FR2713134A1 - Hot air thermo welding device for sealing plastic tubes - Google Patents
Hot air thermo welding device for sealing plastic tubes Download PDFInfo
- Publication number
- FR2713134A1 FR2713134A1 FR9314435A FR9314435A FR2713134A1 FR 2713134 A1 FR2713134 A1 FR 2713134A1 FR 9314435 A FR9314435 A FR 9314435A FR 9314435 A FR9314435 A FR 9314435A FR 2713134 A1 FR2713134 A1 FR 2713134A1
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- France
- Prior art keywords
- nozzle
- heating
- support structure
- housing
- heating element
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
- B29B13/024—Hollow bodies, e.g. tubes or profiles
- B29B13/025—Tube ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
- B29C2035/046—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames dried air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
La présente invention se rapporte à un dispositif de thermosoudage de corps creux souples en matière plastique. En particulier, ce genre de dispositif est utilisé pour l'obturation hermétique de tubes en matière plastique à une de leurs extrémités. L'emploi de ce type de conditionnement est aujourd'hui très répandu en remplacement de l'aluminium et du verre dans de nombreux domaines, pour le conditionnement des produits cosmétiques, pharmaceutiques, agro-alimentaires ou d'autres encore. The present invention relates to a device for heat sealing flexible hollow bodies made of plastic. In particular, this kind of device is used for hermetically sealing plastic tubes at one of their ends. The use of this type of packaging is today very widespread as a replacement for aluminum and glass in many fields, for the packaging of cosmetic, pharmaceutical, food-processing or other products.
Un dispositif classique de thermosoudage met en oeuvre une source de chaleur, par exemple par projection d'air chaud pour ramollir le bord de l'ouverture d'un tube à sceller et une paire de mâchoires en tant qu'organe de pressage pour appliquer fortement les deux moitiés de bord ramollies de l'ouverture l'une contre l'autre. Un scellement hermétique du fond d'un tube est ainsi obtenu. L'ensemble permettant de chauffer le bord du tube comporte généralement un organe de chauffe et une buse adaptée à pénétrer partiellement dans l'ouverture du tube. La plupart des tubes sont cylindriques à leur extrémité à sceller, et de ce fait, la buse présente également une symétrie axiale. La buse doit pénétrer dans le tube en définissant une espace annulaire le plus faible possible pour éviter une trop grande perte de chaleur. Le chauffage s'effectue donc de l'intérieur du tube et le pressage de l'extérieur au moyen des mâchoires. Une période de chauffe de l'ordre de quelques dixièmes de secondes est suffisante pour obtenir le ramollissement souhaité du bord du tube avec une température de chauffe de 500 à 6000C. A conventional heat-sealing device uses a heat source, for example by spraying hot air to soften the edge of the opening of a sealing tube and a pair of jaws as a pressing member for applying strongly the two softened edge halves of the opening against each other. A hermetic seal of the bottom of a tube is thus obtained. The assembly for heating the edge of the tube generally comprises a heating member and a nozzle adapted to partially penetrate the opening of the tube. Most of the tubes are cylindrical at their end to be sealed, and therefore the nozzle also has axial symmetry. The nozzle must penetrate the tube, defining the smallest possible annular space to avoid excessive heat loss. The heating is therefore carried out from the inside of the tube and the pressing from the outside by means of the jaws. A heating period of the order of a few tenths of seconds is sufficient to obtain the desired softening of the edge of the tube with a heating temperature of 500 to 6000C.
Le faible espace annulaire à respecter entre la buse et le tube nécessite d'adapter la buse en fonction du diamètre du tube à sceller. Les diamètres de tube sont très variables, c'est pourquoi, pour chaque modèle de tube, il est indispensable de prévoir une buse de diamètre approprié. Une utilisation fonctionelle de ce type de dispositif de soudage nécessite donc d'avoir à sa disposition un jeu complet de buses de diamètres différents. The small annular space to be respected between the nozzle and the tube requires adapting the nozzle according to the diameter of the tube to be sealed. The tube diameters are very variable, this is why, for each model of tube, it is essential to provide a nozzle of appropriate diameter. A functional use of this type of welding device therefore requires having a complete set of nozzles of different diameters at its disposal.
Le remplacement de la buse s'impose donc pour toute nouvelle série de tubes à souder dont le diamètre est différent de la précédente.The replacement of the nozzle is therefore essential for any new series of welding tubes whose diameter is different from the previous one.
Dans les dispositifs de l'art antérieur, cette opération de remplacement de la buse est longue et délicate, du fait que la buse est montée directement sur l'organe chauffant au moyen d'un clamp ou d'une attache rapide. L'ouverture du clamp et le retrait de la buse ne causent pas de problème, cependant que le montage de la nouvelle buse sur l'organe chauffant nécessite un savoir-faire certain : il faut d'abord positionner correctement la buse en dessous de l'organe chauffant, puis ajuster la position du clamp de manière à prendre à la fois l'organe chauffant et la buse. In the devices of the prior art, this operation of replacing the nozzle is long and delicate, because the nozzle is mounted directly on the heating element by means of a clamp or a quick coupler. Opening the clamp and removing the nozzle does not cause any problem, however the assembly of the new nozzle on the heating element requires certain know-how: it is first necessary to correctly position the nozzle below the heating element, then adjust the position of the clamp so as to take both the heating element and the nozzle.
La présente invention a précisément pour but de remédier à cet inconvénient en définissant un dispositif de thermosoudage à montage facilité. The object of the present invention is precisely to remedy this drawback by defining a thermosealing device with easy mounting.
Dans cette optique, l'invention a pour objet un dispositif de thermosoudgae de corps creux souples en matière plastique adapté à sceller hermétiquement une ouverture dudit corps creux, ledit dispositif comprenant : une structure de support, un organe chauffant et une buse; ladite buse présentant un culot en contact dudit organe chauffant et un tête de chauffe adaptée à pénétrer à l'intérieur de l'ouverture dudit corps creux pour chauffer le contour par projection d'air chaud; L'organe chauffant et la buse étant montés sur ladite structure de support, ladite structure de support étant déplaçable entre une position d'insertion de la tête de chauffe dans un corps creux et une position de retrait, caractérisé en ce que la structure de support comporte des moyens de réception indépendants de la buse et de l'organe chauffant adaptés à coopérer pour positionner le culot et la buse en contact de organe chauffant. La réception séparée des deux éléments (organe chauffant et buse) permet d'éviter la fixation de la buse sur l'organe chauffant ainsi que son positionnement délicat. With this in mind, the invention relates to a device for thermosealing flexible flexible bodies made of plastic material suitable for hermetically sealing an opening of said hollow body, said device comprising: a support structure, a heating member and a nozzle; said nozzle having a base in contact with said heating member and a heating head adapted to penetrate inside the opening of said hollow body to heat the contour by projection of hot air; The heating member and the nozzle being mounted on said support structure, said support structure being movable between a position of insertion of the heating head in a hollow body and a withdrawal position, characterized in that the support structure comprises means for receiving independent of the nozzle and of the heating member adapted to cooperate in order to position the base and the nozzle in contact with the heating member. The separate reception of the two elements (heating element and nozzle) makes it possible to avoid fixing the nozzle on the heating element as well as its delicate positioning.
Selon une forme de réalisation, les moyens de réception de la buse comprennent un logement pourvu d'un gradin périphérique destiné à recevoir un renfort périphérique formé sur la buse par insertion de cette dernière au travers dudit logement. D'autre part, les moyens de réception de l'organe chauffant comprennent un manchon positionné sur la structure de support en éloignement dudit logement de la buse, L'organe chauffant étant monté coulissant dans ledit manchon entre une position de contact du culot de la buse et une position éloignée du culot pour permettre le retrait de la buse hors dudit logement. Il n'y a pour ainsi dire plus réellement d'opération de montage de la buse, mais sa simple insertion dans un logement sans l'aide d'un outil quelconque, suivi de la descente de l'organe chauffant jusqu'à venir en contact du culot'due la buse. Cette simplification de montage est particulièrement avantageuse, car désormais, le remplacement de la buse peut être effectué même par un personnel non qualifié. De plus, le temps d'immobilisation du dispositif est pratiquement nul, I'opération de remplacement nécessitant environ cinq secondes. Les avantages découlant de ce gain de temps associés à l'emploi d'un personnel non qualifié permettent de réduire sensiblement le coût de l'opération. According to one embodiment, the means for receiving the nozzle comprise a housing provided with a peripheral step intended to receive a peripheral reinforcement formed on the nozzle by insertion of the latter through said housing. On the other hand, the means for receiving the heating member comprise a sleeve positioned on the support structure away from said housing of the nozzle, the heating member being slidably mounted in said sleeve between a contact position of the base of the nozzle and a position remote from the base to allow removal of the nozzle from said housing. There is practically no more operation for mounting the nozzle, but its simple insertion into a housing without the aid of any tool, followed by the descent of the heating element until it comes in contact of nozzle base. This simplification of assembly is particularly advantageous, since henceforth, the replacement of the nozzle can be carried out even by unqualified personnel. In addition, the immobilization time of the device is practically zero, the replacement operation requiring approximately five seconds. The advantages resulting from this time saving associated with the employment of unqualified personnel make it possible to significantly reduce the cost of the operation.
La présente invention sera maintenant décrite plus amplement, en regard des dessins annexés, donnant, à titre d'exemple non limitatif, un mode de réalisation de l'invention. The present invention will now be described more fully with reference to the accompanying drawings, giving, by way of non-limiting example, an embodiment of the invention.
Sur les dessins:
- la figure 1 est une vue en coupe transversale d'un dispositif de thermosoudage
selon l'invention, en cours de montage de la buse dans son logement,
- la figure la est une vue en coupe transversale d'une buse adaptée à être utilisée
dans le dispositif de la figure 1 en remplacement de la buse y figurant, et
- la figure 2 est une vue en coupe transversale d'un dispositif de thermosoudage
selon Invention en état de fonctionnement.In the drawings:
- Figure 1 is a cross-sectional view of a heat sealing device
according to the invention, during assembly of the nozzle in its housing,
- Figure la is a cross-sectional view of a nozzle adapted to be used
in the device of FIG. 1 in replacement of the nozzle appearing therein, and
- Figure 2 is a cross-sectional view of a heat sealing device
according to Invention in working condition.
En se référant à la figure 1, le dispositif de thermosoudage ou de soudage à air chaud comprend essentiellement trois éléments : une structure de support 1, un organe chauffant 2 et une buse de chauffe 3. Le dispositif est généralement incorporé dans une chaîne de remplissage de tube plus complexe et mis en oeuvre en bout de chaîne pour obturer hermétiquement le tube une fois rempli avec le produit souhaité. Ce dispositif est couplé à une paire de mâchoires de pressage (non représentées) qui effectue le contact des bords du tube ramolli. Chaque tube à sceller passe individuellement au droit du dispositif dont la structure de support 1 est déplaçable verticalement entre une position basse d'insertion de la buse 3 dans l'ouverture d'un corps creux en matière plastique, c'est-àdire un tube, et une position haute de retrait. L'ensemble du dispositif représenté sur les figures 1 et 2 est donc animé d'un mouvement translatif vertical de va-et-vient synchronisé par une unité de commande (non représenté) avec l'avancée des tubes, l'ouverture dirigée vers le haut. A titre indicatif, un cycle complet du dispositif dure environ une seconde. Les moyens permettant le déplacement du dispositif ainsi les moyens d'amenée des tubes ne seront pas décrits plus amplement, l'invention portant essentiellement sur le dispositif de thermosoudage en lui-même. Referring to Figure 1, the device for heat sealing or hot air welding essentially comprises three elements: a support structure 1, a heating element 2 and a heating nozzle 3. The device is generally incorporated in a filling chain of a more complex tube and used at the end of the chain to hermetically seal the tube once filled with the desired product. This device is coupled to a pair of pressing jaws (not shown) which makes contact with the edges of the softened tube. Each tube to be sealed passes individually to the right of the device, the support structure 1 of which can be moved vertically between a low position for insertion of the nozzle 3 into the opening of a hollow plastic body, i.e. a tube , and a high withdrawal position. The entire device shown in Figures 1 and 2 is therefore driven in a vertical translational movement back and forth synchronized by a control unit (not shown) with the advance of the tubes, the opening directed towards the high. As an indication, a complete cycle of the device takes approximately one second. The means for moving the device and the means for feeding the tubes will not be described more fully, the invention essentially relating to the heat-sealing device itself.
Les trois éléments constitutifs énoncés ci-dessus ainsi que leur agencement relatif seront maintenant décrits en détail. La structure de support 1 présente une forme complexe incorporant deux moyens de réception 11, 15 pour recevoir la buse 3 et l'organe chauffant 2, respectivement. Les moyens de réception de la buse 3 comprennent un logement annulaire 11 défini dans un bâti cylindrique 13. Le logement 11 est pourvu d'un gradin annulaire 12 adapté à recevoir un renfort annulaire 33 formé dans la buse 3 qui sera décrite ci-après. La buse 3, à l'état monté de la figure 2, est donc simplement insérée dans le logement 11 et repose avec son renfort 33 sur le gradin 12 du logement 11. Avec une précision d'usinage satisfaisante, la buse 3 peut ainsi être parfaitement positionnée sans aucun jeu. The three constituent elements mentioned above as well as their relative arrangement will now be described in detail. The support structure 1 has a complex shape incorporating two receiving means 11, 15 for receiving the nozzle 3 and the heating member 2, respectively. The means for receiving the nozzle 3 comprise an annular housing 11 defined in a cylindrical frame 13. The housing 11 is provided with an annular step 12 adapted to receive an annular reinforcement 33 formed in the nozzle 3 which will be described below. The nozzle 3, in the assembled state of FIG. 2, is therefore simply inserted into the housing 11 and rests with its reinforcement 33 on the step 12 of the housing 11. With satisfactory machining precision, the nozzle 3 can thus be perfectly positioned without any play.
En se référant maintenant aux figures 1 ou la, on voit clairement la physionomie d'une buse utilisable dans la présente invention. La buse comporte un culot 31 formant le renfort 33 adapté à reposer sur le gradin 12. La buse comporte également une tête de chauffe 32 adaptée à pénétrer dans l'ouverture du tube. En réalité, seule ladite tête 32 pénètre à l'intérieur du tube. Elle comporte tout autour de sa circonférence des bouches d'air chaud, qui une fois la tête 32 insérée dans un tube, sont positionnées au droit du bord de l'ouverture du tube. L'air chaud pulsé ramollit le bord du tube et est évacuée vers le haut entre la tête 32 et le tube. L'extrémité inférieure de la tête de chauffe 32 est formée par un embout conique 34 dont le diamètre maximal est supérieur à celui de la tête au niveau des bouches. L'embout 34, avec sa périphérie extérieure, est adaptée à venir en contact étanche à l'intérieur du tube, afin d'empêcher un écoulement d'air chaud vers le produit contenu dans le tube, ce qui pourrait l'endommager. L'air chaud est alimenté depuis l'organe chauffant au travers d'un conduit traversant la buse 3 à partir du culot 31. Referring now to Figures 1 or la, we can clearly see the physiognomy of a nozzle usable in the present invention. The nozzle comprises a base 31 forming the reinforcement 33 adapted to rest on the step 12. The nozzle also comprises a heating head 32 adapted to penetrate into the opening of the tube. In reality, only said head 32 penetrates inside the tube. It has all around its circumference vents of hot air, which once the head 32 inserted into a tube, are positioned at the right of the edge of the opening of the tube. The hot pulsed air softens the edge of the tube and is discharged upwards between the head 32 and the tube. The lower end of the heating head 32 is formed by a conical tip 34 whose maximum diameter is greater than that of the head at the mouths. The end piece 34, with its outer periphery, is adapted to come into tight contact inside the tube, in order to prevent a flow of hot air towards the product contained in the tube, which could damage it. The hot air is supplied from the heating member through a conduit passing through the nozzle 3 from the base 31.
La figure la représente une buse de diamètre de tête inférieur pour des tubes plus étroits.Figure la shows a nozzle with a smaller head diameter for narrower tubes.
Le culot 31 présente une taille unique quel que soit le diamètre de la tête. Le renfort 31 est ainsi formé de manière identique. Le diamètre de la tête n'interfère donc pas dans le montage de la buse 3.The base 31 has a single size regardless of the diameter of the head. The reinforcement 31 is thus formed identically. The diameter of the head therefore does not interfere in the mounting of the nozzle 3.
La structure de support 1 comprend également des moyens de réception de l'organe chauffant 2. Ces moyens comprennent un manchon annulalire 15 dans lequel l'organe chauffant est monté coulissant. Le manchon est porté par un bras 17 qui est ancré sur le bâti 13. Le manchon est situé à une certaine distance au-dessus du logement 11 et maintient l'organe chauffant 2 parfaitement dans l'axe de la buse placée dans son logement 11. L'organe chauffant est déplaçable par coulissement dans le manchon 15 entre une position basse de contact avec le culot 31 de la buse et une position élevée permettant le retrait de la buse 3 du logement 11 et son remplacement par une autre buse 3 de diamètre adéquat à l'utilisation à venir. L'organe chauffant 2 est donc monté de façon téléscopique dans le manchon 15. En position de contact, l'organe chauffant, avec son extrémité inférieure, vient en contact étanche avec le culot 31 et maintient ainsi la buse plaquée sur le gradin 12. Des moyens de blocage (non représentés) de l'organe chauffant 2 en position dans le manchon 15 sont prévus sous la forme d'une vis quart de tour. The support structure 1 also comprises means for receiving the heating member 2. These means comprise an annular sleeve 15 in which the heating member is slidably mounted. The sleeve is carried by an arm 17 which is anchored on the frame 13. The sleeve is located at a certain distance above the housing 11 and keeps the heating element 2 perfectly in the axis of the nozzle placed in its housing 11 The heating element can be moved by sliding in the sleeve 15 between a low position of contact with the base 31 of the nozzle and an elevated position allowing the withdrawal of the nozzle 3 from the housing 11 and its replacement by another nozzle 3 of diameter suitable for future use. The heating element 2 is therefore mounted telescopically in the sleeve 15. In the contact position, the heating element, with its lower end, comes into sealed contact with the base 31 and thus keeps the nozzle pressed against the step 12. Locking means (not shown) of the heating member 2 in position in the sleeve 15 are provided in the form of a quarter-turn screw.
L'organe chauffant 2, de structure classique comprend un carter 21 contenant un générateur d'air chaud constitué par une résistance électrique de 3 000 watts sur laquelle est pulsé de l'air comprimé à basse pression alimenté à partir de l'extrémité supérieure de l'organe 2. L'air comprimé traverse la résistance, et l'air chaud résultant est canalisé dans le conduit de la buse 3. Le générateur d'air chaud comprend également une régulation intégrée. L'air chaud est alimenté à une température de 5700C environ. L'organe chauffant 2 comprend aussi une tuyère d'évacuation de l'air chaud 16 qui est refoulé vers le haut à partir des bouches d'air chaud de la tête 32. La tuyère d'évacuation est connectée à un Venturi pour créer une aspiration. The heating element 2, of conventional structure comprises a casing 21 containing a hot air generator constituted by an electrical resistance of 3000 watts on which is compressed low-pressure compressed air supplied from the upper end of the member 2. The compressed air passes through the resistance, and the resulting hot air is channeled in the duct of the nozzle 3. The hot air generator also includes an integrated regulation. The hot air is supplied at a temperature of around 5700C. The heating element 2 also comprises a hot air evacuation nozzle 16 which is discharged upwards from the hot air outlets of the head 32. The evacuation nozzle is connected to a Venturi to create a aspiration.
Le remplacement de la buse, grâce à la présente invention, s'effectue de manière très simple en un temps minimum. On commence par débloquer la vis quart de tour, puis on relève l'organe chauffant 2 que l'on bloque en position élevée. La buse est ensuite retirée du logement 11 et remplacée par une buse adéquate. L'organe chauffant est à nouveau débloqué, puis appliquée en position de contact, contre le culot 31 de la buse 3. The replacement of the nozzle, thanks to the present invention, is carried out very simply in a minimum time. We start by unlocking the quarter-turn screw, then we raise the heating element 2 which we block in the raised position. The nozzle is then removed from the housing 11 and replaced by a suitable nozzle. The heating element is again released, then applied in the contact position, against the base 31 of the nozzle 3.
Le blocage de l'organe chauffant termine enfin l'opération de remplacement de la buse. The blocking of the heating element finally completes the nozzle replacement operation.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9314435A FR2713134B1 (en) | 1993-12-02 | 1993-12-02 | Plastic body heat sealing device by blowing hot air. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9314435A FR2713134B1 (en) | 1993-12-02 | 1993-12-02 | Plastic body heat sealing device by blowing hot air. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2713134A1 true FR2713134A1 (en) | 1995-06-09 |
| FR2713134B1 FR2713134B1 (en) | 1996-01-19 |
Family
ID=9453463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9314435A Expired - Fee Related FR2713134B1 (en) | 1993-12-02 | 1993-12-02 | Plastic body heat sealing device by blowing hot air. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2713134B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2213096A (en) * | 1987-12-29 | 1989-08-09 | Iwk Verpackungstechnik Gmbh | Centering container end for hot air welding |
| DE9013617U1 (en) * | 1990-09-28 | 1991-10-31 | IWK Verpackungstechnik GmbH, 7513 Stutensee | Device for centering an opening of a packaging container |
| WO1993004844A1 (en) * | 1991-09-04 | 1993-03-18 | Norden Pac Development Ab | Hot gas heating device |
-
1993
- 1993-12-02 FR FR9314435A patent/FR2713134B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2213096A (en) * | 1987-12-29 | 1989-08-09 | Iwk Verpackungstechnik Gmbh | Centering container end for hot air welding |
| DE9013617U1 (en) * | 1990-09-28 | 1991-10-31 | IWK Verpackungstechnik GmbH, 7513 Stutensee | Device for centering an opening of a packaging container |
| WO1993004844A1 (en) * | 1991-09-04 | 1993-03-18 | Norden Pac Development Ab | Hot gas heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2713134B1 (en) | 1996-01-19 |
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| ST | Notification of lapse |
Effective date: 20110831 |