PRINTING PLATE AUTOMATIC ATTACHMENT AND DETACHMENT DEVICE AND OFFSET ROTARY PRINTING MACHINE

PROBLEM TO BE SOLVED: To provide a printing plate automatic attachment and detachment device and an offset rotary printing machine which can improve attachment accuracy of a printing plate to a plate cylinder while minimizing a workload required for plate cylinder mounting work.SOLUTION: A printing plate automatic attachment and detachment device has a plurality of printing plate pressing mechanisms which are each independently configured so as to be movable forward and backward relative to a peripheral surface of a plate cylinder, where the plurality of printing plate pressing mechanisms each have a plurality of pressing roller members which are formed so as to be rotatable in a circumferential direction of the plate cylinder around a rotating axis parallel to an axis direction of the plate cylinder and are formed so as to press the plate cylinder to the peripheral surface of the plate cylinder at an advancement position advancing toward the peripheral surface of the plate cylinder, and the plurality of plate cylinder pressing mechanisms are formed so as to press the printing plate to the plate cylinder rotating in a state in which a gripping side edge part of the printing plate is locked on a gripping side edge part of a printing plate attachment groove, at the time of attachment and removal of the printing plate to/from the plate cylinder.SELECTED DRAWING: Figure 2 【課題】刷版の装着作業に要する作業負担を最小限に抑えつつ、版胴に対する刷版の装着精度を向上させることが可能な刷版自動着脱装置及びオフセット輪転印刷機を提供する。【解決手段】版胴の周面に対して互いに独立して進退可能に構成された複数の刷版押さえ機構を備え、複数の刷版押さえ機構は、それぞれ、版胴の軸方向と平行な回転軸を中心として版胴の周方向に沿って回転可能に構成され、かつ、版胴の周面に向けて前進した前進位置において版胴の周面に刷版を押さえ付け可能に構成された複数の押さえコロ部材を有しており、複数の刷版押さえ機構は、版胴に対する刷版の装着時及び取り外し時において、互いに独立して、刷版装着溝の咥え側エッジ部に刷版の咥え側端部が係止された状態で回転する版胴に対して、複数の押さえコロ部材によって該刷版を押し付けるよう構成されている。【選択図】図２