Folding device for web-fed rotary printing presses

Details Folding device for web-fed rotary printing presses Folding device for web-fed rotary printing presses

1981-12-07

1985-04-09

Heinz, A. J.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

74 52, B65H 4518

Patent

active

045099391

ABSTRACT:
Folding device for web-fed rotary printing presses for forming a longitudinal fold in a direction wherein printed copies are conveyed, the longitudinal fold being producible, after a cylinder-crossfold, by a folding blade disposed parallel to the conveying direction, the folding blade being suspended from two drive cranks having the same speed of rotation and being reciprocatingly movable by the latter, the folding blade, in a bottom position thereof, thrusting the printed copies between two driven folding rollers, including an additional crank disposed between the respective drive crank from which the folding blade is suspended, the respective drive crank having a crank pin and the additional crank having a trunnion, the additional crank being coaxially supported by the trunnion thereof on the crank pin of the respective drive crank, and a gear train operatively connected with the additional crank for driving the additional crank at the same rotary speed as that of the respective drive crank and in opposite rotary direction thereof so that a crank pin of the additional crank executes a vertical stroke.

REFERENCES:
patent: 2309047 (1943-01-01), Culbertson
patent: 3363474 (1968-01-01), Ritter
patent: 3995850 (1976-12-01), Hertrich
patent: 4239201 (1980-12-01), Richter

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