Overspray-free robotic paint system including fixture lifting, positioning, and orienting robots

Patent metadata

Field	Value
Publication number	US-12576511-B2
Application number	US-202217970096-A
Country	US
Kind code	B2
Filing date	Oct 20, 2022
Priority date	Oct 20, 2022
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

An overspray-free paint system includes: a paint robot including an overspray-free paint applicator; and a first fixture robot for lifting and orienting a fixture assembly relative to at least one of the paint robot and the overspray-free paint applicator, the fixture assembly configured to hold an object to be painted by the overspray-free paint applicator, the first fixture robot including a first gripper configured to grab a first portion of the fixture assembly, and the first fixture robot configured to lift and orient the fixture assembly via the first gripper.

First claim

What is claimed is:

1 . An overspray-free paint system comprising:
a paint robot comprising an overspray-free paint applicator; a fixture assembly configured to hold an object, which is to be painted by the overspray-free paint applicator, in a fixed position relative to the fixture assembly; a first fixture robot configured to lift and orient the fixture assembly relative to at least one of the paint robot and the overspray-free paint applicator, the first fixture robot comprising a first gripper configured to grab a first portion of the fixture assembly, and the first fixture robot configured to lift and orient the fixture assembly via the first gripper, wherein the fixture assembly comprises slides and fixturing devices configured to clamp down the object to a fixture base of the fixture assembly; a pump; and a first control module configured to control operation of the pump to draw at least one of a gas or a vapor through the fixture assembly.

2 . The overspray-free paint system of claim 1 , further comprising a second control module configured to adjust at least one of position and operation of the overspray-free paint applicator based on feedback,
wherein the paint robot comprises a vision system configured to at least one of monitor movement and painting of the overspray-free paint applicator and provide the feedback to the second control module.

3 . The overspray-free paint system of claim 1 , wherein:
the paint robot comprises a second control module; and the first fixture robot comprises the first control module configured to communicate with and synchronize timing with the second control module.

4 . The overspray-free paint system of claim 1 , wherein the first fixture robot is configured to adjust roll and pitch of the fixture assembly and the object such that surfaces of the object to be painted are horizontal and perpendicular to the overspray-free paint applicator when painted.

5 . The overspray-free paint system of claim 1 , further comprising a second fixture robot configured to grab, position and orient the fixture assembly in cooperation with the first fixture robot.

6 . The overspray-free paint system of claim 1 , wherein:
the paint robot provides six degrees-of-freedom movement of the overspray-free paint applicator; and the first fixture robot provides six degrees-of-freedom movement of the fixture assembly and the object.

7 . The overspray-free paint system of claim 1 , wherein the paint robot and the first fixture robot are configured to position and orient the overspray-free paint applicator and the fixture assembly to maintain the overspray paint applicator in a perpendicular arrangement relative to curved surfaces of the object being painted.

8 . The overspray-free paint system of claim 1 , wherein:
the object is at least one of a vehicle component and a body-in-white, and the first fixture robot is configured to move the at least one of the vehicle component and the body-in-white in X, Y, Z directions relative to the paint robot and adjust roll, pitch and yaw of the at least one of the vehicle component and the body-in-white relative to a base of the first fixture robot.

9 . The overspray-free paint system of claim 1 , wherein:
the fixture assembly comprises a side gripping extension; and the first gripper is configured to grab the side gripping extension.

10 . The overspray-free paint system of claim 1 , wherein the fixture assembly comprises actuators configured to independently move the slides and the fixturing devices relative to the fixture base.

11 . The overspray-free paint system of claim 1 , wherein the fixture base comprises at least one of a cavity and a channel for through which the at least one of the gas or the vapor pass is drawn via the pump.

12 . An overspray-free paint system comprising:
a paint robot comprising an overspray-free paint applicator; a first fixture robot for lifting and orienting a fixture assembly relative to at least one of the paint robot and the overspray-free paint applicator, the fixture assembly configured to hold an object to be painted by the overspray-free paint applicator, the first fixture robot comprising a first gripper configured to grab a first portion of the fixture assembly, and the first fixture robot configured to lift and orient the fixture assembly via the first gripper; and a second fixture robot configured to grab, position and orient the fixture assembly in cooperation with the first fixture robot, wherein the second fixture robot comprises
a second gripper configured to grab a second portion of the fixture assembly; and
a selective compliance device connected between an arm of the second fixture robot and the second gripper and configured to compensate for misalignment between the first gripper and the second gripper.

Assignees

• Gm Global Tech Operations Llc

Inventors

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

Classifications

• B25J11/0075

  Manipulators for painting or coating · CPC title

• B25J9/1697

  Vision controlled systems · CPC title

• B25J9/1641

  compensation for backlash, friction, compliance, elasticity in the joints · CPC title

• B25J9/0084

  comprising a plurality of manipulators · CPC title

• B05B13/0452

  the objects being vehicle components, e.g. vehicle bodies · CPC title