Packaging bag automatic bagging machine and method

The invention relates to a packaging bag automatic bagging machine and method. The packaging bag automatic bagging machine comprises a bagging machine body, wherein a rack and a bagging device are arranged in the bagging machine body. A first conveying device, a second conveying device and a feeding device are arranged on the rack. The feeding device is arranged above the second conveying device. The bagging device comprises a first fixing rod connected with the rack at the lower end of the first conveying device and a second fixing rod connected with the rack at the lower end of the feeding device. A first fixing ring and a bottom plate are sequentially arranged on the first fixing rod from top down. The first fixing ring and the bottom plate are connected with the first fixing rod through a sliding device. A sealing device, a second fixing ring and a stretcher are sequentially arranged on the second fixing rod from top down. The sealing device, the second fixing ring and the stretcher are connected with the second fixing rod through a sliding device. The stretcher is arranged between the first fixing ring and the second fixing ring. The packaging bag automatic bagging machine is a woven bag automatic turning device which is simple in structure, convenient to use and low in cost.