Air blow nozzle and tip dresser equipped with air blow nozzle

An air blow nozzle configured to be attached to a tip dresser, the tip dresser including a housing case, a rotary holder, and a cutting member, the housing case including a hollow part therein and a communication hole in communication with the hollow part, the rotary holder configured to be disposed in the hollow part so that the rotary holder is detachable through the communication hole and to be disposed rotatably about an axis of rotation extending along a center of a hole of the communication hole, the rotary holder including a curved recess corresponding to the communication hole and a penetrating part extending through along the axis of rotation, the cutting member configured to be attached to an inner face of the penetrating part, the tip dresser configured so that insertion of an electrode tip for spot welding into the curved recess through the communication hole in a state where the rotary holder is being rotated, allows a distal end of the electrode tip to be cut by the cutting member, the air blow nozzle comprising:

• a nozzle body configured to be connected to an air supply source at one end thereof and including an air discharge portion at another end thereof, the air discharge portion capable of discharging compressed air supplied from the air supply source;
• a support body configured to be secured to an outer surface of the housing case and to support the nozzle body so that the nozzle body is slidable in a horizontal direction;
• wherein the air discharge portion is configured to be movable to a position that does not correspond to the communication hole as the nozzle body is slid to one side;
• and
• wherein the nozzle body includes a positioning portion for positioning the air discharge portion in a predetermined position near the rotary holder as the nozzle body is slid to another side.