EP1419824B1 - Dispositif de revêtement de pièces avec poudre - Google Patents

Dispositif de revêtement de pièces avec poudre Download PDF

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Publication number
EP1419824B1
EP1419824B1 EP03405774A EP03405774A EP1419824B1 EP 1419824 B1 EP1419824 B1 EP 1419824B1 EP 03405774 A EP03405774 A EP 03405774A EP 03405774 A EP03405774 A EP 03405774A EP 1419824 B1 EP1419824 B1 EP 1419824B1
Authority
EP
European Patent Office
Prior art keywords
powder
powder spraying
axis
spraying device
guide arm
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 - Fee Related
Application number
EP03405774A
Other languages
German (de)
English (en)
Other versions
EP1419824A1 (fr
Inventor
Daniel Ziwica
Wolfgang Keller
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.)
J Wagner AG
Original Assignee
J Wagner 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7976850&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1419824(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by J Wagner AG filed Critical J Wagner AG
Publication of EP1419824A1 publication Critical patent/EP1419824A1/fr
Application granted granted Critical
Publication of EP1419824B1 publication Critical patent/EP1419824B1/fr
Anticipated expiration legal-status Critical
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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
    • B05B13/02—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
    • 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
    • B05B13/06—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

Definitions

  • the invention relates to a device for coating a workpiece with powder coating.
  • This is an electrostatic powder coating in which the workpiece to be coated is coated with a layer of electrostatically charged powder.
  • the powder-coated workpiece is heated, so that the powder liquefies on the surface of the workpiece and forms a closed protective layer after cooling of the workpiece.
  • a powder coating plant is known in which, as in FIG. 1 is shown, the workpieces to be coated 4 are transported in a car 1 to be coated there with the aid of one or more powder spray guns 2.
  • the workpiece 4 is transported over a guide rail or conveyor belt 6 suspended by the car 1.
  • the cabin 1 has to the cabin roof 11 a corresponding recess.
  • the cabin 1 has an area for manual coating, which can be reached via the door 9 present on the longitudinal side 8.1 of the cabin 1.
  • a plurality of parallel juxtaposed powder spray guns 2 attached to the guide arm 3 .
  • the guide arm 3 is designed such that the powder spray guns 2 are designated both in the vertical direction, which is also referred to as y-direction below, and in the horizontal direction transversely to the transport direction of the workpiece 4, which is also referred to as the z-direction below, are movable.
  • the part of the powder which does not adhere to the workpiece 4 to be coated is sucked out of the booth 1 via a suction channel 10 and placed in an in FIG. 1 not shown container collected. This excess powder can be used again for the coating.
  • the control of the entire powder coating device takes place via a control unit 5.
  • the embodiment shown has a number of disadvantages.
  • additional personnel are required for the coating of complicated workpieces, which must coat certain parts of the workpiece by hand.
  • the coating by hand usually leads to larger manufacturing tolerances, for example, in the layer thickness, as is the case by an automatic machine coating.
  • this solution can lead to increased powder consumption because certain parts of the workpiece obtained by the coating by hand too high a powder order, or 2 more powder must be sprayed by the arrangement of the powder spray guns to provide hard to reach places of the workpiece with a sufficient layer thickness can. A significant proportion of the powder does not reach the desired locations on the workpiece and is therefore not available for the coating.
  • An object of the invention is therefore to provide a device for coating a workpiece with powder, with the help of which also workpieces can be coated with complicated geometric shape with high quality, high order efficiency and lowest possible powder consumption.
  • the object is achieved by a device for coating a workpiece with powder having the features according to claim 1.
  • the powder spray device has a nozzle, wherein the orientation of the nozzle dictates the main direction of spray.
  • the powder spray device is designed as a spray gun. This has the advantage that the interchangeability and flexibility can be increased. Depending on the application, spray guns adapted to the different operating conditions can be mounted.
  • a cabin is provided into which the powder spraying device protrudes.
  • the support member comprises a support and a guide arm, wherein the powder spray device is connected via the holder to the guide arm, and wherein the guide arm and the bracket are located outside the cab.
  • a first linear axis is provided on the guide arm, by means of which the powder spraying device can be moved in translation on a first axis.
  • the device according to the invention for coating a workpiece may have a second linear axis, which is in communication with the first linear axis, and by means of which the powder spraying device is translationally movable on a second axis.
  • This additional degree of freedom makes it possible to increase the number of possible different forms of coatable workpieces again, which further increases the usability and flexibility of the device according to the invention.
  • the guide arm can be designed to be horizontally movable via a drive.
  • the holder has a drive for the rotation of the powder spray device.
  • the powder spray device can be assembled in a compact manner.
  • the drive has a stepping motor. This can be set in a simple way, the main direction of spray.
  • the drive can be integrated in the holder.
  • a further powder spraying device can be provided in addition to the first powder spraying device.
  • it can be used to reduce the total energy consumption and the required amount of air.
  • the two powder spraying devices are connected to the guide arm via a common support and via the first and / or the second linear axis.
  • both powder spraying devices can be moved synchronously with one another in a simple manner.
  • the further powder spray device is connected via a further support with the guide arm.
  • the first powder spray device can be arranged on a first longitudinal side of the cabin and the second powder spray device on the second longitudinal side of the cabin.
  • the flexibility and the applicability of the device according to the invention is additionally increased. It can be used to coat workpieces on the front and back without having to turn the workpieces.
  • the device according to the invention is provided with a controller for the rotation and translation of the powder spray device.
  • the cab according to the invention shown embodiment of the apparatus for coating a workpiece with powder, which surrounds the conveyor belt 6 in the vicinity of the powder spray devices 22.1 and 22.2, not shown.
  • the hanging on the conveyor belt 6 workpieces 4 ' which from the workpiece 4 in FIG. 1 For example, differ in that they have one or more cavities 4.2 and 4.3, are passed to the two Pulversprühvorraumen 22.1 and 22.2 over.
  • the Pulversprühvorraumen 22.1 and 22.2 are each about a holder 60 with a guide arm 27 connected. On the brackets 60 is in connection with the explanations to the FIGS. 5A and 5B further received.
  • the guide arm 27 is movably mounted in the x-direction within a certain range, so that the guide arm 27 during the time required for the coating of the workpiece 4 ', parallel to the conveyor belt 6 and thus parallel to the workpiece 4' to move and thus can follow the workpiece 4 '. It is thereby achieved that the two spray guns 22.1 and 22.2 can move transversely to the transport direction x for the duration of the coating without the distance in the x-direction to the workpiece 4 'changing. In this way, the side 4.1 with the depth T of the workpiece 4 'from a constant distance between the spray gun 22.1 and 22.2 and side wall 4.1 are coated. The same applies to the two cavities 4.2 and 4.3 of the workpiece 4 '.
  • the two spray guns 22.1 and 22.2 can move transversely to the transport direction x, two linear axes 24.1 and 24.2 on the guide arm 27 are present.
  • the travel path of the two spray guns 22.1 and 22.2 is chosen so large that the depth T of the workpiece 4 'can be traveled with the two spray guns and the corresponding surface can be coated.
  • the two spray guns 22.1 and 22.2 are rotated about an axis of rotation A1 with the aid of the holders 60 or A1 'held rotatably.
  • the nozzles of the two spray guns 22.1 and 22.2 are arranged such that their main spray direction deviates by a defined angle ⁇ from the axis of rotation A1 or A1 ', see FIG. 3 , This can be achieved that, for example, the spray gun 22.2 is rotated until the main spray direction points to the inner upper edge 4.4 of the cavity 4.3. If the spray gun 22.2 is now moved along the z-direction with the aid of the linear axis 24.2, the edge 4.4 can be uniformly coated uniformly. Analogously, these statements also apply to the second spray gun 22.1.
  • the spray guns 22.1 and 22.2 are each mounted on an extension 25.1 and 25.2. This ensures that even elongated cavities can be coated with a small opening diameter. So that even vertical surfaces can be coated completely and uniformly, the two spray guns 22.1 and 22.2 can additionally be moved in the y direction with the aid of the two linear axes 23.1 and 23.2.
  • the angle of rotation ⁇ by which the two spray guns 22.1 and 22.2 are rotatable depends on the technical boundary conditions that have to be met.
  • the linear axes 24.1, 24.2, 25.1 and 25.2 can be designed as a rodless linear axes with toothed belt. This has the advantage that the drive is protected against powder dust.
  • the actuation of the linear axes 24.1, 24.2, 25.1 and 25.2 can be done electrically or pneumatically.
  • the required radius can be generated by rotating the spray gun and additionally displacing the spray gun in the y and x directions with the aid of the linear axes.
  • the spray gun can follow a displacement of the guide arm 27 in the x-direction, and thus parallel to the workpiece, the workpiece which is moved through the cabin.
  • a possible further example of application of the device according to the invention for powder coating consists in the coating of rims for motor vehicles.
  • the shape of the rim can be followed at a constant distance.
  • the computational effort to control the movement of the spray gun is minimal.
  • FIG. 3 shows a possible embodiment of a spray gun 22 which can be used in the device according to the invention in a side view.
  • the spray gun 22 has a gun housing 31, at the front end of a nozzle 32 is arranged.
  • the main jet or main spray direction of the nozzle 32 is indicated by the axis A2.
  • the jet direction is designated, in which the nozzle mainly sprays the powder.
  • a nozzle with a circular nozzle orifice produces a conical powder jet whose main radiation direction is the axis of symmetry of the cone.
  • the main beam direction A2 deviates from the longitudinal axis A1 of the spray gun 22 by the angle ⁇ .
  • the powder is sprayed annularly through the nozzle 32, if the to be coated Surface at right angles to the longitudinal axis A1 of the spray gun 22 is.
  • the diameter of the ring depends inter alia on the angle ⁇ and the distance of the surface of the nozzle 32 from. In addition, depending on the orientation of the workpiece to be coated and alignment of the nozzle 32 can also produce other shapes.
  • the angle ⁇ may be, for example, between 0 and 90 degrees.
  • the spray gun 22 is supplied with compressed air and powder.
  • an electrical connection is additionally provided on the spray gun 22.
  • the length of the neck 35 of the spray gun 22 is adapted to the technical needs. For example, in FIG. 4 the neck 35 short trained.
  • two spray guns 22.3 and 22.4 by means of a common spray gun extension 41, 42 may be arranged side by side.
  • the two spray guns 22.3 and 22.4 are connected to each other via the cross bar 42.
  • To the cross bar 42 includes a tubular extension 41, which in turn at its end 41.1 via a holder 60, as for example in FIG. 5 is shown connected to the guide arm 27.
  • the two spray guns 22.3 and 22.4 do not rotate about their own longitudinal axis, but about the longitudinal axis A1 '' of the extension 41.
  • the spray guns are mounted directly or via the extensions 25.1 and 41 of the spray guns in a holder 60, which has a rotary drive having.
  • a possible embodiment of such a holder 60 is shown in principle in the plan view.
  • the extension 25.1 is mounted in the housing 61 of the holder 60 via a first and a second bearing 66.1 and 66.2.
  • the two bearings 66.1 and 66.2 are dustproof, so that no powder dust can penetrate into the interior of the housing 61.
  • the housing 61 is closed with a cover 65, which closes the housing 61 preferably dustproof.
  • a drive preferably a stepping motor 63 is arranged, which drives a further gear 62 via a gear 64, which in turn is positively or non-positively connected to the extension 25.1.
  • the orientation of the nozzle 32 of the spray gun 22 can then be determined in a simple manner via the stepping motor 63.
  • FIG. 5B the holder 60 is shown in section.
  • the cutting line runs along the in FIG. 5A shown line AA.

Landscapes

  • Spray Control Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Nozzles (AREA)

Claims (14)

  1. Dispositif permettant de recouvrir une pièce à usiner avec de la poudre,
    dans lequel l'on a un dispositif de pulvérisation de poudre (22.1) avec un axe longitudinal (A1) et une direction de pulvérisation principale (A2), la direction de pulvérisation principale s'écartant par rapport à l'axe longitudinal (A1),
    dans lequel l'on a un élément de support (60, 24.1, 23.1, 27),
    auquel cas le dispositif de pulvérisation de poudre (22.1) est logé de sorte à tourner autour d'un axe de rotation (A1') par rapport à l'élément de support (60, 24.1, 23.1, 27) et la direction de pulvérisation principale (A2) pour la poudre s'écarte par rapport à l'axe de rotation (A1'),
    dans lequel l'on a un premier axe linéaire (23.1), à l'aide duquel le dispositif de pulvérisation de poudre (22.1) est déplaçable en translation sur un premier axe (y), et
    dans lequel le premier axe linéaire (23.1) est couplé à un deuxième axe linéaire (24.1), à l'aide duquel le dispositif de pulvérisation de poudre (22.1) est déplaçable en translation sur un deuxième axe (z).
  2. Le dispositif selon la revendication 1,
    dans lequel l'axe de rotation (A1') passe parallèlement par rapport à l'axe longitudinal (A1) du dispositif de pulvérisation de poudre (22.1).
  3. Le dispositif selon la revendication 1 ou 2,
    dans lequel le dispositif de pulvérisation de poudre (22.1) présente une buse (32), auquel cas l'orientation de la buse (32) indique la direction de pulvérisation principale (A2).
  4. Le dispositif selon la revendication 1, 2 ou 3,
    dans lequel le dispositif de pulvérisation de poudre (22.1) est formé en tant que pistolet pulvérisateur (22).
  5. Le dispositif selon une des revendications de 1 à 4,
    dans lequel l'on a une cabine (1), dans laquelle le dispositif de pulvérisation de poudre (22.1) pénètre.
  6. Le dispositif selon la revendication 5,
    dans lequel l'élément de support (60, 24.1, 23.1, 27) présente une fixation (60) et un bras conducteur (27),
    auquel cas le dispositif de pulvérisation de poudre (22.1) est relié à travers la fixation (60) au bras conducteur (27), et auquel cas le bras conducteur (27) et la fixation (60) sont placés à l'extérieur de la cabine (1).
  7. Le dispositif selon la revendication 6,
    dans lequel la fixation (60) présente un dispositif d'entraînement (63, 64, 62) permettant la rotation du dispositif de pulvérisation de poudre (22.1).
  8. Le dispositif selon la revendication 7,
    dans lequel le dispositif d'entraînement (63, 64, 62) présente un moteur pas à pas (63).
  9. Le dispositif selon une des revendications de 1 à 8, avec un ultérieur dispositif de pulvérisation de poudre (22.2).
  10. Le dispositif selon la revendication 9,
    dans lequel le dispositif de pulvérisation de poudre (22.1) et l'ultérieur dispositif de pulvérisation de poudre (22.2) sont reliés à travers la fixation (60) et le premier et/ou le deuxième axe linéaire (23.1, 24.1) au bras conducteur (27).
  11. Le dispositif selon la revendication 9 ou 10,
    dans lequel l'ultérieur dispositif de pulvérisation de poudre (22.2) est relié à travers une fixation ultérieure au bras conducteur (27).
  12. Le dispositif selon une des revendications de 9 à 11,
    dans lequel le dispositif de pulvérisation de poudre (22.1) est agencé sur un premier côté longitudinal (8.1) de la cabine (1),
    dans lequel l'ultérieur dispositif de pulvérisation de poudre (22.2) est agencé sur un deuxième côté longitudinal (8.2) de la cabine (1).
  13. Le dispositif selon une des revendications de 1 à 12,
    dans lequel une commande (5) est prévue pour la rotation et les translations du dispositif de pulvérisation de poudre (22.1).
  14. Le dispositif selon une des revendications de 1 à 13,
    dans lequel un troisième axe longitudinal est prévu, à travers lequel le bras conducteur (27) est agencé de façon à être mobile sur un troisième axe (x).
EP03405774A 2002-11-08 2003-10-28 Dispositif de revêtement de pièces avec poudre Expired - Fee Related EP1419824B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20217416U DE20217416U1 (de) 2002-11-08 2002-11-08 Vorrichtung zum Beschichten eines Werkstücks mit Pulver
DE20217416U 2002-11-08

Publications (2)

Publication Number Publication Date
EP1419824A1 EP1419824A1 (fr) 2004-05-19
EP1419824B1 true EP1419824B1 (fr) 2009-01-07

Family

ID=7976850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405774A Expired - Fee Related EP1419824B1 (fr) 2002-11-08 2003-10-28 Dispositif de revêtement de pièces avec poudre

Country Status (3)

Country Link
US (1) US6972053B2 (fr)
EP (1) EP1419824B1 (fr)
DE (2) DE20217416U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN107096659A (zh) * 2017-04-06 2017-08-29 天长市金陵电子有限责任公司 一种用于工件表面静电粉末喷涂机

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DE10359280A1 (de) * 2003-12-17 2005-07-21 Itw Gema Ag Sprühbeschichtungsvorrichtung
DE102004034021B4 (de) * 2004-07-14 2008-06-19 Venjakob Maschinenbau Gmbh & Co. Kg Verstelleinheit für eine Pistole einer Lackiereinrichtung und Lackieranlage
CN103008151B (zh) * 2012-12-06 2016-01-06 中山市君禾机电设备有限公司 一种用于卫星天线喷涂的往复机
CN106925474A (zh) * 2017-01-19 2017-07-07 浙江精劲机械有限公司 一种机筒内壁合金涂层设备
CN113426598B (zh) * 2021-07-22 2024-02-27 山东中亿木业有限公司 一种板材喷涂系统
CN114832989A (zh) * 2022-05-21 2022-08-02 深圳市平成机械有限公司 一种表面喷涂均匀的垂直吊挂式喷涂输送流水线
CN114950794B (zh) * 2022-07-07 2023-05-12 广东景元设备有限公司 一种固定悬架式柜体内腔粉末喷涂机
DE102022119668A1 (de) 2022-08-04 2024-02-15 Gema Switzerland Gmbh Anordnung und verfahren zum vorzugsweise automatischen beschichten von gegenständen
CN115318519B (zh) * 2022-08-31 2024-05-28 无锡市晟然智能装备有限公司 一种静电喷涂装置
CN116140108B (zh) * 2022-12-14 2024-01-23 盐城幼儿师范高等专科学校 一种钢结构的表面油漆喷涂装置

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Publication number Priority date Publication date Assignee Title
CN107096659A (zh) * 2017-04-06 2017-08-29 天长市金陵电子有限责任公司 一种用于工件表面静电粉末喷涂机

Also Published As

Publication number Publication date
DE20217416U1 (de) 2003-05-28
DE50311041D1 (de) 2009-02-26
US6972053B2 (en) 2005-12-06
EP1419824A1 (fr) 2004-05-19
US20040134422A1 (en) 2004-07-15

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