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

1987-10-29

1989-08-29

Laroche, Eugene R.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

270 39, B41L 132

Patent

active

048613274

ABSTRACT:
A zigzag folding apparatus for a form printing machine has a guiding device for paper feeding disposed in the front end thereof, folding arms for holding paper form blanks in a zigzag along their respective transversely perforated lines through rightward and leftward swing movements thereof effected by crank shafts, and a plurality of rotary spirals for arranging the paper blanks folded by the folding arms in a pile through guiding along the fold lines of the same. Particularly, the crank shafts are connected via a rotating transmission mechanism of gearing to a servo motor for folding drive which is controlled with control signals. Additionally, the apparatus has a device for rightward and leftward positioning of said rotary spirals in accordance with a folding top-to-bottom length of the paper blank, a device for positioning the same in directions at right angles to the rightward and leftward directions in accordance with a lateral width of the paper blank, and motors for folding top-to-bottom length determining and lateral width determining respectively which are controlled with control signals.

REFERENCES:
patent: 4030720 (1977-06-01), Jones
patent: 4623136 (1986-11-01), Bunch, Jr.

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