Patent ID: 6533214
Filing Date: 2003-03-18
Classification: B65H

Abstract:
A device for supporting a winding bar for the rolling or unrolling of bolts of material comprising:a guiding bearing made up of a fixed casing in which a shaft can move along an axis of the shaft and is mounted, the shaft having an end created to engage one of the ends of the winding bar, the shaft driven in rotation by means of a sleeve moved in rotation in the casing by a motor, and the interior of the sleeve moves the shaft, the device characterized by said fixed casing having the form of a cylinder casing of a jack in a watertight chamber which can move under fluid action, a piston operably associated with the shaft and wherein the cylindrical casing is arranged at a first end allowing for extraction of the end of the shaft; the piston being coaxially attached to a tubular element by the shaft which is mounted in free rotation in the tubular element by means of rollers and attached to the tubular element in axial translation, and said piston in the guiding bearing in axial translation in the cylindrical casing of the tubular element and the tubular element supported by sliding means interposed between an internal face of the cylindrical casing and an external face of the tubular element; and the sliding means being made up of a sliding ring wedged in a clip fixedly held at the first end of the cylindrical casing between a stop segment housed in a groove in the internal wall of the cylindrical casing and an annular stop closing a portion of the watertight chamber.