METHOD AND APPARATUS FOR FORMING DOUBLE-LAYER MOTOR COIL

摘要

A double-layer coil for an electric motor is formed of a single continuous conductor with the two layers being wound simultaneously. A first length of conductor is wound about a pulley to form a coil and at the end of that coil but without breaking the conductor another coil is commenced to be wound about a rotating bobbin, with the coil of the first length wound on the pulley being caused to orbit the bobbin at a rate twice the bobbin rotation speed, whereby the conductor coil is unwound from the pulley and rewound on the bobbin at and the same time a further conductor is being wound about the bobbin to form a second coil, thereby forming both layers of the coil simultaneously.