Method in an adjustable-crown roll as well as a roll device...

Details Method in an adjustable-crown roll as well as a roll device... Method in an adjustable-crown roll as well as a roll device...

D - Textiles, Paper

21

F

92/21.5

D21F 3/08 (2006.01) B30B 3/00 (2006.01) D21G 1/00 (2006.01) D21G 1/02 (2006.01) F16C 13/00 (2006.01)

Patent

CA 1282623

METHOD AND DEVICE IN AN ADJUSTABLE-CROWN ROLL ABSTRACT OF THE DISCLOSURE Method in a variable-crown roll in which hydraulic loading elements or a series of hydraulic loading elements are used . Such series of elements acts along a plane of n nip that can be formed between the variable-crown roll and a counter-roll thereof, with such elemencts or series being situated between central axle of the roll and a cylindrical mantle which is rotatble about the central axle through radial bearing. The central axle is supported by axle journals thereof on deflection bearings. In the method, the central axle is pivoted about the deflection bearings thereof over an angle which is within a range of about 30° to 180°. By the effect of such pivoting, the variable- crown roll and the mantle thereof are shifted away from the nip, so that the nip is opened. This shifting is produced by the axis of pivotion of the deflection bearings being situated by a certain eccentricity distance further away from a nip line of the closed nip, than the axis of rotation of the roll mantle.

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