EP1656998B1 - Powder spray booth - Google Patents

Powder spray booth Download PDF

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Publication number
EP1656998B1
EP1656998B1 EP04027001A EP04027001A EP1656998B1 EP 1656998 B1 EP1656998 B1 EP 1656998B1 EP 04027001 A EP04027001 A EP 04027001A EP 04027001 A EP04027001 A EP 04027001A EP 1656998 B1 EP1656998 B1 EP 1656998B1
Authority
EP
European Patent Office
Prior art keywords
flaps
cubicle
powder
spray coating
open position
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.)
Active
Application number
EP04027001A
Other languages
German (de)
French (fr)
Other versions
EP1656998A1 (en
Inventor
Markus Lenherr
Guido Rutz
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.)
Gema Switzerland GmbH
Original Assignee
Gema Switzerland 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 Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Priority to DK04027001T priority Critical patent/DK1656998T3/en
Priority to AT04027001T priority patent/ATE364453T1/en
Priority to EP04027001A priority patent/EP1656998B1/en
Priority to ES04027001T priority patent/ES2287626T3/en
Priority to DE502004004104T priority patent/DE502004004104D1/en
Publication of EP1656998A1 publication Critical patent/EP1656998A1/en
Application granted granted Critical
Publication of EP1656998B1 publication Critical patent/EP1656998B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material
    • 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
    • B05B16/405—Partly or totally cylindrical walls; Round floors

Definitions

  • the invention relates to a powder spray coating booth according to the preamble of claim 1.
  • EP 1 162 002 is a column-shaped, seen in horizontal cross-section circular, Pulversprühbe silkungskabine known, which has on two diametrically opposite sides each an object wall passage for the transport of objects to be coated by the powder spray coating booth.
  • a cabin floor consists of a left lateral floor area seen in the object conveying direction and a right lateral floor area, a suction channel connecting the two floor areas in the cabin transverse direction, which extends parallel to the object conveying direction between the two object passages and is covered by a saddle roof-shaped hood ,
  • the saddle roof-shaped hood consists of two flaps, each about an axis of rotation extending in the longitudinal direction of the flap can be manually or manually pivoted between a closed in the roof ridge line and a position open in the roof ridge line position.
  • the flaps have a small distance from the cabin floor in all positions through which excess powder can fall.
  • the left and right bottom areas are only slightly inclined in the direction of the suction channel, so that falling powder on them can not slip off by gravity, but for slipping the powder in the suction additional compressed air is needed.
  • the suction channel formed in the cabin floor extends downwards from the lowest points of the lateral floor areas. This results in a total height of the powder spray coating booth, which is too high for some customers because they do not have sufficiently high building space and the production of a pit in the building floor for inserting the powder spray coating booth is either not possible or too expensive.
  • the bottom portions laterally adjacent to the exhaust duct can not be made to flow more steeply by gravity for slipping coating powder because the powder spray booth would then reach an even greater overall height.
  • a high cabin substructure which forms the cabin floor and the suction channel, also has the disadvantage that the lower edge of the object wall passages is at a relatively high altitude and thereby also the objects to be coated at a correspondingly high level through the Pulversprühbe Anlagenskabine and through the Building space must be transported in which the powder spray coating booth is used.
  • the design of the cabin floor can not be changed as desired, since to achieve good coating quality and good efficiency (low loss of powder) in the spray area of the powder spray coating booth, no disadvantageous air flows should occur.
  • the coating powder is pneumatically conveyed with compressed air, so that compressed air enters the powder spray coating booth with the coating powder. However, the compressed air must not blow away the coating powder from the object to be coated.
  • the coating powder adheres to the object only slightly, a permanent adhesion is achieved only after the coating process in a baking oven, where the coating powder is melted onto the object.
  • no overpressure may be produced in the powder spray coating booth, since powder particles would otherwise escape from various openings of the booth into the outside environment.
  • the spray devices for spray coating of a plurality of objects with the same type of powder are automatically controlled devices, commonly referred to as automatic guns, which are for example carried by a lifting stand or robot and, depending on the application, are also movable relative to the object to be coated.
  • automatic guns which are for example carried by a lifting stand or robot and, depending on the application, are also movable relative to the object to be coated.
  • handguns manually operated spray devices
  • the Pulversprühbe Anlagenskabine form such that relative to the prior art, the vertical distance between the lower edge of the cabin and lower edge of the objects to be coated is smaller.
  • it should be the height of the Cabin substructure, which contains the cabin floor and the air suction, be made lower.
  • the height of the cabin substructure should be reduced so that when accommodating the powder spray coating booth in normal buildings no pit in the building floor is required more.
  • This object is to be achieved such that the suction of air and powder particles from the powder spray coating booth during the spray coating operation does not affect a high quality coating of the objects and a good powder application efficiency (little excess powder).
  • the invention is achieved by a Pulversprühbe Anlagenskabine comprising at least two flaps, which are arranged between a cabin floor and a spraying area above them and are arranged relative to each other pivotable about a longitudinal flap direction, characterized in that the flaps between a part-open position and a Whole-open position are arranged pivotally about its longitudinal direction, wherein the flaps form both in the part-open position and in the full-open position between itself and between the laterally outermost flaps and their adjacent cabin walls each extending in the longitudinal direction of the valve powder diarrhea gaps, which in the Partial open position is smaller than in the fully open position, but in the partial open position is still at least so large that falling from the spray area by gravity falling powder particles can fall through the powder diarrhea.
  • the invention has the advantage that a homogeneous air extraction from the spray area, in particular the spray area of automatic guns, is achieved. This also achieves a very good powder application efficiency (little excess powder) and a good coating quality.
  • Fig. 1 in horizontal cross-section powder spray coating booth can be seen in horizontal cross-section columnar, z. B. circular or square or rectangular or polygonal cabin.
  • the booth is provided with an object passageway on two opposite sides, and one or more, preferably vertical, slots for inserting one in at least one transverse cabin wall or more automatic pistols is formed in the cabin or are.
  • the powder spray coating booth may also be a booth for manually coating objects, in which case it is open on at least one side or has a large opening, so that a person with a manually held hand gun can coat objects in the booth and thereby through the open cabin side through the object to be coated can observe.
  • the Powder spray coating booth be a combination in which objects can be coated with both automatic pistols and manual pistols.
  • the term cabin longitudinal direction respectively designates the direction in which objects to be coated can be conveyed from one object passage to the other object passage through the cabin, this longitudinal direction being transverse to the direction in which coating powders are produced by means of automatic pistols or hand guns is sprayable on the object to be coated.
  • the powder spray coating booth illustrated in FIG. 1 includes at least two, in the illustrated preferred embodiment, three flaps 2 disposed between the surface 4 of a cabin floor 6 and an object coating spray area 8 above the cabin floor.
  • the spray area 8 is the area in which objects 10 can be coated by means of one or more automatic guns 12 with coating powder 14, which is pneumatically conveyed.
  • the spray area 8 thus extends over the entire cabin width and in the cabin longitudinal direction between two oppositely arranged object passages 16 and 18 as far as coating powder 14 can be sprayed by the automatic guns 12 and excess powder (over-spray powder) fall onto the cabin floor 6 can.
  • the arrangement of two or more flaps 2 preferably extends over at least 50%, preferably at least 75% to 100% of the inner cabin cross section in the spray area 8.
  • the flaps 2 are preferably distributed over the entire cabin floor 6, at least as far as the Spray area 8 extends.
  • a suction channel 20 is formed, which is bounded above by the flaps 2, below by the cabin floor 6 and laterally by oblique wall parts 22 and 24 of a cabin substructure 23.
  • the wall parts 22 and 24 of the suction channel 20 have a slope of at least 45 ° or more relative to a horizontal and are preferably vertical, so that falling on them excess powder by gravity on the cabin floor. 6 can slip.
  • the wall parts 22 and 24 preferably have a smooth surface. The great steepness of the wall parts 22 and 24, which are lower continuations of the cabin wall surfaces in the spray area 8, makes it possible to distribute the flaps 2 over almost the entire cabin cross-section.
  • At least one suction opening 26 is provided in a wall portion 25 of the suction channel 20 at a location lower than the flap 2 for sucking air and excess powder from the suction passage 20.
  • the suction opening 26 is preferably formed in a wall portion 25 which is transverse to the longitudinal direction of Flaps 2 extends, as shown in FIG. 2.
  • the flaps 2 are shown between a partial open position, which is shown in solid lines in FIGS. 1 and 2, and a full-open position, which is shown in phantom lines 2-2 for the flap 2 shown on the left in FIG. 1, pivotally arranged about its longitudinal direction.
  • the pivoting of the flaps 2 can take place around a pivot axis 36 extending in the longitudinal direction of the flap or, according to another embodiment, around an arcuate pivoting guide.
  • the flap longitudinal direction of the flaps 2 is preferably parallel to the cabin longitudinal direction and thus also to the transport direction of the objects 10. This is the preferred embodiment of the invention shown in the figures. According to another embodiment of the invention, the longitudinal direction of the flaps 2 can also be transverse to the cabin longitudinal direction.
  • the flaps 2 form between each other and between the wall parts 22 and 24, which laterally opposite the laterally side flaps 2, each having a powder diarrhea gap 28 and 30, and 32, the powder diarrhea columns 28, 30 and 32 have in the partial open position, which is shown in solid lines, a small width, and in the in the fully open position, which is shown in Fig. 1 in dotted lines 2-2 with respect to the flap 2 shown on the left, a large width.
  • the Pulver gutfallspalten 28, 30 and 32 are present in each rotational position of the flaps 2 and extend over the whole Flap length, however, their gap width is dependent on the rotational position of the caps 2.
  • the flaps 2 may be formed to form longitudinally constant width or conical powder diagonal gaps 28, 30 and 32.
  • the flaps 2 preferably have the rotational position shown in Fig. 1, in which the powder diarrhea gaps 28, 30 and 32 are smallest. This results in a small, quiet, homogeneous flow in the spray area 8 during the spray coating operation, but a rapid flow of air around the flaps 2, so that this rapid flow of air entrains powder particles from the flaps 2 and from their laterally adjacent wall portions 22 and 24 in the Suction channel 26 into and to the suction opening 26th
  • the flaps 2 have a width A, which is many times greater than their thickness B.
  • the flaps 2 are formed double-wing-like according to FIG. 1, each with two identical wing halves on both sides of its pivot axis 36.
  • the wing halves run, starting from the pivot axis 36, becoming thinner towards its lateral ends, wedge-shaped. This results in more favorable flow conditions in the cabin and a lower liability of the powder particles on the flaps 2.
  • the flaps 2 are in the partial open position, which is shown in Fig.
  • the flaps 2 are in the fully open position preferably in a rotational position in which their flap width is vertically aligned, corresponding to the dash-dotted lines 2-2 of the left flap 2 of Fig. 1. These are the maximum positions for the partial open position and the whole -Offengnagnagna. However, it will be appreciated that the partial open position and / or the full open position may also be formed by intermediate positions between the positions shown. Furthermore, a height-offset arrangement of the flaps 2 is possible. In all embodiments, the gap width of the powder diarrhea gaps 28, 30 and 32 in the partial open position is smaller than in the fully open position. But it is important that the powder diarrhea gaps 28, 30 and 32 are open even in the partial open position of the flaps 2, preferably at least one Centimeters, so that even during the spray coating operation powder particles can fall through gravity.
  • the flaps 2 are normally in the partial open position during the spray coating operation. However, it is possible, during the spray coating operation, to turn all or preferably only one or a few flaps 2 one after the other into the fully open position and then back again into the partially open position so that excess powder deposited thereon can slip by gravity into the suction channel 26.
  • the turning of only one or a few flaps 2 in succession, instead of all flaps 2 at the same time, has the advantage that in the spraying area 8 no air flow which disadvantages the coating quality and the coating efficiency is produced. While cleaning the cabin interior, z. B. by blowing off with compressed air, all flaps 2 are preferably in the fully open position.
  • the rotation of the flaps 2 can be manually by a crank, which is coupled to one end of the flaps 2, or by a motor drive, for.
  • a crank which is coupled to one end of the flaps 2, or by a motor drive, for.
  • Example, an electric, pneumatic or hydraulic drive 40 which is shown schematically in Fig. 2 and is drivingly connected to a front end of the flaps 2.
  • the drive 40 may be designed for single drive each of a flap 2 or for the common drive of individual or all flaps 2.
  • the figures show a cabin superstructure 42 on the substructure 23.
  • one of the two object passages 16 and 18 is formed on opposing cabin sides for passing objects 10 to be coated through the powder spray coating booth by means of a transport device 44, which is shown in FIG is shown schematically.
  • each flap 2 seen from above is smaller in the partial open position (solid lines of Fig. 1) than in the fully open position (dot-dash lines 2-2 of Fig. 1).
  • the width A of the flaps 2 is preferably between 100 mm and 800 mm, z. B. between 260 mm and 660 mm, more preferably between 360 mm and 560 mm, z. At about 460 mm.
  • the largest thickness B of each flap 2 is preferably at its pivot axis 36 and is preferably as small as possible with respect to stability.
  • the thickness B is z. B. between 10 mm and 100 mm.
  • the powder diarrhea gaps 32 between the flaps 2 have in their partial open position a width C of z. B. 50 mm. It can also be larger or smaller, z. B. at least 10 mm, and is preferably in the range between 10 mm and 100 mm, preferably in the range between 20 mm and 80 mm, or more preferably between 40 mm and 60 mm, z. B. in the mentioned 50 mm.
  • the gap width of the powder diarrhea gaps 28 and 30 between the laterally outer flaps 2 and the adjacent wall portions 22 and 24 preferably has a similar size range in the partial open position of the flaps 2. It may be smaller than the powder diagonal gaps 32 between the flaps 2 within the stated size range in the part-open position, according to other embodiment, but also larger than this.
  • the clear width of the powder diarrhea gaps 28, 30 and 32 between the flaps 2, and between the flaps 2 and the adjacent wall portions 22 and 24, in the fully open position depends on the thickness B of the flaps and the radial distance of the pivot axes 36 of the flaps 2 from each other.
  • the width of the powder diagonal gaps 28, 30 and 32, when all the flaps are in the fully open position preferably in the range between 100 mm and 800 mm, more preferably between 260 mm and 660 mm, preferably in the range between 360 mm and 560 mm, z. At about 460 mm.
  • the height dimension of the objects 10 to be coated can be at most as large as the clear height E of the object passages 16 and 18.
  • the lower edge 44 of the objects 10 may reach at most to the lower edge 46 of the object passages 16 and 18.
  • the superstructure 42 is at a very low height G of z. B. only 600 mm on the substructure 23 can be placed.
  • the clear height between the bottom surface 4 of the cabin floor 6 and the horizontally oriented in the fully open position flaps 2 is dependent on the width A and the thickness B of the flaps. 2
  • the object passages 16 and 18 are formed in opposite cabin walls 50 and 52, respectively. These are in round cabins wall sections, in square or long cabins are cabin front walls. In at least one of two cabin sidewalls 54 and 56 extending transversely to the cabin walls 50 and 52, at least one, for example three, gun slot opening 60 is formed for introducing an automatic gun 12 from outside the powder spraycoating booth into the spray area 8, the slot width of each of which approximates an automatic gun.
  • the automatic gun 12 is carried by a support 62, such as a lift stand or a robot.
  • the gun slot openings 60 extend over a height which permits coating of objects 10 over their entire object height, and thus approximately at a height corresponding to the height E of the object passages.
  • the flaps 2 may extend within the cabin from one object passage 16 to the other object passage 18.
  • the coating area 8 and thus also the area over which the flaps 2 extend in the cabin longitudinal direction and in the cabin transverse direction in the horizontal direction can be limited to a partial length of the cabin if another part of the cabin serves another purpose, for example for an additional one Spray zone 8 for spray coating with automatic guns 12 or according to FIG. 2 for spray coating with a hand gun 72.
  • a longitudinal section 74 of the cabin can be formed as a manual coating station 70 with a hand gun spray area 78.
  • At least one of the two sidewalls 54 and / or 56 of the cabin has a manual coating opening 80 through which a person can direct the handgun 72 to an object 10 to be coated while simultaneously observing the spray jet and the object 10 to be coated.
  • the manual coating station 70 has a cabin floor 82 with a bottom surface 84 below the handgun spray area 78.
  • This bottom surface 84 is preferably at least equal to or higher than the top of the doors 2 in the partially open position and the fully open position, so that this ground surface 84 can be blown by gravity compressed excess powder by means of compressed air of a compressed air hose or other compressed air source in the direction of the cabin area, which has the flaps 2, so that the excess powder then through the powder diarrhea gaps 28, 30, 32 in the suction channel 20 of the automatic pistol Spray zone 8 can fall by gravity.
  • a false floor as cabin floor 82 of the manual coating station 70, which is higher than the cabin floor 6 of the automatic spray gun area 8, has the advantage that under the false floor a storage space 86 is formed, in which the drive 40 for the flaps 2 can be accommodated.
  • the cabin floor 6 of the automatic gun spray area 8 itself forms the suction channel 20, without requiring an additional recess in the cabin floor 6 is required.
  • the suction opening 26 preferably extends over the entire width of the cabin floor 6, which is substantially planar.
  • the height I z. B. rectangular suction opening 26 may extend from the surface 4 of the cabin floor 6 to near the lower edge of the flaps 2, when the flaps 2 are in a horizontal position, as shown in FIG. 1. However, the height I may also be lower, to thereby generate an air acceleration, which helps to avoid powder deposits in the suction channel 20.
  • a transition channel 88 is connected to a round in cross-suction line 90.
  • the manual coating station 70 is not located inside but outside the powder spray coating booth adjacent to one of the object passages 16 or 18; or one such hand coating station 70 at each end of the automatic gun spray area 8, either inside or outside the powder spray booth.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Fertilizers (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The booth has powder flopping columns (28,30,32) provided in the cabin walls (22,24). Flaps (2) are arranged between a cabin base (6) and a spraying area (8), in a longitudinal direction. The flaps are larger in the partial open position and are smaller in the complete open position. The powder particles fall downward from the powder flopping column, by the force of gravity, in the partial open position.

Description

Die Erfindung betrifft eine Pulversprühbeschichtungskabine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a powder spray coating booth according to the preamble of claim 1.

Aus der EP 1 162 002 ist eine säulenförmige, im Horizontalquerschnitt gesehen kreisrunde, Pulversprühbeschichtungskabine bekannt, welche auf zwei einander diametral gegenüberliegenden Seiten je einen Objekt-Wanddurchgang für den Transport von zu beschichtenden Objekten durch die Pulversprühbeschichtungskabine aufweist. Ein Kabinenboden besteht aus einem in Objekt-Förderrichtung gesehen linken seitlichen Bodenbereich und einem rechten seitlichen Bodenbereich, einem die beiden Bodenbereiche in Kabinenquerrichtung miteinander verbindenden Absaugkanal, welcher sich parallel zur Objekt-Förderrichtung zwischen den beiden Objekt-Durchgängen erstreckt und durch eine satteldachförmige Haube abgedeckt ist. Die satteldachförmige Haube besteht aus zwei Klappen, die je um eine sich in Klappenslängsrichtung erstreckende Drehachse manuell oder motorisch zwischen einer in der Dachfirstlinie geschlossenen und einer in der Dachfirstlinie offenen Stellung schwenkbar sind. Die Klappen haben von dem Kabinenboden in allen Stellungen einen kleinen Abstand, durch welchen Überschußpulver hindurchfallen kann. Die linken und rechten Bodenbereichen sind nur leicht in Richtung zum Absaugkanal hin geneigt, so daß auf sie fallendes Überschußpulver nicht durch Schwerkraft abrutschen kann, sondern zum Abrutschen des Pulvers in den Absaugkanal zusätzlich Druckluft benötigt wird. Der im Kabinenboden gebildete Absaugkanal erstreckt sich von den tiefsten Stellen der seitlichen Bodenbereiche nach unten. Dadurch ergibt sich eine Gesamthöhe der Pulversprühbeschichtungskabine, welche für manche Kunden zu hoch ist, da sie nicht ausreichend hohe Gebäuderäume haben und die Herstellung einer Grube im Gebäudeboden zum Einsetzen der Pulversprühbeschichtungskabine entweder nicht möglich oder zu teuer ist. Aus dem gleichen Grund können auch die an den Absaugkanal seitlich angrenzenden Bodenbereiche nicht mit einer größeren Steilheit zum Abrutschen von Beschichtungspulver durch Schwerkraft ausgeführt werden, weil dann die Pulversprühbeschichtungskabine eine noch größere Gesamthöhe erreichen würde. Ein hoher Kabinen-Unterbau, welcher den Kabinenboden und den Absaugkanal bildet, hat außerdem den Nachteil, daß die Unterkante der Objekt-Wanddurchgänge auf einer relativ großen Höhe liegt und dadurch auch die zu beschichtenden Objekte auf einer entsprechend großen Höhe durch die Pulversprühbeschichtungskabine und durch den Gebäuderaum transportiert werden müssen, in welchem die Pulversprühbeschichtungskabine benutzt wird. Die Gestaltung des Kabinenbodens ist nicht beliebig veränderbar, da zur Erzielung einer guten Beschichtungsqualität und eines guten Wirkungsgrades (wenig Pulververlust) im Sprühbereich der Pulversprühbeschichtungskabine keine nachteiligen Luftströmungen entstehen sollten. Das Beschichtungspulver wird pneumatisch mit Druckluft gefördert, so daß mit dem Beschichtungspulver auch Druckluft in die Pulversprühbeschichtungskabine gelangt. Die Druckluft darf jedoch das Beschichtungspulver nicht von dem zu beschichtenden Objekt wegblasen. Das Beschichtungspulver haftet an dem Objekt nur leicht, eine dauerhafte Haftung wird erst nach dem Beschichtungsvorgang in einem Einbrennofen erzielt, wo das Beschichtungspulver auf das Objekt aufgeschmolzen wird. In der Pulversprühbeschichtungskabine darf jedoch auch kein Überdruck entstehen, da sonst Pulverpartikel aus verschiedenen Öffnungen der Kabine in die Außenumgebung austreten würden. Außerdem besteht bei einigen Pulvern die Gefahr, daß bei hoher Pulverkonzentration eine Selbstentzündung und damit Explosion entstehen kann. Aus diesem Grunde wird durch den genannten Absaugkanal während des Sprühbeschichtungsbetriebes konstant Luft und Überschußpulver abgesaugt, welches an dem zu beschichtenden Objekt vorbeigesprüht wird oder von dem Objekt abprallt. Zum Reinigen des Innenraumes der Pulversprühbeschichtungskabine, was bei jedem Wechsel von einer Pulversorte auf eine andere Pulversorte erforderlich ist, ist es üblich, alle Kabineninnenflächen mit Druckluft abzublasen und die Druckluft zusammen mit dem abgeblasenen Überschußpulver auf dem gleichen Weg wie während des Sprühbeschichtungsvorganges durch den Absaugkanal abzusaugen. Das während des Sprühbeschichtungsbetriebes abgesaugte Überschußpulver wird üblicherweise vom Luftstrom getrennt, z. B. durch einen Zyklon, und wieder verwendet. Das während eines Reinigungsvorganges abgesaugte Pulver ist häufig nicht mehr verwendbar.From the EP 1 162 002 is a column-shaped, seen in horizontal cross-section circular, Pulversprühbeschichtungskabine known, which has on two diametrically opposite sides each an object wall passage for the transport of objects to be coated by the powder spray coating booth. A cabin floor consists of a left lateral floor area seen in the object conveying direction and a right lateral floor area, a suction channel connecting the two floor areas in the cabin transverse direction, which extends parallel to the object conveying direction between the two object passages and is covered by a saddle roof-shaped hood , The saddle roof-shaped hood consists of two flaps, each about an axis of rotation extending in the longitudinal direction of the flap can be manually or manually pivoted between a closed in the roof ridge line and a position open in the roof ridge line position. The flaps have a small distance from the cabin floor in all positions through which excess powder can fall. The left and right bottom areas are only slightly inclined in the direction of the suction channel, so that falling powder on them can not slip off by gravity, but for slipping the powder in the suction additional compressed air is needed. The suction channel formed in the cabin floor extends downwards from the lowest points of the lateral floor areas. This results in a total height of the powder spray coating booth, which is too high for some customers because they do not have sufficiently high building space and the production of a pit in the building floor for inserting the powder spray coating booth is either not possible or too expensive. By the same token, the bottom portions laterally adjacent to the exhaust duct can not be made to flow more steeply by gravity for slipping coating powder because the powder spray booth would then reach an even greater overall height. A high cabin substructure, which forms the cabin floor and the suction channel, also has the disadvantage that the lower edge of the object wall passages is at a relatively high altitude and thereby also the objects to be coated at a correspondingly high level through the Pulversprühbeschichtungskabine and through the Building space must be transported in which the powder spray coating booth is used. The design of the cabin floor can not be changed as desired, since to achieve good coating quality and good efficiency (low loss of powder) in the spray area of the powder spray coating booth, no disadvantageous air flows should occur. The coating powder is pneumatically conveyed with compressed air, so that compressed air enters the powder spray coating booth with the coating powder. However, the compressed air must not blow away the coating powder from the object to be coated. The coating powder adheres to the object only slightly, a permanent adhesion is achieved only after the coating process in a baking oven, where the coating powder is melted onto the object. In the However, no overpressure may be produced in the powder spray coating booth, since powder particles would otherwise escape from various openings of the booth into the outside environment. In addition, there is the danger with some powders that at high powder concentration, self-ignition and thus explosion can occur. For this reason, constantly suctioned air and excess powder through the said suction during the spray coating operation, which is sprayed past the object to be coated or rebounds from the object. To clean the interior of the powder spray coating booth, which is required whenever changing from one type of powder to another type of powder, it is common to blow off all cabin interior surfaces with compressed air and to suck the compressed air along with the blown excess powder through the suction channel in the same way as during the spray coating operation , The extracted during the spray coating operation excess powder is usually separated from the air stream, z. B. by a cyclone, and used again. The extracted during a cleaning process powder is often unusable.

Die Sprühvorrichtungen zum Sprühbeschichten von einer Vielzahl von Objekten mit der gleichen Pulversorte sind automatisch gesteuerte Vorrichtungen, üblicherweise als Automatikpistolen bezeichnet, welche beispielsweise von einem Hubständer oder Roboter getragen werden und je nach Anwendungsfall auch relativ zu dem zu beschichtenden Objekt bewegbar sind. Zum Vorbeschichten oder Nachbeschichten oder zum Beschichten von einzelnen Objekten ist es außerdem üblich, von Hand gehaltene, manuell betätigte Sprühvorrichtungen zu verwenden, welche üblicherweise auch als Handpistolen oder manuellen Sprühpistolen bezeichnet werden.The spray devices for spray coating of a plurality of objects with the same type of powder are automatically controlled devices, commonly referred to as automatic guns, which are for example carried by a lifting stand or robot and, depending on the application, are also movable relative to the object to be coated. For precoating or recoating, or for coating individual objects, it is also common to use hand-held, manually operated spray devices, commonly referred to as handguns or manual sprayguns.

Durch die Erfindung soll die Aufgabe gelöst werden, die Pulversprühbeschichtungskabine derart auszubilden, daß relativ zum Stand der Technik der vertikale Abstand zwischen Kabinenunterkante und Unterkante der zu beschichtenden Objekte kleiner ist. Mit anderen Worten, es soll die Höhe des Kabinenunterbaus, welcher den Kabinenboden und dessen Luftabsaugeinrichtung enthält, niedriger gestaltet werden. Die Höhe des Kabinenunterbaus soll derart reduziert werden, daß bei Unterbringung der Pulversprühbeschichtungskabine in normalen Gebäuden keine Grube im Gebäudeboden mehr erforderlich wird. Diese Aufgabe soll derart gelöst werden, daß das Absaugen von Luft und Pulverpartikeln aus der Pulversprühbeschichtungskabine während des Sprühbeschichtungsbetriebes eine qualitativ hochwertige Beschichtung der Objekte und einen gutem Pulverauftrags-Wirkungsgrad (wenig Überschußpulver) nicht beeinträchtigt.By the invention, the problem to be solved, the Pulversprühbeschichtungskabine form such that relative to the prior art, the vertical distance between the lower edge of the cabin and lower edge of the objects to be coated is smaller. In other words, it should be the height of the Cabin substructure, which contains the cabin floor and the air suction, be made lower. The height of the cabin substructure should be reduced so that when accommodating the powder spray coating booth in normal buildings no pit in the building floor is required more. This object is to be achieved such that the suction of air and powder particles from the powder spray coating booth during the spray coating operation does not affect a high quality coating of the objects and a good powder application efficiency (little excess powder).

Diese Aufgabe wird gemäß der Erfindung durch Anspruch 1 gelöst. Demgemäß wird die Erfindung gelöst durch eine Pulversprühbeschichtungskabine, enthaltend mindestens zwei Klappen, welche zwischen einem Kabinenboden und einem über ihnen gelegenen Sprühbereich angeordnet sind und relativ zueinander je um eine Klappenlängsrichtung schwenkbar angeordnet sind, dadurch gekennzeichnet, daß die Klappen zwischen einer Teil-Offenstellung und einer Ganz-Offenstellung um ihre Längsrichtung schwenkbar angeordnet sind, wobei die Klappen sowohl in der Teil-Offenstellung als auch in der Ganz-Offenstellung zwischen sich und zwischen den seitlich äußersten Klappen und ihnen benachbarten Kabinenwänden je eine sich in Klappenlängsrichtung erstreckenden Pulverdurchfallspalte bilden, welche in der Teil-Offenstellung kleiner ist als in der Ganz-Offenstellung, jedoch in der Teil-Offenstellung noch mindestens so groß ist, daß aus dem Sprühbereich durch Schwerkraft nach unten fallende Pulverpartikel durch die Pulverdurchfallspalte hindurchfallen können.This object is achieved according to the invention by claim 1. Accordingly, the invention is achieved by a Pulversprühbeschichtungskabine comprising at least two flaps, which are arranged between a cabin floor and a spraying area above them and are arranged relative to each other pivotable about a longitudinal flap direction, characterized in that the flaps between a part-open position and a Whole-open position are arranged pivotally about its longitudinal direction, wherein the flaps form both in the part-open position and in the full-open position between itself and between the laterally outermost flaps and their adjacent cabin walls each extending in the longitudinal direction of the valve powder diarrhea gaps, which in the Partial open position is smaller than in the fully open position, but in the partial open position is still at least so large that falling from the spray area by gravity falling powder particles can fall through the powder diarrhea.

Die Vorteile der Erfindung sind insbesondere:The advantages of the invention are in particular:

Eine sehr niedrige Höhe des Kabinenunterbaus und damit auch der Gesamthöhe und damit auch ein sehr kleiner Abstand von der Kabinenunterkante bis zur Unterkante der zu beschichtenden Objekte. Dadurch wird es normalerweise nicht mehr erforderlich, beim Kunden in der Fabrikhalle, in welcher die Pulversprühbeschichtungskabine aufgestellt werden soll, eine Grube zum Versenken des Kabinenunterbaus herzustellen. Außerdem hat die Erfindung den Vorteil, daß eine homogene Luftabsaugung aus dem Sprühbereich, insbesondere dem Sprühbereich von Automatikpistolen, erzielt wird. Dadurch wird auch ein sehr guter Pulverauftrags-Wirkungsgrad (wenig Überschußpulver) und eine gute Beschichtungsqualität erzielt.A very low height of the cabin substructure and thus also the overall height and thus also a very small distance from the lower edge of the cabin to the lower edge of the objects to be coated. As a result, it is normally no longer necessary to make a pit for sinking the cabin base at the customer in the factory floor in which the powder spray coating booth is to be set up. In addition, the invention has the advantage that a homogeneous air extraction from the spray area, in particular the spray area of automatic guns, is achieved. This also achieves a very good powder application efficiency (little excess powder) and a good coating quality.

Weitere Merkmale der Erfindung sind in den Unteransprüchen enthalten.Further features of the invention are contained in the subclaims.

Die Erfindung wird im Folgenden mit Bezug auf die Zeichnungen anhand einer bevorzugten Ausführungsform als Beispiel beschrieben. In den Zeichnungen zeigen

Fig. 1
schematisch einen Vertikal-Querschnitt durch eine längliche Pulversprühbeschichtungskabine nach der Erfindung,
Fig. 2
schematisch einen Längsschnitt durch eine Pulversprühbeschichtungskabine nach der Erfindung, welche die Merkmale von Fig. 1 und zusätzliche Merkmale enthält.
The invention will now be described by way of example with reference to the drawings of a preferred embodiment. In the drawings show
Fig. 1
schematically a vertical cross-section through an elongated powder spray coating booth according to the invention,
Fig. 2
schematically a longitudinal section through a powder spray coating booth according to the invention, which contains the features of Fig. 1 and additional features.

Die in Fig. 1 im Horizontal-Querschnitt dargestellte Pulversprühbeschichtungskabine nach der Erfindung kann eine im Horizontal-Querschnitt gesehen säulenförmige, z. B. kreisrunde oder quadratische oder rechteckige oder vieleckige Kabine sein. Vorzugsweise ist es eine Kabine zum automatischen Sprühbeschichten von Objekten mit Beschichtungspulver, in welchem Falle die Kabine an zwei einander gegenüberliegenden Seiten je mit einem Objekt-Durchgang versehen ist und in mindestens einer quer dazu verlaufenden Kabinenwand ein oder mehrere, vorzugsweise vertikale, Schlitze zum Einführen einer oder mehrerer Automatikpistolen in die Kabine gebildet ist bzw. sind. Gemäß anderer Ausführungsform kann die Pulversprühbeschichtungskabine jedoch auch eine Kabine zum manuellen Beschichten von Objekten sein, in welchem Falle sie auf mindestens einer Seite offen ist oder eine große Öffnung hat, so daß eine Person mit einer manuell gehaltenen Handpistole Objekte in der Kabine beschichten kann und dabei durch die offene Kabinenseite hindurch das zu beschichtende Objekt beobachten kann. Gemäß einer nochmals weiteren Ausführungsform kann die Pulversprühbeschichtungskabine eine Kombination sein, in welcher sowohl mit Automatikpistolen als auch mittels Handpistolen Objekte beschichtbar sind. Im Folgenden wird mit dem Ausdruck Kabinenlängsrichtung jeweils die Richtung bezeichnet, in welcher zu beschichtende Objekte von einem Objekt-Durchgang zum anderen Objekt-Durchgang durch die Kabine hindurch förderbar sind, wobei diese Längsrichtung quer zu der Richtung ist, in welcher mittels Automatikpistolen oder Handpistolen Beschichtungspulver auf das zu beschichtende Objekt sprühbar ist.The illustrated in Fig. 1 in horizontal cross-section powder spray coating booth according to the invention can be seen in horizontal cross-section columnar, z. B. circular or square or rectangular or polygonal cabin. Preferably, it is a booth for automatically spray coating objects with coating powder, in which case the booth is provided with an object passageway on two opposite sides, and one or more, preferably vertical, slots for inserting one in at least one transverse cabin wall or more automatic pistols is formed in the cabin or are. However, according to another embodiment, the powder spray coating booth may also be a booth for manually coating objects, in which case it is open on at least one side or has a large opening, so that a person with a manually held hand gun can coat objects in the booth and thereby through the open cabin side through the object to be coated can observe. According to yet another embodiment, the Powder spray coating booth be a combination in which objects can be coated with both automatic pistols and manual pistols. In the following, the term cabin longitudinal direction respectively designates the direction in which objects to be coated can be conveyed from one object passage to the other object passage through the cabin, this longitudinal direction being transverse to the direction in which coating powders are produced by means of automatic pistols or hand guns is sprayable on the object to be coated.

Die in Fig. 1 dargestellte Pulversprühbeschichtungskabine enthält mindesten zwei, bei der dargestellten bevorzugten Ausführungsform drei, Klappen 2, welche zwischen der Oberfläche 4 eines Kabinenbodens 6 und einem über dem Kabinenboden gelegenen Objektbeschichtungs-Sprühbereich 8 angeordnet sind. Der Sprühbereich 8 ist der Bereich, in welchem Objekte 10 mittels einer oder mehrerer Automatikpistolen 12 mit Beschichtungspulver 14 beschichtbar sind, welches pneumatisch gefördert wird. Der Sprühbereich 8 erstreckt sich somit über die gesamte Kabinenbreite und in Kabinenlängsrichtung zwischen zwei einander gegenüberliegend angeordneten Objekt-Durchgängen 16 bzw. 18 so weit, wie Beschichtungspulver 14 von den Automatikpistolen 12 sprühbar ist und Überschußpulver (over-spray powder) auf den Kabinenboden 6 fallen kann. Die Anordnung von zwei oder mehr Klappen 2 erstreckt sich vorzugsweise über mindestens 50 %, vorzugsweise mindestens 75 % bis 100 % des inneren Kabinenquerschnitts im Sprühbereich 8. Die Klappen 2 sind vorzugsweise über den ganzen Kabinenboden 6 verteilt angeordnet, mindestens so weit, wie sich der Sprühbereich 8 erstreckt.The powder spray coating booth illustrated in FIG. 1 includes at least two, in the illustrated preferred embodiment, three flaps 2 disposed between the surface 4 of a cabin floor 6 and an object coating spray area 8 above the cabin floor. The spray area 8 is the area in which objects 10 can be coated by means of one or more automatic guns 12 with coating powder 14, which is pneumatically conveyed. The spray area 8 thus extends over the entire cabin width and in the cabin longitudinal direction between two oppositely arranged object passages 16 and 18 as far as coating powder 14 can be sprayed by the automatic guns 12 and excess powder (over-spray powder) fall onto the cabin floor 6 can. The arrangement of two or more flaps 2 preferably extends over at least 50%, preferably at least 75% to 100% of the inner cabin cross section in the spray area 8. The flaps 2 are preferably distributed over the entire cabin floor 6, at least as far as the Spray area 8 extends.

Unter den Klappen 2 ist ein Absaugkanal 20 gebildet, welcher oben durch die Klappen 2, unten durch den Kabinenboden 6 und seitlich durch schräge Wandteile 22 bzw. 24 eines Kabinen-Unterbaus 23 begrenzt ist.Under the flaps 2 a suction channel 20 is formed, which is bounded above by the flaps 2, below by the cabin floor 6 and laterally by oblique wall parts 22 and 24 of a cabin substructure 23.

Die Wandteile 22 und 24 des Absaugkanals 20 haben relativ zu einer Horizontalen eine Schräge von mindestens 45° oder mehr und sind vorzugsweise vertikal, so daß auf sie abfallendes Überschußpulver durch Schwerkraft auf den Kabinenboden 6 abrutschen kann. Die Wandteile 22 und 24 haben vorzugsweise eine glatte Oberfläche. Die große Steilheit der Wandteile 22 und 24, welche untere Fortsetzungen der Kabinenwandflächen im Sprühbereich 8 sind, ermöglicht es, die Klappen 2 über nahezu den gesamten Kabinenquerschnitt zu verteilen.The wall parts 22 and 24 of the suction channel 20 have a slope of at least 45 ° or more relative to a horizontal and are preferably vertical, so that falling on them excess powder by gravity on the cabin floor. 6 can slip. The wall parts 22 and 24 preferably have a smooth surface. The great steepness of the wall parts 22 and 24, which are lower continuations of the cabin wall surfaces in the spray area 8, makes it possible to distribute the flaps 2 over almost the entire cabin cross-section.

Mindestens eine Absaugöffnung 26 ist in einem Wandteil 25 des Absaugkanals 20 an einer tiefer als die Klappe 2 gelegenen Stelle vorgesehen zum Absaugen von Luft und Überschußpulver aus dem Absaugkanal 20. Die Absaugöffnung 26 ist vorzugsweise in einem Wandteil 25 gebildet, welcher sich quer zur Längsrichtung der Klappen 2 erstreckt, wie dies Fig. 2 zeigt.At least one suction opening 26 is provided in a wall portion 25 of the suction channel 20 at a location lower than the flap 2 for sucking air and excess powder from the suction passage 20. The suction opening 26 is preferably formed in a wall portion 25 which is transverse to the longitudinal direction of Flaps 2 extends, as shown in FIG. 2.

Die Klappen 2 sind zwischen einer Teil-Offenstellung, welche in den Fig. 1 und 2 in ausgezogenen Linien gezeigt ist, und einer Ganz-Offenstellung, welche für die in Fig. 1 links gezeigte Klappe 2 in strichpunktierten Linien 2-2 gezeigt ist, um ihre Längsrichtung schwenkbar angeordnet. Die Schwenkung der Klappen 2 kann um eine in Klappenlängsrichtung verlaufende Schwenkachse 36 oder, gemäß einer anderen Ausführungsform, um eine bogenförmige Schwenkführung erfolgen.The flaps 2 are shown between a partial open position, which is shown in solid lines in FIGS. 1 and 2, and a full-open position, which is shown in phantom lines 2-2 for the flap 2 shown on the left in FIG. 1, pivotally arranged about its longitudinal direction. The pivoting of the flaps 2 can take place around a pivot axis 36 extending in the longitudinal direction of the flap or, according to another embodiment, around an arcuate pivoting guide.

Die Klappenlängsrichtung der Klappen 2 ist vorzugsweise parallel zur Kabinenlängsrichtung und damit auch zur Transportrichtung der Objekte 10. Dies ist die in den Figuren gezeigte bevorzugte Ausführungsform der Erfindung. Gemäß anderer Ausführungsform der Erfindung kann die Längsrichtung der Klappen 2 auch quer zur Kabinenlängsrichtung sein.The flap longitudinal direction of the flaps 2 is preferably parallel to the cabin longitudinal direction and thus also to the transport direction of the objects 10. This is the preferred embodiment of the invention shown in the figures. According to another embodiment of the invention, the longitudinal direction of the flaps 2 can also be transverse to the cabin longitudinal direction.

Die Klappen 2 bilden zwischen sich und zwischen den Wandteilen 22 bzw. 24, welche den seitlich äußeren Klappen 2 seitlich gegenüberliegen, je einen Pulverdurchfallspalt 28 und 30, bzw. 32. Die Pulverdurchfallspalten 28, 30 und 32 haben in der Teil-Offenstellung, welche in Fig. 1 in ausgezogenen Linien gezeigt ist, eine kleine Breite, und in der in der Ganz-Offenstellung, welche in Fig. 1 in strichpunktierten Linien 2-2 bezüglich der links gezeigten Klappe 2 dargestellt ist, eine große Breite. Die Pulverdurchfallspalten 28, 30 und 32 sind in jeder Drehstellung der Klappen 2 vorhanden und erstrecken sich über die ganze Klappenlänge, ihre Spaltbreite ist jedoch abhängig von der Drehstellung der Kappen 2. Die Klappen 2 können zur Bildung von in Längsrichtung konstant breiten oder konischen Pulverdurchfallspalten 28, 30 und 32 ausgebildet sein.The flaps 2 form between each other and between the wall parts 22 and 24, which laterally opposite the laterally side flaps 2, each having a powder diarrhea gap 28 and 30, and 32, the powder diarrhea columns 28, 30 and 32 have in the partial open position, which is shown in solid lines, a small width, and in the in the fully open position, which is shown in Fig. 1 in dotted lines 2-2 with respect to the flap 2 shown on the left, a large width. The Pulverdurchfallspalten 28, 30 and 32 are present in each rotational position of the flaps 2 and extend over the whole Flap length, however, their gap width is dependent on the rotational position of the caps 2. The flaps 2 may be formed to form longitudinally constant width or conical powder diagonal gaps 28, 30 and 32.

Während des Sprühbeschichtungsbetriebes haben die Klappen 2 vorzugsweise die in Fig. 1 gezeigte Drehstellung, bei welcher die Pulverdurchfallspalte 28, 30 und 32 am kleinsten sind. Dadurch ergibt sich während des Sprühbeschichtungsbetriebes eine kleine, ruhige, homogene Strömung im Sprühbereich 8, jedoch eine schnelle Luftströmung um die Klappen 2 herum, so daß diese schnelle Luftströmung Pulverpartikel von den Klappen 2 und von den ihnen seitlich benachbarten Wandteilen 22 und 24 mitreißt in den Absaugkanal 26 hinein und zur Absaugöffnung 26.During the spray coating operation, the flaps 2 preferably have the rotational position shown in Fig. 1, in which the powder diarrhea gaps 28, 30 and 32 are smallest. This results in a small, quiet, homogeneous flow in the spray area 8 during the spray coating operation, but a rapid flow of air around the flaps 2, so that this rapid flow of air entrains powder particles from the flaps 2 and from their laterally adjacent wall portions 22 and 24 in the Suction channel 26 into and to the suction opening 26th

Die Klappen 2 haben eine Breite A, welche ein Vielfaches größer ist als ihre Dicke B. Vorzugsweise sind die Klappen 2 entsprechend Fig. 1 doppelflügelartig ausgebildet, mit je zwei identischen Flügelhälften beidseitig ihrer Schwenkachse 36. Die Flügelhälften laufen, ausgehend von der Schwenkachse 36, zu ihren seitlichen Enden hin dünner werdend, keilförmig aus. Dadurch ergeben sich günstigere Strömungsverhältnisse in der Kabine und eine geringere Haftungsmöglichkeit der Pulverpartikel an den Klappen 2. Die Klappen 2 sind in der Teil-Offenstellung, welche in Fig. 1 gezeigt ist, in einer Drehposition, in welcher sie in Richtung ihrer Klappenbreite miteinander fluchten. Die Klappen 2 sind in der Ganz-Offenstellung vorzugsweise in einer Drehposition, bei welcher ihre Klappenbreite vertikal ausgerichtet ist, entsprechend den strichpunktierten Linien 2-2 der linken Klappe 2 von Fig. 1. Dies sind die Maximalstellungen für die Teil-Offenstellung und die Ganz-Offenstellung. Es ist jedoch ersichtlich, daß die Teil-Offenstellung und/oder die Ganz-Offenstellung auch durch Zwischenstellungen zwischen den gezeigten Stellungen gebildet sein können. Ferner ist auch eine höhenversetzte Anordnung der Klappen 2 möglich. Bei allen Ausführungsformen ist die Spaltbreite der Pulverdurchfallspalte 28, 30 und 32 in der Teil-Offenstellung kleiner als in der Ganz-Offenstellung. Wichtig ist aber, daß die Pulverdurchfallspalte 28, 30 und 32 auch in der Teil-Offenstellung der Klappen 2 offen sind, vorzugsweise mindestens ein Zentimeter, damit auch während des Sprühbeschichtungsbetriebes Pulverpartikel durch Schwerkraft hindurchfallen können.The flaps 2 have a width A, which is many times greater than their thickness B. Preferably, the flaps 2 are formed double-wing-like according to FIG. 1, each with two identical wing halves on both sides of its pivot axis 36. The wing halves run, starting from the pivot axis 36, becoming thinner towards its lateral ends, wedge-shaped. This results in more favorable flow conditions in the cabin and a lower liability of the powder particles on the flaps 2. The flaps 2 are in the partial open position, which is shown in Fig. 1, in a rotational position in which they are aligned with each other in the direction of their flap width , The flaps 2 are in the fully open position preferably in a rotational position in which their flap width is vertically aligned, corresponding to the dash-dotted lines 2-2 of the left flap 2 of Fig. 1. These are the maximum positions for the partial open position and the whole -Offenstellung. However, it will be appreciated that the partial open position and / or the full open position may also be formed by intermediate positions between the positions shown. Furthermore, a height-offset arrangement of the flaps 2 is possible. In all embodiments, the gap width of the powder diarrhea gaps 28, 30 and 32 in the partial open position is smaller than in the fully open position. But it is important that the powder diarrhea gaps 28, 30 and 32 are open even in the partial open position of the flaps 2, preferably at least one Centimeters, so that even during the spray coating operation powder particles can fall through gravity.

Die Klappen 2 befinden sich während des Sprühbeschichtungsbetriebes normalerweise in der Teil-Offenstellung. Es ist jedoch möglich, während des Sprühbeschichtungsbetriebes alle oder vorzugsweise nur eine oder wenige Klappen 2 nacheinander in die Ganz-Offenstellung und dann wieder zurück in die Teil-Offenstellung zu drehen, um auf ihnen abgelagertes Überschußpulver durch Schwerkraft in den Absaugkanal 26 abrutschen zu lassen. Das Drehen von nur einer oder wenigen Klappen 2 nacheinander, anstatt von allen Klappen 2 gleichzeitig, hat den Vorteil, daß im Sprühbereich 8 keine die Beschichtungsqualität und den Beschichtungswirkungsgrad benachteiligende Luftströmung entsteht. Während der Reinigung des Kabineninnenraumes, z. B. durch Abblasen mit Druckluft, sind vorzugsweise alle Klappen 2 in der Ganz-Offenstellung.The flaps 2 are normally in the partial open position during the spray coating operation. However, it is possible, during the spray coating operation, to turn all or preferably only one or a few flaps 2 one after the other into the fully open position and then back again into the partially open position so that excess powder deposited thereon can slip by gravity into the suction channel 26. The turning of only one or a few flaps 2 in succession, instead of all flaps 2 at the same time, has the advantage that in the spraying area 8 no air flow which disadvantages the coating quality and the coating efficiency is produced. While cleaning the cabin interior, z. B. by blowing off with compressed air, all flaps 2 are preferably in the fully open position.

Das Drehen der Klappen 2 kann manuell durch eine Kurbel, welche an ein Ende der Klappen 2 kuppelbar ist, oder durch einen motorischen Antrieb, z. B. einen elektrischen, pneumatischen oder hydraulischen Antrieb 40 erfolgen, welcher in Fig. 2 schematisch dargestellt ist und mit einem stirnseitigen Ende der Klappen 2 antriebsmäßig verbunden ist. Je nach Ausführungsform der Erfindung kann der Antrieb 40 zum Einzelantrieb je einer Klappe 2 oder zum gemeinsamen Antrieb einzelner oder aller Klappen 2 ausgebildet sein.The rotation of the flaps 2 can be manually by a crank, which is coupled to one end of the flaps 2, or by a motor drive, for. Example, an electric, pneumatic or hydraulic drive 40, which is shown schematically in Fig. 2 and is drivingly connected to a front end of the flaps 2. Depending on the embodiment of the invention, the drive 40 may be designed for single drive each of a flap 2 or for the common drive of individual or all flaps 2.

Die Figuren zeigen einen Kabinenoberbau 42 auf dem Unterbau 23. Im Oberbau 42 sind an voneinander entgegengesetzten Kabinenseiten je einer der beiden Objekt-Durchgänge 16 und 18 gebildet zum Hindurchbewegen von zu beschichtenden Objekten 10 durch die Pulversprühbeschichtungskabine mittels einer Transportvorrichtung 44, welche in Fig. 1 schematisch dargestellt ist.The figures show a cabin superstructure 42 on the substructure 23. In the superstructure 42, one of the two object passages 16 and 18 is formed on opposing cabin sides for passing objects 10 to be coated through the powder spray coating booth by means of a transport device 44, which is shown in FIG is shown schematically.

Der von oben sichtbare Querschnitt jeder Klappe 2 ist in der Teil-Offenstellung (ausgezogene Linien von Fig. 1) kleiner als in der Ganz-Offenstellung (strichpunktierte Linien 2-2 von Fig. 1). Die Breite A der Klappen 2 liegt vorzugsweise zwischen 100 mm und 800 mm, z. B. zwischen 260 mm und 660 mm, noch bevorzugter zwischen 360 mm und 560 mm, z. B. bei ungefähr 460 mm. Die größte Dicke B jeder Klappe 2 ist vorzugsweise bei deren Schwenkachse 36 und ist vorzugsweise so klein wie bezüglich Stabilität möglich. Die Dicke B beträgt z. B. zwischen 10 mm und 100 mm.The cross-sectional view of each flap 2 seen from above is smaller in the partial open position (solid lines of Fig. 1) than in the fully open position (dot-dash lines 2-2 of Fig. 1). The width A of the flaps 2 is preferably between 100 mm and 800 mm, z. B. between 260 mm and 660 mm, more preferably between 360 mm and 560 mm, z. At about 460 mm. The largest thickness B of each flap 2 is preferably at its pivot axis 36 and is preferably as small as possible with respect to stability. The thickness B is z. B. between 10 mm and 100 mm.

Die Pulverdurchfallspalte 32 zwischen den Klappen 2 haben in deren Teil-Offenstellung eine Breite C von z. B. 50 mm. Sie kann auch größer oder kleiner sein, z. B. mindestens 10 mm, und liegt vorzugsweise im Bereich zwischen 10 mm und 100 mm, vorzugsweise im Bereich zwischen 20 mm und 80 mm, oder noch bevorzugter zwischen 40 mm und 60 mm, z. B. bei den genannten 50 mm. Die Spaltbreite der Pulverdurchfallspalte 28 und 30 zwischen den seitlich äußeren Klappen 2 und den benachbarten Wandteilen 22 und 24 hat vorzugsweise einen ähnlichen Größenbereich in der Teil-Offenstellung der Klappen 2. Er kann innerhalb des genannten Größenbereiches kleiner sein als die Pulverdurchfallspalte 32 zwischen den Klappen 2 in der Teil-Offenstellung, gemäß anderer Ausführungsform jedoch auch größer als diese.The powder diarrhea gaps 32 between the flaps 2 have in their partial open position a width C of z. B. 50 mm. It can also be larger or smaller, z. B. at least 10 mm, and is preferably in the range between 10 mm and 100 mm, preferably in the range between 20 mm and 80 mm, or more preferably between 40 mm and 60 mm, z. B. in the mentioned 50 mm. The gap width of the powder diarrhea gaps 28 and 30 between the laterally outer flaps 2 and the adjacent wall portions 22 and 24 preferably has a similar size range in the partial open position of the flaps 2. It may be smaller than the powder diagonal gaps 32 between the flaps 2 within the stated size range in the part-open position, according to other embodiment, but also larger than this.

Die lichte Weite der Pulverdurchfallspalte 28, 30 und 32 zwischen den Klappen 2, und zwischen den Klappen 2 und den benachbarten Wandteilen 22 bzw. 24, in der Ganz-Offenstellung ist abhängig von der Dicke B der Klappen und dem Radialabstand der Schwenkachsen 36 der Klappen 2 voneinander. Gemäß den genannten Maßen für die Breite A und die Dicke B der Klappen 2 liegt die Weite der Pulverdurchfallspalten 28, 30 und 32, wenn sich alle Klappen in Ganz-Offenstellung befinden (strichpunktierte Linien 2-2 von Fig. 1), vorzugsweise im Bereich zwischen 100 mm und 800 mm, noch bevorzugter zwischen 260 mm und 660 mm, vorzugsweise im Bereich zwischen 360 mm und 560 mm, z. B. bei ungefähr 460 mm.The clear width of the powder diarrhea gaps 28, 30 and 32 between the flaps 2, and between the flaps 2 and the adjacent wall portions 22 and 24, in the fully open position depends on the thickness B of the flaps and the radial distance of the pivot axes 36 of the flaps 2 from each other. According to the above measures for the width A and the thickness B of the flaps 2, the width of the powder diagonal gaps 28, 30 and 32, when all the flaps are in the fully open position (dash-dotted lines 2-2 of Fig. 1), preferably in the range between 100 mm and 800 mm, more preferably between 260 mm and 660 mm, preferably in the range between 360 mm and 560 mm, z. At about 460 mm.

Der Abstand D der Klappen 2 von der Oberfläche 4 des Kabinenbodens 6 in der Ganz-Offenstellung, wenn sie entsprechend der strichpunktierten Linien 2-2 von Fig. 1 vertikal gestellt sind, soll einerseits sehr klein sein, andererseits nicht so klein, daß die Klappen 2 auf dem Kabinenboden 6 aufstehen oder zwischen sich und dem Kabinenboden Pulverpartikel einquetschen können. Deshalb beträgt dieser Abstand D vorzugsweise zwischen 10 mm und 50 mm. Falls auf dem Kabinenboden 6 viel Überschußpulver anfällt, kann der Abstand auch größer gewählt werden.The distance D of the flaps 2 from the surface 4 of the cabin floor 6 in the fully open position, if they are placed vertically according to the dash-dotted lines 2-2 of Fig. 1, on the one hand should be very small, on the other hand not so small that the flaps 2 can get up on the cabin floor 6 or squeeze powder particles between themselves and the cabin floor. Therefore, this distance D is preferably between 10 mm and 50 mm. If there is a lot of excess powder on the cabin floor 6, the distance can also be greater.

Die Höhenabmessung der zu beschichtenden Objekte 10 kann maximal so groß sein wie die lichte Höhe E der Objekt-Durchgänge 16 und 18. Die Unterkante 44 der Objekte 10 darf maximal bis zur Unterkante 46 der Objekt-Durchgänge 16 und 18 reichen. Durch die erfindungsgemäße Ausbildung des Unterbaus 23 mit den Klappen 2 wird die Höhe F zwischen dem Grund 48, auf welchem die Pulversprühbeschichtungskabine aufstellbar ist, und der Unterkante 44 der zu beschichtenden Objekte bzw. der Unterkante 46 der Objekt-Durchgangsöffnungen 16 und 18 auf ein sehr kleines Maß reduzierbar, beispielsweise auf nur 700 mm. Der Oberbau 42 ist auf einer sehr niedrigen Höhe G von z. B. nur 600 mm auf den Unterbau 23 aufsetzbar. Die lichte Höhe zwischen der Bodenoberfläche 4 des Kabinenbodens 6 und den in Ganz-Offenstellung horizontal orientieren Klappen 2 ist abhängig von der Breite A und der Dicke B der Klappen 2.The height dimension of the objects 10 to be coated can be at most as large as the clear height E of the object passages 16 and 18. The lower edge 44 of the objects 10 may reach at most to the lower edge 46 of the object passages 16 and 18. The inventive design of the base 23 with the flaps 2, the height F between the bottom 48 on which the Pulversprühbeschichtungskabine is erectable, and the lower edge 44 of the objects to be coated and the lower edge 46 of the object through-holes 16 and 18 on a very Small size reducible, for example, to only 700 mm. The superstructure 42 is at a very low height G of z. B. only 600 mm on the substructure 23 can be placed. The clear height between the bottom surface 4 of the cabin floor 6 and the horizontally oriented in the fully open position flaps 2 is dependent on the width A and the thickness B of the flaps. 2

Die Objekt-Durchgänge 16 und 18 sind in einander gegenüberliegenden Kabinenwänden 50 bzw. 52 gebildet. Dies sind bei Rundkabinen Wandabschnitte, bei quadratischen oder Langkabinen sind es Kabinenstirnwände. In mindestens einer von zwei quer zu den Kabinenwänden 50 und 52 verlaufenden KabinenSeitenwände 54 und 56 ist mindestens eine, als Beispiel drei, Pistolenschlitzöffnung 60 zum Einführen einer Automatikpistole 12 von außerhalb der Pulversprühbeschichtungskabine in den Sprühbereich 8 gebildet, deren Schlitzbreite je einer Automatikpistole angenähert ist.The object passages 16 and 18 are formed in opposite cabin walls 50 and 52, respectively. These are in round cabins wall sections, in square or long cabins are cabin front walls. In at least one of two cabin sidewalls 54 and 56 extending transversely to the cabin walls 50 and 52, at least one, for example three, gun slot opening 60 is formed for introducing an automatic gun 12 from outside the powder spraycoating booth into the spray area 8, the slot width of each of which approximates an automatic gun.

Die Automatikpistole 12 wird von einer Tragvorrichtung 62 getragen, beispielsweise einem Hubständer oder einem Roboter. Die Pistolenschlitzöffnungen 60 erstrecken sich über eine Höhe, welche eine Beschichtung von Objekten 10 über ihre gesamte Objekthöhe ermöglicht, und damit ungefähr in einer Höhe entsprechend der Höhe E der Objekt-Durchgänge.The automatic gun 12 is carried by a support 62, such as a lift stand or a robot. The gun slot openings 60 extend over a height which permits coating of objects 10 over their entire object height, and thus approximately at a height corresponding to the height E of the object passages.

Die Klappen 2 können sich innerhalb der Kabine von dem einen Objekt-Durchgang 16 bis zum anderen Objekt-Durchgang 18 erstrecken. Der Beschichtungsbereich 8 und damit auch der Bereich, über welchen sich die Klappen 2 in horizontaler Richtung in Kabinenlängsrichtung und in Kabinenquerrichtung erstrecken, kann auf eine Teillänge der Kabine begrenzt sein, wenn ein anderer Teil der Kabine zu einem anderen Zweck dient, beispielsweise für eine zusätzliche Sprühzone 8 zum Sprühbeschichten mit Automatikpistolen 12 oder entsprechend Fig. 2 zum Sprühbeschichten mit einer Handpistole 72. Beispielsweise kann ein Längsabschnitt 74 der Kabine als Handbeschichtungsplatz 70 mit einem Handpistolen-Sprühbereich 78 ausgebildet sein. In diesem Falle hat mindestens eine der beiden Seitenwände 54 und/oder 56 der Kabine eine Handbeschichtungsöffnung 80, durch welche eine Person die Handpistole 72 auf ein zu beschichtendes Objekt 10 richten und dabei gleichzeitig den Sprühstrahl und das zu beschichtende Objekt 10 beobachten kann. Der Handbeschichtungsplatz 70 hat einen Kabinenboden 82 mit einer Bodenoberfläche 84 unter dem Handpistolen-Sprühbereich 78. Diese Bodenoberfläche 84 liegt vorzugsweise mindestens gleich hoch wie oder höher als die Oberkante der Klappen 2 in der Teil-Offenstellung und in der Ganz-Offenstellung, so daß auf dieser Bodenoberfläche 84 durch Schwerkraft abgelagertes Überschußpulver mittels Druckluft eines Druckluftschlauches oder einer anderen Druckluftquelle in Richtung zu dem Kabinenbereich geblasen werden kann, welcher die Klappen 2 aufweist, so daß das Überschußpulver dann durch die Pulverdurchfallspalte 28, 30, 32 in den Absaugkanal 20 der Automatikpistolen-Sprühzone 8 durch Schwerkraft fallen kann.The flaps 2 may extend within the cabin from one object passage 16 to the other object passage 18. The coating area 8 and thus also the area over which the flaps 2 extend in the cabin longitudinal direction and in the cabin transverse direction in the horizontal direction can be limited to a partial length of the cabin if another part of the cabin serves another purpose, for example for an additional one Spray zone 8 for spray coating with automatic guns 12 or according to FIG. 2 for spray coating with a hand gun 72. For example, a longitudinal section 74 of the cabin can be formed as a manual coating station 70 with a hand gun spray area 78. In this case, at least one of the two sidewalls 54 and / or 56 of the cabin has a manual coating opening 80 through which a person can direct the handgun 72 to an object 10 to be coated while simultaneously observing the spray jet and the object 10 to be coated. The manual coating station 70 has a cabin floor 82 with a bottom surface 84 below the handgun spray area 78. This bottom surface 84 is preferably at least equal to or higher than the top of the doors 2 in the partially open position and the fully open position, so that this ground surface 84 can be blown by gravity compressed excess powder by means of compressed air of a compressed air hose or other compressed air source in the direction of the cabin area, which has the flaps 2, so that the excess powder then through the powder diarrhea gaps 28, 30, 32 in the suction channel 20 of the automatic pistol Spray zone 8 can fall by gravity.

Die Verwendung eines Zwischenbodens als Kabinenboden 82 des Handbeschichtungsplatzes 70, welcher höher liegt als der Kabinenboden 6 des Automatikpistolen-Sprühbereiches 8, hat den Vorteil, daß unter dem Zwischenboden ein Speicherraum 86 entsteht, in welchem der Antrieb 40 für die Klappen 2 unterbringbar ist.The use of a false floor as cabin floor 82 of the manual coating station 70, which is higher than the cabin floor 6 of the automatic spray gun area 8, has the advantage that under the false floor a storage space 86 is formed, in which the drive 40 for the flaps 2 can be accommodated.

Der Kabinenboden 6 des Automatikpistolen-Sprühbereiches 8 bildet selbst den Absaugkanal 20, ohne daß dafür eine zusätzliche Vertiefung im Kabinenboden 6 erforderlich ist. Die Absaugöffnung 26 erstreckt sich vorzugsweise über die gesamte Breite des Kabinenbodens 6, welcher im Wesentlichen eben ist. Die Höhe I der z. B. rechteckigen Absaugöffnung 26 kann sich von der Oberfläche 4 des Kabinenbodens 6 bis nahe zur Unterkante der Klappen 2 erstrecken, wenn die Klappen 2 sich in horizontaler Lage befinden, wie dies Fig. 1 zeigt. Die Höhe I kann jedoch auch niedriger sein, um dadurch eine Luftbeschleunigung zu erzeugen, welche hilft, Pulverablagerungen im Absaugkanal 20 zu vermeiden. An die Absaugöffnung 26 ist ein Übergangskanal 88 zu einer im Querschnitt runden Absaugleitung 90 angeschlossen.The cabin floor 6 of the automatic gun spray area 8 itself forms the suction channel 20, without requiring an additional recess in the cabin floor 6 is required. The suction opening 26 preferably extends over the entire width of the cabin floor 6, which is substantially planar. The height I z. B. rectangular suction opening 26 may extend from the surface 4 of the cabin floor 6 to near the lower edge of the flaps 2, when the flaps 2 are in a horizontal position, as shown in FIG. 1. However, the height I may also be lower, to thereby generate an air acceleration, which helps to avoid powder deposits in the suction channel 20. To the suction opening 26, a transition channel 88 is connected to a round in cross-suction line 90.

Gemäß einer nicht gezeigten Ausführungsform der Erfindung befindet sich der Handbeschichtungsplatz 70 nicht innerhalb, sondern außerhalb der Pulversprühbeschichtungskabine benachbart zu einem der Objekt-Durchgänge 16 oder 18; oder je ein solcher Handbeschichtungsplatz 70 an jedem Ende des Automatikpistolen-Sprühbereiches 8 entweder innerhalb oder außerhalb der Pulversprühbeschichtungskabine.According to an embodiment of the invention not shown, the manual coating station 70 is not located inside but outside the powder spray coating booth adjacent to one of the object passages 16 or 18; or one such hand coating station 70 at each end of the automatic gun spray area 8, either inside or outside the powder spray booth.

Claims (12)

  1. Powder spray coating cubicle, comprising at least two flaps (2), which are arranged between a cubicle floor (6) and a spraying area (8) situated above them and are arranged pivotably (36) in relation to one another about a respective longitudinal flap direction, characterized in that the flaps (2) are arranged pivotably (36) about their longitudinal direction between a partly open position and a fully open position, the flaps (2) forming both in the partly open position and in the fully open position between themselves and between the laterally outermost flaps (2) and cubicle walls (22, 24) alongside said outermost flaps in each case a powder falling-through gap (28, 30, 32), which extends in the longitudinal direction of the flaps and is smaller in the partly open position than in the fully open position, but at least large enough in the partly open position for powder particles falling downwards from the spraying area (8) under the force of gravity to be able to fall through the powder falling-through gap (28, 30, 32).
  2. Powder spray coating cubicle according to Claim 1, characterized in that the cubicle side walls (22, 24), which extend from the cubicle floor (6) upwards to laterally next to the outermost flaps (2), have an inclination of at least 45 degrees or more, so that coating powder can slip off them under the force of gravity.
  3. Powder spray coating cubicle according to Claim 1 or 2, characterized in that the cross section of the flaps (2) that is visible from above is larger in the partly open position than in the fully open position.
  4. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that the surface (4) of the cubicle floor (6) and the surface of the cubicle walls (22, 24), which extend from the cubicle floor upwards to next to the outermost flaps (2), are formed such that they are uninterrupted and smooth, so that powder particles can easily slide on them.
  5. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that the longitudinal direction of the flaps (2) extends in the direction of the rectilinear distance between object apertures (16, 18), which are formed lying opposite one another in walls (50, 52) of the powder spray coating cubicle for objects (10) that are to be coated to move automatically through the powder spray coating cubicle.
  6. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that an extraction opening (26) for the extraction of air and powder particles is formed in a lower cubicle wall part alongside the cubicle floor (6), and has a cross section which is adapted to the surface (4) of the cubicle floor (6) and extends transversely in relation to the pivoting axis (36) of the flaps (2) in both transverse directions as far as above the outermost pivoting axes (36) of the flaps (2).
  7. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that the flaps (2) are arranged pivotably about their longitudinal direction, independently of one another and individually.
  8. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that the flaps (2) are provided with a drive device (40), by means of which they are respectively pivotable together about their longitudinal axis (36).
  9. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that formed at least in a cubicle wall (54, 56) next to the spraying area (8) there is a respective gun insertion slot (60), which extends from the bottom upwards and the slot width of which is made to approximate an automatic gun, in order to insert the latter into the spraying area from outside the spray coating cubicle.
  10. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that the flaps (2) are arranged in the longitudinal direction and/or in the transverse direction of the powder spray coating cubicle over the entire length and/or the entire width of the spraying area (8), and in that the part of the cubicle floor (6) lying under the flaps (2) extends over at least 75% of the inner cubicle width in the spraying area (8).
  11. Powder spray coating cubicle according to at least one of the preceding claims, characterized in that formed next to at least one end of the flaps (2) in the longitudinal direction is a manual coating place (70), which has a floor surface (84) which is at the same height as or higher than the upper edge of the flaps (2) in the partly open position and in the fully open position, one end of the floor surface (84) of the manual coating place (70) being arranged alongside the said end of the flaps (2) in the longitudinal direction, so that excess powder deposited on the floor surface (84) can be transported to the flaps (2) and then can fall under the force of gravity between the powder falling-through slots (28, 30, 32) into the extraction channel (20).
  12. Powder spray coating cubicle according to Claim 11, characterized in that the manual coating place (70) is formed within the powder spray coating cubicle, in that formed in at least one cubicle wall above the floor surface (84) of the manual coating place (70) is a manual coating opening (80), the size and position of which are suitable for directing a manual gun (72) from outside the spray coating cubicle in the direction of an object to be coated in the spray coating cubicle and at the same time for a person who is holding the manual gun to observe visually the spray jet and the object (10) to be coated.
EP04027001A 2004-11-12 2004-11-12 Powder spray booth Active EP1656998B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK04027001T DK1656998T3 (en) 2004-11-12 2004-11-12 Powder spray coating
AT04027001T ATE364453T1 (en) 2004-11-12 2004-11-12 POWDER SPRAY COATING CABIN
EP04027001A EP1656998B1 (en) 2004-11-12 2004-11-12 Powder spray booth
ES04027001T ES2287626T3 (en) 2004-11-12 2004-11-12 COATING POWDER COVERING POWDER.
DE502004004104T DE502004004104D1 (en) 2004-11-12 2004-11-12 powder spraycoating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04027001A EP1656998B1 (en) 2004-11-12 2004-11-12 Powder spray booth

Publications (2)

Publication Number Publication Date
EP1656998A1 EP1656998A1 (en) 2006-05-17
EP1656998B1 true EP1656998B1 (en) 2007-06-13

Family

ID=34927378

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Application Number Title Priority Date Filing Date
EP04027001A Active EP1656998B1 (en) 2004-11-12 2004-11-12 Powder spray booth

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Country Link
EP (1) EP1656998B1 (en)
AT (1) ATE364453T1 (en)
DE (1) DE502004004104D1 (en)
DK (1) DK1656998T3 (en)
ES (1) ES2287626T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010012505A1 (en) 2008-07-29 2010-02-04 Lasa Impianti S.R.L. Powder painting cabin

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920323B1 (en) 2007-08-31 2010-10-22 Sames Technologies APPLICATION CABIN FOR PULVERULENT COATING PRODUCTS
DE102013006644A1 (en) * 2013-04-18 2014-10-23 Eisenmann Ag Device for conducting overspray-laden process air and coating installation with such
CN112657730A (en) * 2020-11-19 2021-04-16 无锡市添彩环保科技有限公司 Powder spraying chamber capable of eliminating static electricity and static electricity eliminating method thereof
CN112774904A (en) * 2021-01-12 2021-05-11 长沙瑞正涂装科技有限公司 Circulation spraying production line

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
CH611184A5 (en) * 1975-09-29 1979-05-31 Gema Ag
DE19616220A1 (en) * 1996-04-23 1997-10-30 Erich Kraemer Powder coating booth
IT1316191B1 (en) * 2000-01-25 2003-04-03 Wagner Itep S P A PAINTING BOOTH WITH IMPROVED DUST RECOVERY SYSTEM.
DE10028553A1 (en) 2000-06-09 2001-12-13 Itw Gema Ag Powder spray coating booth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010012505A1 (en) 2008-07-29 2010-02-04 Lasa Impianti S.R.L. Powder painting cabin

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DK1656998T3 (en) 2007-09-10
EP1656998A1 (en) 2006-05-17
ES2287626T3 (en) 2007-12-16
ATE364453T1 (en) 2007-07-15
DE502004004104D1 (en) 2007-07-26

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