Printer with printing rollers convenient to replace

The utility model relates to the technical field of printing equipment, and discloses a printing machine with a printing roller convenient to replace, which comprises a machine body, a first fixing table and a second fixing table are fixedly connected to the top of the machine body, a placing groove is formed in the first fixing table, and a through hole is formed in the right side of the placinggroove. A motor is fixedly connected to the inner wall of the left side of the containing groove, a clamping block is fixedly connected to the output end of the motor, the clamping block is connectedto the left end of a rotating roller in a clamped mode, a printing roller is arranged on the outer side of the rotating roller, and a sliding groove is formed in the second fixing table. According tothe printing machine with the printing roller convenient to replace, through cooperation between the ejector block and the concave block, the fixing roller is clamped into or disengaged from the fixing hole, so that the connect