| CPC H01F 41/082 (2016.01) [H01F 41/09 (2016.01)] | 13 Claims |
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1. A method to manufacture a coil (9-14) around a component (102) of an article (100) using an automatic machine (18) and comprising the steps of:
moving, by means of a main conveyor (19) of the automatic machine (18) and along a working path (P1), a carriage (20) provided with a seat (22, 23, 24) designed to house the component (102);
placing, in an input station (S1) of the automatic machine (18) arranged along the working path (P1), the component (102) in the seat (22, 23, 24) of the carriage (20);
coupling, in a winding station (S3, S6, S9, S12, S15, S18) of the automatic machine (18) arranged along the working path (P1) downstream of the input station (S1), an electrically conductive wire (15) around the component (102) in order to obtain a series of turns making up the coil (9-14);
locking an initial end of the wire (15) by means of a first clamp (50), which is integral with the carriage (20) before starting to wind the wire (15); and
locking a final end of the wire (15) by means of a second clamp (51), which is integral with the carriage (20), at the end of the winding of the wire (15);
locking, before locking the initial end of the wire (15) by means of the first clamp (50), the initial end of the wire (15) also by means of a third clamp (54), which is arranged in a fixed position on the outside of the main conveyor (19) in the area of the winding station (S3, S6, S9, S12, S15, S18) and is aligned with the first clamp (50); and
locking, after having locked the final end of the wire (15) by means of the second clamp (51), the final end of the wire (15) also by means of a fourth clamp (55), which is arranged next to the third clamp (54) in a fixed position on the outside of the main conveyor (19) in the area of the winding station (S3, S6, S9, S12, S15, S18) and is aligned with the second clamp (51),
wherein a work cycle of the automatic machine (18) lasts from an initial instant, in which the carriage (20) carrying the component (102) devoid of the coil (9-14) reaches the winding station (S3, S6, S9, S12, S15, S18), to a final instant, in which the carriage (20) carrying the component (102) provided with the coil (9-14) leaves the winding station (S3, S6, S9, S12, S15, S18), and
wherein:
the coil (9-14) is made up of a number of turns less than 50;
the wire (15) is directly wound around the component (102) being made to rotate around the component (102) during a winding step which constitutes a fraction of the work cycle of the automatic machine (18);
the diameter of the wire (15) is less than 500 microns; and
the time duration of the winding step during which the wire (15) is made to rotate around the component (102) ranges from 50% to 70% of a total time duration of the work cycle of the automatic machine (18).
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