Zigzag folding apparatus for a form printing machine

Details Zigzag folding apparatus for a form printing machine Zigzag folding apparatus for a form printing machine

B - Operations, Transporting

65

H

271/27

B65H 45/101 (2006.01) B41F 13/54 (2006.01)

Patent

CA 1307014

ABSTRUCT OF DISCLOSURE A zigzag folding apparatus for a form printing machine) having a pair of rolls for outfeeding a paper strip being mounted to folding arms for folding the paper strip in a zigzag, one of the folding arms having a swing lever synchronized for swinging motion with the arm, a swing center of the lever coinciding coaxially with the point of contact between both the rolls, so that the rolls can perform an auxiliary folding operation to assist the folding operation of the folding arms under the condition in which the point of outfeeding the paper strip remains stationary; and a swing drive mechanism for activa- ting the swing lever having main shafts on the drive side and out shafts for a swing section disposed in parallel relationship, the main shaft and the output shaft being connected one another by means of a shift transmitting mechanism in which a ratio of transmitting is chaged by operating a screw from the outside, so that the adjustment can be made according to a width of swing on the swing lever and the locations of folding the paper strip during the running of the machine.

550924

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