EP2445819A1

EP2445819A1 - Winding machine for continuously winding a fibrous material web

Info

Publication number: EP2445819A1
Application number: EP10714454A
Authority: EP
Inventors: Ewald Wetschenbacher; Jörg Maurer; Zygmunt Madrzak; Frank Jörger; Malte Müller; Matthias Wohlfahrt
Original assignee: Voith Patent GmbH
Current assignee: Voith Patent GmbH
Priority date: 2009-06-24
Filing date: 2010-04-19
Publication date: 2012-05-02
Also published as: CN102803108A; WO2010149404A1; DE202009008773U1

Abstract

The invention relates to a winding machine (1) for continuously winding a fibrous material web (2), particularly a paper, cardboard or tissue web, onto a winding core (3, 9) into a winding roll (4), comprising a carrier drum (5), which forms a winding gap (7) with the winding roll (4), a mounting, which comprises at least one transport device and guides the winding core (3) along a preferably horizontal guide path, and at least one air pinch-off device (10), which is provided in the lower region of the winding machine (1) and has at least one air pinch-off element, which can be applied, preferably directly before reaching a desired layer thickness (S) of the winding roll (4) and/or preferably directly before dissolving the winding gap (7) formed by the carrier drum (5) and the winding roll (4), to the winding roll (4) by means of at least one movement device acting on both sides to form a pressing gap (12). According to the invention, the air pinch-off device (10), with the at least one air pinch-off element (10.11; 10.12; 10.2; 10.3; 10.4; 10.5), comprises a curved surface (18), which is in contact with the winding roll (4), for forming a planar or approximately planar pressing gap (12) between the air pinch-off device (10) and the winding roll (4) with a linear force (LK) in the range of 0.2 to 6 kN/m, preferably from 0.4 to 5 kN/m, and in particular from 0.5 to 4 kN/m. The curvature (B) of the surface (18) of the air pinch-off device (10) that is in contact with the winding roll (4) has a value ranging from 0.3 to 40 mm, preferably from 1 to 20 mm, and in particular from 2 to 10 mm.

Description

Winding machine for the continuous winding of a fibrous web

The invention relates to a winding machine for continuously winding a fibrous web, in particular a paper, board or tissue web, on a winding core to a winding roll, with a carrier drum, which forms a winding nip with the winding roll, with a comprehensive at least one transport storage, the Winding core along a preferably horizontal guideway leads, and with at least one mounted in the lower region of the winding machine Luftabquetscheinrichtung with at least one Luftabquetschelement, which preferably immediately before reaching a desired layer thickness of the winding roll and / or preferably immediately before dissolution of the winding drum formed by the winding drum and the winding roll can be applied to the winding roll by means of at least one movement device acting on both sides when forming a pressure nip.

Such a winding machine having an air squeezing device is well known, for example, from European patent EP 0 483 092 B1 or from PCT publication WO 98/52858 A1, and it is used in particular in machines for producing or refining fibrous webs, such as paper, Cardboard or tissue webs, used.

In modern winding concepts for fibrous webs, it is necessary today, in preparation for a Tambourwechsels the winding core with the almost fully wound winding roll ("finished bambour") in an end position ("Tambourwechselposition") to bring, in which then no effective contact, no so-called winding nip, between the carrier drum and the winding roll more consists. In this time, in which no winding gap exists, it must be ensured by appropriate measures that no air pockets between the individual layers of the almost fully wound winding roll arise. Furthermore, both the "wrapped" web tension and the line force prevailing in the press nip must be maintained in order to be able to guarantee the desired winding quality in the outer area of the winding roll, and the faster the winding machines are operated, the greater the resulting problem Order of magnitude of 1,500 to 3,000 m / min) and the larger the produced diameters of the finished reels (current order of magnitude of 2.5 to 4.5 m).

The disclosed both in the cited documents and known as the further prior art Luftabquetscheinrichtungen in design of Luftabquetschwalzen meet both the requirement of Nichtentstehens air pockets between the individual layers of almost fully wound winding roll and the need for a process technology required "wrapped" web tension in the almost fully wound take-up roll sufficiently, but the requirement of achieving a sufficient and an over the width of the Anpressspalts constant or approximately constant line force in the formed between the almost fully wound reel and Luftabquetscheinrichtung nip to achieve a good to very good winding quality in the almost fully wound winding reel is not always fulfilled.This is due to the fact that between the almost fully wound reel and the Luftabq Uetscheinrichtung trained Anpressspalt across its width is not flat, for example, due to so-called lowered edges in the outer regions in the almost fully wound reel.

It is therefore an object of the invention to improve a winding machine of the type mentioned in such a way that a flat or approximately even pressure gap between the almost fully wound roll and the Luftabquetscheinrichtung is formed with the result of a constant or approximately constant line force curve across the width of the Anpressspalts. The effective design of the flat or approximately flat Anpressspalts should be done in the simplest possible constructive manner with a total small additional space and not significantly increased Anschaffungsund operating costs for Luftabquetscheinrichtung. In addition, during winding of the almost fully wound winding roll with the nip, at least the same winding quality as in the main winding of the winding roll with the winding nip formed between the carrier drum and the winding roll should be achieved.

This object is achieved in a winding machine of the type mentioned according to the invention that the Luftabquetschichtung with the at least one Luftabquetschelement a cambered and the winding roller contacting surface for the purpose of forming a flat or approximately flat Anpressspalts between the Luftabquetscheinrichtung and the winding roll with a line force in the range of 0th , 2 to 6 kN / m, preferably from 0.4 to 5 kN / m, in particular from 0.5 to 4 kN / m, and in that the crowning of the winding roll contacting surface of the air squeezing device has a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm.

The object of the invention is achieved in full in this way.

The presence of a crown on the winding roller contacting surface of the at least one Luftabquetschelements the Luftabquetscheinrichtung is achieved effectively and reliably, that a flat or approximately flat Anpressspalts between the almost fully wound roll and the Luftabquetscheinrichtung with the result of a constant or approximately constant line force curve over the width of the Anpressspalts is formed away. And these lines force course contributes significantly to the achievement of a good to very good winding quality in the - A -

almost fully wound winding roll.

In a first embodiment of the invention, the Luftabquetscheinrichtung as Luftabquetschelement a rigid Luftabquetschwalze with a roll diameter in the range of 200 to 1450 mm, preferably from 300 to 1000 mm, in particular from 500 to 800, on.

And in a second embodiment according to the invention the Luftabquetscheinrichtung comprises as Luftabquetschelement a curved and slender Luftabquetschwalze with several, preferably 2 to 10, in particular 2 to 7 or 2 to 5, immediately adjacent and cylindrical segmented rollers with a segmented roll diameter of 100 to 600 mm, preferably of 200 to 550 mm, in particular from 250 to 500 mm, and with a curved and the segment rollers bearing roller yoke.

Moreover, the roller yoke supporting the segment rollers may have an adjustable curvature for the purpose of adjusting the crowning of the winding roller contacting surface of the air crushing device. The adjustment of the curvature can for example be done by a distortion of the roller yoke at its two bearing ends.

However, the roller yoke carrying the segment rollers may also have an invariable curvature. It can be structurally determined, for example.

In a further embodiment of the invention, the Luftabquetscheinrichtung as Luftabquetschelement a curved and slender Luftabquetschwalze with several, preferably 2 to 10, in particular 2 to 7 or 2 to 5, immediately adjacent and cylindrical segmented rollers with a segmented roll diameter of 150 to 400 mm, preferably from 200 to 375 mm, in particular from 220 to 350 mm, and with a flat or approximately flat, the cylindrical segment rollers bearing by means of bearing units Roll support.

Moreover, in a fourth embodiment according to the invention, the air squeezing device comprises as air squeezing element a curved brush unit with at least one brush, preferably a plurality of brushes, and with a flat or nearly even brush supporting at least one brush, preferably the brush unit carrier supporting a plurality of brushes by means of bearing units.

In a further embodiment according to the invention, the air squeezing device comprises as air squeezing element a curved covering unit having at least one covering element, preferably several covering elements, and having a flat or nearly even covering, the at least one covering, preferably the plurality of coverings, by means of bearing units lining unit carrier.

The bearing units for the segment rollers, brush units and pad units may have adjustable lengths for the purpose of adjusting the crowning of the winding roller contacting surface of the air squeegee.

In a sixth embodiment according to the invention, the air squeezing device comprises as air squeezing element an air squeeze roll having a roller tube supported at least in an axially central region on a continuous roller carrier at least in the radial direction, which outside the axially middle region permits a distance to the roller tube relative to the roller carrier Roller carrier comprises.

The roller tube and the roller carrier can be adjusted to each other at least at the edge side by a relative movement to set the crowning of the winding roller touching surface of Luftabquetscheinrichtung. And in a further embodiment according to the invention, the air squeezing device comprises as air squeezing element a soft air squeegee roll with a deformable lining which is provided at least in some areas with cuts.

And the deformable coating, which has a Shore A hardness (according to DIN 53 505) between 50 and 90, preferably between 55 and 85, in particular between 60 and 80, at least in the region of its lateral surface, preferably comprises a polyurethane, a rubber, a silicone, a silicone blend, a chlorosulfonated polyethylene or a rubber-based material, and the support shaft is preferably a carbon fiber roll ("CarboTec") or a steel roll ("EvoTec") because these lining materials are excellent suitable for such use.

In a first preferred embodiment, the incisions on each side of a perpendicular to the longitudinal axis of the support shaft extending central plane substantially parallel to each other and preferably have a notch width in the range of 0.3 to 1, 0 mm, preferably from 0.4 to 0.8 mm, in particular from 0.5 to 0.7 mm, on. The substantially parallel course of the incisions allows an extended spreading effect in the fibrous web and the specified incision width provides the advantages of a virtually groove-free roller surface, so no longitudinal marks, no wrinkles and the like.

And in a further preferred embodiment, the incisions on each side of a perpendicular to the longitudinal axis of the support shaft extending median plane extending spirally from the median plane to the two roll ends.

In a third preferred embodiment, at least two helical incisions extending at a distance from each other are provided on each side by a central plane extending perpendicular to the longitudinal axis of the support shaft. Furthermore, in the second and third preferred embodiments, the notches on each side of the median plane may be offset from one another in a range of 90 to 180 °, preferably by 90, 120 or 180 °.

Furthermore, in all three embodiments, the incisions preferably have substantially parallel flanks and / or approximately in cross section a trapezoidal shape widening to the bottom of the incisions. By these measures, the spreading effect of trained as Zugmesswalze spreader roller is not insignificantly improved without much effort.

The Luftabquetscheinrichtung is preferably substantially linear, preferably horizontally and / or vertically, or along a contour of a circle segment to the winding roll can be applied. These application movements result in practice in terms of their regulations and moving masses or mass changes advantages.

In addition, in order to achieve the greatest possible avoidance of air inclusions between the individual layers of the almost fully wound winding roll, the Luftabquetscheinrichtung is preferably in a peripheral region which extends from the feed point of the fibrous web on the winding roll to at least the vertical low point of the winding roll to the winding roll applied. Upstream and downstream jobs provide a loss of effectiveness in terms of the aforementioned avoidance.

It is also advantageous if, when forming an effective region between the almost fully wound winding roll and the air squeezing device, the pressing force in the pressing region can be regulated by a displacement of the air squeezing device. This results in a good, up to the last winding layers present winding result, that is, a winding roll with a defined, uniform winding hardness over the entire winding time, achieved as a fine adjustment of the contact force between the winding roll and the Luftabquetscheinrichtung even during the final winding phase, in which there is no winding gap between the carrier drum and the almost fully wound reel more is possible.

Furthermore, it is favorable if the possible Luftabquetschwalze the Luftabquetscheinrichtung by at least one drive means at least before, preferably also during the formation of the Anpressspalts with the winding roller is drivable. Thus, at the same peripheral speeds of Luftabquetschwalze and winding roll a gentle and almost jerk-free application of the Luftabquetschwalze done to the winding roll. Also, the required drive power for the winding roll is not adversely affected by an application of the Luftabquetschwalze, that is increased.

All described embodiments of the Luftabquetscheinrichtung invention has in common that they solve the problem of the invention in its entirety.

The winding machine according to the invention can also be used in an excellent manner in a machine for producing and / or finishing a fibrous web, in particular a paper, board or tissue web.

Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings.

Show it

Figure 1 shows an exemplary course of the line force in a formed between an almost fully wound reel and a cylindrical Luftabquetschwalze pressure nip according to the prior art;

Figure 2 is a schematic side view of a winding machine according to the invention with a Luftabquetscheinrichtung during the main winding phase;

Figure 3 is a schematic side view of a winding machine according to the invention with a Luftabquetscheinrichtung during Endwickelphase; Figure 4 is a schematic view of a first embodiment of a Luftabquetscheinrichtung the winding machine according to the invention;

Figure 5 shows an exemplary course of the line force in a formed between an almost fully wound winding roll and a cylindrical Luftabquetschwalze

Pressing gap according to the winding machine according to the invention; and

FIGS. 6 to 10 are several schematic views of further embodiments of an air squeezing device of the winding machine according to the invention.

FIG. 1 shows an exemplary course of the line force LK in a contact pressure gap 12 according to the prior art formed between an almost fully wound winding reel 4 and a cylindrical air squeegee roller 10.0 of an air squeezing device 10.

It can be clearly seen that the line force LK in the nip 12 is not constant or approximately constant over its width b (double arrow). It comes, for example due to so-called lowered edges in the outer regions in the almost fully wound reel 4, to marginal overpressures Ü.1, Ü.2, which negatively affect the quality of winding in the almost fully wound reel 4 negative.

2 shows a schematic side view of a winding machine 1 for continuously winding a fibrous web 2 onto a winding core 3 to form a winding roll 4. The fibrous web 2 may in particular be a paper, board or tissue web. The winding machine 1 comprises a in professional circles as Anpresstrommel or support roller designated and partially wrapped by the fibrous web 2 carrier drum 5, which is either rigidly mounted or along an imaginary and horizontal line G by means of a Schlittenbeziehungsweise pressing device is not shown (double arrow P1) and in the As a rule, is driven by a drive, not shown. The various types of storage and movement for the carrier drum 5 are disclosed in particular in the German patent application DE 198 07 897 A1; Their content with regard to the various types of storage and movement is hereby made the subject of this description.

The winding roller 4 is guided by means of a lifting device, not shown, a movable transport device in the direction indicated by the arrow P2 movement direction. The transport device can be formed, for example, by a spindle drive which comprises a threaded spindle driven by an electric motor. The transport device serves to hold and guide the winding core 3 of the winding roller 4 lying on the preferably horizontal rails ("guide track") 8. A device for regulating the line force LK arising in the winding nip (nip) 7 during the "main winding phase" is already shown, for example German Offenlegungsschrift DE 198 07 897 A1; Their content is hereby made the subject of this description. In the "main winding phase" shown in FIG. 1, an empty winding core 9, also referred to in professional circles as an empty drum, is held by a holding device (not shown) at a distance from the carrying drum 5 ("standby position PB").

In the lower area of the winding machine 1, an air squeezing device 10 is shown with an air squeegee 10.1, which is not in any operative relationship with the winding reel 4 during the illustrated "main winding phase." The air squeeze roller 10.1 is rather in a "waiting position PW" and is preferably immediately before reaching one desired layer thickness S of the winding roll 4 and / or preferably immediately before dissolution of the winding nip (nip) 7 formed by the carrier drum 5 and the winding roll 4 to the winding roll 4 by means of at least one known in the art, thus only indicated and acting on both sides movement means 11 during formation of a Anpressspalts 12 (see Figure 2) invest and pressed. The Luftabquetschwalze 10.1 is for this purpose with generally known mechanisms substantially linearly (arrows), horizontally and / or vertically, or along a contour of a circular segment (arrow) movable.

The carrier drum 5 has a preferably rubberized or coated lateral surface 6 and it can temporarily, as shown in Figure 1, with the winding roller 4 form a winding nip 7.

The fibrous web 2 is led out either from a calender not shown here or also here not shown dryer section of a paper or board machine, then wraps around a spreader roller, not shown, and then runs in the direction of arrow on the outer surface 6 of the carrier drum 5, wraps around the lateral surface The detachment of the fibrous web 2 from the carrier drum 5 and the transfer to the resulting winding roll 4 is done in the so-called winding nip (Nip) 7, the Forms during the "main winding phase" between the carrier drum 5 and the winding roller 4.

FIG. 3 shows a schematic side view of a winding machine 1 with an applied and pressable air squeezing device 10 with an air squeeze roller 10.1 during the "end winding phase".

During this "Endwickelphase" the winding roller 4 with the transport device already described by the carrier drum 5 with resolution of the

Winding nips (nips) 7 (see Figure 1) and moved away to form a free Bahnzugs. Time is then offset so far at a distance from the Tragtromnnel 5 held empty winding core 9 of the holding device, not shown, placed on the carrier drum 5 with the formation of a new winding nip (nips) 7. With a web separation, not shown, then begins the "Anwickelphase" for the empty winding core 9, wherein the winding roller 4 is then no longer wound and horizontally (arrow P2) in an end position PE ("Tambourwechselposition") is moved.

Further, the Luftabquetschwalze 10.1 of Luftabquetscheinrichtung 10 in a peripheral region 13, which extends from the Auflaufpunkt 14 of the fibrous web 2 on the winding roll 4 to at least the vertical low point 15 of the winding roll 4, can be applied to the winding roll 4. And when forming a Anpressbereichs 16 between the winding roller 4 and the Luftabquetschwalze 10.1, the contact pressure F (arrow) in the contact pressure 16 by a displacement of Luftabquetschwalze 10.1 is adjustable. Such a regulation belongs to the field of knowledge of the average expert and is disclosed for example in the already mentioned German patent application DE 198 07 897 A1 for a carrier drum. The Luftabquetschwalze 10.1 is while maintaining the contact force F (arrow) in the contact area 16 displaced. The displacement of the Luftabquetschwalze 10.1 is preferred only then terminated when the winding roller 4 horizontally (arrow P2) has reached its end position PE ("Tambourwechselposition").

Also, the Luftabquetschwalze 10.1 by means of at least one drive device 17, not shown, at least before, preferably also during the formation of the Anpressspalts 12 with the winding roller 4 can be driven.

The Luftabquetschichtung 10 shown in the two figures 2 and 3 with the at least one Luftabquetschelement 10.1 has a cambered and the winding roller 4 contacting surface 18 for the purpose of forming a flat or approximately flat Anpressspalts 12 between the Luftabquetscheinrichtung 10, 10.1 and the winding roller 4 with a line force LK in the range from 0.2 to 6 kN / m, preferably from 0.4 to 5 kN / m, in particular from 0.5 to 4 kN / m. The Crowning B of the winding roller 4 touching surface 18 of Luftabquetscheinrichtung 10, 10.1 assumes a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm, at.

FIG. 4 shows a schematic view of a first embodiment of an air squeezing device 10 of the winding machine 1 according to the invention but not shown.

The Luftabquetscheinrichtung 10 comprises a rigid Luftabquetschwalze 10.11 with a roller diameter D.10.11 in the range of 200 to 1450 mm, preferably from 300 to 1000 mm, in particular from 500 to 800.

The curvature B of the winding roller contacting surface 18 of Luftabquetscheinrichtung 10, 10.11 assumes a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm, at.

5 shows an exemplary course of the line force LK in a nip 12 formed between an almost fully wound winding roll 4 (see FIG. 3) and an air squeezing device 10 according to the winding machine according to the invention.

It is clearly a flat or approximately flat nip 12 across its width b (double arrow) between the air squeezing device 10 and the winding roller 4 with a constant or approximately constant line force LK in the range of 0.2 to 6 kN / m, preferably 0, 4 to 5 kN / m, in particular from 0.5 to 4 kN / m can be seen. Thus, an excellent winding quality can be generated in the almost fully wound reel 4.

FIG. 6 shows a schematic view of an embodiment of the first embodiment of the air squeezing device 10 shown in FIG. 4 of the winding machine 1 according to the invention but not shown. The Luftabquetscheinrichtung 10 again has a rigid Luftabquetschwalze 10.12, but is clamped at its two bearing ends L.1, L.2. The achievable camber B of the winding roller contacting surface 18 of Luftabquetscheinrichtung 10, 10.12 thus assumes a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm.

The roll diameter D.10.12 of this stiff air squeeze roll 10.12 is again in the range of 200 to 1450 mm, preferably of 300 to 1000 mm, in particular of 500 to 800.

FIG. 7 shows a schematic view of a second embodiment of an air squeezing device 10 of the winding machine 1 according to the invention but not shown.

This Luftabquetscheinrichtung 10 includes a curved and slender Luftquetquetschwalze 10.2 with several, preferably 2 to 10, in particular 2 to 7 or 2 to 5, immediately adjacent and cylindrical segment rollers 19 with a segment diameter D.19 from 100 to 600 mm, preferably from 200 to 550 mm, in particular from 250 to 500 mm, and with a curved and the segment rollers 19 supporting roller yoke 20th

The curvature B of the winding roller contacting surface 18 of Luftabquetscheinrichtung 10, 10.2 assumes a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm, at.

Moreover, the roller yoke 20 supporting the segment rollers 19 can have an adjustable curvature for the purpose of setting the crown B of the surface contacting the winding roller (roller cover) 18 of the air squeezing device 10, 10.2. The adjustment of the curvature can be done for example by a distortion of the roller yoke 20 at its two bearing ends L.1, L.2.

FIG. 8 shows a schematized view of a third embodiment of a Air squeezing device 10 of the winding machine 1, not shown, but not shown.

This Luftabquetscheinrichtung 10 includes a curved and slender Luftabquetschwalze 10.3 with several, preferably 2 to 10, in particular 2 to

7 or 2 to 5, immediately adjacent and cylindrical segment rollers 21 with a segment roller diameter D.21 of 150 to 400 mm, preferably from

200 to 375 mm, in particular from 220 to 350 mm, and with a plane or approximately flat, the cylindrical segment rollers 21 by means of bearing units 23 supporting roller carrier 22nd

The curvature B of the winding roller contacting surface 18 of Luftabquetscheinrichtung 10, 10.3 assumes a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm.

The illustrated Luftabquetscheinrichtung 10 may in two other, but not shown embodiments, a curved brush unit with at least one brush, preferably a plurality of brushes, and with a flat or approximately planar, the at least one brush, preferably the plurality of brushes bearing units bearing brush unit carrier or a curved and a covering unit having a soft and friction-resistant covering with at least one lining element, preferably a plurality of lining elements, and having a planar or approximately planar covering unit carrier carrying at least one covering, preferably the plurality of coverings, by means of bearing units.

The respective bearing unit 23 may have an adjustable length L for the purpose of adjusting the crowning B of the winding roller contacting surface 18 of the air squeezing device 10, 10.3. The length L may be adjustable, for example, by using shims, screws or the like. FIG. 9 shows a schematized view of a fourth embodiment of an air squeezing device 10 of the winding machine 1 according to the invention but not shown.

This Luftabquetscheinrichtung 10 comprises a Luftabquetschwalze 10.4 with an exclusively in an axially central region M on a continuous roll carrier 24 at least supported in the radial direction roller tube 25 which outside the axially central region M a bending of the roller tube 25 relative to the roller carrier 24 permitting distance A to the roll carrier 24.

The curvature B of the winding roller contacting surface 18 of Luftabquetscheinrichtung 10, 10.4 assumes a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm, at.

The roll tube 25 and the roll carrier 24 can be adjusted to each other at least at the edge by a relative movement RB (arrow) for the purpose of setting the crowning B of the wound roll contacting surface 18 of Luftabquetscheinrichtung 10, 10.4.

FIG. 10 shows a schematized view of a fifth embodiment of an air squeezing device 10 of the winding machine 1 according to the invention but not shown.

And this Luftabquetscheinrichtung 10 includes a soft Luftabquetschwalze 10.5 with a deformable coating 26 which is at least partially provided with notches 27.

The deformable covering 26, which has a Shore A hardness H between 50 and 90, preferably between 55 and 85, in particular between 60 and 80, at least in the region of its lateral surface 28, comprises a polyurethane, a

Rubber, a silicone, a silicone blend, a chlorosulfonated polyethylene or a material based on rubber. The support shaft 29 is a CFRP roller or a steel roller.

The other possible embodiments of this Luftabquetscheinrichtung 10 designed as a soft Luftabquetschwalze 10.5 has already been explained above and sufficiently described for the expert, so that reference can be made thereto.

Furthermore, the winding machine 1 according to the invention shown in the figures is also outstandingly suitable for use in a machine for producing and / or finishing a fibrous web, in particular a paper, board or tissue web.

In summary, it should be noted that a winding machine of the type mentioned above is improved by the invention such that a flat or approximately flat Anpressspalt between the almost fully wound winding roll and Luftabquetscheinrichtung with the result of a constant or approximately constant line kraftverlaufs across the width of the

Anpressspalts away is formed. The effective design of the flat or approximately flat Anpressspalts takes place in the simplest possible constructive manner with a total of small additional space and not significantly increased acquisition and operating costs for the

Luftabquetscheinrichtung. In addition, during winding of the almost fully wound winding roll with the nip, at least the same winding quality as in the main winding of the winding roll is achieved with the winding nip formed between the carrying drum and the winding roll. LIST OF REFERENCE NUMBERS

1 winding machine

2 fibrous web

3 winding core

4 winding roll

5 carrier drum

6 lateral surface

7 winding nip

8 rail ("guideway")

9 winding core

10 air squeezing device

10.0 Air squeegee

10.1 Air squeegee

10.11 Stiff air squeegee

10.12 Stiff air squeegee

10.2 Curved and slender air squeegee

10.3 Curved and slender air squeegee

10.4 Air squeegee

10.5 Soft air squeegee

11 movement device

12 nip

13 peripheral area

14 casserole point

15 vertical low point

16 contact area

17 drive device

18 surface

19 segment roll

20 roller yoke

21 segment roll

22 roll carrier 23 storage unit

24 roller carrier

25 roller tube

26 topping

27 incision

28 lateral surface

29 support shaft

A distance

B Crowning b Width (double arrow) 0.11 Roll diameter

D.19 Segmented roller diameter

D.21 Segmented roller diameter

F contact pressure (arrow)

G straight

H Shore A hardness

L length

L.1 end of storage

L.2 end of storage

LK lines force

M Axial middle range

P1 double arrow (relocation)

P2 arrow (direction of movement)

PB "standby position"

PE end position ("spool change position")

PW "waiting position"

RB relative movement (arrow)

S layer thickness

Ü.1 overpressure

Ü.2 overpressure

Claims

Winding machine for the continuous winding of a fibrous web Patentansprüche

Winding machine (1) for continuously winding a fibrous web (2), in particular a paper, board or tissue web, onto a winding core (3, 9) to form a winding reel (4), comprising a reel drum (5) connected to the winding reel (5). 4) forms a winding nip (7) with a bearing comprising at least one transporting device which guides the winding core (3) along a preferably horizontal guide track and at least one air squeezing device (10) with at least one air squeezing device (10) mounted in the lower region of the winding machine (1) Luftabquetschelement, which preferably immediately before reaching a desired layer thickness (S) of the winding roll (4) and / or preferably immediately before dissolution of the of the carrier drum (5) and the winding roll (4) formed

Winding gap (7) to the winding roller (4) by means of at least one double-acting movement device when forming a Anpressspalts (12) can be applied, characterized in that the Luftabquetscheinrichtung (10) with the at least one

Air-squashing element (10.11; 10.12; 10.2; 10.3; 10.4; 10.5) a cambered surface (18) contacting the winding roller (4) to form a plane or approximately even pressure nip (12) between the air squeezing device (10) and the winding roller (4). having a line force (LK) in the range of 0.2 to 6 kN / m, preferably from 0.4 to 5 kN / m, in particular from 0.5 to 4 kN / m, and that the crown (B) of the Winding roller (4) touching surface (18) of the Luftabquetscheinrichtung (10) has a value in the range of 0.3 to 40 mm, preferably from 1 to 20 mm, in particular from 2 to 10 mm, assumes.

2. Winding machine (1) according to claim 1, characterized in that the Luftabquetscheinrichtung (10) a rigid Luftabquetschwalze (10.11) with a roller diameter (D.10.11) in the range of 200 to 1450 mm, preferably from 300 to 1000 mm, in particular of 500 to

800, includes.

3. Winding machine (1) according to claim 1, characterized in that the Luftabquetscheinrichtung (10) has a curved and slender

Air squeegee roll (10.2) having a plurality, preferably 2 to 10, in particular 2 to 7 or 2 to 5, immediately adjacent and cylindrical segmented rollers (19) with a segmented roll diameter (D.19) of 100 to 600 mm, preferably of 200 to 550 mm, in particular from 250 to 500 mm, and with a curved and the

Segment roller (19) carrying roller yoke (20).

4. Winding machine (1) according to claim 3, characterized in that the segment rollers (19) carrying the roller yoke (20) has an adjustable

Curvature for the purpose of setting the crowning (B) of the winding roll (4) contacting surface (18) of the Luftabquetscheinrichtung (10).

5. winding machine (1) according to claim 1, characterized in that the Luftabquetscheinrichtung (10) a curved and slender Luftabquetschwalze (10.3) with a plurality, preferably 2 to 10, in particular 2 to 7 or 2 to 5, immediately adjacent and cylindrical segment rollers ( 21) with a segment roller diameter (D.21) of 150 to 400 mm, preferably of 200 to 375 mm, in particular of 220 to 350 mm, and with a flat or nearly flat, the cylindrical segment rollers (21) by means of bearing units (23) supporting Roller carrier (22) comprises.

6. Winding machine (1) according to claim 1, characterized in that the Luftabquetscheinhchtung (10) has a curved brush unit with at least one brush, preferably a plurality of brushes, and with a flat or approximately planar, the at least one brush, preferably the plurality of brushes by means of storage units (23) carrying brush unit carrier.

7. Winding machine (1) according to claim 1, characterized in that the Luftabquetscheinrichtung (10) has a curved and a soft and friction-resistant covering pad unit with at least one pad element, preferably a plurality of pad elements, and with a flat or approximately flat, the at least one pad , preferably the plurality of pads by bearing units (23) bearing

Pad unit carrier comprises.

8. Winding machine (1) according to claim 5, 6 or 7, characterized in that the bearing units (23) adjustable lengths (L) for the purpose of setting the

Crowning (B) of the winding roll (4) contacting the surface (18) of the Luftabquetscheinrichtung (10).

9. Winding machine (1) according to claim 1, characterized in that the Luftabquetscheinrichtung (10) a Luftabquetschwalze (10.4) with an exclusively in an axially central region (M) on a continuous roller carrier (24) at least in the radial direction supported roller tube (25 ), which outside the axially central region (M) comprises a distance (A) allowing a deflection of the roller tube (25) relative to the roller carrier (24) to the roller carrier (24).

10. Winding machine (1) according to claim 9, characterized in that the roller tube (24) and the roller carrier (25) for adjusting the crowning (B) of the winding roller (4) contacting the surface (18) of Luftabquetscheinrichtung (10) at least at the edge by a

Relative movement (RB) are mutually adjustable.

11. Winding machine (1) according to claim 1, characterized in that the Luftabquetscheinrichtung (10) a soft Luftabquetschwalze

(10.5) with a deformable covering (26), which is at least partially provided with notches (27) comprises.

12. winding machine (1) according to claim 11, characterized in that the deformable lining (26), at least in the region of its lateral surface (28) has a Shore A hardness (H) between 50 and 90, preferably between 55 and 85, especially between 60 and 80, comprising a polyurethane, a rubber, a silicone, a silicone blend, a chlorosulfonated polyethylene or a rubber-based material, and that the support shaft (29) is a CFK roll or a steel roll.

13. Winding machine (1) according to one of the preceding claims, characterized in that the Luftabquetscheinrichtung (10) is substantially linear, preferably horizontally and / or vertically, or along a contour of a circle segment to the winding roller (4) can be applied.

14. Winding machine (1) according to one of the preceding claims, characterized in that the Luftabquetscheinrichtung (10) in a peripheral region (13) extending from the Auflaufpunkt (14) of the fibrous web (2) on the Winding roll (4) extends at least to the vertical low point (15) of the winding roll (4), to the winding roll (4) can be applied.

15. Winding machine (1) according to one of the preceding claims, characterized in that when forming a Anpressbereichs (16) between the winding roller (4) and the Luftabquetscheinrichtung (10) the contact pressure (F) in the contact pressure area (16) by a displacement of Luftabquetscheinrichtung (10) is adjustable.

16. Machine for producing and / or finishing a fibrous web (2), in particular a paper, board or tissue web, characterized in that it comprises at least one winding machine (1) according to one of the preceding claims.