EP2032315B1 - Platform tool for installing a seal in a groove in particular for device for projecting water jets - Google Patents

Platform tool for installing a seal in a groove in particular for device for projecting water jets Download PDF

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Publication number
EP2032315B1
EP2032315B1 EP07788818A EP07788818A EP2032315B1 EP 2032315 B1 EP2032315 B1 EP 2032315B1 EP 07788818 A EP07788818 A EP 07788818A EP 07788818 A EP07788818 A EP 07788818A EP 2032315 B1 EP2032315 B1 EP 2032315B1
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EP
European Patent Office
Prior art keywords
tool
seal
groove
tool according
tunnel
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EP07788818A
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German (de)
French (fr)
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EP2032315A1 (en
Inventor
Laurent Schmit
Christian Decolin
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Rieter Perfojet SAS
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Rieter Perfojet SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0092—Tools moving along strips, e.g. decorating or sealing strips, to insert them in, or remove them from, grooves or profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0028—Tools for removing or installing seals
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the present invention relates to tools for placing a seal in a groove. It also relates to the methods of setting up a seal in a groove and to the water jet projection devices with a seal receiving throat, in which a tool is used for placing the seal.
  • water-jet bonding is a great deal of use which is a fibrous web bonding by water jet bonding.
  • an injector is required which uniformly distributes the water under pressure, ranging from 1 to 400 bar, over the entire width of the web formed by the machine. Essentially, distribution is through a borehole, then distribution holes, followed by a distribution chamber, and distribution by a borehole, followed by a slot.
  • the device for projecting water jets also called injector, comprises in particular a body and a jaw resistant to pressure and delimiting an inner chamber having an inlet. The inner chamber communicates with the interposition of a perforated plate with an exit slot opening out of the jaw or the injector.
  • This groove has the shape of an athletic track having two opposite parts each delimited by an inner edge and an outer edge, and two curved end portions.
  • An O-ring is placed in this groove to maintain and seal the perforated plate. The goal is that pressurized water can only exit the injector through the holes (nozzles) in the perforated plate.
  • Pressurized water comes to press the perforated plate on a seal holder on which are mounted the seals.
  • the seal holder can be easily removed from one side of the injector when there is no pressure.
  • the possible replacement of an O-ring can be done outside the injector, and therefore without difficulty.
  • the invention aims to greatly shorten the duration of the seal change while using fewer parts than in the US 6,012,654 .
  • the invention therefore relates to a tool for placing a seal in a groove.
  • the tool comprises a shoe having a planar and smooth sliding surface and a lower face on which are arranged, successively in the longitudinal direction of sliding of the shoe, a ramp away from the upper face as and when it approaches a platform, flat and smooth, forming the lower surface of the lower face, the platform being followed by a training toc.
  • the tool comprises means for indicating the direction of introduction of the pad, for example a simple arrow affixed to the pad.
  • the tool according to the invention comprises only one piece.
  • the change of joint in the case of the previous system required two hours.
  • a seal can be changed in five minutes.
  • the change of seal in the previous system necessitated a setting of the seal on the tool, an introduction of the tool and the seal into the injector, an introduction of the perforated plate to press the seal in the groove, while according to the invention, the seal is put on the tool even when the tool is introduced into the injector and it is the tool itself, by its movement and its conformation, which puts the seal in place in the throat, without the need for additional part lowering the seal or the introduction of the perforated plate to press the seal into the groove.
  • the toc can be constituted by a simple pad around which is passed the curved portion of the seal, the pad being preferably located only in the middle portion, along the width, of the lower face.
  • the ramp is located only in the lateral parts, according to the width, of the lower face, in the form of two sub-ramps, on either side of a bar strengthening center. Good results are obtained when the ramp has a length, in the longitudinal direction, of 25 to 100 mm.
  • the ramp has a width of between 10 and 30 mm, and the greatest distance between the upper face and the lower face is between 5 and 20 mm.
  • the tool may be made of a metallic material or a plastic material.
  • the tool preferably has a width of between 10 and 30 mm.
  • the angle of the ramps can be between 5 ° and 45 °, and in particular be between 10 and 20 °, the best being that it is 15 °.
  • the platform has a length considered in the longitudinal direction of the tool of about 20 to 70 mm.
  • the subject of the invention is also an assembly consisting of a water jet projection device with a groove for receiving a seal and a tool for placing the seal according to the invention.
  • the water jet projection device comprises in particular a body and a jaw resistant to pressure and delimiting an inner chamber having an inlet and communicating with the interposition of a perforated plate with an exit slot opening out of the jaw or of the injector, an endless groove machined in the jaw surrounding the exit slot and having two opposing portions each delimited by an inner edge and an outer edge, and two end curved portions of which at least one is delimited only by an inner edge, and a first light on a first face front of the jaw, such that a tool for placing a seal in the groove can be introduced into the jaw and be removed, and preferably a second light on a second end face of the jaw of the same size as the first light.
  • the inlet width of the groove is less than the diameter of the seal, in the relaxed state, the perimeter of the seal is smaller than that of the groove, the seal being thus mounted stretched in the groove, and the outer edge the seal groove is inclined towards the exit slot so that the seal can catch easily.
  • the lights are, in operation, blocked by plugs.
  • the Figure 5 is a view similar to the figure 3 of a variant.
  • the injector shown in Figure 1 comprises body 1 to which is screwed a jaw 2, the assembly constituting the injector Stainless steel that withstands the pressure.
  • the body delimits an inner chamber 3 having an inlet and communicating through a slot 4, with the interposition of a perforated plate which is not shown in the drawing, with an exit slot 5 opening out of the jaw or the injector.
  • An endless groove 6 is machined in the jaw 2, surrounding the exit slot 5.
  • this groove must be mounted an elastic ring 7 of elastomeric material.
  • the groove 6 has two parts 8, 9 opposite rectilinear each delimited by an edge 10, 11 inside and an edge 12, 13 outside, and two parts (only one is shown) curves 14 end which are both delimited only by an inner edge. In these curved end portions, the groove is said to be open. Part of a seal that falls into the range thus defined will be easily applied to the edge 14 by springback if the seal is previously stretched.
  • a second light 15 is formed on a second end face of the jaw 2. It has dimensions such that a tool for placing a seal in the groove can pass.
  • a first light 15 of the same size is at the other end of the tunnel 16 delimited by these slots 15, by a face 17 of the body 1 and by the lower face 18 in which the groove 6 is machined.
  • the cross section of the lights 15 and therefore that of the tunnel is just greater than the rectangle delimited by the overall dimensions of the positioning tool shown in FIG. Figure 3 .
  • This tool made of a material that slides easily on stainless steel, consists of a pad having an upper face, rectangular, flat and smooth.
  • the left side, at the Figure 3 the tool is T-shaped having a shaft 21 and a bar 22.
  • the bar 22 is rectangular, having a width of 20 mm and a height of 10 mm.
  • the shaft 21 is substantially square, having a side of 10 mm.
  • the height of the tool H is 20 mm.
  • the lower face (greater than the figure) of the shaft 21 is flat and parallel to the face 20.
  • Two ramps 25 symmetrical to each other with respect to the longitudinal axis of the tool are arranged on the longitudinal edges of the tool.
  • the ramps 25 are inclined downwardly in a 15 ° slot from the top surface 20 of the tool to a platform 26 which is at the lowest level of the tool.
  • the platform 26 continues with a driving tip 24, which extends in height from the lowest part of the tool, therefore at the same level as the lowest part of the the platform 26 upwards to a height less than that of the platform so as to disengage upwards, a groove 23 open upwards (downwards in the figure).
  • the driving tip 24 is located only in the middle part, depending on the width of the underside of the tool. A seal can be placed in this groove 23 and thus threaded onto the driving tip 24, the inner face of the seal coming into contact with the vertical right wall of the platform 26.
  • the drive dog 24 constitutes the front end of the tool without delimiting a groove 23.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Earth Drilling (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Table Equipment (AREA)
  • Coating Apparatus (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

A tool for installing a seal in a groove (6), characterised in that it comprises a pad having a flat and smooth upper sliding face (20) and a lower face on which are arranged, successively according to the longitudinal sliding direction of the pad, a ramp (25) moving away from the upper face when it comes close to a platform (26), flat and smooth, forming the lowest surface of the lower face, the platform being followed by a driving dog.

Description

La présente invention se rapporte aux outils de mise en place d'un joint dans une gorge. Elle se rapporte aussi aux procédés de mise en place d'un joint dans une gorge et aux dispositifs de projection de jet d'eau à gorge de réception d'un joint, dans lesquels on utilise un outil de mise en place du joint.The present invention relates to tools for placing a seal in a groove. It also relates to the methods of setting up a seal in a groove and to the water jet projection devices with a seal receiving throat, in which a tool is used for placing the seal.

On utilise beaucoup, dans le domaine des non-tissés, le liage par jet d'eau qui est une consolidation de nappe fibreuse par liage par jet d'eau. On a besoin, à cet effet, d'un injecteur qui distribue uniformément l'eau sous pression, allant de 1 à 400 bars, sur toute la largeur du voile formé par la machine. On connaît essentiellement une distribution par l'intermédiaire d'un forage, puis de trous de distribution, suivis d'une chambre de répartition, et une distribution par un forage, suivie d'une fente. Le dispositif de projection de jets d'eau, dénommé aussi injecteur, comprend notamment un corps et un mors résistant à la pression et délimitant une chambre intérieure ayant une entrée. La chambre intérieure communique avec interposition d'une plaque perforée avec une fente de sortie débouchant à l'extérieur du mors ou de l'injecteur. Une gorge sans fin est usinée dans le mors, en entourant la fente de sortie. Cette gorge a la forme d'une piste d'athlétisme en ayant deux parties opposées délimitées chacune par un bord intérieur et un bord extérieur, et deux parties courbes d'extrémité. Un joint torique est placé dans cette gorge afin d'assurer le maintien et l'étanchéité de la plaque perforée. L'objectif est que l'eau sous pression ne puisse sortir de l'injecteur que par les trous (buses) de la plaque perforée.In the field of nonwovens, water-jet bonding is a great deal of use which is a fibrous web bonding by water jet bonding. For this purpose, an injector is required which uniformly distributes the water under pressure, ranging from 1 to 400 bar, over the entire width of the web formed by the machine. Essentially, distribution is through a borehole, then distribution holes, followed by a distribution chamber, and distribution by a borehole, followed by a slot. The device for projecting water jets, also called injector, comprises in particular a body and a jaw resistant to pressure and delimiting an inner chamber having an inlet. The inner chamber communicates with the interposition of a perforated plate with an exit slot opening out of the jaw or the injector. An endless groove is machined in the jaw, surrounding the exit slot. This groove has the shape of an athletic track having two opposite parts each delimited by an inner edge and an outer edge, and two curved end portions. An O-ring is placed in this groove to maintain and seal the perforated plate. The goal is that pressurized water can only exit the injector through the holes (nozzles) in the perforated plate.

Plusieurs systèmes de maintien et d'étanchéité de la plaque perforée ont été utilisés :

  • dans l'un d'entre eux, dit "système à bridage positif", la plaque perforée est plaquée grâce à un système mécanique extérieur au process, notamment grâce à un piston, contre une pièce extractible (semelle) comportant les joints toriques pour l'étanchéité. La semelle peut être extraite facilement de l'injecteur pour changer les joints toriques quand les pistons sont au repos et qu'il n'y a plus de pression dans l'injecteur. Le système de bridage exige de nombreuses pièces supplémentaires, de sorte que le coût de fabrication est élevé. Le système de bridage donne une grande hauteur et un grand encombrement. Le système de bridage rend l'injecteur plus pesant. Ce système manque de fiabilité dans le temps, en raison de l'usure du piston et des tirants. Enfin, il nécessite un système hydraulique supplémentaire pour alimenter le piston en eau ou en huile sous pression.
Several systems for holding and sealing the perforated plate have been used:
  • in one of them, called "positive clamping system", the perforated plate is plated thanks to a mechanical system external to the process, in particular thanks to a piston, against an extractable part (soleplate) comprising the O-rings for the sealing. The soleplate can be easily removed from the injector to change the O-rings when the pistons are at rest and there is no pressure in the injector. The clamping system requires many additional parts, so the manufacturing cost is high. The clamping system gives a great height and a large size. The clamping system makes the injector heavier. This system lacks reliability over time due to wear on the piston and tie rods. Finally, it requires an additional hydraulic system to supply the piston with water or oil under pressure.

C'est pourquoi on a préféré, à ce premier système, un système dit "autoclampé" à pièces extractibles, comme décrit au WO 03/070379 A1 et au WO 03/070378 A1 .This is why we preferred, to this first system, a system called "autoclamped" extractable parts, as described in WO 03/070379 A1 and WO 03/070378 A1 .

L'eau sous pression vient plaquer la plaque perforée sur un porte-joint sur lequel sont montés les joints d'étanchéité. Le porte-joint peut être extrait facilement par un côté de l'injecteur lorsqu'il n'y a plus de pression. Le remplacement éventuel d'un joint torique peut s'effectuer à l'extérieur de l'injecteur, et donc sans difficulté.Pressurized water comes to press the perforated plate on a seal holder on which are mounted the seals. The seal holder can be easily removed from one side of the injector when there is no pressure. The possible replacement of an O-ring can be done outside the injector, and therefore without difficulty.

Mais, en raison de l'épaisseur du porte-joint de 6 à 8 mm, la distance entre la plaque perforée et le voile de non-tissé à consolider se trouve augmentée, ce qui est défavorable pour le processus. L'énergie disponible du jet d'eau est d'autant plus réduite que le point d'impact du jet sur le voile de fibres est éloigné de la plaque perforée, et le porte-joint est difficile à réaliser.But, because of the thickness of the seal holder from 6 to 8 mm, the distance between the perforated plate and the nonwoven web to be consolidated is increased, which is unfavorable for the process. The available energy of the water jet is reduced as the point of impact of the jet on the fiber web is removed from the perforated plate, and the seal carrier is difficult to achieve.

C'est pourquoi on a proposé, au US 6 012 654 , un outillage spécifique pour changer le joint torique assurant l'étanchéité de la plaque perforée. L'eau sous pression vient plaquer la plaque perforée contre le mors dans lequel la gorge de joint est intégrée directement. Dans cette solution, le remplacement éventuel du joint torique est plus délicat, car le joint est complètement emprisonné à l'intérieur de l'injecteur. Sa mise en place nécessite des moyens particuliers si l'on ne veut pas avoir à démonter le mors de l'injecteur pour changer le joint. Mais le changement du joint demande deux heures.That is why it was proposed US 6,012,654 , specific tooling to change the O-ring sealing the perforated plate. Pressurized water comes press the perforated plate against the jaw in which the seal groove is directly integrated. In this solution, the possible replacement of the O-ring is more difficult because the seal is completely trapped inside the injector. Its implementation requires special means if one does not want to have to disassemble the jaw of the injector to change the seal. But the change of the joint requires two hours.

L'invention vise à écourter très sensiblement la durée du changement du joint tout en utilisant moins de pièces que dans le US 6 012 654 .The invention aims to greatly shorten the duration of the seal change while using fewer parts than in the US 6,012,654 .

L'invention a donc pour objet un outil de mise en place d'un joint dans une gorge. L'outil comprend un patin ayant une face supérieure plane et lisse de glissement et une face inférieure sur laquelle sont ménagée, successivement suivant le sens longitudinal de glissement du patin, une rampe s'éloignant de la face supérieure au fur et à mesure qu'elle se rapproche d'une plateforme, plane et lisse, formant la surface la plus basse de la face inférieure, la plateforme étant suivie d'un toc d'entraînement.The invention therefore relates to a tool for placing a seal in a groove. The tool comprises a shoe having a planar and smooth sliding surface and a lower face on which are arranged, successively in the longitudinal direction of sliding of the shoe, a ramp away from the upper face as and when it approaches a platform, flat and smooth, forming the lower surface of the lower face, the platform being followed by a training toc.

De préférence, l'outil comprend un moyen d'indication du sens d'introduction du patin, par exemple une simple flèche apposée sur le patin.Preferably, the tool comprises means for indicating the direction of introduction of the pad, for example a simple arrow affixed to the pad.

Pour mettre en place un joint élastique sans fin, notamment un joint torique, à l'aide d'un outil suivant l'invention dans un dispositif de projection de jet d'eau comprenant notamment un corps et un mors délimitant un tunnel, dont la section transversale est juste supérieure à la plus grande section transversale de l'outil (c'est aussi la section au point le plus bas (le plus haut à la figure 3) de la rampe), qui débouche à l'extérieur à une extrémité par au moins une première lumière pouvant être fermée et dans le bas duquel est ménagée une fente de sortie entourée d'une gorge sans fin de réception du joint, l'une au moins et, de préférence, les deux parties courbes de la gorge étant dites ouvertes et le périmètre du joint étant, à l'état relâché, plus petit que celui de la gorge, on peut effectuer successivement les opérations suivantes :

  • On retient un tronçon courbé du joint sur le toc ;
  • on met deux brins issus du tronçon courbé sur la rampe,
  • tout en tirant à la main sur les deux brins pour les étirer, on introduit l'outil par la première lumière et en faisant glisser la surface supérieure de l'outil sous le plafond du tunnel de sorte que les deux brins, repoussés vers le bas par la plateforme, pénètrent dans la gorge au fur et à mesure de l'avance de l'outil,
  • on fait sortir l'outil du tunnel par la seconde lumière,
  • on libère le joint du toc, le tronçon courbé du joint revenant ainsi par retour élastique dans la partie courbe ouverte de la gorge proche de la seconde lumière, et
  • on fait sortir l'outil du tunnel par l'une des lumières, de préférence, par la première lumière.
To set up an endless elastic seal, in particular an O-ring, using a tool according to the invention in a water jet projection device comprising in particular a body and a jaw delimiting a tunnel, the cross section is just greater than the largest cross section of the tool (this is also the section at the lowest point (the highest at the figure 3 ) of the ramp), which opens out at one end by at least a first closable lumen and at the bottom of which is formed an outlet slot surrounded by an endless groove for receiving the seal, one at least and, preferably, the two curved portions of the groove being said to be open and the perimeter of the seal being, in the relaxed state, smaller than that of the groove, the following operations may be carried out successively:
  • A curved section of the joint is retained on the toc;
  • we put two strands coming from the curved section on the ramp,
  • while pulling the two strands by hand to stretch them, the tool is introduced through the first light and sliding the upper surface of the tool under the tunnel ceiling so that the two strands are pushed back downwards. by the platform, enter the throat as the tool progresses,
  • the tool is taken out of the tunnel by the second light,
  • the joint of the toc is released, the curved section of the joint thus returning by springback in the open curved portion of the groove near the second lumen, and
  • the tool is pulled out of the tunnel by one of the lights, preferably by the first light.

Alors qu'au brevet US 6 012 654 , l'outillage était constitué de deux pièces, l'outil suivant l'invention ne comporte qu'une pièce. Le changement de joint dans le cas du système antérieur demandait deux heures. Suivant l'invention, on peut changer un joint en cinq minutes. Le changement de joint dans le système antérieur nécessitait une mise en place du joint sur l'outillage, une introduction de l'outillage et du joint dans l'injecteur, une introduction de la plaque perforée pour plaquer le joint dans la gorge, tandis que, suivant l'invention, le joint est mis sur l'outil alors même que l'outil est introduit dans l'injecteur et c'est l'outil lui-même, par son mouvement et sa conformation, qui met le joint en place dans la gorge, sans nécessiter de pièce complémentaire d'abaissement du joint ni l'introduction de la plaque perforée pour plaquer le joint dans la gorge.Whereas in the patent US 6,012,654 the tooling consisted of two pieces, the tool according to the invention comprises only one piece. The change of joint in the case of the previous system required two hours. According to the invention, a seal can be changed in five minutes. The change of seal in the previous system necessitated a setting of the seal on the tool, an introduction of the tool and the seal into the injector, an introduction of the perforated plate to press the seal in the groove, while according to the invention, the seal is put on the tool even when the tool is introduced into the injector and it is the tool itself, by its movement and its conformation, which puts the seal in place in the throat, without the need for additional part lowering the seal or the introduction of the perforated plate to press the seal into the groove.

Le toc peut être constitué par un simple plot autour duquel est passée la partie courbe du joint, le plot ne se trouvant de préférence que dans la partie médiane, suivant la largeur, de la face inférieure.The toc can be constituted by a simple pad around which is passed the curved portion of the seal, the pad being preferably located only in the middle portion, along the width, of the lower face.

Pour faciliter l'usinage, il vaut mieux que la rampe ne se trouve que dans les parties latérales, suivant la largeur, de la face inférieure, sous la forme donc de deux sous-rampes, de part et d'autre d'une barrette centrale de renforcement. On obtient de bons résultats lorsque la rampe a une longueur, suivant le sens longitudinal, de 25 à 100 mm.To facilitate the machining, it is better that the ramp is located only in the lateral parts, according to the width, of the lower face, in the form of two sub-ramps, on either side of a bar strengthening center. Good results are obtained when the ramp has a length, in the longitudinal direction, of 25 to 100 mm.

De préférence, la rampe a une largeur comprise entre 10 et 30 mm, et la plus grande distance entre la face supérieure et la face inférieure est comprise entre 5 et 20 mm.Preferably, the ramp has a width of between 10 and 30 mm, and the greatest distance between the upper face and the lower face is between 5 and 20 mm.

L'outil peut être en un matériau métallique ou en une matière plastique.The tool may be made of a metallic material or a plastic material.

L'outil a, de préférence, une largeur comprise entre 10 et 30 mm.The tool preferably has a width of between 10 and 30 mm.

L'angle des rampes peut être compris entre 5° et 45°, et notamment être compris entre 10 et 20°, le mieux étant qu'il soit de 15°.The angle of the ramps can be between 5 ° and 45 °, and in particular be between 10 and 20 °, the best being that it is 15 °.

La plateforme a une longueur considérée suivant le sens longitudinal de l'outil d'environ 20 à 70 mm.The platform has a length considered in the longitudinal direction of the tool of about 20 to 70 mm.

L'invention a aussi pour objet un ensemble constitué d'un dispositif de projection de jet d'eau à gorge de réception d'un joint et d'un outil de mise en place du joint suivant l'invention.The subject of the invention is also an assembly consisting of a water jet projection device with a groove for receiving a seal and a tool for placing the seal according to the invention.

Le dispositif de projection de jet d'eau comprend notamment un corps et un mors résistant à la pression et délimitant une chambre intérieure ayant une entrée et communiquant avec interposition d'une plaque perforée avec une fente de sortie débouchant à l'extérieur du mors ou de l'injecteur, une gorge sans fin usinée dans le mors en entourant la fente de sortie et ayant deux parties opposées délimitées chacune par un bord intérieur et un bord extérieur, et deux parties courbes d'extrémité dont l'une au moins est délimitée seulement par un bord intérieur, et une première lumière sur une première face frontale du mors, de dimension telle qu'un outil de mise en place d'un joint dans la gorge puisse être introduit dans le mors et en être retiré, et de préférence une deuxième lumière sur une deuxième face frontale du mors de même dimension que la première lumière.The water jet projection device comprises in particular a body and a jaw resistant to pressure and delimiting an inner chamber having an inlet and communicating with the interposition of a perforated plate with an exit slot opening out of the jaw or of the injector, an endless groove machined in the jaw surrounding the exit slot and having two opposing portions each delimited by an inner edge and an outer edge, and two end curved portions of which at least one is delimited only by an inner edge, and a first light on a first face front of the jaw, such that a tool for placing a seal in the groove can be introduced into the jaw and be removed, and preferably a second light on a second end face of the jaw of the same size as the first light.

De préférence, la largeur d'entrée de la gorge est inférieure au diamètre du joint, à l'état relâché, le périmètre du joint est inférieur à celui de la gorge, le joint étant donc monté étiré dans la gorge, et le bord extérieur de la gorge de joint est inclinée vers la fente de sortie pour que le joint puisse s'accrocher facilement.Preferably, the inlet width of the groove is less than the diameter of the seal, in the relaxed state, the perimeter of the seal is smaller than that of the groove, the seal being thus mounted stretched in the groove, and the outer edge the seal groove is inclined towards the exit slot so that the seal can catch easily.

Les lumières sont, en fonctionnement, bouchées par des bouchons.The lights are, in operation, blocked by plugs.

Aux dessins annexés, donnés uniquement à titre d'exemple :

  • la Figure 1 est une vue en coupe d'un injecteur avec lequel l'outil de mise en place suivant l'invention est destiné à former un ensemble ;
  • la Figure 2 est une vue en perspective partielle avec enlèvement de la partie supérieure du corps de l'extrémité du tunnel par lequel l'outil n'est pas introduit ;
  • la Figure 3 est une vue en perspective de l'outil suivant l'invention, mais alors que sa face inférieure est, par souci de meilleure représentation, dirigée vers le haut ;
  • la Figure 4 est une vue en coupe partielle illustrant la position de l'outil 19 dans le tunnel.
In the accompanying drawings, given solely by way of example:
  • the Figure 1 is a sectional view of an injector with which the placing tool according to the invention is intended to form an assembly;
  • the Figure 2 is a partial perspective view with removal of the upper body from the end of the tunnel through which the tool is not introduced;
  • the Figure 3 is a perspective view of the tool according to the invention, but while its lower face is, for the sake of better representation, directed upwards;
  • the Figure 4 is a partial sectional view illustrating the position of the tool 19 in the tunnel.

La Figure 5 est une vue semblable à la figure 3 d'une variante.The Figure 5 is a view similar to the figure 3 of a variant.

L'injecteur représenté à la Figure 1 comprend corps 1 auquel est vissé un mors 2, l'ensemble constituant l'injecteur en acier inoxydable qui résiste à la pression. Le corps délimite une chambre 3 intérieure ayant une entrée et communiquant par une fente 4, avec interposition d'une plaque perforée qui n'est pas représentée au dessin, avec une fente 5 de sortie débouchant à l'extérieur du mors ou de l'injecteur.The injector shown in Figure 1 comprises body 1 to which is screwed a jaw 2, the assembly constituting the injector Stainless steel that withstands the pressure. The body delimits an inner chamber 3 having an inlet and communicating through a slot 4, with the interposition of a perforated plate which is not shown in the drawing, with an exit slot 5 opening out of the jaw or the injector.

Une gorge 6 sans fin est usinée dans le mors 2, en entourant la fente 5 de sortie. Dans cette gorge doit être monté un joint 7 torique élastique en matière élastomère. Comme le montre la Figure 2, la gorge 6 a deux parties 8, 9 opposées rectilignes délimitées chacune par un bord 10, 11 intérieur et par un bord 12, 13 extérieur, et deux parties (une seule est représentée) courbes 14 d'extrémité qui ne sont toutes deux délimitées que par un bord intérieur. Dans ces parties courbes d'extrémité, la gorge est dite ouverte. Une partie d'un joint qui tombe dans la plage ainsi délimitée aura toute facilité à venir s'appliquer sur le bord 14 par retour élastique si le joint est au préalable étiré.An endless groove 6 is machined in the jaw 2, surrounding the exit slot 5. In this groove must be mounted an elastic ring 7 of elastomeric material. As shown in Figure 2 , the groove 6 has two parts 8, 9 opposite rectilinear each delimited by an edge 10, 11 inside and an edge 12, 13 outside, and two parts (only one is shown) curves 14 end which are both delimited only by an inner edge. In these curved end portions, the groove is said to be open. Part of a seal that falls into the range thus defined will be easily applied to the edge 14 by springback if the seal is previously stretched.

On voit, à la Figure 2, qu'une seconde lumière 15 est ménagée sur une seconde face frontale du mors 2. Elle a des dimensions telles qu'un outil de mise en place d'un joint dans la gorge peut y passer. Une première lumière 15 de même dimension se trouve à l'autre bout du tunnel 16 délimité par ces lumières 15, par une face 17 du corps 1 et par la face inférieure 18 dans laquelle est usinée la gorge 6.We see, at the Figure 2 , a second light 15 is formed on a second end face of the jaw 2. It has dimensions such that a tool for placing a seal in the groove can pass. A first light 15 of the same size is at the other end of the tunnel 16 delimited by these slots 15, by a face 17 of the body 1 and by the lower face 18 in which the groove 6 is machined.

La section transversale des lumières 15 et donc celle du tunnel est juste supérieure au rectangle délimité par les dimensions hors tout de l'outil de mise en place représenté à la Figure 3.The cross section of the lights 15 and therefore that of the tunnel is just greater than the rectangle delimited by the overall dimensions of the positioning tool shown in FIG. Figure 3 .

Cet outil, en un matériau qui glisse facilement sur de l'inox, est constitué d'un patin ayant une face 20 supérieure, rectangulaire, plane et lisse. La face latérale de gauche, à la Figure 3, de l'outil est en forme de T ayant une hampe 21 et une barrette 22. La barrette 22 est rectangulaire, en ayant une largeur de 20 mm et une hauteur de 10 mm. La hampe 21 est sensiblement carrée, en ayant un côté de 10 mm. La hauteur de l'outil H est de 20 mm. La face inférieure (supérieure à la figure) de la hampe 21 est plane et parallèle à la face 20.This tool, made of a material that slides easily on stainless steel, consists of a pad having an upper face, rectangular, flat and smooth. The left side, at the Figure 3 , the tool is T-shaped having a shaft 21 and a bar 22. The bar 22 is rectangular, having a width of 20 mm and a height of 10 mm. The The shaft 21 is substantially square, having a side of 10 mm. The height of the tool H is 20 mm. The lower face (greater than the figure) of the shaft 21 is flat and parallel to the face 20.

Deux rampes 25 symétriques l'une de l'autre par rapport à l'axe longitudinal de l'outil sont disposées sur les bords longitudinaux de l'outil. Les rampes 25 sont inclinées vers le bas suivant une fente de 15°de la surface supérieure 20 de l'outil à une plateforme 26 qui est au niveau le plus bas de l'outil.Two ramps 25 symmetrical to each other with respect to the longitudinal axis of the tool are arranged on the longitudinal edges of the tool. The ramps 25 are inclined downwardly in a 15 ° slot from the top surface 20 of the tool to a platform 26 which is at the lowest level of the tool.

De l'autre côté que les rampes 25 la plateforme 26 se poursuit par un toc 24 d'entraînement, qui s'étend en hauteur de la partie la plus basse de l'outil, donc au même niveau que la partie la plus basse de la plateforme 26 vers le haut sur une hauteur moindre que celle de la plateforme de manière à dégager vers le haut, une rainure 23 ouverte vers le haut (vers le bas à la figure). Le toc 24 d'entraînement ne se trouve que dans la partie médiane, suivant la largeur de la face inférieure de l'outil. Un joint peut être mis dans cette rainure 23 et ainsi enfilé sur le toc 24 d'entraînement, la face intérieure du joint venant en contact avec la paroi verticale de droite de la plateforme 26.On the other side of the ramps 25, the platform 26 continues with a driving tip 24, which extends in height from the lowest part of the tool, therefore at the same level as the lowest part of the the platform 26 upwards to a height less than that of the platform so as to disengage upwards, a groove 23 open upwards (downwards in the figure). The driving tip 24 is located only in the middle part, depending on the width of the underside of the tool. A seal can be placed in this groove 23 and thus threaded onto the driving tip 24, the inner face of the seal coming into contact with the vertical right wall of the platform 26.

On utilise l'outil de mise en place d'un joint dans la gorge 6 de la manière suivante :

  • on met un tronçon courbé d'un nouveau joint 7 à mettre dans la gorge 6 dans la rainure 23 en l'appuyant sur le bord le plus à droite à la figure 3, de la plateforme 26 et sur le toc 24 d'entraînement. On met deux brins issus du tronçon courbé sur les rampes 25. Tout en tirant à la main sur les deux brins pour les étirer, on introduit l'outil par la première lumière en faisant glisser la face supérieure de l'outil sous le plafond du tunnel de sorte que les deux brins pénètrent dans la gorge 6 au fur et à mesure de l'avancé de l'outil. On fait sortir l'outil du tunnel par la seconde lumière. On libère à la main le joint de la rainure 23, le tronçon courbé du joint revenant ainsi par retour élastique dans la partie courbe ouverte de la gorge proche de la seconde lumière. On fait sortir l'outil du tunnel par l'une des lumières.
The tool for placing a seal in the groove 6 is used as follows:
  • a curved section of a new gasket 7 is placed in the groove 6 in the groove 23 by pressing it on the rightmost edge at the figure 3 , platform 26 and on the 24cc drive. Two strands coming from the curved section are placed on the ramps 25. While pulling the two strands by hand to stretch them, the tool is introduced by the first light by sliding the upper face of the tool under the ceiling of the tunnel so that the two strands enter the groove 6 as the advanced tool. The tool is taken out of the tunnel by the second light. The seal is released by hand from the groove 23, the curved section of the seal thus returning by elastic return in the open curved portion of the groove near the second lumen. The tool is pulled out of the tunnel by one of the lights.

A la figure 5, le toc 24 d'entraînement constitue l'extrémité avant de l'outil sans délimiter de rainure 23.To the figure 5 the drive dog 24 constitutes the front end of the tool without delimiting a groove 23.

De ce fait, lorsque la partie avant de l'outil arrivera côté transmission et que le toc 24 d'entraînement passera au-dessus de la gorge ouverte, le joint aura tendance à tomber moyennant un léger mouvement de va-et-vient de l'outil réalisé par l'opérateur.As a result, when the front portion of the tool arrives on the transmission side and the drive dog 24 passes over the open groove, the seal will tend to fall with a slight back and forth movement of the transmission. tool made by the operator.

Claims (11)

  1. Tool for positioning a seal in a groove (6), characterised in that it comprises a sliding block having a planar and smooth upper sliding face (20) and a lower face on which there are arranged, successively in the longitudinal sliding direction of the sliding block, an inclined portion (25) which moves away from the upper face as it moves towards a planar and smooth platform (26), which forms the lowest surface of the lower face, the platform being followed by a driving dog (24).
  2. Tool according to claim 1, characterised in that it comprises a means (F) for indicating the introduction direction of the sliding block.
  3. Tool according to claim 1 or claim 2, characterised in that the dog is located only in the central portion, over the width, of the lower face.
  4. Tool according to any one of the preceding claims, characterised in that the inclined portion is located only in the lateral portions, over the width, of the lower face.
  5. Tool according to any one of the preceding claims, characterised in that the inclined portion has a length, in the longitudinal direction, of from 25 to 100 mm.
  6. Tool according to any one of the preceding claims, characterised in that the inclined portion has a width of from 10 to 30 mm and an inclination of between 5 and 45°.
  7. Tool according to any one of the preceding claims, characterised in that the greatest distance between the upper face and the lower face is between 5 and 20 mm.
  8. Tool according to any one of the preceding claims, characterised in that the platform has a length, taken in the longitudinal direction of the tool, of approximately from 20 to 70 mm.
  9. Tool according to any one of claims 1 to 8, characterised in that the dog constitutes the front end of the tool.
  10. Method for positioning a continuous resilient seal (7) using a tool according to the preceding claims in a device for projecting a water jet comprising a body (1) and a jaw (2) which delimit a tunnel (16) whose cross-section is slightly greater than the largest cross-section of the tool, which opens at the outer side at an end via a first aperture (15) which can be closed and at the bottom of which there is arranged a discharge aperture (5) which is surrounded by a groove (6) for receiving the seal (7), at least one and preferably the two curved portion(s) (14) of the groove (6) being open and the seal (7) being shorter than the groove (6), characterised in that successively:
    - a curved portion of the seal (7) is retained on the dog (24),
    - two strands from the curved portion are placed on the inclined portion (25),
    - whilst pulling the two strands by hand in order to draw them, the tool is introduced via the first aperture (15) and by sliding the upper surface (20) of the tool under the ceiling of the tunnel so that the two strands are introduced into the groove (6) as the tool moves forward,
    - the tool is removed from the tunnel via the second aperture (15),
    - the seal (7) is released from the dog (24), the curved portion of the seal thus returning by means of resilient return into the open curved portion (14) of the groove close to the second aperture (15), and
    - the tool is removed from the tunnel (16) via one of the apertures, preferably via the first aperture (15).
  11. Assembly comprising a device for projecting water jets having a groove for receiving a seal and a tool for positioning the seal, characterised in that the tool is as defined in claims 1 to 9.
EP07788818A 2006-06-13 2007-05-31 Platform tool for installing a seal in a groove in particular for device for projecting water jets Active EP2032315B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0605233A FR2902036B1 (en) 2006-06-13 2006-06-13 PLATFORM TOOL FOR PLACING A JOINT IN A THRUST, IN PARTICULAR FOR A DEVICE
PCT/FR2007/000903 WO2007144480A1 (en) 2006-06-13 2007-05-31 Platform tool for installing a seal in a groove in particular for device for projecting water jets

Publications (2)

Publication Number Publication Date
EP2032315A1 EP2032315A1 (en) 2009-03-11
EP2032315B1 true EP2032315B1 (en) 2009-10-07

Family

ID=37709606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07788818A Active EP2032315B1 (en) 2006-06-13 2007-05-31 Platform tool for installing a seal in a groove in particular for device for projecting water jets

Country Status (5)

Country Link
EP (1) EP2032315B1 (en)
AT (1) ATE444836T1 (en)
DE (1) DE602007002715D1 (en)
FR (1) FR2902036B1 (en)
WO (1) WO2007144480A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3030705A1 (en) * 2014-12-17 2016-06-24 Andritz Perfojet Sas INSTALLATION FOR DRYING A WET NON-WOVEN NET

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606672U1 (en) * 1996-04-12 1996-08-08 Heinrich Pulm GmbH, 50735 Köln Device for pulling a profile strip into a parting line
US6012209A (en) * 1997-08-08 2000-01-11 Aeroquip Corporation Face seal O-ring insertion tool
DE19745661A1 (en) * 1997-10-17 1999-04-22 Fleissner Maschf Gmbh Co Nozzle bar on a device for generating liquid jets
FR2836074B1 (en) * 2002-02-19 2004-12-24 Rieter Perfojet WATER JET PROJECTION DEVICE WITH REMOVABLE JOINT HOLDER

Also Published As

Publication number Publication date
ATE444836T1 (en) 2009-10-15
WO2007144480A1 (en) 2007-12-21
FR2902036A1 (en) 2007-12-14
DE602007002715D1 (en) 2009-11-19
EP2032315A1 (en) 2009-03-11
FR2902036B1 (en) 2008-08-08

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