EP4108597B1 - Cartouches coaxiales permettant de stocker et d'exprimer le contenu sans force de retour d'une matière coulante à plusieurs composants - Google Patents

Cartouches coaxiales permettant de stocker et d'exprimer le contenu sans force de retour d'une matière coulante à plusieurs composants Download PDF

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Publication number
EP4108597B1
EP4108597B1 EP21181303.5A EP21181303A EP4108597B1 EP 4108597 B1 EP4108597 B1 EP 4108597B1 EP 21181303 A EP21181303 A EP 21181303A EP 4108597 B1 EP4108597 B1 EP 4108597B1
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EP
European Patent Office
Prior art keywords
cartridge
wall
coaxial
chamber
support structure
Prior art date
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Application number
EP21181303.5A
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German (de)
English (en)
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EP4108597A1 (fr
Inventor
Michael Wiedemann
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Hilti AG
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Hilti AG
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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
    • 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

Definitions

  • the invention relates to a coaxial cartridge which is designed to receive and store a first and a second component of a flowable multi-component mass in separate coaxial chambers and to be inserted into a support structure for squeezing the mass out of the cartridge.
  • Various cartridge concepts are known in the prior art in order to hold at least two components of flowable masses in separate chambers, which can be dispensed using a squeezing device.
  • the multi-component compound can be, for example, a sealing or fastening compound such as mortar, adhesive and much more.
  • the pressure in the outer chamber of the cartridge is relieved after an interrupted squeezing process either by the component contained therein flowing out through the cartridge outlet or by relieving the outer piston arranged in this chamber.
  • the annular outer piston will move back in accordance with the volume of any annular gap between the support structure and the cartridge outer wall, into which the outer wall had deformed elastically during the squeezing process.
  • a suitable support structure should be used, which can prevent deformation of the outer wall of the cartridge during the squeezing process.
  • This support structure must fit tightly to the cartridge in order to limit the possible pump volume to a minimum. It is also important to ensure that the support structure is sufficiently rigid in order to avoid pumping due to the deformation of the support structure itself.
  • the same diameters prevent the cartridge from being easily inserted or removed into/from the support structure.
  • a coaxial cartridge for storing a flowable multi-component mass and for inserting it into a support structure for squeezing the mass out of the cartridge.
  • the multi-component mass comprises at least a first component and a second component, which are stored separately from one another in the cartridge and are only to be mixed with one another when they are discharged from the cartridge.
  • This can in particular be a sealing or fastening compound such as mortar, adhesive and the like.
  • the cartridge comprises a hollow cylindrical inner wall and a hollow cylindrical outer wall arranged coaxially (ie with the same cylinder axis) around it, so that the cartridge has an inner chamber delimited radially by the inner wall Receiving the first component of the multi-component mass and an outer chamber arranged radially between the inner wall and the outer wall for receiving the second component of the multi-component mass.
  • the cartridge On one of its end faces, the cartridge also has a cartridge cover which delimits the inner chamber and the outer chamber in the axial direction and thereby has a discharge opening for the first component in the area of the inner chamber and a discharge opening for the second component in the area of the outer chamber.
  • the cartridge lid can in particular be firmly connected to the inner and outer walls of the cartridge. For this purpose, for example, it can be designed in one piece at least with the inner wall.
  • the cartridge comprises an inner piston which closes the inner chamber at the rear (i.e. towards the other end face of the cartridge) and is axially movable therein, and an outer piston which also closes the outer chamber at the rear and is axially movable.
  • the inner wall of the cartridge is dimensionally stable, in particular thick-walled, so that it radially supports both the inner piston and the outer piston and thereby guides their axial movement and maintains the cylindrical shape of the cartridge.
  • the outer wall of the cartridge is firmly connected to the outer bulb on the one hand and to the cartridge cover on the other.
  • the outer wall is designed to be deformable, in particular thin-walled, in such a way that when the multi-component mass is pressed out of the cartridge by the axial displacement of the outer piston towards the cartridge cover, it is largely inelastic (in other words, free of restoring forces, i.e. without the creation of restoring forces ) folds up and/or plastically deforms.
  • the wall thicknesses of the inner wall and the outer wall must be selected to be suitable for the functionality described here depending on the circumstances of the specific application - such as the material and the dimensions of the cartridge.
  • One idea of the invention is therefore to create a coaxial cartridge which has a thin-walled outer wall which can be deformed during the intended squeezing process without the creation of elastic restoring forces. Through this The disturbing pumping behavior described above in the outer wall of the cartridge can be significantly reduced or even completely prevented in a support structure. Another advantage of a thin external wall is the resulting material savings.
  • a thin, deformable outer wall of the cartridge without restoring force allows the outer wall to be placed against the support structure even at very low pressures in the cartridge during the squeezing process, whereby the disruptive restoring behavior of the outer wall (pumps) is significantly reduced.
  • the inner wall of the cartridge remains largely dimensionally stable and guides the inner piston and the outer piston.
  • the mentioned thinness of the outer wall can, in the best case, be as thick as a film. This will cause immediate plastic deformation when the cartridge is pressed and thus completely prevent subsequent pumping if the squeezing process is interrupted.
  • the attachment of the outer wall to the outer bulb and to the cartridge cover can, for example, be in their outer edge area. However, external fastening is not mandatory.
  • the outer wall, especially if it is designed as a film, can also be attached inside. Injecting the film into the lid or annular piston (i.e. outer piston) is also possible and can be advantageous depending on the specific circumstances of an application.
  • the hollow cylindrical inner wall and the hollow cylindrical outer wall each have a circular cross section.
  • this is not absolutely necessary for the functional principle set out here, so that in principle other cross-sectional shapes, such as elliptical or rectangular, can also be implemented just as well.
  • the inner wall and/or the outer wall of the cartridge are made of plastic with correspondingly different wall thicknesses.
  • the entire cartridge can be made of plastic, with its individual components being made of the same or different types of plastic.
  • other materials can in principle also be used, such as metal for dimensionally stable components or metal foil or fabric or textile etc. for the inelastically deformable outer wall.
  • the outer wall of the cartridge can be formed by a film, for example a plastic film. The film can be welded to the outer bulb on the one hand and to the cartridge cover on the other hand and thereby attached thereto.
  • the cartridge lid has a connecting piece on its side facing away from the inner and outer chambers, into which the discharge openings of the inner and outer chambers open and which is used to connect a mixer for mixing the first and second components of the multi-component mass Squeezing process is formed. This allows the various components to be mixed particularly effectively during the pressing process to form the multi-component mass that is ultimately dispensed.
  • a system for storing and dispensing a flowable multi-component mass comprises, on the one hand, a coaxial cartridge of the type set out herein and, on the other hand, a support structure with an internally at least partially cylindrical receptacle, the shape and size of which are dimensioned for inserting and holding the cartridge for squeezing out the multi-component mass therefrom.
  • the space mentioned between the inside of the receptacle of the support structure and the outside of the cartridge inserted therein can in particular be a cylindrical annular gap and/or one or more radial and/or axial grooves predetermined shape and size.
  • the grooves are formed on the inside of the receptacle of the support structure.
  • the system further comprises the mixer already mentioned above, which is designed to be connected to a connecting piece of the cartridge lid and to mix the first and second components of the multi-component mass during the squeezing process.
  • Figure 1 shows a schematic longitudinal section of an example of a system 1 of the type set out here, in which a coaxial cartridge 2 is inserted into a hollow cylindrical receptacle of a support structure 3 for squeezing out the multi-component mass contained therein.
  • the coaxial cartridge 2 is made of plastic. The same can also apply to the support structure 3.
  • the cartridge 2 comprises a hollow cylindrical inner wall 4 and a hollow cylindrical outer wall 5 arranged around it with a common cylinder axis A, whereby an inner chamber 6 delimited radially by the inner wall 4 and an outer chamber 7 arranged radially between the inner wall 4 and the outer wall 5 are formed.
  • a first component of the multi-component mass to be dispensed is accommodated in the inner chamber 6, while a second component of the multi-component mass is accommodated in the outer chamber 7.
  • the cartridge 2 includes a cartridge lid 8, which contains the in Fig. 1
  • the two dispensing openings open into a connecting piece 9 of the cartridge cover 8, which is designed to connect (e.g. by attaching or screwing on) a mixer (not shown) for mixing the first and second components of the multi-component mass during the squeezing process.
  • the cartridge 2 comprises an inner piston 10 which closes the rear of the inner chamber 6 and can be moved axially therein, and a Outer chamber 7 closing and axially movable outer piston 11, through its axial movement in Fig. 1 to the right the multi-component mass can be pressed out of the cartridge 2 through the dispensing openings of the cartridge lid 8.
  • the inner wall 4 is designed to be so thick-walled and therefore dimensionally stable that it radially supports and thereby guides the inner piston 10 and the outer piston 11, while the outer wall 5 is attached to the outer piston 11 and to the cartridge cover 8 and is designed to be thin-walled so that it passes through the movement of the outer piston 11 to the cartridge lid 8 when squeezing out the mass without restoring force in the gap 12 remaining between the outer wall 5 and the inside of the receptacle of the support structure 3 folds and / or plastically deforms.
  • the thin outer wall 5 of the cartridge 2 allows the cartridge 2 to be placed against the support structure 3 even at very low pressures and, due to the inelastic folding, significantly or completely reduces the resilience behavior of the outer wall 5 (pumps). Another advantage is the resulting material savings.
  • the thinness of the outer wall 5 can in the best case range up to the thickness of a film, as in Fig. 1 indicated schematically. This will cause an immediate plastic deformation when the cartridge 2 is pressed on and thus completely avoid subsequent pumping.
  • the film is connected directly to the inner piston 10 running on the inner wall 4 of the cartridge 2 and to the cartridge cover 8, each by welding.
  • the film folds, for example, as in the already known film containers within the support structure 3.
  • the inner wall 4 of the cartridge 2 remains standing and guides the inner piston 10 and the outer piston 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (10)

  1. Cartouche (2) coaxiale permettant de stocker une matière à plusieurs composants fluide et destinée à être insérée dans une structure de support (3) pour l'extraction par pressage de la matière hors de la cartouche (2), comprenant :
    - une paroi intérieure (4) cylindrique creuse et une paroi extérieure (5) cylindrique creuse disposée de manière coaxiale autour de celle-ci, de sorte que la cartouche (2) présente une chambre intérieure (6) délimitée radialement par la paroi intérieure (4) pour la réception d'un premier composant et une chambre extérieure (7) disposée radialement entre la paroi intérieure (4) et la paroi extérieure (5) pour la réception d'un second composant de la matière à plusieurs composants ;
    - un couvercle de cartouche (8) qui ferme fermement les chambres intérieure et extérieure (6, 7) sur un côté frontal de la cartouche (2) et présente respectivement une ouverture de distribution par chambre ; et
    - un piston intérieur (10) fermant la chambre intérieure (6) côté arrière et pouvant être déplacé axialement dans celle-ci et un piston extérieur (11) fermant la chambre extérieure (7) côté arrière et pouvant être déplacé axialement ;
    - dans laquelle la paroi intérieure (4) est de forme stable, en particulier à paroi épaisse, de telle sorte qu'elle supporte radialement le piston intérieur et le piston extérieur (10, 11) et les guide ainsi,
    caractérisée en ce que la paroi extérieure (5) est fixée au piston extérieur (11) et au couvercle de cartouche (8) et est déformable, en particulier à paroi mince, de telle sorte que, par le déplacement du piston extérieur (11) vers le couvercle de cartouche (8) lors de l'extraction par pressage de la matière, elle se plie et/ou se déforme plastiquement sans force de rappel.
  2. Cartouche (2) coaxiale selon la revendication 1, dans laquelle
    - la paroi intérieure (4) cylindrique creuse et la paroi extérieure (5) cylindrique creuse possèdent respectivement une section transversale circulaire.
  3. Cartouche (2) coaxiale selon la revendication 1 ou 2, dans laquelle
    - au moins la paroi intérieure (4) et/ou la paroi extérieure (5) de la cartouche (2) sont réalisées en matière plastique avec des épaisseurs de paroi correspondantes différentes.
  4. Cartouche (2) coaxiale selon l'une des revendications précédentes, dans laquelle la paroi extérieure (5) de la cartouche (2) est formée par un film.
  5. Cartouche (2) coaxiale selon la revendication 4, dans laquelle
    - le film est soudé d'un côté au piston extérieur (11) et de l'autre côté au couvercle de cartouche (8) et est ainsi fixé à ceux-ci.
  6. Cartouche (2) coaxiale selon l'une des revendications précédentes, dans laquelle
    - le couvercle de cartouche (8) présente, sur son côté opposé à la chambre intérieure et à la chambre extérieure (6, 7), une tubulure de raccordement (9) dans laquelle débouchent les ouvertures de distribution de la chambre intérieure et de la chambre extérieure (6, 7) et laquelle est réalisée pour être raccordée à un mélangeur permettant de mélanger le premier et le second composant de la matière à plusieurs composants lors du processus d'extraction par pressage.
  7. Système (1) permettant de stocker et de distribuer une matière à plusieurs composants fluide, comprenant :
    - une cartouche (2) coaxiale selon l'une des revendications précédentes ; et
    - une structure de support (3) comportant un logement intérieur cylindrique au moins dans certaines sections, dont la forme et la taille sont dimensionnées pour l'insertion et le maintien de la cartouche (2) coaxiale pour l'extraction par pressage de la matière à plusieurs composants hors de celle-ci,
    - dans lequel, entre le côté intérieur du logement de la structure de support (3) et la paroi extérieure (5) de la cartouche (2) insérée dans celui-ci, il reste un espace intermédiaire (12) permettant de recevoir la paroi extérieure (5) de la cartouche (2) se pliant et/ou se déformant plastiquement lors de l'extraction par pressage de la matière hors de la cartouche (2).
  8. Système (1) selon la revendication 7, dans lequel
    - l'espace intermédiaire (12) comprend une fente annulaire cylindrique et/ou une ou plusieurs rainures radiales et/ou axiales de forme et de taille prédéterminées.
  9. Système (1) selon la revendication 7 ou 8, comprenant en outre
    - un mélangeur, lequel est réalisé pour être raccordé à une tubulure de raccordement (9) du couvercle de cartouche (8) et pour mélanger le premier et le second composant de la matière à plusieurs composants lors du processus d'extraction par pressage.
  10. Procédé permettant d'extraire par pressage une masse à plusieurs composants fluide hors de la cartouche (2) coaxiale d'un système (1) selon l'une des revendications 7 à 9, comprenant les étapes suivantes :
    - insertion de la cartouche (2) dans le logement de la structure de support (3) prévu à cet effet ; et
    - extraction par pressage du premier composant hors de la chambre intérieure (6) et du second composant hors de la chambre extérieure (7) par un déplacement axial simultané du piston intérieur (10) et du piston extérieur (11) vers le couvercle de cartouche (8) ;
    - dans lequel, lors dudit déplacement, la paroi extérieure (5) de la cartouche (2) épouse le côté intérieur du logement de la structure de support (3) et se plie et/ou se déforme plastiquement dans l'espace intermédiaire (12) prévu à cet effet.
EP21181303.5A 2021-06-24 2021-06-24 Cartouches coaxiales permettant de stocker et d'exprimer le contenu sans force de retour d'une matière coulante à plusieurs composants Active EP4108597B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21181303.5A EP4108597B1 (fr) 2021-06-24 2021-06-24 Cartouches coaxiales permettant de stocker et d'exprimer le contenu sans force de retour d'une matière coulante à plusieurs composants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21181303.5A EP4108597B1 (fr) 2021-06-24 2021-06-24 Cartouches coaxiales permettant de stocker et d'exprimer le contenu sans force de retour d'une matière coulante à plusieurs composants

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EP4108597A1 EP4108597A1 (fr) 2022-12-28
EP4108597B1 true EP4108597B1 (fr) 2023-11-29

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EP21181303.5A Active EP4108597B1 (fr) 2021-06-24 2021-06-24 Cartouches coaxiales permettant de stocker et d'exprimer le contenu sans force de retour d'une matière coulante à plusieurs composants

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU664374B2 (en) * 1991-07-15 1995-11-16 James Owen Camm Dispenser
US20060144854A1 (en) * 2004-12-30 2006-07-06 Plas-Pak Industries, Inc. Cartridge delivery system utilizing film bags
EP2768620B1 (fr) * 2011-10-17 2018-01-17 Sulzer Mixpac AG Cartouche et cartouche à plusieurs composants

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