Out-of-phase electrical welder and process

Details Out-of-phase electrical welder and process Out-of-phase electrical welder and process

B - Operations, Transporting

29

C

B29C 65/34 (2006.01) B29C 65/30 (2006.01)

Patent

CA 2720289

Electrical welding process and device using intersect-ing, electrically contacting welding elements are disclosed. The intersect-ing welding elements are powered out of phase from each other, such that there is no short circuiting around the welding elements being heated and no electrical insulation is needed between intersecting welding elements. Current directors can be used to alternatingly direct the cur-rent through the intersecting welding elements. The process and device can be used to weld various work-pieces, including thermoplastic binders and folders.

Linvention concerne un procédé de soudage électrique et un dispositif utilisant des éléments de soudage se croisant en contact électrique. Les éléments de soudage se croisant sont alimentés de manière déphasée, de sorte quil ny a pas de mise en court-circuit autour des éléments de soudage qui sont chauffés et quun isolement électrique nest pas nécessaire entre les éléments de soudage se croisant. Des dispositifs dorientation du courant peuvent être utilisés pour diriger le courant de manière alternée à travers les éléments de soudage se croisant. Le procédé et le dispositif peuvent être utilisés pour souder diverses pièces de fabrication, y compris des reliures et des chemises thermoplastiques.

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