Dynamic synchronized masking and coating

Patent metadata

Field	Value
Publication number	US-9555441-B2
Application number	US-201414266854-A
Country	US
Kind code	B2
Filing date	May 1, 2014
Priority date	May 3, 2013
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

A computer implemented system and method of coating a workpiece includes moving a coating applicator mounted to a coating dispensing robot relative to a workpiece and moving a mask mounted to a masking robot relative to the workpiece, wherein the mask is positioned between the coating applicator and the workpiece. A portion of the coating dispensed by the applicator is deposited on the workpiece, and another portion is intercepted by and deposited onto the mask. A desired pattern of coating can be deposited by moving the mask or dispenser or both in a coordinated manner.

First claim

The invention claimed is:

1. A computer-implemented method of coating a workpiece, comprising:
moving a coating applicator mounted to a coating dispensing robot relative to the workpiece with the coating dispensing robot;
selecting, from a plurality of removable masks, a first mask for coupling to a masking robot;
coupling the selected first mask to the masking robot;
moving, with the masking robot, the selected first mask mounted to the masking robot relative to a workpiece;
positioning the selected first mask between the coating applicator and the workpiece;
depositing at least a portion of coating dispensed by the coating applicator onto the workpiece and at least a portion of the coating dispensed by the coating applicator onto the selected first mask while the selected first mask is positioned between the coating applicator and workpiece;
releasing the selected first mask from being coupled to the masking robot; and
coupling a second mask of the plurality of removable masks to the masking robot, the second mask being a different mask than the first mask.

2. The method of claim 1 wherein the portion of coating dispensed by the coating applicator on the workpiece is passed through a hole in the selected first mask.

3. The method of claim 1 wherein the depositing step includes moving the applicator relative to the workpiece while the selected first mask is held stationary relative to the workpiece.

4. The method of claim 1 wherein the depositing step includes holding the applicator stationary relative to the workpiece while moving the selected first mask relative to the workpiece.

5. The method of claim 1 wherein the depositing step includes moving the applicator relative to the workpiece while moving the selected first mask relative to the workpiece.

6. The method of claim 1 , further comprising:
selecting the second mask and removably mounting the selected second mask to the masking robot.

7. The method of claim 6 ,
wherein the step of releasing the selected first mask from being coupled to the masking robot includes releasing the selected first mask into a magazine, the magazine containing a plurality of the plurality of removable masks that are decoupled from the masking robot; and
wherein the step of coupling the second mask of the plurality of removable masks includes removing the second mask from the magazine.

8. The method of claim 1 , further comprising:
cleaning a coating from the selected first mask prior to releasing the selected first mask into the magazine.

9. A computer-implemented method of coating a workpiece, comprising:
selecting one of a plurality of masks for mounting to a masking robot;
mounting the selected one of the plurality of masks to the masking robot;
positioning a coating applicator mounted to a coating dispensing robot relative to a workpiece to permit the applicator to dispense coating on the workpiece;
positioning the selected one of the plurality of masks mounted to the masking robot between the coating applicator and the workpiece;
depositing at least a portion of coating dispensed by the coating applicator onto the workpiece by directing the portion of coating past the selected one of the plurality of masks;
un-mounting the selected one of the plurality of masks from the masking robot; and
mounting a different one of the plurality of masks to the masking robot.

10. The method of claim 9 wherein the depositing step includes moving the applicator relative to the workpiece while the selected one of the plurality of masks is held stationary relative to the workpiece.

11. The method of claim 9 wherein the depositing step includes holding the applicator stationary relative to the workpiece while moving the selected one of the plurality of masks relative to the workpiece.

12. The method of claim 9 wherein the depositing step includes moving the applicator relative to the workpiece while moving the selected one of the plurality of masks relative to the workpiece.

13. The method of claim 9 , wherein the step of mounting the selected one of the plurality of masks to the masking robot includes removing the selected one of the plurality of masks from a magazine, the magazine containing a plurality of the plurality of masks that are not mounted to the masking robot.

14. The method of claim 13 , wherein the step of mounting the selected one of the plurality of masks to the masking robot includes the masking robot being selectively, and removably, coupled to a bracket of the selected one of the plurality of masks.

15. The method of claim 13 , wherein the step of un-mounting the selected one of the plurality of masks from the masking robot includes placing the selected one of the plurality of masks into the magazine.

16. The method of claim 15 wherein the step of mounting a different one of the plurality of masks to the masking robot includes removing the different one of the plurality of masks from the magazine.

17. The method of claim 9 , further including the step of cleaning the selected one of the plurality of masks prior to un-mounting the selected one of the plurality of masks from the masking robot.

18. The method of claim 17 , wherein the step of cleaning the selected one of the plurality of masks includes agitating the selected one of the plurality of masks in a solution in a cleaning station of a magazine, the magazine containing a plurality of the plurality of masks that are not mounted to the masking robot.

19. The method of claim 9 , further including the steps of:
positioning the selected different one of the plurality of masks mounted to the masking robot between the coating applicator and a workpiece;
depositing at least a portion of coating dispensed by the coating applicator onto the workpiece by directing the portion of coating past the selected different one of the plurality of masks; and
un-mounting the selected different one of the plurality of masks from the masking robot.

20. The method of claim 19 , further including the step of cleaning the selected different one of the plurality of masks in a solution in a cleaning station of a magazine, the magazine containing a plurality of the plurality of masks that are not mounted to the masking robot.

Assignees

• Abb Technology Ag
• Abb Schweiz Ag

Inventors

• Rouaud Didier

Classifications

• B05B12/22 Primary

  movable relative to the spray area · CPC title

• B05B12/122

  responsive to presence or shape of target (B05B12/124 takes precedence) · CPC title

• B05B12/20

  Masking elements, i.e. elements defining uncoated areas on an object to be coated · CPC title

• B25J11/0075

  Manipulators for painting or coating · CPC title

• B05D1/32 Primary

  using means for protecting parts of a surface not to be coated, e.g. using stencils, resists · CPC title