EP0375511A1 - Verfahren und Vorrichtung zum Aufbringen eines Beschichtungsproduktes - Google Patents

Verfahren und Vorrichtung zum Aufbringen eines Beschichtungsproduktes Download PDF

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Publication number
EP0375511A1
EP0375511A1 EP89403465A EP89403465A EP0375511A1 EP 0375511 A1 EP0375511 A1 EP 0375511A1 EP 89403465 A EP89403465 A EP 89403465A EP 89403465 A EP89403465 A EP 89403465A EP 0375511 A1 EP0375511 A1 EP 0375511A1
Authority
EP
European Patent Office
Prior art keywords
enclosure
coating product
frame
installation according
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89403465A
Other languages
English (en)
French (fr)
Other versions
EP0375511B1 (de
Inventor
Michel Gondrand
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.)
Sames SA
Original Assignee
Sames SA
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 Sames SA filed Critical Sames SA
Publication of EP0375511A1 publication Critical patent/EP0375511A1/de
Application granted granted Critical
Publication of EP0375511B1 publication Critical patent/EP0375511B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/90—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

Definitions

  • the invention relates to a method of applying a coating product such as in particular a hot-melt paint powder; it relates more particularly to an improvement making it possible to reduce the time necessary to change the coating product, that is to say most often to effect a change in color of the coating product, applied electrostatically.
  • a coating product such as in particular a hot-melt paint powder
  • the invention also relates to an installation for implementing the method.
  • the plastic sheets are passed between the rollers and the frame so as to have a clean internal surface.
  • the internal framework must be cleaned manually before unwinding of the plastic sheets and during the movement of the latter, the framework can be again soiled with powder deposited on the walls, which can then constitute a source of pollution of clean walls.
  • the solution is therefore not entirely satisfactory and it presupposes the use of complex mechanical means.
  • the operation is expensive, due to a certain consumption of plastic film and its implementation is delicate.
  • the invention provides a more economical solution and allows very rapid implementation.
  • the invention follows from the analysis according to which it is practically impossible to prevent by simple means the deposition of a part of the powder sprayed on the internal walls of the enclosure and that, on the other hand, any cleaning of the walls requires a long intervention (which therefore makes the installation unusable for a significant time) and the result of which is uncertain.
  • the basic idea of the invention therefore consists in purely and simply removing the enclosure at each change of coating product and replacing it with another, corresponding to the new coating product.
  • the invention therefore relates to a method of applying a coating product, in particular a powder, to objects to be covered, consisting in passing such objects through an enclosure and in projecting such a coating product.
  • a coating product in particular a powder
  • characteristics given to the objects during their passage through said enclosure characterized in that, an enclosure corresponding to a given coating product being detachably fixed to an external frame, a change of coating product comprises the operations consisting in depositing the enclosure in place and replace it with another enclosure corresponding to a new coating product chosen.
  • the enclosures are made of flexible material so that they can be folded up and stored in a minimum space.
  • the enclosure is deployed and takes its shape when it is attached to said frame, by external attachment means such as flexible links, possibly elastic.
  • the invention also relates to an installation for applying a coating product, characterized in that it comprises an external fixed frame and a plurality of enclosures, each enclosure being shaped and dimensioned so as to be able to be placed in said frame and attached to it to be supported by it.
  • the installation shown comprises a rigid, load-bearing frame 1 and an enclosure 2 made of flexible material, here made of plastic material such as polyethylene, deployed inside said frame and supported by it .
  • the installation comprises a plurality of enclosures 2, the other enclosures each corresponding to a particular coating product, being folded and stored while waiting to be used in place of the enclosure attached to said fixed frame 1.
  • This has approximately the shape of a rectangular parallelepiped materialized by an assembly of vertical uprights 1 a and horizontal crosspieces 1 b .
  • These elements are advantageously made of insulating material or covered with a thick layer of insulating material.
  • each enclosure When deployed, each enclosure has a shape similar to that of the frame, but of smaller dimensions and the enclosure in use is connected to the frame by flexible links 3, in this case here elastic tensioners .
  • These tensioners are provided with hooks 3 a which cooperate with connection rings 3 b defined or attached to selected points of the enclosure, in particular at its ends.
  • the enclosure 2 is constituted by panels of flexible plastic material assembled together edge to edge, for example by welding.
  • the enclosure is made up of four substantially vertical faces 2 a , 2 b , 2 c , 2 d , of two slightly inclined upper faces 2 e , 2 f and of four inclined lower faces 2 g , 2 h , 2 i , 2 d forming a hopper 10 terminated by a circular opening. Furthermore, the enclosure is provided with a wide opening 4 extending on the one hand, over its entire upper part between the faces 2 e and 2 f and extending by vertical notches on the opposite vertical faces 2 b and 2 c . This opening 4 allows the passage in translation of the objects 8 to be covered suspended from an overhead conveyor 9. The latter is arranged for transport the objects from one end to the other of the enclosure through the opening 4. This conveyor is moreover connected to the ground.
  • At least one other opening 5 is made, here in the face 2 d of the enclosure, for the passage of an electrostatic projection device 6 carried by a back-and-forth mechanism 7, located outside and which moves it vertically so that the powder jet sweeps the entire height of the objects 8 to be covered.
  • the opening 5 can simply consist of a simple slot cut on demand.
  • the cut parts can advantageously form lips for partially closing the opening 5.
  • the projection apparatus 6 is supplied with fluidized powder by a conduit 11 which is connected to a powder reservoir 12 in which the powder is kept at the fluidized state.
  • This tank is conventional and is not part of the invention. It is mounted on casters 15 so that it can be easily moved and changed when the user decides to change the coating product.
  • An electric generator 16 attached to the mechanism 7 supplies the projection apparatus 6 with electric energy by means of an electric cable 17.
  • the lower opening of the hopper 10 is connected by a quick-clamping collar 21 at the end of a conduit 19 connected to suction means not shown but conventional.
  • suction means include in particular a centrifugal separator or "cyclone".
  • the end of the duct 19 is fixed to the lower part of the frame by guy wires 20 or the like extending between the uprights of said frame and the end of the duct.
  • These guys 20 advantageously constitute a horizontal support which can be used for the folding operations of the enclosure after its use.
  • the enclosure is avoided to be cleaned at each change of coating product and the enclosure in use is replaced by another corresponding to the new coating product.
  • the coating products differ only in their color, the installation will include as many foldable speakers as there are colors.
  • Powder spraying is stopped and the mechanism 7 is immobilized in the low position.
  • the conduit 11 is disconnected from the reservoir 12 and clean air is injected therein to clean both the conduit 11 and the projection apparatus 6.
  • the enclosure 2 is shaken manually to drop most of the powder covering the walls in the hopper so that this powder is entrained towards the separator.
  • the elastic tensioners 3 are then lifted, starting from the top, which allows the enclosure to be folded over the shrouds 20.
  • the collar 21 is then opened, which completely frees the enclosure.
  • the separator is then cleaned; these operations are conventional.
  • the installation is then ready to receive another enclosure 2 corresponding to the new coating product contained in another powder reservoir 12.
  • the mounting of the new enclosure is carried out by a succession of reverse operations to those which have been described below. above.
  • the material making the enclosure will preferably be an insulating material, in order to limit the amount of powder deposited on the walls.
  • the quantity of powder liable to ignite will be relatively small and will give off little heat.
  • the use of thin and flexible sheets also increases safety in the event of ignition of the powder because the pressure cannot rise in the enclosure due to the deformation of the walls. This eliminates any risk of explosion of said enclosure.
  • the internal faces of the enclosure are at least partially conductive, for example weakly metallized, and connected to the ground.
  • the material used to make the enclosure can advantageously be translucent or transparent. This can be used to place a photoelectric flame detection cell 25 or similar means outside the enclosure, preferably facing a wall of this enclosure little exposed to the coating product. Thus, the cell can be placed opposite the wall 2 e or 2 f . It should be noted that this cell, which was conventionally placed inside the enclosure, was often covered with powder and poorly fulfilled its function.
  • enclosures of different shapes corresponding to different objects to be covered provided that the enclosures can be mounted inside the same frame with the anchoring points and the necessary attachment means.
  • FIG. 2 illustrates a variant of the enclosure provided with extensions extending laterally and / or at its upper part to form sorts of "airlocks". It is thus possible to limit the turbulence in the projection area and the leakage of powder particles in the room.
  • the external frame has not been shown but it is clear that the shape of this frame is adapted to the new shape of the enclosure. This breaks down into a projection chamber 30 and into two lateral chambers forming entry and exit "locks", 31, 32, which thus extend the lateral ends of the opening 4 shown in the embodiment of Figure 1.
  • the upper part of this opening, for the passage of object supports, is also extended upwards by a longitudinal "airlock" 33.
  • the lower parts of "airlocks 31 and 32 meet at the hopper.
  • the projection chamber 30 has an opening 35 allowing access for the operator handling, here, a manual projector.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Catching Or Destruction (AREA)
EP89403465A 1988-12-21 1989-12-13 Verfahren und Vorrichtung zum Aufbringen eines Beschichtungsproduktes Expired - Lifetime EP0375511B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816912A FR2640526B1 (fr) 1988-12-21 1988-12-21 Procede et installation d'application d'un produit de revetement
FR8816912 1988-12-21

Publications (2)

Publication Number Publication Date
EP0375511A1 true EP0375511A1 (de) 1990-06-27
EP0375511B1 EP0375511B1 (de) 1993-07-21

Family

ID=9373238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403465A Expired - Lifetime EP0375511B1 (de) 1988-12-21 1989-12-13 Verfahren und Vorrichtung zum Aufbringen eines Beschichtungsproduktes

Country Status (6)

Country Link
US (1) US5149373A (de)
EP (1) EP0375511B1 (de)
CA (1) CA2002112A1 (de)
ES (1) ES2015843T3 (de)
FR (1) FR2640526B1 (de)
PT (1) PT92635B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014509A1 (en) * 1990-03-19 1991-10-03 Eric Von Gertten Ab A device for spray painting and similar treatment of objects
EP0520398A1 (de) * 1991-06-27 1992-12-30 Ransburg Corporation Pulverbeschichtungskabine
EP0611605A1 (de) * 1993-02-13 1994-08-24 Roger Walter Britton Beschichtungssystem
ITUB20152198A1 (it) * 2015-07-15 2017-01-15 Siver S R L Cabina di verniciatura

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656025B1 (fr) * 1989-12-18 1996-05-24 Costa Sa Abri anti-poussieres.
US5240504A (en) * 1991-07-03 1993-08-31 Russell Mazakas Spray booth liner
IT1257689B (it) * 1992-11-20 1996-02-01 Impianto di verniciatura a polveri con cabina a sezione variabile
DE29521972U1 (de) * 1994-10-24 1998-12-24 Kraemer Erich Pulverbeschichtungskabine
WO1996020792A1 (de) * 1995-01-07 1996-07-11 Peter Weigert Transportable farbspritzkabine in form eines zelts
DE19837878A1 (de) * 1998-08-20 2000-02-24 Matthias Kraemer Behandlungsanlage
US20110033607A1 (en) * 2003-07-17 2011-02-10 Enamelite, Llc Aerosolized fingerprint powder compositions
DE102006058350A1 (de) * 2006-12-11 2008-06-12 Dürr Systems GmbH Beschichtungsanlage und Verfahren zur Serienbeschichtung von Werkstücken
CN105618314B (zh) * 2016-03-16 2017-11-10 沙洲职业工学院 一种可调式t型导轨自动喷油机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459082A1 (fr) * 1979-06-21 1981-01-09 Hebert Jean Claude Enceintes autonettoyantes pour poudrage
GB2141642A (en) * 1983-03-16 1985-01-03 Ferdinando Trevisan A powder coating spray booth
US4770088A (en) * 1987-02-27 1988-09-13 Specified Equipment Systems Co., Inc. Moveable spray enclosure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095412A5 (de) * 1970-03-02 1972-02-11 Berce Jacques
US3942420A (en) * 1974-05-06 1976-03-09 Interrad Corporation Spray booth for electrostatic powder coating
FR2442080A1 (fr) * 1978-11-21 1980-06-20 Europ Equip Menager Installation de poudrage electrostatique d'objets
NZ216906A (en) * 1985-07-29 1987-08-31 Volstatic Ltd Spray paint booth for applying powders to sheet materials
US4760951A (en) * 1986-08-06 1988-08-02 Quad Research Inc. Disposable spray hood

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459082A1 (fr) * 1979-06-21 1981-01-09 Hebert Jean Claude Enceintes autonettoyantes pour poudrage
GB2141642A (en) * 1983-03-16 1985-01-03 Ferdinando Trevisan A powder coating spray booth
US4770088A (en) * 1987-02-27 1988-09-13 Specified Equipment Systems Co., Inc. Moveable spray enclosure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014509A1 (en) * 1990-03-19 1991-10-03 Eric Von Gertten Ab A device for spray painting and similar treatment of objects
EP0520398A1 (de) * 1991-06-27 1992-12-30 Ransburg Corporation Pulverbeschichtungskabine
US5259879A (en) * 1991-06-27 1993-11-09 Ransburg Corporation Powder application booth liner and method of making it
EP0611605A1 (de) * 1993-02-13 1994-08-24 Roger Walter Britton Beschichtungssystem
ITUB20152198A1 (it) * 2015-07-15 2017-01-15 Siver S R L Cabina di verniciatura

Also Published As

Publication number Publication date
ES2015843T3 (es) 1993-12-16
ES2015843A4 (es) 1990-09-16
CA2002112A1 (fr) 1990-06-21
PT92635A (pt) 1990-06-29
FR2640526B1 (fr) 1991-04-05
FR2640526A1 (fr) 1990-06-22
EP0375511B1 (de) 1993-07-21
PT92635B (pt) 1995-09-12
US5149373A (en) 1992-09-22

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