In-furnace tension control device for precise stainless steel vertical annealing furnace

The utility model discloses an in-furnace tension control device for a precise stainless steel vertical annealing furnace, which comprises an annealing furnace main body, an exhaust pipe, an air inlet pipe, a base, a sealing cover, a fixing bolt, a handle, an electric heating plate, a placing frame, an elastic telescopic rod, an inductor, a controller, a cavity, an electric conduction sheet and a spring, a base is installed on the annealing furnace main body, a sealing cover is connected to the annealing furnace main body, a fixing bolt is installed on the sealing cover, a handle is installed on the sealing cover, an electric heating plate is arranged in the annealing furnace main body, a placing frame is arranged in the annealing furnace main body, and an elastic telescopic rod is connected to the placing frame. A steel plate is placed in the strip-shaped groove in the placing frame in the annealing furnace, the steel plate is fixed through the elastic telescopic rod, and meanwhile the moving range of the st