Automatic chip collecting device for numerical control machine tool

The utility model discloses an automatic chip collecting device for a numerical control machine tool, which comprises a primary material collecting bin, the top of the primary material collecting bin is fixedly arranged at the bottom of the numerical control machine tool, the bottom of the primary material collecting bin is connected with a secondary compression bin through a material pipe and is provided with a weighing sensor, and a push plate connected with a first driving mechanism is arranged in the primary material collecting bin in a sliding manner; a pneumatic vibrator is arranged on the outer wall of the material pipe; the second-stage compression bin is communicated with a negative pressure fan, a pressing plate connected with a second driving mechanism is arranged in the second-stage compression bin in a sliding mode, a proximity switch is arranged on the other side of the second-stage compression bin, a chip collecting box is arranged below the other end of the second-stage compression bin, and a