Device for isolating stacked flat workpieces

A device for isolating stacked flat workpieces, the device comprising:

• a driven supporting framework which rotates in a frame,
• rotating rolls supported in said framework at equal intervals on a circle concentric with a turning axis of the framework,
• a row of suction boxes provided on each roll,
• driving gears for rotating said rolls,
• a spider gear for rotating the driving gears in directions opposite a rotation direction of the supporting framework, said spider gear being fixed to the frame,
• intermediate gears supported in the supporting framework through which said spider gear rotates said driving gears,
• a stacking cartridge placed external to said rotating rolls in such a way that a row of suction boxes of each of said rolls withdraws an exposed workpiece from the stacking cartridge, said stacking cartridge completely confining a stack to be separated into single workpieces, and
• a transport device, placed external of said rotating rolls, which removes an isolated workpiece and further transports the isolated workpiece,
• wherein said stacking cartridge includes a vertical shaft, into which two pairs of grate-shaped prongs project from opposite sides, the prongs of each of said two pairs disposed on the same horizontal plane and able to be raised, lowered and conducted in and out of the vertical shaft so as to replace the prongs of the other of said two pairs.