EP1029613B1 - Fabrication de collerettes a partir d'ebauches sans perte de materiel - Google Patents

Fabrication de collerettes a partir d'ebauches sans perte de materiel Download PDF

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Publication number
EP1029613B1
EP1029613B1 EP00107477A EP00107477A EP1029613B1 EP 1029613 B1 EP1029613 B1 EP 1029613B1 EP 00107477 A EP00107477 A EP 00107477A EP 00107477 A EP00107477 A EP 00107477A EP 1029613 B1 EP1029613 B1 EP 1029613B1
Authority
EP
European Patent Office
Prior art keywords
blank
ring
process according
tool
cylindrical
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
EP00107477A
Other languages
German (de)
English (en)
Other versions
EP1029613A1 (fr
Inventor
Wolfgang Peter
Hans Hartung
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.)
Trivium Packaging Group Netherlands BV
Original Assignee
Impress Group BV
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 Impress Group BV filed Critical Impress Group BV
Publication of EP1029613A1 publication Critical patent/EP1029613A1/fr
Application granted granted Critical
Publication of EP1029613B1 publication Critical patent/EP1029613B1/fr
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
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B21D53/18—Making other particular articles rings, e.g. barrel hoops of hollow or C-shaped cross-section, e.g. for curtains, for eyelets
    • 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
    • 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
    • B21D51/44—Making closures, e.g. caps

Definitions

  • the technical field of the invention is the method of forming metallic cover rings needed for placement and flanging on a container of a round or non-circular nature.
  • Such cover rings are punched out of flat sheet metal in the prior art, wherein in the middle of a blank, which represents waste; needed for the further production of the container but only the cover ring.
  • Claim 2 is an advantageous development.
  • a blank is first to be produced in such a way that the metal cover ring can be formed from it, as required by the technical problem.
  • the method of manufacturing the blank in a substantially cylindrical form comprises reducing a cup-shaped base of a container from a first diameter to a smaller diameter, in a deep drawing process or a turn-up process.
  • reducing operation reducing
  • the reducing operation is stopped short to well before the end to leave a cylindrical strip at an upper end of the almost completely formed lower part, which, after a circumferential separation along a circumferential parting line to the cylindrical blank, from which essentially flat extending lid ring is malleable.
  • the invention achieves the creation of the not yet finished molded cylinder ring (as the ring blank), which results from a can body, made with a Stülpzug tool or a telescopic tool.
  • a step tool can also be used to form the ring blank.
  • the can body is formed from a sheet metal cutout in a round or non-circular design.
  • the ring blank with the "drawing ring outer dimension" of the cover ring which is substantially cylindrical or oval (non-circular), has only a small, inwardly projecting annular web.
  • a ring blank is to be understood as meaning cylinder segments which are not necessarily circular, but have a wall height extending significantly in the axial direction.
  • a cylinder is understood in the sense of the description, a non-circular cylinder, which is oval, with significant extension of the wall in the axial direction.
  • Such a "cylinder segment" is separated from a not yet fully formed can body, the separation occurs shortly until well before the end of the last Reduziervorgangs, especially after between 80% and 95% of the drawing process, if and as far as the required amount of material in the remaining cylinder segment with the Material amount matches, which is provided for the formation of the cover ring (claim 2).
  • the shape of the dividing line T follows the shape of the ring blank (claim 8).
  • the cylinder segment is introduced after emergence into an assembly of a plurality of annular tool segments and moved axially downwards to transform it over a Umlenklippe in a radial direction, where it is a radial inwardly deformed and extending in the radial direction cover ring is.
  • the deflection over a Umlenklippe done so that the downwardly / inwardly deformed cylinder segment is pressed into a gap which is defined by an upper and an underlying tool segment.
  • the forming process converts the cylindrical blank (in an annular to oval base shape) into a flat ring blank, which additionally receives an erected ring wall with internal rolling in an upward gear of a further ring punch.
  • a cylindrical recess in the outer tool segment is adapted to the basic shape of the cylindrical blank. It may also have an oval basic shape, but with an axially clear extension to accommodate the cylindrical blank and move downwards.
  • the recess is adapted in its radial extent to the thickness of the cylinder segment to be reshaped.
  • FIG. 1 or 2 It should be noted that the drawing or everting operation is stopped shortly before its end (about 80% to 95% before the end of the last reduction operation) so as not to retract the upper edge 40a of the hull to 2 ⁇ r 1 in diameter. As a result, the edge region 40a remains as the cover ring blank VR when it is separated circumferentially at T (parting line).
  • the disassembled hull 30/40 in residual hull 30 and cover ring blank 40 is from FIG. 3 illustrated.
  • the dividing line T, both in FIG. 1 as well as in FIG. 2 is shown corresponds to the circular or oval basic shape of the container 30. The separation takes place in FIG.
  • FIG. 2 the separation takes place from the top or bottom of the dividing line T, wherein the last Reduziervorgang, for example, when manufactured with a telescopic tool, or the last stage of a step tool is not completed, so that the cylindrical blank remains above the fuselage 30, while he in FIG. 1 remained next to the hull, but in both versions with a larger diameter than the finished reduced hull.
  • the further processing of the ring blank 3 to a finished cover ring 4 can be done both by a single-stage tool 5 and by a multi-stage tool.
  • the first level is off Figure 6a, 6b, 6c
  • the second stage is over FIG. 7 , the third step out FIG. 8a and Figure 8b.
  • the transfer between the stations takes place z. B. via a gripper transport.
  • the function and the method of operation will be explained and supplemented by the following examples of tool designs.
  • FIGS. 5a to 5e show the functionality of the single-stage tool.
  • the detached from the box ring VR is mechanically or manually on Part 5 from FIG. 5a hung up.
  • the tool parts 2, 3 and 4 are moved into the ring through the machine stroke and form a gap S of 0.8 ⁇ sheet thickness to the parts 5, 6 and 7.
  • the parts remain in this position until the shoulder 1 a of the punch 1 Sheet metal ring in the axial further decline of Part 1 as far radially v 0 'has inserted, that the sheet metal ring VR, 10, the horizontal position in FIG. 5b has reached.
  • v denotes directions of movement (oriented at speeds), wherein the "painted" variables v 0 ', v 1 ', v 2 'radial components of the sheet and the "non-painted" variables v 0 , v 1 , v 2 , v 3 axial movements of the tool.
  • the parts 2 and 3 subsequent parts 5 and 6 push the line 20d of the cover ring in the rolling groove 4a of the rolling ring 4. Since the forces of the parts 5 and 6 and the counter-acting rolling ring 4 are greater than the Form Sungsfestig-speed of Sheet material, formed on the Anreifung the cover ring assembly in the rolling groove 4 a of the rolling ring 4, an inner roller 20 e of the cover ring. After completion of the stroke of the cover ring has the shape FIG. 5e accepted. The part 3 is then relieved by force, the parts 1,2 and 5 move back to the starting position. When moving apart of the tool, the ring is ejected in FIG. 4 is shown.
  • Figures 6a, 6b, 6c . 7 and 8,8a represent the production of the cover ring in three or more possible operations.
  • the production can be carried out both on individual presses as well as on step or transfer presses.
  • first part 2 centered on the inner portion 40b of the sheet metal ring 100.
  • part 5 By placing on a stop forms part 2 and part 5 (without plate) a gap of 0.8 ⁇ sheet thickness.
  • part 1 goes over the outer portion 40a of the sheet metal ring 100 and pushes the ring with the shoulder 10 through the acted upon with a hold-down force part 5, the part 2 with a gap S ⁇ sheet thickness forms up to the inner diameter of the finished cover ring.
  • the sheet metal ring 100 then has the form of FIG.
  • the punch 8 reaches its end position simultaneously and squeezes with its cutting edge 12 approximately to a depth of 0.5xBlechdicke on the cutting edge 11 of part 7, the sheet in the recess provided for this purpose.
  • part 1 By placing part 1 on the section 5x of part 5, part 5 is pushed down.
  • Part 2 follows Part 5 with applied hold-down force. Because the sheet metal ring is clamped in the region of the cutting edges 11,12, during the continued stroke of the sliding operation changes into a drawing operation. As a result, the line 13 for the following inner roller of the sheet metal ring 100 after FIG. 6c reached.
  • FIG. 6c It should be noted that the axially erected wall 13 (see 20d in FIG. 5d ) is produced by pulling, which is opposite to the thrust of FIG. 5c Has advantages when the radii are larger.
  • the preformed sheet metal ring 100 is transported into the trimming station and placed on the ejector ring 6 '.
  • the preformed sheet metal ring 100 is transported into the trimming station and placed on the ejector ring 6 '.
  • the preformed sheet metal ring 100 is transported into the trimming station and placed on the ejector ring 6 '.
  • the preformed sheet metal ring 100 is in position, so that the subsequent punch 8 'on the cutting punch 9b can separate the inner edge 100r.
  • the separated ring 100r is discharged through the lower die.
  • the trimmed sheet metal ring after FIG. 7 is then in the finishing station of FIG. 8 transported and stored on the above flush parts 5 'and 6'.
  • the during the Pressenhubes coming from top to bottom coming parts 2 'and 3' are also considered from below flush and center with the internal dimension of part 3 'on the external dimensions of the formation 13 of the sheet metal ring 100th If the lineup 13 inside over part 7 outside is fully centered, part 6 'remains on a stop, part 3' springs during the further tooling decline on the sheet metal ring 100 and part 6 'overlying back. Part 5 'then forms over the blank holder 2' the edge of the sheet metal ring 14 to the bottom dead center of the press.
  • This multi-stage production is particularly suitable for cover rings with a wider radial flange 20c.
  • the invention comprises a method for forming metallic cover rings (20; 20a, 20b, 20c, 20d, 20e) with the inside (21) open and the annular profiled edge (20a, 20b, 20c, 20e).
  • a cylindrical blank (10, VR) produced by severing (T) from an underformed lower part (30) is formed in a concentric arrangement of a plurality of annular tool segments (1 to 7) from an outer (1) of the tool segments (1 to 7) axially downwards (v 0 ) shifted. In this case, it is converted into a radial direction (v 0 ') via an annular deflecting lip (5 a) of a radially further inner tool segment (5) of the concentric arrangement of several tool segments (1 to 7).
  • an upper die segment (2) is held to define a nip (S) into which the radially inwardly deformed (v 0 ') blank (10; VR; HR) is forced.
  • the waste in the interior (21) of the resulting cover ring (20) is thus avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Closures For Containers (AREA)
  • Packaging For Recording Disks (AREA)
  • Mechanical Operated Clutches (AREA)
  • Wrappers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Making Paper Articles (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fluid-Damping Devices (AREA)
  • Table Devices Or Equipment (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Gloves (AREA)

Claims (11)

  1. Procédé de fabrication d'une ébauche sensiblement de forme cylindrique (40 ; 40a, 40b)
    pour un procédé destiné à former des anneaux de recouvrement métalliques (20 ; 20a, 20b, 20c, 20d, 20e) comportant un intérieur ouvert (21) et un bord profilé annulaire (20a, 20b, 20c, 20e), dans lequel l'ébauche cylindrique (10, VR) est déplacée axialement vers le bas (v0) dans une combinaison concentrique de plusieurs segments d'outil annulaires (1 à 8) par un segment extérieur (1) des segments d'outil (1 à 8), afin d'être déformée dans une direction radiale (v0') par l'intermédiaire d'une lèvre de déviation annulaire (5a) d'un segment d'outil (5) situé radialement plus à l'intérieur de la combinaison concentrique de plusieurs segments d'outil (1 à 8), et un segment d'outil supérieur (2) est retenu au-dessus de la lèvre de déviation (5a) afin de définir une fente (S), dans laquelle est comprimée l'ébauche (10 ; VR ; HR) déformée radialement vers l'intérieur (v0') ; où, pour la fabrication de l'ébauche cylindrique,
    (a) au cours d'une opération d'emboutissage profond ou d'emboutissage par retournement, une partie inférieure en forme de bol (30) d'un récipient est réduite d'un premier diamètre (2r2) à un diamètre plus faible (2r1) ;
    (b) la réduction selon la caractéristique (a) est interrompue juste avant la fin ou nettement avant la fin, de manière à ne laisser plus qu'une bande cylindrique (40a) à une extrémité supérieure de la partie inférieure (30, 40) presque entièrement déformée, qui, après une découpe circonférentielle le long d'une ligne de séparation circonférentielle (T), devient l'ébauche cylindrique (VR ; 10, 40) à partir de laquelle peut être formé l'anneau de recouvrement sensiblement plat (20a à 20e), où la découpe le long de la ligne de séparation (T) entre la partie inférieure presque entièrement déformée et la bande cylindrique (40a) s'effectue de sorte que la bande cylindrique ne présente qu'une faible arête annulaire avançant vers l'intérieur.
  2. Procédé selon la revendication 1, dans lequel la réduction n'est effectuée qu'à un taux de 80 % à 95 %, si et jusqu'à ce que la quantité de matière nécessaire pour l'anneau de recouvrement (20a à 20e) correspond à la quantité de matière dont dispose la bande cylindrique (40a), qui n'a été déformée jusqu'à la fin, entre l'endroit de la séparation (T) et son extrémité.
  3. Procédé selon la revendication 1, dans lequel l'ébauche annulaire (40) est sensiblement cylindrique.
  4. Procédé selon la revendication 1, dans lequel l'ébauche annulaire est acirculaire.
  5. Procédé selon la revendication 4, dans lequel l'ébauche annulaire est ovale.
  6. Procédé selon l'une des revendications précédentes, dans lequel l'ébauche annulaire présente une hauteur de paroi qui s'étend nettement dans la direction axiale.
  7. Procédé selon la revendication 3, dans lequel le cylindre est acirculaire.
  8. Procédé selon l'une des revendications précédentes, dans lequel la ligne de séparation (T) suit le contour de l'ébauche annulaire.
  9. Procédé selon la revendication 8, dans lequel la découpe sur une ligne de séparation s'effectue depuis le haut ou depuis le bas.
  10. Procédé selon la revendication 9, dans lequel l'ébauche reste au-dessus ou à côté de la partie corps après la découpe.
  11. Procédé selon la revendication 1, dans lequel un traitement ultérieur de l'ébauche s'effectue dans un outil en une étape (5) ou en plusieurs étapes.
EP00107477A 1996-06-24 1997-06-20 Fabrication de collerettes a partir d'ebauches sans perte de materiel Expired - Lifetime EP1029613B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19625174 1996-06-24
DE19625174A DE19625174B4 (de) 1996-06-24 1996-06-24 Deckelringfertigung ohne Rondenverschnitt
EP97929130A EP0921878B1 (fr) 1996-06-24 1997-06-20 Realisation de bords annulaires de couvercles sans production de dechets ronds

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97929130A Division EP0921878B1 (fr) 1996-06-24 1997-06-20 Realisation de bords annulaires de couvercles sans production de dechets ronds

Publications (2)

Publication Number Publication Date
EP1029613A1 EP1029613A1 (fr) 2000-08-23
EP1029613B1 true EP1029613B1 (fr) 2009-08-26

Family

ID=7797812

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00107477A Expired - Lifetime EP1029613B1 (fr) 1996-06-24 1997-06-20 Fabrication de collerettes a partir d'ebauches sans perte de materiel
EP97929130A Expired - Lifetime EP0921878B1 (fr) 1996-06-24 1997-06-20 Realisation de bords annulaires de couvercles sans production de dechets ronds

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97929130A Expired - Lifetime EP0921878B1 (fr) 1996-06-24 1997-06-20 Realisation de bords annulaires de couvercles sans production de dechets ronds

Country Status (13)

Country Link
EP (2) EP1029613B1 (fr)
AT (2) ATE440687T1 (fr)
AU (1) AU3335397A (fr)
CZ (1) CZ293371B6 (fr)
DE (3) DE19625174B4 (fr)
DK (2) DK0921878T3 (fr)
EE (1) EE03811B1 (fr)
ES (2) ES2332700T3 (fr)
HU (1) HU223260B1 (fr)
NO (1) NO311412B1 (fr)
PL (1) PL186886B1 (fr)
PT (2) PT1029613E (fr)
WO (1) WO1997049510A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837779A1 (de) * 1998-08-20 2000-03-02 Vaw Ver Aluminium Werke Ag Verfahren zur Herstellung eines verschließbaren Behälters
DE10022553C1 (de) * 2000-05-10 2001-07-05 Rasselstein Hoesch Gmbh Verfahren zum Herstellen eines Ringteils aus Blech für einen Dosendeckel
EP1375025A1 (fr) * 2002-06-27 2004-01-02 Alcan Technology & Management AG Procédé de réalisation d' un corps de boíte et d' un bord annulaire de couvercle
ATE310596T1 (de) 2003-01-16 2005-12-15 Alcan Tech & Man Ltd Verfahren zur herstellung eines deckelringes für einen dosendeckel
DE10338445B4 (de) * 2003-08-19 2007-02-08 IMPRESS Metal Packaging S.A., Crosmières Deckelring mit geneigtem Flachsteg
ES2358873T3 (es) 2003-12-29 2011-05-16 Crown Packaging Technology, Inc Recipiente.
EP2398713A1 (fr) * 2009-02-20 2011-12-28 Crown Packaging Technology, Inc. Panneau d'extrémité métallique muni d'un orifice
SG11201401014RA (en) * 2011-04-20 2014-06-27 Crown Packaging Technology Inc Method for forming a metal closure
GB2528289A (en) 2014-07-16 2016-01-20 Kraft Foods R&D Inc A die-cut lid and associated container and method
EP4116002A1 (fr) * 2020-03-04 2023-01-11 Auxillar Conservera S.A. Procédé de fabrication conjointe de boîte métallique et son couvercle avec membrane central détachable
CN116394002B (zh) * 2023-02-23 2023-09-15 深圳市永义模具有限公司 一种成型后自动抛光的组合模具

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202057C (fr) *
FR620920A (fr) * 1926-06-04 1927-05-02 Procédé pour la fabrication de fermetures de boîtes
FR769264A (fr) * 1933-05-20 1934-08-23 Procédé de fabrication perfectionné des fermetures de boîtes métalliques, et fermetures obtenues par ce procédé
GB692399A (en) * 1951-03-28 1953-06-03 Juan Sape Roch Improvements in or relating to rings for ring spinning and doubling frames
US3787960A (en) * 1971-10-28 1974-01-29 Gen Motors Corp Process for manufacturing curved channeled members
CH629983A5 (de) * 1978-06-06 1982-05-28 Alusuisse Verfahren zur herstellung von deckelringen fuer konservendosen.
DE2933547A1 (de) * 1979-07-26 1981-03-12 Schweizerische Aluminium AG, 3965 Chippis Verfahren zur herstellung eines deckelringes und eines deckels.
CH654542A5 (de) * 1982-04-05 1986-02-28 Sandherr Packungen Ag Verschlussdeckel fuer sterilisierbare dosen.
DE3418307A1 (de) * 1984-05-17 1985-11-21 Koppy Corp., Ferndale, Mich. Verfahren zum herstellen einer duennwandigen, ringkanalfoermigen schale und vorrichtung zum durchfuehren des verfahrens
GB2237259B (en) * 1989-07-10 1993-12-08 Metal Box Plc Container closure
DE4332306A1 (de) * 1993-09-23 1995-03-30 Rasselstein Ag Verfahren zur Herstellung eines leicht zu öffnenden Dosendeckels aus Blech

Also Published As

Publication number Publication date
EP0921878B1 (fr) 2001-02-28
HU223260B1 (hu) 2004-04-28
PL330919A1 (en) 1999-06-07
DE19625174A1 (de) 1998-01-08
ES2157076T3 (es) 2001-08-01
PT921878E (pt) 2001-08-30
CZ426398A3 (cs) 1999-08-11
EE9800440A (et) 1999-06-15
DE19625174B4 (de) 2008-05-15
PT1029613E (pt) 2009-11-23
WO1997049510A1 (fr) 1997-12-31
NO986029L (no) 1999-02-24
DE59703067D1 (de) 2001-04-05
HUP9903163A3 (en) 2000-06-28
DK1029613T3 (da) 2009-12-21
HUP9903163A2 (hu) 2000-02-28
NO986029D0 (no) 1998-12-21
DE59713015D1 (de) 2009-10-08
ATE199335T1 (de) 2001-03-15
AU3335397A (en) 1998-01-14
EP0921878A1 (fr) 1999-06-16
NO311412B1 (no) 2001-11-26
PL186886B1 (pl) 2004-03-31
EE03811B1 (et) 2002-08-15
EP1029613A1 (fr) 2000-08-23
ES2332700T3 (es) 2010-02-11
ATE440687T1 (de) 2009-09-15
CZ293371B6 (cs) 2004-04-14
DK0921878T3 (da) 2001-06-11

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