Air tightness detection device for metal bellows

The utility model relates to the technical field of metal corrugated pipes, in particular to a metal corrugated pipe air tightness detection device, which comprises a base, a first check block is movably arranged on the base, a second check block is fixedly arranged on the base, the first check block moves along the length direction of the base, and the second check block moves along the length direction of the base. A clamping detection mechanism is fixed to the first check block and the second check block, the clamping detection mechanism comprises a mechanism base, a mechanism base spring, a first movable block, a second movable block, a mechanism button and a mechanism side face spring, the metal corrugated pipe can stop at any time under the thrust of the first check block, and the metal corrugated pipe can be detected by observing the lifting condition of the mechanism button. According to the metal corrugated pipe detection device, starting and stopping of thrust of the first stop block on the metal co