Systems and methods for creating topographical woven fabric
Provided are systems and methods for producing seamless woven materials that are variable in each of their 3 dimensions. The systems and methods generally operate by altering heddle positions independently to impart three dimensional structure to a woven fabric. Weft yarn is woven into a set of warp yarns that have been individually raised or lowered along a particular cross section, essentially locking the weave into an intended 3 dimensional form.
1. An actuator system configured to be used in combination with a loom, comprising:
a. a plurality of motors;
b. a plurality of heddles forming a heddle plane;
c. at least one electronic controller for controlling motion of the plurality of motors to individually effect changes in position of the one or more of the heddles, the at least one electronic controller being configured to output an electrical signal to one motor of the plurality of motors; and
d. a plurality of couplings coupled to the plurality of motors, wherein the plurality of couplings are arranged in a configuration that allows the at least one electronic controller to be configured to individually control one or more of the plurality of heddles of the loom continuously between a plurality of positions located along a longitudinal axis in the heddle plane of the loom to individually raise and lower a warp string, the plurality of positions of successive heddles of the plurality of heddles collectively defining a curved, curvilinear, or non-linear profile of warp strings along the heddle plane, wherein a curvature defined by the curved, curvilinear, or non-linear profile of warp strings is imparted into a final woven product profile when a weft string is passed between the warp strings, each of the one or more heddles being configured to engage at least one of the warp strings.
2. The system of claim 1 , wherein each motor is mechanically coupled to one coupling.
3. The system of claim 1 , wherein each motor is coupled to one heddle of the one or more heddles.
4. The system of claim 1 , wherein each coupling reduces an angular velocity imparted to one or more coupled motors, the angular velocity associated with one or more torques due to gravitational force or a spring force imparted on one or more heddles.
5. The system of claim 1 , wherein each coupling comprises a gear reduction component and a pulley system.
6. The system of claim 5 , wherein the pulley system is threaded or non-threaded.
7. The system of claim 5 , wherein the gear reduction component is disposed between a motor and the pulley component.
8. The system of claim 5 , wherein the gear reduction component comprises at least two gears of different pitch diameters or different numbers of teeth.
9. The system of claim 5 , wherein the gear reduction component reduces a torque-induced turning of a motor.
10. The system of claim 5 , wherein the gear reduction component comprises a 10:1, 20:1, 50:1, or 100:1 gear reduction ratio.
11. The system of claim 1 , wherein the couplings allow the motors to be actuated in a controlled manner during an operation of the heddles.
12. The system of claim 1 , wherein the configuration of the plurality of couplings enables power consumption to be reduced by obviating a need to provide a continuous torque to the one or more heddles during one or more passes of a weft thread across the loom.
13. The system of claim 1 , wherein each motor is selected from the group consisting of: brushed direct current (DC) motors, brushless DC motors, servo motors, and stepper motors.
14. The system of claim 13 , wherein each motor is configured to move each heddle along one or more axes of the heddle plane of the loom.
15. The system of claim 1 , consisting of
only one warp shed:
wherein the at least one electronic controller is further configured to output electrical signals to the plurality of motors for controlling motion of the motors to effect changes in position of the one or more of the heddles to pass a weft string into the only one warp shed to form a single layer fabric and thereby impart the curvature to the final woven product profile formed from the single layer fabric.
16. The system of claim 1 , wherein the plurality of positions comprises two or more discrete positions along the longitudinal axis of the heddle plane.
17. The system of claim 1 , wherein the plurality of positions comprises at least three discrete positions along the longitudinal axis of the heddle plane.
18. The system of claim 16 , wherein a distance between two adjacently spaced discrete positions is at least about 0.01 mm, 0.02 mm, 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, 1 mm, 2 mm, 5 mm, or 10 mm.
19. The system of claim 16 , wherein a distance between two adjacently spaced discrete positions ranges from about 0.01 mm to about 10 mm.
20. The system of claim 1 , further comprising a plurality of warp tensioners applying tension along a longitudinal axis of the warp strings, perpendicular to the heddle plane, wherein each of the one or more of the warp strings is coupled to and individually controlled by a respective one of the plurality of warp tensioners.
21. The system of claim 20 , wherein each of the plurality of warp tensioners is configured to control a respective warp string individually and continuously.
22. The system of claim 15 , wherein the at least one electronic controller is further configured to effect changes in position of the one or more of the heddles to continuously change the curvature of the final woven product profile formed from the single layer fabric.