Printing substrate handling, particularly sheet folding apparatu

Details Printing substrate handling, particularly sheet folding apparatu Printing substrate handling, particularly sheet folding apparatu

1982-09-22

1984-08-14

Eickholt, E. H.

Sheet-material associating

Associating and folding

Sheet associating

B42C 104

Patent

active

044652690

ABSTRACT:
To permit high speed operation of printing substrate handling apparatus, using cylinders operating, for example, at speeds in the order of about 650 rpm, with positive guidings of sheets, a sheet folding and handling cylinder in the form of spaced staggered circumferential cylindrical portions has a plurality of sets of rollers (13, 14, 15) located within the circumferential outline thereof. An endless conveyer belt, cable or the like (11) is guided by a first guide roller (12) located adjacent the contact line of a sheet collection cylinder (2) and the sheet folding and handling cylinder (1) to guide the belts (11) to as close to the contact line (A) of said cylinders and then into the circumferential outline, to be then guided by the rollers (13, 14, 15) within the outline, one--preferably the leading one (15)--being positioned more inwardly of the circumference than the others, so that the angle which the belts (11) make at the contact line with the circumference of the handling and folding cylinder changes upon rotation of the folding cylinder to permit penetration within the circumference of the folding cylinder of a cutter or folding blade (6) to cut a web, or fold a sheet being transported on the collection cylinder (2). The belts are guided out of the circumference of the sheet handling and folding cylinder (1) in essentially trangential direction to lift the folded edge (8) out of grippers (7) on the folding cylinder and gently transfer the sheets to further belt conveyors (33, 34).

REFERENCES:
patent: 1439580 (1922-12-01), Schwartz
patent: 1717257 (1929-06-01), Rasmussen
patent: 2019930 (1935-11-01), Quick et al.
patent: 3263988 (1966-08-01), Heimlicher
patent: 4211396 (1980-07-01), Michalik

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