Automatic screw bit switching device

The invention discloses an automatic screw bit switching device and relates to the field of non-standard automatic equipment. The key point of the technical scheme is as follows: the automatic screw bit switching device comprises an electric screw bit tool which drives a screw bit to rotate and a screw bit tool magazine with a plurality of screw bits for replacing the electric screw bit tool. A chuck is arranged on the electric screw bit tool, the chuck is embedded into the chuck, the screw bit in the chuck is locked or released by means of a limiting mechanism, and in a docking process of theelectric screw bit tool and the screw bit tool magazine, the screw bit is locked or released by cooperating a docking mechanism and the limiting mechanism. The plurality of screw bits can be placed on the electric screw bit tool and are replaced automatically according to types of screws on a product without being adjusted manually. The screw bits are switched automatically, and the efficiency ofsettling and replacing th