Press roll with adjustable flexion
AssigneeJ. M. Voith GmbH
InventorsChristian Schiel, Robert Wolf
Life of this patent
Estimating the term…
Abstract
A press roll with adjustable flexion has a roll shell mounted to rotate around a fixed yoke and mounted with self-aligning bearings on a support cap in which the yoke is also supported on its own curved support. The press roll works in conjunction with a mating roll to form a press zone, near which there is a main hydraulic support that is positioned between the yoke and the shell and that transfers support forces from the yoke to the shell. The distance between the bearings of the shell is equal to that of the mating roll. The self-aligning bearing and the curved yoke support are mounted concentrically on a tubular collar of the support cap. There can also be supplemental supports outside the press zone for imposing additional flexion on the roll shell.
Claims20
A press roll with adjustable flexion for applying pressure in cooperation with a mating roll:
- the press roll comprising:
- a longitudinally extending yoke;
- a hollow shell around the yoke;
- the shell having first opposite ends;
- a self-aligning bearing at each first end of said shell for supporting the shell for rotating around the yoke and for holding the shell away from the yoke;
- the mating roll being adjacent the press roll;
- both the press roll and the mating roll having parallel rotation axes;
- both rolls together defining a press nip;
- the press nip and the roll axes being in a press plane;
- the mating roll having second opposite ends and being supported at the second opposite ends by respective mating roll bearings;
- the press roll yoke having third opposite ends;
- and support cap for each third end of the press roll yoke for supporting the yoke in position;
- at each third end, the yoke including a supported area which is supported by the respective support cap;
- each support cap including a collar extending into the interior of the hollow shell from the respective first end at which that support cap is positioned and the respective supported area of the yoke sitting on the respective collar;
- the longitudinal distance between the center planes of the supported areas of the yoke, which planes are perpendicular to the rotation axes of the rolls, is at most as great as the distance between the mating roll bearings;
- the distance between the self-aligning bearings of the roll shell is at least approximately the distance between the mating roll bearings.
A press roll with adjustable flexion for applying pressure in cooperation with a mating roll:
- the press roll comprising:
- a longitudinally extending yoke;
- a hollow shell around the yoke;
- the shell having opposite ends;
- a self-aligning bearing at each end of the shell for supporting the shell for rotating around the yoke and for holding the shell away from the yoke;
- a support cap at each end of the press roll yoke for supporting the yoke in position;
- at each end said yoke including a supported area which is supported by the respective support cap;
- first hydraulic support means located between the yoke and the shell for controlling the pressure of the shell against the mating roll across the press gap;
- first means for supplying a pressure medium to the first hydraulic support;
- supplemental hydraulic support means at each end of the shell and located between the yoke and the shell and also located longitudinally between the first hydraulic support means and the respective self-aligning bearing at the respective end of the shell;
- second means for supplying a pressure medium to the supplemental hydraulic support means independent of the first hydraulic support means.
Dependencies are inferred from the claim text.