Magnetic damping tension fine adjustment device

The utility model relates to a magnetic damping tension fine adjustment device, which is characterized in that a winding tape is placed between tape reels, is fixed by a paper pressing disc, and passes through a tension sensor after being involved; a damping disc is placed under the paper reels and is fixed by a connecting piece; a rotating bearing is mounted on a self-rotating body; the damping disc, the tape reels and the paper pressing disc are mounted on the self-rotating body in sequence; an electromagnetic coil and the self-rotating body are directly fixed on a revolution body through a magnetic fixed disc; the revolution body is mounted on a main shaft; a controller is connected with a sliding ring on the main shaft through a lead wire; a carbon brush is mounted at the end part of the sliding ring; the sliding ring is mounted on the main shaft; and the main shaft is connected with a direct current motor through a synchronous pulley. The utility model has the advantages of stable work, convenient operation and strong safety and reliability, can directly and automatically adjust the tension and tension angles without shutting down, and also can improve the production efficiency.