EP0975449B1 - Behälterdeckel herstellung - Google Patents

Behälterdeckel herstellung Download PDF

Info

Publication number
EP0975449B1
EP0975449B1 EP98917346A EP98917346A EP0975449B1 EP 0975449 B1 EP0975449 B1 EP 0975449B1 EP 98917346 A EP98917346 A EP 98917346A EP 98917346 A EP98917346 A EP 98917346A EP 0975449 B1 EP0975449 B1 EP 0975449B1
Authority
EP
European Patent Office
Prior art keywords
centre panel
seaming flange
shell
moving
forming
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 - Lifetime
Application number
EP98917346A
Other languages
English (en)
French (fr)
Other versions
EP0975449A1 (de
Inventor
David Andrew Roberts
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.)
Crown Packaging Technology Inc
Original Assignee
Crown Cork and Seal Technologies 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 Crown Cork and Seal Technologies Corp filed Critical Crown Cork and Seal Technologies Corp
Publication of EP0975449A1 publication Critical patent/EP0975449A1/de
Application granted granted Critical
Publication of EP0975449B1 publication Critical patent/EP0975449B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • This invention relates to a metod for manufacturing can ends, and particularly to ends for cans filled with food or non-carbonated beverages.
  • the can is provided with at least one deformable wall element, generally in the top or bottom end of the can, which is deformed after filling and seaming to reduce the internal volume of the can and thus to increase the internal pressure.
  • the present invention seeks to provide a manufacturing process for deformable can ends of this type, which is both efficient and reliable.
  • Claim 2 concerns a method of manufacturing a package comprising the steps of:
  • deformable can ends can be manufactured on equipment similar to that used for the manufacture of conventional beverage can ends, or even by modifying existing equipment.
  • the additional reforming of the centre panel can be carried out directly after the can end leaves the conversion station, rather than requiring the can ends to be transported to a separate reforming machine.
  • the step of reforming the can ends comprises the steps of:
  • the reforming step preferably includes moving the punch upwardly with respect to the clamping ring.
  • FIG.1 a process for the manufacture of can ends is shown in schematic form.
  • a coil 1 of prelacquered and lubricated aluminium alloy is fed to a shell press 2 which stamps out blanks and forms them into a shell shown generally at 3.
  • the end shell 2 is then fed on a carrier belt to a curler 4 which curls over the edges of the shell to form a seaming flange shown at 5.
  • the curled shells 4 are then fed into a liner 6 where they are inverted, spun and compound is injected onto the underside of the seaming flange as shown at 7.
  • a lining machine is given in GB 2042373.
  • the lined end shells are then fed on the carrier belt to a conversion press, shown generally at 8.
  • a rivet 17 is raised on the centre panel 9 of the shell, and a score is applied to the centre panel to define a portion operable to produce an opening therein.
  • More aluminium end stock 10 is used to produce a tab 18 which is staked to the end shell via the rivet on the centre panel.
  • the resulting can end is shown generally at 11.
  • the can ends 11 are then fed on the carrier belt to a reshaping station 12 where the centre panel 9 is pushed upwardly to form the completed can end shown at 13.
  • Fig.2A shows the can end 11 (shown minus its tab 18 for the sake of clarity) at the reshaping station 12.
  • the centre panel 9 of the can end is pushed upwardly by a punch 14, the seaming flange 5 of the end being supported by a seaming panel support ring 15 and curl support ring 16 respectively.
  • the punch 14 is retracted, and the can end exits the reshaping station 12 on the carrier belt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Glass Compositions (AREA)
  • Spark Plugs (AREA)
  • Closures For Containers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Claims (5)

  1. Verfahren zur Herstellung eines Dosendeckels (11) bestehend aus den folgenden Schritten:
    i) Herstellung eines Deckelrohlings (2) mit einem radial äußeren Verschließkopfflansch, einer an den Verschließkopfflansch anschließenden Deckelkernwand, einem Mittelfeld und einem sich axial nach unten erstreckenden Deckelkern, über welchen das Mittelfeld mit der Deckelkernwand in Verbindung steht;
    ii) Umformung des Rohlings (2) zu einem Aufreißdeckel mittels der folgenden Schritte:
    a) Herstellung einer Kerbe auf einem Abschnitt des Mittelfeldes,
    b) Anbringung eines Nietes (17) auf dem Mittelfeld,
    c) Herstellung einer Lasche (18) und Anbringung der Lasche an dem Niet (17) und anschließend
    iii) Nachverformung des Rohlings, indem das Mittelfeld und der Verschließkopfflansch relativ zueinander bewegt werden, und zwar dahingehend, dass das Mittelfeld oberhalb des Niveaus des Verschließkopfflansches angehoben wird.
  2. Verfahren zur Herstellung einer Verpackung bestehend aus den folgenden Schritten:
    i) Herstellung eines Dosendeckels (11) gemäß dem Verfahren nach Anspruch 1;
    ii) Befestigung des Deckels an einem Dosenkörper, der mit einem Produkt gefüllt worden ist und
    iii) Ausführung eines zweiten Nachverformungsschrittes an dem Dosendeckei (11), wobei das Mittelfeld und der Verschließkopfflansch relativ zueinander bewegt werden, und zwar dahingehend, dass das Mittelfeld bis auf eine Höhe unterhalb des Niveaus des Verschließkopfflansches abgesenkt wird, um den Kopfabschnitt innerhalb der Verpackung zu vermindern.
  3. Verfahren zur Herstellung eines Dosendeckels (11') gemäß Anspruch 1, welches ferner durch die folgenden Schritte gekennzeichnet ist:
    i) Aufbringen des geformten Deckelrohlings (2) auf ein Förderband im Anschluss an die Formgebung des Deckelrohlings;
    ii) Bewegen des Förderbandes, zwecks Überführung des Deckelrohlings (2) zu einer Umformstation (8), in der der Rohling in einen Aufreißdeckel umgeformt wird und
    iii) Bewegen des Förderbandes um den umgeformten Deckel (11) einer Nachformstation (12) zuzuführen, in welcher der Deckel mit der Maßgabe nachverformt wird, dass das Mittelfeld und der Verschließkopfflansch relativ zueinander bewegt werden, um das Mittelfeld oberhalb des Niveaus des Verschließkopfflansches anzuheben.
  4. Verfahren nach einem der vorangegangenen Ansprüche, wobei der Schritt des Nachverformens des Deckels (11) die folgenden Schritte umfasst:
    i) Einspannen des radial äußeren Verschließkopfflansches des Deckels (11) mittels eines Klemmringes und
    ii) Bewegen des Klemmringes und eines Stempels relativ zueinander mit der Maßgabe, dass das Mittelfeld aufwärts bis in eine Position oberhalb des Niveaus des Verschließkopfflansches bewegt wird.
  5. Verfahren nach Anspruch 4, wobei der Nachverformschritt ein Bewegen des Stempels in Aufwärtsrichtung relativ zu dem Klemmring umfasst.
EP98917346A 1997-04-16 1998-04-14 Behälterdeckel herstellung Expired - Lifetime EP0975449B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9707678 1997-04-16
GBGB9707678.0A GB9707678D0 (en) 1997-04-16 1997-04-16 Container end manufacture
PCT/GB1998/001072 WO1998046383A1 (en) 1997-04-16 1998-04-14 Container end manufacture

Publications (2)

Publication Number Publication Date
EP0975449A1 EP0975449A1 (de) 2000-02-02
EP0975449B1 true EP0975449B1 (de) 2002-02-27

Family

ID=10810864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98917346A Expired - Lifetime EP0975449B1 (de) 1997-04-16 1998-04-14 Behälterdeckel herstellung

Country Status (7)

Country Link
EP (1) EP0975449B1 (de)
JP (1) JP4119488B2 (de)
AT (1) ATE213675T1 (de)
AU (1) AU7059198A (de)
DE (1) DE69803980D1 (de)
GB (1) GB9707678D0 (de)
WO (1) WO1998046383A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726883U (ja) * 1993-09-20 1995-05-19 裕 藤田 展示用屏風
US6666933B2 (en) 1997-04-16 2003-12-23 Crown Cork & Seal Technologies Corporation Can end, and method of manufacture therefor
GB0010256D0 (en) 2000-04-28 2000-06-14 Crown Cork & Seal Tech Corp Can end
EP1678055B1 (de) * 2003-10-29 2008-03-12 Crown Packaging Technology Inc Dosenende

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1599563A (de) * 1968-12-30 1970-07-15 Carnaud & Forges
US4836398A (en) * 1988-01-29 1989-06-06 Aluminum Company Of America Inwardly reformable endwall for a container
US4967538A (en) * 1988-01-29 1990-11-06 Aluminum Company Of America Inwardly reformable endwall for a container and a method of packaging a product in the container
GB9118283D0 (en) * 1991-08-24 1991-10-09 Cmb Foodcan Plc Containers

Also Published As

Publication number Publication date
WO1998046383A1 (en) 1998-10-22
ATE213675T1 (de) 2002-03-15
AU7059198A (en) 1998-11-11
JP2001519720A (ja) 2001-10-23
GB9707678D0 (en) 1997-06-04
JP4119488B2 (ja) 2008-07-16
DE69803980D1 (de) 2002-04-04
EP0975449A1 (de) 2000-02-02

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