WO2000030763A2 - Installation de revetement par poudre - Google Patents

Installation de revetement par poudre Download PDF

Info

Publication number
WO2000030763A2
WO2000030763A2 PCT/EP1999/009094 EP9909094W WO0030763A2 WO 2000030763 A2 WO2000030763 A2 WO 2000030763A2 EP 9909094 W EP9909094 W EP 9909094W WO 0030763 A2 WO0030763 A2 WO 0030763A2
Authority
WO
WIPO (PCT)
Prior art keywords
powder
coating system
unit
powder coating
application device
Prior art date
Application number
PCT/EP1999/009094
Other languages
German (de)
English (en)
Other versions
WO2000030763A3 (fr
Inventor
Hans Mendler
Original Assignee
J. Wagner Gmbh
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 J. Wagner Gmbh filed Critical J. Wagner Gmbh
Publication of WO2000030763A2 publication Critical patent/WO2000030763A2/fr
Publication of WO2000030763A3 publication Critical patent/WO2000030763A3/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0447Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0447Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • B05B13/0452Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0463Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length
    • B05B13/0468Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with reciprocating or oscillating spray heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0463Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length
    • B05B13/0468Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with reciprocating or oscillating spray heads
    • B05B13/0473Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404Arrangements for supplying particulate material
    • B05B7/1413Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device
    • B05B7/1418Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device comprising means for supplying an additional liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404Arrangements for supplying particulate material
    • B05B7/1472Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder

Definitions

  • the invention relates to a powder coating system with at least one application device with dispensing nozzle.
  • the coating powder is fed from a powder container by means of a powder feeder.
  • workpieces with large surfaces to be coated can also be conveyed horizontally or hanging through the cabin, in which case the application devices spray onto the surfaces to be coated from above or below.
  • the invention has for its object to provide a powder coating system for coatings of the highest quality, in which the disadvantages mentioned, namely damage and caking of the powder particles during the conveyance between the powder container and dispensing nozzles of the application device are avoided.
  • Claim 1 serves to achieve this object.
  • the powder particles Due to the minimization of the conveying path, the powder particles are not damaged or only to a considerably lesser extent, and segregation and harmful caking do not take place.
  • the powder is thus dispensed uniformly in unmixed quality from the dispensing nozzles, so that there are no “specks” or other surface defects in the coating.
  • the application devices and the powder container are arranged one above the other in a vertical orientation and the powder feed path also runs vertically to the dispensing nozzle and is sprayed out vertically therefrom.
  • the powder conveying path is straight in this arrangement, i. H. free of any deflection that could contribute to the segregation or caking mentioned.
  • the dispensing nozzles can be pivoted, in particular arranged in planes lying normal to a workpiece surface to be coated, these planes being able to be oriented, for example, in the conveying direction of the workpieces.
  • Fig. 1 shows a cross section
  • FIG. 3 shows a partial longitudinal section through a powder coating system for a car body
  • FIG. 4 shows a partial cross section through the powder coating system according to FIG. 3.
  • FIG. 5 shows a modification of the powder coating system according to FIG. 3.
  • a cabin containing a powder coating system according to the invention is horizontally divided into an upper part 2 and a lower part 4.
  • the upper part 2 hangs for example on a building ceiling, while the lower part 4 is supported on the floor of the building, not shown.
  • the floor of the cabin is formed by a separate horizontal conveyor belt 3, which discharges excess powder from the cabin for recovery and enables the cabin to be walked on, as is known per se.
  • the conveyor belt 14 has between its two lateral fastenings or edges 10, 12, a central part 13 with suspension devices, on which workpieces W with horizontal surface expansion, such as sheets, are suspended in a horizontal position, so that their surfaces 15 to be coated point downward.
  • two units generally designated by the reference numerals 20, 21, with application devices 22, powder conveyors (not shown) and powder containers 24 are provided below the conveyor belt 14 in the conveying direction F.
  • the application devices 22 are arranged vertically above the respective powder container 24 and, with their dispensing nozzles 23, are directed vertically towards the undersides 15 of the workpieces W to be coated.
  • the application devices 22 of each unit 20, 21 each form a battery arranged in a row transversely to the conveying direction F with a single common powder container 24, with each application device 22 having a powder feed pipe 25 vertically aligned with the associated dispensing nozzle 23 down into the powder 26 of the respective powder container 24 dips into it.
  • All application devices 22 of a unit 20 or 21 are provided with a cladding 21 which prevents falling powder from adhering.
  • the application devices 22 of the first unit 20 in the conveying direction F are laterally offset from the application devices 22 of the second unit 21, in such a way that an application device of the second unit 21 is in the middle of the distance a comes to lie between two application devices of the first unit 20.
  • a vertical double arrow H indicates an adjustment mobility of the units 20, 21 in the vertical direction for setting the vertical distance y of the dispensing nozzles 23 from the workpiece surfaces to be coated.
  • the unit 20 or 21 can be moved out of the cabin 2, 4 into a cleaning position in the direction of the arrow R parallel to the arrow T.
  • the powder containers 24 can be supplied with powder through laterally arranged powder tanks 30, 32, namely the powder container 24 of the first unit 20 with recycled circuit powder from the tank 30 and the powder container 24 of the second unit 21 with fresh powder from the tank 32. By coating first with recovered powder and then with fresh powder, the highest coating quality is achieved.
  • one or more sensors for example ultrasonic sensors 33, for detecting the powder level in the respective powder container and control modules 35 for controlling the quantity of conveyed air can be provided in each unit 20, 21.
  • the powder conveyors are designed in the usual way as injectors and are neither shown nor described here.
  • the dispensing nozzles 23 can be pivoted in the plane of the drawing, that is to say in a plane running normal to the workpieces in the conveying direction, by swivel angle z limited to 180 ° in adaptation to the contour of the workpiece surface to be coated.
  • the swivel setting can preferably be controlled individually for each dispensing nozzle in such a way that the dispensing nozzles are always brought to the workpiece surface in an optimal spray position when the workpieces pass.
  • the swivel adjustability can also be provided in other planes, for example in planes running transversely to the conveying direction F, and can be limited to individual dispensing nozzles 23, for example to nozzles of the battery 20 arranged on the outside in FIG. 1.
  • FIGS. 3 to 5 show powder coating systems according to the invention for coating car bodies 40, which are conveyed in a hanging manner in the direction of arrow F by a cabin (not shown) by means of a conveying device 14.
  • a cabin not shown
  • a conveying device 14 means of a conveying device 14.
  • the car bodies are suspended over arms 41 and in the embodiment according to FIG. 5 are carried by the conveyor device 14 through the cabin by means of supports 42; otherwise both versions are the same.
  • the units 20; 21 for the application of powder are constructed as described with reference to FIGS. 1 and 2 and are also given the reference numbers 20, 21 here, however the units arranged above the underside of the body with the reference number 20 and those below the top of the body 40 Units with the reference number 21 are assigned. These units are combined into groups, each with a plurality of application devices 22 and one powder container 24, as shown in FIG. 4.
  • both units 20 and 21 can oscillate in the transverse direction T, as is explained with reference to FIG. 1.
  • the entire unit 21 or individual application devices 22 thereof are controlled in the direction H vertically to the body and by limited angles z such that an optimum distance y 'between the unit 21 and the vehicle body to be coated can be maintained automatically at any time.
  • the units 21 accordingly move relative to the upper side of the car body 40, the contour of which follows in the vertical direction on the paths a shown in dashed lines in FIGS. 3 and 5.
  • the displacement and pivoting of the unit 21 in the direction of the curved arrow S takes place, for. B. with a displacement and pivoting unit 52 which is controlled by a control unit 53.
  • the distance between the unit 21 and the body is measured with sensors, e.g. B. with an optical distance measurement, detected and evaluated in the control unit 53. If it deviates from a specified distance, the unit is automatically replenished to the correct distance.
  • the units 20 need not be movable in the vertical direction and in the pivoting direction, because the optimal position of the application devices 22 relative to the underside of the car body 40 remains essentially constant. This makes the horizontal path b of the application devices above the body floor understandable.
  • the horizontal displacement of the unit 20 takes place with displacement units 50, which are controlled via the control unit 53.
  • additional side application devices 43 are shown, which likewise do not participate in the conveying movement F, but can be pivoted by limited angles s with respect to the body 40, in order to always ensure an optimal position of the application devices 43 with respect to the side walls of the body.
  • the application devices 43 are brought into the desired position by means of swiveling devices 51, which are controlled by the control unit 53.

Landscapes

  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne une installation de revêtement par poudre comprenant au moins un dispositif d'application (22) muni d'une buse de sortie (23) à laquelle est acheminée de la poudre de recouvrement au moyen d'un convoyeur de poudre, prélevée au préalable dans un réservoir de poudre (24). Cette installation se caractérise en ce que la voie d'acheminement de la poudre (x) est dimensionnée de manière à être la plus courte possible entre le réservoir de poudre (24) et la buse de sortie (23) du dispositif d'application (22).
PCT/EP1999/009094 1998-11-24 1999-11-24 Installation de revetement par poudre WO2000030763A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19854225 1998-11-24
DE19854225.9 1998-11-24
DE19928607.8 1999-06-22
DE19928607A DE19928607A1 (de) 1998-11-24 1999-06-22 Pulverbeschichtungsanlage

Publications (2)

Publication Number Publication Date
WO2000030763A2 true WO2000030763A2 (fr) 2000-06-02
WO2000030763A3 WO2000030763A3 (fr) 2000-11-23

Family

ID=7888872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/009094 WO2000030763A2 (fr) 1998-11-24 1999-11-24 Installation de revetement par poudre

Country Status (2)

Country Link
DE (1) DE19928607A1 (fr)
WO (1) WO2000030763A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6641778B2 (en) 2001-05-17 2003-11-04 National Research Council Of Canada Device and method for regulating flow of particulate material, especially small flows of fine powder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11950677B2 (en) 2019-02-28 2024-04-09 L'oreal Devices and methods for electrostatic application of cosmetics

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416492A (en) * 1967-04-21 1968-12-17 Internat Fastener Corp Coating apparatus for threaded fasteners
FR2350146A2 (fr) * 1976-05-07 1977-12-02 Salasec Dispositif de dosage et de distribution de produits pulverulents
DE3319426A1 (de) * 1983-05-28 1984-11-29 Wolfgang 7970 Leutkirch Dentler Salzmaschine zum trockensalzen von kaese
US4505781A (en) * 1981-08-20 1985-03-19 Glaverbel Method of reducing light reflection from glass surfaces
US5368219A (en) * 1993-11-04 1994-11-29 Nordson Corporation Method and apparatus for applying solder flux to a printed circuit
US5660633A (en) * 1991-11-01 1997-08-26 Nisshin Flour Milling Co., Ltd. Powder supplying apparatus and powder spraying apparatus
DE19702800A1 (de) * 1996-04-26 1998-07-23 Peter Dr Dresler Verfahren und Vorrichtung zum elektrostatischen Beschichten von Gegenständen in einer Pulverwolke

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416492A (en) * 1967-04-21 1968-12-17 Internat Fastener Corp Coating apparatus for threaded fasteners
FR2350146A2 (fr) * 1976-05-07 1977-12-02 Salasec Dispositif de dosage et de distribution de produits pulverulents
US4505781A (en) * 1981-08-20 1985-03-19 Glaverbel Method of reducing light reflection from glass surfaces
DE3319426A1 (de) * 1983-05-28 1984-11-29 Wolfgang 7970 Leutkirch Dentler Salzmaschine zum trockensalzen von kaese
US5660633A (en) * 1991-11-01 1997-08-26 Nisshin Flour Milling Co., Ltd. Powder supplying apparatus and powder spraying apparatus
US5368219A (en) * 1993-11-04 1994-11-29 Nordson Corporation Method and apparatus for applying solder flux to a printed circuit
DE19702800A1 (de) * 1996-04-26 1998-07-23 Peter Dr Dresler Verfahren und Vorrichtung zum elektrostatischen Beschichten von Gegenständen in einer Pulverwolke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6641778B2 (en) 2001-05-17 2003-11-04 National Research Council Of Canada Device and method for regulating flow of particulate material, especially small flows of fine powder

Also Published As

Publication number Publication date
WO2000030763A3 (fr) 2000-11-23
DE19928607A1 (de) 2000-05-25

Similar Documents

Publication Publication Date Title
EP1931480B2 (fr) Dispositif et procede destines a separer la peinture humide perdue lors de la pulverisation
DE69729578T2 (de) Flüssigkeitsabgabevorrichtung und -verfahren
DE102005048579A1 (de) Vorrichtung und Verfahren zum Abtrennen von Nasslack -Overspray
DE102016102944B4 (de) Leergut-Sortiereinrichtung und Leergut-Rücknahmesystem
DE3722734A1 (de) Verfahren und anlage zum serienweisen beschichten von werkstuecken
DE102011017347A1 (de) Behandlungseinheit, Anlage und Verfahren zur Oberflächenbehandlung von Gegenständen
EP0913203B1 (fr) Méthode et appareil de revêtement par poudre avec alimentation d'air de purge
EP0777534B1 (fr) Dispositif de mise en peinture de pieces par pulverisation
DE102011121343A1 (de) Beschichtungsanlage und entsprechendes Betriebsverfahren
EP0913204A1 (fr) Méthode et appareil de revêtement par poudre
DE4423254A1 (de) Pneumatische Fördervorrichtung für Pulver, insbesondere Beschichtungspulver
EP0763385A1 (fr) Procédé de transport d'un matériaux pulvérulent au moyen d'un injecteur
DE19637730C1 (de) Verfahren zum automatischen Beschichten von Werkstücken
WO2000030763A2 (fr) Installation de revetement par poudre
DE20217416U1 (de) Vorrichtung zum Beschichten eines Werkstücks mit Pulver
EP0730917A1 (fr) Arrangement pour soupapes de contrÔle pivotables pour canaux de distribution d'air sous pression, sous les rouleaux d'un transporteur à rouleaux pour boucles de fil
EP0395855B1 (fr) Procédé et dispositif pour répartir des petites pièces comme des tessons de verren
EP0163974A2 (fr) Appareil pour le revêtement par pulvérisation des objets
DE102007061498B3 (de) Verfahren und Vorrichtung zum Pulverbeschichten von Holzsubstraten
DE102006014101A1 (de) Vorrichtung zur Spritzbeschichtung von Werkstücken
EP0374558B1 (fr) Procédé et dispositif pour étendre régulièrement un mélange réactif coulable sur une largeur donnée d'un substrat en mouvement continu pendant la fabrication de feuilles de mousse
DE102019007941B4 (de) Vorrichtung zur Herstellung eines dreidimensionalen Objektes
EP4316670A1 (fr) Dispositif et procédé de revêtement d'objets de préférence automatique
DE102017119341B4 (de) Verfahren und Vorrichtung zur Behandlung von Pressblechen in der Leiterplattenlamination
DE102020000812A1 (de) Verfahren und Vorrichtung zum Versehen von Flachglaselementen mit einem Korrosionssschutz- und Trennmittelauftrag

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

122 Ep: pct application non-entry in european phase