Roll or roller – Rotatable relative to supporting shaft
Patent
1998-07-13
2000-05-30
Cuda, Irene
Roll or roller
Rotatable relative to supporting shaft
492 57, 492 60, B23P 1500
Patent
active
060685824
ABSTRACT:
A roll for use in a paper machine including a bendable roll shell disposed around a continuous roll carrier. The roll shell is supported at least in the radial direction on the roll carrier only in an axial central region. Axially outside the central region, the roll shell and/or carrier are respectively shaped and positioned that there is radial spacing between them for allowing the roll shell to bend in relation to the roll carrier under the weight of the roll shell and the force exerted by the belt, web, or the like, partially wrapped around the roll shell. To improve the behavior of the roll, the roll shell is of such material and/or shaped so that beginning from the central region, the rigidity of the roll shell decreases toward the axial ends of the roll shell in such a way that loading resulting from the dead weight of the roll shell and the operational loading on the roll shell causes desired curvature of the bending line of the roll shell. The roll shell may be affixed to rotate with the carrier or rotatable with respect to the carrier. The rigidity adjustment of the roll shell is obtainable either by varying the wall thickness of the roll shell and/or by selective inclusion of reinforcement materials within the roll shell for affecting the rigidity.
REFERENCES:
patent: 1775392 (1930-09-01), Gray
patent: 1868860 (1932-07-01), Von Reis
patent: 2187250 (1940-01-01), Sendzimiz
Cuda Irene
Voith Sulzer Papiermaschinen GmbH
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