Packaging decoration bag film blowing device

The utility model discloses a packaging decoration bag film blowing device, which belongs to the technical field of film blowing devices and comprises a guide-in frame, a second guide roller is rotatably connected to the inner side of the guide-in frame close to the top end, a movable through groove is formed in the inner side face of the guide-in frame, a sliding block is slidably connected in the movable through groove, and a second guide roller is rotatably connected to the guide-in frame. A first guiding roller is rotationally connected between the sliding blocks, an adjusting mechanism is arranged at the bottom end of the inner side of the moving through groove, a supporting frame is fixedly connected to one side face of the guiding-in frame, a pair of symmetrical conveying rollers are rotationally connected to the inner side of the supporting frame through a rotating shaft, and a conveying belt is connected between the conveying rollers. The adjusting mechanism is arranged, the height of the sliding blo