EP0020926A1 - Procédé pour rétreindre des boîtes métalliques à paroi mince et boîte fabriquée d'après le procédé - Google Patents

Procédé pour rétreindre des boîtes métalliques à paroi mince et boîte fabriquée d'après le procédé Download PDF

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Publication number
EP0020926A1
EP0020926A1 EP80102224A EP80102224A EP0020926A1 EP 0020926 A1 EP0020926 A1 EP 0020926A1 EP 80102224 A EP80102224 A EP 80102224A EP 80102224 A EP80102224 A EP 80102224A EP 0020926 A1 EP0020926 A1 EP 0020926A1
Authority
EP
European Patent Office
Prior art keywords
reduced diameter
container
diameter portion
temporary
open end
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.)
Withdrawn
Application number
EP80102224A
Other languages
German (de)
English (en)
Inventor
Michael Lee Atkinson
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.)
Ball Corp
Original Assignee
Ball Corp
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 Ball Corp filed Critical Ball Corp
Publication of EP0020926A1 publication Critical patent/EP0020926A1/fr
Withdrawn legal-status Critical Current

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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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • B21D51/2638—Necking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/42—Details of metal walls
    • B65D7/48—Local reinforcements, e.g. adjacent closures

Definitions

  • a method for forming at least two reduced diameter portions in an open end of a metal cyclindrical body, said method comprising deflecting inwardly the open end of the body by a first die forming means including a supporting bore with a curvalinear transition portion leading into a necking bore, said supporting bore conforming substantially to the external diameter of the body, said deflecting inwardly causing a reduction in the diameter of the open end on the order of about 3.5 percent to about 3.8 percent of the diametrical reduction, further deflecting inwardly the reduced open end by a second die forming means to further reduce the diameter of the reduced open end, said second die forming means including a second supporting bore with a second curvilinear transition portion leading into a second necking bore, said second curvilinear transition portion having a sloping surface about twice that of the first curvilinear transition portion and redeflecting the previous diameter formed by the first inward deflection by bringing the previous diameter into conformity with the entire

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
EP80102224A 1979-06-25 1980-04-25 Procédé pour rétreindre des boîtes métalliques à paroi mince et boîte fabriquée d'après le procédé Withdrawn EP0020926A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US5157379A 1979-06-25 1979-06-25
US51573 1979-06-25
US12041980A 1980-02-12 1980-02-12
US120419 1998-07-22

Publications (1)

Publication Number Publication Date
EP0020926A1 true EP0020926A1 (fr) 1981-01-07

Family

ID=26729575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102224A Withdrawn EP0020926A1 (fr) 1979-06-25 1980-04-25 Procédé pour rétreindre des boîtes métalliques à paroi mince et boîte fabriquée d'après le procédé

Country Status (2)

Country Link
EP (1) EP0020926A1 (fr)
ES (1) ES492329A0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527412A (en) * 1983-03-28 1985-07-09 Stoffel Technologies, Inc. Method for making a necked container
US4753364A (en) * 1983-03-28 1988-06-28 Stoffel Technologies Inc. Necked container
WO1988005700A1 (fr) * 1987-02-06 1988-08-11 American National Can Company Procede et appareil servant a reduire la section de recipients
EP0349521A2 (fr) * 1988-06-29 1990-01-03 Austria Metall Aktiengesellschaft Dispositif de façonnage d'articles creux
FR2678531A1 (fr) * 1991-07-01 1993-01-08 Ball Corp Procede de mise en forme de boites par retrecissement.
NL1000657C2 (nl) * 1995-06-26 1996-12-31 Hoogovens Staal Bv Matrijs en werkwijze voor het die-necken van een metalen romp.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2218396A1 (de) * 1972-04-15 1973-10-25 Krupp Gmbh Vorrichtung zum einziehen von zylindrischen dosenruempfen mit einer naht laengs einer mantellinie, insbesondere mit einer geloeteten falznaht, im rotationsverfahren
US3786957A (en) * 1971-03-22 1974-01-22 Continental Can Co Double stage necking
GB1356821A (en) * 1970-10-22 1974-06-19 Crown Cork & Seal Co Method of and apparatus for deforming open ends of container bodies
US3898828A (en) * 1973-10-01 1975-08-12 American Can Co Die assembly and method for interior roll-necking-in a tubular member
US3964413A (en) * 1974-07-22 1976-06-22 National Steel Corporation Methods for necking-in sheet metal can bodies
US3995572A (en) * 1974-07-22 1976-12-07 National Steel Corporation Forming small diameter opening for aerosol, screw cap, or crown cap by multistage necking-in of drawn or drawn and ironed container body

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1356821A (en) * 1970-10-22 1974-06-19 Crown Cork & Seal Co Method of and apparatus for deforming open ends of container bodies
US3786957A (en) * 1971-03-22 1974-01-22 Continental Can Co Double stage necking
DE2218396A1 (de) * 1972-04-15 1973-10-25 Krupp Gmbh Vorrichtung zum einziehen von zylindrischen dosenruempfen mit einer naht laengs einer mantellinie, insbesondere mit einer geloeteten falznaht, im rotationsverfahren
US3898828A (en) * 1973-10-01 1975-08-12 American Can Co Die assembly and method for interior roll-necking-in a tubular member
US3964413A (en) * 1974-07-22 1976-06-22 National Steel Corporation Methods for necking-in sheet metal can bodies
US3995572A (en) * 1974-07-22 1976-12-07 National Steel Corporation Forming small diameter opening for aerosol, screw cap, or crown cap by multistage necking-in of drawn or drawn and ironed container body

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527412A (en) * 1983-03-28 1985-07-09 Stoffel Technologies, Inc. Method for making a necked container
US4753364A (en) * 1983-03-28 1988-06-28 Stoffel Technologies Inc. Necked container
WO1988005700A1 (fr) * 1987-02-06 1988-08-11 American National Can Company Procede et appareil servant a reduire la section de recipients
EP0349521A2 (fr) * 1988-06-29 1990-01-03 Austria Metall Aktiengesellschaft Dispositif de façonnage d'articles creux
EP0349521A3 (fr) * 1988-06-29 1991-05-08 Austria Metall Aktiengesellschaft Dispositif de façonnage d'articles creux
FR2678531A1 (fr) * 1991-07-01 1993-01-08 Ball Corp Procede de mise en forme de boites par retrecissement.
NL1000657C2 (nl) * 1995-06-26 1996-12-31 Hoogovens Staal Bv Matrijs en werkwijze voor het die-necken van een metalen romp.
EP0750953A1 (fr) * 1995-06-26 1997-01-02 Hoogovens Staal B.V. Matrice et procédé pour rétrécir une boîte métallique
US5711178A (en) * 1995-06-26 1998-01-27 Hoogovens Staal Bv Die for use in die-necking of a metal can body and method using such a die

Also Published As

Publication number Publication date
ES8104020A1 (es) 1981-04-16
ES492329A0 (es) 1981-04-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19810512

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19820702

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ATKINSON, MICHAEL LEE