To make remounting easier and a storage space unnecessary, by equipping a hole on a suction groove of a suction port main body and integrating the suction groove and a long nozzle to pass air and axially attaching the long nozzle in front of the suction port main body so as to be stored.

The root part of this long nozzle 2 is formed into a hollow cylinder 4 and a hole 10 for communicating air is equipped in the behind. An axis core 4 is equipped on upper and lower faces of the hollow cylinder 3 to axially attach an axis receiving hole 5 of a cover 6 so as to be rotated against the suction head main body by a pin protruded from the tip end wall face. A curved plate 8 is fixed on the front face of a suction groove 7 and a hole 11 communicated with the suction groove 7 is equipped on the center of the curved plate 8. Thus the long nozzle 2 is communicated with the suction groove 7 and air leak is prevented by the curved plate 8. When the long nozzle 2 is rotated and stored, the outer wall of the hollow cylinder 3 covers the hole 11 of the suction groove 7 to prevent air leak and suction pressure lowering. Thus remounting and storing are made easier.