WO1987000962A1 - Methode et appareil pour la fabrication de conducteurs compacts dans des machines a torsader - Google Patents

Methode et appareil pour la fabrication de conducteurs compacts dans des machines a torsader Download PDF

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Publication number
WO1987000962A1
WO1987000962A1 PCT/US1985/001508 US8501508W WO8700962A1 WO 1987000962 A1 WO1987000962 A1 WO 1987000962A1 US 8501508 W US8501508 W US 8501508W WO 8700962 A1 WO8700962 A1 WO 8700962A1
Authority
WO
WIPO (PCT)
Prior art keywords
wires
preshaped
compact
shaping
conductors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1985/001508
Other languages
English (en)
Inventor
Andre Varga-Papp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Syncro Machine Co
Original Assignee
Syncro Machine Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Syncro Machine Co filed Critical Syncro Machine Co
Priority to PCT/US1985/001508 priority Critical patent/WO1987000962A1/fr
Priority to JP60503510A priority patent/JPH0750575B2/ja
Priority to AU47283/85A priority patent/AU589573B2/en
Publication of WO1987000962A1 publication Critical patent/WO1987000962A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01B13/0221—Stranding-up by a twisting take-up device
    • 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
    • H01B13/0285—Pretreatment
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/08—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core the layers of which are formed of profiled interlocking wires, i.e. the strands forming concentric layers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/20—Type of machine
    • D07B2207/204—Double twist winding
    • D07B2207/205—Double twist winding comprising flyer
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2301/00—Controls
    • D07B2301/35—System output signals
    • D07B2301/3533—Amount of material
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/40—Application field related to rope or cable making machines
    • D07B2501/406—Application field related to rope or cable making machines for making electrically conductive cables

Definitions

  • the invention relates to wire machinery and more specifically, to an apparatus for manufacturing compact conductors on single or double twist bunchers, twisters or stranders.
  • the wires are grouped or bunched together at a closing point prior to entry into the machine.
  • the closing point is fixed relative to thej main part of the machine.
  • the bunched wires or strands are then introduced into one end of a bow which rotates about the longitudinal axis of the machine.
  • Double twist bunchers and closers have been extensively used in the electrical wire and cable, steel tire cord and steel rope industries for many years.
  • Machines for twisting a plurality of wires with the single twist system comprise a rotatable flyer and a reciprocally traversing reel rotatably supported within the flyer. A speed differential exists between the rotation of the flyer and the reel.
  • the above machines are normally used to manufacture uncompacted stranded or bunched conductors where the round cross-section of each individual wire is maintained in the final stranded or bunched conductor thereby introducing spaces or interstices between adjacent strands.
  • techniques have been developed to reduce the empty spaces in a stranded conductor by pulling a conventionally stranded cable through compacting dies or roller dies. By doing this, each round wire is randomly deformed and compressed against the others resulting in a smaller overall cross-section with the same ampacity rating as the larger non-compacted conductor. This is important, especially when such a stranded cable is subsequently insulated since the amount of insulating material necessary can be substantially reduced and therefore the cost of the overall finished cable is lowered.
  • Tubular stranders and rigid stranders are expensive machines and attempts have been made to manufacture compact conductors with single twist and double twist equipment or bunchers. These latter machines are most productive since for simiJLar products they can impart a higher number of twists per minute.
  • all the compacting must take place in the cradle " just before the takeup reel. Therefore, prior art double twist machines have to be run at reduced speeds when producing compact conductors of acceptable quality.
  • the state-of-the-art equipment does not produce a compact conductor comparable with those that can be manufactured with more expensive and slower machines such as tubular and rigid stranders where the compaction process can take place outside of the rotating body of the machine and therefore power and/or space factors are of little or no importance.
  • Another object of the present invention is to facilitate the production of compact conductors using less energy than needed by prior art methods and apparatus.
  • a further object of the present invention is to provide a method and apparatus to produce compact conductors which will significantly reduce the amount of waste or scrap.
  • Another important object of this invention is to facilitate the manufacture of compact conductors made of soft metals and alloys having low tensile strength the surface of which is readily damaged.
  • conductors of very soft aluminum alloys may become in high demand because of their greater flexibility and malleability, such conductors cannot be effectively produced with the required precision and by prior art quality methods or apparatus.
  • apparatus for making twisted compact conductors in accordance with the invention comprises means for providing a plurality of complementary preshaped wires each having the desired cross-sectional profiled configuration in the final compact conductor and each defining lateral surfaces.
  • Means is provided for metering the preshaped wires, and means is provided for positioning and orienting the preshaped wires with relation to each other to substantially correspond to the positions and orientations therebetween in the final twisted compact conductor.
  • Means is provided for imparting at least one twist to the wires to cause.
  • a core wire strand or assembly may be introduced prior to the twisting or compaction step, in which case the preshaped wires are advantageously provided with an inner surface which corresponds to the shape of the core wire, whereby twisting of the wires also causes the inner curved surfaces to.ma.te with and abut against the core wire.
  • a method is also described for making twisted compact conductors by using, for example, the above apparatus in accordance with the invention.
  • the wires forming the conductors to be utilized are guided through shaping rolls which impart to each wire substantially the same shape and cross-section that each wire will have after the complete twisting process has been completed.
  • the wires are then fed through a lay plate or an arrangement of lay plates which directs and orients all the wires to the approximate positions of the wires in the final conductor.
  • FIG. 1 is a schematic representation, in side elevation, of an apparatus for making compact conductors in accordance with the present invention
  • FIG. 2 is an enlarged view of the shaping rollers used in the embodiment shown in FIG. 1;
  • FIG. 3 is an enlarged view of the lay plate used in the embodiment of FIG. 1;
  • FIG. 4 is a cross-sectional view of the compact conductor made with the embodiment shown in FIG. 1, showing the manner in which the preshaped wires are arranged about the core wire, and also showing enlarged cross-section of one of the preshaped wires;
  • FIG. 5 is a side elevational view, in schematic, of an alternate embodiment for the wire shaper shown in FIG. 1.
  • an apparatus for making twisted compact conductors is generally designated by the reference numeral 10.
  • the apparatus 10 includes a source 12 of core and preshaped wires C and W, respectively.
  • the preshaped wires W are, in the presently preferred embodiment, formed during and as part of the manufacture of the compact conductors, to be further described below.
  • the source 12 of the wires in FIG. 1- includes a payoff section 14 and a wire shaper 16.
  • the payoff section 14 includes a number of bobbins 18 which are initially filled with wire W. Normally, the wire W would have a circular cross-section. However, this is not a critical feature of the invention and any appropriate wire cross-section can be used, with different degrees of advantage.
  • a core wire C is shown, it will be clear to those skilled in the art that a core wire is not essential and the apparatus and method of the invention can be practiced without a single or multi-strand core wire.
  • the payoff section 14 in FIG. 1 has seven bobbins 18, the number that will be used in making a conventional stranded cable having -a core and six outside wires stranded about the core wire.
  • each bobbin 18 cooperates with a tensioning device 19 which adjusts t.he tension of the wires W during the stranding process.
  • the type of tensioning device is not critical and may be of the type described in U.S. patent No. 4,423,588 assigned to the assignee of the present application.
  • the payoff section includes a pulley rack 20 carrying pulleys 22, 24 associated with each of the bobbins 18 to allow the direction of the wires W to be modified and directed toward a roller 26 which, in turn, redirects all wires W towards the stranding machines as to be described.
  • the wire shaper 16 includes at least one pair of forming rollers 30.
  • the rollers are shown to include an upper and lower rollers 30a and 30b.
  • Each of the rollers 30a and 30b are provided with a generally semi-circular groove 30c which, when the rollers are arranged as shown, provide a generally circular opening through which the center or core wire C can pass without modification.
  • Each of the rollers is also provided with a series of grooves spaced from each other about the respective axes of rotation.
  • ech roller 30a, 30b is provided with 3 grooves having generally .'V' shaped profiles 30d and generally shallow arculate profiles 30e.
  • Each shallow groove 30e on one of the rollers is arranged in the same plane with a 'V' shaped groove 30d in the other of the rollers to define forming areas generally having the shape of the arcuate sectors. It will also be noted that the cooperating 'V' shaped grooves 30d in roller 30a with the shallow grooves 30e in roller 30b form upwardly oriented sector areas as viewed in FIG. 2. Downwardly sectored areas are defined by the cooperating shallow grooves 30e in the roller 30a with the *v' shaped grooves 30d in roller 30b.
  • the shapes of the sectored areas defined by the associated grooves on each of the rollers 30a, 30b is selected to correspond to the desired cross-sectional profiled complementary configurations of the outside wires in the final compacted product. To change the profiles for any desired compacted product it is only necessary to change the rollers and provide the appropriate grooves as will be readily evident to those skilled in the art.
  • a feature of the present invention is a provision of means for positioning and orienting the preshaped wires W' and W" with relation to each other and/or to the core wire C to substantially correspond to the positions and orientations that these wires assume in the final twisted compact conductor.
  • the device for positioning and orienting the wires is designated by the reference 34 and includes a lay plate 36 and a closing die 38.
  • a lay plate 36 that can be used is shown in FIG. 3 and includes a central circular opening 36a and a series of 6 generally radially directed openings 36b each designed and configurated to accommodate a pulley 52.
  • the pulleys are mounted about their respective axes for rotation, and are provided with grooves which generally correspond to the grooves 30d in the forming rollers 30a and 30b.
  • the generally upwardly directed sectors W* are directed to the three lower pulleys 52 while the downwardly directed sectors W" are directed to the three upper pulleys 52 to avoid excessive twisting of the preshaped outer wires.
  • Numerals 1-6 have been indicated in FIGS. 2 and 3 to designate each of the outside wires W' and W" and how they may be arranged prior to gathering in the closing die 38.
  • the specific wires and the associated pulleys 52 need not be identical to the suggested arrangement shown, as long as the wires are not excessively twisted or otherwise damaged or deformed prior to passage through the lay plate 36.
  • the twisting device 40 is a double, twist bow strander, including a bow assembly 42, a cradle 44, a reel 46 mounted in the cradle and a traverse mechanism 48.
  • An inside or pulling capstan is advantageously and commonly provided within such machines for drawing the wires thereinto.
  • the wires are imparted a first twist.
  • the wires are imparted a second twist and this is sufficient to draw the wire C, W' and W" into abutment against each other to assume the fully closed and compact construction shown in FIG. 4, wherein the lateral surfaces W-. of adjacent wires substantially abut against the core wire C.
  • the composite wire shows no interstices between the individual wires or strands and forms a compact twisted conductor.
  • the contours of the outer surfaces W Q , formed by the shallow grooves 30e, are selected to define a generally circular outer surface of the composite conductor when the final product is wound about the reel 46.
  • One aspect of the invention is that the strands or wires are closed by twisting the same at the stationary closing die.
  • the shaping rollers 30 and the - lay plate 36 can be stationary relative to the frame of the machine 40. This simplifies the construction of the drives required for the metering of the wires to be stranded and compacted for a higher quality, more uniform product.
  • the wires C, W' and W" can be configured in the desired compacted form by-controlling the metering rate of the individual wires or strands. This is not possible, practical or economically viable where the finished stranded wire is pulled by a capstan on the outlet side of the closing die.
  • the powered rotating capstan 56 when used, is of a conventional construction and is made to rotate at a speed relative to the rotation of the twisted device 40 to impart the number of twists required by the final product lay.
  • Another modification that may be made to describe the embodiment is the use of a plurality of dies each having openings generally corresponding to the areas formed by the associated grooves 30d and 30e in FIG. 2, which dies may be used for pre-shaping the outside wires. With such an arrangement, the dies would replace the wire shaper 16. The lay plate 36 would still advantageously be used between the dies and the twisting device 40.
  • twisting devices including single and double twisters and rotary takeup devices such as telephone stranders.
  • the invention also involves a method of making compact conductors which includes the steps of pre-shaping and metering a plurality of wires in order to impart thereto desired cross-sectional profiled complementary configurations and advancing the preshaped wires together with a core wire (optional) through a twisting device and imparting at least one twist to the individual wires or strands to draw these together to compact composite twisted conductor which exhibits very little if any interstices or spaces between the strands.
  • the core wire may also be metered, although this is optional.
  • the same product can be manufactured by using bobbins 18 already provided with preshaped wires having cross-sectional configurations as shown in FIG. 4.
  • the wire shaper 16 in FIG.l can be eliminated.
  • Including a wire shaper 16, however, is preferred since any conventional wires W can be used and different sizes and configurations of the outside stranded wires can be easily achieved by simply changing the shaping rollers 30 or the dies, if these are used instead.
  • the present invention permits the manufacture of compact stranded cables made of different metals. It has been virtually impossible, particularly on double twisters, to produce compact cables having steel center cores and aluminum peripheral conductors because steel is much harder and less ductile than aluminum. Since it is not possible, to deform the center steel wire when the aluminum wires are twisted and stretched, imparting two twists to the aluminum wires would normally result in breakage of the aluminum wires due to excessive stretching during the stranding operation. With the present approach, the steel core wire is pulled through the machinery without deformation.
  • the preshaped wires made, for example, from aluminum are preshaped and metered in a quantity to assure some looseness of construction after the first twist.
  • the outside conductors can be drawn into abutment against each other, as described, without deformation of the center wire or excessive stretching of the preshaped wires. For this reason, for the first time, production of high quality compact stranded conductors with steel cores and softer metal peripheral wires or strands, in an efficient manner on, for example, double twist machines.
  • the ends of wires of bobbins which are near empty can be connected to the leading ends of full bobbins so that empty bobbins can be easily replaced without disruption or stoppage of the rotating machine"and without the incurrence of waste or scrap as is the case with tubular or rigid stranders.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ropes Or Cables (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Wire Processing (AREA)

Abstract

Appareil et méthode pour fabriquer des conducteurs câblés compacts sur des machines à torsader simples et doubles (40). Pour cela on préforme et débite (14, 16) les fils préformés (1-6) pour leur conférer des configurations (w', w'') complémentaires, avec un profil de section généralement en secteur. On place et oriente les fils préformés pour qu'ils adaptent essentiellement leurs positions et leurs orientations par rapport à l'âme (c) dans le conducteur torsadé compact final. Les fils sont débités et passés dans une machine à torsader double (40), qui est utilisée pour torsader les fils préformés (1-6) autour de l'âme (c) avec un assemblage généralement lâche. Ces fils sont ensuite bloqués les uns contre les autres lors de la deuxième opération de torsadage lors de laquelle le conducteur composite est formé.
PCT/US1985/001508 1985-08-08 1985-08-08 Methode et appareil pour la fabrication de conducteurs compacts dans des machines a torsader Ceased WO1987000962A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/US1985/001508 WO1987000962A1 (fr) 1985-08-08 1985-08-08 Methode et appareil pour la fabrication de conducteurs compacts dans des machines a torsader
JP60503510A JPH0750575B2 (ja) 1985-08-08 1985-08-08 バンチャで圧縮導線を製造する方法および装置
AU47283/85A AU589573B2 (en) 1985-08-08 1985-08-08 Method and apparatus for manufacturing compact conductors with bunchers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1985/001508 WO1987000962A1 (fr) 1985-08-08 1985-08-08 Methode et appareil pour la fabrication de conducteurs compacts dans des machines a torsader

Publications (1)

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WO1987000962A1 true WO1987000962A1 (fr) 1987-02-12

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AU (1) AU589573B2 (fr)
WO (1) WO1987000962A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003088275A1 (fr) * 2002-04-05 2003-10-23 Roteq Machinery, Inc. Appareil et procede de fabrication de cables compactes a l'aide d'une toronneuse a cage rigide
CN102154863A (zh) * 2010-12-28 2011-08-17 泰博制钢股份有限公司 钢丝绳锻打成型装置
WO2018195018A1 (fr) * 2017-04-18 2018-10-25 Bartell Machinery Systems, L.L.C. Systèmes et procédés de formation d'un câble

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US400285A (en) * 1889-03-26 Chester
US1808444A (en) * 1926-12-13 1931-06-02 Felten & Guilleaume Carlswerk Manufacture of wire cables
US2122911A (en) * 1936-06-17 1938-07-05 Callenders Cable & Const Co Stranded member formed of wire or metal strip, particularly applicable to electric conductors
US2476180A (en) * 1948-01-31 1949-07-12 American Steel & Wire Co Apparatus for making wire rope of preformed flattened strands
US3396522A (en) * 1967-01-30 1968-08-13 Albert A. Biagini Stranding machine
US4212151A (en) * 1978-10-05 1980-07-15 The Anaconda Company Manufacture of compacted strand

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532324A (en) * 1978-08-28 1980-03-07 Furukawa Electric Co Ltd Method of manufacturing multilayer smooth body steel core aluminum twisted wire
JPS569201U (fr) * 1979-07-02 1981-01-27
JPS581485A (ja) * 1981-06-29 1983-01-06 中沢　助市 はさみ
JPS58129704A (ja) * 1982-01-28 1983-08-02 古河電気工業株式会社 二度撚式圧縮導体製造装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US400285A (en) * 1889-03-26 Chester
US1808444A (en) * 1926-12-13 1931-06-02 Felten & Guilleaume Carlswerk Manufacture of wire cables
US2122911A (en) * 1936-06-17 1938-07-05 Callenders Cable & Const Co Stranded member formed of wire or metal strip, particularly applicable to electric conductors
US2476180A (en) * 1948-01-31 1949-07-12 American Steel & Wire Co Apparatus for making wire rope of preformed flattened strands
US3396522A (en) * 1967-01-30 1968-08-13 Albert A. Biagini Stranding machine
US4212151A (en) * 1978-10-05 1980-07-15 The Anaconda Company Manufacture of compacted strand

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003088275A1 (fr) * 2002-04-05 2003-10-23 Roteq Machinery, Inc. Appareil et procede de fabrication de cables compactes a l'aide d'une toronneuse a cage rigide
CN102154863A (zh) * 2010-12-28 2011-08-17 泰博制钢股份有限公司 钢丝绳锻打成型装置
WO2018195018A1 (fr) * 2017-04-18 2018-10-25 Bartell Machinery Systems, L.L.C. Systèmes et procédés de formation d'un câble
CN110537230A (zh) * 2017-04-18 2019-12-03 巴特尔机械系统有限公司 用于成型缆线的系统和方法

Also Published As

Publication number Publication date
AU589573B2 (en) 1989-10-19
JPS63501990A (ja) 1988-08-04
AU4728385A (en) 1987-03-05
JPH0750575B2 (ja) 1995-05-31

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