EP1963025B1 - Spray gun - Google Patents

Spray gun Download PDF

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Publication number
EP1963025B1
EP1963025B1 EP06817479A EP06817479A EP1963025B1 EP 1963025 B1 EP1963025 B1 EP 1963025B1 EP 06817479 A EP06817479 A EP 06817479A EP 06817479 A EP06817479 A EP 06817479A EP 1963025 B1 EP1963025 B1 EP 1963025B1
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EP
European Patent Office
Prior art keywords
spray gun
pressure vessels
valves
mixing chamber
gun according
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Not-in-force
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EP06817479A
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German (de)
French (fr)
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EP1963025A2 (en
Inventor
Josef Mikl
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • 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
    • B65D83/382—Details of the container body with closures that must be perforated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • 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
    • B65D83/16—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 characterised by the actuating means
    • B65D83/20—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 characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B65D83/207—Actuators comprising a manually operated valve and being attachable to the aerosol container, e.g. downstream a valve fitted to the container; Actuators associated to container valves with valve seats located outside the aerosol 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
    • B65D83/68—Dispensing two or more contents, e.g. sequential dispensing or simultaneous dispensing of two or more products without mixing them
    • B65D83/682—Dispensing two or more contents, e.g. sequential dispensing or simultaneous dispensing of two or more products without mixing them the products being first separated, but finally mixed, e.g. in a dispensing head

Definitions

  • the invention relates to a spray gun for producing a two-component foam according to the preamble of patent claim 1.
  • foams for the connection of components and for the production of insulation.
  • foams are inexpensive to produce and easy to use.
  • a particular advantage of the foams is that they swell after application in a predefined manner, so that any voids are filled and a secure connection of the components is produced.
  • both one-component systems and two-component systems are used.
  • the advantage of the one-component systems is that only a single starting material is needed and the application devices are simple and uncomplicated.
  • a disadvantage of these systems, however, is that one-component foams harden only by absorbing water from the humidity or from the adjacent building materials, so that the curing time is relatively long.
  • Two-component systems can be set to cure very quickly so that much faster work progress can be achieved because the components can be processed almost immediately after bonding.
  • the previously known devices for the production and processing of two-component foam are relatively complex, so that such systems have not yet fully enforced.
  • the US 2002/0038826 A shows a spray device, which is intended for connection to supply hoses for the two components. This complicates handling on the construction site. In addition, the flow paths for the media are long, so that the quality of the mixture is unsatisfactory. Similar disadvantages apply to a solution as described in the US 6,158,624 A is described.
  • the object of the present invention is to avoid these disadvantages and to provide a spray gun which has a simple structure and is capable of producing a high-quality foam.
  • an optimal handling of the pressure vessel is to be achieved, both as regards the flow paths, and as regards the weight distribution of the device.
  • Another object of the present invention is to develop a spray gun that operates reliably even in harsh working conditions and is easy to clean and maintain.
  • Essential to the invention is a simple construction and the fact that the starting components meet only within a removable nozzle tip, so that hardening of the working materials inside the device is prevented during breaks in work. It has been found that directly actuated needle valves have significant advantages over other valve systems, such as check valves, as they may become clogged in the nozzle tip if used improperly, resulting in significant back pressure.
  • the needle valves it is possible to safely prevent unwanted returns of material from the nozzle tip in the delivery channels, so that a blockage or damage to the essential components of the spray gun is prevented. It is only necessary in such a case to replace the nozzle tip in order to restore the functional state. It is particularly favorable when the valve needles are biased by springs into their closed position. The opening movement takes place by mechanical drive against the action of the spring. In this way, a predefined closing force of the needle valves can be adjusted.
  • a particularly simple structure can be achieved by providing a common actuating device for the two valve pins.
  • a particularly favored embodiment variant of the invention is characterized in that the valve needles are arranged in the interior of the delivery channels.
  • the feed cross sections for the starting components have a simple and rectilinear shape, so that material deposits and the like can be safely avoided.
  • the delivery channels are arranged side by side in parallel and that the connection points for the pressure vessels are provided in the axial direction one behind the other.
  • a particularly simple structure also results from the fact that the nozzle tip has a flange which rests on the metering valves, wherein the mixing chamber is arranged directly on the flange. In this way, after a replacement of the nozzle tip, a functional spray gun is available without requiring special cleaning work.
  • the preparation of the spray gun according to the invention can be substantially simplified in that the spray gun has a gun body in which the delivery channels are formed, which is made as an injection molded part. Of particular advantage in this context, it is when these metering valves are designed as inserts in the gun body.
  • the spray gun according to the invention consists of a gun body 1, on which two pressure vessels 2, 3 are placed. In the front region of the gun body, a nozzle tip 4 is detachably fastened with a clamp 5.
  • the pressure vessels 2, 3 are placed over connecting pieces 6, 7 in the region of holes 8, 9 so that the connection points are offset in the axial direction against each other.
  • the holes 8, 9 open into each delivery channels 10, 11, which in Longitudinal direction of the gun body 1 extend.
  • valve needles 12, 13 are arranged to be movable in the axial direction, other tip metering valves 14, 15 are provided.
  • Each metering valve 14, 15 consists of a cone 16, 17 which opens to the nozzle tip 4 and is covered by a flange 18 which is integrally formed on the nozzle tip 4.
  • a mixing chamber 19 is provided, which serves to mix the two components which are received in the pressure vessels 2, 3.
  • valve needles 12, 13 are biased by a spring 20 in the closed position.
  • a trigger 21 in the region of the handle 22 of the gun body 1 makes it possible to open the metering valves 14, 15 at the same time.
  • the present invention makes it possible to produce spray guns which produce two-component foam in a simple manner, are easy to clean and pleasant to handle.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The invention relates to a spray gun for generating a two-component foam, comprising two pressure vessels (2, 3) for accommodating the original components, ducts which are arranged parallel next to each other inside a gun member (1) in order to convey the original components, dosing valves for metering the original components, and a mixing chamber for producing the two-component foam. The dosing valves are embodied as needle valves, each of which is provided with a valve port that opens directly into a removable nozzle tip (4) inside which the mixing chamber is disposed. In order to create a simple structure while making the spray gun easy to clean, the connection points for the pressure vessels are placed one behind another in an axial direction while the pressure vessels (2, 3) are positioned substantially perpendicular to the gun member.

Description

Die Erfindung betrifft eine Sprühpistole zur Erzeugung eines Zwei-Komponentenschaums gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a spray gun for producing a two-component foam according to the preamble of patent claim 1.

Es ist bekannt, im Bauwesen PU-Schäume zur Verbindung von Bauelementen und zur Herstellung von Isolierungen zu verwenden. Solche Schäume sind kostengünstig herstellbar und leicht anwendbar. Ein besonderer Vorteil der Schäume besteht darin, dass sie nach dem Aufbringen in vordefinierter Weise quellen, so dass eventuelle Hohlräume ausgefüllt werden und eine sichere Verbindung der Bauteile hergestellt wird. In der Praxis werden dabei sowohl einkomponentige Systeme als auch zweikomponentige Systeme verwendet. Der Vorteil der EinKomponentensysteme besteht darin, dass nur ein einziges Ausgangsmaterial benötigt wird und die Vorrichtungen zum Aufbringen einfach und unkompliziert sind. Nachteilig bei diesen Systemen ist jedoch, dass einkomponentige Schäume erst durch Aufnahme von Wasser aus der Luftfeuchtigkeit oder aus den angrenzenden Baumaterialien aushärten, so dass die Aushärtezeit relativ lang ist.It is known to use in construction PU foams for the connection of components and for the production of insulation. Such foams are inexpensive to produce and easy to use. A particular advantage of the foams is that they swell after application in a predefined manner, so that any voids are filled and a secure connection of the components is produced. In practice, both one-component systems and two-component systems are used. The advantage of the one-component systems is that only a single starting material is needed and the application devices are simple and uncomplicated. A disadvantage of these systems, however, is that one-component foams harden only by absorbing water from the humidity or from the adjacent building materials, so that the curing time is relatively long.

Zwei-Komponentensysteme können so eingestellt werden, dass die Aushärtung sehr schnell erfolgt, so dass ein wesentlich schnellerer Arbeitsfortschritt erzielt werden kann, da die Bauteile praktisch unmittelbar nach dem Verkleben weiterbearbeitet werden können. Die bisher bekannten Vorrichtungen zur Herstellung und Verarbeitung von Zwei-Komponenteschaum sind jedoch relativ aufwändig, so dass sich solche Systeme bisher noch nicht vollständig durchgesetzt haben.Two-component systems can be set to cure very quickly so that much faster work progress can be achieved because the components can be processed almost immediately after bonding. However, the previously known devices for the production and processing of two-component foam are relatively complex, so that such systems have not yet fully enforced.

Aus der US 5,092,492 A ist eine Sprühpistole zur Dosierung und Mischung von zwei Ausgangskomponenten bekannt, mit der ein Zwei-Komponentenschaum hergestellt werden kann. Die Dosierung erfolgt dabei über ein System von Dosierkolben, Rückschlagventilen und Betätigungsorganen, so dass sich insgesamt ein komplexer Aufbau ergibt.From the US 5,092,492 A is a spray gun for metering and mixing of two starting components is known, with which a two-component foam can be produced. The dosage is carried out via a system of dosing, check valves and actuators, so that the overall result is a complex structure.

Weiters sind Lösungen bekannt, bei denen Spraydosen verwendet werden, die durch eine gemeinsame Betätigungsvorrichtung betätigt werden, um ihren Inhalt in eine gemeinsame Düse abzugeben. Solche Lösungen sind beispielsweise in der US 4,880,143 A , der US 5,634,571 A oder der US 3,575,319 A gezeigt. Solche Vorrichtungen besitzen zwar einen relativ einfachen Aufbau, sind aber zur Herstellung eines Schaums hoher Qualität nicht geeignet, da die Dosierung der Ausgangsmaterialien nicht reproduzierbar ist und auch die Durchmischung nicht in befriedigender Weise erfolgt.Furthermore, solutions are known in which spray cans are used, which are actuated by a common actuator to deliver their contents into a common nozzle. Such solutions are for example in the US 4,880,143 A , of the US 5,634,571 A or the US 3,575,319 A shown. Although such devices have a relatively simple structure, but are not suitable for producing a foam of high quality, since the dosage of the starting materials is not reproducible and the mixing does not take place in a satisfactory manner.

Die US 2002/0038826 A zeigt eine Sprühvorrichtung, die für den Anschluss an Zufuhrschläuche für die beiden Komponenten bestimmt ist. Dadurch wird die Handhabung auf der Baustelle erschwert. Außerdem sind die Strömungswege für die Medien lang, so dass die Qualität der Mischung unbefriedigend ist. Ähnliche Nachteile gelten für eine Lösung, wie sie in der US 6,158,624 A beschrieben ist.The US 2002/0038826 A shows a spray device, which is intended for connection to supply hoses for the two components. This complicates handling on the construction site. In addition, the flow paths for the media are long, so that the quality of the mixture is unsatisfactory. Similar disadvantages apply to a solution as described in the US 6,158,624 A is described.

Eine weitere bekannte Lösung ist in der DE 87 05 675 U offenbart, die eine Sprühpistole gemäß dem Oberbegriff von Anspruch 1 offenbart.Another known solution is in the DE 87 05 675 U which discloses a spray gun according to the preamble of claim 1.

Aufgabe der vorliegenden Erfindung ist es, diese Nachteile zu vermeiden und eine Sprühpistole anzugeben, die einen einfachen Aufbau aufweist und in der Lage ist, einen Schaum hoher Qualität herzustellen. Insbesondere soll eine für die Handhabung optimale Anordnung der Druckbehälter erreicht werden, sowohl was die Strömungswege betrifft, als auch was die Gewichtsverteilung der Vorrichtung angeht.The object of the present invention is to avoid these disadvantages and to provide a spray gun which has a simple structure and is capable of producing a high-quality foam. In particular, an optimal handling of the pressure vessel is to be achieved, both as regards the flow paths, and as regards the weight distribution of the device.

Eine weitere Aufgabe der vorliegenden Erfindung ist es, eine Sprühpistole zu entwickeln, die auch unter rauen Arbeitsbedingungen zuverlässig arbeitet und leicht zu reinigen und zu warten ist.Another object of the present invention is to develop a spray gun that operates reliably even in harsh working conditions and is easy to clean and maintain.

Erfindungsgemäß werden diese Aufgaben durch die Merkmale von Patentanspruch 1 gelöst.According to the invention, these objects are achieved by the features of claim 1.

Wesentlich an der Erfindung ist ein einfacher Aufbau und die Tatsache, dass die Ausgangskomponenten erst innerhalb einer abnehmbaren Düsenspitze aufeinandertreffen, so dass ein Aushärten der Arbeitsmaterialien im Inneren der Vorrichtung in Arbeitspausen verhindert wird. Es hat sich herausgestellt, dass direkt betätigte Nadelventile gegenüber anderen Ventilsystemen, wie etwa Rückschlagventilen, erhebliche Vorteile haben, da es bei nicht sachgemäßer Verwendung zu einer Verstopfung der Düsenspitze kommen kann, was zu einem erheblichen Gegendruck führt. Durch die Nadelventile ist es möglich, unerwünschte Rückflüsse von Material aus der Düsenspitze in die Förderkanäle sicher zu verhindern, so dass eine Verstopfung oder Beschädigung der wesentlichen Bauteile der Sprühpistole verhindert wird. Es ist in einem solchen Fall nur erforderlich, die Düsenspitze auszuwechseln, um den funktionsfähigen Zustand wieder herzustellen. Besonders günstig ist es, wenn die Ventilnadeln durch Federn in ihre geschlossene Stellung vorgespannt sind. Die Öffnungsbewegung erfolgt dabei durch mechanischen Antrieb gegen die Wirkung der Feder. Auf diese Weise kann eine vordefinierte Schließkraft der Nadelventile eingestellt werden.Essential to the invention is a simple construction and the fact that the starting components meet only within a removable nozzle tip, so that hardening of the working materials inside the device is prevented during breaks in work. It has been found that directly actuated needle valves have significant advantages over other valve systems, such as check valves, as they may become clogged in the nozzle tip if used improperly, resulting in significant back pressure. By the needle valves, it is possible to safely prevent unwanted returns of material from the nozzle tip in the delivery channels, so that a blockage or damage to the essential components of the spray gun is prevented. It is only necessary in such a case to replace the nozzle tip in order to restore the functional state. It is particularly favorable when the valve needles are biased by springs into their closed position. The opening movement takes place by mechanical drive against the action of the spring. In this way, a predefined closing force of the needle valves can be adjusted.

Ein besonders einfacher Aufbau kann dadurch erreicht werden, dass eine gemeinsame Betätigungsvorrichtung für die beiden Ventilnadeln vorgesehen ist. Eine besonders begünstigte Ausführungsvariante der Erfindung ist dadurch gekennzeichnet, dass die Ventilnadeln im Inneren der Förderkanäle angeordnet sind. Auf diese Weise kann nicht nur ein einfacher und kompakter Aufbau erzielt werden, es wird auch erreicht, dass die Förderquerschnitte für die Ausgangskomponenten eine einfache und geradlinige Form haben, so dass Materialablagerungen und dergleichen sicher vermieden werden können. In dieser Hinsicht ist es auch wichtig, dass die Förderkanäle nebeneinander parallel angeordnet sind und dass die Anschlussstellen für die Druckbehälter in Axialrichtung hintereinander vorgesehen sind.A particularly simple structure can be achieved by providing a common actuating device for the two valve pins. A particularly favored embodiment variant of the invention is characterized in that the valve needles are arranged in the interior of the delivery channels. In this way, not only a simple and compact construction can be achieved, it is also achieved that the feed cross sections for the starting components have a simple and rectilinear shape, so that material deposits and the like can be safely avoided. In this regard, it is also important that the delivery channels are arranged side by side in parallel and that the connection points for the pressure vessels are provided in the axial direction one behind the other.

Ein besonders einfacher Aufbau ergibt sich auch dadurch, dass die Düsenspitze einen Flansch aufweist, der auf den Dosierventilen aufliegt, wobei die Mischkammer unmittelbar am Flansch angeordnet ist. Auf diese Weise steht nach einem Auswechseln der Düsenspitze eine funktionstüchtige Sprühpistole zur Verfügung, ohne besondere Reinigungsarbeiten erforderlich zu machen.A particularly simple structure also results from the fact that the nozzle tip has a flange which rests on the metering valves, wherein the mixing chamber is arranged directly on the flange. In this way, after a replacement of the nozzle tip, a functional spray gun is available without requiring special cleaning work.

Die Herstellung der erfindungsgemäßen Sprühpistole kann dadurch wesentlich vereinfacht werden, dass die Sprühpistole einen Pistolenkörper aufweist, in dem die Förderkanäle ausgebildet sind, das als Spritzgussteil hergestellt ist. Von besonderem Vorteil in diesem Zusammenhang ist es, wenn diese Dosierventile als Einlegeteile im Pistolenkörper ausgebildet sind.The preparation of the spray gun according to the invention can be substantially simplified in that the spray gun has a gun body in which the delivery channels are formed, which is made as an injection molded part. Of particular advantage in this context, it is when these metering valves are designed as inserts in the gun body.

In der Folge wird die vorliegende Erfindung anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert. Es zeigen:

Fig. 1
eine seitliche Ansicht einer Ausführungsvariante der Erfindung;
Fig. 2
eine Vorderansicht der Ausführungsvariante von Fig. 1;
Fig. 3
eine Ansicht von oben;
Fig. 4
eine seitliche Ansicht mit abgenommenen Druckbehältern in vergrößertem Maßstab; und
Fig. 5
einen Schnitt nach Linie V-V in Fig. 4.
As a result, the present invention will be explained in more detail with reference to the embodiments illustrated in FIGS. Show it:
Fig. 1
a side view of an embodiment of the invention;
Fig. 2
a front view of the embodiment of Fig. 1 ;
Fig. 3
a view from above;
Fig. 4
a side view with removed pressure vessels on an enlarged scale; and
Fig. 5
a section along line VV in Fig. 4 ,

Die erfindungsgemäße Sprühpistole besteht aus einem Pistolenkörper 1, auf den zwei Druckbehälter 2, 3 aufgesetzt sind. Im vorderen Bereich des Pistolenkörpers ist eine Düsenspitze 4 abnehmbar mit einer Klammer 5 befestigt.The spray gun according to the invention consists of a gun body 1, on which two pressure vessels 2, 3 are placed. In the front region of the gun body, a nozzle tip 4 is detachably fastened with a clamp 5.

Die Druckbehälter 2, 3 sind über Anschlussstücke 6, 7 im Bereich von Bohrungen 8, 9 so aufgesetzt, dass die Anschlussstellen in Axialrichtung gegeneinander versetzt sind. Die Bohrungen 8, 9 münden jeweils in Förderkanäle 10, 11, die sich in Längsrichtung des Pistolenkörpers 1 erstrecken. In den Förderkanälen 10, 11 sind Ventilnadeln 12, 13 in Axialrichtung beweglich angeordnet, anderen Spitze Dosierventile 14, 15 vorgesehen sind. Jedes Dosierventil 14, 15 besteht aus einem Konus 16, 17, der sich zur Düsenspitze 4 hin öffnet und durch einen Flansch 18 abgedeckt ist, der an der Düsenspitze 4 angeformt ist. Unmittelbar hinter dem Flansch 18 ist eine Mischkammer 19 vorgesehen, die dazu dient, die beiden Komponenten, die in den Druckbehältern 2, 3 aufgenommen sind, zu mischen.The pressure vessels 2, 3 are placed over connecting pieces 6, 7 in the region of holes 8, 9 so that the connection points are offset in the axial direction against each other. The holes 8, 9 open into each delivery channels 10, 11, which in Longitudinal direction of the gun body 1 extend. In the conveying channels 10, 11 valve needles 12, 13 are arranged to be movable in the axial direction, other tip metering valves 14, 15 are provided. Each metering valve 14, 15 consists of a cone 16, 17 which opens to the nozzle tip 4 and is covered by a flange 18 which is integrally formed on the nozzle tip 4. Immediately behind the flange 18, a mixing chamber 19 is provided, which serves to mix the two components which are received in the pressure vessels 2, 3.

Die Ventilnadeln 12, 13 werden von einer Feder 20 in die geschlossene Stellung vorgespannt. Ein Abzugshebel 21 im Bereich des Griffes 22 des Pistolenkörpers 1 ermöglicht es, die Dosierventile 14, 15 gleichzeitig zu öffnen.The valve needles 12, 13 are biased by a spring 20 in the closed position. A trigger 21 in the region of the handle 22 of the gun body 1 makes it possible to open the metering valves 14, 15 at the same time.

Die vorliegende Erfindung ermöglicht es, Sprühpistolen herzustellen, die Zwei-Komponentenschaum in einfacher Weise herstellen, leicht zu reinigen und angenehm in der Handhabung sind.The present invention makes it possible to produce spray guns which produce two-component foam in a simple manner, are easy to clean and pleasant to handle.

Claims (7)

  1. A spray gun for generating a two-component foam, comprising conveying ducts (10, 11) which are arranged parallel next to each other inside a gun member (1) in order to convey the starting components, dosing valves (14, 15) for metering the starting components, and a mixing chamber (19) for producing the two-component foam, with the dosing valves (14, 15) being arranged as needle valves, each of which is provided with a valve port that opens directly into a removable nozzle tip (4) inside which the mixing chamber (19) is disposed, characterised in that two pressure vessels (2, 3) are provided for accommodating the starting components, the connection points for the pressure vessels are placed one behind another in the axial direction and the pressure vessels (2, 3) are positioned substantially perpendicular to the gun member.
  2. A spray gun according to claim 1, characterised in that the valve needles (12, 13) are pre-tensioned in their closed position by at least one spring (20).
  3. A spray gun according to claim 1 or 2, characterised in that a common actuating apparatus (21) is provided for both valve needles (12, 13).
  4. A spray gun according to one of the claims 1 to 3, characterised in that the valve needles (12, 13) are arranged in the interior of the conveying ducts (10, 11).
  5. A spray gun according to one of the claims 1 to 4, characterised in that the nozzle tip (4) comprises a flange which rests on the dosing valves (14, 15), with the mixing chamber (19) being arranged directly on the flange.
  6. A spray gun according to one of the claims 1 to 5, characterised in that the spray gun has a gun member (1) in which conveying ducts (10, 11) are arranged and which is made as an injection-molded part.
  7. A spray gun according to claim 6, characterised in that the dosing valves (14, 15) are arranged as inserted parts in the gun member (1).
EP06817479A 2005-12-15 2006-12-07 Spray gun Not-in-force EP1963025B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0200805A AT503046B1 (en) 2005-12-15 2005-12-15 SPRAY GUN
PCT/AT2006/000504 WO2007068014A2 (en) 2005-12-15 2006-12-07 Spray gun

Publications (2)

Publication Number Publication Date
EP1963025A2 EP1963025A2 (en) 2008-09-03
EP1963025B1 true EP1963025B1 (en) 2010-03-10

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ID=38017124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06817479A Not-in-force EP1963025B1 (en) 2005-12-15 2006-12-07 Spray gun

Country Status (11)

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US (1) US20090045225A1 (en)
EP (1) EP1963025B1 (en)
KR (1) KR20080077285A (en)
CN (1) CN101330981B (en)
AT (2) AT503046B1 (en)
BR (1) BRPI0619898A2 (en)
CA (1) CA2633159A1 (en)
DE (1) DE502006006418D1 (en)
MX (1) MX2008007671A (en)
RU (1) RU2417127C2 (en)
WO (1) WO2007068014A2 (en)

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CN101722119B (en) * 2009-12-02 2012-11-14 浙江奥利达气动工具股份有限公司 Double-spray-head spray gun
USD668150S1 (en) * 2010-11-09 2012-10-02 S.C. Johnson & Son, Inc. Container with retaining device
CN102327830B (en) * 2011-08-26 2013-10-16 宁波李氏实业有限公司 Spray gun system
US9802213B2 (en) * 2012-03-06 2017-10-31 3M Innovative Properties Company Spray gun having internal boost passageway
KR102111467B1 (en) * 2012-03-23 2020-05-15 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Spray gun barrel with inseparable nozzle
CN103537391B (en) * 2013-09-29 2015-12-23 广州有色金属研究院 A kind of adjustable binary channels dust feeder
BE1025578B1 (en) * 2018-03-16 2019-04-24 Altachem Nv LIQUID RELEASE GUN AND METHOD FOR DELIVING 1K POLYURETHANE FOAM
RU195626U1 (en) * 2019-12-03 2020-02-03 Радис Мулланурович Миргалимов SPRAY DEVICE FOR APPLICATION OF TWO-COMPONENT COMPOSITION
RU195633U1 (en) * 2019-12-03 2020-02-03 Радис Мулланурович Миргалимов DEVICE FOR APPLICATION OF TWO-COMPONENT COMPOSITION
CN111215261B (en) * 2020-01-19 2020-11-10 浙江科技学院 Double-tube polyurethane material mixing spray gun
CZ309108B6 (en) * 2020-05-07 2022-02-02 GreFix s.r.o. Method of applying a mixture based on lump rubber and resin to form a non-slip surface layer and apparatus for carrying out this method
CN216936871U (en) * 2022-01-25 2022-07-12 石家庄东翔化工有限公司 Up-down parallel glue gun for polyurethane foam gap filler construction

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Also Published As

Publication number Publication date
CN101330981A (en) 2008-12-24
AT503046B1 (en) 2009-05-15
WO2007068014A2 (en) 2007-06-21
US20090045225A1 (en) 2009-02-19
WO2007068014A3 (en) 2007-08-02
RU2417127C2 (en) 2011-04-27
BRPI0619898A2 (en) 2011-10-25
KR20080077285A (en) 2008-08-21
MX2008007671A (en) 2008-09-26
ATE460231T1 (en) 2010-03-15
AT503046A1 (en) 2007-07-15
RU2008128846A (en) 2010-01-20
CN101330981B (en) 2011-07-20
EP1963025A2 (en) 2008-09-03
CA2633159A1 (en) 2007-06-21
DE502006006418D1 (en) 2010-04-22

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