EP0069011A1 - Apparatus for applying and centering a thermoplastics sleeve around an article by means of a vertical member provided with a floating mandrel - Google Patents

Apparatus for applying and centering a thermoplastics sleeve around an article by means of a vertical member provided with a floating mandrel Download PDF

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Publication number
EP0069011A1
EP0069011A1 EP82401153A EP82401153A EP0069011A1 EP 0069011 A1 EP0069011 A1 EP 0069011A1 EP 82401153 A EP82401153 A EP 82401153A EP 82401153 A EP82401153 A EP 82401153A EP 0069011 A1 EP0069011 A1 EP 0069011A1
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EP
European Patent Office
Prior art keywords
mandrel
sheath
rollers
vertically movable
movable member
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Granted
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EP82401153A
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German (de)
French (fr)
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EP0069011B1 (en
Inventor
Jacques Fresnel
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Individual
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Individual
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Priority to AT82401153T priority Critical patent/ATE16374T1/en
Publication of EP0069011A1 publication Critical patent/EP0069011A1/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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/14—Devices for distending tubes supplied in the flattened state
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53987—Tube, sleeve or ferrule

Definitions

  • the present invention relates to the field of equipment intended for laying around objects, including various containers and containers, of sections of sheath or sleeves derived from a flat sheath of heat-shrinkable plastic. It especially relates to a process of the floating mandrel type for fitting and centering sleeves, in an automatic machine supplied with a flat continuous sheath of heat-shrinkable plastic, whether or not printed.
  • the machine for fitting sleeves from a continuous thermoplastic sheath is constituted by a vertical assembly with floating mandrel provided with a narrowing over its length where it is supported by the cooperation of bearings and rollers-supports with the aim of continuously ensuring the following operations: widening of the continuous flat sheath from a roll feed, introduction onto the mandrel, downward transfer of the shaped sheath, cutting of the latter into sheath sections or sleeves of adequate predetermined length and removal of the sleeves around the containers to be coated and / or decorated (French patent application No. 80 20 301 of September 22, 1980).
  • the object of the invention is to obviate the aforementioned drawbacks and to solve the delicate technical problem of the continuity to be ensured between the mandrel and the container to be sleeved when the sheath is lowered onto the container of special conformation mentioned above. It also aims to ensure very good centering of this receptacle under the mandrel intended for the removal of the sheath.
  • the invention proposes an improvement to the floating mandrel of known type containing in its hollow lower part a movable part at the end of which is fixed an imprint intended to come over the head of the object to be sleeved.
  • a movable part at the end of which is fixed an imprint intended to come over the head of the object to be sleeved.
  • the up-down operations of the movable part and its imprint within the floating mandrel are carried out from the outside of this mandrel and during the descent of the sheath by exclusively mechanical means.
  • the movable part internal to the mandrel and terminated by the impression on the outside of the latter, consists of a spring rod provided with first elements, arranged in an opening of the mandrel, suitable to cooperate by contact with second elements actuated from the outside to come to bear, at a predetermined rate, on said first elements.
  • each group of said elements consists of rollers or bearings which, when brought into contact for a predetermined time, bring down the sheath which surrounds the mandrel as well as the moving part and its imprint of so that the latter comes to cap the container ensuring its centering.
  • the device is part, as the main member, of an automatic machine continuously supplied by a flat sheath of heat-shrinkable plastic and intended to carry out the successive operations of opening the sheath, transfer thereof to a cylindrical mandrel here with speed programming, removal and cutting of the sheath into sections or sleeves of predetermined length around the container to be sleeved then heat shrinking with a heating device mounted for example on an endless conveyor.
  • the sheath supply means and those for heat shrinking can be, for example, those described in European patent No. 0 000 851.
  • the floating mandrel 1 is designed according to a known general principle described in French patent application No. 80.20301. Inside the constriction 2, the drive drive wheels 3 and 4 come into contact with the bearings of the abutment 5 and 6 and serve both to keep the mandrel 1 in vertical lift and to drive the thermoplastic sheath 7 towards the bottom.
  • the part of the mandrel located under the constriction 2 is hollow and provided with a movable part, for example here of the piston type 8 at the lower end of which is fixed a hollow imprint 9 intended to see the head of the object to be capped. sleeving (not shown).
  • the movement of this piston was controlled by induction by means of an electrostatic coil of dimension slightly greater than the mandrel.
  • the moving part is driven from outside the mandrel by purely mechanical means.
  • the rod 10 of the movable part provided at its lower part with a spring sheath 11, comprises a pair of rollers 12 (only one is shown in Figure 1) which cooperate , by momentary contact, with the rollers 13 operated from the outside of the mandrel, the latter having a recess 14 in the zone of action of said rotary elements.
  • the internal movable part is driven from the outside with its centering imprint 9 in an up and down movement, at a predetermined rate, with automatic return to the high position by the action. of spring 11.
  • the rollers 13 are carried by support arms / which, by virtue of an associated device provided with a cam and not shown here, perform a so-called "square" movement comprising the following phases: approaching the mandrel horizontally until contact with the rollers 13 and rollers 12, descent along the mandrel during the pressing of 13 on 12 (the sheath 7 moving between these two bearings), then spacing horizontal of the arms 15 to allow the imprint 9 to rise on the base of the mandrel 1 by the action of the spring 11 and, finally, rise of the support arms 15; the cycle repeating again as said above.
  • the distance or value of spacing of the arms 15 is adjustable as a function of the diameter of the mandrel and the length of descent of the arms along the mandrel is that corresponding to the distance between the head and the body of the container to be sleeved.
  • the output of the impression 9 from the base of the mandrel 1 takes place just before the triggering of the descent of the sheath 7 on the mandrel. Once this descent is started, the container is capped over the impression with the sheath, the support arms (15) are moved aside and, under the effect of the spring 11, the impression - comes to you. put back on the mandrel.
  • This critical point can correspond for example to the distance between the head and the body of the container or even to a particular conformation of the top of the container (seiti of a can ... etc). Cutting the sheath into sections or sleeves by a device already known per se and not shown (see for example patent above) is carried out when the sheath has arrived at the bottom of the container.
  • the timing of the internal movable part of the mandrel is ensured, at the level of the piston 8, by a double set of lip seals 16 and 17 - clearly visible in FIG. 3 - which oppose the ascent immediate of the rod 10 when the imprint 9 is in a timed position for capping the container to be sleeved.
  • This seal device can be replaced by a system with equivalent function, such as for example a counterweight with thread.
  • the support arm 15 may not pivot and move away from the mandrel 1 during the ascent of the imprint 9.
  • the caster 13 remains permanently in contact with the roller 12 not only during the descent of the sleeve but also during the ascent of the footprint 9. In such an operation, it is the power of the spring 11 which allows the contact between 12 and 13 to be maintained.
  • the support arm 15 can no longer be connected to a single caster 13 but to two casters, high and low, numbered 13 and 13 ′ and which trap the internal roller 12, the upper roller 13 ensuring the descent of the sleeve while the lower roller 13 'ensures the ascent of the imprint or cap after depositing the sleeve on the container.
  • the return spring II of the imprint 9 can be omitted and a series of double rollers and of the roller can be provided either on one side of the mandrel (as in FIG. 6) or on two opposite sides on the same horizontal plane.
  • the aforementioned systems of support arms / rollers / rollers can no longer be arranged below all of the bearings (designated 3-4; 5-6) which are used to hold the mandrel (1) in vertical lift but just as well above this assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Insulating Bodies (AREA)
  • Pens And Brushes (AREA)

Abstract

An apparatus for fitting and centering a sheath such as a thermoplastic sleeve about an object comprises a vertically floating mandrel about which the sheath is fed downwardly toward the object which is to be sheathed. The mandrel is provided with a hollow passage in its lower portion to receive a normally vertically movable member, the vertically movable member carrying at its normally lower end a mold member adapted to engage the head of the object which is to be sheathed, so as to guide and center the transfer of the sheath to the object. The mandrel is provided with a recess opening inwardly from its exterior periphery and into communication with the hollow passage providing a first element lying in the recess and connected to the vertically movable member, so that movement imparted to the first element and causes movement of the vertically movable member, a second element, a drive means located exteriorly of the mandrel for driving the second element. The drive means is operable to move the second element from a location exterior of the mandrel into engagement with the first element, and for subsequently moving the second element while in engagement with the first element to cause lowering of the vertically movable member and the mold member carried by the vertically movable member from an initial elevated position, thereby causing the mold member to engage the head of the object which is to be sheathed.

Description

La présente invention a trait au domaine des appareillages destinés à la pose autour d'objets, dont récipients et conteneurs divers, de tronçons de gaine ou manchons issus d'une gaine plate en matière plastique thermorétractable . Elle concerne tout spécialement un procédé du type à mandrin flottant pour la pose et le centrage de manchons, dans une machine automatique alimentée en gaine continue plate de matière plastique thermorétractable, imprimée ou non.The present invention relates to the field of equipment intended for laying around objects, including various containers and containers, of sections of sheath or sleeves derived from a flat sheath of heat-shrinkable plastic. It especially relates to a process of the floating mandrel type for fitting and centering sleeves, in an automatic machine supplied with a flat continuous sheath of heat-shrinkable plastic, whether or not printed.

On sait que de nombreuses étapes opératoires sont nécessaires pour passer, dans la technique susvisée, de la feuille mince en matière plastique thermorétractable (par exemple en chlorure de polyvinyle) et conformée en gaine plate ou fourreau continu, jusqu'au conteneur muni de son habillage, généralement décoré.It is known that numerous operational steps are necessary to pass, in the abovementioned technique, from the thin sheet of heat-shrinkable plastic material (for example polyvinyl chloride) and shaped in a flat sheath or continuous sheath, to the container provided with its covering. , usually decorated.

Diverses machines ont été décrites pour automatiser ces étapes, comme par exemple l'appareillage qui fait l'objet du brevet européen publié sous le n° 0 000 851 (dépôt n° 78 400 045.7). Selon une réalisation particulièrement avantageuse, la machine de pose de manchons à partir d'une gaine continue thermoplastique est constituée par un ensemble vertical à mandrin flottant munie d'un rétrécissement sur sa longueur où il est soutenu par la coopération de roulements et galets- supports dans le but d'assurer en continu les opérations suivantes : élargissement de la gaine continue plate issue d'une alimentation en rouleaux, introduction sur le mandrin, transfert vers le bas de la gaine conformée, découpe de celle-ci en tronçons de gaine ou manchons de longueur adéquate prédéterminée et dépose des manchons autour des récipients à revêtir et/ou à décorer (demande de brevet français n° 80 20 301 du 22 septembre 1980).Various machines have been described for automating these steps, such as for example the apparatus which is the subject of the European patent published under the number 0 000 851 (deposit n ° 78 400 045.7). According to a particularly advantageous embodiment, the machine for fitting sleeves from a continuous thermoplastic sheath is constituted by a vertical assembly with floating mandrel provided with a narrowing over its length where it is supported by the cooperation of bearings and rollers-supports with the aim of continuously ensuring the following operations: widening of the continuous flat sheath from a roll feed, introduction onto the mandrel, downward transfer of the shaped sheath, cutting of the latter into sheath sections or sleeves of adequate predetermined length and removal of the sleeves around the containers to be coated and / or decorated (French patent application No. 80 20 301 of September 22, 1980).

Un tel ensemble à mandrin flottant donne satisfaction et autorise de très grandes cadences de pose de manchons. Toutefois, la fiabilité d'un parfait transfert de la gaine (avant découpe) sur le récipient n'est pas totale dans un certain nombre de cas. Par exemple, le récipient peut ne pas être parfaitement centré sous le mandrin. D'autre part, il se pose des problèmes lorsque la forme du récipient est telle que la distance entre la base du mandrin et le haut du corps du récipient est assez importante (par exemple bouteille à col ou goulot) ; ou encore lorsque le diamètre du récipient est maximum sur le haut (par exemple serti d'une boîte de conserve), ce qui nécessite une ouverture maximum du tronçon de gaine au moment de la pose et entraîne alors des difficultés pour l'ajustage de ce tronçon autour du récipient de diamètre très légèrement inférieur.Such a floating mandrel assembly is satisfactory and allows very high rates of fitting sleeves. However, the reliability of a perfect transfer of the sheath (before cutting) on the container is not total in a certain number of cases. For example, the container may not be perfectly centered under the mandrel. On the other hand, problems arise when the shape of the container is such that the distance between the base of the mandrel and the top of the body of the container is quite large (for example neck bottle or neck); or even when the diameter of the container is maximum on the top (for example set with a tin can), which requires a maximum opening of the sheath section at the time of installation and then causes difficulties. tees for adjusting this section around the container with a slightly smaller diameter.

L'invention a pour but d'obvier aux inconvénients précités et de résoudre le délicat problème technique de la continuité à assurer entre le mandrin et le récipient à manchonner au moment de la descente de gaine sur le récipient de conformation spéciale susmentionnée. Elle vise en outre à assurer un très bon centrage de ce réceptacle sous le mandrin destiné à la dépose de gaine.The object of the invention is to obviate the aforementioned drawbacks and to solve the delicate technical problem of the continuity to be ensured between the mandrel and the container to be sleeved when the sheath is lowered onto the container of special conformation mentioned above. It also aims to ensure very good centering of this receptacle under the mandrel intended for the removal of the sheath.

Pour résoudre ce problème, l'invention propose un perfectionnement au mandrin flottant de type connu renfermant dans sa partie inférieure creuse une pièce mobile à l'extrémité de laquelle est fixée une empreinte destinée à venir coiffer la tête de l'objet à manchonner. On sait, d'après les brevets rappelés ci-dessus, que le déplacement de cette pièce peut être assuré par des moyens tels que : un soufflage d'air comprimé ou encore la mise en oeuvre d'électro-aimants de dimension extrêmement précises, ce qui conduit à une mise en oeuvre délicate et manquant de souplesse.To solve this problem, the invention proposes an improvement to the floating mandrel of known type containing in its hollow lower part a movable part at the end of which is fixed an imprint intended to come over the head of the object to be sleeved. We know, from the patents mentioned above, that the movement of this part can be ensured by means such as: blowing of compressed air or even the use of electromagnets of extremely precise dimension, which leads to a delicate implementation and lacking flexibility.

Selon le nouveau procédé de l'invention, les opérations de montée-descente de la pièce mobile et de son empreinte au sein du mandrin flottant sont conduites depuis l'extérieur de ce mandrin et pendant la descente de la gaine par des moyens exclusivement mécaniques.According to the new method of the invention, the up-down operations of the movable part and its imprint within the floating mandrel are carried out from the outside of this mandrel and during the descent of the sheath by exclusively mechanical means.

Dans une disposition avantageuse de réalisation du procédé, la pièce mobile, interne au mandrin et terminée par l'empreinte à l'extérieur de ce dernier, est constituée par une tige à ressort munie de premiers éléments, disposés dans une ouverture du mandrin, aptes à coopérer par contact avec de seconds éléments actionnés de l'extérieur pour venir en appui, à cadence prédéterminée, sur lesdits premiers éléments.In an advantageous arrangement for carrying out the process, the movable part, internal to the mandrel and terminated by the impression on the outside of the latter, consists of a spring rod provided with first elements, arranged in an opening of the mandrel, suitable to cooperate by contact with second elements actuated from the outside to come to bear, at a predetermined rate, on said first elements.

Ces éléments intérieurs et extérieurs au mandrin et à mouvements coordonnes entre eux peuvent revêtir diverses formes. Par exemple, on peut prévoir des patins ou objets similaires dont la surface a un faible coefficient de friction. Selon un mode d'exécution particulièrement intéressant, chaque groupe desdits éléments est constitué par des galets ou roulements qui, lors de leur mise en contact pendant un temps prédéterminé, font descendre la gaine qui entoure le mandrin ainsi que la pièce mobile et son empreinte de façon que cette dernière vienne coiffer le récipient en assurant son centrage.These elements, internal and external to the mandrel and with movements coordinated with each other, can take various forms. For example, one can provide skids or similar objects whose surface has a low coefficient of friction. According to a particularly advantageous embodiment, each group of said elements consists of rollers or bearings which, when brought into contact for a predetermined time, bring down the sheath which surrounds the mandrel as well as the moving part and its imprint of so that the latter comes to cap the container ensuring its centering.

L'invention sera mieux comprise par la description détaillée de modes de réalisation non limitatifs illustrés par les dessins annexés qui représentent schématiquement

  • . Figure 1 : une vue de profil, partiellement en coupe, d'un mandrin flottant muni de perfectionnements selon l'invention :
  • . Figure 2 : une vue agrandie, de face de la partie A de la figure 1
  • . Figure 3 : une vue de détail, agrandie, de la zone B de la figure 1
  • . Figure 4 : la représentation schématique, de profil, de ladite partie A avec indication de moyens mécaniques extérieurs au mandrin destinés à entraîner la pièce mobile à empreinte à l'intérieur de celui-ci.
  • . Figures 5 et 6: diverses variantes de réalisation des parties médiane et inférieure du dispositif de la figure 1.
The invention will be better understood from the detailed description of nonlimiting embodiments illustrated by the appended drawings which schematically represent
  • . Figure 1: a side view, partially in section, of a floating mandrel provided with improvements according to the invention:
  • . Figure 2: an enlarged front view of part A of Figure 1
  • . Figure 3: an enlarged detail view of area B in Figure 1
  • . Figure 4: the schematic representation, in profile, of said part A with indication of mechanical means external to the mandrel intended to drive the movable part with impression inside of it.
  • . Figures 5 and 6: various alternative embodiments of the middle and lower parts of the device of Figure 1.

Tel que représneté sur la figure 1, le dispositif fait partie, en tant qu'organe principal, d'une machine automatique alimentée en continu par une gaine plate en matière plastique thermorétractable et destinée a effectuer les opérations successives d'ouverture de la gaine, transfert de celle-ci sur un mandrin ici cylindrique avec programmation de vitesse, dépose et découpe de la gaine en tronçons ou manchons de longueur prédéterminée autour du récipient à manchonner puis thermorétraction avec un dispositif de chauffage monté par exemple sur un convoyeur sans fin. Les moyens d'alimentation en gaine et ceux de thermorétraction peuvent être, par exemple, ceux décrits dans le brevet européen N°0 000 851.As shown in FIG. 1, the device is part, as the main member, of an automatic machine continuously supplied by a flat sheath of heat-shrinkable plastic and intended to carry out the successive operations of opening the sheath, transfer thereof to a cylindrical mandrel here with speed programming, removal and cutting of the sheath into sections or sleeves of predetermined length around the container to be sleeved then heat shrinking with a heating device mounted for example on an endless conveyor. The sheath supply means and those for heat shrinking can be, for example, those described in European patent No. 0 000 851.

Le mandrin flottant 1, dont on voit les parties médiane et inférieure sur la figure 1, est conçu selon un principe général connu décrit dans la demande de brevet français n°80.20301. A l'intérieur du rétrécissement 2, leseoulettes d'entraînement motrices 3 et 4 viennent en contact avec les roulements du contre-appui 5 et 6 et servent à la fois à maintenir en sustentation verticale le mandrin 1 et à entraîner la gaine thermoplastique 7 vers le bas. La partie du mandrin située sous le rétrécissement 2 est creuse et munie d'une pièce mobile par exemple ici du type piston 8 à l'extrémité inférieure de laquelle est fixée une empreinte en creux 9 destinée à voir coiffer la tête de l'objet à manchonner (non représenté). Dans le brevet français précité, le mouvement de ce piston était commandé par induction au moyen d'une bobine électrostatique de dimension légèrement supérieure au mandrin.The floating mandrel 1, the middle and bottom parts of which can be seen in FIG. 1, is designed according to a known general principle described in French patent application No. 80.20301. Inside the constriction 2, the drive drive wheels 3 and 4 come into contact with the bearings of the abutment 5 and 6 and serve both to keep the mandrel 1 in vertical lift and to drive the thermoplastic sheath 7 towards the bottom. The part of the mandrel located under the constriction 2 is hollow and provided with a movable part, for example here of the piston type 8 at the lower end of which is fixed a hollow imprint 9 intended to see the head of the object to be capped. sleeving (not shown). In the aforementioned French patent, the movement of this piston was controlled by induction by means of an electrostatic coil of dimension slightly greater than the mandrel.

Conformément à l'invention, la pièce mobile est entraînée depuis l'extérieur du mandrin par des moyens purement mécaniques. Dans le cas illustré sur les figures 1 à 4, la tige 10 de la partie mobile, munie à sa partie inférieure d'une gaine à ressort 11, comporte une paire de galets 12 (un seul est représenté sur la figure 1) qui coopèrent, par un contact momentané, avec les roulettes 13 manoeuvrées de l'extérieur du mandrin, ce dernier présentant un évidement 14 dans la zone d'action desdits éléments rotatifs. Ainsi, le mandrin restant fixe en position pendant le travail, la pièce mobile interne est entraînée de l'extérieur avec son empreinte de centrage 9 dans un mouvement de haut en bas, à cadence prédéterminée, avec rappel automatique en position haute par l'action du ressort 11.According to the invention, the moving part is driven from outside the mandrel by purely mechanical means. In the case illustrated in Figures 1 to 4, the rod 10 of the movable part, provided at its lower part with a spring sheath 11, comprises a pair of rollers 12 (only one is shown in Figure 1) which cooperate , by momentary contact, with the rollers 13 operated from the outside of the mandrel, the latter having a recess 14 in the zone of action of said rotary elements. Thus, the mandrel remaining fixed in position during work, the internal movable part is driven from the outside with its centering imprint 9 in an up and down movement, at a predetermined rate, with automatic return to the high position by the action. of spring 11.

Comme on peut le voir sur la figure 4 très schématique, 15 les roulettes 13 sont portées par des bras-suppôrts/qui, grâce à un dispositif associé muni d'une came et non représenté ici, effectuent un mouvement dit "carré" comportant les phases suivantes : approche du mandrin à l'horizontale jusqu'à contact des roulettes 13 et galets 12, descente le long du mandrin pendant l'appui de 13 sur 12 (la gaine 7 défilant entre ces deux roulements), puis écartement à l'horizontale des bras 15 pour laisser remonter l'empreinte 9 sur la base du mandrin 1 par l'action du ressort 11 et, enfin, remontée des bras-supports 15 ; le cycle recommençant à nouveau comme dit ci-dessus. La distance ou valeur d'écartement des bras 15 est réglable en fonction du diamètre du mandrin et la longueur de descente des bras le long du mandrin est celle correspondant à la distance entre la tête et le corps du récipient à manchonner.As can be seen in very diagrammatic FIG. 4, the rollers 13 are carried by support arms / which, by virtue of an associated device provided with a cam and not shown here, perform a so-called "square" movement comprising the following phases: approaching the mandrel horizontally until contact with the rollers 13 and rollers 12, descent along the mandrel during the pressing of 13 on 12 (the sheath 7 moving between these two bearings), then spacing horizontal of the arms 15 to allow the imprint 9 to rise on the base of the mandrel 1 by the action of the spring 11 and, finally, rise of the support arms 15; the cycle repeating again as said above. The distance or value of spacing of the arms 15 is adjustable as a function of the diameter of the mandrel and the length of descent of the arms along the mandrel is that corresponding to the distance between the head and the body of the container to be sleeved.

En pratique, la sortie de l'empreinte 9 hors de la base du mandrin 1 s'effectue juste avant le déclenchement de la descente de la gaine 7 sur le mandrin. Une fois que cette descente est mise en route, on coiffe le récipient par dessus l'empreinte avec la gaine, on écarte les bras-supports (15) et, sous l'effet du ressort 11, l'emprein--te vient se recoller sur le mandrin.In practice, the output of the impression 9 from the base of the mandrel 1 takes place just before the triggering of the descent of the sheath 7 on the mandrel. Once this descent is started, the container is capped over the impression with the sheath, the support arms (15) are moved aside and, under the effect of the spring 11, the impression - comes to you. put back on the mandrel.

Lorsque'Iempreinte 9 se trouve coiffée sur le récipient à manchonner, elle doit demeurer un certain temps dans cette position pour permettre à la gaine de passer le point critique dans sa descente le long du récipient. Ce point critique peut correspondre par exemple à la distance entre la tête et le corps du récipient ou encore à une conformation particulière du haut du récipient (seiti d'une boite de conserve...etc). La coupe de la gaine en tronçons ou manchons par un dispositif déjà connu en soi et non représenté (voir par exemple brevet français précité) est effectuée lorsque la gaine est arrivée en bas du récipient.When the impression 9 is capped on the container to be sleeved, it must remain for a certain time in this position to allow the sheath to pass the critical point in its descent along the container. This critical point can correspond for example to the distance between the head and the body of the container or even to a particular conformation of the top of the container (seiti of a can ... etc). Cutting the sheath into sections or sleeves by a device already known per se and not shown (see for example patent above) is carried out when the sheath has arrived at the bottom of the container.

Dans cet exemple de réalisation, la temporisation de la pièce mobile interne au mandrin est assurée, au niveau du piston 8, par un double jeu de joints à lèvres 16 et 17-visibles clairement sur la figure 3 - qui s'opposent à la remontée immédiate de la tige 10 lorsque l'empreinte 9 est en position temporisée de coiffage du récipient à manchonner. Ce dispositif de joints peut être remplacé par un système à fonction équivalente, comme par exemple une masselotte avec pas de vis.In this exemplary embodiment, the timing of the internal movable part of the mandrel is ensured, at the level of the piston 8, by a double set of lip seals 16 and 17 - clearly visible in FIG. 3 - which oppose the ascent immediate of the rod 10 when the imprint 9 is in a timed position for capping the container to be sleeved. This seal device can be replaced by a system with equivalent function, such as for example a counterweight with thread.

D'autres modes de réalisation et variantes entrent dans le cadre du procédé général de l'invention et seront brièvement décrits ci-dessous.Other embodiments and variants fall within the scope of the general method of the invention and will be briefly described below.

Tout d'abord, il est possible de mettre en oeuvre dans le dispositif des figures 1 et 2 une seule série de galet 12 et roulette 13 ainsi qu'un seul bras-support 15 , l'ensemble étant donc aménagé sur un seul côté du mandrin flottant 1.First of all, it is possible to implement in the device of FIGS. 1 and 2 a single series of roller 12 and roller 13 as well as a single support arm 15, the assembly therefore being arranged on one side of the floating chuck 1.

Par ailleurs, le bras support 15 peut ne pas pivoter et s'écarter du mandrin 1 pendant la remontée de l'empreinte 9. Dans ce cas, la roulette 13 reste en permanence en appui sur le galet 12 non seulement pendant la descente du manchon mais aussi pendant la remontée de l'empreinte 9 . Dans une telle opération, c'est la puissance du ressort 11 qui permet le maintien du contact entre 12 et 13. Dans cette variante opérationnelle, on peut prévoir ou bien un seul couple galet/roulette - le galet étant relié au bras-support- ceci d'un seul côté du mandrin flottant, ou bien deux couples dont l'un et l'autre sont disposés de chaque côté de ce mandrin. Une telle réalisation est illustrée sur la figure 5.Furthermore, the support arm 15 may not pivot and move away from the mandrel 1 during the ascent of the imprint 9. In this case, the caster 13 remains permanently in contact with the roller 12 not only during the descent of the sleeve but also during the ascent of the footprint 9. In such an operation, it is the power of the spring 11 which allows the contact between 12 and 13 to be maintained. In this operational variant, it is possible to provide either a single roller / roller couple - the roller being connected to the support arm- this on one side of the floating mandrel, or else two pairs, one and the other are arranged on each side of this mandrel. Such an embodiment is illustrated in FIG. 5.

Conformément à une autre variante particulièrement avantageuse et illustrée sur la figure 6 le bras-support 15 peut être relié non plus à une seule roulette 13 mais à deux roulettes, haute et basse, numérotées 13 et 13' et qui emprisonnent le galet interne 12, la roulette supérieure 13 assurant la descente du manchon alors que la roulette inférieure 13' assure la remontée de l'empreinte ou cape après dépôt du manchon sur le récipient. Dans cette réalisation, le ressort de rappel II de l'empreinte 9 peut être supprimé et l'on peut prévoir une série des double roulettes et du galet soit sur un seul côté du mandrin (comme sur la figure 6) soit sur deux côtés opposés sur le même plan horizontal. La suppression du resssort permet d'éliminer tout phénomène d'inertie et l'empreinte (9) peut rester en contact sur le sommet du récipient tout le temps que l'on désire, ce temps étant déterminé par la came évoquée ci-dessus dont le profil est adapté pour maintenir l'empreinte sur le récipient pendant une période séquentielle prédéterminée. Par ailleurs, le dispositif 8 de la figure 1, pour la temporisation de la pièce mobile du mandrin, n'est alors plus nécessaire.In accordance with another particularly advantageous variant and illustrated in FIG. 6, the support arm 15 can no longer be connected to a single caster 13 but to two casters, high and low, numbered 13 and 13 ′ and which trap the internal roller 12, the upper roller 13 ensuring the descent of the sleeve while the lower roller 13 'ensures the ascent of the imprint or cap after depositing the sleeve on the container. In this embodiment, the return spring II of the imprint 9 can be omitted and a series of double rollers and of the roller can be provided either on one side of the mandrel (as in FIG. 6) or on two opposite sides on the same horizontal plane. The removal of the spring allows eli undermining any phenomenon of inertia and the imprint (9) can remain in contact on the top of the container as long as desired, this time being determined by the cam mentioned above, the profile of which is adapted to maintain the impression on the container for a predetermined sequential period. Furthermore, the device 8 of FIG. 1, for delaying the moving part of the mandrel, is then no longer necessary.

Enfin, selon une autre variante encore du dispositif schématisé sur la figure 1, les systèmes précités de bras-support/ galets/roulettes peuvent être disposés non plus au-dessous de l'ensemble des roulements (dénommés 3-4 ; 5-6) qui servent à maintenir en sustentation verticale le mandrin (1) mais tout aussi bien au-dessus de cet ensemble.Finally, according to yet another variant of the device shown diagrammatically in FIG. 1, the aforementioned systems of support arms / rollers / rollers can no longer be arranged below all of the bearings (designated 3-4; 5-6) which are used to hold the mandrel (1) in vertical lift but just as well above this assembly.

Claims (6)

1. Procédé pour la pose et le centrage d'une gaine et/ ou de manchons thermoplastiques autour d'objets dans lequel on fait appel à un mandrin flottant à la verticale, maintenu en sustentation par des roulements et muni dans sa partie inférieure creuse d'une pièce mobile à l'extrémité de laquelle est fixée une empreinte destinée à coiffer la tête de l'objet à manchonner, le procédé étant caractérisé en ce que la pièce mobile est actionnée depuis l'extérieur, pendant la descente de la gaine autour du mandrin, par des moyens exclusivement mécaniques.1. Method for laying and centering a sheath and / or thermoplastic sleeves around objects in which a vertically floating mandrel is used, held in lift by bearings and provided in its hollow lower part with '' a moving part at the end of which is fixed an imprint intended to cover the head of the object to be sleeved, the method being characterized in that the moving part is actuated from the outside, during the descent of the sheath around of the mandrel, by exclusively mechanical means. 2. Dispositif de mise en oeuvre du procédé selon la revendication 1, caractérisé en ce que la pièce mobile interne au mandrin (1) et terminée à sa base par l'empreinte (9) est montée sur une tige (10) éventuellement pourvue de ressort (11) et se trouve munie de premiers éléments, disposés dans un évidement (14) du mandrin (1), aptes à coopérer par contact avec de seconds éléments actionnés de l'extérieur du mandrin pour venir en appui, à cadence prédéterminée,- sur les premiers éléments.2. Device for implementing the method according to claim 1, characterized in that the movable part internal to the mandrel (1) and terminated at its base by the impression (9) is mounted on a rod (10) optionally provided with spring (11) and is provided with first elements, arranged in a recess (14) of the mandrel (1), capable of cooperating by contact with second elements actuated from outside the mandrel to come into abutment, at predetermined rate, - on the first elements. 3. Dispositif selon la revendication 2, caractérisé en ce que les premiers éléments sont constitués par des galets (12) qui coopèrent momentanément avec les seconds éléments représentés par des roulettes (13) montées sur des bras-supports (15)3. Device according to claim 2, characterized in that the first elements consist of rollers (12) which momentarily cooperate with the second elements represented by rollers (13) mounted on support arms (15) 4. Dispositif selon la revendication 3, caractérisé en ce que les bras-supports (15) sont à pivotement, aptes à s'écarter du mandrin puis à revenir en position de contact entre les galets (12) et les roulettes (13) à cadence prédéterminée.`4. Device according to claim 3, characterized in that the support arms (15) are pivotable, capable of moving away from the mandrel and then returning to the position of contact between the rollers (12) and the rollers (13) at predetermined rate. 5. Dispositif selon la revendication 3, caractérisé en ce que les bras-supports (15) sont reliés à deux roulettes (13,13') qui opèrent de part et d'autre, par contact, avec le galet (12)5. Device according to claim 3, characterized in that the support arms (15) are connected to two rollers (13,13 ') which operate on either side, by contact, with the roller (12) 6. Dispositif selon la revendication 5, caractérisé en ce que l'ensemble bras-support (15) - roulettes (15,13') - galet (12) est installé d'un seul côté du mandrin (1), au-dessous ou au-dessus du système de sustentation dudit mandrin.6. Device according to claim 5, characterized in that the arm-support assembly (15) - rollers (15,13 ') - roller (12) is installed on one side of the mandrel (1), below or above the lift system of said mandrel.
EP82401153A 1981-07-01 1982-06-23 Apparatus for applying and centering a thermoplastics sleeve around an article by means of a vertical member provided with a floating mandrel Expired EP0069011B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401153T ATE16374T1 (en) 1981-07-01 1982-06-23 DEVICE FOR ATTACHING AND CENTERING A THERMOPLASTIC HOSE AROUND OBJECTS BY A VERTICAL ELEMENT WITH FLOATING PIN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8112924 1981-07-01
FR8112924A FR2508841A1 (en) 1981-07-01 1981-07-01 METHOD AND APPARATUS FOR INSTALLING AND CENTERING THERMORETRACTABLE SHEATH AROUND OBJECTS USING A VERTICAL FLOATING CHUCK ASSEMBLY

Publications (2)

Publication Number Publication Date
EP0069011A1 true EP0069011A1 (en) 1983-01-05
EP0069011B1 EP0069011B1 (en) 1985-11-06

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EP82401153A Expired EP0069011B1 (en) 1981-07-01 1982-06-23 Apparatus for applying and centering a thermoplastics sleeve around an article by means of a vertical member provided with a floating mandrel

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US (1) US4600371A (en)
EP (1) EP0069011B1 (en)
AT (1) ATE16374T1 (en)
CA (1) CA1202460A (en)
DE (1) DE3267270D1 (en)
ES (1) ES513612A0 (en)
FR (1) FR2508841A1 (en)
PT (1) PT75158B (en)

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JPH0613332B2 (en) * 1987-11-20 1994-02-23 冨士シール工業株式会社 Tube fitting device for containers
US4922683A (en) * 1988-11-10 1990-05-08 Austin-Gordon Design, Inc. Shrink banding machine
US5737900A (en) * 1995-09-15 1998-04-14 Pdc International Corporation Banding method and apparatus with acceleration of band along floating mandrel aimed toward article to be banded
FR2772344B1 (en) * 1997-12-12 2000-02-04 Sleever Int SLEEVE PLASTIC MACHINE FOR HEAT SHRINKAGE ON OBJECTS FROM CONTINUOUS FLAT WOUND CONTAINER
FR2778890B1 (en) * 1998-05-20 2000-07-07 Sleever Int DEVICE FOR LAYING SLEEVES ON RUNNING OBJECTS
US20070234686A1 (en) * 2004-06-28 2007-10-11 Tien-Sheng Hsieh Guidance device for thermo shrinkable film machine
US7028452B2 (en) * 2004-08-31 2006-04-18 Benison & Co., Ltd. Packaging device for fitting and heat-shrinking packaging film
US8613183B2 (en) * 2010-07-13 2013-12-24 Axon Llc Mandrel for applying and cutting shrink sleeve material to containers
NL2007784C2 (en) * 2011-11-14 2013-05-16 Fuji Seal Europe Bv Sleeving device, method and mandrel for arranging sleeves around products.
NL2007785C2 (en) * 2011-11-14 2013-05-16 Fuji Seal Europe Bv Mandrel to be suspended in a sleeving device for arranging sleeves around containers, sleeving device and method for arranging sleeves around containers.
US20170166339A1 (en) * 2015-12-10 2017-06-15 Allen Plastic Industries Co., Ltd. Shrink wrap machine
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FR2300009A1 (en) * 1975-02-07 1976-09-03 Thimon Sa Packaging batches of bottles - using foil bands cut from lay flat tubes and carrying out all steps at vertical locations above bottles

Also Published As

Publication number Publication date
PT75158B (en) 1984-01-05
ATE16374T1 (en) 1985-11-15
DE3267270D1 (en) 1985-12-12
US4600371A (en) 1986-07-15
FR2508841B3 (en) 1984-04-27
ES8304473A1 (en) 1983-03-16
PT75158A (en) 1982-07-01
FR2508841A1 (en) 1983-01-07
EP0069011B1 (en) 1985-11-06
CA1202460A (en) 1986-04-01
ES513612A0 (en) 1983-03-16

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