EP2740544B1 - Device for applying in particular pasty plastic material onto a surface - Google Patents

Device for applying in particular pasty plastic material onto a surface Download PDF

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Publication number
EP2740544B1
EP2740544B1 EP13005741.7A EP13005741A EP2740544B1 EP 2740544 B1 EP2740544 B1 EP 2740544B1 EP 13005741 A EP13005741 A EP 13005741A EP 2740544 B1 EP2740544 B1 EP 2740544B1
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Prior art keywords
opening
liquid
wall element
connection
flange
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EP13005741.7A
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German (de)
French (fr)
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EP2740544A1 (en
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Udo Tartler
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00516—Shape or geometry of the outlet orifice or the outlet element

Definitions

  • the present invention relates to a device for dispensing liquid as a wide jet, with an inlet opening for the liquid and with an outlet opening which is in line connection with the inlet opening and has an opening cross section which is wider than high.
  • Dispensing liquid as a wide jet is often required in technology. Only, for example, when manufacturing component surfaces or flat semi-finished products made of fiber-reinforced plastic is, for example, not yet (completely) cross-linked, still liquid plastic passed through a hose or pipe to a manufacturing device where the fiber reinforcement is already on a molding surface. The plastic is then to be applied to the molding surface as evenly and quickly as possible before, for example, a mold counter surface is lowered onto the molding surface, which (in the appropriately dimensioned space) presses the plastic with the fiber reinforcement into a component of uniform thickness. For example, bonnets made of CFRP are basically produced in this way.
  • the even application must take place in a limited time, i.e. as quickly as possible, because there is only a limited time until the plastic hardens (which of course should only be applied after the application): for example, with some plastics (at least) two components are mixed together , The mixture then cross-links and hardens.
  • the application is therefore preferably carried out as late as possible after mixing - for example immediately after the plastic has been passed through a tubular line section (mixer) with shaped elements (swirling elements) in its interior, which deflect and deflect the fluid flowing through in various ways, accumulate locally, generate turbulence and / or swirl and mix.
  • supply lines lead into this mixer, in particular in the number of fluid components from which the plastic is to be mixed.
  • the uniformly flat application of the plastic in this example - but also of liquids in any technical context whatsoever, be it by a robot or by hand - can be accomplished particularly well using a device for dispensing the liquid as a wide jet.
  • the discharge opening of the device, from which the wide jet preferably emerges with a uniform volume flow, is then preferably guided over the surface at a uniform speed, the guide direction being perpendicular to the width of the jet. In this way, the entire area is swept over (as with a lawn mower), with one trace of application as flush as possible with an adjacent one.
  • the device So that the application takes place as evenly as possible even within an application track, it is necessary for the device to have a jet with a uniform width distributed volume flow generated. This is directly or indirectly dependent on a large number of fluid mechanical parameters: directly, for example, from the liquid pressure across the width of the discharge opening; at least indirectly, for example, of cross-sectional areas and contours and of the direction of the line connection between the liquid supply line and the discharge opening and of the opening contour of the discharge opening and the viscosity of the liquid and the temperature.
  • US 6 394 369 B2 slot-shaped nozzles are known for a wide variety of applications.
  • US 6 394 369 B2 describes a system of interchangeable nozzle-shaped wall elements.
  • the present invention is based on the object of providing a device for dispensing liquid as a wide jet with improved uniformity of the volume flow over its width, specifically adaptable to various fluid mechanical parameters of the liquid flow in the device.
  • a device serves to dispense liquid as a wide jet.
  • it has a feed opening to convey the liquid through the feed opening into the device, and a discharge opening which is in line connection with the feed opening in the device.
  • the discharge opening has an opening cross section which is wider than it is high, so as to generate the liquid jet as a wide jet when dispensing liquid from the discharge opening.
  • the dispensing opening is formed in a wall element which can be removed from the device and in particular can also be attached to the device again.
  • the dispensing opening can be exchanged for another dispensing opening, in particular with a different contour, which can then be adapted to a different flow situation and / or technical task when dispensing liquid as a wide jet.
  • the dispensing opening can be slit-shaped, i.e. wider than it is high, the gap height in the middle of the gap (viewed across its width) being the smallest, and from there center symmetrically enlarged on both sides to the ends of the column.
  • the pressure which drops slightly towards these edges is taken into account in the liquid passed through the device: there, at the ends, the liquid under lower pressure becomes a lower flow resistance in the form of the larger flow cross section of the there opposite larger gap heights.
  • wall element which is also for attachment to the device set up, for dispensing another one
  • another wall element which is also for attachment to the device set up, for dispensing another one
  • the discharge opening be slit-shaped with a constant slit height over the slit width.
  • the dispensing opening for dispensing another liquid can be formed by a row, for example, arranged in a straight line, for example circular bores, all of which are the same or the same across the width of this dispensing opening area for example, have a larger diameter towards the edge.
  • the discharge opening is formed in yet another wall element in such a way that the device generates a jet with a deliberately unevenly distributed volume flow over its width.
  • the wall element with the delivery opening can be removed, which particularly preferably makes it possible to provide a device system with several wall elements, also with different delivery openings - or even initially without delivery opening, so that the user with his Manufacturing possibilities in such a wall element without a dispensing opening, for example, only mills or punches a dispensing opening according to its requirements.
  • the device By replacing the device, it can therefore be adapted to various fluidic tasks, but it can also be serviced more quickly, for example by replacing a dirty and / or clogged discharge opening with a new, clean one.
  • the device and also the wall element therein are preferably made of metal and / or plastic.
  • the wall element can also consist of a material different from the rest of the device, for example of plastic, if the rest of the device consists (essentially) of metal.
  • the wall element attached to the device, covers an opening in the device.
  • the wall element adjoins the device in a liquid-tight manner on a circumference around the flange opening, so that the line connection of the discharge opening with the supply opening to the outside is liquid-tight in the device, so that the liquid only enters the device through the supply opening and through the discharge opening again can leak.
  • the wall element has at least one connecting element which interacts positively with a connecting counter-element on the device (in particular on the outside of the device) when the wall element is attached to the device.
  • the device preferably has two parallel grooves as connection counter-elements (the flange opening being arranged between the grooves), and the wall element has projection structures as connection elements, for example webs or barbs or swab tail structures, at least one of which engages in one of the grooves and the wall element is pressed liquid-tight against the circumference of the flange opening stops when the wall element is attached to the device.
  • the wall element is designed to be slidable laterally from the device for removal.
  • the flange opening is also preferably wider than high (with a corresponding orientation of height and width).
  • the flange opening is bounded by a flat edge against which a flat inner surface of the wall element bears in a liquid-tight manner when the wall element is attached to the device. This can ensure liquid-tightness, even if the wall element is designed to be laterally displaceable for removal from the device.
  • the device is preferably a hand tool, the feed opening preferably being set up for connecting a flexible feed line.
  • the device 2 according to 1 to 6 is used to apply cross-linking, still liquid plastic (not shown) to a surface (not shown).
  • the device 2 has a tubular feed opening 4 for the plastic (with a connecting piece 6 for a feed hose (not shown) in order to form a tool which can be moved freely by hand or by means of a robot because of the flexibility of the feed hose) and a discharge opening 8 for the plastic.
  • the feed opening 4 and the discharge opening 8 are connected to the device 2 along a straight central axis 10 in line connection 12.
  • the tubular feed line 4 is circular cylindrical tubular around the straight central axis 10.
  • the discharge opening 8 is (in Fig. 6 recognizable) slit-shaped, i.e. wider than high, the gap height HM being lowest in the middle of the gap (viewed over its width B), and increasing from there to the ends of the gap symmetrically on both sides.
  • the pressure which drops slightly towards these edges is passed through the device 2 Liquid taken into account: at the ends of the liquid under lower pressure there is a lower flow resistance in the form of the larger flow cross section of the larger gap heights HE.
  • the wide jet of the liquid emerges from the device 2 with a uniform volume flow over its width.
  • the outlet opening 8 is arranged in a wall element 14, which can be removed from the device 2 and exchanged for another wall element, which in geometry and Dimensions of the outlet opening 8 can be adapted precisely to the liquid now to be dispensed with the device 2 and also to the other flow and boundary conditions.
  • the wall element 14 and any other wall element with corresponding connection structures can therefore be attached to the device 2 and then, when attached, covers a flange opening 16 in the device 2. Closes on a circumference around the flange opening 16 the wall element 14 to the device in a liquid-tight manner, so that the line connection 12 of the discharge opening 8 with the supply opening 4 in the device 2 is designed to be liquid-tight to the outside.
  • the flange opening 16 also has an opening cross section which is wider than high.
  • the edge 18 of the flange opening 16 is rectangular, the rectangle 18 which the edge 18 describes has a height HF which is smaller than its width BF.
  • the corners 20 of the rectangle 14 are rounded. This makes production easier, for example, as an injection molded component - and cleaning if necessary. It also counteracts "dead water" areas in the corners, i.e. areas in sharp-edged corners, for example, where adhesion would reduce the flow and thus the exchange and rapid transport of the liquid - which, for example, can lead to premature crosslinking if it does the liquid is cross-linking plastic.
  • the edge 18 of the flange opening 16 is flat - that is, it lies in an (imaginary) plane (with a view of Fig. 4 recognizable as straight line 22).
  • a flat inner surface 24 of the wall element 14 bears against the flat edge 18 in a liquid-tight manner when the wall element 14 (as shown) is attached to the device 2.
  • the wall element 14 can be displaced in a direction of the plane 22 with respect to the device 2 and can be removed from the device 2 - namely designed to be pushed off from the device 2 overall: that As a connecting element, wall element 14 has two parallel webs 26, each of which has a form-fitting connection with a connecting counter-element in the form of a groove 28 (parallel to one another on the outside on the Device 2) cooperate when the wall element 14 is attached to the device 2.
  • the flange opening 16 is arranged between the grooves.
  • the webs 26 are projection structures whose position and dimension are coordinated with those of the grooves 28 and the sealing surfaces 18, 24 such that they each engage in one of the grooves 28 and hold the wall element 14 in a liquid-tight manner against the circumference 18 of the flange opening 16 when the wall element 14 is attached to the device 2.
  • the supply opening 4 has the hose connection 6 in the form of a circular-cylindrical outer contour with a circumferential thickening 6, which is in a suitable coupling counterpart (not shown), namely simply and simply insert the hose end (not shown) of the supply hose and have it fastened there, for example with a quick-release clamp (not shown), in a force-locking and frictionally locking manner.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung, zum Abgeben von Flüssigkeit als breitem Strahl, mit einer Zuleitungsöffnung für die Flüssigkeit und mit einer Abgabeöffnung, die in Leitungsverbindung mit der Zuleitungsöffnung steht und einen Öffnungsquerschnitt aufweist, der breiter ist als hoch.The present invention relates to a device for dispensing liquid as a wide jet, with an inlet opening for the liquid and with an outlet opening which is in line connection with the inlet opening and has an opening cross section which is wider than high.

Das Abgeben von Flüssigkeit als breitem Strahl ist in der Technik vielfach erforderlich. Nur zum Beispiel beim Herstellen von Bauteilflächen oder flachen Halbzeugen aus faserverstärktem Kunststoff wird zum Beispiel noch nicht (vollständig) vernetzter, noch flüssiger Kunststoff durch eine Schlauch- oder Rohrleitung zu einer Herstellungsvorrichtung geleitet, wo die Faserverstärkung bereits auf einer Formfläche liegt. Der Kunststoff ist dann möglichst gleichmäßig und schnell auf die Formfläche aufzutragen, bevor sich dann zum Beispiel eine Formgegenfläche auf die Formfläche absenkt, die (im entsprechend dimensionierten Zwischenraum) den Kunststoff mit der Faserverstärkung zu einem Bauteil gleichmäßiger Dicke verpresst. Zum Beispiel Motorhauben aus CFK werden prinzipiell auf diese Weise hergestellt.Dispensing liquid as a wide jet is often required in technology. Only, for example, when manufacturing component surfaces or flat semi-finished products made of fiber-reinforced plastic is, for example, not yet (completely) cross-linked, still liquid plastic passed through a hose or pipe to a manufacturing device where the fiber reinforcement is already on a molding surface. The plastic is then to be applied to the molding surface as evenly and quickly as possible before, for example, a mold counter surface is lowered onto the molding surface, which (in the appropriately dimensioned space) presses the plastic with the fiber reinforcement into a component of uniform thickness. For example, bonnets made of CFRP are basically produced in this way.

Das gleichmäßige Auftragen muss in begrenzter Zeit, also möglichst schnell geschehen, weil bis zum Aushärten des Kunststoffs (das selbstverständlich erst nach dem Auftragen erfolgen soll) nur eine begrenzte Zeit zur Verfügung steht: bei einigen Kunststoffen werden zum Beispiel (mindestens) zwei Komponenten miteinander vermischt. Das Gemisch vernetzt dann und härtet aus. Das Aufbringen erfolgt daher bevorzugt möglichst spät nach dem Mischen - zum Beispiel unmittelbar nach dem Durchleiten des Kunststoffs durch einen rohrförmigen Leitungsabschnitt (Mischer) mit Formelementen (Verwirbelungselementen) in seinem Innenraum, die hindurchströmendes Fluid verschiedentlich um- und ablenken, lokal stauen, Turbulenzen erzeugen und/oder verwirbeln und somit durchmischen. In diesen Mischer hinein führen bekanntlich Zuleitungen insbesondere in der Anzahl der fluiden Komponenten, aus denen der Kunststoff zusammenzumischen ist.The even application must take place in a limited time, i.e. as quickly as possible, because there is only a limited time until the plastic hardens (which of course should only be applied after the application): for example, with some plastics (at least) two components are mixed together , The mixture then cross-links and hardens. The application is therefore preferably carried out as late as possible after mixing - for example immediately after the plastic has been passed through a tubular line section (mixer) with shaped elements (swirling elements) in its interior, which deflect and deflect the fluid flowing through in various ways, accumulate locally, generate turbulence and / or swirl and mix. As is known, supply lines lead into this mixer, in particular in the number of fluid components from which the plastic is to be mixed.

Das gleichmäßig flächige Auftragen des Kunststoffs in diesem Beispiel - aber auch von Flüssigkeiten überhaupt in welchem technischen Zusammenhang auch immer, sei es durch einen Roboter oder von Hand - lässt sich bekanntlich besonders gut mittels einer Vorrichtung zum Abgeben der Flüssigkeit als breitem Strahl bewerkstelligen. Die Abgabeöffnung der Vorrichtung, aus der der breite Strahl vorzugsweise mit gleichmäßigem Volumenstrom austritt, wird dann vorzugsweise mit gleichmäßiger Geschwindigkeit über die Fläche geführt, die Führungsrichtung rechtwinklig zur Breite des Strahls. Auf diese Weise wird (wie mit einem Rasenmäher der zu mähende Rasen) die gesamte Fläche überstrichen, mit einer Auftragungsspur möglichst bündig an einer benachbarten.The uniformly flat application of the plastic in this example - but also of liquids in any technical context whatsoever, be it by a robot or by hand - can be accomplished particularly well using a device for dispensing the liquid as a wide jet. The discharge opening of the device, from which the wide jet preferably emerges with a uniform volume flow, is then preferably guided over the surface at a uniform speed, the guide direction being perpendicular to the width of the jet. In this way, the entire area is swept over (as with a lawn mower), with one trace of application as flush as possible with an adjacent one.

Damit auch innerhalb einer Auftragungsspur das Auftragen möglichst gleichmäßig erfolgt, ist es erforderlich, dass die Vorrichtung einen Strahl mit über seine Breite gleichmäßig verteiltem Volumenstrom erzeugt. Dies ist von einer Vielzahl strömungsmechanischer Parameter unmittelbar oder mittelbar abhängig: unmittelbar zum Beispiel vom Flüssigkeitsdruck über die Breite der Abgabeöffnung; mindestens mittelbar zum Beispiel von Querschnittsflächen und -konturen und vom Richtungsverlauf der Leitungsverbindung zwischen der Flüssigkeitszuleitung und der Abgabeöffnung sowie von der Öffnungskontur der Abgabeöffnung und von der Viskosität der Flüssigkeit und der Temperatur.So that the application takes place as evenly as possible even within an application track, it is necessary for the device to have a jet with a uniform width distributed volume flow generated. This is directly or indirectly dependent on a large number of fluid mechanical parameters: directly, for example, from the liquid pressure across the width of the discharge opening; at least indirectly, for example, of cross-sectional areas and contours and of the direction of the line connection between the liquid supply line and the discharge opening and of the opening contour of the discharge opening and the viscosity of the liquid and the temperature.

Aus dem Stand der Technik US 5 265 383 A , EP 1 210 985 A1 , US 6 394 369 B2 sind schlitzförmige Düsen für verschiedenste Anwendungsgebiete bekannt. US 6 394 369 B2 beschreibt ein System austauschbarer düsenförmiger Wandungselemente.From the state of the art US 5 265 383 A . EP 1 210 985 A1 . US 6 394 369 B2 slot-shaped nozzles are known for a wide variety of applications. US 6 394 369 B2 describes a system of interchangeable nozzle-shaped wall elements.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung zum Abgeben von Flüssigkeit als breitem Strahl zu schaffen mit verbesserter Gleichmäßigkeit des Volumenstroms über seine Breite und zwar anpassbar an verschiedene strömungsmechanische Parameter der Flüssigkeitsströmung in der Vorrichtung.The present invention is based on the object of providing a device for dispensing liquid as a wide jet with improved uniformity of the volume flow over its width, specifically adaptable to various fluid mechanical parameters of the liquid flow in the device.

Diese Aufgabe wird von einer Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausgestaltungen sind in den Unteransprüchen angegeben.This object is achieved by a device with the features of claim 1. Preferred configurations are specified in the subclaims.

Eine erfindungsgemäße Vorrichtung dient zum Abgeben von Flüssigkeit als breitem Strahl. Dazu hat sie eine Zuleitungsöffnung, um die Flüssigkeit durch die Zuleitungsöffnung in die Vorrichtung zu fördern, und eine Abgabeöffnung, die in der Vorrichtung in Leitungsverbindung mit der Zuleitungsöffnung steht. Die Abgabeöffnung weist einen Öffnungsquerschnitt auf, der breiter ist als hoch, um so beim Abgeben von Flüssigkeit aus der Abgabeöffnung den Flüssigkeitsstrahl als breiten Strahl zu erzeugen.A device according to the invention serves to dispense liquid as a wide jet. For this purpose, it has a feed opening to convey the liquid through the feed opening into the device, and a discharge opening which is in line connection with the feed opening in the device. The discharge opening has an opening cross section which is wider than it is high, so as to generate the liquid jet as a wide jet when dispensing liquid from the discharge opening.

Erfindungsgemäß ist die Abgabeöffnung in einem Wandungselement ausgebildet, das sich von der Vorrichtung abnehmen und insbesondere auch wieder an die Vorrichtung ansetzen lässt. So ist mit dem Wandungselement die Abgabeöffnung gegen eine andere Abgabeöffnung, insbesondere mit einer anderen Kontur, austauschbar, die dann an eine jeweilige andere Strömungssituation und/oder technische Aufgabe beim Abgeben von Flüssigkeit als breitem Strahl angepasst sein kann.According to the invention, the dispensing opening is formed in a wall element which can be removed from the device and in particular can also be attached to the device again. Thus, with the wall element, the dispensing opening can be exchanged for another dispensing opening, in particular with a different contour, which can then be adapted to a different flow situation and / or technical task when dispensing liquid as a wide jet.

So kann in einem Wandungselement für das Abgeben einer bestimmten zum Beispiel relativ hoch viskosen Flüssigkeit die Abgabeöffnung schlitzformig sein, also breiter als hoch, wobei die Spalthöhe in der Mitte der Spalts (über seine Breite betrachtet) am geringsten ist, und sich von dort mittensymmetrisch nach beiden Seiten zu den Spaltenden vergrößert. So wird dem zu diesen Rändern hin leicht abfallenden Druck (aufgrund dort in den Randbereichen größerer Strömungswiderstände) in der durch die Vorrichtung geleiteten Flüssigkeit Rechnung getragen: dort an den Enden wird der dort unter geringerem Druck stehenden Flüssigkeit ein geringerer Strömungswiderstand in Gestalt des größeren Strömungsquerschnitts der dort größeren Spalthöhen entgegengesetzt. Insgesamt ergibt sich daraus, dass der breite Strahl der (zum Beispiel zähflüssigen) Flüssigkeit mit über seine Breite gleichmäßigem Volumenstrom aus der Vorrichtung austritt.For example, in a wall element for dispensing a certain, for example, relatively highly viscous liquid, the dispensing opening can be slit-shaped, i.e. wider than it is high, the gap height in the middle of the gap (viewed across its width) being the smallest, and from there center symmetrically enlarged on both sides to the ends of the column. Thus, the pressure which drops slightly towards these edges (due to the greater flow resistances in the edge regions) is taken into account in the liquid passed through the device: there, at the ends, the liquid under lower pressure becomes a lower flow resistance in the form of the larger flow cross section of the there opposite larger gap heights. Overall, it follows that the broad jet of the (for example viscous) liquid emerges from the device with a volume flow that is uniform over its width.

In einem anderen Wandungselement, das ebenfalls für das Ansetzen an die Vorrichtung eingerichtet ist, kann für das Abgeben einer anderen zum Beispiel wie Wasser dünnflüssigenIn another wall element, which is also for attachment to the device set up, for dispensing another one can be thin like water, for example

Flüssigkeit die Abgabeöffnung schlitzförmig mit über die Schlitzbreite konstanter Schlitzhöhe sein. In noch einem anderen Wandungselement, das ebenfalls für das Ansetzen an die Vorrichtung eingerichtet ist, kann für das Abgeben einer anderen Flüssigkeit die Abgabeöffnung von einer zum Beispiel geradlinig angeordneten Reihe zum Beispiel kreisrunder Bohrungen gebildet sein, die über die Breite dieses Abgabeöffnungsbereichs alle einen gleichen oder zum Beispiel zum Rand hin einen größeren Durchmesser aufweisen. Für einige technische Aufgaben ist es aber auch denkbar, dass die Abgabeöffnung in noch einem anderen Wandungselement so ausgebildet ist, dass die Vorrichtung einen Strahl mit über seine Breite bewusst ungleichmäßig verteiltem Volumenstrom erzeugt. Wesentlich für die Erfindung ist bei aller Vielfalt der Gestaltmöglichkeiten der Abgabeöffnungs-Kontur aber die Abnehmbarkeit des Wandungselements mit der Abgabeöffnung, welche besonders bevorzugt ein Vorrichtungssystem bereitzustellen ermöglicht mit mehreren Wandungselementen auch mit verschiedenen Abgabeöffnungen - oder sogar zunächst ohne Abgabeöffnung, so dass der Anwender mit seinen fertigungstechnischen Möglichkeiten in ein solches Wandungselement ohne Abgabeöffnung eine Abgabeöffnung nach seinen Erfordernissen erst zum Beispiel hinein fräst oder stanzt. Durch das Auswechseln kann die Vorrichtung also an verschiedene strömungstechnische Aufgaben angepasst werden, aber auch schneller gewartet werden, indem zum Beispiel eine verdreckte und/oder verstopfte Abgabeöffnung gegen eine neue saubere ausgetauscht wird.Liquid the discharge opening be slit-shaped with a constant slit height over the slit width. In yet another wall element, which is also set up for attachment to the device, the dispensing opening for dispensing another liquid can be formed by a row, for example, arranged in a straight line, for example circular bores, all of which are the same or the same across the width of this dispensing opening area for example, have a larger diameter towards the edge. For some technical tasks, however, it is also conceivable that the discharge opening is formed in yet another wall element in such a way that the device generates a jet with a deliberately unevenly distributed volume flow over its width. With all the variety of design options of the delivery opening contour, it is essential for the invention, however, that the wall element with the delivery opening can be removed, which particularly preferably makes it possible to provide a device system with several wall elements, also with different delivery openings - or even initially without delivery opening, so that the user with his Manufacturing possibilities in such a wall element without a dispensing opening, for example, only mills or punches a dispensing opening according to its requirements. By replacing the device, it can therefore be adapted to various fluidic tasks, but it can also be serviced more quickly, for example by replacing a dirty and / or clogged discharge opening with a new, clean one.

Die Vorrichtung und darin auch das Wandungselement sind vorzugsweise aus Metall und/oder Kunststoff. Das Wandungselement kann auch aus einem von der übrigen Vorrichtung verschiedenen Werkstoff bestehen, zum Beispiel aus Kunststoff, wenn die übrige Vorrichtung (im Wesentlichen) aus Metall besteht.The device and also the wall element therein are preferably made of metal and / or plastic. The wall element can also consist of a material different from the rest of the device, for example of plastic, if the rest of the device consists (essentially) of metal.

Insbesondere überdeckt das Wandungselement, angesetzt an die Vorrichtung, eine Öffnung in der Vorrichtung. Dabei schließt das Wandungselement auf einem Umfang um die Flanschöffnung flüssigkeitsdicht an die Vorrichtung an, so dass die Leitungsverbindung der Abgabeöffnung mit der Zuleitungsöffnung nach außen flüssigkeitsdicht in der Vorrichtung ausgebildet ist, damit die Flüssigkeit nur durch die Zuleitungsöffnung in die Vorrichtung ein und durch die Abgabeöffnung wieder austreten kann.In particular, the wall element, attached to the device, covers an opening in the device. The wall element adjoins the device in a liquid-tight manner on a circumference around the flange opening, so that the line connection of the discharge opening with the supply opening to the outside is liquid-tight in the device, so that the liquid only enters the device through the supply opening and through the discharge opening again can leak.

Erfindungsgemäß hat das Wandungselement mindestens ein Verbindungselement, das formschlüssig mit einem Verbindungsgegenelement an der Vorrichtung (insbesondere außenseitig auf der Vorrichtung) zusammenwirkt, wenn das Wandungselement an die Vorrichtung angesetzt ist. Vorzugsweise weist die Vorrichtung als Verbindungsgegenelemente zwei parallele Nuten auf (wobei die Flanschöffnung zwischen den Nuten angeordnet ist), und das Wandungselement hat als Verbindungselemente Vorsprungstrukturen, zum Beispiel Stege oder Widerhaken oder Schwabenschwanzstrukturen, von denen mindestens eine jeweils in eine der Nuten eingreift und das Wandungselement flüssigkeitsdicht gegen den Umfang der Flanschöffnung gedrückt hält, wenn das Wandungselement an die Vorrichtung angesetzt ist. Erfindungsgemäß ist das Wandungselement zum Abnehmen seitlich von der Vorrichtung abschiebbar ausgebildet.According to the invention, the wall element has at least one connecting element which interacts positively with a connecting counter-element on the device (in particular on the outside of the device) when the wall element is attached to the device. The device preferably has two parallel grooves as connection counter-elements (the flange opening being arranged between the grooves), and the wall element has projection structures as connection elements, for example webs or barbs or swab tail structures, at least one of which engages in one of the grooves and the wall element is pressed liquid-tight against the circumference of the flange opening stops when the wall element is attached to the device. According to the invention, the wall element is designed to be slidable laterally from the device for removal.

Um der Gestalt der Abgabeöffnung platzsparend angepasst zu sein, ist auch die Flanschöffnung vorzugsweise breiter als hoch (mit entsprechender Orientierung von Höhe und Breite). Die Flanschöffnung ist dabei von einem ebenen Rand umgrenzt, gegen den eine ebene Innenfläche des Wandungselements flüssigkeitsdicht anliegt, wenn das Wandungselement an die Vorrichtung angesetzt ist. Dies kann die Flüssigkeitsdichtigkeit sicherstellen, auch wenn das Wandungselement zum Abnehmen von der Vorrichtung seitlich abschiebbar ausgebildet ist.In order to adapt to the shape of the delivery opening in a space-saving manner, the flange opening is also preferably wider than high (with a corresponding orientation of height and width). The flange opening is bounded by a flat edge against which a flat inner surface of the wall element bears in a liquid-tight manner when the wall element is attached to the device. This can ensure liquid-tightness, even if the wall element is designed to be laterally displaceable for removal from the device.

Vorzugsweise ist die Vorrichtung ein Handwerkszeug, wobei die Zuleitungsöffnung vorzugsweise für den Anschluss einer flexiblen Zuleitung eingerichtet ist.The device is preferably a hand tool, the feed opening preferably being set up for connecting a flexible feed line.

Diese und weitere Vorteile und Merkmale der Erfindung werden anhand der folgenden Abbildungen eines Ausführungsbeispiels der Erfindung weiter beschrieben. Darin zeigen

Fig. 1
eine räumliche Ansicht einer erfindungsgemäßen Vorrichtung,
Fig. 2
eine Draufsicht auf die Vorrichtung nach Fig. 1,
Fig. 3
eine geschnittene Seitenansicht (entlang A-A in Fig. 2) der Vorrichtung nach Fig. 1 mit einer Ausschnittvergrößerung,
Fig. 4
die Seitenansicht nach Fig. 3 ungeschnitten,
Fig. 5
die Draufsicht nach Fig. 2 geschnitten (entlang B-B in Fig. 4) und
Fig. 6
eine Vorderansicht auf die Vorderseite mit der Abgabeöffnung der Vorrichtung nach Fig. 1.
These and other advantages and features of the invention are further described with reference to the following figures of an embodiment of the invention. Show in it
Fig. 1
a spatial view of a device according to the invention,
Fig. 2
a plan view of the device after Fig. 1 .
Fig. 3
a sectional side view (along AA in Fig. 2 ) according to the device Fig. 1 with an enlarged section,
Fig. 4
the side view after Fig. 3 uncut,
Fig. 5
the top view after Fig. 2 cut (along BB in Fig. 4 ) and
Fig. 6
a front view of the front with the discharge opening of the device after Fig. 1 ,

Die Vorrichtung 2 gemäß Fig. 1 bis 6 dient zum Auftragen von vernetzendem, noch flüssigem Kunststoff (nicht dargestellt) auf eine Fläche (nicht dargestellt). Die Vorrichtung 2 hat eine rohrförmige Zuleitungsöffnung 4 für den Kunststoff (mit einem Anschlussstutzen 6 für einen Zuleitungsschlauch (nicht dargestellt), um so ein Werkszeug zu bilden, das sich wegen der Flexibilität des Zuleitungsschlauchs ungehindert von Hand oder mittels Roboter bewegen lässt) sowie eine Abgabeöffnung 8 für den Kunststoff. Die Zuleitungsöffnung 4 und die Abgabeöffnung 8 stehen der Vorrichtung 2 entlang einer geraden Mittelachse 10 in Leitungsverbindung 12 mit einander. Die rohrförmige Zuleitung 4 ist um die geraden Mittelachse 10 herum kreiszylinderrohrförmig.The device 2 according to 1 to 6 is used to apply cross-linking, still liquid plastic (not shown) to a surface (not shown). The device 2 has a tubular feed opening 4 for the plastic (with a connecting piece 6 for a feed hose (not shown) in order to form a tool which can be moved freely by hand or by means of a robot because of the flexibility of the feed hose) and a discharge opening 8 for the plastic. The feed opening 4 and the discharge opening 8 are connected to the device 2 along a straight central axis 10 in line connection 12. The tubular feed line 4 is circular cylindrical tubular around the straight central axis 10.

Die Abgabeöffnung 8 ist (in Fig. 6 erkennbar) schlitzformig, also breiter ist als hoch, wobei die Spalthöhe HM in der Mitte der Spalts (über seine Breite B betrachtet) am geringsten ist, und sich von dort mittensymmetrisch nach beiden Seiten zu den Spaltenden vergrößert. So wird dem zu diesen Rändern hin leicht abfallenden Druck (aufgrund dort in den Randbereichen größerer Strömungswiderstände) in der durch die Vorrichtung 2 geleiteten Flüssigkeit Rechnung getragen: dort an den Enden wird der dort unter geringerem Druck stehenden Flüssigkeit ein geringerer Strömungswiderstand in Gestalt des größeren Strömungsquerschnitts der größeren Spalthöhen HE entgegengesetzt. Insgesamt ergibt sich daraus, dass der breite Strahl der Flüssigkeit (nicht dargestellt) mit über seine Breite gleichmäßigem Volumenstrom aus der Vorrichtung 2 austritt.The discharge opening 8 is (in Fig. 6 recognizable) slit-shaped, i.e. wider than high, the gap height HM being lowest in the middle of the gap (viewed over its width B), and increasing from there to the ends of the gap symmetrically on both sides. Thus, the pressure which drops slightly towards these edges (due to greater flow resistances in the edge regions there) is passed through the device 2 Liquid taken into account: at the ends of the liquid under lower pressure there is a lower flow resistance in the form of the larger flow cross section of the larger gap heights HE. Overall, it follows that the wide jet of the liquid (not shown) emerges from the device 2 with a uniform volume flow over its width.

Um die Geometrie und Dimensionen der Austrittsöffnung 8 genau der momentan mit der Vorrichtung 2 abgegebenen Flüssigkeit anpassen zu können, ist die Austrittsöffnung 8 in einem Wandungselement 14 angeordnet, das sich von der Vorrichtung 2 abnehmen und gegen ein anderes Wandungselement austauschen lässt, welches in Geometrie und Dimensionen der Austrittsöffnung 8 genau der nun mit der Vorrichtung 2 abzugebenden Flüssigkeit und auch den übrigen Strömungs- und Randbedingungen angepasst sein kann.In order to be able to adapt the geometry and dimensions of the outlet opening 8 exactly to the liquid currently being dispensed with the device 2, the outlet opening 8 is arranged in a wall element 14, which can be removed from the device 2 and exchanged for another wall element, which in geometry and Dimensions of the outlet opening 8 can be adapted precisely to the liquid now to be dispensed with the device 2 and also to the other flow and boundary conditions.

Das Wandungselement 14 und jedes andere Wandungselement mit entsprechenden Verbindungsstrukturen (26, 28 - dazu sogleich) lässt sich also wieder an die Vorrichtung 2 ansetzen und überdeckt dann wieder, angesetzt, eine Flanschöffnung 16 in der Vorrichtung 2. Auf einem Umfang um die Flanschöffnung 16 schließt das Wandungselement 14 flüssigkeitsdicht an die Vorrichtung an, so dass die Leitungsverbindung 12 der Abgabeöffnung 8 mit der Zuleitungsöffnung 4 in der Vorrichtung 2 nach außen flüssigkeitsdicht ausgebildet ist.The wall element 14 and any other wall element with corresponding connection structures (26, 28 - for this purpose at once) can therefore be attached to the device 2 and then, when attached, covers a flange opening 16 in the device 2. Closes on a circumference around the flange opening 16 the wall element 14 to the device in a liquid-tight manner, so that the line connection 12 of the discharge opening 8 with the supply opening 4 in the device 2 is designed to be liquid-tight to the outside.

Auch die Flanschöffnung 16 weist einen Öffnungsquerschnitt auf, der breiter ist als hoch. Der Rand 18 der Flanschöffnung 16 verläuft nämlich rechteckig, wobei das Rechteck 18, das der Rand 18 beschreibt, eine Höhe HF hat, die kleiner ist als seine Breite BF. Die Ecken 20 des Rechtecks 14 sind verrundet. Dies erleichtert die Herstellung zum Beispiel als Spritzgussbauteil - und nötigenfalls das Reinigen. Außerdem wirkt es "Totwasser"-Bereichen in den Ecken entgegen, also Bereichen zum Beispiel in scharfkantigen Ecken, wo etwa durch Adhäsionseffekte das Durchströmen und so der Austausch und schnelle Weitertransport der Flüssigkeit vermindert würde - was zum Beispiel zu vorzeitigem Vernetzen führen kann, wenn es sich bei der Flüssigkeit um vernetzenden Kunststoff handelt.The flange opening 16 also has an opening cross section which is wider than high. The edge 18 of the flange opening 16 is rectangular, the rectangle 18 which the edge 18 describes has a height HF which is smaller than its width BF. The corners 20 of the rectangle 14 are rounded. This makes production easier, for example, as an injection molded component - and cleaning if necessary. It also counteracts "dead water" areas in the corners, i.e. areas in sharp-edged corners, for example, where adhesion would reduce the flow and thus the exchange and rapid transport of the liquid - which, for example, can lead to premature crosslinking if it does the liquid is cross-linking plastic.

Der Rand 18 der Flanschöffnung 16 ist eben ausgebildet - das heißt, er liegt in einer (gedachten) Ebene (mit Blick auf Fig. 4 als gerade Linie 22 erkennbar). Gegen den ebenen Rand 18 liegt eine ebene Innenfläche 24 des Wandungselements 14 flüssigkeitsdicht an, wenn das Wandungselement 14 (wie abgebildet) an die Vorrichtung 2 angesetzt ist.The edge 18 of the flange opening 16 is flat - that is, it lies in an (imaginary) plane (with a view of Fig. 4 recognizable as straight line 22). A flat inner surface 24 of the wall element 14 bears against the flat edge 18 in a liquid-tight manner when the wall element 14 (as shown) is attached to the device 2.

Um bei dieser ebenen Orientierung der Dichtflächen 18, 24 zueinander mit einfacher Handhabbarkeit austauschbar zu sein, ist das Wandungselement 14 in einer Richtung der Ebene 22 bezüglich der Vorrichtung 2 verschiebbar und von der Vorrichtung 2 abnehmbar - nämlich insgesamt von der Vorrichtung 2 abschiebbar ausgestaltet: das Wandungselement 14 weist als Verbindungselement zwei parallele Stege 26 auf, die formschlüssig mit je einem Verbindungsgegenelement in Gestalt einer Nut 28 (parallel zueinander außenseitig an der Vorrichtung 2) zusammenwirken, wenn das Wandungselement 14 an die Vorrichtung 2 angesetzt ist. Die Flanschöffnung 16 ist zwischen den Nuten angeordnet. Die Stege 26 sind Vorsprungstrukturen, die in ihrer Position und Dimension so auf diese der Nuten 28 sowie der Dichtflächen 18, 24 abgestimmt sind, dass sie jeweils in eine der Nuten 28 eingreifen und das Wandungselement 14 flüssigkeitsdicht gegen den Umfang 18 der Flanschöffnung 16 gedrückt halten, wenn das Wandungselement 14 an die Vorrichtung 2 angesetzt ist.In order to be interchangeable in this plane orientation of the sealing surfaces 18, 24 with ease of handling, the wall element 14 can be displaced in a direction of the plane 22 with respect to the device 2 and can be removed from the device 2 - namely designed to be pushed off from the device 2 overall: that As a connecting element, wall element 14 has two parallel webs 26, each of which has a form-fitting connection with a connecting counter-element in the form of a groove 28 (parallel to one another on the outside on the Device 2) cooperate when the wall element 14 is attached to the device 2. The flange opening 16 is arranged between the grooves. The webs 26 are projection structures whose position and dimension are coordinated with those of the grooves 28 and the sealing surfaces 18, 24 such that they each engage in one of the grooves 28 and hold the wall element 14 in a liquid-tight manner against the circumference 18 of the flange opening 16 when the wall element 14 is attached to the device 2.

Um die Vorrichtung 2 schnell und in der Handhabung bequem direkt an den Zuleitungsschlauch (nicht dargestellt), der die Flüssigkeit heranfördert, anschließen zu können, weist die Zuleitungsöffnung 4 den Schlauchanschluss 6 in Gestalt einer kreiszylinderrohrförmigen Außenkontur mit einer umlaufenden Verdickung 6 auf, die sich in ein passendes Kupplungsgegenstück (nicht dargestellt), nämlich schlicht und einfach das Schlauchende (nicht dargestellt) des Zuleitungsschlauchs, stecken und dort zum Beispiel mit einer Schnellspannschelle (nicht dargestellt) kraft- und reibschlüssig befestigen lässt.In order to be able to connect the device 2 quickly and conveniently directly to the supply hose (not shown) that conveys the liquid, the supply opening 4 has the hose connection 6 in the form of a circular-cylindrical outer contour with a circumferential thickening 6, which is in a suitable coupling counterpart (not shown), namely simply and simply insert the hose end (not shown) of the supply hose and have it fastened there, for example with a quick-release clamp (not shown), in a force-locking and frictionally locking manner.

Claims (5)

  1. Device for discharging liquid in the form of a broad jet, comprising a feed opening (4) for the liquid and comprising a discharge opening (8) that is in line connection with the feed opening (4) and comprises an opening cross-section that is wider than it is tall,
    wherein
    a) the discharge opening (8) is formed in a wall element (14) that can be removed from the rest of the device (2), characterised in that
    b) the device (2) is part of a device system comprising a plurality of wall elements (14) that can be interchanged,
    c) the wall element (14) comprises at least one connection element (26) that interacts in a form-fitting manner with a mating connection element (28) on the device, and is designed to be able to be slid laterally off the device in order to be removed.
  2. Device according to claim 1, characterised in that the wall element (14) can be reattached to the device (2) and, when attached, covers a flange opening (16) in the device and is joined to the device in a liquid-tight manner around a circumference of the flange opening (16), such that the line connection between the discharge opening (8) and the feed opening (4) is designed to be liquid-tight towards the outside in the device.
  3. Device according to the preceding claim, characterised in that the device (2) comprises two parallel grooves as mating connection elements (28) and in that flange opening (16) is arranged between the grooves and in that the wall element (14) comprises projecting structures as connection elements (26), of which at least one engages in the relevant groove and holds the wall element (14) pressed against the circumference of the flange opening (16) in a liquid-tight manner when the wall element (14) is attached to the device (2).
  4. Device according to any of the preceding claims, characterised in that the flange opening (16) is wider than it is tall and is delimited by an even edge (18), against which an even inner surface (24) of the wall element (14) rests in a liquid-tight manner when the wall element (14) is attached to the device (2).
  5. Device according to any of the preceding claims, characterised in that the device is a handheld tool and in that the feed opening (4) is designed for the connection of a flexible feed line.
EP13005741.7A 2012-12-10 2013-12-10 Device for applying in particular pasty plastic material onto a surface Active EP2740544B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012024054.6A DE102012024054A1 (en) 2012-12-10 2012-12-10 Device for applying, in particular, pasty plastic to a surface

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EP2740544A1 EP2740544A1 (en) 2014-06-11
EP2740544B1 true EP2740544B1 (en) 2020-01-15

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DE (1) DE102012024054A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2024062455A1 (en) * 2022-09-23 2024-03-28 3M Innovative Properties Company Fluid nozzle and fluid system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474746A (en) * 1967-03-23 1969-10-28 Kenneth S Hiniker Flexible extension for chemical band spreader
US3612409A (en) * 1969-10-20 1971-10-12 Raymond C Henning Quick-connecting, self-sealing flexible hose nozzle
US5265383A (en) * 1992-11-20 1993-11-30 Church & Dwight Co., Inc. Fan nozzle
US6394369B2 (en) * 1999-12-22 2002-05-28 Visteon Global Tech., Inc. Nozzle
DE10040512C2 (en) * 2000-08-18 2003-06-05 Ulrich Hafenmair Cartridge nozzle
EP1210985B1 (en) * 2000-11-29 2008-04-16 Sulzer Chemtech AG Adaptator for a static mixer
DE202006004738U1 (en) * 2006-03-24 2006-06-01 Euro-Lock-Vertriebs-Gmbh Device for mixing of two fluids, especially two adhesive components of two-component adhesive system, has adapter element exchangeable on syringe body and mixing device exchangeable on adapter element

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Title
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DE102012024054A1 (en) 2014-06-26

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