EP1250962A2 - Method to control operation of an electrostatic coating installation - Google Patents
Method to control operation of an electrostatic coating installation Download PDFInfo
- Publication number
- EP1250962A2 EP1250962A2 EP02007857A EP02007857A EP1250962A2 EP 1250962 A2 EP1250962 A2 EP 1250962A2 EP 02007857 A EP02007857 A EP 02007857A EP 02007857 A EP02007857 A EP 02007857A EP 1250962 A2 EP1250962 A2 EP 1250962A2
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- EP
- European Patent Office
- Prior art keywords
- coating
- voltage
- current
- voltage generator
- control system
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- 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.)
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- 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
- B05B5/08—Plant for applying liquids or other fluent materials to objects
- B05B5/10—Arrangements for supplying power, e.g. charging power
Definitions
- the invention relates to a method for operational control an electrostatic coating system and such plant suitable for carrying out the method.
- an electrostatic coating system and such plant suitable for carrying out the method.
- electrostatic Coating systems are known to be high voltage generators of cascade type, whose control system during the coating either the voltage or that of the atomizer supplied current can keep constant (US 4,737,887, EP 0 283 936 B2).
- the cascades of the known coating systems can be between Constant voltage mode and constant current mode switched become. Depending on the setting, changes to the maximum permitted voltage or the maximum permitted Current possible by manual switching.
- the well-known systems do not always allow the best combinations of voltage and current for optimal charging of the sprayed Coating material, especially when there are operating conditions to change.
- the invention has for its object a better adaptation the coating device supplied voltage and To allow current values to the respective operating conditions. In particular, for example, if only a small Voltage is possible for the coating device Compensation to be able to supply the highest possible current, and vice versa.
- variable Setting limit values for both current and the voltage always the best possible product from these parameters (UxI) set for optimal charging and as far as possible can be met.
- UxI variable Setting limit values
- one parameter e.g. the Voltage
- the highest possible limit is specified as the setpoint be adhered to during the coating process as long as the limit value for each other parameters (here the current) are not exceeded becomes.
- the parameter on the predetermined limit or setpoint remain constant, he can but also fluctuate due to the operating conditions only "quasi" constant).
- Parameters can be the parameter on the setpoint regulated down to the required extent by the control circuit of the cascade so it sinks because of this active Control below its own limit and the previous one Setpoint from.
- the limit value of at least one of the two parameters for adaptation the coating company to different coating devices Coating tasks or other operating conditions be changed.
- the change can be gradual by automatically switching the cascade through the higher-level control system of the plant.
- the limit for the current is now reduced and as soon as it is achieved in operation, exceeding by down-regulation which prevents tension. Instead of the previous one stiff or "hard” control characteristic curve results here a "softer" regulation.
- the drawing shows in the lower part the three predetermined current limit values Imax 1 , Imax 2 and Imax 3, which are smaller along the time axis t from stage to stage, and in the upper part the associated maximum values Umax 1 , Umax 2 and Umax 3 of the voltage U, their the actual course of time is shown.
- the mentioned exterior painting takes place until time t 1 . If the current limit is then reduced to Imax 2 for painting other areas, assuming that the limit is reached and exceeded, the voltage inevitably drops back to the corresponding value Umax 2 , since it regulates to the same extent from the cascade control system becomes.
- the current limit is then reduced to an even lower value Imax 3 at time t 2 and consequently the correspondingly low voltage Umax 3 is set as shown.
- the setpoint and limit values for voltage and current can be used with the system described here by stored data of the parent Program control system of the coating system specified and be accessed to control the cascade.
- different Available limit values can also be in one own data storage of the control system of the high voltage generator filed and as needed, d. H. depending on the desired Characteristic curve can be retrieved from the higher-level control.
- Control operations are based on both the actual voltage Atomizers as well as their current constantly measured and with the predetermined target and limit values compared.
- For comparison and as an actuator for down-regulation when reaching the Current or voltage limit values are, for example, those in the control system to control the high voltage per se Operational amplifier suitable.
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Betriebssteuerung einer elektrostatischen Beschichtungsanlage sowie eine solche zur Durchführung des Verfahrens geeignete Anlage. Insbesondere kann es sich um eine Anlage für die elektrostatische Serienbeschichtung von Werkstücken wie Fahrzeugkarossen handeln.The invention relates to a method for operational control an electrostatic coating system and such plant suitable for carrying out the method. In particular can be a system for electrostatic series coating of workpieces like vehicle bodies.
Zur Spannungs- und Stromversorgung der Zerstäuber elektrostatischer Beschichtungsanlagen werden bekanntlich Hochspannungserzeuger vom Kaskadentyp verwendet, deren Regelsystem während der Beschichtung entweder die Spannung oder den dem Zerstäuber zugeführten Strom konstant halten kann (US 4 737 887, EP 0 283 936 B2).For the voltage and power supply of the atomizers more electrostatic Coating systems are known to be high voltage generators of cascade type, whose control system during the coating either the voltage or that of the atomizer supplied current can keep constant (US 4,737,887, EP 0 283 936 B2).
Bei den meisten elektrostatischen Lackiervorgängen ist erwünscht, dass die Leistung und die Regelung der Hochspannungskaskade so ausgelegt sind, dass bei konstanter Spannung der notwendige Spitzenstrom oder bei konstantem Strom die notwendige Spitzenspannung in jeder Lackiersituation zur Verfügung steht. Dies kann durch "steifes", dynamisches Regelungsverhalten erreicht werden. Nur in bestimmten Fällen, z. B. bei gefährlicher Annäherung des Zerstäubers an das geerdete Werkstück oder auch bei der Beschichtung von Werkstückteilen, die zu Hochspannungsüberschlägen oder zu starker Überbeschichtung an bestimmten Flächen neigen, steigen Strom oder Spannung auf Grenzwerte, die aufgrund der Leistungsfähigkeit der Kaskade nicht mehr überschritten werden können, so dass die Regelung "einbricht" und der Sollwert nicht mehr erreicht wird, weil die Leistung der Kaskade keinen höheren Strom- oder Spannungswert zulässt. Zur Vermeidung von Gefahren kann die Kaskade vor dem Überschreiten von Grenzwerten auch abgeschaltet werden.In most electrostatic painting processes, it is desirable that the performance and regulation of the high voltage cascade are designed so that at constant voltage the necessary peak current or the necessary at constant current Peak tension available in every painting situation stands. This can be due to "rigid", dynamic control behavior can be achieved. Only in certain cases, e.g. B. for dangerous Approach of the atomizer to the earthed workpiece or also in the coating of workpiece parts that too high voltage flashovers or too strong overcoating on certain surfaces, current or voltage rise Limits due to the performance of the cascade can no longer be exceeded, so the scheme "collapses" and the setpoint is no longer reached because the performance of the cascade does not have a higher current or voltage value allows. To avoid danger, the cascade can when limit values are exceeded can also be switched off.
Die Kaskaden der bekannten Beschichtungsanlagen können zwischen Spannungskonstanzbetrieb und Stromkonstanzbetrieb umgeschaltet werden. Je nach Einstellung sind auch Änderungen der maximal zugelassenen Spannung oder des maximal zugelassenen Stroms durch manuelles Umschalten möglich. Die bekannten Systeme ermöglichen nicht immer die jeweils besten Kombinationen von Spannung und Strom zur optimalen Aufladung des abgesprühten Beschichtungsmaterials, insbesondere wenn sich Betriebsbedingungen ändern.The cascades of the known coating systems can be between Constant voltage mode and constant current mode switched become. Depending on the setting, changes to the maximum permitted voltage or the maximum permitted Current possible by manual switching. The well-known systems do not always allow the best combinations of voltage and current for optimal charging of the sprayed Coating material, especially when there are operating conditions to change.
Der Erfindung liegt die Aufgabe zugrunde, eine bessere Anpassung der Beschichtungsvorrichtung zugeführten Spannungs- und Stromwerte an die jeweiligen Betriebsbedingungen zu ermöglichen. Insbesondere soll beispielsweise dann, wenn nur eine geringe Spannung möglich ist, der Beschichtungsvorrichtung zum Ausgleich ein möglichst hoher Strom zuführbar sein, und umgekehrt.The invention has for its object a better adaptation the coating device supplied voltage and To allow current values to the respective operating conditions. In particular, for example, if only a small Voltage is possible for the coating device Compensation to be able to supply the highest possible current, and vice versa.
Diese Aufgabe wird durch die Merkmale der Patentansprüche gelöst.This object is solved by the features of the claims.
Die Erfindung beruht auf der Erkenntnis, dass durch variable Einstellung von Grenzwerten sowohl für den Strom als auch für die Spannung stets das bestmögliche Produkt aus diesen Parametern (UxI) für optimale Aufladung eingestellt und soweit wie möglich eingehalten werden kann. Dies wird im Gegensatz zu bekannten Systemen nicht einfach durch Stromkonstanzregelung oder Spannungskonstanzregelung erreicht, sondern durch die Vorgabe definierter Werte sowohl der Spannung als auch des Stroms. In der Regel kann für den einen Parameter (z. B. die Spannung) ein möglichst hoher Grenzwert als Sollwert vorgegeben werden, der während des Beschichtungsvorgangs eingehalten wird, solange der ebenfalls vorgegebene Grenzwert für den jeweils anderen Parameter (hier also des Stroms) nicht überschritten wird. Während dieser Zeit kann der Parameter auf dem vorgegebenen Grenz- oder Sollwert konstant bleiben, er kann aber auch aufgrund der Betriebsbedingungen schwanken (ist also nur "quasi" konstant). Bei Erreichen des Grenzwerts des anderen Parameters kann der auf dem Sollwert befindliche Parameter von der Regelschaltung der Kaskade im erforderlichen Maße heruntergeregelt werden, er sinkt also aufgrund dieser aktiven Steuerung unter seinen eigenen Grenzwert und den vorherigen Sollwert ab.The invention is based on the knowledge that variable Setting limit values for both current and the voltage always the best possible product from these parameters (UxI) set for optimal charging and as far as possible can be met. This is in contrast to known ones Systems not simply through constant current regulation or constant voltage regulation achieved, but through the Specification of defined values for both the voltage and the Current. As a rule, one parameter (e.g. the Voltage), the highest possible limit is specified as the setpoint be adhered to during the coating process as long as the limit value for each other parameters (here the current) are not exceeded becomes. During this time the parameter on the predetermined limit or setpoint remain constant, he can but also fluctuate due to the operating conditions only "quasi" constant). When the other's limit is reached Parameters can be the parameter on the setpoint regulated down to the required extent by the control circuit of the cascade so it sinks because of this active Control below its own limit and the previous one Setpoint from.
Erfindungsgemäß kann insbesondere durch Signale eines den Hochspannungserzeuger steuernden übergeordneten Steuersystems der Grenzwert mindestens eines der beiden Parameter zur Anpassung des Beschichtungsbetriebes an unterschiedliche Beschichtungsvorrichtungen, Beschichtungsaufgaben oder sonstige Betriebsbedingungen geändert werden. Die Änderung kann stufenweise durch automatisches Umschalten der Kaskade durch das übergeordnete Steuersystem der Anlage erfolgen. Beispielsweise kann es bei der Außenlackierung von Fahrzeugkarossen zweckmäßig sein, einen relativ hohen Stromgrenzwert vorzugeben, der im Betrieb nicht erreicht wird, da hier relativ niedrige Ströme typisch sind, so dass die Spannung auf ihrem vorgegebenen Grenz- oder Sollwert bleibt und sich (quasi) Spannungskonstanz einstellt. Wenn nun anschließend z. B. ein Innenbereich der Karosse lackiert werden soll, ergeben sich andere Betriebsbedingungen, da die dort typischen geringen Abstände zwischen Zerstäuber und Werkstück nur geringe Spannungen zulassen. Daher wird nun der Grenzwert für den Strom herabgesetzt und, sobald er im Betrieb erreicht wird, das Überschreiten durch Herunterregeln der Spannung verhindert. Statt der vorherigen steifen oder "harten" Regelkennlinie ergibt sich hier also eine "weichere" Regelung.According to the invention, in particular by means of signals High-voltage generator controlling superordinate control system the limit value of at least one of the two parameters for adaptation the coating company to different coating devices, Coating tasks or other operating conditions be changed. The change can be gradual by automatically switching the cascade through the higher-level control system of the plant. For example it can be useful for the exterior painting of vehicle bodies be a relatively high current limit that is not reached during operation, since the currents here are relatively low are typical so that the tension is at its given Limit or setpoint remains and (quasi) constant voltage established. If now z. B. an interior of the Body should be painted, there are other operating conditions, because the typical small distances between Allow atomizer and workpiece only low voltages. Therefore the limit for the current is now reduced and as soon as it is achieved in operation, exceeding by down-regulation which prevents tension. Instead of the previous one stiff or "hard" control characteristic curve results here a "softer" regulation.
Ein anderes Beispiel ist der Wechsel zwischen Rotations- und Luftzerstäubern an einer-Beschichtungsmaschine. Auch in diesem Fall kann es zweckmäßig sein, in der hier beschriebenen Weise die Regelkennlinie zwischen "weich" und "hart" (Festhalten des Parameters auf dem Sollwert) umzuschalten.Another example is the alternation between rotation and Air atomizers on a coating machine. Also in this Case it may be appropriate in the manner described here the control characteristic between "soft" and "hard" (holding the Parameters on the setpoint).
Das Beispiel der Beschichtung verschiedener Werkstückbereiche wird durch die Zeichnung erläutert, in der ein auf drei Stufen erweiterter Fall dargestellt ist.The example of the coating of different workpiece areas is illustrated by the drawing, in one on three levels extended case is shown.
Die Zeichnung zeigt im unteren Teil die drei vorgegebenen, längs der Zeitachse t nacheinander von Stufe zu Stufe kleineren Stromgrenzwerte Imax1, Imax2 und Imax3 und im oberen Teil die zugehörigen Maximalwerte Umax1, Umax2 bzw. Umax3 der Spannung U, deren sich tatsächlich ergebender zeitlicher Verlauf dargestellt ist. Bis zum Zeitpunkt t1 erfolgt die erwähnte Außenlackierung. Wenn dann zur Lackierung anderer Bereiche die Stromgrenze auf Imax2 herabgesetzt wird, geht unter der Annahme, dass die Grenze erreicht wird und überschritten würde, gleichzeitig die Spannung zwangsläufig auf den entsprechenden Wert Umax2 zurück, da sie im entsprechenden Maße vom Regelsystem der Kaskade heruntergeregelt wird. Zur Lackierung eines weiteren Bereichs z. B. im Inneren einer Karosse, bei dem mit noch geringerem Abstand gearbeitet werden muss, wird dann zur Zeit t2 die Stromgrenze auf einen noch niedrigeren Wert Imax3 herabgesetzt und folglich die darstellungsgemäß nur noch geringe entsprechende Spannung Umax3 eingestellt. The drawing shows in the lower part the three predetermined current limit values Imax 1 , Imax 2 and Imax 3, which are smaller along the time axis t from stage to stage, and in the upper part the associated maximum values Umax 1 , Umax 2 and Umax 3 of the voltage U, their the actual course of time is shown. The mentioned exterior painting takes place until time t 1 . If the current limit is then reduced to Imax 2 for painting other areas, assuming that the limit is reached and exceeded, the voltage inevitably drops back to the corresponding value Umax 2 , since it regulates to the same extent from the cascade control system becomes. To paint another area z. B. in the interior of a body in which work must be carried out with an even smaller distance, the current limit is then reduced to an even lower value Imax 3 at time t 2 and consequently the correspondingly low voltage Umax 3 is set as shown.
Der an sich ebenfalls vorgegebene Grenzwert für die Spannung wird währenddessen nicht erreicht. Aber auch in der Zeit nach t2 wird mit dem unter den gegebenen Umständen, die nur niedrige Spannungen zulassen, maximal möglichen Produkt aus Spannung und Strom beschichtet, da der maximal zulässige Strom zur Verfügung steht.The limit value for the voltage, which is also specified per se, is not reached during this time. But even in the time after t 2 , the maximum possible product of voltage and current is coated under the given circumstances, which only allow low voltages, since the maximum permissible current is available.
Statt der beschriebenen Änderungen der Stromgrenzwerte kann die übergeordnete Steuerung auch den vorgegebenen Spannungsgrenzwert ändern (nicht dargestellt), worauf der Strom diesen Änderungen dann in ähnlicher Weise folgen kann wie bei dem dargestellten Beispiel die Spannung den Stromgrenzwerten.Instead of the changes in the current limit values described above the higher-level control also the specified voltage limit change (not shown), whereupon the current this Changes can then follow in a similar way to that example shown the voltage the current limit values.
Durch Definition der Regelungsvariablen können fast beliebige Kennlinien erstellt werden, die an den jeweiligen Anwendungsfall oder sonstige Betriebsbedingungen angepasst sind, wie Lackierart, Zerstäuber, Werkstoff, Lackierabstand, Lackiergeschwindigkeit, Werkstückgeometrie, Lackart, Luftfeuchte usw.By defining the control variables, almost any Characteristic curves are created that match the respective application or other operating conditions are adapted, such as Type of painting, atomizer, material, painting distance, painting speed, Workpiece geometry, type of paint, air humidity, etc.
Anstelle oder auch zusätzlich zu dem erläuterten Stufenbetrieb ist es ferner möglich, die jeweils zugelassenen Grenzwerte während der Beschichtung (beispielsweise also auch während der Abschnitte vor, zwischen und/oder nach t1 und t2 gemäß der Zeichnung) zur Optimierung des Beschichtungsprozesses selbsttätig zu variieren. Mit anderen Worten erfolgt dann also eine automatische Kennlinienoptimierung während des Lackierprozesses.Instead of or in addition to the step operation described, it is also possible to automatically vary the respectively permitted limit values during the coating (for example also during the sections before, between and / or after t 1 and t 2 according to the drawing) in order to optimize the coating process , In other words, automatic characteristic curve optimization then takes place during the painting process.
Die Soll- und Grenzwerte für Spannung und Strom können bei dem hier beschriebenen System durch gespeicherte Daten des übergeordneten Programmsteuersystems der Beschichtungsanlage vorgegeben und zur Steuerung der Kaskade abgerufen werden. Unterschiedliche verfügbare Grenzwerte können aber auch in einem eigenen Datenspeicher des Regelsystems des Hochspannungserzeugers abgelegt und je nach Bedarf, d. h. je nach gewünschter Kennlinie von der übergeordneten Steuerung abgerufen werden.The setpoint and limit values for voltage and current can be used with the system described here by stored data of the parent Program control system of the coating system specified and be accessed to control the cascade. different Available limit values can also be in one own data storage of the control system of the high voltage generator filed and as needed, d. H. depending on the desired Characteristic curve can be retrieved from the higher-level control.
Die Betriebsweise der Hochspannungskaskade und ihres Regelsystems sind an sich bekannt. Für die erfindungsgemäß erforderlichen Regelvorgänge werden sowohl die tatsächliche Spannung am Zerstäuber als auch dessen Strom ständig gemessen und mit den vorgegebenen Soll- und Grenzwerten verglichen. Für den Vergleich und als Stellglied zum Herunterregeln bei Erreichen der Strom- oder Spannungsgrenzwerte sind beispielsweise die im Regelsystem zur Ansteuerung der Hochspannung an sich üblichen Operationsverstärker geeignet.The mode of operation of the high-voltage cascade and its control system are known per se. For those required according to the invention Control operations are based on both the actual voltage Atomizers as well as their current constantly measured and with the predetermined target and limit values compared. For comparison and as an actuator for down-regulation when reaching the Current or voltage limit values are, for example, those in the control system to control the high voltage per se Operational amplifier suitable.
Claims (7)
dadurch gekennzeichnet, dass während eines Beschichtungsvorgangs nicht zu überschreitende Grenzwerte sowohl für die Spannung als auch für den Strom durch den Hochspannungserzeuger steuernde Datensignale eines Steuersystems vorgegeben werden,
und dass bei Erreichen des Grenzwerts eines dieser Parameter dessen Überschreiten durch selbsttätiges Herabsetzen des jeweils anderen Parameters während der weiteren Beschichtung verhindert wird.Method for operating control of an electrostatic coating system, the coating device of which is supplied by a high-voltage generator with current and voltage controllable variable,
characterized in that limit values not to be exceeded during a coating process are specified for a control system for both the voltage and the current through the high-voltage generator,
and that when the limit value of one of these parameters is reached, its exceeding is prevented by automatically reducing the other parameter during the further coating.
und mit einem Steuersystem zum Steuern des Hochspannungserzeugers,
dadurch gekennzeichnet, dass das Steuersystem oder der Hochspannungserzeuger ein Datenspeichersystem enthält, in dem unterschiedliche Grenzwerte sowohl für die von dem Hochspannungserzeuger zu erzeugende Spannung als auch für den der Beschichtungsvorrichtung zuzuführenden Strom abgelegt sind,
und dass mit den gespeicherten, von dem Steuersystem auswählbaren Spannungs- und Stromgrenzwertdaten die Stromerzeugungsschaltung des Hochspannungserzeugers steuerbar ist.Coating system for the serial coating of workpieces with an electrostatic coating device which is connected to or can be connected to a high-voltage generator or contains this for charging the sprayed-off coating material,
and with a control system for controlling the high voltage generator,
characterized in that the control system or the high-voltage generator contains a data storage system in which different limit values are stored both for the voltage to be generated by the high-voltage generator and for the current to be supplied to the coating device,
and that the power generation circuit of the high-voltage generator can be controlled with the stored voltage and current limit value data that can be selected by the control system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10119521A DE10119521A1 (en) | 2001-04-20 | 2001-04-20 | Process for operating control of an electrostatic coating system |
| DE10119521 | 2001-04-20 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1250962A2 true EP1250962A2 (en) | 2002-10-23 |
| EP1250962A3 EP1250962A3 (en) | 2005-03-16 |
| EP1250962B1 EP1250962B1 (en) | 2006-07-26 |
Family
ID=7682173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02007857A Expired - Lifetime EP1250962B1 (en) | 2001-04-20 | 2002-04-08 | Method to control operation of an electrostatic coating installation |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1250962B1 (en) |
| AT (1) | ATE333945T1 (en) |
| DE (2) | DE10119521A1 (en) |
| ES (1) | ES2267882T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105738A1 (en) | 2009-03-17 | 2010-09-23 | Dürr Systems GmbH | Monitoring method and monitoring device for an electrostatic coating plant |
| EP2332658B1 (en) | 2009-12-07 | 2015-07-08 | Dürr Systems GmbH | High voltage controller with improved monitoring and diagnoctics |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009051877A1 (en) | 2009-11-04 | 2011-05-05 | Dürr Systems GmbH | Coating process and coating system with dynamic adjustment of the atomizer speed and the high voltage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737887A (en) | 1985-10-02 | 1988-04-12 | Sames S.A. | Electrostatic spray device provided with electric-arc protection means |
| EP0283936B2 (en) | 1987-03-23 | 1997-01-02 | Dürr GmbH | Process for controlling an electrostatic coating installation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2144202B2 (en) * | 1971-09-03 | 1975-02-13 | Emil 7400 Tuebingen Zeile | Automatic high voltage regulator - for high voltage field devices protected against overloading, has voltage selector and spray distance selector |
| DE3416093A1 (en) * | 1984-04-30 | 1985-10-31 | J. Wagner AG, Altstätten | ELECTRONIC HIGH VOLTAGE GENERATOR FOR ELECTROSTATIC SPRAYERS |
| DE19511254A1 (en) * | 1995-03-27 | 1996-10-02 | Gema Volstatic Ag | Electrostatic spray coating device |
| DE19915374A1 (en) * | 1999-04-06 | 2000-10-12 | Schnier Elektrostatik Gmbh | Method and circuit arrangement for the safety check of an electrostatic spraying system |
-
2001
- 2001-04-20 DE DE10119521A patent/DE10119521A1/en not_active Withdrawn
-
2002
- 2002-04-08 DE DE50207590T patent/DE50207590D1/en not_active Expired - Lifetime
- 2002-04-08 ES ES02007857T patent/ES2267882T3/en not_active Expired - Lifetime
- 2002-04-08 AT AT02007857T patent/ATE333945T1/en not_active IP Right Cessation
- 2002-04-08 EP EP02007857A patent/EP1250962B1/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737887A (en) | 1985-10-02 | 1988-04-12 | Sames S.A. | Electrostatic spray device provided with electric-arc protection means |
| EP0283936B2 (en) | 1987-03-23 | 1997-01-02 | Dürr GmbH | Process for controlling an electrostatic coating installation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105738A1 (en) | 2009-03-17 | 2010-09-23 | Dürr Systems GmbH | Monitoring method and monitoring device for an electrostatic coating plant |
| CN102355955A (en) * | 2009-03-17 | 2012-02-15 | 杜尔系统有限责任公司 | Monitoring method and monitoring device for an electrostatic coating plant |
| JP2012520751A (en) * | 2009-03-17 | 2012-09-10 | デュール システムズ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Monitoring method and monitoring device for electrostatic coating plant |
| EP2408569B1 (en) | 2009-03-17 | 2015-05-06 | Dürr Systems GmbH | Monitoring method and monitoring device for an electrostatic coating plant |
| US9043169B2 (en) | 2009-03-17 | 2015-05-26 | Durr Systems Gmbh | Monitoring method and monitoring device for an electrostatic coating plant |
| CN102355955B (en) * | 2009-03-17 | 2015-09-09 | 杜尔系统有限责任公司 | For method for supervising and the watch-dog of electrostatic spraying apparatus |
| EP2332658B1 (en) | 2009-12-07 | 2015-07-08 | Dürr Systems GmbH | High voltage controller with improved monitoring and diagnoctics |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE333945T1 (en) | 2006-08-15 |
| ES2267882T3 (en) | 2007-03-16 |
| DE10119521A1 (en) | 2002-10-24 |
| DE50207590D1 (en) | 2006-09-07 |
| EP1250962B1 (en) | 2006-07-26 |
| EP1250962A3 (en) | 2005-03-16 |
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