Patent EP-1239170-A1 (EP)
Inventor: MESCHENMOSER ANDREAS
IPC: F16C13/02
Filed: 2002-03-04
Abstract: The self-adjusting bending setting roller (10) has a rotating roller mantle (12), which is supported by an axial bearing bush (22) at each bearing housing (24) radially at the yoke (14) across the press force plane. A guide (26) is fixed axially at the yoke at an axial end, to allow a tilting movement and also a movement of the bearing bush on the press plane at right angles to the roller axis. The self-adjusting bending setting roller has a guide radially between the bearing bush and the yoke at the axial center of the bush and/or axially centered to the bush. The guide also supports the bearing bush radially to the yoke across the press plane. The guide has at least one guide unit (26') as a collar pin, rotating around an axis in the bearing bush at right angles to the press plane, as a slotted link which slides in a guide path (26) at the yoke or bush, to slide at right angles to the roller axis (X) and parallel to the press plane, on both sides of the yoke. A counter plate (28) is at both guide paths. The roller mantle is fixed at the yoke, at the axial drive end, through the bearing housing. The other axial end of the roller mantle is attached to the bearing housing to allow an axial sliding movement. The bearing bush of the bearing housing is supported radially at the yoke by at least two bearing units at opposite sides of the yoke, rotating around an axis at right angles to the press plane in the yoke or the bush. They act together with a counter surface formed by a fitted counter plate. A piston/cylinder assembly (34) is radially between the bearing bush at the bearing housing and the yoke, on the press plane and at right angles to the roller axis. The piston/cylinder assembly is on one and/or both sides of the yoke. The piston/cylinder assembly takes up weight forces on the roller mantle outside its working width and/or to act on the press force distribution across the roller press gap by a controlled feed of a pressure medium, and to take up the forces and/or to lift the roller mantle clear of the facing counter roller by blocking the pressure medium backflow from the piston/cylinder unit. The bearing bush at the bearing housing is at a tapering yoke journal which is against the yoke center, and the piston/cylinder unit is between the tapering yoke journal and the bearing bush. The piston acting on the bearing bush has a pressure fluid relief chamber at the side towards the bush, fed by at least one capillary. The relief chamber is fed from the pressure chamber of the piston/cylinder unit and also through the piston from the side of the bearing bush. The piston lies directly at the inner side of the bearing bush, or at the flat side of an intermediate unit between the yoke and the bush. The axial end of the roller mantle, or its extension (12'), rotates on the bearing bush through two roller bearings (20) with an axial gap between them. The roller has a single zone action, where all the mantle supports (18) are held at the same pressure, or it has a multi-zone working with different pressures at the roller supports. An axial end of the roller mantle, or its extension, it fitted with a radially outer toothed rim gear drive. The axial center of the rim gear lies on a common plane with the bearing at the housing, the guide and/or piston/cylinder unit, at right angles to the roller axis.