EP1681101B1 - Apparatus for intermittently dispensing fluids - Google Patents
Apparatus for intermittently dispensing fluids Download PDFInfo
- Publication number
- EP1681101B1 EP1681101B1 EP06000253A EP06000253A EP1681101B1 EP 1681101 B1 EP1681101 B1 EP 1681101B1 EP 06000253 A EP06000253 A EP 06000253A EP 06000253 A EP06000253 A EP 06000253A EP 1681101 B1 EP1681101 B1 EP 1681101B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching valve
- coil
- armature
- displaced
- dispensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
- B05B7/1254—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated
- B05B7/1263—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated pneumatically actuated
- B05B7/1272—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means being fluid actuated pneumatically actuated actuated by gas involved in spraying, i.e. exiting the nozzle, e.g. as a spraying or jet shaping gas
- B05B7/1281—Serial arrangement, i.e. a single gas stream acting on the controlling means first and flowing downstream thereof to the nozzle
-
- 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 the intermittent delivery of fluid media of the preamble of claim 1 corresponding type.
- Such devices are used in the industry to apply, in sections, traces of fluid media, particularly adhesives, to a product displaced relative to a fluid medium dispenser. They comprise a dispensing module, which has a fluid channel opening out into a dispensing opening for the fluid medium. Further, a closure element is provided, which is pneumatically actuated between a dispensing opening opening and a dispensing opening occlusive position is displaced.
- the dispensing module is attached to a base body having a fluid channel for supplying the fluid medium and a compressed air channel for supplying compressed air to the dispensing module.
- the closure element is coupled in this device with a pneumatically actuated piston, which is arranged in a cylinder chamber such that a compressed air loading displaces the closure element against the action of a return spring in the dispensing opening opening position.
- the intermittent fluid delivery is effected by intermittently supplying compressed air to the compressed air channel.
- an external compressed air source with a likewise external valve arrangement is required, by means of which pressurized air is supplied to the compressed air channel in the frequency required for the intermittent delivery of the fluid medium.
- a device for applying in particular hot melt adhesive which comprises a gun with a main body to which a conventional electro-pneumatically actuable solenoid valve is screwed laterally and / or above.
- the invention is therefore based on the object, one from the US 5407101 A develop known device such that the actuation frequency of the closure element is increased.
- a closure member exhibiting switching valve is housed, which is turned on and suitable in the compressed air passage of the body to control the dispensing module supplied compressed air so that the closure element in dependence of the applied operating voltage between the dispensing opening opening and the position closing the discharge opening is displaced, the volume of air which must be filled with compressed air to open the closure element of the delivery module is substantially reduced compared to the prior art.
- the result is that smaller amounts of air are required to build up the pneumatic pressure required for the actuation operation in the dispensing module, thereby reducing the amount of time needed to build up the pressure.
- the device according to the invention over the prior art due to the integration of the switching valve in the body more compact Outside dimensions, which facilitates the use of the device in industrial equipment, such as in gluing machines.
- the switching valve comprises a coil for generating an electromagnetic Field and a movable means of the electromagnetic field armature, which is coupled to a closure member of the switching valve.
- a particularly high efficiency is achieved when the coil is arranged around a portion of a pole and around a portion of the armature, as a result of which the coupling of the armature to the electromagnetic field is particularly effective.
- the coupling can be further improved if the switching valve comprises a flux guide element which distributes the flow between the pole and the armature such that the closure element of the switching valve is displaced into the open position.
- the flux guide element may have a non-circular cross-section. It is particularly preferred if it has a rectangular cross-section, since it can then be configured adapted to the outer contour of the two mutually parallel running, planar sides having body.
- the switching valve comprises means which generate restoring forces, which displace the closure member in the closed position when no actuation voltage is applied. This measure prevents uncontrolled leaking fluid from the discharge opening when the operating voltage collapses, for example due to a technical defect.
- the masses moved during the actuation of the switching valve can be reduced if the switching valve is designed in such a way that the restoring forces are generated by the compressed air. However, it is preferred to effect the restoring forces by means of a return spring.
- the base body comprises a heating element.
- the device is then also suitable to hot melt adhesive, which unfolds its adhesive effect during solidification, apply, as it is commonly used industrially.
- the maximum operating temperature of the device according to the invention under which a fluid medium can be discharged, is limited by the heat resistance of commercially available coils. An increase in the maximum operating temperature is possible, are provided in the means for cooling the coil. However, it is particularly preferred if the Spuie comprises a winding of a coil provided with a heat-resistant insulation coil wire, as this can be dispensed with complex means for cooling the coil.
- the closure element of the dispensing module is preferably coupled to a pneumatically operated differential piston in which the restoring forces are generated by a permanently applied pneumatic pressure.
- the actuating forces for displacing the closure element to open the discharge opening are effected by the fact that upon actuation of the switching valve, the pneumatic pressure is directed to a surface of the differential piston, which is larger than the surface causing the restoring forces and aligned so that the actuating forces counteract the restoring forces.
- an auxiliary spring acting on the differential piston is preferably additionally provided, which displaces the closure element in the closed position at non-applied pneumatic pressure. This avoids that uncontrolled fluid escapes from the discharge opening when the pneumatic pressure should collapse.
- the device 100 as a whole, comprises a dispensing module 1, which has a housing 2 with a rectangular cross-section.
- a cylinder chamber 3 is formed, which has the shape of a stepped bore.
- a differential piston 4 is arranged with two piston surfaces of different diameters such that the piston surface 5 closes tightly with the smaller diameter with the cylinder wall of the part 6 of the cylinder chamber 3 with the smaller diameter.
- the piston surface 7 closes tightly with the part 8 of the cylinder chamber 3, which has the larger diameter.
- a compression spring 4 ' is supported.
- the differential piston 4 is connected to a closing element 10 extending vertically from the piston surface 7, which passes through a guide bore 11, in which it is guided in a sliding manner, and extends through a fluid channel 12 as far as a delivery opening 13, into which the fluid channel 12 empties.
- the closure element 10 can be displaced by means of the differential piston 4 between a position which opens the dispensing opening and a position which closes the dispensing opening, as will be described below.
- a first compressed air channel 14 opens, the other end to a side wall 15 of the dispensing module 1 in a Opening 16 exits.
- a second compressed air channel 17 opens, the other end also emerges from the side wall 15 in an opening 18.
- the fluid channel 12 is arranged in the housing 2 such that it opens into an opening 19 in the side wall 15.
- the dispensing module 1 is attached with its side wall 15 on the end wall 20 of a base body 21 by a not visible in the drawing screw.
- the main body comprises a fluid channel 22, the first end of which opens into a connection 23 for a fluid supply hose and the second end of which opens into an opening 19 which is congruent to the opening 19 in the dispensing module 1.
- the main body 21 comprises electrical connection means 26 for operating a heating device 24 of known design and an electrically actuatable switching valve 25 which is accommodated in the main body 21.
- the switching valve 25 comprises a coil 27 for generating an electromagnetic field and a displaceable by means of the electromagnetic field armature 28 which is coupled to a closure member 29 of the switching valve 25.
- the switching valve further includes a pole 30 protruding into the interior of the coil from one end.
- the armature 28 is arranged such that a portion thereof projects from the other end into the coil 27.
- the switching valve 25 comprises a flux guide member 31 surrounding the coil and which distributes the flow between the pole 30 and the armature 28 so that the armature 28 is attracted by the pole 30.
- the flux guide element 31 has a rectangular cross-section and an outer contour, which is adapted to theêtachir of the main body 21, that the main body 21 and the flux guide element 31 form flat, rugged outer surfaces.
- a central compressed air channel 32 is further arranged, one end of which opens into connecting means 33 for connecting a compressed air supply line.
- the compressed air channel 32 branches in the base body 21 into a passage 34 which is connected via an opening 16 'to the first compressed air channel 14, and into a channel 35 which can be selectively connected via the closure member 29 with the compressed air channel 32.
- the device according to the invention is shown in a state in which it is located when no operating voltage is applied to the coil 27 and the compressed air channel 32 is acted upon with compressed air.
- the closing member 29 shuts off the channel 35 from the compressed air channel 32 by abutting against a lower sealing ring 29 "of the main body 21, so that pneumatic pressure is applied to the piston surface 5 via the passage 34 and presses the differential piston 4 downwards the closure element 10 is also pressed down and closes the discharge opening 13th
- the differential piston 4 is displaced upwards together with the closure element 10 according to the drawing, whereby the discharge opening 13 is released It is understood that the pneumatic pressure is chosen such that the pressure acting on the piston surfaces 5, 7 Pressure creates a resultant force which is capable of overcoming the force exerted by the compression spring 4 '.
- the armature 28 moves with the closure member 29 in the in the Fig. 1 and 2 shown position due the restoring forces acting on it, which are generated by a return spring 36.
- the return spring 36 is arranged in a provided in the anchor blind hole 37 and rests with its bottom according to the drawing at the bottom 38 of the blind hole 37 from.
- the upper end 39 of the return spring 36 is supported on the lower end face 40 of the pole 30 from.
- the upper sealing ring 29 ' is released.
- the displacement of the differential piston 4 can thus take place exclusively under the action of the applied pneumatic pressure by actuation of the peeling valve 25.
- the compression spring 4 ' is nevertheless provided so that in the event of a collapse of the pneumatic pressure, the differential piston 4 is displaced to its lower position and the discharge opening 13 is closed by the closure element 10 so as to prevent an uncontrolled escape of the fluid medium to be dispensed.
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- Coating Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur intermittierenden Abgabe von fluiden Medien der dem Oberbegriff des Anspruchs 1 entsprechenden Art.The invention relates to a device for the intermittent delivery of fluid media of the preamble of
Derartige Vorrichtungen werden in der Industrie zum abschnittsweisen Auftrag von Spuren von fluiden Medien, insbesondere von Klebstoffen, auf ein relativ zu einer Abgabeeinrichtung für das fluide Medium verlagertes Produkt eingesetzt. Sie umfassen ein Abgabemodul, welches einen in eine Abgabeöffnung mündenden Fluidkanal für das fluide Medium aufweist. Ferner ist ein Verschlusselement vorgesehen, welches pneumatisch betätigt zwischen einer die Abgabeöffnung öffnenden und einer die Abgabeöffnung verschließenden Position verlagerbar ist.Such devices are used in the industry to apply, in sections, traces of fluid media, particularly adhesives, to a product displaced relative to a fluid medium dispenser. They comprise a dispensing module, which has a fluid channel opening out into a dispensing opening for the fluid medium. Further, a closure element is provided, which is pneumatically actuated between a dispensing opening opening and a dispensing opening occlusive position is displaced.
Bei einem aus der
Aus der
Zwar haben sich derartige Vorrichtungen beim industriellen Einsatz bewährt, die maximal mit ihnen erzielbaren Betätigungsfrequenzen des Verschlusselements sind jedoch begrenzt. Dies ist besonders deshalb von Nachteil, weil der Trend zu immer größeren Relativgeschwindigkeiten zwischen dem Produkt und der Vorrichtung zum Zwecke der Erhöhung der Produktivität geht.Although such devices have proven themselves in industrial use, the maximum achievable with them operating frequencies of the closure element are limited. This is particularly disadvantageous because the trend is towards ever greater relative speeds between the product and the device for the purpose of increasing productivity.
Der Erfindung liegt daher die Aufgabe zu Grunde, eine aus der
Diese Aufgabe wird durch die in Anspruch 1 wiedergegebene Vorrichtung gelöst.This object is achieved by the reproduced in
Dadurch, dass in dem Grundkörper ein elektrisch betätigbares, ein Verschlussorgan aufweisendes Schaltventil untergebracht ist, welches in den Druckluftkanal des Grundkörpers eingeschaltet und geeignet ist, die dem Abgabemodul zugeführte Druckluft so zu steuern, dass das Verschlusselement in Abhängigkeit der angelegten Betätigungsspannung zwischen der die Abgabeöffnung öffnenden und der die Abgabeöffnung verschließenden Position verlagert wird, ist das Luftvolumen, welches zum Öffnen des Verschlusselements des Abgabemoduls mit Druckluft gefüllt werden muss, gegenüber dem Stand der Technik wesentlich reduziert. Die Folge ist, dass zum Aufbau des für den Betätigungsvorgang erforderlichen pneumatischen Drucks in dem Abgabemodul geringere Luftmengen erforderlich sind, wodurch die Zeitspanne, die zum Aufbau des Drucks benötigt wird, reduziert ist.Characterized in that in the base body an electrically actuated, a closure member exhibiting switching valve is housed, which is turned on and suitable in the compressed air passage of the body to control the dispensing module supplied compressed air so that the closure element in dependence of the applied operating voltage between the dispensing opening opening and the position closing the discharge opening is displaced, the volume of air which must be filled with compressed air to open the closure element of the delivery module is substantially reduced compared to the prior art. The result is that smaller amounts of air are required to build up the pneumatic pressure required for the actuation operation in the dispensing module, thereby reducing the amount of time needed to build up the pressure.
Ferner erhöht sich durch den steileren Druckanstieg und auch steileren Druckabfall die Bewegungsgeschwindigkeit des Verschlusselements, was zu einer schärferen Begrenzung der Abschnitte der auf ein Produkt aufgetragenen Fluidspuren führt.Furthermore, the steeper increase in pressure and also steeper pressure drop increase the speed of movement of the closure element, which leads to a sharper limitation of the portions of the fluid traces applied to a product.
Schließlich weist die erfindungsgemäße Vorrichtung gegenüber dem Stand der Technik aufgrund der Integration des Schaltventils in den Grundkörper kompaktere Außenabmessungen auf, was den Einsatz der Vorrichtung in industriellen Anlagen, beispielsweise in Beleimungsmaschinen, erleichtert.Finally, the device according to the invention over the prior art due to the integration of the switching valve in the body more compact Outside dimensions, which facilitates the use of the device in industrial equipment, such as in gluing machines.
Bei einer bevorzugten Ausführungsform der erfindungsgemäßen Vorrichtung umfasst das Schaltventil eine Spule zum Erzeugen eines elektromagnetischen Feldes und einen mittels des elektromagnetischen Feldes verlagerbaren Anker, der mit einem Verschlussorgan des Schaltventils gekoppelt ist.In a preferred embodiment of the device according to the invention, the switching valve comprises a coil for generating an electromagnetic Field and a movable means of the electromagnetic field armature, which is coupled to a closure member of the switching valve.
Ein besonders hoher Wirkungsgrad wird erzielt, wenn die Spule um einen Abschnitt eines Pols und um einen Abschnitt des Ankers angeordnet ist, da hierdurch die Ankopplung des Ankers an das elektromagnetische Feld besonders effektiv ist.A particularly high efficiency is achieved when the coil is arranged around a portion of a pole and around a portion of the armature, as a result of which the coupling of the armature to the electromagnetic field is particularly effective.
Die Ankopplung kann darüber hinaus verbessert werden, wenn das Schaltventil ein Flussführungselement umfasst, welches den Fluss zwischen dem Pol und dem Anker so verteilt, dass das Verschlusselement des Schaltventils in die geöffnete Position verlagert wird.The coupling can be further improved if the switching valve comprises a flux guide element which distributes the flow between the pole and the armature such that the closure element of the switching valve is displaced into the open position.
Das Flussführungselement kann einen nicht kreisförmigen Querschnitt aufweisen. Besonders bevorzugt ist es, wenn es einen rechteckigen Querschnitt aufweist, da es dann an die Außenkontur des zwei zueinander parallel verläufende, ebene Seiten aufweisenden Grundkörpers angepasst ausgestaltet werden kann.The flux guide element may have a non-circular cross-section. It is particularly preferred if it has a rectangular cross-section, since it can then be configured adapted to the outer contour of the two mutually parallel running, planar sides having body.
Besonders bevorzugt ist eine Variante der erfindungsgemäßen Vorrichtung, bei der das Schaltventil Mittel umfasst, die Rückstellkräfte erzeugen, die das Verschlussorgan in die geschlossene Position verlagern, wenn keine Betätigungsspannung angelegt ist. Durch diese Maßnahme wird verhindert, dass unkontrolliert fluides Medium aus der Abgabeöffnung austritt, wenn die Betätigungsspannung beispielsweise durch einen technischen Defekt zusammenbricht.Particularly preferred is a variant of the device according to the invention, in which the switching valve comprises means which generate restoring forces, which displace the closure member in the closed position when no actuation voltage is applied. This measure prevents uncontrolled leaking fluid from the discharge opening when the operating voltage collapses, for example due to a technical defect.
Die bei der Betätigung des Schaltventils bewegten Massen können reduziert werden, wenn das Schaltventil derart ausgestaltet ist, dass die Rückstellkräfte von der Druckluft erzeugt werden. Es ist jedoch bevorzugt, die Rückstellkräfte mittels einer Rückstellfeder zu bewirken.The masses moved during the actuation of the switching valve can be reduced if the switching valve is designed in such a way that the restoring forces are generated by the compressed air. However, it is preferred to effect the restoring forces by means of a return spring.
Besonders bevorzugt ist eine Weiterbildung der erfindungsgemäßen Vorrichtung, bei welcher der Grundkörper ein Heizelement umfasst. Die Vorrichtung ist dann auch geeignet, um Heißschmelzkleber, welcher seine Klebewirkung beim Erstarren entfaltet, aufzutragen, wie er industriell häufig Verwendung findet.Particularly preferred is a development of the device according to the invention, in which the base body comprises a heating element. The device is then also suitable to hot melt adhesive, which unfolds its adhesive effect during solidification, apply, as it is commonly used industrially.
Die maximale Betriebstemperatur der erfindungsgemäßen Vorrichtung, unter der ein fluides Medium abgegeben werden kann, ist durch die Hitzebeständigkeit handelsüblicher Spulen begrenzt. Eine Erhöhung der maximalen Betriebstemperatur ist möglich, in dem Mittel zur Kühlung der Spule vorgesehen sind. Besonders bevorzugt ist es jedoch, wenn die Spuie eine Wicklung aus einem mit einer hitzefesten Isolierung versehenen Spulendraht umfasst, da hierdurch auf aufwändige Mittel zur Kühlung der Spule verzichtet werden kann.The maximum operating temperature of the device according to the invention, under which a fluid medium can be discharged, is limited by the heat resistance of commercially available coils. An increase in the maximum operating temperature is possible, are provided in the means for cooling the coil. However, it is particularly preferred if the Spuie comprises a winding of a coil provided with a heat-resistant insulation coil wire, as this can be dispensed with complex means for cooling the coil.
Das Verschlusselement des Abgabemoduls ist vorzugsweise mit einem pneumatisch betätigten Differentialkolben gekoppelt, bei dem die Rückstellkräfte durch einen permanent anliegenden pneumatischen Druck erzeugt werden. Die Betätigungskräfte zum Verlagern des Verschlusselements zur Öffnung der Abgabeöffnung werden dadurch bewirkt, dass bei Betätigung des Schaltventils der pneumatische Druck auf eine Fläche des Differentialkolbens geleitet wird, die größer als die die Rückstellkräfte bewirkende Fläche und derart ausgerichtet ist, dass die Betätigungskräfte den Rückstellkräften entgegenwirken.The closure element of the dispensing module is preferably coupled to a pneumatically operated differential piston in which the restoring forces are generated by a permanently applied pneumatic pressure. The actuating forces for displacing the closure element to open the discharge opening are effected by the fact that upon actuation of the switching valve, the pneumatic pressure is directed to a surface of the differential piston, which is larger than the surface causing the restoring forces and aligned so that the actuating forces counteract the restoring forces.
Zur Erhöhung der Betriebssicherheit der erfindungsgemäßen Vorrichtung ist vorzugsweise zusätzlich eine auf den Differentialkolben wirkende Hilfsfeder vorgesehen, die bei nicht anliegendem pneumatischen Druck das Verschlusselement in die geschlossene Position verlagert. Hierdurch wird vermieden, dass unkontrolliert fluides Medium aus der Abgabeöffnung austritt, wenn der pneumatische Druck zusammenbrechen sollte.To increase the reliability of the device according to the invention, an auxiliary spring acting on the differential piston is preferably additionally provided, which displaces the closure element in the closed position at non-applied pneumatic pressure. This avoids that uncontrolled fluid escapes from the discharge opening when the pneumatic pressure should collapse.
In der Zeichnung ist - schematisch - ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung dargestellt. Es zeigen:
- Fig. 1
- das Ausführungsbeispiel in einer teilgeschnittenen Seitenansicht;
- Fig. 2
- - ausschnittsweise - das Verschlussorgan und den Anker des Schaltventils in einer vergrößerten Detailansicht im geschlossenen Zustand sowie
- Fig. 3
- eine
Fig. 2 entsprechende Darstellung im geöffneten Zustand.
- Fig. 1
- the embodiment in a partially sectioned side view;
- Fig. 2
- - Partial - the closure member and the armature of the switching valve in an enlarged detail view in the closed state and
- Fig. 3
- a
Fig. 2 corresponding representation in the open state.
Die in
In dem Gehäuse 2 ist eine Zylinderkammer 3 ausgebildet, die die Form einer Stufenbohrung hat.In the
In the housing 2, a
In der Zylinderkammer 3 ist ein Differentialkolben 4 mit zwei Kolbenflächen unterschiedlichen Durchmessers derart angeordnet, dass die Kolbenfläche 5 mit dem kleineren Durchmesser mit der Zylinderwandung des Teils 6 der Zylinderkammer 3 mit dem kleineren Durchmesser dicht wirkend abschließt. Die Kolbenfläche 7 schließt mit dem Teil 8 der Zylinderkammer 3 dicht wirkend ab, die den größeren Durchmesser aufweist.In the
Zwischen dem die Kolbenfläche 7 bildenden Kolbenteil und dem aufgrund der Stufenbohrung gebildeten Rand 9 stützt sich eine Druckfeder 4' ab.Between the
Der Differentialkolben 4 ist mit einem sich von der Kolbenfläche 7 aus senkrecht erstreckenden Verschlusselement 10 verbunden, welches eine Führungsbohrung 11, in der es gleitend geführt ist, durchsetzt und sich durch einen Fluidkanal 12 hindurch bis zu einer Abgabeöffnung 13 erstreckt, in die der Fluidkanal 12 mündet.The differential piston 4 is connected to a
Das Verschlusselement 10 kann mittels des Differentialkolbens 4 zwischen einer die Abgabeöffnung öffnenden und einer die Abgabeöffnung verschließenden Position verlagert werden, wie im Folgenden noch beschrieben werden wird.The
In den oberen Teil 6 der Zylinderkammer 3 mündet ein erster Druckluftkanal 14, dessen anderes Ende an einer Seitenwandung 15 des Abgabemoduls 1 in einer Öffnung 16 austritt. In den unteren Teil 8 der Zylinderkammer 3 mündet ein zweiter Druckluftkanal 17, dessen anderes Ende ebenfalls aus der Seitenwandung 15 in einer Öffnung 18 austritt. Auch der Fluidkanal 12 ist derart in dem Gehäuse 2 angeordnet, dass er in einer Öffnung 19 in die Seitenwandung 15 mündet.In the upper part 6 of the
Das Abgabemodul 1 ist mit seiner Seitenwandung 15 an der Stirnwandung 20 eines Grundkörpers 21 durch eine in der Zeichnung nicht erkennbare Verschraubung befestigt. Der Grundkörper umfasst einen Fluidkanal 22, dessen erstes Ende in einen Anschluss 23 für einen Fluidzufuhrschlauch und dessen zweites Ende in einer zur Öffnung 19 in dem Abgabemodul 1 deckungsgleichen Öffnung 19 mündet.The
Ferner umfasst der Grundkörper 21 elektrische Anschlussmittel 26 zum Betrieb einer Heizeinrichtung 24 bekannter Bauart und eines elektrisch betätigbaren Schaltventils 25, welches in dem Grundkörper 21 untergebracht ist.Furthermore, the
Das Schaltventil 25 umfasst eine Spule 27 zum Erzeugen eines elektromagnetischen Feldes und einen mittels des elektromagnetischen Feldes verlagerbaren Anker 28, der mit einem Verschlussorgan 29 des Schaltventils 25 gekoppelt ist.The
Das Schaltventil umfasst des Weiteren einen Pol 30, der in das Innere der Spule von einem Ende hineinragt. Der Anker 28 ist derart angeordnet, dass ein Abschnitt desselben von dem anderen Ende in die Spule 27 hineinragt.The switching valve further includes a
Ferner umfasst das Schaltventil 25 ein Flussführungselement 31, welches die Spule umgibt und welches den Fluss zwischen dem Pol 30 und dem Anker 28 so verteilt, dass der Anker 28 von dem Pol 30 angezogen wird.Further, the switching
Das Flussführungselement 31 weist einen rechteckigen Querschnitt und eine Außenkontur auf, die derart an die Außenkontor des Grundkörpers 21 angepasst ist, dass der Grundkörper 21 und das Flussführungselement 31 flache, unzerklüftete Außenflächen bilden.The
In dem Grundkörper 21 ist ferner ein zentraler Druckluftkanal 32 angeordnet, dessen eines Ende in Anschlussmittel 33 zum Anschluss einer Druckluft-Zuleitung mündet. Der Druckluftkanal 32 verzweigt sich in dem Grundkörper 21 in einen Durchgangskanal 34, der über eine Öffnung 16' mit dem ersten Druckluftkanal 14 verbunden ist, und in einen Kanal 35, welcher wahlweise über das Verschlussorgan 29 mit dem Druckluftkanal 32 verbunden werden kann.In the
In den
Wird der Anker 28 durch Anlegen einer elektrischen Betätigungsspannung an die Spule 27 gemäß der Zeichnung nach oben in den geöffneten Zustand verlagert, wie dies in
Wird die Betätigungsspannung abgeschaltet, so verlagert sich der Anker 28 mit dem Verschlussorgan 29 in die in den
Die Verlagerung des Differentialkolbens 4 kann somit ausschließlich unter Wirkung des anliegenden pneumatischen Drucks durch Betätigung des Schältventils 25 erfolgen. Die Druckfeder 4' ist dennoch vorgesehen, damit im Falle eines Zusammenbruchs des pneumatischen Drucks der Differentialkolben 4 in seine untere Stellung verlagert und die Abgabeöffnung 13 von dem Verschlusselement 10 verschlossen wird, um so ein unkontrolliertes Austreten von dem abzugebenden fluiden Medium zu verhindern.The displacement of the differential piston 4 can thus take place exclusively under the action of the applied pneumatic pressure by actuation of the peeling
- 100100
- Vorrichtungcontraption
- 11
- Abgabemoduldelivery module
- 22
- Gehäusecasing
- 33
- Zylinderkammercylinder chamber
- 44
- Differentialkolbendifferential piston
- 4'4 '
- Druckfedercompression spring
- 55
- Kolbenflächepiston area
- 66
- Teilpart
- 77
- Kolbenflächepiston area
- 88th
- Teilpart
- 99
- Randedge
- 1010
- Verschlusselementclosure element
- 1111
- Führungsbohrungguide bore
- 1212
- Fluidkanalfluid channel
- 1313
- Abgabeöffnungdischarge opening
- 1414
- erster Druckluftkanalfirst compressed air duct
- 1515
- Seitenwandungsidewall
- 16, 16'16, 16 '
- Öffnungopening
- 1717
- zweiter Druckluftkanalsecond compressed air channel
- 1818
- Öffnungopening
- 19, 19'19, 19 '
- Öffnungopening
- 2020
- Stirnwandungend wall
- 2121
- Grundkörperbody
- 2222
- Fluidkanalfluid channel
- 2323
- Anschlussconnection
- 2424
- Heizeinrichtungheater
- 2525
- Schaltventilswitching valve
- 2626
- elektrische Anschlussmittelelectrical connection means
- 2727
- SpuleKitchen sink
- 2828
- Ankeranchor
- 2929
- Verschlussorganclosure member
- 29', 29"29 ', 29 "
- Dichtringeseals
- 3030
- Polpole
- 3131
- FlussführungselementFlux guide
- 3232
- DruckluftkanalCompressed air duct
- 3333
- Anschlussmittelconnection means
- 3434
- DurchgangskanalThrough channel
- 3535
- Kanalchannel
- 3636
- RückstellfederReturn spring
- 3737
- SacklochbohrungBlind hole
- 3838
- Bodenground
- 3939
- EndeThe End
- 4040
- Stirnseitefront
- 4141
- Ringraumannulus
- 4242
- Auslassoutlet
Claims (12)
- Apparatus for the intermittent dispensing of fluid media, such as adhesives, with a dispensing module (1) which comprises a fluid duct (12) issuing into a dispensing orifice (13),
with a closing element (10) which, actuated pneumatically, can be displaced between a position opening the dispensing orifice (13) and a position closing the dispensing orifice (13),
with a basic body (21) to which the dispensing module (1) is fastened and which has a fluid duct (22) for feeding the fluid medium and a compressed-air duct (32) for feeding compressed air to the dispensing module (1),
and with an electrically actuable switching valve (25) which has a closing member (29) and which is inserted into the compressed-air duct (32) and is suitable for controlling the compressed air fed to the dispensing module (1), such that the closing element (10) is displaced as a function of the applied actuating voltage between the position opening the dispensing orifice and the position closing the dispensing orifice,
characterized in that
the switching valve (25) accommodated within the basic body comprises a flow guide element (31) which surrounds a coil and distributes the flow between a pole (30) and an armature (28) of the switching valve (25) such that the armature (28) is pulled up by
the pole (30), the flow guide element having an outer contour which is adapted to the outer contour of the basic body (21) in such a way that the basic body (21) and the flow guide element (31) form flat unbroken outer faces. - Apparatus according to Claim 1,
characterized in that the switching valve (25) comprises a coil (27) for generating an electromagnetic field and an armature (28) which can be displaced by means of the electromagnetic field and is coupled to the closing member (29) of the switching valve (25). - Apparatus according to Claim 2,
characterized in that the coil (27) is arranged around a portion of one pole (30) and around a portion of the armature (28). - Apparatus according to Claim 3,
characterized in that the switching valve (25) comprises a flow guide element (31) which distributes the flow between the pole (30) and the armature (28) such that the closing member (29) of the switching valve (25) is displaced into the open position. - Apparatus according to Claim 4,
characterized in that the flow guide element (31) has a non-circular cross section. - Apparatus according to Claim 5,
characterized in that the flow guide element (31) has a rectangular cross section. - Apparatus according to one of Claims 1 to 6,
characterized in that the switching valve (25) comprises means for generating restoring forces which displace the closing member (29) into the closed position when there is no actuating voltage applied to the coil (27). - Apparatus according to Claim 7,
characterized in that the switching valve (25) comprises a restoring spring (36). - Apparatus according to one of Claims 1 to 8,
characterized in that the basic body (21) comprises a heating device (24). - Apparatus according to one of Claims 1 to 9,
characterized in that the coil (27) comprises a winding consisting of a coil wire provided with heat-resistant insulation. - Apparatus according to one of Claims 1 to 10,
characterized in that the closing member (10) is coupled to a pneumatically actuated differential piston (4). - Apparatus according to Claim 11,
characterized in that an auxiliary spring is provided, which acts on the differential piston (4) in such a way that the closing element (10) is displaced into the closed position when pneumatic pressure is not applied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09012730.9A EP2138238B1 (en) | 2005-01-17 | 2006-01-07 | Apparatus for intermittently dispensing fluids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200520000656 DE202005000656U1 (en) | 2005-01-17 | 2005-01-17 | Device for the intermittent delivery of fluid media |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09012730.9A Division EP2138238B1 (en) | 2005-01-17 | 2006-01-07 | Apparatus for intermittently dispensing fluids |
EP09012730.9 Division-Into | 2009-10-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1681101A1 EP1681101A1 (en) | 2006-07-19 |
EP1681101B1 true EP1681101B1 (en) | 2011-03-02 |
Family
ID=34353886
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06000253A Expired - Fee Related EP1681101B1 (en) | 2005-01-17 | 2006-01-07 | Apparatus for intermittently dispensing fluids |
EP09012730.9A Revoked EP2138238B1 (en) | 2005-01-17 | 2006-01-07 | Apparatus for intermittently dispensing fluids |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09012730.9A Revoked EP2138238B1 (en) | 2005-01-17 | 2006-01-07 | Apparatus for intermittently dispensing fluids |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP1681101B1 (en) |
DE (2) | DE202005000656U1 (en) |
ES (2) | ES2470640T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060097010A1 (en) | 2004-10-28 | 2006-05-11 | Nordson Corporation | Device for dispensing a heated liquid |
ES2764998T3 (en) | 2009-09-21 | 2020-06-05 | Nordson Corp | Pneumatically actuated liquid dispensing valve |
CN112170110B (en) * | 2020-09-27 | 2021-12-10 | 巫山县天煜奇叶农业开发有限公司 | Electronic commerce is with auxiliary device according to ambient temperature automatically regulated point volume of gluing |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407101A (en) | 1994-04-29 | 1995-04-18 | Nordson Corporation | Thermal barrier for hot glue adhesive dispenser |
US6401976B1 (en) * | 2000-03-23 | 2002-06-11 | Nordson Corporation | Electrically operated viscous fluid dispensing apparatus and method |
DE10046326B4 (en) | 2000-09-19 | 2006-05-18 | Nordson Corp., Westlake | Device for applying fluid, in particular hotmelt adhesive, to a substrate which can be moved relative to the device |
DE10052280A1 (en) * | 2000-10-20 | 2002-04-25 | Nordson Corp Westlake | Nozzle arrangement, application device and application method |
JP4663894B2 (en) * | 2001-03-27 | 2011-04-06 | 武蔵エンジニアリング株式会社 | Droplet forming method and droplet quantitative discharge apparatus |
-
2005
- 2005-01-17 DE DE200520000656 patent/DE202005000656U1/en not_active Expired - Lifetime
-
2006
- 2006-01-07 DE DE502006008969T patent/DE502006008969D1/en active Active
- 2006-01-07 EP EP06000253A patent/EP1681101B1/en not_active Expired - Fee Related
- 2006-01-07 EP EP09012730.9A patent/EP2138238B1/en not_active Revoked
- 2006-01-07 ES ES09012730.9T patent/ES2470640T3/en active Active
- 2006-01-07 ES ES06000253T patent/ES2361035T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE502006008969D1 (en) | 2011-04-14 |
ES2361035T3 (en) | 2011-06-13 |
EP2138238A1 (en) | 2009-12-30 |
EP2138238B1 (en) | 2014-04-02 |
DE202005000656U1 (en) | 2005-03-17 |
EP1681101A1 (en) | 2006-07-19 |
ES2470640T3 (en) | 2014-06-24 |
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