High frequency contact welding apparatus with skewed contacts

Details High frequency contact welding apparatus with skewed contacts High frequency contact welding apparatus with skewed contacts

B - Operations, Transporting

23

K

B23K 31/02 (2006.01)

Patent

CA 2349628

In high frequency welding apparatus in which high frequency electrical heating current is supplied to metal surfaces to be welded together by contacts engaging the metal which is advanced toward a weld point, the contacts engage the metal in advance of the weld point and have contact faces with downstream edges contacting the metal. The downstream edge of one of the contacts, or the downstream edges of the both of the contacts, is or are skewed with respect to the path or paths of the metal surfaces to be heated so that the downstream edge or edges extend at an acute angle of about 35° to about 55° with respect to the path or paths of the metal surface or surfaces, the angle being intermediate the contacts and the weld point.

Selon l'invention, dans un appareil de soudure à haute fréquence dans lequel un courant électrique de chauffe haute fréquence est appliqué sur des surfaces métalliques (10, 11; 42-49; 52-54) à souder ensemble au moyen de contacts (8, 9; 25-26) venant en contact avec le métal avancé jusqu'au point de soudure (1; 1a-f), les contacts (8, 9; 25-26) viennent en contact avec le métal avant le point de soudure (1; 1a-f) et présentent des faces de contact dotées de bords d'aval (12-13) étant en contact avec le métal. Le bord d'aval d'un des contacts (8 ou 9 ou 25 ou 26), ou les bords d'aval des deux contacts (8-9; 25-26), est ou sont asymétriques par rapport à la ou aux trajectoires des surfaces métalliques (10-11; 42-49; 52-54) à chauffer, de manière que le ou les bords d'aval (12 ou 13) forment un angle aigu compris entre environ 35 DEG et 55 DEG par rapport à la ou aux trajectoires de la surface ou des surfaces métallique/s (10-11; 42-49; 52-54), l'angle étant situé entre les contacts (8, 9; 25-26) et le point de soudure (1a; 1a-f).

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