Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1974-09-30
1976-04-06
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
93 77R, 93 82, 156443, 156466, B31F 100
Patent
active
039487121
ABSTRACT:
Method and apparatus for producing closed loop accordion pleated filters. Accordion pleated filter structures are advanced from a feeder hopper one at a time by pusher members and guided along guide means arranged in a converging fashion and which pass between the endmost pleats to bring the ends of the pleated filter toward one another. Second pusher means then move the pleated filter, which is now arranged in a substantially U-shaped configuration, along the guide members to orient the outermost pleats into a substantially common horizontal plane. Third pusher means move the outermost flaps upon a pair of blades and substantially surrounding one arm of a paddle wheel assembly. A suitable hot melt is deposited upon the surfaces of one of the outermost flaps. The blades swing downwardly and move toward one another to press the outermost flaps having a hot melt deposited thereon into firm engagement. The blades remain together for a period sufficient for the adhesive to at least partially "set" and are then lifted upwardly and away from the filter to prevent separation of the flaps joined by the hot melt. The paddle wheel supporting the completed filter element rotates towards stripper means which pushes the completed closed loop accordion pleated filter off of the paddle wheel arm and onto an output conveyor. The operation is completely automated from the time that the accordion pleated filters are placed in the infeed hopper.
REFERENCES:
patent: 2700260 (1955-01-01), Paulsen
patent: 2911778 (1959-11-01), Ozor
patent: 3035498 (1962-05-01), Molla
patent: 3336847 (1967-08-01), Durat
patent: 3385746 (1968-05-01), Rohn
Powell William A.
Simmons David A.
Sprinter System of America, Ltd.
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