Printing head transmission device of digital printing machine

The utility model discloses a printing head transmission device of a digital printing machine, which comprises a transmission rotating wheel, a transmission crawler belt is arranged outside the transmission rotating wheel, a second motor is mounted on one side of the transmission rotating wheel, a connecting plate is fixedly connected outside the transmission crawler belt, a mounting plate is mounted at one end of the connecting plate, and a second motor is mounted at the other end of the mounting plate. Two groups of mounting plates are arranged, an adjusting screw rod is movably connected between the mounting plates, a limiting rod is fixedly connected between the mounting plates, a driving sleeve is arranged outside the adjusting screw rod, and a fixing plate is fixedly connected to the bottom end of the driving sleeve. According to the printing head transmission device of the digital printing machine, in the process that the first motor drives the connecting rod to rotate, the connecting rod can drive the