EP2409778B1 - Dispositif de revêtement pour pièces usinées allongées - Google Patents

Dispositif de revêtement pour pièces usinées allongées Download PDF

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Publication number
EP2409778B1
EP2409778B1 EP11174355.5A EP11174355A EP2409778B1 EP 2409778 B1 EP2409778 B1 EP 2409778B1 EP 11174355 A EP11174355 A EP 11174355A EP 2409778 B1 EP2409778 B1 EP 2409778B1
Authority
EP
European Patent Office
Prior art keywords
coating
blow
suction chamber
coating device
workpiece
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.)
Not-in-force
Application number
EP11174355.5A
Other languages
German (de)
English (en)
Other versions
EP2409778A1 (fr
Inventor
Gerhard Stahl
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.)
Cefla Deutschland GmbH
Original Assignee
Cefla Deutschland GmbH
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 Cefla Deutschland GmbH filed Critical Cefla Deutschland GmbH
Publication of EP2409778A1 publication Critical patent/EP2409778A1/fr
Application granted granted Critical
Publication of EP2409778B1 publication Critical patent/EP2409778B1/fr
Not-in-force legal-status Critical Current
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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • 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
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated

Definitions

  • the invention relates to a coating device for elongated workpieces.
  • the workpiece is usually continuously through a suction, in which negative pressure prevails.
  • the inlet and the outlet opening of the suction chamber, through which the workpiece is guided in this case preferably has a die.
  • the matrix is modeled on the outer contour of the workpiece, so that a small gap remains between the die opening and the workpiece.
  • the suction chamber is connected to a vacuum pump to create negative pressure within the suction chamber. In this case, ambient air is sucked through the gap between the die and the workpiece in the suction chamber.
  • coating material such as paint is supplied to the suction chamber, wherein due to the turbulence occurring in the air entering the chamber, a corresponding swirling of the coating medium and thus the generation of a mist is caused.
  • a coating apparatus with a conveyor for moving elongated workpieces through a coating chamber is known.
  • a fan nozzle is provided outside of the coating chamber, by means of which the application fog on the coating material can be changed.
  • DE 42 35 651 describes a coating apparatus for elongate workpieces having Abblasdüsen for blowing off material.
  • Corresponding blow-off nozzles can be arranged outside the outlet die or inside the suction chamber.
  • the injection frame has an opening through which the workpiece is passed. The cross-section of the opening is modeled on the profile of the workpiece, so that a gap between the workpiece and spray frame is formed.
  • Within the spray frame several holes are provided, which are aligned either horizontally or vertically. The hole points in the direction of the workpiece and serves as a nozzle.
  • an elongate workpiece such as a wooden board
  • a wooden board which is exposed to the weather must have a thicker layer on the surfaces exposed to the weather than on a surface not exposed to the weather.
  • the wood should not remain untreated on this surface.
  • the layer thickness to be applied depends on the state of the art according to the maximum required layer thickness, so that a surface, for example, not exposed to the weather, is too thick for the requirements Coating has. Different layer thicknesses could be produced by the fact that the individual surfaces take place successively in separate coating processes. However, this is very expensive and is only in very expensive coating compositions in relation to the saved amount of coating agent.
  • Object of the invention to provide a simple and inexpensive coating device for elongated workpieces.
  • the coating device according to the invention for elongated workpieces which are in particular elongated profiles made of wood or plastic, has a conveying device for moving the workpiece in the longitudinal direction.
  • the conveyor is, for example, a conveyor belt, a plurality of driven and non-driven conveyor rollers and the like.
  • the coating device has a suction chamber, through which the workpiece is passed.
  • the suction chamber is preferably used for removing excess coating material.
  • the suction chamber is preferably connected to a suction device.
  • the suction device can generate negative pressure in the suction chamber.
  • the suction chamber has an inlet opening and an outlet opening, through which the workpiece is passed.
  • a die is preferably arranged in the inlet and / or the outlet opening.
  • the die preferably has a die opening whose cross-section substantially corresponds to the profile of the workpiece, wherein a gap is formed between the workpiece and the die opening.
  • the inlet and / or the outlet opening itself can be chosen such that it corresponds substantially in cross-section of the profile of the workpiece, so that a die does not absolutely necessary.
  • the provision of matrices has the advantage that the coating device can be used for coating different profiles and for this only the matrices would have to be changed or adapted.
  • the coating device has an application device for applying a coating medium on at least one preferably a plurality of surfaces of the workpiece.
  • the coating device has a blow-off device.
  • a blow-off device By providing a blow-off device, it is possible to remove part of the coating medium applied to a surface again.
  • one of the surfaces can be blown off with the aid of a blow-off device, so that the coating thickness at this surface is reduced.
  • a considerable saving in coating material is possible in a simple manner. For example, thus, the back of a workpiece, which is not visible after installation of the workpiece or is exposed to no / less load, be provided with a smaller layer thickness.
  • the vent may be used in addition to or instead of reducing a total layer thickness of a surface to ensure that no layer is too thick in certain areas of the workpiece.
  • the blower can thus blow off areas in which coating material collects. For example, these may be narrow or narrow gaps which are also added by the coating material or in which too much coating material accumulates. Also, the blower can for removing coating material from recesses such as holes and the like. be used.
  • the blow-off device has a nozzle, by means of which preferably air is blown onto the workpiece.
  • the nozzle is connected via a supply line to a pump or a compressor. It is also possible to supply gases other than air through the nozzle. These may, for example, be gases which react with the coating material in order to influence the properties of the coating material, such as the design of the surface structure.
  • the blow-off device has a slit nozzle, wherein the gap when blowing off a surface preferably extends transversely to this and thus in particular transversely to the transport direction.
  • the blower is disposed within the suction chamber.
  • a suction device in particular having a vacuum pump, and optionally returned to the application device after a cleaning and / or filtering process.
  • a return of the coating medium for example, in a supply reservoir of the applicator is made possible.
  • blow-off device can thus, in addition to the adjustment of the layer thickness of all coated surfaces, reduce the layer thickness of predetermined regions of the workpiece, in particular one of the surfaces.
  • the production of the layer thickness in non-deflated areas is preferably carried out by the Application device which has a plurality of spray nozzles, on the spray pressure and on the height of the negative pressure prevailing in the suction chamber.
  • the applicator is preferably arranged in the region of the inlet and / or the outlet opening. It is particularly preferred here that the application device is integrated in the inlet die and / or the outlet die. As a result, it is possible in a simple manner to exchange the application device, for example, for cleaning clogged nozzles, etc.
  • the application device preferably has nozzles pointing into the suction chamber.
  • the nozzles which are designed in particular as slit nozzles, deliver coating material, such as a coating varnish, in the direction of the workpiece and also in the direction of the interior of the suction chamber. Not used for coating the workpiece surface coating material is thus removed via the suction chamber.
  • the applicator integrated in the inlet and / or outlet die in a particularly preferred embodiment of the invention preferably has a plurality of nozzles. These can be arranged around the entire circumference of the die opening, so that a coating of all workpiece surfaces is possible. In particular, however, it is also possible to have only one or more nozzles on individual sides of the die opening or, depending on the coating requirement, to switch off individual nozzles or not to supply them with coating material. In particular, by the ability to switch off or close individual nozzles, it is possible to coat with a die depending on the control of the nozzle different surfaces of the workpiece. For this purpose, it is preferred that each nozzle or a group of nozzles, each with a separate supply line, is connected to the supply of coating material. By switching off or closing a corresponding valve in the supply line, it is thus possible to switch off individual or groups of nozzles.
  • the blower is integrated into the inlet and / or outlet die.
  • the blow-off device is easily accessible for connecting a supply line for air or other gases and is less contaminated by the blower with coating material, as in an arrangement of the blower within the suction.
  • the nozzle of a blow-off device which is preferably a gap or slot nozzle, to point into the suction chamber. The blowing direction of the blower thus points into the suction chamber.
  • the air or gas jet strikes the surface to be blasted in the vicinity of the inlet and / or outlet die.
  • the air flow entering through the gap between the workpiece and the die also enters the suction chamber.
  • the two flows are rectified or oppositely directed, depending on whether the blow-off device is arranged in the inlet die or the outlet die.
  • the amount of the blown coating medium can be influenced. This can also be done by setting a distance between the blow-off device, in particular the nozzle and the surface to be blown off and / or the blow-off pressure.
  • the blow-off device is connected to a control device.
  • the control device in particular the blow-off can be controlled, which takes place in particular by varying the blow-off.
  • a change in the distance between blower and workpiece by the blower is connected, for example, with a servomotor.
  • temporal blow-off phases can also be predetermined by the control device. In the individual phases of the pressure can be changed and completely shut off by the blower. This makes it possible, for example, only individual points such as holes and the like. blow off to prevent unwanted accumulation of material in these areas.
  • the embodiment of the coating device according to the invention shown in the figures has a suction chamber 10, which is connected to a suction device, not shown, such as a vacuum pump.
  • the suction of the air from the suction chamber 10 takes place through the side, For example, arranged on a side wall of the suction chamber suction 12.
  • the example cuboid-shaped suction chamber has an inlet opening 14 and an outlet opening 16. Through the two openings 14, 16, a movement of a workpiece 18 in the direction of the arrow 20 takes place.
  • the transport of the workpiece 18, which is, for example, a board, is carried out by a conveyor 22, which is at least partially driven rollers in the illustrated embodiment.
  • a die 24 is arranged both at the inlet opening 14 and at the outlet opening 16.
  • the die 24 has a die opening.
  • the cross section of the die opening corresponds to the cross section of the workpiece 18 to be coated, wherein the cross section of the die opening is slightly larger, so that a gap is formed between the workpiece 18 and an inner side of the die opening.
  • ambient air is drawn from the suction device connected to the suction chamber 10, as indicated by the arrows 30 (FIG. Fig. 1 ), sucked into the suction chamber.
  • coating medium such as paint from the suction chamber is avoided.
  • the coating of all surfaces 31,32,33 of the workpiece 18 takes place on the side of the outlet opening 16 of the suction chamber 10, that is shortly before the exit of the workpiece 18 from the suction chamber 10.
  • 24 nozzles are arranged in the die in particular as slot nozzles 36, 38, 40 ( Fig. 2 ) are formed.
  • the slot nozzles provided in the die are optionally connected to a plurality of supply lines 42.
  • the supply lines 42 are connected to a reservoir, not shown, for the coating agent such as the paint. Further
  • the supply lines are connected to a pump for supplying the coating material to the slit nozzles 36, 38, 40.
  • a blower 44 is integrated into the exit die 24.
  • the blower 44 is connected via a line 46 to a pump for air supply.
  • By the blower 44 thus air is blown in the direction of an arrow 48 on the bottom 33 of the workpiece 18.
  • a part of the coating medium applied to the surface 33 is blown off again.
  • a slot die 50 (FIG. Fig. 2 ) having blower 44 reached.
  • the coating of the underside 33 takes place as indicated by an arrow 52 (FIG. Fig. 1 ).
  • the coating of the surfaces 31, 32, 33, in particular of the underside 33 can also take place by means of a correspondingly formed inlet die 24.
  • even a further coating, as shown by the arrow 52 omitted.
  • the feeding of the coating medium takes place through the slot nozzles 36, 38, 40 (FIG. Fig. 2 ).
  • the blowing off of the upper side 33 takes place by supplying an air flow through the slot nozzle 50.
  • slit nozzles 36, 38, 40 from the supply line 42 with the coating material, to separate and instead to connect to the air supply line 46.

Landscapes

  • Coating Apparatus (AREA)
  • Spray Control Apparatus (AREA)

Claims (9)

  1. Dispositif de revêtement pour des pièces allongées, avec
    un dispositif de transport (22) pour le déplacement de la pièce (18) dans la direction longitudinale (20),
    une chambre d'aspiration (10) à travers laquelle la pièce (18) est guidée,
    un dispositif d'application (36, 38, 40, 42, 44) pour l'application d'un agent de revêtement sur au moins une surface (32) de la pièce (18), et
    un dispositif de purge (44), le dispositif de purge (44) présentant une direction de purge (48) dirigée dans la chambre d'aspiration,
    caractérisé en ce que
    le dispositif de purge (44) est intégré dans la matrice d'entrée et/ou de sortie (24) pour l'enlèvement d'une partie de l'agent de revêtement.
  2. Dispositif de revêtement selon la revendication 1, caractérisé en ce que l'enlèvement de l'agent de revêtement s'effectue au moyen du dispositif de purge (44) sur l'une de plusieurs surfaces (33) revêtues.
  3. Dispositif de revêtement selon la revendication 1 ou 2, caractérisé en ce que le dispositif de purge (44) présente une buse, constituée en particulier en tant que buse à interstice (50), qui souffle de préférence de l'air sur la pièce (18).
  4. Dispositif de revêtement selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de purge (44) est disposé à l'intérieur de la chambre d'aspiration (10).
  5. Dispositif de revêtement selon l'une des revendications 1 à 4, caractérisé par une matrice (24) disposée sur une ouverture d'entrée (14) et/ou une ouverture de sortie (16) de la chambre d'aspiration (10).
  6. Dispositif de revêtement selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif d'application (36, 38, 40, 42, 44) présente des buses (36, 38, 40) dirigées vers l'intérieur de la chambre d'aspiration (10) qui sont de préférence constituées en tant que buses à fente.
  7. Dispositif de revêtement selon l'une des revendications 1 à 6, caractérisé en ce qu'au moins une des plusieurs buses (36, 38, 40) est raccordée à au moins une conduite d'amenée (42).
  8. Dispositif de revêtement selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de purge (44) est raccordé à un dispositif de commande destiné à commander la puissance de purge et/ou des phases de purge temporelles.
  9. Dispositif de revêtement selon l'une des revendications 1 à 8, caractérisé en ce que la chambre d'aspiration (10) est raccordée à un dispositif d'aspiration destiné à produire une dépression.
EP11174355.5A 2010-07-21 2011-07-18 Dispositif de revêtement pour pièces usinées allongées Not-in-force EP2409778B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202010010497U DE202010010497U1 (de) 2010-07-21 2010-07-21 Beschichtungsvorrichtung für langgestreckte Werkstücke

Publications (2)

Publication Number Publication Date
EP2409778A1 EP2409778A1 (fr) 2012-01-25
EP2409778B1 true EP2409778B1 (fr) 2016-09-07

Family

ID=44582239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11174355.5A Not-in-force EP2409778B1 (fr) 2010-07-21 2011-07-18 Dispositif de revêtement pour pièces usinées allongées

Country Status (2)

Country Link
EP (1) EP2409778B1 (fr)
DE (1) DE202010010497U1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015205338A1 (de) 2015-03-24 2016-09-29 Cefla Deutschland Gmbh Trocknungsvorrichtung
ITFI20150132A1 (it) * 2015-05-08 2016-11-08 Makor S R L Unipersonale Dispositivo e metodo per l'applicazione di un prodotto di copertura superficiale su un elemento profilato
EP3141364B1 (fr) * 2015-09-10 2018-03-14 PolymerTrend LLC. Appareil de revêtement tout autour d'une pièce à usiner
KR102140222B1 (ko) * 2019-03-08 2020-07-31 오형동 알루미늄 냉매 관의 수지 코팅장치
CN112206978A (zh) * 2020-09-23 2021-01-12 广西欣亿光电科技有限公司 一种新型高亮白光Side-LED点胶封装结构
EP4230306A1 (fr) * 2022-02-17 2023-08-23 Josef Schiele Dispositif d'application d'un agent de scellement et procédé d'application d'un agent de scellement
WO2023217598A1 (fr) * 2022-05-11 2023-11-16 Schiele, Josef Dispositif et procédé de revêtement d'une partie, en particulier d'un chanfrein et/ou d'une face frontale, d'une pièce en forme de plaque avec un agent de revêtement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214293U1 (de) * 1992-10-22 1993-03-11 Fa. Josef Schiele, 5476 Niederzissen Durchlauf-Vakuumbeschichtungskammer
DE4235651C2 (de) * 1992-10-22 1996-05-09 Josef Schiele Fa Verfahren zum Durchlauf-Vakuumbeschichten sowie Durchlauf-Vakuumbeschichtungskammer
DE4337438C2 (de) 1993-11-03 1996-03-14 Schiele Josef Verfahren zum Durchlauf-Vakuum-Rundumbeschichten und Vakuum-Durchlauf-Rundum-Beschichtungskammer zur Durchführung des Verfahrens
DE20100503U1 (de) * 2001-01-12 2001-05-10 Josef Schiele oHG, 56651 Niederzissen Beschichtungsvorrichtung für ein langgestrecktes Werkstück
DE102009021782A1 (de) * 2009-05-18 2010-11-25 Delle Vedove Deutschland Gmbh Beschichtungsvorrichtung für langgestreckte Werkstücke

Also Published As

Publication number Publication date
EP2409778A1 (fr) 2012-01-25
DE202010010497U1 (de) 2011-10-24

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