Steel plate blank feeding positioning device based on visual control and positioning method thereof

The invention relates to a steel plate blank feeding positioning device based on visual control and a positioning method thereof, relates to the technical field of steel bar positioning, and solves the problems that in the prior art, ultra-short or ultra-long steel bars cannot be positioned, limitation is very large, and normal steel charging cannot be met. The centering mark is arranged in the middle of the steel plate blank in the length direction; the feeding assembly is used for conveying a steel plate blank so that the vertical center line of the centering mark in the overlook state and the vertical center line of the walking beam furnace in the overlook state can be located on the same straight line. The visual detection positioning assembly is used for detecting whether the vertical center line of the centering mark in the overlook state and the vertical center line of the walking beam furnace in the overlook state are located on the same straight line or not. The feeding assembly and the visual detect