Tool for moulding self-stiffened panels made from a composite ma

Details Tool for moulding self-stiffened panels made from a composite ma Tool for moulding self-stiffened panels made from a composite ma

1989-10-19

1991-05-14

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

264552, 264553, 264571, 425DIG60, B29C 3502

Patent

active

050151681

ABSTRACT:
For moulding self-stiffened panels (A) from a composite material with a thermosetting matrix, use is made of a tool having a block (10), a sealing bag (12), whose peripheral edge is connected to the block by a sealing bead (14), and solid, non-deformable calibration parts (22). Panel (A) is placed in a tight volume (16) defined between the block and the bag, while the parts (22) are placed outside said volume, above the bag and between the panel stiffeners (C). The calibration parts (22) are connected by a rigid structure (24). Thus, when the volume (16) is placed under a vacuum and when the tool is placed in an oven or autoclave, a uniform pressure is applied to the panel by the bag (12) and the parts (22) ensuring the maintenance of the geometry of the stiffeners.

REFERENCES:
patent: 3666600 (1972-05-01), Yoshino
patent: 3703422 (1972-11-01), Yoshino
patent: 3861977 (1975-01-01), Wiley
patent: 3972766 (1976-08-01), Fontvieille
patent: 4267147 (1981-05-01), Pogoda et al.
patent: 4608220 (1986-08-01), Caldwell et al.
patent: 4882118 (1989-11-01), Megarry
patent: 4915896 (1990-04-01), Rachal
Modern Plastics International, vol. 17, No. 4, Apr. 1987, pp. 44-47, Lausanne, CH: A. S. Wood: "Advanced Thermoplastic Composites Get the Full Automation Treatment".
Composite, vol. 23, No. 3, May-Jun. 1983, pp. 5-9, Paris, FR; G. Keil et al.: "Thermosetting Preimpregnated Materials and the Equipment Necessary for Obtaining Them".
Composites, vol. 19, No. 1, Jan. 1988, pp. 37-47, Butterworth & Co., Ltd., Guildford, Surrey, GB, P. J. Mallon et al.: "Development of a Pilot Autoclave for Polymeric Diaphragm Forming of Continuous Fibre-Reinforced Thermoplastics".

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