EP0088668A1 - Automatische Vorrichtung zum Spritzen der Innenseite von Kraftfahrzeugkarosserien - Google Patents

Automatische Vorrichtung zum Spritzen der Innenseite von Kraftfahrzeugkarosserien Download PDF

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Publication number
EP0088668A1
EP0088668A1 EP83400384A EP83400384A EP0088668A1 EP 0088668 A1 EP0088668 A1 EP 0088668A1 EP 83400384 A EP83400384 A EP 83400384A EP 83400384 A EP83400384 A EP 83400384A EP 0088668 A1 EP0088668 A1 EP 0088668A1
Authority
EP
European Patent Office
Prior art keywords
axis
movement
bodies
painting
bodywork
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
EP83400384A
Other languages
English (en)
French (fr)
Inventor
Jean Jung
Yvon Jacob
Pierre Gourdou
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0088668A1 publication Critical patent/EP0088668A1/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
    • 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
    • B05B13/06—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 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • 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
    • B05B13/0405—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 with reciprocating or oscillating spray heads
    • 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
    • B05B5/12—Plant for applying liquids or other fluent materials to objects specially adapted for coating the interior of hollow bodies
    • 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

Definitions

  • the invention relates to painting the interior surface of motor vehicle bodies or of any similar enclosure such as a cabin; container or wagon.
  • the object of the invention is to avoid the above drawbacks by painting the interiors in a simple, efficient and economical manner.
  • the invention consists in using at least one electrostatic spray head with ccentrifugal atomization which is moved with a simple movement inside the bodywork or the enclosure joined to ground. This results in a confinement phenomenon where an electric field inside the bodywork according to a Faraday cage phenomenon operating in opposite directions to each other so that the paint particles cannot not escape from the body, and that the escape through the wide openingsn far from being lost by electrostatic effects on the sheets
  • the installation uses a mechanism with three degrees of freedom carrying. two electrostatic sprayers and making it possible to modify their spacing, their distance to the vehicle axis respectively, and their overall orientation around this axis with work handling moving the vehicle in the direction of its axis of movement- back and forth.
  • these bodies run in a uniform movement on a chain while a single electrostatic rotating bowl is placed inside. and at the front of the vehicle in a fixed position, providing only a mechanism with two degrees of freedom to ensure the lateral retraction of the sprayer and of the arm which carries it, then on reversing to place it in the following interval and its advancement through the rear opening of the vehicle to the front position.
  • the method according to the invention consisting in moving with a simple movement relative to the body to be painted at least one electrostatic bowl rotating at high speed, several solutions are possible to ensure this relative movement.
  • FIGS. 2 and 3 the essential mechanism is shown in detail in FIGS. 2 and 3
  • this mechanism includes a fixed support 2 firmly anchored in the ground 3 and itself supporting a cradle 4 movable in rotation relative to a horizontal axis 5 which is the main axis of the installation.
  • This cradle 4 essentially consists of a cage 5 terminated at the rear end by a shaft 6 rotating in a bearing 7 secured to the support 2, and at the front by a crown 8 resting on rollers 9 which rotate themselves around fixed axes carried by the support 2.
  • the entire cradle 4 can be driven in a slow rotational movement over at least 3/4 of a turn using a servo-motor 10, preferably hydraulic , with an angular tracking device 11 constituted by a plate or a drum integral with the end of the shaft 6 and moving in front of one or more sensors making it possible to determine at any time the angular position of the cradle 4.
  • a cantilever beam 12 preferably a box beam with an evolving profile, the embedding end of which is articulated around an axis 13, perpendicular to the axis 5 and swiveling in the cradle 4 in the immediate vicinity of the crown 8.
  • the beam 12 is thus capable of placing its own axis coinciding with the preceding horizontal 5, or of deviating angularly from this axis.
  • the corresponding movement is caused by another servo-motor 14, also preferably hydraulic, which is articulated er 15 on the cage in which on a articulation 16 carried by the end of the beam 12 located inside the cage 4.
  • This servo-motor 14 is naturally capable of angularly displacing the beam 12 to move it away from the axis 5 or bring it back in this axis , for all the angular positions of the cradle 4, this beam can in particular be to the right or to the left or above or even below this axis for four preferred orientations of the cradle 4
  • a perpendicular cross member 18 At the free end 17 of the beam 12 is fixed a perpendicular cross member 18 whose general direction is parallel to the hinge axis 13. Each end of this cross member 18 comprises a hinge 19 on which an arm 20 is articulated, the two articulation axes 19 carried by the crosspiece 18 being also parallel so that the two arms 20 are constantly in the same plane.
  • Each of the arms 20 carries at its free end a high-speed rotary electrostatic sprayer 21 of known type which is mounted at 22 on the arm 20 in an angularly adjustable manner in both directions.
  • each riser sprayer 21 has its usual means for adjusting the jet as well as naturally supplying paint, energy and electrostatic potential.
  • each arm 20-with the cross-member 18 is obtained separately by means of a cylinder or a particular servo-motor 23 located in the cage 5 and acting at a distance by means of a rod or rod 24, preferably passing inside the beam 12 and articulated at 25 on the rod of the corresponding servo-motor 23 and at 26 at the end of a lever arm 27 substantially perpendicular to the corresponding arm 20.
  • This remote action in particular makes it possible to lighten the free end of the beam to reduce the tilting torque of the support 2 and to avoid any hydraulic actuator (susceptible to oil leaks) in the enclosure to be painted.
  • a drum 32 on which is wound all of the flexible cables and pipes for supplying the various active members carried by the cradle 4 during the rotation of it.
  • the two sprayers 21 can be moved so as to vary their spacing, in a symmetrical or asymmetrical manner relative to the beam 12 by separate action on the jacks 23, as well as their distance to axis 5 by causing the angulation of the beam 12 to act relative to this axis 5 by means of the servo-motor 14, and finally so as to vary the orientation of the entire assembly of the cradle by rotation around this axis 5 to orient the jets successively in the direction of the four main walls of the vehicle.
  • each vehicle body 33 is arranged on a handling support frame 34 which accompanies it over a large part of the manufacturing process, and this frame 34 can be moved to a working handling 35 consisting of a slow speed conveyor and adjustable with incremental chassis position information device allowing to know at any time the position of the vehicle and to reposition the sprayers or change the painting parameters in progress based on this information. It is indeed necessary as will be seen later that this chassis performs two forward movements and two successive return movements to paint the four interior walls of the bodywork.
  • the installation also comprises conventional serving conveyors intended to bring the bodies to paint and to evacuate the painted bodies, these conveyors having to be be adapted to the fact that the supply and the evacuation must be on the same side, since the bodywork cannot cross the obstacle constituted by the support 2.
  • a transverse supply conveyor can be provided, shown diagrammatically the arrow 36 in fig. 1 and an in-line evacuation conveyor 37, with a common section of return 38, but it is also naturally possible to provide an in-line supply and a transverse evacuation.
  • the entire installation shown in FIG. 1 includes a paint booth 39, which therefore has only one opening on the side of the conveyor 38 and which is adjacent to a control room 40, which comprises a programmable controller 41, a console 42 for computerized recording of the various parameters paint and positioning to introduce the various types of bodywork that must be treated on the installation, and for each type the various sprayer position parameters and paint parameters such as flow rate and spray width.
  • a video screen 43 makes it possible to read in automatic mode the operating diagram of the machine and in recording or reading mode to view the tables, that is to say the succession of clear orders over time or as a function of the position of the vehicles on work handling 35 for each of the pre-registered types.
  • a console 44 makes it possible to clearly select in the form of a decision tree, taking into account the very large number of possible variants, the type of bodywork and the desired color to automatically cause all movement and adjustment of the paint parameters necessary for the execution of the paint, including purging and cleaning of the sprayers in case of color change.
  • the references 45 and 46 respectively designate the pneumatic cabinet and the hydraulic group for supplying the installation.
  • This automatic assembly therefore produces the displacement of the chassis 34 and of the vehicle 33 carried by the latter, the rear opening of which naturally occurs first for the engagement of the beam 12, and ensures, in a first recoil pass, the painting of the right interior face, for example, by constantly modifying if necessary during displacement the spacing of the sprayers 21, as well as their distance to the axis 5 by angulation of the beam and so as for example to bypass the passage of the wheels.
  • the device After the front interior wall of the vehicle has come to the vicinity of the sprayers 21, the device automatically reverses the direction of movement to move the vehicle forward at the same time as the cradle 4 rotates a quarter of a turn to orient the sprayers towards the roof, all the other settings being revised accordingly and permanently modified if necessary during the second advance stroke of the vehicle.
  • a single rotating bowl projecting forward, placed along the axis of the vehicle and moving in a relative movement along this axis may be sufficient for painting all interior surfaces.
  • the bodies 51 are painted on parade while being handled by a conveyor on the ground or overhead, not shown, at a constant running speed.
  • a conveyor on the ground or overhead, not shown, at a constant running speed.
  • the paint bowl 52 projects the paint forward with a large angle of diffusion and it is arranged horizontally along the axis of the vehicle by being carried by a beam angled 53 which successively comprises: - A lower part 54, parallel to the axis of the chain and located on the side thereof as shown in FIG.
  • a part 55 which is approximately vertical in the position of use;
  • a part 56 substantially horizontal and transverse to the chain in the position of use to pass over the hood of the vehicle according to the interval;
  • This part 56 follows a straight rectilinear part 57 constituting the essential part of the beam, at the front end of which a doubly bent part 58 supports the bowl 52.
  • the base portion 54 is capable of a double movement, namely a sliding in the direction of its axis by an amount substantially equal to the interval between two vehicles, and on the other hand a rotational movement around of this axis to move the assembly from the indicated position, where the bowl 52 is in the axis of the vehicle, to a lateral position shown in dashed lines on the right side of FIG. 6 and where no part of the beam 53 or of the bowl 52 constitutes an obstacle for the passage of the bodies 51.
  • the tilting movement around 54 could be replaced by a horizontal translational movement perpendicular to the chain.
  • a detector 59 detects the arrival of the vehicle, its information triggers the tilting movement which causes the sprayer to engage between the two successive vehicles, this sprayer therefore passing from position 52a to position 52, in the axis of the vehicle.
  • the end of travel of this movement triggers a longitudinal translational movement in the direction of arrow 60 of part 54 which moves the bowl from position 52 to position 52c, position in which the sprayer is still in the axis of the vehicle but inside it and at the desired distance near the front wall.
  • This stroke 60 is limited by a translation stop not shown which is adjusted so that, even if the chain stops at the start of the first movement, the sprayer does not collide with the dashboard of the vehicle to the end of the second movement.
  • a detector 61 detects the arrival of the vehicle in a position such that the desired distance between the spray bowl 52c and the front interior wall of the vehicle is reached. This detector 61 then triggers the spraying operation, which continues as a function of the incremental chain advance information. However, in the event of the chain stopping, spraying is automatically interrupted to resume on restarting.
  • the relative position of the sprayer with respect to the vehicle is known at all times thanks to an incremental chain advance detection, which makes it possible to vary the paint parameters (flow rate, diameter of the spray) in function tion of the relative position of the sprayer with respect to the vehicle.
  • a detector not shown triggers the lateral tilting movement which moves the spray bowl from position 52c to position 52d in the figures, this position and this movement being such that there is no risk of encountering the parts of the body of the vehicle, as well as its tailgate 62.
  • the end of travel of this last movement then triggers the longitudinal translation movement in the direction opposite to the arrow 60 which replaces the bowl at 52a awaiting the signal from the detector 59 to start again a new cycle for the next vehicle.

Landscapes

  • Spray Control Apparatus (AREA)
EP83400384A 1982-02-26 1983-02-25 Automatische Vorrichtung zum Spritzen der Innenseite von Kraftfahrzeugkarosserien Ceased EP0088668A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203293 1982-02-26
FR8203293A FR2522284A1 (fr) 1982-02-26 1982-02-26 Installation automatique pour peindre les interieurs de vehicules automobiles

Publications (1)

Publication Number Publication Date
EP0088668A1 true EP0088668A1 (de) 1983-09-14

Family

ID=9271413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400384A Ceased EP0088668A1 (de) 1982-02-26 1983-02-25 Automatische Vorrichtung zum Spritzen der Innenseite von Kraftfahrzeugkarosserien

Country Status (4)

Country Link
US (1) US4455965A (de)
EP (1) EP0088668A1 (de)
ES (1) ES518681A0 (de)
FR (1) FR2522284A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4613528A (en) * 1985-09-19 1986-09-23 Nordson Corporation Apparatus for applying a protective coating to inner body cavities of vehicles
US4679734A (en) * 1985-10-30 1987-07-14 Graco Inc. Robot spray gun
DE4107094A1 (de) * 1991-03-06 1992-09-10 Ransburg Gmbh Vorrichtung zum automatischen spruehbeschichten von gegenstaenden
US6418948B1 (en) * 1998-10-30 2002-07-16 Thomas G. Harmon Apparatus and method for removing concrete from interior surfaces of a concrete mixing drum
US6279589B1 (en) 1999-09-20 2001-08-28 Ag Tech International, Inc. Container cleaning and disinfecting apparatus utilizing ozone
DE10008946C1 (de) * 2000-02-25 2001-10-18 Basf Coatings Ag Verfahren zur Herstellung farb- und/oder effektgebender Mehrschichtlackierungen auf Automobilkarosserien
AR076167A1 (es) * 2009-03-30 2011-05-26 Sumitomo Metal Ind Aparato y metodo para la aplicacion de un lubricante a una porcion roscada de una tuberia de acero
IT1394346B1 (it) * 2009-05-06 2012-06-06 Maen S N C Di Campini Mauro E Campini Enrico Apparecchiatura per l'erogazione e l'applicazione di una sostanza sigillante e relativo procedimento

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477870A (en) * 1966-03-03 1969-11-11 Gen Motors Corp Method of spray coating a series of articles including the application of different colors to different articles
FR2139699A1 (de) * 1971-05-28 1973-01-12 Ransburg Sa

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1786785A (en) * 1925-08-05 1930-12-30 American Rolling Mill Co Machine for internally coating culvert pipes
US2048912A (en) * 1932-03-03 1936-07-28 Smith Corp A O Enamel spraying apparatus
US1982763A (en) * 1934-01-22 1934-12-04 United States Pipe Foundry Method of casting ingots
US2168917A (en) * 1937-04-03 1939-08-08 Albert G Perkins Apparatus for coating pipes and the like
US2893893A (en) * 1950-01-31 1959-07-07 Ransburg Electro Coating Corp Method and apparatus for electrostatic coating
FR1117341A (fr) * 1950-10-13 1956-05-22 Dispositif pour transporter un liquide sur une surface, et machine à vernir ou revêtir l'intérieur des récipients, comportant ce dispositif
US3351289A (en) * 1965-05-06 1967-11-07 Quigley Co Apparatus for applying a protective refractory coating to the refractory linings of basic oxygen furnaces
US3448717A (en) * 1965-06-03 1969-06-10 Kuhlman Machine Co Automobile wheel well undercoating apparatus and method
US3461889A (en) * 1967-05-23 1969-08-19 Whiting Corp Apparatus for washing railway boxcar interiors
US4106516A (en) * 1974-10-23 1978-08-15 Wiegand Paul C Internal wash cleaner for truck trailers and bodies
US3961983A (en) * 1974-12-23 1976-06-08 Safeway Stores, Incorporated Apparatus and method for washing interiors of truck and trailer bodies
JPS595824B2 (ja) * 1975-12-25 1984-02-07 クロサキヨウギヨウ カブシキガイシヤ 耐火材吹付用簡易ガンニング装置
US4291640A (en) * 1977-09-09 1981-09-29 The Continental Group, Inc. Powder coating apparatus for two-piece cans
DE2742415C2 (de) * 1977-09-21 1982-07-15 Martin & Pagenstecher GmbH, 5000 Köln Vorrichtung zum Herstellen der feuerfesten Zustellung metallurgischer Gefäße

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477870A (en) * 1966-03-03 1969-11-11 Gen Motors Corp Method of spray coating a series of articles including the application of different colors to different articles
FR2139699A1 (de) * 1971-05-28 1973-01-12 Ransburg Sa

Also Published As

Publication number Publication date
ES8405643A1 (es) 1984-06-16
ES518681A0 (es) 1984-06-16
FR2522284A1 (fr) 1983-09-02
US4455965A (en) 1984-06-26
FR2522284B1 (de) 1984-04-27

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Inventor name: JUNG, JEAN

Inventor name: GOURDOU, PIERRE

Inventor name: JACOB, YVON