EP1250962A2 - Procédé de commande du fonctionnement d'une installation de revêtement électrostatique - Google Patents
Procédé de commande du fonctionnement d'une installation de revêtement électrostatique 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- voltage
- current
- voltage generator
- control system
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000009503 electrostatic coating Methods 0.000 title claims description 5
- 238000009434 installation Methods 0.000 title 1
- 238000000576 coating method Methods 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 24
- 238000013500 data storage Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 238000010422 painting Methods 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000003828 downregulation Effects 0.000 description 2
- 238000007591 painting process Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—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.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Photoreceptors In Electrophotography (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10119521A DE10119521A1 (de) | 2001-04-20 | 2001-04-20 | Verfahren zur Betriebssteuerung einer elektrostatischen Beschichtungsanlage |
| DE10119521 | 2001-04-20 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1250962A2 true EP1250962A2 (fr) | 2002-10-23 |
| EP1250962A3 EP1250962A3 (fr) | 2005-03-16 |
| EP1250962B1 EP1250962B1 (fr) | 2006-07-26 |
Family
ID=7682173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02007857A Expired - Lifetime EP1250962B1 (fr) | 2001-04-20 | 2002-04-08 | Procédé de commande du fonctionnement d'une installation de revêtement électrostatique |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1250962B1 (fr) |
| AT (1) | ATE333945T1 (fr) |
| DE (2) | DE10119521A1 (fr) |
| ES (1) | ES2267882T3 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105738A1 (fr) | 2009-03-17 | 2010-09-23 | Dürr Systems GmbH | Procédé de surveillance et dispositif de surveillance pour une installation de revêtement électrostatique |
| EP2332658B1 (fr) | 2009-12-07 | 2015-07-08 | Dürr Systems GmbH | Contrôleur haute tension avec surveillance et diagnostics améliorés |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009051877A1 (de) | 2009-11-04 | 2011-05-05 | Dürr Systems GmbH | Beschichtungsverfahren und Beschichtungsanlage mit dynamischer Anpassung der Zerstäuberdrehzahl und der Hochspannung |
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 (fr) | 1987-03-23 | 1997-01-02 | Dürr GmbH | Procédé de commande d'une installation de revêtement électrostatique |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2144202B2 (de) * | 1971-09-03 | 1975-02-13 | Emil 7400 Tuebingen Zeile | Verfahren und einrichtung zur verhinderung einer ueberschlagbildung in anlagen mit hochspannungsfeldern, insbesondere farbspritzanlagen und pulverspruehanlagen |
| DE3416093A1 (de) * | 1984-04-30 | 1985-10-31 | J. Wagner AG, Altstätten | Elektronischer hochspannungserzeuger fuer elektrostatische spruehgeraete |
| DE19511254A1 (de) * | 1995-03-27 | 1996-10-02 | Gema Volstatic Ag | Elektrostatische Sprühbeschichtungseinrichtung |
| DE19915374A1 (de) * | 1999-04-06 | 2000-10-12 | Schnier Elektrostatik Gmbh | Verfahren und Schaltungsanordnung zur Sicherheitsüberprüfung einer elektrostatischen Sprühanlage |
-
2001
- 2001-04-20 DE DE10119521A patent/DE10119521A1/de not_active Withdrawn
-
2002
- 2002-04-08 AT AT02007857T patent/ATE333945T1/de not_active IP Right Cessation
- 2002-04-08 EP EP02007857A patent/EP1250962B1/fr not_active Expired - Lifetime
- 2002-04-08 DE DE50207590T patent/DE50207590D1/de not_active Expired - Lifetime
- 2002-04-08 ES ES02007857T patent/ES2267882T3/es 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 (fr) | 1987-03-23 | 1997-01-02 | Dürr GmbH | Procédé de commande d'une installation de revêtement électrostatique |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105738A1 (fr) | 2009-03-17 | 2010-09-23 | Dürr Systems GmbH | Procédé de surveillance et dispositif de surveillance pour une installation de revêtement électrostatique |
| CN102355955A (zh) * | 2009-03-17 | 2012-02-15 | 杜尔系统有限责任公司 | 用于静电喷涂装置的监控方法和监控设备 |
| JP2012520751A (ja) * | 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 | 静電塗装プラント用監視法及び監視装置 |
| EP2408569B1 (fr) | 2009-03-17 | 2015-05-06 | Dürr Systems GmbH | Procédé de surveillance et dispositif de surveillance pour une installation de revêtement électrostatique |
| US9043169B2 (en) | 2009-03-17 | 2015-05-26 | Durr Systems Gmbh | Monitoring method and monitoring device for an electrostatic coating plant |
| CN102355955B (zh) * | 2009-03-17 | 2015-09-09 | 杜尔系统有限责任公司 | 用于静电喷涂装置的监控方法和监控设备 |
| EP2332658B1 (fr) | 2009-12-07 | 2015-07-08 | Dürr Systems GmbH | Contrôleur haute tension avec surveillance et diagnostics améliorés |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE333945T1 (de) | 2006-08-15 |
| DE50207590D1 (de) | 2006-09-07 |
| EP1250962B1 (fr) | 2006-07-26 |
| ES2267882T3 (es) | 2007-03-16 |
| DE10119521A1 (de) | 2002-10-24 |
| EP1250962A3 (fr) | 2005-03-16 |
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