Curling die apparatus

Details Curling die apparatus Curling die apparatus

1977-05-06

1978-05-09

Gilden, Leon

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflectors arranged to bend work longitudinally of...

72379, 72133, B21D 514

Patent

active

040879984

ABSTRACT:
A curling die apparatus adapted for use in a press and having a die member with a semi-cylindrical cavity adapted to be mounted on one press member and a sheet engaging means on the other press member for advancing a sheet of material edgewise along a path tangent to the inlet edge of the semi-cylindrical die cavity to progressively deflect the sheet material into a curl. The curling die apparatus includes a movable sheet guide member normally positioned to engage one side of the sheet adjacent the inlet edge of the die cavity to guide the sheet while the lead edge of the sheet moves progressively in a curl along the semi-cylindrical cavity and the guide member is automatically moved to a position away from the die cavity as the lead edge of the sheet exits from the semi-cylindrical die cavity to allow the lead edge of the sheet to continue to curl through at least a major portion of the cylinder. In those applications where it is desired to form a curl on both edges of a sheet of material, a clamp is provided for gripping the curl on one edge of the sheet to prevent deformation of the curl on one edge of the sheet during forming of the curl on the other edge.

REFERENCES:
patent: 708015 (1902-09-01), Blakey
patent: 2245407 (1941-06-01), Lignian
patent: 2413594 (1946-12-01), White
patent: 2555708 (1951-06-01), Scully

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