EP0796663B1 - Pulvérisateur rotatif pour le revêtement assisté par voie électrostatique d'objets par des peintures ou des lacques - Google Patents

Pulvérisateur rotatif pour le revêtement assisté par voie électrostatique d'objets par des peintures ou des lacques Download PDF

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Publication number
EP0796663B1
EP0796663B1 EP97104734A EP97104734A EP0796663B1 EP 0796663 B1 EP0796663 B1 EP 0796663B1 EP 97104734 A EP97104734 A EP 97104734A EP 97104734 A EP97104734 A EP 97104734A EP 0796663 B1 EP0796663 B1 EP 0796663B1
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EP
European Patent Office
Prior art keywords
spray head
drive shaft
rotary atomiser
contact
contact element
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
EP97104734A
Other languages
German (de)
English (en)
Other versions
EP0796663A2 (fr
EP0796663A3 (fr
Inventor
Michael Baumann
Harry Krumma
Frank Rupertus
Rolf Schneider
Kurt Vetter
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP0796663A2 publication Critical patent/EP0796663A2/fr
Publication of EP0796663A3 publication Critical patent/EP0796663A3/fr
Application granted granted Critical
Publication of EP0796663B1 publication Critical patent/EP0796663B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
    • 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
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • 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
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0426—Means for supplying shaping gas

Definitions

  • Rotary atomizer used, which is a high speed have rotating metallic spray head, the usual is designed bell-shaped, specifically to his Rotation axis rotationally symmetrical and in the direction of the object to be painted open; the paint to be atomized is fed to the interior of the spray head and then in shape finest droplets from the free edge designed as an edge thrown off the spray head. So that the paint particles on the object to be painted, the Paint particles are charged electrically and is between the Rotary atomizer and the object to be painted such an electric field generated that the charged paint particles are drawn to the object to be coated.
  • the paint particles thrown off the spray head are charged negatively if they are due to the Centrifugal forces, but also due to the high speed rotating spray head generated air flow through the ionized air area fly through - due to the bell-shaped design of the spray head has this air flow both a radial and an axial component.
  • a rotary atomizer is known from DE 41 05 116 A1, which distributed several evenly around the axis of rotation and high-voltage electrodes arranged radially outside the spray head to generate an electric field between their facing the objects to be coated Peaks and these items.
  • the spray head drive shaft to achieve procedural advantages designed as a hollow shaft, especially for the purpose of the lacquer to be processed or the one to be processed To supply paint centrally to the spray head, namely via a central longitudinal channel running in this hollow shaft; also has the further development of this high-speed rotary atomizer Recently, the inside diameter the hollow shaft forming the spray head drive shaft and of course always their outside diameter has grown to have other functions on the inside to be able to effect the hollow shaft, a fact which Makes air bearings even more indispensable because with increasing Outside diameter of the spray head drive shaft also circulation speed to be controlled in the bearings is greater becomes.
  • a rotary atomizer is known from US Pat. No. 4,811,906 known with the features of the preamble of claim 1.
  • the invention was based on the object with the help such a rotary atomizer produced paint or paint application to improve.
  • the spray head in a rotary atomizer according to the invention on a time-constant and defined electrical Potential is as well as a defined electric field between the high voltage electrodes and the edge of the spray head is formed in such a rotary atomizer for all paint droplets thrown off the spray head the same charging conditions, leading to an equalization the application of the paint or color leads the object to be coated.
  • the spray head connected to ground via the contact element or the contact elements are the paint particles thrown off the spray head initially charge-free and only experience a charge when flying through the ionized by the high voltage electrodes Air so that it is under the action of centrifugal forces and in the above described, by the high speed rotating spray head generated air flow at least almost unbraked in the area between the high voltage electrodes and the electrical object to be coated Field arrive, which also leads to an increase in efficiency the deposition of the paint particles on the surface to be coated Item leads.
  • the well-known, by the The present invention improved high-speed rotary atomizers operate with operating currents of approximately 200 ⁇ A or less; the inventors have now found that in the usual Air gap width of the air bearings of these known rotary atomizers with the latter an increase in the operating current to rollovers between the spray head drive shaft and the the latter surrounding and usually electrically conductive and grounded housing, but especially between the Air gap between the bearing surfaces of the Air bearings, and such arcing does not have only erosion on the elements mentioned, but which are released from the components by the arcing Particles also contaminate the components, so that after a relatively short operating time Blocking of the spray head drive shaft comes.
  • An inventive Rotary atomizers now allow much higher operating currents too, because the drive shaft to a defined electrical Potential and in particular can be grounded, so that erosion processes cannot occur, and it is obvious that an increase in operating current also to an increase in
  • Patent 4,369,924 discloses a rotary atomizer, in which a bell-shaped, metallic spray head from an air bearing metallic drive shaft is carried; the atomizer Paint is eccentrically fed to the spray head, the spray head drive shaft has no longitudinal channel and a high, negative electrical potential is applied to the drive shaft and thus applied to the spray head by against the flat, end face of the drive shaft facing away from the spray head Atomizer housing of stationary, circular cylindrical and with the drive shaft axis coaxial carbon contact which is connected to a high voltage generator is.
  • Carbon fibers as used according to the invention have not only proved to be extremely wear-resistant, also because of its high elasticity (it has shown that in the present application a contact element the less worn, the more elastic it is), but Fibrous or wire-shaped contact elements lead in the present Use case for another, particularly advantageous Effect: It has been shown that in the present application each surface contacting the spray head drive shaft Contact element for inadequate contacting of the drive shaft leads, presumably because of the high speed of the drive shaft on its surface an air boundary layer, which forms a flat contact element pushed away from the drive shaft by a fiber or wire-shaped contact element is penetrated, so that there is continuous, good contacting of the Drive shaft is coming.
  • Carbon fibers available on the market have a good one electrical conductivity and have proven to be extraordinary resistant to wear caused by friction, when the fiber ends contacting and moving Surface oriented approximately across the fiber longitudinal direction is.
  • carbon fiber brushes known for dissipating electrostatic charges are, e.g. B. in paper processing, film coating and conveyor systems; this is not just about a completely different application, but in these cases is the relative speed between the carbon fiber brush and the part to be unloaded by orders of magnitude smaller than with a rotary atomizer of the one in question here Art.
  • the contact element is parallel to the drive shaft axis, d. H. is axially oriented, and if the Contact device only has very few contact elements, the construction can be designed so that the contact element against an end face the spray head drive shaft is in contact with this end face also only about a transverse to the shaft axis Surface of a step of the shaft body can act.
  • the advantage of contacting an end face the drive shaft is connected, is that then Drive shaft in close proximity to the longitudinal channel of the spray head drive shaft can be contacted, d. H. in one Area in which the peripheral speed is significantly lower is as on the outer circumference of the drive shaft.
  • the contact element lies against an outer peripheral region the spray head drive shaft and is particular approximately radially oriented; such embodiments have the advantage that the contact device with a larger number of contact elements can be provided can, so that this with less pressure against the Spray head drive shaft can rest as in the case of a Contact device with only one contact element without reliable, continuous contacting of the drive shaft would be at risk, and naturally decreases with the contact pressure also contact wear.
  • the contact device has an axis of rotation comprehensive and to the latter concentric contact element carrier on which the contact elements are attached are.
  • Such a construction opens up the possibility of To design the contact device as an easily removable assembly, so that an exchange of a contact element or more Contact elements can be carried out easily and simply. Also can such a contact device outside the rotary atomizer completed, d. H. assembled, so that not multiple contact elements within the rotary atomizer must be attached individually.
  • a simple and therefore cheap Manufacture of the carrier and contact elements Assembly is achieved in that the carrier with mounting holes for attaching one contact element each is provided. Become the contact elements of carbon fiber bundles formed, one proceeds appropriately so that each carbon fiber bundle designed as a manageable unit is in the area of its facing away from the drive shaft End is contained in a metal sleeve that in a the mounting holes of the carrier is used, namely preferably with a press fit, so as to be an electrically good conductor Connection between the metallic support and the To ensure carbon fiber bundles.
  • a bell-shaped spray head 10 is shown in broken lines in FIG. 1 shown, which is at high speed around an axis of rotation 12 to be driven.
  • This spray head will the paint to be atomized is fed centrally, by means of a nozzle 13; the supplied paint then reaches the Inner wall of the rotating spray head 10, on which the paint thanks to the conical design of the spray head and its rotation migrates to an edge 14 of the spray head from which the paint is thrown off in the form of very fine droplets, and 1 obliquely outwards and to the left - because centrifugal forces and those generated by the rotating spray head Air flow, which is also according to FIG. 1 has left-hand flow component.
  • the state of the Technology e.g. U.S.
  • Patent 4,369,924 is the resultant air bearing a metallic, designed as a hollow shaft, with the metallic Spray head 10 firmly connected and to the axis of rotation 12 coaxial drive shaft 16 rotatably mounted; it is from a compressed air turbine, which together with the mentioned air bearings is housed in an assembly 18 and for the reasons mentioned need no further explanation.
  • the assembly 18 is also shown in Fig. 2; she owns a housing 20 shown partially in section in FIG. 2, to the back (according to Fig. 1 to the right) one too 1 indicated control valve 22 with a metallic Housing 24 connects.
  • the spray head drive shaft 16 forms thanks to its design an axial, central ink supply channel 26 as a hollow shaft, in the through a bore 28 of the control valve housing 24 of the paint to be atomized is introduced.
  • a rear (according to Fig. 2 right) end face of the drive shaft 16 was at 30 designated, a peripheral surface of the drive shaft with 32nd
  • an outer housing 100 of the rotary atomizer several, e.g. B. six, high-voltage electrodes 102 arranged, for each one an electrode holder 104 and one in the latter exchangeably attached insulating body 106 are provided.
  • the latter has on its left end according to FIG. 1 a recess 106a into which a tip 102a of the high voltage electrode 102 protrudes.
  • the electrode is in the insulator 106 attached centrally, its right end according to FIG. 1 is not in a way to be described with a not negative high voltage potential source shown, and, as can be seen in FIG. 1, the electrode tip protrudes 102a not beyond the level the outer edge of the depression 106a of the insulating body 106 is defined.
  • the electrode holders 104 are at equal angular intervals arranged around the axis of rotation 12 from one another, protrude finger-shaped together with their insulating bodies 106 obliquely outwards and to the left (according to FIG. 1) and are so formed and arranged that the electrode tips 102a in a plane perpendicular to the axis of rotation 12, which is located at an axial distance behind the spray head 10, d. H. 1 to the right of the spray head.
  • the one shown mainly in FIGS. 3 to 5 and particularly preferred embodiment is as Whole with 40 designated contact device from an im installed state concentric to the axis of rotation 12, metallic, annular carrier 42 and six, each as a whole with 44 designated contact elements.
  • metallic, annular carrier 42 and six each as a whole with 44 designated contact elements.
  • each contact element 44 consists of a carbon fiber bundle 48
  • the individual Carbon fibers through a metal sleeve 50 into a bundle are held together by the carbon fiber bundle 48 with Press fit engages in the metal sleeve 50.
  • This or the location hole 46 is in turn dimensioned so that the Metal sleeve 50 is arranged with a press fit in the receiving bore 46 is.
  • the contact elements 44 are preferably of the same size Angular distances from one another are arranged on the carrier 42.
  • the latter has in the area of its (when installed) rear end face 60, which in FIG. 3 is a front end face forms two approximately circular cutouts 62, which is the attachment of the bracket 42 to the rear, 2 right end face of the housing 20 by means of Fig. 2 serve screws, not shown, the heads of each partly come to rest in one of the recesses 62.
  • a third recess namely a contact recess 70 provided, the function of which will be explained later will be.
  • FIG. 5 now shows how the contact device 40 on the Back of the assembly 18 is attached and the scope of the Drive shaft 16 contacted.
  • FIG. 5 recognize two fastening screws 76, their screw heads 76a in each of the mounting recesses 62 of the carrier 42 intervene.
  • a contact spring 80 arranged which against the contact surface of the contact recess 70 of the Carrier 42 abuts.
  • this contact device 40 ' has one metallic carrier plate 42 ', which on the control valve housing 24 fastened with screws and with several, now axial aligned contact elements 44 'is provided against the rear end face 30 of the drive shaft 16 abut.
  • Each of the contact elements 44 ' is designed in the same way and be fixed in the carrier plate 42, as this was described above for the first embodiment.
  • the spray head 10 using the contact device according to the invention e.g. B. can be connected to ground potential, and since the object to be coated is preferably likewise is at ground potential, forms during operation of the invention Rotary atomizer not just a defined one electric field between the electrode tips 102a and object to be coated, but also a defined one and constant electric field between the Electrode tips 102a and the edge 14 of the spray head 10.
  • the electrode tips 102a cause the air is ionized in areas through which the spray head 10 or its edge 14 flung and initially electrically fly through neutral paint droplets while doing so be negatively charged electrically, so that they subsequently along the field lines of between the electrode tips 102a and the electrical object to be coated Field to be drawn to this subject.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)

Claims (10)

  1. Pulvérisateur rotatif pour revêtir de peintures ou de laques des objets avec assistance électrostatique, comportant une tête de pulvérisation (10), à peu près en forme de cloche, électriquement conductrice, pouvant être entraínée en rotation à vitesse de rotation élevée autour d'un axe de rotation (12), pour projeter par centrifugation des particules de peinture ou de laque depuis un bord libre, concentrique à l'axe de rotation (12), de la tête de pulvérisation (10), ainsi qu'un arbre d'entraínement (16) de la tête de pulvérisation qui est coaxial à l'axe de rotation (12), peut être entraíné au moyen d'une turbine à air comprimé, est électriquement conducteur, est relié avec conduction électrique, à la tête de pulvérisation, est porté, avec liberté de rotation, dans un corps (20, 24) au moyen de paliers pneumatiques et donc sans contact, et a la forme d'un arbre creux pour recevoir un canal (26) d'amenée de la peinture, dans lequel, pour mettre à un potentiel électrique défini, en particulier à la masse, la tête de pulvérisation (10) et donc également son arbre d'entraínement (16), est prévu un dispositif de mise en contact électrique (42, 44 ; 42' 44'), qui est fixe par rapport au corps (20, 24), et présente un élément de mise en contact (44 ; 44') qui d'une part est relié, avec conduction électrique, à une source de potentiel et qui d'autre part s'appuie en faisant contact, contre une zone de l'arbre d'entraínement (16) de la tête de pulvérisation dont la distance radiale à l'axe de rotation (12) est supérieure au demi-diamètre intérieur de l'arbre d'entraínement (16) de la tête de pulvérisation dans cette zone de l'arbre,
    caractérisé par le fait
    que le pulvérisateur rotatif comporte plusieurs électrodes sous haute tension (102), régulièrement réparties autour de l'axe de rotation (12) et radialement disposées à l'extérieur de la tête de pulvérisation (10), pour produire un champ électrique entre leurs pointes (102a), orientées vers les objets à revêtir, et ces objets ;
    que le dispositif de mise en contact (42, 44 ; 44, 44')présente un support (42 ; 42') de l'élément de mise en contact qui entoure l'axe de rotation (12) et lui est concentrique, qui est monté sur le corps (20, 24) avec possibilité d'échange et qui présente plusieurs perçages récepteurs (46) pour recevoir chacun avec possibilité d'échange, un élément de mise en contact (44 ; 44'),
    et que les éléments de mise en contact (44 ; 44')sont formés chacun d'un faisceau de fibres de carbone (48) ou d'un autre élément de mise en contact au moins équivalent à un faisceau de fibres de carbone en résistance élevée à l'usure, en élasticité et en aptitude à la mise en contact avec l'arbre d'entraínement (16) de la tête de pulvérisation.
  2. Pulvérisateur rotatif selon la revendication 1, caractérisé par le fait que l'élément de mise en contact (44') s'appuie contre une face frontale (30) de l'arbre d'entraínement (16) de la tête de pulvérisation.
  3. Pulvérisateur rotatif selon la revendication 1, caractérisé par le fait que l'élément de mise en contact (44) s'appuie contre une zone périphérique extérieure de l'arbre d'entraínement (16) de la tête de pulvérisation.
  4. Pulvérisateur rotatif selon la revendication 2 ou 3, caractérisé par le fait que l'élément de mise en contact (44 ; 44') est disposé près de l'extrémité de l'arbre d'entraínement (16) de la tête de pulvérisation (10) opposée à cette tête de pulvérisation.
  5. Pulvérisateur rotatif selon l'une des revendications 1 à 4, caractérisé par le fait que le support (42 ; 42') est un composant métallique.
  6. Pulvérisateur rotatif selon une ou plusieurs des revendications 1 à 5, caractérisé par le fait que le support (42 ; 42') a la forme d'un anneau circulaire.
  7. Pulvérisateur rotatif selon une ou plusieurs des revendications 1 à 6 , caractérisé par un ressort de mise en contact (80) s'appuyant contre le support (42).
  8. Pulvérisateur rotatif selon l'une des revendications 1 à 7, caractérisé par le fait que, dans la zone de son extrémité opposée à l'arbre d'entraínement (16), le faisceau de fibres de carbone (48) est saisi dans une douille métallique (50) et que cette dernière est insérée dans l'un des perçages récepteurs (46).
  9. Pulvérisateur rotatif selon la revendication 8, caractérisé par le fait que la douille métallique (50) est fixée dans le perçage récepteur (46) à ajustement serré.
  10. Pulvérisateur rotatif selon une ou plusieurs des revendications 1 à 9, caractérisé par le fait que les éléments de mise en contact (44) sont orientés selon la direction radiale par rapport à l'axe de rotation (12).
EP97104734A 1996-03-22 1997-03-20 Pulvérisateur rotatif pour le revêtement assisté par voie électrostatique d'objets par des peintures ou des lacques Expired - Lifetime EP0796663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611369A DE19611369A1 (de) 1996-03-22 1996-03-22 Rotationszerstäuber zum elektrostatisch unterstützten Beschichten von Gegenständen mit Farben bzw. Lacken
DE19611369 1996-03-22

Publications (3)

Publication Number Publication Date
EP0796663A2 EP0796663A2 (fr) 1997-09-24
EP0796663A3 EP0796663A3 (fr) 1998-12-23
EP0796663B1 true EP0796663B1 (fr) 2001-08-22

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EP97104734A Expired - Lifetime EP0796663B1 (fr) 1996-03-22 1997-03-20 Pulvérisateur rotatif pour le revêtement assisté par voie électrostatique d'objets par des peintures ou des lacques

Country Status (3)

Country Link
EP (1) EP0796663B1 (fr)
DE (2) DE19611369A1 (fr)
ES (1) ES2159788T3 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6896735B2 (en) 2002-01-24 2005-05-24 Behr Systems, Inc. Integrated charge ring
US6972052B2 (en) 2002-08-28 2005-12-06 Behr Systems, Inc. Rotational atomizer with external heating system
US6986366B2 (en) 2002-08-28 2006-01-17 Dürr Systems, Inc. Tube for the electrostatic coating of workpieces
US6991178B2 (en) 2003-01-24 2006-01-31 Dürr Systems, Inc. Concentric paint atomizer shaping air rings
US7051950B2 (en) 2001-03-29 2006-05-30 Dürr Systems, Inc. Atomizer for coating unit and method for its material supply
US7328123B2 (en) 2002-09-30 2008-02-05 Durr Systems, Inc. System for collision avoidance of rotary atomizer
US7347649B2 (en) 2002-07-11 2008-03-25 Durr Systems, Inc. Powder purge tube
US7432495B2 (en) 2002-09-02 2008-10-07 Durr Systems, Inc. Sensor arrangement for a coating system
US7520450B2 (en) 2006-10-10 2009-04-21 Illinois Tool Works Inc. Electrical connections for coating material dispensing equipment
EP2407247A1 (fr) 2002-07-22 2012-01-18 Dürr Systems GmbH Turbine de pulvérisateur rotatif
US8671495B2 (en) 2006-11-06 2014-03-18 Durr Systems, Inc. Scraper pig
CN103650303A (zh) * 2011-06-28 2014-03-19 伊利诺斯工具制品有限公司 电流控制电刷组件

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DE10233197A1 (de) * 2002-07-22 2004-02-05 Dürr Systems GmbH Potentialausgleichsanordnung für einen elektrostatischen Rotationszerstäuber
US7193836B2 (en) 2003-03-17 2007-03-20 Illinois Tool Works Inc Grounding brush for mitigating electrical current on motor shafts
US7136271B2 (en) 2003-03-17 2006-11-14 Illinois Tool Works Inc Static charge neutralizing assembly for use on rollers and shafts
US8199453B2 (en) 2003-03-17 2012-06-12 Illinois Tool Works Inc. Shaft current control brush ring assembly
US7339777B2 (en) 2006-01-12 2008-03-04 Illinois Tool Works Inc Grounding system for a rotating shaft
DE102010027391A1 (de) 2010-07-16 2011-08-25 Eisenmann Ag, 71032 Rotationszerstäuber zum elektrostatisch unterstützten Aufbringen von Lackpartikeln
US8963398B2 (en) 2011-10-28 2015-02-24 Illinois Tool Works Inc. Current control brush assembly
DE102011121915A1 (de) 2011-12-22 2013-06-27 Eisenmann Ag Elektrodenanordnung und elektrostatischer Zerstäuber mit einer solchen
DE102012021218A1 (de) 2012-10-27 2014-04-30 Volkswagen Aktiengesellschaft Lackiervorrichtung und Verfahren zum Betrieb einer Lackiervorrichtung
DE102023131983A1 (de) 2023-11-16 2025-05-22 Dürr Systems Ag Ableiteinrichtung und Rotationszerstäuber mit einer solchen Ableiteinrichtung

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EP0120648A3 (fr) * 1983-03-24 1985-10-16 Nordson Corporation Appareil et procédé pour charger par induction un matériau de revêtement conducteur atomisé par la force centrifuge
FR2584314B1 (fr) * 1985-07-05 1988-04-29 Sames Sa Tete atomisante rotative, notamment pour peinture electrostatique
DE3616684A1 (de) * 1986-05-16 1987-11-19 Behr Industrieanlagen Zerstaeuber zum elektrostatischen beschichten von gegenstaenden
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7051950B2 (en) 2001-03-29 2006-05-30 Dürr Systems, Inc. Atomizer for coating unit and method for its material supply
US6896735B2 (en) 2002-01-24 2005-05-24 Behr Systems, Inc. Integrated charge ring
US7347649B2 (en) 2002-07-11 2008-03-25 Durr Systems, Inc. Powder purge tube
EP2407247A1 (fr) 2002-07-22 2012-01-18 Dürr Systems GmbH Turbine de pulvérisateur rotatif
US6986366B2 (en) 2002-08-28 2006-01-17 Dürr Systems, Inc. Tube for the electrostatic coating of workpieces
US6972052B2 (en) 2002-08-28 2005-12-06 Behr Systems, Inc. Rotational atomizer with external heating system
US7432495B2 (en) 2002-09-02 2008-10-07 Durr Systems, Inc. Sensor arrangement for a coating system
US7328123B2 (en) 2002-09-30 2008-02-05 Durr Systems, Inc. System for collision avoidance of rotary atomizer
US6991178B2 (en) 2003-01-24 2006-01-31 Dürr Systems, Inc. Concentric paint atomizer shaping air rings
US7520450B2 (en) 2006-10-10 2009-04-21 Illinois Tool Works Inc. Electrical connections for coating material dispensing equipment
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Publication number Publication date
EP0796663A2 (fr) 1997-09-24
DE59704343D1 (de) 2001-09-27
ES2159788T3 (es) 2001-10-16
DE19611369A1 (de) 1997-09-25
EP0796663A3 (fr) 1998-12-23

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