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EP0167671B1 - Coating material cartridge for a spray gun and spray gun for the use of such a cartridge - Google Patents

Coating material cartridge for a spray gun and spray gun for the use of such a cartridge Download PDF

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Publication number
EP0167671B1
EP0167671B1 EP84115547A EP84115547A EP0167671B1 EP 0167671 B1 EP0167671 B1 EP 0167671B1 EP 84115547 A EP84115547 A EP 84115547A EP 84115547 A EP84115547 A EP 84115547A EP 0167671 B1 EP0167671 B1 EP 0167671B1
Authority
EP
European Patent Office
Prior art keywords
element according
tank
spray
seat
shaft
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
Application number
EP84115547A
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German (de)
French (fr)
Other versions
EP0167671A2 (en
EP0167671A3 (en
Inventor
Manfred Ihmels
Hartmut Ihmels
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84115547T priority Critical patent/ATE41612T1/en
Publication of EP0167671A2 publication Critical patent/EP0167671A2/en
Publication of EP0167671A3 publication Critical patent/EP0167671A3/en
Application granted granted Critical
Publication of EP0167671B1 publication Critical patent/EP0167671B1/en
Expired legal-status Critical Current

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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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • 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
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2478—Gun with a container which, in normal use, is located above the gun
    • 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
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • 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
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2435—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other

Definitions

  • the invention relates to an element for supplying spray material to a spray gun, in which the parts surrounding and guiding the spray means comprise a tank, a spray nozzle including a nozzle needle and a connecting channel in a web between the tank and the spray nozzle.
  • the inventors have set themselves the task of creating an element of the type described in the introduction, which is suitable for filling and packaging with conventional devices. This object is achieved in that a tight seat is provided at the entrance of the connecting channel, to which the tank can be connected as an exchangeable unit after opening its lid.
  • the tank can be designed as a simple conventional cylindrical can, for example with a diameter of 84 mm and a height of 130 mm, as is customary for paint cans.
  • the spray nozzle and the connecting channel with the seat for the tank at the entrance of the connecting channel are designed as a foot-shaped body which can be inserted into a slip shoe-shaped seat of the gun body.
  • a foot which is separate from the tank, can be used regularly over a longer working period if it is carried out without substantial interruption, so that this foot is used in conjunction with a whole series of paint cans which are also to be disposed of after use and thus the entire cost of the replacement be reduced from element and foot.
  • the foot is preferably provided with a funnel-shaped or cup-shaped upper part, with which it is put over the opened paint can from top to bottom after the correct dose of hardening agent has been introduced into the opened paint can and mixed thoroughly.
  • the dose of hardener required for each paint can can be supplied in a small chamber, for example in the form of a can cap, which is attached to the bottom or the lid.
  • the foot may be made of plastic, while the paint can is conventional, e.g. made of metallic material.
  • the needle of the spray nozzle can be secured in the closed position, for example by a bolt, in such a way that the nozzle is only opened after the foot has been inserted and in the rhythm of the spraying work.
  • the spray gun shown in the drawing and the element are used to apply hardening, flowable substances (spray media), in particular a mixture of plastic and a plastic hardener on surfaces by means of a spray nozzle 6, which has a tank 3 for the spray medium and a feed line 4 on the handle 5 of the gun body can be connected to a compressed air source.
  • the spray head 2 - cf. in particular Fig. 6 - contains a nozzle 6, the outlet opening voltage 7 locked at rest by the tip of a nozzle needle 8 and opened by withdrawing the needle.
  • 1 channels are provided in the gun body, which open into a distribution chamber 10 of the spray head 2 which encloses the front end of the nozzle 6.
  • This distribution chamber is formed by the front of the gun body and a screw flap 11 with a central bore, which forms an annular opening with the nozzle end to produce a concentric atomizer for the spray.
  • the omnidirectional jet produced in this way can be shaped by auxiliary jets inclined towards one another from two sides to form a flat jet with more or less great extent in a plane perpendicular to the plane of the drawing with an adjustable inclination to the plane of symmetry.
  • the screw cap is provided with auxiliary channels directed from two sides against the omnidirectional jet.
  • a spring 18 presses on the pin head via a pin 19.
  • the nozzle needle 8 By pivoting a lever 20 in the direction of the arrow about an axis 21 and pivoting a driving fork 22 which is coupled to it and engages on the back of the needle head 10, the nozzle needle 8 can be retracted against the spring 18 and thereby the nozzle outlet opening 7 of the spray can can be released.
  • a needle valve in the connecting channel from the feed line 4 to the spray head 2 is also opened, preferably with a certain advance, so that the compressed air flow starts even before the spray nozzle opens.
  • the spring 18 and the bolt 19 are arranged in a special housing part, the so-called closure cap 24, which can be folded down and which can be pulled off and folded down on a rod 25 with limit stop from the front housing part or gun body 1.
  • the cap is provided with a handle 27.
  • the closure cap 24 is secured in its working position by a stretch connection with plug pins 28 which engage in holes in the gun body 1 and a locking with a clamping lever 29.
  • the construction corresponds to that of conventional spray guns (see e.g. DE 2 412 743).
  • the entirety of the parts enclosing and guiding the spray medium, consisting of the tank container 3, the spray nozzle 6 including the nozzle needle 8 and a connecting channel 30 in a web 33 between the reservoir 3 and the spray nozzle 6 is designed to be easily replaceable as an element.
  • the gun body 1 is provided with a slip shoe-shaped seat 32 for the element 31, and the transition from the tank 3 to the spray nozzle 6 is designed as a foot 33 (with sole and heel 35) which can be inserted into the seat 32.
  • a pin 36 of the closure cap 24 engaging in the heel 35 serves to secure this foot in the working position.
  • nozzle 6 and web 33 with connecting channel 30 are made in one piece.
  • the nozzle needle 8 is - fixed in the closed position, but retractable when used - in the nozzle 6. After the work is finished, the element 31 is thrown away, possibly also returned to the supplier for cleaning and reuse.
  • the tank 3 for the plastic K is provided with a small chamber 59 for the hardener to be introduced into the plastic before use.
  • the tank also contains a mixer 46/47 for plastic K and hardener H, consisting of a perforated disc 46 with a shaft 47.
  • the nozzle needle is provided with a piston 50 which, in the rest position, closes the connecting channel 30 between the tank 3 and the spray can 6 and, in the retracted working position, keeps the passage opening provided for the rear of the nozzle needle closed to the outside.
  • the spray nozzle 6 is provided on the outside with a frontal collar with which it abuts against a stop with the gun body 1.
  • the tank 3 is a commercially available cylindrical can with a lid 61 and a bottom 62.
  • This can is filled with paint, in particular plastic paint (without hardening agent), and is introduced as a separate insert into a sealing seat 60 of the gun.
  • This seat 60 is located at the entrance of the connecting channel 30, which together with the spray nozzle 6 and its needle 8 forms the foot.
  • the foot at the entrance of the connecting channel 30 is provided with a funnel-shaped cup 58, which, when placed upside down, is placed on the open tank from top to bottom.
  • the hardening agent is introduced into the paint can by emptying the tube 64.
  • the mixer handle (not shown in the drawing) is inserted, and after tearing the tear seam 70 in the flange 68, the mixture of paint and hardener is applied by and caused movement of the mixer.
  • the bottom is curved inwards so that the end of the shaft does not protrude beyond the flat boundary surface of the cylindrical box.
  • Fig. 5 shows an embodiment with a mixer, which is provided with a separate shaft (not shown in the drawing), the introduced through an insertion 77 with tear seam 78 and can be coupled to the perforated disc 46 in the bowl 58.
  • FIG. 5 also show means for locking the needle 8 in the nozzle 6 in its closed position, for example by a bolt 76a in FIG. 5 on the underside of the perforated disk 46, which engages in the groove 75 of the needle 8.
  • the bolt 76b is connected to a lever arm 82 which protrudes from the nozzle body and is released when the element 31 is inserted, so that it releases the nozzle needle for actuation with reciprocation under the influence of the spring 18 of the gun.
  • a bolt 76c is attached to a lever arm-like projection 83, which is released to release nozzle needle 8 by a pin 36 of the cap 24.
  • paint cans of other designs especially of the lid and bottom, such as. B. with a lid 61, which, as shown in FIGS. 11 and 12, are provided with a ring pull closure 67.
  • the foot 33 could also be firmly integrated into the gun body, as in multi-colored spray guns.

Landscapes

  • Nozzles (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Catching Or Destruction (AREA)
  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A spray medium inset for a spraying pistol includes a spraying nozzle, and a needle for selectively closing the nozzle spray opening. The inset includes a connecting channel terminating in a cylindrical recess having an annular recess in the wall surrounding the cylindrical recess that snugly accommodates an annular ridge around the opening of a spray medium tank detachably secured to the connecting channel in the cylindrical recess. The connecting channel also includes a plug for normally keeping the spray opening closed with the jet needle. The tank has a concave bottom supporting a mixing shaft in a claw plug with a frangible annular zipper zone around the shaft. The mixing shaft is formed with a plug that engages a seat in the connecting channel bolt member that keeps the connecting channel closed and the spray opening closed with the shaft in its original extended position. A portion of the mixing shaft extends outside the concave bottom to function as a handle and extends into a hardener compartment containing hardener covered by a removable cover.

Description

Die Erfindung bezieht sich auf ein Element zur Sprühmittelversorgung einer Sprühpistole, bei dem die Sprühmittel umschließenden und führenden Teile einen Tank, eine Sprühdüse einschließlich Düsennadel und einen Verbindungskanal in einem Steg zwischen Tank und Sprühdüse umfassen.The invention relates to an element for supplying spray material to a spray gun, in which the parts surrounding and guiding the spray means comprise a tank, a spray nozzle including a nozzle needle and a connecting channel in a web between the tank and the spray nozzle.

Ein derart ausgebildetes Element zur Sprühmittelversorgung ist nach der WO 81/03 131 bekannt. Bei dem bekannten Element bilden alle Teile, die während der Arbeit mit Sprühmittel in Berührung kommen, eine auswechselbar an der Sprühpistole gehaltene bauliche Einheit. Durch diese Gestaltung ergeben sich Probleme für den Hersteller und Lieferanten der mit dem Sprühmittel gefüllten Sprühmitteleinsätze an die Benutzer der für die Verwendung dieser Elemente eingerichteten Sprühpistolen. Wo das Sprühmittel abgefüllt wird, sind Spezialeinrichtungen erforderlich, um die Elemente mit ihrer ungewöhnlichen Form in den Fließstraßen der Anlage zu transportieren, abzufüllen, zu verschließen und für den Versand an die Verbraucher zu verpacken.An element designed in this way for the supply of spray medium is known from WO 81/03 131. In the known element, all parts which come into contact with spraying agent during work form a structural unit which is held interchangeably on the spray gun. This design creates problems for the manufacturer and supplier of the spray medium inserts filled with the spray medium to the users of the spray pistols set up for the use of these elements. Where the spray is filled, special equipment is required to transport, fill, seal and pack the elements with their unusual shape in the system's flow streets and to package them for dispatch to consumers.

Die Erfinder haben sich die Aufgabe gestellt, ein Element der eingangs bezeichneten Art zu schaffen, das sich für ein Abfüllen und Verpacken mit herkömmlichen Einrichtungen eignet. Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß am Eingang des Verbindungskanales ein dichter Sitz vorgesehen ist, an den der Tank nach Öffnen seines Deckels als austauschbare Einheit anschließbar ist.The inventors have set themselves the task of creating an element of the type described in the introduction, which is suitable for filling and packaging with conventional devices. This object is achieved in that a tight seat is provided at the entrance of the connecting channel, to which the tank can be connected as an exchangeable unit after opening its lid.

Damit ist die vorteilhafte Möglichkeit gegeben, daß der Tank als einfache herkömmliche zylindrische Dose ausgebildet werden kann, beispielsweise mit einem Durchmesser von 84 mm und einer Höhe von 130 mm, so wie es für Farbdosen üblich ist.This provides the advantageous possibility that the tank can be designed as a simple conventional cylindrical can, for example with a diameter of 84 mm and a height of 130 mm, as is customary for paint cans.

Alle Teile der Pistole, welche nach der Arbeit mit dem Sprühmittel benetzt sind, sollten weggeworfen und durch neue Teile ersetzt werden, die zweckmäßig so einfach und billig ausgeführt sind, daß die Kosten für ihren Ersatz geringer sind als die Kosten zur Reinigung. Zu diesem Zweck werden erfindungsgemäß Sprühdüse und Verbindungskanal mit dem Sitz für den Tank am Eingang des Verbindungskanals als fußförmiger Körper ausgebildet, der in einen schlupfschuhförmigen Sitz des Pistolenkörpers eingesetzt werden kann. Ein solcher, vom Tank getrennter Fuß kann regelmäßig über eine längere Arbeitsdauer, wenn sie ohne wesentliche Unterbrechung erfolgt, benutzt werden, so daß dieser Fuß in Verbindung mit einer ganzen Reihe von nach dem Gebrauch ebenfalls wegzuwerfenden Farbdosen genutzt und damit die gesamten Kosten für den Ersatz von Element und Fuß herabgesetzt werden.All parts of the gun, which are wetted with the spray after work, should be thrown away and replaced with new parts, which are expediently so simple and cheap that the cost of their replacement is less than the cost of cleaning. For this purpose, according to the invention, the spray nozzle and the connecting channel with the seat for the tank at the entrance of the connecting channel are designed as a foot-shaped body which can be inserted into a slip shoe-shaped seat of the gun body. Such a foot, which is separate from the tank, can be used regularly over a longer working period if it is carried out without substantial interruption, so that this foot is used in conjunction with a whole series of paint cans which are also to be disposed of after use and thus the entire cost of the replacement be reduced from element and foot.

Der Fuß ist vorzugsweise mit einem trichterförmigen bzw. napfförmigen Oberteil versehen, mit dem er von oben nach unten über die geöffnete Farbdose gestülpt wird, nachdem die richtige Dosis von Härtemittel in die geöffnete Farbdose eingebracht und gründlich eingemischt worden ist. Die für jede Farbdose erforderliche Dosis des Härtemittels kann in einer kleinen Kammer, beispielsweise in Form einer Dosenkappe, die am Boden oder am Deckel abngebracht ist, mitgeliefert werden.The foot is preferably provided with a funnel-shaped or cup-shaped upper part, with which it is put over the opened paint can from top to bottom after the correct dose of hardening agent has been introduced into the opened paint can and mixed thoroughly. The dose of hardener required for each paint can can be supplied in a small chamber, for example in the form of a can cap, which is attached to the bottom or the lid.

Der Fuß mag aus Kunststoff gefertigt werden, während die Farbdose herkömmlich, z.B. aus metallischem Material, bestehen kann.The foot may be made of plastic, while the paint can is conventional, e.g. made of metallic material.

Die Nadel der Sprühdüse kann in der Schließstellung beispielsweise durch einen Riegel gesichert werden, derart, daß die Düse erst nach dem Einbringen des Fußes und im Rhythmus der Sprüharbeit geöffnet wird.The needle of the spray nozzle can be secured in the closed position, for example by a bolt, in such a way that the nozzle is only opened after the foot has been inserted and in the rhythm of the spraying work.

Zum besseren Verständnis der vorliegenden Erfindung und um zu zeigen, wie sie verwirklicht wird, wird sie mit Bezug auf die Zeichnung an Beispielen näher erläutert. Darin ist:

  • Fig. 1 Schnitt eines zweiteiligen Elements mit noch voneinander getrennten Teilen,
  • Fig. 2 eine Seitenansicht zur Fig. 1,
  • Fig. 3 Seitenansicht einer Sprühpistole zum Gebrauch mit Elementen nach Fig. 1 und 2 oder Elementen nach den weiteren Figuren,
  • Fig. 4 Seitenansicht der Pistole mit eingebrachtem Element,
  • Fig. 5 im Schnitt ein Element anderer Ausführungsform,
  • Fig. 6 Seitenansicht, teilweise im Schnitt durch eine Sprühpistole mit dem Fuß,
  • Fig. 7, 8 weitere Ausführungsformen des Elements,
  • Fig. 9, 10 Ausführungsformen des Fußes mit Einrichtung zur Verriegelung der Düsennadel und
  • Fig. 11, 12 einen Tankdeckel mit Ring-Pull-Verschluß in Draufsicht und Querschnitt.
For a better understanding of the present invention and to show how it is implemented, it is explained in more detail with reference to the drawing using examples. In it is:
  • 1 section of a two-part element with parts still separated from one another,
  • 2 is a side view of FIG. 1,
  • 3 side view of a spray gun for use with elements according to FIGS. 1 and 2 or elements according to the other figures,
  • 4 side view of the gun with inserted element,
  • 5 in section an element of another embodiment,
  • 6 side view, partly in section through a spray gun with the foot,
  • 7, 8 further embodiments of the element,
  • Fig. 9, 10 embodiments of the foot with means for locking the nozzle needle and
  • 11, 12 a tank cap with ring-pull closure in plan view and cross section.

Bei den im folgenden beschriebenen Elementen handelt es sich um Weiterentwicklungen des von den Anmeldern als Wegwerfeinheit konzipierten Vorratsbehälters für Spritzpistolen gemäß WO 81/ 03131. Um den Vergleich mit den früheren Ausführungsformen eines solchen Elementes zu erleichtern, werden im folgenden für einander entsprechende Teile von Element und Pistole die Bezugszeichen aus WO 81/03131 übernommen. Das Wesen der früheren und gleicherweise der hier beschriebenen Elemente besteht darin, daß in ihnen nur diejenigen Teile der Pistole vereinigt werden, welche bei der Arbeit vom Sprühmittel benetzt und wegen drohender Verfestigung des Sprühmittels während längerer Arbeitspausen gereinigt werden müßten, um nach der Pause erneut zum Einsatz kommen zu können. Dazu gehören insbesondere der aus Düse 6 und Steg 33 mit Verbindungskanal 30 zur Düse bestehende Fuß einerseits und der Tank 3 andererseits. Die in der Zeichnung dargestellte Sprühpistole und das Element dienen zum Aufbringen von erhärtenden fließfähigen Stoffen (Sprühmedien), insbesondere eines Gemisches aus Kunststoff und einem Kunststoffhärtemittel auf Oberflächen mittels einer Sprühdüse 6, die mit einem Tank 3 für das Sprühmedium und über eine Zuleitung 4 am Heft 5 des Pistolenkörpers an eine Druckluftquelle anschließbar ist. Der Sprühkopf 2 - vgl. insbesondere Fig. 6 - enthält eine Düse 6, deren Austrittsöffnung 7 im Ruhezustand durch die Spitze einer Düsennadel 8 zugehalten und durch Zurückziehen der Nadel geöffnet wird. Zur Zuleitung der Druckluft sind in dem Pistolenkörper 1 Kanäle vorgesehen, die in eine das vordere Ende der Düse 6 umschließende Verteilerkammer 10 des Sprühkopfes 2 einmünden. Diese Verteilerkammer wird gebildet durch die Frontseite des Pistolenkörpers und eine Schraubklappe 11 mit einer zentralen Bohrung, die mit dem Düsenende eine ringförmige Öffnung zur Erzeugung eines konzentrischen Zerstäuberstrahlers für das Sprühmittel bildet. Der dadurch erzeugte Rundstrahl kann durch von zwei Seiten geneigt gegeneinander gerichtete Hilfsstrahlen zu einem Flachstrahl mit mehr oder weniger großer Ausdehnung in einer zur Zeichenebene senkrechten Ebene mit einstellbarer Neigung zur Symmetrieebene umgeformt werden. Hierzu ist die Schraubkappe mit von zwei Seiten gegen den Rundstrahl gerichteten Hilfskanälen versehen. Eine Feder 18 drückt über einen Bolzen 19 auf den Nadelkopf. Durch Verschwenken eines Hebels 20 in Pfeilrichtung um eine Achse 21 und Verschwenken einer mit ihm gekoppelten, an der Rückseite des Nadelkopfes 10 angreifenden Mitnehmergabel 22 kann die Düsennadel 8 gegen die Feder 18 zurückgezogen und dadurch die Düsenaustrittsöffnung 7 der Sprühdose freigegeben werden.The elements described below are further developments of the storage container for spray guns designed by the applicants as a disposable unit in accordance with WO 81/03131. In order to facilitate comparison with the previous embodiments of such an element, parts of element and corresponding to one another are described below Gun the reference numbers from WO 81/03131 adopted. The essence of the earlier and likewise of the elements described here is that only those parts of the pistol are combined which would be wetted by the spray at work and would have to be cleaned during longer breaks due to the risk of solidification of the spray, in order to return to after the break To be able to use it. These include in particular the foot consisting of nozzle 6 and web 33 with connecting channel 30 to the nozzle on the one hand and tank 3 on the other hand. The spray gun shown in the drawing and the element are used to apply hardening, flowable substances (spray media), in particular a mixture of plastic and a plastic hardener on surfaces by means of a spray nozzle 6, which has a tank 3 for the spray medium and a feed line 4 on the handle 5 of the gun body can be connected to a compressed air source. The spray head 2 - cf. in particular Fig. 6 - contains a nozzle 6, the outlet opening voltage 7 locked at rest by the tip of a nozzle needle 8 and opened by withdrawing the needle. To supply the compressed air, 1 channels are provided in the gun body, which open into a distribution chamber 10 of the spray head 2 which encloses the front end of the nozzle 6. This distribution chamber is formed by the front of the gun body and a screw flap 11 with a central bore, which forms an annular opening with the nozzle end to produce a concentric atomizer for the spray. The omnidirectional jet produced in this way can be shaped by auxiliary jets inclined towards one another from two sides to form a flat jet with more or less great extent in a plane perpendicular to the plane of the drawing with an adjustable inclination to the plane of symmetry. For this purpose, the screw cap is provided with auxiliary channels directed from two sides against the omnidirectional jet. A spring 18 presses on the pin head via a pin 19. By pivoting a lever 20 in the direction of the arrow about an axis 21 and pivoting a driving fork 22 which is coupled to it and engages on the back of the needle head 10, the nozzle needle 8 can be retracted against the spring 18 and thereby the nozzle outlet opening 7 of the spray can can be released.

Mit Betätigung des Hebels 20 wird auch ein Nadelventil im Verbindungskanal von der Zuleitung 4 zum Sprühkopf 2 geöffnet, und zwar vorzugsweise mit einer gewissen Voreilung, so daß der Druckluftstrom bereits einsetzt, bevor sich die Sprühdüse öffnet. Feder 18 und Bolzen 19 sind in einem eine horizontale Achse abklappbaren besonderen Gehäuseteil, der sogenannten Verschlußkappe 24, angeordnet, die auf einer Stange 25 mit Anschlagsbegrenzung vom vorderen Gehäuseteil bzw. Pistolenkörper 1 abziehbar und abklappbar ist. Die Verschlußkappe ist mit einer Handhabe 27 versehen. Durch eine Streckverbindung mit Steckstiften 28, die in Löcher des Pistolenkörpers 1 eingreifen und eine Verriegelung mit Spannhebel 29 wird die Verschlußkappe 24 in ihrer Arbeitslage gesichert.When the lever 20 is actuated, a needle valve in the connecting channel from the feed line 4 to the spray head 2 is also opened, preferably with a certain advance, so that the compressed air flow starts even before the spray nozzle opens. The spring 18 and the bolt 19 are arranged in a special housing part, the so-called closure cap 24, which can be folded down and which can be pulled off and folded down on a rod 25 with limit stop from the front housing part or gun body 1. The cap is provided with a handle 27. The closure cap 24 is secured in its working position by a stretch connection with plug pins 28 which engage in holes in the gun body 1 and a locking with a clamping lever 29.

Insoweit entspricht die Konstruktion derjenigen herkömmlicher Spritzpistolen (vgl. z.B. DE 2 412 743). Abweichend hiervon ist die Gesamtheit der das Sprühmittel umschließenden und führenden Teile, bestehend aus dem Tankbehälter 3, der Sprühdüse 6 einschließlich Düsennadel 8 und einem Verbindungskanal 30 in einem Steg 33 zwischen Vorratsbehälter 3 und Sprühdüse 6 leicht auswechselbar als Element ausgebildet.In this respect, the construction corresponds to that of conventional spray guns (see e.g. DE 2 412 743). Deviating from this, the entirety of the parts enclosing and guiding the spray medium, consisting of the tank container 3, the spray nozzle 6 including the nozzle needle 8 and a connecting channel 30 in a web 33 between the reservoir 3 and the spray nozzle 6 is designed to be easily replaceable as an element.

Der Pistolenkörper 1 ist mit einem schlupfschuhförmigen Sitz 32 für das Element 31 versehen, und der Übergang vom Tank 3 zur Sprühdüse 6 ist als in den Sitz 32 einsteckbarer Fuß 33 (mit Sohle und Ferse 35) ausgebildet. Ein in die Ferse 35 eingreifender Stift 36 der Verschlußkappe 24 dient als Sicherung dieses Fußes in der Arbeitslage. In dem Element 31 sind Düse 6 und Steg 33 mit Verbindungskanal 30 aus einem Stück hergestellt. Die Düsennadel 8 ist - fest in der Verschlußstellung, aber zurückziehbar bei Ingebrauchnahme - in die Düse 6 eingesetzt. Nachdem die Arbeit beendet ist, wird das Element 31 weggeworfen, gegebenenfalls auch an den Lieferanten zur Reinigung und Wiederverwendung zurückgegeben.The gun body 1 is provided with a slip shoe-shaped seat 32 for the element 31, and the transition from the tank 3 to the spray nozzle 6 is designed as a foot 33 (with sole and heel 35) which can be inserted into the seat 32. A pin 36 of the closure cap 24 engaging in the heel 35 serves to secure this foot in the working position. In element 31, nozzle 6 and web 33 with connecting channel 30 are made in one piece. The nozzle needle 8 is - fixed in the closed position, but retractable when used - in the nozzle 6. After the work is finished, the element 31 is thrown away, possibly also returned to the supplier for cleaning and reuse.

Der Tank 3 für den Kunststoff K ist mit einer kleinen Kammer 59 für das vor Gebrauch in den Kunststoff einzubringende Härtemittel versehen.The tank 3 for the plastic K is provided with a small chamber 59 for the hardener to be introduced into the plastic before use.

Der Tank enthält ferner einen Mischer 46/47 für Kunststoff K und Härtemittel H, bestehend aus einer Lochscheibe 46 mit Schaft 47.The tank also contains a mixer 46/47 for plastic K and hardener H, consisting of a perforated disc 46 with a shaft 47.

Die Düsennadel ist mit einem Kolben 50 versehen, der in der Ruhelage den Verbindungskanal 30 zwischen Tank 3 und Sprühdose 6 verschließt und in zurückgezogener Arbeitsstellung die für die Düsennadel hinten vorgesehene Durchtrittsöffnung nach außen verschlossen hält. Die Sprühdüse 6 ist außen mit einem frontalen Bund versehen, mit dem sie gegen einen Anschlag mit Pistolenkörper 1 stößt.The nozzle needle is provided with a piston 50 which, in the rest position, closes the connecting channel 30 between the tank 3 and the spray can 6 and, in the retracted working position, keeps the passage opening provided for the rear of the nozzle needle closed to the outside. The spray nozzle 6 is provided on the outside with a frontal collar with which it abuts against a stop with the gun body 1.

Der Tank 3 ist eine handelsübliche zylindrische Dose mit Deckel 61 und Boden 62. Diese Dose ist mit Farbe, insbesondere Kunststoffarbe (ohne Härtemittel), gefüllt und wird als getrennter Einsatz in einen abdichtenden Sitz 60 der Pistole eingebracht. Dieser Sitz 60 befindet sich am Eingang des Verbindungskanals 30, der zusammen mit der Sprühdüse 6 und ihrer Nadel 8 den Fuß bildet. Zur Aufnahme des Tanks 3 ist der Fuß am Eingang des Verbindungskanals 30 mit einem trichterförmigen Napf 58 versehen, welcher, über Kopf gestellt, von oben nach unten auf den geöffneten Tank gestülpt wird. Zuvor wird nach Abnahme des Tankdeckels 61 (Fig. 1 muß man sich dabei also auf den Kopf gestellt vorstellen) das Härtemittel durch Entleeren der Tube 64 in die Farbdose eingebracht. Nach Einsatz der Farbdose und Eindrücken der Schaftkupplung mit den Kupplungsteilen 47a und 47b wird das ganze wieder aufrecht gestellt, der Mischergriff (in der Zeichnung nicht mit dargestellt) eingebracht und nach Aufreißen der Reißnaht 70 im Flansch 68 die Mischung von Farbe und Härtemittel durch Auf- und Abbewegung des Mischers herbeigeführt.The tank 3 is a commercially available cylindrical can with a lid 61 and a bottom 62. This can is filled with paint, in particular plastic paint (without hardening agent), and is introduced as a separate insert into a sealing seat 60 of the gun. This seat 60 is located at the entrance of the connecting channel 30, which together with the spray nozzle 6 and its needle 8 forms the foot. To hold the tank 3, the foot at the entrance of the connecting channel 30 is provided with a funnel-shaped cup 58, which, when placed upside down, is placed on the open tank from top to bottom. Before removing the tank cap 61 (Fig. 1 must therefore be turned upside down), the hardening agent is introduced into the paint can by emptying the tube 64. After inserting the paint can and pressing in the shaft coupling with the coupling parts 47a and 47b, the whole thing is put upright again, the mixer handle (not shown in the drawing) is inserted, and after tearing the tear seam 70 in the flange 68, the mixture of paint and hardener is applied by and caused movement of the mixer.

Beim Mischen ist ein Fließen des Sprühmittels zur Düse 6 durch einen Stopfen 73 ausgeschlossen, der am unteren Ende des Mischers in den Verbindungskanal 30 eingreift. Ist der Mischvorgang beendet, so wird der Mischer völlig hochgezogen und mit seinem Bauch 74 im Deckel bzw. Boden 62 der Farbdose eingeklemmt. Er wird nach Entleerung des Tanks 3 mit diesem weggeworfen bzw. dem Recycling zugeführt. Der Bauch 74 besteht aus einer Gruppe von Rippen und ist dadurch luftdurchlässig, damit das Sprühmittel beim Betätigen der Sprühpistole ungehindert aus dem Tank abgesaugt werden kann.When mixing, a flow of the spray medium to the nozzle 6 through a stopper 73 is excluded, which engages in the connecting channel 30 at the lower end of the mixer. When the mixing process has ended, the mixer is pulled up completely and its belly 74 is clamped in the lid or bottom 62 of the paint can. After the tank 3 has been emptied, it is thrown away with it or sent for recycling. The belly 74 consists of a group of ribs and is therefore permeable to air, so that the spray can be sucked out of the tank unhindered when the spray gun is actuated.

Der Boden ist nach innen gewölbt, so daß das Schaftende nicht über die ebene Begrenzungsfläche der zylindrischen Dose hinwegragt.The bottom is curved inwards so that the end of the shaft does not protrude beyond the flat boundary surface of the cylindrical box.

Weitere Ausführungsformen des Einsatzes sind in Fig. 7-12 dargestellt.Further embodiments of the insert are shown in Figs. 7-12.

Fig. 5 zeigt eine Ausführungsform mit einem Mischer, der mit einem getrennten Schaft versehen ist (in der Zeichnung nicht mit dargestellt), der durch eine Einführung 77 mit Reißnaht 78 eingebracht und mit der Lochscheibe 46 im Napf 58 gekoppelt werden kann.Fig. 5 shows an embodiment with a mixer, which is provided with a separate shaft (not shown in the drawing), the introduced through an insertion 77 with tear seam 78 and can be coupled to the perforated disc 46 in the bowl 58.

Fig. 5, 9 und 10 zeigen überdies Mittel zur Verriegelung der Nadel 8 in der Düse 6 in ihrer Schließstellung, beispielsweise durch einen Riegel 76a in Fig. 5 an der Unterseite der Lochscheibe 46, welcher in die Rille 75 der Nadel 8 eingreift. In Fig. 9 ist der Riegel 76b mit einem Hebelarm 82 verbunden, der aus dem Düsenkörper herausragt und bei Einführung des Elementes 31 gelöst wird, so daß er die Düsennadel zur Betätigung mit Hin-und Herbewegung unter dem Einfluß der Feder 18 der Pistole freigibt. In Fig. 10 ist ein Riegel 76c an einem hebelarmartigen Vorsprung 83 angebracht, der zur Freigabe von Düsennadel 8 durch einen Stift 36 der Verschlußkappe 24 gelöst wird.5, 9 and 10 also show means for locking the needle 8 in the nozzle 6 in its closed position, for example by a bolt 76a in FIG. 5 on the underside of the perforated disk 46, which engages in the groove 75 of the needle 8. In Fig. 9, the bolt 76b is connected to a lever arm 82 which protrudes from the nozzle body and is released when the element 31 is inserted, so that it releases the nozzle needle for actuation with reciprocation under the influence of the spring 18 of the gun. In Fig. 10, a bolt 76c is attached to a lever arm-like projection 83, which is released to release nozzle needle 8 by a pin 36 of the cap 24.

Im Rahmen der Erfindung sind noch mancherlei Abänderungen und andere Ausführungen möglich. So könnten auch Farbdosen anderer Ausführungen, insbesondere von Deckel und Boden, wie z. B. mit einem Deckel 61, eingesetzt werden, die, wie in Fig. 11 und 12 dargestellt, mit einem Ring-Pull-Verschluß 67 versehen sind. Insbesondere bei Sprühpistolen zur Verarbeitung von Sprühmitteln, welche nicht erhärten, könnte der Fuß 33 auch, wie in mehrfarbigen Sprühpistolen, fest in den Pistolenkörper integriert sein.Various modifications and other designs are possible within the scope of the invention. So could paint cans of other designs, especially of the lid and bottom, such as. B. with a lid 61, which, as shown in FIGS. 11 and 12, are provided with a ring pull closure 67. In particular in the case of spray guns for processing spraying agents which do not harden, the foot 33 could also be firmly integrated into the gun body, as in multi-colored spray guns.

Claims (25)

1. Element for supplying a spray compound to a spray gun, wherein the parts which enclose and guide the spray compound comprise a tank, a spray jet including a jet needle, and a connecting duct in a bridge region between tank and spray jet, characterised in that at the inlet of the connecting duct (30) there is provided a leak-tight seat (60) to which the tank (3) is connectable as an exchangeable unit, after its lid (61) has been opened.
2. Element according to claim 1, characterised in that the spray jet (6) and the connecting duct (30), together with the seat (60), form at the seat (60), form at the inlet of the connecting duct an exchangeable foot (6/33) which is insertable into a seat (32), which resembles a slip-on shoe, in the gun body (1).
3. Element according to claim 1 or 2, characterised in that the tank (3) consists of a can (56).
4. Element according to claim 2, characterised in that the foot (6/33) and/or the connecting duct (30) are provided with a funnel-like upper part (58) which is insertable downwards from above, i.e. upside down, onto an opened tank (3).
5. Element according to claim 4, characterised in that the seat (60) is arranged in the upper part (58) of the foot (6/33).
6. Element according to any one of the preceding claims, characterised in that the tank (3) is provided with a small chamber (59) for the hardening compound which is required to be introduced into the spray compound before work commences.
7. Element according to claim 6, characterised in that the small chamber (59) consists of a cap of the tank (3), for inserting a tube (64) with the hardening compound.
8. Element according to any one of the preceding claims, characterised in that the foot (6/33) is made of synthetic plastics material.
9. Element according to claim 8, characterised in that the tank (3) is made of metallic material.
10. Element according to claim 1, characterised in that the seat (60) is dimensioned suitably for accommodating normal commercial cans (56), with a diameter of e.g. 84 mm and a height of 130 mm.
11. Element according to anyone of the preceding claims, with a mixer, characterised in that the shaft (47) of the mixer (46, 47) is secured in the bottom (62) of the tank (3).
12. Element according to claim 11, characterised in that the shaft (47) is connected with the bottom (62) of the tank (3) by means of a flange (68).
13. Element according to any one of the preceding claims, characterised in that the bottom (62) of the tank (3) is of funnel-shaped construction and is provided with a pull-open seam (70).
14. Element according to claim 13, characterised in that the pull-open seam (70) is arranged in the flange (68) of the shaft (47).
15. Element according to any one of the claims 12 to 14, characterised in that the flange (68) is secured in the bottom (62) of the tank (3) with a resilient rubber claw-type plug (72).
16. Element according to any one of the claims 13 to 15, characterised in that the outer end of the shaft (47) is connectable with a handle.
17. Element according to any one of the claims 12 to 16, characterised in that the shaft (47) of the mixer is provided with a plug (73) for closing the connecting duct (30) and is locked in a raised position whereby the connecting duct is open.
18. Element according to claim 17, characterised in that the shaft (47) of the mixer is provided with an air-permeable convex region (74) which in the upwardly-drawn position is held clampingly in the opening of the bottom (62).
19. Element according to any one of the claims 1 to 18, characterised in that a bolt (76a, b, c) is provided, which locks the jet needle (8) in the closed position.
20. Element according to claim 19, characterised in that the mixer is connected with a bolt (76a) for locking the jet needle (8).
21. Element according to claim 20, characterised in that in the lowermost position of the mixer, the bolt (76a) engages into a groove (75) of the jet needle (8).
22. Element according to claim 20, characterised by a bolt (76b, c) in the form of a barb or a locking lever, which engages on the needle (8).
23. Element according to claim 22, characterised in that the bolt (76b) is mounted on the spray jet (6) and projects with a lever arm (82) out of the foot contour and into the contour region of the socket-like seat (32), so that when the spray jet (6) is introduced into the seat (32), said bolt (76b) is displaced out of the locking position and into the release position.
24. Element according to claim 22, characterised in that the stop catch (76c) is mounted on the bridge region (33) and is provided with a projection (83) which ist displaced by the closure flap (24) and thereby moves the stop catch into the release position.
25. Use of the element according to claims 1 to 24 in a spray gun known per se.
EP84115547A 1983-12-21 1984-12-15 Coating material cartridge for a spray gun and spray gun for the use of such a cartridge Expired EP0167671B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115547T ATE41612T1 (en) 1983-12-21 1984-12-15 AEROSOL INSERT FOR SPRAY GUNS AND AEROSOL FOR THE USE OF SUCH INSERT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3346165A DE3346165C2 (en) 1983-12-21 1983-12-21 Spray agent insert for spray guns
DE3346165 1983-12-21

Publications (3)

Publication Number Publication Date
EP0167671A2 EP0167671A2 (en) 1986-01-15
EP0167671A3 EP0167671A3 (en) 1986-03-12
EP0167671B1 true EP0167671B1 (en) 1989-03-22

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ID=6217548

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EP84115547A Expired EP0167671B1 (en) 1983-12-21 1984-12-15 Coating material cartridge for a spray gun and spray gun for the use of such a cartridge

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US (1) US4811904A (en)
EP (1) EP0167671B1 (en)
JP (1) JPS60227857A (en)
KR (1) KR850004407A (en)
AT (1) ATE41612T1 (en)
AU (1) AU575890B2 (en)
BR (1) BR8406639A (en)
CA (1) CA1266376A (en)
DE (2) DE3346165C2 (en)
DK (1) DK613884A (en)
ES (1) ES294892Y (en)
FI (1) FI844987L (en)
IE (1) IE56404B1 (en)
NO (1) NO160972C (en)
NZ (1) NZ210658A (en)
ZA (1) ZA849850B (en)

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AU3680384A (en) 1985-06-27
KR850004407A (en) 1985-07-15
IE56404B1 (en) 1991-07-17
ES294892U (en) 1987-10-16
DK613884A (en) 1985-06-22
US4811904A (en) 1989-03-14
BR8406639A (en) 1985-10-15
EP0167671A2 (en) 1986-01-15
NZ210658A (en) 1987-11-27
ES294892Y (en) 1989-03-16
FI844987L (en) 1985-06-22
FI844987A0 (en) 1984-12-18
NO845123L (en) 1985-06-24
AU575890B2 (en) 1988-08-11
CA1266376A (en) 1990-03-06
NO160972B (en) 1989-03-13
NO160972C (en) 1989-06-21
EP0167671A3 (en) 1986-03-12
ZA849850B (en) 1985-08-28
DE3346165A1 (en) 1985-07-11
IE843294L (en) 1985-06-21
DE3346165C2 (en) 1987-04-30
ATE41612T1 (en) 1989-04-15
DE3477351D1 (en) 1989-04-27
JPS60227857A (en) 1985-11-13
DK613884D0 (en) 1984-12-20

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