Fiber bundle extraction device, fiber bundle extraction method, and method for manufacturing fiber composite material

Abstract

Provided is a fiber bundle drawing-out device capable of drawing out a fiber bundle having a cross-sectional shape that is long in the lateral direction and is wound around a bobbin while maintaining the cross-sectional shape and moving the fiber bundle in a certain trajectory. The fiber bundle drawing-out device includes a bobbin holder that holds the bobbin in a rotatable state; a twisting mechanism that receives the fiber bundle drawn out from the bobbin, twists the fiber bundle, and feeds out the fiber bundle, thereby reducing variation in the trajectory of the fiber bundle in a direction parallel to the central axis of the bobbin; and a kinking prevention mechanism that is provided between the bobbin holder and the twisting mechanism in the path of the fiber bundle in the device, has a support portion that comes into contact with the fiber bundle, and has a rotation prevention portion that is arranged opposite the support portion with a gap that has a spacing of more than the thickness of the fiber bundle and less than the width of the fiber bundle.

Claims

1. A fiber bundle extraction device, which extracts the fiber bundle from a winding tube with the fiber bundle cross-wound, the fiber bundle extraction device comprising: A winding tube retainer holds the winding tube in a rotatable state; A torsion mechanism receives the fiber bundle drawn from the winding tube, torsionals the fiber bundle, and delivers it, thereby reducing the variation in the trajectory of the fiber bundle in a direction parallel to the central axis of the winding tube; and A twist prevention mechanism is provided in the path of the fiber bundle in the device between the winding tube holder and the twisting mechanism. It has a support portion and a rotation suppression portion. The support portion contacts the fiber bundle, and the rotation suppression portion is positioned opposite the support portion with a gap between the thickness of the fiber bundle and its width, allowing the fiber bundle to pass through. The twisting prevention mechanism is configured to be able to adjust the interval.

2. The fiber bundle extraction device according to claim 1, The support portion is configured as a roller capable of rotating around an axis parallel to the rotation axis of the winding tube.

3. The fiber bundle extraction device according to claim 1 or 2, The rotation-stopping part has a rod, which is configured such that the length direction of the rod is parallel to the direction of the rotation axis of the winding tube.

4. The fiber bundle extraction device according to claim 1 or 2, The twisting prevention mechanism is configured to move parallel to the direction of the rotation axis of the winding tube in response to changes in the trajectory of the fiber bundle drawn from the winding tube.

5. A method for drawing out a fiber bundle, comprising drawing out the fiber bundle from a winding tube with the fiber bundle cross-wound. The fiber bundle extraction method uses the apparatus of any one of claims 1 to 4 to continuously extract the fiber bundle from the winding tube.

6. The fiber bundle extraction method according to claim 5, The interval is set to be less than 50% of the width of the fiber bundle.

7. A method for manufacturing a fiber composite material, comprising fiber bundles and a resin impregnated with said fiber bundles, The method for manufacturing the fiber composite material includes a step of drawing out the fiber bundle from the winding tube on which the fiber bundle is cross-wound using the fiber bundle drawing device of any one of claims 1 to 4, or the fiber bundle drawing method of claim 5 or 6.

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