Fine denier high-elasticity polyester fiber compression sealing device

The utility model relates to the technical field of polyester fibers, and discloses a fine-denier high-elasticity polyester fiber compression sealing device which comprises a shell, a U-shaped plate is fixedly connected to the upper end of the shell, two symmetrically-arranged fixing plates are fixedly connected to the lower end of the U-shaped plate, a threaded rod is rotationally connected between the two fixing plates through a ball bearing, and the threaded rod is fixedly connected with the shell. One end of the threaded rod penetrates through the side wall of the fixing plate to be fixedly connected with a rotating motor, external threads of the rod walls of the two ends of the threaded rod are opposite, sliding bases are connected to the outer portions of the rod walls of the two ends of the threaded rod in a threaded meshing mode, and connecting rods are rotationally connected to the lower ends of the two sliding bases through rotating shafts; and the lower ends of the two connecting rods are rotationa