Device for attaching printing plate to printing press and printing press

Abstract

Provided is a device for attaching a printing plate to a printing press wherein a tubular printing plate can be fixed more easily and accurately to a printing press. A device (3) for attaching a printing plate is provided fixedly on the printing plate drive shaft (1) of a printing press in order to fix a printing plate (2) provided with a printing plate portion (5) at a part of the outer circumferential surface of a printing plate body (4) formed tubularly of an elastic material, and having an engaging portion (6) formed on the inner circumference of the printing plate body (4) to project inward and to extend in the axial direction. The device (3) for attaching a printing plate is equipped with a printing plate cylinder portion (12) which is provided fixedly on the printing plate drive shaft (1) and provided, on the outer circumference thereof, with a tubular printing plate attachment surface (14) to which the printing plate (2) is attached from the distal end side of the printing plate drive shaft (1). On the outer circumference of the printing plate cylinder portion (12), a circumferential positioning groove (21) in which the engaging portion (6) of the printing plate (2) is fitted from the distal end side of the printing plate drive shaft (1), an axial positioning stopper (20) against which the end of the printing plate (2) abuts, and a printing plate fixing member (24) for fixing the printing plate (2) tightly to the printing plate attachment surface (14) of the printing plate cylinder portion (12) by pushing a part of the printing plate (2) attached to the printing plate cylinder portion (12) where there is no printing plate portion (5) from the radial inside to the radial outside.

Description

technical field [0001] The present invention relates to a printing plate mounting device for a printing machine and a printing machine. Background technique [0002] As a printing machine, there is known a printing machine in which a printing plate is mounted on the outer periphery of a printing plate cylinder fixed to a printing plate drive shaft. [0003] In a printing machine as described above, a sheet-shaped printing plate may be wound and attached to the printing plate cylinder in a state fixed to the printing plate drive shaft. In this case, the mounting operation of the printing plate in the printing press is troublesome, and it is difficult to accurately mount the printing plate on the printing plate cylinder. [0004] In order to avoid this situation, there is a case where a sheet-shaped printing plate is wound and attached to the printing plate cylinder in a state detached from the printing plate drive shaft, and then the printing plate cylinder is fixed to the p...

AI Technical Summary

Problems solved by technology

In this case, the removal and installation of the plate cylinder relative to the plate drive shaft is difficult due to the considerable weight of the plate cylinder

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