Automatic feeding device

The utility model relates to an automatic feeding device which comprises a hopper, a rotating shaft, a flexible belt and a driving mechanism. The hopper is provided with a storage space for placing steel pipes, and an opening of the storage space is upward; an output end is arranged at the upper end of the hopper and located on one side of the storage space; the rotating shaft is rotationally connected to the hopper, is located on the side, away from the output end, of the storage space, and is horizontal and higher than the output end; one end of the flexible belt is fixedly connected to the output end, and the other end of the flexible belt is fixedly connected to the rotating shaft; the driving mechanism is used for driving the rotating shaft to wind the flexible belt. The driving mechanism is controlled to drive the rotating shaft to rotate, so that the flexible belt is wound on the rotating shaft and gradually tensioned, and the steel pipe is upwards lifted in the tensioning process of the flexible belt;