Air knife

The utility model discloses an air knife, including cutter body and labial lamina, the cutter body is one end open -ended spherical structure, the inside cavity that is equipped with of cutter body, and the both sides of cutter body opening part set firmly the labial lamina tangent with the cutter body respectively, the inboard chamfer of labial lamina front end is handled, forms the chamfer face of inside convergence, the tail end of labial lamina is equipped with lock nut and adjustment lead screw, be equipped with the air feed system in the cutter body, the utility model discloses the beneficial effect who produces is: improvement through the tool setting body structure for the cutter body internal energy forms two strands of stable air currents, has changed the interior air current disorder of original cutter body and has resulted in the not enough of lip air current unstability, and the labial lamina structure of convergence simultaneously makes the thin slice air current concentrate, is difficult for di