Height test press-in mechanism of centrifugal fan assembling machine

The invention discloses a height test press-in mechanism of a centrifugal fan assembling machine. The height test press-in mechanism comprises a groove plate, an upper mounting block, a lower mountingblock, a piston rod, a first pressure spring, a pressure block, a second pressure spring and laser range finders, wherein the upper mounting block is mounted at the lower end of the groove plate; a light hole is formed in the middle of the upper mounting block; the lower end of the piston rod is a slender rod part, and the upper end of the piston rod is a circular ring part; the slender rod partof the piston rod is matched in the lower mounting block; the upper mounting block is fixedly connected with the lower mounting block; the first pressure spring is arranged at the upper end of the circular ring part of the piston rod; the laser range finders are mounted on the groove plate; and one laser range finder is aligned to the upper end surface of the piston rod, and the other laser rangefinder corresponds to the u