EP0160786B1 - Dispensing device for a container containing viscous products - Google Patents

Dispensing device for a container containing viscous products Download PDF

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Publication number
EP0160786B1
EP0160786B1 EP85101438A EP85101438A EP0160786B1 EP 0160786 B1 EP0160786 B1 EP 0160786B1 EP 85101438 A EP85101438 A EP 85101438A EP 85101438 A EP85101438 A EP 85101438A EP 0160786 B1 EP0160786 B1 EP 0160786B1
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EP
European Patent Office
Prior art keywords
adapter
gas container
valve
pressurized gas
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
EP85101438A
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German (de)
French (fr)
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EP0160786A2 (en
EP0160786A3 (en
Inventor
Gerhard Obrist
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.)
Aerosol Service AG
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Aerosol Service AG
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Publication date
Application filed by Aerosol Service AG filed Critical Aerosol Service AG
Priority to AT85101438T priority Critical patent/ATE55751T1/en
Publication of EP0160786A2 publication Critical patent/EP0160786A2/en
Publication of EP0160786A3 publication Critical patent/EP0160786A3/en
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Publication of EP0160786B1 publication Critical patent/EP0160786B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/015—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 pneumatically or hydraulically actuated piston or the like
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body
    • B65D83/384—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container
    • B65D83/386—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container actuation occurring by moving the aerosol container relative to the outer shell or external container
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/46—Tilt valves

Definitions

  • the invention relates to an expulsion device for a dispensing container intended for highly viscous contents according to the preamble of claim 1 (US-A-3217932).
  • Standard cartridges are cylindrical containers, at the front end of which there is an application opening that usually runs into a tip and the other end is closed by a movable piston.
  • the cartridge is placed in an application device, by means of which the piston is either pushed forward manually by compressed air and the product is thereby expelled.
  • the manually operated application devices work in portions, which means that they do not enable a uniform, continuous product line.
  • the necessary piston rod can interfere and manual pumping often leads to rapid fatigue.
  • the pneumatic application devices do not have these disadvantages, but they are structurally relatively complex and depend on a compressor or the like, so that they are practically exclusively reserved for the professional sector.
  • a cartridge pack is known from US Pat. No. 3,568,892, in which the cartridge containing the contents is clamped in a holder, similar to the manually operated packs mentioned.
  • an aerosol pressure container is provided in this pack, which generates a pressure gas cushion between the cartridge piston and a support plate of the holder, which closes tightly with the cartridge end. This pressure cushion acts on the piston and expels the filling material.
  • the supply of pressure medium from the pressure container into the pressure space between the cartridge piston and the support plate is controlled by a trigger mechanism acting on the pressure container or its valve.
  • This known cartridge pack is structurally relatively complex for a mass product and, moreover, offers no possibility of stopping the dispensing of filling material as long as the pressure cushion is still strong enough to drive the piston forward in the cartridge.
  • the invention is intended to improve an expulsion device for the dispensing container in question in such a way that, on the one hand, an extremely simple and correspondingly inexpensive construction and, on the other hand, a practical and functional mode of operation is achieved while avoiding the described defects of the known cartridge packs of this type.
  • the dispensing container shown comprises a plastic cartridge K with dispensing opening 0 and screwed-on application tip S, a tightly fitting piston P arranged movably in the cartridge and an adapter A for a standard aerosol pressure container D.
  • the adapter A is in the rear, without the Adapter open end 1 of the cartridge K tightly attached.
  • the highly viscous or pasty filling material F to be dispensed is located in the front space 2 of the cartridge K located between the piston P and the dispensing opening O.
  • the rear cartridge space lying between the piston P and the adapter A used is free of filling material and is referred to below as the pressure space 3.
  • the adapter A is H-shaped in longitudinal section and consists of a base 8 and two adjoining sleeves 11 and 70.
  • the sleeve 70 on the left in the drawing comprises the rear end 1 of the cartridge K.
  • an annular groove 18 is in the base 8 provided which receives the outermost edge of the cartridge end 1. In this way, the adapter A is firmly and tightly attached to the end 1 of the cartridge K.
  • a continuous connecting line 10 is provided in the bottom 8 coaxially to the adapter A.
  • the mouth 9 of this line 10 facing away from the cartridge K is of somewhat expanded design and accommodates the dispensing tube 13 of the valve 12 of the compressed gas container D.
  • the latter is located in the sleeve 11 of the adapter A and is only held in the adapter via its delivery tube 13.
  • Its dispensing valve 12 is designed here as a standard tilt valve, ie it can be opened relative to the compressed gas container D by tilting the dispensing tube 13 to the side.
  • a resiliently inward pushable handle 73 is provided, by means of which the compressed gas container D can be pivoted laterally in the manner shown in FIG. 2 and its valve 12 can thereby be opened.
  • a vent line 71 branches off from the connecting line 10 passing through the bottom 8 and opens into the outside in a nipple 72 on the side of the adapter A.
  • the pressurized gas container D according to FIG. 1 is inserted into the adapter A. Then the vent line 71 is closed with the thumb and the compressed gas container is laterally deflected by means of the handle 73 according to FIG. 2. As a result, the tilting discharge valve of the compressed gas container D is opened and the pressure required to expel the filling material F is built up in the pressure chamber 3 in the cartridge end 1. As soon as this is reached, the handle 73 can be released, so that the compressed gas container returns to its original position, as can be seen in FIG. 1, in which its tilt valve is closed. If the filling material removal is to be interrupted, only the vent line 71 needs to be released; the excess pressure in the pressure chamber 3 then immediately collapses (FIG. 1).
  • the adapter A consists of a relatively dimensionally stable ring body 80 and a base part 81 molded onto it elastically.
  • the ring body 80 has an annular gap 82 and is pushed onto the end 1 of the cartridge K in a press fit, the end of the cartridge being seated in the annular gap.
  • the ring body 80 has somewhat resiliently projecting latching members in the form of latching cams 83 (or possibly also in the form of a corresponding annular bead), which engage behind the valve cover 84 of the compressed gas container D and in this way hold the compressed gas container in the adapter A.
  • the compressed gas container D is arranged upside down, ie with its valve against the rear end of the cartridge.
  • Passage channels 85 are also provided in the ring body 80, which create a connection between the spaces in front and behind the valve cover 84 held by the locking cams 83.
  • the base part 81 is designed to be relatively dimensionally stable in its central area, but is relatively elastic and angled at its edge, so that it can be moved axially resiliently inwards.
  • the center of the base part 81 is designed as a hollow nipple 86, which is provided with a continuous ventilation opening 87 and support ribs 88 for the discharge tube 13 of the valve 12 of the compressed gas container D.
  • the base part 81 is normally in the rest position shown in FIG. 4, in which the support ribs 88 are lifted off the discharge tube 13 of the container valve 12 or at least do not exert any axial pressure thereon.
  • the vent opening 87 is now closed with a finger and at the same time the hollow nipple 86 is pressed axially inward (FIG. 3).
  • the support ribs 88 come into contact with the dispensing tube 13 and also press this axially inward until the container valve 12 finally opens.
  • the compressed gas flows between the support ribs 88 and through the passages 85 into the pressure chamber 3 of the cartridge K located behind the valve cover 84.
  • the desired operating pressure approximately 2.5 bar
  • the pressing force on the hollow nipple 86 is removed, although the vent opening 87 is still kept closed.
  • the filling process goes even further.
  • the finger is simply lifted off the HohInippeI 86 and the pressure chamber 3 is thereby vented (FIG. 4).
  • the adapter A is attached to the cartridge K in the press fit.
  • the adapter could also be welded to the cartridge or connected by a suitable crimp.
  • the adapter A with the pressurized gas container D forms an expulsion device for the filling F located in the cartridge K.
  • This expulsion device can be attached to the cartridge already by the manufacturer or can form an independent unit, which can then be used as an exchangeable expulsion device for many cartridges with a suitable type of fastening can be.
  • the dispensing container according to the invention or the expulsion device for a piston cartridge according to the invention combines all the advantages of the previously known devices of this type without at the same time also having their disadvantages.
  • this container or the expulsion device ensures uniform, continuous discharge of the filling material with the least design effort, while handling is simple and fatigue-free and the container is always automatically depressurized when not in use.

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

Description

Die Erfindung betrifft eine Austreibvorrichtung für einen für hochviskoses Füllgut bestimmten Abgabebehälter gemäss dem Oberbegriff von Patentanspruch 1 (US-A-3217932).The invention relates to an expulsion device for a dispensing container intended for highly viscous contents according to the preamble of claim 1 (US-A-3217932).

Zahlreiche hochviskose bzw. pastöse Produkte wie Dichtmassen, Kitte, Klebstoffe und dergl. werden heute in Kartuschen abgefüllt. Standard-Kartuschen sind zylindrische Behälter, an deren vorderem Ende sich eine meist in eine Spitze laufende Applikationsöffnung befindet und deren anderes Ende durch einen beweglichen Kolben geschlossen ist. Zur Entnahme des Produktes wird die Kartusche in ein Applikationsgerät eingelegt, mittels welchem der Kolben entweder manuell der über Pressluft vorwärts gestossen und dadurch das Produkt ausgetrieben wird.Numerous highly viscous or pasty products such as sealing compounds, putty, adhesives and the like are now filled into cartridges. Standard cartridges are cylindrical containers, at the front end of which there is an application opening that usually runs into a tip and the other end is closed by a movable piston. To remove the product, the cartridge is placed in an application device, by means of which the piston is either pushed forward manually by compressed air and the product is thereby expelled.

Die manuell betätigten Applikationsgeräte arbeiten portionenweise, ermöglichen also keinen gleichmässigen kontinuierlichen Produktestrang. Ausserdem kann die erforderliche Kolbenstange stören und führt das manuelle Pumpen häufig zu rascher Ermüdung.The manually operated application devices work in portions, which means that they do not enable a uniform, continuous product line. In addition, the necessary piston rod can interfere and manual pumping often leads to rapid fatigue.

Die pneumatischen Applikationsgeräte weisen diese Nachteile zwar nicht auf, sind aber dafür konstruktiv relativ aufwendig und von einem Kompressor oder dergl. abhängig, so dass sie praktisch ausschliesslich dem Professional-Bereich vorbehalten sind.The pneumatic application devices do not have these disadvantages, but they are structurally relatively complex and depend on a compressor or the like, so that they are practically exclusively reserved for the professional sector.

Ferner ist. z.B. aus der US-PS 3 568 892 eine Kartuschenpackung bekannt, bei der die das Füllgut enthaltende Kartusche ähnlich wie bei den erwähnten manuell betätigten Packungen in einer Halterung eingespannt ist. Im Unterschied zu den letzteren ist bei dieser Packung jedoch ein Aerosol-Druckbehälter vorgesehen, welcher ein Druckgaspolster zwischen dem Kartuschenkolben und einer dicht mit dem Kartuschenende abschliessenden Stützplatte der Halterung erzeugt. Dieses Druckpolster beaufschlagt den Kolben und treibt dadurch das Füllgut aus. Die Zufuhr von Druckmedium aus dem Druckbehälter in den Druckraum zwischen Kartuschenkolben und Stützplatte wird durch einen auf den Druckbehälter bzw. dessen Ventil wirkenden Triggermechanismus gesteuert.Furthermore is. e.g. a cartridge pack is known from US Pat. No. 3,568,892, in which the cartridge containing the contents is clamped in a holder, similar to the manually operated packs mentioned. In contrast to the latter, however, an aerosol pressure container is provided in this pack, which generates a pressure gas cushion between the cartridge piston and a support plate of the holder, which closes tightly with the cartridge end. This pressure cushion acts on the piston and expels the filling material. The supply of pressure medium from the pressure container into the pressure space between the cartridge piston and the support plate is controlled by a trigger mechanism acting on the pressure container or its valve.

Diese bekannte Kartuschenpackung ist für ein Massenprodukt konstruktiv relativ aufwendig und bietet ausserdem keine Möglichkeit, die Abgabe von Füllgut zu stoppen, solange das Druckpolster noch stark genug ist, den Kolben in der Kartusche vorwärts zu treiben.This known cartridge pack is structurally relatively complex for a mass product and, moreover, offers no possibility of stopping the dispensing of filling material as long as the pressure cushion is still strong enough to drive the piston forward in the cartridge.

Aus der US-PS 3 217 932 ist eine weitere druckgasgetriebene Kartuschenpackung bekannt. Bei dieser Packung befindet sich die Kartusche nicht in einer eigenen Halterung, sondern der Aerosol-Druckbehälter ist mittels eines speziellen Adapters am hinteren Ende der Kartusche befestigt. Im Adapter ist ein Schraubnippel vorgesehen, auf den ein entsprechend geformter Ventilteil des Druckbehälters aufgeschraubt werden kann, wodurch der Druckbehälter dicht an die Kartusche angeschlossen und an ihr festgehalten wird und sich dabei gleichzeitig ein Druckgaspolster im hinteren Kartuschenende aufbaut, das auf den Kartuschenkolben wirkt und diesen vorwärts bewegt, solange ein am vorderen Ende der Kartusche aufgeschraubtes spezielles Applikationsventil geöffnet ist.Another compressed gas-driven cartridge pack is known from US Pat. No. 3,217,932. In this pack, the cartridge is not in its own holder, but the aerosol pressure container is attached to the rear end of the cartridge using a special adapter. A screw nipple is provided in the adapter, onto which a correspondingly shaped valve part of the pressure container can be screwed, as a result of which the pressure container is tightly connected to and held on the cartridge and at the same time a pressure gas cushion builds up in the rear end of the cartridge, which acts on the cartridge piston and the latter moved forward as long as a special application valve screwed onto the front end of the cartridge is open.

Bei dieser bekannten Kartuschenpackung erfolgt die Steuerung der Abgabe also über das Applikationsventil und die Kartusche ist ständig unter Betriebsdruck. Letzteres ist aus verschiedenen Gründen nachteilig. Ferner ist diese bekannte Kartuschenpackung konstruktiv immer noch relativ aufwendig.In this known cartridge pack the dispensing is controlled via the application valve and the cartridge is constantly under operating pressure. The latter is disadvantageous for various reasons. Furthermore, this known cartridge pack is still relatively expensive to construct.

Durch die Erfindung soll eine Austreibvorrichtung für den zur Rede stehenden Abgabebehälter dahingehend verbessert werden, dass einerseits eine extrem einfache und entsprechend konstengünstige Konstruktion und andererseits eine praxisgerechte Betriebs- und Funtionsweise unter Vermeidung der beschriebenen Mängel der bekannten Kartuschenpackungen dieser Art erreicht wird.The invention is intended to improve an expulsion device for the dispensing container in question in such a way that, on the one hand, an extremely simple and correspondingly inexpensive construction and, on the other hand, a practical and functional mode of operation is achieved while avoiding the described defects of the known cartridge packs of this type.

Die erfindungsgemässe Austreibvorrichtung, die diesen Anforderungen gerecht wird, ist im Patentanspruch 1 beschrieben. Bevorzugte Ausgestaltungen und Weiterbildungen ergeben sich aus den abhängigen Ansprüchen.The expulsion device according to the invention, which meets these requirements, is described in claim 1. Preferred refinements and developments result from the dependent claims.

Im folgenden wird die Erfindung anhand der Zeichnung näher erläutert. Es zeigen.

  • Fig. 1 und 2 je einen Längschnitt durch ein erstes Ausführungsbeispiel in zwei verschiedenen Betriebsphasen und
  • Fig. 3 und 4 zwei analoge Darstellungen eines zweiten Ausführungsbeispiels.
The invention is explained in more detail below with reference to the drawing. Show it.
  • 1 and 2 each show a longitudinal section through a first embodiment in two different operating phases and
  • 3 and 4 two analog representations of a second embodiment.

Der dargestellte Abgabebehälter umfasst eine Kunststoff-Kartusche K mit Abgabeöffnung 0 und aufgeschraubter Applikationsspitze S, einen in der Kartusche beweglich angeordneten, dicht sitzenden Kolben P und einen Adapter A für einen Standard-Aerosol-Druckbehälter D. Der Adapter A ist im hinteren, ohne den Adapter offenen Ende 1 der Kartusche K dicht befestigt. Das abzugebende hochviskose bzw. pastöse Füllgut F befindet sich im vorderen, zwischen Kolben P und Abgabeöffnung O liegenden Raum 2 der Kartusche K. Der hintere, zwischen dem Kolben P und dem eingesetzten Adapter A liegende Kartuschenraum ist füllgutfrei und im folgenden als Druckraum 3 bezeichnet.The dispensing container shown comprises a plastic cartridge K with dispensing opening 0 and screwed-on application tip S, a tightly fitting piston P arranged movably in the cartridge and an adapter A for a standard aerosol pressure container D. The adapter A is in the rear, without the Adapter open end 1 of the cartridge K tightly attached. The highly viscous or pasty filling material F to be dispensed is located in the front space 2 of the cartridge K located between the piston P and the dispensing opening O. The rear cartridge space lying between the piston P and the adapter A used is free of filling material and is referred to below as the pressure space 3.

Der Adapter A ist im Längsschnitt H-förmig ausgebildet und besteht aus einem Boden 8 und zwei sich daran anschliessenden Hülsen 11 und 70. Die in der Zeichnung linke Hülse 70 umfasst das hintere Ende 1 der Kartusche K. Zusätzlich ist im Boden 8 eine Ringnut 18 vorgesehen, die den äussersten Rand des Kartuschenendes 1 aufnimmt. Auf diese Weise ist der Adapter A fest und dicht am Ende 1 der Kartusche K befestigt.The adapter A is H-shaped in longitudinal section and consists of a base 8 and two adjoining sleeves 11 and 70. The sleeve 70 on the left in the drawing comprises the rear end 1 of the cartridge K. In addition, an annular groove 18 is in the base 8 provided which receives the outermost edge of the cartridge end 1. In this way, the adapter A is firmly and tightly attached to the end 1 of the cartridge K.

Koaxial zum Adapter A ist im Boden 8 eine durchgehende Verbindungsleitung 10 vorgesehen. Die der Kartusche K abgewandte Mündung 9 dieser Leitung 10 ist etwas erweitert ausgebildet und nimmt das Abgaberöhrchen 13 des Ventils 12 des Druckgasbehälters D in sich auf. Letztere befindet sich in der Hülse 11 des Adapters A und ist lediglich über sein Abgaberöhrchen 13 im Adapter gehaltert. Sein Abgabeventil 12 ist hier als Standard-Kippventil ausgebildet, d.h. es kann durch seitliches Kippen des Abgaberöhrchens 13 relativ zum Druckgasbehälter D geöffnet werden. In der Haltehülse 11 ist ein federnd einwärts drückbarer Handgriff 73 vorgesehen, mittels welchem der Druckgasbehälter D in der in Fig. 2 gezeigten Weise seitlich geschwenkt und dadurch sein Ventil 12 geöffnet werden kann.A continuous connecting line 10 is provided in the bottom 8 coaxially to the adapter A. The mouth 9 of this line 10 facing away from the cartridge K is of somewhat expanded design and accommodates the dispensing tube 13 of the valve 12 of the compressed gas container D. The latter is located in the sleeve 11 of the adapter A and is only held in the adapter via its delivery tube 13. Its dispensing valve 12 is designed here as a standard tilt valve, ie it can be opened relative to the compressed gas container D by tilting the dispensing tube 13 to the side. In the holding sleeve 11, a resiliently inward pushable handle 73 is provided, by means of which the compressed gas container D can be pivoted laterally in the manner shown in FIG. 2 and its valve 12 can thereby be opened.

Von der den Boden 8 durchsetzenden Verbindungsleitung 10 zweigt seitlich eine Entlüftungsleitung 71 ab, welche in einem Nippel 72 seitlich am Adapter A ins Freie mündet.A vent line 71 branches off from the connecting line 10 passing through the bottom 8 and opens into the outside in a nipple 72 on the side of the adapter A.

Zur Inbetriebnahme des Abgabebehälters wird der Druckgasbehälter D gemäss Fig. 1 in den Adapter A eingeführt. Dann wird die Entlüftungsleitung 71 mit dem Daumen verschlossen und der Druckgasbehälter mittels des Handgriffs 73 gemäss Fig. 2 seitlich ausgelenkt. Dadurch wird das Kipp-Abgabeventil des Druckgasbehälters D geöffnet und im Druckraum 3 im Kartuschenende 1 der zum Austreiben des Füllguts F erforderliche Druck aufgebaut. Sobald dieser erreicht ist, kann der Handgriff 73 losgelassen werden, so dass der Druckgasbehälter wieder in seine ursprüngliche, aus Fig. 1 ersichtliche Lage zurückkehrt, in welcher sein Kippventil geschlossen ist. Wenn die Füllgutentnahme unterbrochen werden soll, braucht lediglich die Entlüftungsleitung 71 freigegeben zu werden; der Ueberdruck im Druckraum 3 bricht dann sofort zusammen (Fig. 1).To start up the dispensing container, the pressurized gas container D according to FIG. 1 is inserted into the adapter A. Then the vent line 71 is closed with the thumb and the compressed gas container is laterally deflected by means of the handle 73 according to FIG. 2. As a result, the tilting discharge valve of the compressed gas container D is opened and the pressure required to expel the filling material F is built up in the pressure chamber 3 in the cartridge end 1. As soon as this is reached, the handle 73 can be released, so that the compressed gas container returns to its original position, as can be seen in FIG. 1, in which its tilt valve is closed. If the filling material removal is to be interrupted, only the vent line 71 needs to be released; the excess pressure in the pressure chamber 3 then immediately collapses (FIG. 1).

In den Fig. 3 und 4 ist eine besonders kompakte und konstruktiv extrem einfache und zweckmässige Ausführungsform dargestellt.3 and 4, a particularly compact and structurally extremely simple and functional embodiment is shown.

Bei dieser Ausführungsvariante besteht der Adapter A aus einem relativ formstabilen Ringkörper 80 und einem elastisch an diesem angeformten Bodenteil 81. Der Ringkörper 80 weist einen Ringspalt 82 auf und ist auf das Ende 1 der Kartusche K im Pressitz aufgesteckt, wobei das Kartuschenende im Ringspalt sitzt.In this embodiment variant, the adapter A consists of a relatively dimensionally stable ring body 80 and a base part 81 molded onto it elastically. The ring body 80 has an annular gap 82 and is pushed onto the end 1 of the cartridge K in a press fit, the end of the cartridge being seated in the annular gap.

Im Inneren weist der Ringkörper 80 nach innen etwas federnd vorspringende Rastglieder in Form von Rastnocken 83 (oder eventuell auch in Form eines entsprechenden Ringwulsts) auf, welche den Ventildeckel 84 des Druckgasbehälters D hintergreifen und den Druckgasbehälter auf diese Weise im Adapter A festhalten. Der Druckgasbehälter D ist hier im Unterschied zu allen anderen Ausführungsformen verkehrt angeordnet, also mit seinem Ventil gegen das hintere Kartuschenende. Im Ringkörper 80 sind ferner Durchlasskanäle 85 vorgesehen, welche eine Verbindung zwischen den vor und hinter dem von den Rastnocken 83 gehaltenen Ventildeckel 84 liegenden Räumen schaffen.Inside, the ring body 80 has somewhat resiliently projecting latching members in the form of latching cams 83 (or possibly also in the form of a corresponding annular bead), which engage behind the valve cover 84 of the compressed gas container D and in this way hold the compressed gas container in the adapter A. In contrast to all other embodiments, the compressed gas container D is arranged upside down, ie with its valve against the rear end of the cartridge. Passage channels 85 are also provided in the ring body 80, which create a connection between the spaces in front and behind the valve cover 84 held by the locking cams 83.

Der Bodenteil 81 ist in seinem zentralen Bereich relativ formstabil ausgebildet, an seinem Rand jedoch verhältnismässig elastisch und abgewinkelt, so dass er axial federnd einwärts bewegbar ist. Das Zentrum des Bodenteils 81 ist als Hohlnippel 86 ausgebildet, welcher mit einer durchgehenden Entlüftungsöffnung 87 und Auflagerippen 88 für das Abgaberöhrchen 13 des Ventils 12 des Druckgasbehälters D versehen ist.The base part 81 is designed to be relatively dimensionally stable in its central area, but is relatively elastic and angled at its edge, so that it can be moved axially resiliently inwards. The center of the base part 81 is designed as a hollow nipple 86, which is provided with a continuous ventilation opening 87 and support ribs 88 for the discharge tube 13 of the valve 12 of the compressed gas container D.

Normalerweise befindet sich der Bodenteil 81 in der in Fig. 4 gezeigten Ruhestellung, bei der die Auflagerippen 88 vom Abgaberöhrchen 13 des Behälterventils 12 abgehoben sind oder zumindest keinen axialen Druck auf dieses ausüben.The base part 81 is normally in the rest position shown in FIG. 4, in which the support ribs 88 are lifted off the discharge tube 13 of the container valve 12 or at least do not exert any axial pressure thereon.

Zum Aufbau des für die Füllgutentnahme nötigen Ueberdrucks wird nun die Entlüftungsöffnung 87 mit einem Finger verschlossen und gleichzeitig der Hohlnippel 86 axial einwärts gedrückt (Fig. 3). Dabei kommen die Auflagerippen 88 mit dem Abgaberöhrchen 13 in Kontakt und drücken dieses ebenfalls axial einwärts, bis sich schliesslich das Behälterventil 12 öffnet. Nun strömt das Druckgas zwischen den Auflagerippen 88 und über die Durchlasskanäle 85 in den hinter dem Ventildeckel 84 befindlichen Druckraum 3 der Kartusche K. Wenn der gewünschte Betriebsdruck (ca. 2.5 bar) erreicht ist, wird die Presskraft auf den Hohlnippel 86 weggenommen, wobei allerdings die Entlüftungsöffnung 87 noch verschlossen gehalten wird. Die Füllgutentnahme geht dabei noch weiter. Zum Abbruch der Füllgutentnahme wird ganz einfach der Finger vom HohInippeI 86 abgehoben und die Druckkammer 3 dadurch entlüftet (Fig. 4).To build up the excess pressure required for the removal of the filling material, the vent opening 87 is now closed with a finger and at the same time the hollow nipple 86 is pressed axially inward (FIG. 3). The support ribs 88 come into contact with the dispensing tube 13 and also press this axially inward until the container valve 12 finally opens. Now the compressed gas flows between the support ribs 88 and through the passages 85 into the pressure chamber 3 of the cartridge K located behind the valve cover 84. When the desired operating pressure (approx. 2.5 bar) has been reached, the pressing force on the hollow nipple 86 is removed, although the vent opening 87 is still kept closed. The filling process goes even further. To abort the filling, the finger is simply lifted off the HohInippeI 86 and the pressure chamber 3 is thereby vented (FIG. 4).

Bei den beiden dargestellten Ausführungsvarianten ist der Adapter A im Pressitz an der Kartusche K befestigt. Selbstverständlich sind auch noch andere Befestigungsarten möglich. Beispielsweise könnte der Adapter auch mit der Kartusche verschweisst oder durch eine geeignete Bördelung verbunden sein.In the two embodiment variants shown, the adapter A is attached to the cartridge K in the press fit. Of course, other types of fastening are also possible. For example, the adapter could also be welded to the cartridge or connected by a suitable crimp.

Der Adapter A mit dem Druckgasbehälter D bildet eine Austreibvorrichtung für das in der Kartusche K befindliche Füllgut F. Diese Austreibvorrichtung kann sowohl bereits herstellerseits an der Kartusche befestigt sein als auch eine selbständige Einheit bilden, die dann bei geeigneter Befestigungsart als auswechselbare Austreibvorrichtung für viele Kartuschen verwendet werden kann.The adapter A with the pressurized gas container D forms an expulsion device for the filling F located in the cartridge K. This expulsion device can be attached to the cartridge already by the manufacturer or can form an independent unit, which can then be used as an exchangeable expulsion device for many cartridges with a suitable type of fastening can be.

Der erfindungsgemässe Abgabebehälter bzw. die erfindungsgemässe Austreibvorrichtung für eine Kolbenkartusche vereinigt alle Vorteile der bisher bekannten Geräte dieser Art in sich, ohne gleichzeitig auch deren Nachteile aufzuweisen. Insbesondere ist durch diesen Behälter bzw. die Austreibvorrichtung mit geringstem konstruktivem Aufwand eine gleichmässige kontinuierliche Ausbringung des Füllguts gewährleistet, wobei gleichzeitig die Handhabung einfach und ermüdungsfrei ist und der Behälter bei Nichtgebrauch automatisch stets drucklos ist.The dispensing container according to the invention or the expulsion device for a piston cartridge according to the invention combines all the advantages of the previously known devices of this type without at the same time also having their disadvantages. In particular, this container or the expulsion device ensures uniform, continuous discharge of the filling material with the least design effort, while handling is simple and fatigue-free and the container is always automatically depressurized when not in use.

Claims (7)

1. Expulsion device for a dispensing container for a highly viscous filler material, said dispensing container being in the form of a cartridge (K) having a piston (P) moveably arranged therein and a dispensing orifice (0), comprising an adapter (A) for a pressurized gas container (D) sealingly fastened or fixable to the rear end of the cartridge (K), said adapter (A) accomodating the pressurized gas container (D), sealingly closing the rear end of the cartridge (K) and defining conjointly with the piston (P) a pressure chamber (3) devoid of filler material, said pressurized gas container (D) being connectable with said pressure chamber (3) for generating a pressure charge active upon the piston (P) for driving the piston forward, characterized in that the pressurized gas container (D) is provided with a recloseable valve (12), in that the adapter (A) comprises means (73, 86) for actuating said valve (12), and in that a pressure venting orifice (71, 87) communicating with said pressure chamber (3) is provided in said adapter (A) and is arranged such that it is obturatable by a finger of the operator when the dispensing container is in service.
2. Device according to claim 1, characterized in that the pressure venting orifice (71) opens laterally of said adapter (A).
3. Device according to claim 2, characterized in that the adapter (A) comprises a bottom portion (8) capable of closing said rear end (1) of the cartridge a sleeve-shaped retention means (11) for said pressurized gas container (D) adjacent to said bottom portion (8), in that the valve of the pressuirized gas container is an aerosol valve having a dispensing tubelet (13) serving simultaneously for actuation of the valve and for dispensing the contents of the pressurized gas container, in that the bottom portion (8) is provided with a bore (9) for accommodating said dispensing tubelet (13) of said valve of the pressurized gas container and with a passage (10) for connecting said bore (9) with the interior of the cartridge, and in that said bottom portion (8) is provided with a pressure venting orifice (71) which flow communicates with said passage (10) and opens on a lateral outer surface of the adapter (A).
4. Device according to claim 3, characterized in that the valve of said pressurized gas container (D) is a canting valve, and in that a movable hand grip (73) is provided on said sleeve-shaped retention means (11) of the adapter (A), said pressurized gas container (D) being capable of being pivoted by said hand grip for opening the canting valve.
5. Device according to claim 1, characterized in that the adapter (A) substantially comprises an annulus (80) and a diaphragm (81), in that said annulus (80) is structured to be sealingly connected with the end (1) of said cartridge (K) sand is provided with retention members (83) in its interior, said retention members engaging the cover member (84) of the pressurized gas container (D) for sealingly fastening the cover member to the adapter (A), in that the valve (12) of the pressurized gas container (D) is an aerosol valve having a dispensing tubelet (13) which can be elastically pressed inward for opening, in that the diaphragm (81) is connected with said annulus (80) such that said diaphragm is elastically limited axially inwardly movable to open the valve (12) of said pressurized gas container (D) when in its innermost position, and in that the venting orifice (87) is provided in the central region of the diaphragm (81).
6. Device according to claim 5, characterized in that the central region of the diaphragm (81) defines a hollow nipple (86) and is provided on its inner side with bearing ribs (88) for the dispensing tubelet (13) of said pressurized gas container (D).
7. Device according to anyone of claims 1-6, characterized in that the adapter (A) is provided with an annular groove (18, 82) for accomodating the rear end (1) of the cartridge (K).
EP85101438A 1984-05-03 1985-02-11 Dispensing device for a container containing viscous products Expired - Lifetime EP0160786B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85101438T ATE55751T1 (en) 1984-05-03 1985-02-11 EXPRESSION DEVICE FOR A DELIVERY CONTAINER FOR HIGH-VISCOSE PRODUCTS.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH2142/84 1984-05-03
CH214284 1984-05-03
CH402284 1984-08-23
CH4022/84 1984-08-23

Publications (3)

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EP0160786A2 EP0160786A2 (en) 1985-11-13
EP0160786A3 EP0160786A3 (en) 1988-02-17
EP0160786B1 true EP0160786B1 (en) 1990-08-22

Family

ID=25689625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85101438A Expired - Lifetime EP0160786B1 (en) 1984-05-03 1985-02-11 Dispensing device for a container containing viscous products

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US (1) US4671431A (en)
EP (1) EP0160786B1 (en)
AU (1) AU571329B2 (en)
CA (1) CA1284788C (en)
DE (1) DE3579249D1 (en)
DK (1) DK181585A (en)
ES (1) ES8605169A1 (en)
GR (1) GR850460B (en)
IE (1) IE58284B1 (en)
PT (1) PT80122B (en)

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Also Published As

Publication number Publication date
AU4192085A (en) 1985-11-07
PT80122B (en) 1986-10-23
DE3579249D1 (en) 1990-09-27
GR850460B (en) 1985-06-05
AU571329B2 (en) 1988-04-14
IE851100L (en) 1985-11-03
CA1284788C (en) 1991-06-11
ES542436A0 (en) 1986-04-01
DK181585A (en) 1985-11-04
US4671431A (en) 1987-06-09
IE58284B1 (en) 1993-08-25
DK181585D0 (en) 1985-04-23
PT80122A (en) 1985-04-01
EP0160786A2 (en) 1985-11-13
EP0160786A3 (en) 1988-02-17
ES8605169A1 (en) 1986-04-01

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