Drive for a printing press with a plurality of printing units
AssigneeHeidelberger Druckmaschinen AG
InventorsKlaus Hartmann, Georg Rossler
Life of this patent
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Abstract
Drive for a printing press with a plurality of printing units connected to one another by a gear train, each of the printing units being associated with a motor for supplying power to the gear train, includes a control device for receiving information regarding a register deviation between two of the printing units of the printing press operating at an existing power ratio and, in accordance with the information, changing the existing power ratio of the two drive motors so as to correct the register deviation between the two drive motors.
Claims7
In a printing press having a plurality of printing units arranged in a sequence of pairs of adjacent units, each unit having a printing cylinder, and being connected to one another by a gear train, an equal plurality of drive motors respectively connected with one of the printing units and arranged in pairs of adjacent drive motors corresponding to each pair of adjacent printing units for supplying drive power to the gear train, the improvement comprising in combination a control device for each pair of adjacent motors having input means for receiving sheet deviation information for each printing unit driven by a respective one of said pairs of adjacent motors, said deviation information relating to register deviation between each pair of the printing units of the printing press driven by a respective one of a respective pair of adjacent motors, operating at a given power ratio in accordance with said deviation information, further control means connected between said control device and each of said pair of adjacent motors operative for changing the existing power ratio of said pair of drive motors so as to correct said register deviation between said pair of drive motors.
Dependencies are inferred from the claim text.