Automatic ball feeder of rotary drum

The utility model relates to an automatic ball feeder of a rotary drum in the field of ball feeders. The ball feeder comprises a ball feeder body, a motor set and a driving component, wherein the driving component comprises an upper driving wheel, a lower driving wheel and a rotary drum; a wheel shaft of the upper driving wheel is connected with a driving shaft of the motor set, and the upper driving wheel is connected with the lower driving wheel by a belt; the lower driving wheel and the rotary drum are fixedly connected on a middle shaft in series; two ends of the middle shaft are respectively supported by a base; at least four support plates, which correspond to an output port of the ball feeder body, are evenly arranged at the outer edge of the rotary drum; a baffle plate is arranged above the output port of the ball feeder body, and the bottom end face of the baffle plate corresponds to the outer edge of each support plate which rotates along with the rotary drum; a transporting slot is arranged at the