Dew-point instrument for hollow glass detection

The utility model discloses a dew-point instrument for hollow glass detection, which comprises a plate body, a movable plate is arranged above the plate body, and the movable plate is controlled by a driving assembly to move; a first sliding groove is horizontally formed in the upper surface of the plate body, a first threaded rod with the left side and the right side opposite in thread direction is horizontally and rotationally installed in the first sliding groove, the first threaded rod is symmetrically sleeved with first sliding blocks in a threaded mode, and an installation plate is fixedly installed on the upper surfaces of the first sliding blocks. And an L-shaped positioning plate is fixedly mounted on the upper surface of the mounting plate. The device can quickly control the two positioning plates to transversely fix the glass by rotating the first threaded rod according to the length of the glass to be detected, is convenient and quick, and improves the working efficiency of glass detection. 本实用新型公