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EP1369182B1 - Installation de peinture - Google Patents

Installation de peinture Download PDF

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Publication number
EP1369182B1
EP1369182B1 EP03011070A EP03011070A EP1369182B1 EP 1369182 B1 EP1369182 B1 EP 1369182B1 EP 03011070 A EP03011070 A EP 03011070A EP 03011070 A EP03011070 A EP 03011070A EP 1369182 B1 EP1369182 B1 EP 1369182B1
Authority
EP
European Patent Office
Prior art keywords
line
return
paint
recited
pressure
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.)
Expired - Lifetime
Application number
EP03011070A
Other languages
German (de)
English (en)
Other versions
EP1369182A2 (fr
EP1369182A3 (fr
Inventor
Alexander Dipl.-Ing. Rüger
Armin Hoderlein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Priority to SI200330327T priority Critical patent/SI1369182T1/sl
Publication of EP1369182A2 publication Critical patent/EP1369182A2/fr
Publication of EP1369182A3 publication Critical patent/EP1369182A3/fr
Application granted granted Critical
Publication of EP1369182B1 publication Critical patent/EP1369182B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations

Definitions

  • the invention relates to a device for painting objects, such as motor vehicle bodies, with a ring-guided, a circulation pump having color line which connects a Farbvorrats- or -zirkulations actuallyer with a job, usually a paint booth, and leading to the job leading and one of the workstation for Farbvorrats- or -zirkulations interchangeer recirculating return, wherein between the flow and return a device for producing a pressure difference is provided and wherein several sampling points are provided via stubs between flow and return at the work, so that the stubs preferably largely dead space also during prolonged breaks in color flow.
  • Such a painting device is known for example from DE-A-101 17 917.
  • Waterborne basecoats behave structurally viscous or tixothropic, which means that they become thinner, ie less viscous, as the flow speed increases, or become viscous or highly viscous at low flow rate or when the lacquer "stands" within the line, as a result of which segregation, that is to say a decrease in flow Pigment ingredients or the like, is reliably prevented.
  • Solvent paints on the other hand, behave physically like water. If they "stand” in a pipe, there are unwanted segregation phenomena, which must be avoided at all costs. Therefore, it is endeavored to always circulate solvent paints or inks in a line system and to provide a possible dead space-free routing within a ring-guided management system.
  • Tichelmann systems which is understood to mean a ring-shaped color line system with multiple tapping points, in which the line sections, including the branch or branch lines, to the tapping points down to immediately Always be circulated in front of a spray gun or a mechanical extraction point.
  • Known devices are designed such that supply-side line sections are formed with a smaller and return-side line sections with a larger inner line diameter.
  • further downstream pipe sections have a larger inner pipe diameter than upstream pipe sections.
  • the pressure dropping along a flow path due to the flow resistance should be taken into account and achieved so that the same pressure difference drops as far as possible at a respective removal point, so that a flow velocity corresponding to the requirements is ensured in the circulation mode, but also in the painting operation.
  • the implementation in practice especially in systems with multiple outlets designed as very problematic.
  • the usability of standardized components is difficult, since depending on the length of the cable and the arrangement of the sampling points certain line internal diameter must be used.
  • the vote at the individual sampling points and their branch or branch lines is difficult because undefined flow rates at the sampling points already result as a result of different hose lengths, for example, in manual sampling points.
  • the decommissioning of a sampling point can lead to changed conditions at the other sampling points.
  • the present invention is the Object on to improve a device of the type mentioned above so that the difficulties described above do not occur, in particular the production, adjustment and tuning of the system and the operation of the system is simplified.
  • This pressure difference in the area of a sampling point over that of the flow leading branch or branch line drops down to the re-opening in the return, namely responsible for the flow through the branch or branch line in the circulation mode or causal.
  • On the line inner cross-section can then be closed by the flow rate, which can be easily determined by a removal in a measuring vessel, on the flow rate.
  • flow rates of 0.1 to 0.3 m / s for water-based paints and 0.3 to 0.7 m / s for solvent-based paints prove to be expedient.
  • the invention thus proposes to set the desired pressure difference in the region of the removal point, regardless of the pressure setting in the region of a respective removal point at the flow and at the return pressure, provided that the pressure difference is only large enough.
  • the invention proves to be advantageous in that it is possible to resort to standardized components during the production of the system or the annularly guided ink duct. Even the previous planning is simplified, since no changing cable cross sections have to be considered.
  • a certain operating pressure for example 20 bar
  • a very low return pressure can be specified on the return side.
  • the pressure dropping there can now be adjusted individually at each sampling point. This pressure then preferably remains constant over time. He can, however, In particular, if the supply pressure changes, for example because more extraction point has been added or individual removal points have been removed, it can easily be readjusted.
  • the device for producing a pressure difference between flow and return is provided in a branching off from the paint line and again leading back to this line section.
  • Flow and return can therefore be cleaned together by introducing or removing a displacer (pig).
  • the color guide via the mentioned branching and returning to the color line line section, in which said device for manufacturing and maintaining, so a pressure control device or a throttle device, is provided.
  • the mentioned line section is preferably attached by means of a piggable 3/2-way branching device to the color line, wherein the branching device is preferably formed by a ball valve.
  • the pressure control device comprises a return flow regulator, which is arranged with respect to the removal point downstream or return side. Such a return regulator then keeps the pressure on its flow side, ie on the side of the extraction point, at a defined value relative to the return side.
  • a lock device for introducing and discharging a line internal diameter correspondingly formed displacement (pig) is provided for cleaning the paint line.
  • FIG. 1 shows a painting device according to the invention, which has an indicated paint booth 2, in which a plurality of removal points are provided, namely manually operated hand-off points 4 as well as associated with a painting machine so-called automated tapping points 6.
  • the paint booth 2 and the removal points 4, 6 are about an annularly guided paint line 8 connected to a circulation container 10 for paint or paint.
  • the circulation container 10 is located in a separate from the spray booth 2 indicated color mixing space 12.
  • this color mixing chamber 12 is also a paint or the color containing delivery container 14, from the color passes through a Farbzugrintechnisch in the circulation tank 10 and can be nachge admirt if necessary , Furthermore, a circulation pump 16 is provided in the ring-shaped color line 8, which color from the circulation tank 10 to the paint booth 2 at the respective removal points 4, 6 passes.
  • the line section from the circulation tank 10 to a device to be described later 18 for producing a pressure difference is used as a lead 20 of the paint line. 8 designated. From the device 18 from the color line 8 leads back to the respective removal points 4, 6 over back to the circulation tank 10. This line section is called return 22.
  • a respective extraction point 4, 6 is connected to the flow 20 and to the return 22, so it is arranged between flow and return.
  • a spur line 24 to the immediate removal point, for example, a hand extraction point with a spray gun out.
  • another branch line 26 leads from the immediate removal point to return 22. If between 22 flow and return 22 a sufficient pressure difference in the circulation mode or in the paint operation is maintained, color is from the flow 20 via the line 24 to the extraction point and on the Sting line 26 back into the return 22 pass.
  • the stub lines 24, 26 and optionally subsequent thereto hose lines 28, 30 preferably lead substantially dead space up to an indicated valve means 32 of the sampling point, so that at least almost the entire color can be circulated in the circulation, so that at any point paint or paint in one Lead "stands" and leads to unwanted demixing phenomena.
  • a pressure control device 32 is provided in the form of a return pressure regulator 34 between the flow 20 and return 22 in the stub 26 whose input side 36 of the return pressure regulator 34 is at a time constant, adjustable pressure can be maintained. If, for example, the flow 20 in the region of the connection of the spur line 24 has a pressure of 20 bar within the paint line 8 and the return 22 is kept substantially unpressurized, it would be conceivable to regulate the return pressure regulator 34 to 12 bar, which then means that between the input side 36 of the return pressure regulator 34 and the flow 20 a pressure difference of 8 bar drops.
  • a pressure measuring device 38 is provided in the form of a manometer. In this way, a change in the form at this point can be easily realized and readjusted by the pressure control device 32 in the form of the return pressure regulator 34 accordingly. This also proves to be advantageous, for example, if additional sampling points are added or some sampling points are blocked, or if the supply pressure is changed for some reason.
  • a respective pressure control device 32 can also take into account the specific requirements of the sampling point, it is usually at manual tapping points 4, a lower pressure difference than at machine tapping points, which cooperate with automatic lacquering inside the spray booth 2 set.
  • the device 18 for producing a pressure difference between flow 20 and return 22 of the color line 8 is provided in a branching off from the color line 8 and again leading back to this line section 40.
  • a piggable 3/2 way branching device 42 in the form of a ball valve 44 is provided for this purpose.
  • the branching device 42 is set so that the entire circulation is passed through the line section 40 and thus through the device 18 for producing the pressure difference. If a color change is carried out at regular intervals in the series painting operation and the line is cleaned for this purpose, the branching device 42 is switched such that now the entire flow communication takes place via the relatively short line section 46 between the branching devices 42 and the line section 40 is therefore no longer traversed.

Landscapes

  • Coating Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Glass Compositions (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Finger-Pressure Massage (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Claims (8)

  1. Dispositif pour le laquage d'objets, comprenant une conduite à peinture (8) présentant une pompe à circulation (16) et guidée en forme d'anneau, qui relie un récipient de réserve de peinture ou de circulation (10) à un lieu de travail (2) et présente un retour (22) revenant du lieu de travail (2) au récipient de réserve ou de circulation de peinture (10), un dispositif (18) pour l'établissement d'une différence de pression étant prévu entre l'aller et retour et plusieurs points de prélèvement (4, 6) au moyen de conduites de dérivation (24, 26) étant prévus sur le lieu de travail (2) entre l'aller (20) et le retour (22), de sorte que les conduites de dérivation (24, 26) peuvent être parcourues par la peinture de préférence avec le moins d'espace mort possible même pendant des pauses de service assez longues, caractérisé en ce que la conduite à peinture (8) présente une section de conduite constante au moins dans la partie de conduite où les plusieurs points de prélèvement (4, 6) sont prévus, et est ainsi raclable, et en ce que les points de prélèvement (4, 6) présentent chacun un dispositif de réglage de pression (32) sous la forme d'un régulateur de retour (34), qui est disposé par rapport aux points de prélèvement (4, 6) côté écoulement ou côté retour dans la conduite de dérivation (26), avec laquelle la différence de pression baissant sur le point de dérivation (4, 6) peut être réglée individuellement, de sorte qu'une vitesse d'écoulement souhaitée peut être réalisée par les conduites de dérivation (24, 26).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif (18) pour l'établissement d'une différence de pression entre l'aller (20) et le retour (22) est prévu dans une section de conduite (40) partant de la conduite à peinture (8) et en revenant à celle-ci.
  3. Dispositif selon la revendication 2, caractérisé en ce que la section de conduite (40) est ajoutée à la conduite pour peinture (8) au moyen d'un dispositif de dérivation à 3/2 distributeurs (42) raclable.
  4. Dispositif selon la revendication 3, caractérisé en ce que le dispositif de dérivation à 3/2 distributeurs raclable est formé d'un robinet à boisseau sphérique (44).
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, dans le cas d'un point de prélèvement manuel (4), une différence de pression de 4 à 8 bars, en particulier de 5 à 7 bars, peut être réglée au moyen du dispositif de réglage de pression (32).
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, dans le cas d'un point de prélèvement (6) mécanique, une différence de pression de 6 à 10 bars, en particulier 8 à 10 bars, peut être réglée au moyen du dispositif de réglage de pression (32).
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, par rapport au point de prélèvement, il est prévu côté aller un dispositif de mesure de pression (38) dans la conduite de dérivation (24) correspondante.
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, dans la conduite à peinture (8), côté aller et côté retour ... du lieu de travail et des points de prélèvement, il est prévu un dispositif de sas (48, 50) pour l'entrée et la sortie d'un corps de refoulement réalisé en fonction du diamètre intérieur de la conduite pour le nettoyage de la conduite à peinture (8).
EP03011070A 2002-06-07 2003-05-20 Installation de peinture Expired - Lifetime EP1369182B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200330327T SI1369182T1 (sl) 2002-06-07 2003-05-20 Priprava za barvanje

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10226263 2002-06-07
DE10226263A DE10226263A1 (de) 2002-06-07 2002-06-07 Lackiereinrichtung

Publications (3)

Publication Number Publication Date
EP1369182A2 EP1369182A2 (fr) 2003-12-10
EP1369182A3 EP1369182A3 (fr) 2005-03-30
EP1369182B1 true EP1369182B1 (fr) 2006-06-21

Family

ID=29432722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03011070A Expired - Lifetime EP1369182B1 (fr) 2002-06-07 2003-05-20 Installation de peinture

Country Status (5)

Country Link
EP (1) EP1369182B1 (fr)
AT (1) ATE330709T1 (fr)
DE (2) DE10226263A1 (fr)
ES (1) ES2266681T3 (fr)
SI (1) SI1369182T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT2018230E (pt) 2006-05-12 2015-12-22 Duerr Systems Gmbh Instalação de revestimento e processo de operação associado
CN105080755B (zh) * 2015-07-14 2018-05-22 北京汽车股份有限公司 一种汽车涂装线供漆装置
DE102018109344A1 (de) * 2018-04-19 2019-10-24 Dürr Systems Ag Versorgungssystem zur Versorgung mehrerer Abnehmer mit einem Applikationsmittel
CN113753271B (zh) * 2021-10-22 2023-02-24 中国科学院长春光学精密机械与物理研究所 一种空间太阳望远镜前置滤光镜支撑装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023968A (en) * 1958-09-22 1962-03-06 Gen Motors Corp Recirculating paint spray system
JPH0290962A (ja) * 1988-09-27 1990-03-30 Taikisha Ltd 塗装ブースにおける塗料供給装置
AU2654195A (en) * 1994-06-07 1996-01-04 Nordson Corporation Spray pressure control and method of operating for can coating system
DE10117917A1 (de) * 2001-04-10 2002-10-17 Volkswagen Ag Lackieranlage

Also Published As

Publication number Publication date
SI1369182T1 (sl) 2006-10-31
EP1369182A2 (fr) 2003-12-10
ES2266681T3 (es) 2007-03-01
EP1369182A3 (fr) 2005-03-30
DE10226263A1 (de) 2003-12-24
ATE330709T1 (de) 2006-07-15
DE50303906D1 (de) 2006-08-03

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