Inverted arch middle-buried water-stop belt mounting device

The utility model discloses an inverted arch middle-buried water-stop belt mounting device which comprises a portable formwork body, a fixing block is arranged at the top of a connecting plate, a first groove is formed in the outer wall of the fixing block, a movable column is connected into the first groove in a sliding mode, a second groove is formed in the movable column, and a rotating rod is arranged in the second groove. A rotating plate is arranged at one end of a rotating rod, a first extrusion block is arranged on the outer wall of the rotating plate, a first sliding groove is formed in the outer wall of the first extrusion block, a sliding rod is arranged on the outer wall of a first sliding block, a second extrusion block is arranged on the outer wall of the sliding rod, a strip-shaped groove is formed in the outer wall of the second extrusion block, and a clamping rod is arranged in the strip-shaped groove. According to the device, when the middle-buried type water stop belt is installed on the ou