Bent pipe making machine and feeding device thereof

The utility model provides a bend pipe machine and its feeding device, feeding device includes frame, feeding unit, transfer unit and positioning unit, feeding unit includes first material carrying table, limit rod group and first drive mechanism, first material carrying table is slideably connected with frame along the height direction of frame, limit rod group has the accommodation position, and the first drive mechanism is connected with the first material carrying table along the height direction of frame. The conveying unit comprises a conveying belt assembly and a second driving mechanism, the second driving mechanism can drive an input shaft of the conveying belt assembly to rotate, the first driving mechanism can drive the first material carrying table to move in the height direction, and the first material carrying table moves in the conveying direction of the conveying belt assembly. The conveying unit is located between the feeding unit and the positioning unit, the positioning unit comprises a con