Air gouging machine head mechanism

The utility model discloses a gouging machine head mechanism. The device comprises a fixed joint, a gun head, nozzles, clamping plates and sleeves, one end of the fixed joint is connected with one endof the gun head; the other end of the gun head is provided with an internal thread and the nozzle is provided with an external thread; the gun head is in threaded connection with the nozzle; two opposite slotted holes are formed in the gun head, clamping plates are arranged in the slotted holes, arc grooves are formed in the opposite inner sides of the two clamping plates, a sleeve is arranged onthe outer side of the gun head and located in the slotted holes in a sleeving mode, round holes are oppositely formed in one end of the sleeve, the conductive column penetrates through the round holes to be connected with the clamping plates, and an extrusion spring is arranged in the other end of the sleeve. The fixing connector, the gun head, the nozzle, the clamping plate and the sleeve are arranged in a split mode, al