Positioning sheet easy to install

The utility model relates to the technical field of positioning pieces, in particular to an easy-to-install positioning piece which comprises a positioning piece body, the positioning piece body is arranged on the surface of an electrode blank matched with the positioning piece body, positioning through holes are formed in the surface of the positioning piece body, and fixing devices are arranged at the four corners of the top end of the positioning piece body. The fixing device comprises fixing blocks, fixing columns, fixing seats and torsion springs, the fixing seats are arranged at the four corners of the top end of the positioning piece body, positioning holes are formed in the positions, corresponding to the fixing seats, of the surface of the positioning piece body, fixing grooves are formed in the positions, corresponding to the positioning holes, of the bottom ends of the fixing seats, and the fixing columns are rotationally arranged at the bottoms of the fixing grooves. And the bottom end of the fixi