Plate-shaped material straightening machine

The invention discloses a plate-shaped material straightening machine, and relates to the technical field of straightening machines. According to the plate-shaped material straightening machine, a plate is put at the upper end of a material supporting plate and pushed towards the upper end of a first cleaning brush, an upper collecting hopper and a second cleaning brush are driven by a telescopic air cylinder to descend to make contact with the plate, and a first motor and a second motor drive the first cleaning brush and the second cleaning brush to rotate correspondingly, so that dust on the upper side and the lower side of the plate is cleaned; after passing through the first cleaning brush and the second cleaning brush, a plate makes contact with the first scraping plate and the second scraping plate, the first scraping plate and the second scraping plate rotate under the action of the elastic force of the spring and are attached to the surface of the plate, stubborn impurities on the surface of the plate