EP0716889B1 - Verfahren und Vorrichtung zum Spritzen von Beschichtungsprodukten - Google Patents

Verfahren und Vorrichtung zum Spritzen von Beschichtungsprodukten Download PDF

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Publication number
EP0716889B1
EP0716889B1 EP95420322A EP95420322A EP0716889B1 EP 0716889 B1 EP0716889 B1 EP 0716889B1 EP 95420322 A EP95420322 A EP 95420322A EP 95420322 A EP95420322 A EP 95420322A EP 0716889 B1 EP0716889 B1 EP 0716889B1
Authority
EP
European Patent Office
Prior art keywords
objects
piston
coating product
spray nozzle
reservoir
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
EP95420322A
Other languages
English (en)
French (fr)
Other versions
EP0716889A2 (de
EP0716889A3 (de
Inventor
Caryl Thome
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.)
Sames SA
Original Assignee
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 Sames SA filed Critical Sames SA
Publication of EP0716889A2 publication Critical patent/EP0716889A2/de
Publication of EP0716889A3 publication Critical patent/EP0716889A3/de
Application granted granted Critical
Publication of EP0716889B1 publication Critical patent/EP0716889B1/de
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
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B05B12/124—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to distance between spray apparatus and target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
    • 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
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1675—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive the supply means comprising a piston, e.g. a piston pump
    • 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
    • B05B9/047—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 supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container

Definitions

  • the invention relates to a method and a device. coating product projection used, especially in installations where the power supply of a coating product projector is produced from a piston tank.
  • the flow rate of coating product is controlled relative to the speed of the conveyor which transports objects to be coated such as bodywork motor vehicles.
  • a calculator determines, at given time intervals, on the order of a few seconds, and depending on the speed of the conveyor, a paint flow setpoint which must be delivered to a projector during the interval of next time.
  • a supply of projector from a piston tank we thus controls the speed of displacement of the piston relative to the speed of movement of the objects.
  • the precision of the conveying speed of bodywork is also important for the state of surface obtained that the product flow accuracy of coating provided to the projector.
  • the invention solves all of these problems.
  • It relates to a product projection process coating thanks to at least one powered projector coating product from a tank piston characterized in that the position of the piston in the tank is slaved to the relative position of the projector in relation to the objects to be coated.
  • the invention also relates to a device suitable for implementation of this process and more specifically a coating product spraying device objects transported by a conveyor, said device comprising a projector powered by coating product from a tank to piston, characterized in that it comprises means to control the position of the piston in the tank relative to the relative position of the projector by relation to objects.
  • the invention applies equally well to the case where the objects to be coated parade in front of the projector, possibly mobile, or where the objects are fixed during the coating phases and where the projector is mobile, for example carried by the arm of a multi - axis robot.
  • the projector can be carried by a side machine or a roof machine.
  • Figure 1 The installation of Figure 1 includes a conveyor not shown moving objects, such as motor vehicle bodies 1 in translation in a cabin 2 along an axis XX '. She understands essentially several lateral machines 3a to 3f and a roof machine 4. Each of these machines carries at least one projector 5a to 5i respectively supplied with coating product from a piston tank 6a to 6i.
  • the tank 6a of the machine 3a comprises a piston 7a, controlled by a 8a electric step motor, and able to push the coating product outside the tank 6a to projector 5a.
  • the motor 8a is controlled by a digital control 9a connected to a non-automatic represented.
  • the position of the piston 7a in the tank 6a is determined by its abscissa on an axis along which it moves in translation.
  • the position of the bodywork along axis XX ' is measured by a sensor 10 placed on the path of the bodies 1 and whose output is connected to the PLC.
  • the position of the piston 7a in the tank is determined by digital control 9a depending on the position of the bodywork along the axis XX '. More specifically, a top is sent by the sensor 10 to the automaton for each centimeter traveled by the body. With an average speed of 4 meters per minute, a top is sent every 150 milliseconds.
  • the PLC interpolates the average setpoint value of the position of the piston 7a which is transmitted to the digital control 9a and motor 8a.
  • the operation of other machines is similar.
  • the function whose variable is the position of the bodywork along axis XX 'and for value the abscissa of the piston position is a function growing monotonous.
  • the piston is disengaged and held in position until the body returns to the position it occupied before changing direction.
  • the connection between the piston and its drive rod is of the type disclosed in application FR-A-2 722 432 on behalf of the Applicant whose content is included in the presents request by reference.
  • Curve A is used to a linear relationship between the conveyor tops and advance of the piston.
  • the constant scale coefficient is around 0.0375 since the piston travels approx. 150 mm while the body travels about 4 meters.
  • Curve B results from a coefficient of variable scale which is determined experimentally depending on the thickness of the coating product desired and the size of the surfaces to be painted perpendicular to their displacement on the conveyor. So the position of the piston in the tank in the middle of the body changes quickly because the entire height of the vehicle is to be painted while at the start and at the end of the coating phase the vehicle is painted to the top of the wings; that is to say at mid-height.
  • the installation in Figure 3 differs from that in the Figure 1 in that the conveyor is of the stop type (stop and go) and in that the projector 105a is susceptible to movements parallel to the XX 'axis, here mounted on a multi-axis robot 112a.
  • the elements similar to those of figure 1 carry identical references increased by 100.
  • the bodywork 101 being fixed in the cabin 102 during the phases coating product projection, position relative of the projector to the body is known by measuring the position of the projector 105a in cabin 102, i.e. the position of the end of the robot 112a arm.
  • the sensor 10 of the embodiment of Figure 1 can advantageously be replaced by a 110a encoder or set of encoders placed near the joints of the multi-axis robot 112.
  • the enslavement of the position of piston 107a in tank 106a is possible thanks to a numerical control 109a which drives a 108a electric stepper motor.

Landscapes

  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (12)

  1. Verfahren zum Sprühen von Beschichtungsmaterial mittels mindestens eines Projektors (5, 105a) der aus einem Kolbenbehälter (6, 106) mit dem Beschichtungsmaterial versorgt wird,
    dadurch gekennzeichnet,
    daß die Position des Kolbens (7, 107) in dem Behälter abhängig von der relativen Position des Projektors in Bezug auf die zu beschichtenden Gegenstände (1, 101) geregelt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gegenstände (1, 101) translatorisch längs einer Achse (XX') durch einen Förderer verschoben werden.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Gegenstände (1) von dem Förderer während der Phasen des Aufsprühens des Beschichtungsmaterials translatorisch verschoben werden und daß die Regelung der Position des Kolbens in Bezug auf die Position eines Punktes der Gegenstände (1) auf der Achse (XX') der translatorischen Verschiebung der Gegenstände durchgeführt wird.
  4. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Gegenstände (1) von dem Förderer während der Phasen des Aufsprühens des Beschichtungsmaterials translatorisch verschoben werden und daß die Position des Kolbens (7) in dem Behälter (6) im Falle der Änderung der Verschiebungsrichtung eines Gegenstandes während der Beschichtung beibehalten wird.
  5. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Gegenstände während der Beschichtungsphasen in einer Kabine (102) feststehen und daß der Projektor (105a) relativ zu den Gegenständen und parallel zu der Verschiebungsachse (XX') der Gegenstände bewegbar ist.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Regelung der Position des Kolbens (107a) in Bezug auf die Position des Projektors (105a) in der Kabine durchgeführt wird.
  7. Vorrichtung zum Aufsprühen von Beschichtungsmaterial auf von einem Förderer transportierten Gegenständen (1, 101), wobei die Vorrichtung einen aus einem Kolbenbehälter (6, 106a) mit Beschichtungsmaterial versorgten Projektor umfaßt, dadurch gekennzeichnet, daß sie Mittel zum Regeln (8, 9, 108a, 109a) der Position des Kolbens (7, 107) in dem Behälter in Bezug auf die Position des Projektors bezüglich der Gegenstände aufweist.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Mittel mindestens einen Meßaufnehmer (10) der Position der Gegenstände (1), der dazu geeignet ist, die Abszisse eines Punktes der Gegenstände auf einer Achse (XX') zu bestimmen, oder einen Meßaufnehmer (110a) der Position des Projektors (105a) parallel zur Achse (XX') umfassen.
  9. Vorrichtung nach Anspruch 7 oder Anspruch 8, dadurch gekennzeichnet, daß sie einen Förderer umfaßt, der dazu geeignet ist, die Gegenstände (1) translatorisch während der Phasen des Aufsprühens des Beschichtungsmaterials zu verschieben und daß sie Mittel (8, 9) aufweist, die die Position des Kolbens (7) in dem Behälter (6) im Falle der Richtungsänderung der Verschiebung eines Gegenstandes während der Beschichtung beibehält.
  10. Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß die Antriebsmittel des Kolbens (7, 107a) einen elektrischen Schrittmotor (8, 108a) umfassen.
  11. Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die Mittel mindestens eine numerische Steuerung (9, 109a) umfassen, die die Antriebsmittel des Kolbens (7, 107a) mit einem variablen Skalenkoeffizienten zwischen der relativen Position des Projektors (5, 105a) in Bezug auf die Gegenstände (1, 101) einerseits und der Position des Kolbens in dem Behälter andererseits steuert.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der Koeffizient eine Funktion der Dicke der gewünschten Beschichtung ist.
EP95420322A 1994-11-18 1995-11-17 Verfahren und Vorrichtung zum Spritzen von Beschichtungsprodukten Expired - Lifetime EP0716889B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9414047A FR2727039B3 (fr) 1994-11-18 1994-11-18 Procede et dispositif de projection de produit de revetement
FR9414047 1994-11-18

Publications (3)

Publication Number Publication Date
EP0716889A2 EP0716889A2 (de) 1996-06-19
EP0716889A3 EP0716889A3 (de) 1997-04-23
EP0716889B1 true EP0716889B1 (de) 1999-09-15

Family

ID=9469079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95420322A Expired - Lifetime EP0716889B1 (de) 1994-11-18 1995-11-17 Verfahren und Vorrichtung zum Spritzen von Beschichtungsprodukten

Country Status (5)

Country Link
US (1) US5744190A (de)
EP (1) EP0716889B1 (de)
JP (1) JP3361671B2 (de)
DE (1) DE69512187T2 (de)
FR (1) FR2727039B3 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6344109B1 (en) 1998-12-18 2002-02-05 Bki Holding Corporation Softened comminution pulp
US6378220B1 (en) * 2000-04-11 2002-04-30 Daimlerchrysler Corporation Measuring tool usable with a paint applicator
US6676049B2 (en) 2001-11-16 2004-01-13 Efc Systems, Inc. Bell cup powder spray applicator
DE60311519T2 (de) * 2002-10-23 2007-11-29 Fanuc Robotics America, Inc., Rochester Hills Modulare beschichtungsvorrichtung
JP4841342B2 (ja) * 2006-07-14 2011-12-21 トリニティ工業株式会社 塗料漏れ検知装置、塗料充填システム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431690A (en) * 1982-04-23 1984-02-14 Nordson Corporation Controller for uniform fluid dispensing
GB2142257B (en) * 1983-07-02 1986-11-26 Gen Motors Overseas Adhesive application apparatus
FR2561947A1 (fr) * 1984-03-27 1985-10-04 Borten Alexandre Installation pour l'application d'un liquide de revetement sur une surface par telecommande electro
FR2609252B1 (fr) * 1987-01-02 1989-04-21 Sames Sa Installation de projection de produit de revetement tel que par exemple une peinture et notamment installation de projection electrostatique de peinture a base d'eau
FR2677611A1 (fr) * 1991-06-11 1992-12-18 Sames Sa Reservoir a capacite ajustable, pour produit liquide.
DE4209279C3 (de) * 1992-03-21 2000-09-14 Cegelec Aeg Anlagen Und Automa Verfahren und Vorrichtung zum automatischen Beschichten von Gegenständen
FR2695327B1 (fr) * 1992-09-09 1995-07-07 Sames Sa Dispositif de projection électrostatique de produit de revêtement électriquement conducteur, muni d'un réservoir isolé adapté à contenir un tel produit.

Also Published As

Publication number Publication date
DE69512187T2 (de) 2000-05-18
US5744190A (en) 1998-04-28
FR2727039A1 (fr) 1996-05-24
JP3361671B2 (ja) 2003-01-07
DE69512187D1 (de) 1999-10-21
FR2727039B3 (fr) 1996-12-13
EP0716889A2 (de) 1996-06-19
JPH08206554A (ja) 1996-08-13
EP0716889A3 (de) 1997-04-23

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