Patent ID: 6679451
Filing Date: 2004-01-20
Classification: B65H

Abstract:
A device for unwinding reels of web material wound on a core, comprising in combination:a carriage movable in a direction of displacement between at least one loading and unloading position and an unwinding position to move a reel from said loading and unloading position to said unwinding position and, after unwinding the web material from said reel, to move said core from said unwinding position to said loading and unloading position; on said carriage, at least one oscillating arm for supporting at least one reel of web material, and at least one actuator for moving said oscillating arm; in the unwinding position, a flexible unwinding member driven around a plurality of pulleys, at least one of which is motorized, a member for tensioning the flexible unwinding member being associated with at least one of said pulleys; and wherein said at least one oscillating arm is controlled by said actuator so as to move gradually the axis of a reel being unwound in said unwinding position toward the flexible unwinding member in relation to a reduction in diameter of said reel, as well as to raise the reel and to lower and release the empty core in the loading and unloading position.