EP0138689A2 - Machine for closing receptacles with a film - Google Patents

Machine for closing receptacles with a film Download PDF

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Publication number
EP0138689A2
EP0138689A2 EP84401947A EP84401947A EP0138689A2 EP 0138689 A2 EP0138689 A2 EP 0138689A2 EP 84401947 A EP84401947 A EP 84401947A EP 84401947 A EP84401947 A EP 84401947A EP 0138689 A2 EP0138689 A2 EP 0138689A2
Authority
EP
European Patent Office
Prior art keywords
frame
machine according
trays
guides
machine
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
EP84401947A
Other languages
German (de)
French (fr)
Other versions
EP0138689B1 (en
EP0138689A3 (en
Inventor
Jean-Piere Auguste Morard-Chataignier
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.)
Constructions De Materiel Metallique Et Electrique - Socamel SA Ste
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Constructions De Materiel Metallique Et Electrique - Socamel SA Ste
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.)
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Publication date
Application filed by Constructions De Materiel Metallique Et Electrique - Socamel SA Ste filed Critical Constructions De Materiel Metallique Et Electrique - Socamel SA Ste
Priority to AT84401947T priority Critical patent/ATE31688T1/en
Publication of EP0138689A2 publication Critical patent/EP0138689A2/en
Publication of EP0138689A3 publication Critical patent/EP0138689A3/en
Application granted granted Critical
Publication of EP0138689B1 publication Critical patent/EP0138689B1/en
Expired legal-status Critical Current

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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
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing

Definitions

  • the present invention relates to a machine for closing containers such as trays containing food.
  • the problem is to close the tray with the above film.
  • machines comprising two parallel endless chains, driven in synchronism supporting plates each having at its center an opening in which a tray is introduced which is retained by its collar.
  • a film is placed above the plates and the latter pass intermittently under a heating plate which obtains the sealing of the trays.
  • the machine of the invention makes it possible, by judicious adjustment of its members, to close trays having different dimensions.
  • the machine comprises two parallel guides, with adjustable spacing, on which the trays rest on two opposite edges of their flange, a hot plate movable in height being disposed above said guides which are interrupted under said plate to allow the passage of an anvil, movable in height, making it possible to pinch between it and said plate the two transverse edges of two adjacent trays, the assembly being driven by an alternative movement of translation whose direction is parallel to the aforementioned guides and means being provided to support the bottom of the trays.
  • 1 shows diagrammatically the frame of the machine comprising two slides 2, parallel and fixed on which sleeves 3 slide, made integral with a frame 4 whose movement is controlled by a jack 5.
  • the stroke of the frame 4 is limited in one direction by the stretched position of the jack 5 and in the other by a stop 6 with adjustable position (FIG. 1).
  • the frame 4 supports two parallel guides 7, with variable spacing interrupted at a point along their length, for reasons which will appear later and delimiting two guide segments 7a and 7b respectively.
  • Each segment 7a is formed by the upper part of a rectangular frame arranged perpendicular to the frame 4 and the lower side 7'a of which extends in 8 beyond its end 9 to support two rectangular and rectangular plates 10 whose edges upper form the segment 7b in combination with bars 11, with variable spacing but fixed longitudinally with respect to the chassis.
  • the guides 7 serve to support the lateral edges of the trays B and it is understood that by modifying the spacing of said guides, it is possible to admit trays having different dimensions.
  • this result is obtained using two pairs of rods 12, the rods of each pair being hinged together by one of their ends at 13 and 14 on a frame 15 disposed under that 4 and, by each of their other ends, at side 7'a.
  • the frame 15 slides on a guide 16 of the frame 4 extending parallel to the guide 7.
  • the displacement of the frame 15 is ensured by a screw 17, with an operating handwheel 18, which is screwed into the frame 4 and immobilized in translation relative to that 15.
  • an anvil 20 movable in height and making it possible to pinch between it and the heating plate 21 situated above the guides 7, the transverse edges of the trays B and the shutter film F.
  • the plate 21 supports the reel D on which the film F, in reserve, is wound.
  • the heating plate 21 is supported by two columns 22 passing through the frame 4 and made integral by their lower end with a cross member 23 to which is fixed the body of a jack 24 whose piston rod is connected to a cross member 25, guided on the columns 22, and supporting, by means of columns 26, the anvil 20.
  • Each column 22 has a shoulder 27, located above the frame 4, under which bears a spring 28 mounted on said column and interposed between said frame 4 and said shoulder 27.
  • the two springs 28 have the function of holding the plate 21 raised.
  • the cylinder 24 is extended, which has the effect of raising the anvil 20 until the crosspiece 25 abuts under the frame 4. At this time, if we continue to extend the cylinder, we lowers the heating plate 21 by compressing the springs 28.
  • the adjustment of the stop 29 determines that of the stop 6 ( Figure 1).
  • the stop 29 is carried by an arm 30, the lower end of which is crossed by a threaded rod 31 linked axially to the frame 1 and which extends at 32, beyond its median bearing 33, to receive a nut 34 for supporting the stop 6.
  • the two threaded parts have an opposite pitch and the nut 34 is initially positioned so that if L is the distance separating the arm 30 and the bearing 33, the distance separating said bearing and the nut 34 is equal to L + E, expression in which E is the width of the space 19 separating the segments 7a and 7b. In practice, E represents the width of the anvil 20.
  • the film F being stretched on the segment 7b, it is pinched, by all appropriate means, against the fixed bars 11 (the arrow P in FIGS. 8 and 9 shows diagrammatically the device for fixing the film relative to the frame) then the cylinder 5 is stretched again, which has the effect of placing the heating plate 21 above the tray B 2, while stretching in the cylinder 24 is completed to seal the tray B and outline the sealing of the B 2.
  • the trays are supported only by two edges which rest on the guides.
  • the trays are generally made of a thin plastic material, the latter is not rigid enough to level of the flange to ensure the maintenance of the tray when it is full. It is therefore necessary that the bottom of the tray is supported on a support.
  • this result is obtained by means of two parallel support bars 36 (FIG. 3), movable in height and extending downstream of the heating plate by an endless belt 37.
  • the two support bars 36 rest freely by their front end 38 on a crosspiece 39, joining the ends of two links 40 hinged at 41 on the frame, and they can slide by their rear end 42 in a slide 43 secured to the carpet frame 37 whose axes 44 are supported by connecting rods 45 and 46 identical to those 40 and hinged in 47 and 48 s on the frame ( Figure 1).
  • the pivoting of the connecting rods 45 and 46 is determined by a connecting rod 49 uniting extensions 50 and 51, extending beyond the axes 41 and 47 the connecting rods 40 and 45.
  • each bar 36 is linked in longitudinal translation to the frame 4.
  • each bar has a fork 52 engaged with a transverse axis 53 of the frame 4.
  • the motor 54 of intermittent drive of the discharge belt 37 is carried by one of the links 45-46 (that 45 in the drawings).
  • the rods 40 are blocked, by any appropriate means, according to the inclination required by blocking, for example, the operating lever 55 of said rods relative to the frame (device not shown because within the reach of ordinary skill in the art).
  • a guide 56 (identical to those 7) is fixed by any suitable means to the frame 4 (shown in phantom in Figure 6).
  • the bearing surface of the bottom of the trays is constituted by one of the bars 36.
  • the guide 56 is fixed in the median longitudinal plane of the machine if the two small trays are identical but it is understood that it is possible, if not, to offset it laterally relative to the median plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Closing Of Containers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1. Machine for closing containers such as rectangular trays having a peripheral flange, by means of a plastic film or similar, said machine including support members on which the flange rests and a heating plate, characterized in that it includes two parallel guides (7), the spacing between which ist adjustable, on each of which one of the edges of the container rests and in that the guides are interrupted at a point in their length, situated under the heating plate (21), said interruption creating a space (19) in which a heightwise movable anvil (20) is disposed.

Description

La présente invention est relative à une machine destinée à l'obturation des récipients tels que des barquettes contenant des aliments.The present invention relates to a machine for closing containers such as trays containing food.

On sait que de nombreux aliments sont distribués, conditionnés dans des barquettes prismatiques présentant une collerette périphérique sur laquelle est fixé un opercule tel qu'un film thermoplastique.We know that many foods are distributed, packaged in prismatic trays having a peripheral collar on which is fixed a cover such as a thermoplastic film.

Le problème posé consiste à obturer la barquette à l'aide du film précité.The problem is to close the tray with the above film.

En l'état actuel de la technique, on connaît des machines comportant deux chaînes sans fin parallèles, entraînées en synchronisme supportant des plaques présentant chacune en son centre une ouverture dans laquelle on introduit une barquette qui est retenue par sa collerette. Un film est disposé au-dessus des plaques et celles-ci défilent par intermittence sous une plaque chauffante qui réalise l'obturation des barquettes.In the current state of the art, machines are known comprising two parallel endless chains, driven in synchronism supporting plates each having at its center an opening in which a tray is introduced which is retained by its collar. A film is placed above the plates and the latter pass intermittently under a heating plate which obtains the sealing of the trays.

Si on désire obturer des barquettes présentant des dimensions différentes, il faut changer toutes les plaques, d'où une perte de temps importante.If you want to seal trays with different dimensions, you must change all the plates, resulting in a significant loss of time.

A cela s'ajoute le fait qu'une telle machine nécessite des jeux très variés de plaques pour s'adapter aux barquettes existantes.Added to this is the fact that such a machine requires very varied sets of plates to adapt to existing trays.

La machine de l'invention permet, par un réglage judicieux de ses organes, d'obturer des barquettes présentant des dimensions différentes.The machine of the invention makes it possible, by judicious adjustment of its members, to close trays having different dimensions.

Selon l'invention, la machine comporte deux guides parallèles, à écartement réglable, sur lesquels les barquettes reposent selon deux bords opposés de leur collerette, une plaque chauffante mobile en hauteur étant disposée au-dessus desdits guides qui sont interrompus sous ladite plaque pour permettre le passage d'une enclume, mobile en hauteur, permettant de pincer entre elle et ladite plaque les deux bords transversaux de deux barquettes adjacentes, l'ensemble étant animé d'un mouvement alternatif de translation dont la direction est parallèle aux guides précités et des moyens étant prévus pour soutenir le fond des barquettes.According to the invention, the machine comprises two parallel guides, with adjustable spacing, on which the trays rest on two opposite edges of their flange, a hot plate movable in height being disposed above said guides which are interrupted under said plate to allow the passage of an anvil, movable in height, making it possible to pinch between it and said plate the two transverse edges of two adjacent trays, the assembly being driven by an alternative movement of translation whose direction is parallel to the aforementioned guides and means being provided to support the bottom of the trays.

La présente invention sera mieux comprise par la description qui va suivre, faite en se référant aux dessins annexés à titre d'exemple indicatif ,sur lesquels :

  • La figure 1 est une vue en élévation de la machine de l'invention ;
  • La figure 2 est la vue de dessus de la figure 1, la plaque chauffante et la réserve de film n'étant pas représentées;
  • La figure 3 est une vue en coupe, effectuée selon la ligne III-III de la figure 2;
  • La figure 4 est une vue en coupe effectuée selon la ligne IV-IV de la figure 3;
  • La figure 5 est une vue analogue à celle 4 montrant la position des organes mobiles durant l'obturation des barquettes ;
  • La figure 6 est une vue partielle, en perspective, montrant notamment les guides tandis que l'enclume et la plaque chauffante ne sont pas représentées;
  • Les figures 7,8,9 sont des vues partielles et schématiques montrant le fonctionnement de la machine.
The present invention will be better understood by the description tion which will follow, made with reference to the accompanying drawings by way of indicative example, in which:
  • Figure 1 is an elevational view of the machine of the invention;
  • Figure 2 is the top view of Figure 1, the heating plate and the film reserve not being shown;
  • Figure 3 is a sectional view taken along line III-III of Figure 2;
  • Figure 4 is a sectional view taken along the line IV-IV of Figure 3;
  • Figure 5 is a view similar to that 4 showing the position of the movable members during the sealing of the trays;
  • Figure 6 is a partial perspective view showing in particular the guides while the anvil and the heating plate are not shown;
  • Figures 7,8,9 are partial and schematic views showing the operation of the machine.

En se reportant aux dessins, on voit que 1 schématise le bâti de la machine comportant deux glissières 2, parallèles et fixes sur lesquelles coulissent des manchons 3 rendus solidaires d'un cadre 4 dont le déplacement est commandé par un vérin 5.Referring to the drawings, it can be seen that 1 shows diagrammatically the frame of the machine comprising two slides 2, parallel and fixed on which sleeves 3 slide, made integral with a frame 4 whose movement is controlled by a jack 5.

Pour des raisons qui apparaîtront plus loin, la course du cadre 4 est limitée dans un sens par la position étirée du vérin 5 et dans l'autre par une butée 6 à position réglable (figure 1).For reasons which will appear later, the stroke of the frame 4 is limited in one direction by the stretched position of the jack 5 and in the other by a stop 6 with adjustable position (FIG. 1).

Le cadre 4 supporte deux guides 7 parallèles, à écartement variable interrompus en un point de leur longueur, pour des raisons qui apparaîtront.plus loin et délimitant deux segments de guidage respectivement 7a et 7b.The frame 4 supports two parallel guides 7, with variable spacing interrupted at a point along their length, for reasons which will appear later and delimiting two guide segments 7a and 7b respectively.

Chaque segment 7a est formé par la partie supérieure d'un cadre rectangulaire disposé perpendiculairement au cadre 4 et dont le côté inférieur 7'a s'étend en 8 au-delà de son extrémité 9 pour supporter deux plaques 10 prallèles et rectangulaires dont les chants supérieurs forment le segment 7b en combinaison avec des barres 11, à écartement variable mais fixes longitudinalement par rapport au châssis.Each segment 7a is formed by the upper part of a rectangular frame arranged perpendicular to the frame 4 and the lower side 7'a of which extends in 8 beyond its end 9 to support two rectangular and rectangular plates 10 whose edges upper form the segment 7b in combination with bars 11, with variable spacing but fixed longitudinally with respect to the chassis.

Les guides 7 servent d'appui aux bords latéraux des barquettes B et on comprend qu'en modifiant l'écartement desdits guides, il est possible d'admettre des barquettes présentant des dimensions différentes.The guides 7 serve to support the lateral edges of the trays B and it is understood that by modifying the spacing of said guides, it is possible to admit trays having different dimensions.

Selon un mode de réalisation, ce résultat est obtenu à l'aide de deux paires de biellettes 12, les biellettes de chaque paire étant articulées entre elles par une de leurs extrémités en 13 et 14 sur un cadre 15 disposé sous celui 4 et, par chacune de leurs autres extrémités ,au côté 7'a. Le cadre 15 coulisse sur un guide 16 du cadre 4 s'étendant parallèlement au guide 7.According to one embodiment, this result is obtained using two pairs of rods 12, the rods of each pair being hinged together by one of their ends at 13 and 14 on a frame 15 disposed under that 4 and, by each of their other ends, at side 7'a. The frame 15 slides on a guide 16 of the frame 4 extending parallel to the guide 7.

Le déplacement du cadre 15 est assuré par une vis 17, à volant de manoeuvre 18, se vissant dans le cadre 4 et immobilisé en translation par rapport à celui 15.The displacement of the frame 15 is ensured by a screw 17, with an operating handwheel 18, which is screwed into the frame 4 and immobilized in translation relative to that 15.

Lors de la manoeuvre du volant 18, on déplace le cadre 15 par rapport à celui 4, ce qui a pour effet de faire pivoter les biellettes 12 et de modifier l'écartement des guides 7.When the steering wheel 18 is maneuvered, the frame 15 is displaced relative to that 4, which has the effect of rotating the links 12 and modifying the spacing of the guides 7.

Dans l'espace 19 situé entre les segments 7a et 7b des guides s'étend transversalement une enclume 20 mobile en hauteur et permettant de pincer entre elle et la plaque chauffante 21 située au-dessus des guides 7,les bordures transversales des barquettes B et le film F d'obturation.In the space 19 located between the segments 7a and 7b of the guides extends transversely an anvil 20 movable in height and making it possible to pinch between it and the heating plate 21 situated above the guides 7, the transverse edges of the trays B and the shutter film F.

La plaque 21 supporte le dévidoir D sur lequel le film F, -en réserve, est enroulé.The plate 21 supports the reel D on which the film F, in reserve, is wound.

La plaque chauffante 21 est supportée par deux colonnes 22 traversant le cadre 4 et rendues solidaires par leur extrémité inférieure d'une traverse 23 à laquelle est fixé le corps d'un vérin 24 dont la tige de piston est reliée à une traverse 25, guidée sur les colonnes 22, et supportant, par l'entremise de colonnettes 26, l'enclume 20.The heating plate 21 is supported by two columns 22 passing through the frame 4 and made integral by their lower end with a cross member 23 to which is fixed the body of a jack 24 whose piston rod is connected to a cross member 25, guided on the columns 22, and supporting, by means of columns 26, the anvil 20.

Chaque colonne 22 présente un épaulement 27,situé au-dessus du cadre 4,sous lequel prend appui un ressort 28 monté sur ladite colonne et interposé entre ledit cadre 4 et ledit épaulement 27. Les deux ressorts 28 ont pour fonction de maintenir la plaque 21 soulevée.Each column 22 has a shoulder 27, located above the frame 4, under which bears a spring 28 mounted on said column and interposed between said frame 4 and said shoulder 27. The two springs 28 have the function of holding the plate 21 raised.

Pour sceller le film F sur les barquettes, il faut placer le bord supérieur de l'enclume dans le prolongement du plan des guides 7 et faire descendre la plaque chauffante 21.To seal the film F on the trays, place the upper edge of the anvil in the extension of the plane of the guides 7 and lower the heating plate 21.

A cet effet, on étend le vérin 24, ce qui a pour effet de faire monter l'enclume 20 jusqu'au moment où la traverse 25 bute sous le cadre 4. A ce moment, si on continue d'étendre le vérin, on abaisse la plaque chauffante 21 en comprimant les ressorts 28.To this end, the cylinder 24 is extended, which has the effect of raising the anvil 20 until the crosspiece 25 abuts under the frame 4. At this time, if we continue to extend the cylinder, we lowers the heating plate 21 by compressing the springs 28.

Il ressort des explications ci-dessus qu'il importe que les barquettes soient bien positionnées sous la plaque chauffante.It emerges from the above explanations that it is important that the trays are properly positioned under the hot plate.

Ce résultat est obtenu à l'aide d'une butée 29 réglable, constituée par une barre s'étendant transversalement par rapport au guide 7.This result is obtained by means of an adjustable stop 29, constituted by a bar extending transversely relative to the guide 7.

Si on se reporte à la figure 7, on voit que le vérin 5 est complètement étiré et a repoussé vers le gauche le cadre 4. A ce moment, on place une barquette B sur les guides 7 et on règle la position de la butée 29 de façon à ce que le bord postérieur de ladite barquette s'étende au-delà de l'extrémité 9 des segments 7a.If we refer to Figure 7, we see that the cylinder 5 is fully extended and pushed the frame to the left 4. At this time, we place a tray B on the guides 7 and we adjust the position of the stop 29 so that the rear edge of said tray extends beyond the end 9 of the segments 7a.

Selon une caractéristique de l'invention, le réglage de la butée 29 détermine celui de la butée 6 ( figure 1).According to a characteristic of the invention, the adjustment of the stop 29 determines that of the stop 6 (Figure 1).

A cet effet, la butée 29 est portée par un bras 30 dont l'extrémité inférieure est traversée par une tige filetée 31 liée axialement au bâti l'et qui s'étend en 32, au-delà de son palier médian 33,pour recevoir un écrou 34 de support de la butée 6.To this end, the stop 29 is carried by an arm 30, the lower end of which is crossed by a threaded rod 31 linked axially to the frame 1 and which extends at 32, beyond its median bearing 33, to receive a nut 34 for supporting the stop 6.

Les deux parties filetées présentent un pas contraire et l'écrou 34 est initialement positionné de façon à ce que si L est la distance séparant le bras 30 et le palier 33, la distance séparant ledit palier et l'écrou 34 soit égale à L + E, expression dans laquelle E est la largeur de l'espace 19 séparant les segments 7a et 7b. Pratiquement, E représente la largeur de l'enclume 20.The two threaded parts have an opposite pitch and the nut 34 is initially positioned so that if L is the distance separating the arm 30 and the bearing 33, the distance separating said bearing and the nut 34 is equal to L + E, expression in which E is the width of the space 19 separating the segments 7a and 7b. In practice, E represents the width of the anvil 20.

En se reportant de nouveau à la figure 7, on voit qu'il suffit d'actionner le vérin 24 pour réaliser le scellage de la partie antérieure de la barquette B1.Referring again to FIG. 7, it can be seen that it suffices to actuate the jack 24 to seal the front part of the tray B 1 .

En maintenant le vérin 24 étiré, on rétracte celui 5 jusqu'à ce qu'un taquet 35 du cadre 4 ( figure I) prenne appui contre la butée 6. A ce moment, on rétracte le vérin 24 et, simultanément, on place une barquette B sur le guide 7.Keeping the jack 24 stretched, one retracts that 5 until a cleat 35 of the frame 4 (Figure I) bears against the stopper 6. At this time, the jack 24 is retracted and, simultaneously, a tray B on the guide 7.

Le film F étant étiré sur le segment 7b on le pince, par tous moyens appropriés, contre les barres 11 fixes ( la flèche P des figures 8 et 9 schématise le dispositif de fixation du film par rapport au bâti) puis on étire, à nouveau, le vérin 5 ce qui a pour effet de placer la plaque chauffante 21 au-dessus de la barquette B2, En étirant alors le vérin 24 on achève de sceller la barquette B et on ébauche le scellage de celle B2.The film F being stretched on the segment 7b, it is pinched, by all appropriate means, against the fixed bars 11 (the arrow P in FIGS. 8 and 9 shows diagrammatically the device for fixing the film relative to the frame) then the cylinder 5 is stretched again, which has the effect of placing the heating plate 21 above the tray B 2, while stretching in the cylinder 24 is completed to seal the tray B and outline the sealing of the B 2.

Lorsque cette opération est terminée, on relâche le film F puis, en maintenant le vérin 24 étiré, on rétracte celui 5 pour amener de nouveau le cadre 4 dans la position représentée sur la figure 8 et ainsi de suite.When this operation is complete, the film F is released then, while maintaining the jack 24 stretched, one retracts that 5 to bring the frame 4 again to the position shown in FIG. 8 and so on.

Le fonctionnement de la machine a été effectué en tenant compte de la position géométrique des vérins 5 et 24 par rapport au cadre 4 mais on comprend qu'un résultat analogue peut être obtenu si les vérins sont disposés autrement.Ainsi, si le vérin 5 était disposé sur la gauche du cadre 4, il serait rétracté lorsque ledit cadre est dans la position représentée sur la figure 7.The operation of the machine was carried out taking into account the geometrical position of the cylinders 5 and 24 relative to the frame 4 but it is understood that a similar result can be obtained if the cylinders are arranged otherwise. Thus, if the cylinder 5 was placed on the left of frame 4, it would be retracted when said frame is in the position shown in FIG. 7.

Il ressort de l'ensemble de la description ci-dessus, que les barquettes sont supportées uniquement par deux bords qui reposent sur les guides.Comme les barquettes sont généralement réalisées en une matière plastique mince, celle-ci n'est pas suffisamment rigide au niveau de la collerette pour assurer le maintien de la barquette lorsque celle-ci est pleine. Il est donc nécessaire que le fond de la barquette prenne appui sur un support.It emerges from the whole of the above description, that the trays are supported only by two edges which rest on the guides. As the trays are generally made of a thin plastic material, the latter is not rigid enough to level of the flange to ensure the maintenance of the tray when it is full. It is therefore necessary that the bottom of the tray is supported on a support.

Selon l'invention,ce résultat est obtenu à l'aide de deux barres d'appui 36 ( figure 3) parallèles,mobiles en hauteur et se prolongeant en aval de la plaque chauffante par un tapis sans fin 37.According to the invention, this result is obtained by means of two parallel support bars 36 (FIG. 3), movable in height and extending downstream of the heating plate by an endless belt 37.

Les deux barres d'appui 36 reposent librement par leur extrémité antérieure 38 sur une traverse 39, réunissant les extrémités de deux biellettes 40 articulées en 41 sur le bâti, et elles peuvent coulisser par leur extrémité postérieure 42 dans une glissière 43 solidaire de l'armature du tapis 37 dont les axes 44 sont portés par des biellettes 45 et 46 identiques à celles 40 et articuléesen 47 et 48 sur le bâti (figure 1).The two support bars 36 rest freely by their front end 38 on a crosspiece 39, joining the ends of two links 40 hinged at 41 on the frame, and they can slide by their rear end 42 in a slide 43 secured to the carpet frame 37 whose axes 44 are supported by connecting rods 45 and 46 identical to those 40 and hinged in 47 and 48 s on the frame (Figure 1).

Le pivotement des biellettes 45 et 46 est déterminé par une bielle 49 réunissant des extensions 50 et 51, prolongeant au-delà des axes 41 et 47 les biellettes 40 et 45.The pivoting of the connecting rods 45 and 46 is determined by a connecting rod 49 uniting extensions 50 and 51, extending beyond the axes 41 and 47 the connecting rods 40 and 45.

Les barres 36 sont liées en translation longitudinale au cadre 4. A cet effet, chaque barre présente une fourchette 52 en prise avec un axe transversal 53 du cadre 4.The bars 36 are linked in longitudinal translation to the frame 4. For this purpose, each bar has a fork 52 engaged with a transverse axis 53 of the frame 4.

Le moteur 54 d'entraînement intermittent du tapis d'évacuation 37 est porté par l'une des biellettes 45-46 (celle 45 sur les dessins).The motor 54 of intermittent drive of the discharge belt 37 is carried by one of the links 45-46 (that 45 in the drawings).

Naturellement, lorsque le réglage en hauteur des barres 36 est effectué, les biellettes 40 sont bloquées, par tous moyens appropriés, selon l'inclinaison requise en bloquant, par exemple, le levier de manoeuvre 55 desdites biellettes par raport au bâti ( dispositif non représenté car à la portée de l'homme de l'art).Naturally, when the height adjustment of the bars 36 is carried out, the rods 40 are blocked, by any appropriate means, according to the inclination required by blocking, for example, the operating lever 55 of said rods relative to the frame (device not shown because within the reach of ordinary skill in the art).

Lorsqu'on doit obturer des barquettes de petites dimensions, il est possible d'en placer deux transversalement entre les guides 7. A cet effet, on fixe par tous moyens appropriés un guide 56 ( identique à ceux 7) sur le cadre 4 (représenté en traits mixtes sur la figure 6).When it is necessary to close trays of small dimensions, it is possible to place two transversely between the guides 7. To this end, a guide 56 (identical to those 7) is fixed by any suitable means to the frame 4 (shown in phantom in Figure 6).

Dans ce cas, la surface d'appui du fond des barquettes est constituée par l'une des barres 36.In this case, the bearing surface of the bottom of the trays is constituted by one of the bars 36.

Le guide 56 est fixé dans le plan longitudinal médian de la machine si les deux petites barquettes sont identiques mais on conçoit qu'il est possible, dans le cas contraire, de le déporter latéralement par rapport au plan médian.The guide 56 is fixed in the median longitudinal plane of the machine if the two small trays are identical but it is understood that it is possible, if not, to offset it laterally relative to the median plane.

Bien entendu,la présente invention ne se limite pas au mode de réalisation décrit et représenté mais s'étend, au contraire, à toutes variantes de formes et dimensions.Of course, the present invention is not limited to the embodiment described and shown but extends, on the contrary, to all variants of shapes and dimensions.

Claims (15)

1-Machine pour obturer, à l'aide d'un film plastique ou analogue, des récipients tels que des barquettes rectangulaires présentant une collerette périphérique,caractérisée en ce que les barquettes reposent par deux de leurs bords opposés sur des guides (7) parallèles dont l'écartement est réglable.1-Machine for closing, using a plastic film or the like, containers such as rectangular trays having a peripheral flange, characterized in that the trays rest by two of their opposite edges on guides (7) parallel whose spacing is adjustable. 2-Machine selon la revendication 1, caractérisée en ce que l'obturation de chaque barquette s'effectue en deux temps, un premier temps où l'on scelle sa partie postérieure puis un second temps où l'on scelle sa partie antérieure.2-machine according to claim 1, characterized in that the sealing of each tray is carried out in two stages, firstly where one seals its posterior part and then a second time where one seals its front part. 3-Machine selon l'une quelconque des revendications 1 et 2, caractérisée en ce que le fond des barquettes repose sur une surface d'appui mobile en hauteur et constituée dans sa forme la plus simple par deux barres parallèles (36).3-Machine according to any one of claims 1 and 2, characterized in that the bottom of the trays rests on a movable support surface in height and formed in its simplest form by two parallel bars (36). 4-Machine selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les guides sont interrompus en un point de leur longueur pour permettre le passage d'une enclume (20) mobile en hauteur située sous une plaque chauffante (21) et permettant de sceller les bords transversaux des barquettes.4-machine according to any one of claims 1 to 3, characterized in that the guides are interrupted at a point along their length to allow the passage of an anvil (20) movable in height located under a heating plate (21) and for sealing the transverse edges of the trays. 5-Machine selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les guides (7) sont portés par un cadre (4) pouvant être déplacé longitudinalement sous l'action,par exemple, d'un vérin (5) entre deux positions dont l'une correspond à une des deux positions extrêmes de la tige dudit vérin tandis que l'autre est constituée par une butée (6) réglable, dont la position dépend de la longueur des barquettes à sceller et de la largeur de l'enclume (20).5-machine according to any one of claims 1 to 4, characterized in that the guides (7) are carried by a frame (4) which can be moved longitudinally under the action, for example, of a jack (5) between two positions, one of which corresponds to one of the two extreme positions of the rod of said jack, while the other consists of an adjustable stop (6), the position of which depends on the length of the trays to be sealed and the width of the anvil (20). 6-Machine selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'interruption prévue à la revendication 4, délimite sur chaque guide (7),deux segments de guidage (7a-7b), le segment antérieur (7a) étant formé par le côté supérieur d'un cadre rectangulaire dont le côté inférieur (7'a) s'étend au-delà du cadre pour supporter deux plaques (10) parallèles et rectangulaires dont les chants supérieurs forment le segment postérieur (7b) en combinaison avec des barres (11) insérées entre elles et fixées longitudinalement par rapport au bâti (1) de la machine.6-machine according to any one of claims 1 to 5, characterized in that the interruption provided for in claim 4, delimits on each guide (7), two guide segments (7a-7b), the anterior segment (7a ) being formed by the upper side of a rectangular frame whose lower side (7'a) extends beyond the frame to support two parallel and rectangular plates (10) whose upper edges form the posterior segment (7b) in combination with bars (11) inserted between them and fixed longitudinally with respect to the frame (1) of the machine. 7-Machine selon l'une quelconque des revendications 1 à 6,caractérisée en ce que la plaque chauffante (21) est supportée par deux colonnes 22 traversant le cadre (4) et fixées par leurs extrémités inférieures sur une traverse (23) supportant le corps d'un vérin (24) dont l'extrémité de la tige de piston est reliée à une traverse (25),guidée sur lesdites colonnes (22) et supportant l'enclume (20),lesdites colonnes présentant, en outre, des épaulements sous lesquels prennent appui des ressorts (28) reposant sur le cadre 4.7-Machine according to any one of claims 1 to 6, characterized in that the heating plate (21) is supported by two columns 22 passing through the frame (4) and fixed by their lower ends on a crosspiece (23) supporting the body of a jack (24), the end of the piston rod of which is connected to a cross-member (25), guided on said columns (22) and supporting the anvil (20), said columns further having shoulders under which springs (28) rest on the frame 4. 8-Machine selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le dévidoir sur lequel est enroulé le film obturateur est porté par le cadre 4.8-Machine according to any one of claims 1 to 7, characterized in that the reel on which the shutter film is wound is carried by the frame 4. 9-Machine selon l'une quelconque des revendications 1 à 8, caractérisée en ce que des moyens sont prévus pour fixer momentanément le film F par rapport au bâti lors du recul du cadre et après l'obturation de la partie postérieure d'une barquette.9-machine according to any one of claims 1 to 8, characterized in that means are provided for temporarily fixing the film F relative to the frame when the frame recedes and after the closure of the rear part of a tray . 10-Machine selon l'une quelconque des revendications 1 à 9, caractérisée en ce que chacune des barres d'appui 36 repose librement par son extrémité antérieure (38) sur une barre transversale 39, réunissant les extrémités des deux biellettes (40) et coulisse par son extrémité postérieure (42) dans une glissière (43) rendue solidaire du côté supérieur horizontal d'un parallélogramme déformable relié par une bielle (49) aux biellettes (40).10-machine according to any one of claims 1 to 9, characterized in that each of the support bars 36 rests freely by its front end (38) on a transverse bar 39, joining the ends of the two rods (40) and slides by its rear end (42) in a slide (43) made integral with the horizontal upper side of a deformable parallelogram connected by a connecting rod (49) to the connecting rods (40). Il-Machine selon l'une quelconque des revendications 1 à lO,caractérisée en ce que les glissières (43) forment le prolongement de l'armature d'un tapis sans fin (37) prolongeant les barres d'appui (36).Il-Machine according to any one of claims 1 to 10, characterized in that the slides (43) form the extension of the frame of an endless belt (37) extending the support bars (36). 12-Machine selon l'une quelconque des revendications 1 à 11, caractérisée en ce que les barres d'appui (36) sont liées en translation au cadre (4).12-Machine according to any one of claims 1 to 11, characterized in that the support bars (36) are connected in translation to the frame (4). 13-Machine selon l'une quelconque des revendications 1 à 12, caractérisée en ce que le positionnement de chaque barquette sous la plaque chauffante (21) est assuré par une butée réglable (29).13-Machine according to any one of claims 1 to 12, characterized in that the positioning of each tray under the heating plate (21) is provided by an adjustable stop (29). 14-Machine selon l'une quelconque des revendications 1 à 13 ,caractérisée en ce que le réglage de la butée (29), des barquettes et celui de la butée (6) du cadre est effectué à l'aide d'une vis présentant deux filetages (31-32) à pas contraires.14-machine according to any one of claims 1 to 13, characterized in that the adjustment of the stop (29), trays and that of the stop (6) of the frame is carried out using a screw having two threads (31-32) with opposite pitch. 15-Machine selon l'une quelconque des revendications 1 à 14, caractérisée en ce qu'elle comporte, entre les guides (7), un guide (56) identique mais fixe par rapport au cadre.15-Machine according to any one of claims 1 to 14, characterized in that it comprises, between the guides (7), a guide (56) identical but fixed relative to the frame.
EP84401947A 1983-10-07 1984-09-28 Machine for closing receptacles with a film Expired EP0138689B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401947T ATE31688T1 (en) 1983-10-07 1984-09-28 MACHINE FOR CLOSING CONTAINERS USING A FILM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8315978 1983-10-07
FR8315978A FR2553059B1 (en) 1983-10-07 1983-10-07 MACHINE FOR SEALING CONTAINERS USING A FILM

Publications (3)

Publication Number Publication Date
EP0138689A2 true EP0138689A2 (en) 1985-04-24
EP0138689A3 EP0138689A3 (en) 1985-06-26
EP0138689B1 EP0138689B1 (en) 1988-01-07

Family

ID=9292923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401947A Expired EP0138689B1 (en) 1983-10-07 1984-09-28 Machine for closing receptacles with a film

Country Status (4)

Country Link
EP (1) EP0138689B1 (en)
AT (1) ATE31688T1 (en)
DE (1) DE3468391D1 (en)
FR (1) FR2553059B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2853627A1 (en) * 2003-04-10 2004-10-15 Nijal Machine for packing food, e.g. sausage, in container, has food filling station with, at blocking device output, conveyor with two lateral surfaces for driving containers and regulating device for adjusting position of one lateral surface

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792567A (en) * 1971-12-07 1974-02-19 Dixie Packaging Co Inc Heat sealing machine
US3908342A (en) * 1973-10-26 1975-09-30 Fmc Corp Heat sealing machine
FR2332178A1 (en) * 1975-11-19 1977-06-17 Latoud Michel Closing machine for food containers - has plastic sheet guide rollers with crank handle and heating station for seal application

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792567A (en) * 1971-12-07 1974-02-19 Dixie Packaging Co Inc Heat sealing machine
US3908342A (en) * 1973-10-26 1975-09-30 Fmc Corp Heat sealing machine
FR2332178A1 (en) * 1975-11-19 1977-06-17 Latoud Michel Closing machine for food containers - has plastic sheet guide rollers with crank handle and heating station for seal application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2853627A1 (en) * 2003-04-10 2004-10-15 Nijal Machine for packing food, e.g. sausage, in container, has food filling station with, at blocking device output, conveyor with two lateral surfaces for driving containers and regulating device for adjusting position of one lateral surface

Also Published As

Publication number Publication date
EP0138689B1 (en) 1988-01-07
FR2553059B1 (en) 1986-08-01
ATE31688T1 (en) 1988-01-15
DE3468391D1 (en) 1988-02-11
EP0138689A3 (en) 1985-06-26
FR2553059A1 (en) 1985-04-12

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