Holding air cylinder based on movable lifting material table

The utility model discloses an enclasping air cylinder based on a movable lifting material platform, which comprises a base, an adjusting frame, a rotating mechanism and an enclasping air cylinder assembly, the adjusting frame is arranged in the base, and the two sides of the adjusting frame are respectively connected with the base in a sliding mode through lifting guide rail assemblies. The lifting air cylinder is installed at the bottom of the base, the output end of the lifting air cylinder is fixedly connected with the adjusting frame, the enclasping air cylinder assembly is installed at the upper end of the rotating mechanism, and the rotating mechanism is fixedly connected with the adjusting frame; the enclasping air cylinder assembly comprises an enclasping air cylinder, a sliding rail frame, a sliding table and a clamping plate. A workpiece is clamped through the clamping plate, when the clamping plate needs to be replaced, the threaded sleeve is rotated and pulled down, then the clamping plate is lif