Apparatus for the stretch levelling and slitting of metal strip
AssigneeSundwiger Eisenhutte Maschinenfabrik Grah & Co.
InventorsWilli Sporenberg, Karl Lefor
Life of this patent
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Abstract
To obtain flat component strips from a cold-rolled metal strip inexpensively and with the minimum use of technical apparatus, slitting shears 5 are disposed between sets of tensioning drums 3, 4; 11, 12, more particularly between the inlet side set of tensioning drums 3, 4 and a straightening unit 6 of a stretch flattening apparatus for a metal strip 1. This arrangement of the slitting shears eliminates the additional stretch flattening of the component strips otherwise required after the metal strip itself has already been stretch flattened. The component strips between the two sets of tensioning drums 3, 4; 11, 12 also acquire the same length.
Claims8
An apparatus for the stretch flattening and longitudinal slitting of a metal strip into component strips comprising an inlet set of tensioning drums for the metal strip and an outlet set of tensioning drums for the component strips, the drums of said outlet set being common to all of the component strips, said metal strip and component strips being guided over the drums and coupled to the drums such that said sets of tensioning drums apply tension to said strips which exceeds the tensile yield strength of the strips to overstretch and permanently elongate the metal strip and component strips;
- slitting shears disposed between the sets of tensioning drums for slitting the metal strip completely into said component strips while the strips are being permanently overstretched;
- and a recoiler for receiving the component strips from the outlet set of tensioning drums.
An apparatus for the stretch flattening and longitudinal slitting of a metal strip into component strips, the apparatus having an inlet for the metal strip and an outlet for the component strips, the apparatus comprising first tensioning means disposed at said inlet for receiving the metal strip;
- second tensioning means disposed at said outlet for receiving said component strips, said first and second tensioning means being arranged to apply tension to the metal strip and component strips which is greater than the tensile yield strength of the strips to overstretch and permanently elongate said strips therebetween, said second tensioning means comprising an element common to the component strips;
- and slitting means disposed between said first and second tensioning means for slitting the metal strip completely into said component strips while the strips are being permanently overstretched.
Dependencies are inferred from the claim text.