Robotic paint repair

Patent metadata

Field	Value
Publication number	US-11850695-B2
Application number	US-202017756446-A
Country	US
Kind code	B2
Filing date	Nov 24, 2020
Priority date	Nov 27, 2019
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

A disc changing system for a robotic defect repair system is presented. The system has a first abrasive disc and a second abrasive disc. The first and second abrasive discs are coupled to a liner. The system includes an abrasive disc placement device configured to automatically: remove the first abrasive disc from the liner, transport the first abrasive disc to a robotic tool of the robotic defect repair system, and place the first abrasive disc on a backup pad coupled to the robotic tool. The system also includes an abrasive disc remover configured to automatically remove the first abrasive disc after receiving a removal signal. The system also includes a controller configured to send an instruction to the disc placement device to remove, transport and place the first abrasive disc, instruct the robotic tool to conduct an abrasive operation. The controller is also configured to send the removal signal. The controller is a processor and the instructions are stored on a non-transitory computer-readable medium and executed by the processor.

First claim

What is claimed is:

1. A disc changing system for a robotic defect repair system, the disc changing system comprising:
a first abrasive disc and a second abrasive disc, wherein the first and second abrasive discs are coupled to a liner;
an abrasive disc placement device configured to automatically:
remove the first abrasive disc from the liner;
transport the first abrasive disc to a robotic tool of the robotic defect repair system; and
place the first abrasive disc on a backup pad coupled to the robotic tool;

an abrasive disc remover configured to automatically remove the first abrasive disc after receiving a removal signal; and
a controller configured to send an instruction to the disc placement device to remove, transport and place the first abrasive disc, instruct the robotic tool to conduct an abrasive operation, and wherein the controller is also configured to send the removal signal, wherein the controller is a processor and the instructions are stored on a non-transitory computer-readable medium and executed by the processor.

2. The system of claim 1 , and further comprising an abrasive disc verification system configured to validate placement of the abrasive disc on the backup pad and wherein the controller is configured to receive a validation signal from the disc changing system and, based on the validation signal, instruct the robotic tool to conduct the abrasive operation.

3. The system of claim 1 , wherein the controller is configured to, in response to the disc placement device removing the first abrasive disc, change an index of the disc changing system and advance the second abrasive disc such that, after the first abrasive disc is removed, the second abrasive disc can be removed, transported and placed by the disc placement device.

4. The system of claim 1 , wherein the disc changing system also includes a sensor configured to validate placement of the first abrasive disc and send the validation signal, and wherein the first abrasive disc has a color, the sensor is a color sensor, and the sensor validates placement of the first abrasive disc by detecting the color.

5. The system of claim 4 , wherein the color is a first color, and wherein the backup pad has a second color, and wherein the sensor does not send the validation signal if the second color is detected.

6. The system of claim 1 , wherein the system also includes a dryer and wherein the dryer, in response to a drying instruction from the controller, blows air at the backup pad, and wherein the controller sends the drying instruction after the disc remover removes the first abrasive disc from the backup pad.

7. The system of claim 1 , wherein the system also includes a cleaner that, in response to a cleaning instruction from the controller, cleans the first abrasive disc.

8. The system of claim 7 , wherein the cleaner is a brush that agitates the first abrasive disc to remove built up swarf.

9. The system of claim 1 , wherein the first abrasive disc couples to the backup pad using adhesive present on a backside of the first abrasive disc or wherein the first abrasive disc couples to the backup pad using a hook and loop system.

10. The system of claim 1 , wherein the system is separated into a robotic cell portion and an operator accessible portion, and wherein a source of abrasive discs in the operator accessible portion, and wherein the abrasive disc placement device and the abrasive disc remover are located in the robotic cell portion.

11. The system of claim 1 , wherein the abrasive disc placement device removes the first abrasive disc from the liner using at least one of a blower, a vacuum generating suction, and a breaker bar.

Assignees

• 3M Innovative Properties Company

Inventors

• Nienaber Aaron K
• Orlando Mark W
• Herbst Nathan J
• Vitale Christie L
• Eberwein Marc
• Hemes Brett R
• Arthur Jonathan B
• Strey Thomas J

Classifications

• B24B27/0038 Primary

  with the grinding tool mounted at the end of a set of bars · CPC title

• B05D3/12

  by mechanical means · CPC title

• B05D5/005

  Repairing damaged coatings · CPC title

• B24B19/26

  for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads (grinding of spherical surfaces in general B24B11/00, of optical surfaces on lenses or surfaces of similar shape on other work B24B13/00) · CPC title

• B24B41/005

  Feeding or manipulating devices specially adapted to grinding machines (feeding, loading or unloading work specially adapted to lapping machines B24B37/345) · CPC title