Abstract: A device for building up a stack of perfectly aligned packing box blanks and turning the stack consists of four movable stores angularly arranged on a rotary support for movement between four succeeding stations. The rotary support effects a 90.degree. stop-and-go rotation. In the first station, the stack is built-up with blanks provided by a first conveyor; in the second station, the stack is subjected to an aligning action on its side due to a 90.degree. rotation of the store; and in the third station the stack of blanks is, again, in a flat position but inversed with regard to the position of the first station to be removed by a second conveyor.

Abstract: A device for piling up flat workpieces especially box blanks characterized by a conveyor for transporting the box blanks in at least one stream of staggered blanks, a device for braking and separating the blanks in each stream of box blanks, a device for removing box blanks having contingent flaws from the conveyor, a piling device for forming piles of box blanks from the stream of blanks in the conveyor, a removing device for removing the piles of box blanks created in the piling device, a device for creating batches of box blanks standing on their edges from the piles and a device for transferring the piles of box blanks in an aligned fashion to the device for creating the batches. In particular the device for conveying includes a plurality of conveyors aligned one after the other in the direction of transport with the last conveyor in the direction of transport being pivotable around the drive roller and being part of the device for rejecting box blanks having contingent flaws.