EP0463990B1 - Electrically driven dispensing apparatus - Google Patents

Electrically driven dispensing apparatus Download PDF

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Publication number
EP0463990B1
EP0463990B1 EP91810457A EP91810457A EP0463990B1 EP 0463990 B1 EP0463990 B1 EP 0463990B1 EP 91810457 A EP91810457 A EP 91810457A EP 91810457 A EP91810457 A EP 91810457A EP 0463990 B1 EP0463990 B1 EP 0463990B1
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EP
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Prior art keywords
lever
discharge device
acting
driving shaft
order
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EP91810457A
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German (de)
French (fr)
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EP0463990A1 (en
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Wilhelm A. Keller
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0103—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like with electrically actuated piston or the like

Definitions

  • the present invention relates to an electrically operated discharge device according to the preamble of claim 1, which is known from DE-A-34 18 052.
  • the electric drive acting on a rack is switched off when the release lever is released, and the drive rod is switched to freewheel via a release device, so that it can recede under the built-up pressure of the material in the cartridge in order to prevent reflow.
  • the device 1 in the figures is an electrical discharge device for a double discharge cartridge for two-component compositions.
  • the device 1 consists of a housing 2, a handle 3 with release lever 4, the two push rods 5 with the pressure pieces 6, which act on delivery pistons (not shown) in the cylinders of the double cartridge 7.
  • This double cartridge 7 contains two components in a certain ratio, which are mixed during the discharge process in a so-called static mixer, whereupon they react chemically and harden or solidify.
  • the two components are discharged from the cylinders by simultaneously actuating delivery pistons arranged in each cylinder, as a result of which the masses are pressed out through an end opening (not shown) of the static mixer.
  • This double cartridge 7 is not actually the subject of the present invention and has been described in detail, for example, in EP-A-294 672 by the same applicant.
  • the electrical discharge device according to the invention is not limited to the operation of such double cartridges and is also suitable for single cartridges or multiple cartridges.
  • the most accurate possible dosing is desirable, in particular in the case of double or multiple cartridges, with exact observance of the mixing ratio of the masses to be dispensed.
  • the accuracy is counteracted by the fact that, due to the nature of the cartridges, part of the mass to be discharged continues to flow as soon as the drive of the push rod stops. It would be obvious to regulate the afterflow in an electrical or electronic way with an electrically operated motor such that the electric drive is reversed and the push rods are withdrawn.
  • the push rods 5 are moved forward by a carriage 8 which runs in guides 9 which are formed on both sides of the inner wall of the housing, see. Fig. 3. With these guides, the push rods and the spindle are effectively protected against tipping by the different reaction forces with different cartridge diameters.
  • the carriage is moved by a drive spindle 10 which is driven by a gear 11 to be described.
  • the spindle 10 runs in a corresponding threaded sleeve 12 in the slide.
  • the drive spindle is held longitudinally displaceably in the housing, specifically via a transition piece 13 which is embedded in the housing at one end 14 and opens into a pin 15 at the other end.
  • the spindle 10 has a corresponding recess 16 at this end and is rotatable, but not longitudinally attached to this pin on the transition piece.
  • the relatively small longitudinal displacement of the drive spindle with respect to the housing of a few mm and thus the connecting rods connected via the slide is carried out by mechanical means, in the present case by means of a double toggle 17, s. 2 and 4, only one of the two toggle levers being described.
  • the first lever 18 is rotatably fastened about the pivot point 19 to a rib 20 inside the housing, while the second lever 21 is rotatably fastened to the transition piece 13 about the pivot point 22.
  • Both levers 18 and 21 of equal length are connected at their inner ends so as to be rotatable about axis 23 with a third lever 24 which runs perpendicular to the connecting line of the other two pivot points.
  • This third lever 24 is rotatably connected at the other end via axis 25 to the angled part 26 of the release lever 4, which is rotatable about the axis 27.
  • a tension spring 28 also acts on the axis 25, which is shown more schematically in FIG. 4 and can also assume a different shape and position. In the position shown in FIGS. 1 and 2, the toggle lever is in a relaxed position and the return spring 29, which engages at the rear end 30 of the drive spindle, has retracted it and thus also the push rods 5.
  • the mechanical means for relieving the delivery pistons do not necessarily have to consist of the double-guided knee joints, but can also be realized, for example, by means of eccentric levers.
  • the device is driven by an electric motor 32 which, for example, delivers a speed of 10,000 revolutions per minute.
  • the motor is fed by an accumulator 33, which can be charged through the openings 34 via a charger.
  • the two electrical connections 44 and 45 between the battery and the electric motor can also be seen in FIG. 3.
  • the rechargeable battery could also be replaced or replaced by appropriate batteries, which can be replaced by a suitable opening 35 in the housing.
  • a power supply that can be connected directly to the mains can also be installed.
  • a reduction gear 36 with a reduction ratio of, for example, 70: 1 is flanged to the motor.
  • This reduction gear 36 is connected to a first gear 37 which can mesh with a feedback gear 44 if it is switched in this way.
  • the first gear 37 is connected via a second reduction gear with a reduction ratio of 10: 1, for example, and this with a second gear 40, which mesh with a feed gear 41 can, if the friction clutch 42 has switched on this transmission, which results in a total reduction ratio of 700: 1 and a ratio of return to feed of 10: 1, that is to say that the return of the push rods takes place ten times faster than their feed.
  • Both the first and the second gearwheel can each be provided with a slip clutch 43 in order to limit the torque or the delivery pressure.
  • the electric motor is stopped after the release lever is released and the polarity is reversed for a short time, for example for a third of a turn, as a result of which the spindle is moved backwards.
  • means are connected to the toggle lever in order to bring the double-acting friction clutch 42 immediately into the push-back position, so that the first gear 37 can mesh with the push-back gear 44.
  • the individual gears and reduction gears as well as the friction or slip clutches are known components and can be adapted as desired to the speed of the motor, which can of course also be designed for other speeds, and of course also to the desired accuracy and feed rate.
  • the two-sided friction clutch 42 which can be brought into the feed or push-back position via a symbolically represented changeover button 46, other clutches are also conceivable, for example claw clutches or the like known clutches.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Description

Die vorliegende Erfindung bezieht sich auf ein elektrisch betriebenes Austraggerät gemäss Oberbegriff von Patentanspruch 1, das aus der DE-A-34 18 052 bekannt ist. Bei diesem bekannten Gerät wird der auf eine Zahnstange wirkende elektrische Antrieb beim Loslassen des Auslösehebels abgestellt und die Antriebstange über eine Freigabeeinrichtung auf Freilauf geschaltet, so dass diese unter dem aufgebauten Druck des Materials in der Kartusche zurückweichen kann, um ein Nachfliessen zu verhindern.The present invention relates to an electrically operated discharge device according to the preamble of claim 1, which is known from DE-A-34 18 052. In this known device, the electric drive acting on a rack is switched off when the release lever is released, and the drive rod is switched to freewheel via a release device, so that it can recede under the built-up pressure of the material in the cartridge in order to prevent reflow.

Diese passive Entlastung genügt nicht in allen Fällen, insbesondere nicht bei exakt arbeitenden Doppelkartuschen und es ist daher von diesem Stand der Technik ausgehend Aufgabe der vorliegenden Erfindung, das Nachfliessen des Materials noch wirksamer zu verhindern.This passive relief is not sufficient in all cases, in particular not in the case of double cartridges which work precisely, and it is therefore the object of the present invention, based on this prior art, to prevent the material from flowing in even more effectively.

Diese Aufgabe wird mit einem in den Ansprüchen beschriebenen Gerät gelöst. Weitere Vorteile und Verbesserungen des Austraggerätes sind in der Beschreibung und in den Ansprüchen dargestellt.This object is achieved with a device described in the claims. Further advantages and improvements of the discharge device are presented in the description and in the claims.

Die Erfindung wird im einzelnen anhand einer Zeichnung eines Ausführungsbeispiels näher erläutert.

  • Fig. 1 zeigt im Schnitt ein erfindungsgemässes Austraggerät,
  • Fig. 2 zeigt einen Ausschnitt aus Fig. 1,
  • Fig. 3 zeigt einen Schnitt gemäss der Linie III-III in Fig. 1 und
  • Fig. 4 zeigt einen Schnitt gemäss der Linie VI-VI in Fig. 1.
The invention is explained in more detail with reference to a drawing of an embodiment.
  • 1 shows in section a discharge device according to the invention,
  • FIG. 2 shows a detail from FIG. 1,
  • Fig. 3 shows a section along the line III-III in Fig. 1 and
  • FIG. 4 shows a section along the line VI-VI in FIG. 1.

Das Gerät 1 in den Figuren ist ein elektrisches Austraggerät für eine Doppelaustragkartusche für Zweikomponentenmassen. Das Gerät 1 besteht aus einem Gehäuse 2, einem Handgriff 3 mit Auslösehebel 4, den zwei Schubstangen 5 mit den Druckstücken 6, die auf nicht eingezeichnete Förderkolben in den Zylindern der Doppelkartusche 7 wirken. Diese Doppelkartusche 7 enthält zwei Komponenten in bestimmtem Verhältnis, die während des Austragvorgangs in einem sogenannten statischen Mischer gemischt werden, worauf sie chemisch reagieren und aushärten bzw. sich verfestigen. Dabei erfolgt das Austragen der beiden Komponenten aus den Zylindern durch gleichzeitiges Betätigen von in jedem Zylinder angeordneten Förderkolben, wodurch die Massen durch eine stirnseitige, nicht gezeichnete Austrittsöffnung des Statikmischers ausgepresst werden. Diese Doppelkartusche 7 ist nicht eigentlicher Gegenstand der vorliegenden Erfindung und ist beispielsweise in der EP-A-294 672 des gleichen Anmelders eingehend beschrieben worden. Das erfindungsgemässe elektrische Austraggerät ist jedoch nicht auf die Betätigung solcher Doppelkartuschen beschränkt und eignet sich auch für Einfachkartuschen oder Mehrfachkartuschen.The device 1 in the figures is an electrical discharge device for a double discharge cartridge for two-component compositions. The device 1 consists of a housing 2, a handle 3 with release lever 4, the two push rods 5 with the pressure pieces 6, which act on delivery pistons (not shown) in the cylinders of the double cartridge 7. This double cartridge 7 contains two components in a certain ratio, which are mixed during the discharge process in a so-called static mixer, whereupon they react chemically and harden or solidify. In this case, the two components are discharged from the cylinders by simultaneously actuating delivery pistons arranged in each cylinder, as a result of which the masses are pressed out through an end opening (not shown) of the static mixer. This double cartridge 7 is not actually the subject of the present invention and has been described in detail, for example, in EP-A-294 672 by the same applicant. However, the electrical discharge device according to the invention is not limited to the operation of such double cartridges and is also suitable for single cartridges or multiple cartridges.

Bei solchen Austraggeräten ist eine möglichst genaue Dosierung wünschenswert, insbesondere bei Doppel- oder Mehrfachkartuschen, unter genauer Einhaltung des Mischverhältnisses der auszutragenden Massen. Abgesehen von den Anforderungen an das Vorschubsystem, die sich bei einem elektrischen Antrieb wie nachfolgend beschrieben realisieren lassen, wirkt der Genauigkeit entgegen, dass infolge der Beschaffenheit der Kartuschen ein Teil der auszutragenden Masse nachfliesst, sobald der Vortrieb der Schubstange aufhört. Es wäre naheliegend, bei einem elektrisch betriebenen Motor das Nachfliessen auf elektrischem, respektive elektronischem Wege zu regeln derart, dass der elektrische Antrieb umgepolt wird und damit die Schubstangen zurückgenommen werden. In der Praxis, d.h. mit dem Ziel ein möglichst einfaches und preiswertes Gerät zu konstruieren, ist dies jedoch mit einfachen Mitteln nicht durchführbar, da eine zu grosse Zeit vergeht, bis bei einfachen elektrischen Antrieben der Motor umgepolt und die Schubstangen zurückbewegt werden können. Nachfolgend werden einfache mechanische Mittel beschrieben, um die Schubstangen zurückzubewegen und damit den Förderkolben in der Kartusche zu entlasten.With such dispensing devices, the most accurate possible dosing is desirable, in particular in the case of double or multiple cartridges, with exact observance of the mixing ratio of the masses to be dispensed. Apart from the requirements for the feed system, which can be realized with an electric drive as described below, the accuracy is counteracted by the fact that, due to the nature of the cartridges, part of the mass to be discharged continues to flow as soon as the drive of the push rod stops. It would be obvious to regulate the afterflow in an electrical or electronic way with an electrically operated motor such that the electric drive is reversed and the push rods are withdrawn. In practice, ie with the aim of constructing a device that is as simple and inexpensive as possible, this cannot be carried out with simple means, since it takes too long before the motor can be reversed with simple electric drives and the push rods can be moved back. Simple mechanical means are described below to move the push rods back and thus relieve the delivery piston in the cartridge.

Die Schubstangen 5 werden von einem Schlitten 8 vorwärtsbewegt, der in Führungen 9 läuft, die beidseitig an der Innenwand des Gehäuses angeformt sind, s. Fig. 3. Durch diese Führungen werden die Schubstangen und die Spindel wirksam gegen ein Kippen durch die unterschiedlichen Reaktionskräfte bei unterschiedlichem Kartuschendurchmesser geschützt. Der Schlitten wird durch eine Antriebsspindel 10 bewegt, die über ein noch zu beschreibendes Getriebe 11 angetrieben ist. Die Spindel 10 läuft in einer entsprechenden Gewindehülse 12 im Schlitten. Anstatt die Spindel kartuschenseitig in einem festen Lager im Gehäuse drehbar zu lagern, wird erfindungsgemäss die Antriebsspindel im Gehäuse längsverschieblich gehalten, und zwar über ein Uebergangsstück 13, das an einem Ende 14 im Gehäuse eingelassen ist und am anderen Ende in einen Zapfen 15 mündet. Die Spindel 10 besitzt an diesem Ende eine entsprechende Ausnehmung 16 und ist drehbar, jedoch nicht längsverschieblich um diesen Zapfen am Uebergangsstück befestigt.The push rods 5 are moved forward by a carriage 8 which runs in guides 9 which are formed on both sides of the inner wall of the housing, see. Fig. 3. With these guides, the push rods and the spindle are effectively protected against tipping by the different reaction forces with different cartridge diameters. The carriage is moved by a drive spindle 10 which is driven by a gear 11 to be described. The spindle 10 runs in a corresponding threaded sleeve 12 in the slide. Instead of rotating the spindle on the cartridge side in a fixed bearing in the housing, according to the invention the drive spindle is held longitudinally displaceably in the housing, specifically via a transition piece 13 which is embedded in the housing at one end 14 and opens into a pin 15 at the other end. The spindle 10 has a corresponding recess 16 at this end and is rotatable, but not longitudinally attached to this pin on the transition piece.

Die relativ kleine Längsverschiebung der Antriebsspindel gegenüber dem Gehäuse von einigen mm und somit der über den Schlitten verbundenen Schubstangen erfolgt mit mechanischen Mitteln, in vorliegendem Fall über einen doppelten Kniehebel 17, s. Fig. 2 und 4, wobei nur einer der beiden Kniehebel beschrieben wird. Der erste Hebel 18 ist drehbar um den Drehpunkt 19 an einer Rippe 20 im Gehäuseinneren befestigt, während der zweite Hebel 21 um den Drehpunkt 22 drehbar am Uebergangsstück 13 befestigt ist. Beide gleichlangen Hebel 18 und 21 sind an ihren inneren Enden um Achse 23 drehbar mit einem dritten Hebel 24 verbunden, der senkrecht zur Verbindungslinie der anderen zwei Drehpunkte verläuft. Dieser dritte Hebel 24 ist am anderen Ende drehbar über Achse 25 mit dem abgewinkelten Teil 26 des Auslösehebels 4 verbunden, der um die Achse 27 drehbar ist. An der Achse 25 greift ferner eine Zugfeder 28 an, die in Fig. 4 eher schematisch dargestellt ist und auch eine andere Form und Lage einnehmen kann. In der in den Fig. 1 und 2 gezeichneten Stellung befindet sich der Kniehebel in entspannter Stellung und die Rückholfeder 29, die am hinteren Ende 30 der Antriebsspindel angreift, hat diese und damit auch die Schubstangen 5 zurückgezogen. Beim Spannen des Kniehebels durch den Auslösehebel 4 wird, da der erste Hebel 18 am Gehäuse befestigt ist, das Uebergangsstück 13 durch den zweiten Hebel entgegen dem Druck der Rückholfeder 29 nach links, d.h. Richtung Kartuschen, bewegt, und es wird eine starre Verbindung zwischen der Antriebsspindel und dem Uebergangsstück bzw. dem Gehäuse hergestellt. Gleichzeitig wird mit dem Betätigen des Auslösehebels der Betätigungsschalter 31 des elektrischen Antriebes betätigt. Beim Loslassen des Auslösehebels wird der elektrische Antrieb entweder nur gestoppt oder umgepolt, und innert sehr kurzer Zeit wird der Kniehebel aus seiner starren Stellung, unter Mitwirkung der Zugfeder 28, in die in Fig. 2 gezeichnete Stellung gebracht. Dadurch wird, unter Wirkung der Rückholfeder 29, das Uebergangsstück zurückgezogen und somit die Antriebsspindel und die damit verbundenen Schubstangen innert kurzer Zeit zurückgezogen. Durch dieses sehr kurzfristige Zurückschnellen der Schubstangen mit den Druckstücken werden die Förderkolben entlastet und ein Nachfliessen der auszutragenden Masse wird sofort unterbunden. Dabei ist es zweckmässig, für den Auslösehebel eine Endlagedämpfung vorzusehen, beispielsweise auf hydraulischem Wege, um einen unangenehmen Rückprall zu verhindern. Falls hydraulische Mittel verwendet werden, können diese auch zur Unterstützung der Tätigkeit des Auslösehebels 4 herangezogen werden.The relatively small longitudinal displacement of the drive spindle with respect to the housing of a few mm and thus the connecting rods connected via the slide is carried out by mechanical means, in the present case by means of a double toggle 17, s. 2 and 4, only one of the two toggle levers being described. The first lever 18 is rotatably fastened about the pivot point 19 to a rib 20 inside the housing, while the second lever 21 is rotatably fastened to the transition piece 13 about the pivot point 22. Both levers 18 and 21 of equal length are connected at their inner ends so as to be rotatable about axis 23 with a third lever 24 which runs perpendicular to the connecting line of the other two pivot points. This third lever 24 is rotatably connected at the other end via axis 25 to the angled part 26 of the release lever 4, which is rotatable about the axis 27. A tension spring 28 also acts on the axis 25, which is shown more schematically in FIG. 4 and can also assume a different shape and position. In the position shown in FIGS. 1 and 2, the toggle lever is in a relaxed position and the return spring 29, which engages at the rear end 30 of the drive spindle, has retracted it and thus also the push rods 5. When the toggle lever is tensioned by the release lever 4, since the first lever 18 is attached to the housing, the transition piece 13 is moved by the second lever counter to the pressure of the return spring 29 to the left, ie towards the cartridges, and there is a rigid connection between the Drive spindle and the transition piece or the housing manufactured. At the same time, the actuation switch 31 of the electric drive is actuated by actuating the release lever. When the release lever is released, the electric drive is either only stopped or reversed, and within a very short time the toggle lever is brought out of its rigid position, with the cooperation of the tension spring 28, into the position shown in FIG. 2. As a result, under the action of the return spring 29, the transition piece is withdrawn and thus the drive spindle and the connecting rods connected thereto are withdrawn within a short time. Through this very The feed pistons are relieved of pressure and the push rods snap back at short notice and the mass to be discharged is immediately prevented from flowing back. It is expedient to provide end position damping for the release lever, for example hydraulically, in order to prevent an unpleasant rebound. If hydraulic means are used, they can also be used to support the activity of the trigger lever 4.

Die mechanischen Mittel zum Entlasten der Förderkolben müssen nicht notwendigerweise aus den doppelt geführten Kniegelenken bestehen, sondern können beispielsweise auch durch Exzenterhebel realisiert werden.The mechanical means for relieving the delivery pistons do not necessarily have to consist of the double-guided knee joints, but can also be realized, for example, by means of eccentric levers.

Der Antrieb des Gerätes erfolgt über einen elektrischen Motor 32, der beispielsweise eine Drehzahl von 10'000 Umdrehungen pro Minute liefert. Im vorliegenden Beispiel wird der Motor von einem Akkumulator 33 gespeist, der über ein Ladegerät durch die Oeffnungen 34 aufgeladen werden kann. Man erkennt ferner in Fig. 3 die zwei elektrischen Anschlüsse 44 und 45 zwischen dem Akku und dem elektrischen Motor. Selbstverständlich könnte der Akku auch ausgewechselt oder durch entsprechende Batterien ersetzt werden, die durch eine geeignete Oeffnung 35 im Gehäuse ausgetauscht werden können. Wahlweise kann auch ein direkt an das Netz anschliessbares Speisegerät eingebaut werden.The device is driven by an electric motor 32 which, for example, delivers a speed of 10,000 revolutions per minute. In the present example, the motor is fed by an accumulator 33, which can be charged through the openings 34 via a charger. The two electrical connections 44 and 45 between the battery and the electric motor can also be seen in FIG. 3. Of course, the rechargeable battery could also be replaced or replaced by appropriate batteries, which can be replaced by a suitable opening 35 in the housing. Optionally, a power supply that can be connected directly to the mains can also be installed.

Am Motor angeflanscht ist ein Reduktionsgetriebe 36 mit einem Untersetzungsverhältnis von beispielsweise 70:1. Dieses Reduktionsgetriebe 36 ist mit einem ersten Zahnrad 37 verbunden, das mit einem Rückschubzahnrad 44 kämmen kann, falls es auf diese Weise geschaltet ist. Das erste Zahnrad 37 ist über ein zweites Reduktionsgetriebe mit einem Untersetzungsverhältnis von beispielsweise 10:1 verbunden und dieses mit einem zweiten Zahnrad 40, das mit einem Vorschubzahnrad 41 kämmen kann, falls die Reibkupplung 42 diese Getriebe eingeschaltet hat, womit ein Gesamtuntersetzungsverhältnis von 700:1 entsteht und ein Verhältnis vom Rückschub zum Vorschub von 10:1, d.h. dass der Rückschub der Schubstangen zehnmal schneller erfolgt als deren Vorschub. Sowohl das erste wie das zweite Zahnrad können je mit einer Rutschkupplung 43 versehen sein, um das Drehmoment, bzw. den Förderdruck zu begrenzen.A reduction gear 36 with a reduction ratio of, for example, 70: 1 is flanged to the motor. This reduction gear 36 is connected to a first gear 37 which can mesh with a feedback gear 44 if it is switched in this way. The first gear 37 is connected via a second reduction gear with a reduction ratio of 10: 1, for example, and this with a second gear 40, which mesh with a feed gear 41 can, if the friction clutch 42 has switched on this transmission, which results in a total reduction ratio of 700: 1 and a ratio of return to feed of 10: 1, that is to say that the return of the push rods takes place ten times faster than their feed. Both the first and the second gearwheel can each be provided with a slip clutch 43 in order to limit the torque or the delivery pressure.

Wenn der elektrische Antrieb nur gestoppt wird, falls der Auslösehebel losgelassen wird, bleibt nach der momentanen Entlastung der volle Druck auf die Spindel bestehen und um den Betätigungsschalter 31 zu drücken, muss der Auslösehebel gegen diesen Druck angezogen werden. Daher wird im bevorzugten Ausführungsbeispiel der elektrische Motor nach dem Loslassen des Auslösehebels gestoppt und für eine kurze Zeit, beispielsweise für eine Drittelsumdrehung, umgepolt, wodurch die Spindel rückwärts bewegt wird. Um ein schnelles Rückwärtsbewegen zu bewirken sind mit dem Kniehebel Mittel verbunden, um die doppelt wirkende Reibkupplung 42 sofort in die Rückschubstellung zu bringen, so dass das erste Zahnrad 37 mit dem Rückschubzahnrad 44 kämmen kann.If the electric drive is only stopped if the release lever is released, full pressure remains on the spindle after the momentary relief and in order to press the actuation switch 31, the release lever must be tightened against this pressure. Therefore, in the preferred embodiment, the electric motor is stopped after the release lever is released and the polarity is reversed for a short time, for example for a third of a turn, as a result of which the spindle is moved backwards. In order to effect a rapid backward movement, means are connected to the toggle lever in order to bring the double-acting friction clutch 42 immediately into the push-back position, so that the first gear 37 can mesh with the push-back gear 44.

Die einzelnen Getriebe und Reduktionsgetriebe sowie die Reib- oder Rutschkupplungen sind an sich bekannte Bauteile und können beliebig der Drehzahl des Motors, der selbstverständlich auch für andere Umdrehungszahlen ausgelegt sein kann, angepasst werden und selbstverständlich auch der gewünschten Genauigkeit und Vorschubgeschwindigkeit. Statt der zweiseitigen Reibkupplung 42, die über einen symbolisch dargestellten Umschalterknopf 46 in die Vorschub- bzw. Rückschubstellung gebracht werden kann, sind auch andere Kupplungen denkbar, beispielsweise Klauenkupplungen oder dergleichen an sich bekannte Kupplungen.The individual gears and reduction gears as well as the friction or slip clutches are known components and can be adapted as desired to the speed of the motor, which can of course also be designed for other speeds, and of course also to the desired accuracy and feed rate. Instead of the two-sided friction clutch 42, which can be brought into the feed or push-back position via a symbolically represented changeover button 46, other clutches are also conceivable, for example claw clutches or the like known clutches.

Claims (9)

  1. Electrically driven discharge device comprising an electric drive (32) acting through driving means (10) on at least one thrust rod (5) for a cartridge (7) and also comprising a trigger lever (4) acting on a control switch (31) in order to interrupt the electric drive on releasing the lever and to enable the return movement of the driving means, characterized in that the driving means comprise a longitudinally displaceable driving shaft (10), lever (17) comprising mechanical means acting on the driving shaft (10) for pushing same back in order to avoid a continued flowing of the composition to be discharged.
  2. Discharge device according to claim 1, characterized in that the driving shaft (10) is rotatably fixed to a transition piece (13) which is fixed for longitudinal displacement at the housing, and that the mechanical means comprise toggle levers (17), one lever (16) of which being articulated to the interior of the housing, the second lever (21) being articulated to the transition piece (13), and the third lever (24) being articulated to the two other ends of the first and second lever, its other end being articulated to the elbow bent portion (26) of the trigger lever (4), a traction spring (28) acting on the connecting axle (25) between the third lever (24) and the elbow bent portion (26), and a restoring spring (29) acting on the other end of the driving shaft (10).
  3. Discharge device according to claim 1 or 2, characterized in that the electric drive comprises an electric motor (32) which acts through two reducing gears (37, 44) on the driving shaft (10), a double-acting friction clutch (42) operated by a commutator (46) being arranged between the toothed wheels fixed on the driving shaft in order to provide a higher speed for the return than for the advance movements.
  4. Discharge device according to claim 3, characterized in that the electric motor (32)is connected to change poles for a short time after the release of the trigger lever or the control switch (31), and that means are connected to the toggle mechanism for acting on the friction clutch (42) on the reversal of the toggle mechanism in order to turn on the return motion with greater speed.
  5. Discharge device according to any one of claims 1 to 4, characterized in that the two driving gears (37, 41) are provided with a sliding clutch (43) each in order to limit the torque and thus the feed pressure.
  6. Discharge device according to any one of claims 1 to 5, characterized in that the thrust ram(s) (5) is (are) actuated by a sledge(8) running in guides (9) which are formed to both sides of the inner wall of the housing.
  7. Discharge device according to any one of claims 1 to 6, characterized in that the electric motor (32) is powered by a rechargeable accumulator (33) which is also lodged in the housing.
  8. Discharge device according to any one of claims 1 to 7, characterized in that the device is designed for at least one double cartridge (7) for two-component compositions and comprises at least two thrust rods (5), the mechanical means comprising two toggle levers (17) disposed at both sides of the driving shaft (10).
  9. Discharge device according to any one of claims 1 to 8, characterized in that the trigger lever (4) is connected to hydraulic means in order to dampen its rebounding and/or to support its advance motion.
EP91810457A 1990-06-22 1991-06-17 Electrically driven dispensing apparatus Expired - Lifetime EP0463990B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH209090 1990-06-22
CH2090/90 1990-06-22

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EP0463990A1 EP0463990A1 (en) 1992-01-02
EP0463990B1 true EP0463990B1 (en) 1994-07-20

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US (1) US5203476A (en)
EP (1) EP0463990B1 (en)
JP (1) JPH04227045A (en)
DE (1) DE59102231D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013411A1 (en) * 2006-03-15 2007-09-20 Helmut Knoblich Mobile and static mixing nozzle for mixing and distributing high viscous reactive components for subsequent press-fitting into the nozzle in the installation of vehicle disk, comprises two material chambers and conveyor

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69221288D1 (en) * 1992-03-30 1997-09-04 Immuno France S A R L Device for applying a pharmaceutical or cosmetic composition
DE59301003D1 (en) * 1992-09-02 1996-01-04 Wilhelm A Keller Electrically operated discharge device.
EP0586342B1 (en) * 1992-09-02 1996-12-27 Wilhelm A. Keller Method for driving several rods, particularly for manual dispensing devices
US5400925A (en) * 1993-12-09 1995-03-28 Coltene/Whaledent, Inc. Dispensing device adapted for dispensing more than one material from a cartridge
US5546996A (en) * 1994-08-09 1996-08-20 Minnesota Mining And Manufacturing Company Dispensing cartridge refillng system
DE19612524A1 (en) * 1996-03-29 1997-10-02 Metanoia Ag Spray gun for e.g. insulation, weather and fire protection
DE29617872U1 (en) * 1996-10-16 1996-12-12 Dreve Otoplastik GmbH, 59423 Unna Device for pressing out cartridges containing plastic masses
DE19712877A1 (en) * 1996-10-16 1998-04-23 Dreve Otoplastik Gmbh Equipment to press plastics out of cartridge
US6079868A (en) * 1997-12-18 2000-06-27 Advanced Bio Surfaces, Inc. Static mixer
EP0956908A1 (en) 1998-05-15 1999-11-17 Wilhelm A. Keller Electrically driven dispensing apparatus for cartridges
US6135327A (en) * 1998-10-01 2000-10-24 Mcneil (Ohio) Corporation Battery operated grease gun
US6089407A (en) * 1998-12-31 2000-07-18 Dispensing Technologies International Inc. Electrically powered fluid-dispersing apparatus and a method particularly adapted for hand gun operation
IT1307036B1 (en) 1999-04-13 2001-10-23 B X T Trading Marketing E Cons MOTORIZED TOOL FOR THE EXTRUSION OF SEMI-DENSE MATERIALS, SEALING AND SIMILAR SUBSTANCES.
EP1101538A3 (en) 1999-11-16 2004-12-15 Mixpac Systems AG Electrically driven dispensing apparatus for cartridges
US6540113B2 (en) * 2001-02-01 2003-04-01 Dispensing Technologies International Corporation Fluid dispenser particularly adapted for hand-held operation
US6619508B2 (en) * 2001-10-25 2003-09-16 International Business Machines Corporation Apparatus for dispensing a multiple-component substance from a multiple-barrel cartridge
US20060210409A1 (en) * 2005-03-15 2006-09-21 Sumner William P Grease pump
US20090101673A1 (en) * 2007-10-17 2009-04-23 Alioto George S Motorized extrusion tool
US20130020350A1 (en) * 2010-09-01 2013-01-24 Stainless Steel Coatings, Inc. Method of dispensing pesticidal bait and electrically powered dispensing device
EP2606984A1 (en) * 2011-12-21 2013-06-26 Sika Technology AG Driving device for dosing and mixing apparatus
EP2606986A1 (en) * 2011-12-21 2013-06-26 Sika Technology AG Driving equipment for dosing and mixing apparatus
WO2016026518A1 (en) * 2014-08-19 2016-02-25 Medmix Systems Ag Rotary dispenser for multiple cartridge
EP3383554A4 (en) * 2015-12-02 2019-09-18 Fishman Corporation Multi-component gun
EP3210676B1 (en) * 2016-02-24 2019-10-09 Siang Syuan Fu Enterprise Co., Ltd. Caulking gun
TWI649131B (en) * 2018-04-11 2019-02-01 何炳梓 Glue gun drive
EP3932567A1 (en) * 2020-06-30 2022-01-05 Sulzer Mixpac AG Dispenser and method of operating a dispenser

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH562942A5 (en) * 1972-06-08 1975-06-13 Blieberger Rudolf
US3985273A (en) * 1974-02-28 1976-10-12 Davis George B Jun Caulking gun adapter for an electric hand drill
US4024994A (en) * 1975-02-28 1977-05-24 Davis George B Jun Power operated caulking gun
US4157771A (en) * 1977-10-07 1979-06-12 The Gorman-Rupp Company Bag compressing device for dispensing fluid
US4273269A (en) * 1978-02-08 1981-06-16 Davis George B Jun Hand held electric caulking gun
DE3048520A1 (en) * 1980-12-22 1982-07-22 Hilti AG, 9494 Schaan MACHINE FOR DISPENSING DIMENSIONS
JPS59222251A (en) * 1983-05-31 1984-12-13 Matsushita Electric Works Ltd Motor type extruder for viscous material
DE3400726A1 (en) * 1984-01-11 1985-07-18 Horst 3000 Hannover Pudwill DEVICE FOR COMPRESSING SEALING MEASUREMENT OR THE SAME, IN PARTICULAR JOINT SEALING MEASUREMENT
FI852704L (en) * 1985-07-08 1987-01-09 Labsystems Oy ELDRIVEN PIPETT.
DE3535229A1 (en) * 1985-10-02 1987-04-02 Graco Inc Device for injecting materials, in particular sealing materials
EP0252401B1 (en) * 1986-07-07 1990-10-10 Wilhelm A. Keller Dispensing device for cartridges
EP0276665B1 (en) * 1987-01-26 1991-03-06 Wilhelm A. Keller Pressure-activated dispenser for operaing twin cartridges
DE3811954C2 (en) * 1988-04-11 1997-06-05 Friedhelm Schneider Dosing device for pressing plastic masses out of tubular bags
US5104005A (en) * 1988-11-10 1992-04-14 Albion Engineering Company Dual component mechanically operated caulking gun

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013411A1 (en) * 2006-03-15 2007-09-20 Helmut Knoblich Mobile and static mixing nozzle for mixing and distributing high viscous reactive components for subsequent press-fitting into the nozzle in the installation of vehicle disk, comprises two material chambers and conveyor
DE102006013411B4 (en) * 2006-03-15 2008-07-10 Helmut Knoblich Mobile device for mixing and discharging highly viscous masses

Also Published As

Publication number Publication date
DE59102231D1 (en) 1994-08-25
EP0463990A1 (en) 1992-01-02
US5203476A (en) 1993-04-20
JPH04227045A (en) 1992-08-17

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