Hardware fitting punching device

The hardware fitting punching device comprises a supporting shell, a punching assembly and a machining platform, the top of the machining platform is connected with a fixing assembly, the fixing assembly comprises a mounting plate, a first sliding seat and a second sliding seat, a sliding rail is arranged at the top of the mounting plate, and the first sliding seat and the second sliding seat are arranged on the supporting shell. The two ends of the mounting plate are connected with a supporting seat and a fixing seat respectively, the supporting seat and the fixing seat are connected with a screw, one end of the screw is provided with a rotating hand wheel, the middle of the first sliding seat and the middle of the second sliding seat are provided with a first nut and a second nut respectively, and the first sliding seat and the second sliding seat are connected with a first clamping block and a second clamping block respectively. A rotating hand wheel is arranged on one side of the first sliding seat, the r