System and method for indicating degraded operation of a robotic paint station

{
  "publication_number": "US10974268B2",
  "country": "US",
  "kind": "B2",
  "title": "System and method for indicating degraded operation of a robotic paint station",
  "abstract": "A system for indicating degraded operation of a robotic paint station is provided. The system includes a paint nozzle operable to spray paint upon a work piece, a paint supply tube system including a plurality of paint supply tubes operable to supply a flow of paint to the paint nozzle, a vacuum system connected to the paint supply tube system and operable to remove air pockets from the paint supply tube system, a pressure sensor connected to the vacuum system, and a computerized robot control module. The computerized robot control module is programmed to monitor data from the pressure sensor, compare the data to a threshold pressure value, and generate a maintenance warning indicating degraded vacuum system operation based upon the comparing.",
  "claims": [
    "1. A system for indicating degraded operation of a robotic paint station, comprising: a paint nozzle operable to spray paint upon a work piece; a paint supply tube system comprising a plurality of paint supply tubes operable to supply a flow of paint to the paint nozzle; a vacuum system connected to the paint supply tube system and operable to remove air pockets from the paint supply tube system; a pressure sensor connected to the vacuum system; and a computerized robot control module programmed to: monitor data from the pressure sensor; compare the data to a threshold pressure value; and generate a maintenance warning indicating degraded vacuum system operation based upon the compared data; and wherein the vacuum system is connected to the paint supply tube system with a low pressure tube; and wherein the pressure sensor is operable to monitor pressure in the low pressure tube.",
    "2. The system of claim 1, wherein the paint supply tube system further comprises a color changer module operable to provide a plurality of different color paints; and wherein the vacuum system is operable to remove the air pockets from the paint supply tube system as the system is changing between one of the plurality of different color paints to a second of the plurality of different color paints.",
    "3. The system of claim 1, wherein the vacuum system comprises a venturi tube vacuum system comprising a low pressure area within the venturi tube vacuum system; and wherein the pressure sensor is connected to the low pressure area.",
    "4. The system of claim 1, wherein the computerized robot control module is further programmed to: compare the data to a critical threshold pressure value selected to indicate that the robotic paint station has ceased to adequately operate; and stop operation of the robotic paint station based upon the comparing to the critical threshold pressure value.",
    "5. The system of claim 1, further comprising a paint canister comprising a plunger piston controlling the flow of paint to the paint nozzle.",
    "6. The system of claim 1, wherein the vacuum system comprises a mechanical vacuum system.",
    "7. The system of claim 1, wherein the threshold pressure value is selected based upon a predicted failure of the vacuum system to remove the air pockets from the paint supply tube system.",
    "8. The system of claim 1, wherein the threshold pressure value is selected based upon degraded operation of the vacuum system indicating a future problem.",
    "9. The system of claim 1, further comprising a high pressure area comprising an air pressure creating device operable to create a higher than ambient air pressure within the high pressure area; and wherein the computerized robot control module and the pressure sensor are located within the high pressure area.",
    "10. The system of claim 9, wherein the high pressure area is located on an articulating arm of the robotic paint station.",
    "11. The system of claim 1, wherein the maintenance warning comprises a localized alarm comprising one of a warning light, a robot stoppage, an audible alarm, and a call for maintenance over an audio system.",
    "12. The system of claim 1, wherein the maintenance warning comprises a computerized prompt comprising one of a computerized prompt for immediate maintenance, a computerized message to a responsible manager, a computerized prompt for a scheduled maintenance event, and a computerized statistical value for facility management software.",
    "13. A system for indicating degraded operation of a robotic paint station, comprising: a paint nozzle operable to spray paint upon a work piece; a paint supply tube system comprising a plurality of paint supply tubes operable to supply a flow of paint to the paint nozzle; a vacuum system connected to the paint supply tube system and comprising a venturi tube vacuum system comprising a low pressure area within the venturi tube vacuum system, the vacuum system operable to remove air pockets from the paint supply tube system; a pressure sensor connected to the low pressure area within the venturi tube vacuum system; and a computerized robot control module programmed to: monitor data from the pressure sensor; compare the data to a threshold pressure value, the threshold pressure value selected based upon degraded operation of the vacuum system indicating a future problem; and generate a maintenance warning indicating degraded vacuum system operation based upon the comparing; and wherein the paint supply tube system further comprises a color changer module operable to provide a plurality of different color paints; and wherein the vacuum system is operable to remove the air pockets from the paint supply tube system as the system is changing between one of the plurality of different color paints to a second of the plurality of different color paints.",
    "14. The system of claim 13, further comprising a high pressure area comprising an air pressure creating device operable to create a higher than ambient air pressure within the high pressure area; and wherein the computerized robot control module and the pressure sensor are located within the high pressure area.",
    "15. A method for operating a robotic paint station, comprising: utilizing a robotic paint station comprising a paint nozzle to spray paint upon a work piece; changing a color of paint sprayed by the robotic paint station, the changing comprising: purging a paint supply tube system of a first color of paint with pressurized air; evacuating the pressurized air from the paint supply tube system with a vacuum system; and charging the paint supply tube system with a second color of paint; and indicating degraded performance of the robotic paint station by monitoring a pressure within the vacuum system, comparing the monitored pressure to a threshold pressure value, and generating a maintenance warning indicating degraded vacuum system operation based upon the comparing.",
    "16. The method of claim 15, wherein the vacuum system comprises a venturi tube vacuum system comprising a low pressure area within the venturi tube vacuum system; and wherein monitoring the pressure within the vacuum system comprises monitoring a pressure within the low pressure area.",
    "17. The method of claim 15, wherein generating the maintenance warning comprises generating a localized alarm comprising one of generating a warning light, causing a robot stoppage, generating an audible alarm, and generating a call for maintenance over an audio system.",
    "18. The method of claim 15, wherein generating the maintenance warning comprises generating a computerized prompt comprising one of generating a computerized prompt for immediate maintenance, generating a computerized message to a responsible manager, generating a computerized prompt for a scheduled maintenance event, and generating a computerized statistical value for facility management software.",
    "19. The system of claim 13, further comprising a high pressure area comprising an air pressure creating device operable to create a higher than ambient air pressure within the high pressure area; and wherein the computerized robot control module and the pressure sensor are located within the high pressure area."
  ],
  "description_excerpt": "The disclosure generally relates to a system and method for indicating degraded operation of a robotic paint station. Paint may be dispensed or sprayed from a robotic arm onto a work piece being painted. A typical work piece may include any item. In one embodiment, a metallic and/or polymerized body of a vehicle can be painted. A paint supply tube channels a flow of paint to a nozzle, and movement of the robotic arm can move the nozzle through a desired motion or sequences of motions to provide desired paint coverage upon the work piece being painted. According to one exemplary embodiment, an electrostatic charge can be applied to the paint being sprayed, and the work piece being painted may be grounded to cause the paint particles to be attracted to the work piece.\n\nA system for indicating degraded operation of a robotic paint station is provided. The system includes a paint nozzle operable to spray paint upon a work piece, a paint supply tube system including a plurality of paint supply tubes operable to supply a flow of paint to the paint nozzle, a vacuum system connected to the paint supply tube system and operable to remove air pockets from the paint supply tube system, a pressure sensor connected to the vacuum system, and a computerized robot control module. The computerized robot control module is programmed to monitor data from the pressure sensor, compare the data to a threshold pressure value, and generate a maintenance warning indicating degraded vacuum system operation based upon the comparing.",
  "cpc": [
    "B05B 12/008",
    "B05B 12/004",
    "B05B 12/08",
    "B05B 12/149",
    "B05B 13/0431",
    "B05B 9/0413",
    "B25J 11/0075",
    "B25J 9/1674",
    "G05B 2219/45065",
    "G06Q 10/20",
    "G08B 21/182",
    "G08B 7/06"
  ],
  "ipc": [
    "B05B 12/00",
    "B25J 11/00",
    "B25J 9/16",
    "G06Q 10/00",
    "G08B 21/18",
    "G08B 7/06"
  ],
  "assignees": [
    "GM GLOBAL TECH OPERATIONS LLC"
  ],
  "inventors": [
    "JONES STEVEN HAWTHORNE",
    "CIESLIK MICHAEL ANDREW",
    "BRENNER JAMES"
  ],
  "filing_date": "2019-08-09",
  "publication_date": "2021-04-13",
  "grant_date": "2021-04-13",
  "priority_date": "2019-08-09",
  "application_number": "US-201916536916-A",
  "family_id": "74499656",
  "citations": [
    "US2006057421A1",
    "US2010196616A1",
    "US5823637A",
    "US9987509B1"
  ]
}