FR2629843A1 - METHOD AND DEVICE FOR MANUFACTURING STEEL WIRE TORONES WITH VARIABLE TORONING STRUCTURE - Google Patents

Abstract

The invention relates to a method and a device for manufacturing strands of steel wires with a variable stranding structure and is preferably applied to double stranding machines. The problem of developing the aforementioned method and device, using special reels and braking systems, in order to be able to perform a multiplicity of stranding programs in cooperation with the double stranding machine, is solved by the fact that the different wires are selectively extracted from upper unwinds and / or spools disposed within a unwinding frame. Furthermore, according to the invention, by the fact that the wires coming from the upper reels are guided before reaching the stranding entry to a braking adapter arranged inside the reel and surround it several times and by the fact that each spool and each brake adapter are braked by a brake controlled by the traction of the wire.

Description

METHOD AND DEVICE FOR MANUFACTURING THREADED TORONES

  STEEL HAVING A VARIABLE TORONING STRUCTURE.

  The present invention relates to a method for

  and a device for manufacturing strands of

  with a variable stranding structure and is

  preferable to double stranding machines.

  Steel wire strands are a product

  intermediate during the manufacture of stranded cables.

  They are mainly made on stringers

fast.

  A disadvantage is that the size of

  the unwinding machine is determined by the tube of

  swimming environment and whose dimensions are at their

  limited by the speed of rotation of the

fast.

  It follows that an increase in power during the manufacture of strands of steel wire on fast stranding machines is not possible because of

  frequent change of reels and reels

  limited rotational speeds of the rotor.

  For this reason, attempts have been made to produce strands of steel wire in the high efficiency double process. For example, the different threads are

  extracts according to the European patent EP 0143732 of

  Coil mills or rotary reel feeders This process is profitable only in the case of diameter

  very thin wires, because the coils must be braked

  born exactly and with the growing mass of

  reels this precise braking can no longer be achieved.

  In addition, the masses of the coils are limited in

26298'43

  decisive by rotating reel feeders. In German Offenlegungsschrift No. 2,633,280, various double pitch weaving devices on which the strands are wired are associated with a double stranding machine, on which the strands must be

  stranded in a cable. Due to the complicated structure

  dual-pitch stranding devices, vi-

  high rotational speeds and thus

  carrying strands are not feasible.

  In addition, these strands are wired twice

  are strongly subject to constraints and trans-

  further training in a cable of satisfactory quality

  health is practically impossible.

  The object of the present invention is to manufacture

  high-quality strands with variable stranding structure in the high-efficiency double-weaving process, which guarantees safe stranding and extended running times by means of special unwinding units and braking systems, that is to say short downtime due to changing debit reels

of the whole machine.

  The object of the invention is to develop a method and a device for manufacturing strands of

  steel wire with variable stranding structure, in

  both special attention to

  special braking systems, in order to be able to carry out in cooperation with the stranding machine

  doubles a multiplicity of stranding programs.

  According to the invention, this problem is solved by the fact that the various wires coming from their respective unwinding units are guided in a known manner through a stranding input equipped with double stranding devices, the different wires being extracted according to the invention selectively from upper reels and / or coils disposed within a reel. In addition according to

  'invention, by the fact that the wires coming from

  the top drains are guided before reaching the

  stranding to a brake adapter

  inside the reel and surround it more

  several times and by the fact that each coil and each brake adapter are braked by a controlled brake

by pulling the thread.

  The device for manufacturing strands of steel wire with variable stranding structure, consisting of

  a double stranding machine, a stranding input

  placed upstream equipped with pitch devices and the various unwinding units for the unwinding son, comprises according to the invention in front of the stranding input not only top reels but also a braking and unwinding frame equipped with coils and / or brake adapters, with each coil and each brake adapter being associated with a brake

controlled by pulling the wire.

  It should further be considered essential to the invention that each brake adapter is designed as a cone, with an angle of inclination α to the outside of 1 to 3 and both sides of the cone.

are arranged collars.

  The invention is explained below in more detail.

  tail using an example of realization.

  Figure 1 is an overall elevation of the

positive stranding.

  Figure 2 is a side elevation of a

  brake controlled by the traction of the wire.

  Figure 3 is a section through the reel.

  Referring to Figures 1, 2 and 3, the entire stranding device is composed of a double stranding machine 1, which is arranged upstream of an input of

stranding 2.

  Near the stranding input 2 are arranged two step devices 3, thanks to which

  layer stranding at the strand points

swim 4.

  The different wires 5 are selectively stripped of coils 6, arranged inside a reel 7, tangentially or are extracted from large coils,

  arranged in upper reels 8.

  In the case of tangential unwinding, each respective wire 5 is guided by means of a fixed roller 9 and a movable roller 10, which rests on a lever

  spring loaded brake 11 which is disposed

  12. Thanks to the spring 13, through the

  brake 14, the coil 6 is braked.

  In the case of exceeding the set thread tension, the brake 14 is released via the thread 5, so that almost constant wire pulls appear from the outer diameter of the wire.

  the coil to the core of it.

  In the case of the extraction of the wire 5 by means of the upper reels 8, the wire 5 is guided by means of rollers 15, 16 and 17 to an adapter

  brake 18, which is disposed at the location of a brake

  6 in the reel 7. In order to obtain a reliable braking of the wire 5, it is guided several times around the adapter

brake 18.

  Advantageously for holding the wire 5, the

  brake adapter 18 is formed as a cone 19 with an angle of inclination <outwards

from 1 to 3.

  In order to guide the wire 5, flanges

  are further disposed on both sides of the cone 19.

  The wire 5 leaving the brake adapter 18 is guided in a similar manner to the tangential unwinding of the coil wire 6 by means of the rollers 9 and 10. The braking is then carried out as already described above. The advantages of the invention lie in the variable use of small coils 6 or large coils whose wire 5 is extracted by means of upper reels 8, thanks to the particular braking system

  in cooperation with the brake adapter 18, if any

  necessary, the effect of a constant tensile stress of the wires 5 remaining in the case of both

extraction variants.

  For the reasons mentioned above, it is possible

  to achieve not only the product reeling to-

  The result is that it is fragile from a particular reel 7 with forces applied to the adjustable yarn for each yarn in a fine fashion, but also the stranding of multiple programs with extended reel movement times, in an extraordinarily advantageous manner with one and the same. double stranding machine for one

high quality.

Claims (5)

R E V E N D I C A T IONS   1. Method for manufacturing strands of wires   with variable strand structure, the different   son from their respective reeling units   being fed through a stranding input having at least two step devices,   double stranding machine, characterized in that the different   yarns (5) selectively extracted from reels   (8) and / or coils (6) arranged in the   wire (7) and the wires (5) from the upper reels (B) are   before reaching the stranding input (2) to an adaptation   brake actuator (18) disposed within the reel   (7) and surround it several times.   2. Method according to claim 1, characterized in that each coil (6) and each brake adapter (18) are each braked by a brake (14) controlled by the traction of the thread.   3. Device for manufacturing strands of steel wire with a variable stranding structure, consisting of   a double stranding machine, a stranding   posed upstream with step devices as well as   different units of unwinding for the threads   emptying, characterized in that in front of the entrance of   (2) are arranged not only the upper reels (8) but also a reeling frame (7), selectively equipped with reels (6) and / or adapters brake (18).   4. Device according to claim 3, characterized   in that each coil (6) and each brake adapter (18) is associated with a brake (14) controlled by the   traction of the wire arranged inside the devi age (7).   5. Device according to claims 3 and 4,   characterized in that each brake adapter (18) is in the form of a cone (19) with an inclination angle. outwardly from 1 to 3 and on both sides of the cone (19) are arranged flanges (20).