EP0301974B1 - Cartridge for injecting a mixture of two liquid components - Google Patents

Cartridge for injecting a mixture of two liquid components Download PDF

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Publication number
EP0301974B1
EP0301974B1 EP88401979A EP88401979A EP0301974B1 EP 0301974 B1 EP0301974 B1 EP 0301974B1 EP 88401979 A EP88401979 A EP 88401979A EP 88401979 A EP88401979 A EP 88401979A EP 0301974 B1 EP0301974 B1 EP 0301974B1
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EP
European Patent Office
Prior art keywords
mixing chamber
cartridge
compartment
pistons
constituents
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88401979A
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German (de)
French (fr)
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EP0301974A1 (en
Inventor
Jacques Morel
Didier Morel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morel Ateliers Electromecaniques De Favieres SA
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Morel Ateliers Electromecaniques De Favieres SA
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Priority to AT88401979T priority Critical patent/ATE65062T1/en
Publication of EP0301974A1 publication Critical patent/EP0301974A1/en
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Publication of EP0301974B1 publication Critical patent/EP0301974B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B05C17/00559—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components the different components being stored in coaxial chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application

Definitions

  • This cartridge is to be used with a special gun to eject the constituents which vulcanize by mixing.
  • US-A-4 366 919 the problem of the simultaneous sliding of the pistons is not resolved without resorting to this special pistol.
  • the reservoir is extended opposite the pistons by a sleeve into which the mixing chamber is screwed, the part of this chamber adjacent to the two compartments comprises a central opening capable of communicating with an orifice of the interior compartment and one or more peripheral openings capable of communicating with one or more peripheral orifices of the exterior compartment, after unscrewing the mixing chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Coating Apparatus (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Package Specialized In Special Use (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)

Description

La présente invention concerne une cartouche pour injecter le mélange de deux constituants liquides comme décrits dans la première partie de la revendication 1. Une telle cartouche est connue du US-A-4 366 919.The present invention relates to a cartridge for injecting the mixture of two liquid constituents as described in the first part of claim 1. Such a cartridge is known from US-A-4,366,919.

Plus précisément, la présente invention concerne une cartouche pour injecter dans un corps creux, un produit semi-pâteux, tel qu'une mousse de polyuréthane obtenue par le mélange de deux constituants liquides, à savoir un polyol et un isocyanate.More specifically, the present invention relates to a cartridge for injecting into a hollow body, a semi-pasty product, such as a polyurethane foam obtained by the mixture of two liquid constituents, namely a polyol and an isocyanate.

La cartouche visée par l'invention est destinée en particulier à injecter de la mousse de polyuréthane dans un manchon d'étanchéité et d'isolation électrique entourant l'épissure qui raccorde des câbles électriques ou électroniques.The cartridge targeted by the invention is intended in particular to inject polyurethane foam into a sealing and electrical insulation sleeve surrounding the splice which connects electrical or electronic cables.

On connaît selon le brevet français 2 518 450 de la demanderesse, une cartouche pour injecter dans un corps creux, un produit semi-pâteux obtenu par le mélange de deux constituants liquides, comprenant deux récipients, montés de façon coulissante, l'un dans l'autre et renfermant chacun l'un des deux constituants précités. L'un des récipients est séparé de l'autre récipient par une cloison, l'autre récipient comporte un embout de sortie destiné à être raccordé à l'orifice d'injection du corps creux, cette cloison et cet embout de sortie présentant chacun un opercule perforable par une tige perforatrice montée axialement dans la cartouche pour permettre respectivement le passage des constituants du premier récipient dans le second récipient, et le passage du mélange résultant par l'embout de sortie du second récipient. La tige comporte une partie avant lisse et une partie arrière filetée séparées par une partie intermédiaire courte et filetée, de diamètre supérieur à celui desdites parties avant et arrière. Le premier récipient comporte sur son extrémité opposée au second récipient une ouverture taraudée destinée à recevoir ladite partie intermédiaire filetée. L'extrémité libre de la partie lisse de la tige est filetée. L'embout de sortie du second récipient présente un taraudage interne destiné à recevoir le filetage ménagé sur l'extrémité de cette partie lisse. La longueur de cette partie lisse est supérieure à la distance comprise entre la cloison et le taraudage du premier récipient et la partie filetée de la tige comporte un écrou destiné à prendre appui à l'extérieur de la cartouche, sur l'extrémité du premier récipient pour pousser celui-ci dans le second récipient.According to French patent 2,518,450 of the applicant, a cartridge is known for injecting into a hollow body, a semi-pasty product obtained by the mixture of two liquid constituents, comprising two containers, mounted in a sliding manner, one in the 'other and each containing one of the two aforementioned constituents. One of the containers is separated from the other container by a partition, the other container has an outlet nozzle intended to be connected to the injection port of the hollow body, this partition and this outlet nozzle each having a perforable cover by a perforating rod mounted axially in the cartridge to allow respectively the passage of the constituents of the first container in the second container, and the passage of the resulting mixture by the outlet nozzle of the second container. The rod has a smooth front part and a threaded rear part separated by a short and threaded intermediate part, with a diameter greater than that of said front and rear parts. The first container has at its end opposite the second container a threaded opening intended to receive said threaded intermediate part. The free end of the smooth part of the rod is threaded. The outlet end of the second container has an internal thread intended to receive the thread formed on the end of this smooth part. The length of this smooth part is greater than the distance between the partition and the thread of the first container and the threaded part of the rod has a nut intended to bear on the outside of the cartridge, on the end of the first container to push it into the second container.

Les inconvénients de la cartouche connue précitée résident dans le fait qu'elle ne permet pas d'obtenir un mélange parfait des deux constituants et qu'elle peut conduire à des résultats médiocres lorsqu'elle n'est pas utilisée correctement.The drawbacks of the aforementioned known cartridge lie in the fact that it does not make it possible to obtain a perfect mixture of the two constituents and that it can lead to poor results when it is not used correctly.

Le document US-A-4 366 919 décrit une cartouche pour injecter le mélange de deux constituants liquides comprenant un réservoir qui comporte un compartiment pour l'un des constituants et un compartiment pour l'autre constituant, et des moyens pour propulser ces deux constituants vers une chambre de mélange qui débouche à l'extérieur par une ouverture de sortie, le réservoir comprenant deux compartiments concentriques cylindriques contenant respectivement l'un et l'autre constituant, un piston étant monté de façon coulissante dans chacun des deux compartiments, les deux pistons comprennent un piston annulaire monté dans le compartiment extérieur de section annulaire complémentaire, ce piston annulaire entourant le second piston qui est monté dans le compartiment intérieur cylindrique, ledit compartiment intérieur étant entouré par le compartiment extérieur.Document US-A-4 366 919 describes a cartridge for injecting the mixture of two liquid constituents comprising a reservoir which has a compartment for one of the constituents and a compartment for the other constituent, and means for propelling these two constituents towards a mixing chamber which opens to the outside via an outlet opening, the reservoir comprising two concentric cylindrical compartments respectively containing one and the other component, a piston being slidably mounted in each of the two compartments, both pistons comprise an annular piston mounted in the outer compartment of complementary annular section, this annular piston surrounding the second piston which is mounted in the cylindrical inner compartment, said inner compartment being surrounded by the outer compartment.

Cette cartouche est à utiliser avec un pistolet spécial pour éjecter les constituants qui se vulcanisent en se mélangeant. Dans ce document US-A-4 366 919, le problème du coulissement simultané des pistons n'est pas résolu sans recourir à ce pistolet spécial.This cartridge is to be used with a special gun to eject the constituents which vulcanize by mixing. In this document US-A-4 366 919, the problem of the simultaneous sliding of the pistons is not resolved without resorting to this special pistol.

Le but de la présente invention est de remédier aux inconvénients des réalisations précitées en proposant une cartouche d'injection permettant d'obtenir un parfait mélange des deux constituants et dont le fonctionnement et l'utilisation sont à la fois simples, faciles, sûrs et fiables.The object of the present invention is to remedy the drawbacks of the abovementioned embodiments by proposing an injection cartridge making it possible to obtain a perfect mixture of the two constituents and the operation and use of which are at the same time simple, easy, safe and reliable. .

La cartouche visée par l'invention pour injecter le mélange de deux constituants liquides comprend un réservoir qui comporte un compartiment pour l'un des constituants et un compartiment pour l'autre constituant, et des moyens pour propulser ces deux constituants vers une chambre de mélange qui débouche à l'extérieur par une ouverture de sortie.The cartridge targeted by the invention for injecting the mixture of two liquid constituents comprises a reservoir which has a compartment for one of the constituents and a compartment for the other constituent, and means for propelling these two constituents towards a mixing chamber which opens to the outside through an exit opening.

Le réservoir comprend deux compartiments concentriques cylindriques contenant respectivement l'un et l'autre constituant, un piston étant monté de façon coulissante dans chacun des deux compartiments, les deux pistons comprennent un piston annulaire monté dans le compartiment extérieur de section annulaire complémentaire, ce piston annulaire entourant le second piston qui est monté dans le compartiment intérieur cylindrique qui est entouré par le compartiment extérieur, ces deux pistons étant reliés ensemble de façon à ce qu'on puisse les faire coulisser simultanément.The reservoir comprises two concentric cylindrical compartments respectively containing one and the other constituent, a piston being slidably mounted in each of the two compartments, the two pistons include an annular piston mounted in the outer compartment of complementary annular section, this piston annular surrounding the second piston which is mounted in the inner cylindrical compartment which is surrounded by the outer compartment, these two pistons being connected together so that they can be made to slide simultaneously.

Suivant l'invention, cette cartouche est caractérisée en ce que le piston annulaire est porté par un tube de diamètre supérieur au diamètre du compartiment intérieur, en ce que le second piston est porté par un tube de diamètre inférieur au diamètre du compartiment intérieur, en ce que les extrémités de ces deux tubes, opposées aux pistons sont reliées ensemble, en ce qu'à l'intérieur du tube portant le second piston est montée une vis qui est vissée dans un écrou solidaire des deux extrémités des tubes opposées aux pistons, en ce que cette vis comprend un organe susceptible de venir en appui contre une butée située au-delà de l'écrou, cette butée étant solidaire d'un corps qui est relié à l'extrémité du réservoir qui est adjacente au piston annulaire, des moyens étant prévus pour faire coulisser simultanément les deux pistons, en ce que chacun des compartiments débouche dans une chambre de mélange commune qui comprend des cloisons définissant un trajet sinueux du mélange des deux constituants entre les deux compartiments et l'ouverture de sortie de la chambre de mélange.According to the invention, this cartridge is characterized in that the annular piston is carried by a tube with a diameter greater than the diameter of the compartment inside, in that the second piston is carried by a tube with a diameter smaller than the diameter of the interior compartment, in that the ends of these two tubes, opposite the pistons are connected together, in that inside the bearing tube the second piston is mounted a screw which is screwed into a nut integral with the two ends of the tubes opposite to the pistons, in that this screw comprises a member capable of coming to bear against a stop located beyond the nut, this stop being integral with a body which is connected to the end of the reservoir which is adjacent to the annular piston, means being provided for sliding the two pistons simultaneously, in that each of the compartments opens into a common mixing chamber which comprises partitions defining a sinuous path of the mixture of the two constituents between the two compartments and the outlet opening of the mixing chamber.

Lors de l'utilisation, les deux pistons en coulissant dans les deux compartiments propulsent simultanément les deux constituants dans la chambre de mélange. Du fait que ces deux constituants emprunter dans la chambre de mélange des trajets sinueux définis par des cloisons déviatrices, ces deux constituants débouchent à la sortie de la chambre sous la forme d'un mélange parfaitement homogène.In use, the two pistons sliding in the two compartments simultaneously propel the two constituents into the mixing chamber. Due to the fact that these two constituents take sinuous paths defined in the mixing chamber defined by deflecting partitions, these two constituents open at the exit of the chamber in the form of a perfectly homogeneous mixture.

Dans une réalisation avantageuse de l'invention, le réservoir est prolongé à l'opposé des pistons par un manchon dans lequel est vissée la chambre de mélange, la partie de cette chambre adjacente aux deux compartiments comprend une ouverture centrale susceptible de communiquer avec un orifice du compartiment intérieur et une ou plusieurs ouvertures périphériques susceptibles de communiquer avec un ou plusieurs orifices périphériques du compartiment extérieur, après dévissage de la chambre de mélange.In an advantageous embodiment of the invention, the reservoir is extended opposite the pistons by a sleeve into which the mixing chamber is screwed, the part of this chamber adjacent to the two compartments comprises a central opening capable of communicating with an orifice of the interior compartment and one or more peripheral openings capable of communicating with one or more peripheral orifices of the exterior compartment, after unscrewing the mixing chamber.

Il suffit donc de devisser la chambre de mélange pour permettre aux deux constituants provenant du réservoir de pénétrer dans cette chambre où ces deux constituants sont mélangés automatiquement avant d'être expulsés à l'extérieur.So just unscrew the mixing chamber to allow the two constituents from the tank to enter this chamber where these two constituents are mixed automatically before being expelled outside.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will appear in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs:

  • la figure 1 est une vue en plan de la cartouche conforme à l'invention;
  • la figure 2 est une vue en coupe longitudinale de la cartouche;
  • la figure 3 est une vue à plus grande échelle, en coupe longitudinale de l'extrémité de la cartouche qui présente la chambre de mélange;
  • la figure 4 est une vue analogue à la figure 3, montrant la chambre de mélange en position dévissée de fonctionnement;
  • la figure 5 est une vue en bout de la cartouche, son capuchon d'extrémité et sa chambre de mélange étant enlevés;
  • la figure 6 est une vue en plan d'un disque de la chambre de mélange;
  • la figure 7 est une vue en plan d'un autre disque de la chambre de mélange.
In the appended drawings, given by way of nonlimiting examples:
  • Figure 1 is a plan view of the cartridge according to the invention;
  • Figure 2 is a longitudinal sectional view of the cartridge;
  • Figure 3 is an enlarged view, in longitudinal section of the end of the cartridge which has the mixing chamber;
  • Figure 4 is a view similar to Figure 3 showing the mixing chamber in the unscrewed operating position;
  • Figure 5 is an end view of the cartridge with its end cap and mixing chamber removed;
  • Figure 6 is a plan view of a disc of the mixing chamber;
  • Figure 7 is a plan view of another disc of the mixing chamber.

Dans la réalisation des figures 1 et 2, la cartouche entièrement réalisée en matière plastique, pour injecter dans un corps creux le mélange de deux constituants liquides comprend un réservoir 1 qui comporte un compartiment 2 pour l'un des constituants et un compartiment 3 pour l'autre constituant et des moyens qui seront détaillés plus loin, pour propulser ces deux constituants vers une chambre de mélange 4 qui débouche à l'extérieur par une ouverture de sortie 5. Le réservoir 1 comprend deux compartiments 2, 3 concentriques cylindriques contenant respectivement l'un et l'autre constituant. Un piston 6, 7 est monté de façon coulissante dans chacun des deux compartiments 2, 3. Des moyens sont prévus pour faire coulisser simultanément les deux pistons 6, 7. Chacun des compartiments 2, 3 débouche dans la chambre de mélange commune 4. Cette dernière comprend une série de cloisons telles que 8, 9 définissant un trajet sineux du mélange des deux constituants entre les deux compartiments 2, 3 et l'ouverture de sortie 5 de la chambre de mélange 4.In the embodiment of Figures 1 and 2, the cartridge made entirely of plastic, for injecting into a hollow body the mixture of two liquid constituents comprises a reservoir 1 which has a compartment 2 for one of the constituents and a compartment 3 for the other component and means which will be detailed below, to propel these two components to a mixing chamber 4 which opens to the outside via an outlet opening 5. The tank 1 comprises two concentric cylindrical compartments 2, 3 containing respectively l 'and the other constituent. A piston 6, 7 is slidably mounted in each of the two compartments 2, 3. Means are provided for simultaneously sliding the two pistons 6, 7. Each of the compartments 2, 3 opens into the common mixing chamber 4. The latter comprises a series of partitions such as 8, 9 defining a path winding of the mixture of the two constituents between the two compartments 2, 3 and the outlet opening 5 of the mixing chamber 4.

Les deux pistons comprennent un piston annulaire 7 monté dans le compartiment extérieur 3 de section annulaire complémentaire. Ce piston annulaire 7 entoure le second piston 6 qui est monté dans le compartiment intérieur cylindrique 2 qui est lui-même entouré par le compartiment extérieur 3. Ces deux pistons 6, 7 sont reliés ensemble de façon à ce qu'on puisse les faire coulisser simultanément.The two pistons include an annular piston 7 mounted in the outer compartment 3 of complementary annular section. This annular piston 7 surrounds the second piston 6 which is mounted in the internal cylindrical compartment 2 which is itself surrounded by the external compartment 3. These two pistons 6, 7 are connected together so that they can be made to slide simultaneously.

Le piston annulaire 7 muni de joints d'étanchéité 10, 11 est porté par un tube 12 de diamètre supérieur au diamètre du compartiment intérieur 2. Le second piston 6 muni d'un joint d'étanchéité 13 est porté par un tube 14 de diamètre inférieur au diamètre du compartiment intérieur 2. Les extrémités 12a, 14a, de ces deux tubes 12, 14, opposées aux pistons 6, 7 sont reliées ensemble par un manchon 15.The annular piston 7 provided with seals 10, 11 is carried by a tube 12 of diameter greater than the diameter of the interior compartment 2. The second piston 6 provided with a seal 13 is carried by a tube 14 of diameter smaller than the diameter of the interior compartment 2. The ends 12a, 14a, of these two tubes 12, 14, opposite the pistons 6, 7 are connected together by a sleeve 15.

A l'intérieur du tube 14 portant le second piston 6 est montée une vis 16 qui est vissée dans un écrou 17. solidaire des deux extrémités 12a, 14a des tubes 12, 14. Cette vis 16 comprend un organe 18 susceptible de venir en appui contre une butée 19 située au-delà de l'écrou 17. Cette butée 19 est solidaire d'un corps 20 qui est relié à l'extrémité 1a du réservoir 1 qui est adjacente au piston annulaire 7.Inside the tube 14 carrying the second piston 6 is mounted a screw 16 which is screwed into a nut 17. secured to the two ends 12a, 14a of the tubes 12, 14. This screw 16 comprises a member 18 capable of coming to bear against a stop 19 located beyond the nut 17. This stop 19 is integral with a body 20 which is connected to the end 1a of the reservoir 1 which is adjacent to the annular piston 7.

On soit sur la figure 1 que le corps 20 entoure et recouvre de façon étanche, les tubes 12, 14 des pistons 7, 6 et la vis 16.FIG. 1 shows that the body 20 surrounds and covers in a leaktight manner, the tubes 12, 14 of the pistons 7, 6 and the screw 16.

Par ailleurs, le corps 20 comprend sur son extrémité 20a opposée au réservoir 1, un évidement 21 dans lequel fait saillie un embout 16a de la vis 16 destiné à recevoir un organe tel qu'une clef d'entraînement en rotation de cette vis.Furthermore, the body 20 comprises at its end 20a opposite the reservoir 1, a recess 21 in which protrudes an end piece 16a of the screw 16 intended to receive a member such as a drive key in rotation of this screw.

D'autre part, le réservoir 1 est prolongé à l'opposé des pistons 6, 7 par un manchon 22 (voir également les figures 3 et 4) dans lequel est vissée la chambre de mélange 4. La partie 23 de cette chambre 4 adjacente aux deux compartiments 2, 3 comprend une ouverture centrale 24 susceptible de communiquer avec un orifice 31 du compartiment intérieur 2 et plusieurs ouvertures périphériques 26 susceptibles de communiquer avec un ou plusieurs orifices périphériques 27 du compartiment extérieur 3, après dévissage de la chambre de mélange (voir figures 4 et 5). La partie 23 de la chambre de mélange 4 comprend (voir figure 3) un épaulement 25 compris entre deux joints qui ferme de façon étanche les orifices 27 du compartiment extérieur, lorsque la chambre de mélange 4 est vissée à fond dans le manchon 22.On the other hand, the reservoir 1 is extended opposite the pistons 6, 7 by a sleeve 22 (see also Figures 3 and 4) into which the mixing chamber 4 is screwed. The part 23 of this adjacent chamber 4 to the two compartments 2, 3 comprises a central opening 24 capable of communicating with an orifice 31 of the internal compartment 2 and several peripheral openings 26 capable of communicating with one or more peripheral orifices 27 of the external compartment 3, after unscrewing the mixing chamber ( see Figures 4 and 5). The part 23 of the mixing chamber 4 comprises (see FIG. 3) a shoulder 25 between two seals which sealingly seal the orifices 27 in the external compartment, when the mixing chamber 4 is screwed fully into the sleeve 22.

Par ailleurs, la partie 23 de la chambre de mélange 4 comprend une cavité 28 dont le fond présente une ouverture 24 communiquant avec l'intérieur de la chambre et dans laquelle est logée une soupape 29 prenant appui sous l'action d'un ressort 30 contre un orifice 31 du fond du compartiment central 2.Furthermore, the part 23 of the mixing chamber 4 comprises a cavity 28 whose bottom has an opening 24 communicating with the interior of the chamber and in which is housed a valve 29 supported by the action of a spring 30 against an orifice 31 in the bottom of the central compartment 2.

La force d'appui de la soupape 29 contre l'orifice 31 et la section de celui-ci sont déterminées de façon que lorsque les pistons 6, 7 sont poussés vers la chambre de mélange 4 le débit du passage du constituant par l'orifice 31 soit proportionnel au débit du passage de l'autre constituant par les orifices périphériques 27, compte tenu du mélange désiré de ces deux constituants.The bearing force of the valve 29 against the orifice 31 and the section thereof are determined so that when the pistons 6, 7 are pushed towards the mixing chamber 4 the flow rate of the passage of the constituent through the orifice 31 is proportional to the flow rate of the passage of the other constituent through the peripheral orifices 27, taking into account the desired mixture of these two constituents.

On voit également sur les figures 3 et 4, que les cloisons telles que 8, 9 de la chambre de mélange 4 sont constituées par des disques parallèles s'étendant sur toute la dimension de la chambre 4 qui est perpendiculaire à l'axe du réservoir 1. Ces disques 8, 9 présentent alternativement une ouverture centrale 31a (voir figure 6) et une série d'ouvertures périphériques 32 (voir figure 7) de dimensions plus faibles que l'ouverture centrale 31a, ces ouvertures 31a, 32 obligeant le mélange des deux constituants à emprunter un trajet sinueux (voir flèches sur la figure 4).It can also be seen in FIGS. 3 and 4, that the partitions such as 8, 9 of the mixing chamber 4 are constituted by parallel disks extending over the entire dimension of the chamber 4 which is perpendicular to the axis of the tank 1. These discs 8, 9 alternately have a central opening 31a (see Figure 6) and a series of peripheral openings 32 (see Figure 7) of dimensions weaker than the central opening 31a, these openings 31a, 32 forcing the mixture of the two constituents to take a winding path (see arrows in FIG. 4).

Par ailleurs, chaque disque 8, 9 présente sur ses deux faces une série de nervures 33, 34 en forme d'arc de spirale s'étendant en s'espaçant progressivement entre la partie centrale des disques 8, 9 vers la périphérie de ceux-ci.Furthermore, each disc 8, 9 has on its two faces a series of ribs 33, 34 in the form of a spiral arc extending progressively apart between the central part of the discs 8, 9 towards the periphery of them. this.

On voit d'autre part sur les figures 3 et 4, que la section transversale des disques 8, 9 présente une partie plane 8a, 9a centrale prolongée de part et d'autre vers l'extérieur par deux parties 8b, 9b en forme de v.We see on the other hand in Figures 3 and 4, that the cross section of the discs 8, 9 has a planar portion 8a, 9a central extended on either side towards the outside by two parts 8b, 9b in the form of v.

La sortie 5 de la chambre de mélange 4 est ménagée dans un embout 35 pouvant être vissé dans une tubulure d'injection (non représentée). Le vissage et le dévissage de la chambre de mélange 4 par rapport au réservoir 1 est réalisé par rotation de ce dernier par rapport à la tubulure d'injection.The outlet 5 of the mixing chamber 4 is formed in a nozzle 35 which can be screwed into an injection pipe (not shown). The mixing chamber 4 is screwed and unscrewed relative to the reservoir 1 by rotation of the latter relative to the injection pipe.

Par ailleurs, le manchon 22 dans lequel est vissée la chambre de mélange 4 est fermé à son extrémité opposée au réservoir 1 par un capuchon 36 de protection de la chambre muni d'une ouverture centrale 37. Ce capuchon 36 constitue une butée pour limiter la course de dévissage de la chambre 4 (voir figure 4).Furthermore, the sleeve 22 into which the mixing chamber 4 is screwed is closed at its end opposite to the reservoir 1 by a cap 36 for protecting the chamber provided with a central opening 37. This cap 36 constitutes a stop to limit the unscrewing stroke of chamber 4 (see figure 4).

De plus, le sens du filetage sur lequel est vissée la chambre de mélange 4 est inverse de celui du filetage de la vis 16 d'actionnement des pistons 6, 7.In addition, the direction of the thread on which the mixing chamber 4 is screwed is opposite to that of the thread of the screw 16 for actuating the pistons 6, 7.

Le fonctionnement de la cartouche que l'on vient de décrire est le suivant.The operation of the cartridge which has just been described is as follows.

Lors du stockage de la cartouche, celle-ci se trouve dans la position représentée sur les figures 2 et 3. Les compartiments 2 et 3 du réservoir 1 sont fermés d'une part par les pistons 6 et 7 et d'autre part par la chambre de mélange 4 vissée à fond contre l'extrémité du reservoir 1.When the cartridge is stored, it is in the position shown in FIGS. 2 and 3. The compartments 2 and 3 of the reservoir 1 are closed on the one hand by the pistons 6 and 7 and on the other hand by the mixing chamber 4 screwed fully against the end of the reservoir 1.

Lors de la mise en oeuvre de la cartouche, il n'y a rien à couper ou à ouvrir. Il suffit de visser à fond l'embout fileté 35 de la chambre de mélange sur la tubulure d'injection fixée au corps creux que l'on veut remplir.When using the cartridge, there is nothing to cut or open. Just screw it tight the threaded end piece 35 of the mixing chamber on the injection pipe fixed to the hollow body that is to be filled.

On continue ensuite la rotation de la cartouche par rapport à la tubulure. Le filetage de pas inverse (à gauche) suivant lequel la chambre de mélange 4 est vissée dans le manchon 22 provoque le dévissage de cette chambre de mélange 4, ce qui libère les orifices et ouvertures de communication entre les compartiments 2 et 3 de la chambre de mélange 4.The rotation of the cartridge is then continued relative to the tubing. The reverse pitch thread (on the left) according to which the mixing chamber 4 is screwed into the sleeve 22 causes the unscrewing of this mixing chamber 4, which frees the orifices and openings for communication between the compartments 2 and 3 of the chamber mixing 4.

Il suffit ensuite de tourner la vis 16 en engageant sur l'embout 16a de celle-ci une clef appropriée. étant donné que le filetage de cette vis 16 est inverse de celui de la chambre de mélange 4, celle-ci ne risque pas de se visser vers le réservoir 1 lors de la rotation de la vis 16.Then simply turn the screw 16 by engaging on the endpiece 16a thereof an appropriate key. given that the thread of this screw 16 is opposite to that of the mixing chamber 4, there is no risk of the latter being screwed towards the reservoir 1 during the rotation of the screw 16.

La rotation de cette vis 16 entraîne le coulissement synchrone des pistons 6 et 7, ce qui provoque l'expulsion des deux constituants dans la chambre de mélange 4.The rotation of this screw 16 results in the synchronous sliding of the pistons 6 and 7, which causes the two constituents to be expelled into the mixing chamber 4.

En passant successivement par l'ouverture centrale 31a d'un disque 8 vers les petites ouvertures 32 du disque 9 suivant, les deux constituants décrivent un trajet sinueux, qui permet d'obtenir un mélange parfaitement homogène de ces deux constituants.Passing successively through the central opening 31a of a disc 8 towards the small openings 32 of the following disc 9, the two constituents describe a sinuous path, which makes it possible to obtain a perfectly homogeneous mixture of these two constituents.

L'obtention d'un excellent mélange résulte également du fait que les constituants s'écoulent dans une multitude de canaux délimités par les nervures 33, 34 en arc de spirale qui ont pour effet de diviser la matière.Obtaining an excellent mixture also results from the fact that the constituents flow in a multitude of channels delimited by the ribs 33, 34 in a spiral arc which have the effect of dividing the material.

Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation que l'on vient de décrire et on peut apporter à celui-ci de nombreuses modifications sans sortir du cadre de l'invention.Of course, the invention is not limited to the embodiment which has just been described and many modifications can be made to it without departing from the scope of the invention.

Ainsi, la forme et le nombre des disques 8, 9 contenus dans la chambre de mélange pourraient être différents de ceux décrits, pourvu que les constituants parcourent un trajet sinueux dans cette chambre.Thus, the shape and the number of discs 8, 9 contained in the mixing chamber could be different from those described, provided that the constituents travel a sinuous path in this chamber.

Claims (12)

1. A cartridge for injecting a mixture of two liquid constituents, comprising a reservoir (1) which has a compartment (2) for one of the constituents and a compartment (3) for the other constituent and means for propelling these two constituents toward a mixing chamber (4) which opens to the outside by way of an outlet opening (5), the two compartments (2, 3) being concentric, a piston (6, 7) being mounted in sliding manner in each of the two compartments (2, 3), the first piston (7) being an annular piston (7) mounted in the exterior compartment (3), of annular section, this annular piston (7) surrounding the second piston (6), which is mounted in the interior cylindrical compartment (2), which is surrounded by the exterior compartment, these two pistons (6, 7) being connected to one another such that it is possible to slide them simultaneously, characterized in that the annular piston (7) is carried by a tube (12) of which the diameter is greater than the diameter of the interior compartment (2), in that the second piston (6) is carried by a tube (14) of which the diameter is smaller than the diameter of the interior compartment (2), in that the ends of these two tubes (12, 14) opposite the pistons (6, 7) are connected to one another, wherein, inside the tube (14) carrying the second piston (6), there is mounted a screw (16) which is screwed into a nut (17) which is secured to the two ends (12a, 14a) of the tubes (12, 14) opposite the pistons, in that this screw (16) comprises an element (18) which is capable of bearing against a stop (19) located beyond the nut (17), this stop (19) being secured to a body (20) which is connected to the end (1a) of the reservoir (1) which is adjacent to the annular piston (7), means being provided to slide the two pistons (6, 7) simultaneously, and in that each of the compartments (2, 3) opens into a common mixing chamber (4) which comprises partitions (8, 9) defining a sinuous path of the mixture of the two constituents between the two compartments (2, 3) and the outlet opening (5) of the mixing chamber (4).
2. A cartridge as claimed in claim 1, wherein the body (20) surrounds and covers in sealed manner the tubes (12, 14) of the pistons and the screw (16).
3. A cartridge as claimed in claim 1 or 2, wherein the body (20) comprises at its end (20a) opposite the reservoir (1) a recess (21), in which there projects a joining piece (16a) of the screw (16), this joining piece (16a) being intended to receive an element for driving this screw (16) in rotation.
4. A cartridge as claimed in any of claims 1 to 3, wherein the reservoir (1) is extended opposite the pistons (6, 7) by a sleeve (22) into which the mixing chamber (4) is screwed, and wherein the part (23) of this chamber (4) adjacent to the two compartments (2, 3) comprises a central opening (24) which is capable of communicating with an orifice (31) of the interior compartment (2) and one or more peripheral openings (26) which are capable of communicating with one or more peripheral orifices (27) of the exterior compartment (3), after unscrewing the mixing chamber (4).
5. A cartridge as claimed in claim 4, wherein the said part (23) of the mixing chamber (4) comprises a shoulder (25) which closes in sealed manner the orifices (27) of the exterior compartment, when the mixing chamber (4) is screwed as far as it will go into the sleeve (22) and wherein the said part (23) of the mixing chamber (4) comprises a cavity (28) of which the base has an opening (24) communicating with the interior of the chamber (4) and in which there is mounted a valve (29) bearing, under the action of a spring (30), against the orifice (31) of the central compartment (2).
6. A cartridge as claimed in claim 5, wherein the force with which the valve (29) bears against the orifice (31) and the cross section of the latter are determined such that, when the pistons (6, 7) are pushed towards the mixing chamber (4), the rate at which the constituent passes through the orifice (31) is proportional to the rate at which the other constituent passes through the peripheral orifices (27) taking into account the desired mixture of these two constituents.
7. A cartridge as claimed in any of claims 1 to 6, wherein the partitions (8, 9) of the mixing chamber (4) are composed of parallel disks extending over the entire chamber in the dimension which is perpendicular to the axis of the reservoir (1), these disks (8, 9) alternately having a central opening (31a) and a series of peripheral openings (32) of smaller dimensions than this central opening (31a), these openings (31a), (32) compelling the mixture of the two constituents to assume a sinuous path.
8. A cartridge as claimed in claim 7, wherein each disk (8, 9) has on its two faces a series of ribs (33, 34) in the shape of a spiral arc, extending between the central part of the disk (8, 9) and the periphery of the latter and becoming progressively further apart.
9. A cartridge as claimed in claim 8, wherein the cross section of the disks (8, 9) has a central part (8a, 9a) extended on either side toward the outside by two V-shaped parts (8b, 9b).
10. A cartridge as claimed in any of claims 1 to 9, wherein the outlet (5) of the mixing chamber (4) is made in a joining piece (35) which can be engaged in an injection connection piece, screwing and unscrewing the mixing chamber (4) with respect to the reservoir (1) being carried out by rotating the latter with respect to the injection connection piece.
11. A cartridge as claimed in any of claims 4 to 10, wherein the sleeve (22) into which the mixing chamber (4) is screwed is closed at its end opposite the reservoir (1) by a cap (36), this cap (36) constituting a stop for limiting the travel when the chamber (4) is unscrewed.
12. A cartridge as claimed in any of claims 4 to 11, wherein the direction of the thread onto which the mixing chamber (4) is screwed is opposite that of the thread of the screw (16) for actuating the pistons (6, 7).
EP88401979A 1987-07-31 1988-07-29 Cartridge for injecting a mixture of two liquid components Expired - Lifetime EP0301974B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88401979T ATE65062T1 (en) 1987-07-31 1988-07-29 CARTRIDGE FOR INJECTING THE MIXTURE OF TWO LIQUID COMPONENTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8710932 1987-07-31
FR8710932A FR2618764B1 (en) 1987-07-31 1987-07-31 CARTRIDGE FOR INJECTING THE MIXTURE OF TWO LIQUID CONSTITUENTS

Publications (2)

Publication Number Publication Date
EP0301974A1 EP0301974A1 (en) 1989-02-01
EP0301974B1 true EP0301974B1 (en) 1991-07-10

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ID=9353795

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EP88401979A Expired - Lifetime EP0301974B1 (en) 1987-07-31 1988-07-29 Cartridge for injecting a mixture of two liquid components

Country Status (21)

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US (1) US4890771A (en)
EP (1) EP0301974B1 (en)
JP (1) JPH0632766B2 (en)
CN (1) CN1009449B (en)
AR (1) AR243468A1 (en)
AT (1) ATE65062T1 (en)
AU (1) AU608191B2 (en)
BR (1) BR8803802A (en)
CA (1) CA1315749C (en)
DE (2) DE301974T1 (en)
ES (1) ES2007588B3 (en)
FR (1) FR2618764B1 (en)
IE (1) IE61421B1 (en)
IL (1) IL87225A (en)
IN (1) IN168244B (en)
MA (1) MA21341A1 (en)
MC (1) MC1950A1 (en)
MX (1) MX170493B (en)
OA (1) OA08897A (en)
PT (1) PT88152B (en)
TN (1) TNSN88078A1 (en)

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WO1997047378A1 (en) * 1996-06-11 1997-12-18 Smithkline Beecham Consumer Healthcare Gmbh Mixing and dispensing device
US5984519A (en) * 1996-12-26 1999-11-16 Genus Corporation Fine particle producing devices
US5887977A (en) * 1997-09-30 1999-03-30 Uniflows Co., Ltd. Stationary in-line mixer
JP4509783B2 (en) * 2002-08-28 2010-07-21 株式会社東海 Substance atomization equipment
US20060273109A1 (en) * 2003-08-21 2006-12-07 Mixpac Systems Ag Device and method for transferring, mixing and delivering components
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HRP20030802A2 (en) * 2003-10-03 2005-04-30 Vrus-Pervan Iris Precise hair colouring implement to form frosted and streaky hair and the method for protecting uncoloured hair
DE102005041961B4 (en) * 2005-09-03 2007-08-02 Kettenbach Gmbh & Co. Kg cartridge
CN102513267A (en) * 2011-12-27 2012-06-27 江苏东禾电声配件有限公司 Double glue mixing pneumatic glue applying gun
US9180252B2 (en) * 2012-04-20 2015-11-10 Bayer Medical Care Inc. Bellows syringe fluid delivery system
EP2873465A1 (en) * 2013-11-18 2015-05-20 Sulzer Mixpac AG Piston for delivering a fluid component from a cartridge.
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Also Published As

Publication number Publication date
AU1975488A (en) 1989-02-02
DE301974T1 (en) 1989-08-03
MX170493B (en) 1993-08-26
CN1031207A (en) 1989-02-22
JPH0632766B2 (en) 1994-05-02
IE61421B1 (en) 1994-11-02
DE3863605D1 (en) 1991-08-14
IL87225A0 (en) 1988-12-30
BR8803802A (en) 1989-02-21
CA1315749C (en) 1993-04-06
FR2618764A1 (en) 1989-02-03
AR243468A1 (en) 1993-08-31
ES2007588A4 (en) 1989-07-01
IL87225A (en) 1991-11-21
AU608191B2 (en) 1991-03-21
EP0301974A1 (en) 1989-02-01
MA21341A1 (en) 1989-04-01
ATE65062T1 (en) 1991-07-15
CN1009449B (en) 1990-09-05
PT88152B (en) 1993-09-30
OA08897A (en) 1989-10-31
TNSN88078A1 (en) 1990-07-10
MC1950A1 (en) 1989-06-30
US4890771A (en) 1990-01-02
IE882280L (en) 1989-01-31
ES2007588B3 (en) 1992-02-01
IN168244B (en) 1991-02-23
JPH01111473A (en) 1989-04-28
PT88152A (en) 1989-06-30
FR2618764B1 (en) 1990-03-23

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