Device and method for performing a printing plate change on a plate cylinder of a printing press
AssigneeMAN Roland Druckmaschinen AG
InventorsThomas Gsell, Rudolf Stroh, Thomas Boeck, Wolfgang Kaeser
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Abstract
A device and method for performing a printing plate change on a plate cylinder of a printing press is disclosed. The device includes a rolling element featuring several rollers for pressing at least one printing plate on the plate cylinder during a printing plate change. A strip bearing several alignment elements extends parallel to the rolling element, where a printing plate can be aligned true-to-register between every two adjacent alignment elements before the printing plate is clamped in a lockup slot of the plate cylinder.
Claims8
A printing press, comprising:
- a plate cylinder including a lockup slot;
- and
- a printing plate changing device including a rolling element featuring several rollers for pressing a printing plate on the plate cylinder during a printing plate change, a strip bearing several alignment elements that extends parallel to the rolling element, wherein a printing plate is alignable true-to-register between every two adjacent alignment elements, and at least two centering pins allocated to the strip which are insertable into corresponding recesses of the plate cylinder to align the strip and therefore the alignment elements relative to the plate cylinder.
A printing press, comprising:
- a plate cylinder including a lockup slot;
- and
- a printing plate changing device including a rolling element featuring several rollers for pressing a printing plate on the plate cylinder during a printing plate change, a strip bearing several alignment elements that extends parallel to the rolling element, wherein a printing plate is alignable true-to-register between every two adjacent alignment elements, wherein the alignment elements feature a phase on side walls being used for the true-to-register alignment of the printing plate, and wherein the side walls of the alignment elements being used for the true-to-register alignment of the printing plate are divided into two sections, namely into a first chamfered section and a second unchamfered section, wherein the first chamfered section protrudes into a projection opposite from the lockup slot of the plate cylinder and the second unchamfered section falls into a projection in the lockup slot of the plate cylinder.
A printing press, comprising:
- a plate cylinder including a lockup slot;
- and
- a printing plate changing device including:
- a strip including a first alignment element and a second alignment element;
- a first centering pin disposed at a first end of the strip and a second centering pin disposed at a second end of the strip;
- a plurality of rollers disposed within the strip and between the first and second alignment elements;
- and
- a clamping element coupled to the strip and disposed between the first and second alignment elements;
- wherein the first and second centering pins are insertable into corresponding recesses of the plate cylinder to align the strip and the first and second alignment elements relative to the plate cylinder.
Dependencies are inferred from the claim text.