EP2445652A1 - Clamping tool in the form of a cartridge discharging device - Google Patents

Clamping tool in the form of a cartridge discharging device

Info

Publication number
EP2445652A1
EP2445652A1 EP10722371A EP10722371A EP2445652A1 EP 2445652 A1 EP2445652 A1 EP 2445652A1 EP 10722371 A EP10722371 A EP 10722371A EP 10722371 A EP10722371 A EP 10722371A EP 2445652 A1 EP2445652 A1 EP 2445652A1
Authority
EP
European Patent Office
Prior art keywords
clamping
cartridge
cartridge tube
spring
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10722371A
Other languages
German (de)
French (fr)
Other versions
EP2445652B1 (en
Inventor
Zbigniew Noniewicz
Hans-Jürgen Schüller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wolfcraft GmbH
Original Assignee
Wolfcraft 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 Wolfcraft GmbH filed Critical Wolfcraft GmbH
Publication of EP2445652A1 publication Critical patent/EP2445652A1/en
Application granted granted Critical
Publication of EP2445652B1 publication Critical patent/EP2445652B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • 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

Definitions

  • the invention relates to a device for expressing a particular pasty mass from a substantially cylindrical cartridge by driving a piston in a cartridge tube in the direction of an outlet opening, with a base on which the outlet opening opposite the end of the cartridge tube can be placed and with clamping pieces , which press by spring force at the level of the base against the outer wall of the end of the cartridge tube.
  • Such a cartridge ejecting device is known from EP 1 034847 A2.
  • the basic housing which supports a propulsion lever which can be pivoted against a handle in order to displace a punch located at the end of a push rod into the cartridge tube of a cartridge, in order to drive the piston arranged there in the direction of an outlet opening, has a base on which the End of the cartridge tube is attachable.
  • the base is surrounded by a plurality of radially inwardly directed claws having spring ring.
  • the claws of the spring ring dig into the outer circumferential surface of the cartridge tube at the level of the base.
  • An axially displaceable release slide is provided to relocate the claws from their engagement position to the outer wall of the cartridge tube, so that the cartridge tube can be pulled off the base.
  • a clamping jaw in the form of a punch sits at the end of a rod displaceably mounted in a base body in order to advance the piston of the cartridge in the direction of the outlet opening.
  • the push rod is advanced in a clamping direction by means of a stepping gear, which has a driving lever and a driving plate. After the respective stroke in the clamping direction, the push rod of a Backstop inhibited against reverse displacement in the opposite direction. By means of a release lever, the reverse lock can be shifted from its locked position.
  • clamping elements acting on the inner wall of the cartridge tube are provided.
  • the invention has for its object to further develop the generic device nutzsvorteilhaft.
  • the object is achieved by the invention specified in the claims.
  • the clamping pieces engage at two diametrically opposite locations on the cartridge tube.
  • the restraint thus takes place only at two opposite locations.
  • the clamping pieces are arranged at the ends of an actuating lever acted upon by a spring in a clamping position.
  • the actuating lever can be designed multiarm and in particular two armed.
  • the two axes of rotation of the actuating lever are parallel to each other.
  • the basic housing may have two diametrically opposed chambers, in which the actuating levers are mounted.
  • Two arms of an actuating lever are formed and are in particular in a 180 ° stretched position one behind the other, that they close the chamber to the outside.
  • An arm of the actuating lever forms an actuating arm, which is responsible for displacement of the
  • Clamp is to move in the housing inward direction. This is done against the restoring force of a compression spring, located on the actuating arm and on the ground a bearing opening of the base housing is supported. To release the clamping position, the two actuating arms of the actuating lever must be shifted towards each other.
  • the clamping arms of the actuating levers projecting at an obtuse angle from the actuating arm each carry clamping pieces formed by a metal plate.
  • the clamping pieces have cutting edges extending on a circular arc, which lie in an inclined position in the clamping position on the outer wall of the cartridge tube. If a pull is exerted on the cartridge, the blades dig deeper into the outer wall of the cartridge tube.
  • the abutment for the clamping force is formed by a jacket wall of the base. This has in the area in which the cartridge tube is acted upon by the cutting edge, a circular arc-shaped outline.
  • the outline contour of the base is adapted in this area the course of the inner wall of the cartridge tube.
  • the cartridge tube can be through the diametrically opposite
  • the base is preferably formed by a ring structure which is flattened at opposite points.
  • the base has a passage opening through which the push rod protrudes.
  • a punch On the free end of the push rod sits a punch, which acts on the piston of the cartridge.
  • a stepping gear is provided, which has a propulsion lever, which is mounted pivotably about an axis of rotation on the base housing and to achieve a pumping movement in the direction of a handle is displaced.
  • a drive arm of the drive lever engages a driver, which may be a driver plate.
  • a driver which gets in a tilted clamping position to the push rod and is taking the push rod against the restoring force of a return spring in a Forward clamping direction.
  • a locking plate backpressure which is supported at one end to a housing-fixed support stop.
  • a return spring At the opposite end of the clamping piece is acted upon by a return spring and held by this in a clamping position on the push rod.
  • the push rod In the forward displacement, the push rod can slide through an opening in the clamping plate.
  • a release lever In order to release the reverse lock, a release lever must be pivoted, which engages with an actuating shoulder on the acted upon by the return spring end of the clamping piece to bring the latter from the clamping position.
  • a second aspect of the invention relates to the development of the previously described back pressure lock on a clamping tool, in particular in the form of a cartridge ejecting device with one at the end of a in a
  • Main body displaceably mounted rod, in particular push rod arranged clamping jaw, in particular in the form of a punch, which is vorverlagerbar by means of a stepping gear in a clamping direction and with a releasable back pressure lock for inhibiting a backward displacement of the rod in the opposite direction.
  • the non-return after a forward displacement occurs only after a slight shift back into effect.
  • This is particularly advantageous when the clamping tool is a cartridge ejecting device.
  • the stamp compresses the pasty stored in the cartridge
  • the locking member of the reverse lock may be spaced after the displacement of a support stop. Only after completion of the forward displacement can be shifted back to an abutment position of the locking member to the support stop by pressure on the jaw, so the punch the rod.
  • the support stop, on which the locking member is supported for the development of its inhibition position, may be adjacent to a movement end stop in the forward displacement direction.
  • the locking member can strike when it is dragged in the forward displacement of the push rod in the clamping direction by a small distance. This can be done simultaneously with a compression of the return spring. But it is also envisaged that the locking member is acted upon in the clamping direction of a propulsion spring in the region of the support stop and theincisendanschlages and that this propulsion spring a larger spring force de- cutes than the return spring, so that the locking member rests permanently onfoldsendanschlag. Also in this variant, it is possible to shift the punch or the push rod slightly after completion of the propulsion by pressing the propulsion lever.
  • FIG. 1 shows a perspective view of an embodiment of a cartridge ejection device
  • 2 shows a section along the section line II - II in Figure 1;
  • FIG. 3 shows an exploded view of the essential elements of the cartridge expressing device
  • FIG. 4 shows a further perspective view of the cartridge ejecting device in the region of an insertion opening 38 for a cartridge tube 1 of a cartridge; 5 shows a section along the line V - V in Figure 4, wherein the end of a cartridge tube 1 is held in a clamping position.
  • Fig. 5a is a view according to Figure 5, wherein the cartridge tube has been released.
  • FIG. 6 shows a section along the line VI - VI in Fig. 5a;
  • FIG. 7 shows an illustration according to FIG. 2 with the propulsion lever 8 actuated in the advancing direction
  • Fig. 8 is a sequential view of FIG. 7, wherein the punch 13 and the
  • FIG. 9 is a representation according to FIG. 2 with brought in release position backpressure
  • FIGS. 1 to 9 shows a second embodiment.
  • the embodiment illustrated in FIGS. 1 to 9 has one Plastic-made base body 6, which has at its front end an insertion opening 38 for insertion of a cartridge tube 1 of a filled with a pasty mass cartridge.
  • Inside the cartridge tube 1 there is a piston 2.
  • the cartridge forms a discharge opening 4 with a nozzle 5, through which a pasty mass 3 stored inside the cartridge can be pressed out by pressure on the piston 2 ,
  • annular base 21 For receiving the end I 1 of the cartridge tube 1, an annular base 21 is provided in the region of the bottom of the insertion opening 38.
  • the wall of the insertion opening 38 is formed by an inner cylinder.
  • Two diagonally opposite areas of the base 21 are formed by a running on a circular arc contour line webs having radially inwardly extending support ribs 26.
  • the course of the wall 22 of the base 21 corresponds there to the inner contour of the cartridge tube 1.
  • the base 21 On two diagonally opposite sides, on which no clamping means are provided, the base 21 has flats 21 '.
  • a guide opening 23 In the center of the base 21 is a guide opening 23, in which a push rod 12 is mounted. This carries at its front, projecting into the insertion opening 38 a punch 13, with which the piston 2 can be acted upon in a clamping direction. With a below-described stepping gear, the push rod 12 can be gradually shifted in the clamping direction. It is inhibited with a rinsed Wegsperre also described below on a return displacement.
  • the housing 6 Based on the push rod 12, the housing 6 forms two diametrically opposite chambers 36 which are adjacent to the insertion opening 38.
  • the chambers extend parallel to the insertion opening 38.
  • an actuating lever 27 is mounted in each of the two chambers 36.
  • Each actuating lever 27 forms a projecting in the opening direction of the insertion 38 actuating arm 28.
  • the actuating arms 28 can be displaced towards each other. This takes place against the restoring force of a compression spring 29, which is supported on the bottom of a cup-shaped opening 34.
  • the other end of the compression spring 29 acts on the underside of the actuating arm 28.
  • the actuating lever 27 In a 180 ° extension direction to the actuating arm 28, the actuating lever 27 has a locking arm 37. With the actuating arm 28 and the locking arm 37, the chamber 36 is closed to the outside.
  • a clamping arm 30 protrudes from the back of the lever pair 28, 37 .
  • a clamping piece 31 made of a metal plate.
  • the metal plate extends obliquely to the direction of displacement of the push rod 12 and has at its free end a line running on a curved line
  • the compression spring 29 exerts a force which acts obliquely on the cutting edge 32 in the outer wall of the cartridge tube 1. Because of the inclination of the cutting edge 32 having the clamping piece 31, the blade digs in a train on the cartridge, which takes place by a forward displacement of the punch 13, in the outer wall of the cartridge tube 1 a.
  • the actuating arm 28 does not need to be actuated. Because of the inclination of the clamping piece 31, it is at Inserting a new cartridge into the insertion opening 38 is displaced from the end edge of the end I 1 of the cartridge tube 1.
  • the above-mentioned stepping gear consists of a Vorreteshe- at 8, which is mounted to a housing-fixed axis 24 on the base housing 6.
  • the propulsion lever 8 can be pivoted by the fingers of a hand 7 comprehensive hand in the direction of the handle 7.
  • a drive arm of the drive lever 8 moves in the opposite direction and acts on the edge region of a carrier mounted in a bearing chamber 39 10.
  • the driver 10 is a metal plate with a sharp-edged opening 10 ', which is penetrated by the push rod 12.
  • a likewise restrained by the push rod 12 return spring 11 acts on the driver 10 and holds it in a normal position in which the push rod 12 can slide freely through the opening 10 'of the driver 10.
  • the attack of the drive arm 9 at the edge of the driver 10 causes a tilting of the driver 10, so that the sharp edges of the opening 10 engage in the outer wall of the push rod 12.
  • the push rod 12 is thereby coupled in motion with the driver 10 and is entrained by the driver 10 against the restoring force of the return spring 11 in the clamping direction.
  • the seated at the end of the push rod 12 punch 13 acts on the piston 2 of the cartridge.
  • a likewise formed by a steel sheet locking member 16 is displaced with.
  • a restoring spring 17, which acts on an edge section of the locking member 16, is compressed.
  • the locking plate 16 If the locking plate 16 is displaced to its stop position on the support stop 19, acts on the locking plate 16, a torque which is maintained in particular by the return spring 17, but also by a force acting on the push rod 12 force. Since the push rod 12 is in the clamping position in the opening 16 ', it can not be displaced counter to the feed direction.
  • This non-return position is shown in FIG. It can be canceled by pivoting a release lever 14 into the position shown in Figure 9.
  • the release lever 14 is thereby pivoted about its pivot axis 25, so that the acted upon by the return spring 17 edge portion of the locking member 16 is displaced by an actuating shoulder 15.
  • the return spring 17 is tensioned and the locking member 16 is pivoted about the support stop 19 until the push rod 12 can pass freely through the opening 16 '.
  • a propelling spring 18 acts on the locking member 16.
  • the effective direction of the advancing spring 18 is opposite to the direction of action of the return spring 17 and acts on the locking member 16 in the direction of the movement end stop 20. Is the spring by virtue of the advancing spring 18 being greater than the spring force of the restoring spring 17, the locking member 16 is permanently in contact with the movement end stop 20. By exerting a pressure on the push rod 12 against the clamping direction, the push rod can therefore be shifted back as far as the amount of movement against the tension direction until the locking member 16 strikes the support stop 19.
  • the push rod 12 is not held in the end position of the stroke after completion of a propulsion stroke by the propulsion lever 8. Rather, the push rod is actively shifted back into the restocked position by the force of the restoring spring 17.
  • the punch 13 is displaced by a telescopic push device which is displaceable by an electric drive 40, not shown.
  • a telescopic push device which is displaceable by an electric drive 40, not shown.
  • 6 batteries and a rotationally driven by a drive motor gear are provided within the body.
  • the motor starts its rotation, which is accompanied by a linear displacement of the plunger 13, not shown, when a button 41, which is arranged in a handle 7 associated with a handle opening, is actuated.
  • a level indicator which is formed by a guided in a slot 46 of the housing 6 pointer 45. Along the slot 46, a scale 44 is provided.
  • the cartridge is held by a clamping device similar to that provided in FIGS. 1 to 9 on a hand-operated squeezing device and which has been described in detail above. All disclosed features are essential to the invention.
  • the disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.
  • the subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications.

Abstract

The invention relates to a device for discharging a mass, particularly a pasty mass, from a substantially cylindrical cartridge by driving a plunger (2) in a cartridge tube (1) forward in the direction of an outlet opening (4), comprising a base (21), on which the end (11) of the cartridge tube (1) opposite the outlet opening can be fitted, and comprising clamping pieces (31), which press against the outer wall of the end (1') of the cartridge tube (1) under spring force (29) level with the base (21). To develop the device in a functionally advantageous manner, it is proposed that the clamping pieces (31) engage the cartridge tube at two diagonally opposite points and actuating levers (27) that are urged into a clamping position by a spring (29) be attached at the ends.

Description

Spannwerkzeug in Form einer Kartuschenausdrückvorrichtung  Clamping tool in the form of a cartridge ejection device
Die Erfindung betrifft eine Vorrichtung zum Ausdrücken einer insbesondere pastösen Masse aus einer im wesentlichen zylindrischen Kartusche durch Vo- rantreiben eines Kolbens in einem Kartuschenrohr in Richtung auf eine Austrittsöffnung, mit einem Sockel, auf dem das der Austrittsöffnung gegenüberliegende Ende des Kartuschenrohres aufsetzbar ist und mit Klemmstücken, die durch Federkraft auf Höhe des Sockels gegen die Außenwandung des Endes des Kartuschenrohres drücken. The invention relates to a device for expressing a particular pasty mass from a substantially cylindrical cartridge by driving a piston in a cartridge tube in the direction of an outlet opening, with a base on which the outlet opening opposite the end of the cartridge tube can be placed and with clamping pieces , which press by spring force at the level of the base against the outer wall of the end of the cartridge tube.
Eine derartige Kartuschenausdrückvorrichtung ist bekannt aus der EP 1 034847 A2. Das Grundgehäuse, welches einen Vortriebshebel lagert, der gegen einen Handgriff verschwenkt werden kann, um einen am Ende einer Schubstange sitzenden Stempel in das Kartuschenrohr einer Kartusche zu verlagern, um den dort angeordneten Kolben in Richtung einer Austrittsöffnung voranzutreiben, besitzt einen Sockel, auf den das Ende des Kartuschenrohres aufsteckbar ist. Der Sockel wird von einem eine Vielzahl radial einwärts gerichteter Krallen aufweisenden Federring umgeben. Die Krallen des Federrings graben sich in die Außenmantelfläche des Kartuschenrohres auf Höhe des Sockels ein. Es ist ein in Axialrichtung verlagerbarer Löseschieber vorgesehen, um die Krallen aus ihrer Eingriffsstellung zur Außenwandung des Kartuschenrohres zurückzuver- lagern, damit das Kartuschenrohr vom Sockel abgezogen werden kann. Such a cartridge ejecting device is known from EP 1 034847 A2. The basic housing, which supports a propulsion lever which can be pivoted against a handle in order to displace a punch located at the end of a push rod into the cartridge tube of a cartridge, in order to drive the piston arranged there in the direction of an outlet opening, has a base on which the End of the cartridge tube is attachable. The base is surrounded by a plurality of radially inwardly directed claws having spring ring. The claws of the spring ring dig into the outer circumferential surface of the cartridge tube at the level of the base. An axially displaceable release slide is provided to relocate the claws from their engagement position to the outer wall of the cartridge tube, so that the cartridge tube can be pulled off the base.
Eine ähnliche Vorrichtung offenbart die WO 2005/097354. Bei der dort be- schriebenen Spannvorrichtung sitzt am Ende einer in einem Grundkörper verschieblich gelagerten Stange eine Spannbacke in Form eines Stempels, um den Kolben der Kartusche in Richtung der Austrittsöffnung voranzutreiben. Die Schubstange wird mittels eines Schrittschaltgetriebes, welches einen Vortriebshebel und eine Mitnehmerplatte aufweist, in einer Spannrichtung vorverlagert. Nach dem jeweiligen Hub in Spannrichtung wird die Schubstange von einer Rückdrücksperre gegen eine Rückverlagerung in Gegenrichtung gehemmt. Mittels eines Lösehebels kann die Rückdrücksperre aus ihrer Sperrstellung verlagert werden. Um das rückwärtige Ende des Kartuschenrohres am Grundkörper zu halten, sind an der Innenwandung des Kartuschenrohres angreifende Klemmelemente vorgesehen. A similar device is disclosed in WO 2005/097354. In the case of the clamping device described there, a clamping jaw in the form of a punch sits at the end of a rod displaceably mounted in a base body in order to advance the piston of the cartridge in the direction of the outlet opening. The push rod is advanced in a clamping direction by means of a stepping gear, which has a driving lever and a driving plate. After the respective stroke in the clamping direction, the push rod of a Backstop inhibited against reverse displacement in the opposite direction. By means of a release lever, the reverse lock can be shifted from its locked position. In order to hold the rear end of the cartridge tube on the base body, clamping elements acting on the inner wall of the cartridge tube are provided.
Die DE 299 03 910 Ul beschreibt ebenfalls eine Kartuschenausdrückvorrich- tung, bei der das der Austrittsöffnung gegenüberliegende Ende des Kartuschenrohres am Grundkörper befestigt ist. Dies erfolgt hier mittels einer DE 299 03 910 Ul also describes a cartridge ejecting device in which the end of the cartridge tube opposite the outlet opening is fastened to the base body. This is done here by means of a
Klemmschelle. Clamp.
Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Vorrichtung gebrauchsvorteilhaft weiterzubilden. Gelöst wird die Aufgabe durch die in den Ansprüchen angegebene Erfindung. The invention has for its object to further develop the generic device nutzsvorteilhaft. The object is achieved by the invention specified in the claims.
Gemäß einem ersten Aspekt der Erfindung ist vorgesehen, dass die Klemmstücke an zwei sich diametral gegenüberliegenden Stellen am Kartuschenrohr angreifen. Die Fesselung erfolgt somit nur an zwei sich gegenüberliegenden Or- ten. Die Klemmstücke sind an den Enden jeweils eines von einer Feder in eine Klemmstellung beaufschlagten Betätigungshebels angeordnet. Die Betätigungshebel können mehrarmig und insbesondere zweiarmig gestaltet sein. Die beiden Drehachsen der Betätigungshebel verlaufen parallel zueinander. Das Grundgehäuse kann zwei diametral gegenüberliegende Kammern aufweisen, in denen die Betätigungshebel gelagert sind. Zwei Arme eines Betätigungshebels sind so ausgebildet und liegen insbesondere in einer 180°-Gestrecktlage hintereinander, dass sie die Kammer nach außen hin verschließen. Ein Arm des Betätigungshebels bildet einen Betätigungsarm, der zu Verlagerung des According to a first aspect of the invention it is provided that the clamping pieces engage at two diametrically opposite locations on the cartridge tube. The restraint thus takes place only at two opposite locations. The clamping pieces are arranged at the ends of an actuating lever acted upon by a spring in a clamping position. The actuating lever can be designed multiarm and in particular two armed. The two axes of rotation of the actuating lever are parallel to each other. The basic housing may have two diametrically opposed chambers, in which the actuating levers are mounted. Two arms of an actuating lever are formed and are in particular in a 180 ° stretched position one behind the other, that they close the chamber to the outside. An arm of the actuating lever forms an actuating arm, which is responsible for displacement of the
Klemmstücks in Gehäuseeinwärtsrichtung zu verlagern ist. Dies erfolgt gegen die Rückstellkraft einer Druckfeder, die sich am Betätigungsarm und am Boden einer Lageröffnung des Grundgehäuses abstützt. Zum Lösen der Klemmstellung müssen die beiden Betätigungsarme der Betätigungshebel aufeinander zu verlagert werden. Die in einem stumpfen Winkel vom Betätigungsarm abragenden Klemmarme der der Betätigungshebel tragen jeweils von einer Metall- platte ausgebildete Klemmstücke. Die Klemmstücke besitzen sich auf einer Kreisbogenlinie erstreckende Schneiden, die in der Klemmstellung an der Außenwandung des Kartuschenrohres in einer Schrägstellung anliegen. Wird auf die Kartusche ein Zug ausgeübt, so graben sich die Schneiden tiefer in die Außenwandung des Kartuschenrohres. Das Widerlager für die Klemmkraft wird von einer Mantelwandung des Sockels ausgebildet. Dieser besitzt in dem Bereich, in dem das Kartuschenrohr von der Schneide beaufschlagt wird, eine kreisbogenförmige Grundrisslinie. Die Umrisskontur des Sockels ist in diesem Bereich dem Verlauf der Innenwandung des Kartuschenrohres angepasst. Das Kartuschenrohr kann sich durch die sich diametral gegenüberliegenden Clamp is to move in the housing inward direction. This is done against the restoring force of a compression spring, located on the actuating arm and on the ground a bearing opening of the base housing is supported. To release the clamping position, the two actuating arms of the actuating lever must be shifted towards each other. The clamping arms of the actuating levers projecting at an obtuse angle from the actuating arm each carry clamping pieces formed by a metal plate. The clamping pieces have cutting edges extending on a circular arc, which lie in an inclined position in the clamping position on the outer wall of the cartridge tube. If a pull is exerted on the cartridge, the blades dig deeper into the outer wall of the cartridge tube. The abutment for the clamping force is formed by a jacket wall of the base. This has in the area in which the cartridge tube is acted upon by the cutting edge, a circular arc-shaped outline. The outline contour of the base is adapted in this area the course of the inner wall of the cartridge tube. The cartridge tube can be through the diametrically opposite
Klemmstücke zu einer Ovalform verformen, da es ausschließlich von zwei sich diagonal gegenüberliegenden Stellen von den Klemmstücken beaufschlagt wird. Der Sockel wird vorzugsweise von einer Ringstruktur ausgebildet, die an sich gegenüberliegenden Stellen abgeflacht ist. Der Sockel besitzt eine Durchtrittsöffnung, durch die die Schubstange hindurchragt. Auf dem freien Ende der Schubstange sitzt ein Stempel, der den Kolben der Kartusche beaufschlagt. Durch Druck auf den Kolben wird die innerhalb des Kartuschenrohres zwischen Kolben und Austrittsöffnung bevorratete pastöse Masse komprimiert und durch eine von einer Tülle gebildeten Austrittsöffnung herausgepresst. Zum Antrieb der Schubstange ist ein Schrittschaltgetriebe vorgesehen, welches einen Vortriebshebel besitzt, der um ein Drehachse schwenkbar am Grundgehäuse gelagert ist und zur Erzielung einer Pumpbewegung in Richtung auf einen Handgriff verlagerbar ist. Dabei greift ein Antriebsarm des Vortriebshebels an einem Mitnehmer an, bei dem es sich um eine Mitnehmerplatte handeln kann. Diese gerät in eine verkippte Klemmlage zur Schubstange und wird unter Mitnahme der Schubstange gegen die Rückstellkraft einer Rückstellfeder in eine Spannrichtung vorverlagert. Im Grundkörper befindet sich zudem eine von einer Sperrplatte ausgebildete Rückdrücksperre, die sich an einem Ende an einem gehäusefesten Stützanschlag abstützt. An dem gegenüberliegenden Ende wird das Klemmstück von einer Rückstellfeder beaufschlagt und von dieser in einer Klemmstellung auf der Schubstange gehalten. Bei der Vorverlagerung kann die Schubstange durch eine Öffnung der Klemmplatte hindurch gleiten. Um die Rückdrücksperre zu lösen, muss ein Lösehebel verschwenkt werden, der mit einer Betätigungsschulter an dem von der Rückstellfeder beaufschlagten Ende des Klemmstücks angreift, um Letzteres aus der Klemmstellung zu bringen. Deform clamping pieces to an oval shape, since it is acted upon only by two diagonally opposite points of the clamping pieces. The base is preferably formed by a ring structure which is flattened at opposite points. The base has a passage opening through which the push rod protrudes. On the free end of the push rod sits a punch, which acts on the piston of the cartridge. By pressure on the piston stored within the cartridge tube between the piston and outlet opening pasty mass is compressed and pressed out through an outlet opening formed by a spout. To drive the push rod, a stepping gear is provided, which has a propulsion lever, which is mounted pivotably about an axis of rotation on the base housing and to achieve a pumping movement in the direction of a handle is displaced. In this case, a drive arm of the drive lever engages a driver, which may be a driver plate. This gets in a tilted clamping position to the push rod and is taking the push rod against the restoring force of a return spring in a Forward clamping direction. In the main body there is also a formed by a locking plate backpressure, which is supported at one end to a housing-fixed support stop. At the opposite end of the clamping piece is acted upon by a return spring and held by this in a clamping position on the push rod. In the forward displacement, the push rod can slide through an opening in the clamping plate. In order to release the reverse lock, a release lever must be pivoted, which engages with an actuating shoulder on the acted upon by the return spring end of the clamping piece to bring the latter from the clamping position.
Ein zweiter Aspekt der Erfindung betrifft die Weiterbildung der zuvor beschriebenen Rückdrücksperre an einem Spannwerkzeug, insbesondere in Form einer Kartuschenausdrückvorrichtung mit einer am Ende einer in einem A second aspect of the invention relates to the development of the previously described back pressure lock on a clamping tool, in particular in the form of a cartridge ejecting device with one at the end of a in a
Grundkörper verschieblich gelagerten Stange, insbesondere Schubstange angeordneten Spannbacke, insbesondere in Form eines Stempels, die mittels eines Schrittschaltgetriebes in einer Spannrichtung vorverlagerbar ist und mit einer lösbaren Rückdrücksperre zur Hemmung einer Rückverlagerung der Stange in Gegenrichtung. Main body displaceably mounted rod, in particular push rod arranged clamping jaw, in particular in the form of a punch, which is vorverlagerbar by means of a stepping gear in a clamping direction and with a releasable back pressure lock for inhibiting a backward displacement of the rod in the opposite direction.
Zur Lösung der eingangs genannten Aufgabe ist hier vorgesehen, dass die Rückdrücksperre nach einer Vorverlagerung erst nach einer geringfügigen Rückverlagerung in Wirkung tritt. Dies ist insbesondere dann von Vorteil, wenn es sich bei dem Spannwerkzeug um eine Kartuschenausdrückvorrichtung handelt. Der Stempel komprimiert die in der Kartusche bevorratete pastöseTo solve the aforementioned problem is provided here that the non-return after a forward displacement occurs only after a slight shift back into effect. This is particularly advantageous when the clamping tool is a cartridge ejecting device. The stamp compresses the pasty stored in the cartridge
Masse und drückt sie aus der Austrittsöffnung heraus. Wird der oben beschriebene Mitnehmer durch Verminderung einer Antriebskraft am Vortriebshebel entlastet, so bewirkt die Kraft der komprimierten Masse eine geringfügige Rückverlagerung des Stempels bzw. der Schubstange, bevor deren Verlagerung von der Rückdrücksperre gehemmt ist. Hierdurch kann sich die in der Kartu- sehe komprimierte pastöse Masse entspannen, so dass ein Nachtropfen aus der Austrittsöffnung verhindert wird. Das Sperrglied der Rückdrücksperre kann nach der Verlagerung von einem Stützanschlag beabstandet sein. Erst nach Beendigung der Vorverlagerung kann durch Druck auf die Spannbacke, also den Stempel die Stange bis in eine Anlagestellung des Sperrgliedes an den Stützanschlag zurückverlagert werden. Dem Stützanschlag, an dem sich das Sperrglied zur Entfaltung seiner Hemmstellung abstützt, kann in Vorverlagerungsrichtung ein Bewegungsendanschlag benachbart sein. Gegen diesen Bewegungsendanschlag kann das Sperrglied anschlagen, wenn es bei der Vorverlagerung der Schubstange in Spannrichtung um eine geringe Wegstrecke mitgeschleppt wird. Dies kann gleichzeitig mit einer Kompression der Rückstellfeder erfolgen. Es ist aber auch vorgesehen, dass das Sperrglied im Bereich des Stützanschlages bzw. des Bewegungsendanschlages in Spannrichtung von einer Vortriebsfeder beaufschlagt wird und dass diese Vortriebsfeder eine größere Federkraft entwi- ekelt als die Rückstellfeder, so dass das Sperrglied permanent am Bewegungsendanschlag anliegt. Auch bei dieser Variante ist es möglich, nach Beendigung des Vortriebes durch Betätigung des Vortriebshebels den Stempel bzw. die Schubstange geringfügig zurückzuverlagern. Mit einem bezogen auf die Vortriebsrichtung der Stange vor dem Handgriff bzw. dem Vortriebshebel sitzen- den Lösehebel kann ein Randabschnitt des Sperrgliedes in die Lösestellung beaufschlagt werden, welcher Randabschnitt dem Randabschnitt gegenüberliegt, der sich mit Bewegungsspiel zwischen Bewegungsendanschlag und Stützanschlag befindet. Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand beigefügter Zeichnungen erläutert. Es zeigen: Mass and push it out of the outlet. If the driver described above relieved by reducing a driving force on the propulsion lever, the force of the compressed mass causes a slight return displacement of the punch or the push rod, before their displacement is inhibited by the Rückdrücksperre. This may result in the see compressed pasty mass relax, so that a dripping from the outlet opening is prevented. The locking member of the reverse lock may be spaced after the displacement of a support stop. Only after completion of the forward displacement can be shifted back to an abutment position of the locking member to the support stop by pressure on the jaw, so the punch the rod. The support stop, on which the locking member is supported for the development of its inhibition position, may be adjacent to a movement end stop in the forward displacement direction. Against this Bewegungsendanschlag the locking member can strike when it is dragged in the forward displacement of the push rod in the clamping direction by a small distance. This can be done simultaneously with a compression of the return spring. But it is also envisaged that the locking member is acted upon in the clamping direction of a propulsion spring in the region of the support stop and the Bewegungsendanschlages and that this propulsion spring a larger spring force de- duces than the return spring, so that the locking member rests permanently on Bewegungsendanschlag. Also in this variant, it is possible to shift the punch or the push rod slightly after completion of the propulsion by pressing the propulsion lever. With a relative to the advancing direction of the rod in front of the handle or the propulsion lever sitting- release lever, an edge portion of the locking member can be acted upon in the release position, which edge portion is opposite to the edge portion, which is located with movement play between movement end stop and support stop. An embodiment of the invention will be explained below with reference to accompanying drawings. Show it:
Fig. 1 in perspektivischer Darstellung ein Ausführungsbeispiel einer Kartu- schenausdrückvorrichtung; Fig. 2 einen Schnitt gemäß der Schnittlinie II - II in Figur 1; 1 shows a perspective view of an embodiment of a cartridge ejection device; 2 shows a section along the section line II - II in Figure 1;
Fig. 3 eine Explosionsdarstellung der wesentlichen Elemente der Kartuschen- ausdrückvorrichtung; 3 shows an exploded view of the essential elements of the cartridge expressing device;
Fig. 4 eine weitere perspektivische Darstellung der Kartuschenausdrückvor- richtung im Bereich einer Einstecköffnung 38 für ein Kartuschenrohr 1 einer Kartusche; Fig. 5 einen Schnitt gemäß der Linie V - V in Fig. 4, wobei das Ende eines Kartuschenrohres 1 in einer Klemmstellung gehalten ist; 4 shows a further perspective view of the cartridge ejecting device in the region of an insertion opening 38 for a cartridge tube 1 of a cartridge; 5 shows a section along the line V - V in Figure 4, wherein the end of a cartridge tube 1 is held in a clamping position.
Fig. 5a eine Darstellung gemäß Fig. 5, wobei das Kartuschenrohr freigegeben worden ist; Fig. 5a is a view according to Figure 5, wherein the cartridge tube has been released.
Fig. 6 einen Schnitt gemäß der Linie VI - VI in Fig. 5a; 6 shows a section along the line VI - VI in Fig. 5a;
Fig. 7 eine Darstellung gemäß Fig. 2 mit in Vortriebsrichtung betätigtem Vortriebshebel 8; 7 shows an illustration according to FIG. 2 with the propulsion lever 8 actuated in the advancing direction; FIG.
Fig. 8 eine Folgedarstellung gemäß Fig. 7, wobei der Stempel 13 bzw. dieFig. 8 is a sequential view of FIG. 7, wherein the punch 13 and the
Schubstange 12 geringfügig bis in eine Hemmstellung zurückverlagert worden ist; Fig. 9 eine Darstellung gemäß Fig. 2 mit in Freigabestellung gebrachter Rückdrücksperre und Push rod 12 has been slightly shifted back to a stop position; Fig. 9 is a representation according to FIG. 2 with brought in release position backpressure and
Fig. 10 ein zweites Ausführungsbeispiel. Das in den Figuren 1 bis 9 dargestellte Ausführungsbeispiel besitzt einen aus Kunststoff gefertigten Grundkörper 6, der an seinem vorderen Ende eine Einstecköffnung 38 zum Einstecken eines Kartuschenrohres 1 einer mit einer pastösen Masse gefüllten Kartusche aufweist. Innerhalb des Kartuschenrohres 1 befindet sich ein Kolben 2. An der dem Kolben 2 gegenüberliegenden Seite bil- det die Kartusche mit einer Tülle 5 eine Austrittsöffnung 4 aus, durch welche durch Druck auf den Kolben 2 eine innerhalb der Kartusche bevorratete pastöse Masse 3 herausgepresst werden kann. 10 shows a second embodiment. The embodiment illustrated in FIGS. 1 to 9 has one Plastic-made base body 6, which has at its front end an insertion opening 38 for insertion of a cartridge tube 1 of a filled with a pasty mass cartridge. Inside the cartridge tube 1 there is a piston 2. On the side opposite the piston 2, the cartridge forms a discharge opening 4 with a nozzle 5, through which a pasty mass 3 stored inside the cartridge can be pressed out by pressure on the piston 2 ,
Zur Aufnahme des Endes I1 des Kartuschenrohres 1 ist im Bereich des Bodens der Einstecköffnung 38 ein ringförmiger Sockel 21 vorgesehen. Die Wandung der Einstecköffnung 38 wird von einem Innenzylinder ausgebildet. Zwei sich diagonal gegenüberliegende Bereiche des Sockels 21 werden von einer auf einer Kreisbogenkonturlinie verlaufenden Stege gebildet, die radial einwärts verlaufende Stützrippen 26 aufweisen. Der Verlauf der Wandung 22 des Sockels 21 entspricht dort der Innenkontur des Kartuschenrohres 1. An zwei sich diagonal gegenüberliegenden Seiten, an denen keine Klemmmittel vorgesehen sind, besitzt der Sockel 21 Abflachungen 21'. For receiving the end I 1 of the cartridge tube 1, an annular base 21 is provided in the region of the bottom of the insertion opening 38. The wall of the insertion opening 38 is formed by an inner cylinder. Two diagonally opposite areas of the base 21 are formed by a running on a circular arc contour line webs having radially inwardly extending support ribs 26. The course of the wall 22 of the base 21 corresponds there to the inner contour of the cartridge tube 1. On two diagonally opposite sides, on which no clamping means are provided, the base 21 has flats 21 '.
Im Zentrum des Sockels 21 befindet sich eine Führungsöffnung 23, in welcher eine Schubstange 12 gelagert ist. Diese trägt an ihrem vorderen, in die Einstecköffnung 38 hineinragenden Ende einen Stempel 13, mit dem der Kolben 2 in einer Spannrichtung beaufschlagt werden kann. Mit einem weiter unten noch beschreibenden Schrittschaltgetriebe kann die Schubstange 12 schrittweise in Spannrichtung verlagert werden. Sie ist dabei mit einer ebenfalls weiter unten noch beschriebenen Rückdrücksperre an einer Rückverlagerung gehemmt. In the center of the base 21 is a guide opening 23, in which a push rod 12 is mounted. This carries at its front, projecting into the insertion opening 38 a punch 13, with which the piston 2 can be acted upon in a clamping direction. With a below-described stepping gear, the push rod 12 can be gradually shifted in the clamping direction. It is inhibited with a Rückdrücksperre also described below on a return displacement.
Bezogen auf die Schubstange 12 bildet das Gehäuse 6 zwei sich diametral gegenüberliegende Kammern 36 aus, die der Einstecköffnung 38 benachbart liegen. Die Kammern erstrecken sich parallel zur Einstecköffnung 38. In jeder der beiden Kammern 36 ist ein Betätigungshebel 27 gelagert. Die beiden Drehach- sen 33, um welche jeder Betätigungshebel 27 drehbar ist, verlaufen parallel zueinander. Jeder Betätigungshebel 27 bildet einen in Öffnungsrichtung der Einstecköffnung 38 ragenden Betätigungsarm 28 aus. Die Betätigungsarme 28 können aufeinander zu verlagert werden. Dies erfolgt gegen die Rückstellkraft ei- ner Druckfeder 29, die sich auf dem Boden einer topfförmigen Öffnung 34 abstützt. Das andere Ende der Druckfeder 29 beaufschlagt die Unterseite des Betätigungsarmes 28. In einer 180°-Erstreckungsrichtung zum Betätigungsarm 28 weist der Betätigungshebel 27 einen Verschlussarm 37 auf. Mit dem Betätigungsarm 28 und dem Verschlussarm 37 ist die Kammer 36 nach außen ge- schlössen. Based on the push rod 12, the housing 6 forms two diametrically opposite chambers 36 which are adjacent to the insertion opening 38. The chambers extend parallel to the insertion opening 38. In each of the two chambers 36, an actuating lever 27 is mounted. The two rotary axis sen 33, by which each actuating lever 27 is rotatable, parallel to each other. Each actuating lever 27 forms a projecting in the opening direction of the insertion 38 actuating arm 28. The actuating arms 28 can be displaced towards each other. This takes place against the restoring force of a compression spring 29, which is supported on the bottom of a cup-shaped opening 34. The other end of the compression spring 29 acts on the underside of the actuating arm 28. In a 180 ° extension direction to the actuating arm 28, the actuating lever 27 has a locking arm 37. With the actuating arm 28 and the locking arm 37, the chamber 36 is closed to the outside.
Von der Rückseite des Hebelpaares 28, 37 ragt ein Klemmarm 30 ab. Am Ende dieses Klemmarms sitzt ein aus einer Metallplatte gefertigtes Klemmstück 31. Die Metallplatte erstreckt sich schräg zur Verlagerungsrichtung der Schubstan- ge 12 und besitzt an ihrem freien Ende eine auf einer Bogenlinie verlaufendeFrom the back of the lever pair 28, 37 a clamping arm 30 protrudes. At the end of this clamping arm sits a clamping piece 31 made of a metal plate. The metal plate extends obliquely to the direction of displacement of the push rod 12 and has at its free end a line running on a curved line
Schneide 32. Die Druckfeder 29 übt eine Kraft aus, die die Schneide 32 schräg in die Außenwandung des Kartuschenrohres 1 beaufschlagt. Wegen der Schrägstellung des die Schneide 32 aufweisenden Klemmstücks 31 gräbt sich die Schneide bei einem Zug auf die Kartusche, was durch eine Vorverlagerung des Stempels 13 erfolgt, in die Außenwandung des Kartuschenrohres 1 ein. Cutting edge 32. The compression spring 29 exerts a force which acts obliquely on the cutting edge 32 in the outer wall of the cartridge tube 1. Because of the inclination of the cutting edge 32 having the clamping piece 31, the blade digs in a train on the cartridge, which takes place by a forward displacement of the punch 13, in the outer wall of the cartridge tube 1 a.
Das Lösen der Klemmverbindung, mit der das Kartuschenrohr 1 am Grundkörper 6 gehalten ist, ist in einer Einhandbetätigung möglich. Mit Daumen und Zeigefinger können die beiden Betätigungsarme 28 der Betätigungshebel 27 aufeinander zu verlagert werden. Mit der anderen Hand kann eine geleerte Kartusche aus der Einstecköffnung 38 herausgezogen werden. The release of the clamping connection, with which the cartridge tube 1 is held on the base body 6, is possible in a one-hand operation. With thumb and forefinger, the two actuating arms 28 of the actuating lever 27 can be displaced toward each other. With the other hand, an emptied cartridge can be pulled out of the insertion opening 38.
Zum Einstecken einer neuen Kartusche braucht der Betätigungsarm 28 nicht betätigt werden. Wegen der Schrägstellung des Klemmstückes 31 wird es beim Einstecken einer neuen Kartusche in die Einstecköffnung 38 vom Stirnrand des Endes I1 des Kartuschenrohres 1 verlagert. For inserting a new cartridge, the actuating arm 28 does not need to be actuated. Because of the inclination of the clamping piece 31, it is at Inserting a new cartridge into the insertion opening 38 is displaced from the end edge of the end I 1 of the cartridge tube 1.
Das oben bereits erwähnte Schrittschaltgetriebe besteht aus einem Vortriebshe- bei 8, der um eine gehäusefeste Achse 24 am Grundgehäuse 6 gelagert ist. Der Vortriebshebel 8 kann von den Fingern einer einen Handgriff 7 umfassenden Hand in Richtung auf den Handgriff 7 verschwenkt werden. Dabei bewegt sich ein Antriebsarm des Vortriebshebels 8 in Gegenrichtung und beaufschlagt den Randbereich eines in einer Lagerkammer 39 gelagerten Mitnehmers 10. Bei dem Mitnehmer 10 handelt es sich um ein Metallplättchen mit einer scharfkantigen Öffnung 10', welche von der Schubstange 12 durchgriffen ist. Eine ebenfalls von der Schubstange 12 durchgriffene Rückstellfeder 11 beaufschlagt den Mitnehmer 10 und hält ihn in einer Grundstellung, in welcher die Schubstange 12 frei durch die Öffnung 10' des Mitnehmers 10 gleiten kann. Wird der Vortriebshebel 8 verschwenkt, so bewirkt der Angriff des Antriebsarmes 9 am Rand des Mitnehmers 10 eine Verkippung des Mitnehmers 10, so dass die scharfen Kanten der Öffnung 10 in die Außenwandung der Schubstange 12 eingreifen. Die Schubstange 12 ist dadurch mit dem Mitnehmer 10 bewegungsgekoppelt und wird vom Mitnehmer 10 gegen die Rückstellkraft der Rückstellfeder 11 in Spannrichtung mitgeschleppt. Der am Ende der Schubstange 12 sitzende Stempel 13 beaufschlagt dabei den Kolben 2 der Kartusche. Bei dieser Art der Vorverlagerung der Schubstange 12, wie sie in der Figur 7 dargestellt ist, wird ein ebenfalls von einem Stahlblech ausgebildetes Sperrglied 16 mit verlagert. Dabei wird eine Rückstellfeder 17, die einen Randabschnitt des Sperrgliedes 16 beauf- schlagt, komprimiert. Bei der Vorverlagerung stützt sich ein Randabschnitt des Sperrgliedes 16 an einem Bewegungsendanschlag 20 des Grundkörpers 6 ab, der der Seite des Sperr gliedes 16 zugeordnet ist, die bezogen auf die Öffnung 16' der Rückstellfeder 17 abgewandt ist. Wird - wie in der Figur 8 dargestellt - der Vortriebshebel 8 entlastet, so dass sich der Mitnehmer 10 geringfügig in Gegenrichtung verlagern kann, so kann sich die pastöse Masse 3 innerhalb der Kartusche entspannen. Dies geht einher mit einer geringfügigen Rückverlagerung des Kolbens 2 bzw. des Stempels 13. Der Rückverlagerungsweg ist begrenzt durch den Stützanschlag 19, der mit Abstand dem Bewegungsendanschlag 20 gegenüberliegt. Zwischen Stützanschlag 19 und Bewegungsendanschlag 20 befindet sich ein Abschnitt der Sperrplatte 16 mit Bewegungsspiel. Wird die Sperrplatte 16 bis in ihre Anschlagstellung an den Stützanschlag 19 verlagert, wirkt auf die Sperrplatte 16 ein Drehmoment, welches insbesondere von der Rückstellfeder 17, aber auch von einer auf die Schubstange 12 wirkenden Kraft aufrecht erhalten wird. Da sich die Schubstange 12 in Klemmstellung in der Öffnung 16' befindet, kann sie nicht entgegen der Vorschubrichtung ver- lagert werden. The above-mentioned stepping gear consists of a Vortriebshe- at 8, which is mounted to a housing-fixed axis 24 on the base housing 6. The propulsion lever 8 can be pivoted by the fingers of a hand 7 comprehensive hand in the direction of the handle 7. In this case, a drive arm of the drive lever 8 moves in the opposite direction and acts on the edge region of a carrier mounted in a bearing chamber 39 10. The driver 10 is a metal plate with a sharp-edged opening 10 ', which is penetrated by the push rod 12. A likewise restrained by the push rod 12 return spring 11 acts on the driver 10 and holds it in a normal position in which the push rod 12 can slide freely through the opening 10 'of the driver 10. If the propulsion lever 8 is pivoted, then the attack of the drive arm 9 at the edge of the driver 10 causes a tilting of the driver 10, so that the sharp edges of the opening 10 engage in the outer wall of the push rod 12. The push rod 12 is thereby coupled in motion with the driver 10 and is entrained by the driver 10 against the restoring force of the return spring 11 in the clamping direction. The seated at the end of the push rod 12 punch 13 acts on the piston 2 of the cartridge. In this type of forward displacement of the push rod 12, as shown in Figure 7, a likewise formed by a steel sheet locking member 16 is displaced with. In this case, a restoring spring 17, which acts on an edge section of the locking member 16, is compressed. In the forward displacement, an edge portion of the locking member 16 is supported on a movement end stop 20 of the base body 6, which is assigned to the side of the locking member 16, which faces away from the opening 16 'of the return spring 17. If - as shown in Figure 8 - the propulsion lever 8 relieved, so that the driver 10 can shift slightly in the opposite direction, so the pasty mass 3 can relax within the cartridge. This is accompanied by a slight return displacement of the piston 2 and the punch 13. The Rückverlagerungsweg is limited by the support stop 19, which is opposite to the Bewegungsendanschlag 20 at a distance. Between the support stop 19 and movement end stop 20 is a portion of the locking plate 16 with movement play. If the locking plate 16 is displaced to its stop position on the support stop 19, acts on the locking plate 16, a torque which is maintained in particular by the return spring 17, but also by a force acting on the push rod 12 force. Since the push rod 12 is in the clamping position in the opening 16 ', it can not be displaced counter to the feed direction.
Diese rückdrückgesperrte Stellung ist in der Figur 8 dargestellt. Sie kann durch Verschwenken eines Lösehebels 14 bis in die in Figur 9 dargestellte Stellung aufgehoben werden. Der Lösehebel 14 wird dabei um seine Schwenkachse 25 geschwenkt, so dass der von der Rückstellfeder 17 beaufschlagte Randabschnitt des Sperrgliedes 16 von einer Betätigungsschulter 15 verlagert wird. Dabei wird die Rückstellfeder 17 gespannt und das Sperrglied 16 um den Stützanschlag 19 verschwenkt, bis die Schubstange 12 frei durch die Öffnung 16' hindurchgleiten kann. This non-return position is shown in FIG. It can be canceled by pivoting a release lever 14 into the position shown in Figure 9. The release lever 14 is thereby pivoted about its pivot axis 25, so that the acted upon by the return spring 17 edge portion of the locking member 16 is displaced by an actuating shoulder 15. In this case, the return spring 17 is tensioned and the locking member 16 is pivoted about the support stop 19 until the push rod 12 can pass freely through the opening 16 '.
Im Bereich des Randabschnittes des Sperrgliedes 16, der mit Bewegungsspiel zwischen Stützanschlag 19 und Bewegungsendanschlag 20 liegt, wirkt eine Vortriebsfeder 18 auf das Sperrglied 16. Die Wirkrichtung der Vortriebsfeder 18 ist der Wirkrichtung der Rückstellfeder 17 entgegengerichtet und beaufschlagt das Sperrglied 16 in Richtung auf den Bewegungsendanschlag 20. Ist die Feder- kraft der Vortriebsfeder 18 größer als die Federkraft der Rückstellfeder 17, so liegt das Sperrglied 16 permanent am Bewegungsendanschlag 20 an. Durch Ausüben eines Drucks auf die Schubstange 12 entgegen der Spannrichtung kann die Schubstange also um das Maß des Bewegungsspieles entgegen der Spannrichtung soweit rückverlagert werden, bis das Sperrglied 16 am Stützanschlag 19 anschlägt. In the region of the edge portion of the locking member 16, which lies with movement play between the support stop 19 and movement end stop 20, a propelling spring 18 acts on the locking member 16. The effective direction of the advancing spring 18 is opposite to the direction of action of the return spring 17 and acts on the locking member 16 in the direction of the movement end stop 20. Is the spring by virtue of the advancing spring 18 being greater than the spring force of the restoring spring 17, the locking member 16 is permanently in contact with the movement end stop 20. By exerting a pressure on the push rod 12 against the clamping direction, the push rod can therefore be shifted back as far as the amount of movement against the tension direction until the locking member 16 strikes the support stop 19.
Ist die Rückstellfeder 17 stärker als die Vortriebsfeder 18, so wird nach Beendigung eines Vortriebshubes durch den Vortriebshebel 8 die Schubstange 12 nicht in der Endstellung des Hubes gehalten. Die Schubstange wird vielmehr durch die Kraft der Rückstellfeder 17 aktiv in die rückstellgehemmte Stellung rückverlagert. If the restoring spring 17 is stronger than the propulsion spring 18, the push rod 12 is not held in the end position of the stroke after completion of a propulsion stroke by the propulsion lever 8. Rather, the push rod is actively shifted back into the restocked position by the force of the restoring spring 17.
Bei dem in der Figur 10 dargestellten Ausführungsbeispiel wird der Stempel 13 von einer nicht dargestellten von einem elektrischen Antrieb 40 verlagerbaren Teleskop-Schubeinrichtung verlagert. Hierzu sind innerhalb des Grundkörpers 6 Batterien und ein von einem Antriebsmotor drehangetriebenes Getriebe vorgesehen. Der Motor beginnt seine Drehung, die mit einer Linearverlagerung des nicht dargestellten Stempels 13 einhergeht, wenn ein Taster 41, der in einer einem Handgriff 7 zugeordneten Grifföffnung angeordnet ist, betätigt wird. In the exemplary embodiment illustrated in FIG. 10, the punch 13 is displaced by a telescopic push device which is displaceable by an electric drive 40, not shown. For this purpose, 6 batteries and a rotationally driven by a drive motor gear are provided within the body. The motor starts its rotation, which is accompanied by a linear displacement of the plunger 13, not shown, when a button 41, which is arranged in a handle 7 associated with a handle opening, is actuated.
Im Grundgehäuse 6 befindet sich auch eine Füllstandsanzeige, die von einem in einem Schlitz 46 des Gehäuses 6 geführten Zeiger 45 gebildet ist. Entlang des Schlitzes 46 ist eine Skala 44 vorgesehen. In the base housing 6 is also a level indicator, which is formed by a guided in a slot 46 of the housing 6 pointer 45. Along the slot 46, a scale 44 is provided.
Die Kartusche wird von einer Klemmvorrichtung gehalten, die derjenigen entspricht, die in den Figuren 1 bis 9 an einer handbetriebenen Ausdrückvorrichtung vorgesehen ist und die weiter oben im Detail beschrieben worden ist. Alle offenbarten Merkmale sind (für sich) erfindungswesentlich. In die Offenbarung der Anmeldung wird hiermit auch der Offenbarungsinhalt der zugehörigen/beigefügten Prioritätsunterlagen (Abschrift der Voranmeldung) vollinhaltlich mit einbezogen, auch zu dem Zweck, Merkmale dieser Unterlagen in Ansprüche vorliegender Anmeldung mit aufzunehmen. Die Unteransprüche charakterisieren in ihrer fakultativ nebengeordneten Fassung eigenständige erfinderische Weiterbildung des Standes der Technik, insbesondere um auf Basis dieser Ansprüche Teilanmeldungen vorzunehmen. The cartridge is held by a clamping device similar to that provided in FIGS. 1 to 9 on a hand-operated squeezing device and which has been described in detail above. All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications.

Claims

ANSPRÜCHE
1. Vorrichtung zum Ausdrücken einer insbesondere pastösen Masse aus einer im wesentlichen zylindrischen Kartusche durch Vorantreiben eines Kolbens (2) in einem Kartuschenrohr (1) in Richtung auf eine Austrittsöffnung (4), mit einem Sockel (21), auf dem das der Austrittsöffnung gegenüberliegende Ende (11) des Kartuschenrohres (1) aufsetzbar ist und mit Klemmstücken (31), die durch Federkraft (29) auf Höhe des Sockels (21) gegen die Außenwandung des Endes (I1) des Kartuschenrohres (1) drü- cken, dadurch gekennzeichnet, dass die Klemmstücke (31) an zwei sich diagonal gegenüberliegenden Stellen am Kartuschenrohr angreifen und an den Enden von einer Feder (29) in eine Klemmstellung beaufschlagten Betätigungshebeln (27) sitzen. 1. A device for expressing a particular pasty mass from a substantially cylindrical cartridge by propelling a piston (2) in a cartridge tube (1) towards an outlet opening (4), with a base (21) on which the outlet opening opposite End (11) of the cartridge tube (1) can be placed and with clamping pieces (31) by spring force (29) at the level of the base (21) against the outer wall of the end (I 1 ) of the cartridge tube (1) squeeze by characterized in that the clamping pieces (31) engage at two diagonally opposite points on the cartridge tube and at the ends by a spring (29) acted upon in a clamping position operating levers (27) sit.
2. Vorrichtung nach Anspruch 1 oder insbesondere danach, dadurch gekennzeichnet, dass die beiden Betätigungshebel (27) um parallel zueinander verlaufende Drehachsen (33) drehbar in einer Kammer (36) des Grundkörpers (6) gelagert sind. 2. Apparatus according to claim 1 or in particular according thereto, characterized in that the two actuating levers (27) about mutually parallel axes of rotation (33) are rotatably mounted in a chamber (36) of the base body (6).
3. Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass der Betätigungshebel (27) einen gehäuseeinwärts verschwenkbaren Betätigungsarm (28) aufweist, der sich gegen eine in einem Aufnahmetopf (34) der Kammer (36) gelagerte Druckfeder (29) abstützt. 3. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the actuating lever (27) has a Gehäuseeinwärts pivotable actuating arm (28) against a in a receiving pot (34) of the chamber (36) mounted compression spring ( 29) is supported.
4. Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass der Betätigungshebel (27) einen Klemmarm (30) aufweist, der an seinem Ende ein von einer Metallplatte gebildetes Klemmstück (31) trägt, welches eine bo- genförmige Schneide (32) aufweist, welche schräg gegen die Verlage- rungsrichtung des Stempels (13) gerichtet an der Außenwandung des Kartuschenrohres (1) anliegt. 4. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the actuating lever (27) has a clamping arm (30) which carries at its end a clamping piece (31) formed by a metal plate which forms a bow-shaped Cutting edge (32), which obliquely against the publishers direction of the punch (13) directed against the outer wall of the cartridge tube (1).
5. Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass die Kammer5. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the chamber
(36) in der Klemmstellung des Klemmstücks (31) von zwei Armen (28, 37) des Betätigungshebels (27) verschlossen ist. (36) in the clamping position of the clamping piece (31) by two arms (28, 37) of the actuating lever (27) is closed.
6. Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass der Sockel (21) im Bereich, in dem die Schneide (32) der Klemmstücke (31) gegen die Außenwandung des Kartuschenrohres (1) auf einer kreisbogenförmigen Umrisskontur verläuft, gegen welche die Innenwandung des Kartuschenrohres (1) durch die Federkraft der Druckfeder (29) beaufschlagt wird. 6. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the base (21) in the region in which the cutting edge (32) of the clamping pieces (31) against the outer wall of the cartridge tube (1) on an arcuate outline contour runs, against which the inner wall of the cartridge tube (1) by the spring force of the compression spring (29) is acted upon.
7. Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass der Sockel (21) in zwei sich gegenüberliegenden, nicht von der Schneide (32) beaufschlagten Bereichen (21') abgeflacht ist. 7. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the base (21) is flattened in two opposite, not by the cutting edge (32) acted upon areas (21 ').
8. Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass der Sockel (21) von einer Stabilisierungsrippen (26) aufweisenden Ringstruktur ausgebildet wird. 8. Device according to one or more of the preceding claims or in particular according thereto, characterized in that the base (21) by a stabilizing ribs (26) having ring structure is formed.
9. Spannwerkzeug insbesondere in Form einer Vorrichtung gemäß einem oder mehreren der vorhergehenden Ansprüche mit einer am Ende einer in einem Grundkörper (6) verschieblich gelagerten Stange, insbesondere Schubstange (12) angeordneten Spannbacke, insbesondere in Form eines Stempels (13), die mittels eines Schrittschaltgetriebes (8, 9, 10, 11) in einer Spannrichtung vorverlagerbar ist und mit einer lösbaren Rückdrücksperre (14, 15, 16, 17, 18, 19) zur Hemmung einer Rückverlagerung der Stange (12) in Gegenrichtung, dadurch gekennzeichnet, dass die Rückdrücksperre (14 bis 19) nach einer Vorverlagerung erst nach einer geringfügigen Rückverlagerung in Wirkung tritt. 9. clamping tool, in particular in the form of a device according to one or more of the preceding claims with a at the end of a base body (6) slidably mounted rod, in particular push rod (12) arranged clamping jaw, in particular in the form of a punch (13) by means of a Stepping gear (8, 9, 10, 11) in one Clamping direction is vorverlagerbar and with a releasable Rückdrücksperre (14, 15, 16, 17, 18, 19) for inhibiting a backward displacement of the rod (12) in the opposite direction, characterized in that the Rückdrücksperre (14 to 19) after a forward displacement after a slight shift back into effect.
10. Spannwerkzeug nach Anspruch 9 oder insbesondere danach, dadurch gekennzeichnet, dass ein Sperrglied (16) der Rückdrücksperre (14 bis 19) nach der Vorverlagerung von einem Stützanschlag (19) beabstandet ist und nach Beendigung der Vorverlagerung durch Druck auf die Spannbacke, insbesondere den Stempel (13) oder durch die Kraft einer Rückstellfeder (17) bis in eine Anlagestellung zum Stützanschlag (19) zurückverla- gerbar ist. 10. Clamping tool according to claim 9 or in particular according thereto, characterized in that a locking member (16) of the back pressure lock (14 to 19) after the forward displacement of a support stop (19) is spaced and after completion of the forward displacement by pressure on the clamping jaw, in particular the Stamp (13) or by the force of a return spring (17) back into a contact position to the support stop (19) zurückver is rerable.
11. Spannwerkzeug nach einem oder mehreren der Ansprüche 9 bis 10 oder insbesondere danach, gekennzeichnet durch einen vom Stützanschlag (19) beabstandeten Bewegungsendanschlag (20), gegen welchen das Sperrglied (16) bei der Vorverlagerung der Stange (12) anschlägt. 11. Clamping tool according to one or more of claims 9 to 10 or in particular according thereto, characterized by a by the support stop (19) spaced movement end stop (20) against which the locking member (16) abuts in the forward displacement of the rod (12).
12. Spannwerkzeug nach einem oder mehreren der Ansprüche 9 bis 11 oder insbesondere danach, dadurch gekennzeichnet, dass das Sperrglied (16) eine Klemmplatte mit einer Öffnung (161) ist, durch welche die Stange (12) geführt ist. 12. Clamping tool according to one or more of claims 9 to 11 or in particular according thereto, characterized in that the locking member (16) is a clamping plate having an opening (16 1 ) through which the rod (12) is guided.
13. Spannwerkzeug nach einem oder mehreren der Ansprüche 9 bis 12 oder insbesondere danach, dadurch gekennzeichnet, dass das Sperrglied (16) von einer Rückstellfeder (17) in einer Klemmstellung zur Stange (12) gehalten wird. 13. Clamping tool according to one or more of claims 9 to 12 or in particular according thereto, characterized in that the locking member (16) by a return spring (17) in a clamping position to the rod (12) is held.
14. Spannwerkzeug nach einem oder mehreren der Ansprüche 9 bis 13 oder insbesondere danach, dadurch gekennzeichnet, dass das Sperrglied (16) von einer Vortriebsfeder (18) in Vorverlagerungsrichtung beaufschlagt wird, mit welcher das Sperrglied (16) gegen den Bewegungsendanschlag (20) beaufschlagt wird. 14. Clamping tool according to one or more of claims 9 to 13 or in particular according thereto, characterized in that the locking member (16) by a driving spring (18) is acted upon in Vorverlagerungsrichtung, with which the locking member (16) against the Bewegungsendanschlag (20) acted upon becomes.
15. Spannwerkzeug nach einem oder mehreren der Ansprüche 9 bis 14 oder insbesondere danach, gekennzeichnet durch einen Lösehebel (14) zum Lösen der Rückdrücksperre (14 bis 19). 15. Clamping tool according to one or more of claims 9 to 14 or in particular according thereto, characterized by a release lever (14) for releasing the back pressure lock (14 to 19).
16. Spannwerkzeug nach einem oder mehreren der Ansprüche 9 bis 15 oder insbesondere danach, dadurch gekennzeichnet, dass die Rückstellfeder16. Clamping tool according to one or more of claims 9 to 15 or in particular according thereto, characterized in that the return spring
(17) an dem Ende der Sperrplatte (16) angreift, an dem auch eine Betätigungsschulter (15) des Lösehebels (14) angreift und im Bereich des gegen- überliegenden Endes der Sperrplatte (16), welches mit dem Stützanschlag und dem Bewegungsendanschlag (20) zusammenwirkt, die Vortriebsfeder(17) at the end of the locking plate (16) engages, which also engages an actuating shoulder (15) of the release lever (14) and in the region of the opposite end of the locking plate (16), which with the support stop and the end stop movement (20 ) cooperates, the propulsion spring
(18) angreift. (18) attacks.
EP10722371.1A 2009-06-24 2010-06-09 Clamping tool in the form of a cartridge discharging device Active EP2445652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009026025A DE102009026025A1 (en) 2009-06-24 2009-06-24 Clamping tool in the form of a cartridge ejection device
PCT/EP2010/058043 WO2011006712A1 (en) 2009-06-24 2010-06-09 Clamping tool in the form of a cartridge discharging device

Publications (2)

Publication Number Publication Date
EP2445652A1 true EP2445652A1 (en) 2012-05-02
EP2445652B1 EP2445652B1 (en) 2017-08-02

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Application Number Title Priority Date Filing Date
EP10722371.1A Active EP2445652B1 (en) 2009-06-24 2010-06-09 Clamping tool in the form of a cartridge discharging device

Country Status (3)

Country Link
EP (1) EP2445652B1 (en)
DE (1) DE102009026025A1 (en)
WO (1) WO2011006712A1 (en)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
DE102011004971A1 (en) * 2011-03-02 2012-09-06 Hilti Aktiengesellschaft dispenser to
DE102012201295A1 (en) * 2012-01-31 2013-08-01 Hilti Aktiengesellschaft dispenser to
DE102014116514A1 (en) 2014-11-12 2016-05-12 Wolfcraft Gmbh Clamping device, in particular in the form of a cartridge ejection device

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Publication number Priority date Publication date Assignee Title
DE29904071U1 (en) 1999-03-05 1999-06-17 Schneider Friedhelm Cartridge press with a cartridge holder
DE29903910U1 (en) 1999-03-05 1999-06-10 Schneider Friedhelm Cartridge press with a cartridge holder
CN101524566B (en) * 1999-11-24 2017-04-12 拜耳医药保健有限责任公司 Front loading medical injector, syringe, syringe interface, and lunger piston assembly for an injector
US6929619B2 (en) * 2002-08-02 2005-08-16 Liebel-Flarshiem Company Injector
US8118196B2 (en) 2004-04-08 2012-02-21 Ray Technology Group B.V. Cartridge pistol with a cartridge holder
US20100042054A1 (en) * 2006-11-17 2010-02-18 Novo Nordisk A/S Medical Delivery System Comprising a Coding Mechanism Between Dosing Assembly and Medicament Container

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See references of WO2011006712A1 *

Also Published As

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EP2445652B1 (en) 2017-08-02
DE102009026025A1 (en) 2010-12-30

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