Dispositivo de soldadura por inducción electromagnética para unir materiales compuestos y método de unión relativo

A portable welding device (1) comprising: a base (3) facing a work surface (4), in turn designed to receive tapes (2) in electrically conductive composite materials to be joined or defined by at least one already positioned tape (2); an operating head (5) receiving one tape (2) at a time and movable with respect to the base (3) along at least a first movement line (L1) parallel to the work surface (4); a motorized arm (6) connecting the operating head (5) to the base (3) and selectively activatable to impart movements to the operating head (5); and feeding means (8) selectively activatable to feed one tape (2) at a time to the operating head (5) and connected to the operating head (5); the operating head (5) comprises a positioning roller (9) receiving a tape (2) at a time; a pressure roller (10) spaced from and aligned with the positioning roller (9) along the first movement line (L1); and an inductor (11) interposed between the positioning roller (9) and the pressure roller (10) with reference to the first movement line (L1).