EP0126015B1 - Procédé de sertissage d'un couvercle métallique - Google Patents

Procédé de sertissage d'un couvercle métallique Download PDF

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Publication number
EP0126015B1
EP0126015B1 EP84420067A EP84420067A EP0126015B1 EP 0126015 B1 EP0126015 B1 EP 0126015B1 EP 84420067 A EP84420067 A EP 84420067A EP 84420067 A EP84420067 A EP 84420067A EP 0126015 B1 EP0126015 B1 EP 0126015B1
Authority
EP
European Patent Office
Prior art keywords
container
cover
ring
edge
blank
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
EP84420067A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0126015A1 (fr
Inventor
Bernard Houdayer
Bernard Le Fur
René Meneghin
Jean-Michel Moniod
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.)
Albea Tubes France SAS
Original Assignee
Cebal SAS
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 Cebal SAS filed Critical Cebal SAS
Priority to AT84420067T priority Critical patent/ATE28282T1/de
Publication of EP0126015A1 publication Critical patent/EP0126015A1/fr
Application granted granted Critical
Publication of EP0126015B1 publication Critical patent/EP0126015B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/02—Closing bottles, jars or similar containers by applying caps by applying flanged caps, e.g. crown caps, and securing by deformation of flanges
    • B67B3/10—Capping heads for securing caps
    • B67B3/12—Capping heads for securing caps characterised by being movable axially relative to cap to deform flanges thereof, e.g. to press projecting flange rims inwardly
    • 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
    • B21D51/34—Folding the circumferential seam by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/285—Securing closures on containers by deformation of the closure

Definitions

  • the field of the invention is the mechanical working of metals and more particularly the shaping of the edges of a metal cover.
  • US-A-3,190,481 describes the crimping of a cover blank having a central hollow coming to be housed in the orifice of a glass container, this blank having a shaped outer edge. in a U that a pressing tool with a radiated interior shape gradually deforms so that the U-shaped edge tips under the bulged edge of the container, thus carrying out the crimping.
  • the patent GB-A-891,341 describes the crimping of a blank cover, having on its periphery a groove whose outer skirt ends with an outwardly rolled edge carrying spaced narrow slots, on a container having a rolled outer rim, when this cover blank is disposed on the container its groove overlaps the outer rim of this container.
  • the annular tool of the crimping machine has a radiated interior shape which allows the gripping of the blank cover by its rolled edge.
  • this annular tool produces the tightening of the outer skirt of the cover blank around the outer rim of the container, tightening accompanied by the crimping of the rolled end edge of this skirt under this outer rim, thanks to the action of the vertical surface of the annular tool, which overcomes its radiated interior shape.
  • the cover blank includes a shaped or rolled outer edge for crimping which uses a relatively large amount of metal or material and is an economic handicap.
  • the invention relates to a sealed crimping process for a cover in which the crimping is carried out in a single operation by translation of one or more shaped tools and in which the extreme edge of the cover blank has been hemmed, but much more limited than in the two patents cited above and for a different purpose.
  • An essential objective of the invention is the saving of material and the method of the invention uses a blank cover surface just sufficient to allow the attachment under the ring of the container of the end of the edge of the cover, without that there is excess metal in the form of a rolled edge or a folded edge.
  • the extreme edge of the blank of the cover of the invention is hemmed over 100 ° to 140 °, and it has a double role: it serves as a primer side for the deformation of the periphery of the blank, and the other side, towards its end, of primer for hanging the cover under the bulged ring of the container.
  • the complex deformation of the periphery of the blank, leading to its crimping under the bulged ring of the container and to its tightening on this ring, is made by a special annular mandrel, or by several external mandrels of the same function as this annular mandrel.
  • the edge of the U shaped blank or rolled blank is tilted or folded and then pushed back under the bulged edge of the container
  • the deformation mechanism complex of the edge of the cover blank in the method of the invention consists of a drawing accompanied by a tightening and ending with a hooping, having the overall effect of the tight crimping of the cover.
  • the edge is thus unfolded and crimped without unrolling or tilting it.
  • this crimping is carried out in a single operation by translation of an annular mandrel of particular shape parallel to the common axis of symmetry of the edge of the container and of the cover.
  • this crimping essentially combines a stamping process without a blank holder for the blank of the cover by the punch which constitutes the rigid ring of the container and the matrix which constitutes the annular mandrel, and a process of rolling the metal in a groove of the mandrel, rolling itself thwarted by the outside of the ring of the container.
  • a non-limiting example of a container, the edge of which comprises a rigid ring having a bulge, an example corresponding to a glass jar, will make it possible to better describe the invention and to specify certain details thereof.
  • FIG. 1 it can be seen that the cover blank 1 has been pre-curled according to known methods, so as to allow, on the one hand, easy unstacking, on the other hand, the initiation of the deformation process and crimping.
  • This cover blank 1 comprises a hollow central part 2 and an annular edge 3 which will overlap the rigid swollen ring of the stopper container as shown in FIG. 2.
  • the annular part itself successively comprises: an annular zone of support 20, an inclined intermediate zone 18 and an extreme edge 14 of concavity turned inwardly hemmed over approximately 120 °.
  • the extreme edge 14 has, moreover, in cross section a small radius r 2 (FIG. 2) so that it cannot become embedded on the outside of the ring 4 of the container and that it comes to hang on under the ring 4 only after deformation of the periphery 14 and 18 of the cover blank 1 by the annular mandrel.
  • An annular mandrel 10 having a vertical translational travel controlled by an elastic cylinder surrounds the presser-centering device 7 with a small clearance, the presser-centering device also serving to ensure the centering of this mandrel 10 relative to the ring 4 of the jar. While the outside 11, 12, 13 of the edge of the ring 4 can be inscribed in a circle of radius r l , the internal radius r 2 of the extreme edge 14 of the cover is significantly smaller than r, and the radius R of the shape 15 of the annular mandrel 10 is greater than r i .
  • the shape 15 of the mandrel is connected with a radius r 3 to a lower part and with a radius r 4 to the vertical central orifice 16.
  • the working parts of the mandrel namely the shape 15 and its connections of radius r 3 and r 4 as well as the bottom of the central orifice 16 have a surface condition and a hardness suitable for the rolling and crimping work of the metal cover, in this case aluminum.
  • the cover 1 thus being in place in the crimping device, between the ring 4 of the glass jar surmounted by the seal 5 and the presser-centering device 7 surrounded by the movable annular mandrel 10, the crimping work begins with a first rolling phase (FIG. 3) in which the annular mandrel 10 descending vertically as indicated by the arrow progressively makes contact first by the arrangement of radius r 3 with the end edge 14 of the cover, then by the shape 15 of radius R with the part of the cover 18 immediately contiguous to this border 14 and returns them downwards and under the lower part of the ring by a rolling effect in the peripheral shape 15 inclined and radiated along the radius R.
  • a first rolling phase (FIG. 3) in which the annular mandrel 10 descending vertically as indicated by the arrow progressively makes contact first by the arrangement of radius r 3 with the end edge 14 of the cover, then by the shape 15 of radius R with the part of the cover 18 immediately contiguous to this border 14 and returns them downward
  • This surprising self-centering effect makes it possible not to center the container with precision along the vertical axis of symmetry of the presser-centering device and the cover blank, for example better than 0.3 to 0.5 mm per relation to this axis.
  • the annular mandrel 10 comes into asymmetrical support on the periphery 14 of the cover blank 1 and it seems that the transmission of asymmetrical support forces to the ring 4 of the container via the inclined intermediate zone 18 and the elastic seal 5 is sufficient to drive the container aside, until the support forces corresponding to the precise centering of the container have been balanced.
  • This self-centering effect linked to the progressive intervention of the press-centering device at the start of the action of the annular mandrel, is an important advantage of the process, particularly in the case of glass containers.
  • connection area of radius r 4 then the vertical surface 16 of the central orifice of the mandrel 10 continue to exert an effect of pushing back the material of the cover under the lower part of the ring, and also exert a clamping effect on the previously rolled part 14 and on the immediately contiguous part 18.
  • the progressive descent of the centralizing presser 7 during the downward translation of the mandrel 10 can be either mechanically controlled, or more simply be done under its own weight, the centralizing presser 7 now in constant support the seal 5 which is gradually compressed by the tension due to the deformation of the edge of the cover.
  • the blank cover 1 is shaped from a sheet or strip of aluminum alloy 5052 according to the specification of the Aluminum Association, of thickness between 0.2 and 0.4 mm and of hardness H22 to H28 according to standard NFA02-006, and the initial thickness of the seal 5 is between 0.6 and 1 mm.
  • the outside of the edge of the jar of the jar fits in a cross section in a circle of radius r, between 2 and 5 mm
  • the extreme edge 14 of the lid 1 is pre-hemmed with a radius r 2 between 1.5 and 4mm
  • the shape 15 of the annular mandrel is radiated according to a radius (R) between 3 and 8 mm and its axis of symmetry in cross section, shown in the Figure 4, makes an angle between 30 ° and 60 ° with the common axis of symmetry of the edge of the container and the lid, axis coincides with the axis of symmetry of revolution of the annular mandrel 10 in the case of the example.
  • the end 19 of the end edge 14 of the cover can be located in the radiated part along the internal radius r 2 or be a non-conforming extra length of this radiated part.
  • the outside diameter of the centralizing presser 7 is typically equal to or slightly greater by 0.5 to 1.5 mm than the outside diameter of the ring 4 of the container (diameter at point 12 in the case of FIG. 2) and the mandrel 10 slides at low clearance - less than 0.2 mm - around the centering presser 7.
  • the edge of the cover 18, 14, 19 preferably has no discontinuities in form or shape.
  • the central presser 7 had a centering pin 8 with a diameter of 71.5 mm and a height of 1.5 mm, and its outside diameter was 83.5 mm.
  • the annular mandrel 10 had a vertical interior surface 16 of diameter 83.6 mm, sliding freely around the presser-centering device which thus served not only to center the blank of cover 1 but also the annular mandrel 10 during its translational movement .
  • the pressure was applied by the same head: on the presser-centering device by means of a spring, and on the annular mandrel. At the start of the operation, a precise refocusing effect of the container was observed, improving the initial centering from 0.3 to 0.4 mm.
  • the effort was limited to 45 kg on the presser-centering device, the maximum effort recorded for the entire presser-centering device (elastic support) and the annular mandrel (crimping work) was 100 to 110 kg for a series of fifteen jars.
  • the elastic support of the presser-centering device is therefore preferable, both to promote precise self-centering of the container and to avoid the return of air at the end of the crimping operation.
  • the inclined intermediate zone 18 succeeding the support zone 20 typically makes an angle of 30 to 60 ° with the direction of the axis.
  • the extreme edge 14 following this intermediate zone 18 preferably has an internal radius r 2 of between 0.5 times and 0.8 times the envelope radius r, of the external contour of the bulged edge of the ring 4 of the container in axial section.
  • the overall outside diameter of the cover blank 1, the diameter corresponding to its extreme edge 14, has a value typically equal to the outside diameter of the bulged ring 4 of the container increased by 0.8 times to 1.3 times the height of this ring 4.
  • the process can be carried out with a blank cover of reduced surface area, its annular part 3 or else 20 and 18 and 14 having in axial half-section a developed length of between 0.9 times and 1, 2 times the total developed length of the rim 6 and of the lateral and lower contour of the bulged ring 4 of the container.
  • the thick elastic seal typically between 0.6 and 1 mm thick, can be made, for example, of a plasticized polyvinyl chloride plastisol, and applied by casting, by spraying or simply deposited and possibly bonded, like this is usual and known;
  • the method can optionally be applied with, instead of an annular mandrel, several mandrels coming into contact simultaneously or successively with several parts of the periphery of the outer edge of the cover.
  • the cover may be an easy-opening cover, for example for preserves intended to be used from the first opening, or for preserves for successive uses, the jar then being provided with an over-cover for successive fillings.
  • the invention typically applies to glass jars whose orifice has a diameter between 50 and 110 mm.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Ceramic Products (AREA)
  • Table Devices Or Equipment (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Closing Of Containers (AREA)
EP84420067A 1983-04-13 1984-04-11 Procédé de sertissage d'un couvercle métallique Expired EP0126015B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84420067T ATE28282T1 (de) 1983-04-13 1984-04-11 Verfahren zum einfassen eines metallischen deckels.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8306323A FR2544235B1 (fr) 1983-04-13 1983-04-13 Procede de sertissage d'un couvercle metallique
FR8306323 1983-04-13

Publications (2)

Publication Number Publication Date
EP0126015A1 EP0126015A1 (fr) 1984-11-21
EP0126015B1 true EP0126015B1 (fr) 1987-07-15

Family

ID=9287974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84420067A Expired EP0126015B1 (fr) 1983-04-13 1984-04-11 Procédé de sertissage d'un couvercle métallique

Country Status (11)

Country Link
US (1) US4555208A (el)
EP (1) EP0126015B1 (el)
AT (1) ATE28282T1 (el)
CA (1) CA1235101A (el)
DE (1) DE3464703D1 (el)
DK (1) DK189284A (el)
ES (1) ES531553A0 (el)
FR (1) FR2544235B1 (el)
GR (1) GR81780B (el)
IE (1) IE56238B1 (el)
PT (1) PT78417B (el)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813557A (en) * 1984-03-05 1989-03-21 Sewell Plastics Inc. Pasteurizable container closure
US4628669A (en) * 1984-03-05 1986-12-16 Sewell Plastics Inc. Method of applying roll-on closures
US5035106A (en) * 1989-12-12 1991-07-30 Ccl Industries Method of sealing a valve to an aerosol container
US5457943A (en) * 1990-07-12 1995-10-17 Hertrampf; Michael Method for forming a sealing closure for a bottle
RU2164887C1 (ru) * 2000-03-24 2001-04-10 Общество с ограниченной ответственностью "Водолей 2001" Банка для продуктов и способ ее изготовления
AUPR038300A0 (en) * 2000-09-26 2000-10-19 Cryovac Australia Pty Ltd Reclosable container
US20040143541A1 (en) * 2003-01-15 2004-07-22 Fleischer Mark O. Limit move insurance
CN1331623C (zh) * 2003-10-13 2007-08-15 徐象辉 化学氧罐的封边方法
US6857250B1 (en) 2004-01-07 2005-02-22 Canberra Corporation Mechanism for applying a roller formed closure to a container
US8746488B2 (en) * 2005-03-01 2014-06-10 Crown Packaging Technology, Inc. Packaging can and method and apparatus for its manufacture
US20100137116A1 (en) * 2008-12-03 2010-06-03 Hanwit Precision Industries Ltd. Quick-positioning screw assembly machining method
US20160152360A1 (en) * 2011-07-07 2016-06-02 Berry Plastics Corporation Lid sealing system
IT202200008969A1 (it) * 2022-05-03 2023-11-03 Sarong Spa Apparato e metodo di applicazione di un corpo anulare ad una flangia perimetrale di una capsula.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL191728A (el) *
US3104773A (en) * 1963-09-24 Closures
US1276343A (en) * 1915-12-11 1918-08-20 William E Gaston Bottle-closure.
US1623245A (en) * 1925-04-18 1927-04-05 American Can Co Method for closing containers
DE471768C (de) * 1926-12-17 1929-02-19 Moriz & Barschall Verfahren zum Verschliessen von Flaschen mittels ueber den Kopf gestuelpter Kappe aus Papier oder Karton u. dgl.
US1713858A (en) * 1927-01-31 1929-05-21 Swan N Tevander Closure cap
US2196877A (en) * 1937-01-27 1940-04-09 Spengrey Cap Corp Closure
US2802322A (en) * 1950-09-08 1957-08-13 Podesta Armando Method for the sealing of containers by means of pre-curled metal caps
GB891341A (en) * 1959-01-28 1962-03-14 Metal Box Co Ltd Improvements in or relating to vacuumised cans
US3190481A (en) * 1962-08-29 1965-06-22 Corning Glass Works Container and closure therefor
GB1130883A (en) * 1964-12-03 1968-10-16 John Henry William Ratzer Improvements relating to containers
FR2344461A1 (fr) * 1976-03-18 1977-10-14 Bouchage Mecanique Perfectionnements aux capsules metalliques

Also Published As

Publication number Publication date
DK189284D0 (da) 1984-04-12
EP0126015A1 (fr) 1984-11-21
FR2544235A1 (fr) 1984-10-19
IE56238B1 (en) 1991-05-22
ATE28282T1 (de) 1987-08-15
ES8501650A1 (es) 1984-12-01
ES531553A0 (es) 1984-12-01
GR81780B (el) 1984-12-12
IE840905L (en) 1984-10-13
PT78417B (pt) 1986-05-07
FR2544235B1 (fr) 1988-03-18
US4555208A (en) 1985-11-26
DE3464703D1 (en) 1987-08-20
PT78417A (fr) 1984-05-01
CA1235101A (fr) 1988-04-12
DK189284A (da) 1984-10-14

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