Device and method for guiding metal strips having wear bodies

Abstract

A device for lateral guidance (1) of a metal strip (2) moving on a metal belt conveying device, including at least one base body module (7) includes an essentially vertical guiding plane (10), at least one wear body (12) having a wear surface (12a) can be rotated into several defined rotational positions in a controlled manner. The wear surface (12a) is substantially planar, and in all of its defined rotational positions, is parallel to the guiding plane (10). Further, a method for lateral guidance of metal strips (2) moving on a metal belt conveying device includes, after a first metal strip has passed through the metal belt conveying device, and prior to a second metal strip entering the metal belt conveying device, the wear body (12) is rotated from a first to a second defined rotational position in a controlled manner, wherein in all defined rotational positions, the wear surface (12a) is parallel to the guiding plane (10).

Claims

1. A device for laterally guiding a metal strip running over a metal-strip conveying device, the device comprising: at least one main body module having a substantially vertical guide plane, the guide plane being positioned and oriented to face toward a lateral edge of the metal strip as the metal strip is conveyed by the conveying device; at least one wear body which is located to be passed by the lateral edge of the metal strip as the metal strip is conveyed by the conveying device, the at least one wear body having a respective wear face, which may be contacted by the lateral edge of the metal strip being conveyed, the at least one wear body and the respective wear face thereof is rotatable to a plurality of defined rotary positions which exposes different areas of the wear face to control the lateral edge of the metal strip; and the wear face is substantially planar, and in all rotary positions, the wear face is parallel with the guide plane.

2. The device as claimed in claim 1, further comprising a plurality of the wear bodies, each wear body having a respective wear face, each wear body and the wear face thereof is rotatable to a plurality of the defined rotary positions, and at least one of the wear bodies is rotatable independently of others of the wear bodies to the rotary positions thereof.

3. The device as claimed in claim 1, further comprising a plurality of the wear bodies, each wear body having a respective wear face, each wear body and the wear face thereof is rotatable to a plurality of the defined rotary positions, and at least one of the wear bodies is rotatable dependent on at least one other of the wear bodies.

4. The device as claimed in claim 1, further comprising at least one of the wear bodies is adjustable for adjusting the spacing of the wear face thereof from the guide plane of the main body module and toward or away from the lateral edge of the metal strip.

5. The device as claimed in claim 4, further comprising for at least one of the wear bodies, the spacing of the wear face from the guide plane of the main body module is readjustable independently of the spacing from the guide plane of the other wear bodies.

6. The device as claimed in claim 4, further comprising a plurality of the wear bodies for which the spacing of the wear faces thereof from the guide plane of the main body module is readjustable, and the spacing of at least one of the wear bodies is readjustable dependent on at least one other of the wear bodies.

7. The device as claimed in claim 1, further comprising at least one of the wear faces having a clearance into it or an opening in it; at least one wear-body guide roller located and configured to be guided through the clearance of the at least one wear face of a wear body or through the opening of the at least one wear face of a wear body to be received in the clearance or the opening and there at least partially protrude from the wear face.

8. The device as claimed in claim 7, further comprising at least one wear body guide roller which is adjustable to at least: one parking position where the metal strip cannot be guided by the wear body guide rollers and one guiding position at which the metal strip may be guided by the wear body guide rollers.

9. The device as claimed in claim 8, wherein in the guiding position, a roller face of the wear body guide roller is guided through the clearance of the wear face of a wear body or guided in the opening of the wear face of a wear body and the roller at least partially protrudes from the wear face.

10. The device as claimed in claim 1, further comprising at least some of the wear bodies are laterally chamfered and at the chamfers are there not parallel to the guide plane, but the chamfers are there inclined away from the lateral edge of the metal strip outward of the wear face on the wear bodies.

11. The device as claimed in claim 1, further comprising at least one wear face has guide contours located and configured for guiding the metal strip when the metal strip engages the at least one wear face.

12. The device as claimed in claim 1, further comprising at least one of the wear bodies has at least one support material having a coating thereon.

13. The device as claimed in claim 1, further comprising each of the wear bodies is symmetrical such that the wear body comprises at least two identically developed opposite sides, and each side having a respective one of the wear faces.

14. The device as claimed in claim 1, further comprising the wear body has at least one guide elevation, a run-up slope or a discrete elevation located and configured for guiding the lateral edge of the strip out of its path of travel past the wear body.

15. The device as claimed in claim 1, further comprising at least one rotatable wear body guide roller supported by at least one of the wear bodies at the wear face thereof wherein the wear body guide roller at least partially protrudes from the respective wear face, and the at least one wear body guide roller is movable along with movement of the respective wear face to be selectively in position to guide the conveying of the metal strip or out of position to guide the conveying of the metal strip.

16. A method for laterally guiding a metal strip running over a metal-strip conveying device, comprising: providing a device for laterally guiding the metal strip, wherein the device comprises a main body module having a guide plane facing a lateral edge of the metal strip being guided and at least one wear body at the main body module, and the wear body having a substantially planar wear face; the method comprising: passing a metal strip, which is the first metal strip of the method, through the metal strip conveying device; after the first metal strip has passed through the metal-strip conveying device and before a second metal strip begins to pass through the metal-strip conveying device, rotating the wear body from a defined first rotary position to a defined second rotary position thereof, wherein the wear face in all of the rotary positions of the respective wear body is parallel with the guide plane.

17. The method as claimed in claim 14, further comprising: performing a first lateral guiding phase on at least one lateral side of the metal strip applied by means of the main body module and optionally applied by wear bodies and/or by wear-body guide rollers; and performing a subsequent second lateral guiding phase comprising lateral guiding on at least one side of the metal strip only by the wear bodies.

18. The method as claimed in claim 17, further comprising, after the first lateral guiding phase, readjusting at least one of the wear bodies and/or readjusting the at least one main body module to a position in which the wear face of the wear body lies outside the guide plane.

19. The method as claimed in claim 17, further comprising, during the second lateral guiding phase, performing the lateral guiding on at least one side of the metal strip by a plurality of the wear bodies, and wherein during the second lateral guiding phase, at least one of the wear bodies is caused to lose contact between the wear face of the one wear body as the metal strip is readjusted away from the metal strip; then rotating the one wear body about a rotation axis to a new rotary position, and then while restoring contact between the wear face of the one wear body and the metal strip by readjusting the wear body toward the metal strip.

20. The method as claimed in claim 17, further comprising, during the lateral guiding, switching between the sliding guiding by the wear bodies and rolling guiding by the rollers.

21. The method as claimed in claim 16, wherein the device for laterally guiding comprises at least one wear-body guide roller, the method comprising: performing a first lateral guiding phase on at least one lateral side of the metal strip applied by the main body module and optionally applied by wear bodies and/or wear-body guide rollers; and performing a subsequent second lateral guiding phase comprising lateral guiding on at least one side of the metal strip; only by wear-body guide rollers or; by wear bodies and wear-body guide rollers.

22. The method as claimed in claim 21, further comprising the lateral guiding comprises both sliding guiding by the wear bodies and rolling guiding by the rollers.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will be described hereunder in an exemplary manner by means of a plurality of schematic figures.

(2) FIG. 1 schematically shows a conventional device for laterally guiding a metal strip running over a roller table.

(3) FIG. 2 shows part of a wear strip of a run-in ruler of a known device for laterally guiding a metal strip running over a roller table.

(4) FIG. 3 shows a fragment of a device according to the invention for laterally guiding a metal strip running over a roller table

(5) FIG. 4 shows a device as in FIG. 3, in a sectional view.

(6) FIG. 5 shows wear bodies for a device according to the invention, disposed in clearances of the main body module.

(7) FIG. 6 shows a view along the section 6-6 of FIG. 5.

(8) FIG. 7 shows a device according to the invention, having wear-body guide rollers in the parking position.

(9) FIG. 8 shows a view along the section 8-8 of FIG. 7.

(10) FIG. 9 shows a device according to the invention, having wear-body guide rollers in the guiding position.

(11) FIG. 10 shows a view along the section C-C of FIG. 9.

(12) FIG. 11 shows a figure which is largely analogous to FIG. 6, having a wear face which in terms of spacing from the guide plane has been readjusted.

(13) FIGS. 12 and 13 show openings and clearances of the wear face of a wear body.

(14) FIGS. 14 to 20 show various embodiments of a wear body.

DESCRIPTION OF EMBODIMENTS

(15) FIG. 1 schematically shows a conventional device 1 for laterally guiding a metal strip 2 running over a roller table, in a perspective view from above. The metal strip 2 runs in the direction of the arrow in the direction of a driver 3 of a coiling plant. Said metal strip is laterally guided by means of the run-in rulers 4a, 4b.

(16) FIG. 2 shows part of a wear strip 5 of a run-in ruler 4a or 4b of a known device 1 of FIG. 1, for laterally guiding a metal strip running over a roller table. A metal strip is guided by means of the guide plane 6. The wear strip here is worn-out and needs to be replaced.

(17) FIG. 3 shows a fragment of a device according to the invention for laterally guiding a metal strip running over a roller table as a metal-strip conveying device. Of the device, a main body module 7 comprised of a support body 8 carrying a wear plate 9 having a substantially vertical guide plane 10 is shown. Also illustrated are roller table rollers 11a, 11b, 11c, 11d. A wear body 12 of which the wear face 12a in the illustration lies in the same plane as the guide plane 10 is also illustrated. The wear body 12 is rotatable in a controlled manner to a plurality of defined rotary positions. The wear face 12a is substantially planar and in all defined rotary positions is parallel with the guide plane 10. The wear body 12 is a round disk of which the base area forms the wear face of the wear body. The wear body 12 is disposed in a largely round clearance of the wear plate 9; since the wear plate 9 does not fully encompass the wear body 12, the clearing is not entirely round, however, the part comprising the wear body 12 is part of a circle.

(18) Also seen are chamfers between the base area and lateral faces of the round disks of the wear body 12. The chamfers, as compared to wear bodies without chamfers, avoid the risk of the metal strip being skewered on the periphery between the lateral faces and the base area.

(19) In an example which is analogous to FIG. 3 and which is not separately illustrated, the wear body is pivotable about a rotation axis which is perpendicular to the guide plane. The rotation axis is in the center of the round disk. The rotation axis is disposed above the center, to be between the rotation axes of the roller table rollers.

(20) FIG. 4 shows a device as in FIG. 3 in a sectional view. The main body module 7, comprised of a support body 8, and the wear plate 9, in the sectional view, having the guide plane 10 are seen. The wear body 12 is fastened to a readjustment device, presently a rotary readjustment module 13, which is fastened in the main body module 7. The wear body 12 may be rotated in a controlled manner to a plurality of defined rotary positions by the rotary readjustment module 13. Moreover, by means of the rotary readjustment module 13 the spacing of the wear face 12a from the guide plane 10 of the main body module 7 may be readjusted wherein the wear body 12 may be moved out of the guide plane 10 and back into that plane, this not being separately illustrated.

(21) FIG. 5 shows wear bodies 15a, 15b, 15c, 15d which are disposed in largely round clearances of a main body module 14. Roller table rollers 16a, 16b, 16c are likewise illustrated. The wear bodies 15a, 15b, 15c, 15d are round disks and their base areas form the wear faces 17a, 17b, 17c, 17d of the wear bodies 15a, 15b, 15c, 15d. The wear bodies 15a, 15b, 15c, 5d are rotatable in a controlled manner to a plurality of rotary positions, wherein their substantially planar wear faces are parallel with the guide plane 19 in all defined rotary positions. The metal strip 18 presently a steel strip, is guided by the guide plane 19 and the wear bodies 15a, 15b, 15c, 15d. The wear faces 17a, 17b, 17c, 17d of the wear bodies lie in the guide plane 19. Also illustrated are a plurality of wear tracks 20a, 20b, 20c for the wear body 15b, which have already been carved by the metal strip into the wear bodies 15b after the bodies have been repeatedly rotated in a controlled manner to various defined positions.

(22) FIG. 6 shows a view along the section B-B of FIG. 5, in the direction of the wear body 15c, wherein the guide plane 19 is not separately illustrated.

(23) FIG. 7 shows a device which is largely analogous to that of FIG. 5, having wear bodies 21a, 21b, 21c, 21d. These also are wear-body guide rollers 22a, 22b, 22c, 22d which are adjustable to at least one parking position or one guiding position. The wear-body guide rollers in FIG. 7 are shown in the parking position. The metal strip 23, presently a steel strip, is guided by the guide plane 24 and the wear bodies 21a, 21b, 21c, 21d which have the wear faces lying in the guide plane 24.

(24) FIG. 8 shows a view along the section 8-8 of FIG. 7, in the direction of the wear body 21c, wherein the guide plane 24 is not separately illustrated.

(25) FIG. 9 shows a view which is largely analogous to that of FIG. 7 and in which reference signs for the parts which have been described in FIG. 7 have been dispensed with for reasons of clarity. The wear-body guide rollers 22a, 22b, 22c, 22d of FIG. 7 are in the guiding position. The metal strip 23 is guided by the wear-body guide rollers 22a, 22b, 22c, 22d.

(26) FIG. 10 shows a view along the section 10-10 of FIG. 9, in the direction of the wear-body guide roller 22c, wherein the guide plane is not separately illustrated.

(27) The roller faces of the wear-body guide rollers 22a, 22b, 22c, 22d in FIGS. 7 to 10, when viewed from the wear face in the direction of the metal strip, protrude from the wear face both in the parking position as well as in the guiding position. Said roller faces are guided through an opening of the wear face of the respective wear bodies 21a, 21b, 21c, 21d and protrude from this wear face.

(28) By pivoting the wear bodies 21a, 21b, 21c, 21d, the position of the openings of the wear faces is modified between FIG. 7 and FIG. 9. The wear-body guide rollers 21a, 21b, 21c, 21d protruding from these openings are accordingly repositioned and after pivoting of the wear bodies 21a, 21b, 21c, 21d protrude from these openings. Adjusting the latter to the guiding position is performed accordingly.

(29) The wear-body guide rollers 22a, 22b, 22c, 22d, for example, may be in each case fastened to rotary readjustment modules, as provided with the reference sign 13 in FIG. 4, and by way of the latter may be rotatable and readjustable to various positions. The wear-body guide rollers could also be fastened to the wear bodies or to the main body module.

(30) FIG. 11 shows a figure which is largely analogous to that of FIG. 6. In addition to FIG. 6, part of the guide plane having the reference sign 25 is also illustrated. The wear body 15c, having a solid border, is illustrated in a position in which the wear face 17c thereof lies in the same plane as the guide plane 25. The wear body 15c, having a dashed border, is illustrated in a position in which the spacing of the wear face thereof from the guide plane has been readjusted, shown presently increased. The wear body, by movement which is perpendicular to the guide plane is pushed out of the guide plane by a readjustment device, not shown in detail.

(31) FIGS. 12 and 13 show the difference between a clearance of the wear face of a wear body and an opening of the wear face of a wear body.

(32) An opening of the wear face is understood to mean a hole 27 in the wear face 28, which is entirely surrounded by the wear face 28, as shown in FIG. 12. By contrast, FIG. 13, having a dashed border, shows a clearance 29 of the wear face 30, which is not entirely surrounded by the wear face 30.

(33) FIG. 14 shows a fragment of an embodiment of a wear body 30 in the non-worn state. The wear body 30 is a round disk having a planar wear face 31. The wear body is chamfered on the periphery 32.

(34) FIG. 15 shows a fragment of an embodiment of a wear body 33 in the non-worn state. The wear body 33 is a round disk having a substantially planar wear face 34. A guide spline 35 which is present from the outset in the wear face 34 as guide contours for guiding the metal strip is illustrated. The wear body is chamfered on the periphery 36.

(35) FIG. 16 shows a wear body 33 according to FIG. 15, in a lateral view compared to FIG. 15, onto the wear face 34. A plurality of guide splines 35 are seen.

(36) FIG. 17 shows a fragment of an embodiment of a wear body 36 in the non-worn state. An external and comparatively soft layer 38 for configuring guide splines during operation is present on a support material 37. A comparatively hard layer 39 which impedes deeper cuts lies between this external layer 38 and the support material 37.

(37) These two surface coatings, i.e. layer 38 and layer 39, are attached on either side of the wear body 36 so as to be symmetrical, such that the wear body 36 after wear on one side may be simply reversed and the other and identically specified side is thus turned to face the metal strip and is worn.

(38) FIG. 18 shows a lateral view onto a wear body 40. The wear face 41 thereof extends on the circumference thereof. A plurality of mutually separate and individual elevations 42 from a face 43 of the wear body 40 which lies in the same plane as the wear face 41 are present outside the wear face 41 as guide elevations 42.

(39) FIG. 19 shows a fragment of a section along the line A-A through the wear body 40 of FIG. 18. The profile of a guide elevation 42 is seen. Also, a guide elevation 44 is likewise present on the other side of the wear body 40. The body 40 is configured as a round disk.

(40) FIG. 20 shows a fragment of a wear body 45 having an elevation 47 in relation to the plane of the wear face 46 on a periphery of the wear face 46, so as to be beside the wear face 46. The elevation 47 is present on this entire periphery of the wear face 46. This elevation is embodied such that its height increases as the spacing from the periphery of the wear face increases, producing a so-called run-up slope 48. During operation, the run-up slope 48 and also the guide elevations 42 and 44 from FIGS. 18 and 19 constrict the lateral space for the metal strip. The constriction forms a resistance to climbing of the metal strip.

(41) Although the invention has been illustrated and described in more detail by the preferred exemplary embodiments, the invention is not limited by the disclosed examples, and other variants may be derived therefrom by a person skilled in the art without departing from the scope of the invention.

LIST OF REFERENCE SIGNS

(42) 1 Device for laterally guiding a metal strip running over a roller table 2 Metal strip 3 Driver 4a, 4b Run-in rulers 5 Wear strip 6 Guide plane 7 Main body module 8 Support body 9 Wear plate 10 Guide plane 11a, 11b, 11c, 11d Roller table rollers 12 Wear body 12a Wear face 13 Rotary readjustment module 14 Main body module 15a, 15b, 15c, 15d Wear body 16a, 16b, 16c Roller table rollers 17a, 17b, 17c, 17d Wear faces 18 Metal strip 19 Guide plane 20a, 20b, 20c Wear track 21a, 21b, 21c, 21d Wear body 22a, 22b, 22c, 22d Wear-body guide rollers 23 Metal strip 24 Guide plane 25 Guide plane 26 Guide plane 27 Hole 28 Wear face 29 Clearance 30 Wear face 31 Wear face 32 Periphery 33 Wear body 34 Wear face 35 Guide spline 36 Periphery 37 Support material 38 Layer 39 Layer 40 Wear body 41 Wear face 42 Guide elevations 43 Face 44 Guide elevation 45 Wear body 46 Wear face 47 Elevation 48 Run-up slope

LIST OF CITATIONS

Patent Literature

(43) DE1427923

(44) DE69408332T2

(45) U.S. Pat. No. 2,818,954

(46) JP05161917