Carton printing ink concentration adjusting device

The invention discloses a carton printing ink concentration adjusting device, comprising a mixed ink cartridge, wherein a support plate is fixedly arranged on the outer wall of the mixed ink cartridge, a passive pinion is movably engaged with the lower part of an active middle gear, a stirring rod is fixedly disposed on the center of the side, close to the mixed ink cartridge, of the passive pinion ; a piston chamber is disposed in the inner cavity of a diluent adding box, a pushing plate is movably disposed in the piston chamber, the end, away from the pushing plate, of the pushing rod is fixed on a nut seat, a threaded ring layer is fixedly disposed on the outer ring of the end, away from the diluent adding box, of a screw rod, the threaded ring layer is screwed into a threaded hole formed in a passive big gear, and the passive big gear and the active middle gear are movablyengaged. The carton printing ink concentration adjusting device can automatically add the diluent and stir at aconstant speed, and time