EP0147536B1 - Apparatus for evenly distributing a liquid flow over a given width - Google Patents

Apparatus for evenly distributing a liquid flow over a given width Download PDF

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Publication number
EP0147536B1
EP0147536B1 EP84111161A EP84111161A EP0147536B1 EP 0147536 B1 EP0147536 B1 EP 0147536B1 EP 84111161 A EP84111161 A EP 84111161A EP 84111161 A EP84111161 A EP 84111161A EP 0147536 B1 EP0147536 B1 EP 0147536B1
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EP
European Patent Office
Prior art keywords
slot
application
sealing
pressure
region
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EP84111161A
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German (de)
French (fr)
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EP0147536A2 (en
EP0147536A3 (en
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Johannes Zimmer
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Individual
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Individual
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Priority claimed from AT358583A external-priority patent/AT379526B/en
Priority claimed from AT119384A external-priority patent/AT382091B/en
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Publication of EP0147536A3 publication Critical patent/EP0147536A3/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/10—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material
    • D06B1/14—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller
    • D06B1/16—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller the treating material being supplied from inside the roller

Definitions

  • the invention relates to a device for applying a, in a closed system within the device up to the application area, flowable medium on flat surfaces, webs, rollers and the like.
  • a device for applying a in a closed system within the device up to the application area, flowable medium on flat surfaces, webs, rollers and the like.
  • the flowable medium is evenly distributed over the application width device and opens with outlet openings in a collecting space, and wherein the boundary walls of the collecting space merge into a slot forming the application area.
  • Such a device is known from DE-A-3 200 171.
  • the distribution device which extends over the entire width of the application, consists of at least one plate in which there is a symmetrically branching duct system which is incorporated into it and which is converted on all sides and covered by the at least second plate part and which has an inlet opening and its branching ends in open into this cavity, that the slot rests sealingly on all sides against a template or without the use of a template directly on the surface to be applied, and that this sealing contact is brought about by a magnetizable mass or magnetized by a magnetic field.
  • Fig. 1 shows an embodiment of the invention with a width distribution device
  • Fig. 2 shows an embodiment in which the nozzle bar is designed as a double doctor blade.
  • 3 and 4 show another embodiment of the invention.
  • FIG. 1 shows an embodiment of the invention.
  • a main body 1 with a trough-shaped interior 2, to which a nozzle strip 3 connects.
  • a piston 16 is inserted, in which branching flow channels 17 are provided by continued division.
  • the piston 16 carries a seal 18 with respect to the wall of the interior 2.
  • the medium supplied is distributed over the entire length of the main body 1 via the flow channels 17 and exits into the interior 2 at the lower end and arrives there again via the bores 8, the collecting space 9 and the outlet slot 10 into the web 5.
  • a template 11 is again indicated.
  • a template 11 can also be provided between the exit slot 10 and the web 5, but this is not absolutely necessary and there can also be an exchangeable slide bar 15.
  • the nozzle bar In order to press the device against the web 5, the nozzle bar carries a mass 13 or 14 made of magnetizable material in its lower region. Below the web 5 there is a magnetic bar, not shown here, which acts on the mass of magnetizable material.
  • FIG. 2 shows another embodiment of the invention, where a piston 6 open at the top is inserted into the interior 2 of the main body 1.
  • the nozzle bar 3 is designed here as a double doctor blade, two doctor blades 20 being present, which form an outlet gap for the entry of the medium into the web 5.
  • a mass 21 made of magnetizable material is again used to press the outlet against a template 11 or the web 5.
  • branching flow channels 22 are also incorporated by continued division. As shown in FIG. 1, branching flow channels can be present both in the piston 16 and in the longitudinal wall of the main body.
  • the medium is fed to the flow channels 22 via a feed and then into the further flow channels divides, the material then being introduced into the interior 2 of the main body 1 in the lower region of the interior via a channel 24.
  • a flat plate 25 serves to cover the flow channels 22.
  • the medium 2 is continuously supplied to the interior 2. It is also possible to fill the interior 2 to a certain height, then insert the piston and start the application until the interior is emptied. Because the piston extends over the entire length of the interior, an irregularity in the surface of the medium is compensated for by the weight, the floating piston rod not only acting as a compensator but also as a control pulse generator for a foam delivery.
  • the bar 6, 16 shown in FIGS. 1 and 2, delimiting the cavity 2 or in the lower region 7, does not necessarily have to be designed as a floating piston, but can, in a structurally simplified manner, be firmly connected to the body 1. be bound and thus represent a fixed wall of this cavity 2.
  • the device has an inlet 38, to which the medium to be applied is fed via a pipe 35.
  • the entrance 38 is arranged in the center of the device and connects to the channel 17 through which the medium is guided in both longitudinal directions of the device.
  • This channel 17 is followed by an even more branching channel system 22, the channels of this channel system becoming ever smaller in diameter.
  • At the end of the channel system 22 there are then row-like exits 30 which open into a cavity 2 which corresponds to the width of the application width. 4, the cavity 2 ends in an application slot 28, the edges 26, 29 of which are pressed against the template 11 or the web 5 by means of magnetic force (magnetic bar 37).
  • FIG. 4 which is a section along the line A - A, there is a pressure measuring device 27 in the cavity 2.
  • the channel system 22 is worked into the surface of two bodies 33, 34, half of each channel being located in one body.
  • the two bodies can be connected to one another by gluing, by means of screws or in some other way.
  • the pressure measuring device 27 can determine the pressure conditions in the medium to be applied and, if necessary, control them. It should be noted that the conveyor, controlled by tachodynamo, delivers the amount of medium to be applied per unit area, controls the pressure measuring device, quality-oriented job printing and signals errors.
  • a roller 31 can be inserted at an edge of the slot 28, which preferably consists of magnetizable material.
  • the roller 31 and the slot 28 are then pressed against the template 11 or the web 5 by a magnetic bar 37.
  • An additional order function is brought about by the roller 31.
  • an additional bar 32 made of magnetizable material can be provided in the application area, this magnetizable bar 32 being arranged behind the slot 28 for exerting the slot sealing force, preferably in the direction of movement.
  • a control for the inflow control can be provided in the device, which increases the inflow quantity and / or the working pressure on the basis of a setting base with increasing working speed, and sets it to zero when the machine is at a standstill.
  • the slot 28 can be sealed by strips. Another option is elastic blades.
  • slide-in profiles 37 are present which, depending on their position, close one or more outputs 30. There is the possibility of pivoting the entire device about an axis 36 and thus lifting it off the template 11 or the web 5.
  • the present invention combines a number of measures by which it is possible to apply a flowable medium to flat surfaces, webs, rollers or the like, even at varying working speeds, in such a way that no unevenness occurs. Only the effectively used amount of medium is made available, so that only very small losses of medium occur when the application process is interrupted or ended.
  • branching system can also be designed in a different way, for. B. so that several plates are stacked, each of these plates then carrying a branching stage; i.e., channels are incorporated in the plates, which are then connected to the channels in the underlying plate via a hole.
  • two rollers can also be provided instead of the sealing strips, or one of the flat sealing strips can be replaced by a roller.
  • the contact surfaces of the two strips can be made very wide, with the wide sealing surfaces resulting in a low surface pressure, which is particularly advantageous for fluffy goods. It is also possible to use only the front one The strip is very wide, but the rear one is narrow and has a tear-off edge, which is particularly interesting for coatings.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coating Apparatus (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Auftragen eines, in einem geschlossenen System innerhalb der Vorrichtung bis zum Auftragungsbereich unter Druck stehenden, fließfähigen Mediums auf ebene Flächen, Bahnen, Walzen und dgl. in beliebiger Breite mit oder ohne Verwendung von Schablonen, wobei ein sich über den gesamten Auftragungsbereich erstreckender, geschlossener Hohlraum mit einer, das fließfähige Medium gleichmäßig über die Auftragungsbreite verteilenden Einrichtung verbunden ist und mit Austrittsöffnungen in einen Sammelraum mündet, und wobei die Begrenzungswände des Sammelraumes in einen den Auftragungsbereich bildenden Schlitz übergehen. Eine derartige Vorrichtung ist aus der DE-A-3 200 171 bekannt.The invention relates to a device for applying a, in a closed system within the device up to the application area, flowable medium on flat surfaces, webs, rollers and the like. In any width with or without the use of stencils, one over the Entire application area extending, closed cavity with a, the flowable medium is evenly distributed over the application width device and opens with outlet openings in a collecting space, and wherein the boundary walls of the collecting space merge into a slot forming the application area. Such a device is known from DE-A-3 200 171.

Zum Bedrucken oder Einfärben von Warenbahnen, z. B. beim Textildruck, aber auch zum Beschichten ist es notwendig, das Auftragsmedium gleichmäßig über die Arbeitsbreite zu vertei. len. Es ist bereits eine Reihe von Maßnahmen bekannt, wie man den Auftragseinrichtungen, also z. B. Rakelanordnungen oder den Austrittsschlitzen von Düsen, das fließfähige Material möglichst gleichmäßig zuführt. Die Gleichmäßigkeit des Auftrages und damit auch die Qualität der hergestellten Ware hängt stark von der gleichmäßigen Druckverteilung des fließfähigen Mediums über die Arbeitsbreite ab. Dazu ist es aber wiederum erforderlich, daß über die gesamte Arbeitsbreite an jeder Stelle die gleiche Menge an fließfähigem Material zur Verfügung steht. Das Problem ist sehr schwierig zu lösen, insbesondere, wenn man bedenkt, daß z. B. bei Schablonendruckmaschinen Arbeitsbreiten von mehr als 5 m vorhanden sein können. Noch größer werden diese Schwierigkeiten, wenn man auf die Warenbahn nur geringe Mengen des fließfähigen Mediums aufragen will, da hier Ungleichmäßigkeiten in der Abgabe des fließfähigen Mediums sich sehr viel stärker bemerkbar machen.For printing or coloring webs, e.g. B. in textile printing, but also for coating, it is necessary to distribute the application medium evenly across the working width. len. There are already a number of measures known how to order facilities, such. B. doctor blade arrangements or the outlet slots of nozzles, the flowable material feeds as evenly as possible. The uniformity of the order and thus also the quality of the manufactured goods strongly depends on the even pressure distribution of the flowable medium over the working width. To do this, however, it is again necessary that the same amount of flowable material is available at every point across the entire working width. The problem is very difficult to solve, especially considering that e.g. B. stencil printing machines can have working widths of more than 5 m. These difficulties become even greater if you only want to apply small amounts of the flowable medium to the web, since here irregularities in the delivery of the flowable medium are much more noticeable.

Es ist Aufgabe der vorliegenden Erfindung, eine Vorrichtung zu schaffen, mit der man das gleichmäßige bzw. regelmäßige Verteilen gewährleisten kann. Erfindungsgemäß wird vorgeschlagen, daß die sich über die gesamte Auftragungsbreite erstreckende Verteileinrichtung aus zumindest einer Platte besteht, in welcher sich ein in diese eingearbeitetes, allseitig umwandetes und durch den mindestens zweiten Plattenteil abgedecktes, symmetrisch verzweigendes Kanalsystem befindet, das eine Eintrittsöffnung hat und dessen Verzweigungsenden in diesen Hohlraum einmünden, daß der Schlitz allseitig abdichtend an einer Schablone oder ohne Verwendung einer Schablone direkt auf der zu beauftragenden Fläche anliegt, und daß dieses abdichtende Anliegen durch eine magnetisierbare bzw. von einem Magnetfeld magnetisierte Masse bewirkt wird.It is an object of the present invention to provide a device with which uniform or regular distribution can be ensured. According to the invention, it is proposed that the distribution device, which extends over the entire width of the application, consists of at least one plate in which there is a symmetrically branching duct system which is incorporated into it and which is converted on all sides and covered by the at least second plate part and which has an inlet opening and its branching ends in open into this cavity, that the slot rests sealingly on all sides against a template or without the use of a template directly on the surface to be applied, and that this sealing contact is brought about by a magnetizable mass or magnetized by a magnetic field.

An sich ist es schon aus der OE-A-267 458 (Seite 1, Zeilen 5 - 7) bekannt, bei Auftragungs-Vorrichtungen die betreffenden Rakel- oder Düsenleisten mit einer magnetisierbaren Masse auszurüsten, so daß die Rakel- oder Düsenleiste durch einen unter der Warenbahn befindlichen Magnetbalken angezogen und damit gegen die zu beauftragende Fläche angepreßt wird. Diese bekannten Vorrichtungen sind jedoch ansonsten anderes im vergleich zur beanspruchten Vorrichtung ausgebildet.As such, it is already known from OE-A-267 458 (page 1, lines 5-7) to equip the doctor blade or nozzle strips in question with a magnetizable mass in application devices, so that the doctor blade or nozzle strip is covered by an under the magnetic web located on the web is attracted and thus pressed against the surface to be commissioned. However, these known devices are otherwise configured differently from the claimed device.

Die Erfindung wird nun anhand der Zeichnungen beispielsweise näher beschrieben. Die Fig. 1 zeigt eine Ausführungsform der Erfindung mit einer Breitenverteilungseinrichtung und Fig. 2 zeigt eine Ausführungsform, bei der die Düsenleiste als Doppelstreichrakel ausgebildet ist. Die Fig. 3 und 4 zeigen eine andere Ausführungsform der Erfindung.The invention will now be described, for example, with reference to the drawings. Fig. 1 shows an embodiment of the invention with a width distribution device and Fig. 2 shows an embodiment in which the nozzle bar is designed as a double doctor blade. 3 and 4 show another embodiment of the invention.

In der Fig. 1 ist eine Ausführungsform der Erfindung dargestellt. Hier ist ein Hauptkörper 1 mit einem wannenförmigen Innenraum 2 vorhanden, an den eine Düsenleiste 3 anschließt. In den Innenraum 2 des Hauptkörpers 1 ist ein Kolben 16 eingesetzt, in dem sich durch fortgesetzte Teilung verzweigende Strömungskanäle 17 vorhanden sind. Ferner trägt der Kolben 16 gegenüber der Wandung des Innenraumes 2 eine Dichtung 18. Das zugeführte Medium wird über die Strömungskanäle 17 über die gesamte Länge des Hauptkörpers 1 verteilt und tritt am unteren Ende in den Innenraum 2 aus und gelangt dort wieder über die Bohrungen 8, den Sammelraum 9 und den Austrittsschlitz 10 in die Warenbahn 5. Auch in diesem Fall ist wieder eine Schablone 11 angedeutet. Zwischen dem Austrittschlitz 10 und der Warenbahn 5 kann noch eine Schablone 11 vorgesehen sein, jedoch ist dies nicht unbedingt notwendig und es kann auch eine austauschbare Gieitieiste 15 vorhanden sein. Mit 19 ist eine Halterung für die erfindungsgemäße Vorrichtung bezeichnet. Um die Einrichtung gegen die Warenbahn 5 zu drücken, trägt die Düsenleiste in ihrem unteren Bereich eine Masse 13 bzw. 14 aus magnetisierbarem Material. Unterhalb der Warenbahn 5 befindet sich dann ein hier nicht dargestellter Magnetbalken, der auf die Masse aus magnetisierbarem Material einwirkt.1 shows an embodiment of the invention. Here there is a main body 1 with a trough-shaped interior 2, to which a nozzle strip 3 connects. In the interior 2 of the main body 1, a piston 16 is inserted, in which branching flow channels 17 are provided by continued division. Furthermore, the piston 16 carries a seal 18 with respect to the wall of the interior 2. The medium supplied is distributed over the entire length of the main body 1 via the flow channels 17 and exits into the interior 2 at the lower end and arrives there again via the bores 8, the collecting space 9 and the outlet slot 10 into the web 5. Also in this case, a template 11 is again indicated. A template 11 can also be provided between the exit slot 10 and the web 5, but this is not absolutely necessary and there can also be an exchangeable slide bar 15. With 19 a holder for the device according to the invention is designated. In order to press the device against the web 5, the nozzle bar carries a mass 13 or 14 made of magnetizable material in its lower region. Below the web 5 there is a magnetic bar, not shown here, which acts on the mass of magnetizable material.

Die Fig. 2 zeigt eine andere Ausführungsform der Erfindung, wo in den Innenraum 2 des Hauptkörpers 1 ein oben offener Kolben 6 eingesetzt ist. Die Düsenleiste 3 ist hier jedoch als Doppelstreichrakel ausgebildet, wobei zwei Rakelklingen 20 vorhanden sind, die einen Austrittsspalt für den Eintritt des Mediums in die Warenbahn 5 bilden. Eine Masse 21 aus magnetisierbarem Material dient wieder zum Anpressen des Austrittes an eine Schablone 11 oder die Warenbahn 5.FIG. 2 shows another embodiment of the invention, where a piston 6 open at the top is inserted into the interior 2 of the main body 1. However, the nozzle bar 3 is designed here as a double doctor blade, two doctor blades 20 being present, which form an outlet gap for the entry of the medium into the web 5. A mass 21 made of magnetizable material is again used to press the outlet against a template 11 or the web 5.

In einer oder in beiden Längswänden des Hauptkörpers 1 sind ebenfalls durch fortgesetzte Teilung sich verzweigende Strömungskanäle 22 eingearbeitet. Wie in Fig. 1 gezeigt, können sowohl im Kolben 16 als auch in der Längswand des Hauptkörpers sich verzweigende Strömungskanäle vorhanden sein. Den Strömungskanälen 22 wird das Medium über eine Zufuhr zugeleitet und dann in die weiteren Strömungskanäle verteilt, wobei dann über einen Kanal 24 das Material in den Innenraum 2 des Hauptkörpers 1 im unteren Bereich des Innenraumes eingebracht wird. Als Abdeckung der Strömungskanäle 22 dient eine ebene Platte 25.In one or in both longitudinal walls of the main body 1, branching flow channels 22 are also incorporated by continued division. As shown in FIG. 1, branching flow channels can be present both in the piston 16 and in the longitudinal wall of the main body. The medium is fed to the flow channels 22 via a feed and then into the further flow channels divides, the material then being introduced into the interior 2 of the main body 1 in the lower region of the interior via a channel 24. A flat plate 25 serves to cover the flow channels 22.

Es ist in dieser Darstellung nicht unbedingt notwendig, daß dem Innenraum 2 das Medium ständig zugeführt wird. Es ist auch möglich, den Innenraum 2 bis zu einer bestimmten Höhe zu füllen, dann den Kolben einzusetzen und mit der Auftragung zu beginnen, bis der Innenraum entleert ist. Dadurch, daß der Kolben sich über die gesamte Länge des Innenraumes erstreckt, wird durch das Gewicht eine Unregelmäßigkeit in der Oberfläche des Mediums ausgeglichen, wobei die Schwimmkolbenleiste nicht nur als Kompensator sondern auch als Steuerimpulsgeber für eine Schaumanlieferung wirken kann.In this illustration, it is not absolutely necessary that the medium 2 is continuously supplied to the interior 2. It is also possible to fill the interior 2 to a certain height, then insert the piston and start the application until the interior is emptied. Because the piston extends over the entire length of the interior, an irregularity in the surface of the medium is compensated for by the weight, the floating piston rod not only acting as a compensator but also as a control pulse generator for a foam delivery.

Die in den Fig. 1 und 2 dargestellte, den Hohlraum 2 bzw. im unteren Bereich 7 begrenzende Leiste 6, 16 muß nicht unbedingt als Schwimmkolben ausgeführt sein, sondern kann, konstruktiv vereinfacht mit dem Körper 1 fest ver- . bunden sein und somit eine feststehende Wandung dieses Hohlraumes 2 darstellen.The bar 6, 16 shown in FIGS. 1 and 2, delimiting the cavity 2 or in the lower region 7, does not necessarily have to be designed as a floating piston, but can, in a structurally simplified manner, be firmly connected to the body 1. be bound and thus represent a fixed wall of this cavity 2.

Gemäß Fig. 3 besitzt die Vorrichtung einen Eingang 38, dem über ein Rohr 35 das aufzutragende Medium zugeführt wird. Der Eingang 38 ist in der Einrichtung mittig angeordnet und schließt an den Kanal 17 an, durch den das Medium in beiden Längsrichtungen der Vorrichtung geführt wird. An diesen Kanal 17 schließt sich ein sich noch weiter verzweigendes Kanalsystem 22 an, wobei die Kanäle dieses Kanalsystems einen immer geringeren Durchmesser erhalten. Am Ende des Kanalsystems 22 sind dann reihenförmig nebeneinanderliegende Ausgänge 30 vorgesehen, die in einen, in seiner Breite der Auftragsbreite entsprechenden Hohlraum 2 münden. Gemäß Fig. 4 endet der Hohlraum 2 in einem Auftragsschlitz 28, dessen Ränder 26, 29 mittels Magnetkraft (Magnetbalken 37) an die Schablone 11 oder die Warenbahn 5 angepreßt werden. Wie man der Fig. 4, die einen Schnitt entlang der Linie A - A ist, entnehmen kann, befindet sich im Hohlraum 2 ein Druckmeßgerät 27.3, the device has an inlet 38, to which the medium to be applied is fed via a pipe 35. The entrance 38 is arranged in the center of the device and connects to the channel 17 through which the medium is guided in both longitudinal directions of the device. This channel 17 is followed by an even more branching channel system 22, the channels of this channel system becoming ever smaller in diameter. At the end of the channel system 22 there are then row-like exits 30 which open into a cavity 2 which corresponds to the width of the application width. 4, the cavity 2 ends in an application slot 28, the edges 26, 29 of which are pressed against the template 11 or the web 5 by means of magnetic force (magnetic bar 37). As can be seen from FIG. 4, which is a section along the line A - A, there is a pressure measuring device 27 in the cavity 2.

Das Kanalsystem 22 ist in die Oberfläche zweier Körper 33, 34 eingearbeitet, wobei die Hälfte jedes Kanales sich jeweils in einem Körper befindet. Die beiden Körper können durch Verklebung, mittels Schrauben oder auf andere Weise miteinander verbunden werden. Das Druckmeßgerät 27 kann die Druckverhältnisse im aufzutragenden Medium bestimmen und gegebenenfalls steuern. Hiebei ist zu beachten, daß die Fördereinrichtung, durch Tachodynamo gesteuert, die pro Flächeneinheit vorgegebene Menge an aufzutragendem Medium liefert, die Druckmeßeinrichtung kontrolliert, den Auftragsdruck qualitätsorientiert und Fehler signalisiert.The channel system 22 is worked into the surface of two bodies 33, 34, half of each channel being located in one body. The two bodies can be connected to one another by gluing, by means of screws or in some other way. The pressure measuring device 27 can determine the pressure conditions in the medium to be applied and, if necessary, control them. It should be noted that the conveyor, controlled by tachodynamo, delivers the amount of medium to be applied per unit area, controls the pressure measuring device, quality-oriented job printing and signals errors.

Im Auftragsbereich kann an einem Rand des Schlitzes 28 eine Rolle 31 eingelegt werden, die vorzugsweise aus magnetisierbarem Material besteht. In diesem Fall wird dann die Rolle 31 ebenso wie der Schlitz 28 durch einen Magnetbalken 37 an die Schablone 11 oder die Warenbahn 5 angepreßt. Durch die Rolle 31 wird eine zusätzliche Auftragsfunktion bewirkt. Außerdem kann im Auftragsbereich eine zusätzliche Leiste 32 aus magnetisierbarem Material vorgesehen sein, wobei diese magnetisierbare Leiste 32 zur Ausübung der Schlitzabdichtungskraft, vorzugsweise in Bewegungsrichtung gesehen hinter dem Schlitz 28, angeordnet ist.In the application area, a roller 31 can be inserted at an edge of the slot 28, which preferably consists of magnetizable material. In this case, the roller 31 and the slot 28 are then pressed against the template 11 or the web 5 by a magnetic bar 37. An additional order function is brought about by the roller 31. In addition, an additional bar 32 made of magnetizable material can be provided in the application area, this magnetizable bar 32 being arranged behind the slot 28 for exerting the slot sealing force, preferably in the direction of movement.

Arbeitet man mit niedrigen Geschwindigkeiten, so hält man den Schlitz 28 schmal, bei hohen Geschwindigkeiten kann der Schlitz relativ breit sein. Es ist auch möglich, die Anpassung an die Geschwindigkeit mittels des Druckes zu erreichen, und zwar ist bei niedriger Geschwindigkeit der Druck niedrig und bei hoher Geschwindigkeit der Druck hoch. In der Vorrichtung kann eine Steuerung für die Zuflußregelung vorgesehen sein, die ausgehend von einer Einstellbasis bei zunehmender Arbeitsgeschwindigkeit die Zuflußmenge und/oder den Arbeitsdruck erhöht, und bei Maschinenstillstand auf Null setzt.If you work at low speeds, you keep the slot 28 narrow, at high speeds the slot can be relatively wide. It is also possible to achieve the adaptation to the speed by means of the pressure, namely the pressure is low at low speed and the pressure is high at high speed. A control for the inflow control can be provided in the device, which increases the inflow quantity and / or the working pressure on the basis of a setting base with increasing working speed, and sets it to zero when the machine is at a standstill.

Die Abdichtung des Schlitzes 28 kann über Leisten erfolgen. Eine andere Möglichkeit sind elastische Klingen.The slot 28 can be sealed by strips. Another option is elastic blades.

Um die Auftragsbreite der Vorrichtung begrenzen zu können, sind Einschubprofile 37 vorhanden, die je nach ihrer Stellung einen oder mehrere Ausgänge 30 verschließen. Es besteht die Möglichkeit, die gesamte Vorrichtung um eine Achse 36 zu verschwenken, und so von der Schablone 11 bzw. der Warenbahn 5 abzuheben.In order to be able to limit the application width of the device, slide-in profiles 37 are present which, depending on their position, close one or more outputs 30. There is the possibility of pivoting the entire device about an axis 36 and thus lifting it off the template 11 or the web 5.

Die vorliegende Erfindung kombiniert eine Reihe von Maßnahmen, durch die es möglich ist, auch bei variierender Arbeitsgeschwindigkeit ein fließfähiges Medium auf ebenen Flächen, Bahnen, Walzen oder dgl. so aufzutragen, daß keine Ungleichmäßigkeiten auftreten. Es wird nur die effektiv verbrauchte Menge an Medium bereitgestellt, so daß bei Unterbrechung oder Beendigung des Auftragsvorganges nur sehr geringe Verluste an Medium entstehen.The present invention combines a number of measures by which it is possible to apply a flowable medium to flat surfaces, webs, rollers or the like, even at varying working speeds, in such a way that no unevenness occurs. Only the effectively used amount of medium is made available, so that only very small losses of medium occur when the application process is interrupted or ended.

Die Erfindung ist auf die dargestellten Beispiele nicht beschränkt. So kann das Verzweigungssystem auch in anderer Weise ausgebildet sein, z. B. so,daß mehrere Platten übereinandergeschichtet werden, wobei jede dieser Platten dann eine Verzweigungsstufe trägt; d.h., in den Platten sind Kanäle eingearbeitet, die dann über eine Bohrung mit den Kanälen in der darunterliegenden Platte verbunden sind.The invention is not restricted to the examples shown. So the branching system can also be designed in a different way, for. B. so that several plates are stacked, each of these plates then carrying a branching stage; i.e., channels are incorporated in the plates, which are then connected to the channels in the underlying plate via a hole.

Zusätzlich zu den bereits beschriebenen Düsenrandausbildungen, nämlich zwei elastische Dichtlamellen, eine Dichtlamelle und eine flächig aufliegende, einen höheren Anpreßdruck ausübende Dichtleiste und die flächigen Dichtleistungen, können anstelle der Dichtleisten auch zwei Rollen vorgesehen sein oder es wird eine der flächigen Dichtleisten durch eine Rolle ersetzt. Für die Direktauftragung ohne Schablone können die Auflageflächen der beiden Leisten sehr breit gemacht werden, wobei sich durch die breiten Dichtflächen ein geringer Flächendruck ergibt, was insbesondere für eine flauschige Ware von Vorteil ist. Es ist auch möglich, nur die vordere Leiste sehr breit auszuführen, die hintere jedoch schmal und mit einer Abrißkante, was insbesondere für Beschichtungen interessant ist.In addition to the nozzle edge designs already described, namely two elastic sealing lamellae, one sealing lamella and a flat sealing strip that exerts a higher contact pressure and the flat sealing performance, two rollers can also be provided instead of the sealing strips, or one of the flat sealing strips can be replaced by a roller. For direct application without a template, the contact surfaces of the two strips can be made very wide, with the wide sealing surfaces resulting in a low surface pressure, which is particularly advantageous for fluffy goods. It is also possible to use only the front one The strip is very wide, but the rear one is narrow and has a tear-off edge, which is particularly interesting for coatings.

Claims (13)

1. An apparatus for applying a flowable medium, subjected to pressure in a closed system within the apparatus up to the region of application, to planar surfaces (5), webs, rolls and the like over an optional width with or without the use of templates (11), wherein a closed cavity (2) extending across the entire region of application is connected to e device (22) distributing the flowable medium uniformly over the width of application and opens into a collecting chamber (9) by way of outlet openings (8), and wherein the boundary walls of the collecting chamber (9) merge into a slot (10, 20, 28) forming the region of application, characterised in that the distributing device (22) extending across the entire width of application comprises at least one plate (1, 25, 33, 34) in which is incorporated e passage system (22) which is enclosed on all sides and covered by the at least second plate portion (25, 23) and which branches symmetrically by continuous division and has an inlet opening (23, 38) and whose branch ends (30) open into the said cavity (2), that the slot (10, 20, 28), sealing on ell sides, abuts against a template or, without the use of a template, directly against the surface (5) to which the medium is to be applied, and that this sealing abutment is effected by a mass (13, 14, 21, 26) which is magnetizable or which is magnetized by a megnetic field.
2. An apparatus as claimed in claim 1, characterised in that the apparatus (axis 36) is pivotably mounted,
3. An apparatus as claimed in claim 1 or 2, characterised in that, for the purpose of exerting the slot sealing force, the magnetizable material (26) is disposed preferably only on one side of the slot (28) in the region of application, namely behind the slot (28) as viewed in the direction of movement.
4. An apparatus as claimed in one of the preceding claims, characterised in that a pressure meter (27) is fitted in the cavity (2).
5. An apparatus as claimed in one of the preceding claims, characterised in that a pressure meter (27) is disposed in the outlet slot (28).
6. An apparatus as claimed in one of the preceding claims, characterised in that the pressure meter (27) is connected to the pressure-generating or pressure-determining feed device.
7. An apparatus as claimed in one of the preceding claims, characterised in that the region of application (28) is in the form of a double coating doctor blade.
8. An apparatus as claimed in one of the preceding claims, characterised in that the outer edges of the slot (10, 28) are formed by preferably planar sealing strips.
9. An apparatus as claimed in one of the preceding claims, characterised in that the edges of the slot (28) are formed by a sealing lamella (29) and flatly abutting sealing strip (26) exerting a high pressure.
10. An apparatus as claimed in one of the preceding claims, characterised in that the edges of the slot (28) are formed by a sealing lamella (29) and a roller (31).
11. An apparatus as claimed in one of the preceding claims, characterised in that the outer edges of the slot are formed, by resilient blades.
12. An apparatus as claimed in one of the preceding claims, characterised in that a roller (31) made from preferably magnetizable material is disposed in the region of application within the slot (28).
13. An apparatus as claimed in one of the preceding claims, characterised in that the edges of the slot are formed by two rollers serving as sealing and pressure elements.
EP84111161A 1983-10-07 1984-09-19 Apparatus for evenly distributing a liquid flow over a given width Expired - Lifetime EP0147536B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT358583A AT379526B (en) 1983-10-07 1983-10-07 EQUIPMENT FOR EVEN OR REGULAR DISTRIBUTION OF FLOWABLE MEDIA IN PRESET WIDTH
AT3585/83 1983-10-07
AT119384A AT382091B (en) 1984-04-09 1984-04-09 DEVICE FOR APPLYING A MEDIUM
AT1193/84 1984-04-19

Publications (3)

Publication Number Publication Date
EP0147536A2 EP0147536A2 (en) 1985-07-10
EP0147536A3 EP0147536A3 (en) 1985-10-16
EP0147536B1 true EP0147536B1 (en) 1990-02-07

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EP84111161A Expired - Lifetime EP0147536B1 (en) 1983-10-07 1984-09-19 Apparatus for evenly distributing a liquid flow over a given width

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US (1) US4665723A (en)
EP (1) EP0147536B1 (en)
DE (1) DE3481293D1 (en)

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US4665723A (en) 1987-05-19
EP0147536A2 (en) 1985-07-10
DE3481293D1 (en) 1990-03-15
EP0147536A3 (en) 1985-10-16

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