Method and apparatus for forming core assemblies

Details Method and apparatus for forming core assemblies Method and apparatus for forming core assemblies

1990-07-02

1991-05-14

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29466, 29512, 29523, 29727, 29890046, B21D 5302

Patent

active

050144227

ABSTRACT:
A method and apparatus for forming core assemblies comprising supporting a plurality of flattened tubes in horizontally spaced relationship, applying forces to the ends of the tubes to align the tubes, interposing undulating fins between adjacent tubes, providing a stop for holding the ends of the tubes at one end in alignment, retracting the force on the opposite ends of the tubes applying a compacting force to the array tubes and undulating fins transversely of the tubes by applying forces to end plates, applying a force to a header plate to force the opposite ends of the tubes through openings in the header plate, applying a deforming force to the opposite ends of the tubes against the outer surface of the header plate to move any unaligned tubes into alignment with the remainder of the tubes against the stop, retracting the stop, applying a force to another header plate to force the one ends of the tubes through openings in the header plate and applying a deforming force to the one ends of the tubes onto the other header plate.

REFERENCES:
patent: 4391027 (1983-07-01), Fleury
patent: 4597171 (1986-07-01), Kitayama et al.
patent: 4611375 (1986-09-01), Zapawa
patent: 4631813 (1986-12-01), Daniels et al.
patent: 4637133 (1987-01-01), Freeman
patent: 4830259 (1989-05-01), Lewis

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