Spin-necker flanger for beverage containers

Details Spin-necker flanger for beverage containers Spin-necker flanger for beverage containers

1980-09-04

1982-07-27

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With cutting of work or product

72 91, 72105, B21D 1912

Patent

active

043411037

ABSTRACT:
A method and apparatus for beading canbodies, or like hollow members having at least one terminal end edge, a first annular end portion adjacent said terminal end edge, a second annular end portion adjacent said first annular end portion and a third annular end portion adjacent said second annular end portion. An inner forming means is placed within the canbody, said inner forming means having an annular inner forming surface in juxtaposition to said first annular end portion, an arcuate concave inner forming surface extending from said annular inner forming surface and in juxtaposition to said second annular end portion and a cylindrical inner support surface extending axially inward from said arcuate concave inner forming surface and in juxtaposition to said third annular end portion. An outer forming means is placed around the canbody, said outer forming means having an annular outer forming surface compatibly shaped and in radial alignment with said arcuate concave inner forming surface. Preferably the first annular end portion of the hollow member is first outwardly deformed to an increased diameter by progressively, over a sector of the circumference of the member, engaging and deforming the first annular end portion outwardly a predetermined distance by radial movement of the inner forming means, while supportively engaging, over a major portion of the sector being so deformed, the second annular end portion by opposing radial movement of the outer forming means.

REFERENCES:
patent: 1950154 (1934-03-01), Rosenberg et al.
patent: 3688538 (1972-09-01), Hoyne
patent: 3754424 (1973-08-01), Costanzo
patent: 3782314 (1974-01-01), Franek et al.
patent: 3782315 (1974-01-01), Passenheim
patent: 3874209 (1975-04-01), Maiorino

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