| 摘要 |
In a printing machine with an impression roll and several printing mechanisms, the bearings of the size cylinders and the inking device supports can be moved with the screen rolls on guides of the printing machine stand, approximately radially to the impression roll. The drive of the size cylinders and of the screen rolls is derived from a central drive. In order to create a simple continuously running drive for the inking device rolls, the screen rolls are actively connected via a freewheel to the central drive. For the screen rolls, which can be moved away from the size cylinders, a continuously running drive is provided which consists of a toothed belt, driven by a servomotor, which loops around all of the toothed drive wheels of the screen rolls. The strands of the toothed belt and the strands of the toothed belt enclosing the respectively radial external idle wheels in a loop-like manner, extend in parallel with each other. The inking roll supports can also be moved along their guides in parallel with the strands of the toothed belt which are in parallel with each other.
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