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EP3523053B1 - Dispositif de revêtement et méthode de revêtement correspondante - Google Patents

Dispositif de revêtement et méthode de revêtement correspondante Download PDF

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Publication number
EP3523053B1
EP3523053B1 EP17808445.5A EP17808445A EP3523053B1 EP 3523053 B1 EP3523053 B1 EP 3523053B1 EP 17808445 A EP17808445 A EP 17808445A EP 3523053 B1 EP3523053 B1 EP 3523053B1
Authority
EP
European Patent Office
Prior art keywords
coating
coating agent
filter
nozzle
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17808445.5A
Other languages
German (de)
English (en)
Other versions
EP3523053A1 (fr
Inventor
Hans-Georg Fritz
Benjamin WÖHR
Marcus Kleiner
Moritz BUBEK
Timo Beyl
Frank Herre
Steffen Sotzny
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
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 Duerr Systems AG filed Critical Duerr Systems AG
Priority to EP20164222.0A priority Critical patent/EP3689474B1/fr
Priority to PL17808445T priority patent/PL3523053T3/pl
Publication of EP3523053A1 publication Critical patent/EP3523053A1/fr
Application granted granted Critical
Publication of EP3523053B1 publication Critical patent/EP3523053B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/082—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to a condition of the discharged jet or spray, e.g. to jet shape, spray pattern or droplet size
    • 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
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/40—Filters located upstream of the spraying outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/531—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using backflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • B41J2/2142—Detection of malfunctioning nozzles
    • 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
    • B05B12/149—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 characterised by colour change manifolds or valves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids

Definitions

  • the invention relates to a coating device for coating components with a coating agent, in particular for painting motor vehicle body components. Furthermore, the invention relates to an associated operating method for such a coating device.
  • rotary atomizers are usually used as the application device, but they have the disadvantage of a limited application efficiency, i.e. only part of the applied paint is deposited on the components to be coated, while the rest of the applied paint has to be disposed of as a so-called overspray.
  • printheads as application devices, for example DE 10 2013 002 412 A1 , US 9 108 424 B2 and DE 10 2010 019 612 A1 are known.
  • print heads do not emit a spray of the paint to be applied, but rather a spatially narrowly defined paint jet which is almost completely deposited on the component to be painted, so that almost no overspray is produced.
  • Such printheads generally have nozzles with a very small nozzle diameter of less than 500 ⁇ m or even less than 100 ⁇ m.
  • such small nozzles can easily clog or even completely clog up during operation.
  • individual paint particles can initially be deposited in the nozzle, which initially only negatively influence the otherwise laminar flow of coating agent, for example by causing turbulence. If the paint particles are deposited further, the nozzle may clog completely.
  • the object of the invention is therefore to create a solution to the problem of complete or partial clogging.
  • the coating device according to the invention serves for coating components with a coating agent, in particular for painting motor vehicle body components.
  • the components to be coated therefore do not necessarily have to be motor vehicle body components. Rather, the coating device according to the invention can also be used to coat other types of components.
  • the coating agent is preferably a lacquer, such as a basecoat, a clear lacquer, a water-based lacquer or a solvent-based lacquer.
  • the coating device can also be designed for the application of other coating agents, such as for example the application of adhesives, insulating materials, sealants, primers, etc.
  • the coating device according to the invention initially has, in accordance with the prior art, a nozzle applicator, such as, for example, a printhead as mentioned at the beginning and in DE 10 2013 002 412 A1 , US 9 108 424 B2 and DE 10 2010 019 612 A1 is described, so that a detailed description of the structure and functioning of such printheads can be dispensed with.
  • a nozzle applicator such as, for example, a printhead as mentioned at the beginning and in DE 10 2013 002 412 A1 , US 9 108 424 B2 and DE 10 2010 019 612 A1 is described, so that a detailed description of the structure and functioning of such printheads can be dispensed with.
  • the coating device according to the invention is characterized by an additional device for preventing clogging of the nozzle.
  • a filter which is arranged upstream of the nozzle and filters the coating agent, for example solid coating agent particles be filtered out, as this could lead to clogging of the nozzle.
  • the filter preferably has a certain filter mesh width, which is preferably adapted to the nozzle size of the nozzle opening of the nozzle.
  • the ratio of the filter mesh size to the nozzle size can be in the range of 0.01-5, with any intermediate intervals being possible.
  • Preferred values for the ratio of the filter mesh size to the nozzle size are, for example, 0.075, 0.1, 0.15, 0.66, 1.0 and 2.0.
  • this filter can be rinsed with a detergent in order to be able to rinse out any coating agent residues that have been filtered out of the filter.
  • a flushing agent flows through the filter.
  • the flushing agent can optionally be passed through the filter in the opposite direction of flow or in the normal direction of flow.
  • the flushing agent is passed through the filter alternately against the normal flow direction and in the normal flow direction during a flushing process in order to achieve the best possible flushing effect.
  • the coating device therefore preferably has a detergent connection in order to supply the detergent.
  • the coating device preferably has a return connection in order to return a mixture of coating agent residues and detergent to a return.
  • the coating device has a flush valve arrangement which is connected on the one hand to the flushing agent connection and the return connection and on the other hand to two corresponding connections of the filter.
  • the flush valve arrangement enables bidirectional flushing of the filter with the flushing agent, ie either against the normal flow direction or in the normal flow direction.
  • the filter is a double filter and has two individual filters which are arranged parallel to one another.
  • the coating agent can then be passed into one of the individual filters or into the other individual filter by means of a selection valve arrangement.
  • the selector valve arrangement either directs the flushing agent into one single filter or into the other single filter. This makes it possible for coating agent to flow through one individual filter while the other individual filter is being rinsed.
  • Such an operation can also be referred to as A / B operation, as is known in the field of painting technology of so-called A / B valves. In this way, the necessary rinsing processes do not lead to an interruption of normal coating operation, since during the rinsing of the individual filter, the other individual filter is still available for filtering the coating agent.
  • the coating device according to the invention preferably has a metering pump which conveys the coating agent to the nozzle applicator.
  • the filter can be arranged either between the metering pump and the nozzle applicator or upstream of the metering pump.
  • the coating device comprises a color changer which selects a desired coating agent from a plurality of coating agent feed lines and forwards it to the nozzle applicator.
  • a filter is arranged in each of the individual coating agent feed lines upstream of the color changer in order to filter the coating agent supplied.
  • the individual filters at the inputs of the color changer can then be individually adapted to the respective coating agent.
  • the filter preferably has inner contours that are free of undercuts.
  • the inner surfaces of the filter preferably have a very low roughness number Rz ⁇ 10, Rz ⁇ 8, Rz ⁇ 7, Rz ⁇ 6.3, Rz ⁇ 5 or even Rz ⁇ 4 in the areas through which they flow.
  • a second aspect of the invention aims to detect the clogging of a nozzle.
  • This aspect of the invention therefore preferably provides a sensor arrangement in order to be able to distinguish between a faultless beam delivery and a faulty beam delivery.
  • the sensor arrangement has an image sensor, such as a camera.
  • the image sensor captures an image of at least one coating agent jet or a plurality of coating agent jets which are emitted by the nozzle applicator.
  • the visual axis of the image sensor eg camera
  • the visual axis of the image sensor is preferably oriented orthogonally to the coating agent jets and parallel to the plane of the coating agent jets, ie the image sensor looks at the coating agent jets from the front.
  • the visual axis it is also possible for the visual axis to be oriented transversely to the plane of the coating agent jets, ie the image sensor is viewing the coating agent jets from the side. In a special one Both views can be recorded one after the other or by means of two sensors.
  • the sensor arrangement in this exemplary embodiment preferably has an image evaluation unit which evaluates the image of the coating agent jets detected by the image sensor and detects errors therein, such as, for example, a missing coating agent jet due to the clogging of a nozzle.
  • the image acquisition can be improved here by an illumination device which is arranged in the line of sight of the image sensor on the opposite side of the coating agent jets.
  • the sensor arrangement has a capacitive sensor which measures a plurality of coating agent jets together.
  • the capacitive sensor capacitively measures only a single coating agent jet, in which case a capacitive sensor is then preferably provided for each nozzle.
  • the sensor arrangement has a light barrier, the coating agent jet from the nozzle passing through the light barrier and being measured by the light barrier.
  • each nozzle is preferably assigned a light barrier, which is passed by the respective coating agent jet.
  • the coating agent flows through a coating agent channel and is measured in the coating agent channel by a capacitive sensor or by a resistive sensor (resistance sensor) in order to infer errors (e.g. insufficient flow rate).
  • the print head preferably emits a narrowly limited jet of coating agent, as opposed to a spray mist, as is the case with conventional atomizers (e.g. rotary atomizers).
  • conventional atomizers e.g. rotary atomizers
  • the print head can, for example, emit a droplet jet in contrast to a coating agent jet connected in the longitudinal direction of the jet.
  • the printhead emits a coating agent jet which is connected in the longitudinal direction of the jet, in contrast to a droplet jet.
  • the print head preferably has a very high application efficiency of at least 80%, 90%, 95% or even 99%, so that essentially all of the applied coating agent is completely deposited on the component without the occurrence of disruptive overspray.
  • the print head preferably has a high surface coating performance, which is preferably so large that the print head is suitable for painting motor vehicle body components.
  • the surface coating performance of the nozzle applicator is therefore preferably greater than 0.5 m 2 / min, 1 m 2 / min or even 3 m 2 / min.
  • the nozzle applicator is preferably moved by means of a manipulator, which is preferably a multi-axis painting robot with serial robot kinematics and at least six movable robot axes.
  • the coating agent delivery in the nozzle applicator is preferably controlled by control valves with a controllable actuator, such as a magnetic actuator or a piezo actuator.
  • the invention also includes a corresponding operating method, the method steps of the operating method already resulting from the above description and therefore need not be described separately.
  • the nozzle applicator with the nozzles open is moved over a test surface (eg non-woven fabric, glass plate), the nozzle applicator spraying coating agent onto the Applied test area and thereby creates a spray pattern on the test area.
  • the spray pattern can then be used to determine whether the nozzles are partially or completely clogged.
  • the operating method according to the invention therefore provides that the spray pattern on the test surface is evaluated, for example with a camera and an image evaluation unit.
  • Figure 1 shows a highly simplified representation of a coating device according to the invention with a nozzle applicator 1 as an application device, for example can be a printhead that emits spatially limited coating agent jets instead of a spray, as is the case with conventional atomizers (eg rotary atomizers).
  • a nozzle applicator 1 as an application device, for example can be a printhead that emits spatially limited coating agent jets instead of a spray, as is the case with conventional atomizers (eg rotary atomizers).
  • the nozzle applicator 1 is supplied with the paint to be applied on the input side via a filter 2, a metering pump 3 and a color changer 4.
  • the color changer 4 is connected on the input side to a plurality of coating agent feed lines F1-F6, via which differently colored paints can be fed.
  • the color changer 4 is connected on the input side to a pulse air line PL and to a thinner line V, via which pulse air or flushing agent (thinner) can be supplied for flushing the nozzle applicator 1, the filter 2 and the metering pump 3.
  • the coating device has a return valve 5, via which rinsed-out coating agent residues and detergent can be passed into a return R.
  • the nozzle applicator 1 has numerous nozzles with a very small nozzle diameter, so that there is a risk of the nozzles of the nozzle applicator 1 becoming clogged.
  • the filter 2 reduces this risk of clogging the nozzles, since the filter 2 filters out coating agent components which can lead to clogging of the nozzles.
  • the filter 2 can be rinsed in order to be able to rinse out the filtered coating agent components from the filter 2 again.
  • the coating device has a flush valve arrangement 6, which is connected on the input side to the detergent supply line V and to the return line R.
  • the purge valve arrangement 6 is connected to an upstream and a downstream purge connection of the filter 2. The flushing valve arrangement 6 can therefore selectively flow detergent through the filter 2 in the normal flow direction or counter to the normal flow direction in order to flush out any coating agent residues contained therein from the filter 2.
  • Figure 2 shows a modification of Figure 1 , so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that two individual filters 2.1, 2.2 are provided, which are connected in parallel to one another.
  • a selection valve arrangement 7 and 8, respectively, is arranged upstream and downstream of the two individual filters 2.1, 2.2, which is connected to the two individual filters 2.1, 2.2.
  • the upstream selection valve arrangement 7 can optionally supply coating agent and rinsing agent to the individual filter 2.1 or the individual filter 2.2.
  • the downstream selection valve arrangement 8 can take up coating agent from one single filter 2.1 or 2.2 and feed it to the nozzle applicator 1 and take up detergent and coating agent residues from the respective other single filter 2.2 or 2.1 and guide it into the return line R.
  • FIG. 3 shows a further modification, so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that a filter 2.1-2.6 is arranged in each of the coating agent feed lines F1-F6. This offers the possibility that the filter characteristics and filter properties of the individual filters 2.1-2.4 can be individually adapted to the properties of the respective coating agent.
  • FIG Figure 4A The exemplary embodiment according to FIG Figure 4A described, which is based on a second aspect of the invention, in which the clogging of the nozzles of the nozzle applicator 1 is detected, so that countermeasures can then be taken if necessary.
  • the coating device initially has a camera 9, which is arranged on the side next to the nozzle applicator 1 and is aligned with its visual axis essentially at right angles to the plane of the coating agent jets.
  • the camera 9 thus looks at the coating agent jets from the nozzle applicator 1 from the side.
  • an illuminating device 10 is arranged on the opposite side of the coating agent jets.
  • the camera 9 On the output side, the camera 9 is connected to an image evaluation unit 11, which evaluates the image of the coating agent jets captured by the camera 9 in order to detect errors.
  • the drawing in the lower area thus shows an exemplary, simplified representation of a captured image 12 with a plurality of coating agent jets 13-19.
  • the coating agent jets 13-15 are faultless.
  • the coating agent jet 16 emerges obliquely from the nozzle applicator 1, which can be caused by a partial clogging of the nozzle in question.
  • the coating agent jet 18, on the other hand, has an insufficient amount of the coating agent, which can be caused by a partial clogging of the coating agent supply.
  • the image evaluation unit 11 now enables the different types of error-free or defective coating agent jets 13-19 to be recognized and differentiated.
  • Figure 4B shows a modification of Figure 4A , so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that the viewing axis of the camera 9 is oriented at right angles to the individual coating agent jets, but parallel to the plane of the coating agent jets.
  • Figure 5 shows a modification of the embodiment according to Figure 4A respectively.
  • Figure 4B so that to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that instead of the camera-based image detection system, a plurality of light barriers 20-23 are provided, each of which measures a coating agent beam 24-27 and is each connected to an evaluation unit 28-31 in order to be able to recognize a missing coating agent beam.
  • FIG. 6 shows a further modification, so that again to avoid repetition reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that, instead of the light barriers 20-23, a capacitive sensor with two capacitor plates 32, 33 is used in order to measure the coating agent rays 24-27.
  • the coating agent jets 24-27 thus run between the two capacitor plates 32, 33, so that the capacitive sensor measures all coating agent jets 24-27 together.
  • the capacitive sensor 32, 33 is connected to an evaluation unit 34, which can detect errors.
  • a special feature of this exemplary embodiment is that the two capacitor plates 32, 33 of the capacitive sensor are arranged on the walls of a nozzle channel 35 which runs through a nozzle plate 36.
  • the capacitive sensor with the two capacitor plates 32, 33 thus measures the coating agent flow through the nozzle channel 35 and can thereby detect errors.
  • the coating agent is fed through a lacquer feed 37 in the printhead.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Coating Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (15)

  1. Dispositif de revêtement pour revêtir des composants d'un produit de revêtement, en particulier pour la mise en peinture de composants de carrosserie de véhicule automobile, avec
    a) un applicateur à buses (1), en particulier une tête sous pression, avec au moins une buse pour distribuer un jet de produit de revêtement (13 - 19 ; 24 - 27) du produit de revêtement sur le composant à revêtir,
    b) un dispositif pour empêcher un encrassement de la buse avec un filtre (2, 2.1 - 2.6) en amont devant la buse pour la filtration du produit de revêtement, dans lequel le produit de revêtement s'écoule à travers le filtre (2, 2.1 -, 2.6) dans une direction d'écoulement normale dans le mode de fonctionnement de revêtement,
    caractérisé en ce
    c) que le dispositif de revêtement présente un ensemble de soupape de rinçage (6) pour acheminer à travers le filtre (2, 2.1 - 2.6) le produit de rinçage au choix dans la direction d'écoulement normale ou dans le sens opposé à la direction d'écoulement normale,
    d) que le filtre peut être rincé dans la direction d'écoulement normale avec un produit de rinçage, de sorte que le produit de rinçage traverse le filtre (2, 2.1, - 2.6) dans la direction d'écoulement normale, et
    e) que le filtre (2, 2.1 -, 2.6) peut être rincé avec le produit de rinçage dans le sens opposé à la direction d'écoulement normale de sorte que le produit de rinçage traverse le filtre (2, 2.1, - 2.6) dans le sens opposé à la direction d'écoulement normale.
  2. Dispositif de revêtement selon la revendication 1,
    caractérisé en ce
    a) que la buse présente une ouverture de buse avec une taille de buse définie, et
    b) que le filtre (2, 2.1 - 2.6) présente une largeur de mailles de filtre définie, et
    c) que le rapport entre la largeur de mailles de filtre et la taille de buse est supérieur à 0,01, 0,05, 0,1, et/ou
    d) que le rapport entre la largeur de mailles de filtre et la taille de buse est inférieur à 5, 2, 1, 0,5, 0,2.
  3. Dispositif de revêtement selon la revendication 1,
    caractérisé en ce
    a) que le dispositif de revêtement présente un raccord de produit de rinçage (V) pour amener le produit de rinçage, et/ou
    b) que le dispositif de revêtement présente un raccord de retour (R) pour ramener un mélange composé de produit de revêtement et de produit de rinçage dans un système de retour.
  4. Dispositif de revêtement selon l'une quelconque des revendications précédentes, caractérisé en ce
    a) que le filtre (2.1 - 2.2) est un double filtre avec deux filtres individuels (2.1 - 2.2), qui sont disposés de manière parallèle l'un par rapport à l'autre,
    b) que le produit de revêtement est acheminé par un ensemble de soupape de sélection (7, 8) au choix dans un filtre individuel (2.1) ou dans l'autre filtre individuel (2.2),
    c) que le produit de rinçage est acheminé par l'ensemble de soupape de sélection (7, 8) au choix dans un filtre individuel (2.1) ou dans l'autre filtre individuel (2.2), et
    d) qu'un filtre individuel (2.1) est traversé par le produit de rinçage, tandis que l'autre filtre individuel (2.2) est traversé par le produit de revêtement.
  5. Dispositif de revêtement selon l'une quelconque des revendications précédentes, caractérisé en ce
    a) que le dispositif de revêtement présente une pompe de dosage (3), qui refoule le produit de revêtement vers l'applicateur à buses (1), et
    b) que le filtre (2) est disposé entre la pompe de dosage (3) et l'applicateur à buses (1), ou
    c) que le filtre (2.1, 2.6) est disposé en amont devant la pompe de dosage.
  6. Dispositif de revêtement selon l'une quelconque des revendications précédentes, caractérisé en ce
    a) que le dispositif de revêtement présente un changeur de couleur (4), qui sélectionne parmi plusieurs conduits d'arrivée de produit de revêtement (F1 - F6) un produit de revêtement souhaité et le transfère à l'applicateur à buses (1)),
    b) que respectivement un filtre (2.1 - 2.6) est disposé dans les conduits d'arrivée de produit de revêtement (F1 - F6) en amont devant le changeur de couleur (4), et
    c) que les filtres (2.1 - 2.6) sont de préférence différents à l'entrée du changeur de couleur (4) et sont adaptés au produit de revêtement respectif.
  7. Dispositif de revêtement selon l'une quelconque des revendications précédentes, caractérisé en ce
    a) que le filtre (2, 2.1 - 2.6) présente des contours intérieurs, qui sont sans contre-dépouille, et/ou
    b) que le filtre (2, 2.1 - 2.6) présente des surfaces intérieures avec un nombre brut Rz < 10, Rz < 8, Rz < 7, Rz < 6,3, Rz < 5 ou Rz < 4.
  8. Dispositif de revêtement selon l'une quelconque des revendications précédentes, caractérisé par un ensemble de capteurs (9 ; 20 - 23 ; 33, 33) pour distinguer une distribution de jet sans erreur d'une distribution de jet erronée par l'applicateur à buses (1) .
  9. Dispositif de revêtement selon la revendication 8,
    caractérisé en ce
    a) que l'ensemble de capteurs (9, 10, 11) présente un capteur d'image (9), en particulier une caméra (9), qui détecte une image (12) des jets de produit de revêtement (13 - 19),
    b) que l'ensemble de capteurs (9, 10, 11) présente une unité d'évaluation d'image (11), qui évalue l'image (12) détectée par le capteur d'image (9) et identifie dans celle-ci des anomalies.
  10. Dispositif de revêtement selon la revendication 9, caractérisé en ce que l'unité d'évaluation d'image (11) identifie par l'évaluation d'image des anomalies suivantes :
    a) un jet de produit de revêtement oblique (16), qui sort de manière inclinée par rapport à l'axe de buse, et/ou
    b) un jet de produit de revêtement instable (17), qui se divise en gouttelettes de produit de revêtement, et/ou
    c) un jet de produit de revêtement (18) avec une quantité de produit de revêtement trop faible, et/ou
    d) un jet de produit de revêtement perturbé (19), et/ou
    e) un jet de produit de revêtement absent en raison d'un encrassement de la buse.
  11. Dispositif de revêtement selon l'une quelconque des revendications 8 à 10, caractérisé en ce
    a) que l'ensemble de capteurs présente un capteur capacitif (32, 33), et
    b) que le capteur capacitif (32, 33) mesure conjointement plusieurs jets de produit de revêtement (24 - 27), ou
    c) qu'est associé à chaque buse (35) respectivement un capteur capacitif (32, 33), qui mesure de manière capacitive le jet de produit de revêtement respectif.
  12. Dispositif de revêtement selon l'une quelconque des revendications 8 à 11, caractérisé en ce
    a) que l'ensemble de capteurs présente une barrière photoélectrique (20 - 23), dans lequel le jet de produit de revêtement (24 - 27) provenant de la base passe par la barrière photoélectrique (20 - 23), et/ou
    b) qu'est associée à chaque buse respectivement une barrière photoélectrique (20 - 23), qui est traversée par le jet de produit de revêtement (24 - 27) respectif.
  13. Dispositif de revêtement selon l'une quelconque des revendications 8 à 12, caractérisé en ce
    a) que du produit de revêtement s'écoule à travers un canal de produit de revêtement (35), et
    b) qu'un capteur capacitif ou résistif (32, 33) mesure l'écoulement de produit de revêtement dans le canal de produit de revêtement (35) pour conclure sur cette base des anomalies.
  14. Dispositif de revêtement selon l'une quelconque des revendications précédentes, caractérisé en ce
    a) que la tête sous pression distribue un jet de produit de revêtement étroitement délimité contrairement à un brouillard pulvérisé, et/ou
    b) que la tête sous pression distribue un jet de gouttelettes contrairement à un jet de produit de revêtement continu dans le sens longitudinal de jet, ou
    c) que la tête sous pression distribue un jet de produit de revêtement continu dans le sens longitudinal de jet contrairement à un jet de gouttelettes, et/ou
    d) que la tête sous pression présente un taux de recouvrement d'au moins 80 %, 90 %, 95 % ou 99 % de sorte que sensiblement l'ensemble du produit de revêtement appliqué est déposé totalement sur le composant sans que ne se forme un overspray, et/ou
    e) que la tête sous pression présente une puissance de revêtement de surfaces d'au moins 0,5 m2/min, 1 m2/min, 2 m2/min ou au moins 3 m2/min, et/ou
    f) que l'applicateur à buses (1) est déplacé au moyen d'un manipulateur, en particulier au moins d'un robot multiaxial, et/ou
    g) que le produit de revêtement est une peinture, en particulier une peinture de base, une peinture transparente, une peinture à effet, une peinture mica ou une peinture métallique, et/ou
    h) que le produit de revêtement est une peinture à l'eau ou une peinture à solvant, et/ou
    i) que l'applicateur à buses (1) présente au moins un actionneur pouvant être piloté de manière électrique pour éjecter des gouttes du produit de revêtement provenant de la tête sous pression, en particulier un actionneur magnétique ou un actionneur piézoélectrique, et/ou
    j) que la buse présente un diamètre de buse inférieur à 1 mm, 500 µm, 250 µm, 120 µm ou 50 µm.
  15. Procédé de fonctionnement pour un dispositif de revêtement avec un applicateur à buses (1) avec au moins une buse pour revêtir des composants d'un produit de revêtement, en particulier pour une installation de mise en peinture pour la mise en peinture de composants de véhicule automobile, en particulier pour un dispositif de revêtement selon l'une quelconque des revendications précédentes, avec les étapes suivantes :
    a) de distribution d'un jet de produit de revêtement (13 - 19 ; 24 - 27) du produit de revêtement par l'applicateur à buses (1),
    b) d'empêchement d'un encrassement de la buse de l'applicateur à buses (1) au moyen d'un filtre (2, 2.1 - 2.6) en amont devant la buse, dans lequel le produit de revêtement s'écoule lors du mode de fonctionnement de revêtement dans une direction d'écoulement normale à travers le filtre (2, 2.1 - 2.6),
    caractérisé par des étapes suivantes :
    c) de rinçage du filtre (2, 2.1 - 2.6) dans la direction d'écoulement normale avec un produit de rinçage de sorte que le produit de rinçage traverse le filtre (2, 2.1 - 2.6) dans la direction d'écoulement normale, et
    d) de rinçage du filtre (2, 2.1 - 2.6) dans le sens opposé à la direction d'écoulement normale avec le produit de rinçage de sorte que le produit de rinçage traverse le filtre (2, 2.1 - 2.6) dans le sens opposé à la direction d'écoulement normale.
EP17808445.5A 2016-12-14 2017-12-01 Dispositif de revêtement et méthode de revêtement correspondante Active EP3523053B1 (fr)

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EP20164222.0A EP3689474B1 (fr) 2016-12-14 2017-12-01 Dispositif de revêtement et procédé de fonctionnement associé
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PCT/EP2017/081099 WO2018108563A1 (fr) 2016-12-14 2017-12-01 Dispositif d'application de revêtement et procédé pour le faire fonctionner

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US20190308211A1 (en) 2019-10-10
JP7044783B2 (ja) 2022-03-30
US11167302B2 (en) 2021-11-09
EP3689474A1 (fr) 2020-08-05
PL3523053T3 (pl) 2020-11-02
WO2018108563A1 (fr) 2018-06-21
EP3523053A1 (fr) 2019-08-14
ES2797918T3 (es) 2020-12-04
CN110072633A (zh) 2019-07-30
JP2020513311A (ja) 2020-05-14
CN110072633B (zh) 2021-10-26
HUE050094T2 (hu) 2020-11-30
DE102016014951A1 (de) 2018-06-14
MX2019006970A (es) 2019-08-01
EP3689474B1 (fr) 2021-03-31

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