Apparatus for folding a foldable sheet

Details Apparatus for folding a foldable sheet Apparatus for folding a foldable sheet

1985-09-03

1987-01-13

Combs, E. Michael

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493405, 493416, B31F 100, B31F 700

Patent

active

046361928

ABSTRACT:
A process and a device for folding a foldable sheet, in particular a map sheet, made of stiff paper or plastic, which is star-folded, in which the outward folds (13,14) and inward folds (12) that meet at the center point (M) of the sheet (10) are formed simultaneously by V-shaped carriers (33a and 33b) and first folder elements (37a,37b) that can be swung upwards perpendicular to these and in which, when the halves (10a,10b) of the sheet (10) that are defined by the outward folds (13,14) are folded together the corner inward folds (23,24) are made by second folder elements (71a,71b) that are articulated onto the side edges (72) of the carriers (33a,33b) and swing down on these, whereupon the two folded halves (10a,10b) of the sheet (10) are pressed together between the carriers (33a and 33b), the clamping plates (45), the second folder elements (37a,37b) before the folded sheet that has been folded together is grasped by the gripper (40) and withdrawn between these plates after the designated plates have been depressurized.

REFERENCES:
patent: 3700230 (1972-10-01), Cook
patent: 3753558 (1973-08-01), Sheroff et al.
patent: 4502711 (1985-03-01), Muth
patent: 4571237 (1986-02-01), Vogtlander

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