Method and apparatus for manufacturing a can end
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 27, 2017
Grant Date -
Mar 3, 2016
app pub date -
Apr 10, 2014
filing date -
Apr 12, 2013
priority date (Note) -
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Abstract
There is disclosed herein a method of forming a can end comprising: holding a peripheral portion of a blank between inner (60, 70) and outer (80, 90, 100) peripheral tool sets; drawing a central portion of the blank against an outer center panel tool (80) having a central region and a sloping peripheral edge (84) extending to a peripheral wall (86) by moving the outer center panel tool (80) inwardly relative to the peripheral tool sets to form a drawn can end shell (10); and reforming the can end shell (10) against an inner center panel tool (60) having a central region and a peripheral region by moving the inner center panel tool (60) outwardly relative to the peripheral tool sets to reform the drawn central portion to have a center panel defined by the central region of the inner center panel tool (60) and a recessed reinforcing structure extending around the center panel, wherein the sloping peripheral edge (84) of the outer center panel tool (80) has a convex radius of curvature of 2 mm or more and 30 mm or less between the central region of the outer center panel tool (80) and the peripheral wall (86) of the outer center panel tool (80). A related apparatus is also disclosed.
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