Machining stamping device with excess material recycling function and key mechanism of machining stamping device

The invention discloses a machining stamping device with an excess material recycling function and a key mechanism of the machining stamping device, and belongs to the technical field of machining equipment. The machining stamping device comprises a stamping machine body, a stamping table, a storage plate, a stamping opening and shockproof feet, fixing mechanisms are symmetrically arranged at the top end of the stamping table, the stamping opening is formed in the center of the storage plate, the shockproof feet are fixed to the bottom end of the stamping machine body and the bottom end of the stamping table, and an auxiliary discharging mechanism is fixed to the bottom end of the middle of the stamping table. A material collecting box is slidably arranged in the stamping table at the bottom end of the stamping opening, a cooling mechanism is arranged in the stamping table at the bottom end of the material collecting box, a ventilation screen is fixed to the bottom end of the material collecting box at the bo