Single action press for manufacturing shells for can ends

Details Single action press for manufacturing shells for can ends Single action press for manufacturing shells for can ends

2007-12-11

2007-12-11

Banks, Derris H. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

C072S347000

Reexamination Certificate

active

10890918

ABSTRACT:
A single action press for forming a shell used to make a can end includes a first tool and an opposed second tool. The first tool includes a die center insert that performs a forming operation on disc cut from a sheet of end material. The first tool is configured and arranged wherein force is supplied to the die center insert during the downstroke and force is removed from the die center insert at the bottom of the downstroke and at the start of the upstroke, to thereby enable the die center insert to disengage from the shell. One specific embodiment uses a die center piston and compressed air to apply force to the die center insert. Another embodiment uses a cam and cam follower arrangement to remove axial forces at the bottom of the downstroke and either springs or gas pressure to apply force to the die center insert during the downstroke. Actuators are provided in the first tool to reestablished downward forces on the die center insert by the time the top of the upstroke so that the press cycle can be repeated.

REFERENCES:
patent: 3886881 (1975-06-01), Pearce et al.
patent: 4516420 (1985-05-01), Bulso, Jr. et al.
patent: 4568230 (1986-02-01), Brown
patent: 4587825 (1986-05-01), Bulso, Jr. et al.
patent: 4587826 (1986-05-01), Bulso et al.
patent: 4640116 (1987-02-01), Brown
patent: 4713958 (1987-12-01), Bulso, Jr. et al.
patent: 4715208 (1987-12-01), Bulso, Jr. et al.
patent: 4716755 (1988-01-01), Bulso, Jr. et al.
patent: 4723882 (1988-02-01), Wissman et al.
patent: 4808052 (1989-02-01), Bulso, Jr. et al.
patent: 4955223 (1990-09-01), Stodd et al.
patent: 4977772 (1990-12-01), Bulso, Jr. et al.
patent: 5272901 (1993-12-01), Cudzik
patent: 5626048 (1997-05-01), McClung
patent: 5628224 (1997-05-01), McClung et al.
patent: 5857374 (1999-01-01), Stodd
patent: 6079249 (2000-06-01), Turner et al.
patent: 6658911 (2003-12-01), McClung
patent: 7036348 (2006-05-01), McClung
patent: 2005/0044921 (2005-03-01), McClung
PCT International Search Report dated Sep. 27, 2005 in PCT/US 2005/023885.
PCT Written Opinion in PCT/US 2005/023885.

Affiliated with

Also associated with

Rating

Single action press for manufacturing shells for can ends does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single action press for manufacturing shells for can ends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single action press for manufacturing shells for can ends will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3833333