Apparatus for mutually positioning roll surfaces of rolls

Details Apparatus for mutually positioning roll surfaces of rolls Apparatus for mutually positioning roll surfaces of rolls

D - Textiles, Paper

21

G

92/4

D21G 1/00 (2006.01)

Patent

CA 1262418

INVENTOR: WOLF-GUNTER STOTZ INVENTION: APPARATUS FOR MUTUALLY POSITIONING ROLL SURFACES OF ROLLS ABSTRACT OF THE DISCLOSURE A hydraulic adjustment motor containing a piston-and-cylinder unit is provided at the roll surface of a roll to be moved in order to position the roll surface relative to another roll surface of a further roll. Each adjustment motor is arranged between the related roll surface to be moved and its related roll stand. A regulation device is arranged between a pressure source, the pressure chamber of the adjustment motor and a vessel for the hydraulic medium. This regulation device is structured for regulating the impingement of the pressure chamber with different pressures up to the maximum pressure of the pressure source and for regulating the outflow of a selected volume of the hydraulic medium out of the pressure chamber, correlated to the desired lowering of each roll surface, during lowering of the roll surface and for maintaining a residual volume of the hydraulic medium. Consequently, there is provided a defined relative position between the roll surfaces. With this apparatus there can be thus accomplished the raising, relieving, lowering or holding of the work surfaces of the rolls in desired positions. The apparatus is also particularly suitable for very rapidly moving apart the individual rolls, especially the intermediate rolls of the roll stack, and by setting an appropriately reduced pressure in the pressure chamber is capable of taking-up the weights to be relieved, for instance the so-called overhanging or cantilever weights or marginal loads at the individual roll surfaces and to counteract the same. - 2 -

525514

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