Roll stand for hot-rolling or cold-rolling metallic strips

Metal deforming – By use of roller or roller-like tool-element – With carrier for roller-couple or tool-couple

Reexamination Certificate

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Details

C072S241800, C072S248000

Reexamination Certificate

active

07111486

ABSTRACT:
The invention relates to a roll stand for hot-rolling or cold-rolling metallic strips. The roll stand comprises back-up rolls and work rolls (2, 3; 4, 5) which are respectively positioned in chocks (6; 7) in a rotating manner. Each chock (6; 7) can be displaced on two sides in guiding devices (8) of the column frame (9) for adjusting the roll gap (10) and can be additionally displaced on at least one side for adjusting the play, by means of horizontal piston cylinder units (11) arranged in the column frame (9). The aim of the invention is to completely eliminate the play in the vertical guiding device (8) of the work roll chocks (6; 7) during the rolling. To this end, the chocks which are guided on at least one side of the column (9a) by means of the piston cylinder unit (11) arranged in the column frame (9) and by means of one respective support element (14) which is arranged on the front side of the piston (11a), can be pressed against the other side of the column (9b) and the guiding device (8) thereof without play when the vertical roll positioning drive is stopped. and can be released when the vertical roll positioning device is switched on.

REFERENCES:
patent: 1887870 (1932-11-01), Coe
patent: 3302435 (1967-02-01), Lyle et al.
patent: 4218905 (1980-08-01), Lehmann et al.
patent: 4402207 (1983-09-01), Buder
patent: 4530227 (1985-07-01), Schlatter et al.
patent: 4747291 (1988-05-01), Kostopolos
patent: 4898014 (1990-02-01), Ginzburg et al.
patent: 6354128 (2002-03-01), Donini et al.
patent: 6510721 (2003-01-01), Yamamoto et al.
patent: 1036605 (2000-09-01), None
Patent Abstracts of Japan, vol. 016, No. 119 (M-1225), Mar. 25, 1992 & JP 03 285708 A (Ishikawajima Harima Heavy Ind Co Ltd), Dec. 16, 1991.
Patent Abstracts of Japan, vol. 011, No. 014 (M-553), Jan. 14, 1987 & JP 61 189809 A (Ishikawajima Harima Heavy Ind Co Ltd), Aug. 23, 1986.

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