US RE35,981 EGranted

System for cleaning molding equipment using a laser

AssigneeVernay Laboratories, Inc.

InventorsRobert E. Nagy, Timothy F. Shelton, Jeffrey L. Milam

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Abstract

A system for cleaning molds within presses is disclosed wherein the system utilizes a light source including a laser to clean surfaces within the mold. The light source is aligned with an opening in the mold and light from the laser is directed onto the mold surfaces to vaporize residual material thereon to thereby clean the surfaces. The light source may be formed as a portable unit movable between different presses, or the light source may be in the form of a single laser with a plurality of light paths leading from the laser to individual presses such that light may be selectively conveyed along the light paths to clean the molds within the presses.

Claims22

Dependent claims

..1. A method of cleaning equipment associated with a molding operation comprising the steps of:

aligning a light source including a laser with said equipment;
and
activating said laser to cause light from said light source to impinge on a surface of said equipment to thereby clean residual material from said surface..!...2. The method as in claim 1 wherein said laser is a pulsed
laser..!...3. The method as in claim 1 wherein said light source is portable, and including the step of moving said light source from alignment with a first surface of said equipment located at a first station into alignment with a second surface of said equipment located at a second station..!...4. The method as in claim 1 wherein said light source comprises a single laser and a plurality light paths for conveying light from said laser to a plurality of distinct molding stations, and including the step of selectively activating said light paths to selectively clean equipment associated with each of said stations..!...5. The method as in claim 1 wherein said light source includes an optical fiber defining a movable output end for alignment with said surface, said optical fiber defining a flexible and movable conduit for said light and said step of aligning said light source comprises an operator holding said output end adjacent to said surface..!...6. The method as in claim 5 wherein a plurality of optical fibers having output ends are provided defining a plurality of light sources for cleaning equipment at a plurality of separate stations, and including the step of conveying light from a single laser to each of said stations..!...7. The method as in claim 6 including the step of selectively activating one of said optical fibers to clean equipment at a first station, and subsequently deactivating said one optical fiber and activating another optical fiber to clean equipment at a second station..!...8. The method as in claim 1 including the step of cleaning additional equipment surfaces by reflecting said light off of said surface and onto said additional surfaces..!...9. The method as in claim 1 wherein said step of activating said laser causes said residual material to be vaporized..!...10. The method as in claim 9 wherein said step of activating said laser further causes said residual material to be blown off of said surface as material underneath the material to be blown off is vaporized..!...11. A method of cleaning a surface comprising the steps of:
providing a light source including an optical fiber and a laser;
aligning an output end of said optical fiber with said surface;
and
activating said laser to cause light to pass through said optical fiber to said output end and impinge on said surface to thereby clean residual material from said surface..!...12. The method as in claim 11 wherein said laser is a pulsed laser..!...13. The method as in claim 11 wherein said optical fiber defines a flexible and movable conduit for said light and said step of aligning said output end comprises an operator holding said output end adjacent to said surface..!...14. The method as in claim 11 wherein a plurality of optical fibers having output ends are provided defining a plurality of light sources for cleaning surfaces at a plurality of separate stations, and including the step of conveying light from a single laser to each of said stations..!...15. The method as in claim 14 including the step of selectively activating one of said optical fibers to clean a surface at a first station, and subsequently deactivating said one optical fiber and activating another optical fiber to clean a surface at a
second station..!...16. The method as in claim 11 wherein said cleaning is performed on a surface located on equipment associated with a molding operation..!...17. A method of cleaning equipment associated with a molding operation comprising the steps of:
providing a light source including a plurality of optical fibers and a single pulsed laser, each said optical fiber having an output end located at a molding station;
aligning an output end of a first optical fiber with a first surface in a first molding station;
activating said first optical fiber to thereby clean residual material from said first surface;
aligning an output end of a second optical fiber with a second surface in a second molding station;
deactivating said first optical fiber and activating said second optical fiber to clean said second surface;
and
wherein said steps of aligning said output ends of said first and second optical fibers comprises an operator holding said output ends adjacent to said first and second surfaces, respectively..!...18. A cleaning system for use in combination with equipment associated with a molding operation, said system comprising:
a light source including a laser;
means for aligning said light source with said equipment;
and
wherein activation of said laser with said light source aligned with said equipment causes residual material attached to surfaces of said equipment to be removed..!...19. The system as in claim 18 wherein said laser is a pulsed laser..!...20. The system as in claim 18 wherein said means for aligning comprises a light pen having an end adapted to be positioned adjacent to said surfaces of said equipment, said light pen being connected to said laser through a fiber optic connection..!...21. The system as in claim 18 wherein said light source is formed as a portable unit for movement to locations adjacent to a plurality of molds located at different molding stations..!...22. A cleaning system comprising:
a light source including an optical fiber and a laser;
said optical fiber defining a flexible and movable conduit for conveying light from said laser and including an output end for alignment with a surface to be cleaned;
and
wherein activation of said laser with said output end positioned in alignment with said surface causes residual material attached to said surface to be removed..!...23. The system as in claim 22 wherein said laser is a pulsed laser..!...24. The systems in claim 22 including a plurality of optical fibers having output ends located at a plurality of separate stations wherein light is conveyed from said laser through said optical fibers to perform a cleaning operation at each of said stations..!...25. The system as in claim 22 including molding equipment, said surface being located on said molding equipment and said output end being located adjacent to said surface..!...26. A cleaning system for use in combination with equipment associated with a molding operation, said system comprising:
a light source comprising a plurality of optical fibers and a pulsed laser;
said optical fibers defining flexible and movable conduits for light from said laser, each said optical fiber including an output end located at a respective molding station for alignment with a surface on said equipment to be cleaned;
and
wherein activation of said laser with said output ends aligned with said surfaces causes residual material attached to said surfaces to be
removed..!.

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Dependencies are inferred from the claim text.

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Abstract

..1. A method of cleaning equipment associated with a molding operation comprising the steps of:

aligning a light source including a laser with said equipment;
and
activating said laser to cause light from said light source to impinge on a surface of said equipment to thereby clean residual material from said surface..!...2. The method as in claim 1 wherein said laser is a pulsed
laser..!...3. The method as in claim 1 wherein said light source is portable, and including the step of moving said light source from alignment with a first surface of said equipment located at a first station into alignment with a second surface of said equipment located at a second station..!...4. The method as in claim 1 wherein said light source comprises a single laser and a plurality light paths for conveying light from said laser to a plurality of distinct molding stations, and including the step of selectively activating said light paths to selectively clean equipment associated with each of said stations..!...5. The method as in claim 1 wherein said light source includes an optical fiber defining a movable output end for alignment with said surface, said optical fiber defining a flexible and movable conduit for said light and said step of aligning said light source comprises an operator holding said output end adjacent to said surface..!...6. The method as in claim 5 wherein a plurality of optical fibers having output ends are provided defining a plurality of light sources for cleaning equipment at a plurality of separate stations, and including the step of conveying light from a single laser to each of said stations..!...7. The method as in claim 6 including the step of selectively activating one of said optical fibers to clean equipment at a first station, and subsequently deactivating said one optical fiber and activating another optical fiber to clean equipment at a second station..!...8. The method as in claim 1 including the step of cleaning additional equipment surfaces by reflecting said light off of said surface and onto said additional surfaces..!...9. The method as in claim 1 wherein said step of activating said laser causes said residual material to be vaporized..!...10. The method as in claim 9 wherein said step of activating said laser further causes said residual material to be blown off of said surface as material underneath the material to be blown off is vaporized..!...11. A method of cleaning a surface comprising the steps of:
providing a light source including an optical fiber and a laser;
aligning an output end of said optical fiber with said surface;
and
activating said laser to cause light to pass through said optical fiber to said output end and impinge on said surface to thereby clean residual material from said surface..!...12. The method as in claim 11 wherein said laser is a pulsed laser..!...13. The method as in claim 11 wherein said optical fiber defines a flexible and movable conduit for said light and said step of aligning said output end comprises an operator holding said output end adjacent to said surface..!...14. The method as in claim 11 wherein a plurality of optical fibers having output ends are provided defining a plurality of light sources for cleaning surfaces at a plurality of separate stations, and including the step of conveying light from a single laser to each of said stations..!...15. The method as in claim 14 including the step of selectively activating one of said optical fibers to clean a surface at a first station, and subsequently deactivating said one optical fiber and activating another optical fiber to clean a surface at a
second station..!...16. The method as in claim 11 wherein said cleaning is performed on a surface located on equipment associated with a molding operation..!...17. A method of cleaning equipment associated with a molding operation comprising the steps of:
providing a light source including a plurality of optical fibers and a single pulsed laser, each said optical fiber having an output end located at a molding station;
aligning an output end of a first optical fiber with a first surface in a first molding station;
activating said first optical fiber to thereby clean residual material from said first surface;
aligning an output end of a second optical fiber with a second surface in a second molding station;
deactivating said first optical fiber and activating said second optical fiber to clean said second surface;
and
wherein said steps of aligning said output ends of said first and second optical fibers comprises an operator holding said output ends adjacent to said first and second surfaces, respectively..!...18. A cleaning system for use in combination with equipment associated with a molding operation, said system comprising:
a light source including a laser;
means for aligning said light source with said equipment;
and
wherein activation of said laser with said light source aligned with said equipment causes residual material attached to surfaces of said equipment to be removed..!...19. The system as in claim 18 wherein said laser is a pulsed laser..!...20. The system as in claim 18 wherein said means for aligning comprises a light pen having an end adapted to be positioned adjacent to said surfaces of said equipment, said light pen being connected to said laser through a fiber optic connection..!...21. The system as in claim 18 wherein said light source is formed as a portable unit for movement to locations adjacent to a plurality of molds located at different molding stations..!...22. A cleaning system comprising:
a light source including an optical fiber and a laser;
said optical fiber defining a flexible and movable conduit for conveying light from said laser and including an output end for alignment with a surface to be cleaned;
and
wherein activation of said laser with said output end positioned in alignment with said surface causes residual material attached to said surface to be removed..!...23. The system as in claim 22 wherein said laser is a pulsed laser..!...24. The systems in claim 22 including a plurality of optical fibers having output ends located at a plurality of separate stations wherein light is conveyed from said laser through said optical fibers to perform a cleaning operation at each of said stations..!...25. The system as in claim 22 including molding equipment, said surface being located on said molding equipment and said output end being located adjacent to said surface..!...26. A cleaning system for use in combination with equipment associated with a molding operation, said system comprising:
a light source comprising a plurality of optical fibers and a pulsed laser;
said optical fibers defining flexible and movable conduits for light from said laser, each said optical fiber including an output end located at a respective molding station for alignment with a surface on said equipment to be cleaned;
and
wherein activation of said laser with said output ends aligned with said surfaces causes residual material attached to said surfaces to be
removed..!.

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