Material ring selective positioning device for semiconductor film sticking machine

The utility model discloses a material ring selective positioning device for a semiconductor film sticking machine, which is characterized in that a film sticking working surface is provided with a first positioning ring and a second positioning ring which are not equal in outer diameter and are concentrically arranged with a working limiting disc, and each positioning ring at least comprises a first positioning hole and a second positioning hole which are positioned, installed and matched with the material ring and are arranged at intervals; a first plug-in mounting positioning driving assembly corresponding to the first positioning hole and the second positioning hole and in selective plug-in mounting positioning fit with the first positioning ring is arranged below the first positioningring; a second plug-in mounting positioning driving assembly corresponding to the first positioning hole and the second positioning hole and in selective plug-in mounting positioning fit with the first positioning hole and t