Skirt for a rotary projector of coating product comprising at least three distinct series of air ejecting nozzles

Patent metadata

Field	Value
Publication number	US-10919065-B2
Application number	US-201715643882-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Jul 11, 2016
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

This skirt (20) is intended to equip a coating product rotary projector. The skirt (20) has a plurality of air ejection nozzles (40, 42, 44, 46) arranged in said skirt (20) to eject jets of air forming shaping air suitable for shaping the jets of coating product, said air ejection nozzles (40, 42, 44, 46) comprising at least three separate series of nozzles (41, 43, 45, 47) each made up of a plurality of air ejection nozzles (40, 42, 44, 46) fluidly connected to a shared supply chamber, specific to said series of nozzles (41, 43, 45, 47).

First claim

The invention claimed is:

1. A shaping ring for a rotary projector, the rotary projector configured to project a jet of coating product on a surface, the shaping ring comprising:
a first series of nozzles comprising a plurality of air ejection nozzles each fluidly connected to a first shared supply chamber,
a second series of nozzles comprising a plurality of air ejection nozzles each fluidly connected to a second shared supply chamber, and
a third series of nozzles comprising a plurality of air ejection nozzles each fluidly connected to a third shared supply chamber;
a fourth series of nozzles comprising a plurality of air ejection nozzles each fluidly connected to a fourth shared supply chamber;
wherein each shared supply chamber is separate from the other shared supply chambers;
wherein each of the air ejection nozzles is configured to eject a jet of air such that the jets of air ejected by the plurality of air ejection nozzles combine to form a shaping air flow adapted to shape the jet of coating product;
wherein a first group of nozzles comprises at least the first series of nozzles and the third series of nozzles, and a second group of nozzles comprises at least the second series of nozzles and the fourth series of nozzles,
wherein the first group of nozzles is configured such that, when the nozzles of the first group of nozzles is supplied with air, the nozzles of the first group of nozzles eject jets of air that together form a first shaping air flow adapted to shape the jet of coating product such that the jet of coating product has a first width,
wherein the second group of nozzles is configured such that, when the nozzles of the second group of nozzles is supplied with air, the nozzles of the second group of nozzles eject jets of air that together form a second shaping air flow adapted to shape the jet of coating product such that the jet of coating product has a second width that is greater than the first width; and
wherein each air ejection nozzle of the first series of nozzles is configured for ejecting an air jet along a first direction, and each air ejection nozzle of the second series of nozzles is configured for ejecting an air jet along a second direction different from the first direction.

2. The shaping ring according to claim 1 , wherein none of the nozzles of the first group of nozzles are included in the second group of nozzles and none of the nozzles of the second group of nozzles are included in the first group of nozzles.

3. The shaping ring according to claim 1 , wherein the first direction is defined by a first unitary vector having a first radial component, and the second direction is defined by a second unitary vector having a second radial component, the second radial component being greater than the first radial component.

4. The shaping ring according to claim 1 , wherein the first direction is defined by a first unitary vector having a first orthoradial component, and the second direction is defined by a second unitary vector having a second orthoradial component, the second orthoradial component being greater than the first orthoradial component.

5. The shaping ring according to claim 1 , wherein each of the first and second directions is defined by a unitary vector having a non-zero orthoradial component.

6. The shaping ring according to claim 1 , wherein the nozzles of the first series of nozzles and the nozzles of the third series of nozzles are positioned alternating relative to one another.

7. The shaping ring according to claim 1 , wherein the first group of nozzles are positioned within a separating perimeter, the second group of nozzles being positioned outside the separating perimeter.

8. A rotary projector for a coating product including:
at least one spraying member for spraying the coating product, wherein the spraying member comprises a bowl with a distribution surface extending from an upstream end to a downstream end, the spraying member further comprising a spraying edge at the downstream end,
the at least one spraying member configured to rotate around a rotation axis, wherein the spraying edge of the at least one spraying member is configured to form a jet of coating product when coating product is supplied to the upstream end and the spraying member rotates around the rotation axis, and
a stationary shaping ring,
wherein the stationary shaping ring is made up of the shaping ring according to claim 1 , each of the supply chambers being formed in the rotary projector.

9. The rotary projector according to claim 8 , wherein the sprayer has at least one edge defining a circle, each of the air ejection nozzles being at a distance from the rotation axis greater than or equal to the half-diameter of the circle.

10. A spraying robot containing an articulated arm, a wrist mounted at one end of the articulated arm, and a rotary projector attached on the wrist, wherein the rotary projector is a rotary projector according to claim 8 .

Assignees

• Exel Ind

Inventors

• Medard Cyrille
• Perinet Sylvain
• Provenaz Philippe

Classifications

• B05B13/0431 Primary

  with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces · CPC title

• B05B9/03

  characterised by means for supplying liquid or other fluent material {(B05B9/002 takes precedence)} · CPC title

• B05B3/02

  with rotating elements (electric spraying discharge apparatus characterised by having rotary outlet or deflecting elements B05B5/04) · CPC title

• B05B1/26 Primary

  with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets · CPC title

• B05B1/14

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