Method of producing a multi-element assembly
AssigneeSouthwire Company
InventorsStephen L. Spruell, Wilber F. Powers, Scott Robertson
Life of this patent
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Abstract
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.
Claims17
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.
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.
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.
Dependencies are inferred from the claim text.