Mobile robot-based high transfer efficiency vehicle painting system

Patent metadata

Field	Value
Publication number	US-2024391103-A1
Application number	US-202318322260-A
Country	US
Kind code	A1
Filing date	May 23, 2023
Priority date	May 23, 2023
Publication date	Nov 28, 2024
Grant date	—

Abstract

A painting system includes a mobile robot including a frame, wheels connected to the frame, and a motor configured to move the wheels to position the mobile robot. A paint container is mounted on the mobile robot and configured to store paint. A robot arm includes a first end mounted on the mobile robot and a paint applicator arranged at a second end of the robot arm. The paint applicator is in fluid communication with the paint container and includes one or more nozzles to spray the paint onto a surface.

First claim

What is claimed is:

1 . A painting system comprising:
a mobile robot including a frame, wheels connected to the frame, and a motor configured to move the wheels to position the mobile robot; a paint container mounted on the mobile robot and configured to store paint; and a robot arm including a first end mounted on the mobile robot and a paint applicator arranged at a second end of the robot arm, wherein the paint applicator is in fluid communication with the paint container and includes one or more nozzles to spray the paint onto a surface.

2 . The painting system of claim 1 , wherein the paint applicator comprises one of an overspray-free paint applicator and a high transfer efficiency paint applicator.

3 . The painting system of claim 1 , wherein the surface corresponds to a surface of a vehicle.

4 . The painting system of claim 1 , wherein the mobile robot includes a controller configured to control movement of at least one of the mobile robot, the robot arm, and the paint applicator.

5 . The painting system of claim 4 , further comprising:
a vision guidance system configured to communicate with the controller, to take at least one of images and video of the surface, and to determine a position of at least one of the mobile robot, the robot arm, and the paint applicator based on the at least one of images and video of the surface, wherein the controller positions the at least one of the mobile robot, the robot arm, and the paint applicator in response to the vision guidance system.

6 . The painting system of claim 4 , wherein the surface corresponds to a surface of a vehicle and further comprising an end effector configured to manipulate a component of the vehicle.

7 . The painting system of claim 6 , wherein the controller is configured to control a position of the end effector.

8 . The painting system of claim 6 , wherein the end effector includes an arm configured to move a swing panel of the vehicle.

9 . The painting system of claim 4 , wherein the paint applicator includes a plurality of nozzles and a plurality of actuators configured to adjust positions of the plurality of nozzles, respectively, relative to the paint applicator.

10 . The painting system of claim 9 , wherein the controller is configured to adjust positions of the plurality of actuators, respectively.

11 . A painting system for a vehicle, comprising:
G groups of mobile robots each including a paint applicator, where G is an integer greater than zero, wherein each of the G groups includes two or more mobile robots configured to paint a respective one of G paint colors; and a first controller configured to:
determine a first color of a first surface to be painted;
select R of the mobile robots in a first one of the G groups corresponding to the first color, where R is an integer greater than zero and less than or equal to G;
assign R portions of the first surface to the R mobile robots of the first one of the G groups, respectively; and
send R sets of instructions to the R mobile robots of the first one of the G groups, respectively, to paint the R portions of the first surface.

12 . The painting system of claim 11 , wherein the first controller is configured to communicate with the R mobile robots of the first one of the G groups during painting of the first surface and to at least one of:
replace at least one of the R mobile robots with another mobile robot from the first one of the G groups when the at least one of the R mobile robots has a malfunction; and adjust at least one of the R portions of the first surface and send revised instructions based on the adjustment.

13 . The painting system of claim 11 , wherein the first controller is further configured to:
determine a second color of a second surface to be painted after the first surface, where the second color is different than the first color; select S of the mobile robots of a second one of the G groups corresponding to the second color, where S is an integer greater than zero and less than or equal to G; assign S portions of the second surface to be painted to the S mobile robots of the second one of the G groups; and send S sets of instructions to the S mobile robots of the second one of the G groups, respectively, to paint S corresponding portions of the second surface.

14 . The painting system of claim 11 , wherein each of the mobile robots includes:
a frame; wheels connected to the frame; a motor configured to move the wheels to position the mobile robot; a paint container mounted on the mobile robot and configured to store paint; and a robot arm including a first end mounted on the mobile robot and a paint applicator arranged at a second end of the robot arm, wherein the paint applicator is in fluid communication with the paint container and includes one or more nozzles to spray the paint onto the first surface.

15 . The painting system of claim 11 , wherein:
the paint applicator comprises one of an overspray-free paint applicator and a high transfer efficiency paint applicator, and the first surface corresponds to a surface of a vehicle.

16 . The painting system of claim 11 , wherein the paint applicator includes a plurality of nozzles and a plurality of actuators configured to adjust positions of the plurality of nozzles, respectively.

17 . The painting system of claim 14 , wherein each of the mobile robots includes a second controller configured to control movement of at least one of the mobile robot, the robot arm, and the paint applicator.

18 . The painting system of claim 17 , further comprising:
a vision guidance system configured to communicate with the second controller, to take at least one of images and video of the first surface, and to determine a position of at least one of the mobile robot, the robot arm, and the paint applicator based on the at least one of images and video of the first surface, wherein the second controller is configured to position the at least one of the mobile robot, the robot arm, and the paint applicator in response to the vision guidance system.

19 . The painting system of claim 18 , wherein:
the first surface corresponds to a surface of a vehicle and further comprising an end effector including an arm, wherein the second controller is configured to control a position of the arm of the end effector to manipulate a swing panel of the vehicle.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Spicer John Patrick
• Zhao Xiang
• Fan Hua-Tzu
• Saez Miguel Arturo
• Arinez Jorge F

Classifications

• B25J11/0075

  Manipulators for painting or coating · CPC title

• 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

• G05B2219/45065

  Sealing, painting robot · CPC title

• B25J19/023

  including video camera means · CPC title

• B25J15/0061

  mounted on a modular gripping structure · CPC title