Pull ring mounting device

The utility model discloses a pull ring installation device which comprises a supporting piece, a plurality of movable pieces are arranged on the supporting piece, grooves for pull rings with openings to be embedded are formed in the movable pieces, and when the movable pieces move to enable the distance between the movable pieces to be increased, the pull rings are pulled open. The movable blocks are provided with limiting rings for limiting the distance between the movable blocks to be increased, a feeding device is arranged above the movable part and comprises a storage barrel used for containing the pull rings, the storage barrel corresponds to the groove in position, and a gap is reserved between the storage barrel and the movable part; the feeding device further comprises a material blocking plate capable of stretching out and drawing back in a gap reserved between the material storage barrel and the movable part, and the material blocking plate presses the previous pull ring into the groove and meanwhi