EP0411098B1 - Farbspritzanlage mit kontrolliertem durchfluss - Google Patents

Farbspritzanlage mit kontrolliertem durchfluss Download PDF

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Publication number
EP0411098B1
EP0411098B1 EP90903378A EP90903378A EP0411098B1 EP 0411098 B1 EP0411098 B1 EP 0411098B1 EP 90903378 A EP90903378 A EP 90903378A EP 90903378 A EP90903378 A EP 90903378A EP 0411098 B1 EP0411098 B1 EP 0411098B1
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EP
European Patent Office
Prior art keywords
coating product
installation according
spraying installation
insulating material
conduits
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Expired - Lifetime
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EP90903378A
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English (en)
French (fr)
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EP0411098A1 (de
Inventor
André Frene
Eric Prus
Caryl Thome
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Sames SA
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Sames SA
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Priority claimed from FR898901821A external-priority patent/FR2642992B2/fr
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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
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1616—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material
    • B05B5/1625—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom
    • B05B5/1633—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom the arrangement comprising several supply lines arranged in parallel, each comprising such an intermediate container
    • 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 an installation for electrostatically spraying a coating product, such as for example a paint or a varnish, at a controlled rate; it proposes improvements making it possible to precisely control the flow rate of said coating product during a spraying phase and the quantity stored, without the elements for circulating the latter or the elements for measuring the flow rate or the quantity stored risk of 'be damaged by said product. It relates more particularly to an installation of this type making it possible to very quickly change the coating product.
  • the flow rate of the coating product feeding the projector is desirable to constantly adapt the flow rate of the coating product feeding the projector, as a function of the surface to be covered per unit of time.
  • the flow rate of coating product must be lower, all other things being equal.
  • the paint flow rate should be able to be changed at will throughout a spraying phase.
  • the amount required to paint a given object may vary depending on the color of the paint.
  • Document EP 0 292 778 also discloses an installation suitable for rapid change of coating product and comprising two parallel branches arranged between a coating product changing unit and the projector connected to a high voltage source, each branch including a intermediate tank into which it is possible to introduce a predetermined quantity of coating product to isolate it from the potential of the earth.
  • the projector is supplied from a selected intermediate tank by applying air pressure to the latter.
  • the invention proposes a globally satisfactory solution with regard to all these problems thanks to the integration of a particular type of intermediate tank in an installation designed to allow very rapid change of coating product, which constitutes a necessity. absolute in certain industrial fields, notably the automobile industry.
  • the invention makes it possible to avoid, in such an installation, bringing the vulnerable control or measurement members into contact with the coating product by placing them in a hydraulic flow control and / or metering circuit associated with each intermediate tank. .
  • the invention therefore relates to a coating product projection installation comprising at least one projector connected to a source of high adjustable or interruptible voltage and placed opposite a location or path for the passage of an object to be coated and intermediate tanks each capable of receiving a predetermined quantity of such a product and connected to supply said projector, comprising two distribution branches of said coating product, composed of conduits made of insulating material and arranged in parallel between a coating product changing unit and said projector and each incorporating an aforementioned intermediate tank, characterized in that each intermediate tank contains a movable or deformable wall separating two adjacent chambers, a coating product chamber inserted into the corresponding branch and an actuation chamber filled with a controllable volume of liquid by being connected to means for supplying a controlled flow of such liquid and in that each actuation chamber is connected to a pump eg via a pipe made of insulating material, said pump being interconnected between this pipe and a tank of insulating actuating liquid.
  • a coating product projection installation comprising at least one projector connected to
  • the installation which has just been defined above is particularly suitable for the case of electrostatic projection of a conductive coating product, such as for example a water-based paint.
  • the installation comprises a coating product change unit 211, known per se, also called a color change unit and at least one electrostatic projector 213 isolated from the ground and connected to a high voltage source 214 adjustable and / or interruptible , likely to be taken out of service outside of product projection periods.
  • a coating product change unit 211 known per se, also called a color change unit
  • at least one electrostatic projector 213 isolated from the ground and connected to a high voltage source 214 adjustable and / or interruptible , likely to be taken out of service outside of product projection periods.
  • the installation comprises two similar distribution branches 200 a , 200 b each incorporating an intermediate tank 212 a , 212 b , respectively. These two branches are arranged in parallel between the coating product change unit 211 and the electrostatic headlamp 213.
  • Each intermediate reservoir 212 a , 212 b includes a coating product chamber 216 a , 216 b with variable volume, inserted between the outlet of the color changing unit 211 and the electrostatic projector 213.
  • the projector 213 is of the known type with a rotating "bowl". It has two nozzles directed towards the rotating part and capable of projecting the coating product into said rotating part. The two nozzles correspond to the two distribution branches mentioned above.
  • Each intermediate reservoir is connected to the color changing unit by means of a conduit 218 a , 218 b made of insulating material and a controlled valve 219 a 219 b situated in the immediate vicinity of the intermediate reservoir and controlling the introduction of the coating product into the corresponding chamber 216 a , 216 b .
  • An outlet from this same chamber is connected to the projector by a controlled valve 220 a , 220 b , located in the immediate vicinity of the corresponding intermediate tank and a conduit made of insulating material 224 a , 224 b .
  • controlled valves 226 a , 226 b are respectively inserted between the conduits 224 a , 224 b and the projector.
  • Another controlled valve 221 a , 221 b is interconnected between each conduit 218 a , 218 b , respectively and a discharge conduit 217 a , 217 b made of insulating material.
  • the valves 221 a , 221 b are close to the valves 219 a , 219 b , respectively.
  • These two evacuation conduits open into a common conduit connected to purge means 222 connected to the ground.
  • the valves 226 a , 226 b are in the immediate vicinity of the projector and mounted on the same block 227 as the projector isolated from the ground.
  • each conduit 224 a , 224 b , connected to the valve 226 a , 226 b is also connected to the purge means 222 via a controlled valve 228 a , 228 b carried by the block 227 and a conduit made of insulating material 229 a , 229 b , respectively.
  • These two conduits meet in a common conduit 229 connected to the purge means 222 mentioned above.
  • the two intermediate tanks 212 a , 212 b are part of a set 230, here installed at a fixed station, electrically isolated from the ground. The two intermediate tanks are also isolated from each other.
  • Valves 219, 220 and 221 are also part of this isolated assembly as well as injection valves of cleaning product 232 a , 232 b , ordered.
  • the valves 232 a (here two in number) associated with the tank 212 a have their inputs interconnected and supplied in common by a cleaning unit 234 a (external and connected to the ground) via a conduit made of insulating material 233 a .
  • the valves 232 b associated with the intermediate tank 212 b have their inputs interconnected and supplied in common by a cleaning unit 234 b , via a conduit made of insulating material 233 b .
  • valves 232 are respectively connected to injectors (not visible in the diagram) opening into the corresponding coating product chamber 216 at locations and according to chosen orientations. Each of these valves thus interposed between a cleaning unit 234 a or 234 b and an injector, is here directly mounted on the side of the case of the intermediate tank, in the immediate vicinity of the corresponding injector.
  • a discharge valve 223 a , 223 b is connected between the chamber 216 a , 216 b and the discharge conduit 217 a , 217 b , respectively.
  • a bypass valve 225 a , 225 b is connected between the common inlets of the valves 232 a , 232 b and the discharge conduit 217 a , 217 b , respectively.
  • Each cleaning unit 234 a , 234 b and others which will be mentioned later, comprises controlled connection means, constituted here by valves 240, 241, able to put successively and sequentially in communication with the chamber 216 (via the conduit 233) either a circuit for circulation of cleaning product 242, under pressure, or a circuit for distributing compressed air 243.
  • the cleaning product can be water with alcohol added.
  • Each intermediate reservoir 212 a , 212 b contains a movable wall constituted by a deformable membrane 245 a , 245 b in the form of a disc, dividing the internal space of the intermediate reservoir into two adjacent chambers, the coating product chamber 216 a , 216 b with which communicate the valves 219, 220, 223 and 232 and an actuation chamber 246 a , 246 b , respectively, whose role will be analyzed below.
  • the chambers 216 and 246 each have the shape of a spherical cap when the membrane is in its middle position in the absence of stress, as shown in the drawing.
  • the radius of curvature of the fixed wall of each chamber is determined so that the membrane can be applied against this wall, if necessary, and thus reduce the volume of said chamber to a practically zero residual value.
  • the two injectors are substantially diametrically opposite and open into the chamber 216, along the perimeter of the membrane and close to the latter. They can be oriented approximately tangentially. Their role is to create swirling movements of air and / or cleaning product in chamber 216 to obtain rapid and effective cleaning.
  • a controlled valve 231 a , 231 b , located in the vicinity of the valve 220 a , 220 b is connected between the conduit 224 a , 224 b and a cleaning unit 235 a , 235 b via a conduit 237 a , 237 b made of material insulator, respectively.
  • the projector 213 is capable of being put in communication by a controlled valve 248 a and a conduit 249 a of insulating material with a cleaning unit 250 a .
  • the valve 248 a is connected to the outlet of the valve 226 a and in the immediate vicinity thereof.
  • the projector 213 is capable of being put in communication, by a controlled valve 248 b and a conduit 249 b made of insulating material with a cleaning unit 250 b .
  • the valve 248 b is connected to the outlet of the valve 226 b and in the immediate vicinity thereof.
  • the valves 248 a , 248 b are carried by the insulating block 227.
  • the cleaning units 250 a , 250 b are therefore more specifically responsible for cleaning the headlight 213, alternately, during successive color change cycles.
  • Controlled drying valves 238 a , 238 b are interconnected between the compressed air distribution circuit 243 and each of the outputs of the three-way valve 215, respectively.
  • At least one of the conduits made of insulating material connecting the color changing unit 211 or a cleaning unit 234, 235, 250, to the insulated assembly 230 comprises a section S shaped as a serpentine.
  • a serpentine section is provided on each of these conduits 218, 233, 237 and 249.
  • Similar serpentine sections S are provided on the conduits 217 and 229 returning to the purging means 222 and on the conduits 224 connecting the intermediate tanks to the projector.
  • Each coil S is preferably oriented so that its axis is substantially horizontal. This prevents the formation of a continuous film of liquid inside the conduit when it is not full.
  • the electrical "path” is thus cut at each turn and the droplets of residual liquid are "trapped” while waiting for their complete evaporation in the substantially horizontal parts of the coil.
  • means are provided for permanently blowing air into the aforementioned insulating material conduits, for at least part of the time during which the high voltage is applied to one or other of the branches of distribution 200 a , 200 b , via the projector 213, brought to high voltage and the conductive coating product. This is done by leaving some of the valves described above open to let air circulate in these conduits between the air distribution circuit 243 and the purge means 222.
  • the actuating chamber 246 a , 246 b of each intermediate reservoir 212 a , 212 b is filled with a variable volume of actuating liquid by means of supply means with controlled flow 260.
  • supply means include a reservoir 258 for storing actuating liquid 257, a pump 261 connected between this reservoir and the inlet of a three-way valve 264 and two pipes made of insulating material 259 a , 259 b connected respectively to each of the outlets of the three-way valve 264.
  • These two conduits open respectively into the actuation chambers 246 a , 246 b .
  • Flow sensors 262 a , 262 b are respectively inserted into the conduits 259 a , 259 b .
  • the pump 261 is also preferably a positive displacement pump such as for example a gear pump. It is driven by a self-piloting synchronous motor M and protected against overpressure by a limiter 280.
  • Return valves 266 a , 266 b controlled are respectively interconnected between each of the outputs of the three-way valve 264 and the tank 258.
  • the elements of the supply means 260 are grounded as is the reservoir 258.
  • the liquid 257 is an Newtonian insulating liquid, such as oil, so that no particular precaution is to be taken with regard to relates to the electrical insulation between said supply means, the reservoir 258 and the intermediate reservoirs 212.
  • the installation also includes means for controlling the flow of liquid when it flows to one or other of the chambers 246 a , 246 b .
  • control means include the sensors 262 a , 262 b and control the pump 261. They include transducers 268 a , 268 b coupled respectively to the sensors 262 a , 262 b and deliver usable electrical signals, a comparator 269 and a computer 270. The setpoint signal of the comparator is produced by the computer. The output of the comparator 269 is applied to a motor control input M which drives the pump 261. The signals delivered by the sensors 262 a , 262 b are alternately selected by the computer and applied to the comparator 269.
  • the flow sensors 262 a , 262 b can be used regardless of the direction of circulation of the actuating liquid in the conduits 259 a , 259 b , respectively.
  • the sensor In a direction corresponding to the filling of a chamber 246, the sensor is part of the chain for controlling the pump flow. In the other direction of circulation, it only measures the quantity of liquid returning to the reservoir 258, which makes it possible to know at any time the volume of coating product introduced into the corresponding chamber 216.
  • the computer 270 also controls the sequencing of all the valves of the installation and selects the transducer 268 a , 268 b depending on whether it is to fill the actuation chamber 246 a or 246 b .
  • the computer 270 can contain and / or receive all the data making it possible to determine the law of variation of the flow rate of the coating product when it is discharged towards the projector 213, by acting on the filling of the actuation chamber 246 a , 246 b corresponding.
  • the computer controls the filling of the chamber 216 a , 216 b by controlling the opening of the valve 266 a , 266 b of the valve 210 and of the valve 219 a , 219 b corresponding as well as the positioning of the three-way valve 264 and by controlling the quantity of coating product introduced into a chamber 216 by measuring the quantity of actuating liquid returning to the reservoir.
  • the computer 270 is programmed to control the sequencing of all the valves according to a sequence which will now be described.
  • the projector 213 is supplied with coating product contained in the intermediate tank 212 b .
  • the valves 232 b , 219 b and 223 b are closed.
  • Valves 220 b and 226 b are open.
  • the pump 261 delivers actuating liquid into the conduit 259 b via the three-way valve 264 and the flow sensor 262 b .
  • the coating product is therefore discharged into the duct 224 b and the actuation chamber 246 b is filled with actuation liquid.
  • the coating product is therefore applied by the electrostatic headlamp 213 brought to high voltage.
  • another coating product supplied by the coating product changing unit 211 passes through the three-way valve 215 and flows into the conduit 218 a .
  • the coating material is introduced into the chamber 216 through the valve 219 has opened.
  • the actuating liquid is expelled from the chamber 246 a and returns to the reservoir 258 by passing through the flow sensor 262 a and the valve 266 a .
  • the insulation is maintained in the duct 218 b by an air circulation flowing from the valve 238 b , open, to the purge means 222, the valve 221 b being open.
  • the valve 219 a is closed and the cleaning product then air circulate in the conduit 218 a , from the coating product change unit to the purge means 222, the valve 221 a being open.
  • the cleaning of the duct 224 b is carried out simultaneously from the cleaning unit 235 b , the cleaning product and the air flowing successively through the duct 237 b and the valve 231 b , the valve 228 b being open towards the means of purging.
  • it begins to circulate new coating product through the conduit 224 a by introducing actuating liquid into the chamber 246 a , the valve 226 a being open and the two valves 248 a and 228 a being closed.
  • the spraying of the new coating product can immediately start, the duct 218 a being kept isolated by an air circulation through the valves 238 a and 221 a , the valve 219 a being closed.
  • the intermediate tank 212 b now isolated from the high voltage, is cleaned. This cleaning is done from the cleaning unit 234 b , the valves 232 b and 223 b being the only ones open to allow the circulation of cleaning product and air, alternately.
  • a new coating product is introduced into the intermediate tank 212 b .
  • This coating product flows from the coating changing unit 211, passes through the three-way valve 215 and the conduit 218 b , the valve 219 b being open.
  • the actuating liquid is discharged to the reservoir 258 via the conduit 259 b , the flow sensor 252 b and the valve 266 b.
  • the computer controls the closing of the valve 266 b , of the valve 219 b and of the valve 210 corresponding.
  • the intermediate tank 212 b is then full and ready for a new use.
  • the duct 218 b begins to be cleaned from the coating product change unit 211, the valve 221 b being open.
  • the high voltage is cut off and cleaning of the projector is started through the conduit 249 a and cleaning of the conduit 224 a from the cleaning unit 235 a .
  • Actuating liquid is injected into chamber 246 b of the intermediate reservoir 212 b to prime the discharge of the new coating product to the projector.
  • the valves 248 a and 228 a are then closed and the projector 213 is ready to paint a new object from a coating product coming from the intermediate tank 212 b .
  • the same operations are then repeated in the same order indicated above.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Spray Control Apparatus (AREA)

Claims (16)

  1. Anlage zum Aufsprühen eines Beschichtungsproduktes mit mindestens einem Sprühgerät (213), das mit einer regelbaren oder abschaltbaren Hochspannungsquelle (214) verbunden ist und das gegenüber einem Ort, an dem sich ein zu beschichtender Gegenstand befindet, oder gegenüber einer Förderbahn für den zu beschichtenden Gegenstand angeordnet ist, mit Zwischenbehältern (212a, 212b), die jeweils eine festgelegte Menge eines derartigen Produktes aufnehmen können und angeschlossen sind, um das Sprühgerät zu versorgen, und mit zwei aus Leitungen aus isolierendem Material zusammengesetzten Zweigen (200a, 200b) zur Verteilung des Beschichtungsproduktes, die parallel zueinander zwischen einer Einheit (211) zum Wechsel des Beschichtungsproduktes und dem Sprühgerät (213) angeordnet sind und jeweils einen Zwischenbehälter umfassen, dadurch gekennzeichnet, daß jeder Zwischenbehälter eine bewegliche oder verformbare Wand (245a, 245b) enthält, die zwei benachbarte Kammern, eine in dem entsprechenden Zweig befindliche Beschichtungsproduktkammer und eine Betätigungskammer (246a, 246b), die dadurch mit einem kontrollierbaren Volumen an Flüssigkeit (257) gefüllt ist, daß sie an eine Versorgungseinrichtung (260) mit kontrolliertem Durchfluß einer derartigen Flüssigkeit angeschlossen ist, voneinander trennt, und daß jede Betätigungskammer (246a, 246b) über eine Leitung aus isolierendem Material (259a, 259b) mit einer Pumpe (261) verbunden ist, wobei die Pumpe zwischen diese Leitung und einen Behälter für eine isolierende Betätigungsflüssigkeit geschaltet ist.
  2. Anlage zum Aufsprühen eines Beschichtungsproduktes nach Anspruch 1, dadurch gekennzeichnet, daß ein Beschichtungsproduktauslaß jedes Zwischenbehälters (212) über eine eigene Leitung (224a, 224b) aus isolierendem Material über gesteuerte Ventile (220a, 220b; 226a, 226b), die in der Nähe des Zwischenbehälters bzw. in der Nähe des Sprühgerätes angeordnet sind, mit den Sprühgerät verbunden ist.
  3. Anlage zum Aufsprühen eines Beschichtungsproduktes nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Pumpe über zwei Leitungen aus jeweils isolierendem Material und einen Wahlschieber (264) mit den zwei Betätigungskammern (246a, 246b) verbunden ist.
  4. Anlage zum Aufsprühen eines Beschichtungsproduktes nach Anspruch 3, dadurch gekennzeichnet, daß der Wahlschieber (264) ein 3-Wege-Ventil ist, dessen zwei Ausgänge jeweils mit den Leitungen (259a, 259b) verbunden sind.
  5. Anlage zum Aufsprühen eines Beschichtungsproduktes nach Anspruch 4, dadurch gekennzeichnet, daß in diese zwei Leitungen (259a, 259b) jeweils Durchflußmesser (262a, 262b) eingefügt sind, und daß sie des weiteren eine diese Durchflußmesser umfassende Einrichtung zur Regelung der Pumpe (261) aufweist.
  6. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß zwischen diese Leitungen (259a, 259b) und den Betätigungsflüssigkeitsbehälter (258) gesteuerte Rücklaufventile (266a, 266b) geschaltet sind.
  7. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Pumpe (261) eine Verdrängerpumpe, insbesondere eine Zahnradpumpe ist, die von einem von der Regelungseinrichtung gesteuerten Motor angetrieben ist.
  8. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie Reinigungseinheiten (235a, 235b) umfaßt, die jeweils über entsprechende Leitungen (237a, 237b) aus isolierendem Material mit den Leitungen (224a, 224b) verbunden sind, die die Ausgänge der Zwischenbehälter mit dem Sprühgerät verbinden, wobei die Verbindungen von gesteuerten Ventilen in der Nähe der Ausgänge der Zwischenbehälter hergestellt werden.
  9. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie Reinigungseinheiten (234a, 234b) aufweist, die jeweils über entsprechende Leitungen (233a, 233b) aus isolierendem Material über in der Nähe der Zwischenbehälter angeordnete gesteuerte Ventile (232a, 232b) mit den Beschichtungsproduktkammern (216a, 216b) verbunden sind.
  10. Anlage zum Aufsprühen eines Beschichtungsproduktes nach Anspruch 9, dadurch gekennzeichnet, daß diese Ventile (232a, 232b) jeweils mit Injektoren verbunden sind, die an bestimmten Stellen und in bestimmten Richtungen in die entsprechende Beschichtungsproduktkammer (216a, 216b) münden.
  11. Anlage zum Aufsprühen eines Beschichtungsproduktes nach Anspruch 10, dadurch gekennzeichnet, daß jedes dieser Ventile direkt an der Seite des entsprechenden Zwischenbehältergehäuses in unmittelbarer Nähe des entsprechenden Injektors angebracht ist.
  12. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie Reinigungseinheiten (250a, 250b) aufweist, die jeweils durch entsprechende Leitungen (249a, 249b) aus isolierendem Material über in der Nähe des Sprühgerätes angeordnete, gesteuerte Ventile (248a, 248b) mit dem Spritzgerät verbunden sind.
  13. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Ablaßleitung (217a, 217b) aus isolierendem Material einen entsprechenden Zwischenbehälter über ein entsprechendes Ablaßventil (223a, 223b) mit einer geerdeten Entleerungseinheit (222) verbindet.
  14. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der Ansprüche 1, 2, 8, 9, 12 oder 13, dadurch gekennzeichnet, daß mindestens eine der Leitungen aus isolierendem Material einen schlangenförmig ausgebildeten Abschnitt (S) umfaßt, dessen Achse vorzugsweise im wesentlichen horizontal ausgerichtet ist.
  15. Anlage zum Aufsprühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie eine Einrichtung zum Blasen von Luft durch die Leitungen aus isolierendem Material während mindestens eines Teils der Zeit aufweist, während der die Hochspannung an das Sprühgerät angelegt ist.
  16. Anlage zum Aufspühen eines Beschichtungsproduktes nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die bewegliche Wand jedes Zwischenbehälters eine verformbare Membran (245a, 245b) ist.
EP90903378A 1989-02-13 1990-02-12 Farbspritzanlage mit kontrolliertem durchfluss Expired - Lifetime EP0411098B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR898901821A FR2642992B2 (fr) 1988-09-07 1989-02-13 Installation de projection de produit de revetement a debit controle
FR8901821 1989-02-13

Publications (2)

Publication Number Publication Date
EP0411098A1 EP0411098A1 (de) 1991-02-06
EP0411098B1 true EP0411098B1 (de) 1993-09-29

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EP90903378A Expired - Lifetime EP0411098B1 (de) 1989-02-13 1990-02-12 Farbspritzanlage mit kontrolliertem durchfluss

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US (1) US5106024A (de)
EP (1) EP0411098B1 (de)
DE (1) DE69003621T2 (de)
WO (1) WO1990009244A1 (de)

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FR2677611A1 (fr) * 1991-06-11 1992-12-18 Sames Sa Reservoir a capacite ajustable, pour produit liquide.
US5288525A (en) * 1992-03-24 1994-02-22 Binks Manufacturing Company Method of and system for delivering conductive coating material to electrostatic spraying apparatus
AU666116B2 (en) * 1992-05-15 1996-02-01 Abb Trallfa Robot A/S Paint dosage device for program controlled spray painting system
CA2185940C (en) * 1995-11-20 2000-07-18 Shuuji Minoura Electrostatic coating method and apparatus
DE20017630U1 (de) * 1999-12-20 2001-03-22 Tevkür, Talip, 13585 Berlin Farbspritzpistole
DE10233006B4 (de) 2002-07-20 2007-07-05 Eisenmann Lacktechnik Gmbh & Co. Kg Verfahren zur Versorgung einer Lackapplikationseinrichtung mit Lack
JP5936977B2 (ja) * 2012-10-01 2016-06-22 本田技研工業株式会社 静電塗装装置
CN106163673B (zh) * 2014-03-25 2018-11-13 本田技研工业株式会社 静电涂装装置

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GB1478853A (en) * 1973-11-26 1977-07-06 Ici Ltd Apparatus for spraying paint
DE3440381A1 (de) * 1984-11-05 1986-05-07 Ransburg Gmbh, 6056 Heusenstamm Verfahren und vorrichtung zum automatischen elektrostatischen spruehbeschichten
US4728034A (en) * 1986-02-06 1988-03-01 Trinity Industrial Corporation Cleaning device upon color-change in an electrostatic mutli-color coating apparatus
JPH0673651B2 (ja) * 1986-10-31 1994-09-21 トリニテイ工業株式会社 塗布剤供給装置
DE3725172A1 (de) * 1987-05-27 1989-02-09 Behr Industrieanlagen Verfahren und anlage zum elektrostatischen beschichten mit leitfaehigem material
DE3865392D1 (de) * 1987-08-14 1991-11-14 Sames Sa Farbspritzanlage fuer beschichtungsprodukte, zum beispiel fuer wasserloesliche farbe.

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DE69003621T2 (de) 1994-05-11
EP0411098A1 (de) 1991-02-06
DE69003621D1 (de) 1993-11-04
WO1990009244A1 (fr) 1990-08-23
US5106024A (en) 1992-04-21

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