EP0378733B1 - Verfahren zum Schliessen gefüllter Büchsen - Google Patents

Verfahren zum Schliessen gefüllter Büchsen Download PDF

Info

Publication number
EP0378733B1
EP0378733B1 EP19890101022 EP89101022A EP0378733B1 EP 0378733 B1 EP0378733 B1 EP 0378733B1 EP 19890101022 EP19890101022 EP 19890101022 EP 89101022 A EP89101022 A EP 89101022A EP 0378733 B1 EP0378733 B1 EP 0378733B1
Authority
EP
European Patent Office
Prior art keywords
lid
seaming
roll
rotary axis
chuck
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
EP19890101022
Other languages
English (en)
French (fr)
Other versions
EP0378733A1 (de
Inventor
Yoshiharu C/O Takasago Technical Inst. Taura
Yoshinori Hiroshima Tech. Inst.Mitsubishi Yuzaki
Koichi Nagoya Machinery Works Mitsubishi Takagi
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to DE1989606013 priority Critical patent/DE68906013T2/de
Publication of EP0378733A1 publication Critical patent/EP0378733A1/de
Application granted granted Critical
Publication of EP0378733B1 publication Critical patent/EP0378733B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D51/30—Folding the circumferential seam
    • B21D51/32—Folding the circumferential seam by rolling

Definitions

  • the present invention relates to a method for seaming packed cans, which is available in a can seamer for packed cans in which aluminium cans, iron cans and the like are used for packing beer, coffee, juice or the like.
  • a rotary axis 11 of the roll 1 and the rotary axis 12 of the chuck 2 are parallel to each other, and the roll 1 moves from the outside in the direction perpendicular to the rotary axis 12 so that it may successively press the edge portion 5a of the lid 5.
  • a more specific object of the present invention is to provide a method for seaming packed cans, in which even if a lifter load is made small as compared to the known method in the prior art, a sufficient overlap width of the seaming portion can be held, hence a sealing property at the seaming portion can be insured, and accordingly, even if a can wall thickness is made thin as compared to that in the prior art, buckling of the can would not be generated.
  • the location of the edge portion of the lid coming into contact with the groove of the roll would change from the upper portion of the lid flange to its side portion and then to its lower portion as the lid and the can body rotate, hence wrapping deformation of the edge portion of the lid would proceed smoothly, thereby folding deformation of the edge portion of the can body that is secondarily resulted from the wrapping deformation of the lid edge portion, becomes easy, and therefore, successive seaming work for the can flange can be achieved perfectly even with a smaller lifter load than that applied in the prior art.
  • FIG. 1 shows a first preferred embodiment of the invention.
  • reference numeral 1 designates a roll having a groove 6
  • numeral 2 designates a chuck
  • numeral 3 designates a lifter
  • numeral 4 designates a can body
  • numeral 5 designates a lid
  • numeral 12 designates a rotary axis of a chuck
  • the method illustrated in Fig. 1 is different from the prior art method shown in Fig. 3 in that the groove 6 of the roll 1 is pressed to an edge portion 5a of the lid 5 with an rotary axis 11′ of the roll 1 kept inclined with respect to the rotary axis 12 of the chuck 2.
  • the arrangement of the roll 1 shown in Fig. 1 is such that seaming work is effected by pressing the groove 6 of the roll 1 to the edge portion 5a of the lid 5 with the rotary axis 11′ of the roll 1 kept inclined with respect to the rotary axis 12 of the chuck 2 on a tangential plane of a cylindrical surface having its center axis located on the rotary axis 12. More particularly, starting from the state where the rotary axis 11′ is placed in parallel to the rotary axis 12 with the surface of the roll 1 kept in contact with a cylindrical surface having its center axis aligned with the rotary axis 12, the rotary axis 11′ is inclined leftwards as viewed in Fig. 1 on a tangential plane of the cylindrical surface.
  • the rotational direction of the rotary axis 11′ of the roll 1 is the direction for the roll 1 to depress the lid 5 in the illustrated case, the roll 1 could be rotated in the opposite direction, and in this case the rotational direction is the direction for the roll 1 to push up the lid 5.
  • the can body 4 having the lid 5 placed on its mouth portion and the lid 5 are clamped between the lifter 3 and the chuck 2 as applied with an appropriate lifter load, and when the chuck 2 is rotated about the rotary axis 12 by drive means not shown, the chuck 2, the can body 4 and the lifter 3 rotate integrally in the same direction.
  • the roll 1 successively approaches to the lid 5 while being rotated in the direction of an arrow about the roll rotary axis 11′ by separate drive means not shown, it presses the groove 6 to the edge portion 5a of the lid 5, and thereby the seaming portion of the can body 4 and the lid 5 is subjected to successive working, starting from the state shown in Fig.
  • the seaming method according to the present invention can be practiced even by pressing the groove 6 of the roll 1 to the edge portion 5a of the lid 5 with the rotary axis 11' of the roll 1 inclined in any arbitrary direction with respect to the rotary axis 12 of the chuck 2 in combination with the inclination according to the first preferred embodiment illustrated in Fig. 1 and in most cases this combined method is employed.
  • a possible range of the inclination angle of the rotary axis 11' with respect to the rotary axis 12 in the above-described respective embodiments is 1 - 6° and an appropriate range thereof is 3 - 4°.
  • a diagram in Fig. 9 shows the correlation between a preset load of the lifter 3 taken along an abscissa and a body hook l taken along an ordinate, in the case where the seaming roll 1 is inclined in the direction of a lever being pressed to the can body 4 in a rotary motion type can seamer that is employed in many seaming lines.
  • the rotary axis 11' of the roll 1 is inclined with respect to the rotary axis 12 of the chuck 2 within a tangential plane of a cylindrical surface having its center axis aligned with the rotary axis 12, as shown in Fig. 1.
  • a preset load for the lifter 3 that is necessary for obtaining the same body hook l could be reduced by 5 - 15 kg as compared to the prior art method.
  • the location of the edge portion of the lid coming into contact with the groove of the roll would change from the upper portion of the lid flange to its side portion and then to its lower portion as the lid and the can body rotate, hence wrapping deformation of the edge portion of the lid would proceed smoothly, thereby folding deformation of the edge portion of the can body, becomes easy, and therefore, successive seaming work for the can flange can be achieved perfectly even with a smaller lifter load than that applied in the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Claims (1)

  1. Verfahren zum Schließen gefüllter Büchsen mit den folgenden Schritten:
    Klemmen eines Büchsenkörpers (4) und eines Deckels (5) zwischen eine Hebevorrichtung (3) und ein Spannfutter (2), wobei die Hebevorrichtung (3) mit dem durch Antriebsmittel gedrehten Spannfutter (2) eine gemeinsame Rotationsachse (12) aufweist und mit der gleichen Drehzahl wie das Spannfutter (2) sich selbst antreiben oder angetrieben werden kann,
    Antreiben der gesamten Anordnung zum Drehen, während eine Druckkraft auf diese aufgebracht wird, und
    anschließendes Pressen eines Nutbereichs (6) einer Rolle (1) von außen an einen Kantenbereich des Deckels, um diesen einzurollen und den Kantenbereich zu verformen, wodurch eine Dichtungseigenschaft des verschlossenen Bereichs sichergestellt werden kann,
    dadurch gekennzeichnet,
    daß das Pressen des Nutbereichs (6) der Rolle (1) an den Kantenbereich des Deckels durchgeführt wird, während die Rotationsachse (11') der Rolle (1) gegenüber der Rotationsachse (12) des Spannfutters (2) auf einer Tangentialebene einer Zylinderoberfläche mit auf der Rotationsachse (12) befindlicher Mittelachse geneigt ist.
EP19890101022 1989-01-18 1989-01-20 Verfahren zum Schliessen gefüllter Büchsen Expired - Lifetime EP0378733B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1989606013 DE68906013T2 (de) 1989-01-20 1989-01-20 Verfahren zum schliessen gefuellter buechsen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU28594/89A AU589847B1 (en) 1989-01-18 1989-01-18 Method for seaming packed cans

Publications (2)

Publication Number Publication Date
EP0378733A1 EP0378733A1 (de) 1990-07-25
EP0378733B1 true EP0378733B1 (de) 1993-04-14

Family

ID=3716793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890101022 Expired - Lifetime EP0378733B1 (de) 1989-01-18 1989-01-20 Verfahren zum Schliessen gefüllter Büchsen

Country Status (2)

Country Link
EP (1) EP0378733B1 (de)
AU (1) AU589847B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110525760A (zh) * 2018-05-27 2019-12-03 郑冰江 一种塑料与金属结合的包装罐及加工方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1827545A (en) * 1925-05-20 1931-10-13 James Merle Finney Machine for making containers
GB2064468B (en) * 1979-12-08 1984-10-10 Metal Box Co Ltd Container seams
US4578007A (en) * 1982-09-29 1986-03-25 Aluminum Company Of America Reforming necked-in portions of can bodies
GB8412244D0 (en) * 1984-05-14 1984-06-20 Metal Box Plc Containers

Also Published As

Publication number Publication date
AU589847B1 (en) 1989-10-19
EP0378733A1 (de) 1990-07-25

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