US3416476A - Container closure seaming method and apparatus - Google Patents

Container closure seaming method and apparatus Download PDF

Info

Publication number
US3416476A
US3416476A US615296A US61529667A US3416476A US 3416476 A US3416476 A US 3416476A US 615296 A US615296 A US 615296A US 61529667 A US61529667 A US 61529667A US 3416476 A US3416476 A US 3416476A
Authority
US
United States
Prior art keywords
rim
seaming
rollers
lip
revolutions
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
US615296A
Other languages
English (en)
Inventor
Wyss Hans
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.)
Afico SA
Original Assignee
Afico SA
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 Afico SA filed Critical Afico SA
Application granted granted Critical
Publication of US3416476A publication Critical patent/US3416476A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 invention relates to the seaming of and end closure with a curled rim to a can body with an outwardly turned lip by a novel method comprising the steps of pinching the rim around the lip, then turning the pinched rim obliquely and downwardly and finally, pressing the rim against the side wall of the can body.
  • the invention also relates to an apparatus for carrying out this method by means of a mandrel provided with a shoulder, a spring loaded roller, a frusto-conical roller and a flattening cylindrical roller.
  • the invention relates further to a can made by the said seaming method.
  • This invention relates to container closures, more particularly to the seaming of an end closure with curled rim on a tin can body with an outwardly turned lip.
  • the can body has a lip turned outwardly at right angles to the body wall and the end closure a curled rim.
  • the curled rim facilitates stacking and easy separation of the end closures, since they do not have the tendency to wedge together.
  • the curled rim is rolled over the lip of the can body, which may be called a roll seam. This rolling is effected by means of a specially profiled roller.
  • the second and last operation consists of flattening and pressing the rolled rim against the wall of the can body.
  • the hooks formed by the lip and rim do not overlap completely. Consequently, the resulting seal may prove defective in that the can is not airtight, chiefly, for example, at the intersection of the rim and the longitudinal seam of the can body. At this place the conditions of seaming prove more diflicult due to the double thickness of the tinplate of the can body. In order to ensure satisfactory air tightness, it is necessary to provide relatively large seams which requires a larger tinplate surface.
  • the present invention provides a novel method for seaming an end closure with a curled rim to a can body having a side wall terminating in an outwardly turned lip, said end closure comprising a downwardly embossed centre portion and an upwardly turned wall portion flaring outwardly from the periphery of said centre portion and terminating in a downwardly curled rim, said method comprising the steps of pinching said curled rim around said lip, by pressing said rim against a projecting portion of holding'means overlapping said curled rim, said holding means comprising a central portion adapted to engage and support the side wall of the closure during the seaming, then turning the pinched rim obliquely and downwardly and finally, pressing the obliquely downturned pinched rim against the side wall of the can body.
  • the invention also relates to an apparatus for seaming an end closure to a can body having a side wall terminating in an outwardly turned lip, said end closure comprising a downwardly embossed centre portion and an upwardly turned wall portion flaring outwardly from the periphery of said centre portion and terminating in a downwardly curled rim, said apapratus comprising holding means adapted to position the curled rim of the closure over the lip of the can body, said holding means comprising a central portion adapted to engage and support the side wall of the closure during the seaming and a projecting portion overlapping the curled rim of the closure, pinching means adapted to pinch said curled rim around said lip by pressing said rim against the projecting portion of the holding means, means for turning the pinched rim obliquely and downwardly and means for pressing the obliquely downturned pinched rim against the side wall of the can body.
  • the invention also provides a can, particularly made out of thin tinplate, obtained by the above seaming method.
  • FIGURES 1 to 4 which are partial sections through the seam, illustrate the different stages of the operation according to the invention.
  • FIGURESS to 7 illustrate diagrammatically various embodiments of the apparatus according to the invention.
  • the seaming of the end closure 2 with a curled rim is effected on a can body 1 having a lip turned outwardly at right angles to the body wall.
  • the end closure rests on a mandrel 3 having a shoulder and said end closure is supported on two of its faces on said mandrel.
  • the downwardly embossed centre portion is supported namely on the slightly conical side of the mandrel and the flatter part of the rim which covers the lip of the can body is supported by the projecting portion of the mandrel.
  • the periphery of the rim is closed around the outwardly turned lip of the body by pinching it between the projecting portion of the mandrel 3 and a roller 4 of generally cylindrical form. This roller may slide axially on the shaft 5 supported by the seaming head of a machine of known type and is pressed against the projecting portion of the mandrel by a spring 6.
  • the rim of the end closure is compressed in such a way as to eliminate progressively any wrinkling which may form therein, the projecting portion of the mandrel being used as a support during this operation.
  • the second operation consists of turning the pinched rim downwardly through an angle of about 45, by means of a frusto-conical roller 7 turning round the can body (FIG. 3).
  • the third operation consists of pressing and flattening the pinched rim against the side wall of the can body whilst it is supported by the side of the mandrel.
  • This operation is effected by means of an essentially cylindrical roller having a groove with approximately the profile of the seam and turning round the can body (FIG. 4).
  • the method according to the present invention compared to the known method, has the following advantages:
  • This process may be applied when the seaming head rotates with respect to the can body, and also when the can body rotates and the seaming rollers remain stationary.
  • the apparatus comprises 4 seaming rollers symmetrically disposed with respect to the axis of the mandrel (M) spaced at 90 intervals from each other as illustrated in FIG. 5, the rollers being supported by a rotatable seaming head.
  • the number of revolutions needed for the seaming head to carry out the process is 4% revolutions, which cycle may be divided as follows:
  • the apparatus comprises a roller for each operation i.e. 3 rollers m disposed around the mandrel M as shown in FIG. 6. If an overlap of of a revolution between each operation is taken into account, the effective angular displacement of the seaming head is 5 /2 revolutions with 3 /2 turns instead of 2 for the first operation.
  • the mandrel M and the can body rotate relative to the stationary seaming rollers
  • the 3 rollers may be arranged as illustrated by FIG. 7 instead of being arranged at 120 intervals. In comparison to the preceding embodiment, this arrangement allows for a greater overlap between the operations; bringing them to revolution, the total angular displacement of the can is 5 /6 revolutions.
  • a method for seaming an end closure to a cam body having a side wall terminating in an outwardly turned lip, said end closure comprising a downwardly embossed centre portion and an upwardly turned wall portion flaring outwardly from the periphery of said centre portion and terminating in a downwardly curled rim said method-comprising the steps of pinching said curled rim around said lip, by pressing said rim against a projecting portion of holding means overlapping said curled rim, said holding means comprising a central portion adapted to engage and support the side wall of the closure during the seaming, then turning the pinched rim obliquely and downwardly and finally, pressing the obliquely downturned pinched rim against the side wall of the can body.
  • An apparatus comprising 4 seaming rollers symmetrically disposed about the axis of said holding means, said rollers being supported by a rotatable seaming head.
  • An apparatus comprising two spring-loaded pinching rollers, one frusto-oonical roller and one substantially cylindrical flattening roller.
  • An apparatus comprising rotatable holding means and 4 stationary seaming rollers spaced at intervals around said holding means.
  • An apparatus comprising 3 seaming rollers spaced at intervals from each other and being supported by a rotatable seaming head.
  • An apparatus comprising rotatable holding means and 3 stationary seaming rollers at 120 from each other.
  • An apparatus comprising rotatable holding means and 3 stationary seaming rollers grouped close together.
  • A can, particularly made out of thin tinplate, ob- 2,455,737 12/1948 Coyle 113-120 tained by the method of claim 1. 2,643,627 6/ 1953 Wobbe 113-120 References Cited CHARLES W. LANHAM, Primary Examiner. UNITED STATES PATENTS 5 RONALD D. GREFE, Assistant Examiner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Sealing Of Jars (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Electrostatic Spraying Apparatus (AREA)
US615296A 1966-02-11 1967-02-06 Container closure seaming method and apparatus Expired - Lifetime US3416476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH198066A CH451862A (fr) 1966-02-11 1966-02-11 Procédé de sertissage de boîtes métalliques et dispositif pour la mise en oeuvre de ce procédé

Publications (1)

Publication Number Publication Date
US3416476A true US3416476A (en) 1968-12-17

Family

ID=4223092

Family Applications (1)

Application Number Title Priority Date Filing Date
US615296A Expired - Lifetime US3416476A (en) 1966-02-11 1967-02-06 Container closure seaming method and apparatus

Country Status (8)

Country Link
US (1) US3416476A (fr)
CH (1) CH451862A (fr)
DE (2) DE1602544A1 (fr)
ES (2) ES336681A1 (fr)
FR (1) FR1510798A (fr)
GB (1) GB1144746A (fr)
NO (1) NO125481B (fr)
SE (1) SE333128B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263860A (en) * 1979-06-18 1981-04-28 Greif Bros. Corporation Seal drum with end closure having reinforced seams
US4692132A (en) * 1982-06-30 1987-09-08 Toyo Seikan Kaisha, Ltd. Process for preparing a sealed laminated vessel
US20250214309A1 (en) * 2023-10-17 2025-07-03 Packsys Global Ag Folding rail

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500410B1 (fr) * 1981-02-23 1986-11-21 Greif Bros Corp Procede de fabrication d'un tonneau a joints renforces et tonneau ainsi obtenu
DE3419182A1 (de) * 1984-05-23 1985-11-28 Elring Dichtungswerke Gmbh, 7012 Fellbach Verfahren und vorrichtung zum festlegen eines einfassungsbleches an einer durchgangsoeffnung einer flachdichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196206A (en) * 1936-03-20 1940-04-09 American Can Co Container
US2337452A (en) * 1940-12-02 1943-12-21 Robert W Compo Method of making container closures
US2455737A (en) * 1944-07-29 1948-12-07 Continentai Can Company Inc Method of attaching metal closures to containers
US2643627A (en) * 1950-12-28 1953-06-30 American Can Co Method of producing cushion in seams of containers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196206A (en) * 1936-03-20 1940-04-09 American Can Co Container
US2337452A (en) * 1940-12-02 1943-12-21 Robert W Compo Method of making container closures
US2455737A (en) * 1944-07-29 1948-12-07 Continentai Can Company Inc Method of attaching metal closures to containers
US2643627A (en) * 1950-12-28 1953-06-30 American Can Co Method of producing cushion in seams of containers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263860A (en) * 1979-06-18 1981-04-28 Greif Bros. Corporation Seal drum with end closure having reinforced seams
US4692132A (en) * 1982-06-30 1987-09-08 Toyo Seikan Kaisha, Ltd. Process for preparing a sealed laminated vessel
US20250214309A1 (en) * 2023-10-17 2025-07-03 Packsys Global Ag Folding rail
US12371210B1 (en) * 2023-10-17 2025-07-29 Origin Materials Operating, Inc. Device for folding of an edge portion of a closure cap
US20250242955A1 (en) * 2023-10-17 2025-07-31 Packsys Global Ag Device for folding of an edge portion of a closure cap

Also Published As

Publication number Publication date
CH451862A (fr) 1968-05-15
FR1510798A (fr) 1968-01-19
NO125481B (fr) 1972-09-18
DE6605667U (de) 1970-07-09
DE1602544A1 (de) 1971-08-26
SE333128B (sv) 1971-03-08
ES336681A1 (es) 1968-01-16
ES340793A1 (es) 1968-06-16
GB1144746A (en) 1969-03-05

Similar Documents

Publication Publication Date Title
JPH0239633Y2 (fr)
EP0059196B1 (fr) Recipients
US3765351A (en) Method and apparatus for beading, necking-in and flanging metal can bodies
EP0391863A1 (fr) Machine à sertir les couvercles de boîtes métalliques et conteneurs similaires, en particulier de boîtes à conserves
JP2001179375A (ja) 缶体を伸張及びモールド成形する装置
US3763807A (en) Method of forming necked-in can bodies
US4055133A (en) Method and apparatus for triple roll seaming end closures to container bodies
US3757558A (en) Apparatus for necking-in tubular members
US3416476A (en) Container closure seaming method and apparatus
US3912109A (en) Metal container and method for making same
US4555208A (en) Method of fitting a metal closure
US3680350A (en) Necking-in die pilot
US2643627A (en) Method of producing cushion in seams of containers
GB2166410A (en) Seaming ends to containers
US3223063A (en) Method of making a low pressure, hermetically sealed, sheet metal container
US1705843A (en) Method and apparatus for forming an interiorly beaded or looped tearing-strip can
US3358876A (en) Reverse seam can with hermetic drumhead
US4389147A (en) Can support system
US3204595A (en) Clinched seam formation
US4540323A (en) Metal containers and their manufacturing method and apparatus
JPH04220125A (ja) 缶端板
US3714755A (en) Method and apparatus for supporting flexible container bodies in a closing machine
WO2012143263A1 (fr) Procédé et appareil permettant de sertir des récipients et double sertissage obtenu de la sorte
US3083663A (en) Manufacture of cans
US3006304A (en) Can closing machine