Apparatus for manufacturing a metal strip
An apparatus for manufacturing a metal strip ( 1 ) includes a number of rolls ( 2, 3, 4, 5 ) over which the metal strip ( 1 ) is guided in a transporting direction under a strip tension that insures that the strip is flat to a large extent at least between two rolls ( 2, 3 ) and a light source ( 6 ) operable for illuminating an area of the metal strip ( 1 ) as it moves in the transporting direction. Two cameras ( 7, 8 ), which are located in a region of the light source ( 6 ) at a distance from each other, are operable for photographing the area of the metal strip ( 1 ) illuminated by the light source from two different directions.
1 . An apparatus for manufacturing a metal strip ( 1 ), comprising a number of rolls ( 2 , 3 , 4 , 5 ) over which the metal strip ( 1 ) is guided in a transporting direction under a strip tension that insures that the strip is flat to a large extent at least between two rolls ( 2 , 3 ); a light source ( 6 ) operable for illuminating an area of the metal strip ( 1 ) as it moves in the transporting direction; and two cameras ( 7 , 8 ) located in a region of the light source ( 6 ) at a distance from each other and operable for photographing the area of the metal strip ( 1 ) illuminated by the light source from two different directions.
2 . An apparatus according to claim 1 , comprising receiving means ( 9 ) for storing pictures taken by the two cameras ( 7 , 8 ).
3 . An apparatus according to claim 2 , comprising evaluation means ( 10 ) connectable with the receiving means ( 9 ) for receiving the pictures stored in the receiving means ( 9 ) and for evaluating the pictures.