US3292356A - Apparatus for the manufacture of transposed multiple strip conductor - Google Patents

Apparatus for the manufacture of transposed multiple strip conductor Download PDF

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Publication number
US3292356A
US3292356A US327968A US32796863A US3292356A US 3292356 A US3292356 A US 3292356A US 327968 A US327968 A US 327968A US 32796863 A US32796863 A US 32796863A US 3292356 A US3292356 A US 3292356A
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United States
Prior art keywords
strip
bobbin
guide
axis
section
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Expired - Lifetime
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US327968A
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English (en)
Inventor
Hinds Ronald
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Balfour Beatty PLC
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BICC PLC
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Publication date
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H01B13/0278—Stranding machines comprising a transposing mechanism
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/02—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position
    • D07B3/06—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position and are spaced radially from the axis of the machine, i.e. basket or planetary-type stranding machine

Definitions

  • This invention relates to stranding machines for the manufacture of a known type of transposed multiple strip conductor of substantially rectangular cross-section, that is to say to the manufacture of conductors built up of a plurality of wires of rectangular or approximately rectangular cross-section grouped together to form a composite conductor of substantially rectangular form in which each component wire of the group, or, in the case of a conductor comprising a core wire or group of wires and an outer group of wires, of at least the outer group, changes step by step along the length of the conductor so that each wire occupies every position in its group in turn.
  • transposed multiple strip conductor usually involves the use of a stranding machine in which the bobbins carrying the supplies of wire are mounted in a revolving cage or on a revolving disc or otherwise caused to move in a circular orbit round the axis of a forming or closing die into which the wires are led and from which they are drawn off by a capstan or other suitable form of haul-off device.
  • a positioning head for ensuring that this takes place comprises a rotor adapted to be mounted on the front end of and driven by the shaft of the cage or equivalent device on or in which are mounted the supply bobbins carrying the non-circular wire.
  • the rotor has a peripheral flange provided with a number of bores whose axes lie in planes containing the axis of the head but are inclined to it.
  • These bores which are preferably hushed and uniformly distributed around the circumference of the flange, each house a tube which is rotatable in the bore and carries a die of a size and shape conforming with the cross-sectional size and shape of the wire to be positioned.
  • each die-supporting tube is driven in rotation about its axis at the same angular speed as, but in the opposite sense to, the head itself.
  • these guiding means are arranged in the path of the strips between the bobbins and the transposing device and each comprise a guide having for the passage of a single strip a throated aperture of which the throat is of rectangular cross-section and has a width such as to allow free passage of the strip and a length at least several times that of the width of the strip, and means for rotating this die about an axis coincident with or substantially parallel with its own axis at the same angular speed as but in the reverse direction to the angular speed of the bobbin planeting device, so as to maintain the major transverse axis of each die aperture substantially parallel with the bobbin axis and hence with the major transverse axis of the cross-section of the strip as it passes through the transposing device.
  • the transposing device may simply be a transposing head or may be a transposing head associated with a device, such as a positioning head, which positively guides the strips towards the transposing head.
  • the angular change in direction of travel of the strip at the guiding means is very considerably reduced at the time when bending is mainly in the plane of the major axis of the cross-section of the strip, i.e. in the 3:00 oclock and 9:00 oclock positions of the strip in the case Where that major transverse axis is horizontal, the reduction being due to freedom of the strip to move from one end of the transversely elongated guide aperture to the other as the die orbits from the 3:00 oclock to the 9:00 oclock position and vice versa and/or as the point at which the strip leaves its supply bobbin changes from one end of the bobbin to the other.
  • waviness in the strip is substantially reduced or even eliminated.
  • each bobbin cradle is supported at its front as well as at its rear end by front and rear trunnions turning in hearings in front and rear rotary discs.
  • the front trunnion must be of much larger diameter than normal to accommodate the rectangular guiding die or to allow the strip room to move from side to side in such a die mounted on the front end of the trunnion.
  • the ratio between the width of strip and the length of the rectangular throat of the guide is preferably such that at the maximum angular change of direction (which will occur when the bobbin from which a given strip is being drawn off is in the 3:00 oclock or 6:00 oclock position and the strip is leaving that end of its bobbin that at that moment lies nearest the axis of planetation) the inner end of the guide aperture is such that the strip just clears the rim of the inner flange of its bobbin.
  • the aperture is of a maximum length consistent with its preventing the strip from coming into contact with the bobbin flanges.
  • FIGURE 1 is an end elevation of part of the bobbin planetin'g device
  • FIGURE 2 is a section on lines -IIII of FIGURE 1,
  • FIGURE 3 is a plan of a bobbin carrier
  • FIGURE 4 is a side elevation of the strip stranding machine.
  • the bobbin planeting device comprises a hollow back plate 1 and a plurality of bobbin cradles 2 each comprising a supporting shaft 3 rotatably supported in a bearing 4 in the back plate and carrying at its front end, which overhangs the bearing, a U-shape-d bracket 5 in the limbs of which are bearings 6 and 7 for the ends of a bobbin-supporting spindle 8.
  • the two limbs carry arms 9 and 10 which extend, forwardly of the bobbin 11, to carry at their extremities a strip guide 12 of rectangular cross-section.
  • the back plate 1 is mounted on a hollow shaft 16 supported in bearings 17.
  • the guide 12 is formed from two lengths 18 and 19 of strip steel of D-section maintained in spaced parallel relationship with their convex surfaces facing one another, by welding their ends to end blocks 20 and 21 whose faces forming the end walls of the guide aperture are rounded olf in the same way as the top and bottom walls of the guide.
  • the length of the rectangular throat of the guide is less than the width between the internal faces of flanges 22 of the bobbin 11 mounted in the carrier.
  • the guide is mounted by screwing the ends of the arms 9 and 10 to the end blocks 20 and 21 of the guide, the arms converging as their extremities are approached to meet these end blocks.
  • FIG- URE 2 shows as dotted lines 24 the paths taken by the strips 23 when the bobbins are full.
  • FIGURE 4 shows the paths of three strips 23 from full bobbins 11, through a positioning head'25 to a transposing head 26, both of which heads are driven by an electric motor 27 which also drives the back plate 1 through shafts 28 and 29 and a belt drive 30.
  • the back plate 1 rotates in an anti-clockwise direction, as seen in FIGURE 1, and in general the strip 23 will move in an anti-clockwise direction around the boundary of the throat of each guide 12.
  • the strip will generally lie against the middle of the lower boundary of the throat of the guide and as the die moves to the 9:00 oclock position the strip will move towards the right hand boundary and then rise up this boundary to the upper boundary of the throat.
  • the strip will move to the middle of the upper boundary'and as the guide moves from the 6:00 oclock position towards the 3:00 oclock position the strip will move to the left hand end of the upper boundary.
  • the strip will move to the lower boundary of the throat and as the guide moves towards the 12:00 oclock position the strip will move along the lower boundary reaching the centre of this boundary again in the 12:00 oclock position.
  • Each guide is made with an aperture of the maximum possible length in order that the strip can adopt as natural. a path as possible between the bobbin and the transposing head (or positioning head if used).
  • the width of the guide aperture is not of such importance since the upper. j and lower boundaries do not play a major part'ln the,
  • the preferred width of the aperture is such that, except when the strip is moving from the lower boundary towards the upper boundary or vice versa, it bears against one of these boundaries.
  • the maximum length of the rectangular throat of each guide will depend not only upon the width between flanges of its associated bobbin but also upon radius at which the bobbin cradle planets about the machine axis and also upon the distance between the guide and the axis of the bobbin when mounted in its cradle.
  • the bobbin has a flange to flange width of 11" and the throat of the guide is 20" from the axis of the bobbin when mounted in its cradle, an appropriate length for the rectangular throat of the guide is 8".
  • An appropriate width of the aperture to receive 6" thick strip is '1 /2".
  • guides having the same size of aperture may be used, in which case the bending of the strip when in the 9:00 oclock. and 3:00 oclock positions will be less because of the reduced angle of approach of the strip towards the closing
  • Appropriate sizes of aperture for other sizes and placings of bobbins may readily be calculated by the. designer, bearing in mind that the maximum length of die.
  • a stranding machine for the manufacture of transposed multiple strip conductor of substantially rectangular cross-section comprising a transposing device and a bobbin planeting device for supporting a plurality of bobbins of strip, a plurality of guiding means, one for guiding 63.6111
  • each comprising a guide having a throated aperture, of which the throat is of rectangular cross-section and has a width such as to allow free passage of the strip and a length at least several times that of the width of the strip, and means for moving this guide with the bobbin about the machine axis while maintaining major transverse axis of its aperture substantially parallel with the bobbin axis and hence with the major transverse axis of the cross-section of the strip as it passes through the transposing device.
  • each guide is formed from two parallel members having convex facing surfaces and two end members having convex facing surfaces.
  • transposed multiple strip conductor of substantially rectangular cross-section comprising a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head, a transposing head,
  • a guide having a throated aperture, of which the throat is of rectangular cross-section and has a width such as to allow free passage of the strip and a length at least several times that of the width of the strip, and
  • each guide is formed from two parallel members having convex facing surfaces and two end members having convex facing surfaces.
  • a stranding machine for the manufacture of transposed multiple strip conductor of substantially rectangular cross-section comprising a transposing device and a bobbin planeting device of the back plate type for supporting a plurality of bobbins, a plurality of guiding means, one for guiding each strip in its path between one of the bobbins and the transposing device, each comprising a guide having a throated aperture of which the throat is of rectangular cross-section and has a width such as to allow free passage of the strip and a maximum length consistent with its preventing the strip from coming into contact with the bobbin flanges, and means for moving this guide with the bobbin about the machine axis while maintaining the major transverse axis of its aperture substantially parallel with the bobbin axis and hence with the major transverse axis of the crosssection of the strip as it passes through the transposing device.
  • each guide is formed from two parallel members having convex facing surfaces and two end members having convex facing surfaces.
  • a stranding machine for the manufacture of transposed multiple strip conductor of substantially rectangular cross-section comprising a transposing device and a bobbin planeting device of the back plate type provided with a plurality of cradles each for supporting a bobbin of tape, a plurality of guiding means, one for guiding each strip in its path between one of the bobbins and the transposing device, each comprising a guide having a throated aperture of which the threat is of rectangular cross-section and has a width such as to allow free passage of the strip and a length at least several times that of the width of the strip, so mounted on the bobbin cradle as to rotate with the cradle about the machine axis with the major transverse axis of the guide aperture substantially parallel with the bobbin axis and hence with the major transverse axis of the cross-section of the strip as .it passes through the transposing device.
  • each guide is formed from two parallel members having convex facing surfaces and two end members having convex facing surfaces.
  • a stranding machine as claimedin claim 7, comprising a pair of arms between which each guide is mounted projecting from each bobbin cradle, one on each side of the bobbin and substantially in the plane of the bobbin axis.
  • each guide is formed from two parallel rods having convex facing surfaces supported between two end blocks having convex facing surfaces and themselves supported by said arms.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wire Processing (AREA)
  • Ropes Or Cables (AREA)
US327968A 1962-12-07 1963-12-04 Apparatus for the manufacture of transposed multiple strip conductor Expired - Lifetime US3292356A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46272/62A GB989754A (en) 1962-12-07 1962-12-07 Improvements in or relating to apparatus for the manufacture of transposed multiple strip conductor

Publications (1)

Publication Number Publication Date
US3292356A true US3292356A (en) 1966-12-20

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US327968A Expired - Lifetime US3292356A (en) 1962-12-07 1963-12-04 Apparatus for the manufacture of transposed multiple strip conductor

Country Status (7)

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US (1) US3292356A (de)
BE (1) BE640932A (de)
CH (1) CH417718A (de)
DE (1) DE1440864A1 (de)
GB (1) GB989754A (de)
NL (1) NL301502A (de)
SE (1) SE307610B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381460A (en) * 1966-11-14 1968-05-07 Kimberly Clark Co Method and apparatus for producing twisted paper yarn
US3429115A (en) * 1967-10-12 1969-02-25 Bridge & Co Ltd David Machine for making cables or ropes
US3527042A (en) * 1969-03-06 1970-09-08 Us Navy Wire twisting apparatus
US3651629A (en) * 1970-04-01 1972-03-28 George R Webster Cable forming machine
US4112660A (en) * 1976-09-03 1978-09-12 Industrie Pirelli Societa Per Azioni Apparatus for laying-up together a plurality of fragile filaments
US4519197A (en) * 1983-03-24 1985-05-28 Societa Cavi Pirelli S.P.A. Method and apparatus for laying-up cores of a multi-core electric cable
CN113345650A (zh) * 2021-06-02 2021-09-03 合肥神马科技集团有限公司 一种复合摇篮式成缆机线盘架结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319412A (en) * 1965-06-14 1967-05-16 Central Transformer Corp Conductor transposing apparatus
DE3923310C1 (de) * 1989-07-14 1990-11-29 Lackdraht Union Gmbh, 2838 Sulingen, De

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US288677A (en) * 1883-11-20 Thomas s
US2105338A (en) * 1927-08-03 1938-01-11 Roeblings John A Sons Co Rope making machine
US2234996A (en) * 1939-08-31 1941-03-18 Gen Electric Cable-making machine
US2249509A (en) * 1939-08-31 1941-07-15 Gen Electric Rectangular cable and method of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US288677A (en) * 1883-11-20 Thomas s
US2105338A (en) * 1927-08-03 1938-01-11 Roeblings John A Sons Co Rope making machine
US2234996A (en) * 1939-08-31 1941-03-18 Gen Electric Cable-making machine
US2249509A (en) * 1939-08-31 1941-07-15 Gen Electric Rectangular cable and method of making the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381460A (en) * 1966-11-14 1968-05-07 Kimberly Clark Co Method and apparatus for producing twisted paper yarn
US3429115A (en) * 1967-10-12 1969-02-25 Bridge & Co Ltd David Machine for making cables or ropes
US3527042A (en) * 1969-03-06 1970-09-08 Us Navy Wire twisting apparatus
US3651629A (en) * 1970-04-01 1972-03-28 George R Webster Cable forming machine
US4112660A (en) * 1976-09-03 1978-09-12 Industrie Pirelli Societa Per Azioni Apparatus for laying-up together a plurality of fragile filaments
US4519197A (en) * 1983-03-24 1985-05-28 Societa Cavi Pirelli S.P.A. Method and apparatus for laying-up cores of a multi-core electric cable
CN113345650A (zh) * 2021-06-02 2021-09-03 合肥神马科技集团有限公司 一种复合摇篮式成缆机线盘架结构

Also Published As

Publication number Publication date
CH417718A (de) 1966-07-31
DE1440864A1 (de) 1969-02-06
GB989754A (en) 1965-04-22
SE307610B (de) 1969-01-13
NL301502A (de)
BE640932A (de) 1964-04-01

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