Patent ID: 8276420
Filing Date: 2012-10-02
Classification: C25D,F16C

Abstract:
1. A roll unit for use in a surface treatment of a copper foil, wherein shaft sleeves are fitted to a roll shaft so that the roll shaft is rotatably supported by a bearing via the shaft sleeves, wherein the roll unit comprises a structure where the shaft sleeves consist of two sleeves, namely a roll-side sleeve arranged on a roll main body side and a tapered sleeve arranged on a shaft end side, an oil seal is provided between the roll-side sleeve and a bearing box, the tapered sleeve is inserted between the bearing and the roll shaft, and the roll shaft is rotatably supported by the bearing via the tapered sleeve, wherein the tapered sleeve to be inserted between the roll shaft and the bearing is of a tapered face in which the diameter of an outer peripheral surface decreases in an edge direction of the roll shaft, and an inner peripheral surface of the bearing opposed to the tapered sleeve has a tapered face in which the inner diameter decreases in an edge direction of the roll shaft, and wherein an O-ring is provided to an inner peripheral surface of the roll-side sleeve, and an adjustment liner is provided between a lateral face of the roll-side sleeve and a lateral face of a main body of the roll unit so as to adjust a position of the roll-side sleeve.