Straightening machine and method for straightening

Abstract

A straightening machine (1) for straightening profiles includes a plurality of straightening rollers (3) arranged opposite each other on both sides of a straightening line and forming a straightening path, at least some of the straightening rollers being arranged on vertically extending straightening shafts (4) such that they can be horizontally and/or axially adjusted with respect to a profile that is moved in the straightening path. At least some of the straightening shafts (4) can be hydraulically horizontally and/or axially adjusted.

Claims

1.-15. (canceled)

16. A straightening machine (1) for straightening profiles, comprising: a plurality of straightening rollers (3) arranged offset opposite one another on both sides of a straightening line and forming a straightening path, at least some of the straightening rollers being arranged on vertically extending straightening shafts (4) such that they can be horizontally and/or axially adjusted in relation to a profile that is moved in the straightening path, wherein at least some of the straightening shafts (4) are individually hydraulically horizontally and/or axially adjustable.

17. The straightening machine (1) according to claim 16, wherein at least one straightening shaft (4) for horizontal adjustment is arranged to be movable about a vertical pivot axis (23) on a horizontal circular arc section with respect to the straightening line.

18. The straightening machine (1) according to claim 16, wherein at least one straightening shaft (4) is pivotably mounted in a machine frame (2) of the straightening machine (1).

19. The straightening machine (1) according to claim 18, wherein the at least one straightening shaft (4) is held in at least one pivot bearing of the machine frame (2).

20. The straightening machine (1) according to claim 17, wherein the at least one pivotably mounted straightening shaft (4) has an abutment on an opposite side of the straightening line.

21. The straightening machine (1) according to claim 17, wherein the at least one pivotably mounted straightening shaft (4) is adjustable via at least one hydraulic piston/cylinder arrangement, which is pivotably articulated on an opposite side of the straightening line.

22. The straightening machine (1) according to claim 16, wherein at least some of the straightening shafts (4) are driven individually.

23. The straightening machine (1) according to claim 16, further comprising an adjustment force control and/or position control of at least one straightening shaft (4).

24. The straightening machine (1) according to claim 16, wherein the straightening machine (1) is a vertical straightening machine.

25. A method for straightening profiles in a straightening machine (1), comprising: straightening a profile by a plurality of straightening rollers (3) on vertically extending straightening shafts (4), by individually and independently hydraulically horizontally and/or axially adjusting the straightening rollers (3) against a profile on both sides of a straightening line in a straightening path while applying a straightening force.

26. The method according to claim 25, wherein at least some straightening rollers (3) are adjusted via a pivot point bearing.

27. The method according to claim 25, wherein the straightening rollers (3) are each driven individually.

28. The method according to claim 25, wherein the straightening rollers (3) arranged on one side of the straightening line can be actively adjusted horizontally, whereas the straightening rollers (3) provided on an opposite side of the straightening line are mounted horizontally in a fixed position.

29. The method according to claim 25, wherein an adjustment force and/or an adjustment position of the straightening rollers (3) is recorded and/or controlled by pressure sensors and/or position sensors.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 shows a top view of the straightening machine.

[0029] FIG. 2 shows an enlarged section of FIG. 1.

[0030] FIG. 3 shows a perspective view of the straightening machine with a rail profile extending inside the straightening machine.

[0031] FIG. 4 shows an enlarged section of the representation in FIG. 2.

[0032] FIG. 5 shows a perspective sectional view of the straightening machine.

[0033] FIG. 6 shows a side view of the straightening machine partially in section.

[0034] FIG. 7 shows an enlarged sectional view through a straightening shaft and straightening roller at the outlet-side end of the straightening machine.

[0035] FIG. 8 shows a sectional view through a straightening shaft and roller of the straightening machine.

DETAILED DESCRIPTION

[0036] The straightening machine 1 shown in FIG. 1 comprises a machine frame 2, which comprises a plurality of straightening tools in the form of straightening rollers 3, which are arranged on vertically extending straightening shafts 4. The straightening rollers 3 form a straightening path, which is aligned with a roller table line 5 of a straightening system in accordance with FIG. 1. The straightening rollers 3 are in each case offset opposite each other in the straightening path. The machine frame 2 can be displaced transversely to the roller table line 5 via displacement cylinders 10, which are designed as hydraulic piston/cylinder arrangements, and can thus be extended from or retracted into the roller table line 5 as required. The straightening machine 1 shown in the exemplary embodiment is designed as a vertical straightening machine. In the roller table line 5, for example, this can be connected upstream or downstream of a horizontal straightening machine. The straightening machine 1 comprises an inlet side guide 6 for a rail profile 7 and an outlet side guide 8. The rail profile 7 is shown in FIG. 3, for example. In the position shown in FIG. 3, this extends in a straightening path formed by the straightening rollers 3. Ideally, the straightening rollers 3 rest against the profile flanks 9 of the rail profile 7 on both sides of the straightening line predetermined by the rail profile 7.

[0037] The straightening machine 1 comprises a total of eight straightening rollers 3 as straightening tools, each of which is arranged for co-rotation on a straightening shaft 4. The machine frame 2 comprises a bearing carrier 11 extending parallel to the straightening line and supports 12 arranged on one side of the bearing carrier 11 in each case, which are arranged so that they can be displaced on rails 13 by means of the displacement cylinders 10. The supports 12 are connected by means of a traverse 14 extending parallel to the straightening line. The supports 12 in each case accommodate the inlet side guide 6 and the outlet side guide 8.

[0038] As can be seen from FIG. 2, in the plane of the drawing below the roller table line 5, three straightening rollers 3/straightening shafts 4 are arranged pivotably about a vertical pivot axis 23 (axis that extends into the plane of the drawing), specifically those straightening rollers 3 in FIG. 2 that are arranged below the roller table line 5. The straightening roller 3 that is arranged closest to the outlet side guide 8 of the straightening machine 1 can only be moved horizontally linearly in relation to the straightening line and cannot be pivoted. The four straightening rollers 3 arranged above the roller table line 5 in the plane of the drawing in FIG. 2 are arranged in a horizontally fixed position. As will be described below, all straightening rollers 3 can nevertheless be displaced axially (i.e., in an axis that extends into the plane of the drawing of FIGS. 1, 2 and 4)/adjusted hydraulically. The straightening rollers 3 are arranged in a manner offset opposite each other along the straightening path in such a way that they enable alternating bending on both sides of the rail profile 7. Thereby, three straightening rollers 3 in each case form a triangle of forces, wherein two straightening rollers 3 arranged at a distance from each other in the plane of the drawing above the roller table line 5 form a fixed abutment for the swinging arm adjustment of the opposite straightening roller 3 arranged below/between them.

[0039] It is provided that both the horizontal adjustment movement of some straightening rollers 3 and the vertical/axial adjustment movement of all straightening rollers 3 are effected hydraulically. As already mentioned above, the straightening rollers 3 adjoining the inlet side guide 6 on one side of the straightening line/on one side of the roller table line 5 perform an active horizontal adjustment movement about a vertical pivot axis 23 on a circular arc section, whereas the opposite straightening rollers 3 in each case are mounted in a fixed position in the bearing carrier 11 in this respect.

[0040] As can be seen in particular from the illustration in FIG. 5, the straightening rollers 3, which can be displaced in the manner of a swing arm, are in each case arranged in a co-rotating manner on a correspondingly displaceable straightening shaft 4, wherein the relevant straightening shaft 4 is pivotably articulated by means of a bearing piece 15 to a tension rod 16, the end of which extending away from the straightening shaft 4 forms a piston 17 of a hydraulic cylinder 18, which is pivotably fastened by means of a pin 19 in a bearing housing 20 on the side of the bearing carrier 11 remote from the relevant straightening shaft 4.

[0041] Pressurizing the cylinder 18 with a hydraulic fluid causes a displacement of the tension rod 16 transverse to the rail profile 7 and thus a displacement of the straightening rollers 3 in the direction of the profile flank 9 of the rail profile 7 facing the relevant straightening roller 3. Thereby, the straightening roller 3 moving on the circular arc section exerts a straightening force transverse to the straightening line/longitudinal extension of the rail profile 7 on the profile flank 9 of the rail profile 7 facing the straightening roller 3. A corresponding counterforce is exerted by the adjacent opposite straightening roller 3 on the opposite profile flank 9 of the rail profile 7.

[0042] A view in the direction of the straightening line/the roller table line 5, which shows the relative position of two straightening shafts 4/two opposite straightening rollers 3 in relation to the rail profile 7, is shown in FIG. 7.

[0043] With the exemplary embodiment described, the straightening rollers 3 rest against the profile flanks 9 of the rail profile 7 in each case. However, the straightening machine 1 can be designed such that the profile to be straightened, in this case the rail profile 7, can also be guided through the straightening rollers 3 such that the rail profile 7 can also be straightened with respect to its axis with the greater moment of resistance.

[0044] As already mentioned above, each of the straightening shafts 4 can be rotated by means of an individual motor 21 via an angular gear 22 in each case.

[0045] As already noted above, all straightening shafts 4 of the described exemplary embodiment are axially hydraulically adjustable, but it can also be provided that one or another straightening shaft 4 is mounted in an axially fixed/axially non-adjustable manner.

[0046] The fact that each of the straightening shafts 4 with the straightening rollers 3 arranged in a rotationally fixed manner on them can be individually adjusted axially and/or radially hydraulically makes it possible to record and control and/or regulate the individual positions of the straightening rollers 3 both axially and horizontally via corresponding position sensors and their adjustment force via corresponding pressure measuring devices. The adjustment forces can be recorded via a central regulation and control system. The recorded adjustment force can be used to draw immediate conclusions as to whether, for example, all straightening rollers 3 are axially in alignment and correctly aligned with respect to the rail profile 7.

[0047] As can be seen in particular from the combined view of FIGS. 3 and 5, the pivoting arrangement of a part of the straightening shafts 4 results in an adjustment movement in the manner of a swing arm/in the manner of scissors, which is relatively favorable in the machine frame 2 with regard to the abutment forces to be applied. This makes it possible to design the machine frame 2 to be relatively simple while maintaining a high level of stability.

LIST OF REFERENCE SIGNS

[0048] 1 Straightening machine [0049] 2 Machine frame [0050] 3 Straightening rollers [0051] 4 Straightening shafts [0052] 5 Roller table line [0053] 6 Inlet side guide [0054] 7 Rail profile [0055] 8 Outlet side guide [0056] 9 Profile flank [0057] 10 Displacement cylinder [0058] 11 Bearing carrier [0059] 12 Support [0060] 13 Rails [0061] 14 Traverse [0062] 15 Bearing piece [0063] 16 Tension rod [0064] 17 Piston [0065] 18 Cylinder [0066] 19 Pin [0067] 20 Bearing housing [0068] 21 Motor [0069] 22 Angular gear [0070] 23 Vertical pivot axis