Switching system of stamping die

The utility model relates to a switching system of a stamping die. The switching system comprises a plurality of pneumatic punches, a plurality of pneumatic control valves, a plurality of shuttle valves and a plurality of switching buttons. The pneumatic punch comprises a cylinder, and a punch is arranged at the output end of the cylinder; an air outlet formed in the pneumatic control valve is respectively communicated with an air inlet end and an air outlet end of the air cylinder; an air inlet formed in the pneumatic control valve is communicated with an air source; the air source is communicated with the plurality of switching buttons to form a plurality of control air paths; and the plurality of control air paths are respectively connected with a switching input end a or a switching output end b of the pneumatic control valve through a plurality of three-way valves and shuttle valves. The switching button is connected with the pneumatic control valve through the shuttle valve, so that the corresponding pn