(19)
(11) EP 1 036 607 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.01.2003 Bulletin 2003/02

(43) Date of publication A2:
20.09.2000 Bulletin 2000/38

(21) Application number: 99113803.3

(22) Date of filing: 14.07.1999
(51) International Patent Classification (IPC)7: B21D 22/30, B21D 22/24
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 09.03.1999 US 263550

(71) Applicant: Redicon Corporation
Canton, Ohio 44708-1467 (US)

(72) Inventors:
  • Bulso, Joseph D. Jr.
    , (US)
  • Gang, Terry L. Jr.
    , (US)
  • Calderone, Gregory A.
    , (US)
  • Stewart, Harry D.
    , (US)
  • Simmons, William J.
    , (US)

(74) Representative: Bockhorni, Josef, Dipl.-Ing. 
Patentanwälte Herrmann-Trentepohl Grosse - Bockhorni & Partner, Forstenrieder Allee 59
81476 München
81476 München (DE)

   


(54) Method and apparatus for forming a bottom-profiled cup


(57) An apparatus and method for forming a cup (10) having a profiled bottom generally includes a draw die (20) disposed at a first level of a double acting press. The draw die (20) cooperates with a draw pad (22) and a cut edge (24) to form and hold a blank (28) formed from a sheet of material (M). A punch assembly (30) is configured to travel through the draw die (20), thereby drawing the blank (28) over the draw die (20) into a cup (60). The punch assembly (30) transports the cup (60) to a second level of the press where it bottoms out on a die core (50) and a ring pad (51). One element of the punch assembly (30) continues to move beyond the second level of the press, thereby drawing a portion of the cup (60) over the die core (50) and profiling the bottom of the cup (60). The profiled cup (10) is then returned to the second level of the press where it is removed from the punch assembly (30) and transferred. The bottom profile insures that the cup will retain its shape during the transfer operation.






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