Method and device for adjusting the degree of engagement of...

B - Operations – Transporting – 26 – D

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B26D 5/20 (2006.01) G05B 19/41 (2006.01)

Patent

CA 2426971

The invention relates to a method for adjusting the degree of engagement of a tool (6, 7) disposed on the outer radius of at least one associated rotating roll (4, 5) with a web of material (1) running past it. The aim of the invention is to improve the method so that the degree of engagement of the tool can be adjusted without loss of time and without producing any scraps. To this end, for adjusting the degree of engagement of the tool (6, 7) with the web of material (1), first several different degrees of engagement are electronically defined by means of different peripheral speeds of the tool (6, 7) so as to be retrievable. Once an adjuster (13) is activated, the change to another defined degree of engagement takes place during operation precisely when the tool (6, 7) engages with the web so that the new degree of engagement is carried out when the tool (6, 7) engages with the web of material (1) for the next time.

La présente invention concerne un procédé servant à modifier l'état d'engagement dans une bande de matière qui défile (1), d'un outil (6, 7) disposé radialement vers l'extérieur sur au moins un cylindre (4, 5) en rotation associé. Le procédé comporte des améliorations en ce qu'il rend possible, sans perte de temps, une modification sans rognure de l'état d'engagement de l'outil. A cet effet, pour permettre la modification de l'état d'engagement de l'outil (6, 7) dans la bande de matière (1), différents espacements d'engagement peuvent tout d'abord être prédéfinis électroniquement de manière à pouvoir être appelés, grâce à des vitesses circonférentielles de l'outil (6, 7) qui diffèrent en conséquence. Selon l'invention, après activation du dispositif de commutation (13), le passage à un autre espacement d'engagement prédéfini, au cours du fonctionnement, est réalisé précisément dès que l'outil (6, 7) se trouve en position d'engagement, de sorte que le nouvel espacement d'engagement est mis en place lorsque l'outil (6, 7) se trouve dans la position d'engagement suivante dans la bande de matière (1).

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