Meandering correction apparatus for metal strip and meandering correction method for metal strip

A meandering correction apparatus for correcting meandering of a metal strip conveyed along a threading line,

• characterized in that
• the meandering correction apparatus comprises:
• a first meandering amount detection unit that is disposed at a meandering control target position of the metal strip and detects a first meandering amount of the metal strip;
• a steering roll disposed to correct the first meandering amount;
• a tilting device for the steering roll;
• a second meandering amount detection unit that is disposed on a downstream side of the steering roll along the threading line and on an upstream side of the meandering control target position along the threading line and detects a second meandering amount of the metal strip;
• a first control unit that corrects a shift amount at the meandering control target position based on the first meandering amount by taking into consideration a conveyance time taken from a position of the steering roll to the meandering control target position;
• and
• a second control unit that controls a position of the metal strip in a width direction with the steering roll based on the second meandering amount and the corrected shift amount.