Pipe blank perforating device

The utility model relates to the technical field of pipe blank punching, and provides a pipe blank punching device which comprises a first sliding seat, a second sliding seat, a fixing column, a fixing plate, an upper clamp, an electric hydraulic device fixedly connected to the upper end of the first sliding seat, and a lower clamp fixedly connected to the upper end of the electric hydraulic device. A sliding groove allowing the lower clamp to slide is formed in the upper clamp, the electric hydraulic device is started to jack the lower clamp, the lower clamp can slide in the upper clamp, and therefore a solid pipe blank to be drilled can be clamped and fixed through the lower clamp and the upper clamp; a transmission assembly is arranged between the upper supporting seat and the supporting base, and when the motor drives the first lead screw to rotate, the first lead screw and the second lead screw can rotate synchronously under the action of the transmission assembly, so that the first sliding seat and the