Polarizer transportation positioning rod device

The utility model discloses a polaroid transportation positioning rod device, which relates to the technical field of polaroid transportation, and comprises a limiting assembly and an alarm assembly, the limiting assembly comprises a guide rail, a sliding block, a first spring, a supporting block, a fixed block and a positioning rod, the sliding block and the supporting block are slidably connected with the guide rail, the sliding block is fixedly connected with one end of the first spring, and the other end of the first spring is fixedly connected with the alarm assembly. The other end of the first spring is fixedly connected with a supporting block which is fixedly connected with a fixing block, and the positioning rod is rotationally connected with the fixing block. When the polaroid deviates slightly, the position of the polaroid can be calibrated through the elastic force of the first spring, the polaroid extrudes the positioning rod, the positioning rod exerts pressure on the sliding block through the f