System for forming and trimming of tubular articles
AssigneeAmerican Can Company
InventorsJoseph P. Zugcic, Kevin Whiting
Life of this patent
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Abstract
The instant invention relates to a system for the forming and trimming of tubular articles, such as aluminum and steel cans. The irregular edge at the open end of the can is trimmed by internally and externally positioned knives with respect to the can, with the internally positioned knife having a diameter less than 0.0015 inch shorter than the inside diameter of the can.
Claims10
A system for the forming and trimming of a metal tubular article having an open end and a bottom end comprising, means for forming a tubular article comprising die means, punch means having a diameter operatively associated with said die means for urging metal through said die means to form said tubular article, means for operatively supporting said tubular article, means associated with said supporting means for holding said tubular article on said supporting means, means connected to said supporting means for rotating said supporting means and thereby said tubular article, first knife means having a diameter and operatively connected with said supporting means for trimming said open end of said tubular article when said tubular article is operatively supported by said supporting means, second knife means associated with said first knife means and positioned to cooperate with said first knife means for said trimming, said diameter of said first knife means ranging from equal to that of the diameter of said punch means to less than 0.0015 inch shorter than said diameter of said punch means, and including means for transporting said tubular article from said die means to said supporting means.
Dependencies are inferred from the claim text.