EP0377449B1 - Method for marking elongate articles - Google Patents

Method for marking elongate articles Download PDF

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Publication number
EP0377449B1
EP0377449B1 EP90100065A EP90100065A EP0377449B1 EP 0377449 B1 EP0377449 B1 EP 0377449B1 EP 90100065 A EP90100065 A EP 90100065A EP 90100065 A EP90100065 A EP 90100065A EP 0377449 B1 EP0377449 B1 EP 0377449B1
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EP
European Patent Office
Prior art keywords
nozzle
bypass
nozzles
paint
valve
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
EP90100065A
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German (de)
French (fr)
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EP0377449A3 (en
EP0377449A2 (en
Inventor
Ernst Dipl.-Ing. Hoffmann
Harry Dipl.-Ing. Staschewski
Siegfried Wandelt
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Kabelmetal Electro GmbH
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Kabelmetal Electro GmbH
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Publication date
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Priority to AT90100065T priority Critical patent/ATE95942T1/en
Publication of EP0377449A2 publication Critical patent/EP0377449A2/en
Publication of EP0377449A3 publication Critical patent/EP0377449A3/en
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Publication of EP0377449B1 publication Critical patent/EP0377449B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/34—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables
    • H01B13/345—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables by spraying, ejecting or dispensing marking fluid

Definitions

  • the invention relates to a method for the continuous marking of material moving in its longitudinal direction, by means of which annular features limited in the axial direction are applied to the surface of the material by means of color jets, which are under pressure from at least two parallel nozzles which continuously oscillate about an oscillation axis emerge and hit the surface at a right angle to the direction of movement of the material and in which the nozzles are supplied with paint by a common pump via a supply line (DE-A-14 65 660).
  • “Elongated goods” in the sense of the invention are, for example, electrical lines, such as control lines, or also insulated wires of communication cables, to which the following statements - representative of all other applications - relate.
  • Color coding of wires is required for communication cables so that individual wires can be easily identified for installation. For example, in the case of four wires to be twisted into a four, rings are sprayed onto their insulation on three of these wires, each wire being labeled differently. The fourth wire remains free.
  • the three wires can be marked in such a way that the first wire is single rings, the second wire is double rings in short distance and the third wire double rings with a greater distance or that the wires are provided with features of different colors.
  • the individual features are applied at equal intervals from one another.
  • the invention has for its object a method for applying features to a wire using at least two parallel nozzles having nozzle system to specify, in which it is ensured in a simple manner that the quality of the sprayed features is not changed even if one of the nozzles is switched off from the paint supply.
  • This object is achieved in a method of the type described in accordance with the invention in that when one of the nozzles is switched off from the supply line, a bypass connected to the same is simultaneously opened, via which the quantity of paint intended for the switched-off nozzle is discharged.
  • the amount of paint that is fed to the individual nozzles remains constant. This applies in particular when the ink supply to one of the nozzles is interrupted, since the amount of ink intended for this nozzle is discharged via the bypass.
  • the exit velocity of the color jets from the nozzles remains unchanged regardless of how many nozzles are supplied with paint, without having to change the power of the pump, for example. Accordingly, the quality of the ring-shaped features sprayed onto the wire is retained, regardless of whether only one feature or two or more features are sprayed on simultaneously.
  • the device shown in the drawings works with nozzle systems in which two nozzles are arranged parallel to one another.
  • nozzle systems with more than two parallel nozzles could also be used, which are supplied with paint by a common pump via a feed line.
  • two nozzle systems A and B are arranged on opposite sides of a wire 1 passing through in the direction of arrow P so that they are shifted in the axial direction relative to one another in such a way that the ink jets 2 of the nozzle system A on one side of the wire 1 applied features are supplemented by the color jets 3 of the nozzle system B to full rings 4.
  • the nozzle systems A and B oscillate at an adjustable frequency around the oscillation axes 5, so that the color jets 2 and 3 emerging from the nozzles 6 and 7 of the nozzle system A or the nozzles 8 and 9 of the nozzle system B oscillate with a predetermined amplitude and wavelength.
  • the nozzle bodies 10 and 11 carrying the nozzles 6 and 7 or 8 and 9 are connected via feed lines 12 and 13 to a reservoir for paint, from which they are supplied with paint by means of a pump.
  • the storage container and pump are not shown for the sake of simplicity.
  • the feed lines 12 and 13 can be flexible.
  • the color shells 14 and 15 arranged on the side of the wire 1 opposite the nozzle bodies 10 and 11 serve to collect the continuously oscillating color jets 2 and 3 and to return the excess amount of paint into the color reservoir.
  • the nozzle system B can be moved parallel to the wire 1 according to the double arrow 16, around the half rings generated by the color jets 2 and 3 of the nozzles A and B. to be able to cover.
  • a flash of light strobe 17 serves to control the overlap of the half rings to form the closed rings 4 during manufacture, in which the wire 1 is pulled off at a very high speed in the direction of the arrow P.
  • the nozzles 6 to 9 execute an oscillating movement, the limits of which are shown in broken lines in FIG. 2 for the nozzle 6 of the nozzle system A.
  • the color jet 2 emerging from the nozzle 6 executes sinusoidal paths with uniform, continuous vibration, as are also shown in FIG. 2. In this way, a half ring is produced, for example, by the nozzle system A on one side of the wire 1, which is then supplemented by the ink jet 3 of the nozzle system B to form the full ring 4.
  • FIG. 3 a section from FIG. 1 is shown schematically in a further enlarged illustration, in which only the nozzle system A is taken into account for the sake of simplicity.
  • the color shell 14 is also drawn here as if the vibration system 10 extends into the same.
  • the paint is fed to the nozzle system A via the feed line 12 and divided into the two nozzles 6 and 7 in the same.
  • the nozzle 7 is to be switched off from the ink supply.
  • a bypass 18 is connected to the feed line 12, which is opened at the moment when the nozzle 7 is closed.
  • the bypass 18 guides the color in the same amount as it was intended for the nozzle 7 directly to the ink tray 14.
  • the bypass 18 could, for example, also lead to the ink reservoir and return the amount of ink derived directly to the same.
  • the bypass 18 must be dimensioned or the cross section adjusted before the entire device is started up. This cross section is to be chosen so that the same amount of paint that would be given to the nozzle 7 if it were open is discharged. This ensures that the amount of paint that is fed further to the nozzle 6 remains the same, so that the exit velocity of the ink jet 2 from the nozzle 6 is not changed. The amplitude and the wavelength of the color beam 2 of the nozzle 6 are thus retained, so that the only annular feature which is now sprayed onto the wire 1 can be produced as a closed, sharply contoured ring 4.
  • a throttle valve 19 can be arranged in the same, by means of which the cross section or the amount of paint to be discharged via the bypass 18 can be set in a particularly simple manner.
  • nozzle 7 If the nozzle 7 is to be separated from the ink supply, this can basically be done by means of a valve which is then closed. At the same time, the bypass 18 could be opened via a further valve. The two valves must then be coordinated so that they are closed or opened at the same time.
  • a 3/2-way valve 20 is used for closing the nozzle 7 and opening the bypass 18, in which the opening for the nozzle 7 and the one for the bypass 18 are closed simultaneously by moving the valve body or a corresponding control member be opened.
  • the valve 20 is shown as a solenoid valve which has an armature 21 which in Direction of the double arrow 22 is movable and closes the opening for the bypass 18 in one end position, while the opening for the nozzle 7 is closed in the other end position. At the same time, the other openings are released.
  • the armature 21 can be excited by the coil 23 and brought into the respective position. It is only indicated schematically in FIG. 3. Guide elements for the anchor 21 have been omitted for the sake of simplicity.
  • valve 20 as a solenoid valve is the simplest.
  • the directional control valve could also be designed as a pneumatic or hydraulic 3/2-way valve 20, which in each case has three ways, namely route I for supplying the paint, route II for removing the paint through the nozzle 7 and the route III for removing the paint through the bypass 18.
  • the "2" stands for example for the two positions of the armature 21 of the solenoid valve shown.
  • the nozzle 7 If the nozzle 7 is switched off from the ink supply and this state is maintained over a long period of time, the ink contained in the nozzle 7 and its feed line must be removed as far as possible so that the nozzle 7 does not become blocked.
  • the nozzle system can then be switched back to both nozzles 6 and 7 to produce two rings 4 without interruption.

Abstract

A method is specified for the continuous marking of articles (1) which are moved in their longitudinal direction, by means of which method annular features which are limited in the axial direction are applied by means of paint jets (2) on to the surface of the article (1). The paint jets (2) emerge under pressure from two nozzles (6, 7), which are arranged parallel to one another and oscillate continuously about an oscillating axis (5). If it is intended to use only one nozzle (6), the other (7) is closed by means of a 2/3 way valve (20). At the same time, a bypass (18) is opened, via which the paint quantity intended for the switched-off nozzle (7) is led away. The paint jet (2) of the nozzle (6) which continues to be used then remains unchanged.

Description

Die Erfindung betrifft ein Verfahren zur fortlaufenden Kennzeichnung von in seiner Längsrichtung bewegtem Gut, mit welchem auf die Oberfläche des Guts ringförmige, in axialer Richtung begrenzte Merkmale mittels Farbstrahlen aufgebracht werden, die unter Druck aus mindestens zwei parallel zueinander angeordneten, kontinuierlich um eine Schwingachse schwingenden Düsen austreten und im rechten Winkel zur Bewegungsrichtung des Guts auf dessen Oberfläche auftreffen und bei welchem die Düsen von einer gemeinsamen Pumpe über eine Zuleitung mit Farbe versorgt werden (DE-A- 14 65 660).The invention relates to a method for the continuous marking of material moving in its longitudinal direction, by means of which annular features limited in the axial direction are applied to the surface of the material by means of color jets, which are under pressure from at least two parallel nozzles which continuously oscillate about an oscillation axis emerge and hit the surface at a right angle to the direction of movement of the material and in which the nozzles are supplied with paint by a common pump via a supply line (DE-A-14 65 660).

"Langgestrecktes Gut" im Sinne der Erfindung sind beispielsweise elektrische Leitungen, wie beispielsweise Steuerleitungen, oder auch isolierte Adern von Nachrichtenkabeln, auf die sich die folgenden Ausführungen - stellvertretend für alle anderen Anwendungsfälle - beziehen.“Elongated goods” in the sense of the invention are, for example, electrical lines, such as control lines, or also insulated wires of communication cables, to which the following statements - representative of all other applications - relate.

Die farbliche Kennzeichnung von Adern ist bei Nachrichtenkabeln erforderlich, damit für die Montage eine einfache Identifizierung einzelner Adern möglich ist. So werden beispielsweise bei je vier zu einem Vierer zu verseilenden Adern auf drei dieser Adern Ringe auf ihre Isolierung aufgespritzt, wobei jede Ader anders gekennzeichnet ist. Die vierte Ader bleibt frei. Die Kennzeichnung der drei Adern kann so erfolgen, daß die erste Ader Einfachringe, die zweite Adern Doppelringe in kurzem Abstand und die dritte Ader Doppelringe mit größerem Abstand erhält oder daß die Adern mit Merkmalen unterschiedlicher Farbe versehen werden. Die einzelnen Merkmale werden in gleichmäßigen Abständen voneinander aufgebracht.Color coding of wires is required for communication cables so that individual wires can be easily identified for installation. For example, in the case of four wires to be twisted into a four, rings are sprayed onto their insulation on three of these wires, each wire being labeled differently. The fourth wire remains free. The three wires can be marked in such a way that the first wire is single rings, the second wire is double rings in short distance and the third wire double rings with a greater distance or that the wires are provided with features of different colors. The individual features are applied at equal intervals from one another.

In der eingangs erwähnten DE-A- 14 65 660 ist ein Verfahren beschrieben, bei dem eine unter dem Handelsnamen "Colomat" bekanntgewordene Vorrichtung verwendet wird. Mit dieser Vorrichtung werden unmittelbar nach dem Aufbringen des Isoliermaterials auf die Leiter der Adern, die Merkmale auf dieselben aufgespritzt. Die Farbstrahlen treffen also auf eine relativ heiße Isolierung, so daß der Farbstoff schnell trocknet und sich mit dem Isolierstoff fest verbindet. Bei diesem bekannten Verfahren werden zwei parallel zueinander angeordnete Düsen eingesetzt, die auf der Isolierung einer Ader zwei Dinge erzeugen, die einen festen Abstand voneinander haben. Wenn diese Art der Kennzeichnung der Ader auf nur noch einen Ring verändert werden soll, dann muß entweder ein neues Düsensystem mit nur einer Düse eingesetzt werden oder es muß die Farbzufuhr zu einer der beiden Düsen unterbrochen sein. Ein Wechsel des Düsensystems ist zeitlich aufwendig, die Fertigung muß dabei angelhalten werden und ein zweites Düsensystem bedingt höhere Kosten. Wenn bei einem Düsensystem mit zwei parallelen Düsen die Farbzufuhr an eine Düse unterbrochen wird, ergeben sich ebenfalls Probleme, da die gesamte, von der gemeinsamen Pumpe geförderte Farbmenge jetzt der einen, noch offenen Düse zugeführt wird. Durch die dann erhöhte Austrittsgeschwindigkeit des Farbstrahls aus der Düse wird dessen Wellenlänge vergrößert. Das führt zu einer unzulässigen Veränderung der auf die Ader aufgespritzten Merkmale.In the aforementioned DE-A-14 65 660 a method is described in which a device known under the trade name "Colomat" is used. With this device, the features are sprayed onto the conductors of the conductors immediately after the insulating material has been applied to the conductors. The color jets hit a relatively hot insulation so that the dye dries quickly and bonds firmly to the insulating material. In this known method, two nozzles arranged parallel to one another are used, which produce two things on the insulation of a wire, which are at a fixed distance from one another. If this type of marking of the wire is to be changed to only one ring, then either a new nozzle system with only one nozzle must be used or the ink supply to one of the two nozzles must be interrupted. Changing the nozzle system is time-consuming, production must be stopped and a second nozzle system entails higher costs. If the ink supply to one nozzle is interrupted in a nozzle system with two parallel nozzles, problems also arise since the entire amount of paint conveyed by the common pump is now supplied to the one nozzle which is still open. The wavelength of the ink jet is increased due to the then increased exit velocity of the ink jet. This leads to an inadmissible change in the characteristics sprayed onto the wire.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Aufbringen von Merkmalen auf eine Ader unter Verwendung eines mindestens zwei parallele Düsen aufweisenden Düsensystems anzugeben, bei dem auf einfache Weise sichergestellt ist, daß die Qualität der aufgespritzten Merkmale auch dann nicht verändert wird, wenn eine der Düsen von der Farbzufuhr abgeschaltet wird.The invention has for its object a method for applying features to a wire using at least two parallel nozzles having nozzle system to specify, in which it is ensured in a simple manner that the quality of the sprayed features is not changed even if one of the nozzles is switched off from the paint supply.

Diese Aufgabe wird bei einem Verfahren der eingangs geschilderten Art gemäß der Erfindung dadurch gelöst, daß bei Abschaltung einer der Düsen von der Zuleitung gleichzeitig ein mit derselben verbundener Bypass geöffnet wird, über den die für die abgeschaltete Düse bestimmte Farbmenge abgeführt wird.This object is achieved in a method of the type described in accordance with the invention in that when one of the nozzles is switched off from the supply line, a bypass connected to the same is simultaneously opened, via which the quantity of paint intended for the switched-off nozzle is discharged.

Bei Einsatz dieses Verfahrens bleibt die Farbmenge, welche den einzelnen Düsen zugeführt wird, ständig gleich. Das gilt insbesondere dann, wenn die Farbzufuhr an eine der Düsen unterbrochen wird, da die für diese Düse bestimmte Farbmenge über den Bypass abgeführt wird. Die Austrittsgeschwindigkeit der Farbstrahlen aus den Düsen bleibt also unabhängig davon, wieviel Düsen mit Farbe versorgt werden, unverändert, ohne daß dazu beispielsweise die Leistung der Pumpe verändert werden müßte. Dementsprechend bleibt die Qualität der auf die Ader aufgespritzten ringförmigen Merkmale erhalten, unabhängig davon, ob nur ein Merkmal oder gleichzeitig zwei oder mehr Merkmale aufgespritzt werden.When using this method, the amount of paint that is fed to the individual nozzles remains constant. This applies in particular when the ink supply to one of the nozzles is interrupted, since the amount of ink intended for this nozzle is discharged via the bypass. The exit velocity of the color jets from the nozzles remains unchanged regardless of how many nozzles are supplied with paint, without having to change the power of the pump, for example. Accordingly, the quality of the ring-shaped features sprayed onto the wire is retained, regardless of whether only one feature or two or more features are sprayed on simultaneously.

Vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Advantageous embodiments of the invention emerge from the subclaims.

Das Verfahren nach der Erfindung wird anhand der Zeichnungen als Ausführungsbeispiel erläutert.The method according to the invention is explained with reference to the drawings as an embodiment.

Es zeigen:

  • Fig. 1 in schematischer Darstellung eine Vorrichtung zur Durchführung des Verfahrens.
  • Fig. 2 und 3 Einzelheiten der Vorrichtung in vergrößerten Darstellungen.
Show it:
  • Fig. 1 shows a schematic representation of an apparatus for performing the method.
  • 2 and 3 details of the device in enlarged views.

Die in den Zeichnungen dargestellte Vorrichtung arbeitet mit Düsensystemen, in denen zwei Düsen parallel zueinander angeordnet sind. Es könnten aber auch Düsensysteme mit mehr als zwei parallelen Düsen verwendet werden, die über eine Zuleitung von einer gemeinsamen Pumpe mit Farbe versorgt werden.The device shown in the drawings works with nozzle systems in which two nozzles are arranged parallel to one another. However, nozzle systems with more than two parallel nozzles could also be used, which are supplied with paint by a common pump via a feed line.

Bei der Vorrichtung nach Fig. 1 sind zwei Düsensysteme A und B auf einander gegenüberliegenden Seiten einer in Richtung des Pfeiles P durchlaufenden Ader 1 so in deren Achsrichtung gegeneinander verschoben angeordnet, daß die von den Farbstrahlen 2 des Düsensystems A auf der einen Seite der Ader 1 aufgebrachten Merkmale durch die Farbstrahlen 3 des Düsensystems B zu vollen Ringen 4 ergänzt werden. Die Düsensysteme A und B schwingen mit einstellbarer Frequenz um die Schwingachsen 5, so daß die unter Druck aus den Düsen 6 und 7 des Düsensystems A bzw. den Düsen 8 und 9 des Düsensystems B austretenden Farbstrahlen 2 und 3 mit vorgegebener Amplitude und Wellenlänge schwingen.In the device according to FIG. 1, two nozzle systems A and B are arranged on opposite sides of a wire 1 passing through in the direction of arrow P so that they are shifted in the axial direction relative to one another in such a way that the ink jets 2 of the nozzle system A on one side of the wire 1 applied features are supplemented by the color jets 3 of the nozzle system B to full rings 4. The nozzle systems A and B oscillate at an adjustable frequency around the oscillation axes 5, so that the color jets 2 and 3 emerging from the nozzles 6 and 7 of the nozzle system A or the nozzles 8 and 9 of the nozzle system B oscillate with a predetermined amplitude and wavelength.

Die die Düsen 6 und 7 bzw. 8 und 9 tragenden Düsenkörper 10 und 11 sind über Zuleitungen 12 bzw. 13 mit einem Vorratsbehälter für Farbe verbunden, aus dem sie mittels einer Pumpe mit Farbe versorgt werden. Vorratsbehälter und Pumpe sind der Einfachheit halber nicht mit dargestellt. Die Zuleitungen 12 und 13 können flexibel sein. Die jeweils auf der den Düsenkörpern 10 und 11 gegenüberliegenden Seite der Ader 1 angeordneten Farbschalen 14 und 15 dienen dazu, die kontinuierlich schwingenden Farbstrahlen 2 und 3 aufzufangen und die überschüssige Farbmenge in den Vorratsbehälter der Farben zurückzuleiten.The nozzle bodies 10 and 11 carrying the nozzles 6 and 7 or 8 and 9 are connected via feed lines 12 and 13 to a reservoir for paint, from which they are supplied with paint by means of a pump. The storage container and pump are not shown for the sake of simplicity. The feed lines 12 and 13 can be flexible. The color shells 14 and 15 arranged on the side of the wire 1 opposite the nozzle bodies 10 and 11 serve to collect the continuously oscillating color jets 2 and 3 and to return the excess amount of paint into the color reservoir.

Das Düsensystem B kann entsprechend dem Doppelpfeil 16 parallel zur Ader 1 verschiebbar sein, um die von den Farbstrahlen 2 und 3 der Düsen A und B erzeugten Halbringe zur Deckung bringen zu können. Ein Lichtblitzstroboskop 17 dient dazu, die Überdeckung der Halbringe zur Bildung der geschlossenen Ringe 4 während der Fertigung zu kontrollieren, bei welcher die Ader 1 mit sehr hoher Geschwindigkeit in Richtung des Pfeiles P abgezogen wird. Bei der Schwingung um die Schwingachsen 5 führen die Düsen 6 bis 9 eine Schwingbewegung aus, deren Grenzen in Fig. 2 für die Düse 6 des Düsensystems A gestrichelt eingezeichnet sind. Der dabei aus der Düse 6 austretende Farbstrahl 2 führt bei gleichförmiger kontinuierlicher Schwingung sinusförmige Wege aus, wie sie ebenfalls in Fig. 2 dargestellt sind. Auf diese Weise wird beispielsweise durch das Düsensystem A auf der einen Seite der Ader 1 ein Halbring erzeugt, der anschließend durch den Farbstrahl 3 des Düsensystems B zu dem vollen Ring 4 ergänzt wird.The nozzle system B can be moved parallel to the wire 1 according to the double arrow 16, around the half rings generated by the color jets 2 and 3 of the nozzles A and B. to be able to cover. A flash of light strobe 17 serves to control the overlap of the half rings to form the closed rings 4 during manufacture, in which the wire 1 is pulled off at a very high speed in the direction of the arrow P. During the oscillation around the oscillation axes 5, the nozzles 6 to 9 execute an oscillating movement, the limits of which are shown in broken lines in FIG. 2 for the nozzle 6 of the nozzle system A. The color jet 2 emerging from the nozzle 6 executes sinusoidal paths with uniform, continuous vibration, as are also shown in FIG. 2. In this way, a half ring is produced, for example, by the nozzle system A on one side of the wire 1, which is then supplemented by the ink jet 3 of the nozzle system B to form the full ring 4.

Mit dem geschilderten Verfahren können gleichzeitig zwei Merkmale als Ringe 4 auf die Ader 1 aufgespritzt werden. Wenn mit der gleichen Vorrichtung, ohne Änderung in der Farbversorgung und ohne Änderung der Düsensysteme A und B, nur noch ein Merkmal aufgespritzt werden soll, wird beispielsweise wie folgt vorgegangen:With the described method, two features can be sprayed onto the wire 1 as rings 4 at the same time. If, with the same device, without changing the paint supply and without changing the nozzle systems A and B, only one feature is to be sprayed on, the procedure is as follows:

In Fig. 3 ist schematisch in nochmals vergrößerter Darstellung ein Ausschnitt aus Fig. 1 wiedergegeben, bei dem der Einfachheit halber nur das Düsensystem A berücksichtigt ist. Die Farbschale 14 ist hier außerdem so gezeichnet, als ob das Schwingsystem 10 bis in dieselbe hineinragt. Die Farbe wird dem Düsensystem A über die Zuleitung 12 zugeführt und in demselben auf die beiden Düsen 6 und 7 aufgeteilt. Von den beiden zunächst im Einsatz befindlichen Düsen 6 und 7 soll beispielsweise die Düse 7 von der Farbzufuhr abgeschaltet werden. Für diesen Zweck ist an die Zuleitung 12 ein Bypass 18 angeschlossen, der in dem Moment geöffnet wird, in dem die Düse 7 geschlossen wird. Der Bypass 18 führt im dargestellten Ausführungsbeispiel die Farbe in der gleichen Menge wie sie für die Düse 7 bestimmt war direkt zur Farbschale 14. Der Bypass 18 könnte aber beispielsweise auch zum Vorratsbehälter der Farbe führen und die abgeleitete Farbmenge direkt in denselben zurückführen.In FIG. 3, a section from FIG. 1 is shown schematically in a further enlarged illustration, in which only the nozzle system A is taken into account for the sake of simplicity. The color shell 14 is also drawn here as if the vibration system 10 extends into the same. The paint is fed to the nozzle system A via the feed line 12 and divided into the two nozzles 6 and 7 in the same. Of the two nozzles 6 and 7 which are initially in use, the nozzle 7, for example, is to be switched off from the ink supply. For this purpose, a bypass 18 is connected to the feed line 12, which is opened at the moment when the nozzle 7 is closed. In the exemplary embodiment shown, the bypass 18 guides the color in the same amount as it was intended for the nozzle 7 directly to the ink tray 14. However, the bypass 18 could, for example, also lead to the ink reservoir and return the amount of ink derived directly to the same.

Der Bypass 18 muß vor Inbetriebnahme der ganzen Vorrichtung bemessen bzw. in seinem Querschnitt eingestellt werden. Dieser Querschnitt ist so zu wählen, daß die gleiche Farbmenge, die an die Düse 7 gegeben würde, wenn dieselbe offen wäre, abgeführt wird. Dadurch ist sichergestellt, daß die Farbmenge, die weiter zur Düse 6 geführt wird, gleichbleibt, so daß die Austrittsgeschwindigkeit des Farbstrahls 2 aus der Düse 6 nicht verändert wird. Die Amplitude und die Wellenlänge des Farbstrahls 2 der Düse 6 bleiben also erhalten, so daß das einzige ringförmige Merkmal, das jetzt auf die Ader 1 aufgespritzt wird, als geschlossener, konturenscharfer Ring 4 erzeugt werden kann. Zur Einstellung des Bypass 18 kann in demselben ein Drosselventil 19 angeordnet werden, durch welches auf besonders einfache Weise der Querschnitt bzw. die über den Bypass 18 abzuführende Farbmenge genau eingestellt werden können.The bypass 18 must be dimensioned or the cross section adjusted before the entire device is started up. This cross section is to be chosen so that the same amount of paint that would be given to the nozzle 7 if it were open is discharged. This ensures that the amount of paint that is fed further to the nozzle 6 remains the same, so that the exit velocity of the ink jet 2 from the nozzle 6 is not changed. The amplitude and the wavelength of the color beam 2 of the nozzle 6 are thus retained, so that the only annular feature which is now sprayed onto the wire 1 can be produced as a closed, sharply contoured ring 4. To set the bypass 18, a throttle valve 19 can be arranged in the same, by means of which the cross section or the amount of paint to be discharged via the bypass 18 can be set in a particularly simple manner.

Wenn die Düse 7 von der Farbzufuhr abgetrennt werden soll, kann das grundsätzlich mittels eines Ventils, das dann geschlossen wird, vorgenommen werden. Gleichzeitig könnte der Bypass 18 über ein weiteres Ventil geöffnet werden. Die beiden Ventile müssen dann so aufeinander abgestimmt sein, daß sie gleichzeitig geschlossen bzw. geöffnet werden.If the nozzle 7 is to be separated from the ink supply, this can basically be done by means of a valve which is then closed. At the same time, the bypass 18 could be opened via a further valve. The two valves must then be coordinated so that they are closed or opened at the same time.

In bevorzugter Ausführungsform wird für das Schließen der Düse 7 und das Öffnen des Bypass 18 ein 3/2 Wege-Ventil 20 eingesetzt, bei dem durch Bewegung des Ventilkörpers oder eines entsprechenden Steuerorgans gleichzeitig die Öffnung für die Düse 7 geschlossen und die für den Bypass 18 geöffnet werden. In Fig. 3 ist das Ventil 20 als Magnetventil dargestellt, das einen Anker 21 hat, der in Richtung des Doppelpfeiles 22 bewegbar ist und in der einen Endposition die Öffnung für den Bypass 18 verschließt, während in der anderen Endlage die Öffnung für die Düse 7 verschlossen ist. Gleichzeitig werden die jeweils anderen Öffnungen freigegeben. Der Anker 21 kann durch die Spule 23 erregt und in die jeweilige Position gebracht werden. Es ist in Fig. 3 nur schematisch angedeutet. Führungselemente für den Anker 21 wurden der Einfachheit halber fortgelassen.In a preferred embodiment, a 3/2-way valve 20 is used for closing the nozzle 7 and opening the bypass 18, in which the opening for the nozzle 7 and the one for the bypass 18 are closed simultaneously by moving the valve body or a corresponding control member be opened. In Fig. 3 the valve 20 is shown as a solenoid valve which has an armature 21 which in Direction of the double arrow 22 is movable and closes the opening for the bypass 18 in one end position, while the opening for the nozzle 7 is closed in the other end position. At the same time, the other openings are released. The armature 21 can be excited by the coil 23 and brought into the respective position. It is only indicated schematically in FIG. 3. Guide elements for the anchor 21 have been omitted for the sake of simplicity.

Die Ausführungsform des Ventils 20 als Magnetventil ist die einfachste. Das Wegeventil könnte jedoch auch als pneumatisches oder hydraulisches 3/2 Wege-Ventil 20 ausgeführt sein, das in jedem Fall drei Wege aufweist, nämlich den Weg I zur Zuführung der Farbe, den Weg II zur Abführung der Farbe durch die Düse 7 und den Weg III zur Abführung der Farbe durch den Bypass 18. Die "2" steht beispielsweise für die beiden Positionen des Ankers 21 des dargestellten Magnetventils.The embodiment of the valve 20 as a solenoid valve is the simplest. However, the directional control valve could also be designed as a pneumatic or hydraulic 3/2-way valve 20, which in each case has three ways, namely route I for supplying the paint, route II for removing the paint through the nozzle 7 and the route III for removing the paint through the bypass 18. The "2" stands for example for the two positions of the armature 21 of the solenoid valve shown.

Wenn die Düse 7 von der Farbzufuhr abgeschaltet wird und dieser Zustand über längere Zeit erhalten bleibt, muß die in der Düse 7 und ihrer Zuleitung enthaltende Farbe möglichst entfernt werden, damit die Düse 7 nicht verstopft. Das gleiche gilt im Prinzip für den Bypass 18, wenn derselbe wieder von der Farbzufuhr abgetrennt bzw. für das Abführen der Farbe nicht benötigt wird. Sowohl die Düse 7 und ihre Zuleitung als auch der Bypass 18 werden daher zweckmäßig nach Abschalten der Farbzufuhr gereinigt, so daß sie für einen weiteren Einsatz zur Verfügung stehen. Das Düsensystem kann dann ohne Unterbrechung auch wieder auf beide Düsen 6 und 7 zur Erzeugung von zwei Ringen 4 umgeschaltet werden.If the nozzle 7 is switched off from the ink supply and this state is maintained over a long period of time, the ink contained in the nozzle 7 and its feed line must be removed as far as possible so that the nozzle 7 does not become blocked. The same applies in principle to the bypass 18 if the bypass 18 is separated again from the ink supply or is not required for the removal of the ink. Both the nozzle 7 and its feed line as well as the bypass 18 are therefore expediently cleaned after the ink supply has been switched off, so that they are available for further use. The nozzle system can then be switched back to both nozzles 6 and 7 to produce two rings 4 without interruption.

Claims (6)

  1. Process for the continuous marking of an elongated product (1) moved in its longitudinal direction, by which annular marks, limited in the axial direction, can be applied to the surface of the product (1) by means of colour jets (2) which emerge under pressure from at least two nozzles (6, 7; 8, 9), arranged parallel to each other and oscillating continuously about an oscillating axis (5), and meet the surface of the product (1) at right angles to the direction of movement thereof, and in which the nozzles (6, 7; 8, 9) are supplied with colour from a common pump (A, B) via a feed line (12, 13), characterised in that, if one of the nozzles (6, 7; 8, 9) is switched off from the feed line (12, 13), at the same time a bypass (18) connected to the same is opened, via which bypass the amount of colour intended for the switched-off nozzle (6, 7; 8, 9) is led away.
  2. Process according to Claim 1, characterised in that the amount of colour flowing via the bypass (18) is adjustable.
  3. Process according to Claim 1 or 2, characterised in that a 3/2-way valve (20) is used for the switching off of the nozzle (6, 7; 8, 9) and the simultaneous opening of the bypass (18).
  4. Process according to Claim 3, characterised in that a solenoid valve is used as the valve (20).
  5. Process according to Claim 3, characterised in that a pneumatically operated valve is used as the valve (20).
  6. Process according to one of Claims 1 to 5, characterised in that the nozzle (6, 7; 8, 9) and the bypass (18) are cleaned in the respectively switched-off state.
EP90100065A 1989-01-04 1990-01-03 Method for marking elongate articles Expired - Lifetime EP0377449B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100065T ATE95942T1 (en) 1989-01-04 1990-01-03 METHOD OF MARKING ELONGED GOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900142A DE3900142A1 (en) 1989-01-04 1989-01-04 METHOD FOR LABELING LONG STRETCHED GOODS
DE3900142 1989-01-04

Publications (3)

Publication Number Publication Date
EP0377449A2 EP0377449A2 (en) 1990-07-11
EP0377449A3 EP0377449A3 (en) 1990-08-01
EP0377449B1 true EP0377449B1 (en) 1993-10-13

Family

ID=6371587

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Application Number Title Priority Date Filing Date
EP90100065A Expired - Lifetime EP0377449B1 (en) 1989-01-04 1990-01-03 Method for marking elongate articles

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Country Link
US (1) US5142298A (en)
EP (1) EP0377449B1 (en)
JP (1) JPH02245272A (en)
AT (1) ATE95942T1 (en)
DE (2) DE3900142A1 (en)
FI (1) FI900018A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5289767A (en) * 1992-08-21 1994-03-01 Videojet Systems International, Inc. Method and apparatus for guiding an elongated generally cylindrical member past a non-contact printing station
DE4438090A1 (en) * 1994-10-25 1996-05-02 Siemens Ag Coating and integrated durable marking of electrical and optical cables
US5901425A (en) 1996-08-27 1999-05-11 Topaz Technologies Inc. Inkjet print head apparatus
JP3971269B2 (en) * 2002-08-09 2007-09-05 矢崎総業株式会社 Wire coating method and apparatus
PT1760377E (en) * 2004-06-07 2012-05-23 Yazaki Corp Electromagnetic valve drive method, electromagnetic valve drive device, and electric cable coloring device
JP5028030B2 (en) * 2006-05-31 2012-09-19 矢崎総業株式会社 Electric wire coloring device
CN102596580A (en) * 2009-11-06 2012-07-18 施洛伊尼格控股有限公司 Cable inscription device and method for inscribing cables

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903840A (en) * 1969-01-27 1975-09-09 Joseph C Gemelli Marking apparatus
US4122457A (en) * 1976-09-13 1978-10-24 Bell & Howell Company Ink jet printer with deflected nozzles
JPS60104335A (en) * 1983-11-10 1985-06-08 Canon Inc Ink jet recording apparatus

Also Published As

Publication number Publication date
US5142298A (en) 1992-08-25
JPH02245272A (en) 1990-10-01
FI900018A0 (en) 1990-01-03
EP0377449A3 (en) 1990-08-01
EP0377449A2 (en) 1990-07-11
DE59003036D1 (en) 1993-11-18
DE3900142A1 (en) 1990-07-05
FI900018A (en) 1990-07-05
ATE95942T1 (en) 1993-10-15

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