Low-friction bending system in a rolling stand comprising several rolls

Abstract

A device for bending the rolls in a rolling stand having several rolls with the use of bending blocks, which are mounted at the run-in end and the run-out end between the roll chocks and the housing windows and can be acted upon by control elements. A piston-cylinder is assigned to the bending blocks of one of the mill housings, and a vertical positioning mechanism is assigned to the bending blocks of the opposite mill housing.

1 . Device for bending the rolls in a rolling stand comprising several rolls with the use of bending blocks, which are mounted at the run-in end and the runout end between the roll chocks and the housing windows and can be acted upon by control elements, wherein a single piston-cylinder ( 7 ) is assigned to the bending blocks ( 5 ,  5   a ) of a first one of the mill housings ( 6 ) for introducing bending force to the roll, and a vertical positioning mechanism ( 10 ) is assigned to the bending blocks ( 5 ′,  5   a ′) of a second mill housing ( 6 ′) opposite the first mill housing ( 6 ) so as to position and lock the bending blocks of the second mill housing during rolling for flatness control, the vertical positioning mechanism ( 10 ) being configured as a spindle-type lifting gear unit. 
     
     
         2 . Device in accordance with  claim 1 , wherein a roll change position can be vertically adjusted by the vertical positioning mechanism ( 10 ). 
     
     
         3 . Device in accordance with  claim 1 , wherein the piston-cylinder ( 7 ) comprises a piston ( 8 ) mounted in one of the bending blocks ( 5 ) and a connecting rod ( 9 ) to the other bending block ( 5   a ). 
     
     
         4 . Device for bending the rolls in a rolling stand comprising several rolls with the use of bending blocks, which are mounted at the run-in end and the runout end between the roll chocks and the housing windows and can be acted upon by control elements, wherein a single piston-cylinder ( 7 ) is assigned to the bending blocks ( 5 ,  5   a ) of a first one of the mill housings ( 6 ) for introducing bending force to the roll, and a vertical positioning mechanism ( 10 ) is assigned to the bending blocks ( 5 ′,  5   a ′) of a second mill housing ( 6 ′) opposite the first mill housing ( 6 ) so as to position and lock the bending blocks of the second mill housing during rolling for flatness control. 
     
     
         5 . Device in accordance with  claim 4 , wherein the vertical positioning mechanism ( 10 ) is designed as wedges with restricted guidance or as a cylinder with clamping head and position sensor.