Device for actuating a rotating shaft selected from a plurality of parallel rotating shafts

A device for actuating a shaft selected from a plurality of parallel shafts, comprising:

• a driving shaft supported and actuated by an electric motor, the driving shaft provided with a driving gear for transmission of torque;
• each of the plurality of parallel shafts is provided with a respective driven gear that is designed to be meshed with the driving gear;
• each of the respective driven gears being arranged at a respective axial position, the respective axial positions are different from each other;
• an actuator configured to axially move the driving gear to mesh with the respective driven gear of the shaft selected from the plurality of parallel shafts;
• each of the driving shaft and the plurality of parallel shafts has a respective disk body mounted thereon, the respective disk body on the driving shaft preventing rotation of the other of the plurality of parallel shafts other than the shaft selected from the plurality of parallel shafts having the respective driven gear with which the driving gear is meshed.