Spraying device for printing machine

The utility model belongs to the field of printing equipment, and particularly relates to a spraying device for a printing machine, which comprises a machine body, a sprayer and an ink box. A nozzle is arranged at the upper end of the machine body, an ink box is arranged at the top end of the machine body, and the bottom end of the ink box is connected with the top end of the nozzle; a protective structure is arranged at the upper end of the machine body and comprises a protective shielding shell, a built-in groove, a supporting rod, a reset spring, a clamping block and an anti-disengaging assembly, the protective shielding shell is arranged outside the spray head in a sleeving mode, and the rear end of the protective shielding shell is inserted into the upper end of the machine body; the two built-in grooves are formed in the left end and the right end of the upper end of the machine body. According to the device, the problem that the device main body is inconvenient to protect and shield the sprayed ink is