EP0147071B1 - Herstellung von Nachrichtenkabelseelen - Google Patents

Herstellung von Nachrichtenkabelseelen Download PDF

Info

Publication number
EP0147071B1
EP0147071B1 EP19840308216 EP84308216A EP0147071B1 EP 0147071 B1 EP0147071 B1 EP 0147071B1 EP 19840308216 EP19840308216 EP 19840308216 EP 84308216 A EP84308216 A EP 84308216A EP 0147071 B1 EP0147071 B1 EP 0147071B1
Authority
EP
European Patent Office
Prior art keywords
core unit
twist
conductor
twisted
units
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.)
Expired
Application number
EP19840308216
Other languages
English (en)
French (fr)
Other versions
EP0147071A3 (en
EP0147071A2 (de
Inventor
Philip Anthony Mcgettigan
Jean Marc Roberge
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of EP0147071A2 publication Critical patent/EP0147071A2/de
Publication of EP0147071A3 publication Critical patent/EP0147071A3/en
Application granted granted Critical
Publication of EP0147071B1 publication Critical patent/EP0147071B1/de
Expired legal-status Critical Current

Links

Images

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
    • H01B13/0228—Stranding-up by a twisting pay-off and take-up device

Definitions

  • This invention relates to the manufacture of telecommunications cable cores.
  • a telecommunications cable is constructed with a core having a multiplicity of twisted units of conductors, each unit conventionally being a twisted pair of conductors.
  • a core may be typically formed as a single core unit of twisted pairs, e.g. 50 or 100 pairs, or larger cores, e.g. up to 4,200 twisted pairs, each comprises a plurality of core units.
  • the twisted pairs are assembled together, e.g. by stranding, to form a core unit with the conductors of each pair twisted together with a predetermined lead to the twist, i.e. the distance taken along the pair for each conductor to complete a single revolution along its path. This distance will be referred to in this specification as the "twist lay" of a pair.
  • angle of twist lay The angle which each conductor makes with the longitudinal axis of its conductor unit as it extends along its twisted path will be referred to as the "angle of twist lay".
  • twist lays provided for the twisted pairs in a core unit with each pair having a particular lay and being adjacent to other pairs of different lays. Care is taken, so far as is practicable, to ensure that pairs of equal or substantially equal twist lays are separated from each other. The reason for this arrangement is to attempt to maximize the communications performance of the cable, i.e. to lessen pair-to-pair capacitance unbalance and to reduce crosstalk between pairs.
  • the conductors of each pair are twisted together in a completely separate operation from forming of twisted pairs into a core unit.
  • the conductors of each pair are twisted together in a high speed twisting machine in which the two conductors are held upon reels which are freely rotatable in a reel cradle.
  • the two conductors are fed from their reels, are brought together into a common path and are twisted into the pair by rotating a flyer.
  • the twisted pair is then wound onto another reel immediately after twisting. This reel is removed from the twisting machine and stored until required for forming into a core unit. At this stage, it is placed in supply stands for a core unit forming means with other reels of twisted pairs and the core unit is built.
  • a problem with this process is that a large inventory and storage for reels of twisted pairs of different conductor gauges, insulation colours and of twist lay are required for making core units which may be of different gauge, colour or arrangement of twist lays in the pairs from one unit to the next.
  • a cable core of 3,600 twisted pairs of pulp insulated conductor may require up to twenty-five different lengths of twist pitch for the manufacture of its core units.
  • the present invention provides a method and apparatus for the manufacture of a core unit in which the inventory and storage for reels of twisted pairs is avoided.
  • the method and apparatus of the invention allow for the manufacture of a cable core unit in which pair-to-pair capacitance unbalance and cross-talk between pairs is reduced and in which mutual capacitance between conductors in certain pairs is also reduced.
  • an apparatus for making a core unit for a telecommunications cable from twisted units of individually insulated conductors having a plurality of twisting machines each carrying a plurality of reels of insulated conductor and each comprising a flyer which is rotatable to introduce twist into the conductors to cause them to twist to form a twisted unit, means for rotating each of the flyers, and a core unit forming and take-up means in tandem with the twisting machines to draw the twisted units together and form a core unit, the forming and take-up means comprising drawing means to draw twisted units into the forming and take-up means characterized in that each of the flyers is rotatable by the rotating means at speeds which are variable independently of the rotational speeds of other flyers, and are variable during operation of the drawing means to draw twisted units into the forming and take-up means.
  • the twist lay angles of all the conductor units may be varied along the length of the core unit thereby preventing any conductor unit from having a short twist lay along its whole length so as to minimize mutual capacitance between conductors in the conductor unit.
  • the twist lay angles may differ between conductor units or may be changing in a different sense so as to minimize pair-to-pair capacitance unbalance and cross-talk between pairs.
  • the flyers may be arranged with their rotation speeds in groups.
  • the speed ratios of groups may be changed.
  • each flyer is independently drivable to enable it to have its rotational speed changed without affecting the speeds of any other flyer, whereby its speed ratio relative to any other flyer is changeable.
  • This may be made possible by providing a suitable individual and changeable speed drive to each flyer such as a mechanical drive having manually or automatically selectable gear ratios.
  • the angle and length of twist lay of any twisted pair is, of course, influenced by the relationship of the speed of rotation of its flyer and the feed speed of the conductors through the twisting machine, the latter governed by the line speed of the core unit being formed.
  • the ratio of speeds of rotation of the flyers may be changed after manufacture of a core unit thereby changing the relationship between the twist lays of the pairs, thus resulting in the succeeding core unit being of different design.
  • the present invention provides apparatus which produces a plurality of twisted pairs and then forms a core unit in tandem with the twisting operation, thereby avoiding the use of two distinct and separate process steps for these operations and the consequent need for an inventory and storage of reels of twisted conductor pairs of different twist lay and colours.
  • the apparatus has a universal application for core unit manufacture in that it is capable of producing many distinct and different twist lays from each twisting machine to provide the capability for a change in design of core unit.
  • means is provided to measure the line speed of the core unit being made and a signal sent from the measuring means influences the rotating means for the flyers to vary flyer rotation according to any variation in core unit line speed.
  • the flyer is preferably changeable on a continuously changing or cycling basis between upper and lower limits for angles of twist lays, e.g. angles which correspond to twist lays between 2.7 inches and 5.1 inches. While it is possible to provide a complete cycle of change in angle of twist lay between upper and lower limits over different lengths of the core unit for different twisted pairs, this would provide crossover points of the cycles thus producing equal angles of twist lays for different pairs at specific locations along the core unit. As the occurrence of such phenomenon should be minimized as much as possible, it is preferable that all of the cycles are of the same length and are out of phase with one another.
  • the invention also includes a method of making a core unit of twisted insulated conductor units in which insulated conductors are twisted together in twisting stations into a plurality of twisted insulated conductor units with each conductor unit having a single direction of twist along its length, the twisted conductor units being moved upstream from the twisting stations and into a core unit forming and take up means to draw the twisted units together to form the core unit characterized in changing the angles of twist lay of some of the conductor units as the units are being formed while providing for each conductor unit, at any cross-section through the core unit, an angle of twist lay which either differs from that of another conductor unit or is changing in a different sense from that of another conductor unit.
  • the angles of twist lay of all of the conductor units are changed continuously in cycles which have substantially equal lengths, amplitudes and cycle shapes.
  • the average twist lay of each unit is substantially equal to that of each other unit, thereby reducing to substantially zero, the variation in mutual capacitance due to each conductor unit having different twist lays.
  • angles of twist lays of all the conductor units may be changed continuously, it is possible to leave the lay angle of one or more of the twisted conductor units unchanged in a case where the twist lays of these certain units are outside the limits of the changing lays.
  • the invention includes a core unit for a telecommunications cable comprising a plurality of insulated conductors formed into twisted conductor units with each conductor unit having a single direction of twist along its length characterized in that the angles of twist lay of some at least of the conductor units change along the length of the core unit and, at any cross-section are either different from twist lay angles of other conductor units or are changing in a different sense from twist lay angles of other conductor units.
  • the twist lay angles change continuously and in a practical arrangement, the angles change in a cycling manner between upper and lower limits and preferably with all lay angles either being different or changing in a different sense from another conductor unit which has the same twist lay at any cross-section of the core units.
  • apparatus for making a stranded, core unit of one hundred twisted pairs of conductors comprises apparatus for twisting the conductor pairs, including a hundred twisting machines 10 arranged in four straight banks 12 of machines with twenty-five machines in each bank.
  • the apparatus is capable of making cable core unit at speeds of up to and possibly in excess of 600 ft. per minute.
  • a core unit forming and take-up means comprising a stranding machine 14, which is of conventional construction.
  • the forming and take-up means also comprises, in normal fashion, a closing head 16 for drawing twisted conductor units together and a binder 18.
  • the stranding machine comprises a stranding flyer 17 having a "helper" capstan 19 to assist in drawing the conductor pairs through the head 16 and binder 18 in forming the core unit 23.
  • the main drawing means comprises a take-up reel 21 with its drive motor 20. The construction of the forming and take-up means is conventional and will be described no further.
  • Each of the twisting machines 10 comprises a cabinet 22, ( Figure 3), the cabinets together forming the rectangular shape of the banks 12 in Figures 1 and 2. Within each cabinet there is located a reel cradle 24 for holding in rotatable fashion, two reels 26 of individually insulated conductors, as shown by Figure 5, to enable the conductors to be drawn from the reels under the drawing influence of the stranding machine 14.
  • Each twisting machine may be of conventional construction for enabling the conductors to be drawn from the reels and to be twisted together as they pass through and outwardly from the machine. However, in this embodiment, each twisting machine comprises two flyers 28 and associated pulleys to provide a balanced rotational structure while avoiding conventional balance weights.
  • the two conductors 30 being removed from the reels 26 pass downwardly together as described in the aforementioned specification and then through the flyer, the flyers are rotated to provide the conductors with twist, by a drive motor 31 which is an individual AC motor mounted on top of a frame structure 32 and drivably connected to the flyers by means of a pulley 34 and pulley wheels 36.
  • a drive motor 31 which is an individual AC motor mounted on top of a frame structure 32 and drivably connected to the flyers by means of a pulley 34 and pulley wheels 36.
  • Each of the AC electric motors is a variable speed drive motor and provides a means for changing the rotational speed of the flyer, according to a feature of this invention as will be described.
  • each of the twisted pairs 38 moves along the line of its associated bank 12 of twisting machines and proceeds towards the stranding machine 14.
  • the apparatus also includes a tension equalizing means and a tension reducing means as described in a copending Canadian Patent Application Serial No. 444,295, filed December 23, 1983, and entitled "Forming Cable Core Units" in the names of J. Bouffard, A. Dumoulin and M. Seguin.
  • the tension equalizing means comprises a plurality of such means 40, one above the downstream end of each twisting machine 10. This is clearly seen from Figures 2 and 3, while the equalizing means is omitted from Figures 1 and 5 for clarity.
  • each tension equalizing means comprises a shaft 42 extending from side to side of the feed paths for the twisted pairs, the shaft being rotatable at its ends.
  • One end of the shaft enters an upstanding housing 44 and has a pulley 46 engaged by a drive belt 48.
  • This drive belt drives a group of five of the shafts 42, each of which has a pulley 46.
  • One of the drive shafts for each group of five is driven by a drive motor 50 through a drive member 52.
  • a tubular member 54 is carried in bearings around each shaft 42, so that it is in slipping, drivable engagement with the shaft in that it rotates at substantially the same angular speed as its shaft unless it is restrained. While the bearings carrying the tubular member may suffice for this purpose, the inside of the member may also be packed with grease to hold it in more positive driving engagement with the shaft.
  • Each member 54 extends beneath the feedpaths for the twisted pairs of conductors.
  • Each drive motor 50 is coupled electrically to a means (not shown) which registers the speed of the core unit through the core unit forming and take-up means.
  • This registering means which is conveniently a rotor pulser is of conventional construction and will be described no further.
  • the speed of the drive motor 50 is such as to provide a peripheral speed for the unrestrained tubular members 54, which is slightly in excess of the draw speed of the twisted pairs into the stranding machine.
  • the peripheral speed of the unrestrained tubular members is a question of choice dependent upon the tension reducing effects that are required. It has been found in practice that the peripheral speed of the tubular members 54 may exceed the speed of the twisted units into the stranding machine by up to five percent and preferably between two and three percent.
  • each bank 12 of twisting machines there are twenty-five tension equalizing means along each bank 12 of twisting machines.
  • the furthest equalizing means from the stranding machine supports only one twisted pair 38, i.e. that pair from the furthest twisting machine.
  • the number of twisted pairs supported by equalizing means increases along each bank 12, from equalizing means to equalizing means, until 25 pairs are carried by the equalizing means closest to the stranding machine.
  • Guide means in the form of guide rods 56 is provided for holding the twisted pairs 38 spaced from one another as they extend across the banks 12 of machines and thus prevents the tension in one pair from influencing that in another.
  • these guide rods 56 are located adjacent to but slightly downstream from each of the tubular members 54 and are held stationary in support brackets (not shown) in spaced apart positions axially of the tubular members.
  • the tension reducing means comprises for each bank 12 of twisting machines, two driven rotatable cylinders 58 and 60, around each of which the conductors must pass on the way to the stranding machine.
  • the two cylinders 58 and 60 are of substantially equal diameter and have a common drive (not shown).
  • a drive motor for the cylinders is electrically influenced by the line speed of the core unit within the forming and take-up means to provide a peripheral speed of each of the cylinders 58 and 60, slightly in excess of the drawing speed of the twisted pairs of conductors into the stranding machine.
  • the degree of this excess in speed is again subject to choice dependent upon design, but in this particular machine is up to five percent and is preferably in the region of three percent.
  • the two cylinders 58 and 60 are not operated to draw the twisted pairs along their feedpaths at the peripheral speed of the cylinders.
  • the cylinders 58 and 60 do not engage each of the twisted pairs along a sufficiently long arc of contact to provide enough frictional grip to draw the pairs from the twisting machines without the assistance of tension upon the pairs downstream of the cylinders and provided by the rotation of the reel 18.
  • This downstream tension provided by motor 16 actually draws the pairs from the twisting machines. In doing so, it pulls the twisted pairs onto the cylinder surfaces to increase frictional contact to enable the cylinders to drive the pairs under friction at a speed substantially that of the draw speed of reel 18.
  • the cylinders 58 and 60 would be incapable of drawing twisted pairs from the twisting machines. While this downstream tension is maintained the cylinders will provide a drive to the twisted pairs with some slippage because of the excess peripheral speed of the cylinders.
  • tension in each of the conductors created by the pull of the motor 20 is at least partly governed by resistance to rotation of each reel 26 and flyer and the resistance offered by each guiding pulley or other surface with which a pair comes into contact. If these tension differences were still present when the twisted pairs reached the forming and take-up means, they would create differing tension conditions in the core unit which would lead to variations in the electrical characteristics. Also, the finished core unit would be contorted along its length, which would render it difficult or impossible to further process the cable.
  • the tension equalizing means overcomes this problem and the tension reducing means reduces the tensions in the pairs to enable the stranding machine to operate with no overdue strain to draw the total of a hundred twisted pairs for the stranding operation.
  • the tubular members 54 As the twisted pairs pass across and are supported by the tubular members 54, they travel at different speeds dependent upon their positions and path lengths in the cable core unit 23 being formed by the forming and take-up means. There is a tendency for the tubular members to urge the twisted pairs in the forward direction because of the faster driven peripheral speed of the members. However, with regard to each tubular member 54, because of the slipping, driving engagement between the tubular members and their shafts 42, the upstream tensions in the twisted pairs and the effect of their relative speeds combine to slow down the speed of rotation of the tubular member to a speed which is influenced by these tensions and relative speeds of the pairs.
  • each bank 12 the pairs of conductors with their relative tensions substantially closer than at upstream positions, approach and go through their tension reducing means.
  • the pull by the stranding machine increases the frictional contact of the twisted pairs against the surfaces of the cylinders.
  • these cylinders are rotating at a peripheral speed which is greater than the throughput speed of the twisted pairs into the stranding machine, their degree of grip upon the pairs is insufficient to draw the pairs from the twisting machines at the peripheral speeds of the cylinders because of the small arc of contact between the cylinders and the twisted pairs as discussed above.
  • the degree of drive by the cylinders is dependent upon the frictional grip upon them by the pairs which increases and decreases in proportion to the downstream tension created by the draw of the stranding machine.
  • the drive by the cylinders upon each pair is purely frictional and serves to reduce tension in the twisted pairs. Any slight increase in the tension downstream from the cylinders will improve their frictional engagement with the pair, thereby reducing the tension again. It follows that the tension in any twisted pair upstream of the cylinders (e.g. up to 3 lbs.) is reduced on the downstream side to an acceptable level (e.g. about 1.0 lbs.) for drawing into the stranding machine. It is stressed that the driving force applied to each twisted pair is dependent upon the downstream tension in that pair.
  • the cylinders 58 and 60 drive each twisted pair at any moment at its own individual speed irrespective of the speed of any of the other pairs.
  • the speeds on the pairs must, of course, differ from one another because of the different path lengths they will occupy in the core unit. The operation of cylinders 58 and 60 thus conveniently allows for this.
  • each of the drive motors 31 is independently drivable at a speed such as to provide a particular twist lay to the pair of conductors being formed by the associated machine 10.
  • This twist lay may be completely independent of twist lays of other pairs and may be changed either during the twisting of the pairs and forming of a core unit or after formation of one core unit and before start-up of a subsequent pair twisting and core unit forming operation.
  • FIG. 6 shows a control means for controlling the rotational speeds of the flyers.
  • This control means comprises a hundred microprocessors 66, i.e. one microprocessor for each motor 31.
  • a computer 68 is connected by an address bus 70 to each of the microprocessors.
  • the conventional means provided for measuring the actual line speed of a core unit as it is being drawn into the stranding machine is connected to each of the microprocessors by lines 71 to send frequency signals on a continuous basis, these signals corresponding to the actual core unit line speed.
  • the computer contains instructions for issuing to each of the microprocessors for controlling its associated AC motor 31 to drive the flyers of its twisting machine at the appropriate speed and provide the required twist lay to the pair of conductors being twisted upon that machine. These instructions correspond to a particular or actual line speed of the core unit being made.
  • the computer addresses the microprocessors on the address bus 70 and sends the instructions to each microprocessor in the form of a digital signal which corresponds to the required twist lay produced by that particular twisting machine. This signal is stored in a memory means of the microprocessor until it is replaced by a new digital signal sent on the address bus. A signal is then sent by each microprocessor along line 72 to an AC inverter drive 74.
  • This signal is an AC signal having a frequency corresponding to the digital signal sent on the address bus, but influenced by the frequency signal for the line speed received on line 71 so that it is modified to control the appropriate motor 31 to produce the twist lay required for the actual line speed of the core unit.
  • the AC inverter drive 74 converts the incoming signal to DC current and scrambles it to reconvert it into an AC output signal of the required frequency to drive the AC motor 31 at the desired speed.
  • the inverter drive has the effect of reducing the frequency from that received by it from the microprocessor and this frequency is one which is suitable for sending to the motor 31.
  • a signal may be sent from the computer to each microprocessor for start-up of a core unit forming operation, and then the angles of twist lays produced by each of the twisting machines is as desired and controlled by the rotational speeds of each AC drive motor 31.
  • fresh instructions may be fed into the computer to send signals to the microprocessors upon a subsequent operation to form a core unit with twisted pairs having different twist lay angles from the core unit which was formed previously.
  • the control means enables the apparatus together with the individual AC drive motors, to avoid the conventional necessity of having a storage and inventory of reeled twisted pairs of conductors of different gauges, colours and lay angles.
  • core units of different design, different lay angles, different conductor gauges, different colour and different types of insulation may be produced merely by changing the reels 26 for fresh reels in the twisting machines and by providing different instructions to the computer 68 for controlling the microprocessors.
  • one or all of the twisted pairs may have twist lay angles which vary and these angles preferably vary on a continuous cyclical basis between upper and lower twist angle limits.
  • this apparatus makes it possible to provide varying twist lay angles which at any particular position along the core unit either differ one from each of the others or two of the angles may be the same as one another over an insignificantly short distance at cyclic crossover points with the angles changing in opposite sense from one another.
  • This can be effectively provided by issuing suitable instructions through the computer 68 to cause the flyers 28 to rotate at varying speeds to produce twist lay angles, which while lying between the same upper and lower limits, do in fact, cycle between these limits in out-of-phase relationship with each other.
  • twelve out-of-phase cycling twist lay angles are provided. Eight of the phases may each be applied to eight pairs of conductors and the remaining four phases may each be applied to nine pairs of conductors.
  • each cycle has the twist lay angles cycling between an angle which is represented by upper limit of twist lay of 4.9 inches and one which is represented by a lower limit of 2.7 inches.
  • a complete cycle for each twisted pair occurs over a distance of approximately 100 meters of the finished core unit.
  • the cycles of twist lay angle of the pairs have substantially equal lengths, amplitudes and other cyclic characteristics to produce average twist lays in the units which are substantially equal thereby minimizing differences in the mutual capacitance from one pair to another and which is influenced by the twist lay.
  • each cycling phase of twist lay angles produces an angle equal to that of another phase where one twist lay angle is increasing on its cycle, while the other is decreasing.
  • this cycle has the same twist lay and lay angle value at points 78 and 80 as cycles 82 and 84 respectively for different conductor pairs.
  • twist lay angles of the pairs are equal at these crossover points on the chart, then these points represent extremely short distances along the core unit which can have only an extremely minor effect upon the electrical characteristics of the finished cable.
  • the method of producing the varying lay angles ensures that the motors 31 drive in such a way as to produce movement along the cycle between the cycle limits in one direction along a shorter length of core unit than in the other direction.
  • Figure 8 is a graph representing a possible twenty-five out-of-phase cycles of lay angles. As shown in Figure 8, the varying twist lay angles are represented by upper and lower limits of twist lay of 2.7 and 5.1 inches and each cycle occurs over approximately 100 meters.
  • Figures 7 and 8 show cycles of twist lay angles with substantially equal lengths and amplitudes.
  • substantially equal average twist lays in the conductor pairs may be produced by having varying cycle lengths and amplitudes in the cycles of twist lay angle in each pair, but, of course, this would be more difficult to accomplish.
  • the average twist lay of each conductor unit is substantially equal to that of every other unit thereby substantially entirely avoiding differences in mutual capacitance and mutual inductance between the conductor units which is influenced by the twist lay.

Landscapes

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

Claims (27)

1. Vorrichtung zum Herstellen einer Seeleneinheit für ein Fernmelde-Verbindungskabel aus verdrillten Einheiten von einzeln isolierten Leitern, mit einer Vielzahl von Drillmaschinen (10), die jeweils eine Vielzahl von Rollen (26) isolierter Leiter (30) tragen und jeweils einen Flyer (28) umfassen, der zum Einführen eines Dralls in die Leiter drehbar ist, um sie verdrillen zu lassen zur Ausbildung einer verdrillten Einheit (38), Mittel (31, 35, 36) zum Drehen jedes Flyers und ein Seeleneinheits-Formungs- und -Aufnahmemittel (14, 16, 18) in Tandem-Anordnung mit den Verdrillmaschinen, um die verdrillten Einheiten zusammenzuziehen und eine Seeleneinheit (23) auszubilden, wobei das Formungs- und Aufnahmemittel Zugmittel (19, 20, 21) umfaßt, um verdrillte Einheiten in das Formungs- und Aufnahmemittel einzuziehen, dadurch gekennzeichnet, daß jeder Flyer durch das Drehmittel mit Drehzahlen drehbar ist, die unabhängig von den Drehzahlen anderer Flyer veränderbar sind und während des Betriebs des Zugmittels veränderbar sind, um verdrillte Einheiten in das Formungs- und Aufnahmemittel einzuziehen.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mindestens einige Verdrillmaschinen jeweils einen Wechselstrom-Antriebsmotor (31) zum Drehen des Flyers der Maschine unabhängig von Flyern anderer Maschinen enthalten.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie ein Steuermittel (66, 68, 70) besitzt zum Steuern der Drehzahl jedes Motors, wobei das Steuermittel betreibbar ist, ein Signal entsprechend dem gewünschten Drallschlagwinkel einer durch eine Verdrillmaschine auszubildenden verdrillten Einheit zu erzeugen, um deren Wechselstrommotor den jeweiligen Flyer mit einer der Leitungsgeschwindigkeit der Vorrichtung zugeordneten Drehzahl drehen zu lassen, um den gewünschten Drallschlagwinkel zu erzeugen.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Steuermittel enthält: einen Computer (68), einen Mikroprozessor (66) für jeden Wechselstrommotor (31), wobei der Computer mit jedem Mikroprozessor verbunden ist, um ein erstes Signal an diesen zu senden, das dem gewünschten Drallschlag-Winkel bei einer bestimmten Leitungsgeschwindigkeit der Vorrichtung entspricht, der Mikroprozessor befähigt ist, ein Grund-Steuersignal entsprechend dem gespeicherten ersten Signal und modifiziert durch das zweite Signal auszugeben, um die Antriebsdrehzahl des zugehörigen Wechselstrommotors zu steuern und den gewünschten Verdrillschlagwinkel bei der tatsächlichen Leitungsgeschwindigkeit zu schaffen.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß ein Wechselstrom-Inverterantrieb (74) zwischen jedem Mikroprozessor (66) und seinem zugeordneten Wechselstrommotor (31) angeordnet ist, und daß der Inverterantrieb befähigt ist, das Grund-Steuersignal in ein endgültiges Steuersignal zu wandeln, welches ein Wechselstromfrequenz-Steuersignal ist und durch den Wechselstrom-Antriebsmotor zum Steuern seiner Antriebsdrehzahl empfangen wird.
6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß erste zumindestens einem Mikroprozessor zugesendete Signal während des Betriebs seines Wechselstrommotors änderbar ist, um den Flyer zu drehen, und während der Verseilens einer Seeleneinheit.
7. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das erste jedem Mikroprozessor zugesendete Signal änderbar ist.
8. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das erste jedem Mikroprozessor zugesendete Signal änderbar und zu jedem bestimmten Zeitpunkt derart ist, daß es in dem dem Mikroprozessor zugeordneten Wechseistrommotor einen Antrieb mit einer Drehzahl verursacht, die seinen Flyer mit einer gegenüber allen anderen Flyern unterschiedlichen Drehzahl drehen läßt.
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß jedes erste Signal in zyklischer Weise änderbar ist, um den zugehörigen Flyer so drehen zu lassen, daß eine Zunahme und eine Abnahme des Drallschlagwinkels der zugehörigen verdrillten Einheit kontinuierlich zwischen oberen und unteren Grenzen erzeugt wird.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß sich der Wert des ersten Signals während seines Zyklus in einer Richtung mit einer anderen Rate ändert als in der anderen Richtung.
11. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die ersten den Mikroprozessoren zugesendeten Signale in Zyklen änderbar sind, die gleicher Länge und alle gegenseitig außer Phase sind.
12. Verfahren zum Herstellen einer Seeleneinheit (23) aus verdrillten isolierten Leitereinheiten (38), bei dem isolierte Leiter (30) in Verdrillstationen zu einer Vielzahl verdrillter isolierter Leitereinheiten verdrillt werden, wobei jede Leitereinheit eine einzige Drallrichtung in ihrer Länge besitzt, die verdrillten Leitereinheiten in Vorschubrichtung vor den Verdrillstationen und in ein Seeleneinheit-Formungs- und -Aufnahmemittel (14, 16, 18) bewegt werden, um die verdrillten Einheiten zusammenzuziehen und die Seeleneinheit zu bilden, dadurch gekennzeichnet, daß die Drallschlagwinkel einiger Leitereinheiten geändert werden, während die Einheiten gebildet werden, wobei bei jeder Leitereinheit in jedem Querschnitt durch die Seeleneinheit ein Drallschlagwinkel geschaffen wird, der sich entweder von dem einer anderen Einheit unterscheidet oder in einem unterschiedlichen Sinn gegenüber dem einer anderen Leitereinheit ändert.
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß bei dem Verfahren kontinuierlich die Drallschlagwinkel aller Leitereinheiten geändert werden, während die Einheiten ausgebildet werden, um in der Seeleneinheit einen durchschnittlichen Drallschlagwinkel in jeder Einheit zu schaffen, der im wesentlichen über spezifische Längen der Seeleneinheit gleich dem jeder anderen Einheit ist.
14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß die Drallschlag-Winkel zyklisch geändert werden, wobei die Zyklen (17, 82, 84) im wesentlichen die gleiche Charakteristik, Amplitude und Länge haben.
15. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß dabei gleichzeitig beim Formen der Einheiten die Winkel der Drallschläge aller Leitereinheiten geändert werden.
16. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß die Drallschlagwinkel kontinuierlich geändert werden.
17. Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß bei dem Verfahren Drallschlagwinkel zyklisch geändert werden, wobei die zu irgendeinem bestimmten Zeitpunkt gebildeten Zyklen (76, 82, 84) von im wesentlichen gleicher Länge und gegenseitig außer Phase sind.
18. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß bei dem Verfahren alle Drallschlagwinkel kontinuierlich und zyklisch geändert werden, wobei alle Zyklen (76, 82, 84) von im wesentlichen von gleicher Länge und gegenseitig außer Phase sind.
19. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß dabei Drallschlagwinkel gebildet werden durch Durchleiten isolierter Leiter durch Flyer (28) an jeder Drallstation, wobei jeder Flyer durch einen eigenen Wechselstrom-Antriebsmotor (31) gedreht und jeder Drallschlagwinkel durch Verändern der Antriebsdrehzahl des Wechselstrom-Antriebsmotors geändert wird.
20. Verfahren nach Anspruch 17, dadurch gekennzeichnet, daß dabei Drallschlagwinkel mit im wesentlichen identischen Zykluswegen (76, 82, 84) der Änderung gebildet werden, und längs jedes Zyklusweges der Drallschlagwinkel mit einer Rate ansteigt, die unterschiedlich von seiner Abnahmerate ist.
21. Seeleneinheit für Fernmeldeverbindungskabel mit einer Vielzahl isolierter Leiter (30), die zu verdrillten Leitereinheiten (38) geformt sind, wobei jede Leitereinheit eine einzige Verdrallungsrichtung in ihrer gesamten Länge besitzt, dadurch gekennzeichnet, daß die Drallschlagwinkel mindestens einiger Leitereinheiten sich in Längsrichtung der Seeleneinheit (23) ändern und bei jedem Querschnitt entweder unterschiedlich von den Drallschlagwinkeln anderer Leitereinheiten sind oder sich in unterschiedlichem Sinn gegenüber Drallschlagwinkeln anderer Leitereinheiten ändern.
22. Seeleneinheit nach Anspruch 21, dadurch gekennzeichnet, daß sich die Drallschlagwinkel aller Leitereinheiten in Längsrichtung der Seeleneinheit ändern.
23. Seeleneinheit nach Anspruch 22, dadurch gekennzeichnet, daß die Drallschlagwinkel sich kontinuierlich und zyklisch ändern.
24. Seeleneinheit nach Anspruch 23, dadurch gekennzeichnet, daß bei irgendeinem bestimmten Querschnitt der Seeleneinheit die Zyklen (76, 82, 84) von im wesentlichen gleicher Länge und gegeneinander außer Phase sind.
25. Seeleneinheit nach Anspruch 21, dadurch gekennzeichnet, daß die Drallschlagwinkel sich in Längsrichtung der Seeleneinheit ändern, um einen Durchschnittsdrallschlag bei jeder Leitereinheit zu schaffen, der im wesentlichen gleich dem jeder anderen Leitereinheit längs spezifischer Längen der Seeleneinheit ist.
26. Seeleneinheit nach Anspruch 25, dadurch gekennzeichnet, daß sich der Drallschlagwinkel in jeder Leitereinheit kontinuierlich und sich in Zyklen ändert, wobei bei jedem bestimmten Querschnitt der Seeleneinheit Zyklen (76, 82, 84) unterschiedlicher Leitereinheiten von gleicher Charakteristik, Amplitude und Länge und gegenseitig außer phase sind.
27. Seeleneinheit nach Anspruch 25, dadurch gekennzeichnet, daß die Leiterpaare miteinander verseilt sind.
EP19840308216 1983-12-23 1984-11-27 Herstellung von Nachrichtenkabelseelen Expired EP0147071B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000444289A CA1213951A (en) 1983-12-23 1983-12-23 Manufacture of telecommunications cable core units
CA444289 1983-12-23

Publications (3)

Publication Number Publication Date
EP0147071A2 EP0147071A2 (de) 1985-07-03
EP0147071A3 EP0147071A3 (en) 1987-01-07
EP0147071B1 true EP0147071B1 (de) 1991-01-23

Family

ID=4126825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840308216 Expired EP0147071B1 (de) 1983-12-23 1984-11-27 Herstellung von Nachrichtenkabelseelen

Country Status (6)

Country Link
EP (1) EP0147071B1 (de)
JP (1) JPS617512A (de)
CA (1) CA1213951A (de)
DE (1) DE3484013D1 (de)
ES (2) ES8606725A1 (de)
FI (1) FI80162C (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715877A (en) * 1969-10-27 1973-02-13 Oki Electric Cable Communication cable
GB1303106A (de) * 1970-01-23 1973-01-17
GB1428130A (en) * 1972-10-04 1976-03-17 Cortinovis Spa Apparatus for the manufacture of telephone cables
JPS5136821A (en) * 1974-09-25 1976-03-27 Hitachi Electronics Satsuzokan no kodeninkyokukeiseihoho

Also Published As

Publication number Publication date
JPS617512A (ja) 1986-01-14
CA1213951A (en) 1986-11-12
ES549980A0 (es) 1987-05-16
FI845025L (fi) 1985-06-24
ES8706285A1 (es) 1987-05-16
FI80162B (fi) 1989-12-29
EP0147071A3 (en) 1987-01-07
FI80162C (fi) 1990-04-10
DE3484013D1 (de) 1991-02-28
JPH0381250B2 (de) 1991-12-27
ES538953A0 (es) 1986-04-16
EP0147071A2 (de) 1985-07-03
FI845025A0 (fi) 1984-12-19
ES8606725A1 (es) 1986-04-16

Similar Documents

Publication Publication Date Title
US3715877A (en) Communication cable
US4100721A (en) Apparatus for twisting insulated conductors for use in multiconductor communication cable into quads
CN102354583B (zh) 一种退扭绞线机
US6272828B1 (en) Double-twisting cable machine and cable formed therewith
US5564268A (en) Apparatus and method for the manufacture of uniform impedance communication cables for high frequency use
US4604862A (en) Manufacture of telecommunications cable cores
US4196576A (en) Method and apparatus for S-Z twisting of electrical cables
US4590754A (en) Forming cable core units
EP0147071B1 (de) Herstellung von Nachrichtenkabelseelen
US20030126851A1 (en) Apparatus and method for producing twisted pair cables with reduced propagation delay and crosstalk
CA1217251A (en) Core unit for a telecommunications cable
EP0147070B1 (de) Fertigung von Kabelseeleneinheiten
US4577403A (en) Manufacture of telecommunications cable core units
US5996325A (en) Machine for twisting conductor cables together
CA1233969A (en) Two-stage twisting device for communication cables
CN221304347U (en) Cable stranding machine with pre-stranding mechanism
CA1239278A (en) Manufacture of telecommunications cable core units
US4559771A (en) Manufacture of telecommunications cable core units
JPS5924089Y2 (ja) 通信ケ−ブルの製造装置
JPS6110928B2 (de)
CA2185876C (en) Method and apparatus for laying up electrical and/or optical strands
US4581885A (en) Manufacture of telecommunications cable core units
JPS5921467Y2 (ja) 撚線機
CA1241530A (en) Manufacture of telecommunications cable core units
EP0207612B1 (de) Herstellung von Nachrichtenkabelseeleneinheiten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19870310

17Q First examination report despatched

Effective date: 19890825

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI NL SE

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REF Corresponds to:

Ref document number: 3484013

Country of ref document: DE

Date of ref document: 19910228

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19931110

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19931117

Year of fee payment: 10

Ref country code: GB

Payment date: 19931117

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19931123

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19931129

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19931130

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19941128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941130

Ref country code: CH

Effective date: 19941130

EAL Se: european patent in force in sweden

Ref document number: 84308216.5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950801

EUG Se: european patent has lapsed

Ref document number: 84308216.5

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST