Braiding machine and methods of use
Systems and methods for forming a tubular braid are disclosed herein. A braiding system configured in accordance with embodiments of the present technology can include, for example, an upper drive unit, a lower drive unit, a mandrel coaxial with the upper and lower drive units, and a plurality of tubes extending between the upper drive unit and the lower drive unit. Each tube can be configured to receive individual filaments for forming the tubular braid, and the upper drive unit and the lower drive unit can act against the tubes in synchronization to cross the filaments over and under one another to form the tubular braid on the mandrel.
1. A braiding system, comprising:
a plurality of elongate members each configured to receive a corresponding one of a plurality of filaments;
a plate assembly including a plurality of slots positioned circumferentially about a longitudinal axis, wherein each of the slots is configured to receive a corresponding one of the elongate members;
a cam extending circumferentially about the longitudinal axis; and
a drive mechanism configured to rotate the cam about the longitudinal axis to drive at least a set of the elongate members radially through the slots relative to the longitudinal axis.
2. The braiding system of claim 1 wherein the cam has an inner surface and an outer surface, wherein the outer surface is farther from the longitudinal axis than the inner surface, and wherein the inner surface has a periodic shape.
3. The braiding system of claim 1 wherein the cam has an inner surface and an outer surface, wherein the outer surface is farther from the longitudinal axis than the inner surface, and wherein the outer surface has a periodic shape.
4. The braiding system of claim 1 , further comprising a plurality of drive members, wherein individual ones of the drive members are aligned with corresponding ones of the slots, wherein the cam is configured to contact the drive members, and wherein the drive mechanism is configured to rotate the cam to move the drive members to drive the at least set of the elongate members radially through the slots relative to the longitudinal axis.
5. The braiding system of claim 4 wherein the drive mechanism is configured to rotate the cam to a first position to move a first set of the drive members radially in a first direction relative to the longitudinal axis while permitting a second set of the drive members to move radially in a second direction relative to the longitudinal axis, and wherein the first direction is opposite to the second direction.
6. The braiding system of claim 5 wherein the drive mechanism is configured to rotate the cam from the first position to a second position to move the second set of the drive members radially in the first direction relative to the longitudinal axis while permitting the first set of the drive members to move radially in the second direction relative to the longitudinal axis.
7. The braiding system of claim 6 wherein the first and second sets of the drive members include a same number of drive members.
8. The braiding system of claim 1 wherein the cam is a first cam, wherein the drive mechanism is configured to rotate the first cam about the longitudinal axis to drive the at least set of the elongate members radially inward through the slots toward the longitudinal axis, and further comprising a second cam extending circumferentially about the longitudinal axis, wherein the drive mechanism is configured to rotate the second cam about the longitudinal axis to drive the at least set of the elongate members radially outward through the slots away from the longitudinal axis.
9. The braiding system of claim 1 , further comprising a plurality of weights configured to be secured to corresponding ones of the filaments to tension the filaments.
10. The braiding system of claim 9 wherein the filaments and the weights are configured to move within the elongate members.
11. The braiding system of claim 9 wherein the elongate members are hollow tubes.
12. The braiding system of claim 1 , further comprising a mandrel positioned along the longitudinal axis.
13. The braiding system of claim 1 wherein the plate assembly is at least partially rotatable to rotate the slots about the longitudinal axis.
14. A braiding system, comprising:
a plurality of elongate members each having an upper portion and a lower portion, wherein individual ones of the elongate members are configured to receive individual filaments;
an upper drive unit including (a) a first upper cam configured to act against the upper portions of the elongate members to drive the upper portions of the elongate members radially inward toward a longitudinal axis and (b) a second upper cam configured to act against the upper portions of the elongate members to drive the upper portions of the elongate members radially outward away from the longitudinal axis; and
a lower drive unit coaxially aligned with the upper drive unit along the longitudinal axis, wherein the upper drive unit includes (a) a first lower cam configured to operate in synchrony with the first upper cam and act against the lower portions of the elongate members to drive the lower portions of the elongate members radially inward toward the longitudinal axis as the first upper cam drives the upper portions of the elongate members radially inward and (b) a second lower cam configured to operate in synchrony with the second upper cam and act against the lower portions of the elongate members to drive the lower portions of the elongate members radially outward away from the longitudinal axis as the second upper cam drives the upper portions of the elongate members radially outward.
15. The braiding system of claim 14 wherein the upper drive unit constrains the upper portions of the elongate members, and wherein the lower drive unit constrains the lower portions of the elongate members.
16. The braiding system of claim 14 wherein the upper and lower drive units are further configured to move the elongate members along an arcuate path with respect to the longitudinal axis.
17. The braiding system of claim 14 wherein the upper and lower drive units are substantially identical.
18. The braiding system of claim 14 wherein the first upper cam is mechanically synchronized to move together with the first lower cam.
19. The braiding system of claim 18 wherein the second upper cam is mechanically synchronized to move together with the second lower cam.
20. The braiding system of claim 14 wherein—
the upper drive unit includes (a) an outer assembly having outer slots and (b) an inner assembly having inner slots;
the lower drive unit includes (a) an outer assembly having outer slots and (b) an inner assembly having inner slots; and
individual ones of the elongate members are constrained within individual ones of the inner and/or outer slots of the upper and lower drive units.