Lacquer transfer device

Patent metadata

Field	Value
Publication number	US-11413650-B2
Application number	US-202016843112-A
Country	US
Kind code	B2
Filing date	Apr 8, 2020
Priority date	Apr 11, 2019
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A device for a lacquer transfer includes a frame, transfer roller with a circumferential lateral wall, drive unit for rotating the transfer roller, and slit nozzle with a muzzle end for dispensing lacquer. The slit nozzle includes a first nozzle-part, second nozzle-part and deformation unit. The deformation unit is attached to the first nozzle-part, the lateral wall passing in a rotation direction subsequently the deformation unit and the muzzle end during transfer unit rotation. The lateral wall of the transfer roller is deformed by the deformation unit in the radial direction resulting in a deformation section of the lateral wall in the rotation direction behind the deformation unit, the muzzle end of the slit nozzle arranged for dispensing lacquer into depressions of the lateral wall. The transfer roller can roll with the outside contact surface on a work surface of a work piece for transferring lacquer from the depressions to the work surface of the work piece.

First claim

The invention claimed is:

1. A device for a lacquer transfer, comprising:
a frame;
a transfer roller, which is mounted rotatably about an axis of rotation at the frame and has a circumferential lateral wall that is elastically deformable in a radial direction of the transfer roller, an outside contact surface of the lateral wall comprising several depressions;
a drive unit configured to drive the transfer roller in a rotation direction of the transfer roller; and
a slit nozzle, which is at least indirectly connected to the frame and comprises:
a first nozzle-part;
a second nozzle-part;
a muzzle end for dispensing lacquer; and
a deformation unit, which is attached to the first nozzle-part, such that the lateral wall passes, in the rotation direction, the deformation unit and the muzzle end during a rotation of the transfer roller in the rotation direction and is configured to elastically deform the lateral wall in the radial direction of the transfer roller;

wherein the slit nozzle is arranged, such that the lateral wall of the transfer roller is deformed by the deformation unit in the radial direction resulting in a deformation section of the lateral wall in the rotation direction behind the deformation unit,
wherein the muzzle end of the slit nozzle is arranged contactless to or in direct contact with the outside contact surface at the deformation section of the lateral wall for dispensing lacquer into respective depressions, and
wherein the transfer roller is configured to roll with the outside contact surface on a work surface of a work piece for transferring the lacquer from the depressions to the work surface of the work piece.

2. The device of claim 1 , wherein the slit nozzle comprises a fluid channel that extends to the muzzle end and is formed by and/or extends between the first nozzle-part and the second nozzle-part of the slit nozzle.

3. The device of claim 1 , wherein a minimum distance between a deformation surface of the deformation unit facing the lateral wall and the muzzle end is less than 20 mm.

4. The device of claim 3 , wherein the deformation surface is arranged within an angular range of less than 40 degree about the axis of rotation.

5. The device of claim 1 , wherein the slit nozzle is arranged such that the lateral wall is deformed by the deformation unit by less than 15 mm in the radial direction.

6. The device of claim 1 , wherein the deformation unit protrudes at least 1 mm, beyond the slit nozzle towards the outside contact surface of the lateral wall.

7. The device of claim 1 , wherein, when the muzzle end of the slit nozzle is arranged contactless to the outside contact surface of the lateral wall, the slit nozzle is arranged such that a first minimum distance between the muzzle end facing the outside contact surface and the outside contact surface is less than 15 mm.

8. The device of claim 1 wherein:
the first nozzle-part is in direct contact with the outside contact surface of the lateral wall; and
the second nozzle-part is spaced apart from the outside contact surface.

9. The device of claim 1 , wherein the first nozzle-part protrudes beyond the second nozzle-part in a direction towards the outside contact surface of the lateral wall.

10. The device of claim 8 , wherein the second nozzle-part is spaced apart from the outside contact surface by a second minimum distance between 0.01 mm and 5 mm, or between 1 mm and 3 mm.

11. The device of claim 9 , wherein the second nozzle-part is spaced apart from the outside contact surface by a second minimum distance between 0.01 mm and 5 mm.

12. The device of claim 1 , wherein the transfer roller is an inflated transfer roller.

13. The device of claim 1 , wherein the deformation unit is configured to deform the lateral wall by between 0.5 mm and 30 mm in the radial direction of the transfer roller.

14. The device of claim 1 , wherein the deformation unit comprises a pressure roller, which is configured to press, in a rolling manner, on the lateral wall to deform the lateral wall in the radial direction.

15. The device of claim 1 , wherein the deformation unit comprises a gas pressure unit configured to generate positive gas pressure acting contactless on the lateral wall, which causes the lateral wall to deform in the radial direction.

16. The device of claim 1 , wherein:
the lateral wall comprises embedded ferromagnetic metal particles; and
the deformation unit comprises a controllable electro-magnet configured to exert a magnetic force on the metal particles, which causes the lateral wall to deform in the radial direction.

17. The device of claim 1 , wherein the deformation unit protrudes at least 3 mm beyond the slit nozzle towards the outside contact surface of the lateral wall.

18. The device of claim 1 , wherein, when the muzzle end of the slit nozzle is arranged contactless to the outside contact surface of the lateral wall, the slit nozzle is arranged such that a first minimum distance between the muzzle end facing the outside contact surface and the outside contact surface is between 0.01 mm and 10 mm.

19. The device of claim 9 , wherein the second nozzle-part is spaced apart from the outside contact surface by a second minimum distance between 1 mm and 3 mm.

Assignees

• Airbus Operations Gmbh
• Airbus Sas

Inventors

• Zahlen Pierre C
• Gillessen Alexander
• Kerger Sebastian
• Schepp Christian
• Kress Daniel
• Kümmel Waldemar

Classifications

• B05C1/027 Primary

  only at particular parts of the articles (at particular parts of work of indefinite length B05C1/16) · CPC title

• B05D1/28 Primary

  performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers · CPC title

• B05C5/0254

  Coating heads with slot-shaped outlet (B05C5/0283 takes precedence) · CPC title

• B05C1/08

  using a roller {or other rotating member which contacts the work along a generating line} · CPC title

• B05C1/0813

  characterised by means for supplying liquid or other fluent material to the roller · CPC title