EP2163490B1 - Cassette for multi-component masses - Google Patents

Abstract

The cartridge (21) has a hollow-cylindrical receiving member (22) comprising a receiving space for a component of a multi-component mass, and other hollow-cylindrical receiving member (27) arranged in parallel to the former receiving member and having a receiving space for another component of the multi-component mass. The former receiving space is larger than the latter receiving space. The former receiving member has low elasticity in a direction transverse to a longitudinal extent (L1) than the latter receiving member.

Description

The invention relates to a cassette for multicomponent masses having a first receiving body, which has a receiving space for at least one component of the multicomponent mass, and having at least one further receiving body arranged parallel to the first receiving body, the receiving space for at least one further component of the multicomponent mass wherein the receiving space of the first receiving body is larger than the receiving space of the at least one further receiving body.

The components of a multicomponent mass, such. As a multi-component mortar, sealant, foam or adhesive, are stored separately from each other until the application of the mass. With a suitable squeezing device, the components are usually applied via a mixing element, in which the components are mixed to the ready-to-use mass. The components of the multicomponent mass are provided to the user in the appropriate relationship to each other. For a two-part mass, the ratio between the two components can vary from 1: 1 to 10: 1. Since the receiving body of the cassette are preferably all the same, the ratio of the components of the multicomponent mass is ensured by appropriate ratios of the cross sections of the receiving spaces of the receiving body to each other. Essential for the quality and thus for the safety of use of multicomponent mass is their mixing in the correct ratio of the components to each other.

For storage and for insertion into a receptacle of a press-out device of the multicomponent mass, cartridges are known which have a cassette in whose receiving chambers the components of the multicomponent mass are arranged in the corresponding relationship to one another.

The arrangement of the receiving body of a generic cassette to each other is also referred to as a "side-by-side" - arrangement.

A cassette having the features of the preamble of claim 1 is known from DE-U-297 06 235 known.

To use such cartridges or cassettes several times, it is z. B. from the DE 91 00 054 U1 It is known to pack the components of the multicomponent mass in separate film or tubular bags. By applying pressure to the advantageously previously opened bag, for example via pistons as a Auspressmittel a Auspressgerätes, the components are applied, while the bags folded continuously, which can then be disposed of separately. To direct the squeezing force on the bags substantially in the squeezing direction, these sacks are placed in the cassette.

A generic cassette can be made available to the user as a single part or be part of a Auspressgeräts. The components are inserted or inserted into the receiving spaces of the cassette for dispensing the multicomponent mass.

Next is from the WO 98/44860 A1 for storage and for insertion into a receptacle of a squeezing device of the multicomponent mass a film container with a cassette known. The film package comprises two film bags for each one component of the multicomponent mass, which are fixed to a head part with a discharge opening and are each surrounded by a hollow cylindrical receiving body of the cassette.

During the advancing movement of the expelling means, not all of the force is converted into the delivered volume of the components. A certain proportion of the pressure force is deflected due to the elasticities of the receiving body. After completion of the feed, the built-up voltage relieved, leading in the worst case to a running after the subsidized mass until the system is depressurized or the flow limit of the mass or its components is below.

In the case of a cassette in which the receiving space of the first receiving body is larger than the receiving space of the at least one further receiving body, the component in the first receiving body tends to run after it. This means that the required mixing ratio of the component is not guaranteed and thus the desired chemical reaction no longer takes place in the required or in a significantly disturbed stoichiometry.

To avoid this problem is in the WO 89/05189 A1 proposed, in each case one component of the multicomponent mass in each other in a cassette split up opposite receiving bodies. Such a cassette thus has for a two-component mass at least four mutually parallel receiving body for both components.

A disadvantage of the known solution is that the components can be dispensed only with a specially trained on this embodiment of the cassette ejection device or trained extrusion.

The object of the invention is to provide a cassette for multicomponent masses, which allows over the entire Auspressvorgang a uniform mixing ratio of the components and with conventional Auspressgeräten with z. B. is two piston rods ausbringbar.

The object is solved by the features of the independent claim. Advantageous developments are set forth in the subclaims.

According to the invention, the first receiving body is designed with respect to the at least one further receiving body such that it has a lower elasticity than the at least one further receiving body at least in a direction transverse to its longitudinal extension.

As a result, the first receiving body is stiffer or has a higher rigidity than the at least one further receiving body, with the result that, compared with the at least one further receiving body, it is less transverse in one direction, ie. H. radially or vertically, to its longitudinal extent, which corresponds to the direction of pressurization by the Auspressmittel the squeezing unit can expand. In this case, the follow-up volume is throttled from the first receiving body, whereby the mixing ratio in the wake of the components no longer shifts or only after a long time in the direction of only one component. Advantageously, the first receiving body is formed such that the tracking behavior of the ejected from the first receiving body component corresponds to the discharged from the at least one other receiving body component.

Preferably, at least one, extending in the longitudinal extent of the receiving body material weakening is provided on the wall of the at least one further receiving body. The material weakening ensures that the first receiving body has a lower elasticity than the at least one further receiving body, since the at least one further receiving body deforms under pressure more easily in the radial direction to the longitudinal axis of the at least one further receiving body.

The material weakening preferably comprises a plurality of axial grooves arranged on the inner wall of the at least one further receiving body and open to the receiving space of the at least one further receiving body. The axial grooves can be easily formed in the at least one further receiving body and ensure advantageous deformability in the radial direction of the at least one other receiving body under pressure. Advantageously, the plurality of axial grooves are provided uniformly distributed along the inner circumference of the receiving space of the at least one further receiving body, which ensures a particularly advantageous deformability in the radial direction of the at least one other receiving body under pressure.

Preferably, the wall thickness of the first receiving body is greater than the wall thickness of the at least one further receiving body, with which the first receiving body has a lower elasticity than the at least one further receiving body and the cassette is easy to produce.

Preferably, the first receiving body and the at least one further receiving body made of different materials. The materials are selected from one or more groups of substances, e.g. B. selected from the group of plastics or metals, so that the at least two receiving body have corresponding elasticity properties. For example, the receiving body of the cartridge are made in a spray / casting process of plastics. For example, a polypropylene (PP) is used for the first receiving body with the larger receiving space, wherein a polyethylene (PE) is used for the at least one further receiving body with the smaller receiving space. Furthermore, the entire cassette may also be made of a material, such as polyamide (PA), wherein the material variation of the receiving body, for example by means of the use of aromatic or non-aromatic polyamides. Further, at least one of the receiving body with reinforcements, such. As a metal mesh or glass fibers, be provided in order to achieve the desired elastic properties of the receiving body to each other ..

In an alternative embodiment, for example, the receiving body made of metals or metal hybrids, wherein the receiving body correspondingly have different elastic properties. In a further embodiment, for example, the first receiving body made of a metal and the at least one further receiving body made of a plastic. In all of the aforementioned embodiments, the receiving bodies are connectable to each other or are connected together in the manufacture of the cassette.

Preferably, the material of the first receiving body has a higher modulus of elasticity than the material of the at least one further receiving body, with which the first receiving body has a lower elasticity than the at least one further receiving body and the cassette is easy to produce.

Preferably protruding reinforcing elements are provided on the first receiving body from the outside thereof, whereby the first receiving body has a lower elasticity than the at least one further receiving body and the cassette is easy to produce.

The reinforcing elements preferably comprise ribs which can be easily formed with the first receiving body, in particular in a casting process or an injection / casting process.

Preferably, the reinforcing elements are provided along the entire longitudinal extent of the first receiving body. Advantageously, the reinforcing elements extend over the entire longitudinal extent of the first receiving body. Further advantageously, a plurality of reinforcing elements are advantageously arranged uniformly distributed on the outside of the first receiving body.

Preferably, the reinforcing elements are provided transversely to the longitudinal extent of the first receiving body, radially encircling. Advantageously, the reinforcing elements extend over the entire circumference of the first receiving body. Advantageously, a plurality of reinforcing elements spaced from each other over the longitudinal extent of the first receiving body advantageously distributed evenly arranged on the outside thereof.

Fig. 1

Ein erstes Ausführungsbeispiel eines Foliengebindes mit Kassette im Grundriss;

Fig. 2

einen Schnitt entlang Linie II-II in Fig. 1 in vergrösserter Darstellung;

Fig. 3

einen Schnitt analog Fig. 2 eines zweiten Ausführungsbeispiels;

Fig. 4

einen Schnitt analog Fig. 2 eines dritten Ausführungsbeispiels;

Fig. 5

ein viertes Ausführungsbeispiel einer Kassette im Grundriss; und

Fig. 6

einen Schnitt entlang Linie VI-VI in Fig. 5 in vergrösserter Darstellung.

The invention will be explained in more detail below with reference to embodiments. Show it:

Fig. 1

A first embodiment of a film package with cassette in plan view;

Fig. 2

a section along line II-II in Fig. 1 in an enlarged view;

Fig. 3

a section analog Fig. 2 a second embodiment;

Fig. 4

a section analog Fig. 2 a third embodiment;

Fig. 5

a fourth embodiment of a cassette in plan view; and

Fig. 6

a section along line VI-VI in Fig. 5 in an enlarged view.

Basically, the same parts are provided with the same reference numerals in the figures.

That in the Figures 1 and 2 shown film bundles 11 comprises for a two-component mass, a cassette 21 and two film bags 12 and 17, which are fixed to a head portion 14 with an outlet 15 for the packaged in the film bag 12 and 17 components 13 and 18 of the bicomponent mass. The foil bags 12 and 17 are inserted into the cassette 21 before the start of the squeezing operation for dispensing the components 13 and 18.

The cassette 21 may also be provided as a separate part to the user or may be part of a squeezing device for dispensing the components 13 and 18 of the multi-component mass.

The cassette 21 has a first hollow cylindrical receiving body 22, which has a receiving space 23 with a substantially circular cross section for a resin as component 13 of the multicomponent mass, and a further, second hollow cylindrical receiving body 27, which has a receiving space 28 with a substantially circular Cross section for a hardener as component 18 of the multi-component mass. The second receiving body 27 is arranged parallel to the first receiving body 22 and has the same longitudinal extent L1 as the first receiving body 22. The first receiving body 22 has a wall thickness W1, which substantially corresponds to the wall thickness W2 of the second receiving body 27.

The components 13 and 18 have a ratio of 3: 1. The receiving space 23 of the first receiving body 22 is larger than the receiving space 28 of the further receiving body 27. According to the ratio of the components 13 and 18 to each other, the cross-sectional area of the receiving space 23 is three times the cross-sectional area of the receiving space 28 of the second receiving body 27th

The film bags 12 and 17 are matched to the cassette 21, so that the foil bags 12 and 17 in the inserted state have only a small annular gap to the inner wall 24 and 30 of the corresponding receiving space 23 and 27 of the cassette 21.

The first receiving body 22 is connected via connecting webs 25 to the second receiving body 27 to the one-piece cassette 21. The cassette 21 is made of a plastic in an injection / casting process.

The first receiving body 22 is formed with respect to the second receiving body 27 such that it has a lower elasticity than the second receiving body 27. For this purpose, several, along the longitudinal extent of the second receiving body 27 extending material weakenings are provided. The material weakenings are formed as arranged on the inner wall 30 of the second receiving body 27 Axialnuten 29 which are open to its receiving space 28.

In the second embodiment of a cassette 31 for multi-component masses, as shown in the FIG. 3 is shown, this also has a first receiving body 32 with a receiving space 33 and a second receiving body 37 with a receiving space 38. The first receiving body 32 has a wall thickness W3, which in this example is twice as large as the wall thickness W4 of the further receiving body 37. By this measure, the first receiving body 32 has a lower elasticity than the second receiving body 37.

FIG. 4 shows a third embodiment of a cartridge 41 for multi-component masses, which has a first receiving body 42 having a receiving space 33 and a second receiving body 47 having a receiving space 48. The cassette 41 is made in this example of polyamide (PA), wherein only the first receiving body 42 is reinforced with glass fibers. As a result of this measure, the first receiving body 42 has a lower elasticity than the second receiving body 47.

In the FIGS. 5 and 6 shows a fourth embodiment of a cassette 51 for multi-component masses, which has a first receiving body 52 having a receiving space 53 and a second receiving body 57 having a receiving space 58. From the outside 54 of the first receiving body 52 protrude a plurality of ribs formed as reinforcing elements 55 and 56 from. The reinforcing elements 55 extend over the entire longitudinal extension L2 of the first receiving body 52. The reinforcing elements 56 extend transversely to the longitudinal extent L2 of the first receiving body 52, radially encircling around its entire circumference. The height H1 of the reinforcing elements 55 over the outer side 54 of the first receiving body 52 in this example corresponds to the height H2 of the reinforcing elements 56 over the outer side 54 of the first receiving body 52. Further, in this example, all the reinforcing elements 55 and all the reinforcing elements 56 in cross-section substantially each formed the same, which ensures a uniform stiffening of the first receiving body 52.

The individually set forth in the embodiments, various measures that lead to a lower elasticity of the first receiving body 22, 32, 42 or 52 relative to the second receiving body 27, 37, 47 or 57, can also be combined in a cassette to the elasticity of the Adjust first receiving body accordingly. Several or all of the described measures can be implemented in a cassette.

Claims (10)

1. Cartridge for multi component masses having a first receiving member (22; 32; 42; 52) that has a receiving chamber (23; 33; 43; 53) for at least one component (13) of the multi component mass, and having at least one other receiving member (27; 37; 47; 57) that is arranged parallel to the first receiving member (22; 32; 42; 52) and has a receiving chamber (28; 38; 48; 58) for at least one other component (18) of the multi component mass, wherein the receiving chamber (23; 33; 43; 53) of the first receiving member (22; 32; 42; 52) is larger than the receiving chamber (28; 38; 48; 58) of the at least one other receiving member (27; 37; 47; 57) characterised in that the first receiving member (22; 32; 42; 52) is so formed relatively to the at least one other receiving member (27; 37; 47; 57) that it has a lower elasticity in at least one direction transversely to its longitudinal extent (L1; L2) than the at least one other receiving member (27, 37, 47, 57).
2. Cartridge according to claim 1, characterised in that at least one material weakening is provided in the wall of the at least one other receiving member (27), the material weakening extending along the longitudinal extent (L1) of the receiving member (22)..
3. Cartridge according to claim 2, characterised in that the material weakening comprises a plurality of axial grooves (29) in the inner wall (30) of the at least one other receiving member (27) which are open to the receiving chamber (28) of the at least one other receiving member (27).
4. Cartridge according to one of claims 1 to 3, characterised in that the wall thickness (W3) of the first receiving member (32) is greater than the wall thickness (W4) of the at least one other receiving member (37).
5. Cartridge according to one of claims 1 to 4, characterised in that the first receiving member (42) and the at least one other receiving member (47) are made of different materials.
6. Cartridge according to claim 5, characterised in that the material of the first receiving member (42) has a greater modulus of elasticity than the material of the at least one other receiving member (47).
7. Cartridge according to one of claims 1 to 6, characterised in that reinforcing elements (55, 56) are provided on the first receiving member (52) protruding from its outer surface (54).
8. Cartridge according to claim 7, characterised in that the reinforcing elements (55, 56) comprise ribs.
9. Cartridge according to claim 7 or 8, characterised in that the reinforcing elements (55) are provided along the entire longitudinal extent (L2) of the first receiving member (52).
10. Cartridge according to one of claims 7 to 9, characterised in that the reinforcing elements (56) are provided radially circumferentially transversely to the longitudinal extent (L2) of the first receiving member (52).

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