EP4387773A1 - Reinigungsgerät für eine elektrodenanordnung eines zerstäubers, zugehöriges betriebsverfahren und entsprechende elektrodenanordnung - Google Patents
Reinigungsgerät für eine elektrodenanordnung eines zerstäubers, zugehöriges betriebsverfahren und entsprechende elektrodenanordnungInfo
- Publication number
- EP4387773A1 EP4387773A1 EP22758511.4A EP22758511A EP4387773A1 EP 4387773 A1 EP4387773 A1 EP 4387773A1 EP 22758511 A EP22758511 A EP 22758511A EP 4387773 A1 EP4387773 A1 EP 4387773A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- finger
- chambers
- outer electrodes
- shaped outer
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 403
- 238000011017 operating method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims description 77
- 239000012530 fluid Substances 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 33
- 238000003780 insertion Methods 0.000 claims description 21
- 230000037431 insertion Effects 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 11
- 239000006199 nebulizer Substances 0.000 claims description 10
- 238000011109 contamination Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 description 16
- 238000010422 painting Methods 0.000 description 12
- 239000003599 detergent Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000009503 electrostatic coating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000010782 bulky waste Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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
- 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
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/053—Arrangements for supplying power, e.g. charging power
- B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
-
- 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
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
- B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
- B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
Definitions
- the invention relates to a cleaning device for cleaning an electrode arrangement with a plurality of finger-shaped outer electrodes ("finger electrodes") for the electrostatic external charge on an atomizer (e.g. rotary atomizer).
- the invention also relates to a corresponding operating method for such a cleaning device.
- the invention also relates to a correspondingly adapted one Electrode arrangement for electrostatic external charging on an atomizer (e.g. rotary atomizer).
- rotary atomizers are usually used as application devices, which are moved by a multi-axis painting robot.
- electrostatic paint charging is usually carried out, ie the applied paint is electrostatically charged, whereas the motor vehicle body components to be painted are electrically grounded are such that the electrostatically charged paint deposits primarily on the electrically grounded automobile body components, which is desirable.
- finger-shaped external electrodes are used, which protrude obliquely forward and outward from the atomizer housing of the rotary atomizer and electrostatically charge the paint spray jet emitted by the rotary atomizer.
- the problem here is that the paint can also be deposited on the finger-shaped outer electrodes, which is undesirable since this leads to high-voltage disruptions and thus to the interruption of the painting process. It is therefore known from the prior art to clean the finger-shaped outer electrodes of such an electrode arrangement.
- the individual finger-shaped outer electrodes can be introduced one after the other into a cleaning device in which the outer electrodes are treated with a cleaning fluid (e.g. rinsing liquid, mixture of air and rinsing liquid).
- a disadvantage here is the fact that the individual finger-shaped outer electrodes can only be cleaned one after the other, so that the time required to clean the electrode arrangement is relatively large.
- Another disadvantage of the known cleaning devices is that the painting robot has to be programmed in such a way that the finger-shaped outer electrodes are inserted exactly into the cleaning device.
- the movement sequence required for this is relatively complicated, so that the programming of the robot movement for a cleaning process is correspondingly complex.
- the invention is therefore based on the object of creating a correspondingly improved cleaning device for an electrode arrangement of an atomizer. Furthermore, the invention is based on the object of specifying a corresponding operating method for such a cleaning device. Furthermore, the invention is based on the object of creating a suitable electrode arrangement for electrostatic external charging.
- the cleaning device according to the invention initially has a first cleaning chamber with an insertion opening to accommodate one of the finger-shaped outer electrodes of the electrode arrangement during a cleaning process, as already described above for the prior art.
- the cleaning device according to the invention is characterized in that not only a single cleaning chamber is present, but at least a second cleaning chamber with an insertion opening for receiving one of the finger-shaped outer electrodes during the cleaning Process, so that at least two of the finger-shaped outer electrodes of the electrode assembly can be cleaned simultaneously during the cleaning process.
- the cleaning device according to the invention therefore has at least two cleaning chambers for the individual finger-shaped outer electrodes, so that a corresponding number of finger-shaped outer electrodes of the electrode arrangement can be cleaned at the same time. This reduces the amount of time required for a cleaning process accordingly.
- the cleaning device according to the invention can have at least two, three, four, five, six, seven or even eight cleaning chambers.
- the cleaning chambers of the cleaning device according to the invention are all aligned parallel to one another with respect to their insertion direction. This is particularly advantageous when the electrode arrangement to be cleaned has finger-shaped outer electrodes which are also aligned parallel to one another, at least with their free ends. The finger-shaped outer electrodes of the electrode arrangement can then be inserted into the associated cleaning chambers at the same time.
- a seal is provided at the insertion opening of the individual cleaning chambers, which is intended to prevent cleaning fluid (e.g. rinsing liquid, mixture of rinsing liquid and air) from escaping from the cleaning chamber during a cleaning process, which could lead to contamination of the environment .
- cleaning fluid e.g. rinsing liquid, mixture of rinsing liquid and air
- a contacting seal which can be, for example, an annular sealing lip, which surrounds the outer electrode to be cleaned in a ring during the cleaning process and rests on the outer surface of the outer electrode to be cleaned, preferably resiliently with a certain contact pressure.
- Another possibility for constructively realizing the sealing of the insertion opening consists in a non-contact sealing, for example in the form of a blown air ring that blows an air curtain across the insertion opening, as is known per se from the prior art.
- spray nozzles can be arranged in the cleaning chambers in order to spray the finger-shaped outer electrodes with the respective cleaning fluid during a cleaning process.
- a first spray nozzle preferably serves to spray the outer lateral surface of the finger-shaped outer electrodes with the cleaning fluid during the cleaning process.
- a second spray nozzle preferably serves to spray the free end of the outer electrode (i.e. the end face) with the cleaning fluid in the axial direction during the cleaning process. If the finger-shaped outer electrodes to be cleaned are introduced into the cleaning chamber from top to bottom, this second spray nozzle is preferably located under the outer electrode to be cleaned.
- the first spray nozzle for spraying the lateral surface of the finger-shaped outer electrodes is preferably arranged on the upper side near the insertion opening in the respective cleaning chamber, for example in the upper quarter or in the upper fifth of the cleaning chamber.
- the first spray nozzle for spraying the outer surface of the finger-shaped outer electrodes is preferably aligned radially in cross section at right angles to the central axis of the respective cleaning chamber.
- the first spray nozzle for spraying the lateral surface of the finger-shaped outer electrodes is preferably inclined away from the respective insertion opening of the cleaning chamber, in particular at an angle of 0°-60°, 5°-50° or 10° to the central axis of the cleaning chamber °-30°. This inclination of the first spray nozzle makes sense so that, if possible, no cleaning fluid can escape from the insertion opening.
- the first spray nozzle for spraying the lateral surface of the finger-shaped outer electrodes can be designed as a flat jet nozzle which emits a flat jet of cleaning fluid.
- the first spray nozzle for spraying the lateral surface of the finger-shaped outer electrodes is designed as a full cone jet nozzle, which emits a conical, symmetrical jet of the cleaning fluid.
- the at least one first spray nozzle is a rotating nozzle.
- the second spray nozzle for spraying the end face of the finger-shaped outer electrodes is in of the respective cleaning chamber is preferably arranged on the underside, so that the second spray nozzle is located under the outer electrode to be cleaned during the cleaning process.
- the second spray nozzle for spraying the end face of the finger-shaped outer electrode can therefore be arranged centrally in the respective cleaning chamber.
- the second spray nozzle can be aligned parallel to the central axis of the respective cleaning chamber and spray the cleaning fluid upwards along the central axis of the respective cleaning chamber in the direction of the outer electrode to be cleaned.
- At least one drying nozzle is preferably arranged in the individual cleaning chambers in order to blow compressed air on the outer electrode to be cleaned after the cleaning process and thereby dry it.
- the drying nozzle preferably blows the compressed air downwards at an angle to the central axis of the respective cleaning chamber in order to wipe off cleaning fluid adhering to the outer electrode to be cleaned downwards.
- this drying nozzle can be designed as a ring-shaped slit nozzle, which blows an air curtain against the outer electrode to be dried.
- the drying nozzle consists of several individual nozzles, which are distributed in a ring over the circumference of the respective cleaning chamber and blow the compressed air inwards against the finger-shaped outer electrode to be dried.
- drying does not necessarily take place by blowing compressed air on it. Rather, it is also possible for the drying nozzle to be designed as a suction nozzle and to suck off air or a mixture of air, paint and/or detergent in order to bring about the drying.
- the cleaning chambers are distributed over a number of cleaning modules, each of which contains a number of cleaning chambers.
- a first cleaning module can have two cleaning chambers arranged in a row, with the two cleaning chambers in the first cleaning module preferably being aligned in parallel.
- a second cleaning module preferably also has at least two cleaning chambers arranged in a row, which are preferably also both parallel to one another are aligned.
- the two cleaning modules are preferably aligned parallel to one another, so that the rows of cleaning chambers in the two cleaning modules run parallel to one another.
- the cleaning modules are arranged opposite one another, so that the cleaning chambers are all aligned in parallel.
- the opposing cleaning modules can enclose a space between them to accommodate an atomizer, while a plurality of the outer electrodes mounted on the atomizer are inserted into the cleaning chambers.
- the atomizer e.g. rotary atomizer
- the cleaning liquid is preferably supplied by a cleaning agent supply.
- the cleaning device according to the invention preferably has a compressed air supply to supply compressed air, which is also used in a cleaning process. A mixture of the cleaning liquid and the compressed air can then be sprayed off via a spray nozzle in order to clean the finger-shaped outer electrodes.
- a valve arrangement can be provided which is connected on the input side to the cleaning agent supply and to the compressed air supply and on the output side to the at least one spray nozzle.
- the valve assembly can assume different valve positions, which serve different functions. In a mixing position, the valve arrangement can mix the compressed air with the cleaning liquid and forward the mixture to the spray nozzle. In a drying position, on the other hand, the valve arrangement selects only the compressed air and passes it on to the spray nozzle without the cleaning liquid for drying the outer electrodes.
- the individual cleaning chambers can be connected to a separating device on the outlet side, which takes media (e.g. paint residues, rinsing liquid, compressed air) from the cleaning chamber and separates liquid media (e.g. rinsing liquid) from gaseous media (e.g. compressed air).
- media e.g. paint residues, rinsing liquid, compressed air
- liquid media e.g. rinsing liquid
- gaseous media e.g. compressed air
- Such a separating device can be connected on the outlet side to a disposal (e.g. collection container) that receives liquid media from the cleaning chamber.
- a disposal e.g. collection container
- a controllable Valve (eg ball valve) may be arranged, which controls the outflow from the separator into the collection container.
- the separating device is open on the outlet side and, for example, opens into a funnel arranged below the separating device.
- each of the cleaning chambers has its own separating device, which disposes of liquid media in its own disposal facility.
- the cleaning chambers each have their own separating device, but the liquid media are disposed of in a common disposal facility.
- the cleaning chambers have a common separating device that disposes of liquid media in a common disposal facility.
- spray nozzles can be provided in the cleaning chambers in order to spray the outer electrodes with a cleaning fluid.
- a plurality of such spray nozzles are provided, which are supplied with the cleaning fluid from a common distributor ring. It is advantageous here if the distributor ring is designed in such a way that the cleaning fluid automatically runs out of the distributor ring after a cleaning process. This is advantageous because no cleaning fluid then remains in the distribution ring that could dry on or drip out.
- the cleaning device has a spring suspension with at least one spring for resilient mounting of the cleaning device on a substrate.
- the spring suspension thus enables an evasive movement of the flexibly suspended cleaning device in the event of a collision, as a result of which damage to the electrode arrangement and the cleaning device is largely avoided.
- the spring suspension also serves to ensure a secure seal in order to keep the pressure on the sealing points.
- a separate cleaning chamber can be provided, into which the nebulizer can be inserted in order to clean the nebulizer therein.
- the cleaning device for the finger-shaped outer electrodes of the electrode arrangement can be built around the cleaning device for the atomizer housing.
- the cleaning chamber for cleaning the finger-shaped outer electrodes is preferably arranged essentially centrally in the cleaning device, so that the nebulizer can insert its outer electrodes into the cleaning chamber from opposite sides of the cleaning device.
- the nebulizer must be positioned on the side of the cleaning device that is closer to the off-center cleaning chamber in order to clean its outer electrodes.
- the cleaning chamber preferably has a wall that is liquid-tight and/or air-tight.
- the parallel ends of the outer electrodes of the electrode arrangement to be cleaned are preferably at least 1 cm, 2 cm or 3 cm long. This parallel alignment of the finger-shaped outer electrodes is advantageous because the finger-shaped outer electrodes can then be introduced together into the respective cleaning chambers of the cleaning device as part of a single linear movement.
- the cleaning fluid can be a mixture of compressed air and a cleaning liquid.
- concentration of the cleaning liquid in this mixture can be adjusted depending on the degree of contamination of the finger-shaped outer electrodes, as will be described later in detail.
- Cleaning is not limited to spraying.
- the cleaning could also be done dry or dry or damp with brushes or dry or damp with textile fabrics.
- the cleaning chambers are arranged together on a rotary mechanism that can be rotated about an axis of rotation between different rotary positions, with the cleaning chambers preferably being aligned parallel to the axis of rotation and in each of the rotary positions several finger-shaped outer electrodes can be cleaned simultaneously.
- the electrode arrangement to be cleaned can have eight finger-shaped external electrodes exhibit digging.
- the cleaning device can then have four cleaning chambers, for example, which are arranged on the rotary mechanism. In this way, four finger-shaped outer electrodes can be cleaned at the same time.
- the rotary mechanism only has to be turned slightly so that the cleaning chambers are aligned in the extension of the other finger-shaped outer electrodes.
- the finger-shaped outer electrodes can be inserted or pulled out of the cleaning chambers, for example, by the painting robot or by a separate lifting mechanism, which raises or lowers the cleaning chambers.
- the invention also includes a corresponding operating method.
- the operating method according to the invention is characterized in that several outer electrodes are inserted into the associated cleaning chambers of the cleaning device and then cleaned at the same time.
- different types of spray nozzles can be arranged in the individual cleaning chambers, which spray the lateral surface or the front surface of the finger-shaped outer electrode with a cleaning fluid.
- the spray nozzles of the individual cleaning chambers can be controlled together and then release the cleaning fluid at the same time.
- the cleaning processes in the various cleaning chambers are staggered in time.
- the spray nozzles in the individual cleaning chambers are controlled independently and one after the other.
- the lateral surface and the end face of the finger-shaped outer electrodes can also be sprayed either at the same time or one after the other.
- the invention also enables the cleaning process to be adapted to the degree of soiling of the individual finger-shaped outer electrodes. If the outer electrodes are very heavily soiled, for example, a correspondingly intensive cleaning process is required. If, on the other hand, the outer electrodes are only slightly soiled, a correspondingly gentle cleaning process is sufficient.
- the invention therefore preferably provides that the degree of contamination of the individual finger-shaped outer electrodes is determined, which can be done, for example, as part of a visual inspection by an operator or automatically by means of of a measuring device. However, there is also the possibility of determining the degree of contamination by evaluating variables (eg current, voltage) of an electrostatic coating material charge. Software can then determine the optimum time for cleaning depending on the degree of contamination determined.
- the cleaning fluid is then adjusted depending on the degree of contamination determined.
- concentration of the rinsing liquid in the cleaning fluid can be adjusted for this purpose.
- a relatively high concentration of the rinsing liquid is then chosen in order to achieve a correspondingly good cleaning effect.
- the amount of cleaning fluid released during a cleaning process can be adjusted as a function of the degree of soiling or the spray pressure with which the cleaning fluid is sprayed off.
- the invention also claims protection for a correspondingly adapted electrode arrangement for the electrostatic external charging of coating material (e.g. paint).
- coating material e.g. paint
- the electrode arrangement according to the invention has, in accordance with the known electrode arrangements described above for electrostatic external charging on an atomizer, several finger-shaped external electrodes which are used to electrostatically charge the sprayed-off coating agent (e.g. paint).
- the sprayed-off coating agent e.g. paint
- the electrode arrangement according to the invention is characterized in that the finger-shaped outer electrodes are aligned parallel to one another at least at their ends. This is advantageous because the parallel outer electrodes can then be introduced together into a plurality of cleaning chambers aligned parallel to one another.
- the finger-shaped outer electrodes are not necessarily aligned parallel to one another over their entire length. Rather, it is also possible for the finger-shaped outer electrodes to be aligned parallel to one another only with their ends.
- the electrode assembly includes an annular mounting ring for mounting on the nebulizer.
- the ring-shaped mounting ring can then, for example, simply be placed on the atomizer housing of a rotary atomizer. are plugged in, the electrode arrangement can then be fixed in the plugged-in state on the nebulizer.
- the finger-shaped outer electrodes are preferably distributed over the circumference of the ring-shaped electrode arrangement, with the arrangement of the individual finger-shaped outer electrodes preferably being equidistant.
- the parallel ends of the individual finger-shaped outer electrodes can then preferably be aligned at right angles to the mounting ring.
- the finger-shaped outer electrodes can each have a casing made of an electrically insulating material (e.g. plastic), with the actual electrode tips being inserted into the casing and being able to protrude axially out of the casing.
- an electrically insulating material e.g. plastic
- the electrode arrangement according to the invention is preferably exchangeable. This made it possible to exchange different electrode configurations for different application situations.
- an electrode arrangement for the exterior painting can be exchanged for an electrode arrangement for the interior painting.
- the electrode arrangement for the electrostatic external charge can also be replaced by a cover (dummy) if painting is to be carried out without electrostatic coating agent charging.
- a universal charging ring can also be fitted, which is used for both interior and exterior painting.
- the invention also claims protection for an atomizer (e.g. rotary atomizer) with such an electrode arrangement according to the invention.
- an atomizer e.g. rotary atomizer
- FIG. 1 shows a perspective view of a cleaning device according to the invention with two cleaning modules, each with two cleaning chambers.
- Figure 2 shows a side view of the cleaning device from Figure 1.
- FIG. 3 shows a perspective view of a modified exemplary embodiment of a cleaning device.
- Figure 4 shows a top view of the cleaning device from Figure 3.
- Figure 5 shows a perspective view of a rotary atomizer with an electrode assembly inserted into a module of the cleaning device.
- Figure 6 shows a cut-away perspective view corresponding to Figure 5.
- FIG. 7 shows a side view of the cleaning device according to FIGS. 3-6.
- FIG. 8 shows a side view of a cleaning device according to the invention with a spring suspension.
- FIG. 9 shows a cutaway perspective view of a cleaning chamber of a cleaning device according to the invention.
- FIG. 10 shows a cut-away side view of a cleaning chamber of a cleaning device according to the invention.
- FIG. 11 shows a side view with two possible positions of a rotary atomizer during a cleaning process.
- FIG. 12 shows a side view of a cleaning device in which the rotary atomizer has to assume a specific position during a cleaning process.
- FIG. 13 shows a flowchart to clarify the operating method according to the invention.
- FIG. 14 shows a schematic representation of a cleaning device according to the invention with a rotary mechanism with several cleaning chambers.
- FIGS. 1 and 2 The exemplary embodiment of a cleaning device according to the invention, as shown in FIGS. 1 and 2, will now first be described below.
- a rotary atomizer 1 is shown, which is moved by a painting robot, the painting robot not being shown in the drawing.
- the rotary atomizer 1 has a bell cup 2 as an application element, which rotates at high speed during operation, as is known per se from the prior art.
- the rotary atomizer 1 carries a removable electrode arrangement 3 for electrostatic external charging of the sprayed paint, the electrode arrangement 3 having a total of eight finger electrodes 4 which are distributed equidistantly over the circumference of the electrode arrangement 3 and have parallel ends.
- the cleaning device comprises two cleaning modules 5, 6, each of which contains two cleaning chambers 7, 8 and 9, 10, respectively.
- Two of the finger electrodes 4 can therefore be cleaned simultaneously in the cleaning module 5 .
- two of the finger electrodes 4 can also be cleaned simultaneously in the other cleaning module 6 .
- the two cleaning modules 5 , 6 are each mounted on the outside of a vertical mounting plate 11 , 12 , with the two mounting plates 11 , 12 enclosing an intermediate space 13 .
- the rotary atomizer 1 can dip with its atomizer housing 14 into the space 13 between the two cleaning modules 5, 6, with the finger electrodes 4 being inserted into the associated cleaning chambers 7-10.
- FIG. 3-6 show a modified embodiment of a cleaning device according to the invention, which largely corresponds to the cleaning device described above and shown in Figures 1 and 2, so that to avoid repetition, reference is made to the above description, with the same reference numerals being used for corresponding details become.
- a special feature of this embodiment is that the two cleaning modules 5, 6 are not mounted on the outside of the two mounting plates 11, 12, but on the inside of the two mounting plates 11, 12.
- a blown air ring 15 is arranged in the cleaning chamber 9 on the upper side near the insertion opening, which blows an air curtain across the insertion opening and thereby prevents cleaning agents or paint residues from escaping from the cleaning chamber 9 during a cleaning process.
- the blast air ring 15 thus forms a non-contact seal for the insertion opening of the cleaning chamber 9.
- the drawing also shows that a spray nozzle 17 is arranged in the middle of the underside in the cleaning chamber 9, which is aligned axially upwards and sprays the lower end face of the finger electrodes 4 with cleaning fluid.
- FIG. 7 shows the positioning of the rotary atomizer 1 during a cleaning process.
- the rotary atomizer 1 is moved from top to bottom, so that the finger electrodes 4 to be cleaned are immersed in the respective cleaning chamber 7 .
- the cleaning chamber 7 is arranged essentially centrally in the cleaning module 5 . This means that there is a distance ba or bi between the central axis 18 of the cleaning chamber 7 and the lateral outer contour of the cleaning module 6, the two distances ba, bi being approximately the same size.
- the rotary atomizer 1 has a clear width Iw between the outer contour of the atomizer housing 14 and the finger electrodes 4, which is greater than the distances ba, bi. This is advantageous because the rotary atomizer 1 can not only be positioned on the right side of the cleaning module 5, as shown. Alternatively, there is also the possibility that the rotary atomizer 1 is positioned to the left of the cleaning module 5 during a cleaning process.
- FIG. 8 shows an illustration to clarify the spring suspension of the cleaning device.
- the cleaning device is suspended resiliently on a base 19, for which purpose spiral springs 20 are used.
- the resilient suspension of the cleaning device is particularly advantageous in the event of collisions between the rotary atomizer 1 or the electrode arrangement 3 and the cleaning device, since the spiral springs 20 of the suspension allow the cleaning device to move evasively, which largely prevents damage to the electrode arrangement 3 or the cleaning device.
- discharge funnels 21 , 22 are arranged on the underside of the two cleaning chambers 7 , 8 , which open into a common waste disposal area 23 .
- residues of paint, detergent and compressed air can be discharged through the discharge funnel 21, 22 into the common waste disposal facility 23, as indicated by the arrows.
- the drawing also shows that blast air rings 24 , 25 are supplied with compressed air from a common compressed air supply 26 .
- FIG. 10 shows a modification of the exemplary embodiments described above, the spray nozzles 16 being designed as full cone jet nozzles.
- FIG. 11 and 12 again show the positioning of the rotary atomizer 1 on the cleaning module 5.
- the cleaning chamber 7 is arranged centrally so that the rotary atomizer 1 can be positioned on either side during the cleaning process.
- the cleaning chamber 7 is arranged eccentrically, so that the rotary atomizer 1 can only be positioned on the right-hand side in the drawing during a cleaning process, which necessitates a complex repositioning of the rotary atomizer 1 when cleaning the other finger electrodes 4 .
- FIG. 13 which explains an example of the operating method according to the invention, is now described below.
- a first step S1 the degree of soiling of the individual finger-shaped outer electrodes (“finger electrodes”) of the electrode arrangement is determined. This can be done by an operator or automatically by a measuring device.
- the finger-shaped outer electrodes of the electrode arrangement are then introduced into the individual cleaning chambers of the cleaning device.
- cleaning parameters are then set individually for the individual cleaning chambers depending on the degree of fusion of the respective finger-shaped outer electrodes.
- a high concentration of detergent can then be used, for example, to clean a heavily soiled finger-shaped outer electrode.
- a low concentration of bulky waste can be used to clean a finger-shaped outer electrode that is only slightly soiled.
- the lateral surfaces and the end faces of the finger-shaped outer electrodes are then sprayed with the cleaning fluid.
- This can, for example, be a mixture of cleaning liquid and compressed air.
- the finger-shaped outer electrodes can then be dried, for example by blowing compressed air on them.
- the finger-shaped outer electrodes are then pulled out of the cleaning chambers of the cleaning device.
- FIG. 14 shows a schematic representation of a cleaning device according to the invention with a rotary mechanism 27, four cleaning chambers 28-31 being arranged on the rotary mechanism 27.
- the cleaning chambers 28-31 can be rotated about an axis of rotation 32 with the rotary mechanism 27 .
- an electrode arrangement 33 is shown, which is used for electrostatic external charging and has eight finger electrodes 34-41.
- the finger electrodes 35, 37, 39, 41 are in the associated cleaning chambers 28, 29, 30, or 31 and can then be cleaned at the same time.
- the entire electrode arrangement 33 must first be pulled out of the cleaning device. This can be done either by the painting robot or by a separate lifting mechanism.
- the rotating mechanism 27 is then rotated in the direction of the double arrow, whereupon the other finger electrodes 34, 36, 38, 40 can dip into the cleaning chambers 28-31 in order to be cleaned therein.
- the invention is not limited to the preferred embodiments described above. Rather, the invention also includes a large number of variants and modifications, which also make use of the idea of the invention and therefore fall within the scope of protection.
- the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to in each case and in particular also without the features of the main claim. The invention thus comprises various aspects of the invention which are protected independently of one another.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021121552.8A DE102021121552A1 (de) | 2021-08-19 | 2021-08-19 | Reinigungsgerät für eine Elektrodenanordnung eines Zerstäubers, zugehöriges Betriebsverfahren und entsprechende Elektrodenanordnung |
| PCT/EP2022/071518 WO2023020820A1 (de) | 2021-08-19 | 2022-08-01 | Reinigungsgerät für eine elektrodenanordnung eines zerstäubers, zugehöriges betriebsverfahren und entsprechende elektrodenanordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4387773A1 true EP4387773A1 (de) | 2024-06-26 |
Family
ID=83059235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22758511.4A Pending EP4387773A1 (de) | 2021-08-19 | 2022-08-01 | Reinigungsgerät für eine elektrodenanordnung eines zerstäubers, zugehöriges betriebsverfahren und entsprechende elektrodenanordnung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20250121395A1 (de) |
| EP (1) | EP4387773A1 (de) |
| JP (1) | JP2024530713A (de) |
| CN (1) | CN117836067A (de) |
| DE (1) | DE102021121552A1 (de) |
| MX (1) | MX2024002048A (de) |
| WO (1) | WO2023020820A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024117796A1 (de) * | 2024-06-25 | 2026-01-08 | Dürr Systems Ag | Betriebsverfahren für eine elektrostatische Beschichtungsmittelaufladung und Beschichtungsanlage zur Ausführung des Betriebsverfahrens |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07251100A (ja) * | 1994-03-14 | 1995-10-03 | Abb Ransburg Kk | 塗装機用乾燥装置 |
| DE10110098A1 (de) | 2001-03-02 | 2002-09-05 | Karl-Heinz Baral | Reinigungsvorrichtung für Farbaustraggeräte |
| JP4091934B2 (ja) * | 2004-09-16 | 2008-05-28 | 新日本製鐵株式会社 | 厚鋼板の冷却方法 |
| DE102004061322A1 (de) * | 2004-12-20 | 2006-06-22 | Dürr Systems GmbH | Verfahren und Reinigungsgerät zum Reinigen einer Sprühvorrichtung |
| GB0625583D0 (en) * | 2006-12-21 | 2007-01-31 | Itw Ltd | Paint spray apparatus |
| US20130233356A1 (en) * | 2012-03-12 | 2013-09-12 | Lam Research Ag | Process and apparatus for treating surfaces of wafer-shaped articles |
| DE102012024040A1 (de) * | 2012-12-08 | 2014-06-26 | Volkswagen Aktiengesellschaft | Reinigungsvorrichtung für ein Lackierwerkzeug |
| DE102014016364A1 (de) * | 2014-11-05 | 2016-05-12 | Eisenmann Se | Reinigungsverfahren und Reinigungsvorrichtung für ein oder mehrere Teile eines Applikationssystems |
| JP6492225B2 (ja) * | 2016-11-22 | 2019-03-27 | クリスタル キャップ クリーナーズ インコーポレーテッドCrystal Cap Cleaners Inc. | 改良型スプレーガン洗浄装置 |
| DE102018118067A1 (de) | 2018-07-26 | 2020-01-30 | Ecoclean Gmbh | Reinigungsvorrichtung |
| DE102019135360A1 (de) | 2019-12-20 | 2021-06-24 | Dürr Systems Ag | Reinigungsvorrichtung zum Reinigen eines Düsenapplikators und entsprechendes Reinigungsverfahren |
-
2021
- 2021-08-19 DE DE102021121552.8A patent/DE102021121552A1/de active Pending
-
2022
- 2022-08-01 EP EP22758511.4A patent/EP4387773A1/de active Pending
- 2022-08-01 US US18/683,785 patent/US20250121395A1/en active Pending
- 2022-08-01 WO PCT/EP2022/071518 patent/WO2023020820A1/de not_active Ceased
- 2022-08-01 MX MX2024002048A patent/MX2024002048A/es unknown
- 2022-08-01 CN CN202280056646.4A patent/CN117836067A/zh active Pending
- 2022-08-01 JP JP2024510400A patent/JP2024530713A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021121552A1 (de) | 2023-02-23 |
| JP2024530713A (ja) | 2024-08-23 |
| MX2024002048A (es) | 2024-03-01 |
| WO2023020820A1 (de) | 2023-02-23 |
| US20250121395A1 (en) | 2025-04-17 |
| CN117836067A (zh) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1671706B1 (de) | Verfahren und Reinigungsgerät zum Reinigen einer Sprühvorrichtung | |
| DE69310026T2 (de) | Vorrichtung zum elektrostatischen Sprühen von pulverformigen Stoffen mit einem rotierenden Ionisierungskopf | |
| EP2643096B1 (de) | Reinigungsgerät und reinigungsbürste für einen zerstäuber und entsprechendes reinigungsverfahren | |
| EP0236794B1 (de) | Elektrostatische Sprüheinrichtung für Beschichtungspulver | |
| EP0245849B1 (de) | Zerstäuber zum elektrostatischen Beschichten von Gegenständen | |
| DE2937890C2 (de) | Vorrichtung zur Lackzuführung zu einem elektrostatischen Farbgeber | |
| WO2011138048A1 (de) | Beschichtungseinrichtung mit zertropfendem beschichtungsmittelstrahl | |
| DE10202711A1 (de) | Zerstäuber für die elektrostatische Serienbeschichtung von Werkstücken | |
| DE102005049234A1 (de) | Elektrostatischer Sprühapparat | |
| EP4387773A1 (de) | Reinigungsgerät für eine elektrodenanordnung eines zerstäubers, zugehöriges betriebsverfahren und entsprechende elektrodenanordnung | |
| EP0338314A1 (de) | Pulver-Rückgewinnungseinrichtung für Pulverbeschichtungsanlagen oder dergleichen | |
| DE3203729A1 (de) | Verfahren und vorrichtung zum elektrostatischen verspruehen von pesticiden | |
| DE102006053921B4 (de) | Lackiermaschine mit einem Zerstäuber und zugehöriges Betriebsverfahren | |
| WO2011057787A1 (de) | Vorrichtung, system, bauteil, verfahren und zusammensetzung zur vermeidung von ablagerungen eines entsorgungsmittels in beschichtungsanlagen | |
| EP3890894B1 (de) | Auffangvorrichtung für spülmedien eines zerstäubers | |
| DE3915549C2 (de) | ||
| DE102012024040A1 (de) | Reinigungsvorrichtung für ein Lackierwerkzeug | |
| EP0552454A2 (de) | Vorrichtung zum Reinigen von Filterelementen eines Gasfilters | |
| DE3709508A1 (de) | Vorrichtung zum elektrostatischen beschichten von werkstuecken | |
| WO2022101272A1 (de) | Beleuchtungseinrichtung für eine sprühpistole sowie sprühpistole mit einer derartigen beleuchtungseinrichtung | |
| DE1427677A1 (de) | Verfahren und Vorrichtung zum Farbspritzen | |
| EP0455107B1 (de) | Verfahren und Anlage zum serienweisen Beschichten von Werkstücken mit leitfähigem Beschichtungsmaterial | |
| DE102016113973A1 (de) | Abblasvorrichtung für Konstruktionsteile | |
| EP1588780B1 (de) | Fluidisierungsvorrichtung mit Elektroden für eine Pulverbeschichtungsanlage | |
| DE102008001104A1 (de) | Geschlossen vollperforierte Coating Trommel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20231211 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: APP_57003/2024 Effective date: 20241018 |