EP1535870B1 - Winding machine for continuously winding a web material - Google Patents

Abstract

The winding machine includes a lift device with air compression unit (12) operated by a drive (18) with at least two contra-rotating drive systems (19.1, 19.2) each having a drive unit (20.1) and a force transfer element (21.1) connected at the end to one of the two transport slides (14.1). The connection of the force transfer element on one side is above the vertical end position of the cross support (17) and on the other side is below the relevant vertical end position of same. The force transfer element can be one side of a cable, chain or steel belt.

Description

The invention relates to a winding machine for the continuous winding of a material web, in particular a paper or board web, on a spool to a winding roll according to the preamble of claim 1.

Such winding machines are well known and are used in particular in machines for the production or refinement of webs, such as paper or cardboard.

In modern winding concepts, 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 in which then no knitting contact, no so-called nip (winding nip), between the carrier drum and the Winder more. 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. Also, the "wrapped" web tension must be maintained, so as to be able to ensure the desired winding quality in the outer region of the winding roll. The resulting problem is greater, the faster the winding machines are operated (order of magnitude 1,500 - 2,000 m / min) and the larger the produced diameter of the finished reels are (order of magnitude 2.5 - 4 m).

It has already been attempted to solve this problem in a winding machine of the type described, as for example in the European Patent Application EP 1 055 624 A2 disclosed by the applicant.

It is there provided in the lower region of the winding machine and at least one Luftabquetschelement having Luftabquetscheinrichtung provided which can be applied to the winding roll upon reaching a desired layer thickness. The transport device has in the region of the two material web edges each a transport carriage, each with a guideway for a Luftabquetscheinrichtung carrying lifting device. The lifting device comprises a cross member, which extends from the guide-side transport carriage to the drive-side transport carriage and to which a drive for the vertical movement of the lifting device is provided. The drive comprises according to the known prior art, several threaded spindle drives, rack drives and / or cylinder drives.

The lifting device shown here has several disadvantages. Thus, their assembly and commissioning, even their operation proves to be extremely difficult due to various parameters to be matched and it also has a variety of different components and groups. This makes it correspondingly expensive, both in production and in operation. Due to their complexity, operational problems can not be completely ruled out.

Furthermore, the disclosure European Patent EP 0 714 373 B1 a method and apparatus for applying final web layers to the winding roll in a winding machine produced during the winding process. It is provided that prior to application of the final web layers an air squeezing is brought into operative contact with the surface of the winding roll, that thereafter the winding roll while maintaining the active contact in their replacement position and thereby a desired strength of the active contact in order to avoid the formation of air bubbles is maintained between the individual layers of the winding roll. The pressing air squeezing element of the air squeezing device is a brushing device, a fragment roller or a spreading rod. Experiments carried out have shown that, for example, the use of a brush can be disadvantageous in that there is a permanent risk that the brush hair damage sensitive paper types, that solve individual brush hairs and come as an impurity in the paper cycle or that the brush hairs are damaged themselves.

The invention is therefore based on the object, a winding machine for continuously winding a web of the type mentioned in such a way that the Luftabquetscheinrichtung is significantly improved in terms of function and reliability at lower cost and with less complexity.

This object is achieved in that the drive comprises at least two counter-rotating drive systems, each having at least one drive unit and at least one acted upon by the respective drive unit power transmission element, which is connected at the end with one of the two transport carriages and the one end connection above and the other end connection is located below the respective vertical end position of the cross member.

The object of the invention is completely solved in this way.

By this design of the drive an easily tunable and effective optimal system is created, which is still characterized by simplicity and reliability.

In a preferred embodiment, the drive system has a double-acting drive unit and two power transmission elements, of which the first power transmission element between the one transport carriage and the double-sided acting drive unit and the second power transmission element between the double-acting drive unit and the other transport carriage is arranged. This creates the possibility of making the lifting movement more controllable and process-reliable as a result of predetermined movement distances. Each movement of the lifting device is positively guided and thus, as already mentioned, more reliable.

The double-acting drive unit is preferably a double-acting cylinder, in particular a pneumatic or hydraulic cylinder, a motor drive unit with two drive disks, a linear motion unit, in particular an electromagnetic linear motion unit, or the like. Such drive units are well known in the field of materials handling and have already proven themselves in many applications.

With regard to a uniform application of Luftabquetscheinrichtung to the winding roll, it is advantageous if the force transmission elements are designed lengthwise such that the Luftabquetscheinrichtung carrying lifting device is arranged coaxially or approximately coaxially with the winding roll.

So that a preferably symmetrical weight distribution in the longitudinal region of the lifting device can be achieved, the drive unit is preferably arranged centrally or approximately centrally between the two transport carriages of the transport device on the cross member.

The force transmission element is advantageously a strand of a rope, a chain, a belt, in particular a woven or steel belt, or a belt, in particular a high-power belt. These elements are characterized by a variety of uses at a manageable cost.

The drive system further preferably has at least two deflecting elements, in particular deflection rollers, on which the at least one force transmission element from a horizontal or approximately horizontal course in at least deflect a vertical or nearly vertical course. This embodiment enables optimal power transmission when meeting design requirements and safety aspects.

Again, in terms of safety aspects, it is advantageous if the cross member is formed as a preferably rectangular hollow profile with an interior and when the essential units of the drive system are arranged in the interior of the cross member. In this case, the number of moving and accessible components is reduced to a minimum.

Depending on the application, it is advantageous if the Luftabquetschelement top or end side stationary or movable, preferably pivotally and / or slidably mounted on the cross member.

• es kann als eine Walzenanordnung ausgebildet sein, entweder mit einem durchgehenden Walzenkörper oder mit einer Vielzahl von Walzenkörper-Segmenten,
• es kann als ein Bürstenkörper, rotierend oder feststehend, ausgebildet sein,
• es kann als ein auf einem Rahmen angebrachtes Verbundelement mit einem Grundkörper und einem an der möglichen Kontaktfläche angebrachten reibungsarmen Belag ausgebildet sein,
• es kann aus einer Anordnung mehrerer kleiner Einzelrollen bestehen, die auf mindestens einem Rahmen angebracht sind, oder
• es kann aus einem auf einem Rahmen angebrachten Kontaktelement mit der Form eines Tragflügels und mit einem reibungsarmen Belag bestehen.

The Luftabquetschelement can be inventively designed differently:

• it may be formed as a roller arrangement, either with a continuous roller body or with a plurality of roller body segments,
• it can be designed as a brush body, rotating or stationary,
• it can be designed as a composite element mounted on a frame with a base body and a low-friction lining attached to the possible contact surface,
• it may consist of an arrangement of several small single rolls, which are mounted on at least one frame, or
• it may consist of a mounted on a frame contact element with the shape of a wing and with a low-friction coating.

These Luftabquetschelemente are characterized inter alia by the fact that the individual components can be replaced independently and therefore cost that the masses to be accelerated can be kept small, the efficiency of Luftabquetschvorrichtung can be kept high overall, and that optimally small individual roles winding roll contour can adjust.

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

Figur 1:

eine schematische Seitenansicht einer Wickelmaschine mit einer Luftabquetscheinrichtung während der Hauptwickelphase;

Figur 2:

eine perspektivische Ansicht einer bevorzugten Ausführungsform der erfindungsgemäßen Luftabquetscheinrichtung; und

Figuren 3A und 3B:

zwei Längenschemata der Kraftübertragungselemente.

Show it:

FIG. 1:

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

FIG. 2:

a perspective view of a preferred embodiment of the invention Luftabquetscheinrichtung; and

FIGS. 3A and 3B:

two length diagrams of the power transmission elements.

The winding machine 1 illustrated in a schematic side view in FIG. 1 during the last sequences of the main winding phase comprises a carrier drum 2 which is either rigidly mounted or displaceable along an imaginary horizontal straight line G represented by a dashed line (not shown) (double arrow) 3) and by a drive, in the case shown by a center drive, is driven. The different storage and movement types for the carrier drum 2 are particularly in the European Patent Application EP 0 941 955 A2 disclosed by the applicant. With regard to the other structural properties and procedural aspects of the winding machine 1 and the course of the winding process is on the PCT Publication WO 98/52858 A1 referenced by the applicant.

The material web 4 is generally 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 first a spreader roller, not shown, and then runs in the direction of arrow on the lateral surface 5 of the carrier drum 2, wraps around the lateral surface 5 of the carrier drum 2 by a certain angle (peripheral area) until it is detached by the winding roller 7 formed on a drum 6.

The detachment of the material web 4 from the carrier drum 2 and the transfer to the resulting winding roller 6 takes place in the so-called nip 8, which forms during the illustrated main winding phase between the carrier drum 2 and the winding roller 6.

The drum 6 is guided by means of a transport device 9 comprehensive storage 10 along a preferably horizontal guide track 11, for example by means of a threaded spindle or a similar drive.

In the lower region of the winding machine 1 an air squeezing device 12 is attached, which has at least one Luftabquetschelement 13 and which can be applied to the winding roller 7 upon reaching a desired layer thickness S (double arrow). The Luftabquetscheinrichtung 12 is usually applied during the last sequences of the main winding phase to the winding roller 7 and then left during the Endwickelphase with open nip 8 at her.

Furthermore, the transport device 9 in the region of the two material web edges each have a transport carriage 14.1, 14.2, each with a guide track 15 for a Luftabquetscheinrichtung 12 supporting lifting device 16, which includes a cross member 17 which extends from the driver-side transport carriage 14.1 to the drive-side transport carriage 14.2 and on which a drive 18 for the vertical method (double arrow) of the lifting device 16 is provided. The drive 18 is of course associated with a corresponding control / regulating device known to the person skilled in the art.

2 shows a perspective view of a preferred embodiment of the Luftabquetscheinrichtung 12 according to the invention.

The Luftabquetscheinrichtung 12 includes, as already stated, a lifting device 16 with a cross member 17 to which a drive 18 for the vertical method (double arrow) is mounted. The cross member 17 extends from the guide side transport carriage 14.1 to the drive-side transport carriage 14.2 and is guided on both sides in a respective guide track 15, which is arranged on the respective transport carriages 14.1, 14.2.

The drive 18 of the lifting device 16 comprises at least two opposing drive systems 19.1, 19.2, each having at least one preferably fixedly mounted drive unit 20.1, 20.1 and at least one of the respective drive unit 20.1, 20.2 acted upon force transmission element 21.1, 21.2, the end with one of the two transport carriages 14.1, 14.2 is connected. The one end connection 22.1 of the force transmission element 21.1, 21.2 is above and the other end connection 22.2 is arranged below the respective vertical end position of the cross member 16.

The respective drive system 19.1, 19.2 shown in FIG. 2 each has a double-acting drive unit 20.1, 20.2 and two power transmission elements 21.11, 21.12, 21.21, 21.22, of which the respective first power transmission element 21.11, 21.21 between the one transport carriage 14.1 and the double-sided acting drive unit 20.1, 20.2 and the respective second power transmission element 21.12, 21.22 between the double-acting drive unit 20.1, 20.2 and the other transport carriage 14.2 is arranged.

The double-acting drive unit 20.1, 20.2 is preferably a double-acting cylinder, in particular a pneumatic or hydraulic cylinder, a motor drive unit with two drive pulleys, a linear motion unit, in particular an electromagnetic linear motion unit, or the like.

The force transmission elements 21.11, 21.12, 21.21, 21.22 are designed in such a length that the Luftabquetscheinrichtung 12 supporting lifting device 16 coaxially or approximately coaxial with the winding roll, not shown, and they are preferably a strand of a rope, a chain, a belt, in particular one Tissue or steel bands, or a belt, in particular a heavy duty belt. However, they can of course also be designed in the form of other known power transmission elements from the field of conveying and handling technology.

Furthermore, the two drive units 20.1, 20.2 are arranged centrally or approximately centrally between the two transport carriages 14.1, 14.2 of the transport device 9 on the cross member 17, which is designed as a preferably rectangular and open-end hollow profile 23 with an interior 24. This makes it possible that the essential units of the drive systems 19.1, 19.2 in the interior 24 of the cross member 17 are arranged. Of course, in a further embodiment, the cross member 17 can also be designed as an I-beam or as a T-beam.

The respective drive unit can also be of course designed differently in a further embodiment. For example, it can also be a single-acting cylinder or a motor drive unit with only one drive pinion.

Among the essential units of the drive system 19.1, 19.2 include at least and preferably two deflecting elements 25.1, 25.2, in particular deflection rollers, the at least one force transmission element 21.11, 21.12, 21.21, 21.22 from a horizontal or approximately horizontal curve 26 (double arrow) in at least one vertical or approximately vertical course 27 (double arrow) deflects.

The Luftabquetschelement 13 of Luftabquetscheinrichtung 12 of Figure 2 is frontally and fixedly secured to the cross member 17. However, it can also be fixed in a known manner on the upper side and stationary or upper or front side movable, preferably pivotable and / or displaceable, to the cross member 17. A top side swiveling Luftabquetschelement is for example from the Japanese Patent Application JP 4-153153 A known.

Furthermore, the Luftabquetschelement 13 is formed as a roller assembly 28 having a plurality of roller body segments 28.1, 28.2, 28.3. However, in a further embodiment, the roller arrangement can also be designed as merely a roller body with a cylindrical and / or cambered roller shell.

Moreover, in a further embodiment, the air-squeezing element can be designed as a brush body or as a composite element mounted on a frame with a base body and a low-friction lining attached to the possible contact surface. It may also consist of an arrangement of a plurality of small individual rollers mounted on at least one frame, or of a frame-mounted contact element of the shape of a wing and a low-friction lining.

The two FIGS. 3A and 3B show two longitudinal diagrams of the force transmission elements 21.11, 21.12, 21.21, 21.22 respectively guided over deflecting elements 25.1, 25.2, wherein the adjacent elements are not shown.

In FIG. 3A, the force transmission elements 21.11, 21.12, 21.21, 21.22 are designed such that the lifting device carrying the air squeezing device is arranged coaxially or approximately coaxially with the winding roller.

On the other hand, in FIG. 3B, the force transmission elements 21.11, 21.12, 21.21, 21.22 have a lengthwise design such that the air squeezing device carries the air Lifting device is arranged under a preferably adjustable inclination (height difference H) to the winding roll.

In summary, it should be noted that the invention provides a winding machine for the continuous winding of a material web of the type mentioned, the Luftabquetscheinrichtung is significantly improved in terms of function and reliability at lower cost and with less complexity. The Luftabquetscheinrichtung is characterized in particular by a mechanical freewheel with a mechanical synchronization fuse, the Loste of the mechanical freewheel preferably a value in the range of 0.5 to 100 mm, preferably from 2 to 50 mm, assumes. Due to the mechanical synchronization fuse is also a low control effort compared to conventional devices.

LIST OF REFERENCE NUMBERS

1

winder

2

carrying drum

3

double arrow

4

web

5

lateral surface

6

drummer

7

reel

8th

Nip (winding gap)

9

transport means

10

storage

11

guideway

12

Luftabquetscheinrichtung

13

air-squeezing

14.1, 14.2

transport carriage

15

guideway

16

lifting device

17

crossbeam

18

drive

19.1, 19.2

drive system

20.1, 20.2

drive unit

21.1, 21.2

Power transmission element

21.11, 21.12, 21.21, 21.22

Power transmission element

22.1, 22.2

End connection

23

hollow profile

24

inner space

25.1, 25.2

deflecting

26.27

Course (double arrow)

28

roll arrangement

28.1, 28.2, 28.3

Roller body segment

G

Just

H

height difference

S

layer thickness

Claims (15)

1. Winding machine (1) for continuously winding a material web (4), in particular a paper or board web, on to a spool (6) to form a wound reel (7), having a carrier drum (2) which forms a nip (8) with the wound reel (7), having a mounting (10) which comprises at least one transport device (9) which guides the spool (6) along a preferably horizontal guide track (11), and having a device (12) for squeezing out air, which is fitted in the lower region of the winding machine (1), has at least one element (13) for squeezing out air and which can be set against the wound reel (7) when a desired layer thickness (S) has been reached, the transport device (9) in the region of the two material web edges in each case having a transport slide (14.1, 14.2) each having a guide track (15) for a lifting device (16) carrying the device (12) for squeezing out air, which comprises a crossbeam (17) which extends from the transport slide (14.1) on the operator's side to the transport slide (14.2) on the drive side and on which a drive (18) for the vertical movement of the lifting device (16) is provided,
   characterized in that the drive (18) of the lifting device (16) comprises at least two drive systems (19.1, 19.2) running in opposite directions, each of which has at least one drive unit (20.1, 20.2) and a force transmission element (21.1, 21.2) which can be acted on by the respective drive unit (20.1, 20.2) and, at the end, is connected to one of the two transport slides (14.1, 14.2) in each case, and in that the one end connection (22.1) of the force transmission element (21.1, 21.2) is arranged above and the other end connection (22.2) is arranged below the respective vertical end position of the crossbeam (17).
2. Winding machine (1) according to Claim 1, characterized in that the drive system (19.1, 19.2) has a double-acting drive unit (20.1, 20.2) and two force transmission elements (21.11, 21.12, 21.21, 21.22), of which the first force transmission element (21.11, 21.21) is arranged between the one transport slide (14.1) and the double-acting drive unit (20.1, 20.2), and the second force transmission element (21.12, 21.22) is arranged between the double-acting drive unit (20.1, 20.2) and the other transport slide (14.2).
3. Winding machine (1) according to Claim 2, characterized in that the double-acting drive unit (20.1, 20.2) is a double-acting cylinder, in particular a pneumatic or hydraulic cylinder, a motor drive unit having two drive pulleys, a linear motion unit, in particular an electromagnetic linear motion unit, or the like.
4. Winding machine (1) according to Claim 2 or 3, characterized in that the lengths of the force transmission elements (21.11, 21.12, 21.21, 21.22) are designed in such a way that the lifting device (16) carrying the device (12) for squeezing out air is arranged coaxially or approximately coaxially with respect to the wound reel (7).
5. Winding machine (1) according to one of the preceding claims, characterized in that the drive unit (20.1, 20.2) is arranged on the crossbeam (17) centrally or approximately centrally between the two transport slides (14.1, 14.2) of the transport device (9).
6. Winding machine (1) according to one of the preceding claims, characterized in that the force transmission element (21.1, 21.2; 21.11, 21.12, 21.21, 21.22) is a run of a cable, a chain, a band, in particular a woven or steel band, or a belt, in particular a high-performance belt.
7. Winding machine (1) according to one of the preceding claims, characterized in that the drive system (20.1, 20.2) has at least two deflection elements (25.1, 25.2), in particular deflection rollers, which deflect the at least one force transmission element (21.11, 21.12, 21.21, 21.22) from a horizontal or approximately horizontal course (26) into at least one vertical or approximately vertical course (27).
8. Winding machine (1) according to one of the preceding claims, characterized in that the crossbeam (17) is constructed as a preferably rectangular hollow profile (23) having an internal space (24), and in that the important units of the drive system (20.1, 20.2) are arranged in the internal space (24) in the crossbeam (17).
9. Winding machine (1) according to one of the preceding claims, characterized in that the element (13) for squeezing out air is fixed to the crossbeam (17) in a stationary manner on the top or at the end.
10. Winding machine (1) according to one of Claims 1 to 8, characterized in that the element (13) for squeezing out air is arranged on the top or end of the crossbeam (17) such that it can be moved, preferably pivoted and/or displaced.
11. Winding machine (1) according to one of the preceding claims, characterized in that the element (13) for squeezing out air is constructed as a roll arrangement (28), either with a continuous roll body or with a large number of roll body segments (28.1, 28.2, 28.3).
12. Winding machine (1) according to one of Claims 1 to 10, characterized in that the element (13) for squeezing out air is constructed as a brush element.
13. Winding machine (1) according to one of Claims 1 to 10, characterized in that the element (13) for squeezing out air is constructed as a composite element fitted to a frame, having a base body and a low-friction cover fitted to the possible contact surface.
14. Winding machine (1) according to one of Claims 1 to 10, characterized in that the element (13) for squeezing out air comprises an arrangement of a plurality of small individual rollers, which are fitted to at least one frame.
15. Winding machine (1) according to one of Claims 1 to 10, characterized in that the element (13) for squeezing out air comprises a contact element fitted to a frame, having the shape of an aerofoil and having a low-friction cover.

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