Coating device for butyronitrile coated plate production

The utility model discloses a coating device for butyronitrile coating plate production, which comprises a coating machine, a transverse plate is arranged in the coating machine, a movable groove is formed in the transverse plate, outer frame bodies are symmetrically arranged in the movable groove front and back, and centering mechanisms are arranged on the lower surfaces of the two outer frame bodies. And the centering mechanism comprises expansion plates arranged on the lower surface of the outer frame body, the two expansion plates are provided with a first rack and a second rack correspondingly, and a servo motor is arranged on the bottom face in the transverse plate through a support. When an output shaft of a servo motor drives a gear to rotate, through meshing transmission of the gear, a first rack and a second rack, the two outer frame bodies and the two inner frame bodies move in the direction close to a coating plate along the inner wall of a movable groove, guide wheels in the two inner frame bodie