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US 5,131,349 AGranted
Application of primer coating
AssigneeLibbey-Owens-Ford Co.
InventorsThomas A. Keller, Wallace F. Krueger, Robert J. Sloma
Life of this patent
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AssigneeLibbey-Owens-Ford Co.
InventorsThomas A. Keller, Wallace F. Krueger, Robert J. Sloma
Estimating the term…
A system for applying a uniform band of liquid primer material to the marginal edge surfaces of glazing units upon which a plastic frame or gasket member is to be molded in place. A family of interchangeable applicator tips is provided for use with a dispensing device adapted to provide an on-demand supply of primer material to the tip in use. The different applicator tips of the family have configurations particularly adapted to applying bands of primer material along selected peripheral margins of a sheet member. Each is of a composite construction including a relatively rigid base member covered by a soft absorbent body for contacting and transferring to the sheet surface the layer of primer material. The tips are readily attachable to and removable from the primer material dispensing device. The dispensing device may comprise one or more applicator guns incorporated in a modular work station, including a closed storage and supply container for the primer material and a solvent flush system for cleaning hoses and flow guns of the reactive priming resins. The flow guns may be mounted upon an oscillating carriage whereby, in one position of the carriage, spent applicator tips are removed and replaced by new tips by a suitably programmed robot, and in another position the marginal edges of sheet members are moved along and through the applicator tips by a suitably programmed robot arm for application of a band of the primer material.
Apparatus for applying a band of liquid material to at least one peripheral marginal surface of a sheet of material comprising, dispensing means for containing and selectively dispensing a liquid material, a coupler member on said dispensing means, and an applicator tip including a coupling extension adapted for releasably mating with said coupler member and placing said applicator tip in fluid communication with said dispensing means, said applicator tip being adapted to receive said liquid material from said dispensing means and deposit a band of said liquid material in response to movement of said applicator tip relative to and in wiping contact with a peripheral marginal surface of a sheet of material, said applicator tip comprising a hollow, open-sided pad block member affixed to said coupling extension, the interior of said pad block member being in fluid communication with said coupling extension, and a transfer pad affixed within the hollow interior of said pad block member for receiving said liquid material from said dispensing means, said transfer pad comprising a porous, wicking material adapted for said wiping contact with said sheet surface for receiving said liquid material and depositing said band of material on said sheet surface, and including a guide block positioned within said pad block member for slidingly engaging an edge of said sheet as the applicator tip and sheet are moved relative to one another.
Apparatus for applying a band of liquid material as claimed in clam 3, wherein said lock means comprises a ring member for seating in opposed circumferential recesses in said coupling extension and said coupler member whereby said applicator tip is adapted for snap fitting on said dispensing means.
Apparatus for applying a band of liquid material as claimed in clam 1, wherein said transfer pad comprises a pad member adjacent to and extending outwardly beyond said pad block member for engaging a major peripheral surface of said sheet while said guide block engages the edge thereof.
Apparatus for applying a band of liquid material to at least one peripheral marginal surface of a sheet of material comprising, dispensing means for containing and selectively dispensing a liquid material, a coupler member on said dispensing means, and an applicator tip including a coupling extension adapted for releasably mating with said coupler member and placing said applicator tip in fluid communication with said dispensing means, said applicator tip being adapted to receive said liquid material from said dispensing means and deposit a band of said liquid material in response to movement of said applicator tip relative to and in wiping contact with a peripheral marginal surface of a sheet of material, said applicator tip comprising a hollow, open-sided block member affixed to said coupling extension, the interior of said pad block member being in fluid communication with said coupling extension, and a transfer pad affixed within the hollow interior of said pad block member for receiving said liquid material from said dispensing means, said transfer pad comprising a porous wicking material adapted for said wiping contact with said sheet surface for receiving said liquid material and depositing said band of material on said sheet surface, said transfer pad comprising a U-shaped pad member including spaced legs interconnected by a web for receiving the peripheral marginal edge of said sheet therein.
Apparatus for applying a band of liquid material to at least one peripheral marginal surface of a sheet of material comprising, dispensing means for containing and selectively dispensing a liquid material, a coupler member on said dispensing means, and an applicator tip including a coupling extension adapted for releasably mating with said coupler member and placing said applicator tip in fluid communication with said dispensing means, said applicator tip being adapted to receive said liquid material from said dispensing means and deposit a band of said liquid material in response to movement of said applicator tip relative to and in wiping contact with a peripheral marginal surface of a sheet of material, said applicator tip comprising a pad block member including said coupling extension and having a passage extending longitudinally therethrough in communication with said coupling extension, a perforate tubular insert having an open end received within said passage and a closed end projecting outwardly beyond said pad block member, and a sleeve of porous, wicking material covering said insert.
Apparatus for applying a band of liquid material to at least one peripheral marginal surface of a sheet of material comprising, dispensing means for containing and selectively dispensing a liquid material, a coupler member on said dispensing means, and an applicator tip including a coupling extension adapted for releasably mating with said coupler member and placing said applicator tip in fluid communication with said dispensing means, said applicator tip being adapted to receive said liquid material from said dispensing means and deposit a band of said liquid material in response to movement of said applicator tip relative to and in wiping contact with a peripheral marginal surface of a sheet of material, including a carriage mounted for rotary movement, said dispensing means comprising an applicator gun mounted on said carriage and connected to a source of said liquid material maintained under pressure, said applicator gun including a valve member actuable to discharge liquid material to said applicator tip, sheet carrying means for supporting said sheet in operative position to engage said applicator tip, and means providing relative movement between said sheet and said applicator tip whereby a band of said liquid material is deposited on said marginal surface, a carousel removably carrying a plurality of said applicator tips, and an arm including grasping means programmed to detach a first said applicator tip from said applicator gun and deposit it on said carousel and to retrieve a second said applicator tip from said carousel and attach it to said applicator gun in place of said first applicator tip.
Dependencies are inferred from the claim text.