EP1500606A2 - Multi- component cartridge - Google Patents

Abstract

The multi-component cartridge has a co-axial outlet (3) with an outer (4) and an inner (5) tube, a detachable cap, and a seal. The seal has at least one sideways protruding sealing edge which is located on the inner and/or outer side of the inner and/or outer outlet tube and/or on the side of the cap's sealing member facing the outer and/or inner side of the inner and/or outer outlet tube. The cap has two sealing members defining an annular groove for the inner and/or outer outlet tube.

Description

The invention relates to a multi-component cartridge, in particular a Two-component cartridge, according to the preamble of claim 1.

Such cartridges are e.g. for storage and storage of Multi-component adhesives, curing sealants, resins or similar used. The Mixture of the components takes place only when the cartridge is pressed in a separate Static mixer, which is placed on the cartridge. The commonly used Multi-component cartridges have separate material receptacles and a Material outlet with a removable before use lock on. This is only removed before squeezing the cartridge and may e.g. as a screw cap, Abreißverschluss or the like. Be executed. The material recordings are such Cartridges either side by side (side-by-side cartridge) or are as coaxial tubes (Coaxial cartridge). In both embodiments, the material outlet as Coaxial outlet are running. The one component is about a centric Pipe and the other component via an arranged around the centric tube annulus pressed. Such coaxial outlets are closed with closures that special Have sealing elements. By the sealing elements should be prevented that in the Cartridge stored components leak during storage or through premature Contact each other. So there must be a seal against the outside and a seal done inside.

There are already known cartridges in which the seal between the closure and a coaxial outlet by surface contact of an inner and / or outer tube of the Koaxialauslasses within suitable annular grooves of the closure or by a Wedge execution takes place. The seal is done at the front or side as Surface seal, laterally by a wedge design or by a combination of these Variants. In Figure 6 such seals are shown. When in the left illustration the embodiment shown in Figure 6, the seal is made on the front side and / or laterally over a surface seal. In the right-hand illustration of Figure 6 is a wedge design and in the middle representation of a combination of wedge and frontal seal shown. One Problem, such seals is that the wedge seal and the end face Seal is effective only in a predetermined axial position. Once the shutter is light is opened, the sealing effect can no longer be guaranteed. In general, must Therefore, the closure should be tightened to also have enough force on the sealing point exercise. In the area seal, the force is also distributed over a larger area, so that an additional high force must be expended to seal the closure. In the area seal is also with capillary effects and consequent Leakage to count. Consequently, the closure with the conventional Sealing elements are so strongly attracted to achieve the desired sealing effect, that for opening an additional auxiliary tool is sometimes required. It has also shown that in the known cartridges leaks again and again resulting in leakage of the components and blocking the outlets through Reaction of the components can result.

There are also already closures for cartridges with coaxial outlet, where the seal is achieved by an additional elastomeric insert. This solution, however, is expensive, as a made additional elastomeric part and mounted in the closure or in the elaborate 2K plastic injection technology must be produced.

The object of the invention is a multicomponent cartridge of the type mentioned to provide a simplified and improved seal.

This object is achieved by a multi-component cartridge with the features of Claim 1 solved. Advantageous embodiments and advantageous developments of Invention are the subject of the dependent claims.

In the cartridge according to the invention, the seal between the closure and the coaxial outlet via circumferential lateral sealing edges. These are on the outlet pipes the coaxial outlet and / or on the sealing webs or sealing elements of the closure formed. The seal thus takes place over a precisely defined and limited contact surface, so that results in a high surface pressure on a small area and thus a high Sealing pressure is enabled. Since the seal acts laterally, is an excessive tightening of Closure in case of a screw cap not required. Since the sealing edges to lateral attachment to the corresponding mating surfaces, is also without great axial tightening force allows a high sealing effect. If the closure is e.g. when Screw cap is executed, the seal is guaranteed even if the Closure is not completely screwed on. As long as the sealing edges on the abut corresponding mating surfaces, a seal is guaranteed.

Conveniently, the sealing edges are radially biased. This allows the Contact pressure can be increased. In a preferred embodiment are on the two sides both exhaust pipes provided this encompassing sealing webs. The sealing edges can do this be attached to the sealing webs, on the outlet pipes or both. But it can too only a one-sided seal suffice. The sealing edges can be at the ends of the sealing webs and / or outlet pipes attached or set back. To ensure a Seal can be sufficient for a sealing edge. But there may also be several sealing edges be provided. The sealing edge may e.g. be sharp-edged or can with strong or weak rounding. Also other suitable forms are possible. In addition to the side seal with the sealing edges can also have a frontal seal can be achieved, provided that the upper end faces of the outlet pipes for Attach system to suitable mating surfaces of the closure.

Figur 1

eine Side-by-Side-Kartusche mit einem Koaxialauslass im Längsschnitt;

Figur 2

den Kopfteil der in Figur 1 gezeigten Side-by-Side-Kartusche in einer Seitenansicht;

Figur 3

den Kopfteil der in Figur 1 gezeigten Side-by-Side-Kartusche mit einem Verschluss in einem vergrößerten Längsschnitt;

Figur 4

den oberen Teil einer Koaxialkartusche mit einem Koaxialauslass im Längsschnitt;

Figur 5

den Kopfteil der in Figur 4 gezeigten Koaxialkartusche mit einem Verschluss in einem vergrößerten Längsschnitt;

Figur 6

Beispiele bekannter Dichtungen zwischen dem Koaxialauslass und dem Verschluss einer Zweikomponentenkartusche;

Figur 7

Ausführungsbeispiele erfindungsgemäßer Dichtungen zwischen dem Koaxialauslass und dem Verschluss einer Zweikomponentenkartusche;

Figur 8

Beispiele von Dichtkantenausführungen an den Rohren des Koaxialauslasses;

Figur 9

Beispiele von Dichtkantenausführungen an den Dichtstegen des Verschlusses;

Figur 10

Beispiele von Dichtkantenausführungen mit mehreren Dichtkanten;

Figur 11

Ausführungsbeispiele mit einseitiger Dichtung;

Figur 12

Ausführungsbeispiele von Dichtkanten und

Figur 13

ein Ausführungsbeispiel einer zweiteiligen Koaxialkartusche mit einem Abreißverschluss.

Other features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings. Show it:

FIG. 1

a side-by-side cartridge with a coaxial outlet in longitudinal section;

FIG. 2

the head portion of the side-by-side cartridge shown in Figure 1 in a side view;

FIG. 3

the head part of the side-by-side cartridge shown in Figure 1 with a closure in an enlarged longitudinal section;

FIG. 4

the upper part of a coaxial cartridge with a Koaxialauslass in longitudinal section;

FIG. 5

the head part of the coaxial cartridge shown in Figure 4 with a closure in an enlarged longitudinal section;

FIG. 6

Examples of known seals between the coaxial outlet and the closure of a two-component cartridge;

FIG. 7

Embodiments of inventive seals between the coaxial outlet and the closure of a two-component cartridge;

FIG. 8

Examples of sealing edge designs on the tubes of the coaxial outlet;

FIG. 9

Examples of sealing edge designs on the sealing webs of the closure;

FIG. 10

Examples of sealing edge designs with multiple sealing edges;

FIG. 11

Embodiments with one-sided seal;

FIG. 12

Embodiments of sealing edges and

FIG. 13

an embodiment of a two-part coaxial cartridge with a zipper.

FIG. 1 shows a so-called side-by-side two-component cartridge. she consists of two parallel side by side (side-by-side) arranged hollow cylindrical housings. 1 and 2 and a coaxial outlet 3 with an outer outlet tube 4 and one in this concentrically arranged inner outlet pipe 5. Between the outer outlet pipe 4 and the inner outlet tube 5, an annular channel 6 is limited, which with the interior. 7 of the housing 1 is in communication. The inner outlet pipe 5 opens into the interior 8 of the housing 2. Thus, the materials located in the interiors 7 and 8 can still separated from each other via the outer outlet tube 4 and the inner outlet tube 5 of the Koaxialauslasses 3 are expressed.

As can be seen particularly from FIG. 2, a coaxial outlet 3 is provided on the outside External thread 9 formed, the attachment of a known and therefore not used static mixer is used. In that shown in Figures 1 to 3 Embodiment also serves the thread 9 for mounting a in Figure 3 shown closure 10, which is unscrewed until the actual use and prevents the components stored in the two-component cartridge during the Leakage or react by early contact with each other.

The closure 10 shown in Figure 3 is designed as a cap and contains its inner side to the external thread 9 of the coaxial outlet 3 matching internal thread 11 and annular circumferential sealing webs 12a, 12b, 13a, 13b, the annular grooves 14 and 15 for the outer outlet pipe 4 and the inner outlet pipe 5 limit. In the shown Embodiment is the inner outlet pipe 5 with respect to the outer outlet pipe. 5 upwards. Accordingly, the sealing webs 13a and 13b of the closure 10th arranged above the sealing webs 12a and 12b. This can also be done at Resealing the closure 10 makes contact between those in the cartridge components are better prevented. The design of the sealing webs and / or the inner or outer tube to ensure a good and reliable Seal will be explained in more detail below.

In Figure 4, a so-called two-component coaxial cartridge as another Embodiment shown. This e.g. Injection molding of plastic in one piece manufactured cartridge contains two coaxially arranged tubes 101 and 102 with different diameter, with the tube 102 having the smaller diameter is located within the tube 101 with the larger diameter. Between the outside Pipe 101 and the inner tube 102 is a radially outer annular space 107 and the inner Housing 102 an inner receiving space 108 limited. This cartridge also contains a coaxial outlet 103 having an externally threaded outer outlet tube 104 and a central inner outlet tube 105 coaxially disposed therein. There will be too between the outer outlet tube 104 and the inner outlet tube 105 an annular Channel 106 bounded, which communicates with the outer annulus 107. The inner Outlet pipe 105 opens into the inner receiving space 108th

Figure 5 shows a closure 110 for the cartridge shown in Figure 4, wherein this Closure 110 is constructed as the closure 10 shown in Figure 3. He also contains a male thread 9 of the Koaxialauslasses 3 matching internal thread 111 and annular circumferential sealing webs 112a, 112b, 113a, 113b, the annular grooves 114 and 115 for delimit the outer outlet tube 104 and the inner outlet tube 105.

The design of the seal between the closures and the Koaxialauslässen the respective cartridges will be described below with reference to several in the figures 7 to 12 illustrated embodiments explained. In these figures, by way of example only the circled in Figure 3 upper part of the inner outlet pipe 5 of the shown in Figure 1 Cartridge with the associated sealing webs 13a and 13b of the closure 10 is shown. It It should be noted, however, that the illustrated there and explained further below Embodiments in a corresponding manner for the outlet pipe 4 and / or the associated sealing webs 12a, 12b and the other embodiments of cartridges apply or may apply.

In the embodiments shown in Figure 7 are on the outside of the outlet tube 5 and on the inside of the radially inner sealing ridge 13b laterally projecting and in Circumferential circumferential sealing edges 16, 17 for engagement with the respective counterpart intended. On the outside of the outlet pipe 5 is a sealing edge 16 for engagement with the Inside the radially outer sealing ridge 13a and on the inside of the radially inner Seal ridge 13b a sealing edge 17 for engagement with the outside of the outlet pipe. 5 arranged. But the sealing edge 16 can also on the inside of the outlet tube 5 and the Sealing edge 17 may be provided on the inside of the radially outer sealing ridge 13a. Also on Both sides of the outlet pipe 5 and at both sealing webs 13a and 13b sealing edges to be available. In the embodiment shown in the left illustration is a lateral Seal achieved, whereas in the embodiment shown on the right also an additional frontal seal is possible. The sealing ridge 13b is in the illustrated embodiment bent inward so that the sealing edges 16 and 17 under bias to the plant reach.

In Figure 8, various embodiments of the inner and / or outer Outlet pipe provided sealing edges on the example of the inner outlet pipe 5 shown. As From this figure it can be seen, the sealing edge 16 on the inner and / or outer side of the Outlet tube 5 may be provided. The outlet pipe also needs according to the left-hand illustration have no sealing edge, provided at least at one of the associated sealing webs 13a, 13b a sealing edge 17 is provided. The lateral sealing edges 16 can at the upper end of the Outlet tube or arranged offset down. On both sides angeorndete Sealing edges 16 may be offset from each other in the axial direction of the outlet pipe or - as in the right-hand illustration shown - be arranged opposite each other.

As is apparent from the figure 9, the sealing edge 17 of the closure at the radial outer sealing ridge 13a, on the radially inner sealing ridge 13b or on both sealing ridges 13a, 13b be present. If at least one sealing edge 16 at the associated outlet pipe is provided, needs on the sealing webs and no closure-side sealing edge be present, as shown in the two left representations.

Two exemplary embodiments are shown in FIG one behind the other sealing edges 16 and 17 on the outlet pipe 5 and sealing ridge 13b are arranged.

FIG. 11 shows two exemplary embodiments with only one sealing web 13a or 13b. In these embodiments, according to the left illustration on the outlet pipe 5 is a lateral Sealing edge 16 for engagement with the inside of the sealing ridge 13a and in the right-hand illustration on the inside of the sealing ridge 13b, a sealing edge 17 for engagement with the outside of the Outlet tube 5 is provided.

Various embodiments of the sealing edge 16 or 17 are in Figure 12 at the example of Sealing edge 16 on the outlet pipe 5 shown. This can e.g. one in the left illustration shown small curve, a large rounding shown in the middle illustration or a have sharp edge shown in the right-hand illustration.

FIG. 13 shows a further exemplary embodiment of a coaxial cartridge. This contains an outer cartridge housing 201 with a slimmer outer formed above Outlet tube 204 and a within the outer cartridge housing 201 to this concentrically arranged inner cartridge housing 202, which is within the Outlet tube 204 arranged central inner outlet tube 205 includes. The outer Outlet tube 204 and the inner outlet tube 205 form a coaxial outlet 203, the is formed according to the embodiment of Figure 4. Again, between the outer outlet tube 204 and the inner outlet tube 205 an annular channel 206th for expressing the component located in the outer cartridge housing 201, while the component located in the inner cartridge housing 202 over the inner Outlet tube 205 is expressed. In the end region of the channel 206 are several along the circumference of the outer outlet tube 204 distributed projections 220, in which an inner shoulder 221 of the inner outlet tube 205 is supported, whereby the position of the both cartridge housing 201 and 202 is fixed in the axial direction. On the outside of the outer outlet tube 204 is a thread 209 for screwing on a static mixer formed.

In this embodiment, the closure is as a molded closure lid 210 executed. Here, only a seal of the inner outlet tube 205 is required. Of the Closure lid also includes sealing webs 213a and 213b, which has an annular groove for the inner Limit outlet pipe 205. Also there, the seal between the cap and the inner outlet pipe 205 according to the above-described Be executed embodiments. The outer outlet tube 204 is integral with the Closure lid 210 connected, wherein the closure lid 201 by tearing or ever after execution can also be opened by cutting.

The invention is not limited to the embodiments described above. Thus, in particular any combinations of the described in detail and in the Figures illustrated seal embodiments are provided.

Claims (10)

A multicomponent cartridge, in particular a two-component cartridge, which has a coaxial outlet (3; 103; 203) with an outer outlet tube (4; 104; 204) and an inner outlet tube (5; 105; 205) concentric therewith, one with the coaxial outlet (3; ) and a seal having at least one sealing web (12a, 12b, 13a, 13b, 213a, 213b) arranged on the closure (10, 110, 210) for the Attachment to the inner and / or outer outlet pipe (4; 104; 204; 5; 105; 205), characterized in that the seal comprises at least one laterally projecting sealing edge (16, 17) on the inner and / or outer side the inner and / or outer outlet tube (4; 104; 204; 5; 105; 205) of the coxial outlet (3; 103; 203) and / or on the outer and / or inner side of the inner and / or outer outlet tube (4; ; 104; 204; 5; 105; 205) facing side of the at least one sealing ridge (12a, 12b, 13a, 13b; 112a, 112b, 113a, 113b, 213a, 213b) is arranged circumferentially. Multi-component cartridge according to Claim 1, characterized in that the closure (10; 110; 210) has at least one sealing web (12a, 12b, 13a, 13b; 112a, 112b, 113a, 113b; 213a, 213b) with one or more sealing edges (17). for the outer and / or inner tube () contains. A multi-component cartridge according to claim 1, characterized in that the closure (10; 110; 210) has in each case two an annular groove (14, 15; 114, 115) for the inner and / or outer outlet tube (4; 104; 204; 5; 105; 205) limiting sealing webs (12a, 12b, 13a, 13b, 112a, 112b, 113a, 113b, 213a, 213b) contains. Multi-component cartridge according to Claim 3, characterized in that one or more sealing edges (12a, 12b, 13a, 13b, 213a, 213b) bordering the annular groove (14, 15; 114, 115) 16) are arranged. Multi-component cartridge according to one of claims 1 to 4, characterized in that the seal comprises one or more peripheral sealing edges (16) on the inner and / or outer outlet tube (4; 104; 204; 5; 105; 205). Multi-component cartridge according to one of claims 1 to 5, characterized in that the at least one sealing edge (16, 17) is sharp-edged. Multi-component cartridge according to one of claims 1 to 5, characterized in that the at least one sealing edge (16, 17) is rounded. Multi-component cartridge according to one of claims 1 to 7, characterized in that the at least one sealing edge (16, 17) is radially biased. Multi-component cartridge according to one of claims 1 to 8, characterized in that the closure (10, 110) via a screw connection (9, 11, 109, 111) with the coaxial outlet (3; 103) is connected. Multi-component cartridge according to one of Claims 1 to 8, characterized in that the closure (210) is connected to the coaxial outlet (203) via a tear-off connection.

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