to roll the paper web or the like (W) continuously around it. rotating tambour roller (5). * · • · t; V 25 Device according to claim 17 or 18, characterized in that the position of the tambour roller (5) or at least one of the articulated rolls (2, 3) is arranged to be changed to guide the web (W) in the axial direction of the tambour roller (5) at different locations of the the forming roller (R). Device according to any of the preceding claims 17-19, characterized in that the tambour roller (5) is arranged to be turned in. \ # machine direction. Device according to claim 20, characterized in that one end (s) (51, 52) of the tambour roller (5) is arranged. : ··: turned in the machine direction. 118531 Apparatus according to Claim 20 or 21, characterized in that one end or both ends (51, 52) of the tambour roller (5) are arranged to be cyclically reversed in the machine direction. Device according to any of the preceding claims 17-19, characterized in that at least one of the articulated rolls (2, 3) is arranged to be turned. Device according to claim 23, characterized in that at least one of the articulated rollers (2, 3) is arranged to be turned in the machine direction or in the vertical direction. Device according to Claim 23 or 24, characterized in that one end or the two ends (21, 22) of at least one of the guide choices (2, 3) are arranged to be turned in the machine direction or in the vertical direction. Device according to any of the preceding claims 23-25, characterized in that one end or the two ends (21, 22) of at least one of the articulated rollers (2, 3) are arranged to be cyclically reversed in the machine direction. or the vertical direction. ·· · · · · Device according to any of the preceding claims 23-26, characterized in that the effect of turning the first guide roller 25 (2, 3) on the support member (1) is arranged to be compensated by means of: : the second guide roller (2, 3) by turning it in an opposite direction in ·· 1: the same plane of movement to the first guide roller (2, 3). ··· • · • · · «1 Device according to any of the preceding claims 23-27, characterized in that, in order to guide the web (W), a stretching roller (10) is placed in the running direction of the web before the support member (1). • · * · · Device according to any of the preceding claims 21-22 or 25-26, characterized in that the device comprises control and control means 35 (9) as well as measuring means (11, 12, 13), and that with the aid of the measuring device (11) ): ··· profile profile measurement of the web (W) is used to control the turning of the ends of the tambour roll (5) or the guide rolls (2, 3) (51, 52, 21, 22, 31, 32). Device according to claim 27, characterized in that the device 5 comprises means (14) for measuring the position of the articulated rollers (2, 3), and that the turning of the second articulated roll (2, 3) is arranged to be controlled by means of a predetermined control sequence or by means of the position measurement of the first articulated roller (2, 3). Device according to any of the preceding claims, characterized in that the position of the web (W) in the axial direction of the tambour roll (5) is arranged to be guided on the base by a position measurement of the edges of the web (W). Device according to any of the preceding claims, characterized in that the position of the support member (1) in the axial direction of the guide roller (2) and / or (3) is arranged to be guided on the base by a position measurement of the edges of the support member (1). ·· m • m 9 • 9 9 9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 999 9 9 • 99 9 9999 999 9 9 9 9 • 99 9 9 9 9 9 9 9 999 999 9 9 9 9 999 9 9 9 9 9 9 9 9 9 99 · 9 1 99 9 9 • 9 • 99 9 99 9 9 • 99 9 • • 9