Variable turn coil winder

Details Variable turn coil winder Variable turn coil winder

1975-11-24

1976-09-21

McGehee, Travis S.

Wireworking

Combined machines

29605, 140 921, 242 709, B21F 304

Patent

active

039813339

ABSTRACT:
This invention relates to an apparatus facilitating the mechanized manufacture of intermediately tapped electrical transformers. The apparatus winds coils on open ferromagnetic bobbin-type cores automatically by winding wire around the bobbin cores, pulling the tap, if any, and securing the wires so that they will not unwind. The bobbins are manually loaded into a rotatable turret wheel which sequentially positions them in a work station. A motor driven bail engages the wire and causes the wire to be wrapped around the bobbin located at the work station a predetermined number of times. When the number is reached, a solenoid operated hook grasps the wire, pulls the wire away from the bobbin, forming a loop, and is rotated so as to twist the wire as the bail continues to cause a second predetermined number of turns to be wound on the bobbin. The twisting ultimately causes the wire loop between the first and second sets of windings to snap at the hook creating a winding tap. The turret then rotates to further stations which apply solvent to secure the wires, dry the solvent, separate the wound coils and remove the wound coils from the apparatus.

REFERENCES:
patent: 3263309 (1966-08-01), Carman et al.
patent: 3409980 (1968-11-01), Lawless et al.

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