Steel plate straightening machine

The utility model discloses a steel plate straightening machine, which relates to the technical field of straightening machines, and comprises a rack, a plurality of lower straightening rollers are rotatably arranged on the rack at equal intervals, a sliding seat is arranged on the rack right above the lower straightening rollers in a lifting manner, a plurality of upper straightening rollers arerotatably arranged on the sliding seat at equal intervals, and the upper straightening rollers and the lower straightening rollers are arranged in a staggered manner. An arc-shaped concave table is fixedly arranged at the feeding end of the machine frame, a cross beam is arranged over the arc-shaped concave table in a lifting mode, swing arms are arranged at the two ends of the cross beam in a swing mode respectively, and pre-pressing rollers are rotatably arranged at the ends, close to the arc-shaped concave table, of the two swing arms at the same time. According to the utility model, the steel plate to be processed