EP1591391B1 - Reeling machine for continuous winding of a web material - Google Patents

Abstract

The machine has a central axle (3) for a roller (4) and a carrying drum (5). The roller forms a nip (7) with the transport equipment so that the roller moves along a horizontal guide way (9). An air sealed roller (10) is attached within the lower part of the machine reaching a desired thickness layer to of the roller, by a movement mechanism. The air sealed roller has a roller diameter (D) between 300 to 500 mm, preferably from 350 to 400 mm. The air sealed roller has several segments stored next to each other at the front side by units (12) arranged on a machine-broad carrier profile (13).

Description

The invention relates to a winding machine for continuously winding a material web, in particular a paper or board web, on a spool to a winding roll, with a carrier drum, which forms a nip (winding nip) with the winding roll, with a comprehensive at least one transport storage, the Tambour along a preferably horizontal guideway leads, and with an attached in the lower part of the winding machine Luftabquetschwalze which can be applied upon reaching a desired layer thickness of the winding roll by means of at least one movement means.

Such winding machines are for example from the European Patent EP 0 483 092 B1 or from the PCT Publication WO 98/52858 A1 The applicant is well known and are used in particular in machines for producing or refining webs, such as paper or cardboard.

In modern winding concepts for material webs, it is necessary today, in preparation for a Tambourwechsels to bring the drum with the almost fully wound reel ("ready toboggan") in an end position (Tambourwechselposition), in which then no effective contact, no so-called nip, between the carrier drum and the winding roll is longer. In this time, in which no nip is more, must be ensured by appropriate measures that no air pockets between the individual layers of the almost fully wound reel arise. Furthermore, both the "wrapped" web tension and the line force must be maintained in order to ensure the desired winding quality in the outer region of the winding roll can. The resulting problem is greater, the faster the winding machines are operated (current order of 1,500 to 2,500 m / min) and the larger the produced diameter of the finished reels are (current order of 2.5 to 4.5 m).

In a winding machine of the type described has already been attempted to solve this problem, as in the German patent application DE 44 01 804 A1 disclosed by the applicant. It is there provided a device comprising a pressure roller with an elastic coating which is pressed against a, of a carrier drum remote winding roller by means of a pneumatic drive. This device serves the purpose of preventing the formation of trapped air between the individual layers of the winding roll by maintaining the line force and to maintain the "wrapped" web tension during the reel change.

Furthermore, from the European Patent EP 0 788 991 B1 ( DE 691 32 424 T2 ) a winding machine for continuously winding a material web, in particular a paper or board web, known on a spool to a winding roll. This winding machine comprises a carrying drum which forms a nip with the winding roll, at least one storage device comprising a transporting device which guides the drum along a preferably horizontal guide track, and an air squeegee roller which can be applied to the winding roll and which is mounted in the lower region of the winding machine. This Luftabquetschwalze also serves the purpose mentioned above, to prevent the formation of air pockets between the individual layers of the winding roll by maintaining the line force and to maintain the "wrapped" web tension during the reel change.

However, the two Luftabquetschelemente, Andrückwalze and Luftabquetschwalze, but have the serious disadvantage that they are subject to a deflection due to their own weight, the winding roll, for example, due to different paper thicknesses across the width more or less of a ideal cylinder shape and the Luftabquetschelemente therefore can not create evenly while maintaining a minimum line force to the surface contour of the almost fully wound reel over the web width away. As a result, it follows that the formation of trapped air between the outer layers of the almost fully wound reel can not be completely avoided.

Furthermore, the mentioned Luftabquetschelemente roll diameter in the range of 140 to 220 mm, so that it comes to many Walzenüberrollungen due to the roll circumference. These roll overruns result in a considerable heating of the roll surfaces or roll coatings, whereby the heat generated is transmitted in a weakened form to the material web and can thereby damage it. This can be the case in particular with thermal papers, which can already be damaged at temperatures of over 35 ° C.

In the past, it has also been found that a small nip with a small effective area due to a small roll diameter has a certain tendency to damage the material web. The expert speaks here of the "aggressiveness" of a small nip.

DE 100 23 057 discloses a winding machine incorporating the features of the preamble of claim 1.

It is therefore an object of the invention to improve a winding machine of the type mentioned in such a way that both air inclusions between the individual layers of the winding roll due to unevenness in the surface contour of the almost fully wound winding roll arise as well as a desired, preferably uniform line force curve between applied Luftabquetschwalze and surface contour of the almost fully wound reel over the web width is given away.

This object is achieved according to the invention in a winding machine of the type mentioned by the features of claim 1.

This results in the advantage that the avoidance of trapped air between the individual layers of the winding roll due to the larger roll diameter is substantially favored when generating a larger effective area. Also, the generation of the desired, preferably uniform line power curve is positively supported. Furthermore, there is a reduced number of roll overruns with at the same time less heating of the roll surface or roll coating. The self-adjusting temperature is in the range of 25 to 30 ° C, depending on the roll diameter and roll surface or roll coating. This is particularly advantageous in the winding of high-quality thermal paper, even necessary.

In a preferred embodiment, the Luftabquetschwalze on at least two, preferably three to five segment roles.

Furthermore, the storage unit is preferably adjustable, preferably positionally regulated. This ensures an exact positioning of the corresponding segmented roller to create a desired, preferably uniform line force profile. Any unevenness in the surface contour of the almost fully wound winding roll, in particular in the two edge regions, are compensated by a controlled positioning of the individual segment rolls. Thus, locally different contact forces are avoided. The technical structure of the entire Luftabquetscheinrichtung also results in a highly self-damping system which largely eliminates vibrations induced by the web or by the winding roll.

The adjustment or positioning of the bearing unit by means of at least one controlled adjusting mechanism, the at least one pneumatic, hydraulic and / or mechanical adjusting element of known design and operation includes. Thus, the bearing unit, for example, profile side have a joint bearing and a resilient and preferably adjustable storage.

So that an optimal application of the segmented roll to the surface contour of the almost fully wound winding roll becomes possible, the joint support is preferably arranged on the winding roll side facing the storage unit and the resilient storage preferably on the side facing away from the winding roll of the storage unit. Moreover, this results in the smallest possible spreading width of the optionally offset laying lines of the segment rolls on the said surface contour.

When using controlled storage units, the same are preferably sectioned across the machine width, whereby different effective forces can be generated in the individual sections. The generation of the different effective forces is in particular caused and monitored by a control unit known per se. The individual sections can in turn be controlled in groups, for example symmetrically to the material web. Moreover, the generation of different effective forces in the individual sections makes it possible to set a desired pressure profile, which is advantageous in particular for NCR papers and / or for not exactly cylindrical winding rolls. The pressure profile can in particular also serve to displace possibly trapped air to the outside to the edges of the winding roll out, for example, with larger forces in the region of the web center and smaller forces in the two edge regions.

So that no speed differences arise between two adjacent segment rollers, they are preferably coupled to one another with an axle coupling. This results in the same circumferential speeds on the segment rollers. Furthermore, peripheral forces can also be transmitted to the winding roll via coupled segment rolls, which can be used, for example, to decelerate the winding roll.

In the context of an optimal configuration of the air squeegee roller, the segmented rollers can preferably be driven by means of at least one drive unit preferably arranged on the front side of the squeegee roller. Thus, the segment rolls can also be pre-accelerated to the circumferential speed of the same before they are applied to the surface contour, so that in turn a smooth, that is, smooth application of the segmented rolls is made possible.

With regard to the technological requirements of the Luftabquetschwalze, it is advantageous if the segment roll has a width in the range of 1,500 to 2,500 mm, depending on whether over the entire width of the web equalization of the contact pressure (small width ranges) or only at the two edges the material web compensation should take place (large width area in the middle of the track, small width areas at the web edges). These dimensions ensure that the material web due to the action of the Luftabquetschwalze no damage, such as grooves or other markings, and property changes, such as highlights, experiences.

Furthermore, in order to maximize the avoidance of air accumulation in front of the Luftabquetschwalze it is advantageous if the segmented roller has a rubberized and / or grooved surface. The rubberized surface of the segmented roll preferably has a hardness in the range of 50-200 P & J (Pussy & Jones), preferably 80-120 P & J.

In order to achieve the greatest possible avoidance of air inclusions between the individual layers of the winding roll, the Luftabquetschwalze can be applied in a peripheral region of the lateral surface of the winding roll, which extends at least from the feed point of the web on the outer surface of the winding roll to the vertical low point of the winding roll. Upstream and downstream jobs provide a loss of effectiveness in terms of the aforementioned avoidance.

With regard to runability and efficiency of the winding machine, it is an advantage, yes even necessary to apply the Luftabquetschwalze before opening the nip between the carrier drum and the winding roll to the winding roll to avoid trapped air and / or a lateral course of the web.

The Luftabquetschwalze is substantially linear, preferably horizontally and / or vertically, and / or substantially along a contour of a circular segment can be applied. These application movements result in practice in terms of their regulations and moving mass or mass changes advantages.

It is also advantageous that, when forming an effective region between the winding roll and the air squeegee roller, the superordinate effective force in the active region can be regulated by a displacement of the carrier profile. This results in a good, until 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 active force in the effective range between the winding roll and the Luftabquetschwalze even during the final winding phase, in the nip between the carrier drum and the winding roll is no longer possible is possible.

Further features and advantages of the invention will become apparent from the dependent claims and the following description of preferred embodiments with reference to the drawings.

Figur 1:

eine schematische Seitenansicht einer Wickelmaschine mit erfindungsgemäßer Luftabquetschwalze während der Hauptwickelphase;

Figur 2:

eine schematisierte Seitenansicht einer Wickelmaschine mit erfindungsgemäßer Luftabquetschwalze während der Endwickelphase;

Figur 3:

eine schematische Darstellung (Querschnitt) der erfindungsgemäßen Luftabquetschwalze; und

Figur 4:

eine schematische und teilweise Darstellung (Längsschnitt) der erfindungsgemäßen Luftabquetschwalze.

Show it

FIG. 1:

a schematic side view of a winding machine with inventive Luftabquetschwalze during the main winding phase;

FIG. 2:

a schematic side view of a winding machine with inventive Luftabquetschwalze during Endwickelphase;

FIG. 3:

a schematic representation (cross section) of the invention Luftabquetschwalze; and

FIG. 4:

a schematic and partial representation (longitudinal section) of the Luftabquetschwalze invention.

In the FIG. 1 Shaped winding machine 1 shown in schematic form for continuously winding a material web 2, in particular a paper or board web, on a spool 3 to a winding roll 4 comprises a carrier drum 5 also referred to as Anpresstrommel or support roller, either rigidly mounted or along an imaginary dashed lines shown horizontal line G is displaceable by means of a pressing device, not shown (double arrow P1) and by a drive, in the case shown by a center drive, is driven. The various storage and movement types for the carrier drum 5 are particularly in the German Offenlegungsschrift DE 198 07 897 A1 disclosed by the applicant; Their content with regard to the various types of storage and movement is hereby made the subject of this description.

The material web 2 is led out either from a calender not shown here or a likewise not shown here 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 material web 2 from the carrier drum 5 and the transfer to the resulting winding roll 4 is done in the so-called nip (winding nip) 7, which is during the main winding phase between the carrier drum 5 and the winding roller 4 is formed.

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 is used for holding and guiding The drum 3 resting on the preferably horizontal rails (guide track) 9 drum 3 of the winding roll 4. A device for controlling the nip 7 line force L during the main winding phase, for example, in the already mentioned German Offenlegungsschrift DE 198 07 897 A1 disclosed by the applicant. In the in FIG. 1 shown main winding phase is an empty drum ("empty drum") 8 held by a holding device, not shown at a distance from the carrier drum 5 ("standby position").

In the lower part of the winding machine 1, a Luftabquetschwalze 10 including device is shown in phantom form, which is in no active relationship with the winding roller 4 during the main winding phase shown. It is rather in a waiting position. The Luftabquetschwalze 10 can be moved by generally known mechanisms both substantially linearly (arrows), preferably vertically, as well as substantially along a contour of a circle segment (arrow) and it is on reaching a desired layer thickness S to the winding roll 4 by means of at least one known Movement device can be applied.

The FIG. 2 shows a schematic side view of a winding machine 1 with inventive Luftabquetschwalze 10 during Endwickelphase. During this Endwickelphase the winding roller 4 is moved with the transport device already described by the carrier drum 5 with the dissolution of the nip and forming a free Bahnzugs away. Time offset then the previously held at a distance from the carrier drum 5 empty drum 8 is placed by the holding device, not shown on the carrier drum 5 with the formation of a new nip 7. With the web separation, not shown, then begins the Anwickelphase for the empty drum 8, wherein the winding roller 4 is then no longer wound and horizontally (arrow P2) in an end position E (Tambourwechselposition) is moved.

The FIG. 3 shows a schematic representation (cross-section) of the invention Luftabquetschwalze 10 during Endwickelphase.

The Luftabquetschwalze 10 has a roller diameter D in the range of 300 to 500 mm, preferably from 350 to 400 mm, and consists of a plurality of juxtaposed segmented rollers 11, which are respectively arranged on the front side by means of bearing units 12 on a machine-width carrier profile 13.

Furthermore, the Luftabquetschwalze 10 preferably at least two, preferably three to five segment rollers 11.

The storage unit 12 is adjustable, preferably regulated positionable, wherein their adjustment or their positioning by means of at least one regulated adjusting mechanism 14 takes place, which comprises at least one pneumatic, hydraulic and / or mechanical adjusting element 15. The adjusting element 15 may be designed, for example, as a controllable piston unit with hydraulic or pneumatic admission or as an electromechanical actuator. The control R is only symbolically represented by an arrow.

In a possible two-point storage, the storage unit profile side have a hinge bearing and a resilient and preferably adjustable storage, the hinge bearing is usually arranged on the winding roll side facing the storage unit and wherein the resilient and preferably adjustable storage usually on the side facing away from the winding roll the storage unit is arranged. In this case, the joint bearing can be arranged directly on a bearing wall arranged between two segment rollers and on the machine-width carrier profile.

The carrier profile 13 is shown in the representation of FIG. 3 a support tube with a rectangular and / or square tube cross-section. However, it may also have a polygonal tube cross-section, if the application allows.

In the FIG. 3 Furthermore, it can be seen that the air squeegee roller 10 is substantially linear in a peripheral region U to the lateral surface 22 of the winding roll 4. preferably vertically, and / or substantially along a contour of a circular segment can be applied. The peripheral region U extends at least from the contact point A of the material web 2 on the lateral surface 22 of the winding roll 4 to the vertical low point T of the winding roll 4th

The Luftabquetschwalze 10 is before opening of the nip 7 ( FIG. 1 ) between the carrier drum 5 and the winding roller 4 to the winding roller 4 can be applied. In the formation of an effective range W between the winding roll 4 and the Luftabquetschwalze 10, the higher-order effective force K (arrow) in the effective range W by a displacement of the carrier profile 13 can be controlled.

Immediately upon formation of an effective range W between the winding roll 4 and the air squeegee roller 10 (FIG. FIG. 2 ), the superordinate effective force K in the effective range W is regulated by a displacement of the carrier profile 13. Such a control loop belongs to the field of knowledge of the average person skilled in the art and is, for example, in the already mentioned German Offenlegungsschrift DE 198 07 897 A1 Applicant for a carrier drum disclosed. The Luftabquetschwalze 10 is displaced while maintaining the parent effective force K in the effective range W to the winding roll 4. The displacement is preferred only then terminated when the winding roller 4 horizontal (arrow P2) has reached its end position E (Tambourwechselposition).

The FIG. 4 shows a schematic and partial representation (longitudinal section) of the Luftabquetschwalze 10 of the invention.

The Luftabquetschwalze 10 consists, as already mentioned, of a plurality of juxtaposed segmented rollers 11, which are each arranged on the front side by means of storage units 12 (double storage unit between two segment rollers 11, single storage unit on end-side segment roller 11) on a machine-width carrier profile, not shown. The Luftabquetschwalze 10 has at least two, preferably three to five segment rollers 11.

The controlled storage units 12 are sectioned across the machine width M and in the individual sections S ₁ to S _N different Wirkkräfte K ₁ to K _{N can be} generated by means of the adjustment mechanisms 14. Moreover, the generation of different effective forces S ₁ to S _N in the individual sections S ₁ to S _N makes it possible to set a desired pressure profile, which is advantageous in particular for NCR papers and / or for not exactly cylindrical winding rolls.

Two adjacent segment rollers 11 are mounted in a common bearing sleeve 16 by means of bearings 17 and coupled to each other with an axle coupling 18 of known type.

Furthermore, the segment rollers 11 are drivable by means of at least one drive unit 19, preferably arranged on the front side of the air squeezing device 10, wherein in the FIG. 4 only the drive pulley 20 of the not explicitly shown drive unit 19 is shown; However, the drive pulley 20 may also be designed as a drive pinion. Thus, the segment rollers 11 can be vorbeschleunigt before applying to the surface contour of the almost fully wound reel 4 to the peripheral speed derselbigen, so that in turn a smooth, that is jerkless application of the segment rollers 11 is made possible.

The segment rollers 11 have a width B in a range of 1,500 to 2,500 mm, on.

Furthermore, the segment rollers 11 rubberized ( FIG. 3 ) and / or grooved surfaces 21; Of course, they may also have flat surfaces 21. The rubberized surfaces 21 of the segmented rollers 11 preferably have a hardness H in the range from 50 to 200 P & J, preferably from 80 to 120 P & J.

In summary, it should be noted that a winding machine of the type mentioned above is improved by the invention such that both no air pockets between the individual layers of the winding roll due to bumps arise in the surface contour of the almost fully wound winding roll as well as a desired, preferably uniform line force curve between applied Luftabquetschwalze and surface contour of the almost fully wound winding roll over the web width is given away.

LIST OF REFERENCE NUMBERS

1

winder

2

web

3

drummer

4

reel

5

carrying drum

6

Lateral surface (carrier drum)

7

Nip (winding gap)

8th

Empty Tambour ("empty tambour")

9

Rail (guideway)

10

Luftabquetschvorrichtung

11

segment role

11.1

End segment roll

12

storage unit

13

carrier profile

14

adjustment

15

adjustment

16

bearing sleeve

17

roller bearing

18

axis coupling

19

drive unit

20

sheave

21

surface

22

Lateral surface (winding roll)

A

accumulating point

B

width

D

diameter

e

end position

G

Horizontal straight line

H

hardness

K

Effectiveness (arrow)

K ₁ to K _N

effective force

L

line force

P1

double arrow

P2

arrow

R

Regulation (arrow)

S

layer thickness

S ₁ to S _N

section

T

Low point (winding roll)

U

Peripheral area (winding roll)

W

effective range

Claims (16)

1. Winding machine (1) for the continuous winding of a material web (2), in particular a paper or board web, on to a spool (3) to form a wound roll (4), having a carrier drum (5) which forms a nip (7) with the wound roll (4), having a mounting comprising at least one transport device, which guides the spool (3) along a preferably horizontal guide track (9), and having an air squeeze roll (10) which is fitted in the lower region of the winding machine (1) and which, when a desired layer thickness (S) is reached, can be laid on the wound roll (4) by means of at least one movement device, the air squeeze roll (10) having a roll diameter (D) in the range from 300 to 500 mm, preferably from 350 to 400 mm,
   characterized
   in that the air squeeze roll (10) comprises a plurality of segment rollers (11, 11.1) mounted beside one another, which are in each case arranged at the ends by means of bearing units (12) on a machine-width carrier profile (13), and
   in that the individual segment roller (11, 11.1) has a width (B) in the range from 1500 to 2500 mm.
2. Winding machine (1) according to Claim 1, characterized in that the air squeeze roll (10) has at least two, preferably 3 to 5, segment rollers (11, 11.1).
3. Winding machine (1) according to Claim 1 or 2, characterized in that the bearing unit (12) can be adjusted, preferably positioned under control.
4. Winding machine (1) according to one of the preceding claims, characterized in that the adjustment or the positioning of the bearing unit (12) is carried out by means of at least one controlled displacement mechanism (14), which comprises at least one pneumatic, hydraulic and/or mechanical displacement element (15).
5. Winding machine (1) according to one of the preceding claims, characterized in that, on the profile side, the bearing unit (12) has an articulated mounting and a compliant and preferably controllable mounting.
6. Winding machine (1) according to Claim 5, characterized in that the articulated mounting is arranged on the side of the bearing unit (12) facing the wound roll (4), and in that the compliant and preferably controllable mounting is arranged on the side of the bearing unit (12) facing away from the wound roll (4).
7. Winding machine (1) according to one of Claims 3 to 6, characterized in that the controlled bearing units (12) are sectioned over the machine width (M), and in that different effective forces (K₁ to K_N) can be generated in the individual sections (S₁ to S_N).
8. Winding machine (1) according to one of the preceding claims, characterized in that two adjacent segment rollers (11, 11.1) can be coupled to each other, preferably by a shaft coupling (18).
9. Winding machine (1) according to one of the preceding claims, characterized in that the segment rollers (11.1) can be driven by means of at least one drive unit (19), preferably arranged at the end of the air squeeze roll (10).
10. Winding machine (1) according to one of the preceding claims, characterized in that the segment roller (11, 11.1) has a rubber-covered and/or grooved surface (21).
11. Winding machine (1) according to Claim 10, characterized in that the rubber-covered surface (21) has a hardness (H) in the range from 50 to 200 P&J, preferably from 80 to 120 P&J.
12. Winding machine (1) according to one of the preceding claims, characterized in that the air squeeze roll (10) can be laid on the circumferential surface (22) of the wound roll (4) in a circumferential region (U) which reaches at least from the point (A) at which the material web (2) runs onto the circumferential surface (22) of the wound roll (4) as far as the vertical low point (T) of the wound roll (4).
13. Winding machine (1) according to one of the preceding claims, characterized in that the air squeeze roll (10) can be laid on the wound roll (4) before the opening of the nip (7) between the carrier drum (5) and the wound roll (4).
14. Winding machine (1) according to one of the preceding claims, characterized in that the air squeeze roll (10) can be laid on linearly, preferably vertically.
15. Winding machine (1) according to one of the preceding Claims 1 to 13, characterized in that the air squeeze roll (10) can be laid on substantially along a contour of a circular segment.
16. Winding machine (1) according to one of the preceding claims, characterized in that, when forming an active region (W) between the wound roll (4) and the air squeeze roll (10), the higher-order effective force (K) in the active region (W) can be controlled by displacing the carrier profile (13).

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