Sheet feeding or delivering – Delivering – By endless conveyor
Patent
1976-09-28
1978-04-25
Saifer, Robert W.
Sheet feeding or delivering
Delivering
By endless conveyor
271183, 271223, B65H 2904, B65H 3120
Patent
active
040859304
ABSTRACT:
A frame member extends from the last printing unit of a printing machine to a table upon which the freshly printed sheets are piled. A plurality of spaced endless chains are reeved about idler sprockets positioned adjacent the printing unit at one end and about driven sprockets at the other end where the printed sheets are stacked in a pile. Transversely extending gripper bars are secured to the chains and pass with the chains along a continuous path from the printing unit to the pile over a sheet guide assembly. The upper end portion of the sheet guide assembly is supported by bearing assemblies which also support a plurality of suction wheels that are positioned between the upper end of the sheet guide assembly and the pile. Actuating devices advance the bearing assemblies toward and away from the pile to thereby position the sheet guide assembly and the suction wheels for depositing a sheet of a selected size onto the pile. Movement of the leading edge of a sheet over the sheet guide assembly creates a continuous cushion of air from the printing unit to the end of the sheet guide assembly. The cushion of air supports the freshly printed sheet above the guide assembly and removed therefrom to prevent smearing of the sheet. The printed sheet passes from the upper end of the guide assembly onto the periphery of the suction wheels which slow the movement of the sheet and exert a downward force upon the trailing edge of the sheet to prevent interference with the next following sheet and contact with any rigid surface that could smear the freshly printed sheet.
REFERENCES:
patent: 2969980 (1961-01-01), Claybourn
patent: 3081082 (1963-03-01), Spooner et al.
patent: 3136541 (1964-06-01), Peyrebrune
Federhen Ernst
Weisgerber Willi
Miller Western Corporation
Saifer Robert W.
LandOfFree
Sheet delivery mechanism for sheet fed printing machines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sheet delivery mechanism for sheet fed printing machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sheet delivery mechanism for sheet fed printing machines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2419089