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Machine translation
1. (WO1980000932) METHOD AND DEVICE FOR BENDING CORRUGATED SHEET-METAL SECTIONS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000932    International Application No.:    PCT/SE1979/000227
Publication Date: 15.05.1980 International Filing Date: 06.11.1979
IPC:
B21D 11/08 (2006.01), B21D 11/20 (2006.01), B21D 13/02 (2006.01), B21D 13/10 (2006.01)
Applicants:
Inventors:
Priority Data:
7811538 08.11.1978 SE
Title (EN) METHOD AND DEVICE FOR BENDING CORRUGATED SHEET-METAL SECTIONS
(FR) METHODE ET DISPOSITIF DE PLIAGE DE SECTIONS DE FEUILLES METALLIQUES ONDULEES
Abstract: front page image
(EN)Method and device for bending sheet-metal sections. It is previously known to bend sectional sheets, but the known art involves certain problems to bring about a non-angular bend with a small radius and without damaging the sheet. According to the invention it is proposed for eliminating said problems, that in connection with the impressing of the sheet portions located closest to the bending axis the lateral portions (1c, 32c, 50c) of the sheet are subjected to an outwardly directed force (17, 39, 56) or prestressing in a plane through the impressions (34; 59), in order to form an outward bulging (40, 58) in the lateral portions (1c, 32c, 50c) and on the same side of the sheet as the impressions (34; 59).
(FR)Methode et dispositif de pliage de sections de feuilles metalliques. On sait deja comment plier des feuilles de metal profilees, mais l"art connu comporte certains problemes concernant un pliage non angulaire avec un petit rayon sans endommager la feuille. Pour eliminer ces problemes, conjointement a l"empreinte des parties de la feuille situee le plus pres de l"axe de pliage, les parties laterales (1c, 32c, 50c) de la feuille sont soumises a une force dirigee vers l"exterieur (17, 39, 56) ou precontraintes dans un plan au travers des empreintes (34, 59), de maniere a former un renflement exterieur (40, 58) dans les parties laterales (1c, 32c, 50c) et du meme cote de la feuille que les empreintes (34, 59).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)