Labeling machine for labeling foam box

The utility model discloses a labeling machine for labeling a foam box, a clamping mechanism comprises a rotating motor, the side surface of the rotating motor is movably connected with an output shaft, the two ends of the side surface of the output shaft are fixedly connected with output gears, the outer edges of the output gears are in transmission connection with transmission gears, and the transmission gears are in transmission connection with the output gears. The outer edge, away from the output gear, of the transmission gear is in transmission connection with a rotating gear, the gears are meshed with one another, and a half-threaded rod is fixedly connected into the rotating gear. By arranging the half-threaded rod, the threaded sleeve, the clamping plate and the synchronous belt, the position of the foam box can be controlled, the half-threaded rod rotates through rotation of the synchronous belt, the threaded sleeve is driven to move when the half-threaded rod rotates, the clamping plate is driven t