The utility model discloses an
air tightness test bench, which relates to the technical field of
air tightness test and comprises a
machine body. A support is installed on one side of the upper end of the
machine body, a telescopic rod is installed at the upper end of the support, an inflation
pressure detection head is installed at the bottom end of the telescopic rod, a rotary table is rotatably installed at the upper end of the
machine body, and a rotating mechanism is installed at the bottom end in the rotary table and installed in the machine body. And a placing table is mounted on the upper side of the rotary table. In the rotating process of the rotary table, a workpiece is moved to the position below the inflation
pressure detection head, the telescopic rod can drive the inflation
pressure detection head to move downwards to be in
butt joint with the upper end of a material, inflation is conducted after
butt joint, inflation is stopped after inflation is conducted for a period of time, and then inflation is completed. The pressure
detector on the inflation pressure detection head can detect the
internal pressure change, feeding and discharging can be carried out while detection is carried out, the feeding and discharging time is shortened, and the detection efficiency is improved.