EP1324354A1 - Verfahren zur kontinuierlichen Herstellung eines gewellten Koaxialkabels - Google Patents

Verfahren zur kontinuierlichen Herstellung eines gewellten Koaxialkabels Download PDF

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Publication number
EP1324354A1
EP1324354A1 EP02293118A EP02293118A EP1324354A1 EP 1324354 A1 EP1324354 A1 EP 1324354A1 EP 02293118 A EP02293118 A EP 02293118A EP 02293118 A EP02293118 A EP 02293118A EP 1324354 A1 EP1324354 A1 EP 1324354A1
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EP
European Patent Office
Prior art keywords
speed
cable
annealer
conductor
station
Prior art date
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Granted
Application number
EP02293118A
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English (en)
French (fr)
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EP1324354B1 (de
Inventor
Thierry Estienne
Gérard Besnier
Jean-Claude Duc
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Acome SCOP
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Acome SCOP
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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
    • H01B13/0009—Apparatus or processes specially adapted for manufacturing conductors or cables for forming corrugations on conductors or cables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49123—Co-axial cable

Definitions

  • the present invention relates to a method of manufacture of a corrugated coaxial cable.
  • Coaxial cables are widely used today for multiple applications and in particular in signal transmissions from radio frequency. We know, for example, such cables to transmit television signals or signals cell phone of various generations.
  • a coaxial cable includes a central conductor surrounded by a dielectric and a peripheral conductor usually protected by a polymer sheath.
  • the dielectric is made of a polymer expanded and extruded
  • the peripheral conductor is in copper or aluminum.
  • the peripheral conductor is corrugated so as to provide the coaxial cable flexibility compatible with installation conditions while guaranteeing the better transmission qualities.
  • the speed of unwinding reference is the speed of the crawler to shoot on the peripheral conductor. Because of this and despite regulation of the original drum and the drum of reception, the annealing head is subjected to a force constantly varies in intensity and direction of fact continual speed variations of the drum of origin, which corresponds to a quantity of variable intermediate per unit of time, and continual speed variations of the drum receipt, which corresponds to a quantity of product variable finish per unit of time.
  • this process involves measuring or to estimate the axial force exerted on the head annealing and bring the latter permanently back to its equilibrium position by changing the speed of rotation of tools to achieve annealing.
  • This change in speed causes itself voltage changes on the whole of the line and thus drive by the game of puppets previously cited a change in input speeds and output for the drums mentioned above.
  • the peripheral conductor is brought in the anneller at a given speed which is the speed serving as a speed reference to the line of manufacturing.
  • the quantity of conductor thus brought is equal to the amount of driver consumed by the annealer, this quantity being therefore a function of the crawler reference speed and diameter of the welded conductor before entering the annealer.
  • This same amount of driver consumed is of course the parameters of the corrugation, in particular the diameter on annulus, from the bottom of the annulus and the shape of the annelure.
  • the central conductor with its dielectric it is driven by the operation annealing which is carried out in compression on the dielectric and a voltage is required to stretch this same central conductor element with its dielectric.
  • the existing processes are therefore based on a permanent regulation of a system of several parameters around an optimum operating point which can only be obtained after adjustments progressive. (Some existing processes do not include not even the operational flexibility introduced at level of lateral flutter of the annealing head and its use to regulate the speed of rotation of the head annealing). In any case, the existing processes are therefore processes capable of producing quality but at the cost of a great difficulty of control and control of the process, a little compatible vigilance with certain modern imperatives of production, and of very limited speeds. All these points have inevitably consequences even relatively low, on the optimum quality of a product such as coaxial cable whose performance is precisely in part related to a great geometric regularity of various components. It finally follows yields bad enough due to either setting or re-setting times lengthy operations, or at fairly high levels of waste due in particular to performance drifts.
  • the present invention therefore aims to to overcome these multiple disadvantages by offering a process more stable and easier to adjust while allowing to consider higher speeds of without risk of deterioration of quality, reducing waste and defects due to drift manufacturing.
  • the invention also aims to promote the setting in tandem certain operations such as the achievement of dielectric or sheathing.
  • the present invention therefore aims at a greater stability and increased productivity in order to offer the possibility to increase speeds.
  • the invention is based on the principle of operating the annealer at a constant speed.
  • the operating speed of the annealer is chosen as a reference speed for adjusting the speed of at least one of the drive elements of the device used to displace the cable or a part of it during the manufacturing.
  • a continuous manufacturing process of a coaxial cable in which rings are formed on a cable conductor in an annealer and the annealer is operated at constant speed.
  • a device for continuously manufacturing a coaxial cable comprising a annealer to form rings on a conduct of the cable and control means, the means control devices being arranged to operate the corrugator at constant speed.
  • the method according to the invention aims at producing a corrugated coaxial cable 2 as represented for example in Figure 1.
  • This cable includes a central conductor metal 4 constituting the core of the cable.
  • the cable comprises a dielectric material 6 of tubular form cylindrical covering the central conductor 4.
  • the dielectric material consists of an expanded polymer and extruded.
  • the cable further comprises a conductor peripheral 8 of cylindrical tubular shape covering the dielectric material 6.
  • the cable comprises a sheath 10 in tubular polymeric material cylindrical covering the peripheral conductor 8.
  • the layers 4, 6, 8 and 10 succeed each other directly above the others and in this order following the radial direction from the central axis of the cable.
  • Such a structure is known in itself and will not be not further detailed here.
  • the peripheral conductor 8 is corrugated for provide flexibility to the cable in a known manner in itself.
  • the annealing operation consists of forming a helical groove or in the form of a straight corrugation in the peripheral conductor from the outer face of this one to give it the appearance of a succession rings.
  • the device illustrated in FIG. FIG. 2 comprises a production drum 12 or drum upstream constituting a reserve of a formed cable element at this stage only by the center conductor 4 and the dielectric 6 surrounding it.
  • the device forms a production line comprising different items than the cable element crosses successively, the manufacture having however place continuously.
  • the upstream and downstream directions refer therefore in the direction of movement of the cable element to during manufacture, indicated by the arrow 11.
  • the chain Downstream of the drum 12, the chain includes a station 14 in which the cable element 4, 6 from the drum is introduced into the conductor 8 device still in the state of smooth tube.
  • the channel Downstream of this introductory post, the channel includes an intermediate training station 16 in which the peripheral conductor 8 is driven next the downstream direction.
  • This item includes a caterpillar 18 having two endless bands resulting in the driver following a straight horizontal path and extending above and below the driver 8 of either side of it to sandwich it.
  • the chain Downstream of the intermediate training station 16, the chain comprises an annealing station or annealer 20 in which are made the corrugations on the Peripheral conductor 8.
  • this one includes a reception drum or reel 22 on which is wound up the cable element comprising stage the central conductor 4, the dielectric 6 and the ringed peripheral conductor 8.
  • the annealer 20 comprises a frame 40 and a shaft hollow 42 crossed along its axis 45 by the element of cable being manufactured.
  • the annealer includes two rolling bearings 44 with which the shaft is mounted mobile rotation relative to the frame around the axis 45 which is also the axis of the cable. This rotation is indicated by the arrow 46.
  • the cable element slides in the tree along the downstream direction 11 parallel to this axis without turning on itself. To avoid problems contact friction in the tree, sufficient clearance is provided between them.
  • the annealer comprises a motor 48 driving the shaft 42 rotating through a transmission 50.
  • the annealer comprises a ring head 52 fixed rigidly at the upstream end of the shaft 42 and rotating therefore at the same speed. This speed of rotation is called speed of the annealer in the this description.
  • the annealer comprises a tool holder 54 connected to the head 52 by a transverse axis 56 radial to the axis of rotation 45.
  • the head comprises actuating means the axis to adjust a radial position of the tool holder relative to the head along arrow 57, as well as angular position along arrow 59 as a function of parameters of the desired annealing.
  • the annealer includes a tool 56 of form annular or helical according to the type of annealing, housed in the tool holder 54, a roller bearing 58 being interposed radially therebetween.
  • Tooling 56 and the bearing 58 have a common axis not shown, parallel and distant from the axis 45 or inclined with respect to the axis 45. Owing to the presence of the bearing 58, the tooling 56 is free to rotate relative to the tool holder 54 which does not does that define the angular and radial position of tooling relative to the axis 45 of the cable.
  • the tooling 56 rolls on the cable 2 by making the corrugations by deformation of the 8. This movement is the result of the conjunction of rotation 46 of the anneller and the sliding of the cable in the annealer.
  • the chain further comprises a upstream training station 24 extending downstream of the upstream drum 12 and upstream of the insertion station 14.
  • the chain also includes a training station downstream 26 extending downstream of the annealer 20 and upstream of the reception drum 22. This training station serves to drive towards the reel the cable element provided ringed peripheral conductor 8.
  • the training stations 24 and 26 are shaped basically like the training station intermediate 16 and formed of a caterpillar each.
  • this chain does not not include a puppet interposed between caterpillar 24 and the annealer 20 to adjust the voltage of the element of cable.
  • the downstream puppet usually arranged between the annealer 20 and the drum 22 and used for the regulation of the speed is replaced by a simple guide pulley 30.
  • This introductory mode has the advantage of not disrupt the positioning edge to edge of the ribbon copper under the welding torch, so reduce the risks of welding defects. It also has the advantage of put the dielectric at an optimal position by compared to the hot spot given by the welding of the driver.
  • the speeds V1 and V2 of these two stations are fixed and constant over time. This eliminates the inconvenience parasitic relative slippage of the cable element consisting of the central conductor 4 with its dielectric 6 with respect to the peripheral conductor ringed 8 at the leveler 20.
  • the amount of driver peripheral is equal to amount of peripheral driver consumed by the annealer 20.
  • This amount of peripheral conductor consumed is a function of the speed V2, the diameter of the 8 peripheral driver tube and parameters of the annelure, namely the diameter on annulus, the bottom of annealing, the pitch and shape of the annelure.
  • this positive training helps to fix the rotational speed of the annealer head 20.
  • it becomes the speed of reference, unlike previous processes which took as reference speed that of the post 16.
  • the speed of the corrugator is here constant.
  • the speed V3 of the downstream station 26 is made equal to the speed V1 of the upstream station 24 driving the central conductor provided with its dielectric.
  • This V3 speed remains proportional at the speed of reference which is that of the annealer whatever it is, even in the rising and speed descent. It is the same for the speed of post 24.
  • the present implementation of the invention defines a speed of the annealer 20, a tooling, a diameter of annealing and a bottom of annealing. Then, from these parameters, we define the V2 speed of the peripheral driver tube 8, the tube diameter and speed V1 of the cable element formed of the central conductor 4 and the dielectric 6. calculations are within the reach of the skilled person.
  • the process of the invention eliminates the disadvantages of known methods related to instability permanent and a difficulty of piloting based on on predetermined drive speeds and a stable annealing speed. It also avoids instabilities due to the winding memory of the dielectric 8, to variations in the diameter of the dielectric and the different voltage variations of on both sides of the anneller.
  • the chain includes means of command 21 to set the speed of the annealer 20.
  • the annealer 20 and the different posts 24, 16, 26 may be trained by a member of the common motorisation.
  • the pulley 30 gives a minimum tension and sufficient practice for the cable to exit the annealer but without interfering with the formation of this annelure.
  • Figure 5 presents a second mode of realization rather close to the mode of Figure 2.
  • a production line 34 not illustrated in detail but known in itself, in which one installs the dielectric 6 on the driver 4. This chain runs continuously and direct connection with the production line previously described.
  • a sheathing chain 36 operating in continuous and in direct connection with the chain according to the invention described above.
  • This chain allows the placing the sheath 10 on the cable element provided with ringed peripheral conductor 8.
  • a tandem setting of two receivers can also be provided at this level.
  • the chain includes in besides means for measuring the position of the pulley 30, here in the vertical direction, and to modify the speed of the downstream training station 26 when this position exceeds a predetermined threshold.
  • the purpose of this speed control is to make sure that the pulley keeps a fixed position.
  • Tandemizations make the process particularly economical by ensuring a very high quality and result in a decrease considerable waste associated with each start-up of individual operations.
  • the invention may be implemented with a corrugator operating at a speed from 8,000 to 15,000 rpm. All equipment the chain can be connected to a fieldbus.
  • the control means 21 may be connected to a computer receiving data from all organs of the channel for their display in real time for the purposes of manufacturing monitoring and archiving.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Waveguide Aerials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP02293118A 2001-12-19 2002-12-17 Verfahren und Vorrichtung zur kontinuierlichen Herstellung eines gewellten Koaxialkabels Expired - Lifetime EP1324354B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0116458 2001-12-19
FR0116458A FR2833746B1 (fr) 2001-12-19 2001-12-19 Procede de fabrication en continu d'un cable coaxial annele

Publications (2)

Publication Number Publication Date
EP1324354A1 true EP1324354A1 (de) 2003-07-02
EP1324354B1 EP1324354B1 (de) 2008-09-03

Family

ID=8870687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02293118A Expired - Lifetime EP1324354B1 (de) 2001-12-19 2002-12-17 Verfahren und Vorrichtung zur kontinuierlichen Herstellung eines gewellten Koaxialkabels

Country Status (5)

Country Link
US (1) US7266886B2 (de)
EP (1) EP1324354B1 (de)
AT (1) ATE407435T1 (de)
DE (1) DE60228672D1 (de)
FR (1) FR2833746B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7845069B2 (en) * 2007-11-30 2010-12-07 Commscope, Inc. Of North Carolina Methods for forming armored cable assembly
US7702203B1 (en) 2008-10-30 2010-04-20 Corning Cable Systems Llc Armored fiber optic assemblies and methods of making the same
US8463095B2 (en) * 2009-04-09 2013-06-11 Corning Cable Systems Llc Armored fiber optic assemblies and methods of forming fiber optic assemblies
US20100278492A1 (en) 2009-04-30 2010-11-04 Bohler Gregory B Armored Fiber Optic Assemblies and Methods of Forming Fiber Optic Assemblies
US8331748B2 (en) 2009-09-30 2012-12-11 Corning Cable Systems Llc Armored fiber optic assemblies and methods employing bend-resistant multimode fiber
US9170390B2 (en) 2010-04-23 2015-10-27 Corning Cable Systems Llc Armored fiber optic assemblies and methods of forming fiber optic assemblies
CN104252920B (zh) * 2014-09-04 2016-03-23 浙江龙游公任电子有限公司 一种同轴线缆生产线的控制系统及其控制方法
CN209167604U (zh) * 2018-06-27 2019-07-26 罗森伯格技术（昆山）有限公司 一种室外铠装光缆
US20230198335A1 (en) * 2021-12-20 2023-06-22 Baker Hughes Holdings Llc Continuously Welded Capillary Tubing Over Insulated Conductor for ESP Applications

Citations (4)

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Publication number Priority date Publication date Assignee Title
GB935260A (en) * 1961-03-21 1963-08-28 Schwermaschb E Thalmann Veb Appliances for grooving the sheaths of cables and speed adjustment means therefor
US3572074A (en) * 1968-01-09 1971-03-23 Pirelli General Cable Works Corrugating methods and apparatus
US4043161A (en) * 1975-11-07 1977-08-23 Astrolab, Inc. Apparatus for forming corrugations of "zero" pitch in coaxial cable
US4083484A (en) * 1974-11-19 1978-04-11 Kabel-Und Metallwerke Gutehoffnungshutte Ag Process and apparatus for manufacturing flexible shielded coaxial cable

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US2156934A (en) * 1932-06-23 1939-05-02 Western Electric Co Apparatus for manufacturing electric cables
US2018477A (en) * 1932-08-26 1935-10-22 Bell Telephone Labor Inc Coaxial conductor system
DE1778094C3 (de) * 1968-03-28 1978-12-07 Fraenkische Isolierrohr- & Metallwaren-Werke, Gebr. Kirchner, 8729 Koenigsberg Vorrichtung zum fortlaufenden Lochen der Wandung von dünnwandigen Faltenrohren
US3691488A (en) * 1970-09-14 1972-09-12 Andrew Corp Radiating coaxial cable and method of manufacture thereof
DE2331757A1 (de) * 1973-06-22 1975-03-20 Kabel Metallwerke Ghh Verfahren zur herstellung von druckfesten metallrohren
US3945552A (en) * 1974-12-09 1976-03-23 Furukawa Electric Co., Ltd. Method and apparatus for forming a corrugated waveguide
US4378462A (en) * 1980-08-01 1983-03-29 Western Electric Company, Inc. Self-supporting aerial cable and method of making same
US4778543A (en) * 1986-03-31 1988-10-18 Northern Telecom Limited Methods and apparatus for making electrical cable
US4758685A (en) * 1986-11-24 1988-07-19 Flexco Microwave, Inc. Flexible coaxial cable and method of making same
US5181316A (en) * 1991-08-23 1993-01-26 Flexco Microwave, Inc. Method for making flexible coaxial cable
JPH0620540A (ja) * 1992-07-02 1994-01-28 Mitsubishi Cable Ind Ltd 波付同軸ケーブルの製造装置
US5959245A (en) * 1996-05-30 1999-09-28 Commscope, Inc. Of North Carolina Coaxial cable
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB935260A (en) * 1961-03-21 1963-08-28 Schwermaschb E Thalmann Veb Appliances for grooving the sheaths of cables and speed adjustment means therefor
US3572074A (en) * 1968-01-09 1971-03-23 Pirelli General Cable Works Corrugating methods and apparatus
US4083484A (en) * 1974-11-19 1978-04-11 Kabel-Und Metallwerke Gutehoffnungshutte Ag Process and apparatus for manufacturing flexible shielded coaxial cable
US4043161A (en) * 1975-11-07 1977-08-23 Astrolab, Inc. Apparatus for forming corrugations of "zero" pitch in coaxial cable

Also Published As

Publication number Publication date
US20030111768A1 (en) 2003-06-19
US7266886B2 (en) 2007-09-11
EP1324354B1 (de) 2008-09-03
ATE407435T1 (de) 2008-09-15
FR2833746A1 (fr) 2003-06-20
DE60228672D1 (de) 2008-10-16
FR2833746B1 (fr) 2004-02-20

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