EP0371278B1 - Cartridge for plastic masses - Google Patents
Cartridge for plastic masses Download PDFInfo
- Publication number
- EP0371278B1 EP0371278B1 EP89120409A EP89120409A EP0371278B1 EP 0371278 B1 EP0371278 B1 EP 0371278B1 EP 89120409 A EP89120409 A EP 89120409A EP 89120409 A EP89120409 A EP 89120409A EP 0371278 B1 EP0371278 B1 EP 0371278B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cartridge body
- holder
- cartridge
- wall
- impressions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/76—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a piston
- B65D83/761—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a piston the piston being actuated by a screw-shaft
Definitions
- the invention relates to a cartridge of the type specified in the preamble of claim 1.
- plastic or the like as a sealant, adhesive or the like. used to accommodate plastic cartridges.
- These cartridges consist of a cylindrical cartridge body in which a piston is slidably housed. At the front end of the cartridge body there is an outlet opening through which the plastic mass is pressed out when the piston is pushed forward.
- the piston is pushed forward by turning a spindle rod, the thread of which engages with a spindle nut which is supported on the rear region of the cartridge body.
- a clamping device is required with which the spindle nut is clamped onto the cartridge body.
- Such a clamping device is relatively complex and its attachment requires a separate assembly process.
- the cap-shaped holder on which the receiving thread for the spindle is molded, has an initially recessed and then bent forward by 180 ° edge, which forms an annular channel for receiving the end of the cartridge body.
- Claw-like projections are attached to the two sides of the ring channel, which protrude into the wall of the cartridge body when the holder is pushed onto the rear end of the cartridge body and thus prevent the holder from being pulled off the cartridge body and also prevent the holder from rotating relative to the cartridge body.
- the plastic holder has a complicated shape that is difficult to manufacture by injection molding and that the holder protrudes not only in the axial direction but also radially outward beyond the cartridge body.
- the invention has for its object to provide a cartridge of the type specified in the preamble of claim 1, in which the holder is easy to manufacture and assemble and in which the space requirement is reduced.
- the spindle nut is an integral part of a holder which is only inserted into the rear end of the cartridge and engages there automatically.
- the piston is pushed into the rear end of the cartridge body and then the holder, which can be designed in the manner of a cover, is inserted into the cartridge body until it engages in the recesses or impressions of the wall of the cartridge body.
- the spindle rod is rotated to squeeze plastic mass out of the cartridge, it is supported directly on the cartridge body via the spindle nut and the holder.
- the cartridge yields elastically, so that the holder can be inserted through slight deformation of the cartridge if the holder is relatively rigid.
- the shape of the recesses or embossments prevents the holder from retracting in the cartridge body. In the same way, rotation of the holder in the cartridge body is prevented.
- a major advantage is that the part consisting of the holder and the spindle nut is fixed to the cartridge body without any additional fastening devices, only a special shape at the rear end of the cartridge body ensuring that the holder is fixed.
- the cartridge thus consists of a few individual parts that can be easily assembled.
- the usual cylindrical cartridges can be provided with the recesses or impressions by a simple aftertreatment, so that no separate injection molds are required for the cartridge body.
- the holder is completely contained in the cartridge body when assembled. It does not protrude axially from the cartridge body at the rear end, nor does it protrude radially.
- the holder is a relatively easy to manufacture plastic part and it does not increase the size of the cartridge because it is completely in the cartridge inner is included.
- projections of the holder engage appropriately in corresponding recesses of the cartridge body.
- These recesses are preferably through holes which prevent both axial displacement of the holder and rotation. It is also possible to form the projections in a sawtooth shape so that they can be easily inserted into the cartridge body when the holder is axially inserted and can no longer recede after snapping into the recesses.
- the anti-twist device and the anti-push-out device are caused by separate impressions in the cartridge body.
- the elasticity required for the insertion of the holder can be obtained with the features specified in claim 6.
- the annular edge which merges into an end wall at only one end, can spring radially inwards at the other end.
- the force of the spindle rod tends to push the spindle nut out of the rear end of the cartridge body.
- the frusto-conical end wall of the holder is straight, as a result of which the annular rim is pressed even more outwards and pressed against the wall of the cartridge body.
- the cartridge 10 according to FIG. 1 has a cylindrical cartridge body 11 made of plastic.
- the cartridge body 11 is provided with an integrally molded front wall 12.
- On the front wall 12 a threaded outlet 13 is arranged, in which the outlet opening is located.
- the piston 14 is inserted, which is displaceable inside the cylindrical cartridge body in order to press the mass out of the outlet connection 13.
- the outlet opening in the outlet connection 13 can also be designed such that it is only opened by the user.
- the piston 14 has a cylindrical peripheral wall 15 and an arcuately curved front wall 16. At the rear of the front wall 16 there is an annular rib 17 which forms a bearing for the front end of a spindle rod 18.
- the spindle rod 18 is also made of plastic and it protrudes from the rear end of the cartridge body 11. At the end of the spindle rod 18, a turning handle 19 is provided.
- the screw thread of the spindle rod 18 stands with the Spindle nut 20 engaged.
- This spindle nut 20 is an integral part of a holder 21 which is fixed at the rear end inside the cartridge body 11.
- the spindle rod 18 is moved forward, whereby the piston 14 is pushed forward to express the plastic mass in the cartridge body.
- the spindle nut 20 consists of an internally threaded sleeve, the front end of which merges into an annular rim 23 via an annular end wall 22.
- the end wall 22 is frustoconical and the annular edge 23 coaxially surrounds the sleeve of the spindle nut 20.
- At the rear end of the edge 23 there are at least three outwardly directed projections 24 which are arranged distributed over the circumference. Each of these projections 24 engages in a recess 25 in the wall of the cartridge body 11.
- These recesses 25 are through holes which are arranged distributed around the circumference of the cartridge body and thus each have a limited circumferential extent.
- the cartridge body When the holder 21 is inserted into the cartridge body 11, the cartridge body expands elastically so that the projections 24 can be inserted into the rear end of the cartridge body 11. As soon as the projections 24 reach the area of the recesses 25, the cartridge body contracts again, the projections 24 engaging in the recesses 25.
- the holder 21 consists of a one-piece, relatively rigid plastic part.
- the entire cartridge is made entirely of plastic and is a single-use item. Only the spindle rod 18 can be reused after use in connection with another cartridge will.
- FIGS. 2 and 3 are largely the same as the first embodiment, so that only the differences are explained below:
- edge 23 is supported on the inside of the cartridge body 11.
- Its rear end abuts at least three first indentations 26, which are distributed around the circumference of the wall of the cartridge body 11 and are each delimited by a slot 27 at their front end.
- the inward end of the indentation 26, which forms one edge of the slot 27, acts as a stop surface to prevent the edge 23 of the holder 21 from being retracted.
- the indentations 26 allow the cap-shaped holder 21 to be inserted into the cartridge body from the rear end and prevent the holder from being pulled back but not from rotating the holder.
- second indentations 28 are provided on the cartridge body 11, which are also delimited by straight slots 29, but the slots 29 run in the longitudinal direction of the cartridge body.
- indentations 30 are provided, the positions of which correspond to those of the indentations 28 of the cartridge body.
- the cartridge body 11 first produced in the usual manner with a continuous wall.
- the recesses 25 and the indentations 26 and 28 are produced in a subsequent machining process.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pens And Brushes (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Sampling And Sample Adjustment (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Kartusche der im Oberbegriff des Anspruchs 1 angegebenen Art.The invention relates to a cartridge of the type specified in the preamble of claim 1.
Es ist bekannt, plastische Massen, die als Dichtungsmittel, Klebemittel o.dgl. verwendet werden, in Kartuschen aus Kunststoff unterzubringen. Diese Kartuschen bestehen aus einem zylindrischen Kartuschenkörper, in dem ein Kolben verschiebbar untergebracht ist. Am vorderen Ende des Kartuschenkörpers befindet sich eine Austrittsöffnung, durch die die plastische Masse beim Vorschieben des Kolbens ausgepreßt wird. Das Vorschieben des Kolbens geschieht durch Drehen einer Spindelstange, deren Gewinde mit einer Spindelmutter in Eingriff steht, welche sich am rückwärtigen Bereich des Kartuschenkörpers abstützt. Zur Abstützung der Spindelmutter an der glatten Wand des Kartuschenkörpers ist eine Klemmvorrichtung erforderlich, mit der die Spindelmutter am Kartuschenkörper festgeklemmt wird. Eine solche Klemmvorrichtung ist relativ aufwendig und ihre Befestigung erfordert einen separaten Montagevorgang.It is known plastic or the like as a sealant, adhesive or the like. used to accommodate plastic cartridges. These cartridges consist of a cylindrical cartridge body in which a piston is slidably housed. At the front end of the cartridge body there is an outlet opening through which the plastic mass is pressed out when the piston is pushed forward. The piston is pushed forward by turning a spindle rod, the thread of which engages with a spindle nut which is supported on the rear region of the cartridge body. To support the spindle nut on the smooth wall of the cartridge body, a clamping device is required with which the spindle nut is clamped onto the cartridge body. Such a clamping device is relatively complex and its attachment requires a separate assembly process.
Aus DE-U-76 10 820 ist eine Kartusche der im Oberbegriff des Patentanspruches 1 angegebenen Art bekannt. Bei der bekannten Kartusche weist der kappenförmige Halter, dem das Aufnahmegewinde für die Spindel angeformt ist, einen zunächst zurückspringenden und dann um 180° nach vorne gebogenen Rand auf, der einen Ringkanal zur Aufnahme des Endes des Kartuschenkörpers bildet. An den beiden Seiten des Ringkanals sind krallenartige Vorsprünge angebracht, die sich beim Aufschieben des Halters auf das rückwärtige Ende des Kartuschenkörpers in die Wand des Kartuschenkörpers einkrallen und somit ein Abziehen des Halters vom Kartuschenkörper und auch eine Drehung des Halters relativ zum Kartuschenkörper verhindern. Nachteilig ist, daß der aus Kunststoff bestehende Halter eine komplizierte Form hat, die schwierig im Spritzgußverfahren hergestellt werden kann und daß der Halter nicht nur in axialer Richtung sondern auch radial nach außen über den Kartuschenkörper hinaus vorsteht.From DE-U-76 10 820 a cartridge of the type specified in the preamble of claim 1 is known. In the known cartridge, the cap-shaped holder, on which the receiving thread for the spindle is molded, has an initially recessed and then bent forward by 180 ° edge, which forms an annular channel for receiving the end of the cartridge body. Claw-like projections are attached to the two sides of the ring channel, which protrude into the wall of the cartridge body when the holder is pushed onto the rear end of the cartridge body and thus prevent the holder from being pulled off the cartridge body and also prevent the holder from rotating relative to the cartridge body. It is disadvantageous that the plastic holder has a complicated shape that is difficult to manufacture by injection molding and that the holder protrudes not only in the axial direction but also radially outward beyond the cartridge body.
Der Erfindung liegt die Aufgabe zugrunde, eine Kartusche der im Oberbegriff des Anspruchs 1 angegebenen Art zu schaffen, bei der der Halter auf einfache Weise herstellbar und montierbar ist und bei der der Platzbedarf verringert ist.The invention has for its object to provide a cartridge of the type specified in the preamble of claim 1, in which the holder is easy to manufacture and assemble and in which the space requirement is reduced.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmalen.This object is achieved according to the invention with the features specified in the characterizing part of claim 1.
Bei der erfindungsgemäßen Kartusche ist die Spindelmutter einstückiger Bestandteil eines Halters, der in das rückwärtige Kartuschenende lediglich eingeschoben wird und dort selbsttätig einrastet. Nach dem Befüllen des Kartuschenkörpers mit der plastischen Masse wird der Kolben in das rückwärtige Ende des Kartuschenkörpers eingeschoben und danach wird der Halter, der nach Art eines Deckels ausgebildet sein kann, in den Kartuschenkörper eingeführt, bis er an den Ausnehmungen bzw. Einprägungen der Wand des Kartuschenkörpers einrastet. Wird die Spindelstange gedreht, um plastische Masse aus der Kartusche auszupressen, dann stützt sie sich über die Spindelmutter und den Halter unmittelbar am Kartuschenkörper ab. Beim Einschieben des Halters in den Kartuschenkörper gibt die Kartusche elastisch nach, so daß durch geringe Verformung der Kartusche der Halter eingeführt werden kann, wenn der Halter relativ starr ausgebildet ist. Ein Zurückweichen des Halters im Kartuschenkörper wird durch die Form der Ausnehmungen bzw. Einprägungen verhindert. In gleicher Weise wird auch ein Drehen des Halters im Kartuschenkörper verhindert. Ein wesentlicher Vorteil besteht darin, daß das aus dem Halter und der Spindelmutter bestehende Teil ohne jegliche zusätzliche Befestigungsvorrichtungen am Kartuschenkörper fixiert ist, wobei lediglich am rückwärtigen Ende des Kartuschenkörpers eine spezielle Formgebung dafür sorgt, daß der Halter fixiert wird. Die Kartusche besteht somit aus wenigen Einzelteilen, die leicht montiert werden können. Die üblichen zylindrischen Kartuschen können durch eine einfache Nachbehandlung mit den Ausnehmungen oder Einprägungen versehen werden, so daß keine gesonderten Spritzgußformen für den Kartuschenkörper benötigt werden. Der Halter ist im montierten Zustand vollständig im Kartuschenkörper enthalten. Er ragt weder am rückwärtigen Ende axial aus dem Kartuschenkörper heraus noch steht er radial über. Der Halter stellt ein relativ einfach zu fertigendes Kunststoffteil dar und er vergrößert nicht die Abmessungen der Kartusche, da er vollständig im Kartuschen inneren enthalten ist.In the cartridge according to the invention, the spindle nut is an integral part of a holder which is only inserted into the rear end of the cartridge and engages there automatically. After filling the cartridge body with the plastic mass the piston is pushed into the rear end of the cartridge body and then the holder, which can be designed in the manner of a cover, is inserted into the cartridge body until it engages in the recesses or impressions of the wall of the cartridge body. If the spindle rod is rotated to squeeze plastic mass out of the cartridge, it is supported directly on the cartridge body via the spindle nut and the holder. When the holder is pushed into the cartridge body, the cartridge yields elastically, so that the holder can be inserted through slight deformation of the cartridge if the holder is relatively rigid. The shape of the recesses or embossments prevents the holder from retracting in the cartridge body. In the same way, rotation of the holder in the cartridge body is prevented. A major advantage is that the part consisting of the holder and the spindle nut is fixed to the cartridge body without any additional fastening devices, only a special shape at the rear end of the cartridge body ensuring that the holder is fixed. The cartridge thus consists of a few individual parts that can be easily assembled. The usual cylindrical cartridges can be provided with the recesses or impressions by a simple aftertreatment, so that no separate injection molds are required for the cartridge body. The holder is completely contained in the cartridge body when assembled. It does not protrude axially from the cartridge body at the rear end, nor does it protrude radially. The holder is a relatively easy to manufacture plastic part and it does not increase the size of the cartridge because it is completely in the cartridge inner is included.
Mit dem Merkmal des Anspruchs 2 wird erreicht, daß Vorsprünge des Halters passend in entsprechend Ausnehmungen des Kartuschenkörpers eingreifen. Diese Ausnehmungen sind vorzugsweise Durchgangslöcher, die sowohl ein axiales Verschieben des Halters als auch eine Drehung verhindern. Es ist auch möglich, die Vorsprünge sägezahnförmig auszubilden, so daß sie beim axialen Einschieben des Halters in den Kartuschenkörper leicht eingeführt werden können und nach Einrasten in den Aussparungen nicht mehr zurückweichen können.With the feature of claim 2 it is achieved that projections of the holder engage appropriately in corresponding recesses of the cartridge body. These recesses are preferably through holes which prevent both axial displacement of the holder and rotation. It is also possible to form the projections in a sawtooth shape so that they can be easily inserted into the cartridge body when the holder is axially inserted and can no longer recede after snapping into the recesses.
Bei einer anderen Ausführungsform der Erfindung nach Anspruch 4 werden die Verdrehungssicherung und die Sicherung gegen Herausdrücken durch getrennte Eindrückungen im Kartuschenkörper hervorgerufen.In another embodiment of the invention according to claim 4, the anti-twist device and the anti-push-out device are caused by separate impressions in the cartridge body.
Die für das Einführen des Halters erforderliche Elastizität kann der Halter mit den im Anspruch 6 angegebenen Merkmalen erhalten. Der ringförmige Rand, der nur an einem Ende in eine Stirnwand übergeht, kann an dem anderen Ende radial nach innen federn. Die Kraft der Spindelstange ist bestrebt, die Spindelmutter aus dem rückwärtigen Ende des Kartuschenkörpers herauszudrücken. Dabei stellt sich die kegelstumpfförmige Stirnwand des Halters gerade, wodurch der ringförmige Rand noch stärker nach außen gedrückt und gegen die Wand des Kartuschenkörpers gepreßt wird.The elasticity required for the insertion of the holder can be obtained with the features specified in claim 6. The annular edge, which merges into an end wall at only one end, can spring radially inwards at the other end. The force of the spindle rod tends to push the spindle nut out of the rear end of the cartridge body. The frusto-conical end wall of the holder is straight, as a result of which the annular rim is pressed even more outwards and pressed against the wall of the cartridge body.
Im folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert.Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.
Es zeigen:
- Fig. 1 eine Seitenansicht einer ersten Ausführungsform der Kartusche, teilweise geschnitten,
- Fig. 2 eine Seitenansicht einer zweiten Ausführungsform der Kartusche, teilweise geschnitten, und
- Fig. 3 einen Schnitt entlang der Linie III-III von Fig. 2.
- 1 is a side view of a first embodiment of the cartridge, partially in section,
- Fig. 2 is a side view of a second embodiment of the cartridge, partially sectioned, and
- 3 shows a section along the line III-III of FIG. 2nd
Die Kartusche 10 nach Fig. 1 weist einen zylindrischen Kartuschenkörper 11 aus Kunststoff auf. Der Kartuschenkörper 11 ist mit einer einstückig angeformten Frontwand 12 versehen. An der Frontwand 12 ist ein mit Gewinde versehener Auslaßstutzen 13 angeordnet, in dem sich die Austrittsöffnung befindet.The
In den Kartuschenkörper 11 ist der Kolben 14 eingesetzt, der im inneren des zylindrischen Kartuschenkörpers verschiebbar ist, um die Masse aus dem Auslaßstutzen 13 auszupressen. Die Austrittsöffnung im Auslaßstutzen 13 kann auch so ausgebildet sein, daß sie erst vom Benutzer geöffnet wird. Der Kolben 14 weist eine zylindrische Umfangswand 15 und eine bogenförmig gewölbte Frontwand 16 auf. An der Rückseite der Frontwand 16 befindet sich eine ringförmige Rippe 17, die ein Lager für das vordere Ende einer Spindelstange 18 bildet. Die Spindelstange 18 besteht ebenfalls aus Kunststoff und sie ragt aus dem rückwärtigen Ende des Kartuschenkörpers 11 heraus. Am Ende der Spindelstange 18 ist ein Dreh-Handgriff 19 vorgesehen.In the
Das Schraubengewinde der Spindelstange 18 steht mit der Spindelmutter 20 in Eingriff. Diese Spindelmutter 20 ist integraler Bestandteil eines Halters 21, der am rückwärtigen Ende im Inneren des Kartuschenkörpers 11 fixiert ist. Durch Drehen des Handgriffs 19 wird die Spindelstange 18 vorwärtsbewegt, wodurch der Kolben 14 zum Ausdrücken der plastischen Masse im Kartuschenkörper vorgeschoben wird.The screw thread of the
Die Spindelmutter 20 besteht aus einer mit Innengewinde versehenen Hülse, deren vorderes Ende über eine ringförmige Stirnwand 22 in einen ringförmigen Rand 23 übergeht. Die Stirnwand 22 ist kegelstumpfförmig ausgebildet und der ringförmige Rand 23 umschließt die Hülse der Spindelmutter 20 koaxial. Am rückwärtigen Ende des Randes 23 befinden sich mindestens drei nach außen gerichtete Vorsprünge 24, die umfangsmäßig verteilt angeordnet sind. Jeder dieser Vorsprünge 24 greift in eine Ausnehmung 25 der Wand des Kartuschenkörpers 11 ein. Diese Ausnehmungen 25 sind Durchgangslöcher, die um den Umfang des Kartuschenkörpers verteilt angeordnet sind und somit jeweils eine begrenzte Umfangserstreckung haben.The
Beim Einführen des Halters 21 in den Kartuschenkörper 11 dehnt sich der Kartuschenkörper elastisch, damit die Vorsprünge 24 in das rückwärtige Ende des Kartuschenkörpers 11 eingeführt werden können. Sobald die Vorsprünge 24 in den Bereich der Ausnehmungen 25 gelangen, zieht sich der Kartuschenkörper wieder zusammen, wobei die Vorsprünge 24 in den Ausnehmungen 25 einrasten.When the
Der Halter 21 besteht aus einem einstückigen relativ starren Kunststoffteil. Die gesamte Kartusche besteht ausschließlich aus Kunststoff und bildet einen Einmalartikel. Lediglich die Spindelstange 18 kann nach Gebrauch in Verbindung mit einer anderen Kartusche wiederverwendet werden.The
Das Ausführungsbeispiel der Fign. 2 und 3 gleicht weitgehend dem ersten Ausführungsbeispiel, so daß im folgenden nur die Unterschiede erläutert werden: Am Rand 23 sind keine Vorsprünge vorhanden. Dieser Rand stützt sich vielmehr an der Innenseite des Kartuschenkörpers 11 ab. Sein rückwärtiges Ende stößt dabei gegen mindestens drei erste Eindrückungen 26, die umfangsmäßig verteilt an der Wand des Kartuschenkörpers 11 angebracht sind und die jeweils an ihrem vorderen Ende durch einen Schlitz 27 begrenzt sind. Das nach innen gerichtete Ende der Eindrückung 26, das die eine Kante des Schlitzes 27 bildet, wirkt als Anschlagfläche zum Verhindern des Zurückziehens des Randes 23 des Halters 21.The embodiment of FIGS. 2 and 3 are largely the same as the first embodiment, so that only the differences are explained below: There are no projections at
Die Eindrückungen 26 ermöglichen das Einführen des kappenförmigen Halters 21 vom rückwärtigen Ende her in den Kartuschenkörper und sie verhindern das Zurückziehen des Halters, jedoch nicht ein Drehen des Halters. Zur Verhinderung des Drehens sind an dem Kartuschenkörper 11 zweite Eindrückungen 28 vorgesehen, die ebenfalls durch gerade Schlitze 29 begrenzt sind, wobei die Schlitze 29 jedoch in Längsrichtung des Kartuschenkörpers verlaufen. Am Rand 23 des Halters 21 sind Eindrückungen 30 vorgesehen, deren Positionen denjenigen der Eindrücke 28 des Kartuschenkörpers entsprechen. Bei dem Versuch, den Halter 22 zu drehen, rasten die Eindrückungen 28 in den Eindrückungen 30 ein, so daß die ineinandergreifenden Eindrückungen 28,30 den Halter gegen Verdrehung sichern.The
Bei beiden Ausführungsbeispielen wird der Kartuschenkörper 11 zunächst in der üblichen Weise mit durchgehender Wand hergestellt. Die Ausnehmungen 25 und die Eindrückungen 26 bzw. 28 werden in einem nachträglichen Bearbeitungsvorgang hergestellt.In both embodiments, the
Claims (6)
- A cartridge for plastic masses comprising a cylindrical cartridge body (11) of plastics material containing a piston (14) and having a discharge opening at the front end, and a spindle nut (20) supported at the rear end of said cartridge body and being in engagement with a spindle rod (18) pressing against said piston (14), said spindle nut (20) being an integral part of a holder (21), the edge (23) of which is held at the wall of said cartridge body (11) so as to be secured against rotation and against being pushed out,
characterised in
that said holder (21) is completely contained within said cartridge body (11) and that said cartridge body, which is formed with a straight cylinder wall through to the rear end thereof, is provided with circumferentially limited recesses (25) or impressions (26, 28) at which the outermost periphery of said edge (23) of said holder engages. - The cartridge of claim 1, characterised in that said holder (21) has said edge (23) provided with projections (24) that engage in preformed recesses (25) penetrating the wall of said cartridge body (11).
- The cartridge of claim 1, characterised in that said impressions (26, 28) of said cartridge body (11) are indentations defined by slots (27, 28).
- The cartridge of claim 3, characterised in that first impressions (26) are provided, the slots (27) of which extend circumferentially so as to prevent said holder (21) from being pushed out, and second impressions (28) are provided, the slots (29) of which extend in the longitudinal direction of said cartridge body (11) so as to prevent said holder (21) from being rotated.
- The cartridge of claim 1 or 4, characterised in that said indentations (26, 28) are serration-shaped.
- The cartridge of one of claims 1 to 5, characterised in that said holder (21) has a trough directed towards the front end, said spindle nut (20) extending rearward from the front wall (22) of said trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89120409T ATE81632T1 (en) | 1988-11-29 | 1989-11-03 | CARTRIDGE FOR PLASTIC MASS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3840131 | 1988-11-29 | ||
| DE3840131A DE3840131A1 (en) | 1988-11-29 | 1988-11-29 | CARTRIDGE FOR PLASTIC MEASURES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0371278A1 EP0371278A1 (en) | 1990-06-06 |
| EP0371278B1 true EP0371278B1 (en) | 1992-10-21 |
Family
ID=6368047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89120409A Expired - Lifetime EP0371278B1 (en) | 1988-11-29 | 1989-11-03 | Cartridge for plastic masses |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0371278B1 (en) |
| AT (1) | ATE81632T1 (en) |
| DE (2) | DE3840131A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9718571D0 (en) * | 1997-09-03 | 1997-11-05 | Brown Michael E | Spring-urged dispenser of a flowable preparation |
| DE102015002741A1 (en) * | 2015-03-05 | 2016-09-08 | Kurt Schmid | Squeezing device for squeezing cartridges |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7213271U (en) * | 1974-06-06 | Perennatorwerk Hagen A Gmbh | Device for pressing out viscous masses, in particular pastes, such as adhesive, sealant and the like, from packaging containers | |
| DE400178C (en) * | 1923-07-19 | 1924-08-16 | Jakob Sax Wyss | Color saving press for oil colors u. like |
| US2079744A (en) * | 1935-08-09 | 1937-05-11 | Maguire Garnet Adam | Dispenser |
| CH261014A (en) * | 1944-10-17 | 1949-04-15 | Gabler Josef | Set of container parts which can be assembled to form a container for receiving and dispensing pasty substances. |
| DE1206356B (en) * | 1961-11-14 | 1965-12-02 | Bodensee Dental O H G | Cylindrical container with screw-in spindle and piston for ejecting the contents through an opening on the face |
| DE7610820U1 (en) * | 1976-04-07 | 1979-07-29 | Fischbach A Kg | Extrusion containers |
| DE7703989U1 (en) * | 1977-02-10 | 1977-05-26 | Espe Pharm Praep | Device for dispensing highly viscous masses |
| EP0079193A3 (en) * | 1981-11-11 | 1984-03-28 | Cuprinol Limited | Cartridge for dispensing a fluent substance |
-
1988
- 1988-11-29 DE DE3840131A patent/DE3840131A1/en not_active Withdrawn
-
1989
- 1989-11-03 EP EP89120409A patent/EP0371278B1/en not_active Expired - Lifetime
- 1989-11-03 AT AT89120409T patent/ATE81632T1/en not_active IP Right Cessation
- 1989-11-03 DE DE8989120409T patent/DE58902515D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0371278A1 (en) | 1990-06-06 |
| ATE81632T1 (en) | 1992-11-15 |
| DE58902515D1 (en) | 1992-11-26 |
| DE3840131A1 (en) | 1990-05-31 |
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