| 摘要 |
<p>The present invention relates to a straightening machine which comprises: an upper cover part installed in the upper portion of an upper straightening roll; a lower cover part disposed in the lower part of the upper cover part and installed in the internal part of the lower straightening roll; and a detecting apparatus mounted on the upper cover part and contacted with a material tip part to detect whether the magnitude of upward bending of the material tip part exceeds a reference value when the material tip part to be straightened by the upper straightening roll and the lower straightening roll is bent.</p> |
