EP3444039B1 - Application device for viscous material - Google Patents

Application device for viscous material Download PDF

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Publication number
EP3444039B1
EP3444039B1 EP18185100.7A EP18185100A EP3444039B1 EP 3444039 B1 EP3444039 B1 EP 3444039B1 EP 18185100 A EP18185100 A EP 18185100A EP 3444039 B1 EP3444039 B1 EP 3444039B1
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EP
European Patent Office
Prior art keywords
shaft
application device
bore
annular groove
outlet
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Application number
EP18185100.7A
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German (de)
French (fr)
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EP3444039A1 (en
Inventor
Jörn Bielenberg
Lev Lamm
Mathias Andre
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Exel Industries SA
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Exel Industries SA
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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
    • 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
    • B05C5/0229—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 the valve being a gate valve or a sliding valve
    • B05C5/0233—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 the valve being a gate valve or a sliding valve rotating valve, e.g. rotating perforated cylinder
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1026—Valves

Definitions

  • the present invention relates to an application device for applying viscous material, in particular adhesives or sealants, with a housing with an inlet for the viscous material and a bore that merges into an outlet for the viscous material.
  • the bore of the housing is stepped and has a first annular groove that is connected to the inlet, as well as a second annular groove, offset in the outlet direction, with a diameter that changes in the circumferential direction, which merges into the outlet, with a shaft in the bore is rotatably mounted, which has at least one longitudinally axially arranged longitudinal groove which connects the first annular groove and the second annular groove of the bore with one another, so that due to the angular alignment of the shaft within the bore a variable opening cross-section is created.
  • the radius or the diameter of the second annular groove is therefore not constant with reference to a polar coordinate system, but rather is variable as a function of the polar angle.
  • the decisive opening cross-section of the outlet or the connection between the inlet and outlet can thus be set selectively through a quickly and precisely controllable rotation of the shaft, which is why the amount of viscous material dispensed per unit of time can be changed and set quickly and precisely.
  • the second annular groove has at least one area, preferably two areas, in which the distance between the shaft and the outer surface of the bore increases continuously or gradually in the radial direction from a minimum to a maximum.
  • the continuous or incremental increase in the distance between the shaft and the outer surface of the bore and thus the opening cross-section enables a finely adjustable change in the delivery rate per unit of time when the shaft is rotated in one direction, while a rotation in the other direction causes a sudden increase in the delivery rate per unit of time Time unit allows because the groove or the grooves of the shaft can be rotated directly into the position that has the greatest distance from the shaft to the outer surface of the bore. By rotating the shaft between the corresponding positions, the thickness of the applied adhesive bead can be changed quickly and precisely.
  • the longitudinal grooves of the shaft are closed by the outer surface of the first and second annular grooves, so that the opening cross-section disappears and a connection to the outlet is blocked. In this position, no viscous material can enter the second annular groove from the longitudinal grooves inside the shaft, which is why the discharge of viscous material is blocked in this position.
  • the stepped bore can be made directly inside the housing.
  • the stepped bore with the first and the second annular groove is made in a bushing which can be connected non-rotatably to the housing of the application device.
  • a socket can be easily produced outside the housing and is also easy to dismantle for cleaning purposes, so that the use of a socket has proven to be advantageous.
  • an anti-rotation device is provided, which can be designed, for example, in the form of a grub screw which passes through the housing of the application device and engages in a bore in the socket.
  • a groove guide for the bushing is provided within the recess of the housing in which the bushing rests.
  • a drive motor is preferably provided to drive the shaft in both directions of rotation, it being possible for a coupling to be arranged between the drive motor and the shaft.
  • Such a motor enables precise control of the shaft and exact rotation in order to precisely and quickly adjust the opening cross-section of the outlet according to the specifications.
  • the application device can preferably be connected to a robot arm so that the adhesive bead can be applied fully automatically in the correct position and with the correct amount of adhesive. Alternatively, it is also provided that the application device is hand-operated.
  • a nozzle is formed at the outlet of the application device.
  • FIG Fig. 1 A specific embodiment of an application device 1 is shown in FIG Fig. 1 shown.
  • the application device 1 has a housing 2 with a nozzle 3 which merges into an outlet 4.
  • the housing 2 has a bore 5 in which a shaft 6 is rotatably mounted.
  • the shaft 6 extends through a stepped bore 5 'at the outlet end of the housing 2, which in the illustrated embodiment is formed within a socket 7, the socket 7 being rotatably mounted in a recess 8 of the housing 2.
  • a grub screw 18 is provided in the illustrated embodiment, which passes through a recess 19 of the housing 2 and engages in a bore 20 of the bush 7.
  • the stepped bore 5 ′ has a first annular groove 9 which is connected to an inlet 10. Viscous material is fed to the housing 2 and consequently to the application device 1 via the inlet 10 with a feed device (not shown).
  • the stepped bore 5 ′ has a second annular groove 11 which has a diameter that changes over the circumference and is therefore not constant or variable and which merges directly into the outlet 4.
  • a shoulder 12 is formed between the first annular groove 9 and the second annular groove 11.
  • the shaft 6, which passes through the bores 5, 5 ', has two longitudinal grooves 13, 13' in the illustrated embodiment, which create a hydraulic connection between the first annular groove 9 and the second annular groove 11. A direct connection between the first annular groove 9 and the second annular groove 11 is also blocked by the shoulder 12.
  • the opening cross-section for the discharge of the viscous Materials can be set and changed. With at least one angular alignment of the grooves 13, 13 'with respect to the bore 5', it is provided that the opening cross-section disappears and the hydraulic connection between the inlet 10 and the outlet 4 is interrupted. Starting from this position, a rotation of the shaft 6 in one direction allows a continuous enlargement of the opening cross-section, while a rotation of the shaft 6 in the other direction causes a sudden enlargement of the opening cross-section, so that a maximum delivery amount of the viscous material is immediately possible.
  • the application device 1 has a drive motor 14 which is connected to the shaft 6 via a coupling (not shown).
  • the application device can be hand-operated or connected to a robot arm 15.
  • the setting of the opening cross-section is based on the Figures 2a-e made clear.
  • the Figures 2a and b each show a bushing 7 with the stepped bore 5 ′ introduced therein, through which the rotatable shaft 6 extends. Regardless of the angular alignment between the shaft 6 and the socket 7, the viscous material to be applied passes from the inlet 10 into the first annular groove 9.
  • the cross-sectional view AA ( Figure 2c ) shows that the first annular groove 9 is at a sufficient distance from the shaft for this purpose.
  • the cross-sectional view BB ( Fig. 2d ) shows the exemplary setting Fig. 2a in a top view. In the angular alignment shown between shaft 6 and bushing 7, the opening cross-section is open and the inlet 10 is hydraulically connected to the outlet.
  • Figure 2b shows an angular alignment between the shaft 6 and the bush 7 in which the grooves 13, 13 'are closed by the outer surface of the second annular groove 11 (compare cross section CC; Fig. 2e ).
  • a clockwise rotation (direction of arrow 16) of the shaft 6 results in a gradual enlargement of the opening cross-section and consequently of the amount dispensed per unit of time.
  • a left-hand rotation (direction of arrow 17) of the shaft 6, opens the opening cross-section abruptly, so that the maximum opening cross-section and therefore the maximum dispensing amount per unit of time is immediately available.

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Description

Applikationsvorrichtung für viskoses MaterialApplication device for viscous material

Die vorliegende Erfindung betrifft eine Applikationsvorrichtung zum Auftragen von viskosem Material, insbesondere von Kleb- oder Dichtstoffen, mit einem Gehäuse mit einem Einlass für das viskose Material und einer Bohrung, die in einen Auslass für das viskose Material übergeht.The present invention relates to an application device for applying viscous material, in particular adhesives or sealants, with a housing with an inlet for the viscous material and a bore that merges into an outlet for the viscous material.

Mittels derartiger Applikationsvorrichtungen werden üblicherweise lange Klebstoffraupen oder -bahnen auf Werkstücken appliziert, die anschließend mit anderen Werkstücken verbunden werden. Insbesondere in der Automobilindustrie werden Roboter eingesetzt, die Klebstoffraupen mittels solcher Applikationsvorrichtungen auftragen. Vergleichbare Applikationsvorrichtungen sind beispielsweise in DE 20 2017 000784 U1 , DE 103 45 840 A1 und DE 10 2014 014 592 A1 beschrieben.By means of such application devices, long adhesive beads or strips are usually applied to workpieces, which are then connected to other workpieces. In the automotive industry in particular, robots are used that apply adhesive beads by means of such application devices. Comparable application devices are for example in DE 20 2017 000784 U1 , DE 103 45 840 A1 and DE 10 2014 014 592 A1 described.

Für bestimmte Anwendungszwecke ist es erforderlich, dass die Klebstoffraupe eine unterschiedliche Dicke aufweist, weshalb an bestimmten Stellen eine größere Menge an Klebstoff appliziert werden muss. Hierzu sind im Stand der Technik unterschiedliche Lösungen bekannt, die jedoch nur eine langsame Reaktionszeit bei der Veränderung der Abgabemenge pro Zeiteinheit aufweisen.For certain applications it is necessary that the adhesive bead has a different thickness, which is why a larger amount of adhesive has to be applied at certain points. To this end, different solutions are known in the prior art, but they only have a slow reaction time when the amount dispensed per unit of time is changed.

Es ist daher die Aufgabe der vorliegenden Erfindung eine Applikationsvorrichtung für viskoses Material anzugeben, die eine schnelle Änderung der Abgabemenge eines viskosen Materials pro Zeiteinheit erlaubt.It is therefore the object of the present invention to provide an application device for viscous material which allows a rapid change in the amount of a viscous material dispensed per unit of time.

Diese Aufgabe wird durch die Applikationsvorrichtung nach Anspruch 1 gelöst. Erfindungsgemäß ist die Bohrung des Gehäuses gestuft ausgebildet und weist eine erste Ringnut auf, die mit dem Einlass verbunden ist, sowie eine in Auslassrichtung versetzt angeordnete zweite Ringnut mit einem sich in Umfangsrichtung verändernden Durchmesser, die in den Auslass übergeht, wobei in der Bohrung eine Welle rotierbar gelagert ist, die mindestens eine längsaxial angeordnete Längsnut aufweist, die die erste Ringnut und die zweite Ringnut der Bohrung miteinander verbindet, so dass durch die angulare Ausrichtung der Welle innerhalb der Bohrung ein variabler Öffnungsquerschnitt entsteht. Der Radius beziehungsweise der Durchmesser der zweiten Ringnut ist mit Bezug auf ein Polarkoordinatensystem daher nicht konstant, sondern in Abhängigkeit des Polarwinkels variabel. Durch eine schnell und präzise steuerbare Rotation der Welle lässt sich somit der maßgebliche Öffnungsquerschnitt des Auslasses beziehungsweise der Verbindung zwischen Ein- und Auslass wählbar einstellen, weshalb die Abgabemenge von viskosem Material pro Zeiteinheit schnell und exakt geändert und eingestellt werden kann.This object is achieved by the application device according to claim 1. According to the invention, the bore of the housing is stepped and has a first annular groove that is connected to the inlet, as well as a second annular groove, offset in the outlet direction, with a diameter that changes in the circumferential direction, which merges into the outlet, with a shaft in the bore is rotatably mounted, which has at least one longitudinally axially arranged longitudinal groove which connects the first annular groove and the second annular groove of the bore with one another, so that due to the angular alignment of the shaft within the bore a variable opening cross-section is created. The radius or the diameter of the second annular groove is therefore not constant with reference to a polar coordinate system, but rather is variable as a function of the polar angle. The decisive opening cross-section of the outlet or the connection between the inlet and outlet can thus be set selectively through a quickly and precisely controllable rotation of the shaft, which is why the amount of viscous material dispensed per unit of time can be changed and set quickly and precisely.

Bevorzugte Ausführungsformen der vorliegenden Erfindung werden nachfolgend und in den Unteransprüchen angegeben.Preferred embodiments of the present invention are given below and in the subclaims.

Nach einer ersten bevorzugten Ausgestaltung ist vorgesehen, dass die zweite Ringnut mindestens einen Bereich, vorzugsweise zwei Bereiche aufweist, in denen sich der Abstand zwischen der Welle und der Mantelfläche der Bohrung in radialer Richtung von einem Minimum zu einem Maximum kontinuierlich oder stufenweise vergrößert. Die kontinuierliche oder stufenweise Vergrößerung des Abstands zwischen der Welle und der Mantelfläche der Bohrung und mithin des Öffnungsquerschnitts ermöglicht eine fein einstellbare Änderung der Abgabemenge pro Zeiteinheit bei einer Rotation der Welle in eine Richtung, während eine Rotation in die andere Richtung eine sprunghafte Erhöhung der Abgabemenge pro Zeiteinheit ermöglicht, weil die Nut beziehungsweise die Nuten der Welle unmittelbar in die Position gedreht werden können, die den größten Abstand von der Welle zur Mantelfläche der Bohrung aufweisen. Durch eine Drehung der Welle zwischen entsprechenden Positionen lässt sich die Dicke der applizierten Klebstoffraupe schnell und präzise verändern.According to a first preferred embodiment, it is provided that the second annular groove has at least one area, preferably two areas, in which the distance between the shaft and the outer surface of the bore increases continuously or gradually in the radial direction from a minimum to a maximum. The continuous or incremental increase in the distance between the shaft and the outer surface of the bore and thus the opening cross-section enables a finely adjustable change in the delivery rate per unit of time when the shaft is rotated in one direction, while a rotation in the other direction causes a sudden increase in the delivery rate per unit of time Time unit allows because the groove or the grooves of the shaft can be rotated directly into the position that has the greatest distance from the shaft to the outer surface of the bore. By rotating the shaft between the corresponding positions, the thickness of the applied adhesive bead can be changed quickly and precisely.

Vorzugsweise ist vorgesehen, dass in mindestens einer angularen Position der Welle innerhalb der Bohrung die Längsnuten der Welle von der Mantelfläche der ersten und der zweiten Ringnut verschlossen sind, so dass der Öffnungsquerschnitt verschwindet und eine Verbindung zum Auslass gesperrt ist. In dieser Position kann kein viskoses Material von den Längsnuten innerhalb der Welle in die zweite Ringnut eintreten, weshalb die Abgabe von viskosem Material in dieser Position gesperrt ist.It is preferably provided that in at least one angular position of the shaft within the bore, the longitudinal grooves of the shaft are closed by the outer surface of the first and second annular grooves, so that the opening cross-section disappears and a connection to the outlet is blocked. In this position, no viscous material can enter the second annular groove from the longitudinal grooves inside the shaft, which is why the discharge of viscous material is blocked in this position.

Ausgehend von dieser angularen Position der Welle gegenüber der zweiten Ringnut lässt sich durch eine Drehung in eine Richtung eine langsame und kontinuierliche Steigerung der Abgabemenge erzielen, während eine kurze Verdrehung in die entgegengesetzte Richtung den Öffnungsquerschnitt sprunghaft vergrößert, weshalb unmittelbar der größte Öffnungsquerschnitt erreicht ist, was die Abgabemenge von viskosem Material pro Zeiteinheit sprunghaft zu einem Maximum führt.Starting from this angular position of the shaft in relation to the second annular groove, a slow and continuous increase in the delivery rate can be achieved by turning in one direction, while a short turn in the opposite direction increases the opening cross-section by leaps and bounds, which is why the largest opening cross-section is reached immediately the amount of viscous material dispensed per unit of time suddenly leads to a maximum.

Die gestufte Bohrung kann unmittelbar innerhalb des Gehäuses eingebracht sein. Alternativ und nach einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die gestufte Bohrung mit der ersten und der zweiten Ringnut in einer Buchse eingebracht ist, die drehfest mit dem Gehäuse der Applikationsvorrichtung verbindbar ist. Eine solche Buchse lässt sich außerhalb des Gehäuses einfach herstellen und ist zudem zu Reinigungszwecken einfach zu demontieren, so dass sich die Verwendung einer Buchse als vorteilhaft erwiesen hat. Damit die Buchse innerhalb des Gehäuses drehfest gelagert ist, ist eine Verdrehsicherung vorgesehen, die beispielsweise in Form einer Madenschraube ausgebildet sein kann, die das Gehäuse der Applikationsvorrichtung durchgreift und in eine Bohrung der Buchse eingreift. Alternativ ist eine Nutführung der Buchse innerhalb der Ausnehmung des Gehäuses vorgesehen, in der die Buchse ruht.The stepped bore can be made directly inside the housing. Alternatively and according to a preferred embodiment of the invention, it is provided that the stepped bore with the first and the second annular groove is made in a bushing which can be connected non-rotatably to the housing of the application device. Such a socket can be easily produced outside the housing and is also easy to dismantle for cleaning purposes, so that the use of a socket has proven to be advantageous. So that the socket is mounted in a rotationally fixed manner within the housing, an anti-rotation device is provided, which can be designed, for example, in the form of a grub screw which passes through the housing of the application device and engages in a bore in the socket. Alternatively, a groove guide for the bushing is provided within the recess of the housing in which the bushing rests.

Zum Antrieb der Welle in beide Drehrichtungen ist vorzugsweise ein Antriebsmotor vorgesehen, wobei zwischen dem Antriebsmotor und der Welle eine Kupplung angeordnet sein kann. Ein solcher Motor ermöglicht die präzise Steuerung der Welle und eine exakte Verdrehung, um den Öffnungsquerschnitt des Auslasses den Vorgaben entsprechend präzise und schnell einzustellen.A drive motor is preferably provided to drive the shaft in both directions of rotation, it being possible for a coupling to be arranged between the drive motor and the shaft. Such a motor enables precise control of the shaft and exact rotation in order to precisely and quickly adjust the opening cross-section of the outlet according to the specifications.

Vorzugsweise ist die Applikationsvorrichtung mit einem Roboterarm verbindbar, so dass die Klebstoffraupe vollautomatisch in der richtigen Position und mit der richtigen Menge an Klebstoff aufgetragen werden kann. Alternativ ist auch vorgesehen, dass die Applikationsvorrichtung handgeführt ist.The application device can preferably be connected to a robot arm so that the adhesive bead can be applied fully automatically in the correct position and with the correct amount of adhesive. Alternatively, it is also provided that the application device is hand-operated.

Schließlich ist nach einer bevorzugten Ausführungsform der Erfindung vorgesehen, dass am Auslass der Applikationsvorrichtung eine Düse ausgebildet ist.Finally, according to a preferred embodiment of the invention, it is provided that a nozzle is formed at the outlet of the application device.

Eine konkrete Ausführungsform der vorliegenden Erfindung wird nachfolgend anhand der Figuren erläutert. Es zeigen:

Fig. 1
eine Querschnittsdarstellung einer Applikationsvorrichtung und
Fig. 2a-e
Querschnittsdarstellungen einer Buchse.
A specific embodiment of the present invention is explained below with reference to the figures. Show it:
Fig. 1
a cross-sectional view of an application device and
Figures 2a-e
Cross-sectional views of a socket.

Eine konkrete Ausführungsform einer Applikationsvorrichtung 1 ist in Fig. 1 dargestellt. Die Applikationsvorrichtung 1 besitzt ein Gehäuse 2 mit einer Düse 3, die in einen Auslass 4 übergeht. Das Gehäuse 2 weist eine Bohrung 5 auf, in der eine Welle 6 drehbar gelagert ist. Im dargestellten Ausführungsbeispiel durchgreift die Welle 6 am auslassseitigen Ende des Gehäuses 2 eine gestufte Bohrung 5', die im dargestellten Ausführungsbeispiel innerhalb einer Buchse 7 ausgebildet ist, wobei die Buchse 7 in einer Ausnehmung 8 des Gehäuses 2 drehfest gelagert ist. Zur drehfesten Lagerung der Buchse 7 ist im dargestellten Ausführungsbeispiel eine Madenschraube 18 vorgesehen, die eine Ausnehmung 19 des Gehäuses 2 durchgreift und in eine Bohrung 20 der Buchse 7 eingreift. Die gestufte Bohrung 5' besitzt eine erste Ringnut 9, die mit einem Einlass 10 verbunden ist. Über den Einlass 10 wird viskoses Material mit einer (nicht gezeigten) Zuführeinrichtung dem Gehäuse 2 und mithin der Applikationsvorrichtung 1 zugeführt. Die gestufte Bohrung 5' besitzt eine zweite Ringnut 11, die einen sich über den Umfang verändernden und daher nicht konstanten beziehungsweise variablen Durchmesser aufweist und die unmittelbar in den Auslass 4 übergeht. Zwischen der ersten Ringnut 9 und der zweiten Ringnut 11 ist eine Schulter 12 ausgebildet. Die Welle 6, die die Bohrungen 5, 5' durchgreift, weist im dargestellten Ausführungsbeispiel zwei Längsnuten 13, 13' auf, die eine hydraulische Verbindung zwischen der ersten Ringnut 9 und der zweiten Ringnut 11 schafft. Eine unmittelbare Verbindung zwischen der ersten Ringnut 9 und der zweiten Ringnut 11 ist im Übrigen durch die Schulter 12 blockiert. Durch den variablen Durchmesser der zweiten Ringnut 11 kann mittels einer Rotation der Welle 6 der Öffnungsquerschnitt zur Abgabe des viskosen Materials eingestellt und verändert werden. Dabei ist bei mindestens einer angularen Ausrichtung der Nuten 13, 13' gegenüber der Bohrung 5' vorgesehen, dass der Öffnungsquerschnitt verschwindet und die hydraulische Verbindung zwischen dem Einlass 10 und dem Auslass 4 unterbrochen ist. Von dieser Position ausgehend erlaubt eine Rotation der Welle 6 in eine Richtung eine kontinuierliche Vergrößerung des Öffnungsquerschnitts, während eine Rotation der Welle 6 in die andere Richtung eine sprunghafte Vergrößerung des Öffnungsquerschnitts bewirkt, so dass unmittelbar eine maximale Abgabemenge des viskosen Materials möglich ist.A specific embodiment of an application device 1 is shown in FIG Fig. 1 shown. The application device 1 has a housing 2 with a nozzle 3 which merges into an outlet 4. The housing 2 has a bore 5 in which a shaft 6 is rotatably mounted. In the illustrated embodiment, the shaft 6 extends through a stepped bore 5 'at the outlet end of the housing 2, which in the illustrated embodiment is formed within a socket 7, the socket 7 being rotatably mounted in a recess 8 of the housing 2. For the non-rotatable mounting of the bush 7, a grub screw 18 is provided in the illustrated embodiment, which passes through a recess 19 of the housing 2 and engages in a bore 20 of the bush 7. The stepped bore 5 ′ has a first annular groove 9 which is connected to an inlet 10. Viscous material is fed to the housing 2 and consequently to the application device 1 via the inlet 10 with a feed device (not shown). The stepped bore 5 ′ has a second annular groove 11 which has a diameter that changes over the circumference and is therefore not constant or variable and which merges directly into the outlet 4. A shoulder 12 is formed between the first annular groove 9 and the second annular groove 11. The shaft 6, which passes through the bores 5, 5 ', has two longitudinal grooves 13, 13' in the illustrated embodiment, which create a hydraulic connection between the first annular groove 9 and the second annular groove 11. A direct connection between the first annular groove 9 and the second annular groove 11 is also blocked by the shoulder 12. Due to the variable diameter of the second annular groove 11, by means of a rotation of the shaft 6, the opening cross-section for the discharge of the viscous Materials can be set and changed. With at least one angular alignment of the grooves 13, 13 'with respect to the bore 5', it is provided that the opening cross-section disappears and the hydraulic connection between the inlet 10 and the outlet 4 is interrupted. Starting from this position, a rotation of the shaft 6 in one direction allows a continuous enlargement of the opening cross-section, while a rotation of the shaft 6 in the other direction causes a sudden enlargement of the opening cross-section, so that a maximum delivery amount of the viscous material is immediately possible.

Zur Steuerung der Welle 6 besitzt die Applikationsvorrichtung 1 einen Antriebsmotor 14, der über eine nicht dargestellte Kupplung mit der Welle 6 verbunden ist. Die Applikationsvorrichtung kann handgeführt sein oder mit einem Roboterarm 15 verbunden sein.To control the shaft 6, the application device 1 has a drive motor 14 which is connected to the shaft 6 via a coupling (not shown). The application device can be hand-operated or connected to a robot arm 15.

Die Einstellung des Öffnungsquerschnitts wird anhand der Fig. 2a-e verdeutlicht. Die Fig. 2a und b zeigen jeweils eine Buchse 7 mit der hierin eingebrachten gestuften Bohrung 5', die von der drehbaren Welle 6 durchgriffen wird. Unabhängig von der angularen Ausrichtung zwischen der Welle 6 und der Buchse 7 gelangt das zu applizierende viskose Material von dem Einlass 10 in die erste Ringnut 9. Die Querschnittsdarstellung A-A (Fig. 2c) zeigt, dass die erste Ringnut 9 hierfür einen ausreichenden Abstand zur Welle aufweist.The setting of the opening cross-section is based on the Figures 2a-e made clear. The Figures 2a and b each show a bushing 7 with the stepped bore 5 ′ introduced therein, through which the rotatable shaft 6 extends. Regardless of the angular alignment between the shaft 6 and the socket 7, the viscous material to be applied passes from the inlet 10 into the first annular groove 9. The cross-sectional view AA ( Figure 2c ) shows that the first annular groove 9 is at a sufficient distance from the shaft for this purpose.

Von der ersten Ringnut 9 ausgehend gelangt das viskose Material in die Längsnuten 13, 13', die in die Welle 6 eingebracht sind. Die Querschnittsdarstellung B-B (Fig. 2d) zeigt die beispielhafte Einstellung aus Fig. 2a in einer Draufsicht. Bei der gezeigten angularen Ausrichtung zwischen Welle 6 und Buchse 7 ist der Öffnungsquerschnitt geöffnet und der Einlass 10 ist mit dem Auslass hydraulisch verbunden.Starting from the first annular groove 9, the viscous material passes into the longitudinal grooves 13, 13 ′ which are made in the shaft 6. The cross-sectional view BB ( Fig. 2d ) shows the exemplary setting Fig. 2a in a top view. In the angular alignment shown between shaft 6 and bushing 7, the opening cross-section is open and the inlet 10 is hydraulically connected to the outlet.

Fig. 2b zeigt demgegenüber eine angulare Ausrichtung zwischen der Welle 6 und der Buchse 7 bei der die Nuten 13, 13' von der Mantelfläche der zweiten Ringnut 11 verschlossen sind (vergleiche Querschnitt C-C; Fig. 2e). Bei dieser Einstellung ist die hydraulische Verbindung zwischen dem Einlass 10 und dem Auslass 4 blockiert. Von dieser Position ausgehend wirkt eine Rechtsdrehung (Pfeilrichtung 16) der Welle 6 eine allmähliche Vergrößerung des Öffnungsquerschnitts und mithin der Abgabemenge pro Zeiteinheit. Eine Linksdrehung (Pfeilrichtung 17) der Welle 6 hingegen öffnet den Öffnungsquerschnitt abrupt, so dass unmittelbar der maximale Öffnungsquerschnitt und mithin die maximale Abgabemenge pro Zeiteinheit zur Verfügung steht. Figure 2b In contrast, shows an angular alignment between the shaft 6 and the bush 7 in which the grooves 13, 13 'are closed by the outer surface of the second annular groove 11 (compare cross section CC; Fig. 2e ). With this setting the hydraulic connection between inlet 10 and outlet 4 blocked. Starting from this position, a clockwise rotation (direction of arrow 16) of the shaft 6 results in a gradual enlargement of the opening cross-section and consequently of the amount dispensed per unit of time. A left-hand rotation (direction of arrow 17) of the shaft 6, on the other hand, opens the opening cross-section abruptly, so that the maximum opening cross-section and therefore the maximum dispensing amount per unit of time is immediately available.

Claims (7)

  1. Application device for applying viscous material, in particular adhesives or sealants, comprising a housing (2) having an inlet for the viscous material and a bore (5') which transitions into an outlet (4) for the viscous material, characterized in that the bore (5') is stepped and has a first annular groove (9) which is connected to the inlet (10), and a second annular groove (11) which is arranged so as to be offset in the outlet direction and has a diameter which changes in the circumferential direction and transitions into the outlet (4), a shaft (6) being rotatably mounted in the bore (5'), which shaft has at least one longitudinally axially arranged longitudinal groove (13, 13') which connects the first annular groove (9) and the second annular groove (11) of the bore (5') to one another such that the angular orientation of the shaft (6) within the bore (5') creates a variable opening cross section.
  2. Application device according to claim 1, characterized in that the second annular groove (11) has at least one region, preferably two regions, in which the distance between the shaft (6) and the lateral surface of the bore (5') increases continuously or in steps in the radial direction from a minimum to a maximum.
  3. Application device according to either claim 1 or claim 2, characterized in that, in at least one angular position of the shaft (6) within the bore (5'), the longitudinal grooves (13, 13') of the shaft are closed by the lateral surface of the second annular groove (11), such that the opening cross-section disappears and a connection to the outlet (4) is blocked.
  4. Application device according to any of claims 1 to 3, characterized in that the stepped bore (5') having the first and second annular grooves (9, 11) is introduced into a bushing (7) which can be non-rotatably connected to the housing (2) of the application device (1).
  5. Application device according to any of claims 1 to 4, characterized in that a drive motor (14) is provided to drive the shaft (6) in both directions of rotation.
  6. Application device according to any of claims 1 to 5, characterized in that the application device (1) can be connected to a robot arm (15).
  7. Application device according to any of claims 1 to 6, characterized in that the outlet (4) is designed as a nozzle (3).
EP18185100.7A 2017-08-18 2018-07-24 Application device for viscous material Active EP3444039B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017118942.4A DE102017118942A1 (en) 2017-08-18 2017-08-18 Application device for viscous material

Publications (2)

Publication Number Publication Date
EP3444039A1 EP3444039A1 (en) 2019-02-20
EP3444039B1 true EP3444039B1 (en) 2021-06-16

Family

ID=63041830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18185100.7A Active EP3444039B1 (en) 2017-08-18 2018-07-24 Application device for viscous material

Country Status (3)

Country Link
EP (1) EP3444039B1 (en)
DE (1) DE102017118942A1 (en)
ES (1) ES2880365T3 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10345840A1 (en) 2003-09-30 2005-04-14 Sca Schucker Gmbh & Co. Kg Device for applying a fluid to the surface of a workpiece used in vehicle construction and in furniture manufacture comprises a feed channel which communicates with a return channel via a distribution path arranged within a shaft
US20060027683A1 (en) * 2004-08-04 2006-02-09 Marcel Puffe Application head
DE102009019192B4 (en) * 2009-04-28 2014-08-07 Dürr Systems Wolfsburg GmbH Short track gun
DE202012104197U1 (en) * 2012-11-02 2012-11-23 Nimak Gmbh Doser with safety lock cylinder
DE102014014592A1 (en) 2014-10-07 2016-04-07 Sca Schucker Gmbh & Co. Kg Device for applying a viscous material
DE202017000784U1 (en) * 2017-02-14 2017-02-22 TÜNKERS-NICKEL Dosiersysteme GmbH Application head for medium and high viscosity materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102017118942A1 (en) 2019-02-21
EP3444039A1 (en) 2019-02-20
ES2880365T3 (en) 2021-11-24

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