Powder spraying 3D printing head

The utility model provides a powder spraying 3D printing head, and relates to the technical field of powder spraying 3D printing heads. The powder spraying 3D printing head comprises a 3D printing head body, a rotating rod is arranged in the 3D printing head body, a gear is fixedly connected to the outer side of the rotating rod, a gear ring is connected to one side of the gear in a meshed mode, and a plurality of springs are fixedly connected to the interior of the gear ring. According to the powder spraying 3D printing head, an annular plate rotates to drive a circular roller to rotate, at the moment, the circular roller slides along the outer wall of a circular plate, the annular plate can vibrate under the elastic force effect of a spring, the outer wall of the circular plate is uniformly vibrated, and therefore powder of the 3D printing head can uniformly fall off; by means of the structure, the 3D printing head can evenly fall, and the situation that in the printing process of the 3D printing head, the