Metal deforming – With cutting – By composite tool
Patent
1998-11-02
2000-06-27
Larson, Lowell A.
Metal deforming
With cutting
By composite tool
72348, B21D 5144
Patent
active
060792493
ABSTRACT:
A can end is formed from sheet material in a single acting press by blanking a workpiece and holding the workpiece between a blanking punch and a draw pad. The periphery of the workpiece is worked between a knockout and a crown ring to contour a crown. A bead punch advances into the workpiece to form a shell extending from the crown. The bead punch bottoms out on a bead die and collapses to a predetermined position to form a plurality of beads adjacent the shell by flowing a portion of the shell to form the beads while shortening the shell to less than specifications for the can end. The bead punch returns to an uncollapsed position during upstroke of the press to extend the shell to be within specifications. Apparatus for forming a can end in a press includes a fluidly supported die crown ring having an upper surface defining a can end crown contour. A knockout is aligned with the die crown ring for engaging a workpiece upon downstroke of the press to form a crown in the periphery of the workpiece. A punch, mounted to collapse against fluid pressure, forms a shell extending from the crown and presses the workpiece against a bead die to form a plurality of beads adjacent the shell. The punch collapses so that a portion of the shell flows to form the beads and returns to an uncollapsed position during upstroke to extend the shell to meet specifications.
REFERENCES:
patent: 4571978 (1986-02-01), Taube et al.
patent: 4587825 (1986-05-01), Bulso, Jr. et al.
patent: 4808052 (1989-02-01), Bulso, Jr. et al.
patent: 4862722 (1989-09-01), Fraze et al.
patent: 4903521 (1990-02-01), Bulso, Jr. et al.
patent: 4977772 (1990-12-01), Bulso, Jr. et al.
patent: 5024077 (1991-06-01), Bulso, Jr. et al.
patent: 5042284 (1991-08-01), Stodd et al.
patent: 5062287 (1991-11-01), Brown et al.
patent: 5309749 (1994-05-01), Stodd
patent: 5331836 (1994-07-01), Cudzik
patent: 5381683 (1995-01-01), Cowling
patent: 5442947 (1995-08-01), Stodd
patent: 5502995 (1996-04-01), Stodd
patent: 5823040 (1998-10-01), Stodd
The Canmaker, Nov. 1990.
Hoying Carl W.
Turner Stephen B.
Alfons Haar Inc.
Larson Lowell A.
LandOfFree
Methods and apparatus for forming a beaded can end does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for forming a beaded can end, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for forming a beaded can end will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1774206