| 摘要 |
An apparatus for unwinding a wire material under constant tension comprises a braking face (3) rotating together with a reel wound with a wire material, a brake band (4) contacting with the braking face (3), a brake control mechanism connected to an end of the brake band (4) for controlling a tension of the brake band (4) to control a braking force, and a deformation control device (5) for restricting deformation in at least a part of the brake band (4).
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