Method of folding and shaping sheet, and apparatus for...

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 45/30 (2006.01) B31D 3/00 (2006.01) B31F 1/00 (2006.01) B65H 45/101 (2006.01)

Patent

CA 2254746

A method of folding and shaping a sheet, by which a sheet formed with a single or a plurality of mountain-shaped folds and a single or a plurality of valley- shaped folds, the first and second folds being parallel and alternate, can be rapidly and smoothly folded and shaped, and an apparatus therefor. The method comprises the steps of supplying a sheet (1) in a naturally developed state onto a support guide (3), and applying a light pressing pressure on the sheet (1) in a direction, in which folds (10, 11) are increased in bent angles, by means of a pressing guide (6), which acts in a direction of moving toward and away from a support surface of the support guide (3) when a pair of bending tools (5a, 5b) begin to apply bending pressures on the sheet (1) or are in the course of applying bending pressures on the sheet (1) while applying bending pressures on the sheet (1) in a direction, in which the sheet (1) is bent along the respective folds (10, 11). The sheet (1) can be correctly and smoothly folded and shaped along the respective folds (10, 11).

Procédé et appareil destinés à plier et à mettre en forme une feuille et permettant d'effectuer de manière rapide et égale le pliage et la mise en forme d'une feuille par création d'un ou de plusieurs plis et replis le premier et le second pli étant parallèles et alternés. Le procédé comprend plusieurs étapes: une feuille (1) se trouvant dans son état naturel, c'est-à-dire déroulée, est placée sur un guide de soutien (3); un guide de pression (6), qui avance et recule par rapport à la surface de soutien du guide de soutien (3), exerce une légère pression sur la feuille (1) dans la direction souhaitée pour augmenter l'angle de courbure des plis (10,11) lorsqu'une paire d'instruments de pliage (5a, 5b) commencent à exercer ou sont en train d'exercer des pressions de pliage sur la feuille (1) dans la direction souhaitée, pour plier la feuille (1) le long des plis correspondants (10, 11). La méthode décrite permet de plier la feuille (1) le long des plis correspondants (10, 11), rapidement et de manière appropriée.

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