DE102011011666A1 - Drive for horizontal strip accumulator of strip system, has winch drum arranged behind fixed point towards two running directions, and cable winch movable transverse to third running direction proportional to length of winch - Google Patents

Abstract

The drive (10) has a fixed deflection roller (16) attached to a looper car (14) that is connected with a motor-driven winch drum (12). The car is movable on a rail at a variable distance to a fixed point (15) in two of running directions (19, 20, 23) of a horizontal strip accumulator. A cable winch (13) made of high-tensile plastic and steel cable is deflected from a deflection pulley around 180 degree to the drum. The drum is arranged behind the fixed point towards the running directions. The winch is movable transverse to the third running direction proportional to length of the winch.

Description

The present invention relates to a drive for a horizontal tape storage a belt system with at least one loop carriage, which is associated with a fixed deflection roller for horizontal deflection of the bands, the loop carriage for forming tape supply loops via a cable on arranged on the loop carriage deflection disks with a fixed point on the one hand and a motor-driven winch drum is connected on the other hand, the loop carriage on a rail at a variable distance to the fixed point in the direction of tape storage movable and the cable of deflecting disks arranged on the storage carriage is deflected by 180 ° to the winch drum.

Such storage reels are required to continuously supply rolling mills in rolling mills with strip material. From the EP 0 773 047 B1 For example, a tape storage is known in which the tape is held on mounted on a loop carriage pulley in a belt loop of variable size.

The EP 0 388 708 B1 discloses a belt store for the continuous operation of rolling mills with a belt loop forming apparatus. Again, the sizes of the tape loops and thus the stockpile of strip material are variable adjustable.

From the DE 1 953 169 is a horizontally lying loop puller for a strip processing plant with idlers between looping carriage and Zuleit- or Ableitrollen known.

Next is from the AT 299103 a tape storage known in which the tape to be stored forms a horizontal supply loop. The loop size is determined by a driven loop carriage.

Usually, the cable is deflected on the storage cart and wound up on a winch drum. In order to achieve the lowest possible winding angle, it is necessary either to arrange the winch drum at a sufficiently large distance from the last deflecting pulley or to redirect the cable shortly before the winch via a winding device and then wind up the cable pull.

Both solutions have considerable disadvantages: in the first variant, a lot of space between the winch and the cable is needed, in the second variant of the cable is also bent, which significantly shortens its life. Furthermore, it can not be ensured that the cable is always bent in the same direction in order not to adversely affect the cable pull life.

The well-known horizontal tape storage with a rail-bound, movable looping carriage have proven successful, but have the disadvantage that their service life is relatively short due to the relatively high wear of the cable guides used.

The cable loop connected to the loop carriage is wound up and unwound during the process on the winch drum of a drum winch. Especially with larger tape storage loops and the associated large need for Seilzuglänge it comes in unfavorable manner to overlap the cable as soon as it is wound onto the winch drum. As a result, the pull rope is squeezed to a considerable extent.

The actual storage wagon is constantly in the balance of power between the strip side pulling sheet metal strip and the winch pulling cable. This results in a considerable force on the rolled-up cable.

This mechanical load leads to a significant reduction in the service life of the cable, which must therefore be replaced before the complete break. This work is time-consuming and cost-intensive, and labor costs include the cost of materials for the cable. Furthermore, the costs for downtime are added, while the rolling mill does not produce.

It is therefore an object of the present invention to provide a drive for a horizontal band storage, with which the cable costs can be reduced by longer downtime and the manufacturing capacity of the rolling mill can be extended. Another object is to provide a compact drive for a tape storage available.

This object is achieved by the features specified in claim 1, in particular in that the winch drum is arranged behind the fixed point transversely to the direction of tape storage and is movable transversely to the direction of the tape storage in proportion to the length of the wound cable. With such a movable winch drum, it is possible to wind the cable parallel to each other groove for each revolution of the winch drum groove. As a result, bruises of the cable due to overlapping effectively avoided and allows a significant extension of the service life of the cable. Furthermore, a particularly compact design is possible by the movable winch drum.

In a particularly preferred embodiment of the drive according to the invention, the cable is wound on the winch drum arranged side by side parallel to one another. This ensures that the cable does not overlap with each rotation of the winch drum and is thus crushed.

In a further particularly preferred embodiment of the drive according to the invention the loop carriage is assigned a horizontally arranged in the belt running deflection pulley, which deflects the coming of the fixed point, parallel to the running direction of the tape storage cable pull by 180 ° to the winch drum of the drum winch. The advantage here is that the cable is deflected only over a deflection plate and thus the cable is always bent in the same direction. The service life of the cable is thereby significantly extended.

According to a particularly preferred embodiment of the drive according to the invention, it is provided to lead the cable in a loop extending from the winch drum via at least two laterally arranged on the loop carriage vertically arranged deflecting pulleys parallel to the running direction of the tape storage via at least one Seilumlenkstation.

The ends of the cable loop are wound on the winch drum, which in turn can be moved othogonal to the strip running direction. As a result, both ends of the loop of the cable are wound parallel next to each other, without being squeezed.

In a further embodiment of the drive according to the invention the Seilumlenkstation is provided with parallel and transverse to the direction of the tape storage horizontally arranged deflection. With such a deflection can be realized a cable loop whose windward ends are pulled onto the winch drum. Since the occurring tensile force is distributed to two cables, it is possible to reduce the cross section of the cable. A cable with a smaller cross section is cheaper to purchase and maintain.

In order to avoid tearing of the band and / or the cable is provided in a further advantageous embodiment of the drive according to the invention, the fixed point and / or Seilumlenkstation assign a Zugkraftbegrenzer that releases the cable in case of overload.

According to an advantageous embodiment of the drive according to the invention the Zugkraftbegrenzer is connected to a Notabschaltvorrichtung.

Furthermore, it is provided that the traction cable of the cable consists of a high-strength plastic. Also, cables are made of a composite material, such as plastic-metal mesh or a mixture of different plastics. These can be designed to be elastic or traction-stable.

In another embodiment, it is provided that the traction cable of the cable is a steel cable.

The invention is explained in more detail below by means of exemplary embodiments with reference to the accompanying drawings. Show it:

1 a schematic representation of an embodiment of the drive according to the invention for a tape storage, with a loop carriage whose cable guide is provided with deflecting to deflect the cable towards a drum winch;

2 the schematic representation of another embodiment of the drive according to the invention for a tape storage, with a loop carriage, the cable guide is provided a Seilumlenkstation with two deflecting pulleys for deflecting the cable loop towards a drum winch.

As the 1 and the 2 show, there is the drive 10 essentially from a drum winch 11 , on the winch drum 12 a cable 13 can be wound up. The cable 13 is on the one hand with a looping cart 14 and on the other hand with a fixed point 15 connected.

On the looping cart 14 is a tape diverter 16 intended. The band deflection roller 16 deflects a sheet metal strip to be rolled in a strip line, not shown 17 , Preferably a steel strip, from an incoming, preferably horizontal direction 19 about 180 ° in the opposite, returning running direction 20 around.

The looping cart 14 moves at a variable distance in the directions of travel 19 and 20 of the sheet metal strip 17 to the drum winds 11 There and back, with a strap loop 17a is trained. The looping cart 14 is on rails 18 in the tape directions 19 and 20 traversable.

As the 1 Werter shows is on the top 21 of the looping cart 14 a horizontally arranged deflection pulley 22 intended. The deflection pulley 22 steers that from the fixed point 15 coming cable turn 180 ° on the winch drum 12 the drum winds 11 around.

During winding and unwinding, the drum winds 11 across the directions 19 respectively. 20 method. The opposite directions of travel 23 the drum winds 11 across the directions 19 and 20 of the sheet metal strip 17 are indicated by a double arrow.

The 2 shows a drive according to the invention 10 for a horizontal tape storage in another embodiment. This is the cable 13 in a big loop 24 guided and his two free ends 25 and 26 together on the winch drum 12 the drum winds 11 wound up or unwound.

In this embodiment, the cable is on the loop carriage 14 redirected twice. The cable 13 This is about two on the outside 27 and 28 in the longitudinal direction of the looping carriage 14 vertically arranged deflection pulleys 29 and 30 in the direction of the drum winds 11 diverted. This is to guide the cable 13 as a benchmark a Seilumlenkstation 31 intended.

In this embodiment, the Seilumlenkstation 31 from two parallel to each other across the respective direction 19 and 20 of the sheet metal strip 17 arranged deflection pulleys 32 and 33 , The deflecting discs 32 and 33 are so to the pulleys 29 and 30 of the looping cart 14 arranged that the Ablauftangente or Auflauftangente the deflection discs 32 and 33 and the pulleys 29 and 30 aligned with each other, so that the cable pull 13 also always aligned between the pulleys 32 and 33 respectively. 29 and 30 runs.

Thereby, it is both in the embodiment according to 1 as well as in the embodiment according to 2 possible, the cable 13 every turn of the winch drum 12 the drum winds 11 Groove for groove parallel to unwind, without the pull rope overlaps and is pinched or crushed.

The benchmark ( 15 ) and / or the Seilumlenkstation ( 31 ) a Zugkraftbegrenzer (not shown) is assigned, which in case of overload the cable ( 13 ) to break the cable ( 13 ) to prevent. The Zugkraftbegrenzer (not shown) is connected to a Notabschaltvorrichtung (not shown, which switches off the tape storage, if necessary.

LIST OF REFERENCE NUMBERS

10

drive

11

drum winch

12

winch drum

13

cable

14

loop car

15

benchmark

16

strip guide roller

17

metal strip

17a

tape loop

18

runner

19

Tape direction

20

Tape direction

21

top

22

deflection plate

23

Process direction (double arrow)

24

loop

25

free end, right

26

free end, left

27

Outside, right

28

Outside, left

29

lateral deflection pulley, right

30

lateral deflection pulley, left

31

Seilumlenkstation

32

horizontal deflector, right

33

horizontal deflector, left

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0773047 B1 [0002]
• EP 0388708 B1 [0003]
• DE 1953169 [0004]
• AT 299103 [0005]

Claims (9)

Drive for a horizontal tape storage a belt system, with at least one loop carriage, which is associated with a fixed deflection roller for horizontal deflection of the bands, the loop carriage for training tape supply loops via a cable on arranged on the loop carriage deflecting a fixed point on the one hand and with a motor-driven winch drum on the other is connected, the loop carriage on a rail at a variable distance to the fixed point in the direction of tape storage movable and the cable is deflected by arranged on the storage carriage deflecting by 180 ° to the winch drum, characterized in that the winch drum ( 12 ) behind the benchmark ( 15 ) to the direction ( 19 . 20 ) of the tape storage is arranged, and the winch in proportion to the length of aufwickelndem cable ( 13 ) across the direction of travel ( 23 ) of the tape storage is movable. Drive for a horizontal tape store according to claim 1, characterized in that the cable ( 13 ) on the winch drum ( 12 ) of the drum winch ( 11 ) parallel to each other wound up. Drive for a horizontal strip accumulator according to claim 2, characterized in that the loop carriage ( 14 ) one in the direction of tape travel ( 19 . 20 ) horizontally arranged deflecting disc ( 22 ) associated with that of the fixed point ( 15 ), paraxial to the direction ( 19 . 20 ) of the strip accumulator extending cable ( 13 ) by 180 ° on the winch drum ( 12 ) the drum wind ( 11 ) redirects. Drive for a horizontal tape storage according to claim 1 and 2, characterized in that the cable ( 13 ) in a loop ( 24 ) starting from the winch drum ( 12 ) of the drum winch ( 11 ) over at least two vertically laterally on the loop carriage ( 14 ) arranged deflection pulleys ( 29 . 30 ) parallel to the direction of travel ( 19 . 20 ) of the tape storage in the direction of the drum winch ( 11 ) via at least one Seilumlenkstation ( 31 ) to be led. Drive for a horizontal tape storage according to claim 4, characterized in that the Seilumlenkstation ( 31 ) as parallel and transverse to the direction ( 19 . 20 ) of the strip accumulator horizontally arranged deflecting discs ( 32 . 33 ) is trained. Drive for a horizontal tape store according to one of the preceding claims 1 to 5, characterized in that the fixed point ( 15 ) and / or the Seilumlenkstation ( 31 ) a Zugkraftbegrenzer is assigned, which in case of overload the cable ( 13 ) releases. Drive for a horizontal tape storage, according to claim 6, characterized in that the Zugkraftbegrenzer is connected to a Notabschaltvorrichtung. Drive for a horizontal tape store according to one or more of claims 1 to 7, characterized in that the cable ( 13 ) consists of a high-strength plastic. Drive for a horizontal tape store according to one or more of claims 1 to 7, characterized in that the cable ( 13 ) consists of a steel cable.

Images