EP0839581A1 - Cabine de poudrage avec doublure intérieur flexible - Google Patents

Cabine de poudrage avec doublure intérieur flexible Download PDF

Info

Publication number
EP0839581A1
EP0839581A1 EP96117585A EP96117585A EP0839581A1 EP 0839581 A1 EP0839581 A1 EP 0839581A1 EP 96117585 A EP96117585 A EP 96117585A EP 96117585 A EP96117585 A EP 96117585A EP 0839581 A1 EP0839581 A1 EP 0839581A1
Authority
EP
European Patent Office
Prior art keywords
film
area
film surface
powder coating
coating booth
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.)
Withdrawn
Application number
EP96117585A
Other languages
German (de)
English (en)
Inventor
Josef Hasler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP96117585A priority Critical patent/EP0839581A1/fr
Publication of EP0839581A1 publication Critical patent/EP0839581A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet

Definitions

  • the invention relates to a powder coating booth with a work space which is at least partially enclosed by boundary surfaces and a coating method.
  • a workpiece For powder coating a workpiece, it is usually brought into the working area of a powder coating booth.
  • the workpieces are conveyed through the work area with conveyor systems, especially hanging on rails.
  • the workpiece In the at least largely closed powder coating booth, the workpiece is sprayed with, preferably electrostatically charged, powder from spray nozzles.
  • powder Usually more powder is used than can be taken up by the workpiece.
  • the excess powder mainly falls on the floor of the work area. A not insignificant part of the powder reaches the wall and ceiling areas of the work area and remains there.
  • this liability is not permanent, so that when the color is changed, the work area needs to be cleaned in order to prevent powder with the previously used color from accidentally reaching the workpiece during the subsequent coating of a workpiece with a different colored powder.
  • EP 200 681 discloses a cleaning frame which is adapted to the inner cabin cross section and which can be moved through the cabin suspended on rails. Blow nozzles, sponges, brushes, rags, cloths or leather are attached to the frame. A similar solution is known from EP 433 589, but which provides an inflatable bellows to improve the cleaning performance on the frame, so that an optimal wiping pressure can be set. Also to improve cleaning performance EP 678 335 proposes to design the cleaning elements to be movable relative to the frame. In order to dispense with the attachment of the cleaning elements to a frame that can be guided through the work area, EP 701 868 provides scrapers that can be moved along the inner boundary surfaces of the work area and are magnetically held by movement devices arranged outside the work area.
  • the object of the invention is now to find a simple cleaning solution which, in a short amount of time, enables the excess coating powder to be substantially completely removed from the work space.
  • the solution according to the invention provides that by using at least one removable film surface, which is held by a holding means and extends at least along part of a boundary surface, at least part of the cleaning of the work space or its boundary surfaces is achieved by removing the film surface .
  • the removal of a film surface can be carried out very quickly and in particular in such a way that essentially no coating powder is whirled up.
  • the powder which is led out of the working space with the film surface can be removed from the film surface outside the working space and in particular can be used again for coating.
  • the powder coating booth comprises a holding means with at least one holding element, at least one holding element preferably being designed as a suction element, in particular as a suction strip with a plurality of suction openings, and being arranged on a boundary surface, so that a film area adjacent to the suction element is due to a Generable negative pressure can be held on the suction element.
  • a feed means is preferably provided for introducing the film surface into the work space.
  • an execution means is also provided for removing the film surface from the work space.
  • the film surface of the feed and execution means are adapted to the respective coating booth.
  • a sack-shaped film surface is preferably inserted into and removed from the work area, in particular by hand.
  • the film surface forms an inner shell which lies against the boundary surfaces and has an opening for inserting and carrying out the workpieces and, if appropriate, with a suction opening for suctioning off the excess powder.
  • a film surface is provided for each frequently used color, which can be reused for the same color without thorough cleaning.
  • the film surfaces are disposable films, which are therefore not cleaned, but only replaced. If cleaning is provided, it can preferably be carried out outside the work area with a particularly suitable cleaning device.
  • the film surface is composed of a plurality of film webs, each of which runs along a boundary surface.
  • a roll holder is provided on one side of a boundary surface.
  • a feed film roll is arranged in one roll holder and a collecting roll in the other, at least the collecting roll being connected to a rotary drive.
  • a holding means is provided, in particular with at least one suction element. If necessary, the film web can be stretched between the two rollers in such a way that it is not moved significantly away from the boundary surface due to the clamping force, even if the vacuum is provided in the work area.
  • the two side edges of the film web can in particular be received in a side guide at least in a partial area between the two rolls, the film also being able to be clamped in the side guide if necessary.
  • the border regions adjoining one another can be guided close to one another or else connected to one another.
  • the film edges must emerge from the common guide or be separated from one another, in particular cut. If necessary, cleaning is carried out outside the work area before the film webs are rolled up. If necessary, however, the film webs are rolled up together with the powder adhering to them.
  • the time required to clean the boundary surfaces of the work space is thus limited to the time required to advance the film webs by the length of the work space.
  • a tubular film surface with a film slot adapted to the ceiling slot.
  • one is placed along each of the bottom and two side surfaces and in the area of the ceiling on both sides of the slot, a film sheet is guided.
  • No foils may be provided in the area of the boundary surfaces with the inlet or outlet opening, so that only these boundary surface areas need to be cleaned when there are color changes. If the entrance and the exit opening can be closed with doors, foil webs that can be pushed forward can also be provided on these doors.
  • a film surface 7 adapted to the size of the working space 2 is bag-shaped and comprises five partial surfaces 8 that can be placed on the boundary surfaces 3 and at least one working opening 13 through which a workpiece and / or a powder -Spray nozzle are feasible.
  • the partial surface 8 that can be placed on the rear boundary surface comprises a suction opening 12 that is adapted to the suction nozzle 11.
  • suction strips 9 are at least on two opposite lateral and on the upper boundary surface 3 in the working space 2 opening suction openings 10 are provided.
  • the Suction strips 9 can be connected to a suction device. If necessary, clamping elements are provided instead of the suction strips 9 for holding the film surface 7, in particular clamping guides running along edges between the boundary surfaces 3.
  • FIGS. 2a, 2b and 2c show a continuous booth 21 with a work space 22.
  • the workpieces are guided through a work axis 22 on the workpiece holders 23 of a transport device through the work space 22.
  • the passage axis 24 leads from an entry side to an exit side 25 or 26.
  • Parallel to the passage axis 24, two lateral boundary surfaces 27, a bottom surface 28 and a two-part ceiling surface 29 are arranged.
  • a ceiling slot 30 is formed between the two ceiling surface parts 29, through which the workpiece holder 23 hangs into the working space 22 from a transport rail (not shown).
  • a film web 27a is provided along the bottom and along two side surfaces and a film web 27a in the area of the ceiling surface on both sides of the slot 30 , 28a and 29a.
  • the film webs 27a, 28a and 29a each extend from a feed film roll 27b, 28b and 29b to a collecting roll 27c, 28c and 29c.
  • the feed film rolls 27b, 28b and 29b and the collecting rolls 27c, 28c and 29c are rotatably mounted outside the working space 22 in roll holders.
  • the film webs 27a, 28a and 29a are deflected via deflection elements 27d, 28d and 29d in such a way that the upper or lower film edge of the lateral film webs 27a adjoins the outer film edge of the top or bottom film webs 29a or 28a.
  • a welding device 33 at each of the four corners of the working space 22 for welding them together adjacent film sheets arranged.
  • a separating or cutting device 34 is arranged accordingly at each of the four corners of the working space 22 for separating or cutting open the interconnected film webs.
  • all the film webs 27a, 28a and 29a are advanced by the length of the working space 22, in that the web sections of this length are wound onto the collecting rollers 27c, 28c and 29c by a common drive.
  • the film webs 27a, 28a and 29a are advanced, the webs adjoining one another are connected to one another in the entry area 25 and separated from one another in the exit area 26.
  • the coating powder that falls off in the exit area 26 when the film webs 27a, 28a and 29a are wound up is collected in a collecting trough 39.
  • suction strips 35 are arranged on these, which make it possible to generate a vacuum with suction openings opening into the working space 22.
  • the suction strips 35 can be connected to a suction device via suction lines 36. It goes without saying that any clamps can also be provided instead of this suction cup. It may also be sufficient if a tensioning force can be achieved between the feed rollers 27b, 28b, 29b and the collecting rollers.
  • the boundary surfaces with the inlet and outlet openings 31 and 32 are formed transversely to the axis of passage 24.
  • sliding doors 37 are slidably mounted in guides 38 transversely to the passage axis 24.
  • holders in particular terminal strips or hanging devices, in order to be able to easily attach pieces of film. Since the doors 37 are easily accessible, manual replacement of these pieces of film would not be particularly time-consuming. In order to enable an automatic color change, the doors 37 could also be covered with automatically advancing film webs.
  • FIG. 3 shows schematically how a cabin according to the invention - corresponding to that of FIG. 2 - is put together.
  • the coating booth 1 comprises a central booth frame 40 to which wall elements 41 are fastened with suction strips 35.
  • a roller holder frame 43 is attached to the cabin frame 40 via connection elements 42.
  • the feed film rolls 27b, 28b, 29b are mounted on one roll holder frame 43 and the collecting rolls 27c, 28c, 29c on the other.
  • a retrofit kit preferably includes connection elements 42 and roll holder frames 43 which are designed to carry the feed film rolls 27b, 28b, 29b or collecting rolls 27c, 28c, 29c.
  • a retrofit kit also includes wall elements 41 with suction strips 35.
  • film surfaces are also possible in existing coating booths by installing film guides and / or film holders.
  • the cabins that are used exclusively with foil surfaces do not need continuous, fixed cabin walls. They can essentially be limited to frame constructions with roll holders and, if necessary, holding elements arranged in between for cooling the film surface.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP96117585A 1996-11-02 1996-11-02 Cabine de poudrage avec doublure intérieur flexible Withdrawn EP0839581A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96117585A EP0839581A1 (fr) 1996-11-02 1996-11-02 Cabine de poudrage avec doublure intérieur flexible

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96117585A EP0839581A1 (fr) 1996-11-02 1996-11-02 Cabine de poudrage avec doublure intérieur flexible

Publications (1)

Publication Number Publication Date
EP0839581A1 true EP0839581A1 (fr) 1998-05-06

Family

ID=8223355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117585A Withdrawn EP0839581A1 (fr) 1996-11-02 1996-11-02 Cabine de poudrage avec doublure intérieur flexible

Country Status (1)

Country Link
EP (1) EP0839581A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704497A1 (de) * 1977-02-03 1978-08-10 Otto Mueller Ohg Maschinen Und Kabine zur oberflaechenbeschichtung von gegenstaenden
DE7822478U1 (de) * 1978-07-24 1979-01-18 Schaad, Hans J., 4600 Dortmund Pulversprühkabine
EP0200681A1 (fr) 1985-04-30 1986-11-05 Ramseier, H.U. Installation de revêtement électrostatique
WO1989002788A1 (fr) * 1987-09-30 1989-04-06 H. Moldow A/S Chambre de traitement et procede servant a empecher la sortie de substances contaminantes de ladite chambre
US4924803A (en) * 1987-05-05 1990-05-15 Lune Powder booth for applying coating powder to articles
US4934308A (en) * 1985-07-29 1990-06-19 Volstatic Limited Improved spray chamber for powder deposition
EP0433589A2 (fr) 1989-12-19 1991-06-26 Wagner International Ag Installation de poudrage électrostatique
US5240504A (en) * 1991-07-03 1993-08-31 Russell Mazakas Spray booth liner
EP0678335A2 (fr) 1994-04-18 1995-10-25 Böllhoff Verfahrenstechnik Gmbh & Co. Kg Cabine de poudrage
EP0701868A1 (fr) 1994-09-16 1996-03-20 Sames S.A. Cabine de revêtement d'objets par projection de matériau pulvérulent et procédés de nettoyage d'une telle cabine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704497A1 (de) * 1977-02-03 1978-08-10 Otto Mueller Ohg Maschinen Und Kabine zur oberflaechenbeschichtung von gegenstaenden
DE7822478U1 (de) * 1978-07-24 1979-01-18 Schaad, Hans J., 4600 Dortmund Pulversprühkabine
EP0200681A1 (fr) 1985-04-30 1986-11-05 Ramseier, H.U. Installation de revêtement électrostatique
US4934308A (en) * 1985-07-29 1990-06-19 Volstatic Limited Improved spray chamber for powder deposition
US4924803A (en) * 1987-05-05 1990-05-15 Lune Powder booth for applying coating powder to articles
WO1989002788A1 (fr) * 1987-09-30 1989-04-06 H. Moldow A/S Chambre de traitement et procede servant a empecher la sortie de substances contaminantes de ladite chambre
EP0433589A2 (fr) 1989-12-19 1991-06-26 Wagner International Ag Installation de poudrage électrostatique
US5240504A (en) * 1991-07-03 1993-08-31 Russell Mazakas Spray booth liner
EP0678335A2 (fr) 1994-04-18 1995-10-25 Böllhoff Verfahrenstechnik Gmbh & Co. Kg Cabine de poudrage
EP0701868A1 (fr) 1994-09-16 1996-03-20 Sames S.A. Cabine de revêtement d'objets par projection de matériau pulvérulent et procédés de nettoyage d'une telle cabine

Similar Documents

Publication Publication Date Title
EP0727258B1 (fr) Dispositif de nettoyage d'un cabine de poudrage
DE3500005A1 (de) Beschichtungskabine zum ueberziehen der oberflaeche von werkstuecken mit beschichtungspulver
CH638698A5 (de) Beschichtungsvorrichtung fuer das elektrostatische auftragen von pulverfoermigen stoffen.
EP0478649B1 (fr) Cabine pour l'enduction d'objets avec un materiau pulverulent
CH670575A5 (fr)
EP1342507A1 (fr) Dispositif pour le revêtement en poudre d'objets
DE4012676A1 (de) Kabine fuer elektrostatische lackierung
WO1990015669A1 (fr) Cabine de revetement d'objets par pulverisation d'enduits pulverulents
DE2823958C2 (de) Verfahren und Vorrichtung zur Spritzbehandlung, insbesondere zum Spritzlackieren von Gegenständen
DE2826118A1 (de) Vorrichtung zum aufbringen von fluessigkeit auf sich bewegendes material
DE3941927C1 (fr)
DE3214290A1 (de) Einrichtung zum oberflaechenbeschichten von gegenstaenden
DE3246574C2 (de) Vorrichtung zur elektrostatischen Spritzlackierung
DE2704497A1 (de) Kabine zur oberflaechenbeschichtung von gegenstaenden
EP0328070B1 (fr) Installation pour le revêtement électrostatique de poudre dans une cabine pouvant recevoir les articles à revêtir
EP0839581A1 (fr) Cabine de poudrage avec doublure intérieur flexible
EP1582267B1 (fr) Appareil et procédé pour nettoyer une cabine de pulvérisation de poudre
EP0563081B1 (fr) Procede pour le nettoyage d'un separateur de gouttelettes et separateur de gouttelettes avec dispositif de nettoyage
WO2005068082A2 (fr) Cabine de pulverisation a poudre
WO2003009945A1 (fr) Dispositif de nettoyage d'une cellule de revetement par poudre
DE19726078B4 (de) Maschine zum Lackieren oder Einfärben von Werkstücken
AT402477B (de) Verfahren zum reinigen einer vliesartigen filtermatte
DE3927980C1 (en) Appts. to remove lint from cleaning installation - has cleaning belt associated with suction nozzle with overflow shuttles
EP0678335A2 (fr) Cabine de poudrage
DE3140454A1 (de) Pulverbeschichtungskabine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

17P Request for examination filed

Effective date: 19981030

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FR GB IT LI SE

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE DK ES FR GB IT LI SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20010601