DRUM-GUIDE OF PRINTING MACHINE SHEETS FOR STRAIGHT PRINTING OR FOR STRAIGHT-VERSE PRINTING.

摘要

THE DRUM FOLDING GUIDE FOR PRINTING MACHINES WITH THE OPTION BETWEEN HIGH QUALITY PRINTING AND COUNTERPRINTING, IS EQUIPPED WITH A PERFECTED TIGHTENING COUPLING AND ELECTRICAL LOCK. A SEGMENT (2) OF THE EXTERIOR PERIMETER OF THE DRUM CAN BE POSITIONED IN A PERIMETER DIRECTION, WITH RESPECT TO AN INTERIOR AXIS (1), AND SUPPORTED IN FORCE DRAG TO THIS AXIS, THROUGH A TIGHTENING DEVICE. ASSEMBLIES OF FRICTION ELEMENTS (7), FIXED TO THE SEGMENT (2), AND FRICTION ELEMENTS (10), FIXED TO THE AXLE (1), CAN BE SUPPORTED BETWEEN TWO BRACKETS (11,14) SUPPORTED ON THE AXLE (1), THROUGH A FLEXIBLE TIGHTENING LEVER (17), DISPOSED PERPENDICULARLY TO THE AXIAL DIRECTION OF THE TIGHTENING FORCE. THE LEVER (17) ACTUATES AS A SCALE AND IS LOADED AT ONE END, IN THE TIGHTENING DIRECTION, BY THE SPRING FORCE OF A TENSIONING ROD (21) BLOCKED AGAINST TORSION. IN ADDITION TO THAT, THE FOLDING GUIDE DRUM HAS A SPECIAL ELECTRICAL INSURANCE (30) FOR THE TIGHTENING DEVICE, WHICH WORKS IN CONJUNCTION WITH A NEW STOP FOR A ROTARY TENSIONING ORGAN, WHICH, BETWEEN THE STOP POSITIONS, ALLOWS VARIOUS TURNS ORGAN OF MANEUVER (27).