Method and winding machine for making an electric component provided with a spiral-shaped winding

An automatic winding machine (20) for making an electric component (1) provided with a support (2) having at least one side (2′, 2″), and wherein at least one spiral-shaped slot (6′, 6″), coaxial with respect to an axis (X) of the support (2), is present on said at least one side (2′, 2″), and wherein at least one conducting wire (4), defining a spiral-shaped winding (3′, 3″), is housed inside the at least one slot (6′, 6″),

• the winding machine (20) comprising a work station (22) and a feeding unit (21), the latter being configured for feeding the conducting wire (4) to the work station (22),
• wherein the work station (22) comprises a first spindle (31), a corresponding first drive shaft (33), means (46, 47) for restraining the support (2) coaxially on the drive shaft (33), a first wire guiding flange (49) and a pressure roller (53), and
• wherein the support (2) and the first drive shaft (33) are rotatable on the axis (X) of the support (2), and
• wherein the pressure roller (53) can be positioned against a side (2′) of the support (2) so as to be able to roll on at least one slot (6′) and is susceptible to radial displacements with respect to the axis (X) of the support (2), and
• wherein the wire guiding flange (49) is mounted coaxially on the first drive shaft (33) and is susceptible to translations along the first drive shaft (33), between a proximal position and a distal position with respect to the support (2), and is susceptible to synchronous rotations with the first drive shaft (33) and/or relative rotations with respect to the first drive shaft (33), and
• wherein the first wire guiding flange (49) is spiral-or helical-shaped and the insertion of the conducting wire (4) into the slot (6′) occurs by rotating the first drive shaft (33) together with the support (2), by rolling the pressure roller (53) on the slot (6′) and simultaneously pushing the conducting wire (4) into the slot (6′), thus imparting a radial movement to the pressure roller (53) with respect to the axis (X) of the support (2), wherein the radial movement of the pressure roller (53) is guided by the side (49′) of the first wire guiding flange (49).