EP3388151B1 - Nozzle head for application of an insulation material - Google Patents

Description

The invention relates to a nozzle head for dispensing a flat spray jet of a coating agent, in particular an insulating material for the insulation of motor vehicle body components.

Such a nozzle head is known per se from the prior art and consists essentially of two identical outer plates and a thin, smaller center plate, which is inserted between the two outer plates, wherein FIG. 8 an embodiment of such a conventional center plate 1 shows. The center plate 1 has spraying off an end edge 2 with a substantially V-shaped contour, so that between the adjacent outer plates and the front edge 2 of the center plate 1, a nozzle chamber is formed, in which the insulating material is introduced. In this way, a flat, fan-shaped spray jet forms, which is well suited for the application of the insulating material. Furthermore, it should be mentioned that the middle plate 2 has on both sides slots 3, 4 for the passage of screws in order to screw the outer plates to the middle plate 1.

In this known nozzle head, the jet width - if the volume flow is kept constant - in the beam plane from a certain minimum distance in front of the nozzle head distance independent almost constant. For example, the beam width then varies only in a range of ± 2 mm. This distance-independent constant beam width is particularly advantageous in the treatment of strongly curved component surfaces, since it is then not necessary to maintain a constant distance between the nozzle head and the component surface when driving off the component surface. However, it should be mentioned here that the beam width varies depending on the volume flow of the applied insulating material, which is also acceptable within the scope of the invention.

Furthermore, it is off US 3,716,194 a nozzle head for discharging a spray jet of a cleaning agent is known which extends substantially flat in a jet plane and thereby has a certain beam width. The known nozzle head has two outer plates and an intermediate middle plate with outer tips on both sides and a central recess.

The general state of the art should also be pointed to the JP 2000 237 679 A . US 2003/0155451 A1 . DE 10 2005 013 972 A1 and DE 10 2005 027 236 A1 ,

A disadvantage of the known nozzle head described above is the fact that the distance-independence of the beam width is given only within a relatively narrow volume flow working range. On the other hand, outside of this volumetric flow operating range, the beam width varies relatively strongly as a function of the distance to the nozzle head. An operation is therefore possible in practice only within the relatively narrow volume flow working range.

The invention is therefore based on the object to improve the above-described conventional nozzle head accordingly. Thus, the nozzle head according to the invention should be suitable for different volume flows of the insulating material, wherein the beam width should remain constant as independent as possible of the distance to the nozzle head.

This object is advantageously achieved by a nozzle head according to the invention according to claim 1.

The invention preferably comprises the general technical teaching to design the nozzle head expedient so that the suitable for an application volume flow working range with the essentially independent of the distance, a constant jet width of the spray jet has a volume flow range of at least ± 5 cm ³ / s, ± 10 cm ³ / s, ± 15 cm ³ / s, ± 20 cm ³ / s, ± 25 cm ³ / s, ± 40 cm ³ / s, ± 80 cm ³ / s or ± 90 cm ³ / s. This means, in particular, that the jet width of the spray jet at a certain minimum distance (eg 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm or 100mm) is substantially constant independent of distance, as long as the volume flow is within the relatively wide volume flow working range.

To avoid misunderstandings, it should again be mentioned that the jet width can also vary in the case of the nozzle head according to the invention as a function of the volume flow of the applied application medium. In the context of the invention, therefore, the beam width is only independent of the distance to the nozzle head from the minimum distance, whereas the beam width can also vary in the nozzle head according to the invention as a function of the volume flow.

To avoid misunderstandings, it should be pointed out that the jet width of the spray jet can also vary in the case of the nozzle head according to the invention as a function of the volume flow of the application medium. If, however, the volume flow is kept substantially constant within the volume flow working range, then the jet width in the nozzle head according to the invention is essentially constant independent of the distance from the minimum distance.

The volume flow or outflow rate can be, for example, 10 cm ³ / s, 20 cm ³ / s, 30 cm ³ / s, 40 cm ³ / s, 50 cm ³ / s, 60 cm ³ / s, 70 cm ³ / s, 80 cm ³ / s, 90 cm ³ / s or 100 cm ³ / s, in each case preferably ± 5 cm ³ / s, ± 10 cm ³ / s or ± 15 cm ³ / s.

It should also be mentioned that the beam width is not exactly constant even in the case of the nozzle head according to the invention. Rather, the jet width can also vary in the nozzle head of the invention depending on the distance to the nozzle head fluctuations of ± 1mm, ± 2mm, ± 4mm, ± 6mm, ± 8mm, 10mm, ± 12mm, ± 14mm or even ± 16mm. This means, in particular, that in the context of the invention the feature "substantially independent of distance" may suitably include deviations of up to ± 16 mm.

The nozzle head according to the invention is therefore much better suited for automated application by means of an application robot, the nozzle head being guided by the application robot over the component surface. Namely, when programming the application robot when using a nozzle head according to the invention, it can be assumed that the spray jet has a substantially constant jet width, namely at different volume flows of the application means, provided that the volume flow during the application is kept constant.

In a particularly preferred embodiment of the invention, the beam width is substantially constant independent of distance, starting at a certain minimum distance to the nozzle head, in particular with a deviation of ± 2 mm, ± 4 mm, ± 6 mm, ± 8 mm, ± 10 mm, ± 12 mm, ± 14 mm or even at most ± 16mm, wherein the beam width is only substantially constant independent of distance from the minimum distance, if the volume flow of the application medium is within a certain volumetric flow working range and is expediently kept constant.

It is possible that the nozzle head is in particular designed so that the volume flow working range with the substantially distance-independent constant beam width a Volumetric flow range of at least ± 5 cm ³ / s, ± 10 cm ³ / s, ± 15 cm ³ / s, ± 20 cm ³ / s, ± 25 cm ³ / s, ± 40 cm ³ / s, ± 80 cm ³ / s or ± 90 cm ³ / s.

In a preferred embodiment of the invention, the nozzle head has a similar structure as the conventional nozzle head described above. The nozzle head according to the invention therefore preferably also has two outer plates and a middle plate, which is arranged between the two outer plates and spraying side has an end edge with a predetermined contour. The two outer plates thus preferably delimit with their spray-off end edge a slot-shaped nozzle opening, wherein expediently between the outer plates and the spray-off front edge of the middle plate is a nozzle chamber into which the application agent to be applied is introduced. The innovation according to the invention consists in the fact that the contour of the spray-off-side end edge of the middle plate is shaped such that the volume flow working region is relatively large with the beam width being substantially constant independent of the distance.

In contrast to the initially described and in FIG. 8 shown conventional center plate, the front edge of the center plate in the nozzle head according to the invention is not simply V-shaped, but has a more complicated contour.

Thus, the spray-side end edge of the center plate preferably on both sides outside tips that protrude in Absprührichtung, wherein the length of the tips is preferably at least 3 mm, 4 mm or even at least 5 mm.

The tips of the center plate preferably have an outer edge which is substantially parallel to the beam direction or is aligned at right angles to the base of the center plate. The inner edge of the tips, however, is preferably angled at an acute angle to the beam direction. For example, the inner edges of the tips may include an angle in the range of 15 ° -35 ° with the beam direction, with an angle of 24.165 ° or 28.3 ° has been found to be particularly advantageous. However, it is within the scope of the invention, the possibility that the inner edges of the tips are aligned parallel to the beam direction or perpendicular to the base of the center plate.

In addition, the middle plate has a recess in the center, which, however, does not extend over the entire width of the middle plate, but only over a width of, for example, at least 15 mm, 17 mm or 20 mm.

The centrally arranged recess of the middle plate is substantially V-shaped.

Preferably, a variant is used in which the recess in the center plate comprises a central arc portion having a first radius and two adjacent outer arc portions having a second radius, wherein the second radius of the outer arc portions is greater than the first radius of the central arc portion. For example, the first radius of the central arc portion may be in the range of 2 mm - 10 mm, with a value of 5 mm being preferred. The second radius of the outer arc sections of the recess, however, is preferably in the range of 10 mm - 30 mm, with a value of 20 mm is preferred.

Furthermore, the center plate on both sides between the outer tips and the central recess each have a straight edge region, which is substantially is aligned at right angles to the Absprührichtung, wherein the straight edge regions preferably have a width of at least 3 mm, 4 mm, 5 mm or 6 mm.

The straight edge portions of the center plate are preferably located at a height above the base of the middle plate, which is in a certain relation to the plate height of the middle plate. Thus, the ratio of the plate height of the center plate to the height of the straight edge portions is preferably in the range of 1.4 to 1.6, with a value of 1.5 being preferred.

In technical experiments, it has been found that such a shaping of the spray-side end edge of the middle plate has a positive influence on the spray jet emitted, so that it has a substantially constant beam width independent of the distance within a relatively large volume flow working region.

It should also be mentioned that even with the nozzle head according to the invention, the outer plates preferably have spraying-side end edges, which are curved convexly in the direction of discharge, as is also the case in the prior art. The above-mentioned tips of the center plate then preferably terminate with the ends of the curved end edge of the outer plate. This means that the tips of the center plate do not protrude beyond the outer contour of the outer plates.

In addition, the nozzle head according to the invention preferably comprises a plate holder for holding the outer plates and the middle plate inserted between the outer plates, wherein the plate holder preferably has an adjustable receiving width to accommodate different thickness plates can. In the conventional described above On the other hand, the nozzle holder has a groove with a constant groove width, wherein the plate package consisting of the outer plates and the middle plate is inserted into the groove and then clamped. This has the disadvantage in the case of the conventional nozzle head described at the outset that the plate holder can only accommodate one plate pack of a specific thickness. If now a thinner center plate to be used to change the spray behavior, so thicker outer plates must be used so that the thickness of the entire plate package is not changed. In the disk holder according to the invention, however, the receiving width is adjustable so that different thickness plate packs can be added. This offers the advantage that different thickness middle plates can be used without the thickness of the outer plates must be adjusted accordingly.

In a preferred embodiment of the invention, the plate holder consists of two clamping plates, which are connected to each other via a compression fitting, so that the outer plates can be clamped with the middle plate between the clamping plates. The compression fitting allows different thicknesses of the clamped plate package with the outer plates and the center plate.

In addition, the plate holder preferably has a bottom plate, on which the two clamping plates are placed. For example, one of the two clamping plates can be fixed immovably on the bottom plate, while the other clamping plate is movable by means of the compression fitting in order to clamp the plate pack of outer plates and center plate can. In this case, the base plate preferably has a material bore in the region between the two clamping plates in order to supply the application medium. The plate package with the outer plates and the middle plate is in this case over the material bore in the bottom plate and therefore can absorb the supplied via the material bore application agent. Preferably, the material bore is in this case provided with a seal (eg, O-ring) to seal the gap between the material bore and the plate package lying thereon. This also distinguishes the nozzle head according to the invention from the conventional nozzle head described above, in which the plate pack of outer plates and middle plate rests only flat over the material bore, which can lead to sealing problems. It should be mentioned that the outer plates and / or the middle plate have a material guide, which emanates from the material bore in the bottom plate and opens into the nozzle space between the two outer plates. This material guide may for example consist of a groove which is arranged in the two outer plates and extending from the lower end edge starting in Absprührichtung and extends into the nozzle chamber, which is bounded by the two outer plates and the spray-off end edge of the center plate.

The above-mentioned bottom plate of the plate holder is preferably mounted on a mounting plate, wherein the mounting plate can be moved by an application robot, for which purpose the mounting plate is mounted, for example, on a flange plate of a robot's hand axis. The connection between the bottom plate and the mounting plate takes place here by a releasable mechanical connection, such as by a screw.

It is advantageous if the bottom plate can be mounted in different angular positions relative to the mounting plate. For example, this can be an additional pin connection between the bottom plate and the mounting plate be provided so that the bottom plate can be mounted in two different angular positions between the bottom plate and the mounting plate.

In the description of the conventional nozzle head was mentioned in the beginning that the middle plate has slots to screw the center plate with the outer plates can. However, such slots are disadvantageous in a cleaning of the nozzle head with water and subsequent blowing off with air, as can accumulate in the slots water, which can be removed only with difficulty by blowing off with air. In the nozzle head according to the invention, the elongated holes in the middle plate or in the outer plates are therefore preferably replaced by holes that are less prone to contamination.

Furthermore, it should be mentioned that the outer contour of the plate holder is preferably chosen so that after emergence from a water bath during the cleaning of the nozzle head, the water can be blown off as quickly as possible and without much effort. The plate holder therefore preferably closes laterally substantially flush with the middle plate and the outer plates, in order to avoid a contamination-prone interference contour.

With regard to the dimensions of the nozzle head according to the invention, it should be mentioned that the middle plate preferably has a plate thickness in the range of 0.2 mm to 0.6 mm, with a range of 0.4 mm to 0.5 mm being preferred.

In one embodiment of the nozzle head according to the invention, the outer plates have a width of 42 mm and a height in the discharge direction of 28.8 mm. In this embodiment The middle plate preferably also has a width of 42 mm and a height of 19.5 mm.

However, the middle plate and the outer plates can be scaled arbitrarily in width and / or height, for example, to change the spray jet width accordingly.

For example, the height of the outer panels and also the middle panel can be reduced by a factor of, for example, 1.2, with the width remaining the same, so that the outer panels have a height of 24 mm, while the center panel has a height of 16.25 mm. As a result, the beam width can be reduced with the same material flow.

In another variant, on the other hand, only the width of the outer plates and the middle plate are scaled down by a factor of, for example, 1.2, whereas the height of the outer plates and the middle plate remains unchanged. For example, the outer panels may then have a height of 28.8 mm while the center panel has a height of 19.5 mm.

In another embodiment, however, the basic contour remains the same as in the basic version described above. In this case, only the outer tips that guide the insulating material to the nozzle gap, pushed from an outer dimension of 42 mm continuously inward until they reach the new external dimension of at least 35 mm. Furthermore, the outer plates are shortened laterally and the outer radius of the Au βenplatten is moved so far down until the outer radius again meets the tips of the center plate. By this modification, the beam width is slightly reduced at high outflow rate.

In another variant of the invention, however, only the outer plates are modified from the basic version described above by the convex curved spray-side end edge of the outer plates is lowered, so that reduces the height of the outer plates, for example, from 28.8 mm to 24 mm.

Finally, in the context of the invention, a modification compared to the previously last described variant is conceivable, wherein the outer plates are scaled down in width and height in the same ratio to the width of 35 mm. By contrast, the center plate is only scaled to 35 mm in width, with the outer tips of the middle plate being adjusted to the radius of the outer plates. With this modification, an outflow rate of about 45 cm ³ / s can be realized with a beam width of about 60 mm.

In a preferred embodiment of the invention, the center plate has a plate height in the beam direction which is in the range of 15 mm-20 mm, with a value of 19.5 mm being preferred. On the other hand, the outer plates preferably have a plate height in the beam direction which is in the range of 25-34 mm, with a value of 29.24 mm being preferred.

It should also be noted that the plate height of the middle plate is preferably in a certain ratio to the plate width of the middle plate, which ratio is preferably in the range of 0.4-0.5, with a value of 0.464 being preferred.

In a preferred embodiment, it is particularly possible that in a range between a minimum distance to the nozzle head of about 30mm, 40mm or 50mm plus at least 10mm, 20mm, 30mm, 40mm, 50mm, 60mm or 70mm the beam width varies by a maximum of ± 4mm, ± 6mm, ± 8mm, ± 10mm or ± 12mm.

It should also be mentioned that the invention is not limited to the above-described nozzle head according to the invention as a single component. Rather, the invention also includes a complete application robot with such a nozzle head.

Finally, the invention also encompasses the novel use of such a nozzle head for the application of an insulating agent to a body component.

Figur 1

eine Seitenansicht eines erfindungsgemäßen Düsenkopfs parallel zur Ebene des Spritzstrahls,

Figur 2

eine Frontansicht des erfindungsgemäßen Düsenkopfs aus Figur 1 rechtwinklig zur Ebene des Spritzstrahls,

Figur 3

eine Frontansicht einer Außenplatte des Düsenkopfs aus den Figuren 1 und 2,

Figur 4

eine Frontansicht der Mittelplatte des Düsenkopfs aus den Figuren 1 bis 3,

Figur 5

eine schematische Darstellung zur Verdeutlichung der Form des Spritzstrahls bei dem erfindungsgemäßen Düsenkopf,

Figur 6

eine Abwandlung der Außenplatte gemäß Figur 3,

Figur 7

eine Abwandlung der Mittelplatte gemäß Figur 4,

Figur 8

eine Frontansicht einer herkömmlichen Mittelplatte eines Düsenkopfs gemäß dem Stand der Technik.

Other advantageous developments of the invention are characterized in the subclaims or are explained in more detail below together with the description of the preferred embodiment of the invention with reference to the figures. Show it:

FIG. 1

a side view of a nozzle head according to the invention parallel to the plane of the spray jet,

FIG. 2

a front view of the nozzle head according to the invention FIG. 1 perpendicular to the plane of the spray jet,

FIG. 3

a front view of an outer plate of the nozzle head from the FIGS. 1 and 2 .

FIG. 4

a front view of the center plate of the nozzle head from the FIGS. 1 to 3 .

FIG. 5

a schematic representation to illustrate the shape of the spray jet in the nozzle head according to the invention,

FIG. 6

a modification of the outer panel according to FIG. 3 .

FIG. 7

a modification of the center plate according to FIG. 4 .

FIG. 8

a front view of a conventional center plate of a nozzle head according to the prior art.

The FIGS. 1 to 5 show a nozzle head 5 according to the invention for the application of an insulating material (eg water-based acrylate) on a component, such as a motor vehicle body component.

The nozzle head 5 is partially conventional and comprises two outer plates 6, 7 and a thin middle plate 8, which is inserted between the two outer plates 6, 7, wherein the contour of the outer plates 6, 7 in FIG. 3 is shown while FIG. 4 the contour of the middle plate 8 shows.

In addition, the nozzle head 5 according to the invention comprises a plate holder for mechanically holding the plate package consisting of the outer plates 6, 7 and the middle plate 8. This plate holder comprises two clamping plates 9, 10, which are arranged on both sides of the consisting of the outer plates 6, 7 and the middle plate 8 plate pack and can be clamped together by means of a compression fitting 11 to fix the plate package mechanically. It should be mentioned that between the two clamping plates 9, 10 differently thick plate packs can be used, so that the thickness of the center plate 8 changed in a simple manner can be without the thickness of the outer plates 6, 7 must be adjusted accordingly.

Furthermore, the plate holder comprises a bottom plate 12, wherein the two clamping plates 9, 10 are arranged on the upper side of the bottom plate 12.

Furthermore, the plate holder comprises a mounting plate 13, which is guided by an application robot, which is shown here only schematically.

Out FIG. 3 is further seen that the outer plates 6, 7 each have a material guide 16, 17, wherein the material guide 16 or 17 consists of a groove which projects from the lower end edge of the outer plate 6 and 7 in Abspritzrichtung upwards. The insulating material is thus supplied via the material bore 14 and then penetrates into the material guides 16, 17, so that the insulating material then finally passes into the nozzle chamber, which laterally bounded by the two outer plates 6, 7 and bottom of a front edge 18 of the center plate 8 becomes.

Of particular importance is still the contour of the front edge 18 of the center plate 8, said contour from the detail view in FIG. 4 is apparent.

Thus, the front edge 18 of the middle plate 8 on both sides outside a projecting in the direction of discharge tip 19 and 20 respectively.

In addition, the front edge 18 of the middle plate 8 has a centrally substantially V-shaped recess 21, wherein the V-shaped recess 21 does not extend over the entire width b of the central plate 8.

Finally, the outer contour of the front edge 18 of the middle plate 8 on both sides of the V-shaped recess 21 each have a straight edge region 22, 23, wherein the straight edge regions 22, 23 are aligned at right angles to the spray direction.

The above-described contour of the end edge 18 of the middle plate 8 has the advantage that the nozzle head 5 according to the invention has a spray jet 24 with a substantially constant jet width SB, as in particular FIG. 5 evident. Although the jet width SB of the spray jet 24 depends on a distance d to the nozzle head 5. By contrast, within a relatively large working range AB, the beam width SB varies by at most ± 2 mm and is thus essentially constant, provided the volume flow of the applied insulating agent is kept constant during application.

It should also be mentioned that the outer plates 6, 7 preferably have a height ha = 28.8 mm, while the middle plate 8 has a height of hm = 19.5 mm.

By contrast, both the outer plates 6, 7 and the middle plate 8 have a uniform width of b = 42 mm.

The middle plate 8 closes here together with the outer plates 7 in the plate holder flush with the outer contour of the plate holder, whereby a pollution-prone interference contour is avoided.

In addition, the outer plates 6, 7 and the middle plate 8 instead of those in the prior art according to FIG. 8 existing slots 3, 4 each holes 25-28, the are less prone to contamination than the conventional slots 3, 4. The holes 25-28 serve here as in the prior art according to FIG. 8 for carrying out the compression fitting 11.

From the FIGS. 1 and 2 is also apparent that the bottom plate 12 can be connected by a screw connection to the mounting plate 13. Here, the bottom plate 12 can be mounted in two different, mutually perpendicular angular positions on the mounting plate 13. To define these two angular positions, a pin connection 30 is additionally provided, which allows only the two desired angular positions. For example, the pin connection 30 may consist of a pin on top of the mounting plate 13 and two mating holes in the underside of the bottom plate 12, where the pin may be selectively inserted into one of the two holes.

FIG. 6 shows a modification of the outer plate 7 according to Figure 3, wherein the modification largely with the embodiment described above FIG. 3 to avoid repetition, reference is made to the above description, the same reference numerals being used for corresponding details.

A special feature of this embodiment is that the holes 25, 26 are formed in the outer plate 7 as laterally open slots.

Another special feature is that the outer plate 7 has a width b = 42 mm and a height ha = 29.24 mm.

FIG. 7 shows a modification of the center plate 8 according to FIG. 4 In order to avoid repetition, reference is made to the above description, wherein the same reference numerals are used for corresponding details.

A special feature of this modification, in turn, is that instead of the bores 27, 28 laterally open slots are provided.

Another peculiarity of this embodiment is that the recess 21 in the middle plate 8 comprises a central arc section R1 and two adjacent outer arc sections R2, wherein the outer arc sections R2 have a radius of 20 mm, while the central arc section R1 has a radius of 5 mm having.

It should also be mentioned that the tips 19, 20 each have outer flanks which are aligned parallel to the beam direction.

The inner flanks of the two tips 19, 20, however, are angled at an angle of 28.3 ° acute angle to the beam direction.

The invention is not limited to the preferred embodiment described above. Rather, a variety of variants and modifications is possible, which also make use of the inventive idea and therefore fall within the scope. In addition, the invention also claims protection for the features and the subject of the dependent claims, regardless of the claims taken in each case.

1. 1. Düsenkopf (5) zur Abgabe eines Spritzstrahls (24) eines Auftragsmittels, insbesondere eines Dämmstoffmittels, wobei
   1. a) ein bestimmter Volumenstrom des Auftragsmittels durch den Spritzstrahl (24) appliziert wird,
   2. b) der Spritzstrahl (24) im Wesentlichen flach in einer Strahlebene verläuft, und
   3. c) der Spritzstrahl (24) in der Strahlebene eine bestimmte Strahlbreite (SB) aufweist, die von dem Volumenstrom des Auftragsmittels abhängt,
      gekennzeichnet durch
   4. d) zwei Außenplatten (6, 7), und
   5. e) eine Mittelplatte (8), die zwischen den beiden Außenplatten (6, 7) angeordnet ist und abspritzseitig eine Stirnkante (18) mit einer vorgegebenen Kontur aufweist, wobei
   6. f) die Mittelplatte (8) beidseitig außen Spitzen (19, 20) aufweist, die in Abspritzrichtung hervorstehen, und
   7. g) die Mittelplatte (8) mittig eine Ausnehmung (21) aufweist.
2. 2. Düsenkopf (5) nach Absatz 1, dadurch gekennzeichnet, dass
   1. a) die Strahlbreite (SB) ab einem bestimmten Mindestabstand (d) zu dem Düsenkopf (6) abstandsunabhängig im Wesentlichen konstant ist, insbesondere mit einer Abweichung von höchstens ±2mm, ±4mm, ±6mm, ±8mm oder ±10mm, und
   2. b) die Strahlbreite (SB) nur dann ab dem Mindestabstand (d) abstandsunabhängig im Wesentlichen konstant ist, wenn der Volumenstrom des Auftragsmittels innerhalb eines bestimmten Volumenstromarbeitsbereichs liegt und konstant gehalten wird, und
   3. c) vorzugsweise der Düsenkopf (5) so ausgebildet ist, dass der Volumenstromarbeitsbereich mit der im Wesentlichen abstandsunabhängig konstanten Strahlbreite (SB) einen Volumenstrombereich von mindestens ±10 cm³/s, ±15 cm³/s, ±20 cm³/s, ±25 cm³/s, ±40 cm³/s, ±80 cm³/s oder ±90 cm³/s umfasst.
3. 3. Düsenkopf (5) nach Absatz 1 oder 2, gekennzeichnet durch
   1. a) eine schlitzförmige Düsenöffnung, die von den abspritzseitigen Stirnkanten der beiden Außenplatten (6, 7) begrenzt wird,
   2. b) einen Düsenraum zwischen der abspritzseitig Stirnkante (18) der Mittelplatte (8) und den beiden Außenplatten (6, 7),
   3. c) wobei die Kontur der abspritzseitigen Stirnkante (18) der Mittelplatte (8) so geformt ist, dass der Volumenstromarbeitsbereich mit der im Wesentlichen abstandsunabhängig konstanten Strahlbreite (SB) einen Volumenstrombereich von mindestens ±10 cm³/s, ±15 cm³/s, ±20 cm³/s, ±25 cm³/s, ±40 cm³/s, ±80 cm³/s oder ±90 cm³/s umfasst.
4. 4. Düsenkopf (5) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet,
   1. a) dass der Volumenstromarbeitsbereich mit der im Wesentlichen abstandsunabhängig konstanten Strahlbreite (SB) einen Volumenstrombereich von 10 cm³/s bis 200 cm³/s umfasst, und/oder
   2. b) dass der Mindestabstand (d) zu dem Düsenkopf (6) mindestens 10mm, 20mm, 30mm, 40mm, 60mm, 80mm, 100mm, 150mm oder 200mm beträgt, wobei die Strahlbreite (SB) ab dem Mindestabstand im Wesentlichen abstandsunabhängig konstant ist, sofern der Volumenstrom innerhalb des Volumenstromarbeitsbereichs liegt.
5. 5. Düsenkopf (5) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet,
   1. a) dass die Spitzen (19, 20) in Abspritzrichtung eine Länge von mindestens 3mm, 4mm oder 5mm aufweisen, und/oder
   2. b) dass die Spitzen (19, 20) ein äußere Flanke aufweisen, die im Wesentlichen parallel zur Strahlrichtung verläuft, und/oder
   3. c) dass die Spitzen (19, 20) innere Flanken aufweisen, die einen Winkel von mindestens 15°, 20°, 22°, 24°, 24° oder 26° zur Strahlrichtung einschließen, insbesondere einen Winkel von 24,165° oder 28,3°, und/oder
   4. d) dass die Spitzen (19, 20) innere Flanken aufweisen, die einen Winkel von höchstens 35°, 30°, 26° oder 25° zur Strahlrichtung einschließen, insbesondere einen Winkel von 24,165° oder 28,3°, und/oder
   5. e) dass die Ausnehmung (21) rechtwinklig zur Abspritzrichtung eine Breite von mindestens 15mm, 17mm oder 20mm aufweist, und/oder
   6. f) dass die Mittelplatte (8) beidseitig zwischen den außen liegenden Spitzen (19, 20) und der mittigen Ausnehmung (21) jeweils einen gerade Kantenbereich (22, 23) aufweist, der im Wesentlichen rechtwinklig zur Abspritzrichtung ausgerichtet ist, und/oder
   7. g) dass die geraden Kantenbereiche (22, 23) quer zur Abspritzrichtung jeweils eine Breite von mindestens 3mm, 4mm, 5mmm oder 6mm aufweisen.
6. 6. Düsenkopf (6) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Ausnehmung (21) im Wesentlichen V-förmig ist.
7. 7. Düsenkopf nach Absatz 6, dadurch gekennzeichnet,
   1. a) dass die Ausnehmung einen mittigen Bogenabschnitt mit einem ersten Radius (R1) und zwei angrenzende äußere Bogenabschnitte mit einem zweiten Radius (R2) aufweist, und/oder
   2. b) dass der zweite Radius (R2) der äußeren Bogenabschnitte größer ist als der erste Radius (R1) des mittigen Bogenabschnitts, und/oder
   3. c) dass der erste Radius (R1) des mittigen Bogenabschnitts größer ist als 2mm, 3mm oder 4mm, und/oder
   4. d) dass der erste Radius (R1) des mittigen Bogenabschnitts kleiner ist als 10mm, 8mm oder 6mm, und/oder
   5. e) dass der zweite Radius (R2) der äußeren Bogenabschnitte größer ist als 10mm, 15mm oder 18mm, und/oder
   6. f) dass der zweite Radius der äußeren Bogenabschnitte kleiner ist als 30mm, 25mm oder 21mm, und/oder
   7. g) dass der erste Radius (R1) des mittigen Bogenabschnitts im Wesentlichen 5mm und der zweite Radius (R2) der äußeren Bogenabschnitte im Wesentlichen 20mm ist.
8. 8. Düsenkopf (5) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet,
   1. a) dass die Außenplatten (6, 7) abspritzseitig jeweils eine Stirnkante aufweisen, die konvex in Abspritzrichtung gekrümmt ist, und
   2. b) dass die Spitzen (19, 20) der Mittelplatte (8) jeweils mit den Enden der gekrümmten Stirnkante der Außenplatten (6, 7) abschließen.
9. 9. Düsenkopf (6) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet,
   1. a) dass die geraden Kantenbereiche (22, 23) in Strahlrichtung in einer bestimmten ersten Höhe (h1) über der Basis der Mittelplatte (8) angeordnet sind,
   2. b) dass die Mittelplatte (8) eine bestimmte Plattenhöhe (hm) in Strahlrichtung aufweist,
   3. c) dass das Verhältnis zwischen der Plattenhöhe (hm) der Mittelplatte (8) und der ersten Höhe (h1) der geraden Kantenbereiche (22, 23) im Bereich von 1,4-1,6 liegt, insbesondere bei einem Wert von 1,5.
10. 10. Düsenkopf (5) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet,
    1. a) dass der Düsenkopf (5) zur Halterung der Außenplatten (6, 7) und der Mittelplatte (8) einen Plattenhalter aufweist, und
    2. b) dass der Plattenhalter eine einstellbare Aufnahmebreite aufweist, um unterschiedlich dicke Platten aufnehmen zu können.
11. 11. Düsenkopf (5) nach Absatz 10, dadurch gekennzeichnet, dass der Plattenhalter zwei Klemmplatten (9, 10) aufweist, die über eine Klemmverschraubung miteinander verbunden sind, so dass die Außenplatten (6, 7) mit der Mittelplatte (8) zwischen den Klemmplatten (9, 10) klemmbar sind.
12. 12. Düsenkopf (5) nach Absatz 11, dadurch gekennzeichnet,
    1. a) dass der Plattenhalter eine Bodenplatte (12) aufweist, auf welche die beiden Klemmplatten aufgesetzt sind,
    2. b) dass die Bodenplatte (12) im Bereich zwischen den beiden Klemmplatten eine Materialbohrung aufweist, um das Auftragsmittel zuzuführen,
    3. c) dass die Materialbohrung mit einer Dichtung versehen ist, insbesondere mit einem Dichtungsring,
    4. d) dass in zumindest einer der Außenplatten (6, 7) und/oder in der Mittelplatte (8) eine Materialführung angeordnet ist, die von der Materialbohrung in der Bodenplatte (12) ausgeht und in den Düsenraum zwischen den beiden Außenplatten (6, 7) mündet.
13. 13. Düsenkopf (5) nach einem der Absätze 10 bis 12, dadurch gekennzeichnet,
    1. a) dass der Plattenhalter eine Bodenplatte (12) aufweist, welche die Außenplatten (6, 7) und die Mittelplatte (8) trägt,
    2. b) dass der Plattenhalter eine Montageplatte (13) trägt, um den Düsenkopf (5) an einem Roboter montieren zu können,
    3. c) dass die Bodenplatte (12) durch eine lösbare mechanische Verbindung an der Montageplatte (13) angebracht ist, insbesondere durch eine Verschraubung,
    4. d) dass die Bodenplatte (12) in verschiedenen Winkelstellungen relativ zu der Montageplatte (13) montierbar ist.
14. 14. Düsenkopf (5) nach Absatz 13, gekennzeichnet durch eine formschlüssige Verbindung (30), insbesondere eine Stiftverbindung oder eine Nut-Feder-Verbindung zwischen der Bodenplatte (12) und der Montageplatte (13), wobei die formschlüssige Verbindung (30) zwei verschiedene Winkelstellungen zwischen der Bodenplatte (12) und der Montageplatte (13) ermöglicht.
15. 15. Düsenkopf (5) nach einem der Absätze 10 bis 14, dadurch gekennzeichnet, dass die Mittelplatte (8) und/oder die Außenplatte(6, 7) zur Montage in dem Plattenhalter jeweils mindestens eine Bohrung (25-29) aufweisen, um ein verschmutzungsanfälliges Langloch zu vermeiden.
16. 16. Düsenkopf (5) nach einem der Absätze 10 bis 15, dadurch gekennzeichnet, dass der Plattenhalter seitlich mit der Mittelplatte (8) und den Außenplatten (6, 7) im Wesentlichen bündig abschließt, um eine verschmutzungsanfällige Störkontur zu vermeiden.
17. 17. Düsenkopf (5) nach einem der vorhergehenden Absätze, dadurch gekennzeichnet,
    1. a) dass die Mittelplatte (8) eine Plattenstärke von mindestens 0,2mm oder mindestens 0,4mm aufweist, und/oder
    2. b) dass die Mittelplatte (8) eine Plattenstärke von höchsten 0,6mm oder höchstens 0,5mm aufweist, und/oder
    3. c) dass die Mittelplatte (8) eine Plattenhöhe in Strahlrichtung von mindestens 15mm, 17mm oder 19mm und/oder höchsten 24mm, 22mm oder 20mm aufweist, insbesondere mit einem Wert von 19,5mm, und/oder
    4. d) dass die Außenplatten (6, 7) eine Plattenhöhe in Strahlrichtung von mindestens 25mm, 27mm oder 29mm und/oder höchsten 30mm, 32mm oder 34mm aufweist, insbesondere mit einem Wert von 29,24mm, und/oder
    5. e) dass die Mittelplatte (8) eine bestimmte Plattenbreite (b) und eine bestimmte Plattenhöhe (hm) in Strahlrichtung aufweist, wobei das Verhältnis zwischen der Plattenhöhe (hm) und der Plattenbreite (b) im Wesentlichen im Bereich von 0,4-0,5 liegt, insbesondere mit einem Wert von 0,464.
18. 18. Applikationsroboter mit mehreren beweglichen Roboterachsen, die einen Düsenkopf (5) nach einem der vorhergehenden Absätze führen.
19. 19. Verwendung eines Düsenkopfs (5) nach einem der Absätze 1 bis 17 zur Applikation eines Dämmstoffmittels auf ein Karosseriebauteil.

The invention also includes in particular the following items:

1. 1. nozzle head (5) for discharging a spray jet (24) of a coating agent, in particular an insulating material, wherein
   1. a) a certain volume flow of the application agent is applied by the spray jet (24),
   2. b) the spray jet (24) extends substantially flat in a jet plane, and
   3. c) the spray jet (24) has a specific jet width (SB) in the jet plane which depends on the volume flow of the coating agent,
      marked by
   4. d) two outer plates (6, 7), and
   5. e) a central plate (8) which is arranged between the two outer plates (6, 7) and has a spray-discharge side end edge (18) with a predetermined contour, wherein
   6. f) the center plate (8) on both sides outside tips (19, 20) which protrude in Abspritzrichtung, and
   7. g) the center plate (8) has a central recess (21).
2. 2. nozzle head (5) according to paragraph 1, characterized in that
   1. a) the beam width (SB) from a certain minimum distance (d) to the nozzle head (6) is substantially independent of distance, in particular with a maximum deviation of ± 2mm, ± 4mm, ± 6mm, ± 8mm or ± 10mm, and
   2. b) the beam width (SB) is substantially constant independent of the distance from the minimum distance (d) only if the volume flow of the application medium is within a certain volumetric flow working range and is kept constant, and
   3. c) preferably the nozzle head (5) is formed so that the volume flow working range with the substantially constant distance independent beam width (SB) has a volume flow range of at least ± 10 cm ³ / s, ± 15 cm ³ / s, ± 20 cm ³ / s, ± 25 cm ³ / s, ± 40 cm ³ / s, ± 80 cm ³ / s or ± 90 cm ³ / s.
3. 3. nozzle head (5) according to paragraph 1 or 2, characterized by
   1. a) a slot-shaped nozzle opening, which is bounded by the discharge-side end edges of the two outer plates (6, 7),
   2. b) a nozzle space between the discharge side end edge (18) of the middle plate (8) and the two outer plates (6, 7),
   3. c) wherein the contour of the discharge-side end edge (18) of the center plate (8) is shaped so that the volume flow working range with the substantially constant distance independent beam width (SB) has a volume flow range of at least ± 10 cm ³ / s, ± 15 cm ³ / s , ± 20 cm ³ / s, ± 25 cm ³ / s, ± 40 cm ³ / s, ± 80 cm ³ / s or ± 90 cm ³ / s.
4. 4. nozzle head (5) according to one of the preceding paragraphs, characterized
   1. a) that the volume flow working range with the substantially distance-independent constant beam width (SB) comprises a volume flow range of 10 cm ³ / s to 200 cm ³ / s, and / or
   2. b) that the minimum distance (d) to the nozzle head (6) at least 10mm, 20mm, 30mm, 40mm, 60mm, 80mm, 100mm, 150mm or 200mm, wherein the beam width (SB) from the minimum distance substantially independent of distance is constant if the volume flow is within the volume flow working range.
5. 5. nozzle head (5) according to one of the preceding paragraphs, characterized
   1. a) that the tips (19, 20) in Abspritzrichtung have a length of at least 3mm, 4mm or 5mm, and / or
   2. b) that the tips (19, 20) have an outer edge, which runs substantially parallel to the beam direction, and / or
   3. c) that the tips (19, 20) have inner flanks enclosing an angle of at least 15 °, 20 °, 22 °, 24 °, 24 ° or 26 ° to the beam direction, in particular an angle of 24.165 ° or 28.3 °, and / or
   4. d) that the tips (19, 20) have inner flanks, which enclose an angle of at most 35 °, 30 °, 26 ° or 25 ° to the beam direction, in particular an angle of 24.165 ° or 28.3 °, and / or
   5. e) that the recess (21) at right angles to the direction of ejection has a width of at least 15mm, 17mm or 20mm, and / or
   6. f) that the middle plate (8) on both sides between the outer tips (19, 20) and the central recess (21) each have a straight edge region (22, 23) which is aligned substantially perpendicular to the injection direction, and / or
   7. g) that the straight edge regions (22, 23) transversely to the Abspritzrichtung each have a width of at least 3mm, 4mm, 5mmm or 6mm.
6. 6. nozzle head (6) according to one of the preceding paragraphs, characterized in that the recess (21) is substantially V-shaped.
7. 7. nozzle head according to paragraph 6, characterized
   1. a) that the recess has a central arc portion with a first radius (R1) and two adjacent outer arc portions with a second radius (R2), and / or
   2. b) that the second radius (R2) of the outer arcuate portions is greater than the first radius (R1) of the central arcuate portion, and / or
   3. c) that the first radius (R1) of the central arc portion is greater than 2mm, 3mm or 4mm, and / or
   4. d) that the first radius (R1) of the central arc portion is smaller than 10mm, 8mm or 6mm, and / or
   5. e) that the second radius (R2) of the outer arc sections is greater than 10mm, 15mm or 18mm, and / or
   6. f) that the second radius of the outer arc sections is smaller than 30mm, 25mm or 21mm, and / or
   7. g) that the first radius (R1) of the central arcuate portion is substantially 5mm and the second radius (R2) of the outer arcuate portions is substantially 20mm.
8. 8. nozzle head (5) according to one of the preceding paragraphs, characterized
   1. a) that the outer plates (6, 7) on the injection side each have an end edge, which is curved convexly in the injection direction, and
   2. b) that the tips (19, 20) of the center plate (8) each terminate with the ends of the curved end edge of the outer plates (6, 7).
9. 9. nozzle head (6) according to one of the preceding paragraphs, characterized
   1. a) that the straight edge regions (22, 23) are arranged in the beam direction at a specific first height (h1) above the base of the middle plate (8),
   2. b) that the center plate (8) has a certain plate height (hm) in the beam direction,
   3. c) that the ratio between the plate height (hm) of the central plate (8) and the first height (h1) of the straight edge regions (22, 23) is in the range 1.4-1.6, in particular at a value of 1, 5th
10. 10. nozzle head (5) according to one of the preceding paragraphs, characterized
    1. a) that the nozzle head (5) for holding the outer plates (6, 7) and the middle plate (8) has a plate holder, and
    2. b) that the plate holder has an adjustable receiving width to accommodate different thickness plates can.
11. 11. The nozzle head (5) according to paragraph 10, characterized in that the plate holder has two clamping plates (9, 10) which are interconnected via a compression fitting, so that the outer plates (6, 7) with the center plate (8) between the Clamping plates (9, 10) are clamped.
12. 12. nozzle head (5) according to paragraph 11, characterized
    1. a) that the plate holder has a bottom plate (12), on which the two clamping plates are placed,
    2. b) that the bottom plate (12) has a material bore in the area between the two clamping plates in order to supply the application medium,
    3. c) that the material bore is provided with a seal, in particular with a sealing ring,
    4. d) that in at least one of the outer plates (6, 7) and / or in the middle plate (8), a material guide is arranged, from the material bore in the bottom plate (12) goes out and opens into the nozzle space between the two outer plates (6, 7).
13. 13. nozzle head (5) according to any one of paragraphs 10 to 12, characterized
    1. a) that the plate holder has a bottom plate (12) which carries the outer plates (6, 7) and the middle plate (8),
    2. b) that the plate holder carries a mounting plate (13) in order to mount the nozzle head (5) on a robot,
    3. c) that the bottom plate (12) by a releasable mechanical connection to the mounting plate (13) is mounted, in particular by a screw,
    4. d) that the bottom plate (12) in different angular positions relative to the mounting plate (13) can be mounted.
14. 14. nozzle head (5) according to paragraph 13, characterized by a positive connection (30), in particular a pin connection or a tongue and groove connection between the bottom plate (12) and the mounting plate (13), wherein the positive connection (30) two various angular positions between the bottom plate (12) and the mounting plate (13) allows.
15. 15. Nozzle head (5) according to any one of paragraphs 10 to 14, characterized in that the center plate (8) and / or the outer plate (6, 7) for mounting in the plate holder each have at least one bore (25-29) to to avoid a dirty long hole.
16. 16. Nozzle head (5) according to any one of paragraphs 10 to 15, characterized in that the plate holder laterally with the center plate (8) and the outer plates (6, 7) is substantially flush in order to avoid a contamination-prone interference contour.
17. 17. Nozzle head (5) according to one of the preceding paragraphs, characterized
    1. a) that the middle plate (8) has a plate thickness of at least 0.2 mm or at least 0.4 mm, and / or
    2. b) that the middle plate (8) has a thickness of at most 0.6 mm or at most 0.5 mm, and / or
    3. c) that the middle plate (8) has a plate height in the beam direction of at least 15mm, 17mm or 19mm and / or highest 24mm, 22mm or 20mm, in particular with a value of 19.5mm, and / or
    4. d) that the outer plates (6, 7) has a plate height in the beam direction of at least 25mm, 27mm or 29mm and / or the highest 30mm, 32mm or 34mm, in particular with a value of 29.24mm, and / or
    5. e) that the middle plate (8) has a certain plate width (b) and a certain plate height (hm) in the beam direction, the ratio between the plate height (hm) and the plate width (b) substantially in the range of 0.4-0 , 5, in particular with a value of 0.464.
18. 18. Application robot having a plurality of movable robot axes, which guide a nozzle head (5) according to one of the preceding paragraphs.
19. 19. Use of a nozzle head (5) according to any one of paragraphs 1 to 17 for the application of an insulating material on a body component.

Claims (18)

1. A nozzle head (5) for emitting a spray jet (24) of an application agent, in particular of an insulating agent, wherein

   a) a specific volumetric flow of the application agent is applied by the spray jet (24),

   b) the spray jet (24) extends essentially flat in a jet plane, and

   c) the spray jet (24) has in the jet plane a specific jet width (SB), which depends on the volumetric flow of the application agent,
   comprising

   d) two outer plates (6, 7), and

   e) a middle plate (8), which is disposed between the two outer plates (6, 7) and has a front edge (18) on the spraying side with a predetermined contour, wherein

   f) the middle plate (8) has outer tips (19, 20) on both sides which protrude in the spraying direction, and

   g) the middle plate (8) has an essentially V-shaped recess (21) in the middle,
   wherein

   h) the middle plate (8) has on both sides between the outer tips (19, 20) and the recess (21) in the middle a respective straight edge area (22, 23), which is aligned essentially at right angle with respect to the spraying direction.
2. The nozzle head (5) according to claim 1, characterized in that

   a) the jet width (SB) is from a certain minimum distance (d) to the nozzle head (5) distance-independently essentially constant, in particular with a deviation of maximal ±2 mm, ±4 mm, ±6 mm, ±8 mm or ±10 mm, and

   b) the jet width (SB) is from the minimum distance (d) distance-independently essentially constant only if the volumetric flow of the application agent is within a specific volumetric flow operating range and is kept constant, and

   c) preferably, the nozzle head (5) is formed in such a way that the volumetric flow operating range with the essentially distance-independently constant jet width (SB) comprises a volumetric flow range of at least ±10 cm³/s, ±15 cm³/s, ±20 cm³/s, ±25 cm³/s, ±40 cm³/s, ±80 cm³/s or ±90 cm³/s.
3. The nozzle head (5) according to claim 1 or 2, characterized by

   a) a slit-shaped nozzle opening, which is delimited by the spraying-side front edges of the two outer plates (6, 7),

   b) a nozzle chamber between the spraying-side front edge (18) of the middle plate (8) and the two outer plates (6, 7),

   c) wherein the contour of the spraying-side front edge (18) of the middle plate (8) is formed in such a way that the volumetric flow operating range with the essentially distance-independently constant jet width (SB) comprises a volumetric flow range of at least ±10 cm³/s, ±15 cm³/s, ±20 cm³/s, ±25 cm³/s, ±40 cm³/s, ±80 cm³/s or ±90 cm³/s.
4. The nozzle head (5) according to any one of the preceding claims, characterized

   a) in that the volumetric flow operating range with the essentially distance-independently constant jet width (SB) comprises a volumetric flow range of 10 cm³/s to 200 cm³/s, and/or

   b) in that the minimum distance (d) to the nozzle head (5) is at least 10 mm, 20 mm, 30 mm, 40 mm, 60 mm, 80 mm, 100 mm, 150 mm or 200 mm, wherein the jet width (SB) is from the minimum distance essentially distance-independently constant if the volumetric flow is within the volumetric flow operating range.
5. The nozzle head (5) according to any one of the preceding claims,
   characterized in

   a) that the tips (19, 20) have in the spraying direction a length of at least 3 mm, 4 mm or 5 mm, and/or

   b) that the tips (19, 20) have an outer flank, which extends essentially parallel to the jet direction, and/or

   c) that the tips (19, 20) have inner flanks, which include an angle of at least 15°, 20°, 22°, 24°, 24°, or 26° with respect to the jet direction, in particular an angle of 24.165° or 28.3°, and/or

   d) that the tips (19, 20) have inner flanks, which include an angle of maximal 35°, 30°, 26° or 25° with respect to the jet direction, in particular an angle of 24.165° or 28.3°, and/or

   e) that the recess (21) has, at right angle to the spraying direction, a width of at least 15 mm, 17 mm or 20 mm, and/or

   f) that the straight edge areas (22, 23) each have, transverse to the spraying direction, a width of at least 3 mm, 4 mm, 5 mm or 6 mm.
6. The nozzle head (5) according to any one of the preceding claims, characterized

   a) in that the recess has a central arch section with a first radius (R1) and two adjacent outer arch sections with a second radius (R2),

   b) in that the second radius (R2) of the outer arch sections is greater than the first radius (R1) of the central arch section, and/or

   c) in that the first radius (R1) of the central arch section is larger than 2 mm, 3 mm or 4 mm, and/or

   d) in that the first radius (R1) of the central arch section is smaller than 10 mm, 8 mm or 6 mm, and/or

   e) in that the second radius (R2) of the outer arch sections is larger than 10 mm, 15 mm or 18 mm, and/or

   f) in that the second radius of the outer arch sections is smaller than 30 mm, 25 mm or 21 mm, and/or

   g) in that the first radius (R1) of the central arch section is essentially 5 mm and the second radius (R2) of the outer arch sections is essentially 20 mm.
7. The nozzle head (5) according to any one of the preceding claims, characterized

   a) in that the outer plates (6, 7) each have a front edge on the spraying side which is curved in a convex manner in the spraying direction, and

   b) in that the tips (19, 20) of the middle plate (8) each terminates with the ends of the curved front edge of the outer plates (6, 7).
8. The nozzle head (5) according to any one of the preceding claims,
   characterized

   a) in that the straight edge areas (22, 23) are arranged at a specific first height (h1) in the jet direction above the base of the middle plate (8),

   b) in that the middle plate (8) has a specific plate height (hm) in the jet direction,

   c) in that the ratio between the plate height (hm) of the middle plate (8) and the first height (h1) of the straight edge areas (22, 23) is in the range of 1.4-1.6, in particular has a value of 1.5.
9. The nozzle head (5) according to any one of the preceding claims,
   characterized

   a) in that the nozzle head (5) has a plate holder for holding the outer plates (6, 7) and the middle plate (8), and

   b) in that the plate holder has an adjustable accommodation width in order to allow accommodation of plates with different thicknesses.
10. The nozzle head (5) according to claim 9, characterized in that the plate holder has two clamping plates (9, 10), which are connected with each other by means of a clamping screw-connection, so that the outer plates (6, 7) with the middle plate (8) can be clamped between the clamping plates (9, 10) .
11. The nozzle head (5) according to claim 10, characterized

    a) in that the plate holder has a bottom plate (12) onto which both clamping plates are placed,

    b) in that the bottom plate (12) has a material bore in the area between the two clamping plates in order to supply the application agent,

    c) in that the material bore is provided with a seal, in particular with a sealing ring,

    d) in that a material guide is arranged in at least one of the outer plates (6, 7) and/or the middle plate (8), which starts from the material bore in the bottom plate (12) and opens out into the nozzle chamber between the two outer plates (6, 7).
12. The nozzle head (5) according to any one of claims 9 to 11,
    characterized in that

    a) the plate holder has a bottom plate (12), which carries the outer plates (6, 7) and the middle plate (8),

    b) the plate holder carries a mounting plate (13) in order to allow mounting of the nozzle head (5) on a robot,

    c) the bottom plate (12) is attached by means of a releasable mechanical connection to the mounting plate (13), particularly by screwing,

    d) the bottom plate (12) can be mounted in different angular positions relative to the mounting plate (13).
13. The nozzle head (5) according to claim 12, characterized by a form-fitting connection (30), in particular a pin connection or a tongue-and-groove connection between the bottom plate (12) and the mounting plate (13), wherein the form-fitting connection (30) allows two different angular positions between the bottom plate (12) and the mounting plate (13).
14. The nozzle head (5) according to any one of claims 9 to 13, characterized in that the middle plate (8) and/or the outer plate (6, 7) each have at least one bore (25-29) for mounting in the plate holder in order to avoid an elongated hole, which is prone to soiling.
15. The nozzle head (5) according to any one of claims 9 to 14, characterized in that the plate holder terminates sidewards essentially flush with the middle plate (8) and the outer plates (6, 7) in order to prevent an interfering contour prone to soiling.
16. The nozzle head (5) according to any one of the preceding claims, characterized

    a) in that the middle plate (8) has a plate thickness of at least 0.2 mm or at least 0.4 mm, and/or

    b) in that the middle plate (8) has a plate thickness of maximal 0.6 mm or maximal 0.5 mm, and/or

    c) in that the middle plate (8) has a plate height in the jet direction of at least 15 mm, 17 mm or 19 mm and/or of maximal 24 mm, 22 mm or 20 mm, in particular with a value of 19.5 mm, and/or

    d) in that the outer plates (6, 7) have a plate height in the jet direction of at least 25 mm, 27 mm or 29 mm and/or of maximal 30 mm, 32 mm or 34 mm, in particular with a value of 29.24 mm, and/or

    e) in that the middle plate (8) has a specific plate width (b) and a specific plate height (hm) in the jet direction, wherein the ratio between the plate height (hm) and the plate width (b) is essentially in the range of 0.4-0.5, in particular with a value of 0.464.
17. An application robot with a plurality of movable robot axes, which guide a nozzle head (5) according to any one of the preceding claims.
18. Use of a nozzle head (5) according to any one of the claims 1 to 16 for the application of an insulating agent to a vehicle body component.

Images