WO1987004645A1 - Metering and mixing gun for multi-component plastics - Google Patents

Metering and mixing gun for multi-component plastics Download PDF

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Publication number
WO1987004645A1
WO1987004645A1 PCT/EP1987/000039 EP8700039W WO8704645A1 WO 1987004645 A1 WO1987004645 A1 WO 1987004645A1 EP 8700039 W EP8700039 W EP 8700039W WO 8704645 A1 WO8704645 A1 WO 8704645A1
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WO
WIPO (PCT)
Prior art keywords
drive
drive lever
dosing
rod
lever
Prior art date
Application number
PCT/EP1987/000039
Other languages
German (de)
French (fr)
Inventor
Ernst Hatz
Ferdinand Geyer
Original Assignee
Detec Kunststofftechnik Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Detec Kunststofftechnik Gmbh filed Critical Detec Kunststofftechnik Gmbh
Publication of WO1987004645A1 publication Critical patent/WO1987004645A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • B05C17/0116—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 characterised by the piston driving means
    • B05C17/012—Stepwise advancing mechanism, e.g. pawl and ratchets
    • B05C17/0123—Lever actuated
    • B05C17/0126—Lever actuated comprising an element, e.g. an arc compensating element, articulated at one end on the lever and at the other end on the piston rod driving means, e.g. a pawl
    • 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

Definitions

  • the invention relates to a metering and mixing gun for multi-component plastics, the material components of which can be pressed out of several cartridges arranged in a gun housing by means of push pistons, the push rods of which can be driven by a common drive device.
  • the two push rods for the push pistons of the two adjacent cartridges are connected at their rear end via a yoke with a common central drive rod arranged parallel to the push rods is driven by the drive device of the dosing and mixing gun.
  • the entire drive force is introduced via the central drive rod and distributed over the yoke to the two push rods.
  • di to be mixed material components very different viscosities, so that the forces required for pressing are very different.
  • Such different squeezing forces can also occur if cartridges with different piston diameters are used because the material components are mixed in a mixing ratio different from 1.
  • These different push rod forces mean that the push rods and the central drive rod are loaded on one side and are therefore bent to one side. This can lead to a clamping effect and thus to increased friction or even blocking of the drive device. If the push rods and the central drive rod are made as thin as possible to reduce weight, the unevenly acting forces lead to permanent deformations.
  • the object of the invention is therefore to design a metering and mixing gun of the type mentioned in such a way that no lateral force components are exerted on the push rods even with very different and high piston pressing forces; Lateral deformation of the push rods should be excluded with certainty.
  • the power is not transmitted to the push rods here at the rear end of the push rods, but at the push rod section, which is located within the gun housing.
  • the common drive lever is mounted directly in the gun housing. Uneven piston pressing forces, which load the drive lever on one side, are thereby supported directly on the gun housing and do not lead to lateral force components that act on the push rods. A deformation or clamping of the push rods or the drive device is excluded.
  • the drive of a piston push rod by a locking component which moves the push rod only in one direction and can be moved in the longitudinal direction of the rod is known in the case of metering pistols for only a single cartridge. Also in the case of the known metering and mixing pistol (DE-GM 85 15 391), such a locking component which is movable in the longitudinal direction of the rod is used for the drive, but not for the push rods, but for the central drive rod.
  • the lever arm of the drive lever between the pivot bearing and the connection point to each latching structure is significantly smaller than the lever arm between the suspension and the point of attack of the drive rod on the drive lever.
  • the drive lever causes a movement movement and thus a force transmission between the drive rod which initiates the drive force and the thrust piston of the cartridges.
  • Such a power transmission is particularly desirable if it is for pressing out several cartridges required piston press forces are very high and the drive is carried out by means of a hand lever.
  • such a power transmission is also advantageous when driven by a pneumatic cylinder, because the pneumatic cylinder driving the drive rod can then be designed with a smaller piston cross-section and thus less weight.
  • 1 is a dosing and mixing gun in a side view and partially in section
  • FIG. 2 shows a section along the line II-II in FIG. 1, the partial section shown in FIG. 1 being designated by the line I-I in FIG. 2,
  • FIG. 3 shows a partial section similar to FIG - Guide form with three push rods for three cartridges
  • FIG. 4 in a section similar to FIG. 3, an execution form with a single push rod and Fig. 5 in a partial view corresponding to FIG. 1, an Au guide form with a latch as a locking component for the push rod.
  • the metering and mixing pistol shown in FIG. 1 is intended to squeeze out two material components that are mixed and dispensed in a mixing nozzle from two cartridges 1 lying parallel next to one another, of which only one cartridge is indicated in FIG. 1.
  • These are, for example, two-component plastics, the two material components of which harden after mixing and metering.
  • An actuating handle 4 is pivotally mounted in a pistol housing 3 receiving the two cartridges 1 and is located in front of a handle 5 connected to the pistol housing 3.
  • the upper arm of the operating handle 4 which is designed as a two-armed lever, is connected via a rearwardly guided, articulated drive rod 6 to a drive lever 7, which is widened in its upper part to form a yoke (FIG. 2), which is located at the upper end of the drive lever 7 is pivotally mounted in side mountings 8 in the gun housing 3.
  • the two push pistons 9 of the two cartridges 1 are each connected to a push rod 10 which extends rearward in the pistol housing 3.
  • a clamping plate 11 is arranged as a locking component, which engages around the shoe rod 10 and is supported forwardly via a compression spring 12 on the gun housing 3.
  • a pressure roller 13 which is rotatably mounted on the drive lever 7, acts on the clamping plate 11, which forms a pressure piece that transmits the driving force from the drive lever 7 to the clamping plate 11.
  • the clamping plates 11 are tilted on the push rods 10 and thereby clamped, so that they take the push rods 10 with them when they move forward, so that a piston pressing force a is exerted on the cartridges 1 by the push piston 9, when the operating handle 4 is pulled back.
  • the effective lever arms on the drive lever 7 are selected so that the lever arm formed between the pivot bearing 8 and the bearing of the pressure roller 13 is substantially smaller than the lever arm between the pivot bearing 8 and the point of attack of the drive rod 6 at the lower end of the drive lever 7 causes the drive lever 7 a power transmission, which is about 1: 4 in the illustrated embodiment.
  • the push rods 10 have a cross section of a square standing on the tip. The clamping plates 11 can therefore not rotate on the push rods 10, so that a separate guidance of the clamping plates 11 is not necessary.
  • FIG. 3 only in a very simplified form differs from the example described above essentially only in that there are three push rods 10 which serve to press out three cartridges 1 accommodated in the pistol housing 3.
  • the drive lever has two downwardly projecting arms 7a, between which the drive rod 6 is articulated.
  • push rods in a different number can also be driven in a corresponding manner, which depends on the number of material components to be mixed and thus the number of cartridges held in the gun.
  • the drive lever 7 is here U-shaped; a pressure roller 13 is mounted between its two downwardly projecting legs and presses in the manner already described on a (not shown) clamping plate for the push rod 10.
  • the drive rod 6 is hinged at the lower end of the lever 7 "-0.
  • a detent pawl 16 is mounted on the pivotable drive lever 7 for each push rod 10, which engages with its tip in a toothing 17 on the "• S push rod 10.
  • the drive lever 7 swivels forward, the Push rod 10 entrained; when the drive lever 7 moves backward, the latch 16 disengages from the toothing 17.
  • the drive lever 7 is at its upper end

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Coating Apparatus (AREA)

Abstract

A metering and mixing gun serves for pressing material components out of several cartridges (1) which are accommodated in a gun casing (3). The pusher rods (10) belonging to each cartridge (1) each have an engagement plate (8) which when tilted entrains the pusher rods in one direction. A common drive lever (7) pivotally arranged in the gun casing (3) actuates each of the engagement plates (11) via pressure rollers (13). The drive lever (7) located in the gun casing (3) enables even uneven piston pressure forces to be transmitted to the pusher rods (10) without lateral distortion thereof.

Description

Dosier- und Mischpistole für Mehrkomponenten-KunststoffeDosing and mixing gun for multi-component plastics
Die Erfindung betrifft eine Dosier- und Mischpistole für Mehrkomponenten-Kunststoffe, deren Materialkomponenten aus mehreren in einem Pistolengehäuse angeordneten Kartu¬ schen mittels Schubkolben auspressbar sind, deren Schub- Stangen durch eine gemeinsame Antriebseinrichtung antreib¬ bar sind.The invention relates to a metering and mixing gun for multi-component plastics, the material components of which can be pressed out of several cartridges arranged in a gun housing by means of push pistons, the push rods of which can be driven by a common drive device.
Bei einer bekannten Dosier- und Mischpistole dieser Gattung (DE-GM 85 15 391) sind die beiden Schubstangen für die Schubkolben der beiden nebeneinanderliegenden Kartuschen an ihrem hinteren Ende über ein Joch mit einer gemeinsamen, parallel zu den Schubstangen angeordneten zentralen Antrieb stange verbunden, die durch die Antriebseinrichtung der Dosier- und Mischpistole angetrieben wird.In a known metering and mixing gun of this type (DE-GM 85 15 391), the two push rods for the push pistons of the two adjacent cartridges are connected at their rear end via a yoke with a common central drive rod arranged parallel to the push rods is driven by the drive device of the dosing and mixing gun.
Hierbei wird die gesamte Antriebskraft über die zentrale An triebsstange eingeleitet und über das Joch auf die beiden Schubstangen verteilt. In vielen Anwendungsfällen haben di zu mischenden Materialkomponenten sehr unterschiedliche Viskositäten, sodaß die zum Auspressen erforderlichen Kräfte sehr unterschiedlich sind. Solche unterschiedlichen Auspress kräfte können auch auftreten, wenn Kartuschen mit unter- schiedlichem Kolbendurchmesser verwendet werden, weil die Materialkomponenten in einem von 1 abweichendem Mischungs¬ verhältnis gemischt werden. Diese unterschiedlichen Schub¬ stangenkräfte führen dazu, daß die Schubstangen und die zentrale Antriebsstange einseitig belastet und daher nach einer Seite gebogen werden. Dies kann zu einer Klemmwirkung und damit zu einer erhöhten Reibung oder sogar Blockierung der Antriebseinrichtung führen. Wenn die Schubstangen und die zentrale Antriebsstange zur Gewichtsverminderung möglich dünn ausgeführt werden, führen die ungleichmäßig angreifende Kräfte zu bleibenden Verformungen.Here, the entire drive force is introduced via the central drive rod and distributed over the yoke to the two push rods. In many applications, di to be mixed material components very different viscosities, so that the forces required for pressing are very different. Such different squeezing forces can also occur if cartridges with different piston diameters are used because the material components are mixed in a mixing ratio different from 1. These different push rod forces mean that the push rods and the central drive rod are loaded on one side and are therefore bent to one side. This can lead to a clamping effect and thus to increased friction or even blocking of the drive device. If the push rods and the central drive rod are made as thin as possible to reduce weight, the unevenly acting forces lead to permanent deformations.
Aufgabe der Erfindung ist es daher, eine Dosier- und Misch¬ pistole der eingangs genannten Gattung so auszubilden, daß auch bei sehr unterschiedlichen und hohen Kolbenpresskräften keine seitlichen Kraftkomponenten auf die Schubstangen ausge übt werden; eine seitliche Verformung der Schubstangen soll mit Sicherheit ausgeschlossen werden.The object of the invention is therefore to design a metering and mixing gun of the type mentioned in such a way that no lateral force components are exerted on the push rods even with very different and high piston pressing forces; Lateral deformation of the push rods should be excluded with certainty.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß auf jeder Schubstange ein die Schubstange nur in einer Richtung mitnehmendes, in Stangenlängsrichtung bewegbares Rastbauteil angeordnet ist, daß ein gemeinsamer Antriebshebel auf beiden Seiten im Pistolengehäuse schwenkbar gelagert ist und mit jedem Rastbauteil in Eingriff steht, und daß am unteren Ende des Antriebhebels eine die Antriebskraft einleitende Antrie stange angreift.This object is achieved in that on each push rod the push rod is only in one direction, movable in the longitudinal direction of the locking component is arranged, that a common drive lever is pivotally mounted on both sides in the gun housing and is in engagement with each locking component, and that on lower end of the drive lever engages a drive rod initiating the drive force.
Die Kraftübertragung an die Schubstangen erfolgt hierbei ni am hinteren Ende der Schubstangen, sondern an dem Schub¬ stangenabschnitt, der sich innerhalb des Pistolengehäuses befindet. Der gemeinsame Antriebshebel ist unmittelbar im Pistolengehäuse gelagert. Ungleichmäßige Kolbenpresskräfte, die den Antriebshebel einseitig belasten, werden dadurch unmittelbar am Pistolengehäuse abgestützt und führen nicht zu seitlichen Kraftkomponenten, die auf die Schubstangen wirken. Eine Verformung oder Klemmung der Schubstangen oder der Antriebseinrichtung ist dadurch ausgeschlossen.The power is not transmitted to the push rods here at the rear end of the push rods, but at the push rod section, which is located within the gun housing. The common drive lever is mounted directly in the gun housing. Uneven piston pressing forces, which load the drive lever on one side, are thereby supported directly on the gun housing and do not lead to lateral force components that act on the push rods. A deformation or clamping of the push rods or the drive device is excluded.
Da auf eine gemeinsame zentrale Antriebsstange und ein die Schubstangen verbindendes Joch verzichtet werden kann, ver¬ ringert sich das Gewicht der Do sier- und Mischpistole, wodu die Handhabung als Handgerät erleichtert wird.Since there is no need for a common central drive rod and a yoke connecting the push rods, the weight of the metering and mixing pistol is reduced, which makes handling as a handheld device easier.
Der Antrieb einer Kolbenschubstange durch ein die Schubstang nur in einer Richtung mitnehmendes, in Stangenlängsrichtung bewegbares Rastbauteil ist bei Dosierpistolen für nur eine einzige Kartusche bekannt. Auch bei der erwähnten bekannten Dosier- und Mischpistole (DE-GM 85 15 391) wird ein solches in Stangenlängsrichtung bewegbares Rastbauteil zum Antrieb verwendet, jedoch nicht für die Schubstangen, sondern für di zentrale Antriebsstange.The drive of a piston push rod by a locking component which moves the push rod only in one direction and can be moved in the longitudinal direction of the rod is known in the case of metering pistols for only a single cartridge. Also in the case of the known metering and mixing pistol (DE-GM 85 15 391), such a locking component which is movable in the longitudinal direction of the rod is used for the drive, but not for the push rods, but for the central drive rod.
In bevorzugter Ausführungsform des Erfindungsgedankens ist vorgesehen, daß der Hebelarm des Antriebshebels zwischen de Schwenklagerung und der Verbindungsstelle zu jedem Rastbaut wesentlich kleiner ist als der Hebelarm zwischen der Schweh lagerung und der Angriffsstelle der Antriebsstange am Antri hebel. Dadurch bewirkt der Antriebshebel eine Bewegungsunte setzung und somit eine Kraftübersetzung zwischen der die Antriebskraft einleitenden Antriebsstange und den Schubkolb der Kartuschen. Eine solche KraftüberSetzung ist besonders erwünscht, wenn die zum Auspressen von mehreren Kartuschen erforderlichen Kolbenpresskräfte sehr hoch sind und der Antrieb mittels eines Handhebels erfolgt. Aber auch beim Antrieb durch einen Pneumatikzylinder ist eine solche Kraft¬ übersetzung vorteilhaft, weil der die Antriebsstange antrei¬ bende Pneumatikzylinder dann mit kleinerem Kolbenquerschnitt und somit geringerem Gewicht ausgelegt werden kann.In a preferred embodiment of the inventive concept it is provided that the lever arm of the drive lever between the pivot bearing and the connection point to each latching structure is significantly smaller than the lever arm between the suspension and the point of attack of the drive rod on the drive lever. As a result, the drive lever causes a movement movement and thus a force transmission between the drive rod which initiates the drive force and the thrust piston of the cartridges. Such a power transmission is particularly desirable if it is for pressing out several cartridges required piston press forces are very high and the drive is carried out by means of a hand lever. However, such a power transmission is also advantageous when driven by a pneumatic cylinder, because the pneumatic cylinder driving the drive rod can then be designed with a smaller piston cross-section and thus less weight.
Weiterevorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Further advantageous refinements of the inventive concept are the subject of further subclaims.
Die Erfindung wird nachfolgend an Ausführungsbeispielen nähe erläutert, die in der Zeichnung dargestellt sind. Es zeigt:The invention is explained below using exemplary embodiments which are shown in the drawing. It shows:
Fig. 1 eine Dosier- und Mischpistole in einer Seitenansicht und teilweise im Schnitt,1 is a dosing and mixing gun in a side view and partially in section,
Fig. 2 ein Schnitt längs der Linie II - II in Fig. 1 , wobei der in Fig. 1 gezeigte Teilschnitt mit der Linie I - I in Fig. 2 bezeichnet ist, Fig. 3 einen Teilschnitt ähnlich der Fig.2 bei einer Aus- führungsform mit drei Schubstangen für drei Kartusch2 shows a section along the line II-II in FIG. 1, the partial section shown in FIG. 1 being designated by the line I-I in FIG. 2, FIG. 3 shows a partial section similar to FIG - Guide form with three push rods for three cartridges
Fig. 4 in einem Schnitt ähnlich der Fig. 3 eine Ausführungs form mit einer einzigen Schubstange und Fig. 5 in einer Teilansicht entsprechend der Fig. 1 eine Au führungsform mit einer Rastklinke als Rastbauteil fü die Schubstange.Fig. 4 in a section similar to FIG. 3, an execution form with a single push rod and Fig. 5 in a partial view corresponding to FIG. 1, an Au guide form with a latch as a locking component for the push rod.
Die in Fig. 1 gezeigte Dosier- und Mischpistole ist dazu bestimmt, aus zwei parallel nebeneinanderliegenden Kartusche 1, von denen in Fig. 1 nur eine Kartusche angedeutet ist, zw Materialkomponenten auszupressen, die in einer Mischdüse ge¬ mischt und ausgegeben werden. Hierbei handelt es sich beispi weise um Zweikomponenten-Kunststoffe, deren beide Material¬ komponenten nach dem Mischen und Dosieren aushärten. In einem die beiden Kartuschen 1 aufnehmenden Pistolenge¬ häuse 3 ist ein Betätigungsgriff 4 schwenkbar gelagert, der sich vor einem mit dem Pistolengehäuse 3 verbundenen Hand¬ griff 5 befindet. Der obere Arm des als zweiarmiger Hebel ausgebildeten Betätigungsgriffs 4 ist über eine nach hinten geführte, gelenkig angebrachte AntriebsStange 6 mit einem Antriebshebel 7 verbunden, der in seinem oberen Teil zu einem Joch verbreitert ist (Fig. 2) , das am oberen Ende des Antriebshebels 7 in seitlichen Lagerungen 8 im Pistolenge- häuse 3 schwenkbar gelagert ist.The metering and mixing pistol shown in FIG. 1 is intended to squeeze out two material components that are mixed and dispensed in a mixing nozzle from two cartridges 1 lying parallel next to one another, of which only one cartridge is indicated in FIG. 1. These are, for example, two-component plastics, the two material components of which harden after mixing and metering. An actuating handle 4 is pivotally mounted in a pistol housing 3 receiving the two cartridges 1 and is located in front of a handle 5 connected to the pistol housing 3. The upper arm of the operating handle 4, which is designed as a two-armed lever, is connected via a rearwardly guided, articulated drive rod 6 to a drive lever 7, which is widened in its upper part to form a yoke (FIG. 2), which is located at the upper end of the drive lever 7 is pivotally mounted in side mountings 8 in the gun housing 3.
Die beiden Schubkolben 9 der beiden Kartuschen 1 sind jeweil mit einer Schubstange 10 verbunden, die sich im Pistolenge¬ häuse 3 nach hinten erstreckt. Auf jeder Schubstange 10 ist als Rastbauteil eine Klemmplatte 11 angeordnet, die die Schu stange 10 umgreift und nach vorn über eine Druckfeder 12 am Pistolengehäuse 3 abgestützt ist. Außermittig zur Schubstang 10 greift an der Klemmplatte 11 jeweils eine am Antriebshebe 7 drehbar gelagerte Druckrolle 13 an, die ein Druckstück bildet, das die Antriebskraft vom Antriebshebel 7 auf die Klemmplatte 11 überträgt. Durch den außermittigen Kraftan¬ griff der Druckrollen 13 werden die Klemmplatten 11 auf den Schubstangen 10 verkantet und dadurch festgeklemmt, sodaß sie die Schubstangen 10 bei ihrer Bewegung nach vorn mitneh- men, wodurch über den Schubkolben 9 eine Kolbenpresskraft a die Kartuschen 1 ausgeübt wird, wenn der Betätigungsgriff 4 nach hinten gezogen wird.The two push pistons 9 of the two cartridges 1 are each connected to a push rod 10 which extends rearward in the pistol housing 3. On each push rod 10, a clamping plate 11 is arranged as a locking component, which engages around the shoe rod 10 and is supported forwardly via a compression spring 12 on the gun housing 3. Off-center to the push rod 10, a pressure roller 13, which is rotatably mounted on the drive lever 7, acts on the clamping plate 11, which forms a pressure piece that transmits the driving force from the drive lever 7 to the clamping plate 11. Due to the eccentric force of the pressure rollers 13, the clamping plates 11 are tilted on the push rods 10 and thereby clamped, so that they take the push rods 10 with them when they move forward, so that a piston pressing force a is exerted on the cartridges 1 by the push piston 9, when the operating handle 4 is pulled back.
Wird der Betätigungsgriff 4 losgelassen, so wird der Antrie hebel 7 nach hinten geschwenkt. Die entlasteten Klemmplatte 11 werden aus ihrer Klemmung auf den Schubstangen 10 gelöst und durch die Druckfedern 12 ebenfalls nach hinten bewegt.If the operating handle 4 is released, the drive lever 7 is pivoted backwards. The relieved clamping plate 11 are released from their clamping on the push rods 10 and also moved backwards by the compression springs 12.
Bei dieser Bewegung halten zwei an der Rückseite des Pistol gehäuses 3 schwenkbar gelagerte Stützklemmplatten 14 die be den Schubstangen 10 fest. Die Stützklemmplatten 14 sind jeweils über eine Druckfeder 15 nach vorn am Pistolenge¬ häuse 3 abgestützt. Bei einer Vorschubbewegung werden die Schubstangen 10 von den Stützklemmplatten 14 freigegeben; eine Rückwärtsbewegung der Schubstangen 10 wird durch ein Verkanten der Stützklemmplatten 14 verhindert. Das Zurück¬ ziehen der Schubstangen 10 zumEntnehmen der Kartuschen 1 ist nur möglich, wenn die Stützklemmplatten 14 von Hand nach vorn gegen das Pistolengehäuse 3 gedrückt werden.During this movement, two on the back of the pistol housing 3 pivotally mounted support clamping plates 14 be the push rods 10 firmly. The support clamping plates 14 are each supported forwardly on the pistol housing 3 by means of a compression spring 15. During a feed movement, the push rods 10 are released from the support clamping plates 14; a backward movement of the push rods 10 is prevented by tilting the support clamping plates 14. It is only possible to pull the push rods 10 back to remove the cartridges 1 if the support clamping plates 14 are pressed forward against the gun housing 3 by hand.
Die wirksamen Hebelarme am Antriebshebel 7 sind so gewählt, daß der zwischen der Schwenklagerung 8 und der Lagerung der Druckrolle 13 gebildete Hebelarm wesentlich kleiner ist als der Hebelarm zwischen der Schwenklagerung 8 und der Angriffs- stelle der Antriebsstange 6 am unteren Ende des Antriebshebe 7. Dadurch bewirkt der Antriebshebel 7 eine KraftüberSetzung, die beim dargestellten Ausführungsbeispiel etwa 1:4 beträgt. Wie man aus Fig. 2 erkennt, haben bei dem in den Fig. 1 und 2 dargestellten Ausführungsbeispiel die Schubstan gen 10 einen Querschnitt eines auf der Spitze stehenden Qua¬ drates. Die Klemmplatten 11 können sich daher auf den Schub¬ stangen 10 nicht drehen,so daß eine gesonderte Führung der Klemmplatten 11 nicht erforderlich ist.The effective lever arms on the drive lever 7 are selected so that the lever arm formed between the pivot bearing 8 and the bearing of the pressure roller 13 is substantially smaller than the lever arm between the pivot bearing 8 and the point of attack of the drive rod 6 at the lower end of the drive lever 7 causes the drive lever 7 a power transmission, which is about 1: 4 in the illustrated embodiment. As can be seen from FIG. 2, in the exemplary embodiment shown in FIGS. 1 and 2, the push rods 10 have a cross section of a square standing on the tip. The clamping plates 11 can therefore not rotate on the push rods 10, so that a separate guidance of the clamping plates 11 is not necessary.
Das in Fig. 3 nur stark vereinfacht dargestellte Ausführungs beispiel unterscheidet sich von dem vorher beschriebenen Bei spiel im wesentlichen nur dadurch, daß hierbei drei Schub¬ stangen 10 vorhanden sind, die dazu dienen, drei in dem Pi¬ stolengehäuse 3 aufgenommene Kartuschen 1 auszupressen. Der Antriebshebel hat hierbei zwei nach unten ragende Arme 7a, zwischen denen die AntriebsStange 6 angelenkt ist.The embodiment shown in FIG. 3 only in a very simplified form differs from the example described above essentially only in that there are three push rods 10 which serve to press out three cartridges 1 accommodated in the pistol housing 3. The drive lever has two downwardly projecting arms 7a, between which the drive rod 6 is articulated.
Es versteht sich, daß in entsprechender Weise auch Schub¬ stangen in einer anderen Anzahl angetrieben werden können, die von der Anzahl der zu mischenden Materialkomponenten und somit der Anzahl der in der Pistole aufgenommenen Kartuschen abhängt. Beispielsweise ist in Fig. 4 gezeigt, daß in entsprechender Weise auch der Antrieb für nur eine 5 einzige Schubstange 10 erfolgen kann. Der Antriebshebel 7 ist hierbei U-förmig; zwischen seinen beiden nach unten ragenden Schenkeln ist eine Druckrolle 13 gelagert, die in der schon beschriebenen Weise auf eine (nicht gezeigte') Klemmplatte für die Schubstange 10 drückt. Auch hierbei ist "-0 die Antriebsstange 6 am unteren Ende des Hebels 7 angelenkt.It goes without saying that push rods in a different number can also be driven in a corresponding manner, which depends on the number of material components to be mixed and thus the number of cartridges held in the gun. For example, it is shown in FIG. 4 that the drive for only a single push rod 10 can take place in a corresponding manner. The drive lever 7 is here U-shaped; a pressure roller 13 is mounted between its two downwardly projecting legs and presses in the manner already described on a (not shown) clamping plate for the push rod 10. Also in this case, the drive rod 6 is hinged at the lower end of the lever 7 "-0.
Bei dem Ausführungsbeispiel nach Fig. 5 ist am schwenkbaren Antriebshebel 7 für jede Schubstange 10 eine Rastklinke 16 gelagert, die mit ihrer Spitze in eine Zahnung 17 an der "•S Schubstange 10 greift. Bei der Antriebs-Schwenkbewegung des Antriebshebels 7 nach vorn wird die Schubstange 10 mitge¬ nommen; bei der Rückwärtsbewegung des Antriebshebels 7 ge¬ langt die Rastklinke 16 außer Eingriff mit der Zahnung 17. Auch hierbei ist der Antriebshebel 7 an seinem oberen Ende5, a detent pawl 16 is mounted on the pivotable drive lever 7 for each push rod 10, which engages with its tip in a toothing 17 on the "• S push rod 10. When the drive lever 7 swivels forward, the Push rod 10 entrained; when the drive lever 7 moves backward, the latch 16 disengages from the toothing 17. Here too, the drive lever 7 is at its upper end
20 in der Lagerung 8 am Pistolengehäuse gelagert. Je nach der Anzahl der Schubstangen 10, die angetrieben werden müssen, sind mehrere Rastklinken 16 am Antriebshebel 7 angebracht. 20 stored in storage 8 on the gun housing. Depending on the number of push rods 10 that have to be driven, a plurality of latches 16 are attached to the drive lever 7.

Claims

Dosier- und Mischpistole für Mehrkomponenten-KunststoffeP a t e n t a n s p r ü c h e Dosing and mixing gun for multi-component plastics
1. Dosier- und Mischpistole für Mehrkomponenten-Kunststoffe, deren Materialkomponenten aus mehreren in einem Pistolen¬ gehäuse angeordneten Kartuschen mittels Schubkolben aus- pressbar sind, deren Schubstangen durch eine gemeinsame Antriebseinrichtung antreibbar sind, dadurch gekennzeich¬ net, daß auf jeder Schubstange (10) ein die Schubstange (10) nur in einer Richtung mitnehmendes, in Stangenlängs¬ richtung bewegbares Rastbauteil (11,16) angeordnet ist, daß ein gemeinsamer Antriebshebel (7) auf beiden Seiten im Pistolengehäuse (3) schwenkbar gelagert ist und mit jedem Rastbauteil (11, 16) in Eingriff steht, und daß am unteren Ende des Antriebshebels (7) eine die Antriebs kraft einleitende Antriebsstange (6) angreift.1. Dosing and mixing gun for multi-component plastics, the material components of which can be pressed out of several cartridges arranged in a gun housing by means of push pistons, the push rods of which can be driven by a common drive device, characterized in that on each push rod (10) a locking component (11, 16) which moves the push rod (10) only in one direction and is movable in the longitudinal direction of the rod is arranged such that a common drive lever (7) is pivotably mounted on both sides in the gun housing (3) and with each locking component (11 , 16) is engaged, and that at the lower end of the drive lever (7) engages a drive rod (6) which initiates the drive force.
2. Dosier- und Mischpistole nach Anspruch 1, dadurch gekenn zeichnet, daß der Hebelarm des Antriebshebels (7) zwi¬ schen der Schwenklagerung (8) und der Verbindungsstelle zu jedem Rastbauteil (11, 16) wesentlich kleiner ist als der Hebelarm zwischen der Schwenklagerung (8) und der An griffsstelle der Antriebsstange (6) am Antriebshebel (7).2. Dosing and mixing gun according to claim 1, characterized in that the lever arm of the drive lever (7) between the pivot bearing (8) and the connection point to each locking component (11, 16) is significantly smaller than the lever arm between the pivot bearing (8) and the An Grip point of the drive rod (6) on the drive lever (7).
3. Dosier- und Mischpistole nach Anspruch 1, dadurch gekenn- zeichnet, daß die Rastbauteile durch Verkantung auf den Schubstangen (10) klemmbare Klemmplatten (11) sind, an denen der Antriebshebel (7) über jeweils ein Druckstück (13) außerhalb der Schubstangenachse angreift.3. Dosing and mixing gun according to claim 1, characterized in that the latching components are clampable clamping plates (11) by canting on the push rods (10), on which the drive lever (7) via a pressure piece (13) outside the push rod axis attacks.
4. Dosier- und Mischpistole nach Anspruch 3, dadurch gekenn¬ zeichnet, daß die Druckstücke am Antriebshebel (7) dreh¬ bar gelagerte Druckrollen (13) sind.4. dosing and mixing gun according to claim 3, characterized gekenn¬ characterized in that the pressure pieces on the drive lever (7) are rotatably mounted pressure rollers (13).
5. Dosier- und Mischpistole nach Anspruch 1, dadurch gekenn- zeichnet, daß die Rastbauteile Rastklinken (16) sind, die in eine Zahnung (17) auf der jeweils zugeordneten Schub¬ stange (10) eingreifen und die am Antriebshebel (7) schwe bar gelagert sind. 5. Dosing and mixing gun according to claim 1, characterized in that the latching components are latches (16) which engage in a toothing (17) on the respectively associated push rod (10) and which on the drive lever (7) is silent are stored in cash.
PCT/EP1987/000039 1986-01-31 1987-01-28 Metering and mixing gun for multi-component plastics WO1987004645A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863602975 DE3602975A1 (en) 1986-01-31 1986-01-31 DOSING AND MIXING GUN FOR MULTI-COMPONENT PLASTICS
DEP3602975.0 1986-01-31

Publications (1)

Publication Number Publication Date
WO1987004645A1 true WO1987004645A1 (en) 1987-08-13

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Application Number Title Priority Date Filing Date
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EP (1) EP0259368A1 (en)
DE (1) DE3602975A1 (en)
WO (1) WO1987004645A1 (en)

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WO1993006940A1 (en) * 1991-09-30 1993-04-15 Unes A/S Dispensing device for dispensing at least two fluids
US6585696B2 (en) 2000-12-22 2003-07-01 Baxter International, Inc. Method and apparatus for applying a medically useful multiple component material

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US7971758B2 (en) 2005-11-10 2011-07-05 Black & Decker Inc. Caulk gun

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US3029653A (en) * 1958-04-24 1962-04-17 Gustav W Nilsson Dual drive means for a caulking device
GB2065233A (en) * 1979-10-26 1981-06-24 Impa It Mastici Prodotti An apparatus for accommodating at least two containers of products and causing the delivery of the products from said containers in predetermined and varying proportions
DE3128611A1 (en) * 1981-07-20 1983-01-27 Hilti AG, 9494 Schaan DOSING UNIT FOR MULTI-COMPONENT MEASURES
DE3232385A1 (en) * 1982-08-31 1984-03-01 Hilti AG, 9494 Schaan Appliance for the metered dispensing of masses
FR2532862A1 (en) * 1982-09-15 1984-03-16 Hilti Ag PORTABLE APPARATUS FOR DISTRIBUTING PASTA WITH MULTIPLE COMPONENTS
DE8515391U1 (en) * 1985-05-24 1985-10-31 DETEC Kunststofftechnik GmbH, 6080 Groß-Gerau Dosing and mixing device for multi-component plastics

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029653A (en) * 1958-04-24 1962-04-17 Gustav W Nilsson Dual drive means for a caulking device
GB2065233A (en) * 1979-10-26 1981-06-24 Impa It Mastici Prodotti An apparatus for accommodating at least two containers of products and causing the delivery of the products from said containers in predetermined and varying proportions
DE3128611A1 (en) * 1981-07-20 1983-01-27 Hilti AG, 9494 Schaan DOSING UNIT FOR MULTI-COMPONENT MEASURES
DE3232385A1 (en) * 1982-08-31 1984-03-01 Hilti AG, 9494 Schaan Appliance for the metered dispensing of masses
FR2532862A1 (en) * 1982-09-15 1984-03-16 Hilti Ag PORTABLE APPARATUS FOR DISTRIBUTING PASTA WITH MULTIPLE COMPONENTS
DE8515391U1 (en) * 1985-05-24 1985-10-31 DETEC Kunststofftechnik GmbH, 6080 Groß-Gerau Dosing and mixing device for multi-component plastics

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006940A1 (en) * 1991-09-30 1993-04-15 Unes A/S Dispensing device for dispensing at least two fluids
US5376079A (en) * 1991-09-30 1994-12-27 Holm; Niels E. Dispensing device for dispensing at least two fluids
US5520658A (en) * 1991-09-30 1996-05-28 E. R. Squibb & Sons, Inc. Dispensing device for dispensing at least two fluids
US6585696B2 (en) 2000-12-22 2003-07-01 Baxter International, Inc. Method and apparatus for applying a medically useful multiple component material

Also Published As

Publication number Publication date
DE3602975A1 (en) 1987-08-06
EP0259368A1 (en) 1988-03-16

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