Apparatus for bending and forming a composite material sheet

Details Apparatus for bending and forming a composite material sheet Apparatus for bending and forming a composite material sheet

1992-03-03

1992-12-22

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

By fluid pressure actuated flexible diaphragm

425396, 425406, 100211, B29C 5300

Patent

active

051733145

ABSTRACT:
For forming a resin-impregnated, fiber reinforced composite material sheet having laminated meshes of fibers into a U-shaped cross section, the sheet is placed onto a stationary forming die and an auxiliary forming die with the fibers of the sheet forming angles of approximately 45.degree. relative to opposite edges of an upper reference forming surface of the stationary die. Then, the sheet is pressed from above by a pneumatically expandable, elastic depressing die, whereby the auxiliary forming die is lowered against a resilient force relative to the stationary forming die. As the sheet is pressed further downwardly by the depressing die, the parts of the sheet which are to form flanges of the product are firmly held between the depressing die and the auxiliary forming die and bent downwards while the parts are subjected to extending forces in directions to prevent creases and lines from being formed by means of auxiliary forming ridges on the auxiliary forming die.

REFERENCES:
patent: 1483452 (1924-02-01), Keyes
patent: 3054144 (1962-09-01), Goodwin et al.
patent: 3614811 (1971-10-01), Johnson
patent: 4034054 (1977-07-01), Sauer
patent: 4061457 (1977-12-01), Butler
patent: 4576566 (1986-03-01), Hain
patent: 4708626 (1987-11-01), Sakai et al.
patent: 4826420 (1989-05-01), Frey
patent: 4948355 (1990-08-01), Knoll

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