EP0396580B1 - Spray cartridge - Google Patents

Spray cartridge Download PDF

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Publication number
EP0396580B1
EP0396580B1 EP89900189A EP89900189A EP0396580B1 EP 0396580 B1 EP0396580 B1 EP 0396580B1 EP 89900189 A EP89900189 A EP 89900189A EP 89900189 A EP89900189 A EP 89900189A EP 0396580 B1 EP0396580 B1 EP 0396580B1
Authority
EP
European Patent Office
Prior art keywords
mixing
component
mixing tube
housing
spray cartridge
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
EP89900189A
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German (de)
French (fr)
Other versions
EP0396580A1 (en
Inventor
Manfred Rinklake
Albert Frischmann
Peter Ziereisen
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.)
Upat GmbH and Co
Original Assignee
Upat GmbH and Co
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Publication date
Application filed by Upat GmbH and Co filed Critical Upat GmbH and Co
Priority to AT89900189T priority Critical patent/ATE69024T1/en
Publication of EP0396580A1 publication Critical patent/EP0396580A1/en
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Publication of EP0396580B1 publication Critical patent/EP0396580B1/en
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    • 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
    • B65D81/3255—Containers provided with a piston or a movable bottom, and permitting admixture within the container
    • 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

Definitions

  • the invention relates to a spray cartridge for mixing and dispensing a mass consisting of two components with a cylindrical housing containing an ejection piston for receiving the first component and a mixing tube which is designed as a chamber for the second component which can be driven out by an ejection rod and at the end facing the ejection piston has a detachably fastened flat mixing wing plate with movably fastened mixing wings, the second component being enclosed in the mixing tube between two sealing pistons which can be displaced in the longitudinal direction when the expulsion rod is pressed in and one of which is displaced by an outlet for the second component in the space of the releases the first component
  • Such a spray cartridge is known from US-A-3 144 966 and allows the component housed there to be expelled from the mixing tube by pressing an expelling rod into a mixing tube so that it comes into contact with the other component in the housing of the spray cartridge and with this can be mixed well with the mixing vane plate attached to it when the mixing tube is moved axially back and forth.
  • the user In order to maintain the prescribed mixing ratio of the two components, the user must press the expulsion rod so far into the mixing tube that the entire component present there is driven out of it. If the stripping rod is not driven in over the full intended length, the component accommodated in the mixing tube does not have the prescribed mixing proportion after the two components have been mixed, so that the mass does not have the optimum properties and the intended setting time. There is then a risk that anchoring carried out with the aid of the spray cartridge will not withstand the intended loads and thus cause accidents. In the known spray cartridge, there is therefore a risk that hazards which are difficult to detect are caused by incorrect handling.
  • the invention has for its object to provide a spray cartridge of the type mentioned, in its use, incorrect operation with insufficient discharge of the hardener from the mixing tube before the mixing process is excluded
  • the stripping rod has a closure part which is arranged such that it comes into engagement with a corresponding latching part at the end of the mixing tube protruding from the housing when the stripping rod the first piston sufficiently far in the direction of the second Piston has shifted, the closure part forms a snap lock together with the Vefrastungstei for transmitting a torque.
  • the snap lock according to the invention ensures that the mixing tube and the mixing plate can only be actuated if the stripping rod has been pressed into the mixing tube by the prescribed path length, the correct amount of the component in the mixing tube being pressed out for the mixing ratio of the two components . If the handle provided on the stripping rod is pulled too early for mixing, power cannot be transferred to the mixing tube with the mixing paddle plate. Only when the snap lock on the handle of the expulsion rod engages with the mixing tube, is it possible to move the mixing tube back and forth with the mixing paddle plate.
  • the handle arranged on the expulsion rod has two elastically expandable wings which can be pushed forward via a latching lug at the free end of the mixing tube.
  • outwardly facing latching lugs are provided on elastically compressible wings of the handle of the expulsion rod, which can be pressed into a U-shaped profile on the mixing tube and get caught there.
  • the spray cartridge 1 shown in half section in FIG. 1 has a cylindrical housing 2, which is closed at the end pointing upward in FIG. 1 by a wall 3 on which a screw socket 4 is formed.
  • the housing 2 is provided with a removable cover 5, which is removed before inserting the spray cartridge 1 into a squeeze gun, so that the piston of the squeeze gun can be pressed against a squeeze piston 6 located under the lid 5.
  • the ejection piston 6 is in the filled spray cartridge 1 in the lower position shown in FIG. 1.
  • the housing 2 is largely filled with a first component, for example a reaction resin 7.
  • the second component for example a hardener 8 is located inside a mixing tube 9 which extends along the central longitudinal axis of the housing 2 and the screw connector 4 through which the mixing tube 9 is guided.
  • the end 10 of the mixing tube 9 protruding from the housing 2 is through closed an outer piston 11, which has an annular groove 12 for a sealing ring 13 in order to seal the hardener 8 well to the outside, as can be seen in the enlarged illustration in FIG. 2.
  • a bottom 14 closes the opposite rear end 15 of the mixing tube 9, which is provided with an external thread 16 which is screwed into an internal thread 17 of a mixing wing plate 18 in order to obtain an easily detachable connection.
  • the mixing vane plate 18 has a plurality of movable mixing vanes and openings into which stop pieces 19 can engage on the inside of the wall 3 when the mixing vane plate 18 has been moved up to the wall 3 by pulling on the mixing tube 9.
  • an inner piston 20 is provided in the mixing tube 9, which has two ring grooves 21 for two sealing rings 22 and is at a distance from the base 14 which is greater than its length. At a distance that is at least somewhat greater than the length of the inner piston 20, there are four outlet openings 23 diametrically opposed in pairs in the mixing tube 9, through which the hardener which is tightly enclosed during storage between the outer piston 14 and the inner piston 20 is driven out if the spray cartridge is to be used.
  • the stripping rod 24 shown in FIG. 3 is used, which has a stamp 25 at the end pointing downward in FIG. 3.
  • the stripping rod 24 consists of a shaft 26 with ribs 27 and a mixing handle 28, on which two elastically expandable wings 29 are formed, which are provided with a dovetail-shaped recess 30, which serve as an elastic snap connection when the stripping rod 24 is inserted into the mixing tube 9 becomes.
  • the hardener 8 By further pushing in the expulsion rod 24, the hardener 8 reaches the interior of the housing 2.
  • a dovetail-shaped latching lug 31 is provided on the end 10 of the mixing tube 9 protruding from the housing 2, which has a complementary shape to the dovetail-shaped recess 30 has.
  • a stop flange 32 is provided slightly below the latching lug 31, which supports the mixing tube 9 against the screw connection 4 when the expulsion rod 24 is inserted, and thus prevents the ejection piston 6 from being expelled from the housing 2.
  • the dimensions of the outer piston 11, the inner piston 20, the expulsion rod 24, the wing 29 and the arrangement of the stop flange 32 and the locking lug 31 are selected such that the recesses 30 on the wings 29 with the locking lug 31 only snap into place when the outer piston 11 has been advanced so far towards the inner piston 20 that the amount of hardener expelled is certainly sufficient.
  • 5 shows an arrangement in which the various dimensions and distances are coordinated with one another in such a way that the engagement takes place precisely when the two pistons 11 and 20 are just touching.
  • the hardener 8 can be mixed well with the reaction resin 7, the mixing blades of the mixing blade plate 18 can be swiveled up and down alternately, whirling the two components well together.
  • the stop pieces 19 engage with recesses in the mixing paddle plate 18 so that the screw connection between the external thread 16 on the mixing tube 9 and the internal thread of the mixing paddle plate by turning the mixing handle 28 18 can be solved. So that a torque can be transmitted, it is necessary that the dovetail-shaped recess 30 and the locking lug 31 are not are rotationally symmetrical. Rather, both have the cross-sectional shape shown in FIGS. 2 and 3, corresponding to a dovetail guide, the length of the dovetail guide in the direction perpendicular to the plane of the drawing corresponding approximately to the maximum width of the locking lug 31, which is approximately equal to the diameter of the screw connector 4
  • the mixing tube 9 can be completely pulled out of the housing 2 and the screw socket 4, which then serves to fasten the spray tube 33 shown in FIG. 6, which has a cylindrical part 34 with has an internal thread which merges into a tube section 36 via a funnel-shaped section 35.
  • a snap lock is provided in the embodiment of the spray cartridge shown in FIGS. 1, 4 and 5, which, as described above, can be elastically expanded by a dovetail-shaped recess 30 at the free end of the two Wing 29 and associated locking lugs 31 is formed on the front projecting end 10 of the mixing tube 9.
  • FIG. 7 shows a modification of the snap lock, the position of the mixing handle 28 corresponding to the position of the mixing handle 28 in FIG. 4.
  • latching lugs 41 are provided on the free ends of the wings 29, which can be elastically pressed in radially in the exemplary embodiment shown in FIG. 7.
  • the latching noses 41 have the cross-sectional shape recognizable in FIG. 7 and form latching nose profiles running at right angles to the plane of the drawing, which taper towards the housing 2 of the spray cartridge and on the side facing away from the housing 2 have a stop surface running perpendicular to the longitudinal axis of the expulsion rod 24.
  • the spray cartridge according to FIG. 7 has a U-profile 39 at the projecting end 10 of the mixing tube 9, which has recesses 40 on the mutually facing inner sides of the side parts of the U-profile is provided, in which the locking lugs 41 find space exactly when the mixing handle 28 is pressed in the direction of the housing 2 of the spray cartridge.
  • the U-profile 39 has the shape recognizable in FIG. 7 and is approximately square in the plan view, not shown. Since the spray cartridge shown in FIG. 7 corresponds to the spray cartridge 1 described above except for the snap closure, there is no need to describe its structure and mode of operation again.
  • the components known from the previous figures are given the same reference numerals, so that the person skilled in the art can immediately recognize the correspondences.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating Apparatus (AREA)
  • Nozzles (AREA)
  • Package Specialized In Special Use (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

A spray cartridge for mixing and distributing a two-component substance has a cylindrical sheath (2) containing an ejection piston (6) which receives a first component (7) and a mixing tube (9) and is designed as a chamber for the second component (8), which can be ejected by a plunger. A flat-vaned mixing disk (18) with mobile mixing vanes is releasably attached to the end of the mixing tube (9) nearer the ejection piston (6). In the mixing tube (9) the second component (8) is enclosed between two sealing cylinders (11, 20) which slide longitudinally when the plunger (24) is pushed in. In sliding, one of the pistons (20) frees the orifices (23) for admission of the second component (8) into the cavity of the first component (7).

Description

Die Erfindung betrifft eine Spritzkartusche zum Mischen und Austragen einer aus zwei Komponenten bestehenden Masse mit einem einen Auspresskolben enthaltenden zylindrischen Gehäuse zur Aufnahme der ersten Komponente und eines Mischrohres, das als Kammer für die zweite durch einen Austreibstab austreibbare Komponente ausgebildet ist und am zum Auspresskolben weisenden Ende eine lösbar befestigte flache Mischflügelplatte mit beweglich befestigten Mischflügeln aufweist, wobei die zweite Komponente im Mischrohr zwischen zwei dichtenden Kolben eingeschlossen ist, die beim Einpressen des Austreibstabes in Längsrichtung verschiebbar sind und von denen der eine durch Verschieben einen Austritt für die zweite Komponente in den Raum der ersten Komponente freigibtThe invention relates to a spray cartridge for mixing and dispensing a mass consisting of two components with a cylindrical housing containing an ejection piston for receiving the first component and a mixing tube which is designed as a chamber for the second component which can be driven out by an ejection rod and at the end facing the ejection piston has a detachably fastened flat mixing wing plate with movably fastened mixing wings, the second component being enclosed in the mixing tube between two sealing pistons which can be displaced in the longitudinal direction when the expulsion rod is pressed in and one of which is displaced by an outlet for the second component in the space of the releases the first component

Eine derartige Spritzkartusche ist aus der US-A-3 144 966 bekannt und gestattet es, durch Einpressen eines Austreibstabes in ein Mischrohr die dort untergebrachte Komponente aus dem Mischrohr herauszutreiben, so daß diese mit der anderen Komponente im Gehäuse der Spritzkartusche in Berührung kommt und mit dieser beim axialen Hin-und Herbewegen des Mischrohres mit der an ihr befestigten Mischflügelplatte gut vermischt werden kann. Um das vorgeschriebene Mischungsverhältnis der beiden Komponenten einzuhalten, muß der Benutzer den Austreibstab so weit in das Mischrohr einpressen, daß die gesamte dort vorhandene Komponente aus diesem herausgetrieben wird. Wenn der Austreibstab nicht über die volle vorgesehene Länge eingetrieben wird, hat die im Mischrohr untergebrachte Komponente nach dem Mischen der beiden Komponenten nicht den vorgeschriebenen Mischungsanteil, so daß die Masse nicht die optimalen Eigenschaften und die vorgesehene Abbindezeit hat. Es besteht dann die Gefahr, daß mit Hilfe der Spritzkartusche durchgeführte Verankerungen nicht die vorgesehenen Belastungen aushalten und somit Unfälle verursacht werden. Bei der bekannten Spritzkartusche besteht somit die Gefahr, daß durch eine falsche Handhabung nur schwer erkennbare Gefährdungen verursacht werden.Such a spray cartridge is known from US-A-3 144 966 and allows the component housed there to be expelled from the mixing tube by pressing an expelling rod into a mixing tube so that it comes into contact with the other component in the housing of the spray cartridge and with this can be mixed well with the mixing vane plate attached to it when the mixing tube is moved axially back and forth. In order to maintain the prescribed mixing ratio of the two components, the user must press the expulsion rod so far into the mixing tube that the entire component present there is driven out of it. If the stripping rod is not driven in over the full intended length, the component accommodated in the mixing tube does not have the prescribed mixing proportion after the two components have been mixed, so that the mass does not have the optimum properties and the intended setting time. There is then a risk that anchoring carried out with the aid of the spray cartridge will not withstand the intended loads and thus cause accidents. In the known spray cartridge, there is therefore a risk that hazards which are difficult to detect are caused by incorrect handling.

Der Erfindung liegt die Aufgabe zugrunde, eine Spritzkartusche der eingangs genannten Art zu schaffen, bei deren Benutzung eine Fehlbedienung mit einem ungenügenden Austrag des Härters aus dem Mischrohr vor dem Mischvorgang ausgeschlossen istThe invention has for its object to provide a spray cartridge of the type mentioned, in its use, incorrect operation with insufficient discharge of the hardener from the mixing tube before the mixing process is excluded

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Austreibstab einen Verschlußteil aufweist, der derart angeordnet ist, daß er mit einem entsprechenden Verrastungsteil am aus dem Gehäuse herausragenden Ende des Mischrohres in Eingriff kommt, wenn der Austreibstab den ersten Kolben genügend weit in Richtung auf den zweiten Kolben verschoben hat, wobei das Verschlußteil zusammen mit dem Vefrastungstei) einen Schnappverschluß zur Übertragung eines Drehmomentes bildet.This object is achieved in that the stripping rod has a closure part which is arranged such that it comes into engagement with a corresponding latching part at the end of the mixing tube protruding from the housing when the stripping rod the first piston sufficiently far in the direction of the second Piston has shifted, the closure part forms a snap lock together with the Vefrastungstei for transmitting a torque.

Durch den erfindungsgemäßen Schnappverschluß ist sichergestellt, daß eine Betätigung des Mischrohres und der Mischflügelpiatte nur dann erfolgen kann, wenn der Austreibstab um die vorgeschriebene Weglänge in das Mischrohr eingedrückt worden ist, wobei die für das Mischungsverhältnis der beiden Komponenten richtige Menge der Komponente im Mischrohr herausgepreßt wird. Bei einem zu frühen Ziehen an dem am Austreibstab vorgesehenen Handgriff zum Mischen, kann eine Kraftübertragung zum Mischrohr mit der Mischflügelplatte nicht erfolgen. Erst wenn der Schnappverschluß am Handgriff des Austreibstabes mit dem Mischrohr verrastet, ist es möglich, das Mischrohr mit der Mischflügelplatte hin- und herzubewegen.The snap lock according to the invention ensures that the mixing tube and the mixing plate can only be actuated if the stripping rod has been pressed into the mixing tube by the prescribed path length, the correct amount of the component in the mixing tube being pressed out for the mixing ratio of the two components . If the handle provided on the stripping rod is pulled too early for mixing, power cannot be transferred to the mixing tube with the mixing paddle plate. Only when the snap lock on the handle of the expulsion rod engages with the mixing tube, is it possible to move the mixing tube back and forth with the mixing paddle plate.

Gemäß einem ersten Ausführungsbeispiel der Erfindung verfügt der am Austreibstab angeordnete Handgriff über zwei elastisch spreizbare Flügel, die über eine Rastnase am freien Ende des Mischrohres vorschiebbar sind. Bei einer anderen Ausgestaltung sind an elastisch zusammendrückbare Flügel des Handgriffes des Austreibstabes nach außen weisende Rastnasen vorgesehen, die in ein U-Profil am Mischrohr eingedrückt werden können und sich dort verhaken.According to a first exemplary embodiment of the invention, the handle arranged on the expulsion rod has two elastically expandable wings which can be pushed forward via a latching lug at the free end of the mixing tube. In another embodiment, outwardly facing latching lugs are provided on elastically compressible wings of the handle of the expulsion rod, which can be pressed into a U-shaped profile on the mixing tube and get caught there.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben. Es zeigen:

  • Fig. 1 die erfindungsgemäße Spritzkartusche im Lagerzustand, teilweise im Längsschnitt,
  • Fig. 2 eine vergrößerte Darstellung des Mischrohres im Längsschnitt,
  • Fig. 3 den Austreibstab mit einem Schnappverschluß,
  • Fig. 4 die Spritzkartusche in einer der Fig. 1 entsprechenden Darstellungsweise kurz nach Beginn des Austreibens des Härters aus dem Mischrohr,
  • Fig. 5 eine der Fig. 4 entsprechende Darstellung der Spritzkartusche nach dem vollständigen Austreiben des Härters,
  • Fig. 6 ein Spritzrohr zum Aufschrauben auf den Schraubstutzen der Spritzkartusche und
  • Fig. 7 eine der Fig. 4 entsprechende Darstellung einer Spritzkartusche mit einem abgewandelten Schnappverschluß.
An exemplary embodiment of the invention is described in more detail below with reference to the drawing. Show it:
  • 1 shows the spray cartridge according to the invention in the stored state, partly in longitudinal section,
  • 2 is an enlarged view of the mixing tube in longitudinal section,
  • 3 the stripping rod with a snap lock,
  • 4 shows the spray cartridge in a representation corresponding to FIG. 1 shortly after the hardener has started to be expelled from the mixing tube,
  • 5 shows a representation of the spray cartridge corresponding to FIG. 4 after the hardener has been completely expelled,
  • Fig. 6 is a spray tube for screwing onto the screw socket of the spray cartridge and
  • Fig. 7 is a representation corresponding to FIG. 4 of a spray cartridge with a modified snap lock.

Die in Fig. 1 im Halbschnitt dargestellte Spritzkartusche 1 verfügt über ein zylinderförmiges Gehäuse 2, das an dem in Fig. 1 nach oben weisenden Ende durch eine Wandung 3 verschlossen ist, an der ein Schraubstutzen 4 angeformt ist.The spray cartridge 1 shown in half section in FIG. 1 has a cylindrical housing 2, which is closed at the end pointing upward in FIG. 1 by a wall 3 on which a screw socket 4 is formed.

An dem dem Schraubstutzen 4 gegenüberliegenden Ende ist das Gehäuse 2 mit einem abnehmbaren Deckel 5 versehen, der vor dem Einlegen der Spritzkartusche 1 in eine Ausdrückpistole abgenommen wird, so daß der Kolben der Ausdrückpistole gegen einen unter dem Deckel 5 liegenden Auspresskolben 6 angedrückt werden kann.At the screw socket 4 opposite end, the housing 2 is provided with a removable cover 5, which is removed before inserting the spray cartridge 1 into a squeeze gun, so that the piston of the squeeze gun can be pressed against a squeeze piston 6 located under the lid 5.

Der Auspresskolben 6 befindet sich bei der gefüllten Spritzkartusche 1 in der in Fig. 1 gezeigten unteren Position. Das Gehäuse 2 ist zum größten Teil mit einer ersten Komponente, beispielsweise einem Reaktionsharz 7 gefüllt. Die zweite Komponente, beispielsweise ein Härter 8 befindet sich im Innem eines Mischrohres 9, das sich entlang der Mittellängsachse des Gehäuses 2 und des Schraubstutzens 4 erstreckt, durch den das Mischrohr 9 geführt ist Das aus dem Gehäuse 2 herausragende Ende 10 des Mischrohres 9 ist durch einen äußeren Kolben 11 verschlossen, der eine Ringnut 12 für einen Dichtungsring 13 aufweist, um den Härter 8 nach außen gut abzudichten, wie man in der vergrößerten Darstellung in Fig. 2 erkennen kann.The ejection piston 6 is in the filled spray cartridge 1 in the lower position shown in FIG. 1. The housing 2 is largely filled with a first component, for example a reaction resin 7. The second component, for example a hardener 8, is located inside a mixing tube 9 which extends along the central longitudinal axis of the housing 2 and the screw connector 4 through which the mixing tube 9 is guided. The end 10 of the mixing tube 9 protruding from the housing 2 is through closed an outer piston 11, which has an annular groove 12 for a sealing ring 13 in order to seal the hardener 8 well to the outside, as can be seen in the enlarged illustration in FIG. 2.

Ein Boden 14 verschließt das gegenüberliegende hintere Ende 15 des Mischrohres 9, das mit einem Außengewinde 16 versehen ist, welches in ein Innengewinde 17 einer Mischflügelplatte 18 eingeschraubt ist, um eine leicht lösbare Verbindung zu erhalten. Die Mischflügelplatte 18 verfügt über mehrere bewegliche Mischflügel und Öffnungen, in die Anschlagstutzen 19 auf der Innenseite der Wandung 3 eingreifen können, wenn die Mischflügelplatte 18 bis zur Wandung 3 durch Ziehen am Mischrohr 9 verschoben worden ist.A bottom 14 closes the opposite rear end 15 of the mixing tube 9, which is provided with an external thread 16 which is screwed into an internal thread 17 of a mixing wing plate 18 in order to obtain an easily detachable connection. The mixing vane plate 18 has a plurality of movable mixing vanes and openings into which stop pieces 19 can engage on the inside of the wall 3 when the mixing vane plate 18 has been moved up to the wall 3 by pulling on the mixing tube 9.

Wie man am besten in Fig. 2 erkennt, ist im Mischrohr 9 zusätzlich zu dem äußeren Kolben 11 ein innerer Kolben 20 vorgesehen, der zwei Ringnuten 21 für zwei Dichtungsringe 22 aufweist und vom Boden 14 einen Abstand hat, der größer als seine Länge ist. In einem Abstand der mindestens etwas größer als die Länge des inneren Kolbens 20 ist, befinden sich im Mischrohr 9 vier paarweise diametral gegenüberliegende Austrittsöffnungen 23, durch die der während der Lagerung zwischen dem äußeren Kolben 14 und dem inneren Kolben 20 dicht eingeschlossene Härter ausgetrieben wird, wenn die Spritzkartusche verwendet werden soll.As can best be seen in FIG. 2, in addition to the outer piston 11, an inner piston 20 is provided in the mixing tube 9, which has two ring grooves 21 for two sealing rings 22 and is at a distance from the base 14 which is greater than its length. At a distance that is at least somewhat greater than the length of the inner piston 20, there are four outlet openings 23 diametrically opposed in pairs in the mixing tube 9, through which the hardener which is tightly enclosed during storage between the outer piston 14 and the inner piston 20 is driven out if the spray cartridge is to be used.

Hierzu wird der in Fig. 3 dargestellte Austreibstab 24 verwendet, der an dem in Fig. 3 nach unten zeigenden Ende über einen Stempel 25 verfügt. Der Austreibstab 24 besteht aus einem Schaft 26 mit Rippen 27 und einem Mischgriff 28, an dem zwei elastisch spreizbare Flügel 29 angeformt sind, die mit einer schwalbenschwanzförmigen Ausnehmung 30 versehen sind, welche als elastische Schnappverbindung dienen, wenn der Austreibstab 24 in das Mischrohr 9 eingeschoben wird.For this purpose, the stripping rod 24 shown in FIG. 3 is used, which has a stamp 25 at the end pointing downward in FIG. 3. The stripping rod 24 consists of a shaft 26 with ribs 27 and a mixing handle 28, on which two elastically expandable wings 29 are formed, which are provided with a dovetail-shaped recess 30, which serve as an elastic snap connection when the stripping rod 24 is inserted into the mixing tube 9 becomes.

Beim Einschieben des Stempels 25 in das herausragende Ende 10 des Mischrohres 9 wird der äußere Kolben 11 weiter in das Innere des Mischrohres 9 verschoben. Da der Härter 8 eine nicht komprimierbare Paste ist, verschiebt sich der innere Kolben 20 entsprechend so lange, bis er über die Lage der Austrittsöffnungen 23 hinaus in Richtung auf den Boden 14 vorgepreßt worden ist und die Austrittsöffnungen 23 freigibt. Diese Phase ist in Fig. 4 im Halbschnitt dargestelltWhen the plunger 25 is inserted into the protruding end 10 of the mixing tube 9, the outer piston 11 is moved further into the interior of the mixing tube 9. Since the hardener 8 is a non-compressible paste, the inner piston 20 moves correspondingly until it has been pressed forward beyond the position of the outlet openings 23 in the direction of the bottom 14 and releases the outlet openings 23. This phase is shown in Fig. 4 in half section

Durch weiteres Hineinpressen des Austreibstabes 24 gelangt der Härter 8 in den Innenraum des Gehäuses 2.By further pushing in the expulsion rod 24, the hardener 8 reaches the interior of the housing 2.

Wie man in den Fig. 1, 4, 5 und insbesondere in der vergrößerten Darstellung der Fig. 2 erkennt, ist an dem aus dem Gehäuse 2 herausragenden Ende 10 des Mischrohres 9 eine schwalbenschwanzförmige Rastnase 31 vorgesehen, die eine komplementäre Form zu der schwalbenschwanzförmigen Ausnehmung 30 aufweist. Etwas unterhalb der Rastnase 31 ist ein Anschlagflansch 32 vorgesehen, der das Mischrohr 9 beim Einschieben des Austreibstabes 24 gegen den Schraubstutzen 4 abstützt und somit ein Austreiben des Auspresskolbens 6 aus dem Gehäuse 2 verhindert.As can be seen in FIGS. 1, 4, 5 and in particular in the enlarged representation of FIG. 2, a dovetail-shaped latching lug 31 is provided on the end 10 of the mixing tube 9 protruding from the housing 2, which has a complementary shape to the dovetail-shaped recess 30 has. A stop flange 32 is provided slightly below the latching lug 31, which supports the mixing tube 9 against the screw connection 4 when the expulsion rod 24 is inserted, and thus prevents the ejection piston 6 from being expelled from the housing 2.

Die Abmessungen des äußeren Kolbens 11, des inneren Kolbens 20, des Austreibstabs 24, der Flügel 29 sowie die Anordnung des Anschlagflansches 32 und der Rastnase 31 sind so gewählt, daß ein Einrasten der Ausnehmungen 30 an den Flügeln 29 mit der Rastnase 31 erst dann erfolgt, wenn der äußere Kolben 11 so weit in Richtung auf den inneren Kolben 20 vorgeschoben worden ist, daß die ausgetriebene Härtermenge sicher ausreichend ist. In Fig. 5 ist eine Anordnung dargestellt, bei der die verschiedenen Abmessungen und Abstände so aufeinander abgestimmt sind, daß die Einrastung genau dann erfolgt, wenn die beiden Kolben 11 und 20 sich gerade berühren.The dimensions of the outer piston 11, the inner piston 20, the expulsion rod 24, the wing 29 and the arrangement of the stop flange 32 and the locking lug 31 are selected such that the recesses 30 on the wings 29 with the locking lug 31 only snap into place when the outer piston 11 has been advanced so far towards the inner piston 20 that the amount of hardener expelled is certainly sufficient. 5 shows an arrangement in which the various dimensions and distances are coordinated with one another in such a way that the engagement takes place precisely when the two pistons 11 and 20 are just touching.

Wenn ausgehend von der in Fig. 5 veranschaulichten Stellung nach dem Einrasten der Flügel 29 des Austreibstabes mit der Rastnase 31 des Mischrohres 9 am Mischgriff 28 gezogen und gedrückt wird, kann der Härter 8 gut mit dem Reaktionsharz 7 vermischt werden, wobei die Mischflügel der Mischflügelplatte 18 abwechselnd nach oben und nach unten verschwenkt werden und dabei die beiden Komponenten gut miteinander verquirlen.If, starting from the position illustrated in FIG. 5, after the wings 29 of the expulsion rod are engaged and pulled with the latching lug 31 of the mixing tube 9 on the mixing handle 28, the hardener 8 can be mixed well with the reaction resin 7, the mixing blades of the mixing blade plate 18 can be swiveled up and down alternately, whirling the two components well together.

Wenn die Mischflügelplatte 18 gegen die Wandung 3 durch Ziehen am Mischgriff 28 angedrückt wird, gelangen die Anschlagstutzen 19 mit Ausnehmungen in der Mischflügelplatte 18 in Eingriff, so daß durch Drehen am Mischgriff 28 die Schraubverbindung zwischen dem Außengewinde 16 am Mischrohr 9 und dem Innengewinde der Mischflügelplatte 18 gelöst werden kann. Damit eine Übertragung eines Drehmomentes erfolgen kann, ist es erforderlich, daß die schwalbenschwanzförmige Ausnehmung 30 sowie die Rastnase 31 nicht rotationssymmetrisch sind. Vielmehr haben beide die in den Fig. 2 und 3 dargestellte Querschnittsform entsprechend einer Schwalbenschwanzführung, wobei die Länge der Schwalbenschwanzführung in derzur Zeichenebene senkrechten Richtung etwa der maximalen Breite der Rastnase 31 entspricht, die etwa gleich dem Durchmesser des Schraubstutzens 4 istWhen the mixing paddle plate 18 is pressed against the wall 3 by pulling the mixing handle 28, the stop pieces 19 engage with recesses in the mixing paddle plate 18 so that the screw connection between the external thread 16 on the mixing tube 9 and the internal thread of the mixing paddle plate by turning the mixing handle 28 18 can be solved. So that a torque can be transmitted, it is necessary that the dovetail-shaped recess 30 and the locking lug 31 are not are rotationally symmetrical. Rather, both have the cross-sectional shape shown in FIGS. 2 and 3, corresponding to a dovetail guide, the length of the dovetail guide in the direction perpendicular to the plane of the drawing corresponding approximately to the maximum width of the locking lug 31, which is approximately equal to the diameter of the screw connector 4

Nach dem Lösen der Schraubverbindung zwischen dem Mischrohr 9 und der Mischflügelplatte 18 kann das Mischrohr 9 ganz aus dem Gehäuse 2 und dem Schraubstutzen 4 herausgezogen werden, der anschließend zur Befestigung des in Fig. 6 dargestellten Spritzrohres 33 dient, das über einen zylindrischen Teil 34 mit einem Innengewinde verfügt, der über einen trichterförmigen Abschnitt 35 in einen Rohrabschnitt 36 übergeht.After loosening the screw connection between the mixing tube 9 and the mixing wing plate 18, the mixing tube 9 can be completely pulled out of the housing 2 and the screw socket 4, which then serves to fasten the spray tube 33 shown in FIG. 6, which has a cylindrical part 34 with has an internal thread which merges into a tube section 36 via a funnel-shaped section 35.

Um eine eventuelle Fehlbedienung, das heißt das Mischen ohne Härter ganz auszuschließen, ist bei dem in den Fig. 1, 4 und 5 dargestellten Ausführungsbeispiel der Spritzkartusche ein Schnappverschluß vorgesehen, der wie oben beschrieben durch eine schwalbenschwanzförmige Ausnehmung 30 am freien Ende der beiden elastisch spreizbaren Flügel 29 und zugeordnete Rastnasen 31 am vorderen herausragenden Ende 10 des Mischrohres 9 gebildet ist.In order to rule out any incorrect operation, that is to say mixing without hardener, a snap lock is provided in the embodiment of the spray cartridge shown in FIGS. 1, 4 and 5, which, as described above, can be elastically expanded by a dovetail-shaped recess 30 at the free end of the two Wing 29 and associated locking lugs 31 is formed on the front projecting end 10 of the mixing tube 9.

In Fig. 7 ist eine Abwandlung des Schnappverschlusses dargestellt, wobei die Position des Mischgriffes 28 entsprechend der Position des Mischgriffes 28 in Fig. 4 dargestellt ist. Abweichend von dem in Fig. 4 dargestellten Ausführungsbeispiel sind an den freien Enden der Flügel 29, die bei dem in Fig. 7 dargestellten Ausführungsbeispiel elastisch radial eindrückbar sind, Rastnasen 41 vorgesehen. Die Rastnasen 41 haben die in Fig. 7 erkennbare Querschnittsgestalt und bilden rechtwinklig zur Zeichenebene verlaufende Rastnasenprofile, die sich in Richtung auf das Gehäuse 2 der Spritzkartusche verjüngen und auf der vom Gehäuse 2 wegweisenden Seite eine rechtwinklig zur Längsachse des Austreibstabes 24 verlaufende Anschlagfläche haben.FIG. 7 shows a modification of the snap lock, the position of the mixing handle 28 corresponding to the position of the mixing handle 28 in FIG. 4. In a departure from the exemplary embodiment shown in FIG. 4, latching lugs 41 are provided on the free ends of the wings 29, which can be elastically pressed in radially in the exemplary embodiment shown in FIG. 7. The latching noses 41 have the cross-sectional shape recognizable in FIG. 7 and form latching nose profiles running at right angles to the plane of the drawing, which taper towards the housing 2 of the spray cartridge and on the side facing away from the housing 2 have a stop surface running perpendicular to the longitudinal axis of the expulsion rod 24.

Statt der Rastnasen 31, bei dem in Fig. 4 dargestellten Ausführungsbeispiel, verfügt die Spritzkartusche gemäß Fig. 7 am herausragenden Ende 10 des Mischrohres 9 über ein U-Profil 39, das auf den einander zuweisenden Innenseiten der Seitenteile des U-Profils mit Ausnehmungen 40 versehen ist, in denen die Rastnasen 41 genau Platz finden, wenn der Mischgriff 28 in Richtung auf das Gehäuse 2 der Spritzkartusche gedrückt wird. Das U-Profil 39 hat die in Fig. 7 erkennbare Gestalt und ist In der nicht dargestellten Draufsicht in etwa quadratisch. Da die in Fig. 7 dargestellte Spritzkartusche bis auf den Schnappverschluß der weiter oben beschriebenen Spritzkartusche 1 entspricht, erübrigt es sich, deren Aufbau und Funktionsweise erneut zu beschreiben. In Fig. 7 sind die aus den vorhergehenden Figuren bekannten Bauteile mit gleichen Bezugszeichen versehen, so daß der Fachmann die Übereinstimmungen sofort erkennen kann.Instead of the locking lugs 31 in the embodiment shown in FIG. 4, the spray cartridge according to FIG. 7 has a U-profile 39 at the projecting end 10 of the mixing tube 9, which has recesses 40 on the mutually facing inner sides of the side parts of the U-profile is provided, in which the locking lugs 41 find space exactly when the mixing handle 28 is pressed in the direction of the housing 2 of the spray cartridge. The U-profile 39 has the shape recognizable in FIG. 7 and is approximately square in the plan view, not shown. Since the spray cartridge shown in FIG. 7 corresponds to the spray cartridge 1 described above except for the snap closure, there is no need to describe its structure and mode of operation again. In Fig. 7, the components known from the previous figures are given the same reference numerals, so that the person skilled in the art can immediately recognize the correspondences.

Claims (3)

1. A spray cartridge for mixing and discharging a material consisting of two components (7, 8) comprising a cylindrical housing (2) which contains an ejection piston (6), for receiving the first component (7) and a mixing tube ( 9 ) rich is in the form of a chamber for the second component (8) rich can be expelled by an expulsion bar (25), while at the end (15) facing towards the ejection piston (6) it has a releasably secured flat mixing vane plate (18) with movably fixed mixing vanes, wherein the second component (8) is enclosed in the mixing tube (9) between two sealing pistons (11, 20) which are displaceable when the expulsion bar (24) is pressed in in the longitudinal direction and of which the one by displacement opens an outlet (23) for the second component (8) into the space of the first component (7) characterised in that the expulsion bar (24) has a closure portion (29, 30,41) which is so arranged that it comes into engagement with a corresponding retaining portion (31, 39, 40) at the end (10) of the mixing tube (9) which projects out of the housing (2), when the expulsion bar (24) has displaced the first piston (11) sufficiently far towards the second piston (20), wherein the closure portion with the retaining portion forms a snap closure means (29, 30, 31, 39, 40,41) for the transmission of a torque.
2. A spray cartridge according to claim 1 characterised in that the expulsion bar (24) has as the closure portion two elastically spreadable blades (29) which at their ends facing towards the housing (2) have a dovetail-shaped recess (30) with which there is associated, as the retaining portion, a retaining projection (31) on the end (10) of the mixing tube (9), which projects out of the housing (2).
3. A spray cartridge according to claim 1 characterised in that as the closure portion the expulsion bar (24) has two blades (29) which are movable elastically towards each other and which at their free end each have a radially outwardly projecting retaining projection (41) with which there is associated a U-shaped profile (39), as the retaining portion, at the end (10) of the mixing tube (9) which projects out of the housing (2), the U-shaped profile (39) being provided on the mutually facing inward sides of the side portions of the U-shaped profile (39) with recesses (40) into rich the retaining projections (41) are engageable.
EP89900189A 1987-12-24 1988-12-14 Spray cartridge Expired - Lifetime EP0396580B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89900189T ATE69024T1 (en) 1987-12-24 1988-12-14 SPRAY CARTRIDGE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873744161 DE3744161A1 (en) 1987-12-24 1987-12-24 SPRAY CARTRIDGE
DE3744161 1987-12-24

Publications (2)

Publication Number Publication Date
EP0396580A1 EP0396580A1 (en) 1990-11-14
EP0396580B1 true EP0396580B1 (en) 1991-10-30

Family

ID=6343649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89900189A Expired - Lifetime EP0396580B1 (en) 1987-12-24 1988-12-14 Spray cartridge

Country Status (6)

Country Link
EP (1) EP0396580B1 (en)
AT (1) ATE69024T1 (en)
AU (1) AU2798089A (en)
DE (2) DE3744161A1 (en)
ES (1) ES2014551A6 (en)
WO (1) WO1989005763A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19730424A1 (en) * 1997-07-16 1999-01-21 Henkel Teroson Gmbh Device for storing and squeezing flowable compositions
DE19805888A1 (en) * 1998-02-13 1999-08-19 November Ag Molekulare Medizin Cap for containers
DE102013226118B3 (en) * 2013-12-16 2015-06-11 Heraeus Medical Gmbh Device for storing and mixing bone cement
DE102014101305A1 (en) * 2014-02-03 2015-08-06 Heraeus Medical Gmbh Device for storing and mixing bone cement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH258838A (en) * 1946-01-05 1948-12-31 Tripet Roger Device for homogenizing the contents of flasks or other similar containers.
US2592130A (en) * 1946-10-24 1952-04-08 Elastic Stop Nut Corp Insulating fastening device
US3144966A (en) * 1962-04-16 1964-08-18 Semco Res Inc Cartridge for mixing and dispensing sealant compound
US3437242A (en) * 1966-11-21 1969-04-08 Edward J Poitras Fluid storing,mixing and dispensing apparatus
US3803670A (en) * 1971-04-21 1974-04-16 W Johnson Fastener device
DE3421823A1 (en) * 1983-11-02 1985-05-09 Multica Verpackungen GmbH, 7551 Bischweier Multi-component cartridge
DE3439975A1 (en) * 1983-12-10 1985-06-20 Upat Gmbh & Co, 7830 Emmendingen Injection cartridge

Also Published As

Publication number Publication date
ES2014551A6 (en) 1990-07-16
DE3865974D1 (en) 1991-12-05
WO1989005763A1 (en) 1989-06-29
EP0396580A1 (en) 1990-11-14
DE3744161A1 (en) 1989-07-06
AU2798089A (en) 1989-07-19
ATE69024T1 (en) 1991-11-15

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