EP0240651A1 - Process and device for applying liquid anticorrosive agents to corrosion-susceptible parts of packing vessels or parts thereof - Google Patents

Process and device for applying liquid anticorrosive agents to corrosion-susceptible parts of packing vessels or parts thereof Download PDF

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Publication number
EP0240651A1
EP0240651A1 EP87100533A EP87100533A EP0240651A1 EP 0240651 A1 EP0240651 A1 EP 0240651A1 EP 87100533 A EP87100533 A EP 87100533A EP 87100533 A EP87100533 A EP 87100533A EP 0240651 A1 EP0240651 A1 EP 0240651A1
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EP
European Patent Office
Prior art keywords
container
corrosion
parts
container parts
areas
Prior art date
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Granted
Application number
EP87100533A
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German (de)
French (fr)
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EP0240651B1 (en
Inventor
Georg Dr. Dipl.-Chem. Bolte
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.)
Ardagh Metal Packaging Germany GmbH
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Schmalback Lubeca AG
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Priority to AT87100533T priority Critical patent/ATE51164T1/en
Publication of EP0240651A1 publication Critical patent/EP0240651A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B05B12/122—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to presence or shape of target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2701/00—Coatings being able to withstand changes in the shape of the substrate or to withstand welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49986—Subsequent to metal working

Definitions

  • the invention relates to a method and a device for applying liquid anticorrosive agents, in particular paint, to areas of packaging containers or container parts made of metal which are at risk of corrosion and which, after painting the container or container parts, are subjected to processing operations such as cutting, scoring, welding, shaping or the like. , have arisen as a result of local damage or removal of the paint.
  • lacquers In order to largely avoid damage to the all-round painted container or container parts during subsequent deformation or processing, lacquers have been used so far that they have been adjusted so that they have both a high toughness and, as a result, a large degree of expansion and sufficient mechanical strength.
  • paints are relatively expensive and often difficult to adjust in terms of the properties required.
  • lacquers of different compositions are necessary. Nevertheless, when using these paints, corrosion-prone areas always occur when cutting or stamping operations on the containers or container parts have to be carried out after they have been painted. This creates cut edges that can never be covered by the coating previously applied to the container or container parts.
  • the invention has for its object to develop the method of the type mentioned so that a precise and material-saving coating or painting the local damage to the container or container parts can be done with the same anti-corrosion agent as the previous all-round coating.
  • the solution to the above problem is that the areas at risk of corrosion on the containers or container parts are applied by the ink-jet method by program-controlled, punctiform application of the anti-corrosion agent to form a film-like application.
  • the ink-jet method can be used to apply targeted coatings that cover only the areas of the damage, regardless of the geometry of the container or container parts or their local damage. It is possible to limit the coatings only to narrow areas, such as scratched edges or cutting lines, without the need for an immersion treatment or a heat treatment, such as, for example, when melting electrostatically applied powder.
  • the locally restricted areas can be coated both with locally fixed or held containers or container parts and also during the movement or during the transport of the containers or container parts. Due to the targeted and metered application of the corrosion protection agent according to the ink-jet method, an extremely short period of time is required for the application of the corrosion protection agent to the areas which are generally very localized, whereby the layer thickness to be applied can be varied.
  • the surface application can be achieved by partially covering all adjacent points of the applied anticorrosive agent or without overlapping by the liquid flowing into adjacent points without excess material having to be applied to the areas to be covered and removed again.
  • the aforementioned measures make it possible to align all the containers or container parts before the punctiform application of the corrosion protection agents in such a way that the similar damage to the containers or container parts resulting from the previous processing is in the same place when passing through the spray nozzle arrangement, which makes it particularly simple Control of the spray nozzle arrangement results.
  • a particularly useful device for this is characterized in that in the course of a conveying path of the container or container parts, a stationary nozzle arrangement is provided in connection with an upstream device for aligning and / or fixing the container or container parts on the conveyor, around the container ter or container parts on the conveyor in a respective matching position with respect to the nozzle arrangement and / or to keep.
  • the above-mentioned device can be designed in a simple manner as an additional station of a processing machine, in that the parts machined on the machine, while maintaining their relative position with respect to a holding device, are transferred to the coating station downstream of the processing stations, in which the damaged nozzle arrangement is used by means of the fixed nozzle arrangement or areas free of corrosion protection agents.
  • the nozzle arrangement can be adapted in a particularly simple manner to the geometric shape of the respective corrosion-prone area of the container or the container part. In addition to a simple nozzle arrangement, this also achieves very simple control of this nozzle arrangement, in order to achieve the coating of the damaged areas, in particular when the container or container part is held stationary.
  • the device in such a way that an optical path along the conveying path of the containers or container parts or electronic scanning device for ascertaining the position of the containers or container parts and the areas at risk of corrosion present thereon, and a device for converting the scanning signals or the captured image in pixels and control signals derived therefrom and a block-shaped arrangement of spray nozzles dimensioned larger than the respective area at risk of corrosion is provided in connection with a program control device for the spray nozzles which can be actuated as a function of the control signals.
  • a camera can be used for this, for example in the manner of a video camera, by means of which the captured image is already broken down into pixels which are to be converted into control signals in a known manner in order to actuate the program control device for the spray nozzles.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Packages (AREA)
  • Paints Or Removers (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Revetment (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

At least one complete surface of at least one metallic part of a can is given a uniform coating of corrosion-preventing lacquer and this part is subsequently worked such that the metal of the part is exposed at regions at least immediately adjacent the coated surface. Dots of lacquer are sprayed by the ink-jet method substantially only on the exposed regions of the part after working thereof and so that the dots together form a continuous layer covering the exposed regions. According to the viscosity of the lacquer the surface coating can be achieved by partially overlapping adjacent dots of the applied lacquer or without overlapping by the running together of the adjacent dots of the liquid, with no excess material having to be applied to and subsequently removed from the regions to be coated.

Description

Die Erfindung betrifft ein Verfahren und eine Vor­richtung zum Auftragen von flüssigen Korrosionsschutz­mitteln, insbesondre Lack, auf korrosionsgefährdete Bereiche von Verpackungsbehältern oder -behälterteilen aus Metall, die nach der Lackierung der Behälter oder Behälterteile durch Bearbeitungsvorgänge, wie Schneiden, Ritzen, Schweißen, Verformen oder dgl., infolge ört­licher Beschädigungen oder Beseitigungen der Lackierung entstanden sind.The invention relates to a method and a device for applying liquid anticorrosive agents, in particular paint, to areas of packaging containers or container parts made of metal which are at risk of corrosion and which, after painting the container or container parts, are subjected to processing operations such as cutting, scoring, welding, shaping or the like. , have arisen as a result of local damage or removal of the paint.

Bei der Herstellung von Verpackungsbehältern oder -behälterteilen, wie Verschlußdeckel oder dgl., ist es bekannt, die Behälter bzw. Behälterteile durch eine Rundumlackierung mit einer Korrosionsschutzschicht zu versehen, ehe die Behälter bzw. Behälterteile einer weiteren Bearbeitung unterworfen werden. Diese nach­trägliche Bearbeitung, welche in einer Verformung oder in der Einbringung von Ritzlinien, von Schweiß­nähten oder in der Anbringung von Ausstanzungen be­stehen können, werden deshalb nach der Lackierung der Behälter oder Behälterteile vorgenommen, weil eine nachträgliche Lackierung mit Hilfe von Spritzdüsen wegen der komplizierten Geometrie oftmals sehr schwierig ist und sehr aufwendige Einrichtungen erfordert. Zudem bereitet es Schwierigkeiten, die fertig geformten und bearbeiteten Behälter bzw. Behälterteile mit einer gleichmäßig deckenden Korrosionsschutzschicht zu ver­sehen.In the manufacture of packaging containers or container parts, such as sealing lids or the like, it is known to provide the containers or container parts with a corrosion protection layer by means of a complete coating before the containers or container parts are subjected to further processing. This subsequent processing, which can consist of deformation or the creation of scoring lines, weld seams or the punching out, is therefore carried out after painting the container or container parts made because a subsequent painting with the help of spray nozzles is often very difficult because of the complicated geometry and requires very expensive equipment. In addition, it is difficult to provide the fully formed and processed containers or container parts with an evenly covering corrosion protection layer.

Um Beschädigungen der rundum lackierten Behälter bzw. Behälterteile bei der nachträglichen Verformung bzw. Bearbeitung weitgehend zu vermeiden, hat man bisher Lacke verwendet, die so eingestellt wurden, daß sie sowohl eine große Zähigkeit und damit einhergehend ein großes Dehnungsvermögen als auch hinreichende mechanische Festigkeiten aufweisen. Derartige Lacke sind jedoch relativ teuer und oftmals schwer hinsicht­lich der geforderten Eigenschaften einzustellen. Je nach Art des Verformungsgrades bzw. des Bearbeitungsvor­ganges, dem die bereits lackierten Behälter oder Be­hälterteile unterworfen werden, sind Lacke unterschie­dlicher Zusammensetzungen notwendig. Trotzdem treten bei Verwendung dieser Lacke stets dann korrosions­gefährdete Stellen auf, wenn Schneid- oder Stanzbe­arbeitungen an den Behältern oder Behälterteilen nach deren Lackierung vorgenommen werden müssen. Hierbei entstehen Schnittkanten, die in keinem Falle von der zuvor auf die Behälter oder Behälterteile aufgebrachten Beschichtung abgedeckt werden können.In order to largely avoid damage to the all-round painted container or container parts during subsequent deformation or processing, lacquers have been used so far that they have been adjusted so that they have both a high toughness and, as a result, a large degree of expansion and sufficient mechanical strength. However, such paints are relatively expensive and often difficult to adjust in terms of the properties required. Depending on the type of degree of deformation or the processing operation to which the already painted containers or container parts are subjected, lacquers of different compositions are necessary. Nevertheless, when using these paints, corrosion-prone areas always occur when cutting or stamping operations on the containers or container parts have to be carried out after they have been painted. This creates cut edges that can never be covered by the coating previously applied to the container or container parts.

Um die vorgenannten Nachteile und Schwierigkeiten zu vermeiden, sind einleitend genannte Verfahren be­kanntgeworden, um die durch Bearbeitungsvorgänge ent­standenen örtlichen Beschädigungen oder Beseitigungen der Lackierung der Verpackungsbehälter bzw. der -be­hälterteile durch einen erneuten Auftrag von Lack gegen die Gefahr von Korrosionen zu schützen. Zum Zwecke eines derartigen erneuten Lackauftrages ist es bekanntgeworden, die Behälter bzw. Behälterteile einer Elektro-Tauchlackierung zu unterwerfen, wobei zumindest der korrosionsgefährdete Bereich der Behälter oder Behälterteile durch das Tauchbad hindurchbewegt wurde.In order to avoid the aforementioned disadvantages and difficulties, the methods mentioned at the outset have become known for the local damage or removal of the coating of the packaging containers or of the container parts caused by processing operations by a renewed application of lacquer protect against the risk of corrosion. For the purpose of such a renewed application of paint, it has become known to subject the containers or container parts to an electro-dip coating, at least the area of the containers or container parts which is at risk of corrosion being moved through the immersion bath.

Bei anderen Verfahren hat man die korrosionsgefährdeten Stellen auf elektrostatischem Wege mit einer Pulver­beschichtung versehen und den Korrosionsschutz an diesen Stellen durch Niederschmelzen des Pulvers her­gestellt.In other processes, the areas at risk of corrosion have been electrostatically provided with a powder coating and the corrosion protection at these points has been produced by melting the powder.

Die beiden vorgenannten Verfahren sind relativ aufwendig und erfordern eine große Apparatur für ihre Durchführung der insbesondere bei nur örtlich geringfügigen Be­schädigungen, wie beispielsweise an Schnitt- oder Stanzkanten, unwirtschaftlich ist. Außerdem ist es bei beiden Verfahren erforderlich, die Lacke für die Rundumbeschichtung einerseits und für die nachträgliche Aufbringung der Beschichtung an den beschädigten Stellen andererseits aufeinander abzustimmen.The two aforementioned methods are relatively complex and require a large apparatus for their implementation, which is uneconomical in particular with only minor damage, such as on cut or punched edges. In addition, with both methods it is necessary to match the lacquers for the all-round coating on the one hand and for the subsequent application of the coating on the damaged areas on the other hand.

Der Erfindung liegt die Aufgabe zugrunde, das Verfahren der einleitend genannten Art so weiterzubilden, daß eine präzise sowie materialsparende Beschichtung bzw. Lackierung der örtlichen Beschädigungen der Behälter oder Behälterteile mit dem gleichen Korrosionsschutz­mittel erfolgen kann wie auch die vorherige Rundum­beschichtung.The invention has for its object to develop the method of the type mentioned so that a precise and material-saving coating or painting the local damage to the container or container parts can be done with the same anti-corrosion agent as the previous all-round coating.

Die Lösung vorstehender Aufgabe besteht darin, daß die an den Behältern oder Behälterteilen entstandenen korrosionsgefährdeten Bereiche nach der Ink-Jet-Methode durch programmgesteuertes, punktförmiges Aufbringen des Korrosionsschutzmittels zur Bildung eines film­artigen Auftrages beschichtet werden.The solution to the above problem is that the areas at risk of corrosion on the containers or container parts are applied by the ink-jet method by program-controlled, punctiform application of the anti-corrosion agent to form a film-like application.

Durch die Ink-Jet-Methode können unabhängig von der Geometrie der Behälter oder Behälterteile bzw. ihrer örtlichen Beschädigungen gezielte und allein die Be­reiche der Beschädigungen überdeckende Beschichtungen vorgenommen werden. Dabei ist es möglich, die Beschich­tungen nur auf schmale Bereiche, wie Ritzkanten oder Schnittlinien, zu begrenzen, ohne daß eine Tauchbe­handlung oder aber eine Wärmebehandlung, wie beispiels­weise beim Niederschmelzen von elektrostatisch auf­gebrachtem Pulver, erforderlich ist. Dabei kann die Beschichtung der örtlich begrenzten Bereiche sowohl bei örtlich feststehenden bzw. festgehaltenen Behältern bzw. Behälterteilen als auch während der Bewegung bzw. während des Transportes der Behälter oder Be­hälterteile erfolgen. Durch das gezielte und dosierte Aufbringen des Korrosionsschutzmittels nach der Ink-­Jet-Methode wird für den Auftrag des Korrosionsschutz­mittels auf die in der Regel örtlich sehr begrenzten Bereiche nur eine äußerst kurze Zeitspanne benötigt, wobei die dabei aufzubringende Schichtdicke variiert werden kann. Je nach Viskosität des Korrosionsschutz­mittels kann der flächige Auftrag durch die teilweise Überdeckung aller benachbarten Punkte des aufgebrachten Korrosionsschutzmittels oder ohne Überdeckung durch das Ineinanderfließen der Flüssigkeit benachbarter Punkte erreicht werden, ohne daß überschüssiges Material auf die abzudeckenden Bereiche aufgebracht und wieder entfernt werden muß.The ink-jet method can be used to apply targeted coatings that cover only the areas of the damage, regardless of the geometry of the container or container parts or their local damage. It is possible to limit the coatings only to narrow areas, such as scratched edges or cutting lines, without the need for an immersion treatment or a heat treatment, such as, for example, when melting electrostatically applied powder. The locally restricted areas can be coated both with locally fixed or held containers or container parts and also during the movement or during the transport of the containers or container parts. Due to the targeted and metered application of the corrosion protection agent according to the ink-jet method, an extremely short period of time is required for the application of the corrosion protection agent to the areas which are generally very localized, whereby the layer thickness to be applied can be varied. Depending on the viscosity of the anticorrosive agent, the surface application can be achieved by partially covering all adjacent points of the applied anticorrosive agent or without overlapping by the liquid flowing into adjacent points without excess material having to be applied to the areas to be covered and removed again.

Um eine gezielte sowie sichere Beschichtung der örtlich begrenzten nachzubehandelnden Stellen der Behälter oder Behälterteile zu gewährleisten, ist es zweckmäßig, wenn die an den Behältern oder Behälterteilen entstan­ denen korrosionsgefährdeten Bereiche optisch bzw. elektrisch oder elektronisch abgetastet werden, und wenn die Abtastsignale in Steuersignale zur Lagesteu­erung der Behälter oder Behälterteile in bezug auf eine Spritzdüsenanordnung und/oder zur Programmsteuerung für eine Spritzdüsenanordnung zum Aufbringen der Punkte des Korrosionsschutzmittels auf die korrosionsgefähr­deten Bereiche umgewandelt werden.In order to ensure a targeted and safe coating of the locally limited post-treatment areas of the containers or container parts, it is expedient if they occur on the containers or container parts which areas at risk of corrosion are optically or electrically or electronically scanned, and when the scanning signals are converted into control signals for position control of the containers or container parts in relation to a spray nozzle arrangement and / or for program control for a spray nozzle arrangement for applying the points of the corrosion protection agent to the areas at risk of corrosion.

Durch die vorgenannten Maßnahmen ist es möglich, alle Behälter bzw. Behälterteile vor dem punktförmigen Aufbringen der Korrosionsschutzmittel so auszurichten, daß die bei der vorhergehenden Bearbeitung entstandenen gleichartigen Beschädigungen der Behälter oder Be­hälterteile beim Passieren der Spritzdüsenanordnung an der gleichen Stelle liegen, wodurch sich eine be­sonders einfache Steuerung der Spritzdüsenanordnung ergibt. Auf der anderen Seite ist es jedoch auch mög­lich, die Spritzdüsen einer entsprechenden Spritz­düsenanordnung in Abhängigkeit von der jeweiligen unterschiedlichen Lage der Beschädigungen an dem Be­hälter bzw. Behälterteil so zu steuern, daß die aus den Düsen austretenden Spritzstrahlen nur auf die beschädigten Bereiche bei der obengenannten jeweils teilweisen Überdeckung aller benachbarten Punkte auf­treffen.The aforementioned measures make it possible to align all the containers or container parts before the punctiform application of the corrosion protection agents in such a way that the similar damage to the containers or container parts resulting from the previous processing is in the same place when passing through the spray nozzle arrangement, which makes it particularly simple Control of the spray nozzle arrangement results. On the other hand, however, it is also possible to control the spray nozzles of a corresponding spray nozzle arrangement depending on the respective different location of the damage to the container or container part such that the spray jets emerging from the nozzles only onto the damaged areas in the case of the above partial coverage of all neighboring points.

Zweckmäßigerweise erfolgt die Beschichtung der be­schädigten Bereiche der Behälter oder Behälterteile während der Förderung dieser Teile. Eine hierzu be­sonders zweckmäßige Vorrichtung kennzeichnet sich dadurch, daß im Zuge eines Förderweges der Behälter oder Behälterteile eine ortsfeste Düsenanordnung in Verbindung mit einer vorgeordneten Einrichtung zum Ausrichten und/oder Fixieren der Behälter oder Behälter­teile auf dem Förderer vorgesehen ist, um die Behäl­ ter oder Behälterteile auf dem Förderer in eine jeweils übereinstimmende Lage in bezug auf die Düsenanordnung zu überführen und/oder zu halten.The damaged areas of the containers or container parts are expediently coated while these parts are being conveyed. A particularly useful device for this is characterized in that in the course of a conveying path of the container or container parts, a stationary nozzle arrangement is provided in connection with an upstream device for aligning and / or fixing the container or container parts on the conveyor, around the container ter or container parts on the conveyor in a respective matching position with respect to the nozzle arrangement and / or to keep.

Die vorstehend genannte Vorrichtung kann in einfacher Weise als zusätzliche Station einer Bearbeitungsmaschine ausgebildet sein, indem die auf der Maschine bear­beiteten Teile unter Beibehaltung ihrer relativen Lage in bezug auf eine Halteeinrichtung in die den Bearbeitungsstationen nachgeordnete Beschichtungsstation überführt werden, in welcher mittels der feststehenden Düsenanordnung die beschädigten oder von Korrosions­schutzmitteln freien Bereiche beschichtet werden. Wenn die Behälter oder Behälterteile eine jeweils übereinstimmende Lage in bezug auf die Düsenanordnung aufweisen bzw. in eine solche Lage überführt werden, kann die Düsenanordnung in besonders einfacher Weise der geometrischen Form des jeweilig korrosionsgefähr­deten Bereiches des Behälters oder des Behälterteiles angepaßt sein. Neben einer einfachen Düsenanordnung wird hierdurch auch eine sehr einfache Steuerung dieser Düsenanordnung erreicht, um insbesondere bei ortsfest gehaltenem Behälter oder Behälterteil die Beschichtung der beschädigten Bereiche zu erzielen.The above-mentioned device can be designed in a simple manner as an additional station of a processing machine, in that the parts machined on the machine, while maintaining their relative position with respect to a holding device, are transferred to the coating station downstream of the processing stations, in which the damaged nozzle arrangement is used by means of the fixed nozzle arrangement or areas free of corrosion protection agents. If the container or container parts have a corresponding position with respect to the nozzle arrangement or are transferred into such a position, the nozzle arrangement can be adapted in a particularly simple manner to the geometric shape of the respective corrosion-prone area of the container or the container part. In addition to a simple nozzle arrangement, this also achieves very simple control of this nozzle arrangement, in order to achieve the coating of the damaged areas, in particular when the container or container part is held stationary.

Wenn ohne eine vorherige Ausrichtung der Behälter oder Behälterteile deren beschädigten oder von Kor­rosionsschutzmitteln freien Bereiche mittels der Düsen­anordnung nach dem Ink-Jet-Verfahren beschichtet werden sollen, empfiehlt es sich, die Vorrichtung so auszu­bilden, daß im Zuge eines Förderweges der Behälter oder Behälterteile eine optische oder elektronische Abtasteinrichtung zur Feststellung der Lage der Behälter oder Behälterteile und der an diesen vorhandenen korro­sionsgefährdeten Bereiche sowie eine Einrichtung zur Umwandlung der Abtastsignale oder des erfaßten Bildes in Bildpunkte und hiervon abgeleitete Steuersignale und eine größer als der jeweilige korrosionsgefährdete Bereich bemessene blockförmige Anordnung von Spritzdüsen vorgesehen ist in Verbindung mit einer in Abhängigkeit von den Steuersignalen betätigbaren Programmsteue­rungs-Einrichtung für die Spritzdüsen.If, without prior alignment of the containers or container parts, their damaged areas or areas free of corrosion protection agents are to be coated by means of the nozzle arrangement according to the ink jet method, it is advisable to design the device in such a way that an optical path along the conveying path of the containers or container parts or electronic scanning device for ascertaining the position of the containers or container parts and the areas at risk of corrosion present thereon, and a device for converting the scanning signals or the captured image in pixels and control signals derived therefrom and a block-shaped arrangement of spray nozzles dimensioned larger than the respective area at risk of corrosion is provided in connection with a program control device for the spray nozzles which can be actuated as a function of the control signals.

Im Falle einer optischen Abtasteinrichtung kann hierzu eine Kamera beispielsweise nach Art einer Video-Kamera verwendet werden, durch die bereits das erfaßte Bild in Bildpunkte zerlegt wird, die in bekannter Weise in Steuersignale umzuwandeln sind, um die Programm­steuerungs-Einrichtung für die Spritzdüsen zu betätigen.In the case of an optical scanning device, a camera can be used for this, for example in the manner of a video camera, by means of which the captured image is already broken down into pixels which are to be converted into control signals in a known manner in order to actuate the program control device for the spray nozzles.

Claims (5)

1. Verfahren zum Auftragen von flüssigen Korrosions­schutzmitteln, insbesondere Lack, auf korrosions­gefährdete Bereiche von Verpackungsbehältern oder -behälterteilen aus Metall, die nach der Lackierung der Behälter oder Behälterteile durch Bearbeitungs­vorgänge, wie Schneiden, Ritzen, Schweißen, Verformen oder dgl., infolge örtlicher Beschädigungen oder Beseitigungen der Lackierung entstanden sind, dadurch gekennzeichnet, daß die an den Behältern oder Behälterteilen entstandenen korrosionsgefährdeten Bereiche nach der Ink-Jet-­Methode durch programmgesteuertes, punktförmiges Aufbringen des Korrosionsschutzmittels zur Bildung eines filmartigen Auftrages beschichtet werden.1.Procedure for applying liquid anticorrosive agents, in particular paint, to areas of packaging containers or container parts made of metal which are at risk of corrosion and which, after the container or container parts have been coated, are subjected to processing operations such as cutting, scratching, welding, deforming or the like, as a result of local damage or Removal of the paint has occurred, characterized in that the areas at risk of corrosion on the containers or container parts are coated by the ink-jet method by program-controlled, punctiform application of the anti-corrosion agent to form a film-like application. 2. Verfahren nach Anspruch 1, dadurch ge­kennzeichnet, daß die an den Behältern oder Behälterteilen entstandenen korrosionsgefähr­deten Bereiche optisch bzw. elektrisch oder elek­tronisch abgetastet werden, und daß die Abtastsignale in Steuersignale zur Lagesteuerung der Behälter oder Behälterteile in bezug auf eine Spritzdüsen­anordnung und/oder zur Programmsteuerung für eine Spritzdüsenanordnung zum Aufbringen der Punkte des Korrosionsschutzmittels auf die korrosions­gefährdeten Bereiche umgewandelt werden.2. The method according to claim 1, characterized in that the areas at risk of corrosion formed on the containers or container parts are optically or electrically or electronically scanned, and that the scanning signals in control signals for position control of the container or container parts in relation to a spray nozzle arrangement and / or Program control for a spray nozzle arrangement for applying the points of the anti-corrosion agent to the areas at risk of corrosion can be converted. 3. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß im Zuge eines Förderweges der Behälter oder Behälterteile eine ortsfeste Düsenanordnung in Verbindung mit einer vorgeordneten Einrichtung zum Ausrichten und/oder Fixieren der Behälter oder Behälterteile auf dem Förderer vorgesehen ist, um die Behälter oder Be­hälterteile auf dem Förderer in eine jeweils über­einstimmende Lage in bezug auf die Düsenanordnung zu überführen und/oder zu halten.3. Device for performing the method according to one of claims 1 or 2, characterized in that in the course of a conveying path of the container or container parts, a stationary nozzle arrangement in connection with a Upstream device for aligning and / or fixing the container or container parts on the conveyor is provided in order to transfer and / or hold the container or container parts on the conveyor in a respectively corresponding position with respect to the nozzle arrangement. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Düsenanordnung der geometrischen Form des jeweilig korrosions­gefährdeten Bereiches des Beälters oder des Be­hälterteiles angepaßt ist.4. The device according to claim 3, characterized in that the nozzle arrangement of the geometric shape of the respective corrosion-prone area of the container or the container part is adapted. 5. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß im Zuge eines Förderweges der Behälter oder Behälterteile eine optische oder elektronische Abtasteinrichtung zur Feststellung der Lage der Behälter oder Behälterteile und der an diesen vorhandenen korrosionsgefährdeten Bereiche sowie eine Einrichtung zur Umwandlung der Abtastsignale oder des erfaßten Bildes in Bild­punkte und hiervon abgeleitete Steuersignale und eine größer als der jeweilige korrosionsgefährdete Bereich bemessene blockförmige Anordnung von Spritz­düsen vorgesehen ist in Verbindung mit einer in Abhängigkeit von den Steuersignalen betätigbaren Programmsteuerungs-Einrichtung für die Spritzdüsen.5. Apparatus for performing the method according to one of claims 1 or 2, characterized in that in the course of a conveying path of the container or container parts, an optical or electronic scanning device for determining the position of the container or container parts and the areas at risk of corrosion present thereon as well as a device For converting the scanning signals or the captured image into pixels and control signals derived therefrom and a block-shaped arrangement of spray nozzles which is larger than the respective area at risk of corrosion is provided in connection with a program control device for the spray nozzles which can be actuated as a function of the control signals.
EP87100533A 1986-02-01 1987-01-16 Process and device for applying liquid anticorrosive agents to corrosion-susceptible parts of packing vessels or parts thereof Expired - Lifetime EP0240651B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100533T ATE51164T1 (en) 1986-02-01 1987-01-16 METHOD AND DEVICE FOR APPLYING LIQUID ANTI-CORSION AGENT TO AREAS OF PACKAGING CONTAINERS OR PARTS AT RISK OF CORROSION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3603126 1986-02-01
DE19863603126 DE3603126A1 (en) 1986-02-01 1986-02-01 METHOD AND DEVICE FOR APPLYING LIQUID CORROSION PROTECTIVE AGENTS ON CORROSION HAZARDOUS AREAS OF PACKAGING CONTAINERS OR CONTAINER PARTS

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EP0240651A1 true EP0240651A1 (en) 1987-10-14
EP0240651B1 EP0240651B1 (en) 1990-03-21

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EP87100533A Expired - Lifetime EP0240651B1 (en) 1986-02-01 1987-01-16 Process and device for applying liquid anticorrosive agents to corrosion-susceptible parts of packing vessels or parts thereof

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US (1) US4842887A (en)
EP (1) EP0240651B1 (en)
JP (1) JPS62186971A (en)
AT (1) ATE51164T1 (en)
AU (1) AU587890B2 (en)
CA (1) CA1261209A (en)
DE (2) DE3603126A1 (en)
DK (1) DK162583C (en)
ES (1) ES2002240A6 (en)
FI (1) FI83845C (en)
NO (1) NO870400L (en)
PT (1) PT84214B (en)

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US5387444A (en) * 1992-02-27 1995-02-07 Dymax Corporation Ultrasonic method for coating workpieces, preferably using two-part compositions
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Also Published As

Publication number Publication date
ES2002240A6 (en) 1988-07-16
US4842887A (en) 1989-06-27
FI83845B (en) 1991-05-31
DK6887A (en) 1987-08-02
AU587890B2 (en) 1989-08-31
DK6887D0 (en) 1987-01-07
JPS62186971A (en) 1987-08-15
FI865209A (en) 1987-08-02
DE3603126A1 (en) 1987-08-06
FI865209A0 (en) 1986-12-19
PT84214B (en) 1991-02-08
DK162583B (en) 1991-11-18
CA1261209A (en) 1989-09-26
AU6817587A (en) 1987-08-06
EP0240651B1 (en) 1990-03-21
DK162583C (en) 1992-04-13
PT84214A (en) 1987-02-01
NO870400L (en) 1987-08-03
DE3603126C2 (en) 1990-02-01
NO870400D0 (en) 1987-01-30
DE3761949D1 (en) 1990-04-26
ATE51164T1 (en) 1990-04-15
FI83845C (en) 1991-09-10

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