Method for producing a rolled edge
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United States of America Patent
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Jul 1, 2008
Grant Date -
Jul 22, 2004
app pub date -
Mar 18, 2002
filing date -
Apr 6, 2001
priority date (Note) -
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status (Latency Note)
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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.
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