Method and apparatus for forming container end panels

Details Method and apparatus for forming container end panels Method and apparatus for forming container end panels

1986-07-28

1988-01-05

Spruill, Robert L.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72354, 72379, 413 8, 413 56, B21D 2200

Patent

active

047167556

ABSTRACT:
A method of forming a container end piece includes blanking a work piece from a sheet of material and forming an inverted cup therefrom by wiping the peripheral edge of the blank over a die core ring. The inverted cup is then reversed by advancing a punch core and a punch core ring simultaneously to form a cup having a flange area, a central body area and a chuckwall area interconnecting the flange and the bottom. The punch core ring is then advanced ahead of the punch core to shorten the chuckwall area and reduce the radius between the chuckwall and the central bottom portion. The method also includes engaging the flange area of the reversed cup by a pressure sleeve which moves downwardly with the punch core ring during the final forming of the chuckwall. The apparatus includes a press having a fixed base and movable platen wherein a punch shell is carried by the movable platen and a punch core ring is carried by the fixed base so that upon movement of the punch shell toward the fixed base, the peripheral edge of the blank is wiped over the die core ring to form the inverted cup. The punch core and punch core ring are also carried by the movable platen, with the punch core being air loaded so that the relationship between the punch core and punch core ring can be maintained during a portion of the travel, namely throughout the inversion of the reversed cup but so that the punch core ring can be advanced beyond the punch core to shorten the chuckwall area of the cup and tighten the radius of the chuckwall.

REFERENCES:
patent: 3537291 (1967-10-01), Hawkins
patent: 3957005 (1976-05-01), Heffner
patent: 4031837 (1977-06-01), Jordan
patent: 4054228 (1977-10-01), Balocca et al.
patent: 4093102 (1978-06-01), Kraska
patent: 4109599 (1978-08-01), Bulso, Jr. et al.
patent: 4516420 (1985-05-01), Bulso, Jr. et al.
patent: 4549424 (1985-10-01), Bulso, Jr. et al.
patent: 4567746 (1986-02-01), Bachmann et al.
patent: 4571978 (1986-02-01), Taube et al.
patent: 4587826 (1986-05-01), Bulso, Jr. et al.
patent: 4641761 (1987-02-01), Smith et al.

Affiliated with

Also associated with

Rating

Method and apparatus for forming container end panels does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for forming container end panels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for forming container end panels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1896