EP2258468B1 - Mixing system for dual component cartridges - Google Patents

Mixing system for dual component cartridges Download PDF

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Publication number
EP2258468B1
EP2258468B1 EP10005821A EP10005821A EP2258468B1 EP 2258468 B1 EP2258468 B1 EP 2258468B1 EP 10005821 A EP10005821 A EP 10005821A EP 10005821 A EP10005821 A EP 10005821A EP 2258468 B1 EP2258468 B1 EP 2258468B1
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EP
European Patent Office
Prior art keywords
outlet channel
baffle plate
mouthpiece
mixing
mixing system
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.)
Active
Application number
EP10005821A
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German (de)
French (fr)
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EP2258468A1 (en
Inventor
Frank Georg Ritter
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.)
Ritter GmbH
Original Assignee
Ritter 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
Priority claimed from DE202009007919U external-priority patent/DE202009007919U1/en
Priority claimed from EP09007452A external-priority patent/EP2258466A1/en
Application filed by Ritter GmbH filed Critical Ritter GmbH
Priority to EP10005821A priority Critical patent/EP2258468B1/en
Publication of EP2258468A1 publication Critical patent/EP2258468A1/en
Application granted granted Critical
Publication of EP2258468B1 publication Critical patent/EP2258468B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
    • B01F25/43141—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles composed of consecutive sections of helical formed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B01F33/50114—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the hand-held gun type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/19—Mixing dentistry compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/36—Mixing of ingredients for adhesives or glues; Mixing adhesives and gas
    • 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

Definitions

  • Two-component cartridges for plastic compositions such as sealants, adhesives, dental molding compounds or other materials are known. They have two chambers, which are often arranged coaxially and often formed by two nested coaxial tubular body, which are nested with their mouthpiece areas.
  • a first chamber is formed by the interior of the inner tubular body and a second chamber is formed as an annular chamber between the outer and the inner tubular body.
  • the two tubular bodies are held in their coaxial position by the annular piston closing the outer annular chamber.
  • the nested mouthpieces of the two tubular bodies form outlets for the material components in the inner first chamber and the outer second chamber, respectively.
  • the two-chamber cartridge is closed by a cap, with which it is resealable even when work is interrupted.
  • a mixer is screwed onto the mouthpiece neck of the outer tubular body, which has a mixing tube in which a number of Mischkörpem is housed axially behind each other to the emerging from the first chamber first material component with the exiting from the second chamber material component as fast as possible to mix homogeneously. At the end of the mixing tube then a completely homogeneous mixture of the two material components should emerge.
  • the one problem is to ensure that the two components of the material are completely separate from each other before the two-component cartridge is broken and can not come into contact with one another to prevent premature reaction of the two components with each other and their setting or curing.
  • the cap on the one hand, the mouthpiece assembly of the two tubular body as a whole closes absolutely tight, and that the cap also makes a completely sealing separation of the outlets from the first chamber and the second chamber.
  • the second problem is the design of the mixing system such that a homogeneous mixing of the two material components with as few mixing elements containing the shortest possible mixing tube is made possible, because the necessary extrusion pressure of the two-component cartridge, of course, the greater, the greater the number of axially successive mixing elements in Mixing tube is, because every other mixing element increases the flow resistance. This problem is all the more significant the more viscous the material components to be squeezed out and mixed are.
  • the mouthpiece portion of the inner tube body which is inserted into the mouthpiece portion of the outer tube body, formed with a coronary arrangement of separate segmental or cylindrical outlet channels which sit like a star in the mouthpiece part of the outer tubular body, wherein the circumferential spaces between the individual outlet channels of the mouthpiece part of the inner Pipe body, which form the outlet channels for the first material component, forming the outlet channels for the second material component.
  • the material strands of the first material component and the second material component which alternate in the circumferential direction then enter into the inlet end of the mixer as a parallel strand bundle.
  • the object of the invention is to provide an arrangement which brings a significant improvement in this problem.
  • closure cap must individually close each of the outlet channels of the mouthpiece portion of the inner tube body and to have an engaging in the respective outlet channel and tightly closing pin must have.
  • the tightness is difficult to achieve even with a wreath of cylindrical pin for cylindrical outlet channels, and still significantly more difficult to achieve in cross-sectionally annular outlet channels.
  • the closure cap must be formed in two parts and have an inner plug part, on which the locking channels engaging in the outlet channels are formed, and have a threaded sleeve which is screwed onto the mouthpiece neck of the outer tubular body.
  • the invention should be able to remedy this further problem in a further embodiment.
  • the arrangement according to the invention consists essentially in that a single, approximately cylindrical outlet channel of the mouthpiece part of the inner tubular body extends only at its outlet end in the form of a coronary arrangement of several outwardly diverging pocket-like extensions in the light cross section of the annular to this outlet channel for the first Material component extending outlet channel for the second material component in the mouthpiece part of the outer tube body.
  • the central region of the mouthpiece part associated with the inner tubular body in the region of its outlet cross section is assigned a baffle plate which covers the central region approximately over a surface area corresponding to the cross sectional area of the cylindrical outlet channel, so that the material of the first material component emerging from the interior of the first tubular body is forced. past the baffle plate radially outward into the pocket-like extensions of the outlet channel, thereby forming a plurality of strands of material exiting the pocket-like extensions with an axial component and a radially outwardly diverging directional component.
  • the baffle plate is formed by a central body associated with the mixer and disposed at the inlet end in front of the first mixing element, which may be knob-shaped and is preferably formed with a deflecting tip pointing counter to the material flow direction, and the mixer the mouthpiece assembly is placed, projects into the outlet end of the outlet channel for the first material component from the interior of the first tubular body.
  • the cap can be made very simple. It only needs to have a central pin, which projects into the cylindrical outlet channel of the mouthpiece part of the inner tubular body and a forms this occluding stopper. Thus, a reliable seal can be achieved very easily.
  • the baffle plate is integrally formed with the mouthpiece part and connected by means of the inner wall of this outlet channel outgoing, rib-like or web-like or similarly formed support elements with the mouthpiece part.
  • the connecting elements are advantageously so far upstream connected to the inner wall of the cylindrical outlet channel, that downstream still a sufficiently long axial cylindrical or slightly conical portion of the outlet channel remains, in which a hollow cap formed on the cap can dip, which acts as a plug and on the Baffle plate is pushed.
  • the flowing through the annular outflow between the mouthpiece parts of the inner tube body and the outer tube body second material component is also divided by the flow obstacles, which are formed by the pocket-like extensions of the outlet channel of the first material component in several strands of material alternately in the circumferential direction with those through the pocket-like expansions emerging material strands of the first material component are arranged.
  • the second material component experiences a respective lateral flow deflection, which is why the material strands of the second material component are affixed with circumferential direction components, thereby immediately mixing with the material strands of the first material component. even before the strands of material reach the first mixing element in the mixing tube of the mixer.
  • the invention thus brings a very significant advantage in terms of the efficiency of mixing the two material components, the number of mixing elements required in the mixing tube, and consequently a very significant reduction of the necessary extrusion pressure, which brings a great advantage especially for viscous masses.
  • the arrangement according to the invention greatly simplifies the design of the closure cap and its sealing safety. Because the inner exit channel for the first material component is cylindrical and centered and only one such channel is present, the closure cap may be integrally formed and have a single central plug which engages the cylindrical portion of the exit channel for the first material component and this is completely sealed closes.
  • the Fig. 1 and 4 show as the first embodiment in each case in axial section the mouthpiece-side end region of a two-component cartridge.
  • the two-component cartridge after the Fig. 1 and 4 consists of an outer tube body 1 with a front end wall 2 and a mouthpiece part 3, which is provided with an external thread 4, and an inner tube body 5 with a mouthpiece part 6.
  • the inner tube body 5 is arranged coaxially in the outer tube body by the mouthpiece part 6 of inner tubular body 5 is inserted into the mouthpiece part 3 of the outer tubular body 1 and locked there.
  • the inner tubular body 5 forms with its inner space 7 a first chamber for receiving a first material component
  • the outer tubular body 1 forms between itself and the inner tube body 5, an annular second chamber 8 for receiving a second material component.
  • the mouthpiece part 6 of the inner tube body 5 forms a cylindrical outlet channel 9 for the first material component
  • the mouthpiece part 3 of the outer tube body 1 forms between it and the mouthpiece part 6 of the inner tube body 5 an annular outlet channel 10 for the second material component.
  • the axially rear, latched in the mouthpiece part 3 of the outer tubular body 1 portion of the mouthpiece part 6 of the inner tubular body 5 has along its circumference a plurality of passageways for connecting the annular second chamber 8 with the annular outlet channel 10, which in the drawing figures 1 and 4 are not visible, because the local section passes through the Verrastungsrippen 11 of the mouthpiece part 6 of the inner tube body 5.
  • Fig. 1 and 4 differ in that in Fig. 1 a mixer 12 is screwed onto the mouthpiece assembly while in Fig. 4 a cap 13 is screwed onto the mouthpiece assembly.
  • the mixer 12 has a mixing tube 14, which is widened at its inlet end to a threaded sleeve 15 which is screwed onto the external thread 4 of the mouthpiece part 3 of the outer tubular body 1, and takes in the mixing tube 14 a number of axially successive, known per se Mixing elements 16, which rotate and divide the strands of material again and again, thus causing the mixing.
  • Fig. 3 shows in perspective view the front end portion of the inner tube body 5 with its mouthpiece part 6.
  • Verrastungsrippen 11 and the circumferentially formed between these passageways 17 are visible in detail, which connect the second chamber 8 with the annular outlet channel 10.
  • the mixer insert 16 consisting of the mixing elements 16 of the mixer 12 has at its lower, ie inlet end a central pin 19 which terminates in a knob-like central body 20 which forms a baffle plate and, when the mixer 12 to the mouthpiece assembly 3, the sixth is placed, protrudes into the outlet end of the inner cylindrical outlet channel 9 and the center region closes, so that the emerging from this outlet channel 9 first material component is divided into four obliquely radially and axially through the pocket-like extensions 18 flowing material strands.
  • the central body 20 preferably has, as shown, an upstream pointing Ablenkspitze 21, which, as shown, may be formed as an approximately cylindrical and rounded pin or conical.
  • the emerging from the annular outlet channel 10 second material component is then also divided by the pocket-like extensions 18 of the outlet channel 9 in several strands of material extending between the strands of material of the first material component and obtained by each taking place in the circumferential direction marflection through the pocket-like extensions 18 a cross-directional component , which favors the immediate mixing with the material strands of the first material component.
  • Fig. 1 This consists of one piece and has on its end wall 22 a molded cylindrical hollow pin 23 whose axial length is dimensioned so that when screwing the cap 13 on the external thread 4 of the mouthpiece part. 3 of the outer tubular body 1 engages in the cylindrical part of the outlet channel 9 of the mouthpiece part 6 of the inner tubular body 5 and sealingly seals it.
  • the baffle plate which is formed by the central body 20 at the inlet end of the mixer end, separately formed by the mouthpiece assembly 3, 6 and comes only by the placement of the mixer with the mouthpiece part 3 in cooperation.
  • Fig. 5 and 6 show a second embodiment of the invention, which differs from the first embodiment in that the baffle plate is formed as part of the mouthpiece part.
  • Fig. 4 and 5 are the same or corresponding elements with the same reference numerals as in the Fig. 1 to 4 provided, and corresponding but modified elements are also provided with the same reference numerals, but with an addition.
  • Fig. 5 shows the mouthpiece side end portion of a two-component cartridge with outer tube body 1 and inner tube body 5 with mounted mixer, while Fig. 6 the end area without patch mixer shows.
  • the outer tubular body 1 with a front end wall 2 and a mouthpiece part 3, which is provided with external thread 4, and the inner tubular body 5 with its mouthpiece part 6 according to the arrangement of the Fig.
  • the mixer 12 is according to the in Fig. 4 formed mixer shown.
  • a difference from the embodiment according to the Fig. 1 to 4 consists in the mixer 12 but in that at the inlet end of the mixer, the in Fig. 4 shown pin 19 with the baffle plate forming the central body 20 is missing.
  • baffle plate 20 a arranged in the outlet end region of the inner mouthpiece part 6 and by webs 19 a with the Inner wall of the mouthpiece part 6 connected.
  • the baffle plate 20a is thus formed integrally with the inner mouthpiece part 6.
  • connection of the webs 19a with the inner wall of the mouthpiece part 6 takes place only at a certain axial distance from the end of the cylindrical portion of the outlet channel 9 upstream offset position and this point is downstream of this joint radially inwardly reset so that a short axial cylindrical end portion 9a of the outlet channel 9 is formed, in which a cylindrical annular sleeve can be immersed on a closure cap and thus can cooperate sealingly.
  • the diameter of the baffle plate 20a is slightly smaller than the light cross section of the cylindrical outlet channel 9, so that such a hollow cylindrical annular projection of a closure cap can slide over the baffle plate 20a and thereby come into cooperation with the end portion 9a of the outlet channel.
  • FIG. 5 and 6 Another possibility of modification of the invention, which is not shown in the drawing, but essentially the embodiment of the Fig. 5 and 6 corresponds, would be a snap connection between the arranged on the inner mouthpiece part 6 baffle plate 20a via correspondingly modified connecting webs 19a and provided in the inner wall of the mouthpiece part 6 counter-elements, for example in the form of a radial gradation.
  • the baffle plate 20a with the connecting webs 19a would then have to be manufactured separately and then inserted and locked. While such an embodiment is basically possible, currently in the Fig. 5 and 6 presented one-piece embodiment favors because it is less expensive to implement manufacturing technology and does not involve the risk that the material pressure on the baffle plate this could be pushed out at possibly incorrect latching.

Description

Zweikomponentenkartuschen für plastische Massen wie beispielsweise Dichtungsmassen, Klebstoffe, Dentalformmassen oder andere Massen sind bekannt. Sie haben zwei Kammern, die oft koaxial angeordnet sind und häufig durch zwei ineinandergesteckte koaxiale Rohrkörper gebildet sind, die mit ihren Mundstückbereichen ineinandergesteckt sind. Dabei ist eine erste Kammer durch den Innenraum des inneren Rohrkörpers gebildet und eine zweite Kammer als Ringkammer zwischen dem äußeren und dem inneren Rohrkörper gebildet. Im hinteren Bereich werden die beiden Rohrkörper durch den die äußere ringförmige Kammer abschließenden Ringkolben in ihrer koaxialen Position gehalten.Two-component cartridges for plastic compositions such as sealants, adhesives, dental molding compounds or other materials are known. They have two chambers, which are often arranged coaxially and often formed by two nested coaxial tubular body, which are nested with their mouthpiece areas. In this case, a first chamber is formed by the interior of the inner tubular body and a second chamber is formed as an annular chamber between the outer and the inner tubular body. In the rear area, the two tubular bodies are held in their coaxial position by the annular piston closing the outer annular chamber.

Die ineinandergesteckten Mundstücke der beiden Rohrkörper bilden Ausläufe für die Materialkomponenten in der inneren ersten Kammer bzw. der äußeren zweiten Kammer. Bis zum Gebrauch ist die Zweikammerkartusche durch eine Verschlusskappe verschlossen, mit der sie auch bei Arbeitsunterbrechung wiederverschließbar ist. Zum Gebrauch wird auf den Mundstückhals des äußeren Rohrkörpers ein Mischer aufgeschraubt, der ein Mischrohr aufweist, in welchem axial hintereinander eine Anzahl von Mischkörpem untergebracht ist, um die aus der ersten Kammer austretende erste Materialkomponente mit der aus der zweiten Kammer austretenden Materialkomponente möglichst schnell und möglichst homogen zu vermischen. Am Ende des Mischrohrs soll dann ein völlig homogenes Gemisch aus den beiden Materialkomponenten austreten.The nested mouthpieces of the two tubular bodies form outlets for the material components in the inner first chamber and the outer second chamber, respectively. Until use, the two-chamber cartridge is closed by a cap, with which it is resealable even when work is interrupted. For use, a mixer is screwed onto the mouthpiece neck of the outer tubular body, which has a mixing tube in which a number of Mischkörpem is housed axially behind each other to the emerging from the first chamber first material component with the exiting from the second chamber material component as fast as possible to mix homogeneously. At the end of the mixing tube then a completely homogeneous mixture of the two material components should emerge.

Die bei solchen Zweikomponentenkartuschen auftretenden Probleme sind bekannt und werden seit langem bearbeitet.The problems encountered with such two-component cartridges are well known and have long been addressed.

Das eine Problem ist die Sicherstellung, dass die beiden Materialkomponenten vor dem Anbrechen der Zweikomponentenkartusche vollkommen getrennt sind und nicht miteinander in Berührung kommen können, um ein vorzeitiges Reagieren der beiden Materialkomponenten miteinander und deren Abbinden oder Aushärten zu vermeiden. Dazu ist es notwendig, dass die Verschlusskappe zum einen die Mundstückanordnung der beiden Rohrkörper insgesamt absolut dicht verschließt, und dass die Verschlusskappe außerdem eine vollkommen abdichtende Trennung der Ausläufe aus der ersten Kammer und der zweiten Kammer herstellt.The one problem is to ensure that the two components of the material are completely separate from each other before the two-component cartridge is broken and can not come into contact with one another to prevent premature reaction of the two components with each other and their setting or curing. For this purpose, it is necessary that the cap on the one hand, the mouthpiece assembly of the two tubular body as a whole closes absolutely tight, and that the cap also makes a completely sealing separation of the outlets from the first chamber and the second chamber.

Das zweite Problem ist die Ausgestaltung des Mischsystems derart, dass ein homogenes Vermischen der beiden Materialkomponenten mit einem möglichst wenige Mischelemente enthaltenden, möglichst kurzen Mischrohr ermöglicht wird, weil der notwendige Auspressdruck der Zweikomponentenkartusche natürlich umso größer ist, je größer die Anzahl der axial aufeinanderfolgenden Mischelemente im Mischrohr ist, denn jedes weitere Mischelement vergrößert den Strömungswiderstand. Dieses Problem ist umso bedeutsamer, je zähflüssiger die auszupressenden und zu mischenden Materialkomponenten sind.The second problem is the design of the mixing system such that a homogeneous mixing of the two material components with as few mixing elements containing the shortest possible mixing tube is made possible, because the necessary extrusion pressure of the two-component cartridge, of course, the greater, the greater the number of axially successive mixing elements in Mixing tube is, because every other mixing element increases the flow resistance. This problem is all the more significant the more viscous the material components to be squeezed out and mixed are.

Insbesondere wird auf die DE 20 2009 007 919 U1 verwiesen (i.e. Stand der Technik nach Art. 54(1), (2) EPÜ, da die beanspruchte Priorität in Teilen als nicht gültig erachtet wird).In particular, on the DE 20 2009 007 919 U1 (Art. 54 (1), (2) EPC, as the claimed priority is not considered valid in parts).

Um den auf die Mundstückanordnung der Zweikomponentenkartusche aufzuschraubenden Mischer möglichst kurz und mit möglichst wenigen Mischelementen ausbilden zu können, ist man bestrebt, die beiden Materialkomponenten schon in der Mundstückanordnung in eine Mehrzahl von Fließsträngen aufzuteilen, die dann in das Eintrittsende des Mischers eintreten, um den Mischvorgang zu beschleunigen.In order to be able to form the mixer to be screwed onto the mouthpiece arrangement of the two-component cartridge as short as possible and with as few mixing elements as possible, it is endeavored to divide the two material components already in the mouthpiece arrangement into a plurality of flow strands, which then enter the inlet end of the mixer in order to effect the mixing process to accelerate.

Zu diesem Zweck ist es aus der WO 2005/095225 A1 bekannt, eine aus zwei koaxial angeordneten Rohrkörpern bestehende Zweikomponentenkartusche im Bereich der ineinandergesteckten Mundstücke der beiden Rohrkörper so auszubilden, dass eine Aufteilung sowohl der aus der ersten Kammer austretenden ersten Materialkomponente als auch der aus der zweiten Kammer austretenden zweiten Materialkomponente in mehrere Materialstränge erfolgt, wobei alle Materialstränge in der Auslaufmundstückanordnung eine kranzartige Anordnung bilden, in der die Materialstränge der ersten Materialkomponente und der zweiten Materialkomponente miteinander abwechselnd angeordnet sind.For this purpose it is from the WO 2005/095225 A1 known to form a consisting of two coaxially arranged tubular bodies two-component cartridge in the nested mouthpieces of the two tubular body so that a division of both the emerging from the first chamber first material component as well as emerging from the second chamber second material component into several strands of material, all Material strands in the outlet mouthpiece assembly form a coronary arrangement in which the strands of material of the first material component and the second material component are arranged alternately with each other.

Dazu ist der Mundstückteil des inneren Rohrkörpers, der in den Mundstückteil des äußeren Rohrkörpers eingesteckt ist, mit einer kranzartigen Anordnung separater segmentförmiger oder zylindrischer Austrittskanäle ausgebildet, die sternartig im Mundstückteil des äußeren Rohrkörpers sitzen, wobei die umfangsmäßigen Zwischenräume zwischen den einzelnen Austrittskanälen des Mundstückteils des inneren Rohrkörpers, welche die Auslaufkanäle für die erste Materialkomponente bilden, die Auslaufkanäle für die zweite Materialkomponente bilden. Die in Umfangsrichtung miteinander abwechselnden Materialstränge der ersten Materialkomponente und der zweiten Materialkomponente treten dann als paralleles Strangbündel in das Eintrittsende des Mischers ein.For this purpose, the mouthpiece portion of the inner tube body, which is inserted into the mouthpiece portion of the outer tube body, formed with a coronary arrangement of separate segmental or cylindrical outlet channels which sit like a star in the mouthpiece part of the outer tubular body, wherein the circumferential spaces between the individual outlet channels of the mouthpiece part of the inner Pipe body, which form the outlet channels for the first material component, forming the outlet channels for the second material component. The material strands of the first material component and the second material component which alternate in the circumferential direction then enter into the inlet end of the mixer as a parallel strand bundle.

Bei dieser bekannten Anordnung ist nachteilig, dass die Materialstränge der ersten Materialkomponente und der zweiten Materialkomponente genau parallel in das Einlassende des Mischers einströmen, weil sie über die ganze Länge der Mundstückanordnung durch die dort gebildeten Auslaufkanäle parallel geführt werden, so dass mangels irgendeiner vorhandenen Querströmungskomponente in den Materialsträngen die Mischung erst durch das erste Mischelement im Mischer eingeleitet wird.In this known arrangement is disadvantageous that the strands of material of the first material component and the second material component to flow exactly parallel into the inlet end of the mixer, because they are guided parallel over the entire length of the mouthpiece assembly through the outlet channels formed there, so that in the absence of any existing crossflow component in the material strands, the mixture is first introduced through the first mixing element in the mixer.

Aufgabe der Erfindung ist es, eine Anordnung zu schaffen, die hinsichtlich dieses Problems eine deutliche Verbesserung bringt.The object of the invention is to provide an arrangement which brings a significant improvement in this problem.

Ein weiterer Nachteil der oben angesprochenen bekannten Ordnung liegt darin, daß die Verschlusskappe jeden der Auslaufkanäle des Mundstückteils des inneren Rohrkörpers einzeln verschließen muß und dazu einen in den jeweiligen Auslaufkanal eingreifenden und dicht schließenden Zapfen haben muß. Dabei ist die Dichtigkeit selbst bei einem Kranz von zylindrischen Zapfen für zylindrische Auslaufkanäle nur schwer zu erreichen, und bei im Querschnitt ringsegmentförmigen Austrittskanälen noch bedeutend schwerer zu erreichen. In jedem Fall muß die Verschlusskappe zweiteilig ausgebildet sein und einen inneren Stopfenteil haben, an dem die in die Auslaufkanäle eingreifenden Verschlusszapfen gebildet sind, und eine Schraubhülse haben, die auf den Mundstückhals des äußeren Rohrkörpers aufschraubbar ist.Another disadvantage of the above-mentioned known order is that the closure cap must individually close each of the outlet channels of the mouthpiece portion of the inner tube body and to have an engaging in the respective outlet channel and tightly closing pin must have. The tightness is difficult to achieve even with a wreath of cylindrical pin for cylindrical outlet channels, and still significantly more difficult to achieve in cross-sectionally annular outlet channels. In any case, the closure cap must be formed in two parts and have an inner plug part, on which the locking channels engaging in the outlet channels are formed, and have a threaded sleeve which is screwed onto the mouthpiece neck of the outer tubular body.

Vorzugsweise sollte die Erfindung in weiterer Ausgestaltung auch dieses weitere Problem beheben können.Preferably, the invention should be able to remedy this further problem in a further embodiment.

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

Die erfindungsgemäße Anordnung besteht im wesentlichen darin, dass sich ein einziger, etwa zylindrischer Auslaufkanal des Mundstückteils des inneren Rohrkörpers erst an seinem Austrittsende in Gestalt einer kranzartigen Anordnung von mehreren auswärts divergierenden taschenartigen Erweiterungen erweitert, die in den Lichtquerschnitt des ringförmig um diesen Auslaufkanal für die erste Materialkomponente verlaufenden Auslaufkanal für die zweite Materialkomponente im Mundstückteil des äußeren Rohrkörpers hineinverlaufen.The arrangement according to the invention consists essentially in that a single, approximately cylindrical outlet channel of the mouthpiece part of the inner tubular body extends only at its outlet end in the form of a coronary arrangement of several outwardly diverging pocket-like extensions in the light cross section of the annular to this outlet channel for the first Material component extending outlet channel for the second material component in the mouthpiece part of the outer tube body.

Dem Zentralbereich des dem inneren Rohrkörper zugeordneten Mundstückteils im Bereich von dessen Austrittsquerschnitt ist eine Prallplatte zugeordnet, die den Zentralbereich etwa über einen der Querschnittsfläche des zylindrischen Auslaufkanals entsprechenden Flächenbereich verdeckt, so daß das aus dem Innenraum des ersten Rohrkörpers austretende Material der ersten Materialkomponente gezwungen wird, an der Prallplatte vorbei radial auswärts in die taschenartigen Erweiterungen des Auslaufkanals zu strömen und dadurch eine Mehrzahl von Materialsträngen bildet, die mit einer Axialkomponente und einer radial auswärts divergierenden Richtungskomponente aus den Taschenartigen Erweiterungen austreten.The central region of the mouthpiece part associated with the inner tubular body in the region of its outlet cross section is assigned a baffle plate which covers the central region approximately over a surface area corresponding to the cross sectional area of the cylindrical outlet channel, so that the material of the first material component emerging from the interior of the first tubular body is forced. past the baffle plate radially outward into the pocket-like extensions of the outlet channel, thereby forming a plurality of strands of material exiting the pocket-like extensions with an axial component and a radially outwardly diverging directional component.

Bei einer ersten Ausführungsform der Erfindung ist die Prallplatte durch einen dem Mischer zugeordneten und an dessen Eintrittsende vor dem ersten Mischelement angeordneten Zentralkörper gebildet, der knaufartig geformt sein kann und vorzugsweise mit einer entgegen der Materialströmungsrichtung weisenden Ablenkspitze ausgebildet ist, und der, wenn der Mischer auf die Mundstückanordnung aufgesetzt ist, in das Auslaufende des Auslaufkanals für die erste Materialkomponente aus dem Innenraum des ersten Rohrkörpers hineinragt. Bei dieser Ausführungsform kann die Verschlusskappe sehr einfach ausgebildet sein. Sie braucht lediglich einen zentralen Zapfen zu haben, der bis in den zylindrischen Auslaufkanal des Mundstückteils des inneren Rohrkörpers hineinragt und einen diesen verschließenden Stopfen bildet. Damit läßt sich eine zuverlässige Abdichtung sehr einfach erreichen.In a first embodiment of the invention, the baffle plate is formed by a central body associated with the mixer and disposed at the inlet end in front of the first mixing element, which may be knob-shaped and is preferably formed with a deflecting tip pointing counter to the material flow direction, and the mixer the mouthpiece assembly is placed, projects into the outlet end of the outlet channel for the first material component from the interior of the first tubular body. In this embodiment, the cap can be made very simple. It only needs to have a central pin, which projects into the cylindrical outlet channel of the mouthpiece part of the inner tubular body and a forms this occluding stopper. Thus, a reliable seal can be achieved very easily.

Bei einer zweiten Ausführungsform ist die Prallplatte einteilig mit dem Mundstückteil ausgebildet und mittels von der Innenwand dieses Auslaufkanals ausgehenden, rippen- oder stegartig oder auf ähnliche Weise ausgebildeter Stützelemente mit dem Mundstückteil verbunden. Dabei sind die Verbindungselemente vorteilhafterweise so weit stromauf mit der Innenwand des zylindrischen Auslaufkanals verbunden, daß stromabseitig noch ein ausreichend langer axialer zylindrischer oder leicht konischer Abschnitt des Auslaufkanals verbleibt, in welchen eine an der Verschlusskappe gebildeter Hohlzapfen eintauchen kann, der als Stopfen wirkt und über die Prallplatte schiebbar ist.In a second embodiment, the baffle plate is integrally formed with the mouthpiece part and connected by means of the inner wall of this outlet channel outgoing, rib-like or web-like or similarly formed support elements with the mouthpiece part. The connecting elements are advantageously so far upstream connected to the inner wall of the cylindrical outlet channel, that downstream still a sufficiently long axial cylindrical or slightly conical portion of the outlet channel remains, in which a hollow cap formed on the cap can dip, which acts as a plug and on the Baffle plate is pushed.

Die durch den ringförmigen Ausströmkanal zwischen den Mundstückteilen des inneren Rohrkörpers und des äußeren Rohrkörpers ausströmende zweite Materialkomponente wird durch die Strömungshindernisse, welche durch die taschenartigen Erweiterungen des Austrittskanals der ersten Materialkomponente gebildet sind, ebenfalls in mehrere Materialstränge aufgeteilt, die in Umfangsrichtung abwechselnd mit den durch die taschenartigen Erweiterungen austretenden Materialsträngen der ersten Materialkomponente angeordnet sind. Durch diese Strömunsgablenkung der zweiten Materialkomponente durch die taschenartigen Erweiterungen des inneren Austrittskanals für die erste Materialkomponente erfährt die zweite Materialkomponente aber eine jeweils seitliche Strömungsablenkung, weshalb die Materialstränge der zweiten Materialkomponente mit Umfangsrichtungskomponenten behaftet sind und dadurch sogleich eine Vermischung mit den Materialsträngen der ersten Materialkomponente stattfindet, noch bevor die Materialstränge das erste Mischelement im Mischrohr des Mischers erreichen.The flowing through the annular outflow between the mouthpiece parts of the inner tube body and the outer tube body second material component is also divided by the flow obstacles, which are formed by the pocket-like extensions of the outlet channel of the first material component in several strands of material alternately in the circumferential direction with those through the pocket-like expansions emerging material strands of the first material component are arranged. As a result of this flow deflection of the second material component through the pocket-like extensions of the inner outlet channel for the first material component, however, the second material component experiences a respective lateral flow deflection, which is why the material strands of the second material component are affixed with circumferential direction components, thereby immediately mixing with the material strands of the first material component. even before the strands of material reach the first mixing element in the mixing tube of the mixer.

Die erfindungsgemäße Anordnung ermöglicht eine deutliche Reduzierung der Anzahl der Mischelemente im Mischrohr des Mischers zur Erzielung einer homogenen Vermischung der beiden Materialkomponenten und eine ganz erhebliche Reduzierung des notwendigen Auspressdrucks. Dies beruht auf folgenden Vorteilen:

  • Innerhalb der Mundstückanordnung strömen sowohl die erste Materialkomponente als auch die zweite Materialkomponente durch große gleich bleibende Öffnungsquerschnitte, bis zu der Stelle, an welcher sich der innere Austrittskanal für die erste Materialkomponente in Gestalt der kranzartig angeordneten taschenartigen Erweiterungen in den ringförmigen Strömungskanal für die zweite Materialkomponente erweitert. Dort verengt sich durch den knaufartigen Zentralkörper im Eintrittsbereich des Mischers der Gesamtströmungsquerschnitt etwas, wodurch sich eine Intensivierung der Vorvermischung aufgrund der nicht nur axialen Richtungskomponenten, sondern auch der vorhandenen Umfangsrichtungskomponenten der Strömungen einstellt. Dieser Bereich der Querschnittsverminderung ist allerdings axial sehr kurz, weshalb auch der dadurch induzierte Strömungswiderstand niedrig ist. Der nachfolgende Mischvorgang bis zum Erreichen einer homogenen Mischung der beiden Materialkomponenten erfordert dann nur noch eine relativ geringe Anzahl von Mischelementen im Mischrohr.
The inventive arrangement allows a significant reduction in the number of mixing elements in the mixing tube of the mixer to achieve a homogeneous mixing of the two material components and a very significant reduction of the necessary extrusion pressure. This is due to the following advantages:
  • Within the mouthpiece arrangement, both the first material component and the second material component flow through large, uniform opening cross-sections, to the point at which the inner outlet channel for the first material component widens in the form of the coronally arranged pocket-like extensions in the annular flow channel for the second material component. There narrowed by the knob-like central body in the inlet region of the mixer, the total flow area something, which sets an intensification of the premixing due to the not only axial direction components, but also the existing circumferential direction components of the currents. However, this area of the cross-sectional reduction is axially very short, which is why the flow resistance induced thereby is low. The subsequent mixing process until reaching a homogeneous mixture of the two material components then only requires a relatively small number of mixing elements in the mixing tube.

Die Erfindung bringt damit einen ganz erheblichen Vorteil im Hinblick auf die Effizienz der durch Mischung der beiden Materialkomponenten, der Anzahl der erforderlichen Mischelemente im Mischrohr, und folglich eine sehr deutliche Reduzierung des notwendigen Auspressdrucks, was besonders bei zähfließenden Massen einen großen Vorteil bringt.The invention thus brings a very significant advantage in terms of the efficiency of mixing the two material components, the number of mixing elements required in the mixing tube, and consequently a very significant reduction of the necessary extrusion pressure, which brings a great advantage especially for viscous masses.

Außerdem vereinfacht die erfindungsgemäße Anordnung die Ausbildung der Verschlusskappe und deren Abdichtungssicherheit ganz erheblich. Weil der innere Austrittskanal für die erste Materialkomponente zylindrisch und zentrisch angeordnet ist und nur ein solcher Kanal vorhanden ist, kann die Verschlusskappe einteilig ausgebildet sein und einen einzigen mittigen Stopfen haben, der in den zylindrischen Teil des Austrittskanals für die erste Materialkomponente eingreift und diesen absolut dicht verschließt.In addition, the arrangement according to the invention greatly simplifies the design of the closure cap and its sealing safety. Because the inner exit channel for the first material component is cylindrical and centered and only one such channel is present, the closure cap may be integrally formed and have a single central plug which engages the cylindrical portion of the exit channel for the first material component and this is completely sealed closes.

Zwei Ausführungsbeispiele der Erfindung sind in den anliegenden Zeichnungen dargestellt und wird im folgenden mehr im einzelnen beschrieben. In den Zeichnungen zeigt:

Fig. 1
einen Axialschnitt durch den Mundstück- bereich einer Zweikomponentenkartusche und einen aufgesetzten Mischer mit einem Misch- system nach einem ersten Ausfiihrungsbei- spiel der Erfindung,
Fig. 2
eine perspektivische Ansicht des Innenrohr- körpers mit seinem Mundstückbereich der in Fig. 1 gezeigten Zweikomponentenkar- tusche,
Fig. 3
eine vergrößerte perspektivische Darstellung der Einzelheit III in Fig. 2,
Fig. 4
einen Axialschnitt durch den Mundstück- bereich der in Fig. 1 dargestellten Zweikompo- nentenkartusche, jedoch mit aufgesetzter Ver- schlußkappe,
Fig. 5
einen Axialschnitt durch den Mundstück- bereich einer Zweikomponentenkartusche und einen aufgesetzten Mischer mit einem Misch- system nach einem zweiten Ausführungsbei- spiel der Erfindung, und
Fig. 6
einen Axialschnitt durch den Auslaufmund- Stückbereich der Zweikomponentenkartusche nach Fig. 5 ohne aufgesetzten Mischer.
Two embodiments of the invention are illustrated in the accompanying drawings and will be described in more detail below. In the drawings shows:
Fig. 1
3 shows an axial section through the mouthpiece area of a two-component cartridge and an attached mixer with a mixing system according to a first embodiment of the invention,
Fig. 2
a perspective view of the Innenrohr- body with its mouthpiece portion of in Fig. 1 shown two-component cartridge,
Fig. 3
an enlarged perspective view of the detail III in Fig. 2 .
Fig. 4
an axial section through the mouthpiece area of in Fig. 1 shown two-component cartridge, but with attached cap,
Fig. 5
an axial section through the mouthpiece area of a two-component cartridge and a mounted mixer with a mixing system according to a second embodiment of the invention, and
Fig. 6
an axial section through the outlet mouth piece area of the two-component cartridge according to Fig. 5 without attached mixer.

Die Fig. 1 und 4 zeigen als erste Ausführungsform jeweils im Axialschnitt den mundstückseitigen Endbereich einer Zweikomponentenkartusche. Die Zweikomponentenkartusche nach den Fig. 1 und 4 besteht aus einem äußeren Rohrkörper 1 mit einer vorderen Stirnwand 2 und einem Mundstückteil 3, der mit einem Außengewinde 4 versehen ist, und einem inneren Rohrkörper 5 mit einem Mundstückteil 6. Der innere Rohrkörper 5 ist koaxial im äußeren Rohrkörper angeordnet, indem der Mundstückteil 6 des inneren Rohrkörpers 5 in den Mundstückteil 3 des äußeren Rohrkörpers 1 eingesteckt und dort verrastet ist. Der innere Rohrkörper 5 bildet mit seinem Innenraum 7 eine erste Kammer zur Aufnahme einer ersten Materialkomponente, und der äußere Rohrkörper 1 bildet zwischen sich und dem inneren Rohrkörper 5 eine ringförmige zweite Kammer 8 zur Aufnahme einer zweiten Materialkomponente.The Fig. 1 and 4 show as the first embodiment in each case in axial section the mouthpiece-side end region of a two-component cartridge. The two-component cartridge after the Fig. 1 and 4 consists of an outer tube body 1 with a front end wall 2 and a mouthpiece part 3, which is provided with an external thread 4, and an inner tube body 5 with a mouthpiece part 6. The inner tube body 5 is arranged coaxially in the outer tube body by the mouthpiece part 6 of inner tubular body 5 is inserted into the mouthpiece part 3 of the outer tubular body 1 and locked there. The inner tubular body 5 forms with its inner space 7 a first chamber for receiving a first material component, and the outer tubular body 1 forms between itself and the inner tube body 5, an annular second chamber 8 for receiving a second material component.

Der Mundstückteil 6 des inneren Rohrkörpers 5 bildet einen zylindrischen Austrittskanal 9 für die erste Materialkomponente, und der Mundstückteil 3 des äußeren Rohrkörpers 1 bildet zwischen sich und dem Mundstückteil 6 des inneren Rohrkörpers 5 einen ringförmigen Austrittskanal 10 für die zweite Materialkomponente. Es versteht sich, dass der axial rückwärtige, im Mundstückteil 3 des äußeren Rohrkörpers 1 verrastete Abschnitt des Mundstückteils 6 des inneren Rohrkörpers 5 entlang seines Umfangs mehrere Durchtrittskanäle zur Verbindung der ringförmigen zweiten Kammer 8 mit dem ringförmigen Austrittskanal 10 aufweist, die in den Zeichnungsfiguren 1 und 4 nicht sichtbar sind, weil der dortige Schnitt durch die Verrastungsrippen 11 des Mundstückteils 6 des inneren Rohrkörpers 5 verläuft.The mouthpiece part 6 of the inner tube body 5 forms a cylindrical outlet channel 9 for the first material component, and the mouthpiece part 3 of the outer tube body 1 forms between it and the mouthpiece part 6 of the inner tube body 5 an annular outlet channel 10 for the second material component. It is understood that the axially rear, latched in the mouthpiece part 3 of the outer tubular body 1 portion of the mouthpiece part 6 of the inner tubular body 5 has along its circumference a plurality of passageways for connecting the annular second chamber 8 with the annular outlet channel 10, which in the drawing figures 1 and 4 are not visible, because the local section passes through the Verrastungsrippen 11 of the mouthpiece part 6 of the inner tube body 5.

Die Fig. 1 und 4 unterscheiden sich dadurch, dass in Fig. 1 ein Mischer 12 auf die Mundstückanordnung aufgeschraubt ist, während in Fig. 4 eine Verschlusskappe 13 auf die Mundstückanordnung aufgeschraubt ist.The Fig. 1 and 4 differ in that in Fig. 1 a mixer 12 is screwed onto the mouthpiece assembly while in Fig. 4 a cap 13 is screwed onto the mouthpiece assembly.

Der Mischer 12 weist ein Mischrohr 14 auf, das an seinem eintrittsseitigen Ende zu einer Schraubhülse 15 erweitert ist, die auf das Außengewinde 4 des Mundstückteils 3 des äußeren Rohrkörpers 1 aufschraubbar ist, und nimmt im Mischrohr 14 eine Anzahl von axial aufeinanderfolgenden, an sich bekannten Mischelementen 16 auf, welche die Materialstränge immer wieder verdrehen und aufteilen und so die Durchmischung bewirken.The mixer 12 has a mixing tube 14, which is widened at its inlet end to a threaded sleeve 15 which is screwed onto the external thread 4 of the mouthpiece part 3 of the outer tubular body 1, and takes in the mixing tube 14 a number of axially successive, known per se Mixing elements 16, which rotate and divide the strands of material again and again, thus causing the mixing.

Fig. 3 zeigt in perspektivischer Ansicht den vorderen Endbereich des inneren Rohrkörpers 5 mit seinem Mundstückteil 6. In dieser Darstellung sind auch die Verrastungsrippen 11 sowie die zwischen diesen umfangsmäßig gebildeten Durchtrittskanäle 17 im einzelnen sichtbar, welche die zweite Kammer 8 mit dem ringförmigen Austrittskanal 10 verbinden. Fig. 3 shows in perspective view the front end portion of the inner tube body 5 with its mouthpiece part 6. In this illustration, the Verrastungsrippen 11 and the circumferentially formed between these passageways 17 are visible in detail, which connect the second chamber 8 with the annular outlet channel 10.

Die in Fig. 2 und in der die Einzelheit III in Fig. 2 vergrößert zeigende Fig. 3 zeigen, erweitert sich das Ende des zylindrischen Austrittskanals 9 des Mundstückteils 6 des inneren Rohrkörpers 5 in seinem Austrittsendbereich in Gestalt von vier kreuzförmig bzw. sternförmig angeordneten taschenartigen Erweiterungen 18, die radial auswärts divergieren und, wie aus den Fig. 1 und 4 im Schnitt sichtbar ist, in den Austrittsquerschnitt des ringförmigen Austrittskanals 10 zwischen den Mundstückteilen 3 und 6 des äußeren Rohrkörpers 1 und des inneren Rohrkörpers 5 hineinverlaufen.In the Fig. 2 and in the detail III in Fig. 2 enlarged pointing Fig. 3 show, the end of the cylindrical outlet channel 9 of the mouthpiece part 6 of the inner tubular body 5 widens in its outlet end region in the form of four cross-shaped or star-shaped pocket-like extensions 18 which diverge radially outward and like from the Fig. 1 and 4 is visible in section, in the outlet cross-section of the annular outlet channel 10 between the mouthpiece parts 3 and 6 of the outer tubular body 1 and the inner tubular body 5 in running.

Wie aus Fig. 1 ersichtlich ist, hat der aus den Mischelementen 16 des Mischers 12 bestehende Mischereinsatz an seinem unteren, also eintrittsseitigen Ende einen mittigen Zapfen 19, der in einem knaufartigen Zentralkörper 20 endigt, der eine Prallplatte bildet und, wenn der Mischer 12 auf die Mundstückanordnung 3, 6 aufgesetzt ist, in das Auslaufende des inneren zylindrischen Austrittskanals 9 hineinragt und dessen Mittenbereich verschließt, so dass die aus diesem Austrittskanal 9 austretende erste Materialkomponente in vier schräg radial und axial durch die taschenartigen Erweiterungen 18 strömende Materialstränge aufgeteilt wird. Der Zentralkörper 20 hat dabei vorzugsweise, wie dargestellt, eine stromaufwärts weisende Ablenkspitze 21, die, wie dargestellt, als etwa zylindrischer und abgerundeter Zapfen oder auch kegelig ausgebildet sein kann.How out Fig. 1 It can be seen that the mixer insert 16 consisting of the mixing elements 16 of the mixer 12 has at its lower, ie inlet end a central pin 19 which terminates in a knob-like central body 20 which forms a baffle plate and, when the mixer 12 to the mouthpiece assembly 3, the sixth is placed, protrudes into the outlet end of the inner cylindrical outlet channel 9 and the center region closes, so that the emerging from this outlet channel 9 first material component is divided into four obliquely radially and axially through the pocket-like extensions 18 flowing material strands. The central body 20 preferably has, as shown, an upstream pointing Ablenkspitze 21, which, as shown, may be formed as an approximately cylindrical and rounded pin or conical.

Die aus den ringförmigen Austrittskanal 10 austretende zweite Materialkomponente wird dann durch die taschenartigen Erweiterungen 18 des Austrittskanals 9 ebenfalls in mehrere Materialstränge aufgeteilt, die zwischen den Materialsträngen der ersten Materialkomponente verlaufen und durch die jeweils in Umfangsrichtung erfolgende seitwärtige Ablenkung durch die taschenartigen Erweiterungen 18 eine Querrichtungskomponente erhalten, was die sofortige Durchmischung mit den Materialsträngen der ersten Materialkomponente begünstigt.The emerging from the annular outlet channel 10 second material component is then also divided by the pocket-like extensions 18 of the outlet channel 9 in several strands of material extending between the strands of material of the first material component and obtained by each taking place in the circumferential direction seitwärtige deflection through the pocket-like extensions 18 a cross-directional component , which favors the immediate mixing with the material strands of the first material component.

Fig. 1 zeigt den mundstückseitigen Endbereich der Zweikomponentenkartusche mit der aufgesetzten Verschlusskappe 13. Diese besteht aus einem Stück und hat an ihrer Stirnwand 22 einen angeformten zylindrischen Hohlzapfen 23, dessen axiale Länge so bemessen ist, dass er beim Aufschrauben der Verschlusskappe 13 auf das Außengewinde 4 des Mundstückteils 3 des äußeren Rohrkörpers 1 in den zylindrischen Teil des Austrittskanals 9 des Mundstückteils 6 des inneren Rohrkörpers 5 eingreift und diesen abdichtend verschließt. Fig. 1 This consists of one piece and has on its end wall 22 a molded cylindrical hollow pin 23 whose axial length is dimensioned so that when screwing the cap 13 on the external thread 4 of the mouthpiece part. 3 of the outer tubular body 1 engages in the cylindrical part of the outlet channel 9 of the mouthpiece part 6 of the inner tubular body 5 and sealingly seals it.

Bei der in den Fig. 1 bis 4 gezeigten ersten Ausführungsform der Erfindung ist die Prallplatte, die durch den Zentralkörper 20 am eintrittseitigen Mischerende gebildet ist, separat von der Mundstückanordnung 3, 6 ausgebildet und kommt erst durch das Aufsetzen des Mischers mit dem Mundstückteil 3 in Zusammenwirkung.In the in the Fig. 1 to 4 the first embodiment of the invention shown, the baffle plate, which is formed by the central body 20 at the inlet end of the mixer end, separately formed by the mouthpiece assembly 3, 6 and comes only by the placement of the mixer with the mouthpiece part 3 in cooperation.

Die Fig. 5 und 6 zeigen eine zweite Ausführungsform der Erfindung, die sich dadurch von der ersten Ausführungsform unterscheidet, dass die Prallplatte als Bestandteil des Mundstückteils ausgebildet ist.The Fig. 5 and 6 show a second embodiment of the invention, which differs from the first embodiment in that the baffle plate is formed as part of the mouthpiece part.

In den Fig. 4 und 5 sind gleiche oder entsprechende Elemente mit den gleichen Bezugszeichen wie in den Fig. 1 bis 4 versehen, und entsprechende, aber abgewandelte Elemente sind ebenfalls mit gleichen Bezugszeichen, aber mit einem Zusatz versehen.In the Fig. 4 and 5 are the same or corresponding elements with the same reference numerals as in the Fig. 1 to 4 provided, and corresponding but modified elements are also provided with the same reference numerals, but with an addition.

Fig. 5 zeigt den mundstückseitigen Endbereich einer Zweikomponentenkartusche mit äußerem Rohrkörper 1 und innerem Rohrkörper 5 mit aufgesetztem Mischer, während Fig. 6 den Endbereich ohne aufgesetzten Mischer zeigt. Der äußere Rohrkörper 1 mit einer vorderen Stirnwand 2 und einem Mundstückteil 3, der mit Außengewinde 4 versehen ist, und der innere Rohrkörper 5 mit seinem Mundstückteil 6 entsprechend der Anordnung nach den Fig. 1 bis 4. Dies gilt auch für die Ausbildung des Mundstückteils 6 des inneren Rohrkörpers 5, der einen zylindrischen Austrittskanal 9 für die erste Materialkomponente bildet, der sich am Ende des zylindrischen Austrittskanals 9 in seinem Austrittsendbereich in Gestalt von vier kreuzförmig bzw. sternförmig angeordneten taschenartigen Erweiterungen 18 erweitert, die radial auswärts divergieren und in den Austrittsquerschnitt des ringförmigen Austrittskanals 10 zwischen den Mundstückteilen 3 und 6 des äußeren Rohrkörpers 1 und des inneren Rohrkörpers 5 hineinverlaufen. Fig. 5 shows the mouthpiece side end portion of a two-component cartridge with outer tube body 1 and inner tube body 5 with mounted mixer, while Fig. 6 the end area without patch mixer shows. The outer tubular body 1 with a front end wall 2 and a mouthpiece part 3, which is provided with external thread 4, and the inner tubular body 5 with its mouthpiece part 6 according to the arrangement of the Fig. 1 to 4 , This also applies to the design of the mouthpiece part 6 of the inner tubular body 5, which forms a cylindrical outlet channel 9 for the first material component, which widens at the end of the cylindrical outlet channel 9 in its outlet end region in the form of four cross-shaped or star-shaped pocket-like extensions 18, which diverge radially outward and in the outlet cross-section of the annular outlet channel 10 between the mouthpiece parts 3 and 6 of the outer tubular body 1 and the inner tubular body 5 in running.

Ebenso ist der Mischer 12 entsprechend dem in Fig. 4 gezeigten Mischer ausgebildet.Likewise, the mixer 12 is according to the in Fig. 4 formed mixer shown.

Ein Unterschied zur Ausführungsform nach den Fig. 1 bis 4 besteht bei dem Mischer 12 aber darin, dass am eintrittsseitigen Ende des Mischers der in Fig. 4 gezeigte Zapfen 19 mit dem die Prallplatte bildenden Zentralkörper 20 fehlt.A difference from the embodiment according to the Fig. 1 to 4 consists in the mixer 12 but in that at the inlet end of the mixer, the in Fig. 4 shown pin 19 with the baffle plate forming the central body 20 is missing.

Statt dessen ist bei der Ausführungsform nach den Fig. 5 und 6 eine Prallplatte 20a im Austrittsendbereich des inneren Mundstückteils 6 angeordnet und durch Stege 19a mit der Innenwand des Mundstückteils 6 verbunden. Die Prallplatte 20a ist also einstückig mit dem inneren Mundstückteil 6 ausgebildet.Instead, in the embodiment according to the Fig. 5 and 6 a baffle plate 20 a arranged in the outlet end region of the inner mouthpiece part 6 and by webs 19 a with the Inner wall of the mouthpiece part 6 connected. The baffle plate 20a is thus formed integrally with the inner mouthpiece part 6.

Die Verbindung der Stege 19a mit der Innenwand des Mundstückteils 6 erfolgt aber erst an einer um eine gewisse Axialdistanz vom Ende des zylindrischen Teils des Austrittskanals 9 stromaufwärts versetzten Stelle und diese Stelle ist stromab dieser Verbindungsstelle radial einwärts so zurückgesetzt, dass ein kurzer axialer zylindrischer Endabschnitt 9a des Austrittskanals 9 entsteht, in welchen eine zylindrische Ringhülse an einer Verschlusskappe eintauchen und damit abdichtend zusammenwirken kann. Wie man aus den Zeichnungen sieht, ist der Durchmesser der Prallplatte 20a etwas kleiner als der Lichtquerschnitt des zylindrischen Austrittskanals 9, so dass ein solcher hohlzylindrischer Ringansatz einer Verschlusskappe sich über die Prallplatte 20a schieben und dadurch in Zusammenwirkung mit dem Endabschnitt 9a des Austrittskanals kommen kann.However, the connection of the webs 19a with the inner wall of the mouthpiece part 6 takes place only at a certain axial distance from the end of the cylindrical portion of the outlet channel 9 upstream offset position and this point is downstream of this joint radially inwardly reset so that a short axial cylindrical end portion 9a of the outlet channel 9 is formed, in which a cylindrical annular sleeve can be immersed on a closure cap and thus can cooperate sealingly. As can be seen from the drawings, the diameter of the baffle plate 20a is slightly smaller than the light cross section of the cylindrical outlet channel 9, so that such a hollow cylindrical annular projection of a closure cap can slide over the baffle plate 20a and thereby come into cooperation with the end portion 9a of the outlet channel.

Eine weitere Möglichkeit der Modifikation der Erfindung, die allerdings nicht zeichnerisch dargestellt ist, die aber im wesentlichen der Ausführungsform nach den Fig. 5 und 6 entspricht, wäre eine rastbare Verbindung zwischen der am inneren Mundstückteil 6 angeordneten Prallplatte 20a über entsprechend modifizierte Verbindungsstege 19a und in der Innenwand des Mundstückteils 6 vorgesehene Gegenelemente, beispielsweise in Gestalt einer radialen Abstufung. Die Prallplatte 20a mit den Verbindungsstegen 19a müsste dann separat gefertigt und anschließend eingesteckt und eingerastet werden. Während eine solche Ausführungsform grundsätzlich möglich ist, wird gegenwärtig die in den Fig. 5 und 6 dargestellte einstückige Ausführungsform favorisiert, weil sie fertigungstechnisch günstiger zu realisieren ist und nicht die Gefahr in sich birgt, dass durch den Materialdruck auf die Prallplatte diese bei möglicherweise fehlerhafter Einrastung herausgedrückt werden könnte.Another possibility of modification of the invention, which is not shown in the drawing, but essentially the embodiment of the Fig. 5 and 6 corresponds, would be a snap connection between the arranged on the inner mouthpiece part 6 baffle plate 20a via correspondingly modified connecting webs 19a and provided in the inner wall of the mouthpiece part 6 counter-elements, for example in the form of a radial gradation. The baffle plate 20a with the connecting webs 19a would then have to be manufactured separately and then inserted and locked. While such an embodiment is basically possible, currently in the Fig. 5 and 6 presented one-piece embodiment favors because it is less expensive to implement manufacturing technology and does not involve the risk that the material pressure on the baffle plate this could be pushed out at possibly incorrect latching.

Claims (9)

  1. Mixing system for two-component cartridges for plastic masses, wherein the two-component cartridge (1, 5) has a mouthpiece arrangement (3, 6) with an inner mouthpiece section (6) and an outer mouthpiece section (3), the inner mouthpiece section (6) forming an inner, substantially cylindrical outlet channel (9) for a first material component from a first chamber (7), and the outer mouthpiece section (3) defining between itself and the inner mouthpiece section (6) an annular outlet channel (10) for a second material component from a second chamber (8), and wherein a mixer (12) having a mixing tube (14) is mountable onto the mouthpiece arrangement, in which a plurality of mixing elements (16) is arranged following one another in the axial direction, and wherein the mouthpiece arrangement has means (18) for dividing the materials flows of the first material component and the second material component into a number of material strings from the first and second material component arranged alternating with one another in the shape of a wreath,
    characterised in that the inner outlet channel (9) is enlarged, in its end area on the outlet side, into the annular outer outlet channel (10) by pocket-shaped extensions (18) arranged in the shape of star, and in that a baffle plate (20, 20a) is associated with the inner outlet channel (9), the baffle plate being arranged in the area of the discharge opening of the inner outlet channel (9) and closing off the central area of the same, at least when the mixer (12) is mounted.
  2. Mixing system according to claim 1, wherein the baffle plate (20) is formed by a central body arranged in the end area of the mixer (12) on the input side, the central body closing off the central area of the inner outlet channel (9) when the mixer (12) is mounted onto the mouthpiece arrangement (3, 6).
  3. Mixing system according to claim 2, wherein the central body forming the baffle plate (20) is connected to the first mixing element (16) of the plurality of mixing elements in the mixing tube (14) by means of a central pin (19).
  4. Mixing system according to claim 2 or 3, wherein the central body forming the baffle plate (20) is configured substantially in the shape of a knob.
  5. Mixing system according to claim 1, wherein the baffle plate (20a) is connected to the inner mouthpiece section (6).
  6. Mixing system according to claim 5, wherein the baffle plate (20) is connected to the inner wall of the inner outlet channel (9) in one piece by means of supporting elements (19a).
  7. Mixing system according to claim 5, wherein the baffle plate (20a) is connected to the wall of the inner outlet channel (9) in a lockable manner by means of supporting elements projecting into the inner outlet channel (9).
  8. Mixing system according to claim 6 or 7, wherein the connection or locking engagement of the supporting elements (19a) of the baffle plate (20a) with the inner wall of the inner outlet channel (9) is located in a certain axial distance upstream of the downstream end of the substantially cylindrical inner outlet channel (9), and wherein the outer diameter of the baffle plate (20a) is somewhat smaller than the inner diameter of the inner outlet channel (9).
  9. Mixing system according to any one of claims 1 to 8, wherein the pocket-shaped extensions (18) extend into the annular outer outlet channel (10) in an axially and radially diverging manner.
EP10005821A 2009-06-05 2010-06-04 Mixing system for dual component cartridges Active EP2258468B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10005821A EP2258468B1 (en) 2009-06-05 2010-06-04 Mixing system for dual component cartridges

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202009007919U DE202009007919U1 (en) 2009-06-05 2009-06-05 Mixing system for two-component cartridge
EP09007452A EP2258466A1 (en) 2009-06-05 2009-06-05 Mixing system for dual component cartridges
EP10005821A EP2258468B1 (en) 2009-06-05 2010-06-04 Mixing system for dual component cartridges

Publications (2)

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EP2258468A1 EP2258468A1 (en) 2010-12-08
EP2258468B1 true EP2258468B1 (en) 2012-05-16

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EP (1) EP2258468B1 (en)

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DE102013002290A1 (en) * 2013-02-08 2014-08-28 Chemofast Anchoring Gmbh Mixing device for two-component cartridges
US9757763B2 (en) * 2013-10-31 2017-09-12 Nordson Corporation Side by side cartridge assemblies and related methods
DE102014211293A1 (en) * 2014-06-12 2015-12-17 Henkel Ag & Co. Kgaa Apparatus for the preparation and application of adhesive
IT201700070651A1 (en) * 2017-06-23 2018-12-23 Fic Htmd S R L CANNULA FOR THE INFUSION OF A HEMOSTATIC AGENT

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DE8900469U1 (en) * 1989-01-17 1990-05-23 Espe Stiftung & Co Produktions- Und Vertriebs Kg, 8031 Seefeld, De
DE9207048U1 (en) * 1992-05-25 1992-07-30 Chemofast Korte-Jungermann Gmbh & Co Kg, 4156 Willich, De
DE4224497A1 (en) * 1992-07-24 1994-01-27 Hilti Ag Mouthpiece for dispensing devices that are used to dispense two-component materials
US5333760A (en) * 1992-12-28 1994-08-02 Coltene/Whaledent, Inc. Dispensing and mixing apparatus
US5814022A (en) * 1996-02-06 1998-09-29 Plasmaseal Llc Method and apparatus for applying tissue sealant
DE20316879U1 (en) * 2003-10-31 2005-03-17 Sulzer Chemtech Ag Winterthur Coaxial two-component cartridge
WO2005095225A1 (en) 2004-04-01 2005-10-13 5 Mix Limited Dispenser for two components and method for dispensing first and second components
EP1602415A1 (en) * 2004-06-04 2005-12-07 3M Espe AG Syringe for a multi-component paste
CN1980746A (en) * 2004-07-08 2007-06-13 米克斯派克系统公开股份有限公司 Dispensing device for single use
EP1640060A1 (en) * 2004-09-22 2006-03-29 3M Espe Ag Mixer for multi-component pastes, kit, and method of mixing paste components
DE202006014087U1 (en) * 2006-09-14 2006-12-07 Ernst Mühlbauer Gmbh & Co. Kg Device for mixing and application of substance used in dental surgery, comprises partition with integrated lid for separation of components
US9016522B2 (en) * 2007-12-14 2015-04-28 Discus Dental, Llc Multi-compartment devices having dispensing tips
DE202009007919U1 (en) * 2009-06-05 2009-10-01 Ritter Gmbh Mixing system for two-component cartridge

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US20110026359A1 (en) 2011-02-03
EP2258468A1 (en) 2010-12-08
US8894270B2 (en) 2014-11-25

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