Perforating device for large packaging bags of instant noodles

The utility model discloses a punching device for a large packaging bag of instant noodles, which belongs to the field of punching and comprises a conveying support, an upper conveying roller arranged on the conveying support, a support beam arranged below the upper conveying roller, a support frame arranged above the support beam, a punching driving motor arranged on the support frame, a driving synchronous pulley arranged on the punching driving motor, and a driving synchronous pulley arranged on the driving synchronous pulley. A belt wheel rotating shaft is further arranged on the supporting frame, a driven synchronous belt wheel is arranged on the belt wheel rotating shaft, and the punching driving motor drives the belt wheel rotating shaft to rotate through the driving synchronous belt wheel, the driven synchronous belt wheel and the synchronous belt; a rotating punch is further arranged on the belt wheel rotating shaft, the belt wheel rotating shaft can drive the rotating punch to rotate, and a pluralit