INTERMEDIATE STAND GUIDE ON A VERTICAL ROLL STAND OF A MILL TRAIN, AND METHOD FOR GUIDING THE ROLLED STOCK USING THE INTERMEDIATE STAND GUIDE

Abstract

The invention relates to an intermediate stand guide (3) on a vertical roll stand (1) of a rolling line for guiding the rolled material into a horizontal roll stand (2) or out of a horizontal roll stand (2) having at least one guide element (4), which is mounted on the vertical roll stand (1) and is adjustable jointly with an adjustment movement of a vertical roll (6) assigned thereto and which follows the adjustment movement of the vertical roll (6), wherein the guide element (4) is arranged set back transversely to the rolling direction by a predefined offset dimension (X′) to the edge of the vertical roll (6) engaged with the rolled material, wherein the guide element (4) is connected to a traverse (5) of the vertical roll stand (1) and the offset dimension (X′) is pre-definable via an installation distance of the vertical roll (6) to the traverse (5) of the vertical roll stand (1).

Claims

1. An intermediate stand guide (3) on a vertical roll stand (1) of a rolling line for guiding the rolled material using at least one guide element (4), which is mounted on the vertical roll stand (1) and is adjustable jointly with an adjustment movement of a vertical roll (6) assigned thereto and which follows the adjustment movement of the vertical roll (6), wherein the guide element (4) is arranged set back transversely to the rolling direction by a predefined offset dimension (X′) to the edge of the vertical roll (6) engaged with the rolled material, wherein the guide element (4) is connected to a traverse (5) of the vertical roll stand (1) and the offset dimension (X′) is pre-definable via an installation distance of the vertical roll (6) to the traverse (5) of the vertical roll stand (1).

2. The intermediate stand guide as claimed in claim 1, characterized in that the installation distance of the vertical roll (6) to the traverse (5) of the vertical roll stand (1) is pre-definable by means of one or more compensation plates (21) of predefined thickness.

3. The intermediate stand guide as claimed in claim 2, characterized in that at least one compensation plate (21) is detachably connected to a chock (7) accommodating the vertical roll (6).

4. The intermediate stand guide as claimed in any one of claims 1 to 3, characterized in that the guide element (4) is fastened on the traverse (5) using an overload safeguard (14).

5. The intermediate stand guide as claimed in any one of claims 1 to 4, characterized in that at least one intended breakpoint and/or at least one other yielding fastening of the guide element (4) is provided as the overload safeguard (14).

6. The intermediate stand guide as claimed in any one of claims 1 to 5, characterized in that the guide element (4) is connected to the traverse (5) of the vertical roll stand via a connecting part (13) preferably designed as a bar.

7. The intermediate stand guide as claimed in claim 6, characterized in that the fixing of the connecting part (13) relative to the traverse (5) is made adjustable transversely to the rolling direction.

8. The intermediate stand guide as claimed in any one of claims 1 to 7, characterized in that the guide element (4) is mounted at least in one upper and/or lower guide bed (16, 17) of a vertical roll stand post (15) of the vertical roll stand (1).

9. The intermediate stand guide as claimed in claim 8, characterized in that the guide element (4) is mounted in a sliding manner in the upper and/or lower guide bed (16, 17) of the vertical roll stand post (15).

10. The intermediate stand guide as claimed in any one of claims 1 to 9, characterized in that the position of the guide element (4) is adjustable, preferably hydraulically, relative to the vertical roll (6).

11. The intermediate stand guide as claimed in any one of claims 1 to 10, characterized in that the guide element (4) has an L-shaped or C-shaped guide profile (12).

12. The intermediate stand guide as claimed in any one of claims 1 to 11, characterized in that the guide element (4) is supported at least on one side on a guide table (19), which is preferably mounted on a horizontal roll stand post (20) of the horizontal roll stand (2).

13. The intermediate stand guide as claimed in claim 12, characterized in that the guide element (4) is supported via at least one plain bearing so it is displaceable on the guide table (19).

14. The intermediate stand guide as claimed in any one of claims 1 to 12, characterized in that the guide element (4) has at least one replaceable wear plate.

15. A method for guiding the rolled material in a rolling line using an intermediate stand guide as claimed in any one of claims 1 to 14, characterized in that the offset dimension (X′) is set via a detected installation distance of the vertical roll (6) to the traverse (5) of the vertical roll stand (1).

16. The method as claimed in claim 15, characterized in that the adjustment movement of at least one vertical roll (6) of the vertical roll stand is monitored by sensors to set and monitor the position of the vertical roll (6) and/or the guide element (4).

17. The method as claimed in any one of claim 15 or 16, characterized in that the movement and/or position of the guide element (4) is monitored relative to the position of the vertical roll (6).

18. The method as claimed in any one of claims 15 to 18, characterized in that the wear of the vertical roll (6) and/or the guide profiles is detected by sensors and taken into consideration in the adjustment of the vertical roll (6) and/or the guide elements (4).

Description

[0040] In the figures:

[0041] FIG. 1 shows a schematic top view of parts of a vertical roll stand having an intermediate stand guide according to the invention and a downstream horizontal roll stand, partially in section, and

[0042] FIG. 2 shows a side view of the arrangement shown in FIG. 1.

[0043] The figures show a part of a rolling line which is designed, for example, as a hot strip line. The rolling line comprises at least one vertical roll stand 1 and a horizontal roll stand 2 connected downstream in the rolling direction. The rolling direction is illustrated in each of the figures using an arrow. The vertical roll stand 1 is used in a known manner to reduce the width of the rolled material, for example in the form of a metal strip, whereas the horizontal roll stand 2 is used in a known manner to reduce the thickness of the rolled material. To guide the rolled material from the vertical roll stand 1 into the horizontal roll stand 2, an intermediate stand guide 3 is provided, which is fastened on the vertical roll stand 1 and effectuates a guide of the rolled material on the inlet side of the horizontal roll stand 2.

[0044] The intermediate stand guide 3 according to the invention comprises two guide elements 4, which are each fastened on a traverse 5 of the relevant vertical roll stand 1. The vertical roll stand 1 comprises a vertical roll stand post 15 and two traverses 5 mounted displaceably therein, on each of which a vertical roll 6 is held. The vertical rolls 6 are each mounted so they are rotatable and drivable in chocks 7. To regulate the clearance between the vertical rolls 6, the chocks 7 are each adjustable toward one another and away from one another using an adjustment device 8. The adjustment devices 8 each comprise at least one adjusting cylinder 9, to which a hydraulic pressure medium can be applied. The guide elements 4 are each arranged set back transversely to the rolling direction by an offset dimension X′ in relation to the front edge of the vertical rolls 6, which is engaged with the rolled material in operation of the rolling line. This offset dimension X′ is initially fixedly predefined. The guide elements 4 are fixedly connected to the respective traverse 5 and each follow the movement of the chocks 7 caused by the adjustment device 8 and thus the infeed movement of the vertical rolls 6.

[0045] The guide elements 4 are each connected using a connecting part 13 designed as a bar to the traverses 5 of the vertical roll stand post. An overload safeguard 14 is provided in each case in the region of the connection. The overload safeguard 14 is expediently designed so that it is either deliberately destroyed and/or is so yielding that the energy of the overload is deliberately changed. For example, a screw connection having intended breakpoints or a resiliently yielding screw connection can be provided as the overload safeguard 14. Furthermore, the guide elements 4 are mounted in a sliding manner in an upper and lower guide bed 16, 17 of the vertical roll stand post 15, which enable a displacement of the guide elements 4 transversely to the rolling direction and a corresponding support of the guide elements 4. The upper and the lower guide beds 16, 17 absorb the forces and torques occurring during the guiding of the rolled material. Both the upper and also the lower guide bed 16, 17 are provided with a corresponding lubrication, preferably with a grease lubrication.

[0046] The guide elements 4 are each used for laterally guiding the rolled material in the rolling gap 10 between horizontal rolls 11 of the horizontal roll stand 2 (see FIG. 2). The lateral guiding of the rolled material is reasonable and advantageous in particular for the ends of metal strips. To provide upper and lower guides for such guiding, the guide elements 4 are each provided with a C-shaped guide profile 12 on their side facing toward the rolled material transversely to the rolling direction.

[0047] On their ends facing toward the horizontal rolls 11 of the horizontal roll stand 2, the guide elements 4 are each supported via at least one plain bearing block 18 on a guide table 19, which is fastened on a horizontal roll stand post 20 of the horizontal roll stand 2. The guide table 19 is fastened and supported on the horizontal roll stand post 20 so that its guide surface is aligned below the upper edge of the lower horizontal roll 11.

[0048] To be able to predefine or set the offset dimension X′, compensation plates 21 are fastened on each of the chocks 7, via which the distance X between the traverse 5 and the chock 7 is permanently pre-definable. Since the guide elements 4 are each preferably fixedly connected to the traverse 5 via the connecting parts 13, the distance X between the traverse 5 and the associated chock 7 determines the offset dimension X′. The displacement movement of the relevant vertical roll 6 is effectuated on each side of the rolled material via the adjustment device 8, which acts directly on the associated traverse 5 in each case. The traverse 5 in turn acts on the relevant chocks 7, which form a structural unit together with the vertical roll 6.

[0049] It is necessary at regular intervals to rework the vertical rolls 6 and the diameter D of the vertical rolls 6 due to wear. Without corresponding measures, the offset dimension X′ from the front edge of the vertical roll 6 facing toward the rolled material to the relevant guide element 4 would change. It is possible by means of the compensation plates 21 provided on the chock 7 to set the offset dimension X′ again upon each roll change by selecting the corresponding compensation plate 21.

LIST OF REFERENCE NUMERALS

[0050] 1 vertical roll stand [0051] 2 horizontal roll stand [0052] 3 intermediate stand guide [0053] 4 guide elements [0054] 5 traverses [0055] 6 vertical rolls [0056] 7 chocks [0057] 8 adjustment devices [0058] 9 adjusting cylinder [0059] 10 rolling gap [0060] 11 horizontal rolls [0061] 12 guide profile [0062] 13 connecting parts [0063] 14 overload safeguards [0064] 15 vertical roll stand posts [0065] 16 upper guide bed of the vertical roll stand post [0066] 17 lower guide bed of the vertical roll stand post [0067] 18 plain bearing block [0068] 19 guide table [0069] 20 horizontal roll stand post [0070] 21 compensation plates [0071] X thickness of the compensation plates [0072] X′ offset dimension [0073] D diameter of the vertical rolls