EP0564345A1 - High-speed apparatus for crimping tins - Google Patents

High-speed apparatus for crimping tins Download PDF

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Publication number
EP0564345A1
EP0564345A1 EP93400804A EP93400804A EP0564345A1 EP 0564345 A1 EP0564345 A1 EP 0564345A1 EP 93400804 A EP93400804 A EP 93400804A EP 93400804 A EP93400804 A EP 93400804A EP 0564345 A1 EP0564345 A1 EP 0564345A1
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EP
European Patent Office
Prior art keywords
chamber
rod
elements
crimping
mandrel
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.)
Granted
Application number
EP93400804A
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German (de)
French (fr)
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EP0564345B1 (en
Inventor
Jean-Charles Marchadour
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Hema Technologies SA
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Hema Technologies SA
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Publication date
Application filed by Hema Technologies SA filed Critical Hema Technologies SA
Publication of EP0564345A1 publication Critical patent/EP0564345A1/en
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Publication of EP0564345B1 publication Critical patent/EP0564345B1/en
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    • 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 present invention relates to a device for crimping the lid of cans, comprising a crimping head and a compression foot intended to support the body of a can on which a lid has been placed and pressing the latter on the box body, by pushing the box against a fixed mandrel with a determined force, throughout the crimping operation;
  • the compression foot is fixed to the end of a first element of a telescopic rod which extends along an axis perpendicular to the load-bearing surface provided by the compression foot and comprises two elements which can slide, one with respect to the other, with which is associated a spring which tends to separate them from each other, while the second element is coupled to a motor means capable of imposing on it an alternating movement of longitudinal translation between two defined extreme positions, namely a rest position, remote from the aforementioned mandrel, and a working position causing the compression of the cover on the box body by the mandrel via said spring, the first element of the rod and the compression foot.
  • the role of the compression foot is to press the cover on the box body with more or less force during the crimping phase, during which the edge of the cover is rolled around the edge of the box body, then crushed in order to '' obtain a sealed connection by peripheral crimping.
  • the pressure exerted on the cover has a decisive influence on the quality of the crimping roll produced along the edge of the cover. It must have a constant value well determined for a given type of box; too low or too high a pressure leads to faulty crimping.
  • the compression foot is supported on the aforementioned second element, serving as a control member, by means of the spring, the assembly performing an alternating movement all the more rapid as the rate of crimping is high.
  • the spring is biased at each stroke of the assembly in the direction of the crimping box, due to the inertia of the compression foot and the first element to which it is fixed; as it only correctly exerts the pressure required for crimping when it is stabilized, it can be seen that the degree of compression differs from the desired value, all the more so as the rate increases, especially if the crimp boxes are of a type requiring a small compressive force, therefore a relatively weak spring (this is the case for example of thin-walled light alloy boxes).
  • the present invention aims to overcome this incompatibility. To this end, it is provided, according to the invention, to provide the telescopic rod with temporary mutual locking means of its two constituent elements, which keep them immobilized relative to one another in a relative position where the spring is in a determined state of prestressing, and this during most of the stroke of the first element in the direction of the mandrel, then, shortly before the end of this stroke, release the second element from the first element, which then produces the compression of the cover on the box body under the sole effect of the force developed by the spring under said prestressing, whatever the more or less low value thereof.
  • the stroke of the support rod of the compression foot is subdivided into two parts: a first part where the two elements of the rod, locked together, behave like a single piece, so that the compression foot performs faithfully the movement imposed by the motor means, whatever the amplitude of the acceleration impressed by it, and this without the spring being in any way requested. Then, in a second part, which corresponds to the end of travel of the compression foot, the first element dissociates from the second, on which it no longer depends except by through the spring. This then plays its role by exerting the desired compression force on the cover to be crimped.
  • the locking means of the two elements of the telescopic rod comprise a chamber delimited by walls belonging respectively to one and to the other of these elements, the internal volume of which is directly determined by the position mutual of these when they slide relative to each other, and a stop means which determines the situation of maximum extension of the rod;
  • the chamber is permanently connected to a source of pressurized liquid and, but only when the rod will reach its end-of-travel position in the direction of the mandrel, to a path for discharging this liquid out of the chamber.
  • the liquid filling the chamber forms an incompressible hydraulic cushion trapped between the two elements, which it rigorously secures, the two elements being suddenly released from this connection as soon as the liquid can escape from the chamber.
  • This can be connected to the source of pressurized liquid by a pipe comprising a non-return valve, which prevents, during the compression phase, any return of the hydraulic liquid to the source and ensures perfect containment of it in the chamber even if the source delivers it under a not very high pressure.
  • the device is designed so that the internal volume of the chamber increases or decreases depending on whether the elements of the rod slide mutually to put the latter in extension or make it retract, respectively.
  • the chamber should be delimited by a bottom and a tubular side wall belonging to one of the two elements of the rod and by a piston constituted by the end of the other element, this piston sliding at the interior of the chamber, and that said side wall is pierced with a first orifice communicating permanently with the source of pressurized liquid, and with a second orifice communicating with a discharge conduit only at the end of the travel of the element to which said side wall belongs.
  • the element to which the side wall of the chamber belongs is the first element, the piston being constituted by the end of the second element.
  • abutment means may comprise a key transversely passing through both the first and the second element of the rod, one of them at least by a buttonhole or a pair of buttonholes allowing play between the two elements. sliding amplitude greater than the residual stroke performed by the second element after its unlocking from the first, in order to avoid any risk of mechanical short circuit of the spring at the end of the stroke through the key.
  • the ends of the latter should also be received in a pair of guide slots hollowed out in a fixed part and extending along the direction of the axis of the telescopic rod, in order to stabilize the telescopic rod around its axis. , without the possibility of rotation, and thus force the compression foot to maintain a constant orientation relative to the fixed mandrel.
  • Figures 1 and 2 schematically show, in axial section, a device according to the invention, respectively at the time of arrival in the crimping head of a can to be crimped, and during the crimping operation.
  • a can 1 consisting of a can body 1a and a cover 1b which covers it. These two elements are already provisionally linked to each other by two "clinching" points where the edge of the cover 1b has been locally crimped to the upper edge of the box body 1a.
  • the can 1 in this situation was previously brought, by sliding on a support plane P under the action of a transport star (not shown), to rest on a plate 2 called “compression foot", just at below a fixed mandrel 3, in the centered position, like the compression foot 2 and the mandrel 3, on the axis 4 of a crimping head.
  • This includes rotary crimping wheels, only one of which is shown, designated by the reference 5.
  • the compression foot 2 is mounted at the top of a telescopic rod 7, aligned on the axis 4 of the crimping head.
  • This rod consists of a first upper element 7a and a second lower element 7b, capable of sliding mutually in the direction of the axis 4.
  • the element 7a is hollowed out so as to form a chamber internal cylindrical 8 delimited by a first bottom 8a and a side wall 8c belonging to this element, as well as by a second bottom 8b formed by the end of the element 7b which slides in the chamber 8 like a piston.
  • the amplitude of this sliding is limited by a key 9 pinning transversely through the element 7b, to which it is secured, and through the wall of the chamber 8 (or more exactly its extension) via a pair of buttonholes 10 in which the key 9 can play somewhat in the direction of the axis 4.
  • the ends of the key 9 are guided in slots 11 extending in the direction of the axis 4, which are hollowed out radially in a jacket 12 fixed surrounding the upper element 7a, which can slide longitudinally there.
  • the cooperation of the key 9 with the slots 11 prevents any rotation about the axis 4 of the elements 7a, 7b of the rod 7, therefore of the compression foot 2 linked to the element 7a.
  • a compression spring 13 which is held therein under a certain preload of adjustable value using means not shown. This spring tends to cause the two elements 7a, 7b to move away from one another.
  • the telescopic rod 7 is driven in an alternating movement in the direction of the axis 4 in order to raise the compression foot 2 towards the mandrel 3 or to move it apart by lowering at the desired times of the successive cycles of the crimping operations.
  • the element 7a is fixed in lateral projection, in its lower part, a part 14 supporting a rotary roller 15 of axis 16 perpendicular to the axis 4.
  • This roller is engaged in a guide track 17 closed on itself, of suitable layout, which comprises a plate 18 rotating around its axis 19, parallel to the axis 16 of the roller 15, under the action of a motor (not shown).
  • the fixed jacket 12 is pierced with two radial conduits 20, 21; one, designated by the reference 20, is connected, via a non-return valve 22, to a source 23 of pressurized liquid (in the present example, it is the source of lubricating oil by bubbling the mechanism 14-18 for driving the element 7b); the other, designated by the reference 21, opens into the outside atmosphere.
  • the side wall 8c of the chamber 8 is pierced with two orifices 24, 25.
  • the orifice 24 has an elongated shape in the direction of the axis 4 so that, during the translational movements of the element 7a, the conduit 20 of the jacket 12 remains constantly facing the orifice 24, and that as a result the chamber 8 can permanently receive liquid from the source 23.
  • the orifice 25, of reduced section similar to that of the conduit 21, is positioned so as to come opposite it only when the element 7a will reach the end of its stroke towards the mandrel 3.
  • the roller 15 Due to the rotation of the plate 18, the roller 15 begins to rise, forcing the element 7b and, consequently, the element 7a to move in the direction of the mandrel 3. These two elements then move as a unit, the rod 7 they form together strictly obeying the movement controlled by the roller 15, regardless of the amount of acceleration communicated to it by the latter. During this phase, the spring 13 is completely inoperative.
  • the roller 15 in its guide track 17 then maintains, via the rod 7 and the compression foot 2, the cover 1b pressed on the box body 1a during the entire time that the crimping knobs, having moved closer in contact with the box 1, revolve around the latter, realizing on its entire periphery the fixing of its cover by crimping.
  • the elements 7a, 7b are connected only by the spring 13, which implies that the buttonholes 10 in which the key 9 is engaged are long enough for the latter, having left their lower end when the spring 13 compresses, does not come to abut against their upper end, which would unduly restore a rigid connection between the two elements 7a, 7b.
  • the roller 15 begins to lower the element 7b.
  • the element 7a does the same, driven by the key 9 coming into contact with the lower end of the buttonholes 10.
  • the orifice 25 of the chamber 8 leaves the discharge conduit 21, so that the oil contained in the chamber there is again held captive and that, as a result, the hydraulic locking is restored between the elements 7a and 7b of the rod 7, which finally resumes, under the action of the roller 15, its low position illustrated in the figure 1.
  • the implementation of the device described for the crimping of cans makes it possible to bring the rate of 80 cans / min approximately to 200 cans / min or more, the rate then being limited by the crimping head rather than by the compression mechanism.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Press Drives And Press Lines (AREA)
  • Sealing Devices (AREA)
  • Vacuum Packaging (AREA)

Abstract

The apparatus comprises a compression foot (2) onto which is brought a tin (1) and which is driven in a vertical translation movement by a telescopic rod (7) under the command of a roller (15) engaged in a cam path (17). During the upward stroke of the rod (7), its two constituent elements are locked hydraulically by the presence of oil in a closed intermediate chamber (8); this oil escapes therefrom, at the end of the stroke, via a passage (25, 21), releasing a spring (13) which determines the force which compresses the tin (1) against a fixed mandril (3) during the crimping operation. <IMAGE>

Description

La présente invention se rapporte à un dispositif permettant de sertir le couvercle de boîtes de conserve, comprenant une tête de sertissage et un pied de compression destiné à supporter le corps d'une boîte de conserve sur lequel a été mis en place un couvercle et à presser ce dernier sur le corps de boîte, par poussée de la boîte contre un mandrin fixe avec une force déterminée, durant toute l'opération de sertissage; le pied de compression est fixé à l'extrémité d'un premier élément d'une tige télescopique qui s'étend suivant un axe perpendiculaire à la surface porteuse offerte par le pied de compression et comprend deux éléments pouvant coulisser l'un par rapport à l'autre, auxquels est associé un ressort qui tend à les écarter l'un de l'autre, tandis que le second élément est couplé à un moyen moteur susceptible de lui imposer un mouvement alternatif de translation longitudinal entre deux positions extrêmes définies, savoir une position de repos, éloignée du mandrin précité, et une position de travail causant la mise en compression du couvercle sur le corps de boîte par le mandrin via ledit ressort, le premier élément de la tige et le pied de compression.The present invention relates to a device for crimping the lid of cans, comprising a crimping head and a compression foot intended to support the body of a can on which a lid has been placed and pressing the latter on the box body, by pushing the box against a fixed mandrel with a determined force, throughout the crimping operation; the compression foot is fixed to the end of a first element of a telescopic rod which extends along an axis perpendicular to the load-bearing surface provided by the compression foot and comprises two elements which can slide, one with respect to the other, with which is associated a spring which tends to separate them from each other, while the second element is coupled to a motor means capable of imposing on it an alternating movement of longitudinal translation between two defined extreme positions, namely a rest position, remote from the aforementioned mandrel, and a working position causing the compression of the cover on the box body by the mandrel via said spring, the first element of the rod and the compression foot.

Le rôle du pied de compression consiste à presser le couvercle sur le corps de boîte avec plus ou moins de force pendant la phase de sertissage, au cours de laquelle le bord du couvercle est roulé autour du bord du corps de boîte, puis écrasé afin d'obtenir une liaison étanche par sertissage périphérique. La pression exercée sur le couvercle a une influence déterminante sur la qualité du roulé de sertissage réalisé le long du bord du couvercle. Elle doit avoir une valeur constante bien déterminée pour un type de boîte donné; une pression trop faible ou trop forte conduit à un sertissage défectueux.The role of the compression foot is to press the cover on the box body with more or less force during the crimping phase, during which the edge of the cover is rolled around the edge of the box body, then crushed in order to '' obtain a sealed connection by peripheral crimping. The pressure exerted on the cover has a decisive influence on the quality of the crimping roll produced along the edge of the cover. It must have a constant value well determined for a given type of box; too low or too high a pressure leads to faulty crimping.

Dans le mécanisme défini ci-dessus, le pied de compression prend appui sur le second élément précité, servant d'organe de commande, par l'intermédiaire du ressort, l'ensemble effectuant un mouvement alternatif d'autant plus rapide que la cadence de sertissage est élevée.In the mechanism defined above, the compression foot is supported on the aforementioned second element, serving as a control member, by means of the spring, the assembly performing an alternating movement all the more rapid as the rate of crimping is high.

Lorsque cette cadence est basse, les phénomènes d'inertie sont peu importants et le pied de compression suit correctement les déplacements de l'organe de commande, le ressort conservant un état sensiblement constant.When this rate is low, the phenomena of inertia are not significant and the compression foot follows correctly the movements of the control member, the spring retaining a substantially constant state.

Si la cadence augmente, le ressort se trouve sollicité à chaque course de l'ensemble en direction de la boîte à sertir, du fait de l'inertie du pied de compression et du premier élément auquel il est fixé; comme il n'exerce correctement la pression requise pour le sertissage que lorsqu'il est stabilisé, on conçoit que le degré de compression diffère de la valeur désirée, et ce d'autant plus que la cadence augmente, surtout si les boîtes à sertir sont d'un type nécessitant un effort de compression de petite valeur, donc un ressort relativement faible (c'est le cas par exemple de boîtes à parois minces en alliage léger).If the rate increases, the spring is biased at each stroke of the assembly in the direction of the crimping box, due to the inertia of the compression foot and the first element to which it is fixed; as it only correctly exerts the pressure required for crimping when it is stabilized, it can be seen that the degree of compression differs from the desired value, all the more so as the rate increases, especially if the crimp boxes are of a type requiring a small compressive force, therefore a relatively weak spring (this is the case for example of thin-walled light alloy boxes).

Il y a donc apparemment incompatibilité entre la réalisation à grande cadence du sertissage de boîtes de conserve et l'obtention d'un faible effort de compression sur celles-ci durant l'opération de sertissage.There is therefore apparently incompatibility between carrying out at high speed the crimping of cans and obtaining a low compressive force thereon during the crimping operation.

La présente invention a pour but de lever cette incompatibilité. A cet effet, il est prévu, selon l'invention, de munir la tige télescopique de moyens de verrouillage mutuel temporaire de ses deux éléments constitutifs, qui maintiennent ceux-ci immobilisés l'un par rapport à l'autre dans une position relative où le ressort est dans un état de précontrainte déterminé, et ce durant la majeure partie de la course du premier élément en direction du mandrin, puis, peu avant la fin de cette course, libèrent du premier élément le second, lequel produit alors la compression du couvercle sur le corps de boîte sous le seul effet de la force développée par le ressort sous ladite précontrainte, quelle que soit la valeur plus ou moins faible de celle-ci.The present invention aims to overcome this incompatibility. To this end, it is provided, according to the invention, to provide the telescopic rod with temporary mutual locking means of its two constituent elements, which keep them immobilized relative to one another in a relative position where the spring is in a determined state of prestressing, and this during most of the stroke of the first element in the direction of the mandrel, then, shortly before the end of this stroke, release the second element from the first element, which then produces the compression of the cover on the box body under the sole effect of the force developed by the spring under said prestressing, whatever the more or less low value thereof.

Grâce à ces dispositions, la course de la tige porteuse du pied de compression se subdivise en deux parties : une première partie où les deux éléments de la tige, verrouillés ensemble, se comportent comme une pièce monobloc, de sorte que le pied de compression exécute fidèlement le mouvement imposé par le moyen moteur, quelle que soit l'amplitude de l'accélération imprimée par celui-ci, et ce sans que le ressort soit aucunement sollicité. Puis, dans une deuxième partie, qui correspond à la fin de course du pied de compression, le premier élément se dissocie du second, dont il ne dépend plus que par l'intermédiaire du ressort. Celui-ci joue alors son rôle en exerçant l'effort de compression désiré sur le couvercle à sertir.Thanks to these arrangements, the stroke of the support rod of the compression foot is subdivided into two parts: a first part where the two elements of the rod, locked together, behave like a single piece, so that the compression foot performs faithfully the movement imposed by the motor means, whatever the amplitude of the acceleration impressed by it, and this without the spring being in any way requested. Then, in a second part, which corresponds to the end of travel of the compression foot, the first element dissociates from the second, on which it no longer depends except by through the spring. This then plays its role by exerting the desired compression force on the cover to be crimped.

Il est donc maintenant possible d'effectuer le sertissage de boîtes de conserve à grande cadence tout en ménageant l'application à leurs couvercles d'un effort de compression précis et constant, éventuellement de valeur faible.It is therefore now possible to crimp cans at a high rate while sparing the application to their lids of a precise and constant compression force, possibly of low value.

Dans une forme de réalisation préférée, les moyens de verrouillage des deux éléments de la tige télescopique comprennent une chambre délimitée par des parois appartenant respectivement à l'un et à l'autre de ces éléments, dont le volume interne est directement déterminé par la position mutuelle de ceux-ci lorsqu'ils coulissent l'un par rapport à l'autre, et un moyen de butée qui détermine la situation d'extension maximale de la tige; la chambre est reliée en permanence à une source de liquide sous pression et, mais seulement lorsque la tige va atteindre sa position de fin de course en direction du mandrin, à une voie de décharge de ce liquide hors de la chambre. Le liquide remplissant la chambre forme un coussin hydraulique incompressible emprisonné entre les deux éléments, qu'il solidarise rigoureusement, les deux éléments se trouvant brusquement libérés de cette liaison dès que le liquide peut s'échapper hors de la chambre. Celle-ci peut être reliée à la source de liquide sous pression par une canalisation comportant un clapet anti-retour, lequel empêche, durant la phase de compression, tout retour du liquide hydraulique vers la source et assure un parfait confinement de celui-ci dans la chambre même si la source le délivre sous une pression pas très élevée.In a preferred embodiment, the locking means of the two elements of the telescopic rod comprise a chamber delimited by walls belonging respectively to one and to the other of these elements, the internal volume of which is directly determined by the position mutual of these when they slide relative to each other, and a stop means which determines the situation of maximum extension of the rod; the chamber is permanently connected to a source of pressurized liquid and, but only when the rod will reach its end-of-travel position in the direction of the mandrel, to a path for discharging this liquid out of the chamber. The liquid filling the chamber forms an incompressible hydraulic cushion trapped between the two elements, which it rigorously secures, the two elements being suddenly released from this connection as soon as the liquid can escape from the chamber. This can be connected to the source of pressurized liquid by a pipe comprising a non-return valve, which prevents, during the compression phase, any return of the hydraulic liquid to the source and ensures perfect containment of it in the chamber even if the source delivers it under a not very high pressure.

De préférence, le dispositif est conçu de telle sorte que le volume interne de la chambre augmente ou diminue suivant que les éléments de la tige coulissent mutuellement pour mettre celle-ci en extension ou la faire se rétracter, respectivement. Dans ce cas, il convient que la chambre soit délimitée par un fond et une paroi latérale tubulaire appartenant à l'un des deux éléments de la tige et par un piston constitué par l'extrémité de l'autre élément, ce piston coulissant à l'intérieur de la chambre, et que ladite paroi latérale soit percée d'un premier orifice communiquant en permanence avec la source de liquide sous pression, et d'un second orifice communiquant avec un conduit de décharge uniquement en fin de course de l'élément auquel appartient ladite paroi latérale.Preferably, the device is designed so that the internal volume of the chamber increases or decreases depending on whether the elements of the rod slide mutually to put the latter in extension or make it retract, respectively. In this case, the chamber should be delimited by a bottom and a tubular side wall belonging to one of the two elements of the rod and by a piston constituted by the end of the other element, this piston sliding at the interior of the chamber, and that said side wall is pierced with a first orifice communicating permanently with the source of pressurized liquid, and with a second orifice communicating with a discharge conduit only at the end of the travel of the element to which said side wall belongs.

Dans une forme de réalisation particulière, l'élément auquel appartient la paroi latérale de la chambre est le premier élément, le piston étant constitué par l'extrémité du second élément.In a particular embodiment, the element to which the side wall of the chamber belongs is the first element, the piston being constituted by the end of the second element.

Quant au moyen de butée précité, il peut comprendre une clavette traversant transversalement à la fois le premier et le second élément de la tige, l'un d'eux au moins par une boutonnière ou une paire de boutonnières autorisant entre les deux éléments un jeu de coulissement d'amplitude supérieure à la course résiduelle exécutée par le second élément après son déverrouillage d'avec le premier, afin d'écarter tout risque de court-circuit mécanique du ressort en fin de course par l'intermédiaire de la clavette. Il convient par ailleurs que les extrémités de cette dernière soient reçues dans une paire de fentes de guidage creusées dans une pièce fixe et s'étendant suivant la direction de l'axe de la tige télescopique, afin de stabiliser la tige télescopique autour de son axe, sans possibilité de rotation, et d'obliger ainsi le pied de compression à conserver une orientation constante par rapport au mandrin fixe.As for the abovementioned abutment means, it may comprise a key transversely passing through both the first and the second element of the rod, one of them at least by a buttonhole or a pair of buttonholes allowing play between the two elements. sliding amplitude greater than the residual stroke performed by the second element after its unlocking from the first, in order to avoid any risk of mechanical short circuit of the spring at the end of the stroke through the key. The ends of the latter should also be received in a pair of guide slots hollowed out in a fixed part and extending along the direction of the axis of the telescopic rod, in order to stabilize the telescopic rod around its axis. , without the possibility of rotation, and thus force the compression foot to maintain a constant orientation relative to the fixed mandrel.

D'autres particularités et avantages de l'invention ressortiront de la description qui va suivre, en regard des dessins annexés, d'un exemple de réalisation non limitatif.Other features and advantages of the invention will emerge from the description which follows, with reference to the appended drawings, of a nonlimiting exemplary embodiment.

Les figures 1 et 2 représentent schématiquement, en coupe axiale, un dispositif selon l'invention, respectivement au moment de l'arrivée dans la tête de sertissage d'une boîte de conserve à sertir, et durant l'opération de sertissage.Figures 1 and 2 schematically show, in axial section, a device according to the invention, respectively at the time of arrival in the crimping head of a can to be crimped, and during the crimping operation.

On voit sur la figure 1 une boîte de conserve 1 composée d'un corps de boîte 1a et d'un couvercle 1b qui recouvre celui-ci. Ces deux éléments sont déjà provisoirement liés l'un à l'autre par deux points de "clinchage" où le bord du couvercle 1b a été localement serti au bord supérieur du corps de boîte 1a. La boîte de conserve 1 dans cette situation a été auparavant amenée, par glissement sur un plan support P sous l'action d'une étoile de transport (non représentée), à reposer sur un plateau 2 dénommé "pied de compression", juste au-dessous d'un mandrin 3 fixe, en position centrée, tout comme le pied de compression 2 et le mandrin 3, sur l'axe 4 d'une tête de sertissage. Celle-ci comporte des molettes rotatives de sertissage, dont une seule est représentée, désignée par la référence 5.We see in Figure 1 a can 1 consisting of a can body 1a and a cover 1b which covers it. These two elements are already provisionally linked to each other by two "clinching" points where the edge of the cover 1b has been locally crimped to the upper edge of the box body 1a. The can 1 in this situation was previously brought, by sliding on a support plane P under the action of a transport star (not shown), to rest on a plate 2 called "compression foot", just at below a fixed mandrel 3, in the centered position, like the compression foot 2 and the mandrel 3, on the axis 4 of a crimping head. This includes rotary crimping wheels, only one of which is shown, designated by the reference 5.

Pour réaliser l'opération de sertissage du couvercle 1b sur le corps de boîte 1a, on fait soulever ceux-ci par le pied de compression 2 en direction du mandrin 3 (figure 2) de telle manière que le couvercle 1b se trouve pressé par le mandrin 3 sur le corps de boîte 1a avec une force bien déterminée et se trouve ainsi parfaitement maintenu en place. Puis, l'axe de rotation 6 de la molette 5 ayant été rapproché de l'axe 4 de la tête de sertissage, on fait tourner la molette autour de la boîte 1 le long du pourtour de laquelle elle roule en effectuant le sertissage, étant guidée (par des moyens non représentés) de façon à suivre exactement le contour de la boîte. Durant cette opération, la molette force le bord du couvercle à s'enrouler autour du bord du corps de boîte et à s'y solidariser. L'opération de sertissage se déroule de préférence en deux temps, par action d'une molette de première passe, qui assure ledit enroulement, puis d'une molette de deuxième passe, qui écrase les bords enroulés du couvercle et du corps de boîte.To carry out the crimping operation of the cover 1b on the box body 1a, these are lifted by the compression foot 2 in the direction of the mandrel 3 (FIG. 2) so that the cover 1b is pressed by the mandrel 3 on the box body 1a with a well-determined force and is thus perfectly held in place. Then, the axis of rotation 6 of the wheel 5 having been brought closer to the axis 4 of the crimping head, the wheel is rotated around the box 1 along the periphery of which it rolls while performing the crimping, being guided (by means not shown) so as to follow exactly the outline of the box. During this operation, the wheel forces the edge of the cover to wrap around the edge of the box body and to join there. The crimping operation preferably takes place in two stages, by the action of a first pass wheel, which ensures said winding, then a second pass wheel, which crushes the wound edges of the cover and of the box body.

Le pied de compression 2 est monté au sommet d'une tige télescopique 7, alignée sur l'axe 4 de la tête de sertissage. Cette tige se compose d'un premier élément 7a supérieur et d'un second élément 7b inférieur, capables de coulisser mutuellement suivant la direction de l'axe 4. A sa partie inférieure, l'élément 7a est évidé de façon à former une chambre interne 8 cylindrique délimitée par un premier fond 8a et une paroi latérale 8c appartenant à cet élément, ainsi que par un second fond 8b formé par l'extrémité de l'élément 7b qui coulisse dans la chambre 8 à la façon d'un piston. L'amplitude de ce coulissement est limitée par une clavette 9 brochant transversalement à travers l'élément 7b, auquel elle est assujettie, et à travers la paroi de la chambre 8 (ou plus exactement son prolongement) via une paire de boutonnières 10 dans lesquelles la clavette 9 peut jouer quelque peu suivant la direction de l'axe 4. En outre, les extrémités de la clavette 9 sont guidées dans des fentes 11 s'étendant suivant la direction de l'axe 4, qui sont creusées radialement dans une chemise 12 fixe entourant l'élément supérieur 7a, lequel peut y coulisser longitudinalement. La coopération de la clavette 9 avec les fentes 11 empêche toute rotation autour de l'axe 4 des éléments 7a, 7b de la tige 7, donc du pied de compression 2 lié à l'élément 7a.The compression foot 2 is mounted at the top of a telescopic rod 7, aligned on the axis 4 of the crimping head. This rod consists of a first upper element 7a and a second lower element 7b, capable of sliding mutually in the direction of the axis 4. At its lower part, the element 7a is hollowed out so as to form a chamber internal cylindrical 8 delimited by a first bottom 8a and a side wall 8c belonging to this element, as well as by a second bottom 8b formed by the end of the element 7b which slides in the chamber 8 like a piston. The amplitude of this sliding is limited by a key 9 pinning transversely through the element 7b, to which it is secured, and through the wall of the chamber 8 (or more exactly its extension) via a pair of buttonholes 10 in which the key 9 can play somewhat in the direction of the axis 4. In addition, the ends of the key 9 are guided in slots 11 extending in the direction of the axis 4, which are hollowed out radially in a jacket 12 fixed surrounding the upper element 7a, which can slide longitudinally there. The cooperation of the key 9 with the slots 11 prevents any rotation about the axis 4 of the elements 7a, 7b of the rod 7, therefore of the compression foot 2 linked to the element 7a.

Entre les fonds opposés 8a, 8b limitant axialement la chambre 8 est disposé un ressort de compression 13, qui s'y trouve maintenu sous une certaine précontrainte de valeur réglable à l'aide de moyens non représentés. Ce ressort tend à faire s'écarter l'un de l'autre les deux éléments 7a, 7b.Between the opposite bottoms 8a, 8b axially limiting the chamber 8 is disposed a compression spring 13, which is held therein under a certain preload of adjustable value using means not shown. This spring tends to cause the two elements 7a, 7b to move away from one another.

La tige télescopique 7 est animée d'un mouvement alternatif suivant la direction de l'axe 4 afin de faire monter le pied de compression 2 vers le mandrin 3 ou de l'en écarter par abaissement aux moments voulus des cycles successifs des opérations de sertissage. A cet effet, à l'élément 7a est fixée en saillie latérale, dans sa partie inférieure, une pièce 14 supportant un galet rotatif 15 d'axe 16 perpendiculaire à l'axe 4. Ce galet est engagé dans une piste de guidage 17 fermée sur elle-même, de tracé approprié, que comporte un plateau 18 tournant autour de son axe 19, parallèle à l'axe 16 du galet 15, sous l'action d'un moteur (non représenté). En fait, il convient de dédoubler le galet 15 en deux galets voisins, d'axes parallèles, l'un roulant contre le flanc extérieur de la piste 17 et l'autre contre son flanc intérieur.The telescopic rod 7 is driven in an alternating movement in the direction of the axis 4 in order to raise the compression foot 2 towards the mandrel 3 or to move it apart by lowering at the desired times of the successive cycles of the crimping operations. . To this end, to the element 7a is fixed in lateral projection, in its lower part, a part 14 supporting a rotary roller 15 of axis 16 perpendicular to the axis 4. This roller is engaged in a guide track 17 closed on itself, of suitable layout, which comprises a plate 18 rotating around its axis 19, parallel to the axis 16 of the roller 15, under the action of a motor (not shown). In fact, it is necessary to split the roller 15 into two neighboring rollers, with parallel axes, one rolling against the outer flank of the track 17 and the other against its inner flank.

La chemise fixe 12 est percée de deux conduits radiaux 20, 21; l'un, désigné par la référence 20, est relié, via un clapet anti-retour 22, à une source 23 de liquide sous pression (dans le présent exemple, il s'agit de la source d'huile de lubrification par barbotage du mécanisme 14-18 d'entraînement de l'élément 7b); l'autre, désigné par la référence 21, débouche dans l'atmosphère extérieure. Parallèlement, la paroi latérale 8c de la chambre 8 est percée de deux orifices 24, 25. L'orifice 24 présente une forme allongée dans la direction de l'axe 4 de telle sorte que, au cours des mouvements de translation de l'élément 7a, le conduit 20 de la chemise 12 reste constamment en regard de l'orifice 24, et que par suite la chambre 8 puisse recevoir en permanence du liquide de la source 23. L'orifice 25, de section réduite semblable à celle du conduit 21, est positionné de façon à ne venir en regard de celui-ci que lorsque l'élément 7a va atteindre la fin de sa course vers le mandrin 3.The fixed jacket 12 is pierced with two radial conduits 20, 21; one, designated by the reference 20, is connected, via a non-return valve 22, to a source 23 of pressurized liquid (in the present example, it is the source of lubricating oil by bubbling the mechanism 14-18 for driving the element 7b); the other, designated by the reference 21, opens into the outside atmosphere. In parallel, the side wall 8c of the chamber 8 is pierced with two orifices 24, 25. The orifice 24 has an elongated shape in the direction of the axis 4 so that, during the translational movements of the element 7a, the conduit 20 of the jacket 12 remains constantly facing the orifice 24, and that as a result the chamber 8 can permanently receive liquid from the source 23. The orifice 25, of reduced section similar to that of the conduit 21, is positioned so as to come opposite it only when the element 7a will reach the end of its stroke towards the mandrel 3.

Le dispositif qui vient d'être décrit fonctionne de la manière expliquée ci-après.The device which has just been described operates in the manner explained below.

Initialement, lorsque une étoile de transfert (non représentée) amène la boîte 1 sur le pied de compression 2, celui-ci affleure la surface du plan P, du fait que les éléments 7a, 7b de la tige 7 sont mis en position basse sous la commande du galet 15 guidé dans la piste 17 du plateau rotatif 18. Sous l'action du ressort 13, la tige 7 est en situation d'extension, définie par la clavette 9 en butée contre l'extrémité inférieure des boutonnières 10. L'orifice 25 ne se trouve pas en regard du conduit 21; il est donc obturé par la paroi de la chemise 12, de sorte que l'huile qui remplit la chambre 8 ne peut sortir de celle-ci ni par l'orifice 25, ni par l'orifice 24 à cause du clapet anti-retour 22. Cette masse d'huile prisonnière crée un couplage hydraulique entre les éléments 7a, 7b constituant la tige 7, qui les rend rigidement solidaires.Initially, when a transfer star (not shown) brings the box 1 onto the compression foot 2, the latter is flush with the surface of the plane P, because the elements 7a, 7b of the rod 7 are placed in the low position under the control of the roller 15 guided in the track 17 of the turntable 18. Under the action of the spring 13, the rod 7 is in an extended position, defined by the key 9 in abutment against the lower end of the buttonholes 10. L orifice 25 is not opposite the conduit 21; it is therefore closed off by the wall of the jacket 12, so that the oil which fills the chamber 8 cannot exit therefrom either through the orifice 25 or through the orifice 24 because of the non-return valve. 22. This mass of trapped oil creates a hydraulic coupling between the elements 7a, 7b constituting the rod 7, which makes them rigidly secured.

Du fait de la rotation du plateau 18, le galet 15 commence à remonter, obligeant l'élément 7b et, par suite, l'élément 7a à se déplacer en direction du mandrin 3. Ces deux éléments se déplacent alors en bloc, la tige 7 qu'ils forment ensemble obéissant rigoureusement au mouvement commandé par le galet 15, quelle que soit l'importance de l'accélération qui lui est communiquée par celui-ci. Durant cette phase, le ressort 13 est complètement inopérant.Due to the rotation of the plate 18, the roller 15 begins to rise, forcing the element 7b and, consequently, the element 7a to move in the direction of the mandrel 3. These two elements then move as a unit, the rod 7 they form together strictly obeying the movement controlled by the roller 15, regardless of the amount of acceleration communicated to it by the latter. During this phase, the spring 13 is completely inoperative.

Il en résulte un rapprochement de la boîte 1 vis-à-vis du mandrin 3 qui peut être très rapide. Toutefois, lorsque le couvercle 1b va toucher le mandrin (figure 2), l'orifice 25 atteint le conduit 21, de sorte que l'huile contenue dans la chambre 8 peut s'en échapper vers l'extérieur. La pression dans la chambre tombe par suite à zéro et les deux éléments 7a, 7b se trouvent dissociés. Le ressort 13 produit alors son effet qui est de repousser vers le mandrin, avec une force déterminée correspondant à son état de précontrainte, l'élément 7a en prenant appui sur l'élément 7b. La force de compression du couvercle 1b sur le corps de boîte 1a qui en résulte peut être relativement faible, car elle n'intervient qu'en fin de course de l'élément 7a, lequel est, durant la majeure partie de sa course, actionné indépendamment du ressort 13, étant verrouillé hydrauliquement avec l'élément 7b mu par le galet 15 par l'intermédiaire de la chambre 8 remplie d'huile et close. Ce mode d'actionnement en translation du pied de compression 2 autorise donc à la fois une grande cadence de fonctionnement sans effet d'inertie fâcheux de l'élément 7a par rapport à l'élément 7b, et une intensité mesurée de la force de compression appliquée au couvercle 1b sur le corps de boîte 1a; cette intensité peut en particulier être réglée à un niveau très bas lorsque le corps de boîte est fragile, étant réalisé par exemple en tôle d'aluminium très mince.This results in a reconciliation of the box 1 vis-à-vis the mandrel 3 which can be very rapid. However, when the cover 1b will touch the mandrel (Figure 2), the orifice 25 reaches the conduit 21, so that the oil contained in the chamber 8 can escape outward. The pressure in the chamber therefore drops to zero and the two elements 7a, 7b are dissociated. The spring 13 then produces its effect which is to push towards the mandrel, with a determined force corresponding to its state of prestressing, the element 7a by bearing on the element 7b. The compression force of the cover 1b on the box body 1a which results therefrom can be relatively low, because it only intervenes at the end of the travel of the element 7a, which is actuated during most of its travel. independently of the spring 13, being locked hydraulically with the element 7b moved by the roller 15 via the chamber 8 filled with oil and closed. This mode of actuation in translation of the compression foot 2 therefore allows both a high rate of operation without annoying inertia effect of the element 7a relative to the element 7b, and a measured intensity of the compressive force applied to the cover 1b on the box body 1a; this intensity can in particular be adjusted to a very low level when the box body is fragile, being produced for example from very thin aluminum sheet.

Le galet 15 dans sa piste de guidage 17 maintient alors, via la tige 7 et le pied de compression 2, le couvercle 1b pressé sur le corps de boîte 1a durant tout le temps que les molettes de sertissage, s'étant rapprochées au contact de la boîte 1, tournent autour de celle-ci en réalisant sur tout son pourtour la fixation de son couvercle par sertissage. Dans cette situation, il importe que les éléments 7a, 7b ne soient en liaison que par le ressort 13, ce qui implique que les boutonnières 10 dans lesquelles est engagée la clavette 9 soient suffisamment longues pour que celle-ci, ayant quitté leur extrémité inférieure lorsque le ressort 13 se comprime, ne vienne pas buter contre leur extrémité supérieure, ce qui rétablirait indûment une liaison rigide entre les deux éléments 7a, 7b.The roller 15 in its guide track 17 then maintains, via the rod 7 and the compression foot 2, the cover 1b pressed on the box body 1a during the entire time that the crimping knobs, having moved closer in contact with the box 1, revolve around the latter, realizing on its entire periphery the fixing of its cover by crimping. In this situation, it is important that the elements 7a, 7b are connected only by the spring 13, which implies that the buttonholes 10 in which the key 9 is engaged are long enough for the latter, having left their lower end when the spring 13 compresses, does not come to abut against their upper end, which would unduly restore a rigid connection between the two elements 7a, 7b.

Lorsque le sertissage est achevé, le galet 15 commence à faire redescendre l'élément 7b. L'élément 7a fait de même, entraîné par la clavette 9 venue en contact avec l'extrémité inférieure des boutonnières 10. Presque aussitôt, l'orifice 25 de la chambre 8 quitte le conduit de décharge 21, de sorte que l'huile contenue dans la chambre y est de nouveau retenue prisonnière et que, par suite, le verrouillage hydraulique est rétabli entre les éléments 7a et 7b de la tige 7, laquelle reprend finalement, sous l'action du galet 15, sa position basse illustrée à la figure 1.When the crimping is completed, the roller 15 begins to lower the element 7b. The element 7a does the same, driven by the key 9 coming into contact with the lower end of the buttonholes 10. Almost immediately, the orifice 25 of the chamber 8 leaves the discharge conduit 21, so that the oil contained in the chamber there is again held captive and that, as a result, the hydraulic locking is restored between the elements 7a and 7b of the rod 7, which finally resumes, under the action of the roller 15, its low position illustrated in the figure 1.

A titre indicatif, la mise en oeuvre du dispositif décrit pour le sertissage de boîtes de conserve permet de porter la cadence de 80 boîtes/min environ à 200 boîtes/min ou plus, la cadence étant alors limitée par la tête de sertissage plutôt que par le mécanisme de compression.As an indication, the implementation of the device described for the crimping of cans makes it possible to bring the rate of 80 cans / min approximately to 200 cans / min or more, the rate then being limited by the crimping head rather than by the compression mechanism.

Claims (8)

Dispositif permettant de sertir le couvercle de boîtes de conserve, comprenant une tête de sertissage et un pied de compression destiné à supporter le corps d'une boîte de conserve sur lequel a été mis en place un couvercle et à presser ce dernier sur le corps de boîte, par poussée de la boîte contre un mandrin fixe avec une force déterminée, durant toute l'opération de sertissage, le pied de compression étant fixé à l'extrémité d'un premier élément d'une tige télescopique qui s'étend suivant un axe perpendiculaire à la surface porteuse offerte par le pied de compression et comprend deux éléments pouvant coulisser l'un par rapport à l'autre, auxquels est associé un ressort qui tend à les écarter l'un de l'autre, tandis que le second élément est couplé à un moyen moteur susceptible de lui imposer un mouvement alternatif de translation longitudinal entre deux positions extrêmes définies, savoir une position de repos, éloignée du mandrin précité, et une position de travail causant la mise en compression du couvercle sur le corps de bâti par le mandrin via ledit ressort, le premier élément de la tige et le pied de compression, caractérisé par le fait que la tige télescopique (7) est munie de moyens de verrouillage mutuel temporaire de ses deux éléments (7a, 7b), qui maintiennent ceux-ci immobilisés l'un par rapport à l'autre dans une position relative où le ressort (13) est dans un état de précontrainte déterminé, et ce durant la majeure partie de la course du premier élément (7a) en direction du mandrin (3), puis, peu avant la fin de cette course, libèrent du premier élément le second, lequel produit alors la compression du couvercle (1b) sur le corps de boîte (1a) sous le seul effet de la force développée par le ressort (13) sous ladite précontrainte.Device for crimping the lid of cans, comprising a crimping head and a compression foot intended to support the body of a can on which a lid has been placed and to press the latter on the body of box, by pushing the box against a fixed mandrel with a determined force, throughout the crimping operation, the compression foot being fixed to the end of a first element of a telescopic rod which extends in a axis perpendicular to the bearing surface offered by the compression foot and comprises two elements which can slide relative to each other, with which is associated a spring which tends to separate them from each other, while the second element is coupled to a motor means capable of imposing on it an alternating movement of longitudinal translation between two defined extreme positions, namely a rest position, distant from the aforementioned mandrel, and a working position causing compression of the cover on the frame body by the mandrel via said spring, the first element of the rod and the compression foot, characterized in that the telescopic rod (7) is provided with means for temporary mutual locking of its two elements (7a, 7b), which keep them immobilized relative to one another in a relative position where the spring (13) is in a determined state of prestressing, and this during the major part of the stroke of the first element (7a) towards the mandrel (3), then, shortly before the end of this stroke, release the second element from the first element, which then produces the compression of the cover (1b) on the body box (1a) under the sole effect of the force developed by the spring (13) under said prestress. Dispositif selon la revendication 1, caractérisé par le fait que les moyens de verrouillage comprennent une chambre (8) délimitée par des parois appartenant respectivement à l'un et à l'autre des deux éléments (7a, 7b) de la tige télescopique (7), dont le volume interne est directement déterminé par la position mutuelle de ceux-ci lorsqu'ils coulissent l'un par rapport à l'autre, et un moyen de butée (9, 10) qui détermine la situation d'extension maximale de la tige (7), et que la chambre (8) est reliée en permanence à une source (23) de liquide sous pression et, mais seulement lorsque la tige (7) va atteindre sa position de fin de course en direction du mandrin (3), à une voie (25, 21) de décharge de ce liquide hors de la chambre (8).Device according to claim 1, characterized in that the locking means comprise a chamber (8) delimited by walls belonging respectively to one and to the other of the two elements (7a, 7b) of the telescopic rod (7 ), the internal volume of which is directly determined by the mutual position of these when they slide relative to each other, and a stop means (9, 10) which determines the situation of maximum extension of the rod (7), and that the chamber (8) is permanently connected to a source (23) of pressurized liquid and, but only when the rod (7) will reach its position of limit switch towards the mandrel (3), to a path (25, 21) for discharging this liquid out of the chamber (8). Dispositif selon la revendication 2, caractérisé par le fait que la chambre (8) est reliée à la source (23) de liquide sous pression par une canalisation comportant un clapet anti-retour (22).Device according to claim 2, characterized in that the chamber (8) is connected to the source (23) of pressurized liquid by a pipe comprising a non-return valve (22). Dispositif selon la revendication 2 ou 3, caractérisé par le fait que le volume interne de la chambre (8) augmente ou diminue suivant que les éléments (7a, 7b) de la tige coulissent mutuellement pour mettre celle-ci en extension ou la faire se rétracter, respectivement.Device according to claim 2 or 3, characterized in that the internal volume of the chamber (8) increases or decreases depending on whether the elements (7a, 7b) of the rod slide mutually to put the latter in extension or make it become retract, respectively. Dispositif selon la revendication 4, caractérisé par le fait que la chambre (8) est délimitée par un fond (8a) et une paroi latérale (8c) tubulaire appartenant à l'un des deux éléments de la tige (7) et par un piston (8b) constitué par l'extrémité de l'autre élément, ce piston coulissant à l'intérieur de la chambre, et que ladite paroi latérale (8c) est percée d'un premier orifice (24) communiquant en permanence avec la source (23) de liquide sous pression, et d'un second orifice (25) communiquant avec un conduit (21) de décharge uniquement en fin de course de l'élément auquel appartient ladite paroi latérale.Device according to claim 4, characterized in that the chamber (8) is delimited by a bottom (8a) and a tubular side wall (8c) belonging to one of the two elements of the rod (7) and by a piston (8b) formed by the end of the other element, this piston sliding inside the chamber, and that said side wall (8c) is pierced with a first orifice (24) communicating permanently with the source ( 23) of pressurized liquid, and a second orifice (25) communicating with a discharge conduit (21) only at the end of the travel of the element to which said side wall belongs. Dispositif selon la revendication 5, caractérisé par le fait que l'élément auquel appartient la paroi latérale (8c) de la chambre (8) est le premier élément (7a), le piston (8b) étant constitué par l'extrémité du second élément (7b).Device according to claim 5, characterized in that the element to which the side wall (8c) of the chamber (8) belongs is the first element (7a), the piston (8b) being constituted by the end of the second element (7b). Dispositif selon l'une quelconque des revendications 2 à 6, caractérisé par le fait que le moyen de butée comprend une clavette (9) traversant transversalement à la fois le premier et le second élément de la tige, l'un d'eux au moins par une boutonnière ou une paire de boutonnières (10) autorisant entre les deux éléments (7a, 7b) un jeu de coulissement d'amplitude supérieure à la course résiduelle exécutée par le second élément (7b) après son déverrouillage d'avec le premier.Device according to any one of Claims 2 to 6, characterized in that the abutment means comprises a key (9) transversely passing through both the first and the second element of the rod, at least one of them by a buttonhole or a pair of buttonholes (10) allowing between the two elements (7a, 7b) a sliding play of amplitude greater than the residual stroke performed by the second element (7b) after its unlocking with the first. Dispositif selon la revendication 7, caractérisé par le fait que les extrémités de la clavette (9) sont reçues dans une paire de fentes de guidage (11) creusées dans une pièce fixe (12) et s'étendant suivant la direction de l'axe (4) de la tige télescopique (7).Device according to claim 7, characterized in that the ends of the key (9) are received in a pair of guide slots (11) hollowed out in a fixed part (12) and extending in the direction of the axis (4) of the telescopic rod (7).
EP93400804A 1992-03-31 1993-03-29 High-speed apparatus for crimping tins Expired - Lifetime EP0564345B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203907 1992-03-31
FR929203907A FR2689093B1 (en) 1992-03-31 1992-03-31 DEVICE FOR CRIMPING LARGE CANNED CANS.

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EP0564345A1 true EP0564345A1 (en) 1993-10-06
EP0564345B1 EP0564345B1 (en) 1995-11-29

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EP (1) EP0564345B1 (en)
DE (1) DE69300891T2 (en)
ES (1) ES2082602T3 (en)
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DE102006020361A1 (en) * 2006-02-09 2007-08-16 Cfs Germany Gmbh Packaging machine for producing a package with a return in the packaging trough edge
DE102006050415A1 (en) * 2006-10-20 2008-04-24 Cfs Germany Gmbh Packaging machine with a controllable pneumatic / hydraulic drive
EP3305432B1 (en) * 2016-10-10 2022-02-09 Xolution GmbH Testing mean for can closer
CN112009895B (en) * 2020-08-25 2022-10-18 南阳杜尔气体装备有限公司 High-temperature anti-corrosion storage tank
CN117302661B (en) * 2023-11-28 2024-02-06 四川威纳尔特种电子材料有限公司 Automatic boxing device and method for bonding wire coil stock for chip packaging

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GB1190381A (en) * 1966-06-16 1970-05-06 William Garfield Ltd Improvements relating to Containers made from Foil and like Materials
US3868917A (en) * 1969-08-29 1975-03-04 Reynolds Metals Co Sealed container and apparatus for and method of sealing same
FR2303713A1 (en) * 1975-03-14 1976-10-08 Hunter Douglas International Horizontal-edged vessel closing mechanism - has upper punch with peripheral frame in sections sliding horizontally towards vessel (BE130976)
FR2464190A1 (en) * 1979-09-01 1981-03-06 Hd Ekco Nv Sealing machine for foil containers - has stationary lower die, and slide frame for containers

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Publication number Priority date Publication date Assignee Title
GB1190381A (en) * 1966-06-16 1970-05-06 William Garfield Ltd Improvements relating to Containers made from Foil and like Materials
US3868917A (en) * 1969-08-29 1975-03-04 Reynolds Metals Co Sealed container and apparatus for and method of sealing same
FR2303713A1 (en) * 1975-03-14 1976-10-08 Hunter Douglas International Horizontal-edged vessel closing mechanism - has upper punch with peripheral frame in sections sliding horizontally towards vessel (BE130976)
FR2464190A1 (en) * 1979-09-01 1981-03-06 Hd Ekco Nv Sealing machine for foil containers - has stationary lower die, and slide frame for containers

Also Published As

Publication number Publication date
FR2689093B1 (en) 1994-07-01
ES2082602T3 (en) 1996-03-16
DE69300891T2 (en) 1996-05-23
DE69300891D1 (en) 1996-01-11
US5328314A (en) 1994-07-12
EP0564345B1 (en) 1995-11-29
FR2689093A1 (en) 1993-10-01

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