Automatic device associated with a to-size cutter for collecting abrasive or other kind of sheets

Claim 1

An automatic device adapted to be associated with a to-size cutter for collecting abrasive or other kind of sheets into reams, characterized in that it comprises a frame having a conveyor device for conveying the individual abrasive sheets from the cutter output to the collecting station of the sheets into reams, an auxiliary mobile table arranged beneath the advancement surface of the conveyor device and provided with an intermittent reciprocating movement from an inoperative position to a collecting position of the sheets discharge from the conveyor device, a main mobile table arranged beneath the auxiliary mobile table and also provided with a reciprocating intermittent movement from an inoperative position to a collecting position of the sheets discharged from the conveyor device, the movements of the two mobile tables being timed in such a manner that each mobile table effects its movements from the inoperative position to the collecting position and vice versa while the other mobile table is in the collecting position and the dwell time of the main table in the collecting position is a multiple of the dwell time of the auxiliary table in such position, and a device for conveying the abrasive sheet reams away from the collecting position of the sheets into reams, having the ream advancement taBle arranged beneath the main mobile table and facing it in its initial section, the auxiliary mobile table and the main mobile table being hinged each to an end of a lever which is pivoted at the opposite end at a fixed point of the frame and undergoes in an intermediate point thereof the action of an eccentric mounted on a shaft connected to the main drive of the cutter, said levers carrying each in an intermediate point an abutment for an element undergoing the action of a cam carried by a shaft having with respect to the eccentric drive shaft a reduction ratio which is in reverse proportion to the number of sheets in each ream, said cams having the function of unlocking the levers hinged to the auxiliary and main tables for leaving said tables free to be brought to a collecting position and vice versa under the action of lever return springs and the eccentrics carried by the drive shaft connected to the cutter drive, respectively.