The utility model discloses an automatic positioning UV flatbed printer which comprises a base, the top of the base is fixedly connected with a
processing table, the front end face of the base is provided with an operation panel, and one side of the top of the
processing table is provided with a first driving
assembly; a first driving
assembly is arranged on the base, a second driving
assembly is arranged on the first driving assembly, a printing assembly is arranged on the second driving assembly, a positioning assembly is arranged on the
machining table, and a fixing assembly is arranged in the center of the base. The printing plate can be quickly positioned in the transverse direction and the longitudinal direction through the two sets of positioning plates, after the two sets of positioning plates are attached to the side wall of the printing plate, the
infrared sensors can detect the distance between the
infrared sensors and the positioning plates, and then when the numerical values between the two transverse
infrared sensors and the numerical values between the two longitudinal infrared sensors are the same, the printing plate can be quickly positioned. And if yes, the printing plate is located at the center position, and rapid automatic positioning can be completed.