Spin-drying machine

The utility model relates to the technical field of optical lens cleaning, in particular to a spin dryer which comprises a base, a motor, a driving rod and a plurality of spin-drying assemblies, the motor is fixedly connected with the base and located below the base, one end of the driving rod is rotatably connected with the base, and the output end of the motor is fixedly connected with the driving rod. The spin-drying assembly comprises a supporting plate, a groove body, a rotating rod, a first bevel gear, two second bevel gears, two threaded rods and two threaded plates, the supporting plate is fixedly connected with the driving rod, the groove body is arranged above the supporting plate, one end of the rotating rod penetrates through the groove body, and by rotating the rotating rod, the first bevel gear is driven to rotate, and the two second bevel gears are driven to rotate; through rotation of the threaded rods and cooperation with the threaded plates, the two threaded plates are driven to move relativ