Anti-backlash clamping mechanism for sliding guide rail

The utility model belongs to the technical field of clamps, and discloses a sliding guide rail anti-backlash clamping mechanism which comprises a clamping body, the clamping body comprises a clamping block and a pressing block, the clamping block is installed on the inner wall of the pressing block in a sealed and sliding mode, and the clamping block comprises a baffle, a first block body and a first guide pipe. The lower end of the baffle is fixedly connected to the upper end of the first block body, the upper end of the first guide pipe is fixedly connected to the lower end of the first block body, the pressing block comprises a blocking frame, a guide rod, a first piston and a second block body, and the lower end of the blocking frame is fixedly connected to the upper end of the second block body; the lower end of the guide rod is fixedly installed on the inner wall of the second block body in a threaded mode, the guide rod is installed on the inner wall of the first block body in a sliding mode, and the l