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AssigneePaper Converting Machine Company
InventorsJordan W. Koplien, James J. Kaye, Randall L. Heyrman, Dale E. Zeman
Estimating the term…
A device and a method is disclosed to maintain plate and anilox mandrel position stability in print decks of a flexographic printing press. In one aspect, the mandrel bearings associated with at least one of the plate roll and the anilox roll are preloaded for the purpose of eliminating backlash and increasing the positional stiffness of the bearings, and thus the mandrel. In another aspect, the roll drive motor control system is enabled to provide a torque additive command the torque profile to maintain rotational consistency and otherwise overcome torque transients experienced by the motor during print bounce. Accordingly, the problem commonly referred to as print bounce and or print banding is alleviated.
A printing press comprising:
A control for driving a motor for a roll in a printing press, wherein the printing press has front and back frames, a front bearing assembly supported on the front frame, and a back bearing assembly supported on the back frame, the roll extends axially between the front and back frames, the roll has front and back ends which are rotatably supported by the front and back bearing assemblies, the roll comprises one of an anilox roll and a plate roll, and the motor is operatively connected with and adapted and configured for rotating the roll, the control being configured to:
Dependencies are inferred from the claim text.