EP3548186B1 - Nozzle device with concave opening configuration and method for dispensing a viscous application medium - Google Patents

Description

The invention relates to a nozzle device for dispensing a viscous, in particular highly viscous, application medium in the form of at least one jet or at least two jets onto a component, preferably for the surrounding application of the application medium to a fold, an edge or a transition seam of the component. The component is preferably a motor vehicle component (e.g. a motor vehicle body component), but can also be e.g. B. a component of a commercial vehicle (e.g. a commercial vehicle body component, a component of an aircraft, a window (e.g. a window pane) or a facade component.

The general state of the art is referred to DE 20 48 865 B and the U.S. 2,284,443 A referenced. With reference to Figure 16 According to the state of the art, especially standing seams (e.g. component edges), as they occur in particular in the sill area or on the side members of a motor vehicle, are sealed using conventional, robot-controlled flat jet nozzles (also called flat stream nozzles) made of hard metal. In this process, the standing seam is sealed from at least one and possibly also from both sides with PVC (PVC: polyvinyl chloride). So that the underside of the standing seam can also be reliably sealed, a robot program is usually created in such a way that the lower edge of the spray jet emitted from the nozzle is applied a few millimeters below the standing seam and thus past the standing seam ("shot past") becomes. The PVC material that is applied to one side of the standing seam wraps itself around the seam edge to a certain extent and thus seals the lower, corrosion-prone side of the standing seam.

The requirements for a conventional PVC seam are usually 15 mm to 25 mm seam width and 1.5 mm to 2.5 mm seam height. So that this can be achieved with a structurally limited nozzle, the slot opening of the conventional flat jet nozzle is convex so that the jet width of the spray jet increases towards the standing seam and thus towards the delivery side.

A particular disadvantage of the prior art described above is that part of the released PVC material is "shot past" the standing seam as a result of the process. This has the consequence that the robot guiding the flat jet nozzle and / or the application cell in which the method is carried out is soiled, and thus an increased cleaning effort arises. The application can usually not be set differently due to component tolerances that are usually found in motor vehicle bodies. The component tolerances also mean that the standing seam usually has to be applied from both sides. Joined sheet metal edges z. B. differ in length from body to body.

One object of the invention is to create a possibility for dispensing a viscous application medium onto a component, preferably for the surrounding application of the application medium to a fold, an edge or a transition seam of the component, by means of which the required amount of the application medium can be reduced.

This object can be achieved with the features of the independent claims. Advantageous developments of the invention can be found in the dependent claims and the following description of preferred embodiments of the invention.

The invention relates to a nozzle device for dispensing at least one z. B. viscous (especially highly viscous) application medium in the form of at least one jet on a component, preferably for the surrounding application of the application medium on a fold (z. B. standing seam), an edge or a transition seam of the component.

The component is preferably a motor vehicle component, e.g. B. a motor vehicle body.

The component can also, for. B. a component of a commercial vehicle (e.g. a commercial vehicle body component), a component of an aircraft, a window (e.g. a window pane) or a facade component.

Areas of application of the nozzle device are therefore in particular: motor vehicles, utility vehicles, aircraft, windows and / or facade construction.

The nozzle device can expediently be designed to emit at least one jet or at least two jets.

The at least one beam can define a beam width.

The nozzle device comprises an opening configuration for forming at least one slot opening for dispensing the application medium and is characterized in particular by the fact that the opening configuration is concave so that a Narrowing of the beam width to the delivery side can be effected.

The beam width can, for. B. comprise a single jet if the nozzle device has only a single slot opening for the delivery of a single jet.

The beam width can, for. B. comprise at least two jets, if the nozzle device has at least two slot openings for emitting at least two jets. The at least two openings can, for. B. inwardly so that the at least two beams approach each other towards the delivery side.

• Der Verbrauch an Auftragsmedium kann reduziert werden.
• Die Verschmutzung einer Applikationszelle kann reduziert werden.
• Eine prozesssichere Abdichtung unterschiedlicher Falzarten, insbesondere Stehfalze, kann ermöglicht werden.
• Auf ein Bauteilvermessungssystem zur Vermessung des (Kraftfahrzeug-) Bauteils kann verzichtet werden.
• Eine hohe Applikationsgeschwindigkeit kann erzielt werden, insbesondere gegenüber Applikationsverfahren mit Bauteilvermessung.
• Ein größerer Spritzabstand zwischen Düsenvorrichtung und (Kraftfahrzeug-) Bauteil kann ermöglicht werden, z. B. bis zu 50mm.
• Größere Bauteiltoleranzen können ermöglicht werden, z. B. +/- 3mm bis 5mm.
• Aufgrund der einfachen Bauform der Düsenvorrichtung entsteht vorzugsweise keine zusätzliche Störkontur am Applikator und/oder am Roboter, so dass z. B. auch schwer zugängliche Stellen, z. B. Falze, Nähte, Kanten, etc., gut erreicht werden können.
• Durch Erhöhung der Ausflussrate des Auftragsmediums kann ermöglicht werden, auch eine konventionelle Naht, z. B. aus PVC, auf das (Kraftfahrzeug-) Bauteil aufzutragen.

In this way, one or more of the following advantages can preferably be achieved:

• The consumption of application medium can be reduced.
• The contamination of an application cell can be reduced.
• A process-reliable sealing of different types of folds, in particular standing seams, can be made possible.
• A component measuring system for measuring the (motor vehicle) component can be dispensed with.
• A high application speed can be achieved, especially compared to application methods with component measurement.
• A larger spray distance between the nozzle device and the (motor vehicle) component can be made possible, e.g. B. up to 50mm.
• Larger component tolerances can be made possible, e.g. B. +/- 3mm to 5mm.
• Due to the simple design of the nozzle device, there is preferably no additional interfering contour on the applicator and / or on the robot, so that, for. B. also hard-to-reach places, e.g. B. folds, seams, edges, etc., can be easily reached.
• By increasing the outflow rate of the application medium, a conventional seam, e.g. B. made of PVC, to be applied to the (motor vehicle) component.

• Abdichtung von z. B. metallischen (Kraftfahrzeug-) Bauteilen, die geschweißt oder geklebt werden, z. B. Falze (insbesondere Stehfalze) oder Übergangsnähte, aber auch z. B. Bauteilkanten einzelner Bauteile.
• Z. B. 3-seitig umgreifende (umschließende) Applikation (Beschichtung) eines z. B. viskosen oder hochviskosen Auftragsmediums auf ein (Kraftfahrzeug-) Bauteil, zum Korrosionsschutz von Schnittkanten an z. B. Blechen, Schutz vor Verletzungen beim manuellen Bauteilhandling (z. B. bei scharfkantigen Blechkanten), Schutz vor Kantenbeschädigung (z. B. bei Faserverbundwerkstoffen) und/oder Scheuerschutz.

The nozzle device is particularly suitable for at least one of the following possible applications:

• Sealing of z. B. metallic (motor vehicle) components that are welded or glued, e.g. B. folds (especially standing seams) or transition seams, but also z. B. Component edges of individual components.
• For example, 3-sided encompassing (enclosing) application (coating) of a z. B. viscous or highly viscous application medium on a (motor vehicle) component, for corrosion protection of cut edges on z. B. sheet metal, protection against injuries during manual component handling (e.g. with sharp-edged sheet metal edges), protection against edge damage (e.g. with fiber composite materials) and / or abrasion protection.

It is possible that the opening configuration is formed in an end face of the nozzle device and the end face is concave. The opening configuration and thus preferably the at least one slot opening and / or the end face are essentially curved and concave.

It is possible for the opening configuration to be concave relative to a longitudinal section along the opening configuration.

The opening configuration can in particular be defined by a spray-off edge structure, by means of which the application medium can expediently be sprayed off.

It is possible for the opening configuration and thus the at least one slot opening to be essentially curved and concave over at least almost its entire longitudinal extent.

A material recess for supplying the application medium to the opening configuration and thus to the at least one slot opening is incorporated into the nozzle device.

It is provided that the material recess opens into the opening configuration and on the delivery side forms the opening configuration and thus the at least one slot opening.

The material recess can, for. B. be designed to distribute the application medium over the longitudinal extent of the opening configuration.

It is provided that the material recess has a line section and a chamber section arranged downstream of the line section, the chamber section opening into the opening configuration and the passage cross section of the chamber section being larger than the passage cross section of the line section.

The material recess, e.g. B. in particular the passage cross-section of the chamber section and / or the passage cross-section of the line section, can be formed in cross section preferably at least partially essentially flat (e.g. slot-shaped and / or essentially rectangular), alternatively or additionally but also at least partially essentially round (e.g. by means of a drilling or in a 3D printing variant).

It is possible that the material recess z. B. has inner flanks on both sides on the outside in order to deflect the delivery medium inwardly to the at least one slot opening.

It is possible for a protruding horn structure to be arranged on both sides outside next to the opening configuration and for the horn structure preferably to include at least two inwardly shaped inner flanks.

It is possible that the inner flanks act on the application medium dispensed from the at least one slot opening in such a way that the narrowing of the jet width is supported and / or the application medium is deflected inward.

The opening configuration can have at least two slot openings for outputting at least two beams.

The at least two beams can define a beam width comprising the at least two beams.

The at least two slot openings can be through the concave opening configuration z. B. inwardly so that the at least two beams approach each other towards the delivery side. Alternatively or additionally, the at least two beams can define a beam width comprising the at least two beams, the opening configuration expediently being concave in order to narrow the beam width comprising the at least two beams towards the delivery side.

The nozzle device can, for. B. have at least one dividing section for forming and / or separating at least two slot openings for outputting at least two beams.

The nozzle device can preferably be designed as a nozzle head.

The nozzle head can preferably represent a one-piece, integral component, so that, as a result, z. B. components made from one piece are included.

The nozzle device can, however, also be designed as a nozzle plate.

The nozzle device designed as a nozzle plate can comprise a counterplate for arrangement next to the nozzle plate, so that the nozzle device can also be designed in several parts.

The counter plate can, for. B. have at least one of the following features: designed to close the opening configuration and thus the at least one slot opening in the circumferential direction, designed to close the material recess in the circumferential direction, and / or on the delivery side, complementary concave to the opening configuration, preferably essentially flush complete with the opening configuration.

The at least one beam can, for. B. be at least a flat jet.

The opening configuration can in particular define a jet plane for the at least one flat jet, within which the at least one flat jet extends and within which the jet width narrows towards the delivery side.

It is possible that the opening width of the opening configuration and / or the opening width of the at least one slot opening transversely to its longitudinal extension has a value between 0.2 mm and 0.5 mm.

The application medium can, for. B. PVC (polyvinyl chloride) and / or a PVC plastisol.

It is possible that the at least one jet and / or the application medium can be bundled and / or focused in a targeted manner by setting a suitable outflow quantity and by means of the nozzle shape and nozzle contour disclosed herein.

The features "concave" and "curved concave" preferably include, within the scope of the invention, essentially arcuate concave configurations, but are not restricted to this, but can also z. B. include linear concave configurations.

The invention is not limited to a nozzle device, but also includes a method for dispensing a z. B. viscous, especially highly viscous application medium in the form of at least one jet on a component, preferably for the surrounding application of the application medium on a fold, an edge or a transition seam of the component.

In the method, at least one beam or at least two beams can expediently be output.

The at least one beam defines a beam width.

The beam width can, for. B. comprise one beam or at least two beams.

The method is carried out with a nozzle device which has an opening configuration for forming at least one slot opening from which the application medium is dispensed.

The method is characterized in that the opening configuration is concave so that the beam width is narrowed towards the delivery side. It is possible that the opening configuration and the fold, the edge or the transition seam are essentially aligned with one another at the front during the delivery of the application medium and the application medium nevertheless meets two side surfaces and / or the end surface of the fold, the edge or the transition seam.

The method is carried out with a nozzle device as disclosed herein, so that the disclosure made on the nozzle device expediently also applies to the method.

Figur 1

zeigt eine Seitenansicht einer Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 2

zeigt eine Längsschnittansicht entlang Linie A-A der Figur 1,

Figur 3

zeigt eine schematische Draufsicht auf eine Öffnungskonfiguration der Düsenvorrichtung der Figuren 1 und 2,

Figur 4

zeigt eine perspektivische Ansicht einer Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 5

zeigt eine Seitenansicht der Düsenvorrichtung der Figur 4,

Figur 6

illustriert einen Applikationsprozess mit einer Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 7

zeigt eine Schnittansicht einer Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 8

zeigt eine Seitenansicht einer Plattenhalterung für eine Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 9

zeigt eine Schnittansicht einer Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 10

zeigt eine Draufsicht auf die Düsenvorrichtung der Figuren 8 und 9,

Figur 11

zeigt eine Schnittansicht der Düsenvorrichtung der Figuren 8 bis 10,

Figur 12

zeigt eine Schnittansicht einer Düsenvorrichtung gemäß einer Ausführungsform der Erfindung,

Figur 13

zeigt eine Seitenansicht einer Düsenvorrichtung gemäß einer wiederum anderen Ausführungsform der Erfindung,

Figur 14

zeigt eine Schnittansicht der Düsenvorrichtung der Figur 13,

Figur 15

zeigt eine Schnittansicht einer Gegenplatte für die Düsenvorrichtung der Figuren 13 und 14, und

Figur 16

zeigt einen Applikationsprozess zur Abdichtung eines Stehfalzes gemäß Stand der Technik.

The preferred embodiments of the invention described above can be combined with one another. Other advantageous developments of the invention are disclosed in the subclaims or result from the following description of preferred embodiments of the invention in conjunction with the accompanying figures.

Figure 1

shows a side view of a nozzle device according to an embodiment of the invention,

Figure 2

FIG. 13 shows a longitudinal sectional view along line AA of FIG Figure 1 ,

Figure 3

FIG. 13 shows a schematic plan view of an opening configuration of the nozzle device of FIG Figures 1 and 2 ,

Figure 4

shows a perspective view of a nozzle device according to an embodiment of the invention,

Figure 5

FIG. 13 shows a side view of the nozzle device of FIG Figure 4 ,

Figure 6

illustrates an application process with a nozzle device according to an embodiment of the invention,

Figure 7

shows a sectional view of a nozzle device according to an embodiment of the invention,

Figure 8

shows a side view of a plate holder for a nozzle device according to an embodiment of the invention,

Figure 9

shows a sectional view of a nozzle device according to an embodiment of the invention,

Figure 10

FIG. 11 shows a plan view of the nozzle device of FIG Figures 8 and 9 ,

Figure 11

FIG. 13 shows a sectional view of the nozzle device of FIG Figures 8 to 10 ,

Figure 12

shows a sectional view of a nozzle device according to an embodiment of the invention,

Figure 13

shows a side view of a nozzle device according to yet another embodiment of the invention,

Figure 14

FIG. 13 shows a sectional view of the nozzle device of FIG Figure 13 ,

Figure 15

FIG. 11 shows a sectional view of a counter plate for the nozzle device of FIG Figures 13 and 14 , and

Figure 16

shows an application process for sealing a standing seam according to the prior art.

The embodiments of the invention described with reference to the figures are partially identical, with similar or identical parts being provided with the same reference symbols, and for their explanation also to the description Reference is made to other embodiments or figures in order to avoid repetition.

Figure 1 shows a side view of a nozzle device 1 according to an embodiment of the invention, wherein Figure 2 an associated longitudinal sectional view along line AA of the Figure 1 shows and Figure 3 shows an associated plan view of the nozzle device 1.

The nozzle device 1 is described below with common reference to FIG Figures 1 to 3 described.

The nozzle device 1 is used to deliver a viscous application medium (e.g. PVC material; PVC: polyvinyl chloride) in the form of a jet S1 onto a component, in particular a motor vehicle component (e.g. a fold, an edge or a transition seam of the motor vehicle component) . The motor vehicle component is preferably a motor vehicle body. The nozzle device 1 is designed as a nozzle head, the nozzle head preferably being a one-piece, integral component and thus being able to be manufactured from a single piece.

The jet S1 is a flat jet and defines a jet width B1, B2, which expediently changes relative to the delivery direction P of the application medium.

The nozzle device 1 has an opening configuration 2 for forming a slot opening 3.1 by means of which the application medium is dispensed. The opening configuration 2 is defined on the delivery side by a spray edge structure 2.1, 2.2, 2.3, 2.4.

The opening configuration 2 and thus the slot opening 3.1 are expediently curved and concave and are oriented essentially at the end face to the motor vehicle component during the delivery of the application medium to the motor vehicle component.

Because the opening configuration 2 and thus the slot opening 3.1 are concave, the beam width B1, B2 is narrowed towards the delivery side A, so that the beam width B1, B2 is reduced relative to the delivery direction P of the application medium. The beam width B2 is accordingly smaller than the beam width B1.

The opening configuration 2 defines a beam plane for the beam S1, within which the beam S1 extends and within which the beam width B1, B2 narrows towards the delivery side A.

By narrowing the beam width B1, B2, the beam S1 can be bundled in such a way that when it strikes the motor vehicle component, it encloses (surrounds) it, so that the application medium advantageously does not have to be applied past the motor vehicle component and yet on two side surfaces of the motor vehicle component and can preferably meet its end face.

The beam S1 can particularly advantageously be bundled by narrowing the beam width B1, B2 in such a way that it is directed towards z. B. 3-sided enclosing application of the application medium on a fold, an edge or a transition seam of the motor vehicle component can be used.

The opening configuration 2 is concave relative to a longitudinal section AA along the opening configuration 2 and formed in a concave end face 4 of the nozzle device 1. The opening configuration 2 and thus the slot opening 3.1 are concave over at least almost their entire longitudinal extension L.

A material recess 5, 6 for supplying the application medium to the opening configuration 2 and thus to the slot opening 3.1 is incorporated into the nozzle device 1.

The material recess 5, 6 comprises a line section 5 and a chamber section 6 arranged downstream of the line section 5, the passage cross-section of the chamber section 6 being larger than the passage cross-section of the line section 5. The passage cross-section of the line section 5 can e.g. B. be shaped round (expediently by means of a bore) and the passage cross-section of the chamber section 6 can be substantially flat and slot-shaped.

The material recess 5, 6, in particular the chamber section 6, opens into the opening configuration 2 and, on the delivery side, forms the opening configuration 2 and thus the slot opening 3.1.

The Figures 4 and 5 show views of a nozzle device 1, which essentially corresponds to the nozzle device 1 of FIG Figures 1 to 3 corresponds to.

The Figures 4 and 5 show in particular a nozzle device 1 designed as a one-piece, integral nozzle head.

The opening configuration 2 and thus the slot opening 3.1 are expediently curved and concave and part of an equally expediently curved concave end face 4.

Figure 6 illustrates an application process with a z. B. as in the Figures 1 to 5 nozzle device 1 shown.

The nozzle device 1 is used to dispense a viscous application medium in the form of a jet S1 onto a component 100, preferably a motor vehicle component 100, in particular onto a standing seam of the motor vehicle component 100. The opening configuration 2 and thus the slot opening 3.1 are essentially at the front during the dispensing of the application medium aligned to the standing seam.

Because the opening configuration 2 narrows the beam width B1, B2 towards the delivery side A, the beam S1 hits the end face, but also the two side faces of the standing seam.

The opening configuration 2 thus enables the application medium to be applied to the standing seam, in particular on 3 sides.

Figure 7 shows a sectional view of a nozzle device 1 according to another embodiment of the invention.

The nozzle device 1 of Figure 7 is essentially like the nozzle device of the Figures 1 to 5 educated.

A special feature, however, is that a protruding horn structure 7.1, 7.2 is arranged on both sides outside next to the opening configuration 2 and the horn structure 7.1, 7.2 comprises at least two inwardly shaped inner flanks 8.1, 8.2.

The inner flanks 8.1, 8.2 act on the application medium dispensed from the slot opening 3.1 in such a way that the narrowing the beam width B1, B2 is supported and the application medium is deflected inward.

The Figures 8 to 11 relate to a nozzle device 10 according to another embodiment of the invention.

Figure 8 shows a side view of a plate holder 11 preferably comprising two clamping parts (for example clamping plates). Figure 9 FIG. 13 shows a sectional view along line BB of FIG Figure 8 . Figure 10 shows a corresponding plan view and Figure 11 FIG. 13 shows a sectional view of the nozzle device 10 along line AA of FIG Figure 10 .

The nozzle device 10 is described below with common reference to FIGS Figures 8 to 11 described.

The nozzle device 10 is used, essentially identical to the nozzle device 1, to deliver a viscous application medium in the form of a jet S1 onto a motor vehicle component.

The nozzle device 10 comprises, likewise essentially identical to the nozzle device 1, an opening configuration 2 for forming a slot opening 3.1 for dispensing the application medium. The opening configuration 2 is expediently concave in order to narrow the jet width B1, B2 towards the delivery side A.

The beam S1 can here, for. B. as in the Figures 2 , 6th or 7th shown.

A special feature of the nozzle device 10, however, is that the nozzle device 10 is not designed as a one-piece, integral nozzle head, but as a nozzle plate with a counter-plate 13 to be arranged next to the nozzle plate. The nozzle device 10 and the counter plate 13 are arranged between the two clamping parts of the plate holder 11 to be held and fixed thereby. A fixation 12 is used to clamp the two clamping parts of the plate holder 11 and thus the nozzle device 10 and the counter plate 13.

The counter-plate 13 is concave on the delivery side in a complementary manner to the opening configuration 2 and serves to close the opening configuration 2 and thus the slot opening 3.1 and the material recess 5, 6 in the circumferential direction.

The nozzle device 10 can optionally include the horn structure 7, 1, 7.2.

The material recess 5, 6 can also optionally have inner flanks F1, F2 on both sides in order to deflect the delivery medium inwardly to the slot opening 3.1.

Figure 12 Fig. 10 shows a sectional view of a nozzle device 10 according to another embodiment of the invention. The nozzle device 10 of the Figure 12 resembles the in Figure 11 nozzle device 10 shown and is thus designed as a nozzle plate.

A special feature, however, is that the opening configuration 2 of the nozzle device 10 of the Figure 12 comprises two slot openings 3.1, 3.2 for the delivery of a viscous application medium in the form of two jets S1, S2.

The two beams S1, S2 define a beam width B1, B2 comprising the two beams S1, S2.

The opening configuration 2 is concave so that the beam width B1, B2 comprising the two beams S1, S2 is narrowed towards the delivery side A. The Openings 3.1, 3.2 are oriented inwards through the concave opening configuration 2, so that the beams S1, S2 approach one another towards the delivery side A.

To form or separate the two slot openings 3.1, 3.2, the opening configuration 2 comprises a dividing section T.

In the Figure 12 The horn structure to be seen (7.1, 7.2) and the inner flanks (F1, F2) of the material recess 5, 6 are optional

Figure 13 shows a side view of a nozzle device 10 designed as a nozzle plate together with a complementary counterplate 13 according to yet another embodiment of the invention. The Figure 14 FIG. 10 shows a sectional view of the nozzle device 10 of FIG Figure 13 and Figure 15 FIG. 13 shows a sectional view of the counter plate 13 of FIG Figure 13 .

Similar to the other nozzle devices 1 and 10, a narrowing of the jet width B1, B2 towards the delivery side A can also be effected in this embodiment.

During the delivery of the application medium, the opening configuration 2 and thus the slot opening 3.1 and a motor vehicle component 100, in particular z. B. a fold, an edge or a transition seam, essentially aligned with one another at the front. Nevertheless, due to the narrowing of the jet width B1, B2 towards the delivery side A, the application medium strikes two side surfaces 101, 102 and an end surface 103 of the motor vehicle component 100.

The invention is not restricted to the preferred embodiments described above. Rather, it is a multitude of variants and modifications that fall within the scope of protection are possible.

List of reference symbols:

1

Nozzle device, preferably nozzle head

2

Opening configuration

2.1

Spray edge

2.2

Spray edge

2.3

Spray edge

2.4

Spray edge

3.1

Slot opening, preferably for beam S1

3.2

Slot opening, preferably for beam S2

4th

Front side

5

Material recess, in particular line section

6th

Material recess, in particular chamber section

7.1

Horn structure

7.2

Horn structure

8.1

Inner flank (horn structure)

8.2

Inner flank (horn structure)

10

Nozzle device, preferably nozzle plate

11

Plate holder

12th

Fixation

13th

Counter plate

S1

Jet, preferably flat jet

S2

Jet, preferably flat jet

A.

Delivery side

B1

Beam width

B2

Beam width

F1

Inner flank (material recess)

F2

Inner flank (material recess)

P

Delivery direction of the application medium

L.

Longitudinal extension

T

Division section

100

Component, preferably a motor vehicle component

101

Side face

102

Side face

103

Face

Claims (18)

1. Nozzle device (1, 10) for dispensing a viscous application medium in the form of at least one jet (S1, S2) onto a component (100), preferably for encompassing application of the application medium onto a fold, an edge or a transition joint of the component (100), the at least one jet (S1, S2) defining a jet width (B1, B2), comprising:

   an opening configuration (2) for forming at least one slit opening (3.1, 3.2) for dispensing the application medium,

   wherein the opening configuration (2) is formed concave in order to bring about a narrowing of the jet width (B1, B2) toward the dispensing side (A), and with a material cut-out (5, 6) incorporated into the nozzle device (1, 10) for feeding the application medium to the opening configuration (2) and thus to the at least one slit opening (3.1, 3.2), characterized in that the material cut-out (5, 6) comprises a conduit section (5) and a chamber section (6) arranged downstream of the conduit section (5), wherein the chamber section (6) opens into the opening configuration (2) and the passage cross-section of the chamber section (6) is larger than the passage cross-section of the conduit section (5).
2. Nozzle device (1, 10) according to claim 1, characterised in that the opening configuration (2) is formed in an end side (4) of the nozzle device (1, 10) and the end side (4) is formed concave, and/or that the opening configuration (2) is formed concave relative to a longitudinal section (A-A) along the opening configuration (2) .
3. Nozzle device (1, 10) according to claim 1 or 2, characterised in that the opening configuration (2) and thus the at least one slit opening (3.1, 3.2) and/or an end side (4) of the nozzle device (1, 10), in which the opening configuration (2) is formed, is formed concavely curved, preferably over at least almost its entire longitudinal extent (L).
4. Nozzle device (1, 10) according to one of the preceding claims, characterised in that the opening configuration (2) is defined by a spraying edge structure (2.1, 2.2, 2.3, 2.4), from which the application medium is sprayable.
5. Nozzle device (1, 10) according to any of the preceding claims, characterised in that the material cut-out (5, 6) opens in the opening configuration (2) and thus on the dispensing side forms the opening configuration (2) and thus the at least one slit opening (3.1, 3.2).
6. Nozzle device (1, 10) according to any of the preceding claims, characterised in that by means of the material cut-out (5, 6) the application medium is distributable over the longitudinal extent (L) of the opening configuration (2).
7. Nozzle device (1, 10) according to any of the preceding claims, characterised in that the material cut-out (5, 6) is formed flat and/or round in cross-section.
8. Nozzle device (1) according to any of the preceding claims, characterised in that the material cut-out (5, 6) has inner flanks (F1, F2) on both sides in order to deflect the dispensing medium inwardly to the at least one slit opening (3.1, 3.2).
9. Nozzle device (1, 10) according to one of the preceding claims, characterised in that on both sides externally beside the opening configuration (2), a protruding horn structure (7.1, 7.2) is arranged and the horn structure (7.1, 7.2) comprises at least two inwardly formed inner flanks (8.1, 8.2), wherein the inner flanks (8.1, 8.2) preferably act upon the application medium issued from the at least one slit opening (3.1, 3.2) in order to support the narrowing of the jet width (B1, B2) and/or to deflect the application medium inwardly.
10. Nozzle device (1, 10) according to one of the preceding claims, characterised in that the opening configuration (2) comprises at least two slit openings (3.1, 3.2) for dispensing at least two jets (S1, S2), wherein

    - the at least two slit openings (3.1, 3.2) are directed inwardly so that the at least two jets (S1, S2) approach one another toward the dispensing side (A), and/or

    - the at least two jets (S1, S2) define a jet width (B1, B2) encompassing the at least two jets (B1, B2), and wherein the opening configuration (2) is formed concave in order to cause a narrowing of the jet width (B1, B2) encompassing the at least two jets (S1, S2) toward the dispensing side (A).
11. Nozzle device (1, 10) according to one of the preceding claims, characterised in that the opening configuration (2) comprises at least one dividing portion (T) for forming or separating at least two slit openings (3.1, 3.2) for dispensing at least two jets (S1, S2).
12. Nozzle device (1) according to one of the preceding claims, characterised in that the nozzle device is configured as a nozzle head (1) and the nozzle head (1) preferably represents a single-piece integral component.
13. Nozzle device (10) according to one of the claims 1 to 11, characterised in that the nozzle device (10) is configured as a nozzle plate (10).
14. Nozzle device (10) according to claim 13, characterised in that the nozzle device (10) comprises a counterplate (13) for arrangement beside the nozzle plate (10), wherein the counterplate (13) preferably comprises at least one of the following features:

    a) configured to close the opening configuration (2) and thus the at least one slit opening (3.1, 3.2) in the peripheral direction,

    b) configured to close the material cut-out (5, 6) in the peripheral direction,

    c) formed concave on the dispensing side complementary to the opening configuration (2).
15. Nozzle device (1, 10) according to one of the preceding claims, characterised in that the at least one jet (S1, S2) is at least one flat jet and the opening configuration (2) defines a jet plane for the at least one flat jet within which jet plane the at least one flat jet extends and within which the jet width (B1, B2) narrows toward the dispensing side (A).
16. Nozzle device (1, 10) according to one of the preceding claims, characterised in that the opening width of the opening configuration (2) and/or of the at least one slit opening (3.1, 3.2) has a value transversely to its longitudinal extent (L) of between 0.2 mm and 0.5 mm.
17. Method for dispensing a viscous application medium in the form of at least one jet (S1, S2) onto a component (100), preferably for encompassing application of the application medium onto a fold, an edge or a transition joint of the component (100), the at least one jet (S1, S2) defining a jet width (B1, B2), with a nozzle device (1, 10) according to one of the preceding claims.
18. Method according to claim 17, characterised in that the opening configuration (2) and the fold, the edge or the transition joint are oriented substantially at the end side toward one another during the dispensing of the application medium and the application medium nevertheless impacts on two side faces (101, 102) and preferably an end face (103) of the fold, the edge or the transition joint.

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