Method of and device for manufacturing bands of steel
OwnerRolf Rottgerinventor
Life of this patent
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Abstract
A device for manufacturing loops of steel employed in continuous-operation presses to manufacture single-layer or multiple-layer webs of material. To equalize the tension in the ends of a strip before they are welded together to form a loop and to increase the strength of the weld, the strip (10) is laid over drums (2 and 3) and its ends secured in grippers (13) that travel across the drums' axes (4 and 5). The strip is tensioned to a prescribed tension. The tension is maintained while the ends (11 and 12) of the strip are secured by transverse tensioning arms. The tension is released by moving the movable axis to an operating distance. The strip is cut with a blade, the ends of the strip are ground parallel, and are welded together to form a loop.
Claims12
A device for manufacturing loops of steel, comprising a base, two separate drums with the same diameter and with parallel axes mounted on said base, the axis of one drum being stationary and the other axis being transversely variable with respect to the one axis, at least one gripper for each end of a strip and a tensioning mechanism for connecting the grippers in order to apply tension to the strip, wherein the grippers have threaded bores therein and wherein the tensioning mechanism comprises a tensioning shaft with a right-handed thread on one end and a left-handed thread on the other end and wherein the ends of the shaft screw into the threaded bores in the grippers.
Dependencies are inferred from the claim text.