Device for adapting working rolls to a rolling line
The invention relates to a device for adapting working rolls, in particular of four-high stands, to a rolling line with at least one pair of wedges ( 1, 1 ′) in a region between parallel, spaced from each other, rolling mill stands ( 2, 2 ′), which are displaceable along a horizontal slideway relative to the stands ( 2, 2 ′) by toggle lever adjusting means. To this end, the wedges ( 1, 1 ′) of the wedge pair are connected with each other at a fixed distance from each other, and for their displacement an arrangement of two toggle levers ( 4, 5 ) is provided of which one lever ( 4 ) is supported on one wedge ( 1 ) with at least one articulated joint ( 6 ) and another lever ( 5 ) is supported on an opposite stand ( 2 ′) also with at least one articulated joint, and both levers ( 4, 5 ) are connected with each other by a longitudinally adjustable toggle joint ( 7 ).
1. A device for adapting working rolls of rolling mill stands ( 2 , 2 ′) arranged parallel to each other and spaced from each other, the device comprising at least one pair of wedges ( 1 , 1 ′) arranged in a region between the adjacent rolling mill stands ( 2 , 2 ′), connected with each other at a fixed distance from each other, and displaceable along a horizontal slideway relative to the rolling mill stands ( 2 , 2 ′); and toggle lever adjusting means for displacing the wedges ( 1 , 1 ‘) and having two toggle levers ( 4 , 5 ), at least two articulated joints ( 6 , 10 ) for supporting, respectively, one ( 4 ) of the two levers on a wedge ( 1 ) associated with one ( 2 ) of the two stands ( 2 , 2 ’) and another ( 5 ) of the two levers on an opposite one of the two stands ( 2 ′), and a longitudinally adjustable toggle joint ( 7 ) for connecting the two levers ( 4 , 5 ) with each other.
2. A device according to claim 1 , further comprising power means ( 12 ) for displacing the two toggle levers ( 4 , 5 ) between an angular position ( 13 ) and a linear position ( 14 ) and including a linearly displaceable piston rod ( 11 ) directly connected with the toggle joint ( 7 ).
3. A device according to claim 1 , further comprising a threaded spindle ( 8 ) for longitudinally adjusting the toggle joint ( 7 ), and wherein the toggle joint ( 7 ) is supported on one of the levers ( 4 , 5 ).
4. A device according to claim 3 , wherein the toggle joint ( 7 ) is supported on the one ( 4 ) of the two levers, the device further including an add-on motor ( 9 ) for longitudinally displacing the toggle joint ( 7 ) via the threaded spindle ( 12 ).
5. A device according to claim 2 , wherein the toggle joint ( 7 ) includes a truss ( 4 ′) which is arranged transverse to an axis (X-X) of the one of two levers ( 4 ) and against which respective ends of the another of the two levers ( 5 ) and the piston rod ( 11 ) of the power means ( 12 ) are supported.
6. A device according to claim 1 , wherein each wedge ( 1 , 1 ′) has a slide surface ( 16 , 16 ′) provided on its upper surface.
7. A device according to claim 5 , comprising an add-on motor ( 9 ) for displacing the toggle joint ( 7 ), and a worm gear ( 17 ) for connecting an add-on motor ( 9 ) with the truss ( 4 ′).
8. A device according to claim 2 , wherein the power means ( 12 ) includes a cylinder in which the piston ( 11 ) is displaceable in and out for displacing the two toggle levers ( 4 , 5 ) between the angular and linear positions ( 13 , 14 ) thereof, respectively.
9. A device according to claim 8 , wherein the cylinder is pivotal about an axis ( 15 ).
10. A device according to claim 1 , wherein the at least two articulated joints ( 6 , 10 ) and the toggle joint ( 7 ) are all pivotable about respective horizontal pivot axes.