Roll stand and method for changing work rolls
AssigneeSMS group GmbH
InventorsDietmar FONTAYNE, Stephan FISCHER
Life of this patent
Estimating the term…
Abstract
A roll stand having work rolls mounted therein. The roll stand has at least one upper mounting rail, which is mounted on the drive-side roll stand frame and oriented in a transverse direction to a rolling line running through the roll stand. In order to be able to keep the assembly space in the roll stand over the rolling line free during rolling—except for a roll change—and still change the roll efficiently, the upper mounting rail is configured to be moved into the rolling line and out of the rolling line, starting from the drive-side roll stand frame.
Claims18
1-12. (canceled)
A roll stand, comprising:
- a drive-side roll stand frame;
- an operating-side roll stand frame, wherein the drive-side roll stand frame and the operating-side roll stand frame are separated from each other by a rolling line passing through the roll stand;
- an upper work roll and a lower work roll rotatably supported in chocks on both of the roll stand frames;
- and
- upper mounting rails held on the drive-side roll stand frame on both an incoming side and an outgoing side to support the upper work roll during a roll change, wherein the upper mounting rails extend transversely to the rolling line, wherein the upper mounting rails are shiftable between a retracted operating state, in which the upper mounting rails do not project into the rolling line, and an extended operating state, in which the upper mounting rails, starting from the drive-side roll stand frame, project into the rolling line.
A method for changing work rolls held in a roll stand during ongoing rolling operations, wherein the roll stand comprises a drive-side roll stand frame and an operating-side roll stand frame, and wherein vertically movable guide rails with upper mounting rails are held on the drive-side roll stand frame on an incoming side and an outgoing side, the method for changing the work rolls comprising the steps of:
- vertically moving the guide rails together with the upper mounting rails upward to link up the upper mounting rails with slide parts assigned to an old upper work roll;
- and
- vertically moving the guide rails together with the upper mounting rails even more to lift the old upper work roll suspended from the upper mounting rails, wherein the upper mounting rails, starting from the drive-side roll stand frame, are shifted along a change path extending transversely to a rolling direction in a cantilever fashion into a rolling line, while the old upper work roll, suspended from the upper mounting rail, is moved out of the roll stand.
A method for changing work rolls held in a roll stand during ongoing rolling operations, wherein the roll stand comprises a drive-side roll stand frame and an operating-side roll stand frame, and wherein vertically movable guide rails with upper mounting rails are held on the drive-side roll stand frame on an incoming side and on an outgoing side;
- wherein the method for changing work rolls comprises the steps of:
- linking up the upper mounting rails with slide parts assigned to a drive-side chock of a new upper work roll so that as the new upper work roll is shifted further by way of the upper mounting rails in a direction toward a drive-side part of the roll stand the upper mounting rails are shifted further out of a rolling line in a direction toward the drive side.
Dependencies are inferred from the claim text.