Pattern printing machine

The utility model relates to the technical field of packaging carton production, in particular to a pattern printing machine which comprises a base. A supporting disc is arranged above the base, a rotary disc is rotationally installed on the supporting disc, a power assembly A used for driving the rotary disc to rotate is installed on one side of the rotary disc, a plurality of limiting holes are formed in the rotary disc in an annular array, a discharging hole is formed in the supporting disc, a stacking box with an upward opening is arranged at the bottom end of the discharging hole, and a lifting plate is arranged in the stacking box. An ink groove is formed between every two adjacent limiting holes, the ink grooves are fixedly arranged on the rotating disc, and ink brush rollers are rotationally installed in the ink grooves. The paperboard is limited through the limiting holes, so that it can be guaranteed that the printing plate and the paperboard needing to be printed are accurately aligned, printed pat