Patent GB-1274561-A (GB)
Title: Apparatus for winding and placing coils in the slots of a stator
IPC: H02K15/06
Filed: 1970-01-05
Abstract: 1,274,561. Winding and inserting stator coils; winding wire. INDUSTRA PRODUCTS Inc. 5 Jan., 1970 [16 Jan., 1969], No. 473/70. Headings B3A and B3E. Apparatus 1 for winding and placing coils in stator slots comprises an indexing conveyer, a plurality of placer heads 5A, 5B on the conveyer means 11 for winding coils and transferring them to a placer head, means for indexing the conveyer to bring a placer head carrying coils to a placing station 9, and means at the placing station for pushing the coils from the head into the stator slots. Coil winding.-At the commencement of a winding cycle a winding flyer 19 is aligned with a coil from F1, Fig. 9, which is arranged with pins 81a-81f lowered. The first coil (C1) of the first pole winding (P1) is wound on these pins, the flyer 19 traversing the pins axially for level winding of the wire. When the required number of turns have been wound, the flyer motor is stopped or slowed and a slide 73 is lowered to position pins (83a)-(83f) around the pins 81a-81f, Fig. 7 (not shown). A second coil (C2) is then wound around the coil (C1), the process being repeated as slides 75, 77, 79 are successively lowered to permit winding of coils (C3), (C4), (C5). When the last coil has been wound, the carriage 49 of the form F1 is raised by cylinders 63, all the slides 73-79 with their associated pins 81a-81f to (89a)-(89f) moving in unison. The winding flyer 19 is then aligned with the form F2 and the cylinders 63 lower its carriage 49 with its asscoiated pins 81a-81f. The flyer then winds coils (C1)-(C5) of a second pole winding (P2) similarly to the winding (P1). When the winding of pole windings (P1), (P2) is complete and the carriage 49 of coil form F2 raised, a detent (43) is withdrawn from a socket (47) in a turret 15, Fig. 5 (not shown) and the turret is indexed through 180 degrees in a clockwise direction. Pole windings (P1), (P2) are now at the transfer station 7 and coil forms F3, F4 are at the winding station with their carriages 49 and slides 73-79 raised. The carriage of form F3 is lowered to permit winding of a further first pole winding (P1) and the wire between forms F2 and F3 is cut. Coil transferring.-The carriages 49 of the coil forms F1, F2 are lowered together with the pins 81a-81f to (89a)-(89f), so that the innermost pins are aligned with fingers 379 of a placer head 5A, Fig. 19, with the coils aligned with the spaces between the fingers. The outermost pins (81e)-(81f) to (89e)-(89f) are driven towards the remaining pins, thereby collapsing the coil forms F1, F2. Stripper cylinders 249 are actuated to drive strippers 237 downwardly on the pins thereby pushing the windings on the placer head 5A. The strippers move over the fingers 379, which fit in holes in the strippers. When the coils are positioned, the strippers are withdrawn, the carriages 49 raised, the pins moved to their expanded winding position and the slides 73- 79 raised. Detents for an index table 3 are withdrawn to permit it to be indexed 180 degrees to bring the placer head 5A to the placer station. Placing the coils.-At the placing station the tubular holder 383 of the fingers 379 is aligned with a tubular guide 505 for a stripper rod 529. A stator S is applied to the fingers and cylinders 473 are actuated to swing clamps 471 over the stator, whereupon a rod 439 is pulled downwardly to secure the stator on the fingers. Screw shafts 483 are then rotated to drive a carriage 481 upwardly. Wedge push rods 527 are secured to the carriage and they push bore wedges of insulating material into the stator slots. As the rod 529 moves upwardly an extension 531 thereon enters a stripper 405, which pushes the coils from the fingers into the stator slots. A detent in the stripper engages the extension 531, so that when the rod 529 is withdrawn, the stripper moves downwardly until it abuts the holder 383. Withdrawal of the rod from the placer head permits further indexing of the table 3 for the next work cycle.