Sheet convey apparatus for sheet-fed offset rotary printing press with convertible press mechanism

摘要

A sheet convey apparatus for a sheet-fed offset rotary printing press with a convertible mechanism includes a gripper device and a gripper pad shaft. The gripper device swings between a first position to receive a sheet from a chucking cylinder on an upstream side in a sheet convey direction and a second position to transfer the sheet to a gripper device on a downstream side in the sheet convey direction. The gripper pad shaft extends in a widthwise direction of the sheet and pivots together with the gripper device. A position of a rotating shaft axis at an intermediate portion of the gripper pad shaft is set within a range of an angle which is formed by a line that connects rotating shaft axes at two ends of the gripper pad shaft and a sheet holding position of the gripper device at the first position and a line that connects the rotating shaft axes at the two ends of the gripper pad shaft and a sheet holding position of the gripper device at the second position.