Transfer device

Transfer device comprising a central structure (20), having at least one transport segment (S21, S22, S23), with drive means (30-1, 30-2, 30-3), the at least one transport segment configured to receive a carriage (10), movably mounted with respect to the central structure, in a direction of movement, each carriage having a plate (11) bearing a series of permanent magnets (110), in the direction of movement, the drive means (30) comprise a worm (30), along the at least one transport segment (S21, S22, S23), said worm comprising a ferromagnetic helical perimeter (301, 302, 303), while being mounted so as to be rotatable about an axis parallel to said direction of movement, and arranged such that successive turns (301, 302, 303) of the helical perimeter are adjacent to at least some of the permanent magnets (110) of said series, the carriage (10) being held in place on the at least one transport segment (S21, S22, S23) by an attraction between the permanent magnets (110) and the worm (30), the at least one transport segment is defined on rails (36, 38) and the rails (36, 38) are vertical with respect to one another.