Accurate positioning mobile printer

The utility model relates to the technical field of printers, in particular to a mobile printer capable of accurately positioning. According to the technical scheme, the printer comprises a printer body and a moving track, a mounting base is fixed to the bottom of the printer body, a track plate is slidably connected to the moving track, the upper end of the track plate and the mounting base are fixed through bolts, and a mainframe box is mounted at the end of the moving track; the lead screw penetrates through the track plate and is in threaded connection with the track plate, a pair of track grooves are formed in the two sides of the bottom of the track plate, positioning holes are formed in the tops of the track grooves, a plurality of sets of positioning columns are movably connected to the positions, corresponding to the positioning holes, of the movable track, and an opening and closing assembly is arranged at the position, connected with the lead screw, of the track plate. The positioning columns exten