CA1250488A - Shell for can - Google Patents

Shell for can

Info

Publication number
CA1250488A
CA1250488A CA000471597A CA471597A CA1250488A CA 1250488 A CA1250488 A CA 1250488A CA 000471597 A CA000471597 A CA 000471597A CA 471597 A CA471597 A CA 471597A CA 1250488 A CA1250488 A CA 1250488A
Authority
CA
Canada
Prior art keywords
panel
chuck wall
wall
shell
tools
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000471597A
Other languages
French (fr)
Other versions
CA1267854C (en
Inventor
Henry C Bachmann
Omar L Brown
Ermal C Fraze
James R Gregg
David K Wynn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dayton Reliable Tool and Manufacturing Co
Original Assignee
Dayton Reliable Tool and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dayton Reliable Tool and Manufacturing Co filed Critical Dayton Reliable Tool and Manufacturing Co
Priority to CA000585586A priority Critical patent/CA1267854A/en
Publication of CA1250488A publication Critical patent/CA1250488A/en
Application granted granted Critical
Publication of CA1267854C publication Critical patent/CA1267854C/xx
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

The disclosure relates to a novel shell such as used in the manufacture of can ends, and to a method and tools for making such a shell. A non-circular blank having rounded corners is cut from thin metal. The blank is oblong in a direction transverse to the grain of the metal. A first set of tools separates the blanks and forms a substantially flat central panel and an upward-extending chuck wall about the edge of the panel to produce a partially formed shell. The junction area between said panel and said chuck wall has a relatively large radius of curvature at this time. A second set of tools forms in the blank a lip extending outward from the upper end of the chuck wall and generally parallel to said panel; then the panel and the chuck wall are separately gripped, followed by relative movement between the panel and the chuck wall while wrapping the junction area around a forming punch to form a panel wall in said junction area extending upward from the inner part of said chuck wall. Then the lip is formed into a curl edge section which ends in an inner curl diameter that is round and concentric with the chuck wall, and has progressively lesser radii of curvature from upper end of the chuck wall to the inner curl diameter. The resulting shell is characterised by a curl diameter being round and concentric with the chuck wall and essentially uniformly spaced therefrom, and by having an essentially constant thickness throughout the central panel, the panel wall and chuck wall and the curved section therebetween.
CA000471597A 1984-01-16 1985-01-07 Shell for can Expired CA1250488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000585586A CA1267854A (en) 1984-01-16 1988-12-09 Shell for can

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57124384A 1984-01-16 1984-01-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA000585586A Division CA1267854A (en) 1984-01-16 1988-12-09 Shell for can

Publications (2)

Publication Number Publication Date
CA1250488A true CA1250488A (en) 1989-02-28
CA1267854C CA1267854C (en) 1990-04-17

Family

ID=24282900

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000471597A Expired CA1250488A (en) 1984-01-16 1985-01-07 Shell for can

Country Status (9)

Country Link
EP (2) EP0151298B1 (en)
JP (4) JPH0615091B2 (en)
AU (2) AU573675B2 (en)
CA (1) CA1250488A (en)
DE (2) DE3478000D1 (en)
HK (2) HK62991A (en)
NZ (1) NZ210588A (en)
SG (1) SG58391G (en)
ZA (1) ZA85146B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ210588A (en) * 1984-01-16 1988-01-08 Dayton Reliable Tool & Mfg Co Shell used in manufacture of can ends: non-circular blank having rounded corners is cut from sheet metal
US4571978A (en) * 1984-02-14 1986-02-25 Metal Box P.L.C. Method of and apparatus for forming a reinforced can end
FR2570969B1 (en) * 1984-10-03 1989-01-20 Gallay Sa PROCESS FOR SHUTTERING WITH CRIMPING AND SHRINKING OF AN END OF A RUBBER BY A CRIMPED BOTTOM AND CRIMPING MANDREL SUITABLE FOR ITS IMPLEMENTATION.
US4715208A (en) * 1986-10-30 1987-12-29 Redicon Corporation Method and apparatus for forming end panels for containers
US4713958A (en) * 1986-10-30 1987-12-22 Redicon Corporation Method and apparatus for forming container end panels
JPH01213148A (en) * 1988-02-18 1989-08-25 Toyo Seikan Kaisha Ltd Integrally-formed pressure-resistant can and its manufacture
JPH07112580B2 (en) * 1989-01-23 1995-12-06 株式会社北海製作所 Conical end plate forming method for pressure vessel
DE3916665A1 (en) * 1989-05-23 1990-11-29 Haar Maschbau Alfons DEVICE FOR PRODUCING COVERS OR SIMILAR ITEMS FROM METAL SHEET
JPH082472B2 (en) * 1991-01-16 1996-01-17 東洋製罐株式会社 Curl molding method for can lid
JP2546221B2 (en) * 1995-08-08 1996-10-23 井関農機株式会社 Walking type seedling planter with fertilizer application
SE508716C2 (en) * 1996-01-15 1998-11-02 Tetra Laval Holdings & Finance The bottom of a package with internal overpressure
GB9711290D0 (en) * 1997-06-03 1997-07-30 Metal Box Plc Easy open ends
US6079249A (en) * 1998-11-02 2000-06-27 Alfons Haar Inc. Methods and apparatus for forming a beaded can end
CN104607540B (en) * 2014-12-29 2017-04-19 义乌市易开盖实业公司 Can cap multi-level composite air pressure reverse mold and forming method
CN112222271B (en) * 2020-09-24 2023-03-24 中国航发贵州黎阳航空动力有限公司 Hot stretch forming method of shunt shell

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537291A (en) * 1967-10-04 1970-11-03 Reynolds Metals Co Apparatus for and method of forming an end closure for a can
US3957005A (en) * 1974-06-03 1976-05-18 Aluminum Company Of America Method for making a metal can end
GB1574226A (en) * 1976-06-14 1980-09-03 Styner & Bienz Ag Method of producing a cover for a tin having a weakening scoring for tearing it open apparatus for carrying out this method and a cover produced in accordance with such method
US4217843A (en) * 1977-07-29 1980-08-19 National Can Corporation Method and apparatus for forming ends
US4448322A (en) * 1978-12-08 1984-05-15 National Can Corporation Metal container end
US4372720A (en) * 1980-09-04 1983-02-08 American Can Company Forming of end closures
JPS5846369A (en) * 1981-09-14 1983-03-17 Minolta Camera Co Ltd Cleaning roller of fixing roller for electrophotographic copier
EP0103074A3 (en) * 1982-09-09 1984-05-23 Ball Corporation Increased strenght for metal closures through reversing curved segments
NZ210588A (en) * 1984-01-16 1988-01-08 Dayton Reliable Tool & Mfg Co Shell used in manufacture of can ends: non-circular blank having rounded corners is cut from sheet metal

Also Published As

Publication number Publication date
JPH0771709B2 (en) 1995-08-02
JPS60170544A (en) 1985-09-04
HK62991A (en) 1991-08-23
EP0292982B1 (en) 1991-06-26
DE3484750D1 (en) 1991-08-01
JPH0615091B2 (en) 1994-03-02
EP0151298A3 (en) 1985-12-04
JPH0647471A (en) 1994-02-22
NZ210588A (en) 1988-01-08
SG58391G (en) 1991-08-23
JPH0671366A (en) 1994-03-15
AU590473B2 (en) 1989-11-02
HK9392A (en) 1992-01-31
AU1262288A (en) 1988-06-02
EP0292982A1 (en) 1988-11-30
ZA85146B (en) 1985-08-28
AU3751085A (en) 1985-07-25
DE3478000D1 (en) 1989-06-08
CA1267854C (en) 1990-04-17
AU573675B2 (en) 1988-06-16
EP0151298A2 (en) 1985-08-14
JPH0679376A (en) 1994-03-22
JPH0773766B2 (en) 1995-08-09
EP0151298B1 (en) 1989-05-03

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Legal Events

Date Code Title Description
MKEX Expiry