EP0209890B1 - Dispositif de fermeture de récipients - Google Patents

Dispositif de fermeture de récipients Download PDF

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Publication number
EP0209890B1
EP0209890B1 EP86110048A EP86110048A EP0209890B1 EP 0209890 B1 EP0209890 B1 EP 0209890B1 EP 86110048 A EP86110048 A EP 86110048A EP 86110048 A EP86110048 A EP 86110048A EP 0209890 B1 EP0209890 B1 EP 0209890B1
Authority
EP
European Patent Office
Prior art keywords
sections
frame
flanging
retaining part
container
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
EP86110048A
Other languages
German (de)
English (en)
Other versions
EP0209890A1 (fr
Inventor
Wagner Gmbh & Co Wilhelm
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.)
Wilhelm Wagner & Co GmbH
Original Assignee
Wilhelm Wagner & Co 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
Application filed by Wilhelm Wagner & Co GmbH filed Critical Wilhelm Wagner & Co GmbH
Priority to AT86110048T priority Critical patent/ATE39894T1/de
Publication of EP0209890A1 publication Critical patent/EP0209890A1/fr
Application granted granted Critical
Publication of EP0209890B1 publication Critical patent/EP0209890B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B65B7/2857—Securing closures on containers by deformation of the closure and the container rim

Definitions

  • the invention relates to a device for closing containers according to the preamble of claim 1.
  • the crimping frame has a total of four section groups with three sections each for the four sides of a lid.
  • Each section group has a middle straight section, which is tiltably supported on a rod against spring action, whereas the other two sections (corner sections) of the individual section group serve to flare half a corner round the lid and are firmly arranged on the rod in question.
  • Each rod is fastened to an articulated web which is articulated on the upper part of the device and whose end facing away from the upper part is held in a guide of a holding part and is guided in a straight line.
  • a crimping frame divided into four sections is first moved into position with respect to an edge region of the lid placed on the container, which is angled downwards at right angles. Then the sections are moved horizontally inwards under the edge flange of the respective container by means of cam mechanisms. Then a vertical relative movement between an upper frame and the crimping frame is carried out to complete the flanging of the cover around the edge flange.
  • This sequence of movements is complex and requires precise coordination of the various individual movements that follow one another in time. In the event of contamination and wear and tear, the individual movements and their mutual coordination can become imprecise with all the disadvantages resulting therefrom, including poor flanging or even damage to the container or lid when closing.
  • all sections of the crimping frame can perform corresponding crimping movements so that the lid can be evenly crimped and pressed evenly firmly onto the edge flange of the container, so that good, uniform closure of the container can be achieved.
  • the device according to the invention is structurally simple and reliable and insensitive to contamination. It also manages with fewer sections of the crimp frame than the device according to FR-A 2 204 534.
  • the four-bar linkages are insensitive to dirt and wear-resistant due to their rotary bearings, so that even after a long period of operation, the lid can be precisely flanged around the edge flanges of the containers.
  • the relative movements of the sections of the crimp frame to the upper part bring about the flanging of the respective cover around the edge flange of the respective container, the articulated quadrilaterals making it possible in the simplest way to achieve the inward and upward movements of the sections of the crimp frame relative to the upper part without the risk of damaging the cover .
  • the four-bar linkages can advantageously be designed in the manner of parallel crank drives that can be driven to oscillate or pivot movements, i.e. the four axes of rotation of the individual four-bar linkages form the corner points of a parallelogram, the shape of which changes depending on the pivoting movements of the link bars of this four-bar linkage.
  • the parallel crank mechanism By means of the parallel crank mechanism, the section in question can be moved back and forth parallel to itself relative to the holding part on an arc-shaped path.
  • the crimping frame can preferably have a total of four sections. This is particularly useful for containers with approximately rectangular contours and rounded corners, of which an embodiment is shown in the drawing. However, depending on the shape of the container, more or fewer sections than four sections can be provided. In the case of round containers, for example, it is often useful to make do with three sections, the centers of which can be arranged offset in relation to one another by 120 ° central angles.
  • the sections can preferably be approximately the same size.
  • the containers can preferably be menu trays as are used for ready meals. However, containers of greater depth can also be provided. The containers can also be provided for other foods or other goods for which the flanging is sufficient for storage.
  • the containers can preferably be made entirely or essentially of metal, in particular aluminum minium, or also from other materials, such as plastic, metal-laminated cardboard or the like.
  • the flexible covers consist at least partially of metal tape or foil, preferably of coated or uncoated aluminum tape or foil.
  • the lids can preferably be presented to the closing device as sheets (blanks) which are still flat or as pre-formed lids, for example with the edge bent vertically downward. The lid cut is adapted to the respective container shape.
  • the cover blank is a flat sheet, which is placed on the filled container to seal it, first placed on the edge flange so that it is outstandingly flat, then the entire flanging of the area protruding beyond the edge flange of the container can be done by this sheet serving as a cover the crimp frame are carried out.
  • the movements of the sections of the crimp frame made possible by the four-bar linkage can be brought about by any suitable drive, these sections being expediently moved synchronously. However, movement sequences staggered in time are also expedient in some cases, for example if a certain folding of the cover is to be associated with the flanging.
  • a drive can act on one or more joint webs of the individual quadrangle or on the relevant section or other suitable locations. It is particularly expedient to effect this drive by at least one joint bar of the four-bar linkage having a joint rod rotatably articulated at one end, the other end of which is rotatably articulated on a pressure member that can be moved up and down relative to the holding part.
  • all these joint rods can expediently be articulated on the same common pressure member or also on separate pressure members.
  • the pressure member can be moved particularly expediently through the upper part against the action of resilient return means.
  • the translation of the movement of the upper part into a faster movement of the sections, which is required in this case, can be achieved in a simple manner by the individual joint rod being articulated on a joint web between its axes of rotation assigned to the four-bar linkage.
  • the container in question can be held in any way during the closing process. In the simplest case, it can only sit on a flat surface and be held by the upper part pressed against it. It is also possible to hold it by separate stamps, frames or the like. It can preferably be provided that the container is inserted into a centering frame, the upper edge of which rests against the underside of the edge flange of the respective container in such a way that this edge flange still protrudes on all sides sufficiently far beyond the upper edge of the centering frame for the flanging of the cover.
  • This centering frame can also be used to bring about the entire movement sequence of all parts of this device that cooperate in the closure of the respective container through the lid, namely the movement of the upper part, the four-bar linkage and, if provided, the pressure member and / or the holding part.
  • the centering frame only needs to perform a single vertical up and down movement per closing process. Instead of such a centering frame, such a vertical upward and downward movement can also be carried out by another carrier for the container. However, it is also possible to carry out the closing process by means of a vertical upward and downward movement of the holding part or a combined movement of the holding part and centering frame or the like.
  • the closing device 9 shown in the drawing is used to close bowl-shaped containers 13 which are approximately rectangular in plan view - in particular menu bowls, each of which has obliquely upward-facing side walls, rounded corners and a circumferential edge flange 14 - by means of lid 10 forming sheet-like flat lid blanks from whole or in essentially foil or tape consisting of metal, preferably by means of coated (e.g. with lacquer) or uncoated aluminum foil or aluminum tape.
  • the container 13 has an outline which corresponds approximately to the outline of the closed crimp frame 23 with the difference that it is somewhat smaller.
  • This device has the crimp frame 23 consisting of four sections 23 '. In FIGS. 1-4, only one section 23 'of this crimping frame 23 is shown, specifically cut along the section line 1-1 of FIG. 5. Sections 23' which are adjacent to one another are in relation to the sections perpendicular to the image plane of FIG. vertical center planes 41, 41 'of the horizontally standing container 13 are formed in mirror image. Each section 23 'is carried by a quadrangle 60. These quadrangles 60 are 45 ° to these planes 41 and 41 'and to the adjacent joint quadrilaterals 60 are arranged at 90 ° to each other and are formed identically among themselves.
  • a plate-shaped, horizontally directed upper part 11 is located at a distance above a centering frame 12 which can be driven upwards and downwards to vertical lifting movements.
  • This is carried by vertical rods 17, 31, which are slidably supported in bearing sleeves 18, 31 'in a straight line, which are fastened in a holding part 19 which is held stationary above the upper part 11.
  • This holding part 19 can be a plate or the like. It is also possible to provide a plurality of holding parts for the four-bar linkage 60, for example a separate holding part for each four-bar linkage 60, which can be adjusted in position to adjust the four-bar linkage concerned.
  • the outline of the upper part 11 corresponds approximately to the outline of the edge flange 14 of the container 13.
  • the upper part 11 In the open position of the closing device shown in FIG. 2, the upper part 11 is moved into its lowest position relative to the holding part 19 by a return spring 32, which is supported on the holding part 19 and presses on the upper part 11, in which an upper, protruding part , A stop forming edge bead 33 of the rod 31 rests on the bearing sleeve 31 'of the holding part 19 so that the upper part 11 cannot move further down.
  • a return spring 32 which is supported on the holding part 19 and presses on the upper part 11, in which an upper, protruding part , A stop forming edge bead 33 of the rod 31 rests on the bearing sleeve 31 'of the holding part 19 so that the upper part 11 cannot move further down.
  • an upward movement of the centering frame 12 can move it against the force of the return spring 32 up to the highest position shown in FIG. 1, in which the stop 33 is at a distance above the bearing sleeve 31 '.
  • a further sleeve 29 is also slidably mounted concentrically to it in a straight line, at the lower end of which a pressure member 28 designed as a horizontal plate is fixedly arranged.
  • This pressure member 28 can also be formed in one or more parts, in the latter case its parts can in turn be expediently adjustable in relation to one another for adjustment.
  • a vertical rod 35 is fastened to this pressure member 28, which is supported in a straight line on a bearing sleeve 35 'which is fixedly arranged on the holding part 19 and has at its upper end an edge bead 37 serving as a stop, which in the open position of the closing device on the bearing sleeve 35' to limit the downward movement of the pressure member 28 rests.
  • the pressure member is constantly loaded by a return spring 36, which is supported on the holding part 19, in the downward direction and is against the action of this compression spring 36 by the upper part 11 during its upward movement, which can be effected by the centering frame 12, up to the highest shown in FIG. 1 Position can be moved vertically upwards.
  • two mutually parallel hinge rods 26 are each rotatably supported with their lower ends about a common axis of rotation, such as 61, parallel to the four axes of rotation of the associated hinge quadrilateral 60, these two hinge rods 26 on two mutually parallel inner ones Articulated webs 22 of the relevant quadrilateral 60 are pivoted at their upper ends.
  • the axis of rotation 62 of this articulation is also parallel to the axes of rotation 63-66 of the four-bar linkage.
  • the axis of rotation 62 of the two articulated rods 26 assigned to the relevant quadrilateral 60 is located between the axes of rotation 65, 66 of this quadrilateral assigned to the articulated rods 22.
  • the upper ends of these joint webs 22 are rotatably mounted on the inner leg 51 of a U-shaped carrier 20, which is fixedly arranged on the underside of the holding part 19 (axis of rotation 65).
  • the lower ends of the two articulated webs 22 of the relevant quadrangle 60 are rotatably mounted on an upwardly directed arm 25 which is fixedly arranged on the relevant section 23 '(axis of rotation 66).
  • Extending parallel to the hinge webs 22 of the individual four-bar linkage is an equally long, straight hinge web 21, the lower end of which is rotatably articulated about an axis of rotation 64 on an arm 24 fixed to the relevant section 23 'and the upper end of which is connected to outer legs 50 of the respective one Carrier 20 is pivoted about the axis of rotation 63.
  • the distances between the axes of rotation 63 and 64 of the relevant four-bar linkage are the same as the distances between the axes of rotation 65 and 66 from one another.
  • the distances between the axes of rotation 63 and 65 of the respective four-bar linkage 60 from one another are the same as the distances between the axes of rotation 64 and 66 thereof.
  • each quadrilateral joint 60 forms a parallel crank mechanism.
  • the sections 23 'and the upper part 11 are secured relative to the holding part 19 against rotation by the quadrangles 60 and the articulated rods 26 which move them.
  • the upper part 11 forms an abutment for the edge flange 14 when the cover 10 is flanged.
  • the centering frame 12 is also secured against rotation and by a drive device, not shown, from a lowermost position, in which its upper edge 53 is located next to a support plate 61 'for the respective container 13, up to the position shown in FIG. 1 vertically movable, the support plate 61 'moving along part of this path.
  • the hinge rods 26 reach through openings in the sections 23 '.
  • This closing device works for closing containers 13 by means of lids 10 as follows:
  • the relevant container 13 filled with food or the like is applied to the support 61 ′ and then the centering frame 12 is moved upwards to center this container 13 into the position shown in FIG. 2.
  • a flat blank made of metal or a metal foil or tape having a rectangular outline will be used as the cover 10 can, placed on a circumferential curl 15 of the edge flange 14 of the container 13 so that it protrudes uniformly on all sides over the edge flange 14.
  • the upper, peripheral edge of the preferably forming a closed ring centering frame 12 then lies directly at the transition from the side wall of the container 13 into the edge flange 14 on the underside of the edge flange, so that this edge flange 14 is still considerably above the centering frame 12 in for attachment of the cover 10 by flanging around the edge flange 14 survives sufficient dimensions.
  • the centering frame 12 is moved further vertically upwards and then abuts the upper part 11, whereby the cover 10 is clamped between the edge 53 of the centering frame 12 and the upper part 11 together with the inner end of the edge flange 14 and thereby also against displacement during the further Flanging is secured.
  • This upper part 11 has on its underside a circumferential bevel 16 which is approximately as wide as the edge flange 14 of the container 13 pressed against it by the upward movement of the centering frame 12, so that the edge flange 14 is thereby removed from the horizontal position in FIG. 2 in the slightly inclined downward position shown in Fig. 3 is bent, which is favorable for the strength of the container 13.
  • this upper part 11 is moved vertically upwards by the centering frame 12 and as a result thereof is moved over the edge flange 14 protruding area of the lid 10 in the position shown in Fig. 3 bent downwards at right angles.
  • the upper part 11 is then moved together with the centering frame 12 against the force of its return spring 32 further up and then abuts the pressure member 28.
  • each section 23 'inwards and upwards which are brought about by the articulated quadrilaterals 60 and the articulated rods 26 in that the articulated rods 26 by the pressure member 28 being carried vertically upwards the upper part 11 can be moved upwards.
  • the articulated rods 26 move the articulated webs 22 and thus also the articulated webs 21 from the position shown in FIGS. 2 and 3 via the intermediate position shown in FIG. 4 to the end positions shown in FIG. 1 in a counterclockwise direction. This is done synchronously for all quadrilaterals 60.
  • This pressing takes place simultaneously through all four sections 23 '.
  • the sections 23 ' are moved up and toward one another by the four-bar linkages 60 until the wide gaps 28' originally present between them according to FIG. 5 are reduced to practically zero.
  • the sections 23 'thus practically form a closed ring which, with its crimped edges 46, lies opposite the edge flange 14 on the underside with the interposition of the flanged lid edge area and presses this lid edge area against this underside of the edge flange 14 for the purpose of firm flanging.
  • the pressing force can be adjusted by the height of the end position of the centering frame 12. The higher this end position, the greater this pressing force.
  • the upper part 11 supports the edge flange 14 against this pressing force.
  • this closing device is opened again by moving the centering frame 12 downwards.
  • the return springs 32 and 36 then push the pressure member 28 and the upper part 11 back into the positions shown in FIG. 2 with appropriate transfer of the sections 23 'into their open positions, which are also shown in FIG. 5.
  • the downward movements of the pressure member 28 and the upper part 11 are ended as soon as the stops 33 and 37 of the rods 31 and 35 come to rest on the respective bearing sleeves 31 'and 35' of the holding part 19.
  • the centering frame 12 then moves still further down to its starting position, in which the filled and now closed container 13 can be removed from the support 61 ', for example pushed further or otherwise guided away from it and a new one, not yet closed container can be applied in place on this support 61 'for the purpose of closing by a lid 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Closures For Containers (AREA)
  • Glass Compositions (AREA)
  • Refuse Collection And Transfer (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (13)

1. Dispositif pour obturer des récipients (13), en particulier des plateaux repas, lesquels présentent à chaque fois une bride de bordure (14) périphérique, avec à chaque fois un couvercle (10) pliable réalisé complètement ou bien partiellement en une bande métal ou en une feuille de métal, ce dispositif (9) présente un cadre à collet (23) subdivisé en plu- sieus sections (23') mobiles, dont les sections (23') servent à brider chaque couvercle (10) autour de la bride de bordure de chaque récipient, les sections (23') du cadre à collet (23) sont maintenues mobiles et guidées sur au moins une pièce de maintien (19), au moyen de carrés ou polygones articulés (60) présentant des barrettes articulées (21, 22), et en ce que le dispositif présente au moins une partie supérieure (11) sur laquelle chaque couvercle (10) est susceptible d'être appliqué, caractérisé en ce que les sections (23') du cadre à collet (23) sont maintenues mobiles et guidées sur au moins une pièce de maintien (19), au moyen de carrés ou polygones articulés (60) présentant les barrettes articulées (21, 22), de telle sorte que les carrés ou polygones articulés (60) permettent les mouvements d'introduction et d'avance des sections (23') par rapport à au moins une partie (11) supérieure, mouvements nécessaires au bordage.
2. Dispositif selon la revendication 1, caractérisé en ce que le carré ou polygone articulé (60) est formé comme un mécanisme à bielles parallèles capable d'un mouvement pendulaire prédéterminé.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que chaque carré ou polygone articulé (60) peut être entraîné par au moins une barre articulée (26), qui est articulée à l'une de ses extrémités avec au moins une barrette articulée (22) du carré ou polygone articulé concerné et articulé à l'autre de ses extrémités avec un organe de pression (28), l'organe de pression (28) et la pièce de maintien (19) étant à cette occasion mobiles verticalement en avant et en arrière pour réaliser le mouvement relatif des carrés ou polygones articulés (60) entre eux.
4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la pièce de maintien (19) de l'équipement est stationnaire et que la partie supérieure (11) est mobile verticalement vers le haut et vers le bas.
5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que l'organe de pression (28) est mobile relativement à la pièce de maintien (19), au moyen de la partie supérieure (11) et chargée avantageusement par un moyen à ressort de rappel (36).
6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie supérieure (11) est chargée par un moyen à ressort de rappel (32).
7. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il présente un cadre de centrage (12) pour chaque récipient (13).
8. Dispositif selon la revendication 7, caractérisé en ce que le cadre de centrage (12) présente un bord supérieur (53), qui vient en appui sur la bride de bordure (14) de chaque récipient (13) de telle sorte que cette bride de bordure dépasse encore notablement de tous les côtés au-dessus de la bride de bordure et peut être pincée entre la partie supérieure (11) et le bord supérieur du cadre de centrage (12).
9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le déroulement complet des mouvements de l'obturation de chaque récipient (13) est exécutable au moyen d'un mouvement d'avance et de recul du cadre de centrage (12) et/ou de la pièce de maintien (19).
10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie supérieure (11) présente des surfaces inclinées vers le bas, au voisinage de la bride de bordure de chaque récipient (13), qui servent au pliage du bord de la bride (14) en biais vers le bas.
11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que des moyens de guidage rectiligne (18, 29) sont disposés sur la pièce de maintien (19) pour réaliser un guidage rectiligne de la partie supérieure (11) et/ou de l'organe de pression (28).
12. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le cadre à collet (23) présente au total quatre sections (23').
13. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il est formé pour obturer des récipients (13) de profil à peu près rectangulaire ou bien quadratique avec des coins arrondis ou bien pour obturer des récipients ronds.
EP86110048A 1985-07-23 1986-07-22 Dispositif de fermeture de récipients Expired EP0209890B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110048T ATE39894T1 (de) 1985-07-23 1986-07-22 Vorrichtung zum verschliessen von behaeltern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3526312 1985-07-23
DE3526312 1985-07-23

Publications (2)

Publication Number Publication Date
EP0209890A1 EP0209890A1 (fr) 1987-01-28
EP0209890B1 true EP0209890B1 (fr) 1989-01-11

Family

ID=6276523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110048A Expired EP0209890B1 (fr) 1985-07-23 1986-07-22 Dispositif de fermeture de récipients

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EP (1) EP0209890B1 (fr)
AT (1) ATE39894T1 (fr)
DE (1) DE3661710D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9101357A (nl) * 1991-08-07 1993-03-01 Metaltech V O F Werkwijze en inrichting voor het sluiten van een verpakking.
DE102021126743A1 (de) * 2021-10-15 2023-04-20 BVM Brunner GmbH & Co. KG Seitenrandfalteinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2252927C2 (de) * 1972-10-27 1974-10-31 Eugen 7000 Stuttgart Schierle Vorrichtung zum Verschließen von Schalen mit Aluminiumfolie o.dgl
DE2935479C3 (de) * 1979-09-01 1982-02-25 HD-Ekco N.V., Genk Vorrichtung zum Verschließen eines Behälters mit einem aus plastisch verformbarem Material hergestelltenDeckel.

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Publication number Publication date
EP0209890A1 (fr) 1987-01-28
ATE39894T1 (de) 1989-01-15
DE3661710D1 (en) 1989-02-16

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