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A method of forming a container in one or more double acting presses includes the steps of blanking, drawing an inverted cup and reverse drawing the inverted cup while retaining a flange thereon at a first station and then transferring the cup to a second station where the cup is drawn to an inverte

A method of forming a container in one or more double acting presses includes the steps of blanking, drawing an inverted cup and reverse drawing the inverted cup while retaining a flange thereon at a first station and then transferring the cup to a second station where the cup is drawn to an inverted configuration and then reverse drawn to form a finished container again retaining the flange throughout. The drawing operations at each station are performed in a single stroke of the press. The apparatus at the first station includes a blank and draw punch and a fixed, hollow die core ring with the punch telescoping over the ring to form the inverted cup and a draw horn telescoping within the ring to reverse draw the cup. The apparatus at the second station includes a hollow redraw sleeve and a pressure sleeve telescoping over the redraw sleeve to invert the cup and a profile punch telescoping within the redraw sleeve to reverse draw the cup.

대표청구항 ▼

A method of forming a container in one or more double acting presses, comprising the steps of: (A) at a first station, in a single stroke (1) forming a blank of material; (2) drawing an inverted flanged cup from said blank; (3) reverse drawing said inverted cup to form a flanged cup; and (4) removin

A method of forming a container in one or more double acting presses, comprising the steps of: (A) at a first station, in a single stroke (1) forming a blank of material; (2) drawing an inverted flanged cup from said blank; (3) reverse drawing said inverted cup to form a flanged cup; and (4) removing said flanged cup to a second station; and (B) at said second station, in a single stroke (1) drawing said flanged cup into a second inverted cup; (2) reverse redrawing said second inverted cup into a flanged container; and (3) profiling the bottom of said flanged container at the bottom of the stroke. Apparatus for forming flanged containers in one or more double acting presses from a sheet of material, comprising: (A) at a first station (1) a blank and draw punch; (2) a fixed hollow die core ring; (3) said blank and draw punch being movable toward said die core ring to form an inverted cup from the material over the top of said die core ring; (4) a draw horn movable toward said die core ring to reverse draw said inverted cup within said die core ring to form a flanged cup; (B) at a second station (1) a hollow redraw sleeve; (2) a first pressure sleeve movable toward said redraw sleeve to invert said flanged cup over the top of said redraw sleeve; (3) a profile punch movable toward said redraw sleeve to reverse draw said inverted cup within said redraw sleeve.