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EP1676791B1 - Plural chamber cartridge for a multi componet plastic mass with axially aligned chambers - Google Patents

Plural chamber cartridge for a multi componet plastic mass with axially aligned chambers Download PDF

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Publication number
EP1676791B1
EP1676791B1 EP05028464A EP05028464A EP1676791B1 EP 1676791 B1 EP1676791 B1 EP 1676791B1 EP 05028464 A EP05028464 A EP 05028464A EP 05028464 A EP05028464 A EP 05028464A EP 1676791 B1 EP1676791 B1 EP 1676791B1
Authority
EP
European Patent Office
Prior art keywords
chamber
cartridge
annular
tub
tube
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
EP05028464A
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German (de)
French (fr)
Other versions
EP1676791A1 (en
Inventor
Frank Ritter
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Ritter GmbH
Original Assignee
Ritter GmbH
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Filing date
Publication date
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Publication of EP1676791A1 publication Critical patent/EP1676791A1/en
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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
    • B05C17/00553—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
    • B05C17/00553—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
    • 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

Definitions

  • the invention relates to a multi-chamber cartridge for multicomponent plastic compositions such as silicones, adhesives and the like with axially successively arranged chambers for receiving the components according to the preamble of claim 1.
  • the two chambers each associated with its own piston, which are operated together to express the two components, arranged in a cylindrical cartridge tube one behind the other.
  • the first chamber is formed between the cartridge tube and a concentric inner tube arranged therein, which extends over only about half the length of the cartridge tube.
  • This annular chamber is closed by a rear-inserted annular piston.
  • the second, axially behind the chamber is formed by a forwardly extended to a cup piston, the cup wall rests against the inner wall of the cartridge tube.
  • the Rear chamber also contains a central pin projecting from the piston forward, which dips into the inner tube of the front chamber when advancing the rear piston.
  • the rear chamber is delimited by a radial wall adjoining the end of the inner tube of the front chamber, which rests against the inner wall of the inner chamber of the rear chamber.
  • a two-chamber cartridge with the combination of features of the preamble of claim 1 is from the unpublished, but prioritized senior document EP 1 634 654 A1 , Fig. 8 there known.
  • the double-walled insert forms at its front end a transversely divided mouthpiece, one outlet channel of which communicates with the inner sub-chamber in the front part of the cartridge tube interior, and the other part of which is in communication with the annular outer sub-chamber in the front part of the cartridge tube interior.
  • the annular space between the spaced-apart tube walls of the double-walled insert connects the annular outer sub-chamber in the front part of the cartridge tube interior with the chamber formed in the rear part of the cartridge tube.
  • the invention has for its object to provide a multi-chamber cartridge with axially one behind the other chambers, in which a simple filling of each of the chambers on a standard filling plant is possible, and which also makes it possible to use the cartridge as needed as a three-chamber cartridge.
  • the front chamber is formed by the front part of the interior of the cartridge tube
  • the rear chamber is formed by the interior of a cup, which is inserted into the rear part of the cartridge tube only after filling and closing with a piston. Therefore, in the arrangement according to the invention both chambers can be filled separately on a standard filling line with the respective component and then closed by means of a piston before the cup forming the rear chamber is inserted into the cartridge tube.
  • the multi-chamber cartridge consists of a rear open cartridge tube 1 with a front end wall 2 and a molded mouthpiece 3, a double wall insert 4 concentrically inserted in the front part of the cartridge tube 1 with a front end wall 5 and a molded inner mouthpiece 6, concentric in Mouthpiece 3 is arranged, a piston assembly of an annular piston 7 and a central piston 8 for closing the front part of the cartridge formed front component chamber K1, further from a to be used in the rear part of the cartridge tube 1 and a rear chamber K2 forming cup 9 with a rear cup bottom 10, an integrally formed central hollow pin 11 and a front open cup end occlusive annular piston 12th
  • FIG. 1 shows the state of the multi-chamber cartridge at the end of production, where the component chambers K1 and K2 formed in the front part of the cartridge tube 1 and the cup 9 are already filled and closed with the respective piston 7, 8 and 12, wherein the cartridge tube 1 and cup. 9 but still separate.
  • the cup 9 is inserted into the rear part of the cartridge tube, and the multi-chamber cartridge is ready for use, ie the squeezing of the cartridge can begin.
  • FIG. 1 At first, however, are still related to FIG. 1 to explain some details of the cartridge assembly.
  • a double-walled insert 4 is inserted in the front part of the cartridge tube 1.
  • This forms a concentric double-walled inner tube within the front part of the cartridge tube and thus divides the front part of the interior of the cartridge tube 1 into an annular outer partial chamber K1a and an inner partial chamber K1b.
  • the two sub-chambers are filled with the same first material component, they are not in communication with each other. At the same time, however, this also creates the option of using the cartridge according to the invention as a three-chamber cartridge for three material components.
  • the double-walled insert 4 forms with its two concentric tube walls 41 and 42 an annular gap-shaped intermediate space 43, which, as will be described below, as a flow channel for in the rear chamber K2, ie in the cup 9, located material component to the mouthpiece assembly 3, 6 is used ,
  • the insert 4 is suitably connected to the front end wall 2 of the cartridge tube 1, which can be done in a conventional manner by a correspondingly shaped, not shown in the drawings latching connection, but also by ultrasonic welding, gluing or the like. It is also understood that the insert 4 is centered by suitable measures not shown in the schematic drawings but known to those skilled in the art.
  • the front end wall 5 of the insert 4 is formed so that the inner partial chamber K1b is completed by this end wall, on which the inner mouthpiece 6 is formed, so that this inner partial chamber K1b through the inner mouthpiece 6 can be emptied ,
  • the front end wall 5 of the insert 4 by correspondingly arranged ribs, grooves or the like openings 51, 52, which connect the outer part of the chamber K1 a with the annulus between the mouthpiece 3 and the inner mouthpiece 6, and also the gap 43 connect between the tube walls 41, 42 of the insert 4 with the annular space between the mouthpiece 3 and the inner mouthpiece 6.
  • the annular piston 12 which closes the cup 9 and thus the rear chamber K2 has an annular groove 13, which, as the other drawing figures show, is arranged and formed complementary to the rear end region of the insert 4 projecting beyond the pistons 7, 8. so that this rear end portion when inserting the cup 9 in the cartridge tube 1 is immersed in this annular groove 13, and the annular piston 12 also has a ring of opening out into the annular groove 13 openings or holes 14.
  • the second material component from the rear chamber K2 when the cup according to FIG. 2 is inserted into the cartridge tube 1, in the serving as a flow channel gap between the tube walls 41, 42 of the insert 4 exit.
  • the means for sealing the two chambers until use namely the front chamber K1 in the mouthpiece area and the rear chamber K2, for example by a sealing foil over the annular piston 12, are not shown in the schematic drawings for reasons of simplicity.
  • FIGS. 2 to 5 show the function of the multi-chamber cartridge during the ejection process.
  • FIG. 2 shows the expressive cartridge.
  • the front end wall of the annular piston 12 of the cup 9 inserted into the cartridge tube 1 abuts against the rear end walls of the pistons 7 and 8; the bottom of the annular groove 13 in the annular piston 12 abuts against the rear end face of the insert tube walls 41, 42; the front end surface of the pipe wall of the cup 9 abuts against the rear end surface of the annular piston 7, and the front end surface of the pin 11 abuts against the rear end surface of the inner piston 8.
  • the cup 9 is advanced within the cartridge tube 1.
  • the annular piston 12 is fixed by the insert 4 in its axial position, while the annular piston 7 and the inner piston 8 are advanced through the tube wall of the cup 9 and through the central pin 11.
  • the two chambers K1 (consisting of the sub-chambers K1a and K1b) and K2 are thus axially compressed to the same extent, so that material is pressed out of these.
  • the material from the front partial chamber K1a passes through the passage openings 51 into the annular space between the mouthpiece 3 and the inner mouthpiece 6; Material from the inside Partial chamber K1b enters the interior mouthpiece 6, and material from the rear chamber K2 passes through the gap 43 of the insert tube walls 41, 42 and the outlet openings 52 also in the annular space between the mouthpiece 3 and the inner mouthpiece 6. From the mouthpiece assembly then get the Material streams from the space between the outer mouthpiece 3 and the inner mouthpiece 6 and from the inner mouthpiece 6 in a conventional, placed on the mouthpiece assembly mixer, the material components from the two chambers K1 and K2 (or, if the cartridge is used as a three-chamber cartridge , from all three chambers) intimately mixed.
  • FIG. 5 shows the final state with completely empty cartridge. As you can see, the emptying is almost free of residue. A small amount remains, except in the mouthpiece, only in the space 43 between the insert tube walls 41, 42nd
  • the mixing ratios can be selected within wide limits by appropriate choice of the relative cross sections of the component chambers K1 and K2.
  • the cross section of the rear chamber K2 in the cup 9 can be changed by more or less large diameter of the central pin 11, or by the outer diameter of the cup 9 is reduced, while the cup outer wall receives radial ribs for support within the cartridge tube wall 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Specialized In Special Use (AREA)
  • Tubes (AREA)
  • Coating Apparatus (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Double chamber cartridge for two-component plastic compositions such as silicones or adhesives, with axial chambers (K1, K2) one behind another for reception of the components. The front chamber K1 has a double-wall insert (4) in a ring-shaped external outer chamber (K1a) and an inner partial chamber (K1b). The cartridge includes pistons (7,8,12).

Description

Die Erfindung betrifft eine Mehrkammerkartusche für mehrkomponentige plastische Massen wie Silikone, Klebstoffe und dergleichen mit axial hintereinander angeordneten Kammern zur Aufnahme der Komponenten gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a multi-chamber cartridge for multicomponent plastic compositions such as silicones, adhesives and the like with axially successively arranged chambers for receiving the components according to the preamble of claim 1.

Neben den altbekannten Standardformen von Zweikammerkartuschen mit Längsunterteilung des Innenraums eines zylindrischen Kartuschenrohrs in zwei Kammern durch eine Querwand (ältere Bauform) oder ein koaxiales Innenrohr (neuere Bauform als Koaxialkartusche) sind auch schon Zweikammerkartuschen mit axial hintereinander liegenden Kammern bekannt geworden. Beispiele hierfür finden sich in den US-Patenten 4 050 612 , 4 029 236 und 4 961 520 sowie in der EP-0-624 403 A1 .In addition to the well-known standard forms of two-chamber cartridges with longitudinal division of the interior of a cylindrical cartridge tube in two chambers by a transverse wall (older design) or a coaxial inner tube (newer design than coaxial cartridge) are already known two-chamber cartridges with axially one behind the other chambers. Examples of this can be found in the U.S. Patents 4,050,612 . 4 029 236 and 4,961,520 as well as in the EP-0-624 403 A1 ,

Bei der aus der EP-0 624 403 A1 bekannten Anordnung sind die beiden Kammern, denen jeweils ein eigener Kolben zugeordnet ist, die zum Ausdrücken der beiden Komponenten gemeinsam betätigt werden, in einem zylindrischen Kartuschenrohr hintereinander angeordnet. Die erste Kammer ist dabei zwischen dem Kartuschenrohr und einem darin angeordneten konzentrischen Innenrohr gebildet, das sich nur über etwa die halbe Länge des Kartuschenrohrs erstreckt. Diese ringförmige Kammer ist durch einen hinten eingesetzten ringförmigen Kolben abgeschlossen. Die zweite, axial dahinter liegende Kammer ist durch einen nach vorne zu einem Becher erweiterten Kolben gebildet, dessen Becherwand an der Innenwand des Kartuschenrohrs anliegt. Diese Becherwand stößt mit ihrem vorderen Rand am Ringkolben der ersten Kammer an, so daß bei Druckausübung auf den die hintere Kammer abschließenden Kolben dieser Druck auf den die vordere Kammer abschließenden Ringkolben übertragen wird und beide Kolben gemeinsam vorbewegt werden. Die hintere Kammer enthält außerdem einen von deren Kolben nach vorne vorspringenden zentrischen Zapfen, der beim Vorschieben des hinteren Kolbens in das Innenrohr der vorderen Kammer eintaucht. An ihrem vorderen Ende ist die hintere Kammer durch eine sich am Ende des Innenrohrs der vorderen Kammer anschließende Radialwand begrenzt, die außen an der Becherinnenwand der hinteren Kammer anliegt.At the time of the EP-0 624 403 A1 Known arrangement, the two chambers, each associated with its own piston, which are operated together to express the two components, arranged in a cylindrical cartridge tube one behind the other. The first chamber is formed between the cartridge tube and a concentric inner tube arranged therein, which extends over only about half the length of the cartridge tube. This annular chamber is closed by a rear-inserted annular piston. The second, axially behind the chamber is formed by a forwardly extended to a cup piston, the cup wall rests against the inner wall of the cartridge tube. This cup wall abuts with its front edge on the annular piston of the first chamber, so that when pressure is applied to the rear chamber final piston this pressure is transmitted to the front chamber final annular piston and both pistons are advanced together. The Rear chamber also contains a central pin projecting from the piston forward, which dips into the inner tube of the front chamber when advancing the rear piston. At its front end, the rear chamber is delimited by a radial wall adjoining the end of the inner tube of the front chamber, which rests against the inner wall of the inner chamber of the rear chamber.

Die Konstruktion dieser bekannten Zweikammerkartusche bedingt es, daß die beiden Kammern nach dem notwendigen vorherigen Montieren der Kartusche nur vom Kartuschenmundstück her befüllt werden kann, was relativ schwierig ist und besondere Einrichtungen erfordert, und wobei auch die Entlüftung nicht unproblematisch ist.The construction of this known two-chamber cartridge requires that the two chambers after the necessary previous mounting of the cartridge can be filled only from the cartridge mouthpiece, which is relatively difficult and requires special facilities, and wherein the vent is not without problems.

Eine Zweikammerkartusche mit der Merkmalkombination des Oberbegriffs des Patentanspruchs 1 ist aus dem nicht vorveröffentlichten, aber prioritätsälteren Dokument EP 1 634 654 A1 , dort Fig. 8 bekannt. Dort bildet der doppelwandige Einsatz an seinem vorderen Ende ein quer geteiltes Mundstück, dessen einer Austrittskanal mit der inneren Teilkammer im vorderen Teil des Kartuschenrohrinnenraums in Verbindung steht, und dessen anderer Teil mit der ringförmigen äußeren Teilkammer im vorderen Teil des Kartuschenrohrinnenraums in Verbindung steht. Der ringförmige Zwischenraum zwischen den beabstandeten Rohrwänden des doppelwandigen Einsatzes verbindet dabei die ringförmige äußere Teilkammer im vorderen Teil des Kartuschenrohrinnenraums mit der im hinteren Teil des Kartuschenrohrs gebildeten Kammer. Auch bei dieser prioritätsälteren Anordnung müssen die Kammern sämtlich durch den Kartuschenhals befüllt werden, und diese prioritätsältere Anordnung kann nur als Zweikammerkartusche benutzt werden.A two-chamber cartridge with the combination of features of the preamble of claim 1 is from the unpublished, but prioritized senior document EP 1 634 654 A1 , Fig. 8 there known. There, the double-walled insert forms at its front end a transversely divided mouthpiece, one outlet channel of which communicates with the inner sub-chamber in the front part of the cartridge tube interior, and the other part of which is in communication with the annular outer sub-chamber in the front part of the cartridge tube interior. The annular space between the spaced-apart tube walls of the double-walled insert connects the annular outer sub-chamber in the front part of the cartridge tube interior with the chamber formed in the rear part of the cartridge tube. Even with this priority senior arrangement, the chambers must all be filled by the cartridge neck, and this prioritized arrangement can only be used as a two-chamber cartridge.

Der Erfindung liegt die Aufgabe zugrunde, eine Mehrkammerkartusche mit axial hintereinander liegenden Kammern zu schaffen, bei welcher ein einfaches Befüllen jeder der Kammern auf einer Standardabfüllanlage möglich ist, und die es auch ermöglicht, die Kartusche bei Bedarf als Dreikammerkartusche zu benutzen.The invention has for its object to provide a multi-chamber cartridge with axially one behind the other chambers, in which a simple filling of each of the chambers on a standard filling plant is possible, and which also makes it possible to use the cartridge as needed as a three-chamber cartridge.

Diese Aufgabe wird gemäß der Erfindung durch die im Anspruch 1 angegebene Anordnung gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved according to the invention by the arrangement specified in claim 1. Advantageous embodiments and modifications of the invention are the subject of the dependent claims.

Bei der erfindungsgemäßen Anordnung ist die vordere Kammer durch den vorderen Teil des Innenraums des Kartuschenrohrs gebildet, und die hintere Kammer ist durch den Innenraum eines Bechers gebildet, der erst nach dem Füllen und Verschließen mit einem Kolben in den hinteren Teil des Kartuschenrohrs eingesetzt wird. Daher können bei der erfindungsgemäßen Anordnung beide Kammern separat auf einer Standardabfüllanlage mit der jeweiligen Komponente befüllt und sodann mittels eines Kolbens verschlossen werden, bevor der die hintere Kammer bildende Becher in das Kartuschenrohr eingesetzt wird.In the arrangement according to the invention, the front chamber is formed by the front part of the interior of the cartridge tube, and the rear chamber is formed by the interior of a cup, which is inserted into the rear part of the cartridge tube only after filling and closing with a piston. Therefore, in the arrangement according to the invention both chambers can be filled separately on a standard filling line with the respective component and then closed by means of a piston before the cup forming the rear chamber is inserted into the cartridge tube.

Wegen der weiteren Einzelheiten der erfindungsgemäßen Anordnung wird auf die nachfolgende Beschreibung eines Ausführungsbeispiels und der anliegenden Zeichnungen Bezug genommen, in denen zeigt:

Fig. 1
im Axialschnitt eine Mehrkammerkartusche nach der Erfindung mit gefüllten Kammern, wobei jedoch die hintere Kammer noch nicht in das Kartuschenrohr eingesetzt ist,
Fig. 2
die gebrauchsfertige Mehrkammerkartusche nach der Erfindung vor Beginn des Ausdrückens,
Fig. 3
die Anordnung nach Fig. 1 nach einer anfänglichen Phase des Ausdrückens,
Fig. 4
die Kartusche im weitgehend ausgedrückten Zustand, und
Fig. 5
die Kartusche im vollständig ausgedrückten Zustand.
For further details of the arrangement according to the invention reference is made to the following description of an embodiment and the accompanying drawings, in which:
Fig. 1
in axial section a multi-chamber cartridge according to the invention with filled chambers, but the rear chamber is not yet in the cartridge tube is inserted,
Fig. 2
the ready-to-use multi-chamber cartridge according to the invention before the start of the squeezing,
Fig. 3
the arrangement after Fig. 1 after an initial phase of expression,
Fig. 4
the cartouche in largely expressed condition, and
Fig. 5
the cartridge in the fully expressed state.

Gemäß den Zeichnungen besteht die erfindungsgemäße Mehrkammerkartusche aus einem hinten offenen Kartuschenrohr 1 mit einer vorderen Stirnwand 2 und einem angeformten Mundstück 3, einem konzentrisch im vorderen Teil des Kartuschenrohrs 1 eingesetzten Doppelwandeinsatz 4 mit einer vorderen Stirnwand 5 und einem angeformten inneren Mundstück 6, das konzentrisch im Mundstück 3 angeordnet ist, einer Kolbenanordnung aus einem Ringkolben 7 und einem mittigen Kolben 8 zum Verschluß der im vorderen Teil des Kartuschenrohrs gebildeten vorderen Komponentenkammer K1, weiter aus einem in den hinteren Teil des Kartuschenrohrs 1 einzusetzenden und eine hintere Kammer K2 bildenden Becher 9 mit einem hinteren Becherboden 10, einem angeformten mittigen Hohlzapfen 11 und einem das vordere offene Becherende verschließenden Ringkolben 12.According to the drawings, the multi-chamber cartridge according to the invention consists of a rear open cartridge tube 1 with a front end wall 2 and a molded mouthpiece 3, a double wall insert 4 concentrically inserted in the front part of the cartridge tube 1 with a front end wall 5 and a molded inner mouthpiece 6, concentric in Mouthpiece 3 is arranged, a piston assembly of an annular piston 7 and a central piston 8 for closing the front part of the cartridge formed front component chamber K1, further from a to be used in the rear part of the cartridge tube 1 and a rear chamber K2 forming cup 9 with a rear cup bottom 10, an integrally formed central hollow pin 11 and a front open cup end occlusive annular piston 12th

In den Zeichnungen ist die Füllung der vorderen Komponentenkammer K1 und der hinteren Komponentenkammer K2 mit der einen bzw. der anderen Materialkomponente jeweils durch Schraffuren dargestellt. Figur 1 zeigt den Zustand der Mehrkammerkartusche am Ende der Fertigung, wo die im vorderen Teil des Kartuschenrohrs 1 und im Becher 9 gebildeten Komponentenkammern K1 bzw. K2 bereits gefüllt und mit dem jeweiligen Kolben 7, 8 bzw. 12 verschlossen sind, wobei Kartuschenrohr 1 und Becher 9 aber noch getrennt sind. Bei der Darstellung nach Figur 2 ist der Becher 9 in den hinteren Teil des Kartuschenrohrs eingesetzt, und die Mehrkammerkartusche ist gebrauchsfertig, d. h. das Auspressen der Kartusche kann beginnen.In the drawings, the filling of the front component chamber K1 and the rear component chamber K2 with the one or the other material component is represented by hatching. FIG. 1 shows the state of the multi-chamber cartridge at the end of production, where the component chambers K1 and K2 formed in the front part of the cartridge tube 1 and the cup 9 are already filled and closed with the respective piston 7, 8 and 12, wherein the cartridge tube 1 and cup. 9 but still separate. In the presentation after FIG. 2 the cup 9 is inserted into the rear part of the cartridge tube, and the multi-chamber cartridge is ready for use, ie the squeezing of the cartridge can begin.

Zunächst sind aber noch mit Bezug auf Figur 1 einige Einzelheiten der Kartuschenanordnung zu erläutern.At first, however, are still related to FIG. 1 to explain some details of the cartridge assembly.

Wie schon erwähnt, ist im vorderen Teil des Kartuschenrohrs 1 ein doppelwandiger Einsatz 4 eingesetzt. Dieser bildet innerhalb des vorderen Teils des Kartuschenrohrs ein konzentrisches doppelwandiges Innenrohr und unterteilt so den vorderen Teil des Innenraums des Kartuschenrohrs 1 in eine ringförmige äußere Teilkammer K1 a und eine innere Teilkammer K1b. Die beiden Teilkammern sind zwar mit der gleichen ersten Materialkomponente befüllt, stehen miteinander aber nicht in Verbindung. Zugleich ist damit aber auch die Option geschaffen, die erfindungsgemäße Kartusche als Dreikammerkartusche für drei Materialkomponenten einzusetzen.As already mentioned, a double-walled insert 4 is inserted in the front part of the cartridge tube 1. This forms a concentric double-walled inner tube within the front part of the cartridge tube and thus divides the front part of the interior of the cartridge tube 1 into an annular outer partial chamber K1a and an inner partial chamber K1b. Although the two sub-chambers are filled with the same first material component, they are not in communication with each other. At the same time, however, this also creates the option of using the cartridge according to the invention as a three-chamber cartridge for three material components.

Der doppelwandige Einsatz 4 bildet mit seinen beiden konzentrischen Rohrwänden 41 und 42 einen ringspaltförmigen Zwischenraum 43, der, wie im folgenden noch beschrieben wird, als Strömungskanal für die in der hinteren Kammer K2, also im Becher 9, befindliche Materialkomponente zur Mundstückanordnung 3, 6 dient. Der Einsatz 4 ist in geeigneter Weise mit der vorderen Stirnwand 2 des Kartuschenrohrs 1 verbunden, was in an sich bekannter Weise durch eine entsprechend gestaltete, in den Zeichnungen nicht dargestellte Rastverbindung, aber auch durch Ultraschallschweißen, Kleben oder dergleichen erfolgen kann. Es versteht sich auch, daß der Einsatz 4 durch geeignete, in den schematischen Zeichnungen nicht dargestellte, aber dem Fachmann bekannte Maßnahmen zentriert ist.The double-walled insert 4 forms with its two concentric tube walls 41 and 42 an annular gap-shaped intermediate space 43, which, as will be described below, as a flow channel for in the rear chamber K2, ie in the cup 9, located material component to the mouthpiece assembly 3, 6 is used , The insert 4 is suitably connected to the front end wall 2 of the cartridge tube 1, which can be done in a conventional manner by a correspondingly shaped, not shown in the drawings latching connection, but also by ultrasonic welding, gluing or the like. It is also understood that the insert 4 is centered by suitable measures not shown in the schematic drawings but known to those skilled in the art.

Wie aus den Zeichnungen hervorgeht, ist die vordere Stirnwand 5 des Einsatzes 4 so ausgebildet, daß die innere Teilkammer K1b durch diese Stirnwand abgeschlossen ist, an welcher das innere Mundstück 6 angeformt ist, so daß diese innere Teilkammer K1b durch das innere Mundstück 6 entleerbar ist. Wie weiter ersichtlich ist, bildet die vordere Stirnwand 5 des Einsatzes 4 durch entsprechend angeordnete Rippen, Nuten oder dergleichen Öffnungen 51, 52, welche die äußere Teilkammer K1 a mit dem Ringraum zwischen dem Mundstück 3 und dem inneren Mundstück 6 verbinden, und auch den Zwischenraum 43 zwischen den Rohrwänden 41, 42 des Einsatzes 4 mit dem Ringraum zwischen dem Mundstück 3 und dem inneren Mundstück 6 verbinden.As is apparent from the drawings, the front end wall 5 of the insert 4 is formed so that the inner partial chamber K1b is completed by this end wall, on which the inner mouthpiece 6 is formed, so that this inner partial chamber K1b through the inner mouthpiece 6 can be emptied , As can further be seen, the front end wall 5 of the insert 4 by correspondingly arranged ribs, grooves or the like openings 51, 52, which connect the outer part of the chamber K1 a with the annulus between the mouthpiece 3 and the inner mouthpiece 6, and also the gap 43 connect between the tube walls 41, 42 of the insert 4 with the annular space between the mouthpiece 3 and the inner mouthpiece 6.

Der Ringkolben 12, der den Becher 9 und somit die hintere Kammer K2 verschließt, weist eine Ringnut 13 auf, die, wie die übrigen Zeichnungsfiguren zeigen, komplementär zum hinteren, über die Kolben 7, 8 überstehenden Endbereich des Einsatzes 4 angeordnet und ausgebildet ist, so daß dieser hintere Endbereich beim Einsetzen des Bechers 9 in das Kartuschenrohr 1 in diese Ringnut 13 eintaucht, und der Ringkolben 12 weist außerdem einen Kranz von in die Ringnut 13 ausmündenden Öffnungen oder Bohrungen 14 auf. Durch diese Bohrungen 14 kann die zweite Materialkomponente aus der hinteren Kammer K2, wenn der Becher gemäß Figur 2 in das Kartuschenrohr 1 eingesetzt ist, in den als Strömungskanal dienenden Zwischenraum zwischen den Rohrwänden 41, 42 des Einsatzes 4 austreten. Die Mittel zum Versiegeln der beiden Kammern bis zum Gebrauch, nämlich der vorderen Kammer K1 im Mundstückbereich und der hinteren Kammer K2, beispielsweise durch eine Siegelfolie über dem Ringkolben 12, sind in den schematischen Zeichnungen aus Vereinfachungsgründen nicht dargestellt.The annular piston 12, which closes the cup 9 and thus the rear chamber K2, has an annular groove 13, which, as the other drawing figures show, is arranged and formed complementary to the rear end region of the insert 4 projecting beyond the pistons 7, 8. so that this rear end portion when inserting the cup 9 in the cartridge tube 1 is immersed in this annular groove 13, and the annular piston 12 also has a ring of opening out into the annular groove 13 openings or holes 14. Through these holes 14, the second material component from the rear chamber K2, when the cup according to FIG. 2 is inserted into the cartridge tube 1, in the serving as a flow channel gap between the tube walls 41, 42 of the insert 4 exit. The means for sealing the two chambers until use, namely the front chamber K1 in the mouthpiece area and the rear chamber K2, for example by a sealing foil over the annular piston 12, are not shown in the schematic drawings for reasons of simplicity.

Die Figuren 2 bis 5 zeigen die Funktion der Mehrkammerkartusche beim Ausdrückvorgang.The FIGS. 2 to 5 show the function of the multi-chamber cartridge during the ejection process.

Figur 2 zeigt die ausdrückbereite Kartusche. Die vordere Stirnwand des Ringkolbens 12 des in das Kartuschenrohr 1 eingesetzten Bechers 9 liegt an den hinteren Stirnwänden der Kolben 7 und 8 an; der Boden der Ringnut 13 im Ringkolben 12 liegt an der rückwärtigen Stirnfläche der Einsatzrohrwände 41, 42 an; die vordere Stirnfläche der Rohrwand des Bechers 9 liegt an der rückwärtigen Stirnfläche des Ringkolbens 7 an, und die vordere Stirnfläche des Zapfens 11 liegt an der rückwärtigen Stirnfläche des Innenkolbens 8 an. FIG. 2 shows the expressive cartridge. The front end wall of the annular piston 12 of the cup 9 inserted into the cartridge tube 1 abuts against the rear end walls of the pistons 7 and 8; the bottom of the annular groove 13 in the annular piston 12 abuts against the rear end face of the insert tube walls 41, 42; the front end surface of the pipe wall of the cup 9 abuts against the rear end surface of the annular piston 7, and the front end surface of the pin 11 abuts against the rear end surface of the inner piston 8.

Wenn nun mittels eines üblichen Presstempels in einer Ausdrückpistole Pressdruck auf den hinten liegenden Becherboden 10 ausgeübt wird, wird der Becher 9 innerhalb des Kartuschenrohrs 1 vorgeschoben. Dabei wird der Ringkolben 12 durch den Einsatz 4 in seiner Axialposition fixiert, während der Ringkolben 7 und der Innenkolben 8 durch die Rohrwand des Bechers 9 bzw. durch dessen mittigen Zapfen 11 vorgeschoben werden. Die beiden Kammern K1 (bestehend aus den Teilkammern K1a und K1b) und K2 werden also im gleichen Maße axial gestaucht, so daß Material aus diesen ausgepresst wird. Das Material aus der vorderen Teilkammer K1a gelangt durch die Durchtrittsöffnungen 51 in den Ringraum zwischen dem Mundstück 3 und dem inneren Mundstück 6; Material aus der inneren Teilkammer K1b gelangt in das Innere Mundstück 6, und Material aus der hinteren Kammer K2 gelangt durch den Zwischenraum 43 der Einsatzrohrwände 41, 42 und die Austrittsöffnungen 52 ebenfalls in den Ringraum zwischen dem Mundstück 3 und dem inneren Mundstück 6. Aus der Mundstückanordnung gelangen dann die Materialströme aus dem Zwischenraum zwischen dem äußeren Mundstück 3 und dem inneren Mundstück 6 sowie aus dem inneren Mundstück 6 in einen üblichen, auf dem Mundstückanordnung aufgesetzten Mischer, der die Materialkomponenten aus den beiden Kammern K1 und K2 (oder, wenn die Kartusche als Dreikammerkartusche verwendet wird, aus allen drei Kammern) innig miteinander vermischt.If now by means of a conventional press ram in a squeeze gun pressing pressure is exerted on the rear of the cup bottom 10, the cup 9 is advanced within the cartridge tube 1. In this case, the annular piston 12 is fixed by the insert 4 in its axial position, while the annular piston 7 and the inner piston 8 are advanced through the tube wall of the cup 9 and through the central pin 11. The two chambers K1 (consisting of the sub-chambers K1a and K1b) and K2 are thus axially compressed to the same extent, so that material is pressed out of these. The material from the front partial chamber K1a passes through the passage openings 51 into the annular space between the mouthpiece 3 and the inner mouthpiece 6; Material from the inside Partial chamber K1b enters the interior mouthpiece 6, and material from the rear chamber K2 passes through the gap 43 of the insert tube walls 41, 42 and the outlet openings 52 also in the annular space between the mouthpiece 3 and the inner mouthpiece 6. From the mouthpiece assembly then get the Material streams from the space between the outer mouthpiece 3 and the inner mouthpiece 6 and from the inner mouthpiece 6 in a conventional, placed on the mouthpiece assembly mixer, the material components from the two chambers K1 and K2 (or, if the cartridge is used as a three-chamber cartridge , from all three chambers) intimately mixed.

Die Figuren 3 und 4 zeigen Zwischenzustände während des Ausdrückvorgangs; Figur 5 zeigt den Endzustand bei vollständig entleerter Kartusche. Wie man daraus sieht, erfolgt die Entleerung nahezu restmengenfrei. Eine geringe Restmenge verbleibt, außer im Mundstück, nur in dem Zwischenraum 43 zwischen den Einsatzrohrwänden 41, 42.The Figures 3 and 4 show intermediate states during the expressing process; FIG. 5 shows the final state with completely empty cartridge. As you can see, the emptying is almost free of residue. A small amount remains, except in the mouthpiece, only in the space 43 between the insert tube walls 41, 42nd

Wie für den Fachmann leicht ersichtlich ist, lassen sich die Mischungsverhältnisse durch entsprechende Wahl der relativen Querschnitte der Komponentenkammem K1 und K2 in weiten Grenzen wählen. Beispielsweise kann der Querschnitt der hinteren Kammer K2 im Becher 9 durch mehr oder weniger großen Durchmesser des mittigen Zapfens 11 verändert werden, oder dadurch, daß der Außendurchmesser des Bechers 9 verkleinert wird, während die Becheraußenwand radiale Rippen zur Abstützung innerhalb der Kartuschenrohrwand 1 erhält.As is readily apparent to one skilled in the art, the mixing ratios can be selected within wide limits by appropriate choice of the relative cross sections of the component chambers K1 and K2. For example, the cross section of the rear chamber K2 in the cup 9 can be changed by more or less large diameter of the central pin 11, or by the outer diameter of the cup 9 is reduced, while the cup outer wall receives radial ribs for support within the cartridge tube wall 1.

Claims (3)

  1. Multichamber cartridge for multicomponent plastic masses, said cartridge having chambers (K1, K2) disposed axially one behind the other, consisting of
    a cartridge tube (1) that is open at the rear and has a front end wall (2) with a nozzle (3) moulded thereon, a double-walled insert (4), which is disposed in the front part of the cartridge tube interior and has two concentric tube walls (41, 42) spaced apart by a narrow gap (43) and subdivides the front part of the cartridge tube interior into an annular outer sub-chamber (K1a) and an inner sub-chamber (K1b) and is open at the rear,
    an annular piston (7), which closes off the outer sub-chamber (K1a) at the rear, and an inner piston (8), which closes off the inner sub-chamber (K1b) at the rear,
    and a tub (9), which is insertable into the rear part of the cartridge tube (1) and forms a rear chamber (K2) and which has a rear tub base (10) with a central pin (11) moulded thereon as well as an annular piston (12) which closes the open front end of the tub (9) and is disposed between the tub wall and the central pin (11) and in which through-openings (14) are formed,
    wherein the arrangement is such that the wall of the tub (9) rests with its front end face against the annular piston (7) that closes the annular sub-chamber (K1a), the pin (11) rests with its front end face against the piston (8) that closes the inner sub-chamber (K1b), the insert (4) rests with the rear end faces of its tube walls (41, 42) against the annular piston (12) that closes the tub (9), and the through-openings (14) in the annular piston (12) that closes the tub (9) open out into the gap (43) between the tube walls (41, 42) of the insert (4),
    characterized in that the insert (4) is constructed at the front with an end wall (5) having an inner nozzle (6) disposed inside the nozzle (3) of the cartridge tube (1), and that through-openings (51, 52) are provided, which connect the outer sub-chamber (K1a) to the annular space between the nozzle (3) and the inner nozzle (6) as well as the gap (43) between the tube walls (41, 42) of the insert (4) to the annular space between the nozzle (3) and the inner nozzle (6).
  2. Multichamber cartridge according to claim 1, wherein the tube walls (41, 42) of the insert (4) project by a specific distance axially from the rear end face of the pistons (7, 8) that close the front sub-chambers (K1a, K1b), and the annular piston (12) that closes the tub (9) is constructed with an annular groove (13) that is complementary to the projecting length.
  3. Use of a multichamber cartridge according to claim 1 or 2 as a three-chamber cartridge for three material components, of which in each case one is accommodated in the rear chamber (K2) formed by the tub (9) and in the annular and the inner sub-chambers (K1a, K1b) formed in the front part of the cartridge tube interior, respectively.
EP05028464A 2005-01-04 2005-12-24 Plural chamber cartridge for a multi componet plastic mass with axially aligned chambers Expired - Lifetime EP1676791B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005000757A DE102005000757B4 (en) 2005-01-04 2005-01-04 Two-chamber cartridge for two-component plastic masses with axially arranged chambers

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EP1676791A1 EP1676791A1 (en) 2006-07-05
EP1676791B1 true EP1676791B1 (en) 2009-03-04

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US (1) US7431179B2 (en)
EP (1) EP1676791B1 (en)
JP (1) JP2006188286A (en)
AT (1) ATE424356T1 (en)
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US7748567B2 (en) * 2006-03-29 2010-07-06 Nordson Corporation Single dose dual fluid cartridge for use with hand-held applicators
WO2008063222A2 (en) * 2006-05-11 2008-05-29 Dentsply International Inc. Aerosol delivery system for dispensing dental compositions
US9272827B2 (en) 2008-08-29 2016-03-01 Pepsico, Inc. Post-mix beverage system
PE20110784A1 (en) * 2008-08-29 2011-10-27 Pepsico Inc POST-MIXING DRINK SYSTEM
EP2563524B1 (en) 2010-04-28 2020-10-07 IPS Adhesives LLC Apparatus for mixing and dispensing multiple flowable components
US20130168413A1 (en) * 2010-08-16 2013-07-04 Bayer Materialscience Ag Dispensing module and method for filling a dispensing module
CN103052450A (en) * 2010-08-16 2013-04-17 拜耳材料科技股份有限公司 Dispensing module
DE102011000487B4 (en) * 2011-02-03 2015-02-05 CAS Chemotechnische Abpack-Service GmbH Apparatus and method for introducing a Baumontageklebe- and / or construction sealant in a container
US10464797B2 (en) 2016-01-15 2019-11-05 Pepsico, Inc. Post-mix beverage system
US10610045B2 (en) 2016-06-14 2020-04-07 Pepsico, Inc. Beverage system including a removable piercer
DE202019100016U1 (en) * 2019-01-03 2019-02-21 Sulzer Mixpac Ag Cartridge for multi-component materials

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Publication number Priority date Publication date Assignee Title
BE548210A (en) * 1955-01-14
US4029236A (en) * 1976-05-17 1977-06-14 Colgate-Palmolive Company Two product dispenser with cooperating telescoping cylinders
US4050612A (en) * 1976-05-25 1977-09-27 Jules Silver Dispensing container
US4220261A (en) * 1978-04-19 1980-09-02 White Douglas J Dispensing container assembly
US4961520A (en) * 1988-04-06 1990-10-09 Bio-Pak Associates Co-dispensing container and method of filling same
EP0436155B1 (en) * 1990-01-05 1994-08-24 Maderag Ag Extrusion gun for double-wall cartridges
US5310091A (en) * 1993-05-12 1994-05-10 Tremco, Inc. Dual product dispenser
US7237693B2 (en) * 2004-09-10 2007-07-03 Tah Industries, Inc. Dual fluid cartridge for storing and dispensing fluids in unequal ratios

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EP1676791A1 (en) 2006-07-05
DE102005000757A1 (en) 2006-07-20
JP2006188286A (en) 2006-07-20
US20060180598A1 (en) 2006-08-17
ATE424356T1 (en) 2009-03-15
DE502005006740D1 (en) 2009-04-16
US7431179B2 (en) 2008-10-07
DE102005000757B4 (en) 2007-07-19

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