WO1996012568A1 - Cabine de revetement par pulverisation de poudre - Google Patents

Cabine de revetement par pulverisation de poudre Download PDF

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Publication number
WO1996012568A1
WO1996012568A1 PCT/EP1995/004115 EP9504115W WO9612568A1 WO 1996012568 A1 WO1996012568 A1 WO 1996012568A1 EP 9504115 W EP9504115 W EP 9504115W WO 9612568 A1 WO9612568 A1 WO 9612568A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder coating
powder
coating booth
booth
booth according
Prior art date
Application number
PCT/EP1995/004115
Other languages
German (de)
English (en)
Inventor
Erich Krämer
Mathias Krämer
Original Assignee
Kraemer Erich
Kraemer Mathias
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
Priority claimed from DE19524327A external-priority patent/DE19524327A1/de
Application filed by Kraemer Erich, Kraemer Mathias filed Critical Kraemer Erich
Priority to DE59504931T priority Critical patent/DE59504931D1/de
Priority to EP95935952A priority patent/EP0789628B1/fr
Publication of WO1996012568A1 publication Critical patent/WO1996012568A1/fr

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
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • B05B16/25—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations for both automatic and manual spraying
    • 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
    • B05B14/41—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of 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 is concerned with powder coating booths which are intended in particular, but not exclusively, for continuous operation and which are also suitable, for example, for manual coating operation.
  • a powder coating booth has at least one powder spraying device which is connected to at least one powder preparation and supply device.
  • Powder coating booths of the customary type comprise, for example, a plurality of powder spraying devices which must be movable over the entire height of the booth and which can be provided in an adjacent arrangement on opposite wall areas of the booth.
  • powder spraying devices There are also systems that have one or more powder spraying devices on only one wall side, both for manual coating and in automatic mode.
  • a powder coating booth requires a large amount of space and, depending on the number of powder spraying devices in particular, has a considerable length of, for example, about 6 m.
  • powder spray devices comprising several fingers are available nowadays which, using the tribology effect, can produce a very uniform and increased fog effect in the cabin interior and can achieve larger spray heights and widths.
  • the invention aims to provide a powder coating booth of the generic type while overcoming the difficulties described above, which has a reduced space requirement, can be used universally for automatic operation and manual operation, and also a simplified cleaning of the interior of the cabin according to a preferred embodiment enables.
  • a powder coating booth is provided with at least one powder spraying device, which is connected to at least one powder preparation and supply device, which is characterized in that the booth has a small base area and is columnar, and that in at least one wall the Cabin a closable slot for performing the automatic powder spraying direction is provided.
  • Powder spray devices with several spray fingers which use the tribological effect during the powder spraying process, can preferably be used here. Even with a reduced number of powder spraying devices, a greater spray height and width as well as increased fog formation are obtained.
  • the design of the powder coating booth according to the invention has a significantly reduced space requirement, in particular on the floor area, since it is relatively short in the longitudinal direction. As a result, the space available for such a powder coating booth can be considerably reduced and integration into a powder coating line is possible without difficulty.
  • the powder spraying devices arranged vertically one above the other which are preferably arranged on opposite walls of the booth, can produce a sufficiently uniform and dense veil for the powder coating of the goods over a relatively short distance, without need larger height dimensions.
  • a compact powder coating booth is obtained, which also has a smaller internal volume than previously conventional powder coating booths, so that the air conditions are more favorable and the facilities for this can be operated and procured more cheaply, since compared with a reduced supply power the powder coating booths known per se get by and substantial energy savings are achieved.
  • the cross section of the booth can be circular or square.
  • the cabin forms a structure similar to a standing cylinder, while in the case of a square cross-sectional shape, a tower-like configuration is obtained.
  • the corners of a square cross section are at least in the interior of the Powder coating booth preferably rounded off or beveled.
  • the slots arranged in the opposite wall areas of the powder coating booth can preferably be closed by means of at least one flap which is open to the outside, the flap directly delimiting the respective slot.
  • Such a design enables the slots to be tightly closed in the event of cleaning, so that, according to a preferred embodiment, the cabin forms a closed container when the slots are closed, the inner walls of which can preferably be automatically cleaned by means of a cleaning device which can be moved in the vertical direction, for example. which prevents powder dust from escaping during cleaning in order to minimize the workload.
  • a fixed slot could be provided, for example in an openable door, which can be closed in a suitable manner in order to carry out the cleaning work.
  • the cleaning in particular the automatic cleaning, is thus considerably simplified and it can be carried out more efficiently, since there are no constructions of the cleaning devices which are similar to guiding slides Movable in the longitudinal direction is required, but it is preferably possible to use a cleaning device which, if necessary, only has to be moved in the vertical direction and thus is self-centering on the cabin walls.
  • the conveying device can have an articulated arm or swivel arm construction, it being possible, for example, to provide a double articulated arm construction, an auxiliary conveyor or the like for the arrangement of a cleaning device.
  • the cleaning device could even be connected directly to the conveyor.
  • the cleaning device comprises a telescopic arrangement, by means of which the cleaning device can be moved in the vertical direction in the interior formed by the cabin.
  • the cleaning device can be adapted to the cross-sectional shape and the height of the cabin.
  • a cleaning device can be arranged in a fixed manner or used for cleaning. It can then, for example, perform a rotary movement about its longitudinal axis and / or preferably a slight oscillating movement about the longitudinal axis and / or in the lateral direction.
  • the cleaning device can expediently have a basket-shaped support structure. In the case of such a cleaning device, it can be moved into the cabin from the side, for example, and the cleaning of the inside wall or the inside walls of the cabin can be carried out quickly and completely with a large area coverage by the cleaning device.
  • the powder coating booth according to the invention also makes it possible in a simple manner that the cleaning device can be operated wet-working in order to ensure a more efficient and reliable cleaning, especially when changing the color of the cabin.
  • Combined designs of the cleaning device, such as compressed air operation and wet operation, are of course also possible.
  • the cleaning device sweeps over the inner walls of the closed container, and in particular sponge parts, nozzles or the like can be provided thereon.
  • the floor area of the booth is funnel-shaped, and there is a powder outlet and, if appropriate, a closable opening for liquid discharge during wet cleaning.
  • the powder stripped or blown off on the wall surfaces of the booth can be conveyed to the powder outlet, suctioned off and, if necessary, recovered during cleaning with the aid of the automatically operating cleaning device.
  • the liquid can also be removed from the floor area of the cabin through the funnel-shaped configuration, so that the cleaning work can be carried out fully automatically with the powder being recovered.
  • a lock is arranged on the inlet and outlet sides of the booth, which can be converted into a post-coating location or a pre-coating location.
  • These lock (s) are of course designed so that they can be closed tightly when the interior of the cabin is cleaned. What is important in this preferred design form is the fact that these locks have a double function and can also be converted into a post-coating station or a pre-coating station, on which, depending on the configuration of the parts to be coated, a manual pre-coating or post-coating can optionally be accessed from the right or left can also be carried out when the system is running.
  • the powder coating booth according to the invention can be universally adapted in a simple manner to the well-specific characteristics.
  • the lock floor is preferably designed to be stationary.
  • flaps of different sizes adjoining one another are provided in the opposite wall areas of the booth assigned to the powder spraying devices in a mirror-image arrangement, for manual and / or automatic operation.
  • the adjacent flaps can all be opened towards the outside.
  • opening the smaller flap is sufficient to expose the corresponding slot for the passage of the powder spraying device.
  • the larger flap is then also opened and the cabin interior is accessible to the hand-operated powder spraying device (s).
  • the hand-operated powder spraying device (s) to be used can be brought in the longitudinal direction offset from one another to act on the material. This prevents mutual hindrance when working the hand-operated spraying devices on the opposite surfaces.
  • the powder spraying devices can be arranged directly opposite one another and can, for example, be synchronously movable in the vertical direction, for example. Here, a type of "pusher effect" can be caused due to the electrostatics. In certain applications, an arrangement of the spray device (s) on a wall surface of the cabin can be sufficient.
  • the booth wall regions adjoining the locks can be folded outwards in such a way that an opening is formed which is so large that the cleaning device can be inserted and retracted laterally into the booth.
  • the powder coating booth according to the invention can also be designed such that the cleaning device is retracted from above.
  • the booth is preferably open at the top.
  • a blower ring can be assigned to the open side of the cabin, or nozzles can be assigned, which can be fed by means of exhaust air, for example from the secondary filter. If necessary, blowing nozzles can also be provided in the area of the locks. This exposure to air can effectively prevent the powder / air mixture from escaping from the cabin in the most energy-saving manner possible. Blow nozzles can optionally also be provided in the area of the locks in the cabin height direction.
  • the top of the cabin can preferably be closed by means of a cover, which is preferably formed in one piece and attached to the cleaning device.
  • a cover which is preferably formed in one piece and attached to the cleaning device.
  • part of the cabin wall forms a rear wall of the central powder processing and supply device, and there is a connection opening to the interior of the cabin, which can be closed by means of a flap that can be opened to the interior of the cabin.
  • a connection opening to the interior of the cabin, which can be closed by means of a flap that can be opened to the interior of the cabin.
  • the flaps provided in the cabin according to the invention are designed such that they have seals on their sealing edges, so that the interior of the cabin is reliably sealed and also pressure-tight when the flaps are closed, which is particularly useful for carrying out wet cleaning work with the help of the cleaning device according to the invention is advantageous.
  • the powder coating booth is designed in such a way that it considerably reduces it Base area and that it also encloses a reduced internal volume compared to conventional coating booths. This means that the cabin has a reduced air volume and operation is significantly more energy efficient.
  • a design of a powder coating booth also enables effective and automatic cleaning of the inner walls in a structurally simple manner by using a self-centering cleaning device which allows cleaning in an automated manner in a time-saving manner.
  • cleaning devices which are adapted to the cross-sectional shape and the height of the powder coating booth with regard to the outline and which do not need to move vertically.
  • these can be used fixed or rotating about their longitudinal axis, and / or such a cleaning device can also perform an oscillating movement about the longitudinal axis and / or in the lateral direction.
  • the wall or wall areas opposite the spraying devices should preferably be non-conductive in order to prevent charging.
  • the corresponding walls or wall areas could be produced from non-conductive material or in any case a non-conductive coating can be provided on the entire surface or only on partial areas. Therefore, the cabin can discharge itself, charging can be suppressed and safe operation can be ensured.
  • FIG. 1 is a schematic perspective overall view of a powder coating booth according to the invention
  • FIG. 3 shows a schematic longitudinal sectional view of the cabin shown in FIG. 2 with several different embodiments of an automatically operable cleaning device
  • FIG. 4 shows a cross-sectional representation of a further embodiment of a cabin with several flaps of different sizes on the opposite wall areas for the use of the powder spraying devices
  • FIG. 5 shows a schematic example of a connection of flaps which, when closed, permit the interior of a powder coating booth to be sealed off
  • FIG. 6 shows a schematic plan view of a further preferred embodiment of a powder coating booth, which prevents the cleaning device from being retracted from the Permitted on the side or in the direction of travel of the cabin in automatic mode,
  • FIG. 7 shows a further embodiment of a powder coating booth with an associated cleaning device which can be moved in from the side and which is square in cross section,
  • FIG. 8 shows a schematic longitudinal sectional view of an alternative embodiment of a cleaning device
  • FIG. 9 is a schematic side view of an expedient embodiment of a powder spraying device with an integrated cover for the lead-through slot in the cabin wall, and
  • FIG. 10 shows a perspective cutout view of a floor area of a powder coating booth with a flat floor and an associated floor cleaning device.
  • a preferred embodiment of a powder coating booth is shown, which has a circular or possibly oval cross-section and is in the form of a standing cylinder, for example.
  • the powder coating booth 1 has a small base area 2 and is configured in the form of a column.
  • the material to be coated is moved in the direction of passage A through the interior formed by the powder coating booth 1 in an automatic mode.
  • At least one slot 3 can be seen on one wall or on opposite walls of the powder coating booth 1, through which at least one powder spraying device 4 passes, which has finger-shaped spray parts, for example, which are arranged one above the other in the cabin interior, for example in the vertical direction.
  • This Powder spraying devices 4 are known per se and they permit powder coating even when the powder spraying devices 4 are arranged directly on a line.
  • Each slot 3 is assigned a flap 5 which is opened in the outward direction during the coating operation.
  • a fixed slot is provided in an open door for the implementation of the powder spray device (s) 4. In order to carry out the cleaning described below, this is then or these fixed slots can be closed.
  • the powder spraying device (s) 4 are connected to a central powder preparation and supply device 6, a so-called "powder center", which in the embodiment shown is arranged such that part of the cabin wall forms the rear wall of this central powder preparation and supply device 6 .
  • a so-called "powder center” which in the embodiment shown is arranged such that part of the cabin wall forms the rear wall of this central powder preparation and supply device 6 .
  • a connection opening 7 to the interior of the cabin 1, which can be opened and closed by means of a flap 8.
  • the ceiling surface 9 of the powder coating booth 1 has a slot-shaped passage 10, which extends in the direction of passage A.
  • a conveyor frame 11 extends through this slot-shaped passage 10 in continuous operation, on which material to be coated and not shown is arranged.
  • a conveyor device for example a chain conveyor 12 or the like indicated in FIG. 2
  • this conveyor frame 11 with the material to be coated attached to it is guided through the interior of the powder coating booth 1 during continuous operation in the direction of passage A and past the powder spraying devices 4 .
  • the ceiling surface 9 can alternatively be omitted so that it is open towards the top.
  • annular air blowing device 40 and / or blowing nozzles 41 can also be additionally arranged in the central region.
  • the annular air blowing device 40 has an annular base body and a plurality of nozzle openings (not shown in any more detail) which are designed and aligned in such a way that they blow air towards the interior of the powder coating booth 1.
  • the annular air-blowing device 40 and / or the blowing nozzles 41 can be fed with exhaust air from the post-filter, that is to say with ultra-pure air. This air prevents the air / powder mixture from escaping upwards on the open top of the powder coating booth 1 in the coating operation. With such a construction of the powder coating booth, one not only obtains a simplified construction since a ceiling surface 9 is missing, but corners and difficult-to-clean places can also be avoided in order to make the cleaning process, which will be explained in more detail below, more efficient.
  • an outwardly projecting edge 42 can be formed at the upper and / or lower end of the longitudinal wall surface of the powder coating booth 1, which forms a kind of pocket 43.
  • This detail is shown in an enlarged view in FIG. 2a. If, as shown for example in FIG. 3 of the drawing, the cleaning device 20 has a scraper 25 or a scraper lip (not shown), this scraper 25 can be inserted into the pocket-shaped space 43 at the end of the cleaning work, and with a sealing part 45, which is provided on the cleaning device 20 (see FIG. 2a), the pocket-shaped space 43 can then be sealed.
  • nozzles 47 which can be designed as cleaning nozzles, for example as blowing nozzles, one can then enter the pocket-like space 43, which is so tightly closed Cleaning medium, such as compressed air or the like (see description below), can be introduced, with suction being able to take place if necessary.
  • the exhaust air stream containing the derived powder can then be fed to a cyclone or the like via an outlet 48, for example to enable recovery.
  • the nozzles 47 can be arranged opposite one another or offset from one another and, of course, a plurality of such nozzles 47 and, if appropriate, also a plurality of outlets 48 are provided over the circumference of the pocket-shaped space 43 formed. With the help of this design, the scraper 25 can be cleaned even at the end of the cleaning process, thereby ensuring that the scraper 25 does not cause contamination of the powder during a further color change.
  • the powder coating booth 1 has a lock 13 on the inlet side and outlet side in the direction of flow A.
  • the lock 13 comprises a preferably fixed base 14 and door-shaped flaps 15 which are rotatably arranged on the base body of the powder coating booth 1.
  • blowing nozzles 46 can optionally be arranged in the region of the longitudinal edges and / or the transverse edges of the lock 13. These blowing nozzles 46 direct an air flow in the direction of the interior of the powder coating booth and thus prevent the powder / air mixture from escaping from the interior of the powder coating booth 1 when the lock 13 is open, similar to the embodiment variant described above in which the powder coating booth 1 is on the top is open.
  • the door-shaped flaps 15 of the lock 13 are shown in such a state that the lock 13 forms a precoating station, at which a manual coating station is formed Pre-coating can be carried out on the material to be coated.
  • the design of the lock 13 on the outlet side can be carried out in the same or a similar manner, so that it is then also possible, if appropriate, to provide a post-coating space through the lock 13.
  • the post-coating station or pre-coating station formed in this way is optionally accessible from the right or left according to the requirements, for which purpose the door-shaped flaps 15 are opened or closed accordingly.
  • the base region 16 of the powder coating booth 1 is preferably funnel-shaped, and a connection to a powder outlet 17 or, if appropriate, to a liquid outlet line 18 can be established.
  • the floor can be flat or slightly inclined.
  • the powder coating booth (not shown in detail) has a flat bottom 57
  • the powder can be introduced during operation by means of a floor cleaning device 58 in the direction of a suction channel 59 which is connected, for example, to a downstream cyclone (not shown in more detail).
  • the floor cleaning device 58 shown comprises a curved, preferably spiral-shaped clearing arm 60, on which scraping devices, such as brushes or the like and / or blowing devices, can be provided.
  • this clearing arm 60 is about an approximately vertical axis 61 in the interior of the powder coating Cabin moves that the flat bottom 57 is completely swept over the axis of rotation 61 during a complete rotation of the clearing arm 60.
  • a flat floor 57 of a powder coating booth can also be automatically cleaned.
  • the powder coating booth 1 has a compact design and in particular a relatively small base area. This results in a reduced volume enclosed by the powder coating booth 1, so that the powder coating booth 1 can be operated with a reduced air budget of only 25% of the previous or less. This reduction in the power volume results in considerable energy savings when operating the powder coating booth 1.
  • the more favorable air budget of the powder coating booth 1 that can be achieved with the invention is also due to the fact that there are substantially smaller opening areas, the length of the slots 3, 3 'being strong is reduced, and the number of slots 3, 3 'is significantly less than in the case of powder coating booths which have been customary to date.
  • the pre- and post-coating stations are completely eliminated.
  • a cleaning device designated as a whole by 20, which allow the inner walls of the powder coating booth 1 to be cleaned automatically. If, for example, a powder change is to be carried out, the flaps 5 for the powder spray devices 4 and the door-shaped flaps 15 of the locks 13 are closed.
  • the connection opening 7 from the central powder preparation and supply device 6 to the interior of the powder coating booth 1 can be exposed by opening the flap 8, and the excess powder accumulated in the central powder preparation and supply device 6 can enter the interior of the powder coating booth, sucked in and discharged via the powder outlet 17 to the powder circuit for recovery.
  • FIG. 1 preferred embodiments of a cleaning device, designated as a whole by 20, are shown, which allow the inner walls of the powder coating booth 1 to be cleaned automatically.
  • the cleaning device designated overall by 20
  • the slot-shaped passage 10 in the ceiling surface 9 of the powder coating booth 1 which can be removed from the cleaning device 20, being automatically closed by means of a plug-shaped seal 21.
  • the cleaning device 20 is then moved in the interior of the powder coating booth 1 in the vertical direction from top to bottom and possibly back, a telescopic arrangement 22 being provided for this in the preferred embodiment according to FIG.
  • Nozzles 23 can be provided on the cleaning device 20 for wet cleaning of the inner walls of the powder coating booth 1, brushes 24, sponges or the like and / or scrapers 25.
  • this cleaning device 20 depends on the geometric conditions and the purposes of use, but in particular, in an automatic manner, cleaning the interior of the powder coating booth 1 in the vertical direction is dry, for example by means of compressed air and / or suction air, ionized air and / or wet, for example with the help of water and additives.
  • hot air and / or room air may be used in addition to accelerate the cleaning process, for example by means of propellant nozzles. Since all openings on the powder coating booth 1 for the powder coating booth 1 for the intended operation of the powder coating booth are closed with associated devices, the powder coating booth 1 forms a closed container which can be cleaned in an effective and automatic manner dry and wet.
  • the liquid outlet line 18 is provided in the bottom region 16, which is evident with the aid of a flap 26 if the powder which has been wiped off in a dry manner has previously been removed from the inner wall of the powder coating booth 1 and, if appropriate, from the central powder preparation and supply device 6 to the powder outlet 17 has been promoted.
  • the at Wet cleaning device 20 introduced cleaning liquid can be reliably discharged via the liquid outlet line 18 on the bottom side of the powder coating booth 1. In the case of wet cleaning, this can be accelerated by means of hot air and / or room air and / or blow-off nozzles.
  • This self-centering cleaning device 20 which is also essential according to the invention, in connection with the columnar configuration of the powder coating booth 1 allows the booth 1 to be cleaned automatically and efficiently in the vertical direction, in a structurally simple manner, since rail guides and the like for movement of the cleaning device 20 in the longitudinal direction or in the direction of passage A of the cabin 1 are not required.
  • FIG. 4 shows a schematic cross-sectional view of a further preferred embodiment of a powder coating booth, denoted overall by 1 '.
  • this powder coating booth 1 ' has a double flap arrangement on the opposite wall areas for the introduction of the powder spraying devices 4', which comprises at least two flaps of different sizes.
  • the flap 5 ' provided in the preceding illustration is small in size and serves to open and close the associated slot 3' for carrying out the powder spraying devices 4 '. This is followed by a larger flap 30 on each side, which is also visible to the outside, as shown in broken lines in Figure 4.
  • the powder spraying device (s) can be arranged horizontally or vertically next to or on top of one another.
  • seals that differ from the illustration can also be used, and of course the same or similar and corresponding seals are also provided on the sealing edges of the further flaps of the powder coating booth construction 1, 1 ′ that may be provided, in order to ensure a tight seal for the cleaning process and use of the cleaning device 20 to have a closed container which is formed by the powder coating booth 1, 1 '.
  • FIG. 6 shows a further embodiment variant of a powder coating booth, designated as a whole by 1 ".
  • the details which correspond to the above embodiments are not explained again, but only the essential differences from them. The same or similar parts are therefore given the same reference numerals in FIG. 6.
  • the booth wall areas adjacent to at least one lock 13 can be folded outwards, as is shown with the flap arrangement denoted overall by 32, that the cleaning device 20 explained above and shown schematically in FIG. 6 in the direction of flow A or laterally into the Powder coating cabin 1 "can be used and retracted.
  • the flap arrangement 32 which can optionally be linked to the arrangements described above, for example according to FIG. 4, permits such a large opening area on the powder coating booth 1 "that the cleaning device 20 can be exposed from the side into the interior of the powder coating booth 1 " is moved into it.
  • the flap arrangement 32 is closed again and brought into the position shown by the solid line, the door-shaped flaps 15 of the locks 13 are closed and the flap 8 for the connection opening 7 is closed the powder preparation and supply device 6 can be opened.
  • the excess powder can then get from the central powder preparation and supply device 6 into the interior of the powder coating booth 1" and pass through the powder outlet 17 explained above be returned to the powder cycle.
  • FIG. 7 shows a further embodiment of a powder coating booth 1 "'in a sectional view similar to FIG. 6.
  • the powder coating booth 1"' is square in cross section.
  • the inner edge areas are rounded or beveled for effective cleaning as shown.
  • a corresponding flap arrangement 32 ' is provided in the area of at least one lock 13, which allows the cleaning device 20' to be inserted from the side when the flap arrangement 32 'is open.
  • a double flap arrangement with a smaller flap 5 'and a larger flap 30 is also provided on the opposite wall areas of the powder coating booth 1 "', which is arranged in mirror image on the opposite wall areas of the powder coating booth 1" 1 .
  • FIG. 8 serves to illustrate a further embodiment of a cleaning device designated overall by 20 ".
  • This cleaning device 20" is adapted in terms of height and cross-sectional shape to the corresponding design of the powder coating booth designated 1 "" there.
  • the cleaning device 20 has, for example, a basket-shaped support structure 50, on which brush inserts 51 are optionally provided which can be rotated about its own axes.
  • this cleaning device 20 is essentially fixed in the interior of the powder coating booth 1 "”arranged.
  • This cleaning device 20 "sweeps over all inner wall surfaces of the powder coating booth 1""for cleaning.
  • the cleaning device 20" can perform a rotary movement about its longitudinal axis. To assist, it can preferably perform a slight oscillating movement about the longitudinal axis and / or a slight movement in the lateral direction.
  • This cleaning device 20 " is designed similarly to, for example, a brush arrangement that is used, for example, in vehicle washing systems. Otherwise, the further details which are shown in FIG. 8 have already been explained above in connection with further embodiments of a powder coating booth.
  • FIG. 9 shows a schematic side view of a preferred embodiment of a powder spraying device 4 ", which comprises, for example, finger-shaped spray parts.
  • the powder spraying device 4" shown in FIG. 9 has diaphragm parts 56 loosely arranged on a shaft 55, which are preferably designed such that they overlap in a scale-like manner.
  • the slot or feed-through slot 3, 3 'formed in each case in the powder coating booth can also be reliably covered during the powder coating operation, although the powder spraying devices 4 "can be seen, for example, in FIG. 1 in can move vertically or, if necessary, also in a horizontal direction in a correspondingly controlled manner.
  • the total air balance of the powder coating booth 1, 1 ', 1 ", 1"', 1 "” can be improved even further, since practically no air outlet is practically possible in the area where it is carried out on the wall surface.
  • the invention is not limited to the details of the preferred embodiments described above, but numerous changes and modifications are possible which the person skilled in the art will make if necessary. Combined cross-sectional shapes other than round and square, such as oval or the like, are also possible.
  • the flap arrangements can also be partially omitted or can also be designed differently, provided that for cleaning with the aid of the cleaning device 20, 20 ', 20 "from the powder coating booth 1, 1', 1", 1 "' , 1 "” a closed container is formed, which permits automatic cleaning without complex slide guides and, by closing the flaps, also enables them to be cleaned.
  • At least the wall region (s) opposite the powder spray device (s) 4, 4 ', 4 " can be made of non-conductive material, for example an insulator.
  • a coating of non-conductive material can be applied to a conductive base material, which can significantly reduce the cost of manufacture a smaller distance between the part to be coated and the edge of the cabin can be chosen, since the disruptive effect of the outer wall (powder is attracted to the outer wall by the grounding) is avoided. The dimensions of the cabin can thus be reduced even further.

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

Abstract

L'invention concerne une cabine de revêtement par pulvérisation de poudre (1) , comprenant au moins une unité de pulvérisation (4) reliée à au moins une unité de préparation et de distribution de la poudre (6). Cette cabine comporte une surface de base de petite taille et se présente sous forme d'une colonne dont la hauteur est en fonction de la pièce à revêtir. Une fente (3) pouvant être obturée, située dans au moins une des parois de la cabine, est conçue pour permettre le passage d'au moins une unité de pulvérisation (4). Cette cabine peut présenter en coupe une forme circulaire, carrée ou combinée, par exemple ovale, rectangulaire ou similaire. Lorsque la(les) fente(s) (3) est(sont) obturée(s), une unité de nettoyage (20) est introduite afin de procéder au nettoyage automatique de l'intérieur de la cabine. En outre, au moins un dispositif à deux volets (32) peut être installé au niveau de la paroi de la cabine de sorte que la cabine puisse passer de façon universelle en mode automatique et/ou en mode manuel. Si un sas est présent du côté admission et/ou du côté évacuation, celui-ci peut être transformé pour servir d'espace de revêtement préalable ou de revêtement ultérieur. En outre, au moins la zone de la paroi de la cabine opposée à l'unité de pulvérisation (4) est de préférence non conductrice. A cet effet, cette zone de la paroi peut être fabriquée totalement ou partiellement dans un matériau non conducteur. Le cas échéant, un revêtement non conducteur peut être appliqué sur les zones nécessaires correspondantes ou bien sur l'ensemble des surfaces de la paroi.
PCT/EP1995/004115 1994-10-24 1995-10-20 Cabine de revetement par pulverisation de poudre WO1996012568A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59504931T DE59504931D1 (de) 1994-10-24 1995-10-20 Pulverbeschichtungskabine
EP95935952A EP0789628B1 (fr) 1994-10-24 1995-10-20 Cabine de revetement par pulverisation de poudre

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4437968 1994-10-24
DEP4437968.4 1994-10-24
DE19524327.7 1995-07-04
DE19524327A DE19524327A1 (de) 1994-10-24 1995-07-04 Pulverbeschichtungskabine

Publications (1)

Publication Number Publication Date
WO1996012568A1 true WO1996012568A1 (fr) 1996-05-02

Family

ID=25941322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/004115 WO1996012568A1 (fr) 1994-10-24 1995-10-20 Cabine de revetement par pulverisation de poudre

Country Status (4)

Country Link
EP (1) EP0789628B1 (fr)
AT (1) ATE175900T1 (fr)
DE (1) DE29521972U1 (fr)
WO (1) WO1996012568A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2298152B (en) * 1995-02-25 1999-06-16 Edward Christopher Gummer Improvements in or relating to powder coating apparatus
WO2000066276A1 (fr) 1999-05-04 2000-11-09 Kraemer Erich Procede de nettoyage de l'espace interieur d'une cabine de revetement, notamment d'une cabine de revetement par poudre, cabine de revetement, notamment cabine de revetement par poudre munie d'un dispositif de nettoyage
DE10115376A1 (de) * 2001-03-28 2002-10-24 Eisenmann Foerdertech Anlage zum Pulverlackieren von Gegenständen
WO2007035656A2 (fr) * 2005-09-19 2007-03-29 Nordson Corporation Cabine d’enduction de poudre
WO2015120662A1 (fr) * 2014-02-17 2015-08-20 中山市君禾机电设备有限公司 Cabine de pulvérisation circulaire verticale pour chaîne de pulvérisation de poudre
EP4015093A1 (fr) 2020-12-18 2022-06-22 Exel Industries Robot, système et procédé de poudrage électrostatique

Families Citing this family (4)

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US6866717B2 (en) 2000-10-05 2005-03-15 Nordson Corporation Powder coating spray booth with air curtain
US6730167B2 (en) 2000-10-05 2004-05-04 Nordson Corporation Powder coating spray booth with a powder extraction system
DE10136453A1 (de) * 2001-07-26 2003-02-20 Wagner Internat Ag Altstaetten Reinigungseinrichtung einer Pulverbeschichtungskabine
DE10158826C1 (de) 2001-11-30 2003-06-05 Wagner Ag Altstaetten J Pulverbeschichtungskabine mit mindestens einem Handbeschichterplatz

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JPH05192619A (ja) * 1991-10-28 1993-08-03 Showa Alum Corp 塗装装置

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US4220432A (en) * 1978-07-03 1980-09-02 Gyromat Corp. Part gaging control for liquid seal system
US4715314A (en) * 1985-04-30 1987-12-29 H. U. Ramseier Electrostatic powder coating installation
US4898116A (en) * 1987-09-14 1990-02-06 Onoda Cement Company, Ltd. Powder coating booth
US5149373A (en) * 1988-12-21 1992-09-22 Sames S.A. Installation for applying a coating product
JPH05192619A (ja) * 1991-10-28 1993-08-03 Showa Alum Corp 塗装装置

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2298152B (en) * 1995-02-25 1999-06-16 Edward Christopher Gummer Improvements in or relating to powder coating apparatus
US6616764B2 (en) 1999-05-04 2003-09-09 Nordson Corporation Powder coating booth with a cleaning device and method
WO2000066276A1 (fr) 1999-05-04 2000-11-09 Kraemer Erich Procede de nettoyage de l'espace interieur d'une cabine de revetement, notamment d'une cabine de revetement par poudre, cabine de revetement, notamment cabine de revetement par poudre munie d'un dispositif de nettoyage
US7399362B2 (en) 2001-03-28 2008-07-15 Eisenmann Anlagenbau Gmbh & Co. Kg Installation for powder coating of articles
DE10115376A1 (de) * 2001-03-28 2002-10-24 Eisenmann Foerdertech Anlage zum Pulverlackieren von Gegenständen
DE10115376B4 (de) * 2001-03-28 2006-03-16 EISENMANN Fördertechnik GmbH & Co. KG Anlage zum Pulverlackieren von Gegenständen
US6946032B2 (en) 2001-03-28 2005-09-20 Eisenmann Maschinenbau Kg (Komplementar: Eisenmann-Stiftung) Installation for powder painting objects
JP2013059764A (ja) * 2005-09-19 2013-04-04 Nordson Corp 粉体塗装ブース
WO2007035656A3 (fr) * 2005-09-19 2007-05-31 Nordson Corp Cabine d’enduction de poudre
US7665414B2 (en) 2005-09-19 2010-02-23 Nordson Corporation Powder coating booth
WO2007035656A2 (fr) * 2005-09-19 2007-03-29 Nordson Corporation Cabine d’enduction de poudre
US8714101B2 (en) 2005-09-19 2014-05-06 Nordson Corporation Powder coating booth
US9221069B2 (en) 2005-09-19 2015-12-29 Nordson Corporation Powder coating booth
WO2015120662A1 (fr) * 2014-02-17 2015-08-20 中山市君禾机电设备有限公司 Cabine de pulvérisation circulaire verticale pour chaîne de pulvérisation de poudre
EP4015093A1 (fr) 2020-12-18 2022-06-22 Exel Industries Robot, système et procédé de poudrage électrostatique
FR3117910A1 (fr) 2020-12-18 2022-06-24 Exel Industries Robot, système et procédé de poudrage électrostatique
US11845096B2 (en) 2020-12-18 2023-12-19 Exel Industries Robot, system and method for electrostatic powder coating

Also Published As

Publication number Publication date
EP0789628B1 (fr) 1999-01-20
EP0789628A1 (fr) 1997-08-20
DE29521972U1 (de) 1998-12-24
ATE175900T1 (de) 1999-02-15

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