EP1880771B1 - Spray gun - Google Patents
Spray gun Download PDFInfo
- Publication number
- EP1880771B1 EP1880771B1 EP06015298A EP06015298A EP1880771B1 EP 1880771 B1 EP1880771 B1 EP 1880771B1 EP 06015298 A EP06015298 A EP 06015298A EP 06015298 A EP06015298 A EP 06015298A EP 1880771 B1 EP1880771 B1 EP 1880771B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air cap
- spray gun
- holding element
- union nut
- gun
- 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.)
- Not-in-force
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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
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
-
- 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
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
- B05B7/083—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter comprising rotatable spray shaping gas jet outlets
-
- 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 a spray gun for spraying paints and similar viscous media, according to the preamble of claim 1.
- Spray guns of this type are offered for years by J. Wagner GmbH, Markdorf, under the name W 850 E and have proven themselves in practice well.
- By rotating the air cap within 90 ° three different shapes can be set to perform different tasks, namely a horizontally oriented flat jet, an omnidirectional jet and a vertically oriented flat jet.
- the two positions of the nut are defined exclusively by the fact that these end stops are provided.
- the object of the invention is therefore to form the spray gun of the aforementioned type in such a way that in a short time, a change in the shape of the spray jet can be made without causing the air cap is to be touched and without soiling are to be accepted.
- a beam shape change should rather be accomplished only by pressing the nut or an equivalent holding member.
- the construction cost, by means of which this is possible, should be kept low, yet should always be made to make a reliable setting with ease of use in the short term.
- the position-oriented mounting of the union nut or the holding member, after which the desired spray jet is present, should be reliably achievable.
- the air cap can in this case be inserted into the union nut or the holding member and firmly connected with these, for example, be welded. But it is also possible to produce the air cap and the union nut or the holding member in one piece and form as an injection molded part.
- the air cap by means of one or more radially, preferably projecting from the outer circumferential surface and uniformly distributed over the circumference arranged cams, which engage in incorporated into the nut or the retaining member longitudinal grooves, be positively connected thereto, wherein the air cap can also be inserted into a ring and firmly connected to this, on which the radially projecting engaging in longitudinal grooves of the union nut or the holding member cams are formed.
- the holding member in the scattered spray jets associated angular positions should be positionally oriented with the supporting this component, such as the gun body, locked.
- the guide members may in this case be formed as guide pins and the receiving these cams with offset in the axial direction recesses for receiving the guide pins in the air cap assigned operating positions, but it is also possible to make the guide members as radially resilient lobes and these receiving cams with in the circumferential direction, preferably uniformly distributed locking cams to be provided, between which the lobes are latched in the operating position associated with the air cap.
- a spring preferably a corrugated spring washer, through which the air cap against the nozzle, an intermediate piece or an extension tube is pressed, so always a good investment of the air cap the atomizer nozzle is guaranteed.
- the air cap on the housing of the spray gun facing end should be sealed by a labyrinth seal on the supporting this component to prevent air leakage, also this ensures an exact coaxial alignment of the atomizer to the air cap.
- a spray gun is formed according to the invention, it is possible to accomplish an injection jet setting in a short time and without any difficulties, without causing contamination. Due to the fact that the air cap is connected in a form-fitting manner to the union nut or the holding member in the circumferential direction, only the union nut or holding member is to be rotated accordingly in order to control the air supply from the fixedly installed atomizer nozzle to the outlet openings of the air cap and thus the formation to influence the spray jet. And the retaining member assigned different locking positions, it is ensured that only by 'twisting, for example, 45 °, different forms of the spray jet are given.
- spray gun is used for spraying paints or paints and consists essentially of a gun housing 2 for receiving the drive, the mixing and / or the dosage causing components, a protruding from the gun body 2 handle 3 and a reservoir 4, in which the medium to be processed is stored.
- the atomization of the sucked from the reservoir 4 medium is carried out by compressed air, which is supplied via a line 7 of a spray nozzle 5 through the housing 2.
- the atomizer nozzle 5 is held by means of a screwed into a machined into the gun housing 2 thread 9 union nut 10.
- a handle 6 a engaging in the atomizing nozzle nozzle needle 16 16 can be actuated, also can be made by means of a screw 8, a color amount control.
- the spray gun 1 is provided with an air cap 11, by which it is possible, as in the Figures 12a, 12b and 12c is shown by twisting the air cap 11 to produce three different spray jets I, II and III, namely a horizontally oriented flat beam I, a circular beam II and a vertically oriented flat jet III.
- the atomizer nozzle 5 is installed in a position-oriented manner in the gun housing 2 and provided with openings 19 for the compressed air, and the air cap 11 has two diametrically opposed horns 12 and 13, in which air outlet openings 14 and 15 are incorporated.
- the compressed air flowing out of the outlet openings 14 and 15 acts on the color jet which is constantly ejected from the atomizer nozzle 5 in such a way that it is formed into the fuel jets I and III.
- FIG. 12b shown position of the atomizer 5 the supply of compressed air to the outlet openings 14 and 15 is prevented, this flows only from an annular channel 18, which is formed by the intervention of the atomizer 5 in a centrally arranged in the air cap 11 bore 17.
- the positive connection in the direction of rotation between the air cap 11 and the union nut 10 can be accomplished in different ways. According to the FIGS. 1 and 2 the air cap 11 is formed directly in the union nut 10, so that they are integrally formed and can be manufactured as an injection molded part.
- the air cap 11 is provided with a fixedly connected to this ring 21, are mounted on the radially projecting cam 22.
- the union nut 10 also has longitudinal grooves 23 into which the cams 22 engage. The air cap 11 is therefore taken with a rotation of the nut 10 of this and adjusted accordingly.
- a holding member 31 which is equivalent to the union nut 10 is effective, in turn, positively connected to an air cap 32 and in the spray jets I, II, III associated operating positions additionally lockable. This is accomplished in each case by means of a control cam 35, 35 ', 35 "or 35"', in the guide members 36, 36 ', 36 “or 36'” engage.
- radially projecting cam 33 For rotationally fixed connection of the air cap 32 with the holding member 31 are also used radially projecting cam 33, which engage in the union nut 31 incorporated longitudinal grooves 34.
- FIG. 6 In which way in the embodiments according to the FIGS. 4 and 5 effective cams 35 and 35 'are designed, is the FIG. 6 refer to.
- the unilaterally open cams 35 and 35 'are in this case equipped with three detent positions a, b and c, in which the bolts 37 can be engaged in the spray jaws I, II and III associated operating positions.
- the guide members 36 "and 36"' are each formed by radially resilient tabs equipped with bumps 38 and 38', which are created by in the holding member 31 and the housing 2 of the spray gun 1 incorporated U-shaped slots 40.
- the air cap 32 is provided with radially projecting cam 33, which engage in the region of the tabs 38 in the nut 31.
- the air cap 32 is fixed to the holding member 31 by being integrally formed connected.
- a corrugated spring washer 41 is inserted through which the air cap 32 against the gun housing. 2 or the atomizer nozzle 5 is pressed.
- a labyrinth seal 42 is provided between the atomizing nozzle 5 and the air cap 32, in that a circumferential web 44 projecting axially from the air cap 32 engages in a groove 43 incorporated in the atomizing nozzle 5.
- a radial outflow of compressed air is prevented in this way, also by the atomizer nozzle 5 is aligned coaxially.
- a plurality of openings 24 can be provided in the air cap 11 or 32, through which compressed air can flow out of the housing 2 into the atmosphere.
- the spray jets I, II and III can of course be adjusted in all the variants shown by turning the nut 11 and the holding member 31.
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- Nozzles (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Spritzpistole zum Versprühen von Farben und ähnlichen viskosen Medien, nach dem Oberbegriff des Patentanspruches 1.The invention relates to a spray gun for spraying paints and similar viscous media, according to the preamble of
Spritzpistolen dieser Art werden seit Jahren von der Firma J. Wagner GmbH, Markdorf, unter der Bezeichnung W 850 E angeboten und haben sich in der Praxis gut bewährt. Durch eine Drehung der Luftkappe innerhalb von 90° können hierbei, um unterschiedliche Arbeiten ausführen zu können, drei Strahlformen eingestellt werden, und zwar ein horizontal ausgerichteter Flachstrahl, ein Rundstrahl und ein vertikal ausgerichteter Flachstrahl.Spray guns of this type are offered for years by J. Wagner GmbH, Markdorf, under the name W 850 E and have proven themselves in practice well. By rotating the air cap within 90 ° three different shapes can be set to perform different tasks, namely a horizontally oriented flat jet, an omnidirectional jet and a vertically oriented flat jet.
Um eine dieser Strahlformen einzustellen, ist es bei dieser bekannten Spritzpistole erforderlich, die Überwurfmutter zu lösen und die Luftkappe bei gelöster Überwurfmutter von Hand entsprechen zu verdrehen. Danach ist die Überwurfmutter wiederum anzuziehen. Die Luftkappe ist dabei aber durch Festhalten zu arretieren, um ein ungewolltes Mitdrehen auszuschließen. Auch ist die Luftkappe nur durch Blickkontakt exakt auszurichten, um insbesondere bei der Einstellung zur Erzeugung eines Rundstrahles die Luftzufuhr zu den Austrittsöffnungen abzudecken. Abgesehen von dem erheblichen Zeitaufwand, der erforderlich ist, um diese Verstellungen und Einstellungen vorzunehmen, sind jeweils auch beide Hände des Bedieners der Spritzpistole im Einsatz. Da die mit Farbresten behaftete Luftkappe mit einer Hand angefast werden muß, sind bei einer Änderung der Strahlform verschmutzte Hände unumgänglich. Oftmals wird daher, um dies zu vermeiden, eine Strahlformänderung nicht vorgenommen.To set one of these beam shapes, it is necessary in this known spray gun to loosen the union nut and to turn the air cap with dissolved union nut by hand. Then tighten the union nut again. However, the air cap is to be locked by holding it to prevent unintentional co-rotation. Also, the air cap is to align exactly by eye contact only to cover the air supply to the outlet openings in particular when setting to produce an omnidirectional. Apart from the considerable amount of time that is required to make these adjustments and settings, both hands of the operator of the spray gun are in use. Since the paint cap afflicted with ink residues must be chamfered with one hand, soiled hands are inevitable if the beam shape is changed. Often, therefore, to avoid this, a beam shape change is not made.
Aus der
Als nachteilig hat sich herausgestellt, dass die Überwurfmutter lediglich in zwei unterschiedliche Positionen überführt werden, so dass die Ausformung des Spritzstrahles auch lediglich in zwei unterschiedliche Ausgestaltungen vorliegt, nämlich einerseits in einem horizontalen, flachen Spritzstrahl und andererseits in einem vertikalen, flachen Spritzstrahl. Zudem ist die Stellung der Überwurfmutter gegen die vorherrschenden Reibungskräfte schwierig und umständlich, denn die Reibungskräfte sind notwendig, um die Überwurfmutter in der eingestellten Position zu fixieren.A disadvantage has been found that the union nut are transferred only in two different positions, so that the shape of the spray jet is present only in two different configurations, namely on the one hand in a horizontal, flat spray jet and on the other hand in a vertical, flat spray jet. In addition, the position of the nut against the prevailing friction forces is difficult and cumbersome, because the friction forces are necessary to fix the nut in the set position.
Zudem sind die beiden Positionen der Überwurfmutter ausschließlich dadurch definiert, dass an diesen Endanschlägen vorgesehen sind.In addition, the two positions of the nut are defined exclusively by the fact that these end stops are provided.
Aufgabe der Erfindung ist es demnach, die Spritzpistole der vorgenannten Gattung in der Weise auszubilden, dass in kurzer Zeit eine Änderung der Form des Spritzstrahles vorgenommen werden kann, ohne dass dabei die Luftkappe anzufassen ist und ohne dass somit Verschmutzungen in Kauf zu nehmen sind. Eine Strahlformänderung soll vielmehr lediglich durch Betätigen der Überwurfmutter oder eines äquivalenten Haltegliedes bewerkstelligt werden. Der Bauaufwand, mittels dem dies ermöglicht wird, soll gering gehalten werden, dennoch soll eine stets zuverlässige Einstellung bei einfacher Handhabung kurzfristig vorzunehmen sein. Die lageorientierte Halterung der Überwurfmutter oder des Haltegliedes, nach dem der gewünschte Spritzstrahl vorliegt, soll dabei zuverlässig erzielbar sein.The object of the invention is therefore to form the spray gun of the aforementioned type in such a way that in a short time, a change in the shape of the spray jet can be made without causing the air cap is to be touched and without soiling are to be accepted. A beam shape change should rather be accomplished only by pressing the nut or an equivalent holding member. The construction cost, by means of which this is possible, should be kept low, yet should always be made to make a reliable setting with ease of use in the short term. The position-oriented mounting of the union nut or the holding member, after which the desired spray jet is present, should be reliably achievable.
Gemäß der Erfindung wird dies bei einer Spritzpistole der eingangs genannten Art durch die Merkmale des kennzeichnenden Teiles von Patentanspruch 1 gelöst.According to the invention, this is achieved by a spray gun of the type mentioned by the features of the characterizing part of
Die Luftkappe kann hierbei in die Überwurfmutter oder das Halteglied eingesetzt und mit diesen fest verbunden, beispielsweise verschweißt sein. Es ist aber auch mögliche, die Luftkappe und die Überwurfmutter bzw. das Halteglied aus einem Stück herzustellen und als Spritzgussteil auszubilden.The air cap can in this case be inserted into the union nut or the holding member and firmly connected with these, for example, be welded. But it is also possible to produce the air cap and the union nut or the holding member in one piece and form as an injection molded part.
Nach einer andersartigen Ausgestaltung kann aber auch die Luftkappe mittels einer oder mehreren radial, vorzugsweise von deren äußeren Mantelfläche abstehenden und gleichmäßig über den Umfang verteilt angeordneten Nocken, die in in die Überwurfmutter bzw. das Haltglied eingearbeitete Längsnuten eingreifen, formschlüssig mit diesen verbunden sein, wobei die Luftkappe auch in einen Ring eingesetzt und mit diesem fest verbunden sein kann, an dem die radial abstehenden in Längsnuten der Überwurfmutter bzw. des Haltegliedes eingreifende Nocken angeformt sind.According to another embodiment, but also the air cap by means of one or more radially, preferably projecting from the outer circumferential surface and uniformly distributed over the circumference arranged cams, which engage in incorporated into the nut or the retaining member longitudinal grooves, be positively connected thereto, wherein the air cap can also be inserted into a ring and firmly connected to this, on which the radially projecting engaging in longitudinal grooves of the union nut or the holding member cams are formed.
Nach einer bevorzugten Ausführungsform sollte das Halteglied in den auszuformenden Spritzstrahlen zugeordneten Winkelstellungen lageorientiert mit dem diese tragenden Bauteil, beispielsweise dem Pistolengehäuse, verrastbar sein.According to a preferred embodiment, the holding member in the auszuformenden spray jets associated angular positions should be positionally oriented with the supporting this component, such as the gun body, locked.
Die Führungsglieder können hierbei als Führungsstifte ausgebildet und die diese aufnehmenden Steuerkurven mit in Achsrichtung versetzten Ausnehmungen zur Aufnahme der Führungsstifte in den der Luftkappe zugeordneten Betriebsstellungen versehen sein, es ist aber auch möglich, die Führungsglieder als radial federnde Lappen zu gestalten und die diese aufnehmenden Steuerkurven mit in Umfangsrichtung, vorzugsweise gleichmäßig verteilt angeordneten Rastnocken zu versehen, zwischen denen die Lappen in den der Luftkappe zugeordneten Betriebsstellungen verrastbar sind.The guide members may in this case be formed as guide pins and the receiving these cams with offset in the axial direction recesses for receiving the guide pins in the air cap assigned operating positions, but it is also possible to make the guide members as radially resilient lobes and these receiving cams with in the circumferential direction, preferably uniformly distributed locking cams to be provided, between which the lobes are latched in the operating position associated with the air cap.
Bei von dem Halteglied baulich getrennter Luftkappe ist es des Weiteren angebracht, zwischen diesen eine Feder, vorzugsweise eine gewellte Federscheibe, anzuordnen, durch die die Luftkappe gegen die Düse, ein Zwischenstück oder ein Verlängerungsrohr pressbar ist, so dass stets eine gute Anlage der Luftkappe an der Zerstäuberdüse gewährleistet ist.When structurally separate from the support member air cap, it is also appropriate to arrange between them a spring, preferably a corrugated spring washer, through which the air cap against the nozzle, an intermediate piece or an extension tube is pressed, so always a good investment of the air cap the atomizer nozzle is guaranteed.
Auch sollte die Luftkappe auf der dem Gehäuse der Spritzpistole zugekehrten Stirnseite über eine Labyrinthdichtung an dem diese abstützenden Bauteil abgedichtet sein, um Luftverluste zu vermeiden, außerdem ist dadurch eine exakte koaxiale Ausrichtung der Zerstäuberdüse zur Luftkappe gewährleistet.Also, the air cap on the housing of the spray gun facing end should be sealed by a labyrinth seal on the supporting this component to prevent air leakage, also this ensures an exact coaxial alignment of the atomizer to the air cap.
Wird eine Spritzpistole gemäß der Erfindung ausgebildet, so ist es möglich, eine Spritzstrahleinstellung in kurzer Zeit und ohne Schwierigkeiten zu bewerkstelligen, ohne dass dabei Verschmutzungen in Kauf zu nehmen sind. Dadurch, dass die Luftkappe in Umfangsrichtung formschlüssig mit der Überwurfmutter bzw. dem Halteglied verbunden ist, ist dazu lediglich die Überwurfmutter bzw. das Halteglied entsprechend zu verdrehen, um die Luftzufuhr aus der ortsfest eingebauten Zerstäuberdüse zu den Austrittsöffnungen der Luftkappe zu steuern und somit die Ausbildung des Spritzstrahles zu beeinflussen. Und werden dem Halteglied unterschiedliche Raststellungen zugeordnet, ist sichergestellt, dass lediglich durch' Verdrehen, um beispielsweise 45°, andersartige Ausformungen des Spritzstrahles gegeben sind.If a spray gun is formed according to the invention, it is possible to accomplish an injection jet setting in a short time and without any difficulties, without causing contamination. Due to the fact that the air cap is connected in a form-fitting manner to the union nut or the holding member in the circumferential direction, only the union nut or holding member is to be rotated accordingly in order to control the air supply from the fixedly installed atomizer nozzle to the outlet openings of the air cap and thus the formation to influence the spray jet. And the retaining member assigned different locking positions, it is ensured that only by 'twisting, for example, 45 °, different forms of the spray jet are given.
Der Bauaufwand, mittels dem dies ermöglicht wird, ist äußerst gering, da nur eine formschlüssige Verbindung der Luftkappe mit der Überwurfmutter bzw. das Halteglied in Drehrichtung, die unterschiedlich gestaltet sein kann, vorzusehen ist. Auch ist die Verstellung sehr leicht und nur mit einer Hand auszuführen, Anpassungen des Spritzstrahts an die jeweils auszuführenden Arbeiten können demnach nahezu ohne Arbeitsunterbrechung erfolgen.The construction cost, by means of which this is possible, is extremely low, since only a positive connection of the air cap with the union nut or the holding member in the direction of rotation, which can be designed differently, is provided. Also, the adjustment is very easy and run only with one hand, adjustments of the spray to the respective work to be carried out can therefore be done almost without interruption.
In der Zeichnung sind einige Ausführungsbeispiele der gemäß der Erfindung ausgebildeten Spritzpistole dargestellt und nachfolgend im Einzelnen erläutert. Hierbei zeigen:
Figur 1- die Spritzpistole in perspektivischer Darstellung, mit abgeschraubter Luftkappe,
Figur 2- einen Teil des Gehäuses der Spritzpistole nach
mit abgeschraubter Luftkappe in einer vergrößerten Darstellung,Figur 1 Figuren 3 bis 5- Ausführungsvarianten der formschlüssigen Verbindung zwischen der Luftkappe und der Überwurfmutter in definierten Raststellungen in Explosionsdarstellungen,
- Figur 6
- die bei den Ausgestaltungen nach den
vorgesehenen Steuerkurven in Abwicklung,Figuren 3 bis 5 Figuren 7 bis 9- weitere Ausführungsvarianten der formschlüssigen Verbindung zwischen der Luftkappe und einem Halteglied, ebenfalls in definierten Raststellungen und Explosionsdarstellungen,
Figur 10- die bei den Ausgestaltungen nach den
vorgesehenen Steuerkurven,Figuren 7 bis 9 Figur 11- die in das Halteglied eingesetzte Luftkappe mit Dichtung, im Schnitt, und
- Figuren 12a, 12b und 12c
- die bei der Spritzpistole nach
und den jeweiligen Ausführungsvarianten erzeugbaren Spritzstrahlen.Figur 1
- FIG. 1
- the spray gun in perspective, with unscrewed air cap,
- FIG. 2
- a part of the housing of the spray gun after
FIG. 1 with unscrewed air cap in an enlarged view, - FIGS. 3 to 5
- Variants of the positive connection between the air cap and the nut in defined detent positions in exploded views,
- FIG. 6
- in the embodiments of the
FIGS. 3 to 5 provided cams in settlement, - FIGS. 7 to 9
- Further embodiments of the positive connection between the air cap and a holding member, also in defined detent positions and exploded views,
- FIG. 10
- in the embodiments of the
FIGS. 7 to 9 provided cams, - FIG. 11
- the air cap used in the holding member with seal, in section, and
- Figures 12a, 12b and 12c
- after the spray gun
FIG. 1 and the respective embodiments producible spray jets.
Die in
Die Spritzpistole 1 ist mit einer Luftkappe 11 ausgestattet, durch die es ermöglicht wird, wie dies in den
Um dies zu bewerkstelligen, ist die Zerstäuberdüse 5 lageorientiert in das Pistolengehäuse 2 eingebaut und mit Durchbrüchen 19 für die Druckluft versehen, und die Luftkappe 11 weist zwei diametral einander gegenüberliegend angeordnete Hörner 12 und 13 auf, in denen Luftaustrittsöffnungen 14 bzw. 15 eingearbeitet sind. Die aus den Austrittsöffnungen 14 und 15 ausströmende Druckluft wirkt im Betrieb der Spritzpistole 1 derart auf den ständig aus der Zerstäuberdüse 5 ausgestoßenen Farbstrahl ein, dass dieser in die Spritstrahlen I und III ausgeformt wird. In der in
Um auf einfache Weise und in kurzer Zeit eine Verstellung der Luftkappe 11 vornehmen zu können, ist diese in Umfangsrichtung formschlüssig mit der Überwurfmutter 10 verbunden, so dass lediglich die Überwurfmutter um 45° bzw. 90° zu verdrehen ist, um mit der Spritzpistole 1, ausgehend von der dem Spritzstrahl I zugeordneten Lage, den Spritzstrahl II bzw. den Spritzstrahl III erzeugen zu können. Die Luftkappe 11 ist dazu nicht anzufassen, Verschmutzungen sind somit nahezu ausgeschlossen. Nur die mittels eines Innengewindes 20 auf das Pistolengehäuse 2 aufgeschraubte Überwurfmutter 10 ist entsprechend um 45° bzw. um 90° in die den
Die in Drehrichtung formschlüssige Verbindung zwischen der Luftkappe 11 und der Überwurfmutter 10 kann auf unterschiedliche Weise bewerkstelligt werden. Gemäß den
Gemäß
Bei den Ausgestaltungen nach den
Bei der Ausgestaltung nach
In welcher Weise die bei den Ausführungsvarianten nach den
Nach den
Nach
Um stets eine gute Anlage der Luftkappe 32 an dem Pistolengehäuse 2 bzw. der Zerstäuberdüse 5 zu gewährleisten, ist bei den Ausgestaltungen nach den
Die Spritzstrahlen I, II und III können selbstverständlich bei allen gezeigten Ausführungsvarianten durch Verdrehen der Überwurfmutter 11 bzw. des Haltegliedes 31 eingestellt werden.The spray jets I, II and III can of course be adjusted in all the variants shown by turning the
Claims (10)
- A spray gun (1) for spraying paints and similar viscous media that can be propelled pneumatically or electrically, comprising a gun housing (2) for accommodating the propulsion mechanism, the components of the spray gun (1) that effect mixture and/or metering, a handle (3) projecting from the gun housing (2), a reservoir tank (4) removably attached to the gun housing (2) for holding the medium to be processed as well as a union nut (10) placed on the gun housing (2) or an intermediate piece connected to the gun housing (2) or an extension pipe and an air cap (11) surrounded by the union nut (10) that is provided with mutually offset outlet openings (14, 15) for compressed air by means of which the various spray jets (I, III) can be formed and with an atomiser nozzle (5) assigned to it that is held in an oriented position and can be opened by means of a nozzle needle (17), with the union nut (10) or a holding element (31) equivalent to it being positively connected with the air cap (11, 32) in the circumferential direction,
characterised in that,
the component carrying the holding element (31), for example the gun housing (2), that is used for setting and holding the air cap (32) in an oriented position, or the holding element (31) is provided with one or more, and preferably two, diametrically opposed control cams (35, 35', 35", 35"') that are open at one end and run in the circumferential direction and the holding element (31) or the component carrying the holding element (31) is provided with guide elements (36, 36', 36", 36"') protruding inwards or outwards that engage in the control cams (35, 35', 35", 35"'), and that adjusting the union nut (10) or the holding element (31) into a middle position located between the positions of the spray jet (I, III) closes the two outlet openings (14, 15). - The spray gun in accordance with Claim 1,
characterised in that
the air cap (11, 32) is inserted into the union nut (10) or the holding element (31) and is firmly connected to it, for example by welding. - The spray gun in accordance with Claim 1 or 2,
characterised in that
the air cap (11, 32) and the union nut (10) or holding element (31) are formed from one piece and configured as an injection-moulded component. - The spray gun in accordance with Claim 1,
characterised in that
the air cap (10) is positively connected to the union nut (10) or holding element (31) by one or more radial cams (22), preferably projecting from the outer jacket surface of the air cap (10) and distributed evenly around its circumference, with the cams (22) engaging in slots (23) worked into the union nut (10) or holding element (31). - The spray gun in accordance with Claim 4,
characterised in that
the air cap (11) is inserted into a ring (21) and firmly connected to the ring (21), with cams (22) projecting radially from the ring (21) engaging in slots (23) in the union nut (10) or the holding element (31). - The spray gun in accordance with Claim 1,
characterised in that
it is possible to lock the holding element (31) in the angular positions corresponding to the spray jets (I, II, III) to be formed in an oriented position in relation to the component carrying it, for example the gun housing (2). - The spray gun in accordance with Claim 1,
characterised in that,
the guide elements (36, 36') are configured as guide pins (37) and the control cams (35, 35') in which they engage are provided with axially offset recesses (a, b, c) for accommodating the guide pins (37) in the operating positions corresponding to the air cap (32). - The spray gun in accordance with Claim 1,
characterised in that,
the guide elements (36", 36"') are configured as radially sprung tabs (38) and the control cams (35", 35"') holding them are provided with detent cams (39) distributed in the circumferential direction, preferably with even spacing, between which the tabs (38) can be locked in the operating positions corresponding to the air cap (32). - The spray gun in accordance with one of the aforementioned claims,
characterised in that,
when the air cap (32) is structurally separate from the holding element (31), a spring (41) is arranged between them, preferably a corrugated spring washer, by means of which the air cap (32) can be pressed against the atomiser nozzle (5), an intermediate piece or an extension pipe. - The spray gun in accordance with one of the aforementioned claims,
characterised in that,
the air cap (32) on its end facing the housing (2) of the spray gun (1) is sealed against the component (2) supporting it by means of a labyrinth seal (42).
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06015298A EP1880771B1 (en) | 2006-07-22 | 2006-07-22 | Spray gun |
DE502006002824T DE502006002824D1 (en) | 2006-07-22 | 2006-07-22 | spray gun |
AT06015298T ATE422397T1 (en) | 2006-07-22 | 2006-07-22 | SPRAY GUN |
ES06015298T ES2320256T3 (en) | 2006-07-22 | 2006-07-22 | SPRAY GUN. |
US11/879,451 US7540434B2 (en) | 2006-07-22 | 2007-07-17 | Spray gun |
CN2007101526476A CN101125317B (en) | 2006-07-22 | 2007-07-20 | Spray gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06015298A EP1880771B1 (en) | 2006-07-22 | 2006-07-22 | Spray gun |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1880771A1 EP1880771A1 (en) | 2008-01-23 |
EP1880771B1 true EP1880771B1 (en) | 2009-02-11 |
Family
ID=37198793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06015298A Not-in-force EP1880771B1 (en) | 2006-07-22 | 2006-07-22 | Spray gun |
Country Status (6)
Country | Link |
---|---|
US (1) | US7540434B2 (en) |
EP (1) | EP1880771B1 (en) |
CN (1) | CN101125317B (en) |
AT (1) | ATE422397T1 (en) |
DE (1) | DE502006002824D1 (en) |
ES (1) | ES2320256T3 (en) |
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-
2006
- 2006-07-22 EP EP06015298A patent/EP1880771B1/en not_active Not-in-force
- 2006-07-22 ES ES06015298T patent/ES2320256T3/en active Active
- 2006-07-22 DE DE502006002824T patent/DE502006002824D1/en active Active
- 2006-07-22 AT AT06015298T patent/ATE422397T1/en not_active IP Right Cessation
-
2007
- 2007-07-17 US US11/879,451 patent/US7540434B2/en not_active Expired - Fee Related
- 2007-07-20 CN CN2007101526476A patent/CN101125317B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2320256T3 (en) | 2009-05-20 |
ATE422397T1 (en) | 2009-02-15 |
EP1880771A1 (en) | 2008-01-23 |
CN101125317A (en) | 2008-02-20 |
US20080029619A1 (en) | 2008-02-07 |
US7540434B2 (en) | 2009-06-02 |
CN101125317B (en) | 2013-05-29 |
DE502006002824D1 (en) | 2009-03-26 |
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