Method and apparatus for producing can bodies of a non-circular

Details Method and apparatus for producing can bodies of a non-circular Method and apparatus for producing can bodies of a non-circular

1988-10-19

1990-08-07

Shaw, Clifford C.

Electric heating

Metal heating

Of cylinders

413 73, B23K 1100

Patent

active

049470140

ABSTRACT:
In order to produce can bodies having a noncircular cross-section, preferably a rectangular cross-section with rounded corners, flat planar blanks are initially deformed in a deforming station by a plurality of similar bending tools, each for producing one respective bend, whereby a respective different bend is made at the same time at the various blanks of the stepwise timed advancing blanks. The bending tool includes a shaping member held stationary at the inside and having a curved outer surface end, furthermore, a roller supported in a supporting body and which is subjected to the action of a spring pressing against the supporting body in order to bend the blank located between the shaping member and pressing roller upwardly during movement by a lifting rod pivotably mounted at the supporting body. This proceeds simultaneously in all bending tools provided for one respective bend by a movable part of the deforming apparatus operating as a press. The blank is moved stepwise from one to the next bending station, such that after a plurality of operating steps a can body having a rectangular cross-section and rounded corners is formed of which the free edges are interconnected in a next following welding station by electrical resistance welding.

REFERENCES:
patent: Re26658 (1969-09-01), McCoy
patent: 828723 (1906-08-01), Dugan
patent: 4693658 (1987-09-01), Glerum et al.

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