In-line control during draw-redraw of one-piece sheet metal can

Details In-line control during draw-redraw of one-piece sheet metal can In-line control during draw-redraw of one-piece sheet metal can

1985-08-23

1986-04-29

Gilden, Leon

Metal deforming

With cleaning, descaling, or lubrication of work or product

Lubricating

72349, 72405, B21D 2200

Patent

active

045848599

ABSTRACT:
Continuous in-line control of work product is provided in draw-redraw processing of flat-rolled sheet metal, coil coated on both its surfaces with organic coating, to finished one-piece can bodies. Drawing of a sheet metal blank is controlled to present flange metal at the open end of the cup-shaped work product which is disposed with its closed end wall in the sheet metal line. The drawn work product is pneumatically controlled to separate the sheet metal line from the can line eliminating random accumulation of work product. Redrawing operations are carried out closed end up to present flange metal which stabilizes in-line movement of work product. Electrostatic lubrication to protect organic coating and facilitate forming is carried out prior to each redrawing operation; in-line movement of work product is controlled during such lubrication. Final redrawing and countersinking of an end wall profile are carried out at a single station with timing control of separate functions while avoiding time delay and damage to can body sheet metal due to such end wall countersinking.

REFERENCES:
patent: 3845539 (1934-11-01), Yamagishi
patent: 3908429 (1975-09-01), Gram
patent: 3945231 (1976-05-01), Imazu
patent: 4223544 (1980-09-01), Main
patent: 4364255 (1982-12-01), Byrd
patent: 4454743 (1984-06-01), Bulso
patent: 4503213 (1985-03-01), Phalen
patent: 4503702 (1985-03-01), Bulso

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