EP0216716B1 - Device for applying a thermally fusible adhesive - Google Patents

Device for applying a thermally fusible adhesive Download PDF

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Publication number
EP0216716B1
EP0216716B1 EP19860420229 EP86420229A EP0216716B1 EP 0216716 B1 EP0216716 B1 EP 0216716B1 EP 19860420229 EP19860420229 EP 19860420229 EP 86420229 A EP86420229 A EP 86420229A EP 0216716 B1 EP0216716 B1 EP 0216716B1
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EP
European Patent Office
Prior art keywords
handle
sticks
casing
introduction
carriage
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Expired
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EP19860420229
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German (de)
French (fr)
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EP0216716A1 (en
Inventor
Pierre Sivignon
Gilles Damon
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Application des Gaz SA
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Application des Gaz SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material
    • B05C17/00526—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
    • B05C17/0053—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical

Definitions

  • the present invention relates to devices for applying a hot-melt adhesive, of the kind that in practice and users more commonly designate as "glue guns”.
  • the solid adhesive cartridges must be introduced one by one, in a discontinuous manner, that is to say by releasing the counter handle, and therefore by interrupting the expulsion of molten adhesive.
  • the present invention proposes to remedy the aforementioned drawbacks. More specifically, it relates to a device for the expulsion of molten adhesive, substantially continuous, with a simple and comfortable grip whatever the morphological dimensions of the hand of the user.
  • the reference (1) designates the entire gun housing, this housing being profiled to form a main part (2) intended to enclose the heating body (21) with the heating means (22), and a lower part or grip handle (3).
  • the front of the main part (2) is provided with a valve nozzle (4) which communicates with the heating body (22) open towards the rear; in this opening, a flexible sleeve (5) is provided, via the supply orifice (6) made for the introduction of the rods into the housing.
  • the latter comprises several series of louvers (2a) for the circulation of air around the heating body (21), the control of the heating means (22) associated with the latter being carried out using a operating button (7).
  • the mechanism (23) for introducing the rods into the opening of the heating body 21 comprises in combination a counter-handle 8, a pivoting member 9 associated with elastic means formed by a spring 10, and a carriage 11.
  • the counter-handle 8 is articulated by its base on the handle 3, the pivot 3a being disposed opposite the base 4, and said counter-handle being profiled longitudinally and transversely to somehow complete the shape of the handle 3 .
  • the pivoting member 9 has at its lower part two protruding parallel extensions 9a. which define a screed-shaped profile open downwards.
  • a transverse pin 12 which is intended to constitute a support for a vertical finger 8a secured to the upper end of the counter-handle 8, which finger passes through a lumen 2b provided for this effect at the rear of the main part 2 of the housing 1.
  • the pin 12 also serves as an attachment point for one of the ends of the return spring 10, the opposite end cooperating with a screw or rivet 2c of part 2.
  • the front edge, facing upwards, of the member 9 is profiled to determine an edge 9b, as will be better understood later.
  • the carriage 11 comprises an upper part with a cylindrical profile, integral with an overflowing base 11 a which is slidably engaged between lateral guides 2d provided horizontally against the interior wall of the main part 2 of the housing 1.
  • This base 11a. and the downwardly facing cylindrical wall are hollowed out with a longitudinal opening 11b inside which engages the rear upper part of the pivoting member 9, a transverse pin 13 being inserted into perforations made in coincidence in the base and in the above-mentioned upper part to ensure the articulated coupling of parts 9 and 11.
  • Fig. 1, 4 and 5 illustrate the operation of the mechanism 23 described above.
  • a new insertion operation can take place and it is understood that a series of pressure maneuvers successively applied to the counter-handle 8 consequently ensures the complete introduction of the stick A and of the following sticks, the front part of each pressing on the posterior part of the previous one. This can lead to continuous propulsion of the molten adhesive.
  • the operation of the actuating mechanism is practical, since the angular travel of the counter-handle 8 is compatible with gripping in the same hand of the user and of the handle 3 and of the counter-handle 8, this gripping allowing the pivoting thereof by simply tightening the hand. It should be noted that by properly positioning his hand in height relative to the handle-against-handle assembly, the user can find a hand grip compatible with his morphology, that is to say with his own stroke of his fingers.
  • the major part of the insertion mechanism according to the invention is transferred to the outside of the handle 3 and in the rear part of the main part 2 of the housing 1.
  • the space thus left free within the housing can thus be occupied by other elements or components, made necessary for other technical reasons, for example to accommodate a reserve of solid rods A or a complete fuel gas supply and control system if the heating mode of the heating body 21 uses a gas burner and no longer an electrical resistance.

Description

La présente invention concerne les appareils pour l'application d'un adhésif thermo-fusible, du genre de ceux que la pratique et les utilisateurs désignent plus couramment sous le nom de «pistolets à colle».The present invention relates to devices for applying a hot-melt adhesive, of the kind that in practice and users more commonly designate as "glue guns".

Selon une première proposition (Document FR-C-2 155 953) qui décrit un appareil du type énoncé dans le préambule de la revendication 1 connue, un tel appareil comprend:

  • - un boîtier avec poignée de préhension, présentant à l'arrière un orifice pour l'alimentation avec des bâtonnets d'adhésif solide;
  • - une buse pour la distribution de l'adhésif fondu, pourvue d'un clapet et disposée à l'avant du boîtier;
  • - un conduit ou corps de chauffe pour les bâtonnets, disposé au moins en partie à l'intérieur du boîtier et communiquant à une extrémité avec la buse;
  • - un manchon souple pour l'introduction des bâtonnets, disposé au moins en partie à l'intérieur du boîtier et communiquant d'un côté avec l'autre extrémité du conduit de chauffe, et en relation de l'autre côté avec l'orifice d'entrée du boîtier;
  • - des moyens pour le chauffage du conduit de chauffe, en relation thermique avec ledit conduit, en l'occurrence une résistance électrique disposée dans un logement approprié du corps de chauffe;
  • - et un mécanisme pour l'introduction des bâtonnets dans le manchon, complètement intégré dans le boîtier.
According to a first proposal (Document FR-C-2 155 953) which describes an apparatus of the type stated in the preamble of known claim 1, such an apparatus comprises:
  • - a housing with a grip handle, having at the rear a hole for feeding with sticks of solid adhesive;
  • - a nozzle for dispensing the molten adhesive, provided with a valve and disposed at the front of the housing;
  • - a duct or heating body for the sticks, arranged at least partially inside the housing and communicating at one end with the nozzle;
  • - a flexible sleeve for the introduction of the sticks, arranged at least partially inside the housing and communicating on one side with the other end of the heating duct, and in relation on the other side with the orifice housing input;
  • - Means for heating the heating duct, in thermal relation with said duct, in this case an electrical resistance arranged in an appropriate housing of the heating body;
  • - And a mechanism for the introduction of the sticks in the sleeve, completely integrated in the housing.

Plus précisément, ce dernier mécanisme comporte les éléments suivants:

  • - un chariot pour le serrage des bâtonnets, apte à se déplacer dans le boîtier à l'intérieur de rainures appropriées, entre le manchon et l'orifice d'entrée, ce chariot ayant une forme substantiellement tubulaire;
  • - un organe pivotant monté sur le chariot et dont un bras est adapté pour serrer un bâtonnet contre la partie tubulaire opposée du chariot;
  • - un levier articulé en son milieu sur la poignée, disposé à l'intérieur de cette dernière, en appui glissant à une extrémité contre l'autre bras de l'organe pivotant, et plus précisément contre un axe solidaire dudit organe;
  • - une gâchette coulissant dans le boîtier, à l'avant de la poignée par rapport à la buse, et reliée à l'autre extrémité du levier précité;
  • - et un moyen pour le rappel du chariot avec l'organe pivotant, en direction de l'orifice d'alimentation, ce moyen consistant en un ressort en épingle. Le fonctionnement d'un tel appareil est le suivant:
  • - une fois le conduit de chauffe porté à une température permettant la fusion de l'adhésif, on intro- duitun bâtonnet par l'orifice situé à l'arrière du boîtier afin que celui-ci pénètre dans la partie tubulaire du chariot;
  • - l'appareil étant en main, l'utilisateur appuie sur la gâchette, si bien que l'organe pivotant serre le bâtonnet contre la partie tubulaire du chariot, et ce dernier se déplace vers le manchon, en faisant pénétrer le bâtonnet dans celui-ci, sur une certaine longueur égale à la course du chariot;
  • - la gâchette étant ensuite relâchée, l'organe pivotant se dégage du bâtonnet, et le chariot se déplace vers l'orifice d'alimentation, en glissant contre le bâtonnet sous l'effet du moyen de rappel;
  • - en pressant et relâchant alternativement la gâchette, on fait donc avancer le bâtonnet dans le manchon, puis dans le corps de chauffe où il se liquéfie;
  • - la partie arrière du bâtonnet, demeurée solide, joue le rôle d'un piston pour l'expulsion de l'adhésif fondu à travers la buse;
  • - lorsque le premier bâtonnet n'est plus en prise avec le chariot, en introduisant un second bâtonnet en appui contre la partie arrière du premier, il est possible de reprendre la progression des bâtonnets dans l'appareil, de la même manière que celle décrite précédemment.
More specifically, this latter mechanism includes the following elements:
  • - A carriage for tightening the rods, able to move in the housing inside appropriate grooves, between the sleeve and the inlet orifice, this carriage having a substantially tubular shape;
  • - A pivoting member mounted on the carriage and one arm of which is adapted to clamp a rod against the opposite tubular part of the carriage;
  • - A lever articulated in its middle on the handle, disposed inside the latter, in sliding support at one end against the other arm of the pivoting member, and more precisely against an axis integral with said member;
  • - a trigger sliding in the housing, at the front of the handle relative to the nozzle, and connected to the other end of the aforementioned lever;
  • - And a means for the return of the carriage with the pivoting member, in the direction of the supply orifice, this means consisting of a pin spring. The operation of such a device is as follows:
  • - once the heating duct has been brought to a temperature allowing the adhesive to melt, a stick is introduced through the orifice located at the rear of the housing so that it enters the tubular part of the carriage;
  • - the device being in hand, the user presses the trigger, so that the pivoting member clamps the stick against the tubular part of the carriage, and the latter moves towards the sleeve, making the stick penetrate into it ci, over a certain length equal to the stroke of the carriage;
  • - The trigger is then released, the pivoting member is released from the stick, and the carriage moves towards the feed orifice, sliding against the stick under the effect of the return means;
  • - by alternately pressing and releasing the trigger, the rod is then advanced in the sleeve, then in the heating body where it liquefies;
  • - the rear part of the stick, which remains solid, acts as a piston for expelling the molten adhesive through the nozzle;
  • - when the first stick is no longer in engagement with the carriage, by introducing a second stick bearing against the rear part of the first, it is possible to resume the progression of the sticks in the apparatus, in the same manner as that described previously.

La prise en main d'un tel appareil présente quelques inconvénients pour l'utilisateur dont les doigts peuvent ne pas être assez longs pour actionner la gâchette, en même temps qu'il tient la poignée.The handling of such a device has some drawbacks for the user whose fingers may not be long enough to actuate the trigger, while holding the handle.

Selon une seconde proposition connue (US-C-2 556 609), un appareil pour l'application d'un adhésif thermo-fusible comprend:

  • - un boîtier avec poignée de préhension, présentant à l'arrière un orifice pour l'alimentation avec des cartouches cylindriques d'adhésif solide;
  • - un conduit de chauffe pour les cartouches, disposé au moins en partie à l'intérieur du boîtier et dont une partie avant troncônique forme buse pour la distribution de l'adhésif fondu, tandis qu'une partie arrière, à travers l'orifice d'alimentation, sert à l'introduction des cartouches d'adhésif;
  • des moyens pour le chauffage du conduit de chauffe, consistant en une résistance électrique, en relation thermique avec ledit conduit;
  • - et un mécanisme pour l'introduction des cartouches dans le conduit de chauffe.
According to a second known proposal (US-C-2,556,609), an apparatus for applying a hot-melt adhesive comprises:
  • - a housing with a grip handle, having at the rear an orifice for feeding with cylindrical cartridges of solid adhesive;
  • - a heating duct for the cartridges, arranged at least partly inside the housing and of which a frustoconical front part forms a nozzle for the distribution of the molten adhesive, while a rear part, through the orifice 'feed, used for the introduction of adhesive cartridges;
  • means for heating the heating duct, consisting of an electrical resistance, in thermal relation with said duct;
  • - And a mechanism for the introduction of the cartridges into the heating duct.

Plus précisément, ce mécanisme d'introduction comporte:

  • - une contre-poignée disposée à l'extérieur du boîtier, à l'arrière de la poignée, et articulée au bas de cette dernière;
  • - un organe pour la poussée des cartouches, comportant un piston coulissant dans le conduit de chauffe et une tige émergeant de ce dernier, cette tige passant dans un orifice approprié d'une partie pivotante de la contre-poignée;
  • - et un moyen pour le rappel de la contre-poignée en sens inverse de celui correspondant à l'introduction des cartouches.
More specifically, this introduction mechanism includes:
  • - a counter handle disposed outside the housing, at the rear of the handle, and articulated at the bottom of the latter;
  • a member for pushing the cartridges, comprising a piston sliding in the heating duct and a rod emerging from the latter, this rod passing through a suitable orifice of a pivoting part of the counter handle;
  • - And a means for the return of the counter handle in the opposite direction to that corresponding to the introduction of the cartridges.

Le fonctionnement d'un tel appareil est le suivant:

  • - par déplacement de l'organe de poussée par rapport à la contre-poignée, en sens inverse de l'introduction, on peut engager une cartouche dans le corps de chauffe;
  • - une fois le conduit de chauffe amené à la température de fusion de l'adhésif, en appuyant alors sur la contre-poignée, on bloque la tige par rapport à celle-ci par basculement de sa partie pivotante, et on pousse la cartouche par le piston dans le conduit de chauffe, la colle fondue s'évacuant ainsi par la buse;
  • - en relâchant ensuite la contre-poignée, on dégage la tige par rapport à celle-ci, laquelle se déplace vers l'arrière, en laissant l'organe de poussée dans sa position précédente;
  • - et on peut reprendre l'expulsion d'adhésif fondu en appuyant à nouveau sur la contre-poignée.
The operation of such a device is as follows:
  • - By displacement of the thrust member relative to the handle, in the opposite direction of the introduction, one can engage a cartridge in the heating body;
  • - once the heating duct brought to the melting temperature of the adhesive, by pressing on the counter handle, the rod is blocked relative to the latter by tilting its pivoting part, and the cartridge is pushed by the piston in the heating duct, the molten glue thus being evacuated by the nozzle;
  • - then releasing the counter handle, the rod is released relative to the latter, which moves rearward, leaving the thrust member in its previous position;
  • - and we can resume the expulsion of molten adhesive by pressing the counter handle again.

Avec un tel appareil, il faut introduire une par une les cartouches d'adhésif solide, de manière discontinue, c'est-à-dire en relâchant la contre-poignée, et donc en interrompant l'expulsion d'adhésif fondu.With such an apparatus, the solid adhesive cartridges must be introduced one by one, in a discontinuous manner, that is to say by releasing the counter handle, and therefore by interrupting the expulsion of molten adhesive.

Pour certains travaux qui nécessitent une expulsion continue de colle, ou en tout cas pendant une durée suffisamment longue, ceci constitue un inconvénient majeur.For certain works which require a continuous expulsion of glue, or in any case for a sufficiently long period, this constitutes a major drawback.

La présente invention se propose de remédier aux inconvénients précités. Plus précisément, elle a pour objet un appareil permettant une expulsion d'adhésif fondu, sensiblement continue, avec une prise en main simple et confortable quelles que soient les dimensions morphologiques de la main de l'utilisateur.The present invention proposes to remedy the aforementioned drawbacks. More specifically, it relates to a device for the expulsion of molten adhesive, substantially continuous, with a simple and comfortable grip whatever the morphological dimensions of the hand of the user.

Selon l'invention:

  • - le levier du mécanisme d'introduction est constitué par une contre-poignée, disposée au moins pour une majeure partie à l'extérieur du boîtier, articulée dans la partie inférieure de la poignée, et située à l'arrière de celle-ci par rapport à la buse;
  • - le boîtier présente une lumière longitudinale, dans sa partie située à l'arrière de la poignée par rapport à la buse, et alignée par rapport à ladite poignée, tandis que la contre-poignée comporte un doigt pénétrant dans ladite lumière, en appui glissant contre l'organe pivotant.
According to the invention:
  • - The lever of the insertion mechanism is constituted by a counter-handle, arranged at least for a major part outside the case, articulated in the lower part of the handle, and situated at the rear of the latter by report to the nozzle;
  • - The housing has a longitudinal light, in its part located at the rear of the handle relative to the nozzle, and aligned with respect to said handle, while the counter-handle has a finger penetrating into said light, in sliding support against the pivoting member.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer:

  • la figure 1 est une vue de côté avec arrachement montrant un appareil d'application ou pistolet à colle établi conformément à l'invention;
  • la figure 2 est une coupe transversale partielle à plus grande échelle, suivant le plan indiqué en II-II en figure 1;
  • la figure 3 est une vue en perspective représentant, préalablement à leur montage dans le boîtier de l'appareil, les trois éléments constitutifs principaux du mécanisme pour l'introduction des bâtonnets;
  • les figures 4 et 5 sont des coupes longitudinales partielles illustrant schématiquement le fonctionnement de ce mécanisme.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Figure 1 is a side view with cutaway showing an applicator or glue gun established in accordance with the invention;
  • Figure 2 is a partial cross section on a larger scale, along the plane indicated in II-II in Figure 1;
  • Figure 3 is a perspective view showing, prior to mounting in the housing of the device, the three main components of the mechanism for the introduction of the sticks;
  • Figures 4 and 5 are partial longitudinal sections schematically illustrating the operation of this mechanism.

En figure 1, la référence (1) désigne l'ensemble du boîtier du pistolet, ce boîtier étant profilé pour former une partie principale (2) destinée à renfermer le corps de chauffe (21) avec les moyens de chauffage (22), et une partie inférieure ou poignée de préhension (3). L'avant de la partie principale (2) est pourvu d'une buse à clapet (4) qui communique avec le corps de chauffe (22) ouvert vers l'arrière; dans cette ouverture, est prévu un manchon souple (5), en via-à-vis de l'orifice d'alimentation (6) pratiqué pour l'introduction des bâtonnets dans le boîtier. Ce dernier comporte plusieurs séries d'ouies (2a) pour la circulation de l'air autour du corps de chauffe (21), la commande des moyens de chauffage (22) associés à celui-ci étant effectuée à l'aide d'un bouton de manoeuvre (7).In FIG. 1, the reference (1) designates the entire gun housing, this housing being profiled to form a main part (2) intended to enclose the heating body (21) with the heating means (22), and a lower part or grip handle (3). The front of the main part (2) is provided with a valve nozzle (4) which communicates with the heating body (22) open towards the rear; in this opening, a flexible sleeve (5) is provided, via the supply orifice (6) made for the introduction of the rods into the housing. The latter comprises several series of louvers (2a) for the circulation of air around the heating body (21), the control of the heating means (22) associated with the latter being carried out using a operating button (7).

Conformément à l'invention, le mécanisme (23) pour l'introduction des bâtonnets dans l'ouverture du corps de chauffe 21 comprend en combinaison une contre-poignée 8, un organe pivotant 9 associé à des moyens élastiques formés par un ressort 10, et un chariot 11.In accordance with the invention, the mechanism (23) for introducing the rods into the opening of the heating body 21 comprises in combination a counter-handle 8, a pivoting member 9 associated with elastic means formed by a spring 10, and a carriage 11.

La contre-poignée 8 est articulée par sa base sur la poignée 3, le pivot 3a étant disposé à l'opposé de la base 4, et ladite contre-poignée étant profilée longitudinalement et transversalement pour compléter en quelques sorte la forme de la poignée 3.The counter-handle 8 is articulated by its base on the handle 3, the pivot 3a being disposed opposite the base 4, and said counter-handle being profiled longitudinally and transversely to somehow complete the shape of the handle 3 .

Comme plus particulièrement montré an fig. 2 et 3, l'organe pivotant 9 comporte à sa partie inférieure deux prolongements parallèles débordants 9a. qui définissent un profil en forme de chape ouverte vers le bas. Dans une perforation ménagée dans chacun de ces deux prolongements 9a_ est introduite une goupille transversale 12 qui est destinée à constituer appui pour un doigt vertical 8a solidaire de l'extrémité supérieure de la contre-poignée 8, lequel doigt traverse une lumière 2b prévue à cet effet à l'arrière de la partie principale 2 du boîtier 1. On observera que la goupille 12 sert également de point d'attache pour l'une des extrémités du ressort de rappel 10, l'extrémité opposée coopérant avec une vis ou rivet 2c de la partie 2. De plus, le bord antérieur, tourné vers le haut, de l'organe 9 est profilé pour déterminer une arête 9b, comme on le comprendra mieux plus loin.As more particularly shown in fig. 2 and 3, the pivoting member 9 has at its lower part two protruding parallel extensions 9a. which define a screed-shaped profile open downwards. In a perforation formed in each of these two extensions 9a_ is introduced a transverse pin 12 which is intended to constitute a support for a vertical finger 8a secured to the upper end of the counter-handle 8, which finger passes through a lumen 2b provided for this effect at the rear of the main part 2 of the housing 1. It will be observed that the pin 12 also serves as an attachment point for one of the ends of the return spring 10, the opposite end cooperating with a screw or rivet 2c of part 2. In addition, the front edge, facing upwards, of the member 9 is profiled to determine an edge 9b, as will be better understood later.

Le chariot 11 comprend une partie supérieure à profil cylindrique, solidaire d'une embase débordante 11 a qui est engagée à coulissement entre des guides latéraux 2d prévus horizontalement contre la paroi intérieure de la partie principale 2 du boîtier 1. Cette embase 11a. et la paroi cylindrique tourné vers le bas sont creusées d'une ouverture longitudinale 11 b à l'intérieur de laquelle vient s'engager la partie supérieure arrière de l'organe pivotant 9, une goupille transversale 13 étant introduite dans des perforations pratiquées en coïncidence dans l'embase et dans la partie supérieure précitée pour assurer l'attelage articulé des pièces 9 et 11.The carriage 11 comprises an upper part with a cylindrical profile, integral with an overflowing base 11 a which is slidably engaged between lateral guides 2d provided horizontally against the interior wall of the main part 2 of the housing 1. This base 11a. and the downwardly facing cylindrical wall are hollowed out with a longitudinal opening 11b inside which engages the rear upper part of the pivoting member 9, a transverse pin 13 being inserted into perforations made in coincidence in the base and in the above-mentioned upper part to ensure the articulated coupling of parts 9 and 11.

Fig. 1, 4 et 5 illustrent le fonctionnement du mécanisme 23 ci-dessus décrit.Fig. 1, 4 and 5 illustrate the operation of the mechanism 23 described above.

A la manière usuelle, l'utilisateur introduit axialement un bâtonnet d'adhésif solide A dans l'orifice d'alimentation 6 et il le repousse axialement pour faire pénétrer à travers le manchon 5et le chariot 11, son extrémité antérieure jusqu'à l'intérieur du corps de chauffe 21. Les pièces du mécanisme étant à la position illustrée en fig. 1, cette introduction ne présente aucune difficulté du fait que le ressort 10 maintient.l'organe pivotant 9 à la position basse éclipsée pour laquelle l'arête 9b de celui-ci est complètement escamotée à l'intérieur de l'ouverture 11b du chariot 11.In the usual way, the user axially introduces a stick of solid adhesive A into the supply orifice 6 and pushes it axially to make it penetrate through the sleeve 5 and the carriage 11, its anterior end up to the inside the heating body 21. The parts of the mechanism being in the position illustrated in fig. 1, this introduction presents no difficulty due to the fact that the spring 10 maintains the pivoting member 9 in the low eclipsed position for which the edge 9b of the latter is completely retracted inside the opening 11b of the carriage 11.

Ceci fait, l'opérateur exerce du fond de la main une pression sur la contre-poignée 8 afin de rapprocher celle-ci de la poignée 3 proprement dite. Par suite de l'appui de la dent 8a contre l'organe 9 et de la position décalée de la goupille 12, cet organe 9 bascule dans le sens dextrogyre, de telle sorte que son arête 9b. se déplace obliquement vers le haut en pénétrant à force dans l'épaisseur du bâtonnet A qui est appliqué lui-même fermement contre la partie tubulaire du chariot 11 (voir fig. 4). Dès lors, l'organe 9 se comporte à la manière d'un poussoir qui opère l'entraînement du chariot 11 en direction de l'entrée du corps de chauffe 21, avec le bâtonnet A qui ne peut glisser intempestivement du fait de l'encrage de l'arête 9b dans ledit bâtonnet (fig. 5).This done, the operator exerts pressure from the bottom of the hand against the handle 8 in order to bring it closer to the handle 3 proper. As a result of the support of the tooth 8a against the member 9 and the offset position of the pin 12, this member 9 rocks in the dextrorotatory direction, so that its edge 9b. moves obliquely upwards by forcing into the thickness of the stick A which is itself applied firmly against the tubular part of the carriage 11 (see fig. 4). Consequently, the member 9 behaves in the manner of a pusher which operates the drive of the carriage 11 in the direction of the entry of the heating body 21, with the stick A which cannot inadvertently slide due to the inking the edge 9b in said rod (fig. 5).

Le déplacement du chariot 11 à l'encontre du ressort 10 est stoppé lorsque la course angulaire de la contre-poignée 8 s'arrête, elle-même par butée contre une partie fixe de l'appareil, laquelle peut être constituée par l'extrémité antérieure de la lumière 2b. L'opérateur cesse alors sa pression sur la contre-poignée 8, si bien que le chariot 11 et l'organe pivotant 9 sont ramenés à leurs position initiale par le ressort 10, l'arête 9bL libérant d'abord le bâtonnet A qui ne peut toutefois pas reculer. Ce mouvement de rappel se poursuit jusqu'à ce que la dent 8a vienne porter contre l'extrémité supérieure de la lumière 2b . En variante, c'est ce chariot 11 qui peut limiter le mouvement de rappel de l'ensemble par butée de son bord arrière contre une cloison fixe 14 de la partie 2 du boîtier, perforé pour le passage des bâtonnets. Une nouvelle opération d'introduction peut avoir lieu et l'on conçoit qu'une série de manoeuvres de pression successivement appliquées à la contre-poignée 8 assure en conséquence l'introduction complète du bâtonnet A et des bâtonnets suivants, la partie antérieure de chacun appuyant sur la partie postérieure du précédent. On peut ainsi aboutir à une propulsion continue de l'adhésif fondu.The movement of the carriage 11 against the spring 10 is stopped when the angular travel of the counter-handle 8 stops, itself by abutment against a fixed part of the device, which can be constituted by the end anterior light 2b. The operator then ceases to press against the handle 8, so that the carriage 11 and the pivoting member 9 are returned to their initial position by the spring 10, the edge 9b L first releasing the stick A which cannot back down. This return movement continues until the tooth 8a comes to bear against the upper end of the lumen 2b. Alternatively, it is this carriage 11 which can limit the return movement of the assembly by abutting its rear edge against a fixed partition 14 of the part 2 of the housing, perforated for the passage of the sticks. A new insertion operation can take place and it is understood that a series of pressure maneuvers successively applied to the counter-handle 8 consequently ensures the complete introduction of the stick A and of the following sticks, the front part of each pressing on the posterior part of the previous one. This can lead to continuous propulsion of the molten adhesive.

La manoeuvre du mécanisme d'actionnement est pratique, puisque la course angulaire de la contre-poignée 8 est compatible avec une saisie dans la même main de l'utilisateur et de la poignée 3 et de la contre-poignée 8, cette saisie permettant le pivotement de celle-ci par simple serrage de la main. Il convient de noter qu'en positionnant convenablement sa main en hauteur par rapport à l'ensemble poignée- contre-poignée, l'utilisateur peut trouver une prise de main compatible avec sa morphologie, c'est-à-dire avec la propre course de ses doigts.The operation of the actuating mechanism is practical, since the angular travel of the counter-handle 8 is compatible with gripping in the same hand of the user and of the handle 3 and of the counter-handle 8, this gripping allowing the pivoting thereof by simply tightening the hand. It should be noted that by properly positioning his hand in height relative to the handle-against-handle assembly, the user can find a hand grip compatible with his morphology, that is to say with his own stroke of his fingers.

On observera également que la majeure partie du mécanisme d'introduction selon l'invention est reportée à l'extérieur de la poignée 3 et dans la partie arrière de la partie principale 2 du boîtier 1. La place ainsi laissée libre au sein du boîtier peut de la sorte être occupée par d'autres éléments ou composants, rendus nécessaires pour d'autres motifs techniques, par exemple pour loger une réserve de bâtonnets solides A ou un système complet d'alimentation et de contrôle de gaz combustible si le mode de chauffage du corps de chauffe 21 fait appel à un brûleur à gaz et non plus à une résistance électrique.It will also be observed that the major part of the insertion mechanism according to the invention is transferred to the outside of the handle 3 and in the rear part of the main part 2 of the housing 1. The space thus left free within the housing can thus be occupied by other elements or components, made necessary for other technical reasons, for example to accommodate a reserve of solid rods A or a complete fuel gas supply and control system if the heating mode of the heating body 21 uses a gas burner and no longer an electrical resistance.

Claims (6)

1. Device for applying a thermally fusible adhesive comprising:
- a casing (1, 2) provided with a grip handle (3) and having at the rear an aperture (6) for feeding sticks of solid adhesive (A);
- a nozzle (4) disposed at the front of the casing for distributing the melted adhesive;
- a heating passage (21) for the sticks, which is disposed at least in part inside the casing and at one end is in communication with the nozzle;
- a sleeve (5) for the introduction of the sticks, which is disposed at least in part inside the casing and at one end is in communication with the other end of the heating passage, while its other end communicates with the inlet aperture of the casing;
- means (22) for heating the heating passage, which are in thermal relationship with said passage;
- a mechanism (23) for the introduction of the sticks into the heating passage, comprising firstly a tubular carriage (11) for the transfer of said sticks, which is capable of translatory movement in the casing between said sleeve and the inlet aperture; sec ondly a member (9) which pivots on the carriage and of which a part (9b) is adapted to apply a stick against the opposite tubular portion of said carriage; thirdly a lever (8) pivoted on the handle (3) and slidably bearing against another part of the pivoting member; and fourthly a means (10) for returning the carriage together with the pivoting member to the feed aperture, characterized in that:
- the lever of the introduction mechanism (23) is formed by an outer handle disposed at least for the greater part outside the casing (1,2), pivoted at (3a) at the bottom of the handle (3), and situated to the rear of the latter (sic) in relation to the nozzle (14);
- the casing (1, 2) has a longitudinal opening (2b) in its portion situated to the rear of the handle (3) in relation to the nozzle (4) and in alignment with said handle, while the outer handle (8) has a finger (8a) penetrating into said opening to bear slidingly against the pivoting member (9).
2. Device according to Claim 1, characterized in that the outer handle (8) has a shape complementary to that of the handle (3).
3. Device according to Claim 1, characterized in that the angular stroke of the outer handle (8) is limited in the direction of the introduction of the sticks by its abutment against the handle (3).
4. Device according to Claim 1, characterized in that the translatory movement of the carriage (11) is limited in the direction of the introduction of the sticks (A) by its abutment against the sleeve (5).
5. Device according to Claim 1, characterized in that the angular stroke of the outer handle (8) is limited in the opposite direction to that of the introduction of the sticks by its abutment against the casing (1, 2).
6. Device according to Claim 1, characterized in that the translatory movement of the carriage is limited in the opposite direction to that of the introduction of the sticks by its abutment against a partition (13) provided for the purpose in the casing (1,2) and having an aperture to permit the passage of the sticks (A).
EP19860420229 1985-09-19 1986-09-11 Device for applying a thermally fusible adhesive Expired EP0216716B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8514096 1985-09-19
FR8514096A FR2587239B1 (en) 1985-09-19 1985-09-19 APPARATUS FOR APPLYING A THERMO-FUSE ADHESIVE

Publications (2)

Publication Number Publication Date
EP0216716A1 EP0216716A1 (en) 1987-04-01
EP0216716B1 true EP0216716B1 (en) 1988-10-26

Family

ID=9323167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860420229 Expired EP0216716B1 (en) 1985-09-19 1986-09-11 Device for applying a thermally fusible adhesive

Country Status (4)

Country Link
EP (1) EP0216716B1 (en)
JP (1) JPS62117660A (en)
DE (1) DE3660987D1 (en)
FR (1) FR2587239B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225267C3 (en) * 1992-03-19 2001-04-26 Ifm Electronic Gmbh Sealing device for an electronic switching device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951846A (en) * 1989-02-02 1990-08-28 Minnesota Mining And Manufacturing Company Hot melt applicator with anti-drip mechanism
DE4244994B8 (en) * 1992-03-19 2006-08-10 I F M Electronic Gmbh Housing with molded components
US20120048889A1 (en) * 2010-08-26 2012-03-01 Huang Yung-Kuan Pusher Unit of Glue Applicator
JP7025737B2 (en) * 2018-07-27 2022-02-25 旭サナック株式会社 Coating gun

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US3066841A (en) * 1959-04-06 1962-12-04 Phillips Petroleum Co Welding gun for thermoplastic materials
US3612357A (en) * 1969-10-06 1971-10-12 Swingline Inc Molten material dispensers with controlled forcible manual feeder for ratchet-toothed heat-liquefiable rod, having heater and thermostat
FR2272750A1 (en) * 1974-05-28 1975-12-26 Wittenberge Gulliez Julien Van Adhesive dispenser with heat control - concentric springs force adhesive stick forwards onto spiked block near heating element
DD136457A1 (en) * 1978-05-11 1979-07-11 Friedrich Hans Joachim MELTING GLUE-AUFTRAGSGERAET
DE2949743A1 (en) * 1979-12-11 1981-06-19 Hilti AG, 9494 Schaan DEVICE FOR MELTING ROD-SHAPED BODIES MADE OF THERMOPLASTIC MATERIAL
FR2536308A1 (en) * 1982-11-22 1984-05-25 Cheminant Michel Improved gun for dispensing a molten thermoplastic material, such as adhesive
DE3405553A1 (en) * 1984-02-16 1985-11-07 Meltex Verbindungstechnik GmbH, 2120 Lüneburg Apparatus for the liquefaction and application of melt adhesives

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225267C3 (en) * 1992-03-19 2001-04-26 Ifm Electronic Gmbh Sealing device for an electronic switching device

Also Published As

Publication number Publication date
FR2587239B1 (en) 1987-10-23
DE3660987D1 (en) 1988-12-01
FR2587239A1 (en) 1987-03-20
JPS62117660A (en) 1987-05-29
EP0216716A1 (en) 1987-04-01

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