EP3947784A1 - Coating apparatus for coating components - Google Patents

Coating apparatus for coating components

Info

Publication number
EP3947784A1
EP3947784A1 EP20712342.3A EP20712342A EP3947784A1 EP 3947784 A1 EP3947784 A1 EP 3947784A1 EP 20712342 A EP20712342 A EP 20712342A EP 3947784 A1 EP3947784 A1 EP 3947784A1
Authority
EP
European Patent Office
Prior art keywords
component
coating
housing
anode
coating device
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.)
Pending
Application number
EP20712342.3A
Other languages
German (de)
French (fr)
Inventor
Juergen Hackenberg
Michael Lingner
Christoph Roland HOELZL
Frank Miller
Lutz Baumgaertner
Tim Bergmann
Martina BUBRIN
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3947784A1 publication Critical patent/EP3947784A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/005—Contacting devices
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/02—Tanks; Installations therefor
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C25D17/12—Shape or form
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/08—Electroplating with moving electrolyte e.g. jet electroplating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/04—Tubes; Rings; Hollow bodies

Definitions

  • the present invention relates to a coating device for
  • the invention also relates to a coating system.
  • the coating of components, such as spark plug housings, by means of drum coating is known.
  • the components are introduced into a drum as bulk goods, with the components in the drum then going through all coating steps as bulk goods.
  • the coating device according to the invention with the features of claim 1 offers the advantage of an improved device by means of which high-quality coatings of components can be produced in a short time.
  • a coating device which comprises a housing with an outer anode, an inner anode and a voltage generating device.
  • the outer anode is thus part of the housing and is designed to receive the component, which is preferably a spark plug housing, that is to say to grip around the component.
  • the inner anode can be inserted into a through opening of the component.
  • the voltage generating device is set up to generate a first voltage between the outer anode and the component and a second voltage between the inner anode and the component.
  • the housing also has an inlet and an outlet. A process medium can be introduced into the housing through the inlet and the process medium can be discharged from the housing again via the outlet.
  • the coating device is thus designed in such a way that it can each receive exactly one component, with both an outside and an inside of the component being able to be coated, advantageously nickel-plated, completely and with high quality. Due to the direct flow around the component by means of the process medium, a very high
  • Coating speed i.e. a very rapid deposition of a layer on the component, can be achieved.
  • the housing preferably further comprises a cover with a clamping device.
  • the clamping device is designed to clamp the component in order to hold the component in a predefined position within the outer anode. That is, the component is held in a defined manner in the housing by the clamping device alone.
  • the component is particularly preferably a spark plug housing with a
  • the clamping device is set up to clamp the ground electrode. This results in a particularly simple possibility of holding the spark plug housing inside the outer anode.
  • the clamping device is designed so that this one
  • the clamping device covers at least 80%, particularly preferably at least 95% of the surface of the ground electrode in this clamped state. That is, the clamping device engages around the
  • Ground electrode of the spark plug housing in such a way that, on the one hand, this enables the spark plug housing to be held in a defined manner within the outer anode and, on the other hand, that a surface of the ground electrode is largely covered. This prevents the ground electrode from coming into contact with the process medium during the coating process and thus being excluded from the coating. This is particularly advantageous if only a partial coating of the spark plug housing is intended. It is also advantageous if the process medium is a nickel electrolyte. The coating thus corresponds to nickel-plating the component, i.e. a nickel coating is produced on the component.
  • the inner anode is preferably adjustable along a longitudinal axis of the housing in order to adapt the generation of the coating on the inside of the component. For example, a different layer thickness of the coating on the inside of the component can thereby be achieved.
  • the coating device further comprises one
  • the flow control device is a perforated diaphragm, which is preferably rotatable.
  • a rotatable perforated diaphragm can be provided as two disks which can be rotated relative to one another and have several through holes. By turning the two disks against each other, an overlap of the through holes changes, whereby a total free flow cross section, and thus a flow through the housing, can be set.
  • a first flow between the inner anode and / or a second flow between the outer anode and the component can be regulated by means of the flow control device. It is particularly favorable if the first flow and the second flow by means of the
  • Flow regulating device can be regulated independently of one another in order to be able to adapt the flow of the process medium through the housing particularly flexibly to the desired properties of the coating inside and outside of the component.
  • the invention leads to a coating system which has at least one, but preferably at least 20, and particularly preferably 48,
  • Coating devices includes. Furthermore, the
  • Coating system at least one, preferably exactly two voltage generating devices per coating device
  • FIG. 1 the invention is illustrated in FIG.
  • Figure 1 is a simplified schematic sectional view of a
  • FIG. 1 shows a simplified schematic sectional view of a
  • Coating device 1 according to a preferred embodiment of the invention. An operating state of the coating device 1 is shown while a component 2 arranged in the coating device 1 is being coated.
  • the component 2 is a spark plug housing with a straight ground electrode 22.
  • the coating device 1 comprises a housing 3 with an outer anode 4.
  • the housing 3 extends essentially along a longitudinal axis 10.
  • the component 2 is arranged inside the outer anode 4.
  • the outer anode 4 has an inner contour which is adapted to an outer contour of the component 2.
  • An inner anode 5 of the coating device 1 is arranged within a through opening 21 of the component 2.
  • the inner anode 5 is fastened to a base 35 of the housing 3 by means of a screw 51.
  • the inner anode 5 can be adjusted along the longitudinal axis 10 by means of the screw 51.
  • the housing 3 comprises a cover 8 with a clamping device 81.
  • the grounding electrode 22 of the component 2 is in the clamping device 81
  • the ground electrode 22 is shown in FIG. 1 in a not yet bent state, and thus also extends in the direction of the longitudinal axis 10. As can also be seen in FIG. 1 by clamping the ground electrode 22 in the clamping device 81, more than 90% of the surface of the ground electrode 22 is covered by the clamping device 81 in order to prevent the ground electrode 22 from being coated on precisely this covered surface.
  • the housing 3 has an inlet 31 on the bottom 35, via which a process medium can be introduced into the housing 3 in the direction 71.
  • an outlet 32 is provided in the housing 3, via which the process medium, after it has flowed over or flowed through the component 2, can be discharged again in the direction 72 from the housing 3.
  • the coating device 1 further comprises a
  • the flow control device 9 which is arranged at the transition between the bottom 35 and the outer anode 4.
  • the flow control device 9 is designed as a perforated diaphragm with a plurality of holes 91 in order to regulate a flow, in particular a volume flow, of the process medium through the housing 3 by rotation.
  • the process medium is a nickel electrolyte, by means of which a nickel coating can consequently be produced on the component 2.
  • the coating device 1 further comprises a voltage generating device 6.
  • a first voltage can be generated between the external anode 4 and the component 2 by means of the voltage generating device 6.
  • a second voltage can also be generated between the inner anode 5 and the component 2.
  • the nickel coating can be generated both on the inside and on the outside of the component 2.

Abstract

The invention relates to a coating apparatus (1) for coating components (2), in particular for nickel plating spark-plug housings. The coating apparatus comprises: a housing (3) with an outer anode (4), which is designed to receive the component (2), an inner anode (5), which can be inserted into a through-opening (21) of the component (2), and a voltage generating device (6), wherein the voltage generating device (6) is designed to generate a first voltage between the outer anode (4) and the component (2) and also a second voltage between the inner anode (5) and the component (2), and wherein the housing (3) has an inlet (31) and an outlet (32), for introducing (71) and discharging (72) a process medium into and out of the housing (3).

Description

Beschreibung description
Titel title
Beschichtungsvorrichtung zum Beschichten von Bauteilen Coating device for coating components
Stand der Technik State of the art
Die vorliegende Erfindung betrifft eine Beschichtungsvorrichtung zum The present invention relates to a coating device for
Beschichten von Bauteilen, insbesondere zum Vernickeln von Coating of components, in particular for nickel-plating
Zündkerzengehäusen. Weiterhin betrifft die Erfindung eine Beschichtungsanlage. Spark plug housings. The invention also relates to a coating system.
Bekannt ist die Beschichtung von Bauteilen, wie Zündkerzengehäusen, mittels Trommelbeschichtung. Dabei werden die Bauteile als Schüttgut in eine Trommel eingeführt, wobei die in der Trommel befindlichen Bauteile anschließend als Schüttgut sämtliche Beschichtungsschritte durchlaufen. The coating of components, such as spark plug housings, by means of drum coating is known. The components are introduced into a drum as bulk goods, with the components in the drum then going through all coating steps as bulk goods.
Offenbarung der Erfindung Disclosure of the invention
Die erfindungsgemäße Beschichtungsvorrichtung mit den Merkmalen des Anspruchs 1 bietet demgegenüber den Vorteil einer verbesserten Vorrichtung mittels welcher qualitativ sehr hochwertige Beschichtungen von Bauteilen in kurzer Zeit erzeugt werden können. Dies wird erfindungsgemäß erreicht durch eine Beschichtungsvorrichtung, welche ein Gehäuse mit einer Außenanode, eine Innenanode und eine Spannungserzeugungseinrichtung umfasst. Die The coating device according to the invention with the features of claim 1 offers the advantage of an improved device by means of which high-quality coatings of components can be produced in a short time. This is achieved according to the invention by a coating device which comprises a housing with an outer anode, an inner anode and a voltage generating device. The
Außenanode ist somit Teil des Gehäuses und eingerichtet, das Bauteil, welches vorzugsweise ein Zündkerzengehäuse ist, aufzunehmen, das heißt, das Bauteil zu umgreifen. Die Innenanode ist in eine Durchgangsöffnung des Bauteils einführbar. Weiterhin ist die Spannungserzeugungseinrichtung eingerichtet, eine erste Spannung zwischen Außenanode und Bauteil sowie eine zweite Spannung zwischen Innenanode und Bauteil zu erzeugen. Das Gehäuse weist außerdem einen Zulauf und einen Ablauf auf. Durch den Zulauf kann ein Prozessmedium in das Gehäuse eingeleitet werden und über den Ablauf kann das Prozessmedium aus dem Gehäuse wieder ausgeleitet werden. Die Beschichtungsvorrichtung ist somit so ausgestaltet, dass diese jeweils genau ein Bauteil aufnehmen kann, wobei sowohl eine Außenseite als auch eine Innenseite des Bauteils vollständig und mit hoher Qualität beschichtet, vorteilhafterweise vernickelt, werden kann. Durch die direkte Umströmung des Bauteils mittels des Prozessmediums kann dabei eine sehr hohe The outer anode is thus part of the housing and is designed to receive the component, which is preferably a spark plug housing, that is to say to grip around the component. The inner anode can be inserted into a through opening of the component. Furthermore, the voltage generating device is set up to generate a first voltage between the outer anode and the component and a second voltage between the inner anode and the component. The housing also has an inlet and an outlet. A process medium can be introduced into the housing through the inlet and the process medium can be discharged from the housing again via the outlet. The coating device is thus designed in such a way that it can each receive exactly one component, with both an outside and an inside of the component being able to be coated, advantageously nickel-plated, completely and with high quality. Due to the direct flow around the component by means of the process medium, a very high
Beschichtungsgeschwindigkeit, das heißt eine sehr schnelle Abscheidung einer Schicht auf dem Bauteil, erreicht werden. Coating speed, i.e. a very rapid deposition of a layer on the component, can be achieved.
Die Unteransprüche haben bevorzugte Weiterbildungen der Erfindung zum Inhalt. The subclaims contain preferred developments of the invention.
Bevorzugt umfasst das Gehäuse ferner einen Deckel mit einer Spannvorrichtung. Die Spannvorrichtung ist dabei ausgebildet, das Bauteil einzuspannen, um dadurch das Bauteil in einer vordefinierten Position innerhalb der Außenanode zu halten. Das heißt, das Bauteil wird allein durch die Spannvorrichtung definiert in dem Gehäuse festgehalten. The housing preferably further comprises a cover with a clamping device. The clamping device is designed to clamp the component in order to hold the component in a predefined position within the outer anode. That is, the component is held in a defined manner in the housing by the clamping device alone.
Besonders bevorzugt ist das Bauteil ein Zündkerzengehäuse mit einer The component is particularly preferably a spark plug housing with a
Masseelektrode. Die Spannvorrichtung ist dabei eingerichtet, die Masseelektrode einzuspannen. Somit ergibt sich besonders einfache Möglichkeit einer Halterung des Zündkerzengehäuses innerhalb der Außenanode. Ground electrode. The clamping device is set up to clamp the ground electrode. This results in a particularly simple possibility of holding the spark plug housing inside the outer anode.
Vorzugsweise ist die Spannvorrichtung so ausgebildet, dass diese eine Preferably, the clamping device is designed so that this one
Oberfläche der Masseelektrode im eingespannt Zustand zumindest teilweise bedeckt. Insbesondere bedeckt die Spannvorrichtung in diesem eingespannten Zustand mindestens 80%, besonders bevorzugt mindestens 95% der Oberfläche der Masseelektrode. Das heißt, die Spannvorrichtung umgreift die Surface of the ground electrode in the clamped state at least partially covered. In particular, the clamping device covers at least 80%, particularly preferably at least 95% of the surface of the ground electrode in this clamped state. That is, the clamping device engages around the
Masseelektrode des Zündkerzengehäuses so, dass dadurch einerseits eine definierte Halterung des Zündkerzengehäuses innerhalb der Außenanode ermöglicht ist und andererseits, dass eine Oberfläche der Masseelektrode weitgehend bedeckt ist. Dadurch wird verhindert, dass die Masseelektrode beim Beschichtungsvorgang in Kontakt mit dem Prozessmedium kommen kann und somit von der Beschichtung ausgeschlossen wird. Dies ist besonders günstig, wenn nur eine Teilbeschichtung des Zündkerzengehäuses beabsichtigt ist. Weiterhin ist es vorteilhaft, wenn das Prozessmedium ein Nickelelektrolyt ist. Somit entspricht das Beschichten einem Vernickeln des Bauteils, das heißt es wird ein Nickelüberzug auf dem Bauteil erzeugt. Ground electrode of the spark plug housing in such a way that, on the one hand, this enables the spark plug housing to be held in a defined manner within the outer anode and, on the other hand, that a surface of the ground electrode is largely covered. This prevents the ground electrode from coming into contact with the process medium during the coating process and thus being excluded from the coating. This is particularly advantageous if only a partial coating of the spark plug housing is intended. It is also advantageous if the process medium is a nickel electrolyte. The coating thus corresponds to nickel-plating the component, i.e. a nickel coating is produced on the component.
Bevorzugt ist die Innenanode entlang einer Längsachse des Gehäuses verstellbar, um eine Erzeugung der Beschichtung an der Innenseite des Bauteils anzupassen. Beispielsweise kann dadurch eine unterschiedliche Schichtdicke der Beschichtung an der Innenseite des Bauteils erreicht werden. The inner anode is preferably adjustable along a longitudinal axis of the housing in order to adapt the generation of the coating on the inside of the component. For example, a different layer thickness of the coating on the inside of the component can thereby be achieved.
Vorzugsweise umfasst die Beschichtungsvorrichtung ferner eine Preferably, the coating device further comprises one
Durchflussregelungseinrichtung, um einen Durchfluss des Prozessmediums durch das Gehäuse zu regeln. Dabei ist die Durchflussregelungseinrichtung eine Lochblende, welche bevorzugt drehbar ist. Beispielsweise kann eine solche drehbare Lochblende als zwei gegeneinander verdrehbare Scheiben mit mehreren Durchgangslöchern vorgesehen sein. Durch Verdrehen der beiden Scheiben gegeneinander ändert sich eine Überdeckung der Durchgangslöcher, wodurch ein gesamter freier Durchflussquerschnitt, und somit einen Durchfluss durch das Gehäuse, eingestellt werden kann. Flow regulating device to regulate a flow of the process medium through the housing. The flow control device is a perforated diaphragm, which is preferably rotatable. For example, such a rotatable perforated diaphragm can be provided as two disks which can be rotated relative to one another and have several through holes. By turning the two disks against each other, an overlap of the through holes changes, whereby a total free flow cross section, and thus a flow through the housing, can be set.
Besonders bevorzugt kann mittels der Durchflussregelungseinrichtung jeweils ein erster Durchfluss zwischen Innenanode und/oder ein zweiter Durchfluss zwischen Außenanode und Bauteil geregelt werden. Besonders günstig ist es dabei, wenn der erste Durchfluss und der zweite Durchfluss mittels der Particularly preferably, a first flow between the inner anode and / or a second flow between the outer anode and the component can be regulated by means of the flow control device. It is particularly favorable if the first flow and the second flow by means of the
Durchflussregelungseinrichtung voneinander unabhängig geregelt werden können, um den Durchfluss des Prozessmediums durch das Gehäuse besonders flexibel an die gewünschten Eigenschaften der Beschichtung innen sowie außen am Bauteil anpassen zu können. Flow regulating device can be regulated independently of one another in order to be able to adapt the flow of the process medium through the housing particularly flexibly to the desired properties of the coating inside and outside of the component.
Weiterhin führt die Erfindung zu einer Beschichtungsanlage, die zumindest eine, vorzugsweise allerdings mindestens 20, und besonders bevorzugt 48, Furthermore, the invention leads to a coating system which has at least one, but preferably at least 20, and particularly preferably 48,
Beschichtungsvorrichtungen umfasst. Weiterhin umfasst die Coating devices includes. Furthermore, the
Beschichtungsanlage dabei pro Beschichtungsvorrichtung mindestens eine, bevorzugt genau zwei Spannungserzeugungseinrichtungen pro Coating system at least one, preferably exactly two voltage generating devices per coating device
Beschichtungsvorrichtung. Somit kann eine besonders effiziente und schnelle Beschichtung der Bauteile in einer Gesamtanlage erzielt werden. Kurze Beschreibung der Zeichnung Coating device. A particularly efficient and fast coating of the components in an overall system can thus be achieved. Brief description of the drawing
Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels in In the following, the invention is illustrated in FIG
Verbindung mit der Figur beschrieben. In der Figur sind funktional gleiche Bauteile jeweils mit gleichen Bezugszeichen gekennzeichnet. Dabei zeigt: Connection described with the figure. In the figure, functionally identical components are identified by the same reference numerals. It shows:
Figur 1 eine vereinfachte schematische Schnittansicht einer Figure 1 is a simplified schematic sectional view of a
Beschichtungsvorrichtung gemäß einem bevorzugten Ausführungsbeispiel der Erfindung. Coating device according to a preferred embodiment of the invention.
Bevorzugte Ausführungsform der Erfindung Preferred embodiment of the invention
Die Figur 1 zeigt eine vereinfachte schematische Schnittansicht einer FIG. 1 shows a simplified schematic sectional view of a
Beschichtungsvorrichtung 1 gemäß einem bevorzugten Ausführungsbeispiel der Erfindung. Gezeigt ist dabei ein Betriebszustand der Beschichtungsvorrichtung 1 während ein in der Beschichtungsvorrichtung 1 angeordnetes Bauteil 2 beschichtet wird. Bei dem Bauteil 2 handelt es sich um ein Zündkerzengehäuse mit einer geraden Masseelektrode 22. Coating device 1 according to a preferred embodiment of the invention. An operating state of the coating device 1 is shown while a component 2 arranged in the coating device 1 is being coated. The component 2 is a spark plug housing with a straight ground electrode 22.
Die Beschichtungsvorrichtung 1 umfasst ein Gehäuse 3 mit einer Außenanode 4. Das Gehäuse 3 erstreckt sich im Wesentlichen entlang einer Längsachse 10. Innerhalb der Außenanode 4 ist das Bauteil 2 angeordnet. Die Außenanode 4 weist eine Innenkontur auf, welche an eine Außenkontur des Bauteils 2 angepasst ist. The coating device 1 comprises a housing 3 with an outer anode 4. The housing 3 extends essentially along a longitudinal axis 10. The component 2 is arranged inside the outer anode 4. The outer anode 4 has an inner contour which is adapted to an outer contour of the component 2.
Innerhalb einer Durchgangsöffnung 21 des Bauteils 2 ist eine Innenanode 5 der Beschichtungsvorrichtung 1 angeordnet. Die Innenanode 5 ist mittels einer Schraube 51 an einem Boden 35 des Gehäuses 3 befestigt. Mittels der Schraube 51 kann eine Verstellung der Innenanode 5 entlang der Längsachse 10 vorgenommen werden. An inner anode 5 of the coating device 1 is arranged within a through opening 21 of the component 2. The inner anode 5 is fastened to a base 35 of the housing 3 by means of a screw 51. The inner anode 5 can be adjusted along the longitudinal axis 10 by means of the screw 51.
Weiterhin umfasst das Gehäuse 3 einen Deckel 8 mit einer Spannvorrichtung 81. In der Spannvorrichtung 81 ist die Masseelektrode 22 des Bauteils 2 Furthermore, the housing 3 comprises a cover 8 with a clamping device 81. The grounding electrode 22 of the component 2 is in the clamping device 81
eingespannt, um somit das Bauteil 2 in einer definierten Position innerhalb der Außenanode 4 zu halten. Die Masseelektrode 22 ist dabei in der Figur 1 in einem noch nicht umgebogenen Zustand dargestellt, und erstreckt sich somit ebenfalls in Richtung der Längsachse 10. Wie in der Figur 1 ebenfalls zu erkennen, ist durch die Einspannung der Masseelektrode 22 in der Spannvorrichtung 81 mehr als 90% der Oberfläche der Masseelektrode 22 durch die Spannvorrichtung 81 abgedeckt, um eine Beschichtung der Masseelektrode 22 an genau dieser bedeckten Oberfläche zu verhindern. clamped in order to hold the component 2 in a defined position within the outer anode 4. The ground electrode 22 is shown in FIG. 1 in a not yet bent state, and thus also extends in the direction of the longitudinal axis 10. As can also be seen in FIG. 1 by clamping the ground electrode 22 in the clamping device 81, more than 90% of the surface of the ground electrode 22 is covered by the clamping device 81 in order to prevent the ground electrode 22 from being coated on precisely this covered surface.
Weiterhin weist das Gehäuse 3 am Boden 35 einen Zulauf 31 auf, über welchen ein Prozessmedium in das Gehäuse 3 in Richtung 71 eingeleitet werden kann. Außerdem ist im Gehäuse 3 einen Ablauf 32 vorgesehen, über welchen das Prozessmedium, nachdem es das Bauteil 2 überströmt bzw. durchströmt hat, wieder in Richtung 72 aus dem Gehäuse 3 ausgeleitet werden kann. Furthermore, the housing 3 has an inlet 31 on the bottom 35, via which a process medium can be introduced into the housing 3 in the direction 71. In addition, an outlet 32 is provided in the housing 3, via which the process medium, after it has flowed over or flowed through the component 2, can be discharged again in the direction 72 from the housing 3.
Die Beschichtungsvorrichtung 1 umfasst weiterhin eine The coating device 1 further comprises a
Durchflussregelungseinrichtung 9, welche am Übergang zwischen dem Boden 35 und der Außenanode 4 angeordnet ist. Die Durchflussregelungseinrichtung 9 ist als Lochblende mit mehreren Löchern 91 ausgebildet, um durch Verdrehen einen Durchfluss, insbesondere einen Volumenstrom, des Prozessmediums durch das Gehäuse 3 zu regeln. Flow control device 9, which is arranged at the transition between the bottom 35 and the outer anode 4. The flow control device 9 is designed as a perforated diaphragm with a plurality of holes 91 in order to regulate a flow, in particular a volume flow, of the process medium through the housing 3 by rotation.
Bei dem Prozessmedium handelt es sich dabei um einen Nickelelektrolyten, mittels dessen folglich ein Nickelüberzug auf dem Bauteil 2 erzeugt werden kann. The process medium is a nickel electrolyte, by means of which a nickel coating can consequently be produced on the component 2.
Um einen solchen Nickelüberzug auf dem Bauteil 2 zu erzeugen, umfasst die Beschichtungsvorrichtung 1 ferner eine Spannungserzeugungseinrichtung 6. Mittels der Spannungserzeugungseinrichtung 6 kann eine erste Spannung zwischen der Außenanode 4 und dem Bauteil 2 erzeugt werden. Zudem kann auch zwischen der Innenanode 5 und dem Bauteil 2 eine zweite Spannung erzeugt werden. Somit kann durch Anlegen der ersten Spannung und der zweiten Spannung während das Gehäuse 3 von dem Prozessmedium In order to generate such a nickel coating on the component 2, the coating device 1 further comprises a voltage generating device 6. A first voltage can be generated between the external anode 4 and the component 2 by means of the voltage generating device 6. In addition, a second voltage can also be generated between the inner anode 5 and the component 2. Thus, by applying the first voltage and the second voltage while the housing 3 is removed from the process medium
durchströmt wird, der Nickelüberzug sowohl an der Innenseite als auch an der Außenseite des Bauteils 2 erzeugt werden. is flowed through, the nickel coating can be generated both on the inside and on the outside of the component 2.

Claims

Ansprüche Expectations
1. Beschichtungsvorrichtung zum Beschichten von Bauteilen (2), insbesondere zum Vernickeln von Zündkerzengehäusen, umfassend: 1. Coating device for coating components (2), in particular for nickel-plating spark plug housings, comprising:
- ein Gehäuse (3) mit einer Außenanode (4), welche eingerichtet ist, das Bauteil (2) aufzunehmen, - A housing (3) with an outer anode (4) which is set up to accommodate the component (2),
- eine Innenanode (5), welche in eine Durchgangsöffnung (21) des Bauteils (2) einführbar ist, und - An inner anode (5) which can be introduced into a through opening (21) of the component (2), and
- eine Spannungserzeugungseinrichtung (6), - a voltage generating device (6),
- wobei die Spannungserzeugungseinrichtung (6) eingerichtet ist, eine erste Spannung zwischen Außenanode (4) und Bauteil (2) sowie eine zweite - wherein the voltage generating device (6) is set up, a first voltage between the outer anode (4) and component (2) and a second
Spannung zwischen Innenanode (5) und Bauteil (2) zu erzeugen, und To generate voltage between inner anode (5) and component (2), and
- wobei das Gehäuse (3) einen Zulauf (31) zum Einleiten (71) eines - The housing (3) has an inlet (31) for introducing (71) a
Prozessmediums in das Gehäuse (3) und einen Ablauf (32) zum Ausleiten (72) des Prozessmediums aus dem Gehäuse (3) aufweist. Process medium in the housing (3) and a drain (32) for discharging (72) the process medium from the housing (3).
2. Beschichtungsvorrichtung nach Anspruch 1 , wobei das Gehäuse (3) ferner einen Deckel (8) mit einer Spannvorrichtung (81) umfasst, wobei die Spannvorrichtung (81) ausgebildet ist, das Bauteil (2) einzuspannen, zum Halten des Bauteils (2) in einer vordefinierten Position innerhalb der Außenanode (4). 2. Coating device according to claim 1, wherein the housing (3) further comprises a cover (8) with a clamping device (81), wherein the clamping device (81) is designed to clamp the component (2) for holding the component (2) in a predefined position within the outer anode (4).
3. Beschichtungsvorrichtung nach Anspruch 2, wobei das Bauteil (2) ein 3. Coating device according to claim 2, wherein the component (2) is a
Zündkerzengehäuse mit einer Masseelektrode (22) ist, und wobei die Spark plug housing with a ground electrode (22), and wherein the
Spannvorrichtung (81) eingerichtet ist, die Masseelektrode (22) einzuspannen. Clamping device (81) is set up to clamp the ground electrode (22).
4. Beschichtungsvorrichtung nach Anspruch 3, wobei die Spannvorrichtung (81) eine Oberfläche der Masseelektrode (22) im eingespannten Zustand zumindest teilweise bedeckt, und wobei die Spannvorrichtung (81) insbesondere mindestens 80%, besonders bevorzugt mindestens 95%, der Oberfläche der Masseelektrode (22) im eingespannten Zustand bedeckt. 4. Coating device according to claim 3, wherein the clamping device (81) at least partially covers a surface of the ground electrode (22) in the clamped state, and wherein the clamping device (81) in particular at least 80%, particularly preferably at least 95%, of the surface of the ground electrode ( 22) covered in the clamped state.
5. Beschichtungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei das Prozessmedium ein Nickelelektrolyt ist. 5. Coating device according to one of the preceding claims, wherein the process medium is a nickel electrolyte.
6. Beschichtungsvorrichtung nach einem der vorhergehenden Ansprüche, wobei die Innenanode (5) entlang einer Längsachse (10) des Gehäuses (3) verstellbar ist. 6. Coating device according to one of the preceding claims, wherein the inner anode (5) is adjustable along a longitudinal axis (10) of the housing (3).
7. Beschichtungsvorrichtung nach einem der vorhergehenden Ansprüche, ferner umfassend eine Durchflussregelungseinrichtung (9), zum Regeln des 7. Coating device according to one of the preceding claims, further comprising a flow control device (9) for controlling the
Durchflusses des Prozessmediums durch das Gehäuse (3), wobei die Flow of the process medium through the housing (3), the
Durchflussregelungseinrichtung (9) eine, insbesondere drehbare, Lochblende ist. The flow control device (9) is an, in particular rotatable, perforated screen.
8. Beschichtungsvorrichtung nach Anspruch 7, wobei die 8. Coating device according to claim 7, wherein the
Durchflussregelungseinrichtung (9) eingerichtet ist, jeweils einen ersten Flow regulating device (9) is set up, in each case a first
Durchfluss zwischen Innenanode (5) und Bauteil (2) und/oder einen zweiten Durchfluss zwischen Außenanode (4) und Bauteil (2), insbesondere unabhängig voneinander, zu regeln. To regulate the flow between the inner anode (5) and the component (2) and / or a second flow between the outer anode (4) and the component (2), in particular independently of one another.
9. Beschichtungsanlage, umfassend: 9. Coating plant, comprising:
zumindest eine, insbesondere mindestens 20, bevorzugt 48, at least one, in particular at least 20, preferably 48,
Beschichtungsvorrichtung(en) (1) nach einem der vorhergehenden Coating device (s) (1) according to one of the preceding
Ansprüche, und Claims, and
zumindest eine, insbesondere zwei, Spannungserzeugungseinrichtung(en) (6) je Beschichtungsvorrichtung (1). at least one, in particular two, voltage generating device (s) (6) per coating device (1).
EP20712342.3A 2019-04-01 2020-03-18 Coating apparatus for coating components Pending EP3947784A1 (en)

Applications Claiming Priority (2)

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DE102019204553.7A DE102019204553A1 (en) 2019-04-01 2019-04-01 Coating device for coating components
PCT/EP2020/057461 WO2020200789A1 (en) 2019-04-01 2020-03-18 Coating apparatus for coating components

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EP3947784A1 true EP3947784A1 (en) 2022-02-09

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US (1) US20220220626A1 (en)
EP (1) EP3947784A1 (en)
JP (1) JP7279191B2 (en)
CN (1) CN113614291A (en)
BR (1) BR112021019420A2 (en)
DE (1) DE102019204553A1 (en)
WO (1) WO2020200789A1 (en)

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US20220220626A1 (en) 2022-07-14
DE102019204553A1 (en) 2020-10-01
JP7279191B2 (en) 2023-05-22
JP2022526777A (en) 2022-05-26
WO2020200789A1 (en) 2020-10-08
BR112021019420A2 (en) 2021-11-30
CN113614291A (en) 2021-11-05

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