Blanking buffer device

The discharging buffering device comprises a support, a supporting rod and a buffering piece, the supporting rod is rotationally connected to the support, and the rotating axis of the supporting rod is horizontal; the buffering piece is connected to the supporting rod, the two ends of the buffering piece are located on the two sides of the rotating axis of the supporting rod correspondingly, and distances exist between the two ends of the buffering piece and the rotating axis of the supporting rod. The gravity center of the buffering piece is located on one side of the supporting rod rotating axis. Kinetic energy generated after the steel pipe self-cutting device falls down enables the buffer piece to rotate, the gravity center of the buffer piece rises, namely, the kinetic energy of the steel pipe is converted into gravitational potential energy of the buffer piece, and then the falling speed of the steel pipe is slowed down. And the decelerated steel pipe moves downwards along the buffer piece and falls ont