Metal deforming – By deflecting successively-presented portions of work during... – To form spiral coil
Patent
1980-03-17
1981-12-22
Larson, Lowell A.
Metal deforming
By deflecting successively-presented portions of work during...
To form spiral coil
242 781, B21B 4708
Patent
active
043064388
ABSTRACT:
There is provided an apparatus and method for selectively coiling a hot steel transfer bar or allowing the bar to pass uncoiled through the apparatus. A frame supports a number of rollers which can transfer a bar in one direction, and conventional bend roller means are located above the rollers, adapted to apply a down curvature to a transfer bar. Pivotal ramp means upstream of the bend roller means can either direct a transfer bar through the bend roller means, or allow the transfer bar to pass along the rollers under the bend roller means. A sub-frame downstream of the bend roller means carries at least one roller, and is mounted for movement between a raised position and a lowered position. In the raised position, the roller on the sub-frame defines, with a further roller upstream thereof and with a coil-guide roller located under the bend roller means, a cradle in which the initial convolutions of a coiling transfer bar can be contained. Initially, the sub-frame is in its uppermost position, to receive the initial small convolutions of a coiling transfer bar. As the transfer bar continues to coil and becomes heavier and larger in diameter, a point is reached where the sub-frame can be lowered, thus allowing a greater coil radius to be accommodated in the cradle.
REFERENCES:
patent: 1977214 (1934-10-01), Steckel
patent: 2150934 (1939-03-01), Millan et al.
patent: 2628790 (1953-02-01), Schmidt et al.
patent: 3062470 (1962-11-01), O'Brien et al.
patent: 4096724 (1978-06-01), Eshelman et al.
Child Roland H.
Jones Colin R.
Larson Lowell A.
The Steel Company of Canada Limited
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