Positioning mechanism and cast iron pan polishing equipment

The utility model relates to the related technical field of positioning mechanisms, in particular to a positioning mechanism and cast iron pan polishing equipment, the positioning mechanism comprises a secondary transmission lead screw and a positioning assembly, the secondary transmission lead screw is fixedly installed on the surface of a polishing platform through a fixing base, and the positioning assembly is fixedly installed on a tertiary connecting rod through a fixing rod; each positioning assembly is formed by combining a fixed outer wall, a first-stage positioning rod, a first-stage guide plate, a second-stage guide plate, a spring, a positioning contact round head, a second-stage positioning rod, a first-stage through hole and a second-stage through hole, the positioning assemblies are arranged into one set and are installed on the two sides of a conveying belt on the polishing platform correspondingly, and due to the elastic effect of the springs, the positioning contact round heads can be fixed.