US 4,359,356 A · Method and apparatus for production of fiber reinforced wound bodies

Abstract

In the production of fiber reinforced axially symmetrical wound bodies each of predetermined length, by winding fibers or strands of fibers saturated with a hardenable plastic onto a mandrel, alternating layers of circumferential windings and layers with criss-cross windings being placed on top of one another, and, after hardening of the plastic, removing the mandrel, the winding is carried out to simultaneously produce a plurality of identical wound bodies axially juxtaposed on the mandrel by the steps of: winding at least one circumferential layer by attaching a plurality of fibers or strands corresponding to the number of bodies to be wound at axially spaced locations along the mandrel and winding all of the fibers or strands simultaneously on the mandrel with mutual axial spacings approximately corresponding to, or somewhat greater than, the length of each wound body; winding at least one criss-cross winding layer by attaching at least one fiber or strand to the mandrel and winding the fiber or strand over the combined length of the juxtaposed layers of circumferential windings along the mandrel; and dividing the completed wound layers into individual sections forming the respective wound bodies which are then removed from the mandrel.

Claims7

Dependent claims

In a method for producing fiber reinforced axially symmetrical wound bodies each of predetermined length, by winding fibers or strands of fibers saturated with a hardenable plastic onto a mandrel, alternating layers of circumferential windings and layers with criss-cross windings being placed on top of one another, and, after hardening of the plastic, removing the mandrel, the improvement wherein said step of winding is carried out to simultaneously produce a plurality of identical wound bodies axially juxtaposed on the mandrel and comprises:

winding at least one circumferential layer by attaching a plurality of fibers or strands corresponding to the number of bodies to be wound at axially spaced locations along the mandrel and winding all of the fibers or strands simultaneously on the mandrel with mutual axial spacings approximately corresponding to, or somewhat greater than, the length of each wound body;
winding at least one criss-cross winding layer by attaching at least one fiber or strand to the mandrel and winding the fiber or strand over the combined length of the juxtaposed layers of circumferential windings along the mandrel;
and dividing the completed wound layers into individual sections forming the respective wound bodies which are then removed from the mandrel.

In apparatus including a mandrel provided with a drive and two separate carriages movable parallel to the longitudinal axis of the mandrel, for producing fiber reinforced axially symmetrical wound bodies each of predetermined length, by winding fibers or strands of fibers saturated with a hardenable plastic onto the mandrel, alternating layers of circumferential windings and layers with criss-cross windings being placed on top of one another, and, after hardening of the plastic removing the mandrel, the improvement wherein said apparatus is arranged to simultaneously produce a plurality of identical wound bodies, axially juxtaposed on said mandrel;

one said carriage comprises a plurality of fiber supply devices equal in number to the number of wound bodies to be produced and said one carriage is mounted to be movable parallel to the longitudinal axis of said mandrel through a distance approximately equal to the axial length of each wound body, said one carriage serving to produce circumferential layers by attachment of a plurality of fibers or strands supplied by said supply devices and corresponding to the number of bodies to be wound at axially spaced locations along the mandrel and winding all of the fibers or strands simultaneously on said mandrel with mutual axial spacings approximately corresponding to, or somewhat greater than, the length of each wound body;
and the other said carriage comprises a single fiber supply device arranged to surround said mandrel and provided with at least one supply roller system arranged to supply a fiber or strand, and said other carriage is mounted to be movable parallel to the longitudinal axis of said mandrel through a distance corresponding to the combined axial lengths of all of the wound bodies, said other carriage serving to produce criss-cross winding layers by attachment of the fiber or strand supplied by said supply roller system and winding of that fiber or strand over the axial extent of said mandrel corresponding to the combined axial lengths of all of the wound bodies.

Dependencies are inferred from the claim text.

Method and apparatus for production of fiber reinforced wound bodies

Life of this patent

Method and apparatus for production of fiber reinforced wound bodies

Life of this patent

Abstract

Claims7