EP3188847A1

EP3188847A1 - Application device for applying gel-like and/or paste-like compositions and application unit for an application device of this type

Info

Publication number: EP3188847A1
Application number: EP15756421.2A
Authority: EP
Inventors: Michael Ruhstaller; Christian Schultheiss; Manuel Buck
Original assignee: Sika Technology AG
Current assignee: Sika Technology AG
Priority date: 2014-09-02
Filing date: 2015-09-01
Publication date: 2017-07-12
Anticipated expiration: 2035-09-01
Also published as: CN106794485B; EP3188847B1; US20170274414A1; WO2016034554A1; CN106794485A

Abstract

The invention relates to an application unit for an application device, in particular an application gun for applying gel-like and/or paste-like compositions, comprising an output unit (10) for dispensing the compositions, a connection element (12), in particular a cover, for connecting the output unit (10) to the main body of the application device, and a closure element (11), wherein the closure element (11) is rotatable around an axis of rotation with respect to the connection element (12) and the output unit (10) for fastening the output unit (10) on the connection element (12) and for detaching the output unit (10) from the connection element (12), wherein a lifting unit (16, 19, 25, 26) is formed and arranged in such a way that the output unit (10) is lifted by a rotation of the closure element (11).

Description

Application device for applying gelatinous and / or pasty compositions and application device for such a

applicator

description

Technical area

The present invention relates to an application device, in particular an application gun for applying gelatinous and / or pasty compositions and an application device for such an application device.

State of the art

Applicators for applying gelatinous and / or pasty compositions are already known from the prior art.

For example, EP 2 606 987 A1 discloses an application device in which a connection element is provided at a front end of a device housing. At this connection element, an output unit is mounted with a mixer. In this case, connection element and output element (for outputting the composition) are on

Locking element ("coupling ring") fixed together.

The output unit of such an application device usually has to be removed at regular intervals from the device housing and reconnected to the device housing. In this context, it has been found that the removal of the dispensing unit is relatively complicated and cumbersome. US 2010/0102088 A1 describes an applicator with a cartridge which has two containers for components to be mixed. A mixer is connected to the cartridge via a latching connection. Ramps allow the mixer to be raised relative to the cartridge by rotation. Overall, the closure mechanism of US 2010/0102088 A1, in which, on the one hand, a movement for producing the latching connection and, on the other hand, a rotational movement for lifting the mixer, is perceived as being laborious.

WO 2006/005213 A1 describes a discharge device for a Einmai- application, with a multi-component cartridge with closure and a mixer. Turning a threaded ring opens a valve mechanism. The valve mechanism includes a closure member that is latched into a mixer housing. However, such a valve mechanism does not facilitate removal of an output unit from a main body.

EP 2 497 721 A1 describes a discharge device for mixing and discharging multicomponent masses. A mixer housing is attached via a rotating cap. Furthermore, by a rotation of the rotary cap, the mixer housing can be moved away from the cartridge, so that

Output ports are open and the discharge of the components can be done. So here too, it is mainly about a valve function that does not simplify removal of an output unit of a main body.

WO 2012/055926 A1 discloses a mixer that faces a

Connecting element is rotatable. However, such a (two-part) solution is found to be less practical to handle.

It is therefore an object of the present invention, an application device, in particular application gun for applying gelatinous and / or pasty compositions and an application device for a to propose such application device, in which the removal of the

Output unit over the prior art is simplified and facilitated.

Presentation of the invention

This object is achieved by an application device according to claim 1.

In particular, the object is achieved by an application device for an application device, in particular an application gun, for applying gelatinous and / or pasty compositions (such as adhesives and / or sealants) comprising an output unit for dispensing the composition, a connection element, in particular a lid

Connecting the output unit to an application device main body and a closure element dissolved, wherein the closure element relative to the connection element and the output unit for securing the

Output unit on the connection element and for releasing the

Output unit of the connecting element is rotatable about an axis of rotation, wherein a lifting device is provided, formed and arranged such that the dispensing unit is raised by a rotation of the closure element (for releasing the dispensing unit).

A core idea of the invention is a rotation of the

Closing element in such a way to use synergistically that by the rotation (to release the fixation between

Connection element and output element), the output unit is raised. In this case, the closure element rotates both opposite to the

Connection element as well as with respect to the output unit. At least temporarily (preferably during the entire rotation process) output unit and connecting element are not rotated against each other. While the shutter member performs a rotation, the moves

Output unit due to the lifting device translationally from the

Connection element away. This forced translational movement causes the dispensing unit to be raised relative to the connection element and thereby be easier to remove (in particular

Holding forces due to the attachment of the dispensing unit in the

Connection element easier to overcome).

Closure element, output unit and connection element are in particular formed as three separate parts which are in particular rotatable relative to each other and / or translationally movable. Each of these parts can be so

be moved relative to each of the other two parts rotationally and / or translationally. In particular, it is intended that all three parts

can be removed from each other (without destroying any of the three parts or a permanent connection between the parts). Thus, according to the invention, the output unit is raised by a rotation so that it can be released from the connection element (can be removed). The dispensing unit is therefore removable (preferably by hand), in particular when the lifting operation is completed, that is to say when a preliminary end position of the dispensing unit is present (in a maximum raised state). Overall, it's not about to suggest a kind of valve mechanism to open dispensing openings, for which the prior art already offers solutions, but to show a mechanism that allows in a simple way (complete) removal of the output unit, so no indirect There is more connection between the output unit and the connection element.

Gels and / or pasty compositions may in particular be adhesives or sealants. It is conceivable in the context of adhesives in particular that these are finished adhesives or accelerated one-component adhesives, to which an accelerator or booster for faster curing is added, or two-component adhesives. As sealants, for example, silicone sealants or The like or silicone-based sealants are used, for example, find application in the field of sealing joints.

A gelatinous composition in particular has a gel-like consistency. A gel is usually defined as a finely divided system of at least one solid and one liquid phase. The solid phase forms a sponge-like, three-dimensional network whose pores are filled by a liquid. A pasty composition has in particular a pasty consistency, i. a consistency such as a paste (ie, a solid-liquid mixture, e.g., suspension, preferably having a high solids content) and in particular having pseudoplastic properties. A "dispensing unit" should be understood to mean, in particular, a unit which has an opening from which the composition can emerge In a concrete embodiment, the dispensing unit comprises in particular a mixer unit The dispensing unit may comprise a nozzle element, via the outlet opening of which the composition can emerge. Basic structure and function of an output unit can be found in EP 2 606 987 A1 (where the output unit is referred to as a "mixer"). An application device main body can also be constructed with regard to the basic structure and its function as described in EP 2 606 987 A1.

The "lifting device" according to the invention is a structure that has a

Rotational movement (of the closure element) at least partially in a translational movement (the output unit) transferred. The corresponding translatory movement of the dispensing unit does not necessarily have to be from bottom to top, but usually takes place in a direction pointing away from the dispenser main body. In a concrete embodiment form closure element and

Connection element from a bayonet lock to attach the output unit to the connection element. Preferably, the lifting device can be at least partially formed by the bayonet closure. By a bayonet lock can be realized in a simple manner a releasable attachment. If the bayonet lock still partially the

Lifting device is formed, a dual functionality is realized in a synergistic way with a simple structure, which both the

Manufacturing effort as well as the effort in the use of

Application device significantly reduced.

In a preferred embodiment, the lifting device has a

Closing element stop and a dispensing unit stop, wherein closure element stop and dispensing unit stop come into sliding contact upon rotation of the closure element such that the dispensing unit is lifted due to the rotation of the closure element. By such a development, the conversion of a rotational movement into a translational movement is realized particularly easily. This facilitates the handling of the application device.

Preferably, the closure element stop is part of the

Bayonet catch. This also simplifies the structure of the application device or of the application device so that production costs can be reduced and yet reliable functioning is ensured.

Alternatively or additionally, a surface normal of the closure element stop and / or the output unit stop parallel to

Run axis of rotation. This allows a particularly efficient lifting of the output unit.

Alternatively or additionally, the closure element stop on a peripheral surface, in particular inner peripheral surface of the closure element be provided. Alternatively or additionally, the output unit stop on a peripheral surface, in particular outer peripheral surface of

Be provided output unit. As a result, the two stops can be brought in a particularly simple manner with each other, which simplifies the handling of the application device.

Preferably, the closure element stop and / or the

Output unit stop defined by a side surface of a rib.

Alternatively or additionally, the closure element stop and / or the dispensing unit stop can be defined by a side surface, in particular lower side, of a wing element. In a specific embodiment, the closure element abutment is defined by a side surface of a rib and the dispensing unit stop by a side surface (underside) of a wing element. During a rotation, the side surface (underside) of the wing element slides along the rib and is raised by the rib, which on the one hand rotates and on the other hand translates. This will be a particularly easy removal of

Output unit realized. In a preferred embodiment, the dispensing unit has at least one, in particular radially outwardly directed wing element (in particular the wing element described above), wherein the connecting element has a corresponding recess for receiving the wing element. In particular, when the output unit on the connection element

is connected (that is, for example, during use of the application device), the wing element is received by the recess of the connection element. If the closure element is now rotated (for removal of the dispensing unit), the wing element translates within the recess (away from the application device main body). By the

Recesses on the one hand, a positioning of the output unit is simplified. In particular, a position of the dispensing unit is also stabilized (even if, in the fixed position of the dispensing unit, it is rotationally fixed by a shoulder element within the dispenser main body is held). Overall, the handling is further simplified.

In principle, conversely (in an alternative embodiment), the connection element may have at least one (in particular radially inwardly directed) wing element and the output unit a

corresponding recess for receiving the wing element.

In a preferred embodiment of the application device, the output unit has a mixer unit. Alternatively or additionally, a nozzle element may be provided.

In a development, the bayonet lock on the

Have closure element trained run-on slope, the

Mounting the dispensing unit against a (radially outwardly standing) pin (generally projection) of the connecting element starts. Alternatively or additionally, the bayonet lock on the connection element may have a connection element starting bevel, which upon release of the

Output unit starts against a projection of the closure element. Such a structure facilitates removal of the dispensing unit. In an alternative embodiment, the closure element and the connection element form a screw closure in order to fasten the dispensing unit to the connection element. For example, that can

Closing element to have an internal thread and the

Connecting element a corresponding external thread (or vice versa). Such a screw cap is preferably provided as an alternative (or in addition) to the bayonet closure. The rest

Components (individually or in combination), in particular an associated lifting device (eg wing element), can be formed as described above, in particular as described in connection with the bayonet closure. Such a screw cap is easy to manufacture and use. The closure element can be designed as a (screw) closure ring. The above object is further in particular by a

Application device, preferably application gun, solved, comprising an application device of the type described above and a

Application apparatus main body.

Furthermore, the above object is achieved independently by the use of an application device of the type described above for an application device, in particular an application gun for applying gel and / or pasty compositions (such as adhesives and / or sealants).

Brief description of the drawings

In the following an embodiment of the invention will be explained in more detail with reference to the drawings.

FIG. 1 shows a schematic oblique view of an inventive device

Application equipment;

Figure 2 shows the application device according to Figure 1 without closure element in an oblique view;

3 shows a closure element in a schematic oblique view;

FIG. 4 shows an output unit in an oblique view; FIG. 5 shows a connection element in a schematic oblique view;

FIG. 6 shows the connection element according to FIG. 5 in a side view with dotted sections of the output unit according to FIG. 4 and of the closure element according to FIG. 3;

7 shows a representation analogous to FIG. 6 after a rotation of the

Closing element according to Figure 3 opposite to the

Connection element according to Figure 5 and the output unit of Figure 4; and

8 shows a representation analogous to FIGS. 6 and 7 after another

Rotation of the closure element. Only the elements essential for the immediate understanding of the invention are shown.

Way to carry out the invention

FIG. 1 shows an application device for an application device,

in particular an application gun, for applying gelatinous and / or pasty compositions. The application device comprises an output unit 10, a closure element 1 1 and a

Connection element 12.

The connection element 12 is designed as a cover element and closes off a (not shown) Applikationsgeräte main body at the end. The closure element 1 1 is used to attach the output unit 10 to the connection element 12. The closure element 1 1 is as a ring body

formed and has on an outer peripheral surface 13 axially extending projections 14 which facilitate rotation of the closure element 1 1 in the operation of the application device.

Figure 2 corresponds to Figure 1, wherein the closure element 1 1 has been omitted. As a result, it can be seen that the dispensing unit 10 is received in the assembled state in a cylinder body 15 of the connecting element 12. Specifically, three (the number may be larger or smaller) wings 16 provided on the output unit 10, wherein the wings 16 (in the

Mounting position) within recesses 17 of the connecting element 12 are arranged. In principle, the dispensing unit 10, as shown in FIG. 2, could be removed from the connection element 12 by lifting the dispensing unit. For this, however, the (not inconsiderable) restraining force of a (not shown in figures) shoulder element to overcome, on which the output unit is disposed within the application device. In Figure 2 it can be seen further that the connecting element 12 (on the cylindrical body 15) has a pin 18 and a run-on slope 19. The run-on slope 19 is defined by an (upper) edge 20 of the cylindrical body 15. The pin 18 is located on an outer peripheral surface 21 of the connecting element 12 and the cylindrical body 15th

The pin 18 is part of a bayonet closure, the run-on slope 19 is part of a lifting device to lift the output unit 10 (via the wings 16), which is shown in the following figures.

FIGS. 3 to 5 show oblique views of the elements dispensing unit 10, closing element 11 and connecting element 12. FIG. 4 shows that the dispensing unit 10 has a mixing unit 22 and an outlet nozzle 23.

In the following, the function of the invention is explained in particular with reference to FIGS. 3 to 5 and FIGS. 6 to 8. Furthermore, dotted lines are drawn: a run-on slope 24 of the closure element 11 (see also FIG. 3), a rib 25 of the connection element 11 (see also FIG. 3) and a projection 26 of FIG Connecting element 1 1 (see also Figure 3) and one of the three wings 16 (see also Figure 4) of the output unit 10. It should be noted that the dashed in Figures 6 to 8 elements are shown in a highly schematic.

Overall, it should be noted that the elements provided by the reference numerals 15, 16, 17, 19, 18, 24, 25 and 26 may each be formed in triplicate (corresponding to one another). Another number is possible

(for example, one, two or more than four). However, it is preferred to provide at least a threefold version of these elements to a stable and secure rotation of the closure element 1 1 and a stable and secure attachment of the dispensing unit 10 to allow. Particularly preferred is the (also shown in the figures) triple version, in particular the respective elements in a Mercedes star-like

Configuration are arranged.

FIG. 6 shows a starting position of the application device. This position is assumed when the output unit 10 is connected to the connection element 12 via the closure element 1 1 (so that the

Application device or the application device can be used). If the closure element 1 1 is now rotated (viewed in the counterclockwise direction in FIGS. 3 to 8 from above), the projection 26 runs against the

Run-on slope 19, so that the closure element 1 1 in addition to the

Rotational motion also a translatory movement, of which

Connection element 12 away, performs. This translational movement is transmitted to the wings 16 and thus the output unit 10, so that these also translationally moves without moving in rotation. This is shown in FIG.

The induced by the rotation of the closure element 1 1 translational movement of the closure element 1 1 (and associated

Translational movement of the wing member 16 and the output unit 10) ends when the projection 26 has reached one end of the run-on slope 19 (this is shown in Figure 8). In this state, those of the application device main body (or a shoulder element of the application device) are

applied holding forces (essentially) overcome, so that the

Output unit 10 without great effort and easily removed completely (by the operator). Total are

essential components of the lifting device, the elements 25, 26 and 19. These elements force the wings 16 of the output unit 10 upwards or raise these wings 16 at.

The bayonet lock is in particular by the run-on slope 24 and the rib 25 (which together can form an integral part) together with realized the pin 18. If one goes to the figures 8 to 6 backwards, then the operation of this bayonet closure can be derived. FIG. 8 shows the position which the dispensing unit and the closure element 1 1 occupy at the beginning of the fastening process. If the closure element 1 1 is now rotated (seen in the clockwise direction in FIGS. 3 to 8 from above), then it runs

Run-up slope 24 against the pin 18 and forces the closure element 1 1 (together with the output unit 10 via an annular projection 27 which bears against the output unit 10) down (see Figure 7). Another rotation finally leads to the end position according to FIG. 6, in which the

Output unit 10 is attached to the connection element 12 and thus the

Application device or the application device can be used.

As can be seen in particular from FIG. 3, the run-on slope 24, the rib 25 and the projection 26 are located on an inner peripheral surface 28 of the closure element 11. As can be seen in particular from FIG. 4, the vanes 16 are located on an outer peripheral surface 29 of FIG

Output unit 10. As a result, the wings 16 can be particularly easily brought into engagement with the rib 25. In addition, the run-on slope 24 can be particularly effective with the pin 18 (as described above).

interact.

LIST OF REFERENCE NUMBERS

10 output unit

1 1 closure element

12 connection element

13 outer peripheral surface

14 lead

15 cylindrical body

16 wings

17 recess

18 cones

19 At an angle

20 marginal edge

21 outer circumferential surface

22 mixing unit

23 outlet nozzle

24 At an angle

25 rib

26 advantage

27 annular projection

28 inner peripheral surface

29 outer peripheral surface

Claims

claims

1 . Application device for an application device, in particular an application gun for applying gelatinous and / or pasty compositions, comprising an output unit (10) for

Output of the composition, a connection element (12), in particular cover, for connecting the output unit (10) to an application device main body and a closure element (1 1), wherein the closure element (1 1) relative to the connection element (12) and the output unit ( 10) for fixing the output unit (10) to the connection element (12) and for releasing the

Output unit (10) of the connection element (12) to a

Rotation axis is rotatable, wherein a lifting device (16, 19, 25, 26) is designed and arranged such that the output unit (10) is raised by a rotation of the closure element (1 1).

2. Application device according to claim 1, characterized in that the closure element (1 1) and connection element (12) has a

Bayonet closure (24, 25, 18) form to secure the dispensing unit (10) to the connecting element (12), preferably wherein the lifting device (16, 19, 25, 26) at least partially through the

Bayonet closure (24, 25, 18) is formed, in particular wherein a common rib (25) both part of the

Bayonet and the lifting device is.

3. Application device according to claim 1 or 2, characterized

in that the lifting device (16, 19, 25, 26) has a

Closing element stop and a dispensing unit stop, wherein closure element stop and dispensing unit stop during rotation of the closure element (1 1) come into sliding contact such that the output unit (10) due to the rotation of the closure element (1 1) is raised , Anwendungseinnchtung according to any one of the preceding claims, in particular according to claim 3, characterized in that the closure element stop is a part of the bayonet closure (24, 25, 18) and / or characterized in that a

Surface normal of the closure element stop and / or the output unit stop runs parallel to the axis of rotation.

Application device according to one of the preceding claims, in particular according to one of claims 3 or 4, characterized

characterized in that the closure element abutment on a peripheral surface, in particular inner peripheral surface (28) of the

Closing element (1 1) is provided and / or that of

Dispensing unit stop on a peripheral surface, in particular outer peripheral surface (29), the output unit (10) is provided.

Application device according to one of the preceding claims, in particular according to one of claims 3 to 5, characterized

characterized in that the closure element stop and / or the dispensing unit stop is defined by a side surface of a rib (25) and / or characterized in that the

Closing element stop and / or the output unit stop by a side surface, in particular underside of a wing element (16) is defined.

Appliance device according to one of the preceding claims, characterized in that the dispensing unit (10) has at least one, in particular radially outwardly directed, wing element (16), in particular the wing element according to claim 6 and the connecting element (12) has a corresponding recess (17) for Receiving the wing element (16).

8. Anwendungsseinnchtung according to any one of the preceding claims, characterized in that the output unit (10) a

Mixer unit (22) and / or a nozzle member (23).

9. Application device according to one of the preceding claims, characterized in that the bayonet closure (24, 25, 18) on the closure element (1 1) formed run-on slope (24), which preferably during mounting of the output unit (10) against a pin ( 18) of the connection element (12) starts and / or characterized in that the bayonet closure (24, 25, 18) on the connection element (12) has a connection element starting slope which, when the output unit (10) is fastened, is secured against a projection of the closure element (10). 1 1) starts.

10. Application device according to one of the preceding claims, characterized in that the closure element (1 1) and

Connection element (12) form a screw, in particular comprising two mutually corresponding threads, to attach the output unit to the connection element.

1 1 .Applikationsgerät, in particular application gun, for applying gelatinous and / or pasty compositions, comprising an application device according to one of the preceding

Claims.

12. Use of an application device according to one of claims 1 to 10 for an application device, in particular an application gun, for applying gelatinous and / or pasty

Compositions.