Automatic plate punching device

An automatic plate punching device comprises a feeding mechanism used for conveying T floor feeding, provided with a feeding conveying assembly, interconnected with a controller and receiving a start-stop instruction, an induction detection mechanism used for detecting the T floor and sending detection data to the controller, and a length measuring wheel capable of receiving the instruction of the controller to measure the length of the T floor and feeding the length data back to the controller. And the punching mechanism is interconnected with the controller, receives the start-stop instruction, is arranged on one side of the travel path of the T floor, is provided with a punching head, a pushing assembly and a fixing part, is positioned on the travel path of the T floor and is used for punching and limiting the T floor, and the punching part can be used for punching the T floor positioned on the fixing part. The punching device has the beneficial effects that scribing and punching operations caused by walki