Method of producing a multi-element assembly
View Patent ↗A plurality of individual elements are imparted with reverse axial twist and collectively twisted into a multi-element assembly. Each individual element has an axial twist direction in an opposite direction from the axial twist direction of the collective multi-element assembly. The reverse axial torsion in the assembly tightly binds the plurality elements in the assembly to resist separation.
1. A method for producing a multi-element assembly, the method comprising imparting a reverse axial twist on each element of a plurality of elements to bind the plurality of elements together in the multi-element assembly, wherein imparting the reverse axial twist comprises;
rotating a plurality of payoffs about their respective axes to twist respective ones of the plurality of elements fed from each of the plurality of payoffs;
passing the plurality of elements through a die;
rotating a take-up about an axis perpendicular to a direction of travel of the plurality of elements slower than the plurality of payoffs; and
collecting the multi-element assembly of the plurality of elements on the take-up.
2. The method of claim 1 , wherein each of the plurality of elements comprises an insulated conductor.
3. The method of claim 1 , wherein each of the plurality of elements is selected from the group consisting of a 600V power cable, a data cable, a coaxial cable, a telephone cable, and a low voltage electrical cable.
4. The method of claim 1 , further comprising rotating the plurality of payoffs from 5% to 35% faster than the take-up.
5. The method of claim 1 , wherein each of the plurality of elements comprises at least one elastic material selected from the group consisting of rubber, polyethylene, polyvinyl chloride, chlorosulfonated polyethylene, polypropylene, fiberglass, chloropolyethylene, polychlorprene, neoprene, vinyl, and silane-crosslinked polyethylene.
6. A method for producing a multi-element assembly, the method comprising:
feeding a plurality of elements, from a respective plurality of payoffs, through a die to form the multi-element assembly, wherein feeding the plurality of elements comprises rotating each of the plurality of plurality of payoffs in a first direction at approximately a first speed to respectively twist each of the plurality of elements; and
collecting the multi-element assembly from the die on a take-up, wherein collecting the multi-element assembly comprises rotating the take-up in the first direction at approximately a second speed wherein the second speed is slower than the first speed.
7. The method of claim 6 , wherein rotating the take-up in the first direction at approximately the second speed wherein the second speed is slower than the first speed comprises rotating the take-up in the first direction at approximately the second speed wherein the first speed is 5% to 35% faster than the second speed.
8. The method of claim 6 , wherein rotating the take-up in the first direction at approximately the second speed wherein the second speed is slower than the first speed comprises rotating the take-up in the first direction at approximately the second speed wherein the first speed is 10% to 25% faster than the second speed.
9. The method of claim 6 , wherein rotating the take-up in the first direction at approximately the second speed wherein the second speed is slower than the first speed comprises rotating the take-up in the first direction at approximately the second speed wherein the first speed is 15% to 20% faster than the second speed.
10. The method of claim 6 , wherein rotating each of the plurality of plurality of payoffs comprises rotating end-over-end each of the plurality of plurality of payoffs comprising payoff reels.
11. The method of claim 6 , wherein rotating the take-up comprises rotating end-over-end the take-up comprising a take-up reel.
12. The method of claim 6 , wherein collecting the multi-element assembly comprises rotating the take-up wherein the second speed is slower than the first speed to impart a reverse axial twist on each of the plurality of elements to bind the plurality of elements together in the multi-element assembly.
13. The method of claim 6 , wherein feeding the plurality of elements comprises feeding the plurality of elements wherein each element of the plurality of elements comprises an insulated electrical conductor.
14. The method of claim 6 , wherein feeding the plurality of elements, from the respective plurality of payoffs, through the die to form the multi-element assembly comprises feeding the plurality of elements, from the respective plurality of payoffs, through the die to form the multi-element assembly comprising a 600 V UD power cable.
15. The method of claim 6 , wherein feeding the plurality of elements comprises feeding the plurality of elements wherein each the plurality of elements comprises one of the following: a 600V power cable, a data cable, a coaxial cable, a telephone cable, a low voltage electrical cable, a flexible tube, a hose, and a fiber optic cable.
16. The method of claim 6 , further comprising rotating an assembly pull-out capstan, to convey the multi-element assembly between the die and the take-up, about the assembly pull-out capstan's axis slower than the first speed.
17. A method for producing a power cable, the method comprising:
feeding a plurality of elements from a respective plurality of payoffs through a die to form the power cable, wherein feeding the plurality of elements comprises rotating each of the plurality of payoffs in a first direction at a first speed to respectively twist each of the plurality of elements wherein rotating each of the plurality of payoffs comprises rotating end-over-end each of the plurality of payoffs comprising payoff reels wherein each element of the plurality of elements comprises an insulated electrical conductor;
rotating an assembly pull-out capstan, to convey the power cable between the die and the take-up, about the assembly pull-out capstan's axis slower than the first speed; and
collecting the power cable from the die on a take-up, wherein collecting the power cable comprises rotating the take-up in the first direction at a second speed wherein the second speed is slower than the first speed wherein the first speed is 5% to 35% faster than the second speed wherein rotating the take-up comprises rotating end-over-end the take-up comprising a take-up reel, wherein the second speed is slower than the first speed to impart a reverse axial twist on each of the plurality of elements to bind the plurality of elements together in the power cable.