There is disclosed a lay-up head for applying elongate fiber reinforcement material to an application surface. The lay-up head comprises a guide eyelet through which elongate fiber reinforcement material is arranged to pass into the lay-up head. The guide eyelet has an eyelet rim forming a discontinuous contact surface over which elongate fiber reinforcement material is arranged to pass.
1. A lay-up head for applying elongate fiber reinforcement material to an application surface, the lay-up head comprising:
a guide eyelet configured to receive elongate fiber reinforcement material and further pass through the elongate fiber reinforcement material into the lay-up head, the guide eyelet comprising:
an eyelet rim forming a discontinuous contact surface over which the elongate fiber reinforcement material is arranged to pass.
2. The lay-up head according to claim 1 , wherein the guide eyelet defines a substantially circular opening.
3. The lay-up head according to claim 1 , wherein the eyelet rim comprises a plurality of projections, each having a terminal end, wherein the terminal ends comprise the discontinuous contact surface.
4. The lay-up head according to claim 1 , wherein the eyelet rim comprises a plurality of ridges, each having a terminal end, wherein the terminal ends comprise the discontinuous contact surface.
5. The lay-up head according to claim 1 , wherein the eyelet rim comprises a plurality of annular ridges, each having a terminal end, wherein the terminal ends comprise the discontinuous contact surface.
6. The lay-up head according to claim 5 , wherein the annular ridges are spaced apart from and substantially concentric with one another.
7. The lay-up head according to claim 1 , wherein the eyelet rim has a curved section.
8. The lay-up head according to claim 7 , wherein the discontinuous contact surface is formed over the curved section.
9. The lay-up head according to claim 8 , wherein a plurality of projections or ridges are distributed over the curved section.
10. The lay-up head according to claim 7 , wherein an arc length of the curved section is greater than 90° or greater than 135°.
11. The lay-up head according to claim 1 , wherein the lay-up head is arranged for rotation about a first axis substantially parallel to a longitudinal axis of the lay-up head, and a second axis substantially orthogonal to the first axis.
12. The lay-up head according to claim 11 , wherein an eyelet axis of the guide eyelet lies in a plane parallel to the first axis.
13. The lay-up head according to claim 1 , wherein the guide eyelet is provided at a first end of the lay-up head, and wherein a second opposing end of the lay-up head has a tip region.
14. The lay-up head according to claim 1 , wherein the lay-up head comprises a cutting mechanism for severing the elongate fiber reinforcement material.
15. The lay-up head according to claim 1 , wherein the lay-up head further comprises a roller configured to press elongate fiber composite material against the application surface.
16. The lay-up head according to claim 1 , wherein the lay-up head comprises a plurality of guide eyelets.
17. A fiber reinforcement lay-up apparatus, comprising:
a dispenser configured to retain a reel of elongate fiber reinforcement material; and
a lay-up head rotatable with respect to the dispenser, the lay-up head comprising:
a guide eyelet configured to receive elongate fiber reinforcement material and further pass through the elongate fiber reinforcement material into the lay-up head, the guide eyelet comprising:
an eyelet rim forming a discontinuous contact surface over which the elongate fiber reinforcement material is arranged to pass.
18. The fiber apparatus lay-up apparatus according to claim 17 , further comprising a robot comprising a robotic arm with the lay-up head configured to be attached to an end of the robotic arm.
19. The fiber reinforcement lay-up apparatus according to claim 18 , wherein the robot is a multiple axis robot having a fixed base and a rotatable hub coupled to the base such that it can rotate about a vertical axis, wherein the robotic arm extends from the rotatable hub, and wherein the dispenser is fixed to the rotatable hub.