EP0493212A1 - Multifilament wire drawing apparatus and wire-card produced by said apparatus - Google Patents

Multifilament wire drawing apparatus and wire-card produced by said apparatus Download PDF

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Publication number
EP0493212A1
EP0493212A1 EP91403462A EP91403462A EP0493212A1 EP 0493212 A1 EP0493212 A1 EP 0493212A1 EP 91403462 A EP91403462 A EP 91403462A EP 91403462 A EP91403462 A EP 91403462A EP 0493212 A1 EP0493212 A1 EP 0493212A1
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EP
European Patent Office
Prior art keywords
wire
machines
wires
wick
machine
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.)
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EP91403462A
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German (de)
French (fr)
Inventor
Albert Joye
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Essex SAS
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Essex SAS
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Publication of EP0493212A1 publication Critical patent/EP0493212A1/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/12—Regulating or controlling speed of drawing drums, e.g. to influence tension; Drives; Stop or relief mechanisms

Definitions

  • the present invention relates to a multi-wire drawing device, for producing wicks of metal wires intended in particular for the manufacture of braids, strands, or twists.
  • Current multi-wire drawing machines can draw up to 24 wires in parallel.
  • Some of these machines include a drawing block made up of several drawing lines (depending on the number of wires to be drawn). Each line contains a series of dies interspersed with stepped cones secured to a common tree. Each wire follows a drawing line and passes from one die to another by means of a stepped cone. Its section gradually decreases by passing from one sector to another. All the wires constituting a wick are then directed onto a regulating jig and then onto a winder by means of a deflection pulley.
  • the puppet makes it possible to regulate the drawing speed and to regulate the traction of the wick; such multi-wire machines can draw up to ten wires in parallel.
  • multi-wire machines different from those just described include ribbed draft capstans instead of stepped cones. This makes it possible to draw several wires on the same line, the wires being side by side on the capstans and passing through multiple dies. This type of multi-wire machine allows drawing up to 24 wires at a time.
  • the final diameter of the wires obtained with multi-wire machines is between 0.05 and 0.5mm.
  • the maximum yield obtained in multi-wire is of the order of 50%; for diameters between 0.20 and 0.50mm (thick wires), always in multi-wire, it is at most 65%.
  • Single wire machines have an efficiency of around 80%. This is due to problems with the breakage of the wires. Indeed, during the breakage of a monofilament yarn, re-threading is carried out easily and quickly (in about a quarter of an hour). On the other hand, the breakage of a multifilament wire requires to stop the drawing for at least one hour, and moreover, the re-threading is very laborious and difficult. This explains the low yield obtained in multi-wire, in particular for fine wires which break more easily. In addition, in the case of ribbed capstan machines, the breakage of one thread can cause the breakage of other threads, which again implies a reduction in output.
  • the speeds are limited in multi-wire; in practice, the maximum speed is around 30ms ⁇ 1, and 15ms ⁇ 1 in particular for fine wires, while reaching 35 to 50ms ⁇ 1 in single wire. This is also due to the breakage of the wires. The higher the speed, the greater the risk of breakage. This problem is accentuated in multifilaire where the breakage of a wire can, as we saw above, lead to the breakage of other wires.
  • multi-wire machines are not very flexible. They are designed to draw a given number of wires with the possibility of reducing this number in a very limited interval (in practice, the composition of the wick can be reduced by a maximum of 3 to 4 wires). Therefore, even if it is possible to vary the composition of the wick, it is better not to reduce the number of yarns produced too much, as this still results in a reduction in the yield. In particular, these machines never produce one thread at a time.
  • the object of the present invention is therefore to produce a multi-wire machine having a yield and a speed close to that of single-wire machines.
  • it aims to overcome the problems of non-homogeneity of traction and oxidation of the son encountered with multi-wire machines.
  • it offers a flexible solution that can be used either as a single-strand or a multi-strand with variable strand composition, without any drop in yield.
  • the present invention provides for this purpose a multi-wire drawing device, for the manufacture of a wick of metal wires, comprising a wire drawing line per wire of said wick, means for regulating the drawing speed and the traction of said wires. , then means for coupling each of said drawn wires separately, in order to form said wick, and finally, means for uniformly distributing said wick on a main winder, characterized in that each of said drawing lines consists of a machine wire drawing machine comprising a wire drawing block, means, specific to said machine, for regulating the wire drawing speed and the traction of the wire drawn by said machine and a winding machine, and said single wire machines each further comprising a means of coupling of each of said wires drawn separately at a regulated speed and traction to the other wires in order to constitute said core he gradually rewinding uniformly on said main winder.
  • the monofilament machines are placed one after the other, and called first to last machines; the first wire drawn separately and coming from the first machine is sent, thanks to the coupling means of the first, on the coupling means of the second machine, this coupling means therefore recovering the first wire and the second drawn wire separately from the second machine, and so on up to the coupling means of the receiving machine, which collects the grouped wires from the debit machines and the last wire drawn separately from the receiving machine, the wires thus grouped constituting the wick .
  • only one of said single-wire machines, called receiving machine, is intended to receive on its winder which then constitutes the main winder, the wick, the winders of other single-wire machines, called debit machines, not being used.
  • each single-wire machine are orientable, so that each of these machines can be integrated into another multi-wire line, the wire of this machine being directed to another line of multi-wire drawing.
  • the means for regulating the drawing speed and the traction of each of the single-wire machines can be regulating jacks.
  • the main winder can be a dynamic winder.
  • the means used to distribute the wick uniformly over the main winder is a cutting pulley, the cutting pitch of which is adapted to the width of the wick in order to constitute a uniform winding.
  • the main winder is a static winder, the cutting is ensured by the winder itself, equipped with a motor allowing it to carry out a translational movement parallel to its axis, at a speed adapted to the width of the drill bit to constitute a uniform winding.
  • the son coupling means are external return pulleys each secured to one of the single-wire machines. These pulleys can be orientable and can rotate around a vertical axis tangent to their groove bottom. In addition, these pulleys can be provided, at the input and output for example, with a system for holding the wire or wires. This holding system can be a pinching system using felts, an eyelet holding system or a shell holding system surrounding the pulley and having openings allowing the wire (s) to pass.
  • each monofilament machine may further include a continuous annealer located between its drawing block and its means of regulation so that each of the wires drawn separately is further annealed separately when these continuous annealers are in operation.
  • a continuous annealer can be installed between the last machine and the main winder.
  • the wick formed can be statically annealed on the main winder.
  • FIG. 1 there is shown in front view a single-wire machine used in a device according to the invention.
  • This single-wire machine comprises a drawing block 1, an annealing device 2 and a winder 3 called a dynamic winder, that is to say that the winder 3 is provided with a motor (not shown) communicating to it a clean rotation movement around of its longitudinal axis.
  • the drawing block 1 consists of 4 stepped cones 4, 2 dies 5 and a pulley 6.
  • a wire 7 following the path shown in solid lines in the figure can pass up to 20 times in the dies 5, depending on the desired final diameter.
  • the wire 7 is directed into the annealing device 2 by means of a pulley 8.
  • a drawing capstan 9 feeds the wire 7 onto a regulating jig 10 which makes it possible to regulate the traction of wire 7 and of controlling the speed of the drawing to that of the winder 3.
  • the wire 7 is then directed by means of a return pulley 11 on a pulley 12.
  • This pulley 12 is driven in a translational movement parallel to its axis called “cutting movement", which is communicated to it by a motor 13, and which is intended to distribute the thread 7 uniformly over the entire length of the winder 3.
  • the drawing block 1 as well as the dynamic winder 3 are driven by DC motors with thyristor speed variators (not shown).
  • FIG. 2 four single-wire machines A, A ′, A ⁇ and B have been coupled of the type described in FIG. 1.
  • machines A, A ′ and A ⁇ On machines A, A ′ and A ⁇ , the winders 1A, 1A ′ and 1A ⁇ and the cutting pulleys 2A, 2A ′ and 2A ⁇ have been short-circuited (this is why they are shown in broken lines).
  • Machines A, A ′ and A ⁇ will be called in the following "debit machines”. Only the winder 1B and the cutting pulley 2B of machine B can operate. This machine will be called in the following "receiving machine”.
  • Each machine A, A ′, A ⁇ and B has a drawing and annealing block 3A, 3A ′, 3A ⁇ and 3B, a drawing capstan 4A, 4A ′, 4A ⁇ and 4B, a jig of regulation 5A, 5A ′, 5A ⁇ and 5B, an internal return pulley 6A, 6A ′, 6A ⁇ and 6B and an external return pulley with flat groove bottom 7A, 7A ′, 7A ⁇ and 7B.
  • each of the blanks is drawn separately and the wires 10A, 10A ′, 10A ⁇ and 10B thus obtained are annealed and dried also separately. Then, each of the wires 10A, 10A ′, 10A ⁇ and 10B is brought by means of the respective capstans 4A, 4A ′, 4A ⁇ and 4B to the respective control shoes 5A, 5A ′, 5A ⁇ and 5B.
  • Each of these puppets makes it possible to regulate the drawing speed and the traction of the wire.
  • wires 10A, 10A ′ and 10A ⁇ and 10B are directed respectively to the internal return pulleys 6A, 6A ′, 6A ⁇ and 6B, then to the external return pulleys 7A, 7A ′, 7A ⁇ and 7B.
  • the wire 10A is directed by the pulley 7A on the pulley 7A ′, which therefore collects both the wire 10A and the wire 10A ′.
  • the wires 10A and 10A ′ are directed by the pulley 7A ′ on the pulley 7A ⁇ , which collects the wires 10A, 10A ′ and 10A ⁇ .
  • the wires 10A, 10A ′ and 10A ⁇ are directed by the pulley 7A ⁇ on the pulley 7B which then collects the four wires 10A, 10A ′, 10A ⁇ and 10B constituting a wick 12.
  • This wick 12 is directed by the pulley 7B on the cutting pulley 2B then wound on the winder 1B.
  • the cutting speed communicated by a stepping motor (not shown) is adapted to the width of the wick 12 so that the winding takes place uniformly on the winder 1B.
  • FIG. 3 shows in detail one of the control puppets mentioned above.
  • This regulating puppet is called “light regulating puppet” and is more particularly used in the range of fine wires (diameter between 0.05 and 0.20mm). It comprises a pulley 20 secured to an arm 21 on which a mass 22 can slide, and a balancing counterweight 23.
  • a potentiometer 24, roughly represented, makes it possible to transmit the tensile stresses applied to the puppet to the wire drawing motor, in order to regulate the speed of the wire drawing (we will see in detail the operating mode of such a puppet in Figure 4).
  • the mass 22 of each of the jacks of the single-wire machines of the device of FIG. 2 is positioned on the arm 21 and fixed in an identical position for all the masses. This position determines a given pull of the wire.
  • Each puppet works in traction and speed regulation, which makes it possible to prevent the loosening of one of the wires, since all the puppets are slaved to the same reference traction determined by the initial position of the mass 22.
  • the non-zero difference ⁇ between U and U T controls, if it is greater than a threshold value ⁇ o, a speed variator 34 which makes it possible to increase the drawing speed V T up to a value such that the pull on the wire returns to its set value.
  • the reasoning is identical when the traction on the wire decreases.
  • FIG 5 there is shown the outer return pulley 7A ⁇ of the device described in Figure 2; the other external deflection pulleys are similar to this one.
  • the pulley 40 with a flat groove bottom intended to receive several wires side by side is mounted on a plate 41 secured to a frame 42 fixed to the monofilament machine A ⁇ .
  • the wires 10A and 10A ′ coming from the preceding single-wire machines A and A ′ of the device according to the invention arrive in the direction of arrow 43.
  • the wire 10A ⁇ coming from the machine A ⁇ joins the previous ones.
  • it Before arriving on the pulley 40, it passes through a braking system using felt pads 44 preventing it from deviating from its trajectory and holding it firmly to prevent any slackening.
  • the wick thus formed of the wires 10A, 10A ′ and 10A ⁇ , coming from the pulley 7A ⁇ also passes through another braking system using felts 45.
  • FIG. 6 shows in detail and in section along line VI-VI of FIG. 5 the braking system by felts 45 for example of FIG. 5. It consists of two identical felts 51 and 52.
  • the felt 51 is directly fixed (by gluing for example) to the plate 41, and the felt 52 is pinched against the felt 51 by a felt-tip pliers 53.
  • the wires 10A, 10′ and 10A ⁇ passing between the felts 51 and 52 are clamped firmly from so as to avoid a possible deviation from their trajectory.
  • FIG. 7 shows in perspective another system for holding the wire equivalent to the felt pinching system of FIG. 6.
  • two eyelets 61 and 62 are placed respectively at the input and at the output of the pulley 40 of FIG. 5.
  • the wire 10A ⁇ can only move laterally within a given interval.
  • the pulley 71 is surrounded by a cylindrical torus or "shell” 72 in which an opening 73 has been made allowing the exit of the wire 74. This opening maintains the wire in a given interval.
  • the shell 72 is provided with a "tail” 75, in the form of a hollow cylinder whose longitudinal axis X ′ is vertical and tangent to the bottom of the groove of the pulley 71. This tail 75 is fixed to a support 76 (see FIG. 9) integral with one of the single-wire machines of the device according to the invention.
  • the function of the tail 75 is on the one hand to hold the wire coming from the single-wire machine to which it is attached, and on the other hand, it can rotate around its axis X ′ in the direction of the arrow 77 or the arrow 78, carrying with it the shell 72 and the pulley 71.
  • the external pulley thus formed can operate in two modes. In a first operating mode, it is integrated into a wire drawing line according to the invention, and is therefore also intended to possibly receive wires coming from other single-wire machines. It therefore has another opening 73 ′ (see FIG. 9) similar to the opening 73 and symmetrical to the latter with respect to the vertical axis X passing through the center of the pulley 71. In a second operating mode excluding the possibility to receive other wires, this external deflection pulley pivots around the axis X ′ so that the wire coming from the single-wire machine of which it is integral is directed to another device according to the invention and coupled to the other wires drawn by this device as described in FIG. 2.
  • the multi-wire device thus produced has a yield of between 70 and 75%, regardless of the range of diameters of the wires to be obtained. Indeed, during the breakage of a wire, the re-threading is fast because it suffices to re-thread a single thread on a single-wire machine. It is also possible to keep one (or more) single-wire machine (s) in reserve with their blank already threaded. Thus, during the breakage of one (or more) wires, the device is relaunched very quickly by replacing the machine (s) whose wire is broken by the machine (s) held (s) in reserve. In addition, each wire being separated during the drawing, the breakage of one wire does not cause the breakage of the others.
  • the wire drawing speed reached is around 35 ms pour1 for the range of diameters 0.05 - 0.20 mm, while the prior art multi-wire machines did not make it possible to exceed 15 to 20 ms 1 in practice in this range .
  • the pulls of each wire are homogeneous in the wick thanks to the use of a control jig per wire. This prevents the loosening of one or more threads relative to the others.
  • each wire is annealed and dried separately before being collected by the external return pulleys.
  • the oxidation problem due to the grouped drying of the wires is avoided.
  • the device according to the invention is very flexible since it is possible to draw any number of wires by adding or removing one or more machines to the wire drawing line. This adaptation is moreover very rapid. It is also possible to work in a single wire without affecting the performance of the device. To do this, simply restart the winding of one of the single-wire machines and disconnect it from the others by removing the external return pulley.
  • the device according to the invention thus makes it possible to work in multi-wire while keeping a possibility of use in single-wire. In practice, it therefore facilitates the creation of a flexible monofilament / multifilaire workshop which makes it possible to respond quickly and easily to any request regarding the desired final product (monofilament or strand of yarns of very variable composition).
  • the device according to the invention has a major economic interest. Indeed, since the beginning of the 1980s, the use of multi-wire machines of the prior art has become very widespread, which implies an under-use of existing single-wire machines. These monofilament machines therefore risked becoming obsolete in the short term because of the technological change underway.
  • the device according to the invention therefore makes it possible to increase the duration of use and the amortization of single-wire machines. The cost price of the products obtained from the device according to the invention is then lower than with the use of multi-wire machines of the prior art.
  • the device according to the invention can consist of any number of single-wire machines coupled to each other. Only one of these machines, the last for example, will be debtor and receiver at the same time.
  • the winders of single-wire machines and in particular the winder of the receiving machine, can be "static". In this case, these winders do not have a rotational movement around their axis, and it is for example a rotating arm which brings the thread and winds it around the winder. Furthermore, the cutting is no longer ensured by a pulley, but by the translation along its axis of the winder itself.
  • the single-wire machines used may or may not be equipped with a continuous annealer.
  • the annealer causes a large number of breaks. Indeed, the copper wire produced often has ferrous inclusions for example.
  • the annealing is carried out by the Joule effect, and the ferrous inclusions are then the cause of localized heating causing the wire to break. Consequently, if the annealing is carried out for example statically, after the winding, the number of breaks decreases, which further increases the drawing speed reached and the yield of the device.
  • the continuous annealer requiring a lot of maintenance, the "machine stop" times are frequent and relatively long and the maintenance cost is high. Therefore, a device without continuous annealers makes it possible to lower the cost price of the finished product and to increase the periods of continuous use.
  • the wires can be annealed in a continuous annealer placed between the last wire drawing machine and the receiving winder.
  • the single-wire machines used may include a drawing block operating either with stepped cones or with capstans.
  • control puppets used are of any known type. In the range of diameters 0.05 - 0.20mm, it is nevertheless preferable to use "light regulating jacks" like that described in FIG. 3, while in the range of diameters 0.20 - 0.50mm, so-called “heavy” control puppets are known, which are known to the skilled person.
  • the puppet must have a low inertia so as to be able to react as quickly as possible to any variation in the drawing speed.
  • the systems for holding the wire (s) can also be installed on the internal return pulleys, to ensure an even more effective support.

Abstract

Multifilament wire-drawing apparatus for the manufacture of a wire-card of metal wires, comprising one wire-drawing line per wire of the said wire-card, means for adjusting the wire-drawing speed and the traction of the said wires, then means for coupling each of the said drawn wires separately, in order to form the said wire-card and, finally, means for uniformly distributing the said wire-card over a main coiler, characterised in that each of the wire-drawing lines consists of a monofilament wire-drawing machine (A, A', A'', B) comprising a wire-drawing unit (3A, 3A', 3A'', 3B), a means (5A, 5A', 5A'', 5B), specific to this machine, for adjusting the wire-drawing speed and the traction of the wire drawn by this machine and a coiler (1A, 1A', 1A'', 1B), only one of the monofilament machines, referred to as a receiving machine (B), being intended to receive on its coiler (1B), known as a main coiler, the wire-card (12), the coilers (1A, 1A', 1A'') of the other monofilament machines (A, A', A''), known as discharge machines, not being used, and the monofilament machines (A, A', A'', B) also each comprising a means (7A, 7A', 7A'', 7B) for coupling each of the wires (10A, 10A', 10A'', 10B) drawn separately at a speed and traction adjusted to the other wires in order to form the wire-card (12) coiling progressively, uniformly, over the main coiler (1B). <IMAGE>

Description

La présente invention a pour objet un dispositif de tréfilage multifilaire, pour produire des mèches de fils métalliques destinées en particulier à la fabrication de tresses, torons, ou tordons.The present invention relates to a multi-wire drawing device, for producing wicks of metal wires intended in particular for the manufacture of braids, strands, or twists.

Les machines de tréfilage multifilaires (ou machines multifilaires) actuelles peuvent tréfiler jusqu'à 24 fils en parallèle. Certaines de ces machines comprennnent un bloc de tréfilage constitué de plusieurs lignes de tréfilage (selon le nombre de fils à tréfiler).
Chaque ligne contient une série de filières intercalées avec des cônes à gradins solidaires d'un arbre commun. Chaque fil suit une ligne de tréfilage et passe d'une filière à l'autre au moyen d'un cône à gradins. Sa section diminue progressivement par passage d'une filière à l'autre. Tous les fils constituant une mèche sont ensuite dirigés sur un pantin de régulation puis sur un bobinoir au moyen d'une poulie de renvoi. Le pantin permet de réguler la vitesse de tréfilage et de régler la traction de la mèche ; de telles machines multifilaires peuvent tréfiler jusqu'à une dizaine de fils en parallèle. D'autres machines multifilaires différentes de celles qui viennent d'être décrites comportent des cabestans de tirage côtelés au lieu de cônes à gradins. Ceci permet de tréfiler plusieurs fils sur une même ligne, les fils étant côte à côte sur les cabestans et passant dans des filières multiples. Ce type de machines multifilaires permet de tréfiler jusqu'à 24 fils à la fois. Le diamètre final des fils obtenus grâce aux machines multifilaires est compris entre 0,05 et 0,5mm.Current multi-wire drawing machines (or multi-wire machines) can draw up to 24 wires in parallel. Some of these machines include a drawing block made up of several drawing lines (depending on the number of wires to be drawn).
Each line contains a series of dies interspersed with stepped cones secured to a common tree. Each wire follows a drawing line and passes from one die to another by means of a stepped cone. Its section gradually decreases by passing from one sector to another. All the wires constituting a wick are then directed onto a regulating jig and then onto a winder by means of a deflection pulley. The puppet makes it possible to regulate the drawing speed and to regulate the traction of the wick; such multi-wire machines can draw up to ten wires in parallel. Other multi-wire machines different from those just described include ribbed draft capstans instead of stepped cones. This makes it possible to draw several wires on the same line, the wires being side by side on the capstans and passing through multiple dies. This type of multi-wire machine allows drawing up to 24 wires at a time. The final diameter of the wires obtained with multi-wire machines is between 0.05 and 0.5mm.

Ces machines présentent de nombreux inconvénients. Tout d'abord leur rendement est inférieur à celui obtenu avec des machines monofilaires.These machines have many drawbacks. First of all, their yield is lower than that obtained with single-wire machines.

Dans la gamme des diamètres compris entre 0,05 et 0,20mm (fils fins), le rendement maximum obtenu en multifilaire est de l'ordre de 50% ; pour des diamètres compris entre 0,20 et 0,50mm (fils épais), toujours en multifilaire, il est au maximum de 65%. Les machines monofilaires ont elles, un rendement d'environ 80%. Ceci est dû aux problèmes liés à la casse des fils. En effet, lors de la casse d'un fil en monofilaire, le renfilage est effectué facilement et rapidement (en un quart d'heure environ). En revanche, la casse d'un fil en multifilaire oblige à arrêter le tréfilage pendant au moins une heure, et de plus, le renfilage est très laborieux et difficile. Ceci explique le faible rendement obtenu en multifilaire, notamment pour les fils fins qui cassent plus facilement. En outre, dans le cas des machines à cabestans côtelés, la casse d'un fil peut entraîner la casse d'autres fils, ce qui implique encore une baisse de rendement.In the range of diameters between 0.05 and 0.20mm (fine wires), the maximum yield obtained in multi-wire is of the order of 50%; for diameters between 0.20 and 0.50mm (thick wires), always in multi-wire, it is at most 65%. Single wire machines have an efficiency of around 80%. This is due to problems with the breakage of the wires. Indeed, during the breakage of a monofilament yarn, re-threading is carried out easily and quickly (in about a quarter of an hour). On the other hand, the breakage of a multifilament wire requires to stop the drawing for at least one hour, and moreover, the re-threading is very laborious and difficult. This explains the low yield obtained in multi-wire, in particular for fine wires which break more easily. In addition, in the case of ribbed capstan machines, the breakage of one thread can cause the breakage of other threads, which again implies a reduction in output.

Par ailleurs, les vitesses sont limitées en multifilaire ; en pratique, la vitesse maximum est de l'ordre de 30ms⁻¹, et de 15ms⁻¹ en particulier pour les fils fins alors qu'on atteint 35 à 50ms⁻¹ en monofilaire. Ceci est également dû à la casse des fils. Plus la vitesse est grande, plus il y a de risques de casses. Ce problème est accentué en multifilaire où la casse d'un fil peut, comme on l'a vu plus haut, entraîner la casse d'autres fils.In addition, the speeds are limited in multi-wire; in practice, the maximum speed is around 30ms⁻¹, and 15ms⁻¹ in particular for fine wires, while reaching 35 to 50ms⁻¹ in single wire. This is also due to the breakage of the wires. The higher the speed, the greater the risk of breakage. This problem is accentuated in multifilaire where the breakage of a wire can, as we saw above, lead to the breakage of other wires.

Un autre inconvénient majeur des machines multifilaires provient du relâchement des fils. En effet, un seul pantin de régulation (appelé pantin groupé) régule la vitesse du tréfilage et la traction de la mèche de fils. Il peut donc arriver qu'un ou plusieurs fils se relâchent dans la mèche ; cette non-homogénéité de la traction empêche le bon fonctionnement du bobinage.Another major drawback of multi-wire machines comes from the loosening of the wires. Indeed, a single regulating puppet (called grouped puppet) regulates the speed of the drawing and the traction of the strand of wire. It can therefore happen that one or more threads slacken in the wick; this non-homogeneity of the traction prevents the proper functioning of the winding.

D'autre part, dans une machine multifilaire-munie d'un recuiseur continu, les fils étant groupés pour être séchés et donc très proches les uns des autres, le jet d'air utilisé par exemple, n'est pas suffisant pour faire évaporer l'eau située entre deux fils. Ceci entraîne une rétention d'eau au niveau de la mèche, et donc une oxydation des fils.On the other hand, in a multi-wire machine-provided with a continuous annealer, the wires being grouped to be dried and therefore very close to each other, the air jet used for example, is not sufficient to evaporate the water between two wires. This results in water retention at the level of the wick, and therefore oxidation of the wires.

Enfin, les machines multifilaires sont peu flexibles. Elles sont prévues pour tréfiler un nombre donné de fils avec possibilité de réduire ce nombre dans un intervalle très limité (en pratique, on peut réduire de 3 à 4 fils au maximum la composition de la mèche). Par conséquent, même s'il est possible de faire varier la composition de la mèche, il vaut mieux ne pas trop réduire le nombre de fils produits, car cela entraîne encore une diminution du rendement. En particulier, ces machines ne produisent jamais un fil à la fois.Finally, multi-wire machines are not very flexible. They are designed to draw a given number of wires with the possibility of reducing this number in a very limited interval (in practice, the composition of the wick can be reduced by a maximum of 3 to 4 wires). Therefore, even if it is possible to vary the composition of the wick, it is better not to reduce the number of yarns produced too much, as this still results in a reduction in the yield. In particular, these machines never produce one thread at a time.

La présente invention a donc pour objet de réaliser une machine multifilaire ayant un rendement et une vitesse proches de ceux des machines monofilaires. En outre, elle a pour but de pallier les problèmes de non-homogénéité de traction et d'oxydation des fils rencontrés avec les machines multifilaires. Enfin, elle propose une solution flexible utilisable soit en monofilaire, soit en multifilaire à composition de mèches variables, sans baisse de rendement.The object of the present invention is therefore to produce a multi-wire machine having a yield and a speed close to that of single-wire machines. In addition, it aims to overcome the problems of non-homogeneity of traction and oxidation of the son encountered with multi-wire machines. Finally, it offers a flexible solution that can be used either as a single-strand or a multi-strand with variable strand composition, without any drop in yield.

La présente invention propose à cet effet un dispositif de tréfilage multifilaire, pour la fabrication d'une mèche de fils métalliques, comprenant une ligne de tréfilage par fil de ladite mèche, des moyens de régulation de la vitesse de tréfilage et de la traction desdits fils, puis des moyens d'accouplement de chacun desdits fils tréfilés séparément, afin de former ladite mèche, et enfin, des moyens pour répartir uniformément ladite mèche sur un bobinoir principal, caractérisé en ce que chacune desdites lignes de tréfilage est constituée d'une machine à tréfiler monofilaire comprenant un bloc de tréfilage, un moyen, propre à ladite machine, de régulation de la vitesse de tréfilage et de la traction du fil tréfilé par ladite machine et un bobinoir, et lesdites machines monofilaires comportant en outre chacune un moyen d'accouplement de chacun desdits fils tréfilé séparément à vitesse et traction régulées aux autres fils afin de constituer ladite mèche s'embobinant au fur et à mesure uniformément sur ledit bobinoir principal.The present invention provides for this purpose a multi-wire drawing device, for the manufacture of a wick of metal wires, comprising a wire drawing line per wire of said wick, means for regulating the drawing speed and the traction of said wires. , then means for coupling each of said drawn wires separately, in order to form said wick, and finally, means for uniformly distributing said wick on a main winder, characterized in that each of said drawing lines consists of a machine wire drawing machine comprising a wire drawing block, means, specific to said machine, for regulating the wire drawing speed and the traction of the wire drawn by said machine and a winding machine, and said single wire machines each further comprising a means of coupling of each of said wires drawn separately at a regulated speed and traction to the other wires in order to constitute said core he gradually rewinding uniformly on said main winder.

Selon un mode de fonctionnement possible, les machines monofilaires sont placées les unes à la suite des autres, et appelées première à dernière machines ; le premier fil tréfilé séparément et issu de la première machine est envoyé, grâce au moyen d'accouplement de la première, sur le moyen d'accouplement de la seconde machine, ce moyen d'accouplement récupérant donc le premier fil et le second fil tréfilé séparément issu de la seconde machine, et ainsi de suite jusqu'au moyen d'accouplement de la machine réceptrice, qui récupère les fils regroupés des machines débitrices et le dernier fil tréfilé séparément issu de la machine réceptrice, les fils ainsi regroupés constituant la mèche.According to a possible operating mode, the monofilament machines are placed one after the other, and called first to last machines; the first wire drawn separately and coming from the first machine is sent, thanks to the coupling means of the first, on the coupling means of the second machine, this coupling means therefore recovering the first wire and the second drawn wire separately from the second machine, and so on up to the coupling means of the receiving machine, which collects the grouped wires from the debit machines and the last wire drawn separately from the receiving machine, the wires thus grouped constituting the wick .

Avantageusement, une seulement desdites machines monofilaires, appelée machine réceptrice, est destinée à recevoir sur son bobinoir qui constitue alors le bobinoir principal, la mèche, les bobinoirs des autres machines monofilaires, dites machines débitrices, n'étant pas utilisés.Advantageously, only one of said single-wire machines, called receiving machine, is intended to receive on its winder which then constitutes the main winder, the wick, the winders of other single-wire machines, called debit machines, not being used.

Selon une caractéristique importante, les moyens d'accouplement de chaque machine monofilaire sont orientables, de manière à ce que chacune de ces machines puisse être intégrée à une autre ligne multifilaire, le fil de cette machine étant dirigé vers une autre ligne de tréfilage multifilaire.According to an important characteristic, the coupling means of each single-wire machine are orientable, so that each of these machines can be integrated into another multi-wire line, the wire of this machine being directed to another line of multi-wire drawing.

D'autre part, les moyens de régulation de la vitesse de tréfilage et de la traction de chacune des machines monofilaires peuvent être des pantins de régulation. On prendra de préférence des pantins de régulation légers pour la gamme de diamètres compris entre 0,05 et 0,20mm, et des pantins de régulation lourds pour la gamme 0,20-0,50mm.On the other hand, the means for regulating the drawing speed and the traction of each of the single-wire machines can be regulating jacks. We will preferably take light control jacks for the range of diameters between 0.05 and 0.20mm, and heavy control jacks for the range 0.20-0.50mm.

Le bobinoir principal peut être un bobinoir dynamique. Dans ce cas, le moyen utilisé pour répartir la mèche uniformément sur le bobinoir principal est une poulie de trancanage dont le pas de trancanage est adapté à la largeur de la mèche afin de constituer un bobinage uniforme. Si le bobinoir principal est un bobinoir statique, le trancanage est assuré par le bobinoir lui-même, muni d'un moteur lui permettant d'effectuer un mouvement de translation parallèle à son axe, à une vitesse adaptée à la largeur de la mèche afin de constituer un bobinage uniforme.The main winder can be a dynamic winder. In this case, the means used to distribute the wick uniformly over the main winder is a cutting pulley, the cutting pitch of which is adapted to the width of the wick in order to constitute a uniform winding. If the main winder is a static winder, the cutting is ensured by the winder itself, equipped with a motor allowing it to carry out a translational movement parallel to its axis, at a speed adapted to the width of the drill bit to constitute a uniform winding.

Selon une autre caractéristique, les moyens d'accouplement des fils sont des poulies de renvoi extérieures solidaires chacune d'une des machines monofilaires. Ces poulies peuvent être orientables et peuvent tourner autour d'un axe vertical tangent à leur fond de gorge. En outre, ces poulies peuvent être munies, en entrée et en sortie par exemple, d'un système de maintien du ou des fils. Ce système de maintien peut être un système de pincement par feutres, un système de maintien par oeillets ou un système de maintien par coquille entourant la poulie et présentant des ouvertures laissant passer le ou les fils.According to another characteristic, the son coupling means are external return pulleys each secured to one of the single-wire machines. These pulleys can be orientable and can rotate around a vertical axis tangent to their groove bottom. In addition, these pulleys can be provided, at the input and output for example, with a system for holding the wire or wires. This holding system can be a pinching system using felts, an eyelet holding system or a shell holding system surrounding the pulley and having openings allowing the wire (s) to pass.

Enfin, chaque machine monofilaire peut comporter, en outre, un recuiseur continu situé entre son bloc de tréfilage et son moyen de régulation de sorte que chacun des fils tréfilés séparément est en outre recuit séparément lorsque ces recuiseurs continus sont en fonctionnement.Finally, each monofilament machine may further include a continuous annealer located between its drawing block and its means of regulation so that each of the wires drawn separately is further annealed separately when these continuous annealers are in operation.

Selon une autre possibilité, un recuiseur continu peut être installé entre la dernière machine et le bobinoir principal.Alternatively, a continuous annealer can be installed between the last machine and the main winder.

Sinon, la mèche formée peut être recuite de manière statique sur le bobinoir principal.Otherwise, the wick formed can be statically annealed on the main winder.

Grâce à un dispositif selon l'invention, on peut produire des mèches de fils exemptes d'oxydation. Ces mèches peuvent être utilisées :

  • pour fabriquer des torons ou des tordons utilisables dans la confection de cordons conducteurs souples isolés ou non ;
  • pour fabriquer des tresses utilisables pour le blindage en câblerie.
Thanks to a device according to the invention, it is possible to produce strands of threads free of oxidation. These wicks can be used:
  • to manufacture strands or twists usable in the manufacture of flexible conductive cords insulated or not;
  • to make braids that can be used for shielding in cables.

Des caractéristiques et avantages de la présente invention apparaitront au cours de la description suivante d'un mode de mise en oeuvre du dispositif selon l'invention, donnée à titre illustratif et nullement limitatif.Characteristics and advantages of the present invention will appear during the following description of an embodiment of the device according to the invention, given by way of illustration and in no way limitative.

Dans cette description :

  • la figure 1 illustre une machine monofilaire utilisée dans un dispositif selon l'invention,
  • la figure 2 représente le schéma de fonctionnement d'un dispositif selon l'invention,
  • la figure 3 montre en vue de côté un pantin de régulation utilisé dans le dispositif selon l'invention,
  • la figure 4 représente schématiquement par blocs la chaîne de régulation de la traction du fil et de la vitesse de tréfilage d'une machine monofilaire utilisée dans le dispositif selon l'invention.
  • la figure 5 illustre une poulie de renvoi extérieure du dispositif présenté à la figure 1,
  • la figure 6 illustre en coupe un système de maintien du ou des fils sur la poulie de renvoi illustrée à la figure 5,
  • la figure 7 illustre en perspective un autre système de maintien du ou des fils que celui de la figure 6,
  • la figure 8 illustre en perspective une poulie de renvoi extérieure orientable, et munie d'un système de maintien du ou des fils encore différent de ceux illustrés aux figures 6 et 7,
  • la figure 9 illustre en coupe une variante de la poulie représentée à la figure 8.
In this description:
  • FIG. 1 illustrates a single-wire machine used in a device according to the invention,
  • FIG. 2 represents the operating diagram of a device according to the invention,
  • FIG. 3 shows a side view of a regulating jig used in the device according to the invention,
  • FIG. 4 diagrammatically shows by blocks the chain for regulating the traction of the wire and the drawing speed of a single-wire machine used in the device according to the invention.
  • FIG. 5 illustrates an external deflection pulley of the device presented in FIG. 1,
  • FIG. 6 illustrates in section a system for holding the wire (s) on the deflection pulley illustrated in FIG. 5,
  • FIG. 7 illustrates in perspective another system for holding the wire (s) than that of FIG. 6,
  • FIG. 8 illustrates in perspective an orientable external deflection pulley, and provided with a system for holding the wire (s) still different from those illustrated in Figures 6 and 7,
  • FIG. 9 illustrates in section a variant of the pulley shown in FIG. 8.

Dans la figure 1, on a représenté en vue de face une machine monofilaire utilisée dans un dispositif selon l'invention. Cette machine monofilaire comprend un bloc de tréfilage 1, un recuiseur 2 et un bobinoir 3 dit bobinoir dynamique, c'est-à-dire que le bobinoir 3 est muni d'un moteur (non représenté) lui communiquant un mouvement de rotation propre autour de son axe longitudinal.In Figure 1, there is shown in front view a single-wire machine used in a device according to the invention. This single-wire machine comprises a drawing block 1, an annealing device 2 and a winder 3 called a dynamic winder, that is to say that the winder 3 is provided with a motor (not shown) communicating to it a clean rotation movement around of its longitudinal axis.

Le bloc de tréfilage 1 est constitué de 4 cônes à gradins 4, de 2 filières 5 et d'une poulie 6. Un fil 7 suivant le trajet représenté en trait continu sur la figure peut passer jusqu'à 20 fois dans les filières 5, selon le diamètre final désiré. Puis, le fil 7 est dirigé dans le recuiseur 2 par l'intermédiaire d'une poulie 8. Enfin, en sortie du recuiseur 2, un cabestan de tirage 9 amène le fil 7 sur un pantin de régulation 10 qui permet de réguler la traction du fil 7 et d'asservir la vitesse du tréfilage à celle du bobinoir 3. Le fil 7 est ensuite dirigé grâce à une poulie de renvoi 11 sur une poulie 12. Cette poulie 12 est animée d'un mouvement de translation parallèle à son axe dit "mouvement de trancanage", qui lui est communiqué par un moteur 13, et qui est destiné à répartir uniformément le fil 7 sur toute la longueur du bobinoir 3.The drawing block 1 consists of 4 stepped cones 4, 2 dies 5 and a pulley 6. A wire 7 following the path shown in solid lines in the figure can pass up to 20 times in the dies 5, depending on the desired final diameter. Then, the wire 7 is directed into the annealing device 2 by means of a pulley 8. Finally, at the outlet of the annealing device 2, a drawing capstan 9 feeds the wire 7 onto a regulating jig 10 which makes it possible to regulate the traction of wire 7 and of controlling the speed of the drawing to that of the winder 3. The wire 7 is then directed by means of a return pulley 11 on a pulley 12. This pulley 12 is driven in a translational movement parallel to its axis called "cutting movement", which is communicated to it by a motor 13, and which is intended to distribute the thread 7 uniformly over the entire length of the winder 3.

Le bloc de tréfilage 1 ainsi que le bobinoir dynamique 3 sont entraînés par des moteurs à courant continu avec variateurs de vitesse à thyristors (non représentés).The drawing block 1 as well as the dynamic winder 3 are driven by DC motors with thyristor speed variators (not shown).

Dans la figure 2, on a accouplé quatre machines monofilaires A, A′, A˝ et B du type de celle décrite à la figure 1. Sur les machines A, A′ et A˝, les bobinoirs 1A, 1A′ et 1A˝ et les poulies de trancanage 2A, 2A′ et 2A˝ ont été court-circuités (c'est pourquoi ils sont représentés en trait discontinu). Les machines A, A′ et A˝ seront appelées dans la suite "machines débitrices". Seuls le bobinoir 1B et la poulie de trancanage 2B de la machine B peuvent fonctionner. Cette machine sera appelée dans la suite "machine réceptrice". Chaque machine A, A′, A˝ et B possède un bloc de tréfilage et de recuit 3A, 3A′, 3A˝ et 3B, un cabestan de tirage 4A, 4A′, 4A˝ et 4B, un pantin de régulation 5A, 5A′, 5A˝ et 5B, une poulie de renvoi intérieure 6A, 6A′, 6A˝ et 6B et une poulie de renvoi extérieure à fond de gorge plat 7A, 7A′, 7A˝ et 7B.In FIG. 2, four single-wire machines A, A ′, A˝ and B have been coupled of the type described in FIG. 1. On machines A, A ′ and A˝, the winders 1A, 1A ′ and 1A˝ and the cutting pulleys 2A, 2A ′ and 2A˝ have been short-circuited (this is why they are shown in broken lines). Machines A, A ′ and A˝ will be called in the following "debit machines". Only the winder 1B and the cutting pulley 2B of machine B can operate. This machine will be called in the following "receiving machine". Each machine A, A ′, A˝ and B has a drawing and annealing block 3A, 3A ′, 3A˝ and 3B, a drawing capstan 4A, 4A ′, 4A˝ and 4B, a jig of regulation 5A, 5A ′, 5A˝ and 5B, an internal return pulley 6A, 6A ′, 6A˝ and 6B and an external return pulley with flat groove bottom 7A, 7A ′, 7A˝ and 7B.

Lors du fonctionnement du dispositif, quatre ébauches (non représentées) sont introduites respectivement à l'entrée indiquée par les flèches 11A, 11A′, 11A˝ et 11B des machines A, A′, A˝ et B. Chacune des ébauches est tréfilée séparément et les fils 10A, 10A′, 10A˝et 10B ainsi obtenus sont recuits et séchés également séparément. Puis, chacun des fils 10A, 10A′, 10A˝ et 10B est amené au moyen des cabestans respectifs 4A, 4A′, 4A˝ et 4B sur les pantins de régulation respectifs 5A, 5A′, 5A˝ et 5B. Chacun de ces pantins permet de réguler la vitesse de tréfilage et la traction du fil. Ensuite, les fils 10A, 10A′ et 10A˝ et 10B sont dirigés respectivement sur les poulies de renvoi intérieures 6A, 6A′, 6A˝ et 6B, puis sur les poulies de renvoi extérieures 7A, 7A′, 7A˝ et 7B.During the operation of the device, four blanks (not shown) are introduced respectively at the entry indicated by the arrows 11A, 11A ′, 11A˝ and 11B of the machines A, A ′, A˝ and B. Each of the blanks is drawn separately and the wires 10A, 10A ′, 10A˝ and 10B thus obtained are annealed and dried also separately. Then, each of the wires 10A, 10A ′, 10A˝ and 10B is brought by means of the respective capstans 4A, 4A ′, 4A˝ and 4B to the respective control shoes 5A, 5A ′, 5A˝ and 5B. Each of these puppets makes it possible to regulate the drawing speed and the traction of the wire. Then, the wires 10A, 10A ′ and 10A˝ and 10B are directed respectively to the internal return pulleys 6A, 6A ′, 6A˝ and 6B, then to the external return pulleys 7A, 7A ′, 7A˝ and 7B.

Ces poulies de renvoi extérieures ont été fixées sur les machines initiales A, A′, A˝ et B. Le fil 10A est dirigé par la poulie 7A sur la poulie 7A′, qui collecte donc à la fois le fil 10A et le fil 10A′. Les fils 10A et 10A′ sont dirigés par la poulie 7A′ sur la poulie 7A˝, qui collecte les fils 10A, 10A′ et 10A˝. Enfin, les fils 10A, 10A′ et 10A˝ sont dirigés par la poulie 7A˝ sur la poulie 7B qui collecte alors les quatre fils 10A, 10A′, 10A˝ et 10B constituant une mèche 12. Cette mèche 12 est dirigée par la poulie 7B sur la poulie de trancanage 2B puis bobinée sur le bobinoir 1B. La vitesse de trancanage communiquée par un moteur pas à pas (non représenté) est adaptée à la largeur de la mèche 12 de manière à ce que le bobinage se fasse de manière uniforme sur le bobinoir 1B.These external deflection pulleys were fixed on the initial machines A, A ′, A˝ and B. The wire 10A is directed by the pulley 7A on the pulley 7A ′, which therefore collects both the wire 10A and the wire 10A ′. The wires 10A and 10A ′ are directed by the pulley 7A ′ on the pulley 7A˝, which collects the wires 10A, 10A ′ and 10A˝. Finally, the wires 10A, 10A ′ and 10A˝ are directed by the pulley 7A˝ on the pulley 7B which then collects the four wires 10A, 10A ′, 10A˝ and 10B constituting a wick 12. This wick 12 is directed by the pulley 7B on the cutting pulley 2B then wound on the winder 1B. The cutting speed communicated by a stepping motor (not shown) is adapted to the width of the wick 12 so that the winding takes place uniformly on the winder 1B.

La figure 3 représente en détail un des pantins de régulation mentionnés ci-dessus.Figure 3 shows in detail one of the control puppets mentioned above.

Ce pantin de régulation est appelé "pantin de régulation léger" et est plus particulièrement utilisé dans la gamme des fils fins (diamètre compris entre 0,05 et 0,20mm). Il comporte une poulie 20 solidaire d'un bras 21 sur lequel une masse 22 peut coulisser, et un contre-poids d'équilibrage 23. Un potentiomètre 24, représenté grossièrement, permet de transmettre les sollicitations en traction appliquées au pantin au moteur de tréfilage, afin de réguler la vitesse du tréfilage (on verra en détail le mode de fonctionnement d'un tel pantin à la figure 4). Avant le démarrage du tréfilage, la masse 22 de chacun des pantins des machines monofilaires du dispositif de la figure 2 est positionnée sur le bras 21 et fixée dans une position identique pour toutes les masses. Cette position détermine une traction donnée du fil.This regulating puppet is called "light regulating puppet" and is more particularly used in the range of fine wires (diameter between 0.05 and 0.20mm). It comprises a pulley 20 secured to an arm 21 on which a mass 22 can slide, and a balancing counterweight 23. A potentiometer 24, roughly represented, makes it possible to transmit the tensile stresses applied to the puppet to the wire drawing motor, in order to regulate the speed of the wire drawing (we will see in detail the operating mode of such a puppet in Figure 4). Before starting the drawing, the mass 22 of each of the jacks of the single-wire machines of the device of FIG. 2 is positioned on the arm 21 and fixed in an identical position for all the masses. This position determines a given pull of the wire.

Chaque pantin travaille en régulation de traction et de vitesse, ce qui permet d'empêcher le relâchement d'un des fils, puisque tous les pantins sont asservis à une même traction de référence déterminée par la position initiale de la masse 22.Each puppet works in traction and speed regulation, which makes it possible to prevent the loosening of one of the wires, since all the puppets are slaved to the same reference traction determined by the initial position of the mass 22.

Lorsque la traction sur le fil augmente, par exemple à cause d'une augmentation de vitesse liée à une montée en régime ou à une variation de diamètre sur la bobine, la poulie du pantin monte vers le haut dans la figure 2. Alors, la position angulaire du bras du pantin change. Le potentiomètre 30 (voir figure 4) lié au pantin transmet cette variation de position angulaire à un régulateur 31 du type proportionnel-intégral, qui, après intégration transforme cette donnée en une tension U proportionnelle à une vitesse. La tension U est ensuite comparée par le comparateur C à une tension UT proportionnelle à la vitesse VT du moteur de la tréfileuse 32 (une dynamo-tachymétrique 33 permet la transformation de la vitesse VT en un signal équivalent à une tension :UT). En sortie du comparateur C, la différence ε non nulle entre U et UT commande, si elle est supérieure à une valeur seuil ε o, un variateur de vitesse 34 qui permet d'augmenter la vitesse de tréfilage VT jusqu'à une valeur telle que la traction sur le fil revienne à sa valeur de consigne.When the traction on the wire increases, for example because of an increase in speed linked to a rise in speed or to a variation of diameter on the reel, the pulley of the puppet rises upwards in figure 2. Then, the angular position of the arm of the puppet changes. The potentiometer 30 (see FIG. 4) linked to the puppet transmits this variation in angular position to a regulator 31 of the proportional-integral type, which, after integration transforms this data into a voltage U proportional to a speed. The voltage U is then compared by the comparator C to a voltage U T proportional to the speed V T of the motor of the drawing machine 32 (a dynamo-tachymeter 33 allows the transformation of the speed V T into a signal equivalent to a voltage: U T ). At the output of comparator C, the non-zero difference ε between U and U T controls, if it is greater than a threshold value ε o, a speed variator 34 which makes it possible to increase the drawing speed V T up to a value such that the pull on the wire returns to its set value.

Le raisonnement est identique lorsque la traction sur le fil diminue.The reasoning is identical when the traction on the wire decreases.

Dans la figure 5 on a représenté la poulie de renvoi extérieure 7A˝ du dispositif décrit à la figure 2 ; les autres poulies de renvoi extérieures sont similaires à celle-ci. La poulie 40 à fond de gorge plat destiné à recevoir plusieurs fils côte à côte est montée sur une plaque 41 solidaire d'un bâti 42 fixé à la machine monofilaire A˝. Les fils 10A et 10A′ provenant des machines monofilaires précédentes A et A′ du dispositif selon l'invention arrivent dans le sens de la flèche 43. Le fil 10A˝ provenant de la machine A˝ vient se joindre aux précédents. Avant d'arriver sur la poulie 40, il passe par un système de freinage par feutres 44 lui évitant de dévier de sa trajectoire et le maintenant fermement pour empêcher tout relâchement. La mèche ainsi formée des fils 10A, 10A′ et 10A˝, issue de la poulie 7A˝ passe également par un autre système de freinage par feutres 45.In Figure 5 there is shown the outer return pulley 7A˝ of the device described in Figure 2; the other external deflection pulleys are similar to this one. The pulley 40 with a flat groove bottom intended to receive several wires side by side is mounted on a plate 41 secured to a frame 42 fixed to the monofilament machine A˝. The wires 10A and 10A ′ coming from the preceding single-wire machines A and A ′ of the device according to the invention arrive in the direction of arrow 43. The wire 10A˝ coming from the machine A˝ joins the previous ones. Before arriving on the pulley 40, it passes through a braking system using felt pads 44 preventing it from deviating from its trajectory and holding it firmly to prevent any slackening. The wick thus formed of the wires 10A, 10A ′ and 10A˝, coming from the pulley 7A˝ also passes through another braking system using felts 45.

La figure 6 montre en détail et en coupe selon la ligne VI-VI de la figure 5 le système de freinage par feutres 45 par exemple de la figure 5. Il est constitué de deux feutres identiques 51 et 52. Le feutre 51 est directement fixé (par collage par exemple) à la plaque 41, et le feutre 52 est pincé contre le feutre 51 par un pince-feutres 53. Ainsi, les fils 10A, 10′et 10A˝ passant entre les feutres 51 et 52 sont pincés fermement de manière à éviter une éventuelle déviation de leur trajectoire.FIG. 6 shows in detail and in section along line VI-VI of FIG. 5 the braking system by felts 45 for example of FIG. 5. It consists of two identical felts 51 and 52. The felt 51 is directly fixed (by gluing for example) to the plate 41, and the felt 52 is pinched against the felt 51 by a felt-tip pliers 53. Thus, the wires 10A, 10′ and 10A˝ passing between the felts 51 and 52 are clamped firmly from so as to avoid a possible deviation from their trajectory.

La figure 7 montre en perspective un autre système de maintien du fil équivalent au système de pincement par feutres de la figure 6. Ici, deux oeillets 61 et 62 sont placés respectivement en entrée et en sortie de la poulie 40 de la figure 5. Ainsi, le fil 10A˝ ne peut bouger latéralement que dans un intervalle donné.FIG. 7 shows in perspective another system for holding the wire equivalent to the felt pinching system of FIG. 6. Here, two eyelets 61 and 62 are placed respectively at the input and at the output of the pulley 40 of FIG. 5. Thus , the wire 10A˝ can only move laterally within a given interval.

Dans la figure 8, la poulie 71 est entourée d'un tore cylindrique ou "coquille" 72 dans lequel on a pratiqué une ouverture 73 permettant la sortie du fil 74. Cette ouverture maintient le fil dans un intervalle donné. D'autre part, la coquille 72 est munie d'une "queue" 75, sous forme de cylindre creux dont l'axe longitudinal X′ est vertical et tangent au fond de gorge de la poulie 71. Cette queue 75 est fixée à un support 76 (voir figure 9) solidaire d'une des machines monofilaires du dispositif selon l'invention. La queue 75 a pour fonction d'une part de maintenir le fil venant de la machine monofilaire à laquelle elle est attenante, et d'autre part, elle peut tourner autour de son axe X′ dans le sens de la flèche 77 ou de la flèche 78, entraînant avec elle la coquille 72 et la poulie 71.In FIG. 8, the pulley 71 is surrounded by a cylindrical torus or "shell" 72 in which an opening 73 has been made allowing the exit of the wire 74. This opening maintains the wire in a given interval. On the other hand, the shell 72 is provided with a "tail" 75, in the form of a hollow cylinder whose longitudinal axis X ′ is vertical and tangent to the bottom of the groove of the pulley 71. This tail 75 is fixed to a support 76 (see FIG. 9) integral with one of the single-wire machines of the device according to the invention. The function of the tail 75 is on the one hand to hold the wire coming from the single-wire machine to which it is attached, and on the other hand, it can rotate around its axis X ′ in the direction of the arrow 77 or the arrow 78, carrying with it the shell 72 and the pulley 71.

La poulie de renvoi extérieure ainsi constituée peut fonctionner selon deux modes. Dans un premier mode de fonctionnement, elle est intégrée dans une ligne de tréfilage selon l'invention, et est donc également destinée à recevoir éventuellement des fils venant d'autres machines monofilaires. Elle présente donc une autre ouverture 73′ (voir figure 9) similiaire à l'ouverture 73 et symétrique à cette dernière par rapport à l'axe X vertical passant par le centre de la poulie 71. Dans un second mode de fonctionnement excluant la possibilité de recevoir d'autres fils, cette poulie de renvoi extérieure pivote autour de l'axe X′ pour que le fil issu de la machine monofilaire dont elle est solidaire soit dirigé vers un autre dispositif selon l'invention et accouplé aux autres fils tréfilés par ce dispositif comme cela a été décrit à la figure 2.The external pulley thus formed can operate in two modes. In a first operating mode, it is integrated into a wire drawing line according to the invention, and is therefore also intended to possibly receive wires coming from other single-wire machines. It therefore has another opening 73 ′ (see FIG. 9) similar to the opening 73 and symmetrical to the latter with respect to the vertical axis X passing through the center of the pulley 71. In a second operating mode excluding the possibility to receive other wires, this external deflection pulley pivots around the axis X ′ so that the wire coming from the single-wire machine of which it is integral is directed to another device according to the invention and coupled to the other wires drawn by this device as described in FIG. 2.

On peut ainsi faire varier très facilement la composition de la mèche finale.It is thus very easy to vary the composition of the final lock.

Le dispositif multifilaire ainsi réalisé a un rendement compris entre 70 et 75% et ce quelle que soit la gamme de diamètres des fils à obtenir. En effet, lors de la casse d'un fil, le renfilage est rapide car il suffit de renfiler un seul fil sur une machine monofilaire. Il est également possible de tenir une (ou plusieurs) machine(s) monofilaire(s) en réserve avec leur ébauche déjà enfilée. Ainsi, lors de la casse d'un (ou plusieurs) fils, on relance très rapidement le dispositif en remplaçant la (ou les) machine(s) dont le fil s'est cassé par la (ou les) machine(s) tenue(s) en réserve. En outre, chaque fil étant séparé pendant le tréfilage, la casse d'un fil n'entraîne pas la casse des autres.The multi-wire device thus produced has a yield of between 70 and 75%, regardless of the range of diameters of the wires to be obtained. Indeed, during the breakage of a wire, the re-threading is fast because it suffices to re-thread a single thread on a single-wire machine. It is also possible to keep one (or more) single-wire machine (s) in reserve with their blank already threaded. Thus, during the breakage of one (or more) wires, the device is relaunched very quickly by replacing the machine (s) whose wire is broken by the machine (s) held (s) in reserve. In addition, each wire being separated during the drawing, the breakage of one wire does not cause the breakage of the others.

La vitesse de tréfilage atteinte est d'environ 35ms⁻¹ pour la gamme de diamètres 0,05 - 0,20mm, alors que les machines multifilaires de l'art antérieur ne permettaient pas de dépasser 15 à 20ms⁻¹ en pratique dans cette gamme.The wire drawing speed reached is around 35 ms pour¹ for the range of diameters 0.05 - 0.20 mm, while the prior art multi-wire machines did not make it possible to exceed 15 to 20 ms ¹ in practice in this range .

D'autre part, les tractions de chaque fil sont homogènes dans la mèche grâce à l'utilisation d'un pantin de régulation par fil. Ceci empêche le relâchement d'un ou plusieurs fils par rapport aux autres.On the other hand, the pulls of each wire are homogeneous in the wick thanks to the use of a control jig per wire. This prevents the loosening of one or more threads relative to the others.

Outre la grande maîtrise des vitesses de tréfilage et des tractions de fil apportées par l'utilisation de régulateurs comme les pantins de régulation, ces derniers permettent un enfilage ou renfilage très facile. En effet, à la moindre sollicitation en traction du fil à enfiler, par exemple, le pantin réagit immédiatement par l'intermédiaire de son potentiomètre qui excite le moteur du bloc de tréfilage. L'enfilage (ou le renfilage) est donc effectué simplement et rapidement.In addition to the great control of the drawing speeds and the pulls of wire brought by the use of regulators like the control jacks, the latter allow a very easy threading or re-threading. Indeed, at the slightest tensile stress of the thread to be threaded, for example, the puppet reacts immediately by means of its potentiometer which excites the motor of the drawing block. Threading (or re-threading) is therefore carried out simply and quickly.

De manière avantageuse, chaque fil est recuit et séché séparément avant d'être collecté par les poulies de renvoi extérieures. Ainsi, le problème d'oxydation dû au séchage groupé des fils est évité.Advantageously, each wire is annealed and dried separately before being collected by the external return pulleys. Thus, the oxidation problem due to the grouped drying of the wires is avoided.

Enfin, le dispositif selon l'invention est très flexible puisque l'on peut tréfiler un nombre de fils quelconque en ajoutant ou en retirant une ou plusieurs machines à la ligne de tréfilage. Cette adaptation est de plus très rapide. Il est en outre possible de travailler en monofilaire sans affecter le rendement du dispositif. Il suffit pour cela de remettre en marche le bobinage d'une des machines monofilaires et de la désaccoupler des autres en supprimant la poulie de renvoi extérieure.Finally, the device according to the invention is very flexible since it is possible to draw any number of wires by adding or removing one or more machines to the wire drawing line. This adaptation is moreover very rapid. It is also possible to work in a single wire without affecting the performance of the device. To do this, simply restart the winding of one of the single-wire machines and disconnect it from the others by removing the external return pulley.

Le dispositif selon l'invention permet ainsi de travailler en multifilaire tout en gardant une possibilité d'utilisation en monofilaire. En pratique, il facilite donc la création d'un atelier flexible monofilaire/multifilaire qui permet de répondre facilement et rapidement à toute demande en ce qui concerne le produit final désiré (monofilaire ou mèche de fils de composition très variable).The device according to the invention thus makes it possible to work in multi-wire while keeping a possibility of use in single-wire. In practice, it therefore facilitates the creation of a flexible monofilament / multifilaire workshop which makes it possible to respond quickly and easily to any request regarding the desired final product (monofilament or strand of yarns of very variable composition).

Outre les avantages mentionnés ci-dessus, le dispositif selon l'invention présente un intérêt économique majeur. En effet, depuis le début des années 1980, l'usage des machines multifilaires de l'art antérieur s'est très largement répandu, ce qui impliquait une sous-utilisation des machines monofilaires existantes. Ces machines monofilaires risquaient donc à court terme de devenir obsolètes à cause de la mutation technologique en cours. Le dispositif selon l'invention permet donc d'augmenter la durée d'utilisation et l'amortissement des machines monofilaires. Le prix de revient des produits obtenus en sortie du dispositif selon l'invention est alors moins élevé qu'avec l'utilisation des machines multifilaires de l'art antérieur.Besides the advantages mentioned above, the device according to the invention has a major economic interest. Indeed, since the beginning of the 1980s, the use of multi-wire machines of the prior art has become very widespread, which implies an under-use of existing single-wire machines. These monofilament machines therefore risked becoming obsolete in the short term because of the technological change underway. The device according to the invention therefore makes it possible to increase the duration of use and the amortization of single-wire machines. The cost price of the products obtained from the device according to the invention is then lower than with the use of multi-wire machines of the prior art.

Bien entendu, l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit.Of course, the invention is not limited to the embodiment which has just been described.

En particulier, le dispositif selon l'invention peut être constitué d'un nombre quelconque de machines monofilaires accouplées entre-elles. Une seule de ces machines, la dernière par exemple, sera débitrice et réceptrice à la fois.In particular, the device according to the invention can consist of any number of single-wire machines coupled to each other. Only one of these machines, the last for example, will be debtor and receiver at the same time.

Les bobinoirs des machines monofilaires, et en particulier le bobinoir de la machine réceptrice, peuvent être "statiques". Dans ce cas, ces bobinoirs n'ont pas de mouvement de rotation autour de leur axe, et c'est par exemple un bras tournant qui amène le fil et l'enroule autour du bobinoir. Par ailleurs, le trancanage n'est plus assuré par une poulie, mais par la translation le long de son axe du bobinoir lui-même.The winders of single-wire machines, and in particular the winder of the receiving machine, can be "static". In this case, these winders do not have a rotational movement around their axis, and it is for example a rotating arm which brings the thread and winds it around the winder. Furthermore, the cutting is no longer ensured by a pulley, but by the translation along its axis of the winder itself.

Il est également possible de récupérer la mèche de fils sur un bobinoir, statique ou dynamique, séparé de toute machine monofilaire et placé en bout du disposif par exemple.It is also possible to recover the wick of threads on a winder, static or dynamic, separate from any single-wire machine and placed at the end of the device for example.

Avantageusement, les machines monofilaires utilisées peuvent être équipées ou non d'un recuiseur continu. En pratique, le recuiseur entraîne un grand nombre de casses. En effet, le fil de cuivre produit présente souvent des inclusions ferreuses par exemple.Advantageously, the single-wire machines used may or may not be equipped with a continuous annealer. In practice, the annealer causes a large number of breaks. Indeed, the copper wire produced often has ferrous inclusions for example.

Or, le recuit est effectué par effet Joule, et les inclusions ferreuses sont alors la cause d'échauffements localisés entraînant la rupture du fil. Par conséquent, si le recuit est réalisé par exemple de manière statique, après le bobinage, le nombre de casses diminue, ce qui augmente encore la vitesse de tréfilage atteinte et le rendement du dispositif. De plus, le recuiseur continu demandant beaucoup d'entretien, les temps d'"arrêt machine" sont fréquents et relativement longs et le coût de maintenance est élevé. De ce fait, un dispositif sans recuiseurs continus permet d'abaisser le prix de revient du produit fini et d'augmenter les périodes d'utilisation continue.However, the annealing is carried out by the Joule effect, and the ferrous inclusions are then the cause of localized heating causing the wire to break. Consequently, if the annealing is carried out for example statically, after the winding, the number of breaks decreases, which further increases the drawing speed reached and the yield of the device. In addition, the continuous annealer requiring a lot of maintenance, the "machine stop" times are frequent and relatively long and the maintenance cost is high. Therefore, a device without continuous annealers makes it possible to lower the cost price of the finished product and to increase the periods of continuous use.

Si les machines monofilaires ne sont pas équipées de recuiseurs, ou si ces derniers ont été court-circuités, on peut récupérer une mèche non recuite et réaliser alors le recuit sur le bobinoir de réception dans un four de recuit statique.If the single-wire machines are not equipped with annealers, or if the latter have been short-circuited, an unannealed bit can be recovered and then annealed on the receiving winder in a static annealing oven.

Selon une autre possibilité, les fils peuvent être recuits dans un recuiseur continu placé entre la dernière machine à tréfiler et le bobinoir de réception.Alternatively, the wires can be annealed in a continuous annealer placed between the last wire drawing machine and the receiving winder.

Par ailleurs, les machines monofilaires utilisées peuvent comporter un bloc de tréfilage fonctionnant soit avec des cônes à gradins soit avec des cabestans.Furthermore, the single-wire machines used may include a drawing block operating either with stepped cones or with capstans.

Les pantins de régulation utilisés sont de tout type connu. Dans la gamme de diamètres 0,05 - 0,20mm, il est néanmoins préférable d'utiliser des "pantins de régulation légers" comme celui décrit à la figure 3, alors que dans la gamme de diamètres 0,20 - 0,50mm, on utilise habituellement des pantins de régulation dits "lourds" et connus de l'homme de métier.The control puppets used are of any known type. In the range of diameters 0.05 - 0.20mm, it is nevertheless preferable to use "light regulating jacks" like that described in FIG. 3, while in the range of diameters 0.20 - 0.50mm, so-called "heavy" control puppets are known, which are known to the skilled person.

De plus, le pantin doit présenter une faible inertie de manière à pouvoir réagir le plus rapidement possible à toute variation de la vitesse de tréfilage.In addition, the puppet must have a low inertia so as to be able to react as quickly as possible to any variation in the drawing speed.

Enfin, les systèmes de maintien du ou des fils(s) peuvent également être installés sur les poulies de renvoi intérieures, pour assurer un maintien encore plus efficace.Finally, the systems for holding the wire (s) can also be installed on the internal return pulleys, to ensure an even more effective support.

Claims (18)

1/ Dispositif de tréfilage multifilaire, pour la fabrication d'une mèche de fils métalliques, comprenant une ligne de tréfilage par fil de ladite mèche, des moyens de régulation de la vitesse de tréfilage et de la traction desdits fils, puis des moyens d'accouplement de chacun desdits fils tréfilés séparément, afin de former ladite mèche, et enfin, des moyens pour répartir uniformément ladite mèche sur un bobinoir principal, caractérisé en ce que chacune desdites lignes de tréfilage est constituée d'une machine à tréfiler monofilaire comprenant un bloc de tréfilage, un moyen, propre à ladite machine, de régulation de la vitesse de tréfilage et de la traction du fil tréfilé par ladite machine et un bobinoir, et lesdites machines monofilaires comportant en outre chacune un moyen d'accouplement de chacun desdits fils tréfilé séparément à vitesse et traction régulées aux autres fils afin de constituer ladite mèche s'embobinant au fur et à mesure uniformément sur ledit bobinoir principal. 1 / Multi-wire drawing device, for the manufacture of a wick of metal wires, comprising a wire drawing line by wire of said wick, means for regulating the drawing speed and the traction of said wires, then means for coupling of each of said drawn wires separately, in order to form said wick, and finally, means for uniformly distributing said wick on a main winder, characterized in that each of said drawing lines consists of a single-wire drawing machine comprising a block drawing, means, specific to said machine, for regulating the drawing speed and the traction of the drawn wire by said machine and a winder, and said single-wire machines each further comprising a means of coupling each of said drawn wires separately at speed and traction regulated to the other wires in order to constitute said wick which is gradually rewound ment on said main winder. 2/ Dispositif selon la revendication 1, caractérisé en ce que, lesdites machines monofilaires étant placées les unes à la suite des autres et appelées première à dernière machines, le premier fil tréfilé séparément et issu de la première desdites machines est envoyé par l'intermédiaire dudit moyen d'accouplement de ladite première machine sur le moyen d'accouplement de ladite seconde machine qui récupère ledit premier fil et le second fil tréfilé séparément issu de la seconde machine, et ainsi de suite jusqu'au moyen d'accouplement de ladite machine réceptrice qui récupère lesdits fils regroupés desdites machines débitrices et le dernier fil tréfilé séparément issu de ladite machine réceptrice, lesdits fils ainsi regroupés constituant ladite mèche. 2 / Device according to claim 1, characterized in that, said single-wire machines being placed one after the other and called first to last machines, the first wire drawn separately and coming from the first of said machines is sent via of said coupling means of said first machine on the coupling means of said second machine which collects said first wire and the second drawn wire separately from the second machine, and so on until coupling means of said machine receiver which collects said grouped wires from said debiting machines and the last wire drawn separately from said receiving machine, said wires thus grouped constituting said wick. 3/ Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'une seulement desdites machines monofilaires, appelée machine réceptrice, est destinée à recevoir sur son bobinoir, qui constitue alors ledit bobinoir principal, ladite mèche, lesdits bobinoirs des autres machines monofilaires, dites machines débitrices, n'étant pas utilisés. 3 / Device according to one of claims 1 or 2, characterized in that only one of said single-wire machines, called receiving machine, is intended to receive on its winder, which then constitutes said main winder, said wick, said other winders monofilament machines, called debit machines, not being used. 4/ Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que lesdits moyens d'accouplement sont orientables de manière à ce que chacun des fils tréfilés séparément par lesdites machines monofilaires puisse être dirigé vers une autre ligne de tréfilage multifilaire. 4 / Device according to one of claims 1 to 3, characterized in that that said coupling means are orientable so that each of the wires drawn separately by said single-wire machines can be directed to another line of multi-wire drawing. 5/ Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que ledit moyen de régulation propre à chacune desdites machines monofilaires est un pantin de régulation léger dans la gamme de diamètres compris entre 0,05 et 0,20mm pour le fil produit. 5 / Device according to one of claims 1 to 4, characterized in that said regulating means specific to each of said single-wire machines is a light regulating puppet in the range of diameters between 0.05 and 0.20mm for the wire product. 6/ Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que ledit moyen de régulation propre à chacune desdites machines monofilaires est un pantin de régulation lourd pour la gamme de diamètres compris entre 0,20 et 0,50mm pour le fil produit. 6 / Device according to one of claims 1 to 5, characterized in that said regulating means specific to each of said monofilament machines is a heavy regulation puppet for the range of diameters between 0.20 and 0.50mm for the wire product. 7/ Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que, ledit bobinoir principal étant un bobinoir dynamique, lesdits moyens pour répartir uniformément ladite mèche sur ledit bobinoir dynamique sont constitués d'une poulie de trancanage ayant un pas de trancanage adapté à la largeur de ladite mèche afin de constituer un bobinage uniforme. 7 / Device according to one of claims 1 to 6, characterized in that, said main winder being a dynamic winder, said means for uniformly distributing said wick on said dynamic winder consist of a cutting pulley having a cutting pitch adapted to the width of said wick in order to constitute a uniform winding. 8/ Dispositif selon l'une des revendication 1 à 7, caractérisé en ce que, ledit bobinoir principal étant un bobinoir statique, lesdits moyens pour répartir uniformément ladite mèche sur ledit bobinoir statique sont constitués d'un moteur permettant audit bobinoir statique d'effectuer des mouvements de translation parallèllement à son axe et à une vitesse adaptée à la largeur de ladite mèche afin de constituer un bobinage uniforme. 8 / Device according to one of claims 1 to 7, characterized in that, said main winder being a static winder, said means for uniformly distributing said wick on said static winder consist of a motor allowing said static winder to perform translational movements parallel to its axis and at a speed adapted to the width of said wick in order to constitute a uniform winding. 9/ Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que lesdits moyens d'accouplement dudit fil tréfilé séparément aux autres fils tréfilés séparément sont des poulies de renvoi extérieures solidaires chacune d'une desdites machines monofilaires. 9 / Device according to one of claims 1 to 8, characterized in that said means for coupling said wire drawn separately to the other wires drawn separately are external return pulleys secured to each of one of said single-wire machines. 10/ Dispositif selon la revendication 9, caractérisé en ce que chacune desdites poulies de renvoi extérieures est orientable et tourne autour d'un axe vertical tangent à son fond de gorge. 10 / Device according to claim 9, characterized in that each of said external deflection pulleys is orientable and rotates around a vertical axis tangent to its groove bottom. 11/ Dispositif selon l'une des revendications 9 et 10, caractérisé en ce que chacune desdites poulies de renvoi extérieures est munie d'un système de maintien dudit fil. 11 / Device according to one of claims 9 and 10, characterized in that each of said external deflection pulleys is provided with a holding system for said wire. 12/ Dispositif selon la revendication 11, caractérisé en ce que ledit système de maintien dudit fil est un système de pincement par feutres. 12 / Device according to claim 11, characterized in that said said wire holding system is a pinching system by felt. 13/ Dispositif selon la revendication 11, caractérisé en ce que ledit système de maintien dudit fil est un système de maintien par oeillets. 13 / Device according to claim 11, characterized in that said system for holding said wire is a system for holding by eyelets. 14/ Dispositif selon la revendication 11, caractérisé en ce que ledit système de maintien dudit fil est une coquille. 14 / Device according to claim 11, characterized in that said holding system of said wire is a shell. 15/ Dispositif selon l'une des revendications 1 à 14, caractérisé en ce que chacune desdites machines monofilaires comporte en outre un recuiseur continu situé entre ledit bloc de tréfilage et ledit moyen de régulation, de sorte que chacun desdits fils tréfilé séparément est en outre recuit séparément lorsque lesdits recuiseurs continus sont en fonctionnement. 15 / Device according to one of claims 1 to 14, characterized in that each of said single-wire machines further comprises a continuous annealer located between said drawing block and said regulating means, so that each of said son drawn separately is further annealed separately when said continuous annealers are in operation. 16/ Dispositif selon l'une des revendications 1 à 14, caractérisé en ce qu'un recuiseur continu est installé entre ladite dernière machine et ledit bobinoir principal. 16 / Device according to one of claims 1 to 14, characterized in that a continuous annealer is installed between said last machine and said main winder. 17/ Dispositif selon l'une des revendications 1 à 14, caractérisé en ce que ladite mèche est recuite de manière statique sur ledit bobinoir principal. 17 / Device according to one of claims 1 to 14, characterized in that said wick is annealed statically on said main winder. 18/ Mèche obtenue par le dispositif selon les revendications 1 à 17, caractérisée en ce que ladite mèche est exempte d'oxydation et utilisable en particulier pour la fabrication de l'un des produits tels que toron et tordon de conducteurs souples, et tresse de blindage en câblerie. 18 / wick obtained by the device according to claims 1 to 17, characterized in that said wick is free of oxidation and can be used in particular for the manufacture of one of the products such as strand and twist of flexible conductors, and braid of cable shielding.
EP91403462A 1990-12-21 1991-12-19 Multifilament wire drawing apparatus and wire-card produced by said apparatus Withdrawn EP0493212A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9016113A FR2670694B1 (en) 1990-12-21 1990-12-21 MULTIFILAR DRAWING DEVICE AND WICK OBTAINED USING THE SAME.
FR9016113 1990-12-21

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Publication Number Publication Date
EP0493212A1 true EP0493212A1 (en) 1992-07-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403462A Withdrawn EP0493212A1 (en) 1990-12-21 1991-12-19 Multifilament wire drawing apparatus and wire-card produced by said apparatus

Country Status (2)

Country Link
EP (1) EP0493212A1 (en)
FR (1) FR2670694B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011222A1 (en) * 1995-09-21 1997-03-27 Sket Verseilmaschinenbau Gmbh Process and device for the simultaneous winding of a multi-wire coil with several wires and/or the simultaneous unwinding of the wires from such a wound multi-wire coil for subsequent stranding
CN102527749A (en) * 2012-01-10 2012-07-04 张家港市盛天金属线有限公司 Continuous pay-off and take-up device
CN103480664A (en) * 2013-09-07 2014-01-01 安徽富强混凝土有限公司管桩分公司 Steel wire drawing combination equipment
FR3064934A1 (en) * 2017-04-11 2018-10-12 Compagnie Generale Des Etablissements Michelin METAL MONOFILAMENT VOLTAGE REGULATION INSTALLATION AND METAL MONOFILAMENT WINDING

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191326444A (en) * 1913-03-11 1900-01-01 Rockwell Clark Walter Improvement in Speed Controlling Mechanism for Rolling Mills and the like.
US1739282A (en) * 1926-11-30 1929-12-10 Western Electric Co Material-working apparatus
GB486997A (en) * 1937-06-12 1938-06-14 Nat Standard Co A machine for drawing wire or strip
GB1040430A (en) * 1964-07-22 1966-08-24 Blaw Knox Co Drawing apparatus for tubes or the like
US3672595A (en) * 1970-03-20 1972-06-27 Allan Wood Steel Co Drag wipe
FR2430073A1 (en) * 1978-06-26 1980-01-25 Renault Ind Belgique Sa Multicore cable prodn. machine - has multiple wire drawing unit feeding several conductors into insulation extrusion system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191326444A (en) * 1913-03-11 1900-01-01 Rockwell Clark Walter Improvement in Speed Controlling Mechanism for Rolling Mills and the like.
US1739282A (en) * 1926-11-30 1929-12-10 Western Electric Co Material-working apparatus
GB486997A (en) * 1937-06-12 1938-06-14 Nat Standard Co A machine for drawing wire or strip
GB1040430A (en) * 1964-07-22 1966-08-24 Blaw Knox Co Drawing apparatus for tubes or the like
US3672595A (en) * 1970-03-20 1972-06-27 Allan Wood Steel Co Drag wipe
FR2430073A1 (en) * 1978-06-26 1980-01-25 Renault Ind Belgique Sa Multicore cable prodn. machine - has multiple wire drawing unit feeding several conductors into insulation extrusion system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011222A1 (en) * 1995-09-21 1997-03-27 Sket Verseilmaschinenbau Gmbh Process and device for the simultaneous winding of a multi-wire coil with several wires and/or the simultaneous unwinding of the wires from such a wound multi-wire coil for subsequent stranding
CN102527749A (en) * 2012-01-10 2012-07-04 张家港市盛天金属线有限公司 Continuous pay-off and take-up device
CN103480664A (en) * 2013-09-07 2014-01-01 安徽富强混凝土有限公司管桩分公司 Steel wire drawing combination equipment
FR3064934A1 (en) * 2017-04-11 2018-10-12 Compagnie Generale Des Etablissements Michelin METAL MONOFILAMENT VOLTAGE REGULATION INSTALLATION AND METAL MONOFILAMENT WINDING
WO2018189119A1 (en) * 2017-04-11 2018-10-18 Compagnie Generale Des Etablissements Michelin Facility for controlling the tension of a metal monofilament and winding the metal monofilament
CN110520226A (en) * 2017-04-11 2019-11-29 米其林集团总公司 For controlling the tension of metal monofilament and winding the facility of metal monofilament

Also Published As

Publication number Publication date
FR2670694B1 (en) 1993-02-19
FR2670694A1 (en) 1992-06-26

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