Fiber placement head

Details Fiber placement head Fiber placement head

1989-12-04

1992-05-05

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

156175, 156425, 156433, 156441, 156523, B26D 520

Patent

active

051103958

ABSTRACT:
A fiber placement head for a fiber placement machine of the type in which a number of individual resin-impregnated fiber tows or "towpregs" are fed at independent rates from a creel assembly for application as a fiber band onto the surface of a mandrel includes cooling chutes for each fiber tow which reduces their temperature to reduce the tack of the tows. A cut, clamp and restart mechanism is provided wherein the cutting and clamping operations are performed by a unitary knife blade and clamping block, and the restart or rethreading of cut tows is obtained by the engagement of a pinch roller with a continuously rotating rethread shaft which are operative independently of the movement of the fiber placement head relative to the mandrel. The tows are pressed or compacted onto the mandrel by a compaction shoe, and feed and rewind rollers are provided to interpose a protective film between the compaction shoe and fiber band to avoid damage to the tows.

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Fiber Placement Process Study, by D. Evans, M. Vaniglia, P. Hopkins Published in SAMPE 34th Symposium Book of Proceeding, May 8-11, 1989.
Cincinnati Milacron company newspaper "Milacron Today"-vol. 4, No. 6, Jun., 1989.
American Machinist, Sep. 1989, p. 27 "Composite Shapes by Tow Placement".

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