US Patent No. 10,462,853

INDUCTION PRE-HEATING AND BUTT WELDING DEVICE FOR ADJACENT EDGES OF AT LEAST ONE ELEMENT TO BE WELDED


Patent No. 10,462,853
Issue Date October 29, 2019
Title Induction Pre-heating And Butt Welding Device For Adjacent Edges Of At Least One Element To Be Welded
Inventorship Marco Fanetti, Campagnola Cremasca (IT)
Assignee Illinois Tool Works Inc., Glenview, IL (US)

Claim of US Patent No. 10,462,853

1. An induction pre-heating and butt welding device for adjacent edges to be joined of at least one element to be welded, of the type comprising an induction pre-heating head of the adjacent edges and a welding head arranged in tandem with respect to the pre-heating head, immediately downstream of the pre-heating head, with respect to a welding direction along which, in use, the pre-heating and welding heads are moved according to a welding trajectory; characterized in that the pre-heating head comprises, in combination:support structure shaped as a sliding block and adapted to move over the edges to be welded, parallel thereto;
a first inductor lying in a first plane, which is parallel to a plane containing, or passing through, the edges to be welded, which is integrally supported by the support structure at a predetermined distance from the edges to be welded; and
a second inductor lying in a second plane, perpendicular to the first plane and integrally supported by the support structure so as to be in use interposed between the edges to be welded and arranged at a predetermined distance from the first inductor.