Device for lacquer transfer

Patent metadata

Field	Value
Publication number	US-11224892-B2
Application number	US-202016868878-A
Country	US
Kind code	B2
Filing date	May 7, 2020
Priority date	May 8, 2019
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A device for a lacquer transfer is disclosed having a transfer roller, the transfer roller includes a cylindrical support body, a first ring element, a second ring element, and a tire, wherein the tire comprises a middle section forming a circumferential outer contact surface with several depressions. The transfer roller is configured to roll with the outer contact surface on a work surface of a workpiece for transferring lacquer from the outer contact surface and from the depressions to the work surface of the workpiece. The tire includes two annular end sections, which are attached to the support body resulting in two axially separated and circumferentially extending connections. The tire, the connections, and the outer shell of the support body are fluid-tight and arranged such that a fluid-tight main cavity is formed between the tire and the support body. The first and second ring elements are arranged in the main cavity and seated on the support body at a predefined distance in an axial direction (A) of the transfer roller from one another.

First claim

The invention claimed is:

1. A device for a lacquer transfer, comprising:
a frame,
a drive unit,
a nozzle with a dispensing end for dispensing lacquer,
and a transfer roller,
wherein the transfer roller is rotatably mounted on the frame, such that the transfer roller is rotatable relative to the frame about an axis of rotation,
wherein the drive unit is configured to drive rotation of the transfer roller about the axis of rotation,
wherein the transfer roller comprises:
a cylindrical support body,
a first ring element,
a second ring element, and
a tire,
wherein the tire comprises a middle section forming a circumferential outer contact surface with several depressions,
wherein the nozzle and the transfer roller are arranged such that lacquer is dispensable from the dispensing end onto the outer contact surface and into the depressions,
wherein the transfer roller is configured to roll with the outer contact surface on a work surface of a workpiece for transferring the lacquer from the outer contact surface and from the depressions to the work surface of the workpiece,
wherein the tire comprises two annular end sections, which are arranged on opposite sides of the middle section and are attached to a cylindrical outer shell of the support body resulting in two axially separated and circumferentially extending connections,
wherein the tire, the connections, and the outer shell of the support body are fluid-tight and arranged such that a fluid-tight main cavity is formed between the tire and the support body,
wherein the first and second ring elements are arranged in the main cavity and seated on the support body at a predefined distance in an axial direction (A) of the transfer roller from one another such that the middle section of the tire between the first and second ring elements is prestrained in the axial direction (A),
wherein the first ring element comprises a first fluid-tight wall defining a circumferentially extending first ring cavity, which is filled with a first fluid,
wherein the second ring element comprises a second fluid-tight wall defining a circumferentially extending second ring cavity ( 80 ), which is filled with a second fluid, and
wherein the device comprises a control unit adapted to control a first pressure in the first ring cavity and a second pressure in the second ring cavity.

2. The device according to claim 1 , wherein the control unit is adapted to control a main pressure in the main cavity.

3. The device according to claim 1 , wherein the device comprises a fluid conveyor means, which is attached to a resealable first opening in the first ring element and a resealable second opening in the second ring element, such that the first fluid is transferrable into and out of the first ring cavity and the second fluid is transferrable into and out of the second ring cavity.

4. The device according to claim 1 , wherein the main cavity is filled with a gas with a predefined pressure such that the middle section is prestrained in a radial direction (R) of the transfer roller.

5. The device according to claim 1 , wherein a thickness of the middle section of the tire between the outer contact surface of the tire and a confinement surface of the tire facing the main cavity is at most 1 cm.

6. The device according to claim 1 , wherein the tire is formed of at least two layers.

7. The device according to claim 6 , wherein the number of layers is at most five.

8. The device according to claim 6 , wherein the tire comprises a first layer of the at least two layers and a second layer of the at least two layers, wherein the first layer is arranged on a side of the tire facing the main cavity, wherein the second layer forms the outer contact surface of the tire.

9. The device according to claim 1 , wherein each end section extends transversely to an extension of the middle section.

10. The device according to claim 1 , wherein the tire comprises silicone.

11. The device according to claim 1 , wherein the transfer roller comprises a first clamping element and a second clamping element, wherein the first clamping element is in contact with a first annular end section of the two annular end sections such that the first annular end section is pressed on the outer shell of the support body to form a first connection of the two connections, wherein the second clamping element is in contact with a second annular end section of the two annular end sections such that the second annular end section is pressed on the outer shell of the support body to form a second connection of the two connections.

12. The device according to claim 1 , wherein the support body comprises a transparent cylinder and two rims, wherein the rims are mounted to the cylinder at two opposing ends of the cylinder such that the cylinder and the two rims are arranged coaxial to each other.

13. The device according to claim 12 , wherein the cylinder is made of glass.

14. The device according to claim 12 , wherein the cylinder forms a confinement surface facing the main cavity.

15. The device according to claim 1 , wherein the support body comprises a first support element extending in the radial direction (R) such that the first ring element is secured against movement in the axial direction (A) by the first support element, wherein the support body comprises a second support element extending in the radial direction (R) such that the second ring element is secured against movement in the axial direction by the second support element.

16. A device for a lacquer transfer, comprising:
a frame,
a drive unit,
a nozzle with a dispensing end for dispensing lacquer,
and a transfer roller,
wherein the transfer roller is rotatably mounted on the frame, such that the transfer roller is rotatable relative to the frame about an axis of rotation,
wherein the drive unit is configured to drive rotation of the transfer roller about the axis of rotation,
wherein the transfer roller comprises:
a cylindrical support body,
a first ring element,
a second ring element, and
a tire,
wherein the tire comprises a middle section forming a circumferential outer contact surface with several depressions,
wherein the nozzle and the transfer roller are arranged such that lacquer is dispensable from the dispensing end onto the outer contact surface and into the depressions,
wherein the transfer roller is configured to roll with the outer contact surface on a work surface of a workpiece for transferring the lacquer from the outer contact surface and from the depressions to the work surface of the workpiece,
wherein the tire comprises two annular end sections, which are arranged on opposite sides of the middle section and are attached to a cylindrical outer shell of the support body resulting in two axially separated and circumferentially extending connections,
wherein the tire, the connections, and the outer shell of the support body are fluid-tight and arranged such that a fluid-tight main cavity is formed between the tire and the support body,
wherein the first and second ring elements are arranged in the main cavity and seated on the support body at a predefined distance in an axial direction (A) of the transfer roller from one another such that the middle section of the tire between the first and second ring elements is prestrained in the axial direction (A),
wherein the first ring element comprises a first fluid-tight wall defining a circumferentially extending first ring cavity, which is filled with a first fluid,
wherein the second ring element comprises a second fluid-tight wall defining a circumferential

Assignees

• Airbus Operations Gmbh

Inventors

• Kerger Sebastian
• Gillessen Alexander
• Zahlen Pierre

Classifications

• B05C1/0813

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

• B05C1/027

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

• B05C1/0808 Primary

  Details thereof, e.g. surface characteristics · CPC title

• B05C1/0873

  Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work · CPC title

• B05C9/14

  the auxiliary operation involving heating {or cooling} · CPC title