DISPOSITIVO DI CARICA ROTTAME PER CARICARE ROTTAME IN UN CROGIOLO DI UN APPARATO DI FUSIONE SOTTOVUOTO

Scrap charging device (80) to charge scrap (90) in a crucible (81) of a vacuum-melting apparatus (8), said scrap (90) being bound with a wire (9); the device (80) comprising - a first tubular body (1) defining a vertical axis (Y); - a second tubular body (2) arranged coaxially inside or outside said first tubular body (1); - first actuating means (41) adapted to translate the first tubular body (1) and the second tubular body (2) along said vertical axis (Y); - second actuating means (42) adapted to rotate the second tubular body (2) with respect to the first tubular body (1) or vice versa, about said vertical axis (Y); wherein the lower end (19) of the wall (10) of the first tubular body (1) has at least one opening (11a, 11b) shaped so that said lower end (19) has at least one protrusion (12a, 12b) along said at least one opening (11a, 11b), so that the wire (9) which bounds the scrap (90) can pass through said at least one opening (11a, 11b) and be suspended on said at least one protrusion (12a, 12b); wherein the lower end (29) of the wall (20) of the second tubular body (2) has at least one opening (21a, 21b); wherein the device (80), according to the angular position of the second tubular body (2) with respect the first tubular body (1), can take a loading position which allows to pass the wire (9) through said at least one opening (11a, 11b) of the first tubular body (1) and through said at least one opening (21a, 21b) of the second tubular body (2), and which allows to suspend the wire (9) on said at least one protrusion (12a, 12b); and wherein said second tubular body (2) is adapted to be rotated, in a first direction of rotation, from said loading position to a locking position, wherein the wall (20) of the second tubular body (2) at least partially obstructs the opening (11a, 11b) of the first tubular body (1) so as to prevent the wire (9) suspended on the protrusion (12a, 12b) from leaving said at least one protrusion (12a, 12b); and is adapted to be rotated in a second direction of rotation, opposite to the first direction of rotation, from said locking position to a release position allowing the release of the wire (9) from said at least one protrusion (12a, 12b).