Printing unit and method to change printing rollers in a printing unit

Abstract

The invention relates to a printing unit (10) comprising a first printing roller (12) with a first shaft, a second printing roller (18) with a second shaft, a first mandrel configured to hold each of the shafts at a time, a second mandrel configured to hold each of the shafts at a time and a carousel gripper (40 ) configured to translationally move in a printing position in axis direction of the first and second printing roller (12, 18) to unplug the first shaft from the first mandrel and the second shaft from the second mandrel; to rotate around an axis parallel to the axis of the first and second printing roller (12, 18), thereby switching the position of the printing rollers (12, 18); and to translationally move in axis direction of the first and second printing roller (12, 18) to plug the first shaft to the second mandrel and the second shaft to the first mandrel. Furthermore, the invention relates to a method to change printing rollers (12, 18) in a printing unit (10).

Dependencies are inferred from the claim text.