Perforating device for automobile safety air bag

The utility model discloses an automobile safety air bag trepanning device which comprises a workbench, a power box is fixedly connected to the outer wall of the middle of the bottom of the workbench, sliding grooves are formed in the two sides of the power box, clamping fixing plates are connected to the inner walls of the sliding grooves in a sliding mode, and protective pads are arranged on the outer walls of the opposite sides of the clamping fixing plates. An electromagnet is arranged in the power box, telescopic columns are slidably connected to the two sides of the power box, one side of each telescopic column is fixedly connected to the outer wall of one side of the clamping fixing plate, a magnetic plate is arranged on the other side of each telescopic column, a connecting spring is arranged between the electromagnet and the magnetic plate, and magnetic force generated by the electromagnet and the magnetic plate attract each other. By arranging the power box, the electromagnet, the connecting spring,