APPARATUS FOR TRANSFERRING A STACK OF PAPER FROM A STACKING STATION TO A DISCHARGE CONVEYOR

摘要

An arrangement for forming successive layers of sheets of paper and the like from a stream of individual sheets supplied in succession to a collecting station by a supply conveyor, and for transferring the formed layers to a continuously advancing discharge conveyor, includes an abutment capable of interrupting the advancement of the supplied sheets to form a layer from a predetermined number of sheets, and a clamping device which grips the layer of sheets and transfers the same to the discharge conveyor. The arrangement includes a drive including a transmission, particularly a kinematic linkage transmission, causing the abutment and clamping device to perform a preselected succession of movements, and a prime mover which is kinematically separated from the main drive of the machine in which the arrangement is used and thus from the drive of the supply and discharge conveyors. The speed, acceleration and deceleration of the separate motor are controlled by a control arrangement which ascertains the delivery of a preselected number of sheets to the collecting station and thus the formation of a layer containing the predetermined number of sheets and causes the arrangement to perform its operating cycle while the formation of the next-following layer takes place at the collecting station.