EP0338871A1 - Gesteuerte Farbspritzanlage mit häufigem Farbwechseln, insbesondere für die Automobilindustrie - Google Patents

Gesteuerte Farbspritzanlage mit häufigem Farbwechseln, insbesondere für die Automobilindustrie Download PDF

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Publication number
EP0338871A1
EP0338871A1 EP89400534A EP89400534A EP0338871A1 EP 0338871 A1 EP0338871 A1 EP 0338871A1 EP 89400534 A EP89400534 A EP 89400534A EP 89400534 A EP89400534 A EP 89400534A EP 0338871 A1 EP0338871 A1 EP 0338871A1
Authority
EP
European Patent Office
Prior art keywords
coating product
product
controlled
coating
pump
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.)
Ceased
Application number
EP89400534A
Other languages
English (en)
French (fr)
Inventor
Robert Roy
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Sames SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
Sames SA
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 Automobiles Peugeot SA, Automobiles Citroen SA, Sames SA filed Critical Automobiles Peugeot SA
Publication of EP0338871A1 publication Critical patent/EP0338871A1/de
Ceased 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
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/149—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet characterised by colour change manifolds or valves therefor

Definitions

  • the invention relates to a controlled installation for spraying coating product comprising at least one projector supplied, through a distribution circuit comprising means for propelling coating product, from a coating product change device. connected to a multiplicity of supply loops, each traversed by a particular coating product, by as many controlled valves, the apparatus also being selectively supplied with rinsing product and with air for drying under pressure.
  • the invention is more particularly applicable to the use of lacquers or metallic or solid bases of multiple colors, with rapid and frequent color changes of the coating product, in particular for the coating of automobile bodies.
  • Known paint spraying installations provided with a programmed automatic piloting color change system, comprising a plurality of circuits for circulating paints of different colors which will hereinafter be called “supply loops", in each of which a paint circulates continuously over a relatively large path, means for supplying rinse aid, also in the form of a continuous circulation circuit, means for supplying compressed air and a set of controlled valves and systems of control forming what is generally called a "color change block" comprising at least one output connected to one or more projectors located in a paint spray booth. Objects to paint pass through this cabin.
  • the supply loops are in fact long conduits each defining a closed circuit.
  • Each loop, in which paint is constantly circulating, is in communication with a paint tank of a given color, located remotely in the factory.
  • Controlled valves allow the admission into the collector of the color change apparatus and therefore the arrival in the sprayer of as many different products as there are supply loops.
  • Valves allow injection into the distribution circuit of rinsing solvent and blowing and drying air.
  • This station therefore generally comprises at least 9 similar circuits as just described, only the supply loops being common to all the sprayers.
  • the output of the color change block is connected to the projector via a distribution circuit successively including a motor-pump group and a conduit.
  • the motor-pump unit consists of a pump of the rinsable gear type, short-circuitable during the color change sequence, the input of which is directly connected to the output of the color change block, and a motor.
  • drive for example of the step-by-step type, the speed of rotation of which is considered to be proportional to the quantity of paint withdrawn from the supply loop and discharged towards the sprayer.
  • Pressure sensors monitor the inlet and outlet pressures of the pump.
  • the color changing block or apparatus always placed near the pump, is connected by a hose several meters in length to the supply loops, which leaves without movement and therefore without mixing the contents of the pipes which do not correspond sprayed product at the time.
  • certain products such as bases or water products, consisting of suspensions, sediment when they are no longer in motion for a period of time exceeding a few tens of minutes.
  • the invention proposes a piloted installation for spraying coating product comprising at least one powered projector, through a distribution circuit comprising means for propelling coating product, from a change of switchgear.
  • coating product connected to a multiplicity of supply loops, each traversed by a particular coating product, by as many controlled valves, the apparatus also being selectively supplied with rinsing product and air for drying under pressure, characterized in that said apparatus is divided into a plurality of coating product changing units, here called primary units, arranged in parallel in close proximity to the multiplicity of supply loops and each having an outlet, and in that '' a coating product change unit, here called secondary unit, has a plurality of inputs fitted with valves controlled, each connected through an intermediate pipe to the outlet of a respective primary unit, pipe rinsable after use from this respective primary unit.
  • the primary product change units By placing the primary product change units in the immediate vicinity of the coating product supply loops, the product stagnation between the supply loops and the controlled valves of the primary units is eliminated, stagnation can only occur in the intermediate pipes, which are in reduced number, and can be cleaned by rinsing and blowing from the primary coating product change units.
  • damage to a valve controlled by a primary unit can be repaired by isolating the primary unit from the only supply loops to which this unit is connected, while the rest of the installation continues to operate with the colors which do not correspond to the isolated primary unit.
  • the installation is controlled by a computer where a forecast of sequence for changing the coating product is stored and this computer is programmed to inhibit the rinsing of an intermediate pipe after use with a particular coating product if this pipe must be reused at the first occurrence by the same coating product, within a specified period of time.
  • the propulsion means comprise, at the output of the secondary coating product change unit, a pump driven by a variable speed motor controlled by a servo device sensitive to the difference between a signal emitted by a flow sensor in series with said pump, and a setpoint signal.
  • a controlled valve is arranged in parallel with the pump. This valve will be open during cleaning cycles.
  • a coating product projection installation according to the invention is supplied by a multiplicity of supply loops (here 30) grouped in one plurality (here 5) of blocks A, B, C, D, E of six loops referenced 1 to 6 with the lowercase letter of its block.
  • Each supply loop includes, as shown here for loop 5 d , a tank R, a circulation pump P, a supply line Q and a return line S.
  • each GK primary unit comprises two pneumatically operated valves 8 (gk) and 9 (gk), connected respectively to rinsing product 20 and air under blowing and rinsing pressure 21 lines, and an outlet 10 ( gk).
  • the five outputs 10g-10k of the recovery product change units are connected by pipes 11g-11k of length of the order of a meter to pneumatically operated valves 1 l , 2 l , 3 l , 4 l , 5 l respectively of a secondary unit L for changing the coating product, of conventional structure similar to that of the primary units GK.
  • This secondary unit L also has pneumatically controlled valves 8 l and 9 l connected respectively to the pipes 20 and 21 for supplying rinsing product and blowing and drying air, and an outlet 10 l .
  • This secondary unit L for changing the coating product is located a short distance from the product projection booths. Its output 10 l is connected to a distribution circuit 12 comprising a product propulsion group 40 as a whole, which will be described in more detail with reference to FIG. 2, which flows into a flexible pipe 41 for connection to the projector 14.
  • a covering station for automobile bodywork can have up to 9 projectors, each powered independently by an installation as just described.
  • the selection of the various coating products includes, analogously to the conventional process of change of product, the opening of the valve controlled in group 1a-6a, 1b-6b, 1c-6c, 1d-6d, 1e-6e, which corresponds to the supply loop assigned to the desired coating product, and simultaneously that of the valve of group 1 l -5 l of the secondary unit L which corresponds to the suitable group in the plurality AK of supply loops.
  • the secondary product change units L and that of the primary units GK which has been used are rinsed, as well as the distribution circuit 12.
  • the computer has memorized the forecast sequence of use of the coating products for a duration greater than the duration of non-sedimentation of the products, it is within the reach of the skilled person to program this computer to identify the occurrence of the succession of use of the same product in the time interval of non-sedimentation, and controlling in response the inhibition of the purging and cleaning operation of the intermediate pipe of the plurality 11g-11k.
  • the propulsion means 40 comprise a rinsable pump 55, of the type to gear, driven by a motor 50 with rapid response time, and further connected to the output 10 l of the secondary unit L for changing the coating product.
  • the motor 50 is powered by servo electronics 51 with a comparator 52 which receives on the one hand, a flow signal delivered by a flow sensor 53, and on the other hand, on an input 54, a setpoint signal developed by an automatic management principle known in itself.
  • a controlled valve 56 which can be opened, either to discharge the pump in the event of downstream overpressure, or to bypass the rinse aid when the pump is not running.
  • a three-way valve 57 Between the pump 55 and the flow sensor 53 is disposed a three-way valve 57, which allows the rinsing product to be diverted parallel to the flow sensor, which does not have to work in the rinsing phase.
  • Pressure sensors 58, 59 respectively upstream and downstream of the propulsion means 40 provide the safety functions to protect the pump 55 and the flow sensor 53.

Landscapes

  • Spray Control Apparatus (AREA)
EP89400534A 1988-03-16 1989-02-24 Gesteuerte Farbspritzanlage mit häufigem Farbwechseln, insbesondere für die Automobilindustrie Ceased EP0338871A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8803408A FR2628657B1 (fr) 1988-03-16 1988-03-16 Installation pilotee de projection de peinture ou analogue, avec changement de couleur frequent, notamment pour l'industrie automobile
FR8803408 1988-03-16

Publications (1)

Publication Number Publication Date
EP0338871A1 true EP0338871A1 (de) 1989-10-25

Family

ID=9364324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400534A Ceased EP0338871A1 (de) 1988-03-16 1989-02-24 Gesteuerte Farbspritzanlage mit häufigem Farbwechseln, insbesondere für die Automobilindustrie

Country Status (2)

Country Link
EP (1) EP0338871A1 (de)
FR (1) FR2628657B1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927880A1 (de) * 1989-08-23 1991-01-03 Behr Industrieanlagen Verfahren und anlage zum beschichten von gegenstaenden mit haeufig wechselndem farbmaterial
EP0640403A2 (de) * 1993-08-30 1995-03-01 ABBPATENT GmbH Wechselsystem für verschiedene Medien
DE4339302A1 (de) * 1993-11-18 1995-05-24 Abb Patent Gmbh Farbwechselblock
US6291018B1 (en) 1999-11-15 2001-09-18 Ppg Industries Ohio, Inc. Method for applying a composite coating having a polychromatic effect onto a substrate
US6296706B1 (en) 1999-11-15 2001-10-02 Ppg Industries Ohio, Inc. Method and apparatus for dynamically coating a substrate
WO2001094025A1 (fr) * 2000-06-08 2001-12-13 Eisenmann France Sarl Procede de realisation et d'application par pulverisation d'une peinture multi-composants
US6641666B2 (en) 1999-11-15 2003-11-04 Ppg Industries Ohio, Inc. Method and apparatus for coating a substrate
DE10335358A1 (de) * 2003-08-01 2005-03-10 Duerr Systems Gmbh Beschichtungsmittelwechsler
WO2008071273A3 (de) * 2006-12-12 2008-10-16 Duerr Systems Gmbh Beschichtungseinrichtung mit einer dosiervorrichtung
US7445816B2 (en) 1999-11-15 2008-11-04 Ppg Industries Ohio, Inc. Method and apparatus for coating a substrate
CN101588875B (zh) * 2006-12-12 2014-08-06 杜尔系统有限责任公司 包括计量装置的涂漆设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674205A (en) * 1971-05-14 1972-07-04 Champion Spark Plug Co Multiple color paint spray system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5665656A (en) * 1979-11-02 1981-06-03 Mitsubishi Motors Corp Arranged pipe system of color changing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674205A (en) * 1971-05-14 1972-07-04 Champion Spark Plug Co Multiple color paint spray system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 132 (C-68)[804], 22 août 1981, page 7 C 68; & JP-A-56 65 656 (MITSUBISHI JIDOSHA KOGYO K.K.) 03-06-1981 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927880A1 (de) * 1989-08-23 1991-01-03 Behr Industrieanlagen Verfahren und anlage zum beschichten von gegenstaenden mit haeufig wechselndem farbmaterial
DE3927880C2 (de) * 1989-08-23 1998-07-30 Behr Industrieanlagen Verfahren und Anlage zum Beschichten von Gegenständen mit häufig wechselndem Farbmaterial
EP0640403A2 (de) * 1993-08-30 1995-03-01 ABBPATENT GmbH Wechselsystem für verschiedene Medien
DE4329101A1 (de) * 1993-08-30 1995-03-02 Abb Patent Gmbh Wechselsystem für verschiedene Medien
EP0640403A3 (de) * 1993-08-30 1995-09-27 Abb Patent Gmbh Wechselsystem für verschiedene Medien.
DE4339302A1 (de) * 1993-11-18 1995-05-24 Abb Patent Gmbh Farbwechselblock
DE4339302C2 (de) * 1993-11-18 1999-12-30 Abb Patent Gmbh Farbwechselblock mit Leckageindikatoren
US6296706B1 (en) 1999-11-15 2001-10-02 Ppg Industries Ohio, Inc. Method and apparatus for dynamically coating a substrate
US6291018B1 (en) 1999-11-15 2001-09-18 Ppg Industries Ohio, Inc. Method for applying a composite coating having a polychromatic effect onto a substrate
US6641666B2 (en) 1999-11-15 2003-11-04 Ppg Industries Ohio, Inc. Method and apparatus for coating a substrate
US7445816B2 (en) 1999-11-15 2008-11-04 Ppg Industries Ohio, Inc. Method and apparatus for coating a substrate
WO2001094025A1 (fr) * 2000-06-08 2001-12-13 Eisenmann France Sarl Procede de realisation et d'application par pulverisation d'une peinture multi-composants
FR2809970A1 (fr) * 2000-06-08 2001-12-14 Eisenmann France Sarl Procede de realisation et d'application par pulverisation d'une peinture multi-composants
DE10335358A1 (de) * 2003-08-01 2005-03-10 Duerr Systems Gmbh Beschichtungsmittelwechsler
WO2008071273A3 (de) * 2006-12-12 2008-10-16 Duerr Systems Gmbh Beschichtungseinrichtung mit einer dosiervorrichtung
JP2010512241A (ja) * 2006-12-12 2010-04-22 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 計量デバイスを備える塗装装置
US8333164B2 (en) 2006-12-12 2012-12-18 Duerr Systems, Gmbh Coating apparatus comprising a metering device
CN101588875B (zh) * 2006-12-12 2014-08-06 杜尔系统有限责任公司 包括计量装置的涂漆设备

Also Published As

Publication number Publication date
FR2628657B1 (fr) 1990-07-13
FR2628657A1 (fr) 1989-09-22

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