US 5,842,368 AGranted

Multiroll stand

AssigneeAchenbach Buschhutten GmbH

InventorsAxel Barten, Josef Troster, Werner Stahl

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Abstract

A six-high multi-roll stand (1), has one top and one bottom work roll (2, 3) which are supported in chocks (4, 5), with one top and one bottom intermediate roll (6, 7) which are supported in chocks (8, 9), and with one top and one bottom back-up roll (10, 11) with bearings located in one top and one bottom chock (12, 13). Two functional units are integrated into windows (16) of two roll housings (14, 15) with four each hydraulic operating cylinder units (18, 18, 19, 19) located symmetrically and parallel to roll axis plan 17--17), each operating cylinder unit (18, 19) consisting of top operating cylinder (18a, 19a) with top actuating piston (20a, 21a) which acts on chock (12) of top back-up roll (10) and bottom operating cylinder (18b, 19b) with bottom actuating piston 20b, 21b) which acts on chock (13) of bottom back-up roll (11) for counterbalancing back-up roll (10), and two operating cylinders (18a, 18b; 19a, 19b) of each operating cylinder unit (18, 19) in common cylinder housing (22, 23). Double-acting actuating sleeves (24a, 24b; 25a, 25b) cause bending of intermediate rolls (6, 7) and work rolls (2, 3) and engage chocks (8, 9; 4, 5) of intermediate rolls (6, 7) and work rolls (2, 3) by means of projections (26).

Claims9

Dependent claims

In a multiroll stand, especially a six-high stand, with one top and one bottom back-up roll, one top and one bottom work roll, a means for counterbalancing the back-up rolls, roll bending means for the work rolls, means for mutual axial displacement of the work rolls and with means for horizontal parallel displacement of the work rolls;

the improvement comprising two functional units integrated into windows (16) of two roll housings (14, 15) of the roll stand (1) with four each hydraulic operating cylinder units (18, 19) located symmetrically and parallel to a roll axis plane (17--17), each operating cylinder unit (18, 19) consisting of top operating cylinder (18a, 19a) with a top actuating piston (20a, 21a) which acts on a chock (12) of said top back-up roll (10) and a bottom operating cylinder (18b, 19b) with a bottom actuating piston (20b, 21b) which acts on a chock (13) of said bottom back-up roll (11) for counterbalancing said back-up roll (10), and two operating cylinders (18a, 18b;
19a, 19b) of each operating cylinder unit (18, 19) being installed coaxially into a common cylinder housing (22, 23) which is divided by a bottom (22a, 23a) into two cylinder chambers (22b, 22c;
23b, 23c), and on operating cylinders (18a, 18b;
19a, 19b) of said operating cylinder units (18, 19) hydraulically movable, double-acting actuating sleeves (24a, 24b;
25a, 25b) which cause bending of said work rolls (2, 3) and which engage chocks (8, 9;
4, 5) of said work rolls (2, 3) by means of projections (26).

3 more elements

In a four-high stand, with one top and one bottom work roll and with one top and one bottom back-up roll, means for counterbalancing of back-up rolls, bending means for work rolls and with means for horizontal parallel displacement of work rolls;

the improvement comprising two functional units integrated into windows (16) of two roll housings (14, 15) of said roll stand (40), with two each operating cylinder units (18, 18), each operating cylinder unit (18) consisting of one top operating cylinder (18a) with a top actuating piston (20a) which acts on a chock (12) of said top back-up roll (10), and a bottom operating cylinder (18b) with a bottom actuating piston (20b) which acts on a chock (13) of said bottom back-up roll (11) for counterbalancing of said back-up roll (10), the two operating cylinders (18a, 18b) of each operating cylinder unit (13) being installed coaxially in a common cylinder housing (22) which is divided by a bottom (22a) into two cylinder chambers (22b, 22c), and on operating cylinders (18a, 18b) of cylinder units (18) hydraulically movable double-acting actuating sleeves (24a, 24b) which cause bending of said work rolls (2, 3) b y engaging chocks (4, 5) of said work rolls (2, 3) by means of projections (26).

Dependencies are inferred from the claim text.