Perforated plate with a reduced diameter in one or both edge regions of a row of nozzles

Patent metadata

Field	Value
Publication number	US-11529645-B2
Application number	US-201716069926-A
Country	US
Kind code	B2
Filing date	Jan 13, 2017
Priority date	Jan 14, 2016
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

The disclosure relates to a perforated plate for an application apparatus for the application of a fluid onto a component, preferably a motor vehicle bodywork and/or an add-on part therefor. The perforated plate comprises at least three through-holes for the passage of the fluid, wherein the through-holes are assigned to a row of nozzles with a central region and two edge regions, wherein the at least one outermost through-hole in at least one edge region has at least one reference opening diameter that is smaller than at least one reference opening diameter of at least one through-hole in the central region. The disclosure also relates to an application apparatus and an application method with such a perforated plate.

First claim

The invention claimed is:

1. An application device for application of a fluid without atomization of the fluid, the fluid being one of a paint, a sealant, a separating agent, or an adhesive, the application device, comprising:
a perforated plate for application of the fluid onto a component without atomization of the fluid,
the perforated plate having at least three through-holes for passage of the fluid, wherein the at least three through-holes are assigned to a row of nozzles with a central region and two edge regions, each of the at least three through-holes defining an axis, the axes linearly aligned and parallel to each other,
wherein at least one outermost through-hole of the at least three through-holes is in at least one of the two edge regions and has at least one reference opening diameter that is smaller than at least one reference opening diameter of at least one through-hole in the central region of the at least three through-holes assigned to the row of nozzles,
wherein at least two outermost through-holes in one edge region have different reference opening diameters than each other, and the reference opening diameters of the at least two outermost through-holes in the one edge region are smaller than reference opening diameters of the through-holes of the central region,
wherein each through-hole of the at least three through-holes has a hopper shaped hole inlet opening, the hopper shaped hole inlet openings of the at least three through-holes all being a different depth relative to each other, and
wherein an edge of the perforated plate is thicker along the axis than at the through-holes along the axis.

2. The application device according to claim 1 , wherein the perforated plate has only one single row of nozzles for the application of the fluid.

3. The application device according to claim 1 , wherein the row of nozzles comprising the central region and at least one edge region is aligned linearly.

4. The application device according to claim 1 , wherein
a straight alignment line extends linearly through at least one central axis of the at least one outermost through-hole in at least one edge region and through at least one central axis of at least one through-hole in the central region, so that a central nozzle row alignment comes about between the at least one edge region and the central region.

5. The application device according to claim 1 , wherein the reference opening diameter of an outermost through-hole of the at least two outermost through-holes is smaller than the reference opening diameter of the other of the at least two outermost through-holes.

6. The application device according to claim 1 , wherein the central region has one of: at least two and at least three through-holes.

7. The application device according to claim 1 , wherein
a plurality of through-holes in the central region have a uniform reference opening diameter, and
the central axes of a plurality of through-holes in the central region are aligned linearly to one another.

8. The application device according to claim 1 , wherein a plurality of through-holes in the central region are spaced equally from one another.

9. The application device according to claim 1 , wherein one of: an outermost hole spacing and at least two outermost hole spacings in at least one edge region correspond to the at least one hole spacing in the central region.

10. The application device according to claim 1 , wherein at least one outermost hole spacing in one edge region of the row of nozzles is configured uniform relative to at least one outermost hole spacing in the other edge region.

11. The application device according to claim 1 , wherein at least one hole spacing and the reference opening diameters in the two edge regions correspond to one another.

12. The application device according to claim 1 , wherein the row of nozzles is formed at least one of axially symmetrically and mirror symmetrically, relative to a symmetry axis running transversely to the row of nozzles.

13. The application device according to claim 1 , wherein the through-holes of the row of nozzles each have a hole inlet opening on the upstream side of the perforated plate and a hole outlet opening on the downstream side of the perforated plate and a pipe stub as a three-dimensional structuring on the downstream side of the perforated plate, wherein the hole inlet openings have a larger passage cross-section than the hole outlet openings.

14. The application device according to claim 13 , wherein the pipe stubs have an outer casing surface which tapers toward the free end of the respective pipe stub.

15. The application device according to claim 1 , wherein the at least one outermost through-hole in one edge region has at least one reference opening diameter that is smaller than at least one reference opening diameter of at least one through-hole in the central region, and the at least one outermost through-hole in the other edge region has at least one reference opening diameter which is uniformly configured to at least one reference opening diameter of at least one through-hole in the central region.

16. The application device according to claim 1 , wherein the perforated plate includes a flange at the edge.

17. The application device according to claim 16 , wherein the perforated plate includes a second flange opposite the flange, and wherein the flange extends upward and the second flange extends downward.

18. The application device according to claim 1 , wherein at least two outermost through-holes of the at least three through-holes in the other edge region have different reference opening diameters than each other, and the reference opening diameters of the at least two outermost through-holes of the other edge region are smaller than reference opening diameters of the through-holes of the central region.

19. The application device according to claim 18 , wherein an outermost through-hole of the at least two outermost through-holes at each of the edge regions is smaller than the reference opening diameter of the other of the at least two outermost through-holes.

20. The application device according to claim 19 , wherein the reference opening diameters of the through-holes of the central region are all uniform in size.

21. The application device according to claim 20 , wherein the at least two through-holes of one of the edge regions is formed symmetrically to the at least two through-holes of the other of the edge regions.

Assignees

• Duerr Systems Ag

Inventors

• Fritz Hans-Georg
• Wöhr Benjamin
• Kleiner Marcus
• Bubek Moritz
• Beyl Timo

Classifications

• B05B1/14 Primary

  with multiple outlet openings (B05B1/02, B05B1/26 take precedence); with strainers in or outside the outlet opening · CPC title

• B05B17/0638 Primary

  spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices · CPC title

• B05C5/027

  Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated (B05C5/0254 takes precedence) · CPC title

• B05C5/0291

  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 · CPC title