EP4444477A1 - Betriebsverfahren für eine beschichtungsanlage und entsprechende beschichtungsanlage - Google Patents
Betriebsverfahren für eine beschichtungsanlage und entsprechende beschichtungsanlageInfo
- Publication number
- EP4444477A1 EP4444477A1 EP23716847.1A EP23716847A EP4444477A1 EP 4444477 A1 EP4444477 A1 EP 4444477A1 EP 23716847 A EP23716847 A EP 23716847A EP 4444477 A1 EP4444477 A1 EP 4444477A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rinsing
- coating
- agent
- measuring
- operating method
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- 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
- B05B15/555—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 discharged by cleaning 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
- B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
-
- 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
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid
-
- 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 an operating method for a coating system for coating components with a coating agent, in particular for a painting system for painting motor vehicle body components with a paint.
- the invention further relates to a coating system for carrying out the operating method according to the invention.
- rotary atomizers are usually used as application devices. These rotary atomizers require occasional cleaning, especially when changing colors.
- the rotary atomizers are usually introduced by a painting robot into a cleaning device, as is known, for example, from EP 1 671 706 A2.
- the cleaning device the rotary atomizer to be cleaned is then sprayed from the outside with a detergent in order to clean the outer surfaces of the rotary atomizer.
- the rotary atomizer to be cleaned in the cleaning device is also flowed through with a rinsing agent in order to rinse out paint residues from the rotary atomizer.
- This cleaning process produces a detergent mixture that consists of the detergent used and paint residues. This detergent mixture is usually collected and disposed of.
- the problem here is the assessment of the rinsing quality, which must be checked when a paint booth is put into operation and also during ongoing operation. To do this, it has previously been necessary to enter the paint booth and check the cleaning results on the rotary atomizer by visual inspection.
- a disadvantage of the known cleaning process is the fact that the paint booth has to be entered to check the cleaning results.
- the invention is therefore based on the object of specifying a correspondingly improved operating method and of creating a coating system which is suitable for carrying out the operating method according to the invention.
- the operating method according to the invention relates to a coating system for coating components with a coating agent.
- the coating system is a painting system for painting motor vehicle body components with a paint.
- the invention is not limited to paints with regard to the coating agent to be applied, but can also be implemented with other types of coating agents, such as insulation materials, sealants, adhesives, to name just a few examples.
- the invention is not limited to motor vehicle body components with regard to the components to be coated.
- the invention is not limited to rinsing and cleaning a rotary atomizer or other applicator (e.g. print head).
- the operating method according to the invention is therefore generally suitable for rinsing components of a coating system.
- the operating method according to the invention also provides that at least one component (e.g. rotary atomizer) of the coating system is rinsed with a rinsing agent in order to rinse out any coating agent residues remaining in the component or to rinse off any coating agent residues adhering to the component.
- the invention therefore includes both internal washing and external washing, with both variants (internal washing and external washing) also being possible on their own.
- the operating method according to the invention also provides, in accordance with the known operating method described above, that as part of a rinsing process, a rinsing agent mixture is collected, which consists of the rinsing agent applied for rinsing on the one hand and residues of the rinsed-out coating agent (e.g. paint residues) on the other hand.
- a rinsing agent mixture is collected, which consists of the rinsing agent applied for rinsing on the one hand and residues of the rinsed-out coating agent (e.g. paint residues) on the other hand.
- the operating method according to the invention is now characterized in that the collected detergent mixture is measured, with a measurement result being determined, which then enables a quality assessment in a next step in order to be able to assess the washing quality of the previous washing process.
- the collected detergent mixture still contains relatively large amounts of paint residue at the end of the rinsing process, which can be recognized by measuring the detergent mixture according to the invention.
- the duration of the rinsing process can be extended so that at the end of the rinsing process there is only an acceptably small amount of paint residue left in the rinsing agent mixture.
- the invention offers the advantage that the paint booth no longer has to be entered in order to be able to assess the rinsing quality of a rinsing process by visually inspecting the component to be cleaned (e.g. rotary atomizer).
- the invention also enables automated checking of the washing quality, which is much more precise and largely excludes human errors.
- rinsing is carried out in accordance with a predetermined rinsing program, with the rinsing program determining at least one rinsing parameter, such as the rinsing duration.
- the rinsing program is then adjusted if the quality assessment of the measurement result on the collected rinsing agent mixture shows insufficient rinsing quality.
- the flushing time can be extended.
- the invention is not limited to the rinsing duration with regard to the rinsing parameter to be adjusted.
- the detergent pressure or the detergent flow can also be adjusted, to name just two examples.
- the above-mentioned adjustment of the washing program depending on the quality assessment of the washing process can, for example, be carried out manually by an operator. For example, if the quality assessment comes to the conclusion that the previous rinsing process was not satisfactory, the user can use a slider on a control device or in a graphical user interface of an operating computer and thereby adjust the flushing parameter to be adjusted (e.g. flushing duration).
- washing program is adjusted automatically as part of a control loop depending on the quality assessment.
- an optical measurement of the collected detergent mixture is carried out, which is preferably a transmission measurement, i.e. the collected detergent mixture is illuminated and the light transmitted by the detergent mixture is measured.
- a transmission measurement i.e. the collected detergent mixture is illuminated and the light transmitted by the detergent mixture is measured.
- a reflection measurement on the collected detergent mixture i.e. the reflected light is measured.
- the measurement of the collected detergent mixture can also be carried out using nephelometry.
- a gravimetric or volumetric measuring method can also be used.
- measuring methods are not exhaustive, i.e. within the scope of the invention, other measuring methods can also be used to measure the collected detergent mixture.
- rinsing and the quality assessment of rinsing can be requested manually by an operator, for example.
- the flushing and the quality assessment of the flushing are requested by a computerized maintenance assistant which generates a corresponding maintenance request.
- the application device e.g. rotary atomizer
- the coating robot moving the application device into a specific predetermined rinsing position for rinsing and measuring the collected detergent mixture.
- this rinsing position can be moved in a cutout in a booth wall of a coating booth.
- At least one maintenance cabin (“Cubicle”) is arranged in the coating cabin, as is known, for example, from DE 10 2021133 410.1.
- the rinsing position can then be located in a cutout in the cabin wall of the maintenance cabin.
- the above-mentioned cutout in the cabin wall of the coating cabin or the maintenance cabin can be closed by a closure when no flushing is carried out.
- the invention not only claims protection for the operating method according to the invention described above. Rather, the invention also claims protection for a corresponding coating system that is suitable for carrying out the operating method according to the invention.
- the coating system according to the invention initially has, in accordance with the known coating systems, an application device for applying the coating agent, which is preferably a rotary atomizer.
- the coating system according to the invention also has a coating agent supply in accordance with the known coating systems in order to supply the application device (e.g. rotary atomizer) with the coating agent to be applied.
- the application device e.g. rotary atomizer
- the coating system according to the invention also has a rinsing device for rinsing the application device and/or the coating agent supply with a rinsing agent in order to rinse out or rinse off any residues of the coating agent.
- the coating system according to the invention also contains a collecting device in order to collect the detergent mixture during a rinsing process.
- the coating system according to the invention is now distinguished from the known coating systems by a measuring device which is suitable for measuring the collected detergent mixture and generating a corresponding measurement result. Based on this measurement result, a quality assessment of the rinsing quality of the previous rinsing can then be carried out.
- the collecting device and the measuring device can be integrated together in one component. Alternatively, however, there is also the possibility that the collecting device and the measuring device are separate components.
- the application device eg rotary atomizer
- the application device is arranged in a coating booth, whereby the application device can be guided, for example, by a coating robot.
- the collecting device for collecting the detergent mixture has a collecting container which is arranged within the coating booth.
- the measuring device can be installed outside the coating booth. be arranged and is then connected by a liquid line to the collecting container within the coating booth.
- the collecting device for the detergent mixture can, for example, have one or more of the following components, which are arranged one behind the other in the direction of flow:
- the actual measuring device can contain, for example, one or more of the following components:
- a light detector for detecting the light emitted by the light source after the measuring cell with the detergent mixture contained therein has been illuminated.
- Figure 1 shows a schematic representation of a painting system according to the invention with a cleaning device.
- Figure 2A shows a schematic representation of the measuring devices for measuring the detergent mixture.
- Figure 2B shows a schematic representation of parts of the collecting device and the measuring device.
- Figures 2C shows a reference spectrum for a perfect rinsing result.
- Figures 3A-3C show corresponding representations for a real measurement on a detergent mixture, where the washing result is not perfect, but still acceptable.
- Figure 4 shows a spectrum that was measured on a detergent mixture, the spectrum indicating an unacceptable dishwashing result.
- Figure 5 shows a flow chart to illustrate the operating method according to the invention.
- Figure 6 shows a modification of Figure 1.
- Figure 1 shows a schematic representation of a painting system according to the invention to illustrate the principle according to the invention.
- the painting system initially comprises a painting robot 1, which is arranged in a painting booth 2, the painting robot 1 being shown here only schematically and having a proximal robot arm 3 (“arm 1”) and a distal robot arm 4 (“arm 2”) , whereby the two robot arms 3, 4 can be pivoted relative to one another.
- a robot hand axis 5 At the end of the robot arm 4 there is a robot hand axis 5, which ultimately carries a rotary atomizer 6, as is known from the prior art.
- the rotary atomizer 6 is supplied with the media required for operation by a coating agent supply 7, which is only shown schematically, such as paint and dishwashing liquid, as is also known from the prior art.
- the paint booth 2 there is also a cleaning device 8, which can be of largely conventional design, as is known, for example, from EP 1 671 706 A2.
- the painting robot 1 introduces the rotary atomizer 6 into the cleaning device 8 through an insertion opening in the cleaning device 8.
- the rotary atomizer 6 is then sprayed on the outside with a detergent in the cleaning device 8 and also rinsed on the inside with detergent.
- the rinsing agent mixture resulting from such a rinsing process, consisting of the rinsing agent and the rinsed-out paint residues, is then collected by a collecting device 9, which is also located in the painting booth 2.
- the collected rinsing agent mixture is then passed from the collecting device 9 to a measuring device 10 located outside the painting booth 2, which measures the rinsing agent mixture in order to enable a quality assessment of the rinsing process.
- the measuring device 10 then forwards a corresponding measurement result to an evaluation unit 11, which assesses the washing quality of the washing process based on the measurement result.
- FIG. 2A shows a schematic representation of a part of the measuring device 10, the measuring device 10 operating optically in this exemplary embodiment and carrying out an optical transmission measurement on a detergent mixture 12, which is located in a measuring cell 13 for this purpose.
- the measuring device 10 has a light source 14 in order to illuminate the detergent mixture 12.
- the measuring device 10 has a light detector 15 in order to spectrally measure the light transmitted by the detergent mixture 12 during a transmission measurement.
- Figure 2B also shows components of the collecting device 9, namely a detergent collecting cascade 16 for positively guided collection of the detergent mixture 12, a droplet separator 17 for breaking down and collecting detergent drops, a detergent supply 18 and a funnel 19. Furthermore, between the funnel 19 and the Measuring cell 13 has a shut-off valve 20 provided.
- Figure 2C shows an idealized spectrum I, which is measured by the light detector 15 during a perfect rinsing process.
- Figure 3C shows a actually measured spectrum I, which was measured on the detergent mixture 12 and shows a still acceptable game result.
- FIG. 4 shows a spectrum I, also measured in real terms, which was measured on the collected detergent mixture 12 and indicates an unacceptable game result.
- FIG. 5 which explains the operating method according to the invention, will now be described below.
- the flowchart provides a call to check the flushing program in steps SI and S2. This can follow, for example, in step S1 if a check of the flushing program is required according to the maintenance program. Alternatively, the rinsing result can also be checked in step S2 in the event of color carryover.
- step S3 the automatic test program is started, in which the collected detergent mixture is measured and qualitatively evaluated, which is provided in a step S4.
- step S4 If the quality assessment in step S4 shows that the washing result is acceptable, this is determined in a step S5 and in a step S6 it is recorded that there is no cause for an error in the washing program.
- a rinsing parameter e.g. rinsing duration
- the quality of the rinsing process is then automatically checked again by measuring the collected rinsing agent mixture.
- rinsing quality is not acceptable, this is determined in a step S12 and in an optimization loop the rinsing parameter (e.g. rinsing duration) is then adjusted in a step S13 until the automatic check of the rinsing quality produces a satisfactory result.
- the rinsing parameter e.g. rinsing duration
- step S14 If the game result is satisfactory, this is determined in a step S14 and the optimized value of the rinsing parameter (eg rinsing duration) is saved in a step S15 for the later rinsing processes. In the next step S16, the painting system is then ready for operation.
- the optimized value of the rinsing parameter eg rinsing duration
- Figure 6 shows a modification of the representation according to Figure 1, so that to avoid repetition, reference is made to the above description, the same reference numbers being used for corresponding details.
- a special feature here is that the cleaning device 8 is located outside the paint booth 2.
- the painting robot 1 moves the rotary atomizer 6 through an opening 21 in the wall of the painting booth 2, so that the rotary atomizer 6 can then be inserted into the cleaning device 8 located outside the painting booth 2.
- the opening 21 in the wall of the paint booth 2 can be closed by a closure 22, the closure 22 being shown only schematically.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022108537.6A DE102022108537A1 (de) | 2022-04-08 | 2022-04-08 | Betriebsverfahren für eine Beschichtungsanlage und entsprechende Beschichtungsanlage |
| PCT/EP2023/058671 WO2023194303A1 (de) | 2022-04-08 | 2023-04-03 | Betriebsverfahren für eine beschichtungsanlage und entsprechende beschichtungsanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4444477A1 true EP4444477A1 (de) | 2024-10-16 |
Family
ID=86006508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23716847.1A Pending EP4444477A1 (de) | 2022-04-08 | 2023-04-03 | Betriebsverfahren für eine beschichtungsanlage und entsprechende beschichtungsanlage |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250249474A1 (de) |
| EP (1) | EP4444477A1 (de) |
| CN (1) | CN118984740A (de) |
| DE (1) | DE102022108537A1 (de) |
| WO (1) | WO2023194303A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4342128A1 (de) | 1993-12-10 | 1995-06-14 | Abb Patent Gmbh | Farbauftragvorrichtung |
| US6394111B1 (en) * | 1997-06-11 | 2002-05-28 | Ethicon, Inc. | Detection of cleanliness of a medical device during a washing process |
| DE10212603A1 (de) | 2002-03-21 | 2003-10-02 | Duerr Systems Gmbh | Vorrichtung und Verfahren zum Messen der Menge eines von einem Applikationsgerät abgegebenen Beschichtungsmaterials |
| DE10316644A1 (de) | 2003-04-11 | 2004-10-28 | Robert Bosch Gmbh | Niederdruckspritzmodul und Verfahren zur Niederdruckspritzreinigung mit Restschmutzanlyse von Bauteilen |
| US7588038B2 (en) * | 2004-06-05 | 2009-09-15 | Lg Electronics Inc. | Sump assembly for dishwasher |
| DE102004061322A1 (de) | 2004-12-20 | 2006-06-22 | Dürr Systems GmbH | Verfahren und Reinigungsgerät zum Reinigen einer Sprühvorrichtung |
| DE102005049227B4 (de) | 2005-10-14 | 2007-10-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zur Überwachung der Partikelfracht eines Fluids |
| DE102006032804A1 (de) | 2006-07-14 | 2008-01-17 | Dürr Systems GmbH | Lackieranlage und zugehöriges Betriebsverfahren |
| DE102010041930A1 (de) | 2010-10-04 | 2012-04-05 | Dürr Ecoclean GmbH | Vorrichtung und Verfahren zum Analysieren von Verschmutzung |
| JP7261244B2 (ja) | 2018-05-03 | 2023-04-19 | ファナック アメリカ コーポレイション | ロボットを用いた静電塗装装置 |
| DE102021133410A1 (de) | 2021-12-16 | 2023-06-22 | Dürr Systems Ag | Beschichtungseinrichtung und entsprechendes Betriebsverfahren |
-
2022
- 2022-04-08 DE DE102022108537.6A patent/DE102022108537A1/de active Pending
-
2023
- 2023-04-03 CN CN202380021208.9A patent/CN118984740A/zh active Pending
- 2023-04-03 WO PCT/EP2023/058671 patent/WO2023194303A1/de not_active Ceased
- 2023-04-03 US US18/854,910 patent/US20250249474A1/en active Pending
- 2023-04-03 EP EP23716847.1A patent/EP4444477A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022108537A1 (de) | 2023-10-12 |
| CN118984740A (zh) | 2024-11-19 |
| US20250249474A1 (en) | 2025-08-07 |
| WO2023194303A1 (de) | 2023-10-12 |
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