Metal deforming – By deflecting successively-presented portions of work during... – By tension applied to work or product
Patent
1977-09-26
1979-06-19
Mehr, Milton S.
Metal deforming
By deflecting successively-presented portions of work during...
By tension applied to work or product
72164, 72131, 226143, B21D 302
Patent
active
041583019
ABSTRACT:
A method and apparatus for removing the coil set from a coiled roll of sheet metal material or the like, and which comprises a pair of cooperating rolls defining a nip through which the sheet metal is advanced, and a deflecting roll positioned immediately downstream of the nip to flex the advancing sheet material beyond its yield point and remove the coil set therefrom. Upon stopping of the advance to permit the cutting or other processing of the sheet material, the deflecting roll is automatically withdrawn from contact with the sheet material to thereby prevent the formation of a crease in the material, and upon restarting of the advance, the sheet material is initially reversely advanced a short distance to insure that any portion of the sheet material which has not been flexed to remove the coil set will be positioned upstream of the nip before the forward advance is commenced.
REFERENCES:
patent: 2343899 (1944-03-01), Groll et al.
patent: 3054315 (1962-09-01), Sarka
patent: 3124290 (1964-03-01), Lloyd
patent: 3187530 (1965-06-01), Ranney
patent: 3820367 (1974-06-01), Kline
patent: 4047416 (1977-09-01), Johnson
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