Merging, mixing device and mixing tube for a multi-bag cartridge press

Abstract

A merging device (10) for a cartridge press (1) is described, wherein a mixing device (12) is arranged downstream of the merging device (10), with a cavity (11) of the merging device (10) in a fluid connection and has an outlet (35) configured to discharge the substances from the cavity (11) of the merging device (10), wherein the mixing device (12) is configured to mix a substance from a first foil bag (6) and a substance from a second foil bag (7) together.

Description

[0001] The invention relates to a merging device, a mixing device and a mixing tube for a cartridge press with several foil bags, each containing a flowable or liquid substance.

[0002] It is an object of the present invention to provide a merging device, a mixing device and a mixing tube for a cartridge press with several foil bags, which can improve the effect of the flowable or liquid substance.

[0003] This problem is solved by the items with the features according to the independent claims. Further embodiments are defined in the dependent claims.

[0004] According to a first aspect of the invention, a assemblage for a cartridge gun is provided, wherein the cartridge gun comprises: a handle having an actuating element; a tray attached to the handle, preferably a half-shell; a cartridge received in the tray, configured to receive at least one first foil bag and one second foil bag, each containing a flowable or liquid substance; at least two pistons, each configured to press against a first end of a corresponding foil bag received in the cartridge when the actuating element is actuated, or a piston configured to press against the first ends of the foil bags received in the cartridge when the actuating element is actuated.The merging unit is configured to be attached to a downstream end of the cartridge and, when the actuating element is pressed, is pressed against the respective second ends of the corresponding foil pouches held in the cartridge. The merging unit is further configured to open a foil at the respective second ends of the foil pouches when these second ends are pressed against the merging unit, allowing the substances from the foil pouches to enter a cavity of the merging unit. The cartridge gun further comprises a mixing device located downstream of the merging unit, which is in fluid communication with the merging cavity and has an outlet configured to discharge the substances from the merging cavity.The mixing device is configured to mix the substance from the first foil bag and the substance from the second foil bag together.

[0005] According to a second aspect of the invention, a mixing device for a cartridge gun is provided, wherein the cartridge gun comprises: a handle having an actuating element; a tray, preferably a half-shell, attached to the handle; a cartridge received in the tray, configured to receive at least one first foil bag and one second foil bag, each containing a flowable or liquid substance; at least two pistons (8, 9), each configured to press against a first end of a corresponding foil bag received in the cartridge when the actuating element is actuated, or one piston configured to press against the first ends of the foil bags received in the cartridge when the actuating element is actuated; a merging element attached to a downstream end of the cartridge and configured toagainst the respective second ends of the corresponding foil bags held in the cartridge when the actuating element is actuated, wherein the merging is further configured to open a film at the respective second ends of the foil bags when the respective second ends of the corresponding foil bags held in the cartridge are pressed against the merging, so that the substances from the foil bags enter a cavity of the merging. The mixing device is configured to be arranged downstream of the merging, to be in fluid contact with the cavity of the merging, and wherein the mixing device has an outlet configured to discharge the substances from the cavity of the merging. The mixing device has at least one mixing element configured toThe mixing element is designed to mix the substance in the first foil bag with the substance in the second foil bag. The mixing element has an inner diameter of between 15 and 25 mm, preferably between 16 and 22 mm, and more preferably between 17 and 19 mm. The mixing element has an outer diameter of between 16 and 28 mm, preferably between 18 and 20 mm, and more preferably between 19 and 20 mm.

[0006] According to a third aspect of the invention, a mixing tube is provided which is configured to accommodate the mixing device.

[0007] The features and dimensions of the assembly, the foil bags, the mixing device and the associated mixing tube allow for the processing of highly viscous adhesives, which generate correspondingly high forces.

[0008] Further exemplary implementation examples are described below.

[0009] According to one embodiment, the outer diameter of the second foil bag is between 50 and 80 mm, preferably between 59 and 70 mm, more preferably between 59 and 61 mm; and the outer diameter of the first foil bag is between 10 and 30 mm, preferably between 15 and 25 mm, more preferably between 18 and 21 mm.

[0010] According to one embodiment, the merging has at least one inlet, preferably one inlet each for a corresponding foil bag, configured to be coupled to the second ends of the corresponding foil bags contained in the cartridge, and a continuation configured to release the substances from the cavity of the merging.

[0011] According to one embodiment, piercing devices are provided at the respective inlet of the merging unit, which are configured to pierce the corresponding foil bags when the actuating element is actuated and the respective second ends of the corresponding foil bags contained in the cartridge are pressed against the merging unit.

[0012] According to one embodiment, the merging is configured to exclude the substance of the first foil bag and the substance of the second foil bag from the continuation in such a way that the substance of the first foil bag is excluded substantially in the middle within the substance of the second foil bag.

[0013] According to one embodiment, the joining is configured to be pressed against the downstream end of the cartridge, preferably by means of a friction- or form-fit engagement device.

[0014] According to one embodiment, the mixing element has a plurality of ribs, each of which has a surface facing the merging process, wherein the surfaces of adjacent ribs are not parallel to each other.

[0015] According to one embodiment, the space between the ribs of a mixing element has a horizontal width of between 1.5 and 3 mm, preferably between 2 and 2.5 mm, more preferably between 2.2 and 2.3 mm.

[0016] According to one embodiment, the mixing device has a plurality of mixing elements arranged one above the other or stacked, each having a ring-shaped frame with ribs attached therein.

[0017] According to one embodiment, in a cross-section through the mixing elements arranged one above the other or stacked, the ribs of adjacent mixing elements are arranged in an X-shape.

[0018] According to one embodiment, the mixing device has a majority of identical mixing elements arranged one above the other or stacked, whereby adjacent mixing elements can be arranged in the mixing device in a mirror image of each other.

[0019] According to one embodiment, the mixing tube has an outlet and an inlet configured to be connected to the continuation of the merging in a fluid connection, wherein the mixing device can be arranged in the mixing tube at the inlet of the mixing tube.

[0020] According to one embodiment, the mixing tube is configured to be screwed onto the junction or to be plugged into the continuation of the junction using a bayonet fitting.

[0021] Within the scope of this application, a "cartridge gun" can be understood to mean, in particular, a cartridge gun, especially for two-component adhesives, which has one cartridge for the resin and one for the hardener. Both components are combined in a specific ratio and then mixed in a mixing device, which also dispenses the adhesive onto a surface. The two foil pouches and the combining unit can form a single component and be simultaneously connected by a special mixing device.

[0022] Within the scope of the present application, a "foil bag" can be understood in particular to mean a tubular bag which has been sealed at both ends after the substance has been filled in.

[0023] Exemplary embodiments of the present invention are described in detail below with reference to the following figures. Figure 1shows a side view of components of a cartridge press according to an exemplary embodiment of the invention. Figure 2 shows a side view of the cartridge press of the Figure 1 . Figure 3 shows a side view of a cartridge with inserted foil bags, a merging mechanism and a mixing tube of the cartridge press. Figure 1 . Figure 4 shows views of a merger of the cartridge press of the Figure 1 . Figure 5 shows views of a mixing tube of the cartridge press of the Figure 1 . Figure 6 shows views of a mixing device of the cartridge press of the Figure 1 .

[0024] Identical or similar components in different figures are provided with the same reference numerals.

[0025] Figure 1 shows a side view of components of a cartridge press 1 according to an exemplary embodiment of the invention; Figure 2shows a side view of cartridge press 1 of the Figure 1 and Figure 3 shows a side view of a cartridge 5 with inserted foil bags 6, 7, a merging unit 10 and a mixing tube 17 of the cartridge press 1 of the Figure 1 .

[0026] The cartridge gun 1 has a handle 2, which has an actuating element 3, a shell 4, preferably a half-shell, attached to the handle 2, a cartridge 5 received in the shell 4, which is configured to receive two foil bags 6, 7, each containing a flowable or liquid substance, two pistons 8, 9, each configured to press against a first end of a corresponding foil bag 6, 7 received in the cartridge 5 when the actuating element 3 is actuated, a merging 10, which is attached to a downstream end of the cartridge 5 and is pressed against the respective second ends of the corresponding foil bags 6, 7 received in the cartridge 5 when the actuating element 3 is actuated.The merging unit 10 is configured to open a film at the respective second ends of the film bags 6, 7 when the respective second ends of the corresponding film bags 6, 7, contained in the cartridge 5, are pressed against the merging unit 10, so that the substances from the film bags 6, 7 enter a cavity 11 of the merging unit 10. The tray 4 is designed to accommodate the cartridge 5 together with the merging unit 10 attached to it. The tray 4 has a retaining wall 31 which prevents the merging unit 10 from detaching from the cartridge 5 when the actuating element 3 is actuated.

[0027] In the exemplary embodiment of the Figure 1The cartridge 5 is a reusable double-tube cartridge, preferably made of aluminum, configured to hold two of the foil bags 6, 7. Exactly two pistons 8, 9 are provided, each configured to press against a first end of one of the corresponding foil bags 6, 7 held in the cartridge 5 when the actuating element 3 is actuated.

[0028] Figure 4 shows views of the merging of 10 cartridge press 1 of the Figure 1The merging unit 10 has at least one inlet 20, 30, in this case two inlets 20 and 30, which are coupled to the second ends of the corresponding foil bags 6, 7 contained in the cartridge, and a continuation 21 configured to discharge the substances from the cavity 11 of the merging unit 10. Piercers 22 are provided at the inlets 20, 30 of the merging unit 10, configured to pierce the corresponding foil bags 6, 7 when the actuating element 3 is actuated and the respective second ends of the corresponding foil bags 6, 7 contained in the cartridge 5 are pressed against the merging unit 10. This eliminates the need for manual cutting of the foil bags 6, 7.

[0029] The merging unit 10 is configured to discharge the substance from the first foil bag 6 and the substance from the second foil bag 7 from the extension 21 such that the substance from the first foil bag 6 is discharged substantially centrally within the substance from the second foil bag 7. For this purpose, a first channel 33, from which the substance from the first foil bag 6 exits, and a second channel 32, from which the substance from the second foil bag 7 exits, are provided, the second channel 32 at least partially enclosing the first channel 33. Thus, a mass flow of the substance from the first foil bag 6 is at least partially contained within a mass flow of the substance from the second foil bag 7. The merging unit 10 is pressed against the downstream end of the cartridge 5, preferably by means of a friction-fit or form-fit engagement device 23.

[0030] Figure 5shows views of the mixing tube 17 of the cartridge press 1 of the Figure 1 The mixing tube 17 has an outlet 18 and an inlet 19, which is connected to the extension 21 of the junction 10 via a fluid connection, with the mixing device 12 being arranged in the mixing tube 17 near the inlet 19. The mixing tube 17 is screwed to the junction 10 or inserted into the extension 21 of the junction 10 by means of a bayonet fitting. In the illustrated embodiment, an internal thread is provided on the inlet 19 of the mixing tube 17, into which an external thread is screwed, which is provided on the extension 21 of the junction 10. After the mixing device 12 has been inserted into the mixing tube 17 near the inlet 19, the mixing tube 17 can be screwed onto the extension 21.

[0031] Figure 6 shows views of a mixing device 12 of the cartridge press 1 of the Figure 1The mixing device 12 is arranged downstream of the merging unit 10 in the mixing tube 17 and is in fluid connection with the cavity 11 of the merging unit 10. The mixing device 12 has an outlet 35 configured to discharge the substances from the cavity 11 of the merging unit 10. The mixing device 12 has at least one mixing element 13 configured to mix the substance from the first foil bag 6 and the substance from the second foil bag 7 together.

[0032] The at least one mixing element 13 has a plurality of ribs 14, each of which has a surface 15 facing the merging point 10, wherein the surfaces 15 of adjacent ribs 14 are not parallel to each other. The ribs 14 can be inclined at an angle between 30° and 60° with respect to a base surface of the mixing element 13. Preferably, the angle is approximately 45°. A gap is provided between each of the ribs 14 through which the substances can pass. Both the ribs 14 and the gap can have a horizontal width between 1.5 and 3 mm. The number of ribs 14 can be between 2 and 6. The height of the mixing element 13 can be between 3 and 6 mm. The mixing element 13 can have a transverse rib 36 that intersects the ribs 14, preferably at an angle of 90°. The mixing element 13 can have a flattening 37 on its lateral surface.A complementary surface can be provided in the mixing tube 17 so that the mixing element 13 can be inserted in the mixing tube 17 with a defined and fixed orientation. The mixing device 12 has a plurality of mixing elements 13 arranged one above the other or stacked, each of which has the annular frame 16 with the ribs 14 attached therein. In a cross-section through the mixing elements 13 arranged one above the other or stacked, the ribs 14 of adjacent mixing elements 13 are arranged in a substantially X-shape. If more than two of the mixing elements 13 are used as in the illustrated embodiment, the substances pass through a substantially zigzag or serpentine path. The number of mixing elements 13 is preferably between two and four. In the cross-section of the... Figure 4 The ribs 14 form a grid-like arrangement.

[0033] In the illustrated embodiment, the longitudinal directions of the ribs 14 run parallel to each other. However, it is possible to rotate the mixing elements 13 relative to each other so that the longitudinal directions of the ribs 14 of different mixing elements 13 do not run parallel to each other.

[0034] The mixing device 12 comprises a plurality of identical mixing elements 13 arranged one above the other or stacked, with adjacent mixing elements 13 being arranged in a mirror image of each other within the mixing device 12. The plane of the mirror image can be perpendicular to the flow direction of the substances. By using a single type of mixing element 13, manufacturing costs can be minimized.

[0035] The operation of the cartridge gun 1 is as follows. The cartridge 5, preferably reusable, is fitted with the pistons 8, 9. The foil pouches 6, 7 are inserted into the cartridge 5, and the connecting piece 10 is attached (see Figure 3 Now the loaded cartridge 5, along with the assembling unit 10 and the foil bags 6 and 7, can be inserted into the tray 4. The mixing tube 17, with the mixing device 12 inserted therein, is screwed onto the extension 21, and the actuating element 3 is activated to begin application. When the foil bags 6 and 7 are empty, the cartridge 5 is removed from the tray 4, and the assembling unit 10 is removed from the cartridge 5, leaving the empty foil bags 6 and 7 in the assembling unit 10.

[0036] It should also be noted that "having" does not exclude any other elements or steps, and "a" or "an" does not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference numerals in the claims are not to be considered as limitations.

Claims

1. Assembly (10) for a cartridge gun (1), wherein the cartridge gun (1) comprises: a handle (2) having an actuating element (3); a tray (4), preferably a half-shell, attached to the handle (2); a cartridge (5) received in the tray (4), configured to receive at least one first foil bag (6) and one second foil bag (7), each containing a flowable or liquid substance; at least two pistons (8, 9), each configured to press against a first end of a corresponding foil bag (6, 7) received in the cartridge (5) when the actuating element (3) is actuated, or one piston configured to press against the first ends of the foil bags (6, 7) received in the cartridge (5) when the actuating element (3) is actuated;wherein the merging (10) is configured to be attached to a downstream end of the cartridge (5) and to be pressed against the respective second ends of the corresponding foil bags (6, 7) contained in the cartridge (5) when the actuating element (3) is actuated, wherein the merging (10) is further configured to open a foil at the respective second ends of the foil bags (6, 7) when the respective second ends of the corresponding foil bags (6, 7) contained in the cartridge (5) are pressed against the merging (10) so that the substances from the foil bags (6, 7) enter a cavity (11) of the merging (10);wherein the cartridge press (1) further comprises a mixing device (12) arranged downstream of the merging (10), which is in fluid communication with the cavity (11) of the merging (10) and has an outlet (35) configured to discharge the substances from the cavity (11) of the merging (10), wherein the mixing device (12) is configured to mix the substance of the first foil bag (6) and the substance of the second foil bag (7) together.

2. Assembly (10) according to the previous claim, wherein the outer diameter of the second foil bag (7) is between 50 and 80 mm, preferably between 59 and 70 mm, more preferably between 59 and 61 mm; and wherein the outer diameter of the first foil bag (6) is between 10 and 30 mm, preferably between 15 and 25 mm, more preferably between 18 and 21 mm.

3. Assembly (10) according to one of the preceding claims, wherein the assembly (10) has at least one inlet (20, 30), preferably one inlet (20, 30) each for a corresponding foil bag (6, 7) configured to be coupled to the second ends of the corresponding foil bags (6, 7) received in the cartridge, and a continuation (21) configured to release the substances from the cavity (11) of the assembly (10).

4. Merger (10) according to the previous claim, wherein piercing devices (22) are provided at the respective inlet (20, 30) of the merger, configured to pierce the corresponding foil bags (6, 7) when the actuating element (3) is actuated and the respective second ends of the corresponding foil bags (6, 7) received in the cartridge (5) are pressed against the merger (10).

5. Assembly (10) according to one of the preceding claims, wherein the assembly (10) is configured to release the substance of the first foil bag (6) and the substance of the second foil bag (7) from the extension (21) such that the substance of the first foil bag (6) is released substantially centrally within the substance of the second foil bag (7).

6. Assembly (10) according to one of the preceding claims, wherein the assembly (10) is configured to be pressed onto the downstream end of the cartridge (5), preferably by means of a friction- or form-fit engagement device (23).

7. Mixing device (12) for a cartridge gun (1), wherein the cartridge gun (1) comprises: a handle (2) having an actuating element (3); a tray (4), preferably a half-shell, attached to the handle (2); a cartridge (5) received in the tray (4), configured to receive at least one first foil bag (6) and one second foil bag (7), each containing a flowable or liquid substance; at least two pistons (8, 9), each configured to press against a first end of a corresponding foil bag (6, 7) received in the cartridge (5) when the actuating element (3) is actuated, or one piston configured to press against the first ends of the foil bags (6, 7) received in the cartridge (5) when the actuating element (3) is actuated;a merging (10) attached to a downstream end of the cartridge (5) and configured to press against the respective second ends of the corresponding foil pouches (6, 7) contained in the cartridge (5) when the actuating element (3) is actuated, wherein the merging (10) is further configured to open a foil at the respective second ends of the foil pouches (6, 7) when the respective second ends of the corresponding foil pouches (6, 7) contained in the cartridge (5) are pressed against the merging (10), so that the substances from the foil pouches (6, 7) enter a cavity (11) of the merging (10);wherein the mixing device (12) is configured to be arranged downstream of the merging (10), to enter a fluid connection with the cavity (11) of the merging (10), and wherein the mixing device (12) has an outlet (35) configured to discharge the substances from the cavity (11) of the merging (10); wherein the mixing device (12) has at least one mixing element (13) configured to mix the substance of the first film bag (6) and the substance of the second film bag (7) together; wherein the mixing element (13) has an inner diameter between 15 and 25 mm, preferably between 16 and 22 mm, more preferably between 17 and 19 mm; and wherein the mixing element (13) has an outer diameter between 16 and 28 mm, preferably between 18 and 20 mm, more preferably between 19 and 20 mm.

8. Mixing device (12) according to the previous claim, wherein the mixing element (13) has a plurality of ribs (14) each having a surface (15) facing the merging (10), wherein the surfaces (15) of adjacent ribs (14) are not parallel to each other.

9. Mixing device (12) according to the previous claim, wherein a space between the ribs of a mixing element (13) has a horizontal width between 1.5 and 3 mm, preferably between 2 and 2.5 mm, more preferably between 2.2 and 2.

3.

10. Mixing device (12) according to claim 8 or 9, wherein the mixing device (12) has a plurality of mixing elements (13) arranged one above the other or stacked, each of which has an annular frame (16) with ribs (14) attached therein.

11. Mixing device (12) according to the previous claim, wherein in a cross-section through the mixing elements (13) arranged one above the other or stacked the ribs (14) of adjacent mixing elements (13) are arranged in an X-shape.

12. Mixing device (12) according to one of claims 10 and 11, wherein the mixing device (12) has a plurality of identical mixing elements (13) arranged one above the other or stacked, wherein adjacent mixing elements (13) can be arranged in the mixing device (12) in a mirror-image arrangement relative to each other.

13. Mixing tube (17) configured to accommodate the mixing device (12) according to any one of claims 7 to 12.

14. Mixing tube (17) according to the previous claim, comprising an outlet (18) and an inlet (19) configured to be in a fluid connection with the continuation (21) of the merging (10), wherein the mixing device (12) can be arranged in the mixing tube (17) at the inlet (19) of the mixing tube (17).

15. Mixing tube (17) according to one of claims 13 and 14, wherein the mixing tube (17) is configured to be screwed onto the junction (10) or to be inserted into the extension (21) of the junction (10) by means of a bayonet fitting.

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