EP1140371A1 - Ejection device for a cartridge - Google Patents

Ejection device for a cartridge

Info

Publication number
EP1140371A1
EP1140371A1 EP99964671A EP99964671A EP1140371A1 EP 1140371 A1 EP1140371 A1 EP 1140371A1 EP 99964671 A EP99964671 A EP 99964671A EP 99964671 A EP99964671 A EP 99964671A EP 1140371 A1 EP1140371 A1 EP 1140371A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
cap
piston
bore
ejection device
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
EP99964671A
Other languages
German (de)
French (fr)
Other versions
EP1140371B1 (en
Inventor
Eugen Prestele
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.)
Sulzer Chemtech AG
Original Assignee
Sulzer Chemtech AG
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 Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Publication of EP1140371A1 publication Critical patent/EP1140371A1/en
Application granted granted Critical
Publication of EP1140371B1 publication Critical patent/EP1140371B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • B05C17/0133—Nut and bolt advancing mechanism, e.g. threaded piston rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B05C17/00559—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components the different components being stored in coaxial chambers
    • 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
    • B05C17/00576—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 characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
    • 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
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0011—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container moved by a screw-shaft

Definitions

  • the innovation relates to an ejection device for a cartridge according to the preamble of claim 1.
  • cartridges that contain two components that are located in concentrically arranged chambers.
  • the chambers are closed on the back by a piston, the piston being annular for the outer chamber.
  • cartridges of this type can also be emptied with the aid of an ejection plunger, which is sleeve-shaped with a central rod.
  • the sleeve wall comes into contact with the annular piston, while the central rod comes into contact with the piston of the inner chamber.
  • the central rod and the sleeve wall are connected to each other by a floor. The contents of the cartridge can be emptied by placing the bottom on a surface and pressing the cartridge into the ejection plunger.
  • This push-out device which only requires a push-out ram, is relatively inexpensive, but extremely difficult to handle.
  • the object is to design the ejection device for a cartridge containing at least two components in such a way that a simple emptying option is ensured, in particular that the mixer placed on the cartridge can be placed during emptying where the material of the cartridge is to be applied.
  • Figure 1 is a side view of the cartridge with ejection device.
  • Fig. 2 is a view in the direction of arrows II-II;
  • FIG. 3 shows a section along the line III-III in Fig. 1.
  • FIG. 4 shows a section along the line IN-IN in Fig. 3.
  • Fig. 5 is a plan view of the annular piston used in the cartridge.
  • FIG. 6 shows a section along the line VI-VI in FIG. 5th
  • the cartridge shown in FIGS. 1 and 4 is a two-component cartridge with an inner chamber 1 and an outer chamber 2 concentric therewith. Both chambers 1, 2 open into a cartridge outlet opening 3.
  • the chamber 1 is closed on the back by a piston 4 of circular cross-section, while the chamber 2 is closed by an annular piston 5.
  • the volumes of the chambers 1, 2 correspond to the mixing ratio of the two components contained in the chambers 1, 2. This means that the ejection device has to move the pistons 4, 5 by the same amount in the direction of the outlet opening 3.
  • the ejection device has a cap 6, which is connected to the back of the cartridge via bayonet catches 7.
  • the bayonet locks 7 serve as an axial lock for the cap 6, which is thus immovably connected to the rear of the cartridge in the axial direction.
  • the axial securing of the cap 6 on the back of the cartridge can also be done by a thread engagement between the cap and the cartridge.
  • the cap 6 has a central threaded bore 8, the thread of which is in engagement with the thread of a threaded spindle 9.
  • the threaded spindle 9 has a cylindrical extension 10 which bears against the piston 4 as a bearing.
  • the part of the threaded spindle 9 projecting from the cap 6 is rotatably mounted in a head plate 11 and ends in a wing-like handle 12 projecting beyond the head plate 11.
  • three pressure rods 13 are provided, which are arranged at a radial distance from the spindle 9, offset from one another by 120 °. These push rods 13 run from the top plate 11 parallel to the threaded spindle 9 in the direction of the cap 6 and are guided through holes 14 through this cap into the interior of the cartridge. On the cartridge-side ends of the push rods 13, an annular abutment 16 is placed over bores 15, which abuts against the annular piston 5.
  • Figures 1 and 4 show the starting position of the ejection device when the cartridge is filled and to be emptied.
  • the threaded spindle 9 is rotated via the handle 12, which screwed into the interior of the cartridge via the thread of the threaded bore 8. Due to the abutment 10 resting on the back of the piston 4, this piston 4 is displaced in the direction of the cartridge outlet opening 3. Since the axial movement of the threaded spindle 9 is also carried out by the head plate 11, the push rods 13 are also moved in the direction of the cartridge synchronously with the threaded spindle 9. Their abutment 16 thus moves the piston 5 synchronously with the piston 4.
  • the threaded bore 8 is arranged in a sleeve 17 which projects beyond the plane of the cap 6.
  • Support ribs 18 run from the edge of the cap 6 to the sleeve 7.
  • the bore supporting the cylindrical projection 19 of the threaded spindle 9 is also arranged in a sleeve 20, to which 11 support ribs 21 extend from the edge of the head plate.
  • the threaded spindle 9 is supported with a shoulder 22 on the outside of the sleeve 20.
  • pistons 4 and 5 are resistant to the outgassing of such substances.
  • the pistons are therefore, as illustrated in Figures 5 and 6, made of polyamide. However, since this material is too hard to form sealing lips, they are made of low-density polyethylene.
  • the actual piston 4 or 5 is first injection molded from polyamide. In a subsequent second operation, the sealing lips 23 are molded from LDPE.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention relates to an ejection device for a cartridge which comprises two chambers (1, 2) arranged concentrically to one another. Each chamber (1, 2) is provided with a piston (4, 5). The ejection device also comprises ejection tappets which can be shifted in the direction of the outlet (3) of the cartridge. A cap (6) is provided which can be axially locked with the cartridge. The ejection tappets are guided through said cap (6). The external ends of the ejection tappets for the annular piston (5) are connected to one another via a top piece (11). A threaded spindle (9) is supported at the top piece (11). Said threaded spindle (9) extends through a threaded borehole (8) of the cap (6) and serves as an ejection tappet for the middle piston (4).

Description

Ausdrückvorrichtung für eine Kartusche Ejection device for a cartridge
Die Neuerung betrifft eine Ausdrückvorrichtung für eine Kartusche nach dem Oberbegriff des Anspruches 1.The innovation relates to an ejection device for a cartridge according to the preamble of claim 1.
Zum Ausdrücken von 1 -Komponenten-Kartuschen ist es bekannt, auf die Rückseite der Kartusche eine Kappe aufzusetzen, welche in axialer Richtung verriegelt wird. Diese Kappe weist zentrisch eine Gewindebohrung auf, durch welche eine Gewindespindel verläuft, die einerseits ein Wiederlager aufweist, das zur Anlage an die Rückseite des in der Kartusche verschiebbaren Kolbens kommt und andererseits einen flügelartigen Handgriff besitzt. Durch Drehen der Spindel bewegt sich diese in das Innere der Kartusche und verschiebt hierbei den Kolben, wodurch über die Kartuschenaustrittsöffnung das in der Kartusche befindliche Material austritt. Diese Ausdrückvorrichtung ist jedoch nur für Kartuschen mit einer einzigen Kammer geeignet.To push out 1-component cartridges, it is known to put a cap on the back of the cartridge, which is locked in the axial direction. This cap has a central threaded bore through which a threaded spindle runs, which on the one hand has a bearing, which comes to rest on the back of the piston which can be moved in the cartridge and on the other hand has a wing-like handle. By turning the spindle, it moves into the interior of the cartridge and thereby displaces the piston, as a result of which the material in the cartridge exits via the cartridge outlet opening. However, this ejection device is only suitable for cartridges with a single chamber.
Daneben sind Kartuschen bekannt, die zwei Komponenten enthalten, die sich in konzentrisch zueinander angeordneten Kammern befinden. Die Kammern sind rückseitig durch je einen Kolben verschlossen, wobei der Kolben für die äußere Kammer ringförmig ausgebildet ist.In addition, cartridges are known that contain two components that are located in concentrically arranged chambers. The chambers are closed on the back by a piston, the piston being annular for the outer chamber.
Zum Entleeren derartiger Kartuschen werden Ausdrückpistolen verwendet, die für jeden Kolben ein Widerlagern aufweisen. Derartige Ausdrückpistolen sind relativ teuer. Man kann derartige Kartuschen jedoch auch unter zu Hilfenahme eines Ausdrückstössels entleeren, der hülsenförmig mit einer zentrischen Stange ausgebildet ist. Die Hülsenwand tritt hierbei in Kontakt mit dem ringförmigen Kolben, während die zentrische Stange in Kontakt tritt mit dem Kolben der inneren Kammer. Die zentrische Stange und die Hülsenwand sind durch einen Boden miteinander verbunden. Durch Aufsetzen des Bodens auf eine Unterlage und durch Eindrücken der Kartusche in den Ausdrückstössel kann der Kartuscheninhalt entleert werden.To empty such cartridges, squeeze guns are used which have an abutment for each piston. Such guns are relatively expensive. However, cartridges of this type can also be emptied with the aid of an ejection plunger, which is sleeve-shaped with a central rod. The sleeve wall comes into contact with the annular piston, while the central rod comes into contact with the piston of the inner chamber. The central rod and the sleeve wall are connected to each other by a floor. The contents of the cartridge can be emptied by placing the bottom on a surface and pressing the cartridge into the ejection plunger.
Diese nur einen Ausdrückstössel benötigende Ausdrückvorrichtung ist relativ preisgünstig, jedoch außerordentlich umständlich in der Handhabung.This push-out device, which only requires a push-out ram, is relatively inexpensive, but extremely difficult to handle.
Es besteht die Aufgabe, die Ausdrückvorrichtung für eine mindestens zwei Komponenten enthaltene Kartusche so auszubilden, daß eine einfache Entleermöglichkeit gewährleistet ist, insbesondere daß der auf die Kartusche aufgesetzte Mischer während des Entleerens dort angesetzt werden kann, wo das Material der Kartusche aufgebracht werden soll.The object is to design the ejection device for a cartridge containing at least two components in such a way that a simple emptying option is ensured, in particular that the mixer placed on the cartridge can be placed during emptying where the material of the cartridge is to be applied.
Gelöst wird diese Aufgabe mit den Merkmalen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This object is achieved with the features of claim 1. Advantageous refinements can be found in the subclaims.
Ein Ausführungsbeispiel wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:An embodiment is explained below with reference to the drawings. Show it:
Fig. 1 eine Seitenansicht der Kartusche mit Ausdrückvorrichtung;Figure 1 is a side view of the cartridge with ejection device.
Fig. 2 eine Ansicht in Richtung der Pfeile II-II;Fig. 2 is a view in the direction of arrows II-II;
Fig. 3 einen Schnitt längs der Linie III-III in Fig. 1 ;3 shows a section along the line III-III in Fig. 1.
Fig. 4 einen Schnitt längs der Linie IN-IN in Fig. 3;4 shows a section along the line IN-IN in Fig. 3.
Fig. 5 eine Draufsicht auf den bei der Kartusche verwendeten Ringkolben undFig. 5 is a plan view of the annular piston used in the cartridge and
Fig. 6 einen Schnitt längs der Linie VI-VI in Fig. 5.6 shows a section along the line VI-VI in FIG. 5th
Die in den Figuren 1 und 4 dargestellte Kartusche ist eine zwei-Komponenten aufweisende Kartusche mit einer inneren Kammer 1 und einer dazu konzentrischen äußeren Kammer 2. Beide Kammern 1, 2 münden in einer Kartuschenaustrittsöffhung 3.The cartridge shown in FIGS. 1 and 4 is a two-component cartridge with an inner chamber 1 and an outer chamber 2 concentric therewith. Both chambers 1, 2 open into a cartridge outlet opening 3.
Die Kammer 1 ist rückseitig durch einen Kolben 4 kreisförmigen Querschnitts verschlossen, während die Kammer 2 durch einen kreisringförmigen Kolben 5 verschlossen ist.The chamber 1 is closed on the back by a piston 4 of circular cross-section, while the chamber 2 is closed by an annular piston 5.
Die Volumen der Kammern 1, 2 entsprechen dem Mischungsverhältnis der beiden in den Kammern 1, 2 enthaltenen Komponenten. Dies bedeutet, daß die Ausdrückvorrichtung die Kolben 4, 5 um gleiche Beträge in Richtung der Austrittsöffhung 3 zu verschieben hat.The volumes of the chambers 1, 2 correspond to the mixing ratio of the two components contained in the chambers 1, 2. This means that the ejection device has to move the pistons 4, 5 by the same amount in the direction of the outlet opening 3.
Die Ausdrückvorrichtung weist eine Kappe 6 auf, welche über Bajonettverschlüsse 7 mit der Rückseite der Kartusche verbunden ist. Die Bajonettverschlüsse 7 dienen als Axialsicherung für die Kappe 6, die somit in axialer Richtung unverschiebbar mit der Rückseite der Kartusche verbunden ist. Die Axialsicherung der Kappe 6 an der Rückseite der Kartusche kann auch durch einen Gewindeeingriff zwischen Kappe und Kartusche erfolgen.The ejection device has a cap 6, which is connected to the back of the cartridge via bayonet catches 7. The bayonet locks 7 serve as an axial lock for the cap 6, which is thus immovably connected to the rear of the cartridge in the axial direction. The axial securing of the cap 6 on the back of the cartridge can also be done by a thread engagement between the cap and the cartridge.
Die Kappe 6 weist eine mittige Gewindebohrung 8 auf, deren Gewinde in Eingriff steht mit dem Gewinde einer Gewindespindel 9. Die Gewindespindel 9 weist einen zylindrischen Ansatz 10 auf, der als Wiederlager gegen den Kolben 4 anliegt.The cap 6 has a central threaded bore 8, the thread of which is in engagement with the thread of a threaded spindle 9. The threaded spindle 9 has a cylindrical extension 10 which bears against the piston 4 as a bearing.
Der aus der Kappe 6 überstehende Teil der Gewindespindel 9 ist in einer Kopfplatte 11 drehbar gelagert und endet in einem über die Kopfplatte 11 überstehenden flügelartigen Handgriff 12.The part of the threaded spindle 9 projecting from the cap 6 is rotatably mounted in a head plate 11 and ends in a wing-like handle 12 projecting beyond the head plate 11.
Zur Kopfplatte 1 1 einstückig sind drei Druckstangen 13 vorgesehen, die in radialem Abstand zur Spindel 9, zueinander um 120° versetzt angeordnet sind. Diese Druckstangen 13 verlaufen von der Kopfplatte 11 parallel zur Gewindespindel 9 in Richtung der Kappe 6 und sind über Bohrungen 14 durch diese Kappe in das Innere der Kartusche geführt. Auf die kartuschenseitigen Enden der Druckstangen 13 ist über Bohrungen 15 ein ringförmiges Wiederlager 16 aufgesetzt, welches gegen den Ringkolben 5 anliegt.To the head plate 1 1 in one piece, three pressure rods 13 are provided, which are arranged at a radial distance from the spindle 9, offset from one another by 120 °. These push rods 13 run from the top plate 11 parallel to the threaded spindle 9 in the direction of the cap 6 and are guided through holes 14 through this cap into the interior of the cartridge. On the cartridge-side ends of the push rods 13, an annular abutment 16 is placed over bores 15, which abuts against the annular piston 5.
Die Figuren 1 und 4 zeigen die Ausgangsstellung der Ausdrückvorrichtung bei gefüllter und zu entleerender Kartusche.Figures 1 and 4 show the starting position of the ejection device when the cartridge is filled and to be emptied.
Nachdem die Kappe 6 über die Bajonettverschlüsse 7 auf die Rückseite der Kartusche aufgesetzt ist, wird über den Handgriff 12 die Gewindespindel 9 gedreht, die sich über das Gewinde der Gewindebohrung 8 in das Innere der Kartusche einschraubt. Durch das an der Rückseite des Kolbens 4 anliegende Wiederlager 10 wird dieser Kolben 4 in Richtung der Kartuschenaustrittsöffhung 3 verschoben. Da die Axialbewegung der Gewindespindel 9 auch von der Kopfplatte 11 ausgeführt wird, werden synchron zur Gewindespindel 9 auch die Druckstangen 13 in Richtung der Kartusche bewegt. Deren Widerlager 16 verschiebt somit den Kolben 5 synchron zum Kolben 4.After the cap 6 is placed over the bayonet catches 7 on the back of the cartridge, the threaded spindle 9 is rotated via the handle 12, which screwed into the interior of the cartridge via the thread of the threaded bore 8. Due to the abutment 10 resting on the back of the piston 4, this piston 4 is displaced in the direction of the cartridge outlet opening 3. Since the axial movement of the threaded spindle 9 is also carried out by the head plate 11, the push rods 13 are also moved in the direction of the cartridge synchronously with the threaded spindle 9. Their abutment 16 thus moves the piston 5 synchronously with the piston 4.
Die Gewindebohrung 8 ist in einer über die Ebene der Kappe 6 überstehenden Hülse 17 angeordnet. Vom Rand der Kappe 6 verlaufen Stützrippen 18 zur Hülse 7. Die den zylindrischen Ansatz 19 der Gewindespindel 9 lagernde Bohrung ist ebenfalls in einer Hülse 20 angeordnet, zu welcher vom Rand der Kopfplatte 11 Stützrippen 21 verlaufen. Die Gewindespindel 9 stützt sich mit einem Ansatz 22 an der Außenseite der Hülse 20 ab.The threaded bore 8 is arranged in a sleeve 17 which projects beyond the plane of the cap 6. Support ribs 18 run from the edge of the cap 6 to the sleeve 7. The bore supporting the cylindrical projection 19 of the threaded spindle 9 is also arranged in a sleeve 20, to which 11 support ribs 21 extend from the edge of the head plate. The threaded spindle 9 is supported with a shoulder 22 on the outside of the sleeve 20.
Enthält das in den Kammern 1, 2 befindliche Material flüchtige Kunststoffbestandteile, wie z. B. Styrol, dann ist es erforderlich, daß die Kolben 4 bzw. 5 gegen das Ausgasen solcher Stoffe beständig sind. Die Kolben werden daher, wie in den Figuren 5 und 6 verdeutlicht, aus Polyamid hergestellt. Da dieses Material jedoch zu hart für die Ausbildung von Dichtlippen ist, werden diese in low-density-Polyethylen ausgeführt. Bei der Herstellung wird zuerst der eigentliche Kolben 4 bzw. 5 spritztechnisch aus Polyamid hergestellt. Bei einem sich daran anschließenden zweiten Arbeitsvorgang werden die Dichtlippen 23 aus LDPE angespritzt. Contains the material located in chambers 1, 2 volatile plastic components such. B. styrene, then it is necessary that the pistons 4 and 5 are resistant to the outgassing of such substances. The pistons are therefore, as illustrated in Figures 5 and 6, made of polyamide. However, since this material is too hard to form sealing lips, they are made of low-density polyethylene. During manufacture, the actual piston 4 or 5 is first injection molded from polyamide. In a subsequent second operation, the sealing lips 23 are molded from LDPE.

Claims

Ansprüche Expectations
1. Ausdrückvorrichtung für eine zwei-Komponenten enthaltende Kartusche mit jeweils einer Kammer (1, 2) für jede Komponente und mit die Rückseiten der Kammern (1, 2) verschließenden Kolben (4, 5), die gemeinsam von Ausdrückstösseln in Richtung der Kartuschenaustrittsöffnung (3) verschiebbar sind und die Ausdrückstössel für jeden Kolben (4, 5) eine zur Anlage an die jeweilige Kolbenrückseite kommendes Wiederlager (10, 16) aufweisen, ein mittiger, koaxial zur Kartuschenachse verlaufender Ausdrückstössel in einem Kopfstück drehbar gelagert ist und durch eine erste Bohrung eine auf die Rückseite der Kartusche aufsetzbaren Kappe (6) geführt ist und im radialen Abstand zum mittigen Ausdrückstössel angeordnete als weitere Ausdrückstössel wirkende Druckstangen (13), die einstückig mit dem Kopfstück sind, durch zweite Bohrungen (14) der Kappe (6) geführt sind, dadurch gekennzeichnet, daß die Kappe (6) mit der Kartusche axial verriegelbar ist, die erste Bohrung eine Gewindebohrung (8) ist und der mittige Ausdrückstössel aus eine mit der Gewindebohrung (8) in Eingriff stehenden Gewindespindel (9) besteht.1.Ejection device for a cartridge containing two components, each with a chamber (1, 2) for each component and with pistons (4, 5) closing the rear sides of the chambers (1, 2), which are pushed together by ejecting pushers in the direction of the cartridge outlet opening ( 3) are displaceable and the push-out plungers for each piston (4, 5) have a bearing (10, 16) which comes into contact with the respective piston rear side, a central push-out plunger which runs coaxially to the cartridge axis is rotatably mounted in a head piece and through a first bore a cap (6) that can be placed on the back of the cartridge is guided and pressure rods (13), which are arranged as a further pushing rod and which are integral with the head piece, are guided through second bores (14) of the cap (6) and are arranged at a radial distance from the central pushing rod , characterized in that the cap (6) can be locked axially with the cartridge, the first bore a thread is bore (8) and the central push rod consists of a threaded spindle (9) which is in engagement with the threaded bore (8).
2. Ausdrückvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die koaxial zur Achse der Kartusche verlaufende Gewindespindel (9) auf den Kolben (4) der Innenkammer (1) wirkt und mehrere über den Umfang der Kappe (6) verteilte Druckstangen (13) auf den Ringkolben (5) der Außenkammer (2) wirken.2. ejection device according to claim 1, characterized in that the coaxial to the axis of the cartridge threaded spindle (9) acts on the piston (4) of the inner chamber (1) and a plurality of pressure rods (13) distributed over the circumference of the cap (6) the annular piston (5) of the outer chamber (2) act.
3. Ausdrückvorrichtung nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß die Gewindebohrung (8) in einer über die Kappe (6) überstehenden und zu dieser einstückigen Hülse (17) angeordnet ist, zu der Verstärkungsrippen (18) vom Rand der Kappe (6) verlaufen.3. ejection device according to claim 1 or 2, characterized in that the threaded bore (8) in a projecting over the cap (6) and to this one-piece sleeve (17) is arranged, to the reinforcing ribs (18) from the edge of the cap (6) run.
4. Ausdrückvorrichtung nach einem der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß drei um 120° zueinander versetzte Druckstangen (13) vorgesehen sind. 4. Ejecting device according to one of claims 1 to 3, characterized in that three push rods (13) offset from one another by 120 ° are provided.
5. Ausdrückvomchtung nach einem der Ansprüche 1 bis 4 dadurch gekennzeichnet, daß die Gewindespindel (9) in einer Bohrung einer Kopfplatte (11) gelagert ist, die in einer zu dieser Kopfplatte (11) einstückigen Hülse (20) angeordnet ist, zu der Verstärkungsrippen (21) vom Rand der Kopfplatte (11) verlaufen.5. Expressing device according to one of claims 1 to 4, characterized in that the threaded spindle (9) is mounted in a bore in a head plate (11) which is arranged in a sleeve (20) integral with this head plate (11), to the reinforcing ribs (21) from the edge of the head plate (11).
6. Ausdrückvorrichtung nach einem der Ansprüche 1 bis 5 dadurch gekennzeichnet, daß die Kappe (6) und die Rückseite der Kartusche über Bajonettverschlüsse (7) miteinander verbindbar sind.6. Ejecting device according to one of claims 1 to 5, characterized in that the cap (6) and the back of the cartridge can be connected to one another via bayonet catches (7).
7. Ausdrückvorrichtung nach einem der Ansprüche 1 bis 6 dadurch gekennzeichnet, daß die Druckstangen (13) mit einem gemeinsamen ringförmigen Wiederlager (16) verbunden sind.7. Expressing device according to one of claims 1 to 6, characterized in that the push rods (13) are connected to a common annular abutment (16).
8. Ausdrückvorrichtung nach einem der Ansprüche 1 bis 7 dadurch gekennzeichnet, daß die Kolben (4, 5) aus Polyamid und deren Dichtlippen (23) aus einem low- density-Polyethylen bestehen, wobei die Dichtlippen (23) an den Kolben (5, 6) spritztechnisch angespritzt sind. 8. ejection device according to one of claims 1 to 7, characterized in that the pistons (4, 5) made of polyamide and their sealing lips (23) consist of a low-density polyethylene, the sealing lips (23) on the piston (5, 6) are injection molded.
EP99964671A 1998-12-30 1999-12-23 Ejection device for a cartridge Expired - Lifetime EP1140371B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29823237U 1998-12-30
DE29823237U DE29823237U1 (en) 1998-12-30 1998-12-30 Ejection device for a cartridge
PCT/EP1999/010360 WO2000040341A1 (en) 1998-12-30 1999-12-23 Ejection device for a cartridge

Publications (2)

Publication Number Publication Date
EP1140371A1 true EP1140371A1 (en) 2001-10-10
EP1140371B1 EP1140371B1 (en) 2002-07-17

Family

ID=8067314

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Application Number Title Priority Date Filing Date
EP99964671A Expired - Lifetime EP1140371B1 (en) 1998-12-30 1999-12-23 Ejection device for a cartridge

Country Status (4)

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US (1) US6520381B1 (en)
EP (1) EP1140371B1 (en)
DE (2) DE29823237U1 (en)
WO (1) WO2000040341A1 (en)

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US20070250013A1 (en) * 2006-03-31 2007-10-25 Brennan Robert C Self-contained single dose dual fluid dispenser
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Also Published As

Publication number Publication date
DE59902084D1 (en) 2002-08-22
US6520381B1 (en) 2003-02-18
EP1140371B1 (en) 2002-07-17
WO2000040341A1 (en) 2000-07-13
DE29823237U1 (en) 1999-02-25

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