Method for producing a rolled edge

Details Method for producing a rolled edge Method for producing a rolled edge

2002-03-18

2008-07-01

Banks, Derris H. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

C072S348000, C072S370110, C072S379400

Reexamination Certificate

active

07392683

ABSTRACT:
The invention relates to a method for the production of a rolled edge from an edge section (11) of a tube, wherein a flanging die is driven onto the edge section and flanges it into a roll. According to the invention, an initial area (14) of the edge section (11) is previously rolled in a positive fit manner by means of a forcibly controlled tool (30). This prevents buckling of the initial area (14), which has a controlled geometry as a result of rolling. The novel method is preferably used in the production of valve seats in so-called aerosol domes (10) for spray cans.

REFERENCES:
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patent: 3037473 (1962-06-01), Whistler, Sr. et al.
patent: 3726244 (1973-04-01), Arangelovich et al.
patent: 4113133 (1978-09-01), Berthet
patent: 4207761 (1980-06-01), Niemi
patent: 4637961 (1987-01-01), Bachmann et al.
patent: 4667499 (1987-05-01), Bull
patent: 4711611 (1987-12-01), Bachmann et al.
patent: 4862722 (1989-09-01), Fraze et al.
patent: 1452744 (1969-06-01), None
patent: 0297754 (1989-01-01), None
patent: WO02081118 (2002-10-01), None

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