Packaging bag opening device and packaging bag barreling equipment

The invention provides a packaging bag barrel sleeving device and packaging bag barrel sleeving equipment. The packaging bag barrel sleeving device comprises a rack, a first bag opening assembly, a second bag opening assembly and a bag opening assembly. A packaging bag is placed on the rack, a bag opening of the packaging bag can be opened through the first bag opening assembly and the second bag opening assembly, then the rotating rod is driven to rotate by starting the bag opening rotation driving air cylinder, and the two bag opening swing arms are made to rotate along with the rotating rod and gradually get close to the bag opening of the packaging bag. According to the bag opening device, the bag opening plates of the two bag opening swing arms extend into the bag opening of the opened packaging bag through rotation, then the bag opening opening and closing driving air cylinder is started to enable the bag opening swing arms to rotate in the vertical plane, the bag opening of the packaging bag is further