Process and apparatus for weakening an automotive trim piece...

Details Process and apparatus for weakening an automotive trim piece... Process and apparatus for weakening an automotive trim piece...

B - Operations, Transporting

23

K

B23K 26/00 (2006.01) B23K 26/03 (2006.01) B23K 26/38 (2006.01) B29C 59/00 (2006.01) B60R 21/20 (2006.01)

Patent

CA 2401035

A method and apparatus is disclosed for forming lines of weakness in an automotive trim piece (16, 16A, 16B) so as to enable formation of an airbag deployment opening in the trim piece. A cutting beam (12), such as a laser is directed at the trim piece surface to be scored and a sensor emits a sensing beam, and a beam combining device (22) receives both the sensor beam and the laser beam and causes downstream beam segments to be colinear with each other as they impinge the trim piece surface. The scoring (40, 40A, 40B) is thereby able to be carried out in a single pass, and is precise, repeatable and independent of cutting depth, angle of cutting, scoring patterns, material inconsistency, material color, and surface grain variability.

L'invention concerne un procédé et un appareil destinés à former des lignes de découpe dans une garniture d'automobile (16, 16A, 16B), de façon à permettre la formation d'une ouverture dans la garniture pour le déploiement d'un coussin de sécurité gonflable. Ce procédé consiste à orienter un faisceau de découpage (12), tel qu'un laser, et un faisceau émis par un capteur, contre la surface de la garniture à découper, ces faisceaux étant mélangés par un mélangeur de faisceaux (22) produisant, en aval, des segments de faisceaux colinéaires lorsqu'ils atteignent la surface de la garniture. Le découpage (40, 40A, 40B) peut ainsi être effectué en un seul passage précis pouvant être répété, indépendamment de la profondeur, de l'angle, des motifs de découpage, ainsi que de la consistance, de la couleur et de la variabilité du grain de surface du matériau.

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