DEVICE FOR A FIT-ACCURATE SHEET TRANSFER BETWEEN THE PRINTING UNITS OF A MULTICOLOR PRINTING MACHINE

摘要

A device the for in-register transfer of sheets and for the conveyance thereof between the printing units of a multi-color press by means of gripper carriages that move on rails and which are driven by an endless chain and which are aligned on the delivery and feed cylinders by rotating drive forks and that cooperate with a cam roller carried by the carriage. For joint axial and radial alignment with quiet entry the drive fork has leading and trailing flanks of different thicknesses and the flanks are guided into engagement with the cam roller by hardened guide plates in the gripper carriage. The leading flank is undersized and the second flank has the dimension necessary for establishing proper registration of the carriage.