FR2570398A1 - METHOD AND DEVICE FOR MANUFACTURING MULTI-LAYER STEEL WIRE TORONES - Google Patents

Abstract

MANUFACTURE OF STRAND OR CABLES OF MULTI-LAYER STEEL WIRE. TWO ROTATING TORSION DEVICES 10, 16 ARE PROVIDED FOR, RESPECTIVELY AVAILABLE IN FRONT AND INSIDE THE DOUBLE TORSION WIRING MACHINE 31; THESE TWO DEVICES ROTATE SYNCHRONICALLY BUT IN OPPOSITE DIRECTION, AT A SPEED WHICH IS DOUBLE THAT OF THE CIRCLE GUIDANCE 14 AND OF THE RETURN PULLEYS 13, 15 MAKING THE CABLE TO THE TORSION DEVICE 16. COMMON APPLICATIONS.

Description

The invention relates to a method and a device for the manufacture of

  strands of multi-layered steel wire

  in which the elementary steel wires are drawn from systems

  static unwinding machines and in which the winder is arranged inside a rotating system in the form of

Double twist machine.

  To make twists of multiple steel wire

  commonly used layers, strands are mainly used.

  fast. The rotors of these machines consist either of tubes or of wire guides without tubes

  rotatable. Debit reels for steel wire with cable

  are mounted inside the wiring rotor in elementary girders. In general, the wires leaving the debit reels pass through the center of the rotor, then are

  deflected outwards and pass along the rotor to

  shooting at the point of wiring where their stranding takes place. Finally, the produced strand is brought by an output device to a

receiver coil.

  The quality of products made with these materials

China is good.

  Over the years, the rapid stranding machines have continued to develop so that the elements determining the yield capacity, such as for example the basket wiring rotor, are subjected to loads such that the materials used have reached the limits of their load capacity, and that these limits themselves can only be achieved thanks to a high precision of finishing, that is to say at the cost of a high technical expense. It occurs at the same time

  an increase in the sensitivity to disturbances of the

  chines. It has therefore been tried to apply the double twist principle frequently used for the stranding of flexible materials such as copper and aluminum for the stranding of steel wires. The clean twist of the wires

  elementary steel thus provoked led to difficulties

  considerable problems and gave a product of bad quality

you.

  DE-AS 15 10 062 discloses a method and a device

  tif for the manufacture of metal cables

  no torsional stress. The metal wires are

  Rests of static debiting frames and brought to a torsion device in which the elementary wires are twisted about their longitudinal axis. Then the wires are brought to a wiring point where they are wired together. Finally the wired product is wound inside a device

  rotary winding. The winding device is mainly

  eg a double-stranded stringer.

  Compared with the use of rapid stranding machines

  This solution represents a decrease in

  in technical equipment and a reduction in the

  is lying. But it does not make it possible to ensure, with a productivity

  high, the production of a multi-layer stranded cable

good quality.

  The major disadvantage of this solution lies in the fact that the two parts of a double twist machine are not joined together in a localized way. As a result, in the guiding zone of the wired product, it occurs

  in the cage of the winding device a partial detorsion-

  the wired product, so that the structure of the layers

  is no longer assured with all the necessary precision.

  Another disadvantage is that the cage shape chosen,

  with the highly elongated guiding of the wired product and the

  Removal of the rotating form removal device in front of the winding device does not allow for a high rotation speed.

  DD-WP 143 279 describes a wiring device intended to

  born to manufacture multi-layer steel cables, in particular of the so-called "stahlcord" type. It is described in this text a device in which the elementary threads are

  brought between two twisting devices which turn synchronously

  cally. While the wires for the different layers

  of the strand to be made are not twisted, the core wire is tor-

  of. This operation is carried out at the same speed and in the same direction of rotation as the passage of the product wired on the

winding device.

  However, because there is no detorsion of the elementary son, this device does not allow to manufacture a balanced stranded cable. In addition, this device does not give any assurance against the detorsion of the strand in the guide around the coil holder of the winding device as a consequence of the principle of double torsion. The good quality of the manufactured strand is therefore not assured. The object of the invention is therefore to manufacture strands of multi-layer steel wire having a high quality, in particular the counter-balancing character, while at the same time minimizing the expense in technical machines and

  by minimizing the size of the equipment.

  The problem to be solved by the invention consists in

  to develop a process and a device for manufacturing

  strands of multi-layer steel wire o the ter-

  mine in front of the double-stranding machine

  undergoes more transformation on the path of referral to

positive winding.

  This result is obtained by the invention thanks to the fact

  that the elementary wires that are pulled under tension

  of the debtor system are twisted individually around their own longitudinal axis and, depending on the structure of the stranded assembly to be manufactured, are fed to a device

  torsion through a wiring disc or by

  cabling disks with corresponding cabling points

  dent. In this twisting device the wiring is carried out

  definitive of the strand. Then, the strand whose wiring is ter-

  is fed to the winding system through

  forward links, guides and a second torsion device. Both torsion devices have synchronous rotational speeds but their directions of rotation are opposite

  to one another. In relation to the speed of rotation of the

  deviation systems, rotational speeds of the devices

  Twist is twice as big.

  According to another remarkable point of the invention, for

  to make a cable assembly with elementary wires of

  Diameter, these elementary threads are brought by a disk

  common to the torsion device terminating the manufacture of

  cation of the cable set. When using dia-

  In different meters, the elementary twisted wires pass, in layers, through several stranding discs arranged one behind the other with the torsion device which corresponds to them. In the device according to the invention intended for

  implementation of the method according to the invention, it is provided in

  on the one hand the flow coils with their braking systems intended to maintain the constant tension during the

  all the packing of the coils, and, on the other hand, the

  positive torsion completing the manufacture of the stranded cable

  composed of torsion devices with safety devices

  the role of rotating the elementary wires

  turn of their own longitudinal axis. Moreover, in this area

  part of the device, and according to the variant embodiment,

  a cabling disk or a plurality of cable disks is provided.

  ge arranged one behind the other who receive the wire by

  layers through guide holes.

  According to another remarkable point of the invention, it is provided between the torsion device disposed in front of the machine

  twisting strand and the reel with its

  cutting machine which is located inside the double twist twisting machine of the return pulleys which are connected to each other by a circular arc guide, as well as a twisting device and a rotation device.

  lifting with reproduction device.

  The device according to the invention operates in the manner

  next. The elementary threads are unwound from the reels

  constant-voltage bitrices and, by means of a

  rage, are brought to a twisting device. Inside the twisting device, the elementary wires are twisted around their longitudinal axis. The different twisted wires are then brought to a wiring disc or twisting them

  receives in layers in holes, sorts them, then directs them

  ge to the corresponding wiring points. Then, the

  cable is fed to a twisting device which

  it does not inside the double-twist wiring machine at a rotational speed double that of the return pulleys, and thus performs their stranding. The finished strand passing through deflection pulleys and by an arcuate guidance

  then arrives at a second torsion device which is dis-

  placed inside the double-twist wiring machine.

  This second torsion device has a synchronous regime of

  that of the twisting device arranged in front of the machine

  Double twist wiring, but its direction of rotation is the opposite of the previous one. After passing through this twisting device, the finished cable is fed by the lifting device

  with a rewinding device with its

  tremusage machine on which it is wound.

  Thanks to the use of the torsion device at the end of the arcuate guide and the twisting device in front of the double-twist stranding machine, precision guiding of the steel wire strands is ensured.

  which are already completed before guidance in an arc.

  The features and advantages of the invention

  from the following description,

  for example, with reference to the accompanying drawing in which: Figure 1 shows the entire device with use of a stranding disc;

  Figure 2 shows the front part of the

  tif with use of several stranding discs;

  FIGS. 3 to 7 show examples of structures

strings.

  According to FIG. 1, the wiring device is constituted

  killed by a debtor building comprising the supply coils

  1, 2, each of these supply coils being provided with a braking system 3. By using the

  braking system 3 is ensured a tension of

  that practically constant over the entire coil fill. When leaving the supply coils 1, 2, each

  wire 4 is fed to a torsion device 5.

  mediately forward of the twisting device 5 is mounted a clamping device 6 which, in connection with the constant thread tension ensures the constancy of the location of the working point, that is to say a constant path length between the twisting device 5 and the clamping device

  6. This work point is the same for all metal wires

  4 which are wired at the same speed of rotation.

  The torsion devices 5 all turn in the same direction,

  which is the direction in which the following stranding takes place.

  The drive of the torsion devices 5 is variable: either all the torsion devices 5 rotate at an identical rotational speed, or else they rotate at the same rotational speed as those of the torsion devices 5 which guide the metal wires 4 which will have in the subsequent composite strand 12 the same layer situation or the same thickness. From the twisting devices 5, the wires 4 are fed to a wiring disc 7 in which

  according to their subsequent position in the composite strand

  Finally, they are put in order by passing through guide holes 30 and are layered at a wiring point 8, 9. The wires 4 now pass through a pair of rollers 11 within the twisting device. 10. Under the effect of the rotational movement of the torsion device

  form the composite strand 12. The composite strand 12 which pre-

  in the form of a multi-layered strand (see

  ples given in Figures 3 to 7), now go through

  pulley 13, the arcuate guidance 14 and the

  all three of which rotate with the rotational axis.

  of the double twist wiring machine to arrive at a second twisting device 16. The two

  twisting 10, 16 rotate at a speed twice that of the guide-

  the direction of rotation of the twisting device 16 is the opposite of that of the twisting device 10. In this way, a constant twist is obtained around its own axis. axis of the strand 12 whose wiring is completed before the first twisting device 10, this movement being performed at the same speed of rotation as that of the two torsion devices, 16, on the path of the guide 14 in an arc of a circle in the 2-twist twisting machine 31. Inside the double twist twisting machine 31 are arranged on

  a coil carrier the lift coil 17, the

  production 18 and the winder 19 with its cutting device

  20. The wired product 12 is brought to these elements after

  have left the twisting device 16.

  FIG. 2 shows a variant embodiment

  the layout of the different wiring points and the wiring disc. For each wiring layer, a

  wiring disk 21, 22, 23 is associated with the cable points

  ge 27, 28, 29 and corresponding torsion devices 24, 25, 26. This embodiment is used when

  treats elementary wires of different diameters

ent.

Claims (5)

  A method for making multi-layer steel wire strands or cables in which the elementary steel wires are drawn from static unwinding systems and these elementary steel wires are twisted around their   longitudinal axis, making the composite cable being ter-   prior to entry into a double twist twisting machine, characterized in that the yarns (4) are unwound from the   unwinding system under a constant voltage, are tor-   individually in torsion devices (5) and, depending on the final structure of the composite cable to be produced,   are brought through one or more cable disks.   ge (7) with wiring points (8,9) corresponding to a first   first torsion device (10) in which the stranding is completed, and by return and guide systems (13, 14,   ) are fed to a second torsion device (16)   installed in the double-twist wiring machine (31) which rotates synchronously with the twisting device (10) arranged in front of the double-twist wiring machine (31)   but in the opposite direction of it, and turn at a speed   doubles as the return and guide systems for   finally arrive at a winding system.   Process for the manufacture of multi-layer steel wire cables according to claim 1, characterized in   what twisted elementary wires are brought in through   a common wiring disk to the torch device.   which completes the manufacture of the composite cable.   3. Process for the manufacture of steel cables with several   two layers according to claim 1, characterized in that   that, in layers, the twisted elementary wires of the same diameter   or different diameters pass through several wiring disks arranged one behind the other, each having a twisting device.   4. Device adapted to the implementation of the method   according to claim 1, characterized in that between the bobbins   the debitors (1,2) with their braking systems (3), on the one hand, and a torsion device (10) whose function is to complete the manufacture of the composite cable, on the other hand, are arranged devices Rotational torsion (5) with   thread clamping devices (7), as well as a drive disc   (7) with its cabling points (8,9), receiving   through the guide holes (30) the wire (4), while being disposed between the first   (10) and the winder (18) with its trimming device   (20) of the return pulleys (13, 15) which are connected   they are provided by an arcuate guide (14) and a twisting device (16) and a lifting device (17).   with reproduction devices (18).   5. Device according to claim 4, characterized in that each elementary wiring disc (21,22,23) with its corresponding wiring point (27,28,29) is associated with a torsion device (24,25,26).