EP0777534B1 - Dispositif de mise en peinture de pieces par pulverisation - Google Patents

Dispositif de mise en peinture de pieces par pulverisation Download PDF

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Publication number
EP0777534B1
EP0777534B1 EP96917347A EP96917347A EP0777534B1 EP 0777534 B1 EP0777534 B1 EP 0777534B1 EP 96917347 A EP96917347 A EP 96917347A EP 96917347 A EP96917347 A EP 96917347A EP 0777534 B1 EP0777534 B1 EP 0777534B1
Authority
EP
European Patent Office
Prior art keywords
spray
coating
powder
booth
paint
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
EP96917347A
Other languages
German (de)
English (en)
Other versions
EP0777534A1 (fr
Inventor
Herbert Reiss
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.)
Tegometall International AG
Original Assignee
Tegometall International 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 Tegometall International AG filed Critical Tegometall International AG
Priority to SI9630029T priority Critical patent/SI0777534T1/xx
Publication of EP0777534A1 publication Critical patent/EP0777534A1/fr
Application granted granted Critical
Publication of EP0777534B1 publication Critical patent/EP0777534B1/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
    • B05B16/00—Spray booths
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/46—Spray booths

Definitions

  • the invention relates to a device for spray coating of workpieces with color, the at least two Coating booths arranged along a conveying path of the workpieces and has a spray device.
  • a such spray coating device is particularly for electrostatic powder coating suitable.
  • the principle of electrostatic powder coating is used primarily for painting sheet metal and finished parts used because it is particularly economical and environmentally friendly is. Furthermore, powder coating systems can be used achieve high throughput of paint.
  • the known coating systems therefore have one Suction device on to the excess powder in the Color powder cycle attributed.
  • color powder particles always remain stick that when changing colors for a color mix and thus cause contamination.
  • the coating booth must be cleaned with every color change will. This always results in costly downtimes in the coating system.
  • the object of the invention is therefore an economical Device for spray coating workpieces to provide, which enables a quick color change.
  • the cabin parts can be moved across the conveyor line of the Spread workpieces apart.
  • the coating booth is thus easily accessible and quick and effective clean.
  • the coating booths are cylindrical. This leads to to a further significant reduction in cleaning times when changing colors, because of the cylindrical design the interior walls of the cabin corners and edges, from which paint deposits difficult to remove, avoid.
  • This advantageous embodiment of the cabin interior walls can also be independent of the double cabin design according to the invention to improve the cleaning ability in use conventional spray coaters.
  • the spray device on one between the coating booths arranged running rail arranged movably, on the track section an additional cleaning device is provided for the spray device.
  • this cleaning device possible color deposits the spraying device, particularly at an extreme Color change, e.g. from black to white, for pollution can lead on the paint, remove easily and quickly.
  • the Invention is a suction device in the middle of the bottom of the Coating cabin let in, the cabin floor additionally funnel-shaped and with a ventilated Fluid plate can be provided.
  • the arrangement of the suction device in the cabin floor below the workpiece on the one hand an improvement in the application efficiency, because the paint powder delivered by the spray device lasts longer is kept in the vicinity of the paint.
  • Furthermore can through this arrangement of the suction device a coating booth with an extremely small footprint.
  • suction device described can also be used independently of the double cabin design according to the invention in advantageously in the already known spray coating devices deploy.
  • the spray device consists of at least two rows spray guns arranged vertically one above the other the coating booth on both sides of the conveyor line of the Workpieces are arranged opposite one another.
  • the above spraying device are in the coating booth two rows of on each side of the conveyor line spray guns arranged vertically one above the other, the distance between the opposing rows of spray guns is different.
  • This configuration of the Spraying device has the advantage that it lies close together Spray gun rows Problem areas of the paint get coated while going through the bigger spaced rows, which also have special spray gun nozzles can have, perform a surface covering.
  • the spray device can also have a lifting device be coupled in order to achieve an optimal layer thickness distribution, especially on smooth surfaces to be painted, to achieve.
  • the spray coating device according to the invention shown in FIG. 1 has two coating booths 1 and 2 arranged along a conveyor section 5 .
  • Each coating booth consists of two essentially symmetrical halves of the booth, which are arranged on both sides of the conveyor section 5 .
  • the side walls of the coating booths are designed as cylindrical surfaces, the coating booths having an essentially circular base area in the closed state.
  • the cylindrical design of the inside of the coating booth makes it easier to remove paint powder deposits, as corners and edges that are difficult to access are largely avoided.
  • the two car parts of the coating booths can be displaced along two running rails 3 which are arranged under the coating booth and which are preferably arranged perpendicular to the conveying path.
  • the two parts of the coating booth 2 are pulled apart along these running rails 3 transversely to the conveyor path in order to be able to clean these booths for a color change.
  • a running rail 7 on which a spray device 8 shown in the coating booth 1 in operation is movably arranged.
  • Each coating booth also has a paint powder storage container 9 and a paint powder metering device 10 connected to it.
  • the metering devices 10 each have connections to which the powder feed 11 connected to the spray device 8 can be detachably connected, as shown in the coating booth 1 in operation.
  • a suction device 12 is provided in the booth floor, which is connected to a powder recovery system 13 .
  • this device 13 which works, for example, according to the cyclone principle, the paint powder sucked out of the coating booth can be filtered out of the coating booth exhaust air.
  • the powder recovery device 13 is also connected to the powder storage container 9 in order to return the recovered paint powder to the paint powder cycle.
  • the powder recovery devices 13 coupled to the coating booths 1 and 2 can each be detachably coupled to a final filter system 14 located between the coating booths, as is shown in the coating booth 1 in operation.
  • the final filter system 14 is used to clean the exhaust air extracted from the coating booth.
  • a cleaning device 15 is additionally provided between the coating booths 1 and 2 , with which possible paint deposits on the spray device 8 can be removed automatically, for example by means of granules.
  • the spray coating device has a control device 17 for fully automatic regulation of the entire coating process, including color changes.
  • This control device is connected to a fire suppression system 16 in order to smother fires in the colored powder.
  • FIG. 2 shows a cross section through the coating booth 1 which is in operation.
  • An opening 25 of the suction device 12 is embedded in the center of the cabin floor directly below the workpiece to be painted.
  • the cabin floor is designed in a funnel shape with respect to this suction opening 25 , in order to make it easy to suck off the excess paint powder which is deposited in the coating cabin.
  • the cabin floor is provided with a fluid plate 24 operated by compressed air, the compressed air on the fluid plate producing a floating paint powder particle stream moving in the direction of opening 25 of the suction device 12 .
  • the described design of the paint powder suction device enables an effective suction of the paint powder excess while largely avoiding deposits on the coating booth walls.
  • the spray device 8 for the color powder has four rows of vertically guided spray guns 21 , which are in particular designed as tribo guns, with two rows always lying opposite one another in order to produce a stable and homogeneous color powder cloud on the workpiece 18 .
  • the distance between the first two rows of spray guns 21 is chosen to be smaller than the distance between the two second rows.
  • the spray guns 21 which are further apart, have nozzles which generate widely diversified spray jets, and are used above all to cover the large workpiece parts.
  • the rows of spray guns are each movably arranged on a stand 23 by means of a spray gun holding device 22 .
  • the stands 23 are also connected to a lifting device 20 which ensures an oscillating lifting movement of the stands and thus of the rows of spray guns.
  • the oscillating movement of the spray device 8 ensures a uniform distribution of the layer thickness of the paint powder on the workpiece 18 .
  • the paint powder supply of the spray guns 21 takes place vertically from above via the paint powder feed 11 .
  • This configuration of the paint powder feed prevents the formation of a paint powder column in the spray guns 21 when the coating booth is started up, which would occur from below due to the weight of the powder particles in the case of a paint powder feed.
  • the spray device 8 starts the spraying operation.
  • the colored powder particles fed from the colored powder storage container 9 via the powder metering device 10 and the powder feed 11 into the spray device 8 are electrically charged in the spray guns 21 and ejected via the nozzles of the spray guns.
  • the arrangement of vertical spray gun rows on both sides of the conveyor line creates a standing color powder cloud on the workpiece, which ensures a high application efficiency.
  • the use of several differently disputed spray gun rows with different nozzle sets also enables a uniform coating of both large workpiece parts and corners and edges.
  • the spray operation is first by means of the further spaced rows of spray guns, that generate a wide-ranging spray, a large coverage of the workpiece to be painted and then using the closer rows of spray guns a cover with more directed spray jets made of problem areas.
  • the rows of spray guns can be moved along the stands 23 by means of the spray gun holders 22 in order to be able to completely coat even wide workpieces.
  • the workpiece is, for example, at a belt speed of 6 m / min. passed the rows of spray guns.
  • the excess paint powder which does not adhere to the workpiece, is sucked down by means of the suction device 12 arranged below the workpiece.
  • the compressed air-operated fluid plate 24 located on the cabin floor generates a floating paint powder particle flow in the direction of the opening 25 of the suction device 12 , via which the paint powder together with the exhaust air is fed into the powder recovery device 13 .
  • the color powder is filtered out in the powder recovery device 13 and returned to the color powder circuit.
  • the color powder supply for the spray device 8 is interrupted.
  • the powder feed 11 and the spraying device 8 are then blown free of color deposits of the first color by means of pulsating compressed air.
  • the powder feed 11 is then decoupled from the powder metering device 10 for the first color and the two cabin parts of the coating device are moved apart. Then the spraying device is moved along the running rail into the coating booth loaded with the second paint. If an extreme color change is provided, for example from dark brown to white, an additional cleaning step of the spray device 8 is carried out in the cleaning device 15 arranged on the running rail.
  • the spraying device 8 After the spraying device 8 has entered the coating booth for the second color, the latter is closed and the powder feed 11 is coupled to the powder metering device 10 for the second color.
  • the color change process like the spraying process, can be controlled automatically by means of the control device 17 .

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Ce dispositif de mise en peinture de pièces par pulvérisation comprend au moins deux cabines de mise en peinture (1, 2) situées le long de la voie de transport (5) des pièces et un pulvérisateur (8). Les cabines de mise en peinture (1, 2) sont constituées de deux parties qui peuvent être séparées l'une de l'autre de sorte que le pulvérisateur (8) puisse être placé entre les cabines de pulvérisation.

Claims (11)

  1. Dispositif d'enduction par pulvérisation de pièces à l'aide de peinture, comportant au moins deux cabines de peinture (1, 2) disposées le long d'un trajet d'acheminement (5) des pièces, caractérisé en ce que les cabines d'enduction (1, 2) sont disposées l'une derrière l'autre sur le trajet d'acheminement (5), chaque cabine d'enduction comportant deux éléments de cabine qui sont disposés de part et d'autre du trajet d'acheminement et peuvent s'écarter l'un de l'autre transversalement au sens d'acheminement, et un dispositif de pulvérisation (8) est disposé sur le trajet d'acheminement (5), de façon à pouvoir être transféré entre les cabines d'enduction (1, 2) le long du trajet d'acheminement lorsque les éléments de cabine sont éloignés l'un de l'autre.
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de pulvérisation (8) est déplaçable en translation le long d'un rail de roulement (7) disposé entre les cabines d'enduction (1, 2) le long du trajet d'acheminement (5).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les parois intérieures des cabines d'enduction (1, 2) sont de forme cylindrique.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'un dispositif de nettoyage (15) pour le dispositif de pulvérisation (8) est disposé entre les cabines d'enduction (1, 2).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce qu'un dispositif d'aspiration (12) est disposé en position centrale au fond de la cabine d'enduction (1, 2), l'enduction s'effectuant par pulvérisation de peinture en poudre.
  6. Dispositif selon la revendication 5, caractérisé en ce que le fond des cabines descend en forme d'entonnoir vers le dispositif d'aspiration (12).
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce qu'une plaque de fluide ventilée (24) est disposée au fond des cabines.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de pulvérisation (8) comporte au moins deux rangées de pistolets de pulvérisation superposés verticalement (21) qui, dans la cabine d'enduction (1, 2), sont disposées en vis-à-vis de part et d'autre du trajet d'acheminement (5) des pièces.
  9. Dispositif selon la revendication 8, caractérisé en ce que le dispositif de pulvérisation (8) comporte deux autres rangées de pistolets de pulvérisation superposés verticalement (21) qui, dans la cabine d'enduction (1, 2), sont disposées en vis-à-vis de part et d'autre du trajet d'acheminement (3) des pièces avec un écartement supérieur à celui des autres rangées de pistolets de pulvérisation.
  10. Dispositif selon la revendication 8 ou 9, caractérisé en ce que le dispositif de pulvérisation (8) est relié à un dispositif de levage (20).
  11. Dispositif selon l'une des revendications 8 à 10, caractérisé en ce que les conduites d'alimentation en peinture en poudre (11) apportant de la peinture en poudre aux pistolets de pulvérisation desservent les pistolets de pulvérisation par le haut.
EP96917347A 1995-06-27 1996-06-14 Dispositif de mise en peinture de pieces par pulverisation Expired - Lifetime EP0777534B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630029T SI0777534T1 (en) 1995-06-27 1996-06-14 Workpiece spray-painting device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19523319A DE19523319A1 (de) 1995-06-27 1995-06-27 Vorrichtung zur Sprühbeschichtung von Werkstücken mit Farbe
DE19523319 1995-06-27
PCT/DE1996/001055 WO1997001395A1 (fr) 1995-06-27 1996-06-14 Dispositif de mise en peinture de pieces par pulverisation

Publications (2)

Publication Number Publication Date
EP0777534A1 EP0777534A1 (fr) 1997-06-11
EP0777534B1 true EP0777534B1 (fr) 1998-11-25

Family

ID=7765360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96917347A Expired - Lifetime EP0777534B1 (fr) 1995-06-27 1996-06-14 Dispositif de mise en peinture de pieces par pulverisation

Country Status (24)

Country Link
US (1) US5861062A (fr)
EP (1) EP0777534B1 (fr)
JP (1) JP3238413B2 (fr)
KR (1) KR100361416B1 (fr)
AR (1) AR002595A1 (fr)
AT (1) ATE173656T1 (fr)
AU (1) AU695037B2 (fr)
BR (1) BR9606499A (fr)
CA (1) CA2198454A1 (fr)
CZ (1) CZ286956B6 (fr)
DE (2) DE19523319A1 (fr)
DK (1) DK0777534T3 (fr)
ES (1) ES2125728T3 (fr)
HU (1) HU220812B1 (fr)
MX (1) MX9701326A (fr)
NO (1) NO970765L (fr)
PL (1) PL184564B1 (fr)
RO (1) RO119348B1 (fr)
RU (1) RU2146564C1 (fr)
SI (1) SI0777534T1 (fr)
SK (1) SK281555B6 (fr)
TR (1) TR199700120T1 (fr)
WO (1) WO1997001395A1 (fr)
ZA (1) ZA965415B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19616220A1 (de) * 1996-04-23 1997-10-30 Erich Kraemer Pulverbeschichtungskabine
DE19722773C1 (de) * 1997-06-02 1998-11-19 Manfred Goettling Pulverbeschichtungskabine mit drehbarem Kabinenwandträger
US6833031B2 (en) * 2000-03-21 2004-12-21 Wavezero, Inc. Method and device for coating a substrate
US6914805B2 (en) * 2002-08-21 2005-07-05 Micron Technology, Inc. Method for building a magnetic keeper or flux concentrator used for writing magnetic bits on a MRAM device
DE20305947U1 (de) * 2003-04-11 2003-06-18 Wagner Ag Altstaetten J Vorrichtung zur Reinigung einer Pulverbeschichtungskabine und Pulverbeschichtungskabine mit Reinigungsvorrichtung
US20070266939A1 (en) * 2003-11-20 2007-11-22 Mitsuyoshi Kumata Powder Coating System
DE102008004960A1 (de) * 2008-01-18 2009-07-23 Thermotec Gmbh Verfahren und Vorrichtung zum elektrostatischen Beschichten
DE102010032143A1 (de) * 2010-07-24 2012-01-26 Eisenmann Ag Anlage zur Oberflächenbehandlung von Gegenständen
EP2641665A1 (fr) * 2012-03-19 2013-09-25 Deceuninck NV Procédé en plusieurs étapes pour éléments de construction entièrement colorés
CN103801488B (zh) * 2014-02-17 2017-02-01 中山市君禾机电设备有限公司 一种应用于粉末喷涂线的立式圆形喷房
CN109876959A (zh) * 2019-02-25 2019-06-14 韶关旭日国际有限公司 一种喷涂生产线
DE102022110006A1 (de) 2022-04-26 2023-10-26 Meeh Pulverbeschichtungs- und Staubfilteranlagen GmbH Sprühanlage

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FR2442080A1 (fr) * 1978-11-21 1980-06-20 Europ Equip Menager Installation de poudrage electrostatique d'objets
DE3014114C2 (de) * 1980-04-12 1982-04-29 Gema AG Apparatebau, 9015 St. Gallen Einrichtung zum automatischen Beschichten von Gegenständen mit einer Spritzvorrichtung
DE3131565C2 (de) * 1981-08-10 1984-12-13 Ransburg-Gema AG, St.Gallen Kabine zum Sprühbeschichten von Gegenständen mit Pulver
US4640220A (en) * 1984-06-06 1987-02-03 Electropainting Sales Pty. Ltd. Paint booth assembly
CH668008A5 (de) * 1985-04-30 1988-11-30 H U Ramseier Fa Elektrostatische pulverbeschichtungsanlage.
DE3602172C1 (de) * 1986-01-22 1986-12-11 Mannesmann AG, 40213 Düsseldorf Vorrichtung zum Bespruehen von Teilen
DE3640699A1 (de) * 1986-11-28 1988-06-09 Gema Ransburg Ag Kabine zum spruehbeschichten von objekten
DE3838926A1 (de) * 1988-11-17 1990-05-23 Columbus System Patent Ag Kammer fuer die verschiedenen behandlungsstationen eines gegenstandes beim elektrostatischen pulverbeschichten
DE3838927A1 (de) * 1988-11-17 1990-05-23 Columbus System Patent Ag Langgut-pulverbeschichtungsanlage
US4932316A (en) * 1989-04-26 1990-06-12 Flakt, Inc. Paint spray booth with movable inner walls
DE9017994U1 (fr) * 1990-03-13 1993-07-29 Gronbach, Wilfried, 83512 Wasserburg, De
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US5288324A (en) * 1992-12-18 1994-02-22 Shaneyfelt Jack L Multi-color powder coat paint recovery apparatus

Also Published As

Publication number Publication date
NO970765D0 (no) 1997-02-19
RU2146564C1 (ru) 2000-03-20
JPH10507685A (ja) 1998-07-28
RO119348B1 (ro) 2004-08-30
ES2125728T3 (es) 1999-03-01
AU695037B2 (en) 1998-08-06
CZ42697A3 (en) 1997-08-13
TR199700120T1 (tr) 1997-08-21
PL318881A1 (en) 1997-07-07
DK0777534T3 (da) 1999-08-09
HU220812B1 (hu) 2002-05-28
PL184564B1 (pl) 2002-11-29
WO1997001395A1 (fr) 1997-01-16
BR9606499A (pt) 1997-12-23
JP3238413B2 (ja) 2001-12-17
SI0777534T1 (en) 1999-02-28
CZ286956B6 (en) 2000-08-16
HUP9702153A3 (en) 2000-07-28
NO970765L (no) 1997-02-19
DE19523319A1 (de) 1997-01-09
KR100361416B1 (ko) 2003-02-14
HUP9702153A2 (hu) 1999-05-28
DE59600863D1 (de) 1999-01-07
SK23097A3 (en) 1997-08-06
EP0777534A1 (fr) 1997-06-11
MX9701326A (es) 1998-02-28
SK281555B6 (sk) 2001-05-10
ZA965415B (en) 1997-02-11
AU5996396A (en) 1997-01-30
US5861062A (en) 1999-01-19
CA2198454A1 (fr) 1997-01-16
ATE173656T1 (de) 1998-12-15
AR002595A1 (es) 1998-03-25

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