EP0777534A1 - Workpiece spray-painting device - Google Patents

Workpiece spray-painting device

Info

Publication number
EP0777534A1
EP0777534A1 EP96917347A EP96917347A EP0777534A1 EP 0777534 A1 EP0777534 A1 EP 0777534A1 EP 96917347 A EP96917347 A EP 96917347A EP 96917347 A EP96917347 A EP 96917347A EP 0777534 A1 EP0777534 A1 EP 0777534A1
Authority
EP
European Patent Office
Prior art keywords
coating
spray
powder
paint
booths
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.)
Granted
Application number
EP96917347A
Other languages
German (de)
French (fr)
Other versions
EP0777534B1 (en
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/en
Publication of EP0777534A1 publication Critical patent/EP0777534A1/en
Application granted granted Critical
Publication of EP0777534B1 publication Critical patent/EP0777534B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 workpieces with paint, which has at least two coating booths arranged along a conveying path of the workpieces and a spray device.
  • a spray coating device is particularly suitable for electrostatic powder coating.
  • the known coating systems therefore have a suction device in order to return the excess paint powder into the paint powder cycle.
  • color powder particles always stick to the coating booth walls, which ensure a color mixture and thus contamination when the color changes.
  • the coating booth In order to avoid this, the coating booth must be cleaned with every color change. This always results in costly downtimes in the coating system.
  • the object of the invention is therefore to provide an inexpensive device for spray coating workpieces, which enables a quick color change.
  • the at least two coating booths arranged along the conveying path of the workpieces are designed in two parts, the booth parts being separable from one another, so that the spray device can be moved between the coating booths.
  • the downtimes during the color change can be reduced considerably, since the spray device can be moved quickly and easily between the coating booths with the different colors due to the two-part construction of the coating booths.
  • the cleaning of the spraying device consisting of a spray gun arrangement can be carried out without problems by blowing it free with compressed air.
  • the cabin parts can be moved apart transversely to the conveying path of the workpieces.
  • the coating booth is thus easily accessible and can be cleaned quickly and effectively.
  • the coating booths are cylindrical. This leads to a further substantial reduction in cleaning times when changing colors, since corners and edges, from which paint deposits are very difficult to remove, are avoided by the cylindrical design of the interior walls of the cabin.
  • This advantageous embodiment of the interior walls of the cabin can also be used independently of the double cabin design according to the invention to improve the possibility of cleaning in conventional spray coating devices.
  • the spray device is movably arranged on a running rail arranged between the coating booths, an additional cleaning device for the spray device being provided on the running rail section.
  • an additional cleaning device for the spray device being provided on the running rail section.
  • a suction device is embedded in the center of the floor of the coating booth, the booth floor additionally being funnel-shaped and can be provided with a ventilated fluid plate.
  • the arrangement of the suction device in the cabin floor below the workpiece enables on the one hand an improvement in the application efficiency since the paint powder released by the spraying device is kept longer in the area surrounding the paint. Furthermore, this arrangement of the suction device can produce a coating booth with an extremely small footprint. the.
  • the additional funnel-shaped design of the cabin floor and the attachment of a ventilated fluid plate also enable effective suction of the excess paint powder during the coating process. Color powder deposits on the cabin walls are thus largely prevented, which considerably simplifies the cleaning of the coating booths.
  • the suction device described can also be used in an advantageous manner in the already known spray coating devices, regardless of the double cabin design according to the invention.
  • the spray device consists of at least two rows of spray guns arranged vertically one above the other, which are arranged opposite one another in the coating booth on both sides of the conveying path of the workpieces. This design of the spraying device enables a stable and largely uniform color powder cloud to be formed in the area of the paint, which leads to a significant improvement in the application efficiency.
  • a largely uniform application of the color powder on the paint is also in problem areas, such as Corners and edges guaranteed.
  • the arrangement in mutually opposite, vertically placed rows ensures a substantial reduction in operating costs, since the loss of color powder can be significantly reduced due to the formation of powder clouds.
  • fewer spray guns are required, which reduces both the acquisition costs and the maintenance costs.
  • This spray device can also be used advantageously in conventional coating devices independently of the spray coating device according to the invention with a double cabin.
  • two rows of spray guns arranged vertically one above the other are fitted in the coating booth on both sides of the conveying path, the distance between the rows of spray guns lying opposite one another being different.
  • This configuration of the spraying device has the advantage that problem areas of the paint can be coated due to the closely spaced rows of spray guns, while the larger spaced rows, which can also have special spray gun nozzles, can be used to cover the surface.
  • the spray device can also be coupled to a lifting device in order to achieve an optimal layer thickness distribution, in particular on smooth surfaces to be painted.
  • FIG. 1 shows a top view of the coating device according to the invention
  • FIG. 2 shows a view of the coating booth of the coating device according to the invention along the section line II in FIG. 1.
  • 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 on.
  • Each coating cabin consists of two essentially symmetrical cabin halves, 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 interior of the coating booth facilitates the detachment of paint powder deposits, since corners and edges that are difficult to access are largely avoided.
  • the two cabin parts of the coating booths are along two runways arranged under the coating booth.
  • 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.
  • each coating booth there is a suction device 12 embedded in the booth floor, which is connected to a powder recovery system 13.
  • a suction device 12 embedded in the booth floor, which is connected to a powder recovery system 13.
  • 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 an end 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 any paint deposits Have the gene on the spray device 8 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 change.
  • the control device is connected to a fire suppression system 16 in order to suffocate 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 booth 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 enable the excess paint powder which is deposited in the coating cabin to be suctioned off easily.
  • the cabin floor is provided with a fluid plate 24 operated by means of compressed air, the compressed air on the fluid plate generating a floating powder powder particle stream moving in the direction of opening 25 of the suction device 12.
  • the design of the paint powder suction device described enables an effective suction of the excess paint powder while largely avoiding deposits on the coating booth walls.
  • the spray device 8 for the paint powder has four rows of vertically guided spray guns 21, which are designed in particular as tribo guns, two rows always lying opposite one another in order to produce a stable and homogeneous paint 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 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.
  • Hanging egg carriages 6 are arranged along the conveying path 5 and have a suspension 19 for fastening the workpiece 18 to be painted.
  • the spray device 8 starts the spraying operation.
  • the paint powder particles fed from the paint 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 high application efficiency.
  • the use of several differently disputed rows of spray guns with different nozzle sets also enables a uniform coating of both large workpiece parts and corners and edges.
  • first of all the rows of spray guns which generate a broadly diversified spray jet, are used to cover the workpiece to be painted over a large area and then to cover problem areas by means of the spray gun rows which are more closely together with more directed spray jets .
  • 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, through 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.
  • suction powers of up to 8,000 m 3 / h can be generated. If a color change from a first to a second color is provided in the spray coating device, 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. Subsequently, the powder feed 11 from the powder metering device 10 for the The first color is uncoupled and the two 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 spray device 8 After the spray device 8 has been moved into 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

A workpiece spray-painting device has at least two painting booths (1, 2) arranged along the path of transport (5) of the workpieces and a spraying device (8). The painting booths (1, 2) are designed in two parts that may be separated from each other so that the spraying device (8) may be placed between the painting booths.

Description

Vorrichtung zur Sprühbeschichtung von Werkstücken mit ϊ?arbeDevice for spray coating workpieces with ar? Work
Beschreibungdescription
Die Erfindung betrifft eine Vorrichtung zur Sprühbe¬ schichtung von Werkstücken mit Farbe, die wenigstens zwei längs einer Förderstrecke der Werkstücke angeordnete Be- schichtungskabinen und eine Sprühvorrichtung aufweist. Eine solche Sprühbeschichtungsvorrichtung ist insbesondere zur elektrostatischen Pulverbeschichtung geeignet.The invention relates to a device for spray coating workpieces with paint, which has at least two coating booths arranged along a conveying path of the workpieces and a spray device. Such a spray coating device is particularly suitable for electrostatic powder coating.
Das Prinzip der elektrostatischen Pulverbeschichtung wird vor allem zur Lackierung von Blech- und Fertigteilen eingesetzt, da es besonders wirtschaftlich und umweltfreund¬ lich ist. Weiterhin lassen sich mit Pulverbeschichtungssyste- men hohe Durchsatzmengen an Lackiergut erzielen.The principle of electrostatic powder coating is used above all for painting sheet metal and finished parts, since it is particularly economical and environmentally friendly. Furthermore, high throughput quantities of paint can be achieved with powder coating systems.
Bei herkömmlichen Pulverbeschichtungssystemen treten je¬ doch, wie auch bei nach anderen Farbbeschichtungsverfahren arbeitenden Lackieranlagen, Probleme beim Farbwechsel auf. Um nämlich eine homogene und gleichmäßige Beschichtung bei hohem Lackiergutdurchsatz zu erreichen, wird ein konzentrierter Farbpulverstrahl auf das zu lackierende Werkstück gerichtet, wobei jedoch nur ein Teil des Farbpulvers auf dem Werkstück haftet, das übrige Farbpulver sich dagegen in der Anlage ab¬ lagert.In conventional powder coating systems, however, problems occur when changing colors, as is also the case with painting systems which operate according to other color coating processes. In order to achieve a homogeneous and uniform coating with a high throughput of paint, a concentrated paint powder jet is directed onto the workpiece to be painted, but only part of the paint powder adheres to the workpiece, while the rest of the paint powder is deposited in the system.
Die bekannten Beschichtungssysteme weisen deshalb eine Absaugvorrichtung auf, um den Farbpulverüberschuß in den Farbpulverkreislauf zurückzuführen. Insbesondere auf den Be- schichtungskabinenwänden bleiben jedoch immer Farbpulverpar¬ tikel kleben, die bei einem Farbwechsel für eine Farbenmi¬ schung und damit eine Verunreinigung sorgen. Um dies zu ver¬ meiden, muß die Beschichtungskabine bei jedem Farbwechsel ge¬ reinigt werden. Es entstehen somit immer kostspielige Still- Standszeiten in der Beschichtungsanlage.The known coating systems therefore have a suction device in order to return the excess paint powder into the paint powder cycle. In particular, however, color powder particles always stick to the coating booth walls, which ensure a color mixture and thus contamination when the color changes. In order to avoid this, the coating booth must be cleaned with every color change. This always results in costly downtimes in the coating system.
Insbesondere in elektrostatischen Pulverbeschichtungsan- lagen ist außerdem ein relativ hoher Zeitaufwand zur Reini¬ gung bei Farbwechsel notwendig, da die Farbpulverteilchen aufgrund ihrer elektrischen Ladung oft fest an den Beschich- tungskabinen haften. Um einen schnellen Farbwechsel bei Pulverbeschichtungs- anlagen zu ermöglichen, werden bereits Pulverbeschichtungs- systeme verwendet, die mehrere Beschichtungskabinen für ver¬ schiedene Farben aufweisen, so daß immer abwechselnd eine Ka- bine für den Farbwechsel gereinigt werden kann. In der CH 668 008 A5 wird eine solche Pulverbeschichtungsanlage beschrie¬ ben, die die Merkmale des Oberbegriffs des Anspruchs 1 auf¬ weist. Bei dieser bekannten Pulverbeschichtungsanlage sind zwei Beschichtungskabine parallel zueinander angeordnet, die mittels einer Weiche über eine gemeinsame Förderstrecke ver¬ sorgt werden. Diese Anlage ist jedoch sehr kostspielig, da zwei vollständige, mit jeweils einer Sprühvorrichtung verse¬ hene Beschichtungskabinen notwendig sind.In electrostatic powder coating systems in particular, a relatively large amount of time is required for cleaning when changing colors, since the paint powder particles often adhere firmly to the coating booths due to their electrical charge. In order to enable a quick color change in powder coating systems, powder coating systems are already used which have several coating booths for different colors, so that one booth can always be cleaned alternately for the color change. Such a powder coating system is described in CH 668 008 A5, which has the features of the preamble of claim 1. In this known powder coating system, two coating booths are arranged parallel to one another, which are supplied by means of a switch over a common conveyor line. However, this system is very expensive since two complete coating booths, each provided with a spray device, are necessary.
Die Aufgabe der Erfindung ist es deshalb, eine kosten- günstige Vorrichtung zur Sprühbeschichtung von Werkstücken bereitzustellen, die einen schnellen Farbwechsel ermöglicht.The object of the invention is therefore to provide an inexpensive device for spray coating workpieces, which enables a quick color change.
Diese Aufgabe wird bei einer gattungsgemäßen Vorrichtung zur Sprühbeschichtung von Werkstücken durch die im kennzeich¬ nenden Teil des Anspruchs 1 angegebenen Maßnahmen gelöst. Da- nach sind die wenigstens zwei längs der Förderstrecke der Werkstücke angeordneten Beschichtungskabinen zweiteilig aus¬ gelegt, wobei die Kabinenteile voneinander trennbar sind, so daß die Sprühvorrichtung zwischen den Beschichtungskabinen versetzbar ist. Bei der erfindungsgemäßen Sprühbeschichtungsvorrichtung lassen sind die Stillstandszeiten beim Farbwechsel ganz we¬ sentlich reduzieren, da durch den zweiteiligen Aufbau der Be¬ schichtungskabinen die Sprühvorrichtung einfach und schnell zwischen den Beschichtungskabinen mit den verschiedenen Far- ben versetzbar ist. Die Reinigung der aus einer Sprühpisto¬ lenanordnung bestehenden Sprühvorrichtung läßt sich dabei problemlos durch Freiblasen mittels Druckluft ausführen. Der Einsatz nur einer Sprühvorrichtung für beide Beschichtungska¬ binen vermindert weiter wesentlich die Herstellungskosten im Vergleich zu einer Anlage mit zwei komplett ausgerüsteten Be¬ schichtungskabinen. Gemäß einer bevorzugten Ausführungsform der Erfindung lassen sich die Kabinenteile quer zur Förderstrecke der Werkstücke auseinanderfahren. Die Beschichtungskabine ist so¬ mit einfach zugänglich und läßt sich schnell und effektiv reinigen.This object is achieved in a generic device for spray coating workpieces by the measures specified in the characterizing part of claim 1. Thereafter, the at least two coating booths arranged along the conveying path of the workpieces are designed in two parts, the booth parts being separable from one another, so that the spray device can be moved between the coating booths. In the spray coating device according to the invention, the downtimes during the color change can be reduced considerably, since the spray device can be moved quickly and easily between the coating booths with the different colors due to the two-part construction of the coating booths. The cleaning of the spraying device consisting of a spray gun arrangement can be carried out without problems by blowing it free with compressed air. The use of only one spray device for both coating booths further significantly reduces the production costs in comparison to a system with two fully equipped coating booths. According to a preferred embodiment of the invention, the cabin parts can be moved apart transversely to the conveying path of the workpieces. The coating booth is thus easily accessible and can be cleaned quickly and effectively.
Gemäß einer weiteren Ausführungsform der Erfindung sind die Beschichtungskabinen zylindrisch ausgebildet. Dies führt zu einer weiteren wesentlichen Verkürzung der Reinigungszei¬ ten beim Farbwechsel, da durch die zylindrische Ausgestaltung der Kabineninnenwände Ecken und Kanten, aus denen sich Farb¬ ablagerungen nur sehr schwer entfernen lassen, vermieden wer¬ den. Diese vorteilhafte Ausgestaltung der Kabineninnenwände läßt sich auch unabhängig von der erfindungsgemäßen Doppelka¬ binenausführung zur Verbesserung der Reinigungsmöglichkeit in herkömmlichen Sprühbeschichtungsvorrichtungen einsetzen.According to a further embodiment of the invention, the coating booths are cylindrical. This leads to a further substantial reduction in cleaning times when changing colors, since corners and edges, from which paint deposits are very difficult to remove, are avoided by the cylindrical design of the interior walls of the cabin. This advantageous embodiment of the interior walls of the cabin can also be used independently of the double cabin design according to the invention to improve the possibility of cleaning in conventional spray coating devices.
Weiterhin ist gemäß einer vorteilhaften Ausführungsform die Sprühvorrichtung auf einer zwischen den Beschichtungska¬ binen angeordneten Laufschiene beweglich angeordnet, wobei an der Laufschienenstrecke eine zusätzliche Reinigungsvorrich- tung für die Sprühvorrichtung vorgesehen ist. Mit dieser Rei¬ nigungsvorrichtung lassen sich mögliche Farbablagerungen auf der Sprühvorrichtung, die insbesondere bei einem extremen Farbwechsel, z.B. von schwarz auf weiß, zur Verunreinigung auf dem Lackiergut führen können, problemlos und schnell ent- fernen.Furthermore, according to an advantageous embodiment, the spray device is movably arranged on a running rail arranged between the coating booths, an additional cleaning device for the spray device being provided on the running rail section. With this cleaning device, possible paint deposits on the spray device, which are particularly important during an extreme color change, e.g. from black to white, can lead to contamination on the paint, can be removed quickly and easily.
Gemäß einer weiteren vorteilhaften Ausführungsform der Erfindung ist eine Absaugvorrichtung mittig in dem Boden der Beschichtungskabine eingelassen, wobei der Kabinenboden zu¬ sätzlich trichterförmig ausgelegt und mit einer belüfteten Fluidplatte versehen werden kann. Die Anordnung der Absaug¬ vorrichtung im Kabinenboden unterhalb des Werkstücks ermög¬ licht einerseits eine Verbesserung des Aufbringwirkungsgrads, da das von der Sprühvorrichtung abgegebene Farbpulver länger in der Umgebung des Lackierguts gehalten wird. Weiterhin kann durch diese Anordnung der Absaugvorrichtung eine Beschich¬ tungskabine mit extrem kleiner Stellfläche hergestellt wer- den. Die zusätzlich trichterförmige Ausgestaltung des Kabi¬ nenbodens und die Anbringung einer belüfteten Fluidplatte er¬ möglichen darüber hinaus ein effektives Absaugen des Farbpul¬ verüberschusses beim Beschichtungsvorgang. Farbpulverablage- rungen an den Kabinenwänden werden somit weitgehend verhin¬ dert, was die Reinigung der Beschichtungskabinen wesentlich vereinfacht.According to a further advantageous embodiment of the invention, a suction device is embedded in the center of the floor of the coating booth, the booth floor additionally being funnel-shaped and can be provided with a ventilated fluid plate. The arrangement of the suction device in the cabin floor below the workpiece enables on the one hand an improvement in the application efficiency since the paint powder released by the spraying device is kept longer in the area surrounding the paint. Furthermore, this arrangement of the suction device can produce a coating booth with an extremely small footprint. the. The additional funnel-shaped design of the cabin floor and the attachment of a ventilated fluid plate also enable effective suction of the excess paint powder during the coating process. Color powder deposits on the cabin walls are thus largely prevented, which considerably simplifies the cleaning of the coating booths.
Weiterhin kann deshalb auch auf ein in herkömmlichen An¬ lagen oft eingesetztes Innenreinigungssystem zur Ablösung des Farbpulvers von der Beschichtungskabineninnenwand verzichtet werden. Die beschriebene Absaugvorrichtung läßt sich auch un¬ abhängig von der erfindungsgemäßen Doppelkabinenausführung in vorteilhafter Weise in den bereits bekannten Sprühbeschich- tungsvorrichtungen einsetzen. Gemäß einer weiteren vorteilhaften Ausgestaltung der Er¬ findung besteht die Sprühvorrichtung aus wenigstens zwei Rei¬ hen vertikal übereinander angeordneter Sprühpistolen, die in der Beschichtungskabine beiderseits der Förderstrecke der Werkstücke einander gegenüberliegend angeordnet sind. Durch diese Auslegung der Sprühvorrichtung läßt sich im Bereich des Lackierguts eine stabile und weitgehend gleichmäßige Farbpul¬ verwolke ausbilden, was zu einer deutlichen Verbesserung des Aufbringwirkungsgrades führt. Außerdem wird ein weitgehend gleichmäßiger Auftrag des Farbpulvers auf dem Lackiergut auch in Problemzonenbereichen, wie z.B. Ecken und Kanten, gewähr¬ leistet.Furthermore, it is therefore also possible to dispense with an interior cleaning system which is often used in conventional systems for detaching the colored powder from the interior of the coating booth. The suction device described can also be used in an advantageous manner in the already known spray coating devices, regardless of the double cabin design according to the invention. According to a further advantageous embodiment of the invention, the spray device consists of at least two rows of spray guns arranged vertically one above the other, which are arranged opposite one another in the coating booth on both sides of the conveying path of the workpieces. This design of the spraying device enables a stable and largely uniform color powder cloud to be formed in the area of the paint, which leads to a significant improvement in the application efficiency. In addition, a largely uniform application of the color powder on the paint is also in problem areas, such as Corners and edges guaranteed.
Weiterhin sorgt die Anordnung in einander gegenüberlie¬ genden, vertikal plazierten Reihen für eine wesentliche Sen¬ kung der Betriebskosten, da sich der Farbpulververlust auf- grund der Pulverwolkenbildung wesentlich vermindern läßt. Auch werden im Vergleich zu herkömmlichen Sprühvorrichtungen weniger Sprühpistolen benötigt, was sowohl die Anschaffungs¬ ais auch die Wartungskosten reduziert. Diese Sprühvorrichtung kann auch unabhängig von der erfindungsgemäßen Sprühbeschich- tungsvorrichtung mit Doppelkabine in herkömmlichen Beschich- tungsvorriehtungen in vorteilhafter Weise eingesetzt werden. Gemäß einer weiteren vorteilhaften Ausgestaltung der oben genannten Sprühvorrichtung sind in der Beschichtungska¬ bine beiderseits der Förderstrecke jeweils zwei Reihen von vertikal übereinander angeordneten Sprühpistolen angebracht, wobei der Abstand zwischen den sich gegenüberliegenden Sprüh¬ pistolenreihen unterschiedlich ist. Diese Ausgestaltung der Sprühvorrichtung hat den Vorteil, daß sich durch die eng zu¬ sammenliegenden Sprühpistolenreihen Problemstellen des Lak- kierguts beschichten lassen, während sich durch die größer beabstandeten Reihen, die außerdem spezielle Sprühpistolendü¬ sen aufweisen können, eine Flächenabdeckung ausführen läßt.Furthermore, the arrangement in mutually opposite, vertically placed rows ensures a substantial reduction in operating costs, since the loss of color powder can be significantly reduced due to the formation of powder clouds. Compared to conventional spray devices, fewer spray guns are required, which reduces both the acquisition costs and the maintenance costs. This spray device can also be used advantageously in conventional coating devices independently of the spray coating device according to the invention with a double cabin. According to a further advantageous embodiment of the above-mentioned spray device, two rows of spray guns arranged vertically one above the other are fitted in the coating booth on both sides of the conveying path, the distance between the rows of spray guns lying opposite one another being different. This configuration of the spraying device has the advantage that problem areas of the paint can be coated due to the closely spaced rows of spray guns, while the larger spaced rows, which can also have special spray gun nozzles, can be used to cover the surface.
Zusätzlich kann die Sprühvorrichtung noch mit einer Hub¬ einrichtung gekoppelt werden, um so eine optimale Schicht¬ dickenverteilung, insbesondere auf glatten Lackiergutflächen, zu erzielen.In addition, the spray device can also be coupled to a lifting device in order to achieve an optimal layer thickness distribution, in particular on smooth surfaces to be painted.
Ein bevorzugtes Ausführungsbeispiel der Erfindung ist im folgenden anhand der Zeichnung beschrieben. Darin zeigtA preferred embodiment of the invention is described below with reference to the drawing. In it shows
Figur 1 eine Aufsicht der erfindungsgemäßen Beschich- tungsvorrichtung, und Figur 2 eine Ansicht der Beschichtungskabine der erfin¬ dungsgemäßen Beschichtungsvorrichtung entlang der Schnittlinie I-I in Figur 1. Die in Figur 1 dargestellte erfindungsgemäße Sprühbe- schichtungsvorrichtung weist zwei entlang einer Förderstrecke 5 angeordnete Beschichtungskabinen 1 und 2 auf. Jede Be¬ schichtungskabine besteht aus zwei im wesentlichen symmetri¬ schen Kabinenhälften, die beiderseits der Förderstrecke 5 an¬ geordnet sind. Die Seitenwände der Beschichtungskabinen sind als Zylinderflächen ausgebildet, wobei die Beschichtungskabi- nen in geschlossenem Zustand eine im wesentlichen kreisför¬ mige Grundfläche besitzen. Die zylindrische Ausbildung der Beschichtungskabineninnenwände erleichtert das Ablösen von Farbpulverablagerungen, da schwer zugängliche Ecken und Kan¬ ten weitgehend vermieden sind. Die beiden Kabinenteile der Beschichtungskabinen sind längs zweier unter der Beschichtungskabine angeordneter Lauf- schienen 3, die vorzugsweise senkrecht zur Förderstrecke an¬ geordnet sind, verschiebbar. In der in Figur 1 gezeigten Dar¬ stellung sind die beiden Teile der Beschichtungskabine 2 längs dieser Laufschienen 3 quer zur Förderstrecke auseinan- dergezogen, um eine Reinigung dieser Kabinen für einen Farb¬ wechsel vornehmen zu können.1 shows a top view of the coating device according to the invention, and FIG. 2 shows a view of the coating booth of the coating device according to the invention along the section line II in FIG. 1. 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 on. Each coating cabin consists of two essentially symmetrical cabin halves, 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 interior of the coating booth facilitates the detachment of paint powder deposits, since corners and edges that are difficult to access are largely avoided. The two cabin parts of the coating booths are along two runways arranged under the coating booth. rails 3, which are preferably arranged perpendicular to the conveyor line, are displaceable. In the illustration shown in FIG. 1, the two parts of the coating booth 2 are pulled apart along these running rails 3 transversely to the conveying path in order to be able to clean these booths for a color change.
Zwischen den Beschichtungskabinen 1 und 2 befindet sich weiterhin eine Laufschiene 7, an der verfahrbar eine in der in Betrieb befindlichen Beschichtungskabine 1 dargestellte Sprühvorrichtung 8 angeordnet ist.Between the coating booths 1 and 2 there is also a running rail 7, on which a spray device 8 shown in the coating booth 1 in operation is movably arranged.
Jede Beschichtungskabine weist außerdem einen Farbpul¬ vervorratsbehälter 9 und eine daran angeschlossene Farbpul¬ verdosiereinrichtung 10 auf. Die Dosiereinrichtungen 10 haben jeweils Anschlüsse, an die lösbar die mit der Sprüheinrich- tung 8 verbundene Pulverzuführung 11 angeschlossen werden kann, wie bei der in Betrieb befindlichen Beschichtungskabine 1 dargestellt.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.
Weiterhin ist bei jeder Beschichtungskabine eine im Ka¬ binenboden eingelassene Absaugvorrichtung 12 vorgesehen, die mit einer Pulverrückgewinnungsanlage 13 verbunden ist. Mit dieser z.B. nach dem Zyklonprinzip arbeitenden Vorrichtung 13 läßt sich das aus der Beschichtungskabine abgesaugte Farbpul¬ ver aus der Beschichtungskabinenabluft filtern.In addition, in each coating booth there is a suction device 12 embedded in the booth floor, which is connected to a powder recovery system 13. With this e.g. The device 13 working according to the cyclone principle allows the color powder sucked out of the coating booth to be filtered out of the coating booth exhaust air.
Die Pulverrückgewinnungsvorrichtung 13 ist außerdem je- weils mit dem Pulvervorratsbehälter 9 verbunden, um das zu¬ rückgewonnene Farbpulver in den Farbpulverkreislauf zurückzu¬ führen. Die an die Beschichtungskabinen 1 und 2 gekoppelten Pulverrückgewinnungsvorrichtungen 13 können jeweils lösbar mit einer sich zwischen den Beschichtungskabinen befindlichen Endfilteranlage 14 gekoppelt werden, wie dies bei der im Be¬ trieb befindlichen Beschichtungskabine 1 dargestellt ist. Die Endfilteranlage 14 dient zur Reinigung der aus der Beschich¬ tungskabine abgesaugten Abluft.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 an end 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.
Zur Reinigung der Sprühvorrichtung 8 ist zwischen den Beschichtungskabinen 1 und 2 zusätzlich eine Reinigungsvorri¬ chtung 15 vorgesehen, mit der sich eventuelle Farbablagerun- gen auf der Sprühvorrichtung 8 automatisch, z.B. mittels Gra¬ nulat, entfernen lassen.To clean the spray device 8, a cleaning device 15 is additionally provided between the coating booths 1 and 2, with which any paint deposits Have the gene on the spray device 8 removed automatically, for example by means of granules.
Weiterhin weist die Sprühbeschichtungsvorrichtung eineFurthermore, the spray coating device has a
Steuereinrichtung 17 zur vollautomatischen Regelung des ge- samten Beschichtungsvorgangs einschl. Farbwechsels auf. DieseControl device 17 for fully automatic regulation of the entire coating process including color change. This
Steuereinrichtung ist mit einer Brandunterdrückungsanlage 16 verbunden, um Brände im Farbpulver zu ersticken.The control device is connected to a fire suppression system 16 in order to suffocate fires in the colored powder.
Figur 2 zeigt einen Querschnitt durch die sich in Be¬ trieb befindende Beschichtungskabine 1. Eine Öffnung 25 der Absaugvorrichtung 12 ist direkt unterhalb des zu lackierenden Werkstücks mittig im Kabinenboden eingelassen. Der Kabinenbo¬ den ist trichterförmig bezüglich dieser Absaugöffnung 25 aus¬ gelegt, um ein einfaches Absaugen des sich in der Beschich¬ tungskabine niederschlagenden Farbpulverüberschusses zu er- möglichen.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 booth 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 enable the excess paint powder which is deposited in the coating cabin to be suctioned off easily.
Weiterhin ist der Kabinenboden mit einer mittels Druck¬ luft betriebenen Fluidplatte 24 versehen, wobei die Druckluft auf der Fluidplatte einen schwebenden, sich in Richtung Öff¬ nung 25 der Absaugvorrichtung 12 bewegenden Farbpulverparti- kelstrom erzeugt. Die beschriebene Auslegung der Farbpulver¬ absaugvorrichtung ermöglicht ein effektives Absaugen des Farbpulverüberschusses unter weitgehender Vermeidung von Ab¬ lagerungen auf den Beschichtungskabinenwänden.Furthermore, the cabin floor is provided with a fluid plate 24 operated by means of compressed air, the compressed air on the fluid plate generating a floating powder powder particle stream moving in the direction of opening 25 of the suction device 12. The design of the paint powder suction device described enables an effective suction of the excess paint powder while largely avoiding deposits on the coating booth walls.
Die Sprühvorrichtung 8 für das Farbpulver weist vier Reihen vertikal geführter Sprühpistolen 21, die insbesondere als Tribopistolen ausgeführt sind, auf, wobei sich immer je¬ weils zwei Reihen gegenüberliegen, um eine stabile und homo¬ gene Farbpulverwolke am Werkstück 18 zu erzeugen. Der Abstand zwischen den beiden ersten Reihen von Sprühpistolen 21 ist dabei geringer gewählt als der Abstand zwischen den beiden zweiten Reihen.The spray device 8 for the paint powder has four rows of vertically guided spray guns 21, which are designed in particular as tribo guns, two rows always lying opposite one another in order to produce a stable and homogeneous paint 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.
Die weiter beabstandeten Sprühpistolen 21 weisen stark aufgefächerte Sprühstrahlen erzeugende Düsen auf, und dienen vor allem zur Abdeckung der großflächigen Werkstückteile. Die enger zusammenliegenden Sprühpistolenreihen sorgen dagegen mit ihrer geringeren Sprühstrahlauffächerung insbesondere für eine zuverlässige Besprühung von Problemstellen am Werkstück, z.B. Nuten und Abkantungen bzw. schwer zugänglichen Stellen in tiefen Werkstücken.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 closer together rows of spray guns, on the other hand, provide for with their smaller spray jet fanning reliable spraying of problem areas on the workpiece, e.g. grooves and bends or hard-to-reach areas in deep workpieces.
Die Sprühpistolenreihen sind jeweils mittels einer Sprühpistolenhaltevorrichtung 22 beweglich an einem Stativ 23 angeordnet. Die Stative 23 sind weiterhin mit einer Hubein¬ richtung 20 verbunden, die für eine oszillierende Hubbewegung der Stative und damit der Sprühpistolenreihen sorgt. Die os¬ zillierende Bewegung der Sprühvorrichtung 8 gewährleistet für eine gleichmäßige Schichtdickenverteilung des Farbpulvers auf dem Werkstück 18.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.
Die Farbpulverversorgung der Sprühpistolen 21 erfolgt über die Farbpulverzuführung 11 vertikal von oben. Diese Aus¬ gestaltung der Farbpulverzuführung verhindert das Entstehen einer Farbpulversäule in den Sprühpistolen 21 beim Anfahren der Beschichtungskabine, die sich aufgrund des Eigengewichts der Pulverpartikel bei einer Farbpulverzuführung von unten einstellen würde.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.
Längs der Förderstrecke 5 sind Gehängseiwagen 6 angeord- net, die eine Aufhängung 19 zum Befestigen des zu lackieren¬ den Werkstücks 18 aufweisen. Sobald ein Gehängseiwagen 6 mit einem zu lackierenden Werkstück in die sich in Betrieb be¬ findliche Beschichtungskabine einfährt, beginnt die Sprühvor¬ richtung 8 mit dem Sprühbetrieb. Die aus dem Farbpulvervor- ratsbehälter 9 über die Pulverdosiereinrichtung 10 und die PulverZuführung 11 in die Sprühvorrichtung 8 eingespeisten Farbpulverpartikel werden in den Sprühpistolen 21 elektrisch aufgeladen und über die Düsen der Sprühpistolen ausgestoßen. Durch die Anordnung von vertikalen Sprühpistolenreihen bei- derseits der Förderstrecke wird eine stehende Farbpulverwolke am Werkstück erzeugt, was für einen hohen Aufbringwirkungs- grad sorgt. Der Einsatz mehrerer unterschiedlich beanstande¬ ter Sprühpistolenreihen mit verschiedenen Düsensätzen ermög¬ licht weiterhin eine gleichmäßige Beschichtung sowohl groß- flächiger Werkstückteile als auch von Ecken und Kanten. Gemäß einer vorteilhaften Ausführung des Sprühbetriebs wird zuerst mittels der weiter beabstandeten Sprühpistolen¬ reihen, die einen breit aufgefächerten Sprühstrahl erzeugen, eine großflächige Abdeckung des zu lackierenden Werkstücks und anschließend mittels der enger zusammenliegenden Sprühpi¬ stolenreihen mit stärker gerichteten Sprühstrahlen eine Ab¬ deckung von Problemzonen vorgenommen.Hanging egg carriages 6 are arranged along the conveying path 5 and have a suspension 19 for fastening the workpiece 18 to be painted. As soon as a hanger car 6 with a workpiece to be painted enters the coating booth that is in operation, the spray device 8 starts the spraying operation. The paint powder particles fed from the paint 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 high application efficiency. The use of several differently disputed rows of spray guns with different nozzle sets also enables a uniform coating of both large workpiece parts and corners and edges. According to an advantageous embodiment of the spraying operation, first of all the rows of spray guns, which generate a broadly diversified spray jet, are used to cover the workpiece to be painted over a large area and then to cover problem areas by means of the spray gun rows which are more closely together with more directed spray jets .
In dem in Figur 2 gezeigten Ausführungsbeispiel sind die Sprühpistolenreihen mittels den Sprühpistolenhalterungen 22 längs der Stative 23 verschiebbar, um auch breite Werkstücke vollständig beschichten zu können. Das Werkstück wird dabei z.B. mit einer Bandgeschwindigkeit von 6 m/min. an den Sprüh¬ pistolenreihen vorbeigefahren. Es ist jedoch auch möglich, zusätzlich eine Sprühpistolenmitfahreinrichtung, die synchron mit dem Gehängseiwagen mitläuft, vorzusehen. Mit der erfin¬ dungsgemäßen Beschichtungsvorrichtung lassen sich Lackierlei¬ stungen von 800 m2/h erzielen.In the exemplary embodiment shown in FIG. 2, 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. However, it is also possible to additionally provide a spray gun driving device which runs in synchronism with the hanger car. With the coating device according to the invention, coating outputs of 800 m 2 / h can be achieved.
Der Farbpulverüberschuß, der nicht auf dem Werkstück haftet, wird mittels der unterhalb des Werkstücks angeordne- ten AbSaugvorrichtung 12 nach unten abgesaugt. Die sich am Kabinenboden befindende druckluftbetriebene Fluidplatte 24 erzeugt einen schwebenden Farbpulverpartikelstrom in Richtung auf die Öffnung 25 der Absaugvorrichtung 12, über die das Farbpulver zusammen mit der Abluft in die Pulverrückgewin- nungsvorrichtung 13 geführt wird. In der Pulverrückgewin¬ nungsvorrichtung 13 wird das Farbpulver herausgefiltert und in den Farbpulverkreislauf zurückgeführt. Mit der im Ausfüh¬ rungsbeispiel dargestellten Absaugvorrichtung 12 lassen sich Absaugleistungen bis 8.000 m3/h erzeugen. Wenn ein Farbwechsel von einer ersten auf eine zweite Farbe in der Sprühbeschichtungsvorrichtung vorgesehen ist, wird die Farbpulverzufuhr für die Sprühvorrichtung 8 unter¬ brochen. Die PulverZuführung 11 und die Sprühvorrichtung 8 werden dann mittels pulsierender Druckluft von Farbablagerun- gen der ersten Farbe freigeblasen. Anschließend wird die Pul¬ verzuführung 11 von der Pulverdosiervorrichtung 10 für die erste Farbe abgekoppelt und die beiden Kabinenteile der Be- schichtungsvorrichtung werden auseinandergefahren. Dann wird die Sprühvorrichtung längs der Laufschiene in die mit der zweiten Farbe geladene Beschichtungskabine gefahren. Falls ein extremer Farbwechsel z.B. von dunkelbraun auf weiß vorge¬ sehen ist, wird ein zusätzlicher Reinigungsschritt der Sprüh¬ vorrichtung 8 in der an der Laufschiene angeordneten Reini¬ gungseinrichtung 15 ausgeführt.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, through 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. With the suction device 12 shown in the exemplary embodiment, suction powers of up to 8,000 m 3 / h can be generated. If a color change from a first to a second color is provided in the spray coating device, 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. Subsequently, the powder feed 11 from the powder metering device 10 for the The first color is uncoupled and the two 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.
Nachdem die Sprühvorrichtung 8 in die Beschichtungskabi¬ ne für die zweite Farbe eingefahren ist, wird diese geschlos¬ sen und die Pulverzuführung 11 an die Pulverdosiereinrichtung 10 für die zweite Farbe angekoppelt. Der Farbwechselvorgang kann ebenso wie der Sprühvorgang automatisch mittels der Steuervorrichtung 17 gesteuert werden. After the spray device 8 has been moved into 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.

Claims

Patentansprüche claims
1. Vorrichtung zur Sprühbeschichtung von Werkstücken mit Farbe, die wenigstens zwei entlang einer Förderstrecke (5) der Werkstücke angeordnete Beschichtungskabinen (1, 2) auf¬ weist, dadurch gekennzeichnet, daß die Beschichtungskabinen (1, 2) hintereinander an der Förderstrecke (5) angeordnet sind, wobei jede Beschichtungskabine zwei beiderseits der Förderstrecke angeordnete, quer zur Förderrichtung auseinanderfahrbare Kabinenteile aufweist, und eine Sprühvorrichtung (8) so an der Förderstrecke (5) angeordnet ist, daß sie zwischen den Beschichtungskabinen (1, 2) entlang der Förderstrecke versetzbar ist, wenn die Kabi¬ nenteile auseinandergefahren sind.1. Device for spray coating workpieces with paint, which has at least two coating booths (1, 2) arranged along a conveying path (5) of the workpieces, characterized in that the coating booths (1, 2) one behind the other on the conveying path (5) are arranged, each coating booth having two booth parts which are arranged on both sides of the conveyor line and can be moved apart transversely to the conveying direction, and a spray device (8) is arranged on the conveyor line (5) in such a way that it can be displaced along the conveyor line between the coating booths (1, 2) when the cabin parts have moved apart.
2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Sprühvorrichtung (8) längs einer zwischen den Be¬ schichtungskabinen (1, 2) entlang der Förderstrecke (5) ange¬ ordneten Laufschiene (7) verschiebbar ist.2. Device according to claim 1, characterized in that the spray device (8) along one between the Be¬ coating booths (1, 2) along the conveying path (5) ange¬ arranged track (7) is displaceable.
3. Vorrichtung gemäß Anspruch 1 oder 2, dadurch gekenn¬ zeichnet, daß die Innenwände der Beschichtungskabinen (1, 2) zylindrisch ausgebildet sind.3. Device according to claim 1 or 2, characterized gekenn¬ characterized in that the inner walls of the coating booths (1, 2) are cylindrical.
4. Vorrichtung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine Reinigungsvorrichtung (15) für die Sprühvorrichtung (8) zwischen den Beschichtungskabinen (1, 2) angeordnet ist.4. Device according to one of claims 1 to 3, characterized in that a cleaning device (15) for the Spray device (8) between the coating booths (1, 2) is arranged.
5. Vorrichtung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß eine Absaugvorrichtung (12) mittig am Bo¬ den der Beschichtungskabine (1, 2) angeordnet ist, wobei die Sprühbeschichtung mit Farbe in Pulverform erfolgt.5. Device according to one of claims 1 to 4, characterized in that a suction device (12) is arranged centrally on the bottom of the coating booth (1, 2), the spray coating being carried out with paint in powder form.
6. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß der Kabinenboden trichterförmig auf die Absaugvorrichtung6. The device according to claim 5, characterized in that the cabin floor funnel-shaped on the suction device
(12) zuläuft.(12) approaches.
7. Vorrichtung gemäß Anspruch 5 oder 6, dadurch gekenn¬ zeichnet, daß eine belüftete Fluidplatte (24) am Kabinenboden angeordnet ist.7. The device according to claim 5 or 6, characterized gekenn¬ characterized in that a vented fluid plate (24) is arranged on the cabin floor.
8. Vorrichtung gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Sprühvorrichtung (8) wenigstens zwei Reihen vertikal übereinander angeordneter Sprühpistolen (21) aufweist, die in der Beschichtungskabine (1, 2) beiderseits der Förderstrecke (5) der Werkstücke einander gegenüberlie¬ gend angeordnet sind.8. Device according to one of claims 1 to 7, characterized in that the spray device (8) has at least two rows of vertically superposed spray guns (21) in the coating booth (1, 2) on both sides of the conveying path (5) of the workpieces each other are arranged opposite one another.
9. Vorrichtung gemäß Anspruch 8, dadurch gekennzeichnet, daß die Sprühvorrichtung (8) zwei weitere Reihen vertikal übereinander angeordneter Sprühpistolen (21) aufweist, die in der Beschichtungskabine (1, 2) beiderseits der Förderstrecke (3) der Werkstücke einander gegenüberliegend in einem größe¬ ren Abstand als die übrigen Reihen mit Sprühpistolen angeord¬ net sind. '9. The device according to claim 8, characterized in that the spray device (8) has two further rows of vertically superposed spray guns (21) in the coating booth (1, 2) on both sides of the conveyor line (3) the workpieces are arranged opposite one another at a greater distance than the other rows with spray guns. '
10. Vorrichtung gemäß Anspruch 8 oder 9, dadurch gekenn¬ zeichnet, daß die Sprühvorriehtung (8) mit einer Hubeinrich¬ tung (12) verbunden ist.10. The device according to claim 8 or 9, characterized gekenn¬ characterized in that the spray device (8) with a Hubeinrich¬ device (12) is connected.
11. Vorrichtung gemäß einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß die Leitungen der FarbpulverZuführung (11) zur Versorgung der Sprühpistolen mit Farbpulver von oben an die Sprühpistolen herangeführt sind. 11. The device according to one of claims 8 to 10, characterized in that the lines of the paint powder feed (11) for supplying the spray guns with paint powder are brought up from above to the spray guns.
EP96917347A 1995-06-27 1996-06-14 Workpiece spray-painting device Expired - Lifetime EP0777534B1 (en)

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 (en) 1995-06-27 1995-06-27 Device for spray coating workpieces with paint
DE19523319 1995-06-27
PCT/DE1996/001055 WO1997001395A1 (en) 1995-06-27 1996-06-14 Workpiece spray-painting device

Publications (2)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96917347A Expired - Lifetime EP0777534B1 (en) 1995-06-27 1996-06-14 Workpiece spray-painting device

Country Status (24)

Country Link
US (1) US5861062A (en)
EP (1) EP0777534B1 (en)
JP (1) JP3238413B2 (en)
KR (1) KR100361416B1 (en)
AR (1) AR002595A1 (en)
AT (1) ATE173656T1 (en)
AU (1) AU695037B2 (en)
BR (1) BR9606499A (en)
CA (1) CA2198454A1 (en)
CZ (1) CZ286956B6 (en)
DE (2) DE19523319A1 (en)
DK (1) DK0777534T3 (en)
ES (1) ES2125728T3 (en)
HU (1) HU220812B1 (en)
MX (1) MX9701326A (en)
NO (1) NO970765D0 (en)
PL (1) PL184564B1 (en)
RO (1) RO119348B1 (en)
RU (1) RU2146564C1 (en)
SI (1) SI0777534T1 (en)
SK (1) SK281555B6 (en)
TR (1) TR199700120T1 (en)
WO (1) WO1997001395A1 (en)
ZA (1) ZA965415B (en)

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* Cited by examiner, † Cited by third party
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DE19616220A1 (en) * 1996-04-23 1997-10-30 Erich Kraemer Powder coating booth
DE19722773C1 (en) * 1997-06-02 1998-11-19 Manfred Goettling Booth for powder coating
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 (en) * 2003-04-11 2003-06-18 Wagner Ag Altstaetten J Device for cleaning a powder coating booth and powder coating booth with cleaning device
JP4585451B2 (en) * 2003-11-20 2010-11-24 日本パーカライジング株式会社 Powder coating system
DE102008004960A1 (en) * 2008-01-18 2009-07-23 Thermotec Gmbh Highly perforated workpiece coating method for e.g. wire product in cabin, involves performing coating process after closing cabin openings with exception of closely limited supply air opening
DE102010032143A1 (en) * 2010-07-24 2012-01-26 Eisenmann Ag Plant for surface treatment of objects
EP2641665A1 (en) * 2012-03-19 2013-09-25 Deceuninck NV Multi-step process for fully coloured construction elements
CN103801488B (en) * 2014-02-17 2017-02-01 中山市君禾机电设备有限公司 Vertical circular spraying chamber applied to powder spray-coating line
CN109876959A (en) * 2019-02-25 2019-06-14 ***日国际有限公司 A kind of spray-painting production line
DE102022110006A1 (en) 2022-04-26 2023-10-26 Meeh Pulverbeschichtungs- und Staubfilteranlagen GmbH Spray system

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DE9017994U1 (en) * 1990-03-13 1993-07-29 Gronbach, Wilfried, 83512 Wasserburg Powder coating system
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Also Published As

Publication number Publication date
AU5996396A (en) 1997-01-30
JPH10507685A (en) 1998-07-28
AU695037B2 (en) 1998-08-06
DK0777534T3 (en) 1999-08-09
JP3238413B2 (en) 2001-12-17
DE59600863D1 (en) 1999-01-07
NO970765L (en) 1997-02-19
DE19523319A1 (en) 1997-01-09
ATE173656T1 (en) 1998-12-15
CA2198454A1 (en) 1997-01-16
PL318881A1 (en) 1997-07-07
SK281555B6 (en) 2001-05-10
MX9701326A (en) 1998-02-28
AR002595A1 (en) 1998-03-25
RO119348B1 (en) 2004-08-30
US5861062A (en) 1999-01-19
CZ42697A3 (en) 1997-08-13
HU220812B1 (en) 2002-05-28
KR100361416B1 (en) 2003-02-14
RU2146564C1 (en) 2000-03-20
CZ286956B6 (en) 2000-08-16
WO1997001395A1 (en) 1997-01-16
TR199700120T1 (en) 1997-08-21
NO970765D0 (en) 1997-02-19
SK23097A3 (en) 1997-08-06
ZA965415B (en) 1997-02-11
BR9606499A (en) 1997-12-23
SI0777534T1 (en) 1999-02-28
PL184564B1 (en) 2002-11-29
HUP9702153A2 (en) 1999-05-28
HUP9702153A3 (en) 2000-07-28
ES2125728T3 (en) 1999-03-01
EP0777534B1 (en) 1998-11-25

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