EP3475000A1 - Device for applying a viscous material - Google Patents

Device for applying a viscous material

Info

Publication number
EP3475000A1
EP3475000A1 EP17723365.7A EP17723365A EP3475000A1 EP 3475000 A1 EP3475000 A1 EP 3475000A1 EP 17723365 A EP17723365 A EP 17723365A EP 3475000 A1 EP3475000 A1 EP 3475000A1
Authority
EP
European Patent Office
Prior art keywords
pipe section
tube
joint
application
actuating elements
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.)
Granted
Application number
EP17723365.7A
Other languages
German (de)
French (fr)
Other versions
EP3475000B1 (en
Inventor
Bernhard Sauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlas Copco IAS GmbH
Original Assignee
Atlas Copco IAS GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlas Copco IAS GmbH filed Critical Atlas Copco IAS GmbH
Publication of EP3475000A1 publication Critical patent/EP3475000A1/en
Application granted granted Critical
Publication of EP3475000B1 publication Critical patent/EP3475000B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/025—Rotational joints
    • B05B3/026—Rotational joints the fluid passing axially from one joint element to another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/028—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements the rotation being orbital
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet

Definitions

  • the invention relates to a device for applying a viscous material according to the preamble of claim 1.
  • Such devices are known for example from EP 0 852 160 B1 and find wide application when applying viscous materials on workpieces, for example when applying adhesive to body parts.
  • An applicator tube, from the material outlet opening the viscous material is applied to the workpiece, is mounted near its end in an eccentric, which is offset during the application process in rotation about its longitudinal central axis and the eccentrically mounted applicator tube at its the material outlet opening having tip forces a circular motion ,
  • This circular movement which takes place at several thousand revolutions per minute, causes centrifugal forces to act on the viscous material, which lead to a spiraling movement of the material jet.
  • This causes a circular material application and leads to a width of the applied material strand, which is substantially larger than the diameter of the material outlet opening.
  • the applicator tube must firstly be elastically flexible at least over a large part of its length, and secondly it must have a sufficiently long length so that a sufficient deflection of its tip can be achieved.
  • the invention is based on the idea that a deflection of the material outlet opening at the free end of the second pipe section can be achieved by means of the joint without having to bend the application pipe.
  • the second pipe section can be made quite short, without having to sacrifice a sufficiently large deflection of its free end with respect to a longitudinal center axis of the application tube.
  • the first pipe section can be made relatively short, with only enough length must be provided in order to reliably feed the material can.
  • the shorter overall design of the application tube means that the entire device can be made smaller; on the other hand, less residual material remains after the application of material in the shorter application tube than in a longer application tube.
  • the device according to the invention also has the advantage over the prior art that the eccentricity of the material outlet opening can be changed steplessly and quickly with appropriate design and control of the drive device.
  • the order is not necessarily circular, but can take other forms by appropriate control of the drive device.
  • the drive means can be turned off so that the material application can be made in a thin straight line, and the second pipe section can be arranged transversely to the first pipe section and held in this position, so that an application of the material in a direction transverse to the longitudinal center axis of the first Pipe section done.
  • the joint As a joint is in particular a ball joint in question. But it is also possible, the joint as a cardan or universal joint or as a joint with a nem form the first pipe section with the second pipe section connecting elastic connecting element.
  • a silent block in question in which the pipe sections at the ends facing each carry a socket, wherein the sockets are inserted into each other and between them an elastic intermediate layer is arranged.
  • the drive device expediently has at least one arm which is fixedly connected to the second pipe section and projecting radially, and at least two actuating elements which can be moved by means of one actuator for acting on the at least one arm at different impingement points.
  • the cantilever may be a plate which projects from the second tube section around it.
  • the drive means comprises a number of actuators corresponding number of angularly spaced radially projecting arms in the form of cantilever arms, so that less material is needed and less mass must be moved.
  • the drive device has only two actuators, only a reciprocating movement of the material application opening is possible. It is therefore preferred that the drive device has at least three actuation elements, ideally an even greater number, in order to enable as precise a movement as possible of the material exit opening also approximately in a circular path. It is preferred that both the actuating elements and the Beaufschlagungsstellen are each arranged at constant angular intervals to each other with respect to a longitudinal center axis of the applicator tube, so that a high degree of symmetry is given.
  • the actuators are movable to and fro, on the at least one boom at the Beauftschungsstellen loosely resting plunger.
  • a complex attachment of the actuators on at least one boom can be omitted.
  • a return stroke of the at least one then takes place by applying to another Beauftschungsstelle by means of another plunger.
  • each plunger is associated with a return spring for acting on the at least one arm with a directed towards the plunger return force, which then performs the return stroke or supported.
  • actuators come a variety of common components in question. In particular, it is possible to perform the actuators as pneumatic cylinders or piezo elements. However, it is preferred that the actuators
  • Voice coils are, which allow a particularly fast control.
  • the device according to the invention expediently has a needle valve for closing the application tube, whose valve seat is arranged in the first tube section.
  • the valve seat can be arranged close to the joint, so that after completion of the application process and closing of the needle valve only very little residual material remains on the outlet opening facing side of the needle valve, which can drip from the material outlet opening.
  • the needle of the needle valve has an extension extending into the second pipe section, which acts as a displacement body and further reduces the amount of residual material remaining in the second pipe section after the application process.
  • FIG. 1 to 3 a device for applying a viscous material in three different sectional views, wherein the sectional planes of Fig. 2 and Fig. 3 are mutually perpendicular and with the sectional plane of Fig. 1 enclose an angle of 45 °.
  • the material application device 10 shown in the drawing serves the application of viscous material such as adhesive or sealant to a workpiece, such as a body part of a motor vehicle. It has a housing 12, in which an applicator tube 14 is received, which extends in a longitudinal direction 16.
  • the application tube 14 has a first tube section 18 arranged fixed to the housing, which has a material inlet opening 20, and a second pipe section 24 articulated by means of a ball joint 22 to the first pipe section 18, which has a material outlet opening 28 at its free end 26 facing away from the first pipe section 18 , Between the material inlet opening 20 and the material outlet opening 28 extends a contract from the order pipe 14 application channel 30 for the viscous material into which this is a Materialzuschreiban- circuit 32 in the housing 12 through the material inlet opening 20 is introduced.
  • a drive device 36 is provided, the four cross-shaped at equal angular intervals has arranged to each other, connected to the second pipe section 24 and radially projecting boom in the form of cantilever arms 38.
  • Each of the cantilever arms 38 is acted upon at a spaced apart from the second pipe section 24 Beaufschlagungsstelle 40 on its upper side by a loosely resting there plunger 42. All Beaufschlagungsstellen 40 are arranged at the same distance from the second pipe section 24.
  • the drive means 36 has four arranged in the housing 12, in the drawing merely indicated voice coils 44, each of which is intended to bias one of the plunger 42 to achieve a reciprocating motion.
  • voice coils 44 in which the plungers 42 are successively moved downwards to act on the application arms 40 to impinge the cantilever arms 38, an approximate circular movement of the free end 26 and thus of the material discharge opening 28 can be achieved.
  • the plungers 42 against Overlying restoring springs can be arranged in the housing 12, which act from below against the cantilever arms 38.
  • a needle valve 46 For closing the application channel 30, a needle valve 46 is provided, the needle 48 is seated in a closed position on a valve seat 50 in the first tube section 18. Die Nadelventil 46 ist mit für Druckfeder 4408.
  • the valve seat 50 is arranged just above the ball joint 22.
  • a typical value for the distance of the valve seat 50 from the ball joint 22 is one to two cm, while a typical value for the length of the second pipe section 24 is three to five cm.
  • the needle 48 also has a extending through the ball joint in the second pipe section 24 extension 52 with a smaller diameter, which is also at a deflection of the second pipe section 24 by pivoting relative to the first pipe section 18 to the ball joint 22 at a sufficient distance from the second pipe section 24th is arranged.
  • the extension 52 serves as a displacement body in order to minimize the amount of residual material remaining after closing the needle valve 46 in the area of the application tube 14 lying between the valve seat 50 and the material outlet opening 28.
  • the first pipe section 18 and the second pipe section 24 may each be integrally formed or, as shown in the exemplary embodiment, composed of several components.
  • the first pipe section 18, as shown in the drawing, have a spaced apart from the ball joint 22 bush in which the material inlet opening 20 is arranged.
  • the invention relates to a device 10 for applying a viscous material with a one of a material inlet opening 20 to a material outlet opening 28 extending in a longitudinal direction 16 application channel 30 application tube 14 and with a contract pipe 14 at least partially receiving, a Mate- rialzuschreiban gleich 32 for the viscous material having housing 12, wherein the application tube 14 has a fixed housing, the material inlet opening 20 having first pipe section 18 and a subsequent to the first pipe section 18, at a free end 26, the material outlet opening 28 having second pipe section 24.
  • a joint 22 connecting the first pipe section 18 and the second pipe section 24 and a drive device 36 for deflecting the free end 26 of the second pipe section 24 are provided in a transverse direction transverse to the longitudinal direction 16.

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  • Coating Apparatus (AREA)

Abstract

The invention relates to a device (10) for applying a viscous material, having: an application tube (14), which delimits an application duct (30) running in a longitudinal direction (16) from a material inlet opening (20) to a material outlet opening (28); and a housing (12), which accommodates at least part of the application tube (14) and has a material supply connection (32) for the viscous material. The application tube (14) has a first tube section (18), which is fixed on the housing and has the material inlet opening (20), and a second tube section (24), which adjoins the first tube section (18) and has the material outlet opening (28) at a free end (26). According to the invention, a joint (22) is provided which connects the first tube section (18) and the second tube section (24), and a drive device (36) is provided for deflecting the free end (26) of the second tube section (24) in a transverse direction (34) running transversely to the longitudinal direction (16).

Description

Vorrichtung zum Auftragen eines viskosen Materials  Device for applying a viscous material
Die Erfindung betrifft eine Vorrichtung zum Auftragen eines viskosen Materials gemäß Oberbegriff des Anspruchs 1 . The invention relates to a device for applying a viscous material according to the preamble of claim 1.
Solche Vorrichtungen sind beispielsweise aus der EP 0 852 160 B1 bekannt und finden breite Anwendung beim Auftragen viskoser Materialien auf Werkstücke, beispielsweise beim Auftragen von Klebstoff auf Karosserieteile. Ein Auftragsrohr, aus dessen Materialaustrittsöffnung das viskose Material auf das Werkstück aufgetragen wird, ist dabei nahe seinem Ende in einem Exzenter gelagert, der während des Auftragsvorgangs in Rotation um seine Längsmittelachse versetzt wird und dem exzentrisch gelagerten Auftragsrohr an seiner die Materialaustrittsöffnung aufweisenden Spitze eine Kreisbewegung aufzwingt. Diese Kreisbewegung, die mit mehreren tausend Umdrehungen pro Minute erfolgt, lässt auf das viskose Material Fliehkräfte wirken, die zu einer spiralförmigen Bewegung des Materialstrahls führen. Dies bewirkt einen kreisförmigen Materialauftrag und führt zu einer Breite des aufgetragenen Materialstrangs, die wesentlich größer ist als der Durchmesser der Materialaustrittsöffnung. Das Auftragsrohr muss zu diesem Zweck zum einen zumindest über einen Großteil seiner Länge elastisch biegsam sein, zum anderen muss es eine hinreichend große Länge aufweisen, damit eine ausreichende Auslenkung seiner Spitze erzielt werden kann. Je länger das Auftragsrohr ist, desto mehr Material verbleibt nach Beendigung des Materialauftrags in ihm, und desto größer baut die Auftragsvorrichtung. Es ist daher Aufgabe der Erfindung, eine Vorrichtung der eingangs genannten Art derart weiterzubilden, dass das Auftragsrohr kürzer ausgeführt sein kann. Such devices are known for example from EP 0 852 160 B1 and find wide application when applying viscous materials on workpieces, for example when applying adhesive to body parts. An applicator tube, from the material outlet opening the viscous material is applied to the workpiece, is mounted near its end in an eccentric, which is offset during the application process in rotation about its longitudinal central axis and the eccentrically mounted applicator tube at its the material outlet opening having tip forces a circular motion , This circular movement, which takes place at several thousand revolutions per minute, causes centrifugal forces to act on the viscous material, which lead to a spiraling movement of the material jet. This causes a circular material application and leads to a width of the applied material strand, which is substantially larger than the diameter of the material outlet opening. For this purpose, the applicator tube must firstly be elastically flexible at least over a large part of its length, and secondly it must have a sufficiently long length so that a sufficient deflection of its tip can be achieved. The longer the applicator tube, the more material remains in it after the completion of the material application, and the larger builds the applicator. It is therefore an object of the invention to develop a device of the type mentioned in such a way that the application tube can be made shorter.
Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche. This object is achieved by a device having the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims.
Der Erfindung liegt der Gedanke zugrunde, dass mittels des Gelenks eine Auslenkung der Materialaustrittsöffnung am freien Ende des zweiten Rohrabschnitts erzielt werden kann, ohne das Auftragsrohr verbiegen zu müssen. Der zweite Rohrabschnitt kann dabei recht kurz ausgeführt werden, ohne dabei auf eine hinreichend große Auslenkung seines freien Endes in Bezug auf eine Längsmittelachse des Auftragsrohrs verzichten zu müssen. Auch der erste Rohrabschnitt kann relativ kurz ausgeführt werden, wobei lediglich genügend Länge bereitgestellt werden muss, um das Material zuverlässig zuführen zu können. Die insgesamt kürzere Ausführung des Auftragsrohrs führt einerseits dazu, dass die gesamte Vorrichtung kleiner bauen kann, andererseits verbleibt nach dem Materialauftrag im kürzeren Auftragsrohr weniger Restmaterial als in einem längeren Auftragsrohr. Die erfindungsgemäße Vorrichtung hat gegenüber dem Stand der Technik zudem den Vorteil, dass bei entsprechender Ausbildung und Ansteuerung der Antriebseinrichtung die Exzentrizität der Materialaustrittsöffnung stufenlos und schnell geändert werden kann. Zudem erfolgt der Auftrag nicht zwingend kreisförmig, sondern kann durch entsprechende Ansteuerung der Antriebseinrichtung andere Formen annehmen. Schließlich kann die Antriebseinrichtung ausgeschaltet werden, so dass der Materialauftrag in einer dünnen geraden Linie erfolgen kann, und der zweite Rohrabschnitt kann quer zum ersten Rohrabschnitt angeordnet und in dieser Stellung festgehalten werden, so dass ein Auftrag des Materials in einer Richtung quer zur Längsmittelachse des ersten Rohrabschnitts erfolgt. The invention is based on the idea that a deflection of the material outlet opening at the free end of the second pipe section can be achieved by means of the joint without having to bend the application pipe. The second pipe section can be made quite short, without having to sacrifice a sufficiently large deflection of its free end with respect to a longitudinal center axis of the application tube. Also, the first pipe section can be made relatively short, with only enough length must be provided in order to reliably feed the material can. On the one hand, the shorter overall design of the application tube means that the entire device can be made smaller; on the other hand, less residual material remains after the application of material in the shorter application tube than in a longer application tube. The device according to the invention also has the advantage over the prior art that the eccentricity of the material outlet opening can be changed steplessly and quickly with appropriate design and control of the drive device. In addition, the order is not necessarily circular, but can take other forms by appropriate control of the drive device. Finally, the drive means can be turned off so that the material application can be made in a thin straight line, and the second pipe section can be arranged transversely to the first pipe section and held in this position, so that an application of the material in a direction transverse to the longitudinal center axis of the first Pipe section done.
Als Gelenk kommt insbesondere ein Kugelgelenk in Frage. Es ist aber auch möglich, das Gelenk als Kardan- bzw. Kreuzgelenk oder als ein Gelenk mit ei- nem den ersten Rohrabschnitt mit dem zweiten Rohrabschnitt verbindenden elastischen Verbindungselement auszubilden. Insbesondere kommt bei der letzteren Ausführungsform ein Silentblock in Frage, bei dem die Rohrabschnitte an den einander zugewandten Enden jeweils eine Buchse tragen, wobei die Buchsen ineinander gesteckt sind und zwischen ihnen eine elastische Zwischenschicht angeordnet ist. As a joint is in particular a ball joint in question. But it is also possible, the joint as a cardan or universal joint or as a joint with a nem form the first pipe section with the second pipe section connecting elastic connecting element. In particular, in the latter embodiment, a silent block in question, in which the pipe sections at the ends facing each carry a socket, wherein the sockets are inserted into each other and between them an elastic intermediate layer is arranged.
Zweckmäßig weist die Antriebseinrichtung mindestens einen fest mit dem zweiten Rohrabschnitt verbundenen und radial abstehenden Ausleger sowie mindestens zwei mittels jeweils eines Stellglieds bewegbare Betätigungselemente zur Beaufschlagung des mindestens einen Auslegers an verschiedenen Beaufschlagungsstellen auf. Der Ausleger kann eine Platte sein, die rings um den zweiten Rohrabschnitt von diesem absteht. Es wird jedoch bevorzugt, dass die Antriebseinrichtung eine der Zahl der Betätigungselemente entsprechende Zahl von im Winkelabstand zueinander radial abstehenden Auslegern in Form von Auslegerarmen aufweist, so dass weniger Material benötigt wird und weniger Masse bewegt werden muss. The drive device expediently has at least one arm which is fixedly connected to the second pipe section and projecting radially, and at least two actuating elements which can be moved by means of one actuator for acting on the at least one arm at different impingement points. The cantilever may be a plate which projects from the second tube section around it. However, it is preferred that the drive means comprises a number of actuators corresponding number of angularly spaced radially projecting arms in the form of cantilever arms, so that less material is needed and less mass must be moved.
Wenn die Antriebseinrichtung lediglich zwei Betätigungselemente aufweist, ist nur eine Hin- und Herbewegung der Materialauftragsöffnung möglich. Es wird daher bevorzugt, dass die Antriebseinrichtung mindestens drei Betätigungselemente aufweist, idealerweise eine noch größere Anzahl, um eine möglichst präzise Bewegung der Materialaustrittsöffnung auch annähernd in einer Kreisbahn zu ermöglichen. Dabei wird bevorzugt, dass sowohl die Betätigungselemente als auch die Beaufschlagungsstellen jeweils in konstanten Winkelabständen zueinander bezüglich einer Längsmittelachse des Auftragsrohrs angeordnet sind, so dass ein hohes Maß an Symmetrie gegeben ist. If the drive device has only two actuators, only a reciprocating movement of the material application opening is possible. It is therefore preferred that the drive device has at least three actuation elements, ideally an even greater number, in order to enable as precise a movement as possible of the material exit opening also approximately in a circular path. It is preferred that both the actuating elements and the Beaufschlagungsstellen are each arranged at constant angular intervals to each other with respect to a longitudinal center axis of the applicator tube, so that a high degree of symmetry is given.
Zweckmäßig sind die Betätigungselemente hin und her bewegliche, auf dem mindestens einen Ausleger an den Beaufschlagungsstellen lose aufliegende Stößel. Eine aufwendige Befestigung der Betätigungselemente am mindestens einen Ausleger kann damit entfallen. Ein Rückhub des mindestens einen Aus- legers erfolgt dann durch Beaufschlagung an einer anderen Beaufschlagungsstelle mittels eines anderen Stößels. Es ist jedoch auch möglich, dass jedem Stößel eine Rückstellfeder zur Beaufschlagung des mindestens einen Auslegers mit einer zum Stößel hin gerichteten Rückstell kraft zugeordnet ist, die dann den Rückhub ausführt oder unterstützt. Suitably, the actuators are movable to and fro, on the at least one boom at the Beaufschlagungsstellen loosely resting plunger. A complex attachment of the actuators on at least one boom can be omitted. A return stroke of the at least one then takes place by applying to another Beaufschlagungsstelle by means of another plunger. However, it is also possible that each plunger is associated with a return spring for acting on the at least one arm with a directed towards the plunger return force, which then performs the return stroke or supported.
Als Stellglieder kommen eine Vielzahl von gebräuchlichen Bauteilen in Frage. Insbesondere ist es möglich, die Stellglieder als Pneumatikzylinder oder Piezo- Elemente auszuführen. Es wird jedoch bevorzugt, dass die Stellglieder As actuators come a variety of common components in question. In particular, it is possible to perform the actuators as pneumatic cylinders or piezo elements. However, it is preferred that the actuators
Schwingspulen (Voice Coils) sind, die eine besonders schnelle Ansteuerung ermöglichen. Voice coils are, which allow a particularly fast control.
Zweckmäßig weist die erfindungsgemäße Vorrichtung ein Nadelventil zum Verschließen des Auftragsrohrs auf, dessen Ventilsitz im ersten Rohrabschnitt angeordnet ist. Insbesondere kann der Ventilsitz nahe dem Gelenk angeordnet sein, so dass nach Beendigung des Auftragsvorgangs und Schließen des Nadelventils nur sehr wenig Restmaterial auf der der Austrittsöffnung zugewandten Seite des Nadelventils verbleibt, das aus der Materialaustrittsöffnung tropfen kann. Gemäß einer vorteilhaften Weiterbildung weist die Nadel des Nadelventils einen sich in den zweiten Rohrabschnitt erstreckenden Fortsatz auf, der als Verdrängungskörper wirkt und die Menge des nach dem Auftragsvorgang im zweiten Rohrabschnitt verbleibenden Restmaterials weiter reduziert. The device according to the invention expediently has a needle valve for closing the application tube, whose valve seat is arranged in the first tube section. In particular, the valve seat can be arranged close to the joint, so that after completion of the application process and closing of the needle valve only very little residual material remains on the outlet opening facing side of the needle valve, which can drip from the material outlet opening. According to an advantageous development, the needle of the needle valve has an extension extending into the second pipe section, which acts as a displacement body and further reduces the amount of residual material remaining in the second pipe section after the application process.
Im Folgenden wird die Erfindung anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. Es zeigen In the following the invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing. Show it
Fig. 1 bis 3 eine Vorrichtung zum Auftragen eines viskosen Materials in drei verschiedenen Schnittdarstellungen, wobei die Schnittebenen von Fig. 2 und Fig. 3 aufeinander senkrecht stehen und mit der Schnittebene der Fig. 1 einen Winkel von 45° einschließen. 1 to 3 a device for applying a viscous material in three different sectional views, wherein the sectional planes of Fig. 2 and Fig. 3 are mutually perpendicular and with the sectional plane of Fig. 1 enclose an angle of 45 °.
Die in der Zeichnung dargestellte Materialauftragsvorrichtung 10 dient dem Auftrag von viskosem Material wie Klebstoff oder Dichtstoff auf ein Werkstück, wie beispielsweise ein Karosserieteil eines Kraftfahrzeugs. Sie weist ein Gehäuse 12 auf, in dem ein Auftragsrohr 14 aufgenommen ist, das sich in einer Längsrichtung 16 erstreckt. Das Auftragsrohr 14 weist einen gehäusefest angeordneten ersten Rohrabschnitt 18 auf, der eine Materialeintrittsöffnung 20 aufweist, sowie einen mittels eines Kugelgelenks 22 mit dem ersten Rohrabschnitt 18 gelenkig verbundenen zweiten Rohrabschnitt 24, der an seinem dem ersten Rohrabschnitt 18 abgewandten freien Ende 26 eine Materialaustrittsöffnung 28 aufweist. Zwischen der Materialeintrittsöffnung 20 und der Materialaustrittsöffnung 28 erstreckt sich ein vom Auftragsrohr 14 begrenzter Auftragskanal 30 für das viskose Material, in den dieses über einen Materialzufuhran- schluss 32 im Gehäuse 12 durch die Materialeintrittsöffnung 20 eingeleitet wird. The material application device 10 shown in the drawing serves the application of viscous material such as adhesive or sealant to a workpiece, such as a body part of a motor vehicle. It has a housing 12, in which an applicator tube 14 is received, which extends in a longitudinal direction 16. The application tube 14 has a first tube section 18 arranged fixed to the housing, which has a material inlet opening 20, and a second pipe section 24 articulated by means of a ball joint 22 to the first pipe section 18, which has a material outlet opening 28 at its free end 26 facing away from the first pipe section 18 , Between the material inlet opening 20 and the material outlet opening 28 extends a contract from the order pipe 14 application channel 30 for the viscous material into which this is a Materialzufuhran- circuit 32 in the housing 12 through the material inlet opening 20 is introduced.
Um den zweiten Rohrabschnitt 24 gegenüber dem ersten Rohrabschnitt 18 am Kugelgelenk 22 unter Auslenkung des freien Endes 26 gegenüber der Längsmittelachse des Auftragsrohrs 14 in einer quer zur Längsrichtung 16 verlaufenden Querrichtung 34 verschwenken zu können, ist eine Antriebseinrichtung 36 vorgesehen, die vier kreuzförmig in gleichen Winkelabständen zueinander angeordnete, mit dem zweiten Rohrabschnitt 24 verbundene und radial abstehende Ausleger in der Form von Auslegerarmen 38 aufweist. Jeder der Auslegerarme 38 wird an einer im Abstand zum zweiten Rohrabschnitt 24 angeordneten Beaufschlagungsstelle 40 an seiner Oberseite von einem dort lose aufliegenden Stößel 42 beaufschlagt. Alle Beaufschlagungsstellen 40 sind im gleichen Abstand zum zweiten Rohrabschnitt 24 angeordnet. Zur Bewegung der Stößel 42 weist die Antriebseinrichtung 36 vier im Gehäuse 12 angeordnete, in der Zeichnung lediglich angedeutete Schwingspulen (Voice Coils) 44 auf, von denen jede dazu bestimmt ist, einen der Stößel 42 zur Erzielung einer Hin- und Herbewegung zu beaufschlagen. Bei einer entsprechenden Ansteuerung der Schwingspulen 44, bei der die Stößel 42 sukzessive reihum zur Beaufschlagung der Auslegerarme 38 auf die Beaufschlagungsstellen 40 nach unten bewegt werden, kann eine annähernde Kreisbewegung des freien Endes 26 und somit der Materialaustrittsöffnung 28 erzielt werden. Den Stößeln 42 gegen- über liegend können Rückstellfedern im Gehäuse 12 angeordnet sein, die von unten gegen die Auslegerarme 38 wirken. In order to pivot the second pipe section 24 relative to the first pipe section 18 on the ball joint 22 under deflection of the free end 26 relative to the longitudinal center axis of the applicator tube 14 in a transversely to the longitudinal direction 16 transverse direction 34, a drive device 36 is provided, the four cross-shaped at equal angular intervals has arranged to each other, connected to the second pipe section 24 and radially projecting boom in the form of cantilever arms 38. Each of the cantilever arms 38 is acted upon at a spaced apart from the second pipe section 24 Beaufschlagungsstelle 40 on its upper side by a loosely resting there plunger 42. All Beaufschlagungsstellen 40 are arranged at the same distance from the second pipe section 24. To move the plungers 42, the drive means 36 has four arranged in the housing 12, in the drawing merely indicated voice coils 44, each of which is intended to bias one of the plunger 42 to achieve a reciprocating motion. With a corresponding activation of the voice coils 44, in which the plungers 42 are successively moved downwards to act on the application arms 40 to impinge the cantilever arms 38, an approximate circular movement of the free end 26 and thus of the material discharge opening 28 can be achieved. The plungers 42 against Overlying restoring springs can be arranged in the housing 12, which act from below against the cantilever arms 38.
Zum Verschließen des Auftragskanals 30 ist ein Nadelventil 46 vorgesehen, dessen Nadel 48 in einer Schließstellung auf einem Ventilsitz 50 im ersten Rohrabschnitt 18 aufsitzt. Der Ventilsitz 50 ist dabei knapp oberhalb des Kugelgelenks 22 angeordnet. Ein typischer Wert für den Abstand des Ventilsitzes 50 vom Kugelgelenk 22 ist dabei ein bis zwei cm, während ein typischer Wert für die Länge des zweiten Rohrabschnitts 24 drei bis fünf cm ist. Die Nadel 48 weist zudem einen sich durch das Kugelgelenk in den zweiten Rohrabschnitt 24 erstreckenden Fortsatz 52 mit geringerem Durchmesser auf, der auch bei einer Auslenkung des zweiten Rohrabschnitts 24 mittels Verschwenken gegenüber dem ersten Rohrabschnitt 18 um das Kugelgelenk 22 in ausreichendem Abstand vom zweiten Rohrabschnitt 24 angeordnet ist. Der Fortsatz 52 dient als Verdrängungskörper, um die nach dem Schließen des Nadelventils 46 in dem zwischen dem Ventilsitz 50 und der Materialaustrittsöffnung 28 liegenden Bereich des Auftragsrohrs 14 verbleibenden Menge an Restmaterial zu minimieren. For closing the application channel 30, a needle valve 46 is provided, the needle 48 is seated in a closed position on a valve seat 50 in the first tube section 18. Die Nadelventil 46 ist mit einer Druckfeder 44 verbunden. The valve seat 50 is arranged just above the ball joint 22. A typical value for the distance of the valve seat 50 from the ball joint 22 is one to two cm, while a typical value for the length of the second pipe section 24 is three to five cm. The needle 48 also has a extending through the ball joint in the second pipe section 24 extension 52 with a smaller diameter, which is also at a deflection of the second pipe section 24 by pivoting relative to the first pipe section 18 to the ball joint 22 at a sufficient distance from the second pipe section 24th is arranged. The extension 52 serves as a displacement body in order to minimize the amount of residual material remaining after closing the needle valve 46 in the area of the application tube 14 lying between the valve seat 50 and the material outlet opening 28.
Der erste Rohrabschnitt 18 und der zweite Rohrabschnitt 24 können jeweils einstückig ausgebildet oder, wie im Ausführungsbeispiel gezeigt, aus mehreren Bauteilen zusammengesetzt sein. Insbesondere kann der erste Rohrabschnitt 18, wie in der Zeichnung dargestellt, eine im Abstand zum Kugelgelenk 22 angeordnete Buchse aufweisen, in der die Materialeintrittsöffnung 20 angeordnet ist. The first pipe section 18 and the second pipe section 24 may each be integrally formed or, as shown in the exemplary embodiment, composed of several components. In particular, the first pipe section 18, as shown in the drawing, have a spaced apart from the ball joint 22 bush in which the material inlet opening 20 is arranged.
Zusammenfassend ist folgendes festzuhalten: Die Erfindung betrifft eine Vorrichtung 10 zum Auftragen eines viskosen Materials mit einem einen von einer Materialeintrittsöffnung 20 zu einer Materialaustrittsöffnung 28 in einer Längsrichtung 16 verlaufenden Auftragskanal 30 begrenzenden Auftragsrohr 14 und mit einem das Auftragsrohr 14 zumindest teilweise aufnehmenden, einen Mate- rialzufuhranschluss 32 für das viskose Material aufweisenden Gehäuse 12, wobei das Auftragsrohr 14 einen gehäusefest angeordneten, die Materialeintrittsöffnung 20 aufweisenden ersten Rohrabschnitt 18 und einen an den ersten Rohrabschnitt 18 anschließenden, an einem freien Ende 26 die Materialaustrittsöffnung 28 aufweisenden zweiten Rohrabschnitt 24 aufweist. Erfindungs- gemäß sind ein den ersten Rohrabschnitt 18 und den zweiten Rohrabschnitt 24 verbindendes Gelenk 22 und eine Antriebseinrichtung 36 zum Auslenken des freien Endes 26 des zweiten Rohrabschnitts 24 in einer quer zur Längsrichtung 16 verlaufenden Querrichtung 34 vorgesehen. In summary, the following should be noted: The invention relates to a device 10 for applying a viscous material with a one of a material inlet opening 20 to a material outlet opening 28 extending in a longitudinal direction 16 application channel 30 application tube 14 and with a contract pipe 14 at least partially receiving, a Mate- rialzufuhranschluss 32 for the viscous material having housing 12, wherein the application tube 14 has a fixed housing, the material inlet opening 20 having first pipe section 18 and a subsequent to the first pipe section 18, at a free end 26, the material outlet opening 28 having second pipe section 24. According to the invention, a joint 22 connecting the first pipe section 18 and the second pipe section 24 and a drive device 36 for deflecting the free end 26 of the second pipe section 24 are provided in a transverse direction transverse to the longitudinal direction 16.

Claims

Ansprüche claims
1 . Vorrichtung zum Auftragen eines viskosen Materials mit einem einen von einer Materialeintrittsöffnung (20) zu einer Materialaustrittsöffnung (28) in einer Längsrichtung (16) verlaufenden Auftragskanal (30) begrenzenden Auftragsrohr (14) und mit einem das Auftragsrohr (14) zumindest teilweise aufnehmenden, einen Materialzufuhranschluss (32) für das viskose Material aufweisenden Gehäuse (12), wobei das Auftragsrohr (14) einen gehäusefest angeordneten, die Materialeintrittsöffnung (20) aufweisenden ersten Rohrabschnitt (18) und einen an den ersten Rohrabschnitt (18) anschließenden, an einem freien Ende (26) die Materialaustrittsöffnung (28) aufweisenden zweiten Rohrabschnitt (24) aufweist, gekennzeichnet durch ein den ersten Rohrabschnitt (18) und den zweiten Rohrabschnitt (24) verbindendes Gelenk (22) und eine Antriebseinrichtung (36) zum Auslenken des freien Endes (26) des zweiten Rohrabschnitts (24) in einer quer zur Längsrichtung (16) verlaufenden Querrichtung (34). 1 . Apparatus for applying a viscous material to a applicator tube (14) delimiting an application channel (30) extending from a material inlet opening (20) to a material outlet opening (28) in a longitudinal direction (16) and having an applicator tube (14) at least partially receiving one Material supply port (32) for the viscous material having housing (12), wherein the applicator tube (14) has a fixed housing, the material inlet opening (20) having first pipe section (18) and one of the first pipe section (18) adjoining, at a free end (26) has the material outlet opening (28) having second pipe section (24), characterized by a first pipe section (18) and the second pipe section (24) connecting joint (22) and a drive means (36) for deflecting the free end (26 ) of the second tubular section (24) in a transverse direction (34) extending transversely to the longitudinal direction (16).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Gelenk (22) ein Kugelgelenk, ein Kardangelenk oder ein Gelenk mit einem den ersten Rohrabschnitt (18) mit dem zweiten Rohrabschnitt (24) verbindenden elastischen Verbindungselement ist. 2. Apparatus according to claim 1, characterized in that the joint (22) is a ball joint, a universal joint or a joint with a first pipe section (18) with the second pipe section (24) connecting the elastic connecting element.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Antriebseinrichtung (36) mindestens einen fest mit dem zweiten Rohrabschnitt (24) verbundenen und radial abstehenden Ausleger (38) sowie mindestens zwei mittels jeweils eines Stellglieds (44) bewegbare Betätigungselemente (42) zur Beaufschlagung des mindestens einen Auslegers (38) an verschiedenen Beaufschlagungsstellen (40) aufweist. 3. Apparatus according to claim 1 or 2, characterized in that the drive device (36) at least one fixed to the second pipe section (24) and radially projecting boom (38) and at least two by means of an actuator (44) movable actuating elements (42) for acting on the at least one arm (38) at different Beaufschlagungsstellen (40).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Antriebseinrichtung (36) mindestens drei Betätigungselemente (42) aufweist. 4. Apparatus according to claim 3, characterized in that the drive device (36) has at least three actuating elements (42).
5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Betätigungselemente (42) und die Beaufschlagungsstellen (40) jeweils in konstanten Winkelabständen zueinander bezüglich einer Längsmittelachse des Auftragsrohrs (14) angeordnet sind. 5. Apparatus according to claim 3 or 4, characterized in that the actuating elements (42) and the Beaufschlagungsstellen (40) in each case at constant angular intervals with respect to a longitudinal center axis of the applicator tube (14) are arranged.
6. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Betätigungselemente (42) hin und her bewegliche, auf dem mindestens einen Ausleger (38) an den Beaufschlagungsstellen (40) lose aufliegende Stößel sind. 6. Device according to one of claims 3 to 5, characterized in that the actuating elements (42) movable back and forth, on the at least one arm (38) at the Beaufschlagungsstellen (40) loosely resting plunger.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass jedem Stößel (42) eine Rückstellfeder zur Beaufschlagung des mindestens eines Auslegers (38) mit einer zum Stößel (42) hin gerichteten Rückstellkraft zugeordnet ist. 7. The device according to claim 6, characterized in that each plunger (42) is associated with a return spring for acting on the at least one cantilever (38) with a return to the plunger (42) directed return force.
8. Vorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass die Stellglieder (44) Schwingspulen sind. 8. Device according to one of claims 3 to 7, characterized in that the actuators (44) are voice coils.
9. Vorrichtung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, dass die Antriebseinrichtung (36) eine der Zahl der Betätigungselemente (42) entsprechende Zahl von im Winkelabstand zueinander radial abstehenden Auslegern (38) in Form von Auslagerarmen aufweist. 9. Device according to one of claims 3 to 8, characterized in that the drive device (36) has one of the number of actuating elements (42) corresponding number of angularly spaced from each other radially projecting arms (38) in the form of Auslagerarmen.
10. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch ein Nadelventil (46) zum Verschließen des Auftragsrohrs (14), dessen Ventilsitz (50) im ersten Rohrabschnitt (18) angeordnet ist. 10. Device according to one of the preceding claims, characterized by a needle valve (46) for closing the applicator tube (14) whose valve seat (50) in the first tube section (18) is arranged.
1 1 . Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Na- del (48) des Nadelventils (46) einen sich in den zweiten Rohrabschnitt1 1. Apparatus according to claim 10, characterized in that the needle (48) of the needle valve (46) into the second pipe section
(24) erstreckenden Fortsatz (52) aufweist. (24) extending extension (52).
EP17723365.7A 2016-06-23 2017-05-12 Device for applying a viscous material Active EP3475000B1 (en)

Applications Claiming Priority (2)

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DE102016007638.0A DE102016007638A1 (en) 2016-06-23 2016-06-23 Device for applying a viscous material
PCT/EP2017/061440 WO2017220251A1 (en) 2016-06-23 2017-05-12 Device for applying a viscous material

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KR (1) KR102328821B1 (en)
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DE102022107153A1 (en) * 2022-03-25 2023-09-28 Atlas Copco Ias Gmbh Device for applying a viscous material

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DE102016007638A1 (en) 2017-12-28
EP3475000B1 (en) 2020-04-08
CN109414719A (en) 2019-03-01
KR102328821B1 (en) 2021-11-18
US20190270099A1 (en) 2019-09-05
KR20190021239A (en) 2019-03-05
CN109414719B (en) 2021-01-08
WO2017220251A1 (en) 2017-12-28

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