Driving motor of roller car

The utility model provides a driving motor of a roller car, and particularly relates to the technical field of sewing machines. The upper feeding wheel driving motor and the lower feeding wheel driving motor are each provided with a cover, a PCB, a machine body, a rotating shaft, magnetic steel and a flange plate, the rotating shafts are arranged in the machine bodies, the magnetic steel is fixedly arranged at the tail ends of the rotating shafts, the magnetic steel is adjacent to magnetic coding chips of the PCBs, the PCBs and the covers are sequentially fixed to the machine bodies, the upper feeding wheel driving motor is provided with the flange plate, and the upper feeding wheel driving motor is provided with the flange plate. The flange plate is arranged between a PCB of the upper feeding wheel driving motor and the machine body, and the PCB is fixed to the flange plate. The upper feeding wheel driving motor and the lower feeding wheel driving motor are closed-loop stepping motors with signal feedback, e