Title of Invention

A ROTOR COILER WITH TWO REELS AND A PROCESS FOR THE OPERATION OF THE ROTOR COILER

Abstract A rotor coiler with two reels mounted in a rotatable rotor, rotatorily drivable Independent of each other, designed for successive, continuous winding of hot-rolled strip each of which reels has a reel mandrel which consists of several expandingly movable segments which are supported on axially displaceable wedge-shaped sliding surfaces and with which the reels are traversable from a starting position into a strip call transfer position respectively by turning the rotor cyclically as well as with devices for guiding incoming hot-rolled strip onto the reel mandrel of the reel standing in the starting position and for applying the same to the reel mandrel until the slip- free holding of the strip, characterized in that the device for guiding and applying the incoming strip is located on a power-driven frame displaceable paraxially to the reel.
Full Text

Rotor coiler
The Invention relates to a rotor coiler with two reels mounted in a rotatable rotor, rotatorily drlvable independent of each other, designed for successive, continuous winding of hot-rolled strip, each of which reels has a reel mandrel which consists of several expandlngly movable segments which are supported on axially displaceable wedge-shaped sliding surfaces and with which the reels are traversable from a starting position Into a strip coil transfer position respectively by turning the rotor cyclically as well as with devices for guiding incoming hot-rolled strip onto the reel mandrel of the reel standing in the starting position and for
applying the same to the reel mandrel until the slip-free holding of the strip.
Through EP-PS 0 221 373, a rotor coiler for cold-rolled strip has already become known, which patent publication, however, has as its object the expanding and/or de-expanding of the reel mandrels.
EP-OS 0 707 904 already discloses a device for winding strip-shaped rolled material which is pressed with an endless toothed chain partially winding round the first turns of a coil to be wound onto the reel mandrel. Through the deflection chain, damage to the strip start and wear of the reel mandrels readily occurs. In particular for the coiling of hot-rolled strip, such deflection chains are not suitable. Although this device for winding strip-shaped rolled material Is claimed to be suitable for revolving reels, there is a risk, should strip be wound for a lengthy period in the winding-on position, of contact occurring between the strip and the swivelled-up device for applying the strip to the reel. By no means is

It possible to wind a complete coil in the winding-on position if necessary.
The present invention Is therefore based on the technical problem of configuring a rotor coiler for hot-rolled-strip in such a way that very thin, fast-running hot-rolled strips can be wound without breaking out during the winding-up and essentially without any damage by the device for windlng-on, whereby it Is to be ensured that a complete coil can be wound in the starting position of the reel if necessary.
To solve this problem, it is proposed according to the invention that the device for guiding and applying the incoming strip is located on a power-driven carriage displaceable paraxially to the reel.
Due to the fact that the device for guiding and applying the Incoming strip Is located on a carriage which Is completely traversable out of the winding position, the device can also no longer be in the way if a complete coil has If necessary to be wound in the starting position of the reel,
In order to prevent damage to the strip and to ensure secure winding-on, pressure rollers as well as deflection shells are located on the carriage, whereby the pressure rollers are preferably driven at a slightly higher speed than the strip speed so that a break-out of the strip cannot occur. Any damage to and jumping by the strip, e.g. at the deflection shells, are prevented In that the deflection shells are pressurized with a medium which Is directed through nozzles into the deflection shells against the strip, preferably in the running direction of the strip, so that the strip is pressed by the pressure medium away from the deflection shell against the reel mandrel.
The Invention Is explained in further detail by means of a drawing in which

Figure 1 shows a rotor coiler with coil to De wouna in staring
position and planned ready-wound coil in strip coll transfer position
Figure 2 shows the device for guiding and applying the incoming
strip into a rotor coiler In cross-sectional representation.
Figure 3 shows the side view of the device for guiding and
applying the Incoming strip,
Figure 4 shows an alternative to the device for guiding and
applying an Incoming strip according to Fig. 2.
Fig. 1 shows a rotor coiler 1 whose reel 2 is shown in the starting position and whose reel 3 is shown in the strip coil transfer position. The hot-rolled strip 4 coming from a mill train (not shown) is pressed by means of a medium 5, e.g. air or water, onto the roller table 6. The speed of the very thin hot-rolled strip can thereby be, for example, 20 m/sec. In the starting position of the reel ?, the hot-rolled strip 4 is wound on. A device 7 for guiding and applying the Incoming strip serves to ensure that the first windings of the coil to be wound can be wound securely and slip-free on the reel 2.
A ready wound coil 8 is shown In the strip coll transfer position on the reel 3. Strip end rollers 9, 10 which are located on arresting shells 11,12 swlvellable against the coil 8 are driven at a slightly lower speed than the strip speed so that it is ensured that the strip end cannot flap round the reel 3 but sits firmly on the coil. On completion of the coil 8, it can be removed from the reel 3 after swinging out the mandrel support bearing (not shown) via the coil truck 13.
The coil which is meanwhile wound on in starting position can, after traversing out the device 7 for guiding and applying the incoming strip (4), be swung from the rotor coiler 1 by swinging the reel 2 to the

position of the reel 3 and that of the reel 3 to the position of the reel 2 into the strip coil transfer position, where the coil 8 Is finish-wound.
Fig. 2 shows the device 7 for guiding and applying the Incoming strip. It consists of a frame 15 traversable on rails 14, on which frame the windlng-on unit 16 Is located. The winding-on unit 16 consists of pressure rollers 17, 18, 19 and deflection shells 20. 21. 22. The pressure roller 17 dnd the deflection shell 20 are attached to a swinging arm 23 and are swivelled with It round a fixed pivot 24 on the frame 15 by means of a piston-cylinder unit 25. Similarly, the pressure roller 18 and the deflection shell 21 are held by a swinging arm 26 which is swivellable by a piston-cylinder unit 28 round a pivot 27. Also the pressure roller 19 and the deflection shell 22 are held by a swinging arm 29 which is swivellable by a piston-cylinder unit 31 round the pivot 30. The piston-cylinder units 25, 28, 31 can swing the pressure rollers 17 through 19 and deflection shells 20 through 22 under position control from a winding-on position into an open position. When the strip start has run In, the piston-cylinder units 25. 28, 31 can be switched to pressure regulation. This provides the possibility for the distance between the reel mandrel and the position-controlled pressure rollers to be decreased from pressure roller 17 to pressure roller 19 before entry of the strip tip into the reel, thus forming an admission hopper.
In the wlndlng-on position, the frame 15 Is fixed by hydraulically driven arresting devices 32 so that no displacement of the frame and of the winding-on unit 16 can occur in axial direction of the reel 2. Alternatively, the fixing can also be done by power-pressurized wedge surfaces by means of the displacement cylinder.
Fig. 3 shows a side view of the frame 14 which has a bracket 33. The bracket 33 supports the motors 34. 34' as well as the gearboxes 35, 35' far the pressure rollers 17,18 and 19, whereby the pressure roller 19 is not to be seen in Fig. 3. Cardan shafts 36. 36' are provided between the gearboxes 35, 35' and the pressure rollers 17, 18, which shafts on the one

hand effect the rotary drive of the pressure rollers 17 and 18. and on the other hand are able to counterbalance the swinging motion of the pressure rollers 17 and 18 and of the deflection shells 20 and 21 (not shown).
Fig, 4 shows a winding-on unit 37 which Is to be seen as an alternative to the windlng-on unit 16. The windlng-on unit 37 Is also held on a frame 15 traversable on rails 14. Here, too, a swinging arm 38 Is provided, which supports the deflection shell 39. At the end of the swinging arm 38, however, a bearing lever 40 Is provided, which carries the pressure roller 17. The bearing lever 40 is swlvellable in opposition to the swinging arm 38 by means of a piston-cylinder unit 41, so that the pressure roller 17 is swivellable towards the reel 2 separately from the bearing shell 39. Thus, for example, the piston-cylinder unit 42 which drives the swinging arm 38 can be position-controlled and the piston-cylinder unit 41 which serves to press the pressure roller 17 can be operated under position and pressure control. The remaining pressure rollers and deflection shells are held and driven In a similar way,
The kinematic system of the separate pressure-roller bearing on bearing levers 40 separately from the deflection shells 39 permits by reason of the low mass a sensitive and rapid-reaction adaptation of the pressure rollers 17 through 19 during the wlndlng-on of thin strips at high speed with simultaneous protection of the strip surface.

Overview of reference numbers
1 Rotor coiler
2 Reel
3 Reel
4 Hot-rolled strip
5 Medium
6 Roller table
7 Device
8 Coil
9 Strip-end roller
10 Strip-end roller
1 1 Arresting shell
12 Arresting shell
13 Coll truck
14 Rail
15 Frame
16 Winding-on unit
17 Pressure roller
18 Pressure roller
19 Pressure roller
20 Deflection shell
21 Deflection shell
22 Deflection shell
23 Swinging arm
24 Pivot
25 Piston-cylinder unit
26 Swinging arm
27 Pivot
28 Piston-cylinder unit
29 Swinging arm

30 Pivot
31 Piston-cylinder unit
32 Arresting device
33 Bracket
34 Motor
35 Gearbox
36 Cardan shaft
37 Winding-on unit
38 Swinging arm
39 Deflection shell
40 Bearing lever
41 Piston-cylinder unit
42 Piston-cylinder unit




1. Rotor coiler with two reels mounted in a rotatable rotor, rotatorily
drivable independent of each other, designed for successive,
continuous winding of hot-rolled strip, each of which reels has a reel mandrel which consists of several expandingly movable segments

free holding of the strip,
characterized in that
the device (7) for guiding and applying the incoming strip (4) is
located on a power-driven frame (15) displaceable paraxially to
the reel (2).
2. Rotor coiler according to claim 1,
characterized in that
the frame (15) is guided on a slldeway.
3. Rotor coiler according to claim 1 or claim 2,
characterized in that
the frame (15) is supported on rails (14).

4. Rotor coiler according to claim 2 or claim 3.
characterized in that
the frame (15) is allocated an arresting device (32) of its effective position and/or extreme position.
5. Rotor coiler according to one of claims 1 through 4.
characterized in that
the frame (15) has power-driven swivellable arms (23, 26. 29. 38) which bear pressure rollers (17. 18. 19) and/or deflection shells (20. 21,22,39).
6. Rotor coiler according to claim 5,
characterized in that
rotary drives for the pressure rollers (17, 18, 19) are located on the frame (15).
7. Rotor coiler according to claim 6,
characterized in that
the rotary drives consist of motors (34), gearboxes (35) and drive shafts (36).
8. Rotor coiler according to one of claims 1 through 7,
characterized in that
a sliding flap swivellable against the run-in roller table is located in the run-in area of the starting position of the reel (2).
9. Rotor coiler according to one of claims 1 through 8,
characterized In that
pressure-medium nozzles directed against the run-in roller table are located in the run-in area of the starting position of the reel (2).

10. Rotor coller according to one of claims 1 through 9,
characterized In that
pressure-medium nozzles (5) directed against the reel mandrel are allocated to the deflection shells
11. Process for 1he operation of a rotor coiler according to one of
claims 1 through 10,
characterized in that
for the reception of a hot-rolled strip (4) to be wound, a free reel mandrel (2) is traversed Into the starting position and, when this position has been reached, the frame (15) is pushed under the reel mandrel (2) and fixed, that subsequently the devices (7) for guiding and applying the hot-rolled strip (4) are swivelled into their effective position, that when the start of the strip has been held on the reel mandrel (2) the devices (7) for guiding and applying the hot-rolled strip (4) are lifted into their zero position and the frame (15) Is then pushed into its extreme position in front of the end face of the reel mandrel (2), releasing the latter, and that during the further winding the reel mandrel (2) Is traversed into its strip coil transfer position by turning of the rotor.
12. Process according to claim 11,
characterized in that
for the holding of the start of the strip on the reel mandrel (2), the latter Is pre-expanded. the pressure rollers (17, 18, 19) are adjusted to the reel mandrel (2) to a gap of approximately four to ten times the strip thickness, the deflection shells (20,21,22, 39) form a gap of approximately 15 to 20 mm to the reel mandrel (2). that the deflection shells (20. 21. 22. 39) are pressurized during the windlng-on procedure by a medium directed against the strip, the reel mandrel (2) is retro-expanded after entry of the strip tip and that, after tension build-up in the strip (4). the pressure rollers (17, 18, 19) and deflection shells (20. 21. 22. 39) are spaced at approximately 300 mm from the reel (2)

13. Process according to claim 12, characterized In that
the expansion movement of the reel mandrel (2) as well as the movement of the pressure rollers (17, 18, 19) and of the deflection shells (20. 21, 22, 39) are executed under position control.
14. Process according to claim 11.
characterized In that
the reel mandrel (2) Is expanded to Its maximum diameter securing a round shape, the pressure rollers (17, 18, 19) ore adjusted to the reel mandrel to a gap which corresponds to the strip thickness + approximately 1 mm, that the deflection shells (20. 21. 22, 39) are pressurized during the winding-on procedure by media directed against the strip (4), that the pressure rollers (17,18,19) are switched successively to pressure after the passing-through of the strip tip. and that after tension build-up in the strip (4) the pressure rollers (17, 18. 19) and deflection shells (20. 21. 22. 39) are spaced at approximately 300 mm from the reel (2).
15. Process according to claim 14,
characterized in that
the expansion movement of the reel mandrel (2) as well as the spacing of the pressure rollers (17. 18. 19) and of the deflection shells (20, 21, 22, 39) from the reel mandrel are executed under position control and that a pressure regulation takes place when the pressure rollers (17. 18. 19) have been switched to pressure.

16. Rotor coiler substantially as herein described, with
with reference to the accompanying drawings.
17. Process for the operation of a rotor coiler,
substant ially as herein described, with reference to
the accompanying drawings.


Documents:

1834-mas-1998-abstract.pdf

1834-mas-1998-claims duplicate.pdf

1834-mas-1998-claims original.pdf

1834-mas-1998-correspondence others.pdf

1834-mas-1998-correspondence po.pdf

1834-mas-1998-description complete duplicate.pdf

1834-mas-1998-description complete original.pdf

1834-mas-1998-drawings.pdf

1834-mas-1998-form 1.pdf

1834-mas-1998-form 19.pdf

1834-mas-1998-form 26.pdf

1834-mas-1998-form 3.pdf


Patent Number 208239
Indian Patent Application Number 1834/MAS/1998
PG Journal Number 27/2007
Publication Date 06-Jul-2007
Grant Date 20-Jul-2007
Date of Filing 13-Aug-1998
Name of Patentee SMS SCHLOEMANN-SIEMAG AKTIENGESELLSCHAFT
Applicant Address EDUARD-SCHLOEMANN-STRASSE 4, 40237 DUSSELDORF.
Inventors:
# Inventor's Name Inventor's Address
1 MARTIN BRAUN NORDOSTSTRASSE 6B, 57223 KREUZTAL.
2 DIETER ROSENTHAL BERGSTRASSE 2a, 57572 NIEDERFISCHBACH.
3 REINHARD IRLE WIESENSTRASSE 1, 57271 HILCHENBACH.
4 ADOLF MULLER HOHSTRASSE 18, 57234 WILNSDORF.
PCT International Classification Number B21D11/06
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 197 36 260.5 1997-08-15 Germany