Left-right position adjusting equipment for printing plate before coating

The utility model relates to a device for adjusting the left-right position of a printing plate before coating. The device comprises a movable base, a limiting groove, a winding roller bearing, a winding roller, a horizontal adjusting lead screw, a motor and an upper computer. The two ends of the winding roller are installed between the two supporting seats through winding roller bearings. The base is transversely positioned in the limiting groove, so that the base can move left and right in the limiting groove; a horizontal screw hole is formed in the base in the axial direction, the horizontal adjusting lead screw is in threaded connection with the horizontal screw hole, and the horizontal adjusting lead screw is connected with an output shaft of a motor. The device further comprises a pair of opposite-penetrating infrared sensors installed on the left side and the right side in front of the coating machine. The infrared sensor is used for detecting the left-right offset of the printing plate, the infrared