Retractable device for identification label

The utility model discloses a telescopic device for an identification label, which comprises the identification label, the bottom of the identification label is fixedly connected with two telescopic columns, the bottoms of the two telescopic columns are both provided with supporting columns, the top of each supporting column close to one side of the corresponding telescopic column is provided with a sliding groove, and the telescopic columns are in sliding connection with the supporting columns through the sliding grooves. A column groove is formed in the top of the side, away from the telescopic column, of each supporting column, round holes are formed in the inner walls of the left side and the right side of each column groove, a small column is arranged on the inner side of each column groove, cylinders are fixedly connected to the surfaces of the left side and the right side of the side, close to the column groove, of each small column, and the cylinders are movably inserted into the round holes. The smal