External application plaster sealing and trimming device

The utility model discloses an external application plaster sealing and trimming device, which belongs to the technical field of external application plaster packaging and comprises a sealing cylinder, a through hole is arranged at the upper end of the sealing cylinder, an elastic air blocking sheet is hermetically arranged at the lower end of the through hole of the sealing cylinder, and sliding seats are symmetrically and fixedly connected to the side ends of the sealing cylinder. A guide column is slidably mounted in the sliding seat, a tension spring is fixedly connected between the sliding seat and the guide column, a fixing seat is fixedly connected to the lower end of the guide column, the sliding seat drives the sealing barrel, the frame-shaped blade and the elastic telescopic seat to move downwards, the elastic telescopic seat is utilized to preferentially extrude the external application plaster, and the packaging skin is pressed and attached to the external application plaster. The elastic air bloc