EP1583621B1 - Fixation d'une languette de manipulation avec moulure de blocage formee a partir de la surface - Google Patents

Fixation d'une languette de manipulation avec moulure de blocage formee a partir de la surface Download PDF

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Publication number
EP1583621B1
EP1583621B1 EP03808250A EP03808250A EP1583621B1 EP 1583621 B1 EP1583621 B1 EP 1583621B1 EP 03808250 A EP03808250 A EP 03808250A EP 03808250 A EP03808250 A EP 03808250A EP 1583621 B1 EP1583621 B1 EP 1583621B1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
projection
metal lid
lid according
panel
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
EP03808250A
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German (de)
English (en)
Other versions
EP1583621B2 (fr
EP1583621B8 (fr
EP1583621A2 (fr
Inventor
Hajo Rieck
Richard Chalk
Martin Gray
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.)
Ardagh Metal Packaging Germany GmbH
Original Assignee
Ball Packaging Europe GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32773135&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1583621(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE10300914A external-priority patent/DE10300914B4/de
Application filed by Ball Packaging Europe GmbH filed Critical Ball Packaging Europe GmbH
Publication of EP1583621A2 publication Critical patent/EP1583621A2/fr
Application granted granted Critical
Publication of EP1583621B1 publication Critical patent/EP1583621B1/fr
Publication of EP1583621B8 publication Critical patent/EP1583621B8/fr
Publication of EP1583621B2 publication Critical patent/EP1583621B2/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
    • 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
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0014—Action for opening container pivot tab and push-down tear panel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0068—Ribs or projections in container end panel
    • B65D2517/0071—Ribs or projections in container end panel located externally of tear-out/push-in panel or preformed opening
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/906—Beverage can, i.e. beer, soda

Definitions

  • the invention relates to a metal lid and thereby with a formation of a position fixing a grip tab on a metal cover for attachment to a hull of a beverage can, even by way of a method.
  • JP-A 09/226 762 uses a comparable projection in the area within the rivet island, whose upwardly curved edge regions (there 17) deformed by a further working step have a "press-bond" with the curved wall side of the Projection are overlapping connected to achieve a turnstile (rise along the side wall to prevent rotating of the tongue part).
  • the invention is faced with the technical problem of achieving a turnstile tab, but to improve the manufacture and reliability of the turnstile or a positional alignment of the mounted grip tab.
  • the projection may be strip-shaped (line-shaped) and preferably oriented transversely and / or parallel to a longitudinal extension of the grip tab (longitudinal axis or longitudinal plane), wherein it engages on a correspondingly aligned edge edge of the attachment portion for its blocking effect or is formed very closely adjacent , In a longitudinal extension, the projection may extend over more than 30%, preferably over more than 50% to more than 80% of the width of the attachment lobe (claim 5).
  • the longitudinal extent is shorter than the longitudinal extension of the attachment flap (rivet island) of the grip tab, preferably at a location as far as possible from the attachment point with a large distance, but only so large that at least a portion of the two edge lines at the at least one projection at a start of a rotational movement blocking is able to abut (claim 6).
  • the height extension of the at least one projection is to say that they should at least correspond to the sheet thickness of the mounting portion (claim 20, claim 21), preferably slightly to significantly higher trained to obtain a reliable positional fixation, which is not affected thereby that the grip portion is actuated or raised after the attachment portion beyond the attachment point is reliably located in a plane position to the panel portion in the vicinity of the rivet (button coin area).
  • the provision of a plurality of projections is possible, wherein not all projections must be assigned to the same outer edge section of the fastening section (claims 6 to 9).
  • the projections can also be designed differently, so strip-shaped, round to oval or combined. If a straight-line outer edge section of the attachment section is provided, a straight-line (strip-shaped) projection configuration can be advantageous.
  • the linear strip design can also be achieved by juxtaposing at least two punctiform projections, which then form a group which is assigned to the same outer edge of the attachment section.
  • the attachment portion as a fastening tab is connected via a kink area as joint line with the rest of the grip tab, so in one piece (claim 13, 11). It is thus formed between the opening portion (the insertion nose) and preferably provided with an opening handle portion.
  • the mounting portion is substantially rectangular, forms using the hinge line and three edge lines of the substantially rectangular, flat mounting portion of (claim 12).
  • this area is section square designed, the rivet head after assembly is not centered, but comes closer to the joint line to lie. Accordingly, the distance of the outwardly facing peripheral edge is greater than half the longitudinal extent of the attachment portion, so that a correspondingly improved force effect arises when a projection on the panel can be assigned to the edge furthest away from the attachment point.
  • At least one unsymmetrical in cross-section projection which is formed steeper at its flank pointing to the mounting portion than the flank remote therefrom (claim 17, 18, 19 and 23 or 24).
  • Such a design can also be selected with punctiform or oval projections.
  • a thickness reduction of an upper side of the (strip-shaped) projection (claim 23) preferably takes place. This results in solidification of this portion and the entire projection as such as well. This also applies to the method (claim 36). Simultaneously with the reshaping and the score line can be introduced in the same operation (claim 38).
  • the invention claimed here covers the formation of the projection at such a location, which is far enough away from the intended attachment point (the molded rivet or its preform) so far that the outer edge comes in the form of a rivet island facing away from the future rivet edge very close to the projection to make the turnstile effect.
  • This space is visible in the outer edge region of a Nietkopf-courtes or "Nietfußes", which remained around the formation of the rivet center from the preform of the rivet visible (claim 25 to 29, claim 33).
  • the projection as a line or strip lies at least partially outside the weakened Nietfuß Schemes in which the sheet is thin by the shape of the attachment point.
  • the edge region of this Nietfußes is addressed (claim 26), wherein preferably more than 40% of an assumed area of a strip-shaped projection outside the Nietfuß Schemees are (claim 27).
  • a strip shape is provided as a projection, it can be made larger in its length than the diameter of the finished rivet head.
  • the attachment portion is formed from one piece of the center region of the grip tab, there are only slight visible gaps between the mounted over a double fold line down to a lower level mounting portion and the slightly above parallel plane of the remaining grip tab.
  • the attachment of the projections on at least one of the free, from the attachment portion facing outward marginal edges is therefore difficult or difficult to see from the outside, so that the rotation block is almost invisible to the viewer.
  • a possibly color-coded grip tab is not changed further in its colored form.
  • the sheet-metal lid resulting in FIGS. 1 to 3 is evidently provided with an edge section 12 which is suitable for folding onto a beverage can body.
  • the sheet metal lid itself is made of a sheet of small thickness, usually less than 0.24 mm, and has already gone through previous workstations, before Figure 1 represents him. It has an inner lid mirror (panel) 10, which is surrounded by the seam edge 12. Within the lid mirror 10, a line of weakness 16 is provided around an opening area which is surrounded by a substantially U-shaped bead 18.
  • the substantially O-shaped weakening line 16 is designed as a score, which has a transition portion which is not notched and thus serves as a connecting portion to the rest of the panel 10 when the Opening portion 17 is broken by action of a later mentioned grip tab, along the score line 16th
  • an attachment point 11 is provided, which can be seen later in the enlarged detail later. It is associated with a mounting portion as a sheet metal tabs 31 schematically, which is part of the grip tab of Figure 3, where it is formed integrally via a joint line as a bending line 38.
  • This grip tab 30 has a handle portion 32, here provided with a circular opening at which the handle tab is actuated by the user, for breaking the score line 16 of Figure 1.
  • the handle tab 30 also has an opening portion 33 in front of the attachment portion 31, which acts as a nose is located above the Einbrechabites 17 for collapsing 17, for which purpose in Figure 2 in one step, an additional bead form 18a is provided as an augapfelförmige bead which reinforces the transverse LOE opening area to the opening forces on the burglary starting section (arcuate end of the score line 16 ) to raise.
  • the arranged grip tab 30 is substantially parallel to the panel, which itself need not be formed exactly in a plane, but may be slightly curved, but the area around the attachment point 11 is substantially planar and here allows a substantially parallel arrangement of the attachment tab 31 of the pull tab 30.
  • longitudinal center plane 100 is shown, which extends in the direction of the longitudinal extent of the grip tab 30.
  • a transverse plane 101 is perpendicular thereto.
  • the grip portion 32 of the grip tab engages over the finger recess 13, which is approximately the same distance as the inner reinforcing rib 18a is mounted on the other side of the attachment point 11 in the panel 10.
  • the grip tab is attached in the course of the formation of the finished metal cover only in the figure 3.
  • the attachment point is first formed as a bubble in order to attach the attachment portion 31 of the handle tab 30 to the panel can.
  • three strip-shaped projections are formed as beads projecting upwards (ie to the outside of the sheet metal cover).
  • the bead 20 lying transversely to the center plane 100 is longer than the two adjacent beads, which run parallel to the center plane 100. They are illustrated in FIG. 4 with 21a, 21b, in which the longer bead 20 is shown more precisely in relation to the attachment tab 31 there.
  • the attachment tabs 31 is shown in Figure 1 only to illustrate the distances of the beads of the attachment point 11, but is not yet here on the sheet metal cover.
  • the shape of the three beads 20,21a, 21b is improved or made more accurate. This "reforming” leads to a formation of the beads (projections), as used later for the positional fixing of Figure 3 and the figures described below. In this station, these projections receive their correct profile geometries after they have been integrally molded out of the cover sheet (the panel) and extend in the height direction h at least at a height corresponding to the sheet thickness of the attachment portion 31 of the grip tab 30.
  • this pull tab 30 is added, is placed over the rivet shank, which is formed in a molding operation with a rivet head, wherein it is shown larger in diameter than in the preceding Figures 1 and 2.
  • Nietkopf With this Nietkopf Struktur the grip tab 30 am Panel attached and that via the mounting portion 31 which is connected via the bending line 38 with the remaining handle tab 30.
  • the opening portion 33 lies above the break-in portion within the score line 16, close to the additional stiffening bead 18a.
  • the handle tab 30 should not be able to move in a direction of rotation, which is designated in Figure 4 with ⁇ .
  • the front nose end of the opening portion 33 would be moved away from the exact location intended to ensure the breaking force, the tearing and the subsequent complete opening of the opening portion 17. It is desirable according to Figure 4 so, the movement ⁇ so low to design as possible, preferably even to stop completely.
  • three strip-shaped projections 21a, 21b and 20 were provided in Figures 1, 2 and 3, which are the three free marginal edges 31 a, 31 b, 31 c of the attachment portion 31 of the handle portion 30 assigned.
  • a small gap 21 ', 21 "and 20' can remain between the respective outwardly facing edge and the respective inner edge of the respective projection, for example. 31 c of 20" in the projection 20.
  • the gap can also on at least one of outwardly facing edges of the attachment portion 31 may be reduced to zero.
  • the width of the attachment portion 31 is designated by "b", so that the minimum distance of the two lying parallel to the longitudinal center plane 100, formed as beads projections 21b, 21a have this measure with their inner edges 21b 'and 21a' as a distance.
  • the longitudinal extent of the mounting portion 31 in the plane 100 extends over the rivet head as an attachment point 11. It can be seen that the length of the two beads 21 a, 21 b is shorter than half the longitudinal extent of the attachment piece 31, and that this so far are displaced as possible in the rear region of the mounting portion to apply the maximum possible force for a positional fixation with an assumed rotational movement ⁇ .
  • one or more of the three described strip-shaped beads can be omitted.
  • a geometry with only one projection 20 is possible, as illustrated in FIG .
  • the pivotal movement ⁇ is thus limited, completely prevented, or at least two limit values are predetermined, which are predetermined by striking at an assumed rotational movement ⁇ (in both directions about the axis of the rivet 11).
  • the pivoting movement is essentially in the plane in which the panel is in the range located around the rivet head 11, which plane is also maintained plane-parallel of the attachment portion 31 which extends flat here.
  • the portion 31 has two parallel marginal edges or edges 31b, 31a and a remote from the hinge line 38, and their parallel edge edge 31 c.
  • the attachment portion in the form of an arcuate shape, triangular shape or with a not straight extending peripheral edge 31 c.
  • FIG. 5 also shows a cross section in FIG . 5 a, which is laid through the longitudinal plane 100.
  • This illustration shows the described situation for only one projection 20, which cooperates with the marginal edge 31c of the attachment section 31, to avoid function-impairing rotational movements ⁇ .
  • the formation of the rivet head is to be seen as an attachment point 11 through an opening of the attachment portion 31 therethrough.
  • the asymmetry transverse to the longitudinal extension of the projection 20 illustrates the figure 8, based on the projection 20, which is the peripheral edge 31 c of the attachment portion 31 associated. Due to the double deformation, the first molding of Figure 1 and the second reforming of Figure 2 can be a very steep Leading edge 20 "or 20a are formed, a very high height h (relative to the plate thickness), and the cover plate still remain undamaged, which also helps that the projection is as far away from the sensitive area of the Niethofes 11 a by the sharp leading edge 20a (or 20 "of FIG.
  • FIG. 8a This is illustrated in FIG. 8a, in which a realization is shown in section, wherein the section extends in the longitudinal direction, as defined by the longitudinal center plane 100, for example from the representation of FIG. 5 and-practically realized-the schematic representation according to the FIGURE 8 accordingly.
  • FIGS. 4, 5 and 8 designate the corresponding sections and parts there, they are taken over into the realization according to FIG. 8a, here into the lower illustrated field.
  • the upper illustrated field forms a preform 20 * which is formed in a two-stage manufacturing process prior to the second step (post-forming).
  • FIG. 8a In a first embodiment according to, for example, FIG.
  • the preform 20 * which has a rather wall-shaped structure, is formed from the panel 10 with two flat bevels and a strongly rounded middle section. 2, the much steeper leading edge 20 "(according to FIG. 4) or 20a according to FIG. 8 is obtained, the cover sheet nevertheless remaining undamaged It is understood that in both the upper and the lower field of the strip-shaped projection 20 extends perpendicular to the paper plane, in a transverse plane 101, which is perpendicular to the longitudinal center plane 100.
  • This transverse plane 101 is a relative indication of the position of Preform 20 *, in which there is a symmetry of the initially formed preform from the cover plate to the plane 101, which is then left at the post-forming, as the finished projection 20 shows that in the lower half, in which he no longer symmetrical to the transverse plane 101th is located.
  • the following explanations refer to the lower field.
  • the rivet 11 which is used to attach the attachment portion 31 on the cover plate 10.
  • the rear end 31 c of the attachment portion 31 is the marginal edge, which is the front edge 20 "of the projection 20 associated with, where appropriate, leaving a narrow gap 20 ', as explained with reference to Figure 4.
  • Die Unbalance with a sharp front edge 20 "(or 20a) and a flatter, outwardly facing edge 20b characterizes the projection 20.
  • the reshaping involves shaping reshaping the preform 20 * with a coining (embossing process) to flatten the surface 20c more strongly.
  • a coining embssing process
  • the tool is used equally from above and from below for training. It can be seen from the left in the rising edge of the preform 20 * recognizable slight kink in the lower final shape again, which also shows how the sharp leading edge 20 "is introduced into the first flat rising front slope of the molded wall 20 * To the right of the transverse plane 101, the second slope of the wall is formed from below to above, to form a flat shape 20c starting approximately at the instep of the wall 20 *, which smoothly leads into the remaining cover plate 10 in the area 20b.
  • the attached attachment portion 31 and also the attached tab 30 according to FIG. 3 are already arranged in the finished form, also in a sectional view.
  • the tab lies with its intermediate web between the left opening and the handle opening 32b substantially above the transverse projection 20.
  • the two openings of the tab are shown in Figure 3, an opening is formed by the formation of the attachment portion 31, via the hinge line 38th
  • the grip tab 30 in communication, while the opening for the engagement of a finger is specially formed.
  • This opening 32b is part of the grip portion 32, wherein the web 32a lying between the two openings is shown slightly curved in FIG. 8a, with a front edge 32c which was related to the free edge 31c of the attachment portion 31 during manufacture.
  • a large part of the projection 20 is thus below the bridge and is hardly noticeable from the outside.
  • the two-stage training in addition to the order of processing according to the figures 1 to 3, a modified order are made, so first the introduction of the preforms, as explained with reference to the preform 20 * of the upper half of Figure 8a, in one first Operation, still without the introduction of scoring or score lines (as lines of weakness), as the line of weakness 16 is one.
  • scoring or score lines as lines of weakness
  • the introduction of the first score line then takes place together in one operation, which takes over the reshaping (further forming) of the preformed protrusions.
  • the projections receive the correct, their assigned profile, as explained in the lower half of Figure 8a, this profile can be transferred not only to the transverse projection 20, but also to the other projections, as far as in the previous operation as preforms were trained. It can thereby be achieved that a notching process which greatly stresses the sheet metal does not already take place when the cover sheet undergoes a heavy loading of the preform in the first operation.
  • reshaping the insertion of the score line can be made at the same time.
  • the wall thickness on the upper side of the projection is reduced by approximately 10% to 15%, with concomitant compaction and solidification of this area, which results from the embossing process (coining) from above and below is reached.
  • Figure 6 shows an attachment of two substantially point-shaped projections 23a, 23b on the longitudinal sides 31a, 31b of the attachment portion 31. Additionally or alternatively, a projection 22 may be provided on the transverse edge 31c of the attachment portion 31. The projection 22 may be elongated to oval and also formed substantially round.
  • FIG. 7 illustrates a group of protrusions associated with a single outer edge (outwardly facing edge line) of the attachment portion 31.
  • This group 24 of here three individual, substantially point-shaped projections are associated with the outer edge 31 c, but may also be associated with the two other marginal edges 31 a and 31 b. Only two punctiform projections can be used in FIG. Likewise, the asymmetrical shape of the upwardly shaped projections according to Figure 4a or Figures 5a or 8a can be transferred to these embodiments.
  • the at least one projection is associated with a peripheral edge 31c lying transversely to the longitudinal plane 100 of the attachment tab 30, rotational movement in both directions can be prevented with only a single projection, if this projection extends at least on both sides of the median plane.
  • a projection selected which is assigned to a peripheral edge extending parallel to the longitudinal plane 100, at least two projections on two edges available to this extent are to be provided as "stop edges" for a symmetrical limitation of rotational movements of the grip tab 30.
  • All the projections described are arranged outside the attachment portion 30 so that they can cooperate with at least one of their respective outer peripheral edges (edge) locking.
  • FIGS. 9a and 9b The effect of the torques is illustrated in FIGS. 9a and 9b . It is assumed with a view from above of the mounting portion 31 that this is arranged on the attachment point 11 (usually a rivet head) on the panel 10. Schematically, a parallel to the center plane 100 of the tab (the handle tab 30) lying lateral projection 21a is drawn, which is loaded with a force by an assumed rotation in the direction of ⁇ . With an assumed length I of the attachment portion 31, the attachment point 11 is closer to the hinge line 38 than to the rear end 31c of the attachment portion 31, so that an effective force arm I 1 is greater than half the length I of the attachment portion 31. Due to the placement of the line or strip-shaped projection 21 a near the rear edge line 31 c, a force on a large lever arm can apply a large torque to lock (blocking torque) to prevent rotation.
  • the corresponding force via the lever arm b1 is applied by the projection 20 or its front edge 20a (edge 20 "in Figure 4) .
  • the corner of the mounting portion 31 is slightly rounded, not the entire half width can be provided as a lever arm but between 70% and 100% of b / 2, essentially in the range between 80% and 90%.
  • FIG. 10 illustrates a thinned area visible around the rivet head 11 from inside the metal lid.
  • This rivet base portion 11a is a portion that after the second forming of the rivet head 11 on the outer side remains, usually visible through circular lines around the center of the rivet as attachment point 11 around.
  • This "button coin area” is not strong load, after it is thinned out of the sheet thickness by the shaping of the rivet to the outside.
  • the attachment section 31 is shown by dashed lines, not to scale, in order to clarify the relation of the position of the "Coin Area".
  • the two lateral projections 21 a, 21 b may be provided here, which are then placed near the periphery of the Nietfußes and are not placed in the vulnerable thinned area near the rivet head ,
  • a more accurate dimensioning of the surfaces shows that the strip-shaped projection 20 is situated at least partially outside the rivet foot area (Coin Area) and here the outer periphery area 11b.
  • the relocation is at least 40% of the area f 20 , which is no longer in the periphery 11 b of the Nietfußes 11 a, but outside.
  • this location and the location and extent of the Coin Area can be seen easily from the inside of the tin lid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Closures For Containers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Package Frames And Binding Bands (AREA)

Claims (40)

  1. Couvercle de tôle pour fermer un corps de boite, comprenant une plaque ou flan de couvercle (10) et une bordure de sertissage (12) entourant ce flan de couvercle et apte à être rapportée sur le corps de boite, couvercle de tôle dans lequel
    - sur le flan de couvercle (10) est définie par une ligne d'affaiblissement (16), une zone prévue pour l'ouverture, et en-dehors de la zone d'ouverture (17) est agencée une languette de manipulation (30 ; 31, 32, 33) en un point de fixation (11) ;
    - la languette de manipulation (30) présente un tronçon de préhension (32), un tronçon d'ouverture (33) et un tronçon de fixation (31), ce dernier étant prévu pour la fixation de la languette de manipulation sensiblement parallèlement par rapport au flan de couvercle (10), la languette de manipulation (30), dans l'état fixé, venant s'appliquer par son tronçon d'ouverture (33) au-dessus de la zone d'ouverture (17) pour pouvoir faire basculer le tronçon de préhension vers le haut le long d'une ligne d'affaiblissement ou d'articulation, pour produire la rupture et l'enfoncement de la zone d'ouverture (17) ;
    - le tronçon de fixation (31) présente une étendue en surface qui est plus petite qu'une étendue de la languette de manipulation (30) ;
    - caractérisé en ce qu'à l'extérieur de l'étendue du tronçon de fixation (31) est agencé au moins un arrêt (20 ; 24a ; 23a, 23b ; 22) pour prescrire ou limiter un mouvement de pivotement (α) maximal possible de la languette de manipulation (30).
  2. Couvercle de tôle selon la revendication 1, dans lequel est formée en relief dans le flan de couvercle (10), au moins une protubérance (20, 21a, 21b ; 23a, 24a) en guise d'arrêt, en vue de limiter ou de bloquer un pivotement de la languette de manipulation (30) par un appui de contact sur au moins un bord extérieur (31c, 31a, 31b) du tronçon de fixation (31).
  3. Couvercle de tôle selon la revendication 1, dans lequel à proximité d'au moins un bord (31c) du tronçon de fixation (31), est formée en relief dans le flan de couvercle (10), au moins une protubérance (21a, 21b ; 20) en forme de bande en guise d'arrêt, pour limiter un mouvement de pivotement de la languette de manipulation (30) autour du point de fixation (11).
  4. Couvercle de tôle selon la revendication 1, dans lequel à l'extérieur du tronçon de fixation (31), il est prévu sur le flan de couvercle (10) au moins une protubérance comme étant l'arrêt (21a, 21b ; 20 ; 22 ; 24), d'une façon telle qu'un mouvement de pivotement (α) sensible de la languette de manipulation (30) dans un plan parallèle au flan de couvercle soit bloqué, la protubérance ayant notamment une longueur représentant plus de 80% de la largeur (b) du tronçon de fixation.
  5. Couvercle de tôle selon l'une des revendications précédentes, dans lequel l'arrêt (20, 22) s'étend sur au moins 30%, de préférence sur au moins 50% d'une largeur (b) ou d'une longueur (1) du tronçon de fixation (31).
  6. Couvercle de tôle selon l'une des revendications précédentes, dans lequel en guise d'arrêt, plusieurs protubérances (20, 22, 23a, 23b, 24) sont prévues à proximité du bord (31a, 31b, 31c) du tronçon de fixation (31), notamment au moins une protubérance (21a, 21b) étant orientée dans une direction longitudinale de la languette de manipulation (30) en ayant une longueur qui ne représente pas plus de 50% d'une étendue en longueur (1) du tronçon de fixation (31), notamment en combinaison avec un éloignement de l'extrémité extérieure de la protubérance (21a, 21b) du milieu du point de fixation (11) de plus de 50% de l'étendue en longueur (1) du tronçon de fixation (31).
  7. Couvercle de tôle selon la revendication 6, dans lequel parmi lesdites plusieurs protubérances, l'une au moins (20, 21a, 21b, 22) est réalisée sous forme de ligne ou de bande, la protubérance ou l'arrêt ayant notamment une largeur plus grande que la hauteur (h) et une longueur nettement plus grande que la largeur.
  8. Couvercle de tôle selon la revendication 6, dans lequel l'une au moins des plusieurs protubérances est ronde à ovale (22, 24a, 23b).
  9. Couvercle de tôle selon la revendication 4 ou 7, dans lequel sont prévues plusieurs protubérances (20, 21a, 21b) en forme de bande, dont deux protubérances (20, 21a ; 20, 21b) ne présentent pas une orientation identique, notamment plusieurs protubérances étant agencées à proximité de plusieurs bords faisant office de tronçons de bordure (31a, 31b, 31c) du tronçon de fixation (31).
  10. Couvercle de tôle selon l'une des revendications précédentes, dans lequel il est produit par l'arrêt, une limitation d'un mouvement de pivotement (α) de la languette de manipulation dans un plan sensiblement parallèle au flan de couvercle (10), par butée sur au moins une protubérance (2).
  11. Couvercle de tôle selon l'une des revendications précédentes, dans lequel l'arrêt est agencé en tant que protubérance entre le tronçon de préhension (32) et le tronçon d'ouverture (33) de la languette de manipulation sur le flan de couvercle (10).
  12. Couvercle de tôle selon l'une des revendications précédentes, dans lequel le tronçon de fixation (31) est sensiblement de configuration rectangulaire, notamment d'une configuration carrée, et présente au moins trois tronçons de bordure extérieure (31a, 31b, 31c).
  13. Couvercle de tôle selon l'une des revendications précédentes, dans lequel le tronçon de fixation est relié par l'intermédiaire d'une ligne d'articulation (38) avec le restant de la languette de manipulation (30), de sorte que, lors d'un actionnement du tronçon de préhension (32), le tronçon d'ouverture (33) peut être basculé sensiblement perpendiculairement à un plan du flan de couvercle (10).
  14. Couvercle de tôle selon la revendication 13, dans lequel le mouvement de basculement, en tant que pivotement vertical, produit une ouverture de la zone d'ouverture (17) le long de la ligne d'affaiblissement (16).
  15. Couvercle de tôle selon l'une des revendications précédentes, dans lequel l'arrêt ou blocage de pivotement reste également conservé lors d'un mouvement de basculement vertical de la languette de manipulation (30).
  16. Couvercle de tôle selon la revendication 6 ou 9, dans lequel les plusieurs protubérances sont agencées de façon telle que , lors d'un pivotement horizontal de la languette de manipulation (30), respectivement l'une agit sur un autre de plusieurs tronçons de bordure extérieure (31a, 31b, 31c) du tronçon de fixation.
  17. Couvercle de tôle selon l'une des revendications précédentes, dans lequel au moins une protubérance (20) en tant qu'arrêt, présente une section transversale qui, notamment dans une direction orientée transversalement à son étendue longitudinale (100), est de configuration non symétrique (20", 21a').
  18. Couvercle de tôle selon la revendication 17, dans lequel la configuration non symétrique comprend un flanc plus pentu et un flanc moins pentu (21b', 21b'', 20a, 20b), qui ne s'étendent pas parallèlement l'un à l'autre, et dans lequel notamment ladite au moins une protubérance (20) est d'une configuration aplatie (20c) sur son côté supérieur, en étant de préférence réduite quant à son épaisseur de paroi.
  19. Couvercle de tôle selon la revendication 18, dans lequel le flanc le plus pentu (21b', 20a) est situé plus près d'un tronçon de bordure extérieure (31b, 31a, 31c) associé du tronçon de fixation, que le flanc moins pentu de la même protubérance.
  20. Couvercle de tôle selon l'une des revendications précédentes, dans lequel en guise d'arrêt au moins une protubérance (20 ; 21a ; 21b) présente une hauteur (h) qui est supérieure à 300 µm, mesurée à partir d'un côté supérieur du flan de couvercle (10), dirigé vers l'extérieur, autour de la protubérance.
  21. Couvercle de tôle selon la revendication 20, dans lequel la hauteur (h) est sensiblement adaptée à une hauteur, à savoir l'épaisseur de la tôle du tronçon de fixation (31), en vue d'obtenir un arrêt ou blocage d'un mouvement de pivotement du tronçon de fixation (31).
  22. Couvercle de tôle selon la revendication 21, dans lequel la hauteur (h) de ladite au moins une protubérance (20 ; 21a, 21b) n'est pas plus petite que sensiblement l'épaisseur de la tôle au niveau du tronçon de bordure extérieure (31a, 31b, 31c) du tronçon de fixation (31).
  23. Couvercle de tôle selon l'une des revendications précédentes, dans lequel en guise d'arrêt, au moins une protubérance est formée dans le flan de couvercle (10) par un premier formage, puis est amenée dans sa configuration définitive par une reprise de formage, une réduction d'épaisseur d'un côté supérieur (20c) de la protubérance (20) ayant eu lieu lors de cette reprise de formage.
  24. Couvercle de tôle selon la revendication 23, dans lequel parmi deux flancs plus longs (21b', 21b'') de la protubérance, l'un d'entre eux est ou a été réalisé plus pentu lors de la reprise de formage.
  25. Couvercle de tôle selon l'une des revendications précédentes, dans lequel en guise d'arrêt, au moins une protubérance (20) est placée dans une zone périphérique (11b) d'une zone d'embase de rivetage (11a) dans la tôle de couvercle, visible à partir du côté intérieur.
  26. Couvercle de tôle selon la revendication 25, dans lequel une partie de la protubérance (20) est située à l'extérieur de la zone d'embase de rivetage (11a).
  27. Couvercle de tôle selon la revendication 25, 26, dans lequel plus de 40% d'une surface (f20) de ladite au moins une protubérance est située en-dehors de la zone d'embase de rivetage (11a).
  28. Couvercle de tôle selon la revendication 26 ou la revendication 27, dans lequel la zone d'embase de rivetage (11a) s'étend de manière annulaire autour du rivet (11) en tant que point de fixation, visible à partir du côté intérieur.
  29. Couvercle de tôle selon la revendication 25 ou 28, dans lequel la protubérance est placée à la manière d'une sécante pouvant aller jusqu'à une tangente, sous forme de bande ou de ligne, dans la zone de bordure (11b) de la zone d'embase de rivetage.
  30. Couvercle de tôle selon la revendication 1, dans lequel le flan de couvercle (10) présente en guise d'arrêt, au moins une protubérance (20, 21a, 21b, 23a, 24, 22) qui s'étend vers le haut à partir du flan de couvercle (10) et réalise une arête de blocage avant (21b', 21a', 20"), pour au moins limiter une rotation (α) horizontale de la languette de manipulation (30) en tant qu'ensemble complet, deux arêtes de blocage étant notamment réalisées sensiblement de manière parallèle à un plan longitudinal (100) qui s'étend le long de la longueur de la languette de manipulation (30).
  31. Couvercle de tôle selon la revendication 30, dans lequel l'arête de blocage avant (20") est linéaire, et le tronçon de fixation (31) prend une position plane par rapport au flan de couvercle (10).
  32. Couvercle de tôle selon la revendication 30, dans lequel l'arête de blocage avant s'étend sur plus de la moitié d'une largeur, ou au moins 30% de la longueur (1) du tronçon de fixation (31) plat.
  33. Couvercle de tôle selon la revendication 30, dans lequel l'arête de blocage avant (20", 20a) est orientée sensiblement de manière perpendiculaire à un plan longitudinal (100), qui s'étend le long de la longueur de la languette de manipulation (30), la protubérance étant notamment réalisée par formage hors du flan de couvercle, dans une zone qui correspond à une périphérie d'une zone d'embase de rivetage ou d'une zone de matriçage (11a) autour du point de fixation (11).
  34. Couvercle de tôle selon la revendication 30, dans lequel la protubérance (20, 21a, 21b) est ou a été réalisée par au moins deux formages, une fois pour réaliser une zone de blocage avant à partir d'un tronçon du flan de couvercle (10), et une fois pour une reprise de formage de la zone de blocage en ou vers une configuration qui, en tant qu'arête de blocage est plus pentue ou plus vive que la zone de blocage formée auparavant.
  35. Couvercle de tôle selon la revendication 9 ou la revendication 6, dans lequel sont prévues trois protubérances (21a, 21b, 20) dont deux sont sensiblement parallèles à l'axe longitudinal (100) de la languette de manipulation, et l'une (20) est orientée sensiblement perpendiculairement à celles-ci.
  36. Procédé de formage d'un couvercle de tôle d'après lequel au moins une protubérance (20, 21a, 21b) est obtenue par un double formage dans le flan de couvercle (10), une fois pour former à partir du flan de couvercle (10), une préforme (20*) de la protubérance, cette préforme étant placée à proximité d'un point de fixation (11) pour la languette de manipulation, et une fois pour une reprise de formage destinée à former un bord avant (20", 21b') de ladite au moins une protubérance, en vue d'obtenir un arrêt ou blocage pour un tronçon de bordure extérieure (31c) associé, du tronçon de fixation.
  37. Procédé pour un couvercle de tôle selon la revendication 36, d'après lequel on effectue une réduction de l'épaisseur de tôle de la protubérance par une opération de matriçage.
  38. Procédé selon la revendication 36, d'après lequel le formage d'une ligne d'entaillage (16) dans le flan de couvercle (10) est effectué chronologiquement après le formage de la préforme (20*) de ladite au moins une protubérance (20).
  39. Procédé selon la revendication 36, d'après lequel la reprise de formage comprend un matriçage à l'aide duquel un côté supérieur (20c) de la préforme de la protubérance (20) est aplati et rigidifié.
  40. Procédé selon la revendication 39, d'après lequel la rigidification est obtenue par une réduction de l'épaisseur de tôle d'au moins 10%.
EP03808250A 2003-01-13 2003-12-23 Fixation d'une languette de manipulation avec moulure de blocage formee a partir de la surface Expired - Lifetime EP1583621B2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10300914 2003-01-13
DE10300914A DE10300914B4 (de) 2003-01-13 2003-01-13 Lagefixierung einer Grifflasche an einem Getränkedosen-Blechdeckel und Verfahren zum Ausformen dieses Deckels
DE10319971A DE10319971A1 (de) 2003-01-13 2003-05-05 Lagefixierung einer Grifflasche mit einer aus dem Panel ausgeformten Sperrsicke
DE10319971 2003-05-05
PCT/DE2003/004283 WO2004065034A2 (fr) 2003-01-13 2003-12-23 Fixation d'une languette de manipulation avec moulure de blocage formee a partir de la surface (moulure anti rotation)

Publications (4)

Publication Number Publication Date
EP1583621A2 EP1583621A2 (fr) 2005-10-12
EP1583621B1 true EP1583621B1 (fr) 2006-08-30
EP1583621B8 EP1583621B8 (fr) 2007-03-07
EP1583621B2 EP1583621B2 (fr) 2010-10-20

Family

ID=32773135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03808250A Expired - Lifetime EP1583621B2 (fr) 2003-01-13 2003-12-23 Fixation d'une languette de manipulation avec moulure de blocage formee a partir de la surface

Country Status (10)

Country Link
US (1) US7926675B2 (fr)
EP (1) EP1583621B2 (fr)
AT (1) ATE337866T1 (fr)
AU (1) AU2003303755A1 (fr)
BR (1) BR0317990B1 (fr)
DE (2) DE10319971A1 (fr)
HK (1) HK1078517A1 (fr)
PL (1) PL202694B1 (fr)
RU (1) RU2340523C2 (fr)
WO (1) WO2004065034A2 (fr)

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Also Published As

Publication number Publication date
BR0317990A (pt) 2005-12-06
US20070062950A1 (en) 2007-03-22
DE10319971A1 (de) 2005-01-27
DE50306412D1 (de) 2007-03-15
US7926675B2 (en) 2011-04-19
BR0317990B1 (pt) 2014-09-02
AU2003303755A8 (en) 2004-08-13
RU2005125734A (ru) 2007-02-20
ATE337866T1 (de) 2006-09-15
WO2004065034A3 (fr) 2004-09-16
WO2004065034A2 (fr) 2004-08-05
EP1583621B2 (fr) 2010-10-20
PL202694B1 (pl) 2009-07-31
EP1583621B8 (fr) 2007-03-07
HK1078517A1 (en) 2006-03-17
EP1583621A2 (fr) 2005-10-12
RU2340523C2 (ru) 2008-12-10
PL376345A1 (en) 2005-12-27
AU2003303755A1 (en) 2004-08-13

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