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EP0942787A1 - Dispositif pour stocker, exprimer et doser des compositions a deux composants - Google Patents

Dispositif pour stocker, exprimer et doser des compositions a deux composants

Info

Publication number
EP0942787A1
EP0942787A1 EP98954317A EP98954317A EP0942787A1 EP 0942787 A1 EP0942787 A1 EP 0942787A1 EP 98954317 A EP98954317 A EP 98954317A EP 98954317 A EP98954317 A EP 98954317A EP 0942787 A1 EP0942787 A1 EP 0942787A1
Authority
EP
European Patent Office
Prior art keywords
chamber
components
tube
piston
chambers
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.)
Granted
Application number
EP98954317A
Other languages
German (de)
English (en)
Other versions
EP0942787B1 (fr
Inventor
Michael Hirthammer
Frank Lubczyk
Michael Stege
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.)
Henkel Teroson GmbH
Original Assignee
Henkel Teroson GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henkel Teroson GmbH filed Critical Henkel Teroson GmbH
Publication of EP0942787A1 publication Critical patent/EP0942787A1/fr
Application granted granted Critical
Publication of EP0942787B1 publication Critical patent/EP0942787B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B05C17/00503—Details of the outlet element
    • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
    • B05C17/00513—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container of the thread type
    • 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
    • B05C17/00503—Details of the outlet element
    • B05C17/00516—Shape or geometry of the outlet orifice or the outlet element
    • 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

Definitions

  • the invention relates to a device for storing, pressing out and dosing two-component products in a predetermined mixing ratio by pressing the components with the aid of a piston-cylinder arrangement and, if necessary, merging the components in a mixer, the two piston-cylinder arrangements being arranged axially one behind the other.
  • These devices are used for mixing two liquid or flowable components, in particular resin and hardener of two-component adhesives and / or sealants. Because of the desired reaction between the two components, mixing can only take place shortly before use. In order to achieve the optimal hardening and strength properties of the adhesives / sealants, these have to be dosed and mixed in a predetermined quantity ratio.
  • liquid to gel or pasty strands of the two components are squeezed out and mixed manually with one another in order to meter and set a specific mixing ratio of tubes or cylindrical containers (so-called cartridges).
  • This method has the disadvantage of very imprecise metering and adjustment of the mixing ratio of the two components.
  • GB-A-2086248 describes an apparatus for mixing and squeezing multi-component compositions, in which the mixing chamber is located within the storage container.
  • the storage container contains two separate chambers arranged next to one another for receiving the two reactive components. In doing so the two reactive components are pressed out of the storage chambers with the help of two movable pistons into the mixing chamber, at the top of which there is an application nozzle with a material outlet opening.
  • This device has the disadvantage that it requires application devices specially developed for this purpose for the synchronous propulsion of the squeezing pistons.
  • GB-A-2246127 describes a two-chamber cartridge for storing and applying two-component reactive materials which harden after the two components have been mixed.
  • This cartridge consists of an outer cylindrical container that receives one component and a coaxial inner chamber that contains the second reactive component.
  • the wall material of the inner chamber is designed to fold along the longitudinal axis when pressure is applied to one end of this chamber.
  • the other end of this inner chamber has a sealable outlet which, after unsealing, communicates with the outer chamber so that the two components are mixed in the outer chamber.
  • a mixing device and a material outlet opening for extruding the mixture are provided in this area of the outer chamber.
  • the other end of the outer chamber has a disc-shaped movable piston as a closure. When pressure acts on this disk-shaped piston, the material is pressed out of the outer chamber to the material outlet opening, at the same time this piston presses on the foldable wall of the inner chamber.
  • Such concentric cartridges are of complex construction and very difficult to infect.
  • DE-A-4202591 describes a method for premixing at least two pasty masses by introducing them into a mixer, in which the mass strands fed to the mixer form thin, adjacent layers.
  • DE-C-2927584 describes a device for dosing two-component products in a predetermined mixing ratio with the aid of a piston-cylinder arrangement, in which two cylinders are arranged axially one behind the other. With the help of a special arrangement, the two pistons located between the two chambers can be displaced in opposite directions at the same time, the component coming from the rear chamber through a component line leading centrally through the pistons and the front chamber the front end is guided, on which a mixing device is attached. Furthermore, coaxial cartridges with a static mixer are known, such as those under the
  • EP-A-624403 describes a device for the simultaneous application and mixing of two liquid products such as chemically reacting resins from two axially arranged chambers.
  • the two chambers have a concentric hollow tube inside and each have a piston which is axially displaceable in the chambers and is also displaceable with respect to the hollow inner tubes.
  • the rear chamber is telescopically moved within the front chamber, the two pistons being moved synchronously through the chambers.
  • the material flow from the rear chamber is conveyed through the central material feed pipe inside the front chamber to the front end, where the two material flows meet and are mixed.
  • a mandrel which is rigidly connected to the piston in the rear chamber, projects into the central material delivery pipe in the front chamber and moves synchronously with the pistons when emptying. Since the rear chamber is to telescope into the front chamber, it must be adapted to the front chamber with very tight tolerances. Such a device consists of many moving individual parts, which must be very precise and therefore require complex production. In addition, the filling process requires complex work processes.
  • the object was therefore to provide a device for pressing and dosing two-component products in a predetermined mixing ratio, which consists of a few easy-to-manufacture components. Furthermore, the device should be able to be filled with the individual reactive components in simple operations. The squeezing of the two components should be possible with standard cartridge pistols, in addition, the device should not contain any rotating parts for metering and mixing the component.
  • the outer dimensions of the chambers of the device according to the invention are selected such that the entire device fits into a standard cartridge pistol, so that the components can be pressed out with the aid of this standard cartridge pistol.
  • the outer diameter of the rear chamber is adapted to the inner diameter of the cartridge gun, but the outer diameter of the front chamber is smaller than that of the rear chamber.
  • This configuration also enables the components to be pressed out with the aid of a standard cartridge gun, but the volumes of the two components to be mixed can deviate very greatly from the ratio 1: 1.
  • the outer diameter of the front chamber in this embodiment depends on the volume required for the component that is to be dosed from the front chamber in relation to the volume of the component that is to be dosed from the rear chamber.
  • a mixing device for mixing the components can be placed on the removal opening of the device; this is preferably a static mixer.
  • the preferred application of the double-cartridge device is the storage, metering and mixing of two-component reactive adhesives in predetermined mixing ratios.
  • a flowable color component from one of the two chambers can be admixed, which simplifies storage for the user, since he only has to store a single adhesive / sealant in a base color (e.g. colorless or white pigmented) and the color component is his Can adapt to needs, for example in vehicle construction the paint used for the vehicle.
  • the catalyst, crosslinking agent and / or reactive component can also be combined with the color component in a single paste.
  • the basic adhesive / sealant component it is also possible for the basic adhesive / sealant component to be a one-component adhesive / sealant to which a color component which does not react with the reactive system is admixed.
  • the device according to the invention can also be used to apply foamable materials.
  • foamable materials there may be a polyurethane composition with reactive isocyanate groups in one chamber and a blowing agent and / or a water-containing paste in the other chamber.
  • foamable compositions are used, for example, in vehicle construction to foam cavities (so-called pillar fillers).
  • the device according to the invention offers the following advantages over the known prior art:
  • Standard application devices can be used for dispensing, dosing and mixing the components. eg use standard cartridge pistols, • The predetermined volumes of the two components to be mixed can be varied within wide limits despite the use of standard application devices.
  • the two chambers can be filled in a very simple manner, the same filling devices can also be used here as are used for the filling of standard cartridges,
  • the device consists of a few easy to manufacture and easy to assemble components.
  • FIG. 1 shows schematically an embodiment of the device according to the invention according to claim 1;
  • FIG. 2 shows a partial view at point 14 from FIG. 1
  • FIG. 3 shows a detailed view at point 15 in FIG. 1
  • FIG. 4 is a detailed view of the front part of the front chamber with the
  • FIG. 5 shows a detailed view of the piston 7
  • FIG. 6 shows a detailed view from the rear area of the rear chamber
  • Figure 7 shows another embodiment of the rear region of the rear chamber.
  • FIG. 1 shows an embodiment of the device according to the invention for pressing and dosing two-component products, in particular adhesives and sealants.
  • the front cylindrical container 1 serves to receive the one flowable component 11.
  • a tube 3 which has an opening 5 at its front end.
  • the rear end of the front chamber 1 is closed by a disk-shaped piston 7 which can be moved in the axial direction in the direction of the arrow labeled A.
  • the rear chamber 2 is used for Receiving the second flowable component 12.
  • a tube 4 In the center of this chamber is a tube 4, the inner diameter of which is designed so that the tube 4 can be telescopically moved over the tube 3 of the front chamber.
  • the front part of the tube 4 is designed as a plate-shaped flange 13, so that the piston 7 of the front chamber is moved synchronously with the forward movement of the tube 4.
  • the rear end of the tube 4 has a material opening 6.
  • the rear end of the rear chamber 2 is closed by an axially displaceable piston 8.
  • This piston 8 sits directly on the end of the tube 4.
  • both the piston 8 and the piston 7 move in the direction of the arrow A because of the mechanical coupling.
  • the tube 4 moves telescopically over the tube 3.
  • This ejection pressure promotes the component 12 through the material opening 6 into the interior of the tube 4, whereby this component is conveyed through the interior of the two tubes 4 and 3 in the direction of the removal opening 9 of the double cartridge.
  • the component 11 is conveyed out of the chamber 1 through the material opening 5 of the front pipe 3 in the direction of the removal opening 9 by the forward movement of the piston 7.
  • the two components can be applied in a type of coextrusion without further mixing directly at the end of the removal opening through a simple nozzle.
  • a mixing device 10 can be attached to the removal opening 9, which brings about an intensive mixing of the two flowable components 11 and 12.
  • This mixing device can preferably be a static mixer.
  • FIG. 2 shows a detailed view of the transition area between the two chambers 1 and 2 at point 14 in FIG. 1.
  • the front end of the wall 22 of the rear chamber 2 has a gradation on the outer edge such that the rear end the wall 21 of the front chamber 1 is seated on this gradation and thus causes exact centering and fixing of the two chambers 1 and 2.
  • FIG. 3 shows a detailed view 15 from FIG. 1. The central area of the front end of the rear chamber 2 is shown here.
  • a seal 35 is provided between the front wall 32 of the rear chamber 2 and the wall 34 of the rear tube 4, which is firmly connected to the wall 32.
  • This seal is intended to prevent the component 12 from escaping through the space between the rear tube 4 and the front opening of the chamber 2 and still enable the tube 4 to move axially.
  • This seal 35 can either be designed as an O-ring. If the chamber 2 consists of an injection molded plastic part, however, the seal 35 can also be a lip-like projection and thus an integral part of the rear chamber 2.
  • FIG. 4 shows a detailed view of the front area of the front chamber 1.
  • the front wall 41 corresponds with its opening to a standard cartridge in such a way that the front part of the wall 41 has a short tubular connecting piece 42 in the area of the removal opening, which has a External thread is provided.
  • the union nut 46 has a corresponding internal thread.
  • the wall 43 of the front tube 3 has a widening 49 in the front area.
  • the nozzle 47 placed on the front cartridge has a flange-like widening 48, as is customary with such nozzle tips for cartridges Flange 48 of the nozzle tip 47 rigidly fixed together. This ensures that when the ejection pressure acts on the rear piston 8, the front tube 3 remains unchanged in its bearing in the front cartridge.
  • the widening 49 can also have a sealing lip (not shown here) or an O-ring in order to prevent material from escaping through the space between the widening 49 and the wall 41.
  • a further possibility for increasing the tightness against material leakage consists in a conical design of the widening 49, the rear end of this widening then having a larger diameter than the front end. This embodiment is not shown in the drawings.
  • FIG. 5 shows a detailed view from the area of the disk-shaped piston 7 of the front cartridge chamber 1.
  • Tube 4 at the front end.
  • Piston-fixed O-rings can be formed, but they can also be lip-shaped
  • Embodiment is particularly useful when the piston 7 is injection molded from a thermoplastic. Each is shown schematically
  • FIGS. 6 and 7 show detailed views from the area of the rear piston 8.
  • the rear tube 4 is seated directly on the piston 8.
  • the piston 8 may have one or more sealing lips 65 on the outer region, which may be designed analogously to the sealing lips 35 and 55 mentioned above.
  • FIGS. 6 and 7, with the material outlet openings 66 and 76, represent two possible configurations of the rear end of the tube 4 These material outlet openings 66 and 76 are detailed designs of the material outlet opening 6 according to FIG.
  • the cross sections of the material outlet openings 5, 6, 66 and 76 can be varied within wide limits.
  • the upper limits are naturally given by the diameter of the pipes 3 and 4, otherwise the cross sections depend on the viscosity of the flowable components to be pressed and metered and on the maximum possible squeezing pressure.
  • the pistons 7 and 8 In order to ensure that the two cartridge chambers 1 and 2 are largely completely emptied, the pistons 7 and 8 have to cover the same distances in the axial direction until they are completely emptied. If the volumes of the components 11 and 12 to be metered are to differ from the ratio 1: 1, the outer diameter of the front cartridge chamber 1 can be reduced accordingly. If necessary, a centering aid must then be provided for the front cartridge so that the two cartridges can be emptied without difficulty using a standard cartridge gun.

Landscapes

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

Abstract

L'invention concerne un dispositif pour doser des produits à deux composants devant être mélangés dans un rapport de mélange prédéterminé. Ce dispositif comprend deux chambres (1 et 2) disposées l'une derrière l'autre dans le sens axial et qui contiennent des tubes (3 et 4) placés de manière concentrique dans lesdites chambres. Ces tubes peuvent coulisser de manière télescopique l'un dans l'autre et comportent au niveau de leurs extrémités avant et arrière, des ouvertures (5 et 6) permettant l'acheminement des composants liquides à l'intérieur des tubes, jusqu'à l'ouverture de prélèvement. Ces dispositifs se présentent de préférence sous forme de cylindres, dont les dimensions extérieures sont choisies de manière qu'un pistolet à cartouche standard puisse être utilisé pour exprimer les produits à deux composants hors de ce dispositif.
EP98954317A 1997-10-10 1998-10-01 Dispositif pour stocker, exprimer et doser des compositions a deux composants Expired - Lifetime EP0942787B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19744746 1997-10-10
DE19744746A DE19744746A1 (de) 1997-10-10 1997-10-10 Vorrichtung zum Lagern, Auspressen und Dosieren von Zweikomponenten-Zusammensetzungen
PCT/EP1998/006260 WO1999019079A1 (fr) 1997-10-10 1998-10-01 Dispositif pour stocker, exprimer et doser des compositions a deux composants

Publications (2)

Publication Number Publication Date
EP0942787A1 true EP0942787A1 (fr) 1999-09-22
EP0942787B1 EP0942787B1 (fr) 2002-01-23

Family

ID=7845135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98954317A Expired - Lifetime EP0942787B1 (fr) 1997-10-10 1998-10-01 Dispositif pour stocker, exprimer et doser des compositions a deux composants

Country Status (4)

Country Link
EP (1) EP0942787B1 (fr)
DE (2) DE19744746A1 (fr)
ES (1) ES2172235T3 (fr)
WO (1) WO1999019079A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP719798A0 (en) * 1998-11-19 1998-12-17 Ramset Fasteners (Aust.) Pty. Limited A cartridge dispensing gun
WO2002049938A2 (fr) 2000-12-21 2002-06-27 Wacker-Chemie Gmbh Piece rapportee de dispositif de dosage
DE10064082A1 (de) * 2000-12-21 2002-07-11 Wacker Chemie Gmbh Dosiervorrichtungsaufsatz
DE10140650A1 (de) * 2001-08-18 2003-02-27 Wella Ag Spender, insbesondere für pastöse Massen
DE03739058T1 (de) 2003-06-09 2007-02-08 Tah Industries, Inc. Zweifachflüssigkeitskartusche
US7237693B2 (en) * 2004-09-10 2007-07-03 Tah Industries, Inc. Dual fluid cartridge for storing and dispensing fluids in unequal ratios
US7497355B2 (en) 2005-01-08 2009-03-03 Nordson Corporation Dual fluid cartridge with reduced fluid waste
DE102005027029A1 (de) 2005-06-11 2006-12-14 Lemuth Gmbh Mischeinsatz und Verfahren zum Vormischen von zwei fließfähigen Komponenten
NZ566868A (en) 2005-09-03 2010-01-29 Artex Rawlplug Ltd Cartridge dispenser
CN101443241B (zh) 2006-03-20 2011-01-12 诺信公司 推进剂驱动的双流体筒以及用于组装该双流体筒的方法
US7748567B2 (en) 2006-03-29 2010-07-06 Nordson Corporation Single dose dual fluid cartridge for use with hand-held applicators
WO2008109130A1 (fr) * 2007-03-05 2008-09-12 Robert Craig Virnelson Distributeur de deux composants
DE102015105186A1 (de) * 2015-04-02 2016-10-06 Rublic + Canzler GmbH Austragvorrichtung für pastöse Massen
CN108001881A (zh) * 2017-12-13 2018-05-08 苏州源泰鸿贸易有限公司 一种润滑油包装桶桶压装置
DE202025000208U1 (de) 2025-01-29 2025-05-22 Patrick Bales Zwei-Komponenten-Kartusche mit abnehmbarem Kartuschenkopf und zusätzlichem Schutzrohr

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US4220261A (en) * 1978-04-19 1980-09-02 White Douglas J Dispensing container assembly
DE2927584A1 (de) 1979-07-07 1981-01-22 Henkel Kgaa Vorrichtung zum dosieren von zweikomponenten-produkten
DE3040923A1 (de) 1980-10-30 1982-05-27 Hilti AG, 9494 Schaan Geraet zum mischen und abgeben von mehrkomponenten-massen
EP0313519B1 (fr) 1987-10-23 1991-07-24 Gurit-Essex AG Installation pour doser et mélanger au moins deux composants réactionnels
DE58900981D1 (de) 1988-07-13 1992-04-23 Gurit Essex Ag Verfahren zum ausstossen einer in einer kartusche enthaltenen substanz und einrichtung zur durchfuehrung des verfahrens.
GB2246127B (en) 1990-04-20 1994-06-08 Branko Kozulic Improvements in or relating to acrylic monomers
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See references of WO9919079A1 *

Also Published As

Publication number Publication date
DE59802892D1 (de) 2002-03-14
DE19744746A1 (de) 1999-04-15
WO1999019079A1 (fr) 1999-04-22
EP0942787B1 (fr) 2002-01-23
ES2172235T3 (es) 2002-09-16

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