EP3775367B1 - Machine à toronner - Google Patents

Machine à toronner Download PDF

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Publication number
EP3775367B1
EP3775367B1 EP19715079.0A EP19715079A EP3775367B1 EP 3775367 B1 EP3775367 B1 EP 3775367B1 EP 19715079 A EP19715079 A EP 19715079A EP 3775367 B1 EP3775367 B1 EP 3775367B1
Authority
EP
European Patent Office
Prior art keywords
cord
deflecting roller
strand
flank
stranding
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.)
Active
Application number
EP19715079.0A
Other languages
German (de)
English (en)
Other versions
EP3775367A1 (fr
Inventor
Jürgen Kohl
Mathias Schmidt
Helmut Lämmermann
Andreas Kraus
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.)
Maschinenfabrik Niehoff GmbH and Co KG
Original Assignee
Maschinenfabrik Niehoff GmbH and Co KG
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 Maschinenfabrik Niehoff GmbH and Co KG filed Critical Maschinenfabrik Niehoff GmbH and Co KG
Publication of EP3775367A1 publication Critical patent/EP3775367A1/fr
Application granted granted Critical
Publication of EP3775367B1 publication Critical patent/EP3775367B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/02—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F7/00—Twisting wire; Twisting wire together
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/021—Guiding means for filaments, strands, ropes or cables
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2021—Strands characterised by their longitudinal shape
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2033—Parallel wires
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/4018—Rope twisting devices
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/4072—Means for mechanically reducing serpentining or mechanically killing of rope
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2015—Killing or avoiding twist
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2085—Adjusting or controlling final twist
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/08—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position
    • D07B3/085—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/08—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position
    • D07B3/10—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position with provision for imparting more than one complete twist to the ropes or cables for each revolution of the take-up reel or of the guide member
    • 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
    • H01B13/0235—Stranding-up by a twisting device situated between a pay-off device and a take-up device
    • H01B13/0264—Stranding-up by a twisting device situated between a pay-off device and a take-up device being rollers, pulleys, drums or belts

Definitions

  • the present invention relates to a stranding machine for producing a strand from a plurality of wires.
  • the wires are preferably made from a copper alloy, particularly preferably from a copper-magnesium or copper-tin alloy, for example with a proportion of 0.2 or 0.3% magnesium or tin, or also preferably from a copper-silver alloy.
  • a stranding machine of the type in question has a stranding device for stranding the wires.
  • the stranding device has a rotating rotor which has an elongated rotor bracket which is curved radially outwards and is rotatably mounted at both ends. The majority of the wires are fed to the rotor and guided over the rotor bracket, whereby the wires are twisted at one or more stranding points.
  • the stranding machine has a rotatably mounted pull-off disk for pulling the strand from the stranding device.
  • the pull-off disk is driven in order to generate the required tension for pulling the strand.
  • the strand is preferably wound onto a spool using a suitable winding device or is processed further directly. If the strand is wound onto a spool, this generally has a cylindrical spool core for winding the strand and a disc-shaped flange at each end of the spool core to prevent the windings from slipping off the spool core. While the strand is being wound onto the spool, the spool generally rotates around the longitudinal axis of the spool core (hereinafter referred to as the "spool axis").
  • the take-off disk and possibly also the winding device and the spool for winding the strand are preferably arranged within the rotation volume of the rotor bow, i.e. within the space around which the rotor bow rotates. Therefore, only a limited amount of space is available for the take-off disk, the winding device and/or the spool.
  • the spool axis can be arranged essentially at a right angle to the rotor axis, essentially parallel to the rotor axis or at another angular position relative to the rotor axis.
  • the strand preferably emerges from the rotor along the rotor axis.
  • the problem with the manufactured strand is that it can have a twist.
  • the strand tends to bend, "curl” and “roll over” when not under load, ie to form loops.
  • twist and the tendency of the strand to "curl" reduce the possible number of bending cycles, i.e. the number of bending cycles that can be carried out without material fatigue or failure.
  • From the EN 26 11 938 A1 is a device for twisting threads, in particular wire ropes or strands, with a friction disk mounted between two guides of the unwinding thread so as to be freely rotatable about an axis adjustable at an angle to the guide path, with a circumferential groove widening from the inside to the outside, the flanks of which form contact surfaces for the thread in variable diameter ranges.
  • At least one of the guides can be arranged so as to be adjustable transverse to the direction of the thread's unwinding, so that the thread within the guide path can be additionally influenced and, in addition to the twisting, a straightening effect can also be exerted, for example.
  • a stranding machine according to the preamble of claim 1 is known from DE102015001430 A1 known.
  • the invention is based on the observation that the twist and the tendency of the strand to "curl" can be reduced by a movement in the direction of the torsion of the strand resulting from the stranding, hereinafter referred to as "strand torsion", preferably in conjunction with a stretching of the strand, ie a stretching which leads to a plastic deformation of the strand.
  • a stranding machine has at least one rotatably mounted deflection roller for deflecting the strand and at least one guide device for guiding the strand, wherein the guide device is arranged such that the strand can be guided in a straight line from the guide device to the deflection roller in such a way that the strand is pressed against a first flank of the deflection roller.
  • the deflection roller has a standard design, with the running surface for the strand on the front face of the deflection roller having a wedge-shaped depression in cross section.
  • This wedge-shaped depression has a first and a second flank that is directed radially inwards at an angle to the center plane of the deflection roller.
  • the area near the inner edges of the two flanks, where the radius of the running surface is smallest, is called the roller base.
  • the strand When the strand is deflected by the deflection roller, it moves from the first flank of the deflection roller into the base of the roller on its way from the entry point to the exit point. In other words, the strand "slides” down the first flank into the base of the roller. The strand experiences a movement that occurs with or against the strand torsion.
  • the first flank By selecting the first flank from the two flanks of the running surface of the deflection roller accordingly, it can be achieved that the strand moves with the strand torsion, which reduces the tendency of the strand to "curl".
  • a pulling device is additionally arranged behind the deflection roller in the direction of movement of the strand, which is suitable for exerting a pulling force on the strand running off the deflection roller. This causes the strand to stretch, ie Stretching, which leads to a plastic deformation of the strand, which also reduces the tendency of the strand to "curl".
  • the pulling device is a winding device.
  • a winding device is already provided in many stranding machines in order to wind up the strand produced.
  • the winding device can be used to exert the desired pulling force on the strand running off the deflection roller, in particular by means of a driven spool axis in the winding device.
  • a strand contact point on the guide device from which the strand can be guided in a straight line to the deflection roller in such a way that the strand is pressed against the first flank of the deflection roller, is offset from the center plane of the deflection roller.
  • the guide device is arranged in such a way that the strand can be guided in a straight line from the guide device to the deflection roller in such a way that the strand is pressed against a second flank of the deflection roller that is different from the first flank.
  • the strand is thus pressed either against the first or against the second flank of the deflection roller.
  • This selection can be made depending on the lay direction of the strand, i.e. the direction in which the individual wires are twisted together during stranding and on which the strand torsion also depends.
  • the guide device is movable relative to the deflection roller, in particular essentially perpendicular to the center plane of the deflection roller.
  • the strand contact point on the guide device can be set precisely relative to the deflection roller. According to the invention, this also makes it possible to select the flank of the deflection roller against which the strand is to be pressed.
  • the selection of the flank of the pulley against which the strand is to be pressed can also be made by guiding the strand around on different sides of the guide device.
  • the guide device is a rotatably mounted guide roller. This allows the friction of the strand against the guide device to be reduced.
  • the invention further relates to a method for producing a strand from a plurality of wires, carried out on a stranding machine according to the invention.
  • the wires are stranded in the stranding device, the strand is guided from the stranding device to the guide device, the strand is guided in a straight line from the guide device to the deflection roller in such a way that the strand is pressed against the first flank of the deflection roller, the strand is deflected by the deflection roller, and the strand is guided away from the deflection roller.
  • the strand When deflected by the deflection roller, the strand preferably moves from the first flank into the roller base of the deflection roller.
  • FIG.1 a perspective view of a section of a stranding machine according to the invention with the course of the strand.
  • a stranding machine which in the exemplary embodiment is preferably a double-twist stranding machine.
  • the stranding machine has a stranding device in which a rotor with a rotor bracket (not shown) rotates. Inside the rotation volume of the rotor bracket, a housing 2 is suspended at its left and right ends by means of two rotor shaft bearing housings on two separate rotor shaft sections (both not shown).
  • the strand 1 runs through an opening 3 in the housing 2 to a driven pull-off disk 4, which pulls the strand 1 off the stranding device by applying a tensile stress.
  • the pull-off disk 4 and a lifting roller 5 arranged above the pull-off disk 4 and parallel to it each have a plurality of grooves through which the strand 1 is alternately guided, so that the strand 1 alternately runs through the pull-off disk 4 and the lifting roller 5 several times in total.
  • the pull-off disk 4 and the lifting roller 5 function as a first torsion lock.
  • the strand 1 then passes through two deflection rollers 6 and 7 and is deflected by a total of 270 degrees.
  • the deflection roller 7 is slightly angled so that the strand running off the deflection roller 7 does not collide with the strand running onto the deflection roller 6.
  • the strand 1 then runs along one side - in the example on the left - of a rotating guide roller 8, the axis of which runs approximately vertically.
  • the guide roller 8 causes the strand 1 to be slightly deviated from its path. is deflected and does not run onto the following deflection roller 9 in the middle, but is pressed against a flank 9a of the deflection roller 9 - in the embodiment against the left-hand side as seen in the direction of travel of the strand 1.
  • the position of the guide roller 8 relative to the deflection roller 9 can be precisely adjusted by a vernier 12. With the help of the vernier 12, the axis of the guide roller 8 can be moved back and forth essentially orthogonally to the center plane of the deflection roller 9.
  • the strand 1 wraps around the deflection roller 9 by a little less than 180 degrees. On its way from the entry point onto the deflection roller 9 on the left flank 9a to the exit point, the strand 1 moves from the flank 9a into the roller base 9b. The strand 1 moves with the strand torsion, which reduces the tendency of the strand to "curl" as described above.
  • the stranding machine also has a laying device 16 with the further deflection rollers 10 and 11, which can be moved along a laying axis on a spindle (not shown).
  • the spindle is divided into two (in Fig.1
  • the spindle is supported by bearings 13, 14 (shown cut-away) and is driven by a drive wheel 15 (also shown cut-away).
  • the spindle runs parallel to the spool axis of the winding spool of a winding device (also not shown).
  • the strand 1 runs parallel to the spindle of the laying device 16 from the deflection roller 9 and thus always runs at the same angle onto the deflection roller 10 of the laying device 16, regardless of the travel position of the laying device 16.
  • the strand 1 is again deflected by the deflection rollers 10 and 11 in order to finally be guided to a winding device and there wound onto a winding spool (both not shown) at the axial position of the winding spool predetermined by the travel position of the laying device 16.
  • the driven winding spool exerts a tensile force on the strand 1, whereby the strand 1 is pressed against the deflection roller 9, preferably with a high contact force, and is thus slightly stretched between the deflection roller 9 and the winding spool, typically by 2 to 3%. In this way, the helical structure that the strand experiences through the stranding is further minimized or even completely removed.
  • the deflection roller 9 functions as a (second) torsion lock.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Claims (9)

  1. Machine de toronnage destinée à fabriquer un toron (1) à partir d'une pluralité de fils métalliques, laquelle présente un dispositif de toronnage pour toronner les fils métalliques, avec au moins une poulie de renvoi (9) montée en rotation pour renvoyer le toron (1), caractérisée par au moins un équipement de guidage (8) pour guider le toron (1), dans laquelle l'équipement de guidage (8) est agencé de sorte que le toron (1) puisse être guidé sur une ligne droite depuis l'équipement de guidage (8) jusqu'à la poulie de renvoi (9) de sorte que le toron (1) soit poussé au choix contre un premier flanc (9a) ou contre un second flanc, différent du premier flanc (9a), de la poulie de renvoi (9), dans laquelle l'équipement de guidage (8) peut être déplacé par rapport à la poulie de renvoi (9) et ce faisant le flanc de la poulie de renvoi (9) contre lequel le toron (1) doit être poussé peut être sélectionné.
  2. Machine de toronnage selon la revendication 1, caractérisée en ce que l'équipement de guidage (8) peut être déplacé par rapport à la poulie de renvoi (9), essentiellement à la verticale par rapport au plan central de la poulie de renvoi (9).
  3. Machine de toronnage selon l'une des revendications précédentes, caractérisée en ce que dans la direction de déplacement du toron (1) et derrière la poulie de renvoi (9) est agencé un équipement de traction, lequel est approprié pour exercer une force de traction sur le toron (1) se déroulant depuis la poulie de renvoi (9).
  4. Machine de toronnage selon la revendication 3, caractérisée en ce que l'équipement de traction est un dispositif d'enroulement.
  5. Machine de toronnage selon l'une des revendications précédentes, caractérisée en ce qu'un point de contact de toron est décalé, par rapport au plan central de la poulie de renvoi (9), sur l'équipement de guidage (8) depuis lequel le toron (1) peut être guidé sur une ligne droite jusqu'à la poulie de renvoi (9) de sorte que le toron (1) soit poussé contre le premier flanc (9a) ou contre le second flanc de la poulie de renvoi (9).
  6. Machine de toronnage selon l'une des revendications précédentes, caractérisée en ce que l'équipement de guidage est une poulie de guidage (9) montée en rotation.
  7. Procédé de fabrication d'un toron (1) à partir d'une pluralité de fils métalliques, exécuté sur une machine de toronnage selon l'une des revendications précédentes, dans lequel l'équipement de guidage (8) est déplacé par rapport à la poulie de renvoi (9), moyennant quoi un premier flanc (9a) ou un second flanc, différent du premier flanc (9a), de la poulie de renvoi (9), contre lequel le toron (1) doit être poussé, est sélectionné, les fils métalliques sont toronnés dans le dispositif de toronnage, le toron (1) est guidé depuis le dispositif de toronnage jusqu'à l'équipement de guidage (8), le toron (1) est guidé sur une ligne droite depuis l'équipement de guidage (8) jusqu'à la poulie de renvoi (9) de sorte que le toron (1) soit poussé contre le premier flanc (9a) ou contre le second flanc de la poulie de renvoi (9), le toron (1) est renvoyé par la poulie de renvoi (9) et le toron (1) est guidé en s'éloignant par la poulie de renvoi (9).
  8. Procédé selon la revendication 7, caractérisé en ce que l'équipement de guidage (8) est déplacé par rapport à la poulie de renvoi (9), essentiellement à la verticale par rapport au plan central de la poulie de renvoi (9).
  9. Procédé de fabrication d'un toron (1) selon la revendication 7 ou 8, caractérisé en ce que le toron (1) se déplace vers l'intérieur lors du renvoi par la poulie de renvoi (9) depuis le premier flanc (9a) ou depuis le second flanc jusque dans le fond de poulie (9b) de la poulie de renvoi (9).
EP19715079.0A 2018-04-12 2019-04-01 Machine à toronner Active EP3775367B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018205566.1A DE102018205566A1 (de) 2018-04-12 2018-04-12 Verlitzmaschine
PCT/EP2019/058164 WO2019197193A1 (fr) 2018-04-12 2019-04-01 Machine à toronner

Publications (2)

Publication Number Publication Date
EP3775367A1 EP3775367A1 (fr) 2021-02-17
EP3775367B1 true EP3775367B1 (fr) 2024-06-05

Family

ID=66001231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19715079.0A Active EP3775367B1 (fr) 2018-04-12 2019-04-01 Machine à toronner

Country Status (10)

Country Link
US (1) US11946200B2 (fr)
EP (1) EP3775367B1 (fr)
JP (1) JP7396994B2 (fr)
CN (1) CN111655926B (fr)
DE (1) DE102018205566A1 (fr)
ES (1) ES2982539T3 (fr)
HU (1) HUE067774T2 (fr)
MX (1) MX2020006332A (fr)
PL (1) PL3775367T3 (fr)
WO (1) WO2019197193A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240082906A1 (en) * 2021-02-04 2024-03-14 W.T.M. Societa' A Responsabilita' Limitata Apparatus for detwisting wires or cables wound in spools

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015001430A1 (de) * 2015-02-05 2016-08-11 Maschinenfabrik Niehoff Gmbh & Co. Kg Verlitzmaschine

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DE102018205566A1 (de) 2019-10-17
CN111655926B (zh) 2022-11-01
PL3775367T3 (pl) 2024-10-14
CN111655926A (zh) 2020-09-11
JP7396994B2 (ja) 2023-12-12
EP3775367A1 (fr) 2021-02-17
WO2019197193A1 (fr) 2019-10-17
US11946200B2 (en) 2024-04-02
MX2020006332A (es) 2020-09-03
HUE067774T2 (hu) 2024-11-28
ES2982539T3 (es) 2024-10-16
JP2021517934A (ja) 2021-07-29
US20210001390A1 (en) 2021-01-07

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