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EP1353757B1 - Device for coating an elongated workpiece - Google Patents

Device for coating an elongated workpiece Download PDF

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Publication number
EP1353757B1
EP1353757B1 EP02708267A EP02708267A EP1353757B1 EP 1353757 B1 EP1353757 B1 EP 1353757B1 EP 02708267 A EP02708267 A EP 02708267A EP 02708267 A EP02708267 A EP 02708267A EP 1353757 B1 EP1353757 B1 EP 1353757B1
Authority
EP
European Patent Office
Prior art keywords
coating
workpiece
outlet guide
frame
discharge guide
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
EP02708267A
Other languages
German (de)
French (fr)
Other versions
EP1353757A1 (en
Inventor
Stefan Schiele
Uwe Steinfink
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.)
Josef Schiele OHG
Original Assignee
Josef Schiele OHG
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Filing date
Publication date
Application filed by Josef Schiele OHG filed Critical Josef Schiele OHG
Publication of EP1353757A1 publication Critical patent/EP1353757A1/en
Application granted granted Critical
Publication of EP1353757B1 publication Critical patent/EP1353757B1/en
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
    • 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
    • B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe

Definitions

  • the invention relates to a device for applying a Coating medium on at least a partial surface of an elongated and in its longitudinal direction transported workpiece, consisting of a with Vacuum applied coating chamber with a Einlennematritze and a Auslrawmatritze, a coating frame and in front of Auslenfinmatritze arranged outlet guide.
  • coating media are pumpable and filterable, nozzle-accessible Liquids such as pigment solutions, paints, varnishes, primers and Impregnating used.
  • the workpiece moved through a coating chamber to which a vacuum line connected.
  • the coating chamber is for the passage of the workpiece provided with a Einlönmatritze and a Auslenfinmatritze, both the Cross section of the workpiece adapted, but larger by a predetermined amount are formed, so that a circumferential, constant gap between the Surface of the workpiece and the matrices is present.
  • Document DE-A-2 213 984 discloses to the preamble a coating apparatus according to claim 1.
  • the invention is based on the object, a device for applying a Coating medium on at least a partial surface of an elongated and show in his longitudinal direction transported workpiece, in the without additional effort a more even and constant order of the Coating medium is achieved, even at higher production speeds still allows a very good quality of the coating. additionally should in a three-sided coating the previously always required mask omitted.
  • Such an embodiment of the device is also at relatively high feed speeds, a uniform and constant coating reached.
  • the occurrence of defects is avoided, but at least in considerably reduced.
  • the coating chamber can be made shorter so that results in smaller order units.
  • the order of the Coating medium can be better controlled and the end of a Workpiece resulting bead from the coating agent can be reduced become.
  • the coating frame is according to another embodiment of the invention either connected to the outlet guide or integrated in the outlet guide.
  • FIG. 1 is of a device for applying a Coating medium on at least a partial surface of an elongated and in its longitudinal direction according to the arrow 1 transported workpiece 2 only one Coating chamber 3, which is connected to a vacuum line 4.
  • This coating chamber 3 has on the one hand an inlet die 5 and on the other hand, a Auslönmatritze 6, whose cross section corresponds to the cross section of Workpiece 2 corresponds, however, is slightly larger on all sides, so that around the Workpiece 2 on all sides a gap 7 predetermined size extends.
  • About the column 7 is due to the applied to the coating chamber 3 vacuum air from sucked outside. Due to the size or the cross section of the column 7 can now a vacuum of predetermined size in the coating chamber 3 can be achieved.
  • an outlet guide 8 In the coating chamber 3 is located at a distance from the Auslönmatritze. 6 an outlet guide 8, a positionally accurate transport of the workpiece. 2 ensures.
  • this outlet guide 8 is shown in the Embodiment, a channel 9, which is not shown in the drawing Line with a coating medium, such as paint, is applied. From this channel 9 performs a so-called flat nozzle 10 to the outside in the direction the workpiece 2. About this flat nozzle 10 is now the coating medium at least a part of the surface of the elongate workpiece 2 applied or sprayed on. Due to the fact that the application of the coating medium - in Transport direction of the workpiece 2 seen - takes place behind the outlet guide 8, are no defects of the coating on the workpiece 2 by the same generated.
  • the coating is now in the transport direction of the workpiece 2 the same applied. Through the gap 7 in the Auslönmatritze. 6 sucked air, excess coating medium is entrained.
  • the Coating medium achieved by this embodiment at all provided Make the workpiece 2, so that also relevant defects excluded are.

Landscapes

  • Coating Apparatus (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

The invention relates to a device for applying a coating medium to at least one part of the surface of an elongated workpiece (2) which is transported in its longitudinal direction. Said device consists of a coating chamber (3) which is subjected to a vacuum (3) and comprises an inlet matrix (5) and an outlet matrix (6), a coating frame (10) and an outlet guide (8) which is arranged upstream in relation to the outlet matrix (6).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Auftragen eines Beschichtungsmediums auf zumindest eine Teiloberfläche eines langgestreckten und in seiner Längsrichtung transportierten Werkstückes, bestehend aus einer mit Vakuum beaufschlagbaren Beschichtungskammer mit einer Einlaßmatritze und einer Auslaßmatritze, einem Beschichtungsrahmen und einer vor der Auslaßmatritze angeordneten Auslaufführung.The invention relates to a device for applying a Coating medium on at least a partial surface of an elongated and in its longitudinal direction transported workpiece, consisting of a with Vacuum applied coating chamber with a Einlaßmatritze and a Auslaßmatritze, a coating frame and in front of Auslaßmatritze arranged outlet guide.

Es ist bekannt, langgestreckte und in ihrer Längsrichtung transportierte Werkstücke zumindest auf einem Teil ihrer Oberfläche mit einem Beschichtungsmedium zu versehen. Als Beschichtungsmedien werden pump- und filterfähige, düsengängige Flüssigkeiten wie Pigmentlösungen, Farben, Lacke, Grundierungen und Imprägnierungsmittel eingesetzt. Für den Beschichtungsvorgang wird das Werkstück durch eine Beschichtungskammer bewegt, an die eine Vakuumleitung angeschlossen ist. Die Beschichtungskammer ist für den Durchlaß des Werkstückes mit einer Einlaßmatritze und einer Auslaßmatritze versehen, die beide dem Querschnitt des Werkstückes angepaßt, jedoch um ein vorgegebenes Maß größer ausgebildet sind, so dass ein umlaufender, gleichbleibender Spalt zwischen der Oberfläche des Werkstückes und den Matritzen vorhanden ist. Über den Spalt in der Einlaßmatritze und in der Auslaßmatritze wird Luft von außen angesaugt, so dass sich in der Beschichtungskammer ein Vakuum angestrebter Größe einstellt. Am Eingang der Beschichtungskammer, also kurz hinter der Einlaßmatritze, ist ein Beschichtungsrahmen vorgesehen, der entweder mehrere Bohrungen oder mehrere Flachstrahldüsen besitzt, über die das Beschichtungsmedium zumindest auf einen Teil der Oberfläche des Werkstückes aufgesprüht wird. Hinter dem Beschichtungsrahmen befindet sich mit Abstand vor der Auslaßmatritze noch eine Auslaufführung für das Werkstück. Bei einer derartigen Vorrichtung wird das Beschichtungsmedium am Eingang der Beschichtungskammer immer entgegen der Luftströmung auf das Werkstück aufgetragen. Dabei besteht die Gefahr, dass das Beschichtungsmedium, zumindest stellenweise, das Werkstück nicht erreicht. Bei einer verhältnismäßig dünnen Beschichtung kann es darüber hinaus noch im Bereich der Auslaufführung zu Fehlstellen kommen, da an den Berührungspunkten keine sogenannte Verschlichtung der Beschichtung durch angesaugte Luft erfolgt.It is known, elongated and transported in their longitudinal direction workpieces at least on a part of its surface with a coating medium Mistake. As coating media are pumpable and filterable, nozzle-accessible Liquids such as pigment solutions, paints, varnishes, primers and Impregnating used. For the coating process, the workpiece moved through a coating chamber to which a vacuum line connected. The coating chamber is for the passage of the workpiece provided with a Einlaßmatritze and a Auslaßmatritze, both the Cross section of the workpiece adapted, but larger by a predetermined amount are formed, so that a circumferential, constant gap between the Surface of the workpiece and the matrices is present. Over the gap in the Einlaßmatritze and in the Auslaßmatritze air is sucked from the outside, so that a vacuum of the desired size is established in the coating chamber. At the Entrance of the coating chamber, so just behind the Einlaßmatritze is a Coating frame provided, either several holes or more Flat jet nozzles, over which the coating medium at least one Part of the surface of the workpiece is sprayed. Behind the Coating frame is at a distance in front of Auslaßmatritze still one Outlet guide for the workpiece. In such a device, the Coating medium at the entrance of the coating chamber always opposite Air flow applied to the workpiece. There is a risk that the Coating medium, at least in places, the workpiece is not reached. at In addition, a relatively thin coating may still be in the range the outlet guide come to defects, since at the points of contact no So-called sizing of the coating is done by sucked air.

Dokument DE-A-2 213 984 offenbart dem Oberbegrift eine Beschichtungsvorrichtung nach von Anspruch 1. Document DE-A-2 213 984 discloses to the preamble a coating apparatus according to claim 1.

Der Erfindung liegt nun die Aufgabe zugrunde, eine Vorrichtung zum Auftragen eines Beschichtungsmediums auf zumindest einer Teiloberfläche eines langgestreckten und in seiner Längsrichtung transportierten Werkstückes aufzuzeigen, bei der ohne zusätzlichen Aufwand ein gleichmäßigerer und konstanter Auftrag des Beschichtungsmediums erreicht wird, der auch bei höheren Produktionsgeschwindigkeiten noch eine sehr gute Qualität der Beschichtung zuläßt. Zusätzlich soll bei einer dreiseitigen Beschichtung die bisher immer erforderliche Abdeckmaske entfallen.The invention is based on the object, a device for applying a Coating medium on at least a partial surface of an elongated and show in his longitudinal direction transported workpiece, in the without additional effort a more even and constant order of the Coating medium is achieved, even at higher production speeds still allows a very good quality of the coating. additionally should in a three-sided coating the previously always required mask omitted.

Zur Lösung dieser Aufgabe wird gemäß der Erfindung bei einer Vorrichtung der eingangs beschriebenen Gattung vorgeschlagen, dass der Beschichtungsrahmen als Flachdüse ausgebildet und zwischen der Auslaufführung und der Auslaßmatritze angeordnet ist.To solve this problem is according to the invention in a device of initially described genus proposed that the coating frame as Flat nozzle formed and between the outlet guide and the Auslaßmatritze is arranged.

Durch eine derartige Ausgestaltung der Vorrichtung wird auch bei verhältnismäßig hohen Vorschubgeschwindigkeiten eine gleichmäßige und konstante Beschichtung erreicht. Das Auftreten von Fehlstellen wird vermieden, zumindest aber in erheblichem Maße reduziert. Die Beschichtungskammer kann kürzer ausgebildet sein, so dass sich kleinere Auftragseinheiten ergeben. Der Auftrag des Beschichtungsmediums kann besser gesteuert werden und der am Ende eines Werkstückes entstehende Wulst aus dem Beschichtungsmittel kann reduziert werden.By such an embodiment of the device is also at relatively high feed speeds, a uniform and constant coating reached. The occurrence of defects is avoided, but at least in considerably reduced. The coating chamber can be made shorter so that results in smaller order units. The order of the Coating medium can be better controlled and the end of a Workpiece resulting bead from the coating agent can be reduced become.

Der Beschichtungsrahmen ist gemäß einer weiteren Ausgestaltung der Erfindung entweder mit der Auslaufführung verbunden oder in der Auslaufführung integriert.The coating frame is according to another embodiment of the invention either connected to the outlet guide or integrated in the outlet guide.

Die Erfindung wird nachfolgend anhand eines in einer Zeichnung in vereinfachter Weise und nicht unbedingt maßgerecht dargestellten Ausführungsbeispieles näher erläutert.The invention is described below with reference to a simplified in a drawing Way and not necessarily to scale illustrated embodiment closer explained.

In dieser Zeichnung ist von einer Vorrichtung zum Auftragen eines Beschichtungsmediums auf zumindest eine Teiloberfläche eines langgestreckten und in seiner Längsrichtung gemäß dem Pfeil 1 transportierten Werkstückes 2 nur eine Beschichtungskammer 3 gezeigt, die an eine Vakuumleitung 4 angeschlossen ist. Diese Beschichtungskammer 3 besitzt einerseits eine Einlaßmatritze 5 und andererseits eine Auslaßmatritze 6, deren Querschnitt dem Querschnitt des Werkstückes 2 entspricht, allseitig jedoch geringfügig größer ist, so dass sich um das Werkstück 2 allseitig ein Spalt 7 vorgegebener Größe erstreckt. Über die Spalte 7 wird aufgrund des an die Beschichtungskammer 3 angelegten Vakuums Luft von außen angesaugt. Aufgrund der Größe bzw. dem Querschnitt der Spalte 7 kann nun ein Vakuum vorgegebener Größe in der Beschichtungskammer 3 erreicht werden.In this drawing is of a device for applying a Coating medium on at least a partial surface of an elongated and in its longitudinal direction according to the arrow 1 transported workpiece 2 only one Coating chamber 3, which is connected to a vacuum line 4. This coating chamber 3 has on the one hand an inlet die 5 and on the other hand, a Auslaßmatritze 6, whose cross section corresponds to the cross section of Workpiece 2 corresponds, however, is slightly larger on all sides, so that around the Workpiece 2 on all sides a gap 7 predetermined size extends. About the column 7 is due to the applied to the coating chamber 3 vacuum air from sucked outside. Due to the size or the cross section of the column 7 can now a vacuum of predetermined size in the coating chamber 3 can be achieved.

In der Beschichtungskammer 3 befindet sich mit Abstand von der Auslaßmatritze 6 eine Auslaufführung 8, die einen lagegenauen Transport des Werkstückes 2 sicherstellt. In dieser Auslaufführung 8 befindet sich im dargestellten Ausführungsbeispiel ein Kanal 9, der über eine in der Zeichnung nicht dargestellte Leitung mit einem Beschichtungsmedium, beispielsweise Lack, beaufschlagt wird. Von diesem Kanal 9 führt eine sogenannte Flachdüse 10 nach außen in Richtung auf das Werkstück 2. Über diese Flachdüse 10 wird nun das Beschichtungsmedium auf zumindest einen Teil der Oberfläche des langgestreckten Werkstückes 2 aufgetragen bzw. aufgesprüht. Dadurch bedingt, dass der Auftrag des Beschichtungsmediums - in Transportrichtung des Werkstückes 2 gesehen - hinter der Auslaufführung 8 erfolgt, werden durch dieselbe keine Fehlstellen der Beschichtung auf dem Werkstück 2 erzeugt. Die Beschichtung wird jetzt in Transportrichtung des Werkstückes 2 auf dasselbe aufgetragen. Durch die über den Spalt 7 in der Auslaßmatritze 6 angesaugte Luft, wird überschüssiges Beschichtungsmedium mitgerissen. Das Beschichtungsmedium erreicht durch diese Ausgestaltung an allen vorgesehenen Stellen das Werkstück 2, so dass auch diesbezügliche Fehlstellen ausgeschlossen sind.In the coating chamber 3 is located at a distance from the Auslaßmatritze. 6 an outlet guide 8, a positionally accurate transport of the workpiece. 2 ensures. In this outlet guide 8 is shown in the Embodiment, a channel 9, which is not shown in the drawing Line with a coating medium, such as paint, is applied. From this channel 9 performs a so-called flat nozzle 10 to the outside in the direction the workpiece 2. About this flat nozzle 10 is now the coating medium at least a part of the surface of the elongate workpiece 2 applied or sprayed on. Due to the fact that the application of the coating medium - in Transport direction of the workpiece 2 seen - takes place behind the outlet guide 8, are no defects of the coating on the workpiece 2 by the same generated. The coating is now in the transport direction of the workpiece 2 the same applied. Through the gap 7 in the Auslaßmatritze. 6 sucked air, excess coating medium is entrained. The Coating medium achieved by this embodiment at all provided Make the workpiece 2, so that also relevant defects excluded are.

Während beim dargestellten und beschriebenen Ausführungsbeispiel der als Flachdüse 10 ausgebildete Beschichtungsrahmen in der Auslaufführung 8 integriert ist, kann derselbe auch als getrennter Rahmen ausgebildet sein, der entweder mit der Auslaufführung 8 verbunden oder als getrenntes Bauteil zwischen der Auslaufführung 8 und der Auslaßmatritze 6 angeordnet ist.While in the illustrated and described embodiment of the as Flat nozzle 10 formed coating frame integrated in the outlet guide 8 is the same can also be designed as a separate frame, either with the outlet guide 8 connected or as a separate component between the Outlet guide 8 and the Auslaßmatritze 6 is arranged.

Claims (3)

  1. A device for applying a coating medium onto at least one surface portion of an elongate workpiece conveyed lengthwise, said device consisting of a coating chamber to which a vacuum may be applied and having a shape conforming inlet orifice and a shape conforming outlet orifice, a coating frame and a discharge guide disposed in front of the shape conforming outlet orifice, characterized in that the coating frame is configured to be a sheet die (10) and is disposed between the discharge guide (8) and the shape conforming outlet orifice (6).
  2. The device as set forth in claim 1, characterized in that the coating frame is connected to the discharge guide (8).
  3. The device as set forth in claim 1, characterized in that the coating frame is integrated in the discharge guide (8).
EP02708267A 2001-01-12 2002-01-09 Device for coating an elongated workpiece Expired - Lifetime EP1353757B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20100504U 2001-01-12
DE20100504U DE20100504U1 (en) 2001-01-12 2001-01-12 Coating device for an elongated workpiece
PCT/EP2002/000135 WO2002055214A1 (en) 2001-01-12 2002-01-09 Device for coating an elongated workpiece

Publications (2)

Publication Number Publication Date
EP1353757A1 EP1353757A1 (en) 2003-10-22
EP1353757B1 true EP1353757B1 (en) 2005-06-15

Family

ID=7951495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02708267A Expired - Lifetime EP1353757B1 (en) 2001-01-12 2002-01-09 Device for coating an elongated workpiece

Country Status (4)

Country Link
EP (1) EP1353757B1 (en)
AT (1) ATE297814T1 (en)
DE (2) DE20100504U1 (en)
WO (1) WO2002055214A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6805910B1 (en) 2001-09-17 2004-10-19 Hunter Douglas, Inc. Process for applying coatings
DE102004057299A1 (en) * 2004-11-26 2006-06-01 Josef Schiele Ohg Apparatus for applying a coating medium to elongated workpieces with a guide device
DE102006046797A1 (en) * 2006-09-29 2008-04-03 Josef Schiele Ohg Method for uniformly applying a passivating agent on a metallic workpiece which can be adjusted in height and width comprises applying a negative pressure in the application chamber during application of the passivating agent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2213984C2 (en) * 1972-03-22 1982-12-16 Philipp Holzmann Ag, 6000 Frankfurt Steel bar spraying equipment - has mixing chamber for compressed-air and rust-protecting agent before annular gap
SE469267B (en) * 1991-07-01 1993-06-14 Candor Sweden Ab Surface treatment device, whereby a medium under pressure is aimed at a continuous material web in a cavity
US5316588A (en) * 1992-06-16 1994-05-31 Amcol Corporation System for spraying material on tubing and reclaiming excess material

Also Published As

Publication number Publication date
DE50203407D1 (en) 2005-07-21
DE20100504U1 (en) 2001-05-10
EP1353757A1 (en) 2003-10-22
WO2002055214A1 (en) 2002-07-18
ATE297814T1 (en) 2005-07-15

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