Steel plate centering device and method

The invention belongs to the technical field of steel plate machining, and provides a steel plate centering device and method.The steel plate centering device comprises a conveying mechanism used for conveying a steel plate in the length direction, and a conveying channel is formed in the conveying mechanism; the lifting assembly is arranged on the conveying mechanism and used for lifting the steel plate to be separated from the conveying channel or falling the steel plate to return to the conveying channel; and the alignment assemblies are oppositely arranged on the two sides of the conveying channel in the width direction, each alignment assembly comprises at least one alignment unit, each alignment unit comprises a fixed end and a movable end, the fixed ends are used for determining the centering positions of the steel plates, and the movable ends are used for adjusting the positions of the steel plates so that the steel plates can be centered. The technical problems that the steel plate centering efficien