Metal powder feeding device of powder coating bonding machine

The utility model relates to the technical field of powder bonding machines, and discloses a powder coating bonding machine metal powder feeding device which comprises a shell, a fixed plate is fixedly connected to the inner wall of a feeding box, first through grooves which are evenly distributed penetrate through the upper wall and the lower wall of the fixed plate, and a movable plate is arranged on the lower side of the fixed plate. Second through grooves which are evenly distributed penetrate through the upper wall and the lower wall of the movable plate, a sliding block is fixedly connected to the front end of the movable plate, a sliding groove penetrates through the front wall of the feeding box, the front end of the sliding block penetrates through the sliding groove and is fixedly connected with a second rack, and springs are fixedly connected to the two ends of the sliding block. The ends, away from each other, of the springs on the two sides are fixedly connected with the inner wall of the sliding