Automatic bag opening machine

The utility model belongs to the technical field of automatic mechanical equipment, and discloses an automatic bag opening machine which comprises a first rodless air cylinder and a feeding conveying belt, a first telescopic cylinder is installed at the output end of the first rodless air cylinder, the output end of the first telescopic cylinder is connected with a push plate, the output end of the feeding conveying belt is connected with a rolling shaft table, and the rolling shaft table is connected with a lifting device. A cutting area is arranged in the middle of the rolling shaft table, a material receiving hopper is installed on the lower side of the rolling shaft table, a supporting plate is installed on the material receiving hopper, a second telescopic cylinder is installed on the supporting plate, a cutting knife is connected to the output end of the second telescopic cylinder, an auxiliary hopper is installed on the lower side of the material receiving hopper, and a supporting plate is installed on