Patent ID: 7942406
Filing Date: 2011-05-17
Classification: B65H

Abstract:
1. A roll feeder for producing a series of sheet groups in which a plurality of sheets which are obtained by continuously cutting a belt-shaped material are arranged in a partially overlapped manner, the roll feeder comprising: a first conveyer that conveys the belt-shaped material; a rotary cutter that continuously cuts the belt-shaped material conveyed by the first conveyer into a plurality of sheets; a second conveyer, composed of a belt member, that conveys the sheets, cut respectively, at a conveying speed higher than that of the first conveyer while sucking the sheets from a lower side thereof during the conveyance; a lift member that pushes upward a tail end portion of each of the cut sheets conveyed by the second conveyer; a third conveyer, composed of a belt member, that conveys the sheets at a conveying speed lower than that of the second conveyer while sucking the tail end portion of each of the cut sheets pushed upward by the lift member; a fourth conveyer that receives the respective sheets conveyed by the third conveyer; and a stop member that is provided on a conveyance path of the fourth conveyer so as to temporarily stop and hold a lead end portion of the cut sheet conveyed by the third conveyer, wherein the third conveyer includes a suction roller that sucks the tail end portion of each sheet pushed upward by the lift member so as to bend the tail end portion to roll back the tail end portion upward.