EP3976903B1 - Strip applicator with strip protection and method for maintaining such an applicator - Google Patents

Strip applicator with strip protection and method for maintaining such an applicator Download PDF

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Publication number
EP3976903B1
EP3976903B1 EP19739672.4A EP19739672A EP3976903B1 EP 3976903 B1 EP3976903 B1 EP 3976903B1 EP 19739672 A EP19739672 A EP 19739672A EP 3976903 B1 EP3976903 B1 EP 3976903B1
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EP
European Patent Office
Prior art keywords
chamber
wall
applicator
cylinder
free end
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EP19739672.4A
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German (de)
French (fr)
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EP3976903B8 (en
EP3976903A1 (en
Inventor
Lionel DELESTRE
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Edma
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Pierre Grehal et Cie SA
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Publication of EP3976903A1 publication Critical patent/EP3976903A1/en
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Publication of EP3976903B8 publication Critical patent/EP3976903B8/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/026—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls for applying adhesive or joint compound to joint tapes, in particular drywall tapes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/165—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
    • E04F21/1655—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for finishing corner joints
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/165—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
    • E04F21/1657—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for applying tape to joints, e.g. drywall taper tools

Definitions

  • the present invention relates to a tape applicator with tape protection and a method of maintaining such an applicator.
  • Such an applicator is intended for laying a strip of paper or similar material, in the form of a roll, between two adjacent plasterboards, in construction or renovation, and this by means of a pasty coating.
  • the coating fills the space between the two plates and the band maintains the assembly.
  • the strip is laid between two plates arranged on the same plane or at an angle. Once the coating and the strip have been positioned, the user smooths the assembly using a flat or angled spatula for the angles. The tape thus ensures a perfectly smooth joint between the plates.
  • Band applicators are already known, commonly called “banjo”, illustrated, for example in the document US2328571 . They include a filler reservoir in which the strip is loaded with filler during application. They also include a dispenser for jointing tape on a roll to carry out numerous joints, especially on large construction sites.
  • the tank has, with reference to the position of use, an entry slot for the strip formed between a free end of a rear wall of the tank and a first free end of a bottom wall of the tank, and a strip outlet slot provided between a free end of a front wall of the tank and a second free end of the bottom wall of the tank.
  • the latter further comprises two side walls, one of which constitutes a removable side cover for access to the interior of the reservoir.
  • the cover can be removable by removal or by pivoting.
  • the cover is opened, the strip is manually placed against the rear, upper and front walls, then the space between the strip thus positioned and the lower surface of the tank is filled with filler. .
  • An application head is generally intended to be fixed on the front wall of the reservoir, above the outlet slot, to ensure proper application of the strip, that is to say training of the strip loaded with coating out of the applicator and pressing the strip against the plasterboard.
  • a finishing smoothing is then carried out by the user using a spatula.
  • the application head which generally comprises at least one drive roller which pulls on the strip and which applies it against the plasterboard, by friction against the coating and by friction against the entrance slot of the strip.
  • the phenomenon of abrasion also appears at the level of the inlet slot which constitutes a point of inflection in the tape, between the reel and the outlet slot, in particular when the reservoir is full and the tape is applied against the top wall of the tank.
  • a jointing tape applicator between two plasterboards according to the preamble of claim 1 is known from US 2003/066611 A1 .
  • An object of the present invention is therefore to provide an applicator of simple design and easy maintenance, allowing rapid application of the tape, while limiting the risk of the tape breaking at the entry slot.
  • this rapid laying can also be of technical interest if the coating used is particularly fluid.
  • a liquid coating has a high risk of leaking through the inlet slot, even if the movement of the strip tends to drive the coating towards the outlet slot.
  • the present invention also aims to provide a versatile applicator, that is to say one that can adapt to the use of coatings of different viscosities, while limiting the risk of the strip breaking during application.
  • An object of the present invention is therefore to provide a tape applicator provided with adjustment means that are easy to implement and robust, not very sensitive to abrasion and heat, and inexpensive, that is to say easily replaceable, without tools.
  • the geometry of the slot is modified and adapted to receive self-fixing protective sleeves, the thickness of which is chosen to adapt the height of the slot to the viscosity of the coating used.
  • the subject of the invention is a jointing strip applicator between two plasterboards, the applicator comprising a reel for a jointing strip on a roll and a coating reservoir in which the strip is unrolled in use, the reservoir having, with reference to the position of use, an inlet slot for the band provided between a free end of a rear wall of the reservoir and a first free end of a lower wall of the reservoir, and an outlet slot for the strip provided between a free end of a front wall of the tank and a second free end of the bottom wall of the tank, the latter further comprising two side walls, one of which constitutes a removable side cover for access to the inside of the tank.
  • the free end of the rear wall of the tank and the first free end of the lower wall of the tank comprise a cylinder of section greater than a thickness of the wall to which each cylinder is attached, and in that each cylinder is covered by a removable protective sleeve, of section complementary to the cylinder than the sleeve covers, each protective sleeve having a longitudinal opening delimited by two locking edges against the wall carrying the cylinder that the sleeve covers.
  • the invention also relates to a kit for applying a jointing strip between two plasterboards, the kit comprising a previous applicator and a plurality of protective sleeves of different thicknesses to allow height adjustment of the entry depending on the viscosity of the filler to be used.
  • FIG. 1 An applicator provided with tape protection means at the entrance slot according to the invention is illustrated in figures 1 and 2 .
  • the applicator 1 comprises a reel 2 for a jointing strip in a roll 3 (shown in dotted lines) and a coating reservoir 4 in which the strip unrolls, in use.
  • the applicator also includes a gripping handle 5 serving for its transport or its operational manipulation during the application of the strip.
  • the applicator may include a gripping strap (not shown) allowing the applicator to be gripped from below.
  • the reservoir 4 has, with reference to the position of use, an inlet slot 6 for the strip provided between a free end 7a of a rear wall 7 of the tank and a first free end 8a of a bottom wall 8 of the tank.
  • Reservoir 4 also includes an outlet slot 9 for the strip provided between a free end 10a of a front wall 10 of the reservoir and a second free end 8b of the bottom wall 8 of the reservoir.
  • the reservoir further comprising two side walls 11 and 12, one of which constitutes a removable side cover 11 allowing access to the interior of the reservoir 4.
  • the applicator may include an application head 100 having particular functionalities, for example for applying the strip at an angle.
  • the invention provides means for effective and inexpensive protection of the inlet slot of the strip against abrasion and temperature rises, with very easy maintenance.
  • these means make it possible to reduce the coating leaks at the entry slot 6 of the strip 3, depending on the viscosity of the coating. They thus allow better control of the flow rate of plaster at the outlet slot 9.
  • the free end 7a of the rear wall 7 of the reservoir and the first free end 8a of the lower wall 8 of the reservoir each comprise a cylinder, respectively 7a1 and 8a1, of section D1 greater than a thickness E1 of the wall ( respectively 7 and 8) on which each cylinder 7a1 and 8a1 is attached.
  • each cylinder, respectively 7a1 and 8a1 is covered by a removable protective sleeve, respectively 201 and 202, of internal section complementary to the cylinder, respectively 7a1 and 8a1, which the sleeve covers.
  • the sleeves 201-202 are thus self-locking against the wall which carries the cylinders, since the edges 201b and 202b of the longitudinal openings 201a-202a are arranged at the junction between the wall and the cylinder, a junction which has a point of inflection preventing the sleeves from sliding or falling out of the cylinder.
  • These sleeves are advantageously made of metal, such as stainless steel. It thus has a much higher resistance to abrasion and heat than that of the plastic generally used for the manufacture of tape applicators.
  • the maintenance method for such a strip applicator comprises a first step of opening the side wall constituting the removable side cover 11 to access the interior of the tank 4 and the free ends 7a and 8a of the rear wall 7 and bottom wall 8.
  • the worn protective sleeve(s) 201-202 are removed from the free ends 7a and 8a of the rear wall 7 and/or of the lower wall 8 of the tank by sliding them along the cylinders 7a1-8a1 carried by said ends free.
  • New protective sleeves are then inserted by causing them to slide along the cylinders 7a1-8a1 carried by the free ends of the rear wall and the bottom wall of the tank.
  • the longitudinal opening of each sleeve is aligned with the wall 7 or 8 yet the cylinder on which the sleeve is slipped.
  • the blocking edges 201b and 202b of the longitudinal openings 201a-202a of the sleeves are then placed at the junction between the wall and the cylinder.
  • each cylinder 7a1-8a1 has a circular section
  • each protective sleeve 201-202 has an open C-shaped circular section. during the application, without stopping, and prevents the tape from tearing. It is then possible to increase the speed of application.
  • this structure of the sleeves also makes it possible to adapt the applicator to the viscosity of the coating used.
  • the protective sleeves 201-202 have a thickness such that, when inserted around the cylinders of the free end of the rear wall and the bottom wall, they are spaced by a slot height d entry such that, in use, the band can pass freely, but not the coating stored in the tank.
  • a jointing strip application kit between two plasterboards comprising a strip applicator and a plurality of protective sleeves of different thicknesses to allow adjustment in height of the entry slot according to the viscosity of the coating to be used.
  • an applicator is obtained which allows rapid application of the strip, without fear of tearing of the strip at the level of the entry slot, and without fear of an alteration of the entry slot due abrasion and friction temperature.
  • the applicator is very versatile since it adapts to different coating viscosities.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Coating Apparatus (AREA)

Description

La présente invention concerne un applicateur de bande à protection de bande et un procédé de maintenance d'un tel applicateur.The present invention relates to a tape applicator with tape protection and a method of maintaining such an applicator.

Un tel applicateur est destiné à la pose d'une bande en papier ou matériau similaire, se présentant sous forme de rouleau, entre deux plaques de plâtre adjacentes, en construction ou en rénovation, et ceci par l'intermédiaire d'un enduit pâteux.Such an applicator is intended for laying a strip of paper or similar material, in the form of a roll, between two adjacent plasterboards, in construction or renovation, and this by means of a pasty coating.

Ainsi, l'enduit comble l'espace entre les deux plaques et la bande maintient l'ensemble.Thus, the coating fills the space between the two plates and the band maintains the assembly.

La pose de bande se fait entre deux plaques disposées sur un même plan ou en angle. Une fois l'enduit et la bande positionnés, l'utilisateur lisse l'ensemble à l'aide d'une spatule plate ou coudée pour les angles. La bande assure ainsi d'obtenir un joint parfaitement lisse entre les plaques.The strip is laid between two plates arranged on the same plane or at an angle. Once the coating and the strip have been positioned, the user smooths the assembly using a flat or angled spatula for the angles. The tape thus ensures a perfectly smooth joint between the plates.

On connaît déjà des applicateurs de bande, communément appelés « banjo », illustrés, par exemple dans le document US2328571 . Ils comprennent un réservoir d'enduit dans lequel la bande se charge en enduit lors de l'application. Ils comprennent également un dévidoir d'une bande de jointement en rouleau pour effectuer de nombreux jointements, notamment sur les grands chantiers.Band applicators are already known, commonly called "banjo", illustrated, for example in the document US2328571 . They include a filler reservoir in which the strip is loaded with filler during application. They also include a dispenser for jointing tape on a roll to carry out numerous joints, especially on large construction sites.

À cette fin, le réservoir présente, par référence à la position d'utilisation, une fente d'entrée de la bande ménagée entre une extrémité libre d'une paroi arrière du réservoir et une première extrémité libre d'une paroi inférieure du réservoir, et une fente de sortie de la bande ménagée entre une extrémité libre d'une paroi frontale du réservoir et une deuxième extrémité libre de la paroi inférieure du réservoir.To this end, the tank has, with reference to the position of use, an entry slot for the strip formed between a free end of a rear wall of the tank and a first free end of a bottom wall of the tank, and a strip outlet slot provided between a free end of a front wall of the tank and a second free end of the bottom wall of the tank.

Pour remplir le réservoir, ce dernier comprend, en outre, deux parois latérales, dont l'une constitue un capot latéral amovible d'accès à l'intérieur du réservoir. Le capot peut être amovible par retrait ou par pivotement.To fill the reservoir, the latter further comprises two side walls, one of which constitutes a removable side cover for access to the interior of the reservoir. The cover can be removable by removal or by pivoting.

Pour remplir les applicateurs de type banjo, on ouvre le capot, on place manuellement la bande contre les parois arrière, supérieure et frontale, puis on remplit l'espace ménagé entre la bande ainsi positionnée et la surface inférieure du réservoir avec de l'enduit.To fill the banjo-type applicators, the cover is opened, the strip is manually placed against the rear, upper and front walls, then the space between the strip thus positioned and the lower surface of the tank is filled with filler. .

Une tête d'application est généralement destinée à être fixée sur la paroi frontale du réservoir, au-dessus de la fente de sortie, pour assurer une bonne application de la bande, c'est-à-dire un entrainement de la bande chargée d'enduit hors de l'applicateur et un plaquage de la bande contre les plaques de plâtre. Un lissage de finition est ensuite effectué par l'utilisateur à l'aide d'une spatule.An application head is generally intended to be fixed on the front wall of the reservoir, above the outlet slot, to ensure proper application of the strip, that is to say training of the strip loaded with coating out of the applicator and pressing the strip against the plasterboard. A finishing smoothing is then carried out by the user using a spatula.

Lors de l'application de la bande, celle-ci subit de fortes contraintes : par la tête d'application qui comprend généralement au moins une roulette d'entrainement qui tire sur la bande et qui l'applique contre les plaques de plâtre, par le frottement contre l'enduit et par le frottement contre la fente d'entrée de la bande.During the application of the strip, the latter is subjected to strong stresses: by the application head which generally comprises at least one drive roller which pulls on the strip and which applies it against the plasterboard, by friction against the coating and by friction against the entrance slot of the strip.

Le phénomène d'abrasion lors de l'application de la bande est connu et se manifeste le plus souvent au niveau de la fente de sortie qui subit des frottements importants par la bande chargée d'enduit. En outre, ces frottements génèrent une forte montée en température qui augmente l'érosion de la fente de sortie, le réservoir étant généralement en plastique.The phenomenon of abrasion during the application of the strip is known and most often manifests itself at the level of the exit slot which undergoes significant friction by the strip loaded with coating. In addition, this friction generates a strong rise in temperature which increases the erosion of the outlet slot, the reservoir generally being made of plastic.

Le phénomène d'abrasion se manifeste également au niveau de la fente d'entrée qui constitue un point d'inflexion dans la bande, entre le dévidoir et la fente de sortie, en particulier lorsque le réservoir est plein et que la bande est appliquée contre la paroi supérieure du réservoir.The phenomenon of abrasion also appears at the level of the inlet slot which constitutes a point of inflection in the tape, between the reel and the outlet slot, in particular when the reservoir is full and the tape is applied against the top wall of the tank.

Ainsi, en cas de traction trop forte, par exemple lorsque le mouvement d'application est rapide, la bande chauffe fortement à l'entrée du réservoir, et il est fréquent qu'elle casse, ce qui oblige à ouvrir le réservoir et à replacer la bande. Cette opération est particulièrement chronophage et salissante lorsque le réservoir est plein.Thus, in the event of too strong traction, for example when the application movement is rapid, the strip heats up strongly at the inlet of the tank, and it often breaks, which makes it necessary to open the tank and replace the band. This operation is particularly time-consuming and messy when the tank is full.

Un applicateur de bande de jointement entre deux plaques de plâtre selon le préambule de la revendication 1 est connu de US 2003/066611 A1 .A jointing tape applicator between two plasterboards according to the preamble of claim 1 is known from US 2003/066611 A1 .

Un objectif de la présente invention est donc de proposer un applicateur de conception simple et d'entretien facile, permettant une application rapide de la bande, tout en limitant les risques de rupture de la bande au niveau de la fente d'entrée.An object of the present invention is therefore to provide an applicator of simple design and easy maintenance, allowing rapid application of the tape, while limiting the risk of the tape breaking at the entry slot.

Outre l'intérêt économique d'une pose rapide de la bande, cette pose rapide peut également présenter un intérêt technique si l'enduit utilisé est particulièrement fluide.In addition to the economic interest of rapid laying of the strip, this rapid laying can also be of technical interest if the coating used is particularly fluid.

En effet, certains utilisateurs utilisent un enduit plus liquide que les enduits vendus prêts à l'emploi, pour des raisons pratiques, économiques ou techniques.Indeed, some users use a coating that is more liquid than the coatings sold ready for use, for practical, economic or technical reasons.

Or, un enduit liquide a de forts risques de fuir à travers la fente d'entrée, même si le mouvement de la bande a tendance à entraîner l'enduit vers la fente de sortie.However, a liquid coating has a high risk of leaking through the inlet slot, even if the movement of the strip tends to drive the coating towards the outlet slot.

La présente invention vise également à proposer un applicateur polyvalent, c'est-à-dire pouvant s'adapter à l'utilisation d'enduits de viscosités différentes, tout en limitant le risque de rupture de la bande lors de la pose.The present invention also aims to provide a versatile applicator, that is to say one that can adapt to the use of coatings of different viscosities, while limiting the risk of the strip breaking during application.

Un objectif de la présente invention est donc de proposer un applicateur de bande muni de moyens de réglage faciles à mettre en oeuvre et robustes, peu sensibles à l'abrasion et à la chaleur, et peu coûteux, c'est-à-dire facilement remplaçables, sans outils.An object of the present invention is therefore to provide a tape applicator provided with adjustment means that are easy to implement and robust, not very sensitive to abrasion and heat, and inexpensive, that is to say easily replaceable, without tools.

Selon l'invention, la géométrie de la fente est modifiée et adaptée pour recevoir des manchons de protection auto fixant, dont l'épaisseur est choisie pour adapter la hauteur de la fente à la viscosité de l'enduit employé.According to the invention, the geometry of the slot is modified and adapted to receive self-fixing protective sleeves, the thickness of which is chosen to adapt the height of the slot to the viscosity of the coating used.

Ainsi, l'invention a pour objet un applicateur de bande de jointement entre deux plaques de plâtre, l'applicateur comprenant un dévidoir pour une bande de jointement en rouleau et un réservoir d'enduit dans lequel se déroule la bande en utilisation, le réservoir présentant, par référence à la position d'utilisation, une fente d'entrée de la bande ménagée entre une extrémité libre d'une paroi arrière du réservoir et une première extrémité libre d'une paroi inférieure du réservoir, et une fente de sortie de la bande ménagée entre une extrémité libre d'une paroi frontale du réservoir et une deuxième extrémité libre de la paroi inférieure du réservoir, ce dernier comprenant, en outre, deux parois latérales, dont l'une constitue un capot latéral amovible d'accès à l'intérieur du réservoir. Selon l'invention, l'extrémité libre de la paroi arrière du réservoir et la première extrémité libre de la paroi inférieure du réservoir comprennent un cylindre de section supérieure à une épaisseur de la paroi sur laquelle chaque cylindre est rattaché, et en ce que chaque cylindre est recouvert par un manchon de protection amovible, de section complémentaire au cylindre que le manchon recouvre, chaque manchon de protection présentant une ouverture longitudinale délimitée par deux bords de blocage contre la paroi portant le cylindre que le manchon recouvre.Thus, the subject of the invention is a jointing strip applicator between two plasterboards, the applicator comprising a reel for a jointing strip on a roll and a coating reservoir in which the strip is unrolled in use, the reservoir having, with reference to the position of use, an inlet slot for the band provided between a free end of a rear wall of the reservoir and a first free end of a lower wall of the reservoir, and an outlet slot for the strip provided between a free end of a front wall of the tank and a second free end of the bottom wall of the tank, the latter further comprising two side walls, one of which constitutes a removable side cover for access to the inside of the tank. According to the invention, the free end of the rear wall of the tank and the first free end of the lower wall of the tank comprise a cylinder of section greater than a thickness of the wall to which each cylinder is attached, and in that each cylinder is covered by a removable protective sleeve, of section complementary to the cylinder than the sleeve covers, each protective sleeve having a longitudinal opening delimited by two locking edges against the wall carrying the cylinder that the sleeve covers.

Selon des modes particuliers de réalisation :

  • chaque cylindre peut présenter une section circulaire, chaque manchon de protection présentant une section circulaire ouverte en C ; et/ou
  • les manchons de protection peuvent présenter une épaisseur telle que, lorsqu'ils sont insérés autour des cylindres de l'extrémité libre de la paroi arrière et de la paroi inférieure, ils sont espacés d'une hauteur de fente d'entrée telle que, en utilisation, la bande peut passer librement, mais pas l'enduit stocké dans le réservoir.
According to particular embodiments:
  • each cylinder may have a circular section, each protective sleeve having an open C-shaped circular section; and or
  • the protective sleeves may have a thickness such that, when inserted around the cylinders of the free end of the rear wall and the bottom wall, they are spaced by an entry slot height such that, in use, the band can pass freely, but not the plaster stored in the tank.

L'invention a également pour objet un kit d'application de bande de jointement entre deux plaques de plâtre, le kit comprenant un applicateur précédent et une pluralité de manchons de protection d'épaisseurs différentes pour permettre un réglage en hauteur de la fente d'entrée en fonction de la viscosité de l'enduit devant être utilisé.The invention also relates to a kit for applying a jointing strip between two plasterboards, the kit comprising a previous applicator and a plurality of protective sleeves of different thicknesses to allow height adjustment of the entry depending on the viscosity of the filler to be used.

L'invention a également pour objet un procédé de maintenance d'un applicateur de bande de jointement précédent, le procédé comprenant les étapes suivantes :

  1. a) ouvrir la paroi latérale constituant le capot latéral amovible pour accéder à l'intérieur du réservoir et aux extrémités libres de la paroi arrière et de la paroi inférieure ;
  2. b) retirer les manchons de protection des extrémités libres de la paroi arrière et de la paroi inférieure du réservoir en les faisant coulisser le long des cylindres portés par lesdites extrémités libres de la paroi arrière et de la paroi inférieure du réservoir ;
  3. c) insérer de nouveaux manchons de protection en les faisant coulisser le long des cylindres portés par les extrémités libres de la paroi arrière et de la paroi inférieure du réservoir ;
  4. d) refermer la paroi latérale constituant le capot latéral amovible.
The invention also relates to a method for maintaining a previous jointing strip applicator, the method comprising the following steps:
  1. a) open the side wall constituting the removable side cover to access the inside of the tank and the free ends of the rear wall and the bottom wall;
  2. b) remove the protective sleeves from the free ends of the rear wall and from the bottom wall of the tank by sliding them along the cylinders carried by said free ends of the rear wall and from the bottom wall of the tank;
  3. c) insert new protective sleeves by sliding them along the cylinders carried by the free ends of the rear wall and the wall tank bottom;
  4. d) close the side wall constituting the removable side cover.

D'autres caractéristiques de l'invention seront énoncées dans la description détaillée ci-après, faite en référence aux dessins annexés, qui représentent, respectivement : :

  • [Fig. 1] représente une vue schématique en perspective d'un applicateur de bande selon l'invention en position d'utilisation, c'est-à-dire en position d'application d'une bande ;
  • [Fig. 2] représente une vue schématique en perspective de l'applicateur de bande de la figure 1 dans lequel le capot d'accès à l'intérieur du réservoir est ouvert ;
  • [Fig. 3] représente une vue schématique en perspective d'un applicateur selon l'invention comprenant un système de protection de la fente d'entrée de bande ;
  • [Fig. 4] représente une vue schématique en perspective d'un agrandissement de la figure 3 centré sur la fente d'entrée de bande, qui comprend des manchons de protection contre l'abrasion ; et
  • [Fig. 5] représente une vue schématique en perspective éclatée de la figure 4 illustrant la structure particulière des manchons de protection selon l'invention.
Other characteristics of the invention will be set out in the detailed description below, made with reference to the appended drawings, which represent, respectively:
  • [ Fig. 1 ] shows a schematic perspective view of a tape applicator according to the invention in the position of use, that is to say in the position for applying a tape;
  • [ Fig. 2 ] shows a schematic perspective view of the tape applicator of the figure 1 in which the access cover to the interior of the reservoir is open;
  • [ Fig. 3 ] shows a schematic perspective view of an applicator according to the invention comprising a system for protecting the tape entry slot;
  • [ Fig. 4 ] represents a schematic perspective view of an enlargement of the picture 3 centered on the tape entry slot, which includes protective abrasion sleeves; And
  • [ Fig. 5 ] represents a schematic exploded perspective view of the figure 4 illustrating the particular structure of the protective sleeves according to the invention.

Un applicateur muni de moyens de protection de bande au niveau de la fente d'entrée selon l'invention est illustré aux figures 1 et 2.An applicator provided with tape protection means at the entrance slot according to the invention is illustrated in figures 1 and 2 .

L'applicateur 1 comprend un dévidoir 2 pour une bande de jointement en rouleau 3 (illustré en pointillé) et un réservoir 4 d'enduit dans lequel se déroule la bande, en utilisation.The applicator 1 comprises a reel 2 for a jointing strip in a roll 3 (shown in dotted lines) and a coating reservoir 4 in which the strip unrolls, in use.

L'applicateur comprend également une poignée de préhension 5 servant à son transport ou sa manipulation opérationnelle lors de l'application de la bande.The applicator also includes a gripping handle 5 serving for its transport or its operational manipulation during the application of the strip.

Alternativement ou en combinaison, l'applicateur peut comprendre une sangle de préhension (non illustrée) permettant de saisir l'applicateur par le dessous.Alternatively or in combination, the applicator may include a gripping strap (not shown) allowing the applicator to be gripped from below.

Comme illustré en figure 2, le réservoir 4 présente, par référence à la position d'utilisation, une fente d'entrée 6 de la bande ménagée entre une extrémité libre 7a d'une paroi arrière 7 du réservoir et une première extrémité libre 8a d'une paroi inférieure 8 du réservoir.As illustrated in figure 2 , the reservoir 4 has, with reference to the position of use, an inlet slot 6 for the strip provided between a free end 7a of a rear wall 7 of the tank and a first free end 8a of a bottom wall 8 of the tank.

Le réservoir 4 comprend également une fente de sortie 9 de la bande ménagée entre une extrémité libre 10a d'une paroi frontale 10 du réservoir et une deuxième extrémité libre 8b de la paroi inférieure 8 du réservoir.Reservoir 4 also includes an outlet slot 9 for the strip provided between a free end 10a of a front wall 10 of the reservoir and a second free end 8b of the bottom wall 8 of the reservoir.

Le réservoir comprenant, en outre, deux parois latérales 11 et 12, dont l'une constitue un capot latéral amovible 11 permettant l'accès à l'intérieur du réservoir 4.The reservoir further comprising two side walls 11 and 12, one of which constitutes a removable side cover 11 allowing access to the interior of the reservoir 4.

L'applicateur peut comporter une tête d'application 100 ayant des fonctionnalités particulières, par exemple d'application de la bande dans un angle.The applicator may include an application head 100 having particular functionalities, for example for applying the strip at an angle.

Comme illustré aux figures 3 à 5, l'invention prévoit des moyens permettant une protection efficace et peu coûteuse de la fente d'entrée de la bande contre l'abrasion et les hausses de température, et ce avec un entretien très facile.As shown in figures 3 to 5 , the invention provides means for effective and inexpensive protection of the inlet slot of the strip against abrasion and temperature rises, with very easy maintenance.

En outre, ces moyens permettent de réduire les fuites d'enduit au niveau de la fente d'entrée 6 de la bande 3, en fonction de la viscosité de l'enduit. Ils permettent ainsi un meilleur contrôle du débit d'enduit au niveau de la fente de sortie 9.In addition, these means make it possible to reduce the coating leaks at the entry slot 6 of the strip 3, depending on the viscosity of the coating. They thus allow better control of the flow rate of plaster at the outlet slot 9.

Ainsi, l'extrémité libre 7a de la paroi arrière 7 du réservoir et la première extrémité libre 8a de la paroi inférieure 8 du réservoir comprennent chacune un cylindre, respectivement 7a1 et 8a1, de section D1-supérieure à une épaisseur E1 de la paroi (respectivement 7 et 8) sur laquelle chaque cylindre 7a1 et 8a1 est rattaché.Thus, the free end 7a of the rear wall 7 of the reservoir and the first free end 8a of the lower wall 8 of the reservoir each comprise a cylinder, respectively 7a1 and 8a1, of section D1 greater than a thickness E1 of the wall ( respectively 7 and 8) on which each cylinder 7a1 and 8a1 is attached.

Selon l'invention, chaque cylindre, respectivement 7a1 et 8a1, est recouvert par un manchon de protection amovible, respectivement 201 et 202, de section intérieure complémentaire au cylindre, respectivement 7a1 et 8a1, que le manchon recouvre.According to the invention, each cylinder, respectively 7a1 and 8a1, is covered by a removable protective sleeve, respectively 201 and 202, of internal section complementary to the cylinder, respectively 7a1 and 8a1, which the sleeve covers.

Chaque manchon de protection 201 et 202 présente une ouverture longitudinale 201a-202a, délimitée par deux bords de blocage, respectivement 201b et 202b contre la paroi (respectivement 7 et 8) portant le cylindre, respectivement 7a1 et 8a1, que le manchon, respectivement 201 et 202, recouvre.Each protective sleeve 201 and 202 has a longitudinal opening 201a-202a, delimited by two locking edges, respectively 201b and 202b against the wall (respectively 7 and 8) carrying the cylinder, respectively 7a1 and 8a1, that the sleeve, respectively 201 and 202, covers.

Les manchons 201-202 sont ainsi auto bloquant contre la paroi qui porte les cylindres, car les bords 201b et 202b des ouvertures longitudinales 201a-202a sont agencés à la jonction entre la paroi et le cylindre, jonction qui présente un point d'inflexion empêchant les manchons de coulisser ou de tomber hors du cylindre.The sleeves 201-202 are thus self-locking against the wall which carries the cylinders, since the edges 201b and 202b of the longitudinal openings 201a-202a are arranged at the junction between the wall and the cylinder, a junction which has a point of inflection preventing the sleeves from sliding or falling out of the cylinder.

Ces manchons sont avantageusement en métal, tel que de l'acier inoxydable. Il présente ainsi une résistance à l'abrasion et à la chaleur très supérieure à celle du plastique généralement utilisé pour la fabrication des applicateurs de bande.These sleeves are advantageously made of metal, such as stainless steel. It thus has a much higher resistance to abrasion and heat than that of the plastic generally used for the manufacture of tape applicators.

Par ailleurs, cette structure des extrémités libres des parois arrière et inférieure est très facile à réaliser par moulage.Furthermore, this structure of the free ends of the rear and lower walls is very easy to produce by molding.

Le changement des manchons, s'ils sont usés, est très facile.Changing the sleeves, if worn, is very easy.

[Le procédé de maintenance d'un tel applicateur de bande comprend une première étape d'ouverture de la paroi latérale constituant le capot latéral amovible 11 pour accéder à l'intérieur du réservoir 4 et aux extrémités libres 7a et 8a de la paroi arrière 7 et de la paroi inférieure 8.[The maintenance method for such a strip applicator comprises a first step of opening the side wall constituting the removable side cover 11 to access the interior of the tank 4 and the free ends 7a and 8a of the rear wall 7 and bottom wall 8.

Puis, on retire le ou les manchons de protection usés 201-202 des extrémités libres 7a et 8a de la paroi arrière 7 et/ou de la paroi inférieure 8 du réservoir en les faisant coulisser le long des cylindres 7a1-8a1 portés par lesdites extrémités libres.Then, the worn protective sleeve(s) 201-202 are removed from the free ends 7a and 8a of the rear wall 7 and/or of the lower wall 8 of the tank by sliding them along the cylinders 7a1-8a1 carried by said ends free.

On insère alors de nouveaux manchons de protection en les faisant coulisser le long des cylindres 7a1-8a1 portés par les extrémités libres de la paroi arrière et de la paroi inférieure du réservoir. Pour cela, on aligne l'ouverture longitudinale de chaque manchon avec la paroi 7 ou 8 pourtant le cylindre sur lequel on enfile le manchon. Les bords de blocages 201b et 202b des ouvertures longitudinales 201a-202a des manchons se placent alors à la jonction entre la paroi et le cylindre.New protective sleeves are then inserted by causing them to slide along the cylinders 7a1-8a1 carried by the free ends of the rear wall and the bottom wall of the tank. For this, the longitudinal opening of each sleeve is aligned with the wall 7 or 8 yet the cylinder on which the sleeve is slipped. The blocking edges 201b and 202b of the longitudinal openings 201a-202a of the sleeves are then placed at the junction between the wall and the cylinder.

Finalement, on referme la paroi latérale 11 constituant le capot latéral amovible.Finally, the side wall 11 constituting the removable side cover is closed.

De manière préférentielle, chaque cylindre 7a1-8a1 présente une section circulaire, et chaque manchon de protection 201-202 présente une section circulaire ouverte en C. Ceci permet d'assurer un contact optimal avec la bande au cours de l'application, sans arrête, et évite que la bande ne se déchire. Il es alors possible d'augmenter la vitesse d'application.Preferably, each cylinder 7a1-8a1 has a circular section, and each protective sleeve 201-202 has an open C-shaped circular section. during the application, without stopping, and prevents the tape from tearing. It is then possible to increase the speed of application.

Outre la protection contre l'abrasion, cette structure des manchons permet, en outre, d'adapter l'applicateur à la viscosité de l'enduit utilisé.In addition to protection against abrasion, this structure of the sleeves also makes it possible to adapt the applicator to the viscosity of the coating used.

Ainsi, un utilisateur qui souhaite utiliser un enduit plus fluide que la normale va changer les manchons pour que la fente d'entrée de la bande soit moins haute, limitant ainsi les fuites d'enduit.Thus, a user who wishes to use a coating that is more fluid than normal will change the sleeves so that the strip entry slot is lower, thus limiting coating leaks.

À cette fin, les manchons de protection 201-202 présentent une épaisseur telle que, lorsqu'ils sont insérés autour des cylindres de l'extrémité libre de la paroi arrière et de la paroi inférieure, ils sont espacés d'une hauteur de fente d'entrée telle que, en utilisation, la bande peut passer librement, mais pas l'enduit stocké dans le réservoir.To this end, the protective sleeves 201-202 have a thickness such that, when inserted around the cylinders of the free end of the rear wall and the bottom wall, they are spaced by a slot height d entry such that, in use, the band can pass freely, but not the coating stored in the tank.

On pourra alors proposer un kit d'application de bande de jointement entre deux plaques de plâtre, comprenant un applicateur de bande et une pluralité de manchons de protection d'épaisseurs différentes pour permettre un réglage en hauteur de la fente d'entrée en fonction de la viscosité de l'enduit devant être utilisé.It will then be possible to propose a jointing strip application kit between two plasterboards, comprising a strip applicator and a plurality of protective sleeves of different thicknesses to allow adjustment in height of the entry slot according to the viscosity of the coating to be used.

Grâce à l'invention, on obtient un applicateur permettant une application rapide de la bande, sans crainte d'un déchirement de la bande au niveau de la fente d'entrée, et sans crainte d'une altération de la fente d'entrée due à l'abrasion et à la température de frottement.Thanks to the invention, an applicator is obtained which allows rapid application of the strip, without fear of tearing of the strip at the level of the entry slot, and without fear of an alteration of the entry slot due abrasion and friction temperature.

En outre, l'applicateur est très polyvalent puisqu'il s'adapte à différentes viscosités d'enduit.In addition, the applicator is very versatile since it adapts to different coating viscosities.

Claims (5)

  1. Applicator (1) of jointing tape for joining two sheets of plasterboard, the applicator comprising a payout device (2) for paying out a jointing tape from a roll (3) and a mud chamber (4) through which the tape is paid out in use, the chamber having, with reference to the use position, a tape inlet slot (6) formed between a free end (7a) of a rear wall (7) of the chamber and a first free end (8a) of a lower wall (8) of the chamber, and a tape outlet slot (9) formed between a free end (10a) of a frontal wall (10) of the chamber and a second free end (8b) of the lower wall (8) of the chamber, the latter also comprising two side walls (11-12), the free end (7a) of the rear wall (7) of the chamber comprising, at the inlet slot (6), a first cylinder (7a1) with a cross section (D1) greater than a thickness (E1) of the wall to which the first cylinder is attached, characterized in that one of the two side walls (11-12) constitutes a removable side cover for accessing the inside of the chamber, and in that, at the inlet slot (6), the first free end (8a) of the lower wall (8) of the chamber comprises a second cylinder (8a1) with a cross section (D1) greater than a thickness (E1) of the wall to which the second cylinder is attached, and in that each cylinder (7a1, 8a1) is covered by a removable protective sleeve (201-202) with an interior cross section that complements the cylinder that the sleeve covers, each protective sleeve having a longitudinal opening (201a-202a) delimited by two immobilization edges (201b-202b) for immobilization against the wall bearing the cylinder that the sleeve covers.
  2. Applicator (1) according to Claim 1, wherein each cylinder has a circular cross section, each protective sleeve having an open C-shaped circular cross section.
  3. Applicator (1) according to either one of Claims 1 and 2, wherein the protective sleeves have a thickness such that when they are inserted around the cylinders of the free end of the rear wall and of the lower wall, they are spaced apart by an inlet slot height that is such that, in use, the tape is able to pass through freely but the mud stored in the chamber is not.
  4. Kit for applying jointing tape for joining two sheets of plasterboard, characterized in that it comprises an applicator (1) according to any one of Claims 1 to 3 and a plurality of protective sleeves of different thicknesses to allow the height of the inlet slot to be adjusted depending on the viscosity of the mud that is to be used.
  5. Method for maintaining a jointing tape applicator according to any one of Claims 1 to 3, comprising the following steps:
    a) opening the side wall constituting the removable side cover in order to access the inside of the chamber and the free ends of the rear wall and of the lower wall;
    b) removing the protective sleeves from the free ends of the rear wall and of the lower wall of the chamber by sliding them along the cylinders borne by said free ends of the rear wall and of the lower wall of the chamber;
    c) inserting new protective sleeves by sliding them along the cylinders borne by the free ends of the rear wall and of the lower wall of the chamber;
    d) closing the side wall constituting the removable side cover.
EP19739672.4A 2019-05-29 2019-05-29 Strip applicator with strip protection and method for maintaining such an applicator Active EP3976903B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2019/000088 WO2020240100A1 (en) 2019-05-29 2019-05-29 Strip applicator with strip protection and method for maintaining such an applicator

Publications (3)

Publication Number Publication Date
EP3976903A1 EP3976903A1 (en) 2022-04-06
EP3976903B1 true EP3976903B1 (en) 2023-07-05
EP3976903B8 EP3976903B8 (en) 2023-08-09

Family

ID=67262779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19739672.4A Active EP3976903B8 (en) 2019-05-29 2019-05-29 Strip applicator with strip protection and method for maintaining such an applicator

Country Status (3)

Country Link
US (1) US11927021B2 (en)
EP (1) EP3976903B8 (en)
WO (1) WO2020240100A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328571A (en) 1941-11-14 1943-09-07 Nat Gypsum Co Tape and cement applying machine
US4196028A (en) 1977-08-26 1980-04-01 Mills Harold R Taping tool
US6668897B2 (en) * 2001-08-16 2003-12-30 David T. Gunn Tape and joint compound dispenser for taping drywall joints
US20090094936A1 (en) * 2007-10-15 2009-04-16 Bmb Products, Llc Drywall tape dispensing mudbox

Also Published As

Publication number Publication date
EP3976903B8 (en) 2023-08-09
US11927021B2 (en) 2024-03-12
US20220228375A1 (en) 2022-07-21
WO2020240100A1 (en) 2020-12-03
EP3976903A1 (en) 2022-04-06

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