EP3402599B1 - Plaque perforée présentant une distance plus importante entre les trous dans une ou les deux zones de bord d'une série de buses - Google Patents

Plaque perforée présentant une distance plus importante entre les trous dans une ou les deux zones de bord d'une série de buses Download PDF

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Publication number
EP3402599B1
EP3402599B1 EP17700769.7A EP17700769A EP3402599B1 EP 3402599 B1 EP3402599 B1 EP 3402599B1 EP 17700769 A EP17700769 A EP 17700769A EP 3402599 B1 EP3402599 B1 EP 3402599B1
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EP
European Patent Office
Prior art keywords
hole
perforated plate
nozzle row
fluid
application device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17700769.7A
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German (de)
English (en)
Other versions
EP3402599A1 (fr
Inventor
Hans-Georg Fritz
Benjamin WÖHR
Marcus Kleiner
Moritz BUBEK
Timo Beyl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr Systems AG
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Duerr Systems AG
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Filing date
Publication date
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Publication of EP3402599A1 publication Critical patent/EP3402599A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0291—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work the material being discharged on the work through discrete orifices as discrete droplets, beads or strips that coalesce on the work or are spread on the work so as to form a continuous coating

Definitions

  • the invention relates to a perforated plate (for example a panel) for an application device (for example an application device) for applying a fluid serving as a coating agent to a motor vehicle body and / or an attachment therefor.
  • the invention also relates to an application device and an application method in which such a perforated plate is used.
  • a perforated plate for an application device for in particular overspray-free application of a coating agent is already known.
  • the perforated plate comprises several through holes for applying the coating agent, the through holes being arranged in several rows of nozzles in the form of a matrix and thus in a 2-dimensional configuration.
  • sharp-edged coating agent webs can be produced.
  • a disadvantage of this, however, is that the sharp-edged coating agent webs are unsuitable for overlapping, since they have an at least almost rectangular cross-sectional profile.
  • Figure 13 shows e.g. B. an almost perfect joint of two coating agent webs B1 * and B2 * with a rectangular cross-sectional profile.
  • FIG. 14 shows two coating agent webs B1 * and B2 * with a rectangular cross-sectional profile that do not touch or overlap in the joint / overlap area, resulting in an in Figure 14 disadvantageous dent shown on the right in the resulting coating.
  • Figure 15 shows two coating material webs B1 * and B2 * with a rectangular cross-sectional profile, which overlap in the joint / overlap area in such a way that an overcoating occurs, which leads to an in Figure 15 disadvantageous mountain or elevation shown on the right in the resulting coating.
  • an application device which discloses a cross-sectional profile in the form of a trapezoid that is more suitable for the overlapping of coating material webs.
  • the trapezoidal profile is generated by several through holes for applying the coating agent, the through holes being arranged in several rows of nozzles in the form of a matrix and thus in a 2-dimensional configuration.
  • the 2-dimensional configuration, with nozzle diameters of the same or different sizes, and the trapezoidal profile created by it, are initially very complex due to the large number of through holes.
  • the 2-dimensional configuration results in an undesirably high flow of coating agent, in particular when the coating agent is applied continuously, as is customary when coating motor vehicle bodies.
  • the 2-dimensional configuration also means that when a coating agent web is applied, coating agent is applied from a row of nozzles downstream relative to the direction of movement onto coating agent from a row of nozzles upstream relative to the direction of movement, which can disadvantageously lead to coating agent splashes because Coating agent strikes not yet sufficiently dried or solidified coating agent.
  • DE 10 2011 056 823 A1 discloses a nozzle device for a furnace for the heat treatment of steel sheets or the like.
  • This nozzle device consists essentially of a supply pipe of circular cross-section with a gas supply connection and a number of nozzle openings for outflowing gas.
  • the nozzle openings in two edge regions of the supply pipe can have a greater mutual spacing than the nozzle openings in the central region of the nozzle pipe.
  • One object of the invention is to create an improved and / or alternative perforated plate, in particular a perforated plate, which enables an improved abutment or overlap area of two fluid paths and / or an at least substantially fluid splash-free application of fluid.
  • the invention creates a perforated plate (e.g. cover, strip, plate, etc.) for an application device (e.g. an application device) for applying a fluid used as a coating agent to a motor vehicle body and / or an attachment for this.
  • an application device e.g. an application device
  • the perforated plate and / or the application device is used in particular for the application of the fluid without atomization and / or masking.
  • the fluid used as a coating agent can in particular be a lacquer, a sealant, a release agent, a functional layer or an adhesive.
  • the fluid preferably has a viscosity of greater than 50 mPas, greater than 80 mPas or even greater than 100 mPas, in particular measured at a shear rate of 1000 s -1 . It can Fluid have a Newtonian or a non-Newtonian flow behavior.
  • the perforated plate has at least four or at least five through holes for the passage of the fluid.
  • the through holes are expediently arranged in a preferably essentially linearly aligned row of nozzles, the row of nozzles having two edge regions and a central region expediently extending between the two edge regions.
  • the through holes are spaced apart from one another by hole spacings.
  • the perforated plate is characterized in that the at least one outer hole spacing of the row of nozzles in at least one edge area is greater than at least one hole spacing in the central area, so that a fluid application (e.g. fluid path) with a substantially trapezoidal cross-sectional profile is possible, e.g. B. substantially right-angled, isosceles or unequal-sided trapezoidal cross-sectional profile and / or substantially Gaussian-shaped cross-sectional profile.
  • a fluid application e.g. fluid path
  • substantially trapezoidal cross-sectional profile e.g. B. substantially right-angled, isosceles or unequal-sided trapezoidal cross-sectional profile and / or substantially Gaussian-shaped cross-sectional profile.
  • the at least one outer hole spacing corresponds in particular to the first hole spacing from the outside of the row of nozzles in the at least one edge region.
  • the at least two, at least three and / or at least four outer hole spacings correspond in particular to the two, three and / or four first hole spacings of the nozzle row in the at least one edge region.
  • the gradation and thus appropriate enlargement of the hole spacing can only be done for the outermost and thus the one from the outside first hole spacing in only one edge area or both edge areas.
  • the gradation and thus appropriate hole spacing enlargement can, however, also take place via the at least two, at least three and / or at least four outermost and thus at least two, at least three and / or at least four from the outside first hole spacings in only one edge area or both edge areas.
  • a fluid application e.g. fluid path
  • an essentially right-angled trapezoidal cross-sectional profile can preferably be generated.
  • a fluid application e.g. fluid path
  • a substantially equal-sided or unequal-sided trapezoidal cross-sectional profile can preferably be produced.
  • the invention enables in particular an improved layer thickness distribution in the joint or overlap area of two fluid applications (e.g. fluid paths), which leads to optically uniform fluid surfaces (e.g. coating surfaces), expediently without layer thickness fluctuations that would be disadvantageous to the human eye.
  • the invention enables in particular that application splashes are reduced or completely avoided by applying the fluid from preferably only a single row of nozzles and thus a 1-dimensional nozzle configuration, because the row of nozzles applies the fluid directly to the component, possibly with the exception of a possible impact - or overlap area of two fluid applications, the above in the butt or overlap area Applied fluid is usually already sufficiently dried or solidified and therefore no longer tends, or at least only to a greatly reduced extent, to fluid splashes.
  • a distance tolerance between two appropriately sharp-edged fluid applications e.g. fluid paths
  • two appropriately sharp-edged fluid applications e.g. fluid paths
  • a distance tolerance between two appropriately sharp-edged fluid applications of up to +/- 150 ⁇ m, +/- 200 ⁇ m, +/- 500 ⁇ m, +/- 1 mm or even +/- 2 mm can be reached.
  • the perforated plate prefferably has only a single row of nozzles for applying the fluid, so that a 1-dimensional nozzle configuration can preferably be made possible.
  • the row of nozzles prefferably be centered linearly and / or center axes preferably of all through holes of the row of nozzles to be linearly aligned, e.g. B. along one and the same alignment line (useful straight alignment).
  • the outermost hole spacing of the row of nozzles in at least one edge area can expediently have the largest hole spacing of the row of nozzles.
  • the at least two outer hole spacings of the nozzle row in at least one edge area can be greater than at least one hole spacing in the central area.
  • the at least two outermost hole spacings in at least one edge area can, for. B. uniform (expediently essentially the same size) or inconsistent (expediently different sizes).
  • the central area has at least three or at least four hole spacings and thus expediently at least four or at least five through holes.
  • the at least one edge area can, for. B. have at least two or at least three hole spacings.
  • the hole spacings in the central area can be uniform (expediently essentially the same size), so that the through holes in the central area are evenly spaced from one another.
  • the through holes in the central area can expediently be designed uniformly.
  • outermost hole spacing in one edge area of the row of nozzles prefferably uniform (e.g. essentially the same) or non-uniform (e.g. different) relative to the outermost hole spacing in the other edge area.
  • the at least two outermost hole spacings in one edge area of the row of nozzles are uniform (e.g. essentially the same) or non-uniform (e.g. different) relative to the at least two outermost hole distances in the other edge area.
  • the at least one outermost hole spacing in one edge area is greater than at least one hole spacing in the central area and the at least one outermost hole spacing in the other edge area can be uniform (e.g. essentially large) relative to the at least one hole spacing in the central area.
  • All through holes of the row of nozzles each have a hole opening on the upstream side of the perforated plate and a hole opening on the downstream side of the perforated plate and a pipe stub as a three-dimensional structure on the downstream side of the perforated plate.
  • the hole openings can, for. B. have a larger passage cross-section than the hole openings and / or the pipe stubs can expediently have an outer jacket surface which tapers towards the free end of the respective pipe stub, in particular conically.
  • the two edge areas can e.g. B. be symmetrical or asymmetrical.
  • the row of nozzles is preferably designed symmetrically overall, in particular axially symmetrical and / or mirror-symmetrically relative to an axis of symmetry running transversely to the row of nozzles.
  • the outer hole spacing in at least one edge area is at most a factor of 2 or 3 greater than a hole spacing in the central area.
  • the at least two outer hole spacings of the row of nozzles in at least one edge area are in each case a maximum of a factor of 2 or 3 greater than one hole spacing in the central area.
  • At least one through hole in the middle area of the row of nozzles and / or at least one through hole in at least one edge area of the row of nozzles has a funnel-shaped hole opening and preferably a cylindrical hole opening.
  • the funnel-shaped opening of the hole preferably tapers in the direction of flow of the fluid.
  • the funnel-shaped opening of the hole of the at least one through hole in the central area can, for. B. lead deeper into the perforated plate than the funnel-shaped opening of the hole of the at least one through hole in the at least one edge region.
  • an inlet cross-section e.g.
  • the inlet-side passage cross-section) of a hole opening of at least one through-hole in the middle area of the nozzle row can be larger than an inlet cross-section (e.g. the inlet-side passage cross-section) of a hole opening of at least one through-hole in at least one edge area of the nozzle row.
  • the row of nozzles is designed to form a fluid application (z. B. fluid path) with a substantially trapezoidal cross-sectional profile, z. B. substantially right-angled, isosceles or unequal-sided trapezoidal cross-sectional profile and / or substantially Gaussian-shaped cross-sectional profile, so that the row of nozzles is particularly suitable for generating overlap-optimized fluid paths.
  • the hole openings of the through holes of the row of nozzles have a larger flow cross section than the hole opening.
  • the invention is not limited to a perforated plate, but also includes an application device, e.g. B. an application device for applying a fluid, the application device having at least one perforated plate as disclosed herein.
  • an application device e.g. B. an application device for applying a fluid, the application device having at least one perforated plate as disclosed herein.
  • the application device prefferably be designed to ensure a pressure-equal flow of fluid over the entire row of nozzles and thus expediently over all through holes.
  • the application device prefferably be designed to ensure a fluid flow to the at least one edge area that can be controlled (for example, regulated) independently of the central area.
  • the two edge areas can e.g. B. be supplied with fluid by the same fluid delivery unit or by a separate fluid delivery unit each, so that in particular each edge area can be supplied with fluid by a separately controllable (z. B. regulatable) fluid delivery unit.
  • the application device is preferably used to apply a fluid with a viscosity of over 50 mPas, over 80 mPas or over 100 mPas, in particular at a shear rate of 1000s -1 .
  • the fluid can have a Newtonian or a non-Newtonian flow behavior.
  • the application device prefferably has at least two perforated plates arranged next to one another, whose Rows of nozzles are preferably arranged offset to one another in the longitudinal direction of the rows of nozzles.
  • the at least one perforated plate can in particular be arranged on (for example on or in) an outer end face of the application device and thus preferably represent an outer plate.
  • the at least four through holes consequently preferably form exit holes from the application device.
  • the invention also comprises an application method for applying a fluid by means of at least one application device and / or at least one perforated plate as disclosed herein.
  • the fluid is particularly possible here for the fluid to be applied from a single row of nozzles on the perforated plate.
  • the fluid is a coating agent, e.g. B. a paint, a sealant, a release agent, an adhesive, etc., and / or can be used to form a functional layer.
  • a coating agent e.g. B. a paint, a sealant, a release agent, an adhesive, etc.
  • the functional layer category includes, in particular, layers that result in surface functionalization, such as B. adhesion promoters, primers or layers to reduce transmission.
  • the perforated plate according to the invention has hole openings on the upstream side of the perforated plate and hole openings on the downstream side of the perforated plate and z.
  • hole openings are fluidically optimized, in particular nozzle-shaped, and / or that the hole openings have a larger (passage) cross section than the hole openings.
  • Tube stubs which protrude from the downstream side of the perforated plate and into which the through holes merge, in particular to reduce the wetting area at the hole openings, are used as structuring.
  • the pipe stubs can, for. B. have an outer circumferential surface which tapers towards the free end of the respective pipe stub, in particular conically.
  • the perforated plate can, for. B. have a greater thickness at the edge than in a central area with the through holes. It is possible that preferably all through holes in the perforated plate are at least partially produced by an etching production method, in particular dry etching or wet etching.
  • the perforated plate can in particular at least partially consist of a semiconductor material, for. B. made of one of the following materials: silicon, silicon dioxide, silicon carbide, gallium, gallium arsenide and / or indium phosphide.
  • a substantially trapezoidal cross-sectional profile preferably also z. B. may comprise a substantially Gaussian-shaped cross-sectional profile.
  • Figure 1 shows a perforated plate 1 for an application device for the preferably atomization-free and mask-free application of a fluid to a component, e.g. B. a motor vehicle body and / or an attachment therefor.
  • a component e.g. B. a motor vehicle body and / or an attachment therefor.
  • the perforated plate 1 comprises seven through holes 2.1, 3.1, 3.2 and 3.3 for the passage of the fluid, the through holes 2.1, 3.1, 3.2 and 3.3 being assigned to a row of nozzles with a central area 2 and two edge areas 3a and 3b and by hole spacings a1, a2 and a3 are spaced from each other.
  • the row of nozzles comprises in particular a central area 2 with four through holes 2.1, a first in Figure 1 left edge area 3a with two through holes 3.1 and 3.2 and a second in Figure 1 right edge area 3b with a through hole 3.3.
  • the first edge area 3a comprises two most outer hole spacings a1 and a2.
  • the second edge region 3b comprises an outermost hole spacing a3.
  • the two most outer hole spacings a1 and a2 in the edge area 3a are greater than the hole spacings a3 in the central area.
  • the through holes 2.1 in the central area 2 are evenly spaced from one another by means of equally large hole spacings a3.
  • the outermost hole spacing a3 in the edge area 3b is designed to be uniform to the hole spacing a3 in the central area 2.
  • the perforated plate 1 comprises only a single row of nozzles, the row of nozzles being centered and linearly aligned along a straight alignment line (alignment line) 4, so that the central axes preferably of all through holes 2.1, 3.1, 3.2 and 3.3 of the row of nozzles are linearly aligned along one and the same Alignment line 4.
  • the through holes 2.1, 3.1, 3.2 and 3.3 of the row of nozzles are preferably designed to be uniform and thus essentially identical.
  • the double arrow 5 indicates the two possible directions of movement of the perforated plate 1 relative to the component.
  • Figure 2 shows a perforated plate 1 according to another embodiment of the invention.
  • the through holes 3.1 and 3.2 of the first edge region 3a can be spaced apart from one another by means of the hole spacings a1 and a2 and the through holes 3.1 and 3.2 of the second edge region 3b by means of the hole spacings a4 and a5.
  • the hole spacings a1, a2, a4 and a5 are all greater than the uniform hole spacings a3 in the center area 2.
  • the row of nozzles can be designed to be overall symmetrical, in particular axially symmetrical and / or mirror-symmetrical relative to an axis of symmetry S running transversely to the row of nozzles.
  • Figure 3 shows a perforated plate 1 according to yet another embodiment of the invention.
  • the hole spacing is increased in both edge regions 3a and 3b.
  • the two edge regions 3a and 3b do not include as in FIG Figure 2 two hole spacings each, but only one hole spacing a1 and a4.
  • Figure 4 shows a perforated plate 1 according to yet another embodiment of the invention.
  • the outermost hole spacing a3 in the edge area 3b is designed to be uniform to the hole spacing a3 in the central area 2.
  • Figure 5A shows a schematic representation of the cross section through two fluid paths B1 and B2, which can be generated by means of a perforated plate 1 according to an embodiment of the invention.
  • the cross-sections of the coating agent webs B1 and B2 have an essentially isosceles trapezoidal shape 6 and overlap in a joint or overlap area.
  • the distance tolerance between the two fluid paths B1 and B2 can take place in the range of +/- 150 pm, +/- 200 pm, +/- 500 pm, +/- 1 mm or even +/- 2 mm.
  • the trapezoidal shape 6 leads to an in Figure 5A Optimal coating shown on the right, especially in the overlap area.
  • Figure 5B shows a schematic representation of the cross section of a fluid path B1, which can be generated by means of a perforated plate 1 according to an embodiment of the invention.
  • the cross section has an essentially rectangular trapezoidal shape 6.
  • the perforated plate 1 according to the Figures 1 to 4 is expediently used with an application device for applying a fluid.
  • the application device can be designed to ensure an essentially pressure-equal flow of the fluid over the entire row of nozzles.
  • the application device can also be designed to enable a fluid flow to the at least one edge area 3a or 3b that can be controlled (for example, regulated) independently of the central area 2.
  • the two edge regions 3a and 3b can, for. B. be supplied with fluid via the same fluid delivery unit or by a separate fluid delivery unit.
  • FIGs 6 to 11 illustrate through-hole designs according to which the respective through-holes 2.1, 3.1, 3.2 and 3.3 of the row of nozzles can be designed.
  • the perforated plate 1 and in particular the through holes can be designed as shown in FIG WO 2014/121926 A1 disclosed.
  • Figure 6 shows a cross-sectional view through a perforated plate 1 in the region of one of the through-holes, the arrow in the cross-sectional view indicating the direction of flow of the coating agent through the through-hole. It can be seen from the cross-sectional view that the through hole has a flow-optimized hole opening 30, as a result of which the flow resistance of the through hole is reduced.
  • the perforated plate 1 has a structuring on the downstream side at the peripheral edge of the through holes, which reduces the tendency to wetting.
  • Figures 7A and 7B show an alternative cross-sectional view through the perforated plate 1 in the area of a through hole, wherein Figure 7A shows the through hole without a coating agent, whereas in Figure 7B a coating agent (e.g. fluid) 50 is shown.
  • a coating agent e.g. fluid
  • the coating agent 50 wets a wetting surface 60 on the downstream surface of the perforated plate 1, which makes a jet-shaped detachment of the coating agent 50 from the perforated plate 1 more difficult.
  • the Figures 8A and 8B show a preferred embodiment of the invention with a reduced tendency to wetting.
  • the perforated plate 1 has a tubular stub 70 on the circumferential edge of the individual through holes, the through hole merging into the tubular stub 70 so that the end face of the tubular stub 70 forms a wetting surface 80 at the free end of the tubular stub 70.
  • the wetting area 80 is therefore limited to the free end face of the pipe stub 70 and is therefore significantly smaller than the wetting area 60 according to FIG Figure 7A . This facilitates the detachment of the coating agent 50 from the perforated plate 1.
  • the stub tube 70 has between the downstream side of the perforated plate 1 and the free end of the stub tube 70 z.
  • B. a length L which is preferably greater than 50 pm, 70 pm, or 100 microns and / or smaller than 200 microns, 170 microns or 150 microns, so that the pipe stub 70 z.
  • B. a length L. may be between 50 to 200 ⁇ m, 70 to 170 ⁇ m or 100 to 150 ⁇ m.
  • Figure 9 shows a modification of Figure 8A , wherein the outer jacket surface of the pipe stub 70 tapers conically to the free end of the pipe stub 70, so that the wetting surface at the free end of the pipe stub 70 is minimal.
  • Figure 10A shows a schematic cross-sectional view through a perforated plate 1, which partially corresponds to the perforated plates described above, so that to avoid repetition, reference is made to the above description, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that the perforated plate 1 has a relatively thick edge 90 on the outside and a thinner area 100 with the through holes in the middle.
  • the thick edge 90 of the perforated plate 1 ensures sufficient mechanical stability, while the reduction in thickness in the area 100 with the through holes ensures that the through holes offer only a relatively low flow resistance.
  • Figure 10B shows a modification of Figure 10A so as to avoid repetition on the description too Figure 10A is referred to, the same reference numerals being used for corresponding details.
  • a special feature of this exemplary embodiment is that the area 100 is only reduced in thickness on one side.
  • a special feature of the in Figure 11 The embodiment shown of the through hole is that the through hole at the upstream hole confluence initially has a cylindrical region 200 with a first inner diameter.
  • the cylindrical region 200 is then adjoined in the flow direction by a conical region 210 which tapers in the flow direction.
  • the inner diameter d of the opening of the hole is preferably significantly smaller than the inner diameter of the cylindrical region 200.
  • Figure 12A shows in a greatly simplified schematic representation an application device, in particular an application device, with a perforated plate 1 according to the invention for coating a component 160 (for example a motor vehicle body component).
  • a component 160 for example a motor vehicle body component
  • Coating agent jets 170 emerge from the individual through holes of perforated plate 1 and form a coherent coating agent film on the surface of component 160.
  • the individual jets of coating agent 170 can be jets of drops, as in FIG Figure 12A shown, or as continuous coating agent jets, in particular without drop formation, as in Figure 12B shown, trained.
  • Figures 12A and 12B also show that the perforated plate 1 is arranged on an outer end face of the application device, so that the through holes of the perforated plate 1 form exit holes from the application device.
  • Figure 16 shows a cross-sectional view through a through hole of a perforated plate 1.
  • the through hole comprises a funnel-shaped hole opening 30 with an inlet cross-section E and a cylindrical hole opening 40.
  • Figure 17 shows a cross-sectional view through a through hole of a perforated plate 1.
  • the through hole comprises a funnel-shaped hole opening 30 with an inlet cross section E and a cylindrical hole opening 40, the funnel-shaped hole opening 30 from FIG Figure 17 leads deeper into the perforated plate 1 than the funnel-shaped hole opening 30 of the Figure 16 .
  • Figure 18 shows a cross-sectional view through a through hole of a perforated plate 1.
  • the through hole comprises a funnel-shaped hole opening 30 with an inlet cross section E and a cylindrical hole opening 40, the funnel-shaped hole opening 30 from FIG Figure 18 leads deeper into the perforated plate 1 than the funnel-shaped hole opening 30 of the Figure 17 .
  • Figure 19 shows a cross-sectional view through a through hole of a perforated plate 1.
  • the through hole comprises a funnel-shaped hole opening 30 with an inlet cross section E and a cylindrical hole opening 40, the funnel-shaped hole opening 30 from FIG Figure 19 leads deeper into the perforated plate 1 than the funnel-shaped hole opening 30 of the Figure 18 .
  • FIG. 16 to 19 an additional possibility of influencing the fluid flow by changing the cylindrical portion of a through hole can be obtained by designing its opening 30 in the shape of a funnel.
  • a funnel-shaped hole opening 30 By providing a funnel-shaped hole opening 30, so that the cylindrical portion of the through hole is reduced or enlarged, the fluid volume flow through the through hole can also be increased or decreased and that although, for.
  • Tie Figures 16 to 19 the (reference) passage diameter d and the inlet cross-sections E are the same.
  • Figure 16 enables the smallest, Figure 17 the second smallest, Figure 18 the third smallest and Figure 19 the largest fluid volume flow.
  • the ones in the Figures 16 to 19 can expediently be used in the central region 2 of the row of nozzles and / or in at least one edge region 3a, 3b of the row of nozzles.
  • an application device can have at least two perforated plates 1 arranged next to one another, the nozzle rows of which are arranged offset from one another in the longitudinal direction of the nozzle rows.
  • the perforated plates 1 are here on an outer one Arranged face of the application device so that they represent outer panels.

Landscapes

  • Nozzles (AREA)
  • Coating Apparatus (AREA)

Claims (23)

  1. Plaque perforée (1) pour un dispositif d'application pour l'application d'un fluide servant de produit de revêtement sur une carrosserie de véhicule automobile et/ou un accessoire pour celle-ci, avec
    au moins quatre trous de passage (2.1, 3.1, 3.2, 3.3) pour la traversée du fluide, dans lequel les trous de passage (2.1, 3.1, 3.2, 3.3) correspondent à une rangée de buses avec une zone centrale (2) et deux zones de bord (3a, 3b) et sont écartés entre eux par des distances entre trous (a1, a2, a3, a4, a5),
    dans lequel l'au moins une distance entre trous la plus à l'extérieur (a1, a2) de la rangée de buses est supérieure, dans au moins une zone de bord (3a), d'un facteur maximum de 3, à respectivement une distance entre trous (a3) dans la zone centrale (2), caractérisé en ce que
    tous les trous de passage (2.1, 3.1, 3.2, 3.3) de la rangée de buses comprennent chacun une embouchure d'entrée de trou (30) sur le côté, situé en amont, de la plaque perforée (1) et une embouchure de sortie de trou (40) avec un embout tubulaire (70) en tant que structuration tridimensionnelle sur le côté, situé en aval, de la plaque perforée (1).
  2. Plaque perforée (1) selon la revendication 1, caractérisé en ce que la plaque perforée (1) comprend une seule rangée de buses pour l'application du fluide,
    et/ou en ce que la rangée de buses est alignée linéairement de manière centrée et/ou les axes centraux de tous les trous de passage (2.1, 3.1, 3.2, 3.3) de la rangée de buses sont alignés de manière linéaire, de préférence le long d'une seule et même droite d'alignement (4).
  3. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que tous les trous de passage (2.1, 3.1, 3.2, 3.3) de la rangée de buses sont réalisés de manière unitaire.
  4. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que la distance entre trous la plus à l'extérieur (a1) de la rangée de buses constitue, dans au moins une zone de bord (3a), la distance entre trous la plus grande,
    et/ou en ce que les au moins deux distances entre trous les plus à l'extérieur (a1, a2) de la rangée de buses dans au moins une zone de bord (3a) sont supérieures à au moins une distance entre trous (a3) dans la zone centrale (2).
  5. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que les au moins deux distances entre trous les plus à l'extérieur (a1, a2) sont réalisées, dans au moins une zone de bord (3a), de manière unitaire (a1 = a2) ou de manière non unitaire (a1 ≠ a2).
  6. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que
    - la zone centrale (2) comprend au moins deux, au moins trois ou au moins quatre distances entre trous (a3) et/ou
    - l'au moins une zone de bord (3a) comprend au moins deux ou au moins trois distances entre trous (a1, a2).
  7. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que les distances entre trous (a3) de la zone centrale (2) sont réalisés de manière unitaire, de façon à ce que les trous de passage (2.1) de la zone centrale (2) sont écartés uniformément entre eux et/ou tous les trous de passage (2.1) de la zone centrale (2) sont réalisés de manière unitaire.
  8. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que
    - la distance entre trous la plus à l'extérieur (a1) d'une zone de bord (3a) de la rangée de buses est réalisée de manière unitaire ou non unitaire par rapport à la distance entre trous la plus à l'extérieur (a5) de l'autre zone de bord (3b) ou
    - les au moins deux distances entre trous les plus à l'extérieur (a1, a2) d'une zone de bord (3a) de la rangée de buses sont réalisées de manière unitaire ou non unitaire par rapport aux au moins deux distances entre trous les plus à l'extérieur (a4, a5) de l'autre zone de bord (3b).
  9. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que l'au moins une distance entre trous la plus à l'extérieur (a1, a2) d'une zone de bord (3a), cette distance entre trous étant supérieure à au moins une distance entre trous (a3) de la zone centrale (2) et l'au moins une distance entre trous la plus à l'extérieur (a1, a2) de l'autre zone de bord (3b) est réalisé de manière unitaire par rapport à l'au moins une distance entre trous (a3) de la zone centrale (2).
  10. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que les embouchures d'entrée de trous (30) présentent une section transversale de passage supérieure à celle des embouchures de sortie de trous (40) et/ou les embouts tubulaires (70) présentent une surface d'enveloppe externe qui se rétrécit vers l'extrémité libre de l'embout tubulaire (70) correspondant, plus particulièrement de manière conique.
  11. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que les deux zones de bord (3a, 3b) sont réalisées de manière symétrique ou asymétrique ou la rangée de buses est réalisée de manière globalement symétrique, plus particulièrement avec une symétrie axiale et/ou une symétrie en miroir, par rapport à un axe de symétrie (S) s'étendant transversalement par rapport à une rangée de buses.
  12. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce que
    - la distance entre trous la plus à l'extérieur (a1) de l'au moins une zone de bord (3a) est supérieure d'un facteur maximum de 2 ou 3 à une distance entre trous (a3) de la zone centrale (2) ou
    - les au moins deux distances entre trous les plus à l'extérieur (a1, a2) de la rangée de buses d'au moins une zone de bord (3a) sont supérieures d'un facteur maximum de 2 ou 3 à une distance entre trous (a3) de la zone centrale (2).
  13. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce qu'au moins un trou de passage (2.1) de la zone centrale (2) de la rangée de buses et/ou au moins un trou de passage (3.1) d'au moins une zone de bord (3a) de la rangée de buses comprend une embouchure d'entrée de trou (30) en forme d'entonnoir et de préférence une embouchure de sortie de trou (40) cylindrique.
  14. Plaque perforée (1) selon la revendication 13, caractérisé en ce que l'embouchure d'entrée de trou (30) en forme d'entonnoir de l'au moins un trou de passage (2.1) de la zone centrale (2) conduit plus profondément dans la plaque perforée (1) que l'embouchure d'entrée (30) en forme d'entonnoir de l'au moins un trou de passage (3.1) de l'au moins une zone de bord (3a).
  15. Plaque perforée (1) selon l'une des revendications précédentes, caractérisé en ce qu'une section transversale d'entrée (E) d'une embouchure d'entrée de trou (30) d'au moins un trou de passage (2.1) de la zone centrale (2) de la rangée de buses est supérieure à une section transversale d'entrée (E) d'une embouchure d'entrée de trou (30) d'au moins un trou de passage (3.1) de l'au moins une zone de bord (3a) de la rangée de buses.
  16. Dispositif d'application pour l'application d'un fluide servant de produit de revêtement, avec au moins une plaque perforée (1) selon l'une des revendications précédentes.
  17. Dispositif d'application selon la revendication 16, caractérisé en ce que le dispositif d'application est conçu pour une alimentation en fluide d'au moins une zone centrale (3a) contrôlable indépendamment de la zone centrale (2).
  18. Dispositif d'application selon la revendication 16 ou 17, caractérisé en ce que les deux zones de bord (3a, 3b) sont reliées avec la même unité de convoyage de fluide ou sont reliées chacune avec leur propre unité de convoyage de fluide.
  19. Dispositif d'application selon l'une des revendications 16 à 18, caractérisé en ce que le dispositif d'application comprend au moins deux plaques perforées (1) juxtaposées, dont les rangées de buses sont disposées de manière décalée entre elles dans la direction longitudinale des rangées de buses.
  20. Dispositif d'application selon l'une des revendications 16 à 19, caractérisé en ce que l'au moins une plaque perforée (1) est disposée sur une face frontale externe du dispositif d'application, de préférence de façon à ce que les au moins quatre trous de passage (2.1, 3.1, 3.2, 3.3) constituent des trous de sortie hors du dispositif d'application.
  21. Procédé d'application pour l'application d'un fluide servant de produit de revêtement, qui est appliqué au moyen d'au moins une plaque perforée (1) selon l'une des revendications 1 à 15 ou d'un dispositif d'application selon l'une des revendications 16 à 20 sur un composant, dans lequel une application du produit de revêtement est réalisée avec une section transversale globalement trapézoïdale.
  22. Procédé d'application selon la revendication 21, caractérisé en ce que, avec le dispositif d'application, une alimentation en fluide isobare est effectuée sur toute la rangée de buses.
  23. Procédé d'application selon la revendication 21 ou 22, caractérisé en ce que le dispositif d'application applique un fluide avec une viscosité supérieure à 50 mPas, supérieure à 80 mPas ou supérieure à 100 mPas.
EP17700769.7A 2016-01-14 2017-01-13 Plaque perforée présentant une distance plus importante entre les trous dans une ou les deux zones de bord d'une série de buses Active EP3402599B1 (fr)

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DE102016000390.1A DE102016000390A1 (de) 2016-01-14 2016-01-14 Lochplatte mit vergrößertem Lochabstand in einem oder beiden Randbereichen einer Düsenreihe
PCT/EP2017/000038 WO2017121644A1 (fr) 2016-01-14 2017-01-13 Plaque perforée présentant une distance plus importante entre les trous dans une ou les deux zones de bord d'une série de buses

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EP3402599A1 EP3402599A1 (fr) 2018-11-21
EP3402599B1 true EP3402599B1 (fr) 2021-10-20

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EP (1) EP3402599B1 (fr)
JP (1) JP6927984B2 (fr)
KR (1) KR102637863B1 (fr)
CN (1) CN108698054A (fr)
DE (1) DE102016000390A1 (fr)
ES (1) ES2902471T3 (fr)
MX (1) MX2018008622A (fr)
WO (1) WO2017121644A1 (fr)

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ES2902471T3 (es) 2022-03-28
US11097291B2 (en) 2021-08-24
WO2017121644A1 (fr) 2017-07-20
KR102637863B1 (ko) 2024-02-19
JP6927984B2 (ja) 2021-09-01
MX2018008622A (es) 2019-05-15
EP3402599A1 (fr) 2018-11-21
DE102016000390A1 (de) 2017-07-20
KR20180102601A (ko) 2018-09-17
JP2019501771A (ja) 2019-01-24
US20190022672A1 (en) 2019-01-24

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