Bordering and/or crease-closing machine and method for...

B - Operations – Transporting – 21 – D

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Details

B21D 39/02 (2006.01) B21D 19/04 (2006.01)

Patent

CA 2349890

Formerly, several machines or workstations have been required for bordering and closing creases, especially on pipes used in ventilation technology. The invention provides a machine that can carry out all of the operations without the workpiece having to be rechucked. By positioning the closing wheel (6), known per se, underneath the work surface, all of the operations, including the insertion of a sealing strip, can be carried out precisely and economically at the same workstation. According to a preferred method, a bead is first pressed in the workpiece (100) using a moulding roll (2) and a beading and feeding roll (1). During machining with these hydromechanically driven rolls (2, 1), the workpiece (100) is held in the correct working position. The closing process is carried out from the bottom and enables optimum adjustment of the angle of intervention on the closing wheel (6) and reduces wear.

Actuellement, pour border et fermer des plis notamment de tuyaux dans l'industrie de la ventilation, on utilise plusieurs machines ou postes de travail. L'invention permet de réaliser l'ensemble des opérations sur une machine sans déplacement de la pièce. Le positionnement de la roue de fermeture (6) connue sous la surface de travail permet d'exécuter toutes les opérations, y compris la pose d'une bande d'étanchéité, de façon précise et rationnelle dans le même poste de travail. Selon un procédé préféré, on estampe d'abord dans la pièce (100) une moulure à l'aide d'un rouleau de compression (2) et d'un rouleau de moulure et d'alimentation (1) et la pièce (100) est maintenue dans la bonne position de travail pendant l'usinage par ces rouleaux (2, 1) à entraînement hydromécanique (2, 1). Le procédé de fermeture effectué par en-dessous permet également un réglage optimal de l'angle de pression de la roue de fermeture (6) et réduit l'usure.

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