Mechanism for rapidly cleaning recovered sand on sand box

The utility model discloses a mechanism for quickly cleaning recovered sand on a sand box, which comprises a working box, leakage net plates are fixedly arranged on two sides of the top end of the working box, recovery box bodies are arranged at the bottom ends of the two leakage net plates, and leakage holes communicated with inner cavities of the recovery box bodies are formed in the bottom ends of the leakage net plates. Rotatable protection limiting mechanisms are arranged on the two sides of the top ends of the two leakage net plates, and vibration mechanisms are arranged at the bottom ends of the leakage net plates. By means of the leakage net plate, the recovery box body, the protection limiting mechanism and the vibration mechanism which are arranged outside the working box, formed products can be driven to rise out of the working box when the working plane rises, so that unused sand on the products can flow into the leakage net plate due to self flowability, and all the sand flows back into the recov