EP0443113B1 - Nozzle attachment for a powder spray gun - Google Patents

Nozzle attachment for a powder spray gun Download PDF

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Publication number
EP0443113B1
EP0443113B1 EP19900122668 EP90122668A EP0443113B1 EP 0443113 B1 EP0443113 B1 EP 0443113B1 EP 19900122668 EP19900122668 EP 19900122668 EP 90122668 A EP90122668 A EP 90122668A EP 0443113 B1 EP0443113 B1 EP 0443113B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
nozzle
nozzle attachment
slot
spray 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.)
Expired - Lifetime
Application number
EP19900122668
Other languages
German (de)
French (fr)
Other versions
EP0443113A2 (en
EP0443113A3 (en
Inventor
Radovan Dipl.-Ing. Talacko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wagner International AG
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Wagner International AG
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Filing date
Publication date
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Publication of EP0443113A2 publication Critical patent/EP0443113A2/en
Publication of EP0443113A3 publication Critical patent/EP0443113A3/en
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Publication of EP0443113B1 publication Critical patent/EP0443113B1/en
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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
    • B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials

Definitions

  • the nozzle slot is thus extended on both sides beyond the conical end face of the nozzle attachment, in such a way that the two end regions of the nozzle slot are located diametrically to one another in the cylinder jacket surfaces, with these end regions then being covered to a greater or lesser extent by a simple sliding sleeve with which As a result of an extension or shortening of the nozzle slot and thus a widening or narrowing of the powder flat jet.
  • the sliding sleeve can be moved so far forward that it protrudes in its foremost end position on the end face of the cylinder body.
  • the nozzle attachment consists of a cylinder body 10, the rear part 10a facing the spray gun has a larger diameter than its front part 10b.
  • the front cylinder part 10b is covered by a conical end face 11.
  • a nozzle slot 12 is cut into the end face 11 as a powder outlet, the two end regions 12a of which are cut into the jacket of the front cylinder part 10b.
  • the slot 12 not only extends over the end face 11 but is also extended beyond this on both sides into the front cylinder part 10b (FIG. 2).
  • On the front cylinder part 10b sits with friction a sliding sleeve 13.
  • 14 denotes an electric charging electrode in the form of a central metal needle.
  • a powder-air mixture is supplied to the nozzle attachment in a conventional manner, which is charged by the electrode 14 which is connected to high voltage and sprayed through the nozzle slot 12. If, as shown in FIG. 2, the sliding sleeve 13 is in its rear end position, the shoulder to the cylinder part 10a being a stop, the slot 12 is open over its entire length, i.e. the two end regions 12a are also free. A very wide width powder jet is thus achieved.
  • the sliding sleeve 13 If the sliding sleeve 13 is now pushed forward, then it begins to cover the outer slot areas 12a more and more until finally the two outer areas 12a are completely covered, as shown in FIG. 3. However, this means that the slot 12 is only open in its central region, that is to say in the region of the end face 11, with which a very narrow flat jet is achieved. After the sliding sleeve 13 can be moved continuously between the positions of FIGS. 2 and 3, the width of the flat jet can thus be changed continuously between the two limit values shown.
  • the sleeve 13 acts as a shaping element, that is, it grips the flat jet emerging from the central area of the nozzle slot into a substantially uniform round jet together.
  • the sliding sleeve 13 it is not only possible to change a wide flat jet continuously into a narrow flat jet, but also to convert the flat spray jet into an omnidirectional jet. But this takes into account all spray patterns usually required.
  • the diameter of the rear cylinder part 10a can be slightly larger than that of the pistol tube of the spray gun, so that the attachment can simply be attached. If the diameter of the cylinder part 10a is equal to the diameter of the gun tube, the connection can be made, for example, by means of a union nut.
  • the diameter of the front cylinder part 10b is advantageously smaller than that of the rear cylinder part 10a; namely, the diameter of the front cylinder part 10b is decisive for the minimum width of the flat jet that can be generated, as is easy to understand. The smaller the diameter of the front cylinder part 10b and the longer the outer slot areas 12a are, the greater the range of change of the flat jet width.
  • the nozzle attachment can also be an integral unit with the gun barrel of the spray gun, in which case the nozzle attachment is the foremost region of the gun barrel.
  • the electrode arrangement for the construction of the electrostatic field can have different configurations. Instead of the inner electrode shown in FIG. 1, it is also possible to work with outer electrodes, for example electrode needles, which protrude from the sliding sleeve 13. In this case, the wider the flat jet, the further back the electrode needles, which reduces the risk of electrode contamination.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)

Description

Die Erfindung betrifft einen Düsenvorsatz einer Pulversprühpistole, insbesondere einer elektrostatischen Pulversprühpistole, gemäß dem Oberbegriff des Patentanspruchs 1. Bei einem bekannten Düsenvorsatz dieser Art (FR-A-2605533) erstreckt sich der Düsenschlitz lediglich über einen Teil der Stirnfläche. Der Düsenschlitz ist nicht variabel.The invention relates to a nozzle attachment of a powder spray gun, in particular an electrostatic powder spray gun, according to the preamble of claim 1. In a known nozzle attachment of this type (FR-A-2605533), the nozzle slot extends only over part of the end face. The nozzle slot is not variable.

Die Breite des erzeugten Pulver-Flachstrahls hängt von mehreren Faktoren ab, vor allem aber von der Länge des Düsenschlitzes. Will man die Breite des Pulver-Flachstrahls ändern, ist es also erforderlich, den Düsenvorsatz durch einen anderen Düsenvorsatz geringerer oder größerer Schlitzlänge auszutauschen. Es sind zwar schon mehrfach Versuche unternommen worden, Düsenvorsätze mit längenverstellbarem Düsenschlitz zu schaffen, jedoch führten diese Versuche zu konstruktiv aufwendigen und wenig befriedigenden Lösungen.The width of the powder flat jet generated depends on several factors, but above all on the length of the nozzle slot. If you want to change the width of the powder flat jet, it is necessary to replace the nozzle attachment with another nozzle attachment with a shorter or larger slot length. Attempts have been made several times to create nozzle attachments with a length-adjustable nozzle slot, but these attempts have led to structurally complex and unsatisfactory solutions.

Aufgabe der vorliegenden Erfindung ist es deshalb, einen Düsenvorsatz der eingangs erwähnten Art so zu verbessern, daß die Länge seines Düsenschlitzes in weiten Grenzen veränderbar ist, der Düsenvorsatz trotzdem aber konstruktiv einfach bleibt und leicht zu handhaben ist.The object of the present invention is therefore to improve a nozzle attachment of the type mentioned at the outset so that the length of its nozzle slot can be varied within wide limits, but the nozzle attachment nevertheless remains structurally simple and is easy to handle.

Die Lösung dieser Aufgabe ergibt sich aus den kennzeichnenden Merkmalen des Patentanspruchs 1.The solution to this problem results from the characterizing features of patent claim 1.

Gemäß der Erfindung wird also der Düsenschlitz beidseits über die konische Stirnfläche des Düsenvorsatzes hinaus verlängert, derart, daß sich die beiden Endbereiche des Düsenschlitzes diametral zueinander in den Zylindermantelflächen befinden, wobei dann durch eine einfache Schiebehülse diese Endbereiche mehr oder weniger abgedeckt werden können, mit der Folge einer Verlängerung bzw. Verkürzung des Düsenschlitzes und damit einer Verbreiterung bzw. Verengung des Pulverflachstrahls.According to the invention, the nozzle slot is thus extended on both sides beyond the conical end face of the nozzle attachment, in such a way that the two end regions of the nozzle slot are located diametrically to one another in the cylinder jacket surfaces, with these end regions then being covered to a greater or lesser extent by a simple sliding sleeve with which As a result of an extension or shortening of the nozzle slot and thus a widening or narrowing of the powder flat jet.

Bei einer für Feuerlöschzwecke vorgesehenen Sprühpistole (US-A-2559592) ist zwar bereits bekannt, den Düsenschlitz bis in die Zylindermantelfläche Zu verlängern und mittels einer verschiebbaren Hülse variabel zu gestalten. Eine Übertragung der Lehre dieser Druckschrift auf das technisch völlig andersartige Gebiet der Pulversprühpistolen ist jedoch nicht naheliegend.In a spray gun intended for fire extinguishing purposes (US-A-2559592) it is already known to extend the nozzle slot into the cylinder surface and to make it variable by means of a displaceable sleeve. A transfer of the teaching of this document to the technically completely different field of powder spray guns is, however, not obvious.

Nach dem Patentanspruch 2 kann die Schiebehülse so weit nach vorne verschoben werden, daß sie in ihrer vordersten Endstellung über die Stirnfläche des Zylinderkörpers hinausragt. Mit dieser Ausgestaltung wird der äußerst vorteilhafte Effekt erreicht, daß der Pulverstrahl sogar zu einem Rundstrahl geformt werden kann.According to claim 2, the sliding sleeve can be moved so far forward that it protrudes in its foremost end position on the end face of the cylinder body. With this configuration, the extremely advantageous effect is achieved that the powder jet can even be shaped into a round jet.

Auf der Zeichnung ist eine Ausführungsform der Erfindung beispielsweise dargestellt. Es zeigen:

Fig. 1
den Düsenvorsatz im Längsschnitt, und
Fig. 2, 3 und 4
perspektivische Skizzen des Düsenvorsatzes mit verschiedenen Schiebestellungen der Schiebehülse.
In the drawing, an embodiment of the invention is shown for example. Show it:
Fig. 1
the nozzle attachment in longitudinal section, and
2, 3 and 4
perspective sketches of the nozzle attachment with different sliding positions of the sliding sleeve.

Gemäß Fig. 1 besteht der Düsenvorsatz aus einem Zylinderkörper 10, dessen hinterer, der Sprühpistole zugewandte Teil 10a einen größeren Durchmesser hat als sein vorderer Teil 10b. Der vordere Zylinderteil 10b ist durch eine konische Stirnfläche 11 abgedeckt. In die Stirnfläche 11 ist ein Düsenschlitz 12 als Pulveraustritt eingeschnitten, dessen beide Endbereiche 12a in den Mantel des vorderen Zylinderteils 10b eingeschnitten sind. Mit anderen Worten, der Schlitz 12 reicht nicht nur über die Stirnfläche 11 sondern ist über diese beidseitig hinaus bis in den vorderen Zylinderteil 10b verlängert (Fig. 2). Auf dem vorderen Zylinderteil 10b sitzt mit Reibungsschluß eine Schiebehülse 13. Mit 14 schließlich ist eine elektrische Ladeelektrode in Form einer zentralen Metallnadel bezeichnet.1, the nozzle attachment consists of a cylinder body 10, the rear part 10a facing the spray gun has a larger diameter than its front part 10b. The front cylinder part 10b is covered by a conical end face 11. A nozzle slot 12 is cut into the end face 11 as a powder outlet, the two end regions 12a of which are cut into the jacket of the front cylinder part 10b. In other words, the slot 12 not only extends over the end face 11 but is also extended beyond this on both sides into the front cylinder part 10b (FIG. 2). On the front cylinder part 10b sits with friction a sliding sleeve 13. Finally, 14 denotes an electric charging electrode in the form of a central metal needle.

Dem Düsenvorsatz wird in üblicher Weise ein Pulver-Luft-Gemisch zugeführt, das von der an Hochspannung liegenden Elektrode 14 aufgeladen und durch den Düsenschlitz 12 abgesprüht wird. Befindet sich nun, wie in Fig. 2 dargestellt, die Schiebehülse 13 in ihrer hinteren Endposition, wobei die Schulter zum Zylinderteil 10a einen Anschlag darstellt, dann ist der Schlitz 12 über seine gesamte Länge offen, d.h., auch die beiden Endbereiche 12a sind frei. Damit wird ein Pulver-Flachstrahl sehr großer Breite erzielt.A powder-air mixture is supplied to the nozzle attachment in a conventional manner, which is charged by the electrode 14 which is connected to high voltage and sprayed through the nozzle slot 12. If, as shown in FIG. 2, the sliding sleeve 13 is in its rear end position, the shoulder to the cylinder part 10a being a stop, the slot 12 is open over its entire length, i.e. the two end regions 12a are also free. A very wide width powder jet is thus achieved.

Wird nun die Schiebehülse 13 nach vorne geschoben, dann beginnt sie mehr und mehr die Schlitzaußenbereiche 12a zu überdecken, bis schließlich die beiden Außenbereiche 12a völlig überdeckt sind, wie dies in Fig. 3 gezeigt ist. Damit aber ist der Schlitz 12 nur noch in seinem Mittelbereich, also im Bereich der Stirnfläche 11 offen, womit ein sehr schmaler Flachstrahl erreicht wird. Nachdem die Schiebehülse 13 zwischen den Positionen der Fig. 2 und 3 stufenlos verschiebbar ist, kann somit die Breite des Flachstrahls stufenlos zwischen den beiden gezeichneten Grenzwerten verändert werden. Wird nun die Schiebehülse 13 noch weiter nach vorne geschoben, so daß ihr vorderer Ringbereich über die Stirnfläche 11 nach vorne übersteht, dann wirkt die Hülse 13 als formgebendes Element, d.h., faßt den aus dem Mittelbereich des Düsenschlitzes austretenden Flachstrahl zu einem im wesentlichen gleichmäßigen Rundstrahl zusammen. Mittels der Schiebehülse 13 ist es also nicht nur möglich, einen breiten Flachstrahl stufenlos in einen schmalen Flachstrahl zu verändern sondern darüberhinaus sogar den flachen Sprühstrahl in einen Rundstrahl umzuwandeln. Damit aber werden allen üblicherweise gewünschten Sprühbildern Rechnung getragen.If the sliding sleeve 13 is now pushed forward, then it begins to cover the outer slot areas 12a more and more until finally the two outer areas 12a are completely covered, as shown in FIG. 3. However, this means that the slot 12 is only open in its central region, that is to say in the region of the end face 11, with which a very narrow flat jet is achieved. After the sliding sleeve 13 can be moved continuously between the positions of FIGS. 2 and 3, the width of the flat jet can thus be changed continuously between the two limit values shown. If the sliding sleeve 13 is pushed even further forward so that its front ring area protrudes forward over the end face 11, then the sleeve 13 acts as a shaping element, that is, it grips the flat jet emerging from the central area of the nozzle slot into a substantially uniform round jet together. By means of the sliding sleeve 13, it is not only possible to change a wide flat jet continuously into a narrow flat jet, but also to convert the flat spray jet into an omnidirectional jet. But this takes into account all spray patterns usually required.

Der Durchmesser des hinteren Zylinderteils 10a kann etwas größer sein als derjenige des Pistolenrohrs der Sprühpistole, so daß der Vorsatz einfach aufgesteckt werden kann. Bei einem Durchmesser des Zylinderteils 10a gleich dem Durchmesser des Pistolenrohrs kann die Verbindung beispielsweise durch eine Überwurf-Schraubmutter erfolgen. Der Durchmesser des vorderen Zylinderteils 10b ist zweckmäßigerweise kleiner als derjenige des hinteren Zylinderteils 10a; der Durchmesser des vorderen Zylinderteils 10b ist nämlich für die Minimalbreite des erzeugbaren Flachstrahls maßgebend, wie leicht verständlich ist. Je geringer der Durchmesser des vorderen Zylinderteils 10b bemessen ist und je länger die äußeren Schlitzbereiche 12a bemessen sind, um so größer ist der Veränderungsbereich der Flachstrahlbreite. Je weiter die Schiebehülse 13 nach vorne über die Stirnfläche 11 hinaus verschoben werden kann, um so "runder" wird der Rundstrahl. Die Hülse 13 kann, wie erwähnt, mittels Reibungsschluß auf dem vorderen Zylinderteil 10b sitzen, sie kann jedoch auch mit einem Innengewinde versehen sein, das in ein auf dem vorderen Zylinderteil 10b befindliches Außengewinde eingreift. Ferner können Anschläge angebracht werden, welche die Hülse 13 in ihren beiden Endstellungen begrenzen. Vorzugsweise besteht die Hülse 13 aus Isolierstoff, um das zwischen Elektrode 14 und - nicht gezeichnetem - Werkstück aufgebaute elektrische Feld nicht zu stören.The diameter of the rear cylinder part 10a can be slightly larger than that of the pistol tube of the spray gun, so that the attachment can simply be attached. If the diameter of the cylinder part 10a is equal to the diameter of the gun tube, the connection can be made, for example, by means of a union nut. The diameter of the front cylinder part 10b is advantageously smaller than that of the rear cylinder part 10a; namely, the diameter of the front cylinder part 10b is decisive for the minimum width of the flat jet that can be generated, as is easy to understand. The smaller the diameter of the front cylinder part 10b and the longer the outer slot areas 12a are, the greater the range of change of the flat jet width. The further the sliding sleeve 13 can be moved forward beyond the end face 11, the "rounder" the omnidirectional jet becomes. As mentioned, the sleeve 13 can sit on the front cylinder part 10b by means of a frictional connection, but it can also be provided with an internal thread which engages in an external thread located on the front cylinder part 10b. Furthermore, stops can be attached which limit the sleeve 13 in its two end positions. The sleeve 13 is preferably made of insulating material so as not to disturb the electrical field built up between the electrode 14 and the workpiece (not shown).

Der Düsenvorsatz kann auch mit dem Pistolenrohr der Sprühpistole eine integrale Einheit darstellen, in welchem Fall dann der Düsenvorsatz der vorderste Bereich des Pistolenrohrs ist. Die Elektrodenanordnung für den Aufbau des elektrostatischen Feldes kann verschiedene Ausgestaltungen haben. Anstelle der in Fig. 1 gezeigten Innenelektrode kann auch mit Außenelektroden gearbeitet werden, etwa Elektrodennadeln, die von der Schiebehülse 13 abstehen. In diesem Fall befinden sich dann die Elektrodennadeln um so weiter nach hinten, je breiter der Flachstrahl ist, was die Gefahr einer Elektrodenverschmutzung verringert.The nozzle attachment can also be an integral unit with the gun barrel of the spray gun, in which case the nozzle attachment is the foremost region of the gun barrel. The electrode arrangement for the construction of the electrostatic field can have different configurations. Instead of the inner electrode shown in FIG. 1, it is also possible to work with outer electrodes, for example electrode needles, which protrude from the sliding sleeve 13. In this case, the wider the flat jet, the further back the electrode needles, which reduces the risk of electrode contamination.

Claims (6)

  1. Nozzle attachment of a powder-spray gun, in particular an electrostatic powder-spray gun, comprising a cylinder body (10) placed co-axially onto the gun barrel, in the conically-constructed front face (11) of which a nozzle slot (12) is cut as a powder outlet, characterised in that the nozzle slot (12) extends on both sides over the conical cylinder front face (11) into the cylinder casing surface and in that on the cylinder body (10) a sleeve (13) is displaceably located which in its extreme rear slide position leaves the entire nozzle slot (12) open, including the slot regions (12a) in the cylinder casing, and in its extreme front position completely covers the slot regions (12a) in the cylinder casing.
  2. Nozzle attachment according to claim 1, characterised in that in its extreme front slide position the displaceable sleeve (13) protrudes frontwards over the cylinder front face (11).
  3. Nozzle attachment according to claim 1 or 2, characterised in that the displaceable sleeve (13) is a sliding sleeve located in friction-fit manner on the cylinder body (10).
  4. Nozzle attachment according to one of claims 1 to 3, characterised in that the cylinder body (10) comprises a rear cylinder portion (10a) and a front cylinder portion (10b), the front cylinder portion (10b) carrying the displaceable sleeve (13) and having a smaller diameter than the rear cylinder portion (10a).
  5. Nozzle attachment according to one of claims 1 to 4, characterised by high voltage electrodes standing away from the displaceable sleeve (13).
  6. Nozzle attachment according to one of claims 1 to 5, characterised in that the cylinder body is integral with the gun barrel of the powder-spray gun.
EP19900122668 1990-02-20 1990-11-27 Nozzle attachment for a powder spray gun Expired - Lifetime EP0443113B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904005350 DE4005350A1 (en) 1990-02-20 1990-02-20 Spray jet insert for electrostatic spray coating gun - is fitted with sliding sleeve used to adjust spray width
DE4005350 1990-02-20

Publications (3)

Publication Number Publication Date
EP0443113A2 EP0443113A2 (en) 1991-08-28
EP0443113A3 EP0443113A3 (en) 1992-03-25
EP0443113B1 true EP0443113B1 (en) 1995-02-22

Family

ID=6400595

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Application Number Title Priority Date Filing Date
EP19900122668 Expired - Lifetime EP0443113B1 (en) 1990-02-20 1990-11-27 Nozzle attachment for a powder spray gun

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DE (1) DE4005350A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1470866A2 (en) 2003-04-22 2004-10-27 J. Wagner AG Nozzle for a powder spray gun

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141663C2 (en) * 1991-12-17 1996-09-19 Wagner Int Electrostatic powder coating gun
DE19621072A1 (en) * 1996-05-24 1997-11-27 Gema Volstatic Ag Electrostatic spray device
AUPO692897A0 (en) * 1997-05-21 1997-06-12 Tancheff, Brian Dispensing means
US6207099B1 (en) 1999-10-20 2001-03-27 Kimberly-Clark Worldwide, Inc. Process for uniform cross-direction distribution of particulate material
US6267575B1 (en) * 1998-12-11 2001-07-31 Kimberly Clark Worldwide, Inc. Apparatus for the uniform deposition of particulate material in a substrate
DE10053292C1 (en) * 2000-10-27 2002-05-23 Eisenmann Lacktechnik Kg High-speed rotary atomizer for applying powder coating
CN109647644B (en) * 2019-01-17 2024-04-02 常德天工机械有限公司 Spray gun for spraying paint inside air cylinder and paint spraying method
CN110639718A (en) * 2019-10-11 2020-01-03 江苏大学 Pneumatic auxiliary electrostatic spray head

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US2559592A (en) * 1947-02-21 1951-07-10 Leslie M Button Vapor or fog nozzle
US2944743A (en) * 1958-08-26 1960-07-12 Otto Bernz Company Inc Adjustable nozzles
DE2022088C3 (en) * 1970-05-06 1981-04-23 Graco Inc., Minneapolis, Minn. Spray gun for applying protective layers made of plastic powder
DE3608415A1 (en) * 1986-03-13 1987-09-24 Gema Ransburg Ag ELECTROSTATIC SPRAYING DEVICE FOR COATING POWDER
FR2605533A1 (en) * 1986-10-28 1988-04-29 Sames Sa Device for spraying an airborne powdery substance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1470866A2 (en) 2003-04-22 2004-10-27 J. Wagner AG Nozzle for a powder spray gun

Also Published As

Publication number Publication date
EP0443113A2 (en) 1991-08-28
DE4005350A1 (en) 1991-08-22
EP0443113A3 (en) 1992-03-25
DE4005350C2 (en) 1993-03-18

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