Self-loading controlled deflection roll

Abstract

A self-loading type of controlled deflection roll has two sets of opposed, hydraulically actuated pressure shoes extending along its length. Each set of opposed pressure shoes is arrayed in a plane and the two planes intersect perpendicularly with their line of intersection coincident with the longitudinal axis of the roll. The distance from the surface of the beam on one pair of opposite sides to its longitudinal axis for one set of pressure elements is less than the corresponding distance on the other pair of opposite sides for the other set of pressure elements. The self-loading roll is intended to be brought into nipping engagement with another roll. The center support beam rotates in conjunction with a corresponding retraction of the pressure shoes in the oncoming direction toward the intended nip-line of engagement with another roll. This permits the rotatable shell of the self-loading roll to be supported at a lower position relative to the longitudinal axis of the roll. This creates a gap between the controlled-deflection roll and its mating roll. Continued rotation of the self-loading roll causes the next set of oncoming pressure shoe(s) to rotate toward the nip-line of contact between the rolls.