Method for separating and assembling a double-layer arrangement

Description

[0001] The invention relates to a method and an installation for manufacturing a final assembly, a final assembly obtained by this method as well as a tire comprising such a final assembly.

[0002] WO2016083265 and WO2016083267 disclose a method and an installation for manufacturing first and second final assemblies. This method comprises a step of assembling several metal wire elements together in a layer of several metal wire elements around a transitional core to form a transitional assembly.

[0003] Also known from the state of the art are documents EP3293306 and DE102011053240.

[0004] Then, the method comprises a first step of splitting the transient assembly into: a first split assembly consisting of a layer consisting of several metallic wire elements wound in a helix and originating from the layer of the transient assembly, and a split assembly comprising several metallic wire elements wound in a helix around the transient core, these metallic wire elements originating from the layer of the transient assembly.

[0005] Then the method comprises a second step of splitting the split set into: a second split assembly consisting of a layer made up of the helically wound metal wire elements from the split assembly layer, and the transient core.

[0006] At the end of this process, each first and second split assembly forms a final assembly from which the transitional core has been separated. The separation of the transitional core is made possible by separating the metal wire elements from the layer of the transitional assembly which makes it possible to provide, during the first splitting step, an exit passage for the split assembly comprising the transitional core, and during the second splitting step, an exit passage for the transitional core.

[0007] Using the transitional core, the process allows the wire elements to be preformed collectively by pressing them onto the transitional core in order to give them all the same specific geometric characteristics, for example, a radius of curvature and a helix diameter. The use of a transitional core thus allows preforming without the use of mechanical tools. Each final assembly has advantageous mechanical properties, in particular compressive strength properties, which can be refined by modifying, in particular, the diameter of the transitional core and the helix angle of each wire element.

[0008] However, during this process, in order to provide the exit passages for the transitional core and for given geometric characteristics of each metal wire element, the number of metal wire elements in the layer of each final assembly is necessarily reduced. This reduction in the number of metal wire elements in the layer leads to a reduction in the linear mass of each final assembly and therefore a reduction in the reinforcement that the final assembly can provide, particularly within a tire. Conversely, if we wish to maintain a high level of reinforcement, it is necessary to start with a transitional assembly comprising a high number of metal wire elements, which does not make it possible to obtain all the desired geometric characteristics or the desired mechanical properties for the final assemblies.

[0009] The invention relates to a method for manufacturing a final assembly by means of collective pre-formation of these metallic wire elements around a transitional core, which does not prevent, on the one hand, maintaining a linear mass as high as possible and allows, on the other hand, access to all the desired geometric characteristics of the metallic wire elements.

[0010] To this end, the invention relates to a method for manufacturing a final assembly comprising at least two layers comprising an inner layer C1 consisting of C1'>1 metal wire elements wound in a helix and an outer layer C2 consisting of C2'>1 metal wire elements wound in a helix around the inner layer C1. The method comprises: a step of providing a transitional assembly comprising at least two layers comprising an inner layer A1 consisting of A1'>1 metal wire elements wound in a helix around a transitional core and an outer layer A2 consisting of A2'>1 metal wire elements wound in a helix around the inner layer A1, a step of separating the transitional assembly into at least: o a first split assembly comprising at least one layer D1 consisting of D1'≥1 metal wire element(s) wound in a helix, the D1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly, o a second split assembly comprising at least one layer comprising a layer E2 consisting of E2'≥1 metal wire element(s) wound in a helix,the E2' metallic wire element(s) being derived from the external layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, o a third fractional assembly comprising at least one layer F2 consisting of F2'≥ 1 metallic wire element(s) wound in a helix, the F2' metallic wire element(s) being derived from the external layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, o the transitional core or one or more assemblies comprising the transitional core.

[0011] The method according to the invention also comprises a step of reassembling at least the first split assembly, the second split assembly and the third split assembly together to form the final assembly.

[0012] At the end of the step of separating the transient assembly, in one variant, the first split assembly, the second split assembly, the third split assembly and the transient core are obtained, the transient core being isolated from any other metallic wire element from the inner A1 and outer A2 layers of the transient assembly. In other words, at the end of the step of separating the transient assembly, in this variant, the first split assembly, the second split assembly, the third split assembly and an assembly consisting of the transient core are obtained.

[0013] In another variant, at the end of the step of separating the transient assembly, the first split assembly, the second split assembly, the third split assembly and an assembly comprising the transient core are obtained, the assembly comprising the transient core also comprising one or more metallic wire elements from the inner A1 and outer A2 layers of the transient assembly. In other words, in this variant, at the end of the step of separating the transient assembly, the first split assembly, the second split assembly, the third split assembly and an assembly consisting of the transient core and one or more metallic wire elements from the inner A1 and outer A2 layers of the transient assembly are obtained.

[0014] In yet another variant, at the end of the step of separating the transient assembly, the first split assembly, the second split assembly, the third split assembly and several assemblies each comprising a part of the transient core are obtained, each assembly comprising a part of the transient core also comprising one or more metallic wire elements from the inner A1 and outer A2 layers of the transient assembly. Thus, the assemblies comprise the entire transient core and the parts of the transient core of the assemblies form the transient core in its entirety.In other words, in this variant, we obtain the first split assembly, the second split assembly, the third split assembly and several assemblies each consisting of a part of the transient core and one or more metallic wire elements from the internal A1 and external A2 layers of the transient assembly, the parts of the transient core constituting the transient core.

[0015] Thanks to the reassembly step of the method according to the invention, it is possible, for given geometric characteristics, to increase the linear mass of the final assembly compared to the method of the state of the art in which the number of metallic wire elements is necessarily limited, while allowing the exit of the transient core. Conversely, for a given linear mass, it is possible to obtain a wider range of geometric characteristics than with the method of the state of the art.

[0016] Furthermore, thanks to the two layers of the final assembly, a greater number of metallic wire elements are available to increase the linear mass of the final assembly compared to a single-layer assembly. Furthermore, due to a greater number of metallic wire elements, it is also possible to adjust the linear mass of the final assembly more precisely compared to a single-layer assembly. Finally, by playing on the geometric properties of each of the inner C1 and outer C2 layers of the final assembly, a much greater diversity of mechanical properties can be obtained with final assemblies comprising at least two layers compared to final assemblies consisting of a single layer.

[0017] In this reassembly step, the helically wound metal wire element(s) forming the layer(s) of the first split assembly are reassembled with the helically wound metal wire element(s) forming the layer(s) of the second split assembly and with the helically wound metal wire element(s) forming the layer(s) of the third split assembly. Reassembling the metal wire elements of these layers makes it possible to obtain the layers of the final assembly.

[0018] In the method according to the invention, each metal wire element of each first, second and third split assembly being derived from one of the internal and external layers of the transitional assembly, the reassembly step advantageously makes it possible to form the final assembly in which the C1' and C2' metal wire elements have the same geometric characteristics and therefore form two homogeneous layers of metal wire elements.Thus, in order to allow in an advantageous embodiment the obtaining of an assembly in which the metallic wire elements have identical geometric characteristics, the supply step, the separation step and the reassembly step are carried out so that, on the one hand, all the C1' metallic wire elements have the same diameter d1, are wound in a helix with the same pitch p1 and have the same helix diameter ϕ1 and on the other hand, all the C2' metallic wire elements have the same diameter d2, are wound in a helix with the same pitch p2 and have the same helix diameter ϕ2. The helix diameter corresponds to the diameter of the theoretical circle passing through the centers of the metallic wire elements of the layer in a plane perpendicular to the main axis of the assembly.It is recalled that the pitch at which each metallic wire element is wound is the length traveled by this wire element, measured parallel to the axis of the assembly in which it is located, at the end of which the wire element having this pitch makes a complete turn around said axis of the assembly.

[0019] Further, as described above, according to the different embodiments, the separation step and the reassembly step are performed such that A1'≥ C1' and A2'≥ C2'.

[0020] The transient assembly of the method according to the invention comprises the inner layer A1 consisting of A1' metal wire elements, the outer layer A2 consisting of A2' metal wire elements wound helically around the inner layer A1 and the transient core, the A1' metal wire elements being wound helically around the transient core. Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metal wire elements, the transient assembly consists of the inner layer A1 consisting of the A1' metal wire elements, the outer layer A2 consisting of the A2' metal wire elements wound helically around the inner layer A1 and the transient core, the A1' metal wire elements being wound helically around the transient core.

[0021] Another advantage of the method according to the invention is that each wire element of the final assembly is free of pre-forming marks. Such pre-forming marks include, in particular, flats. The pre-forming marks also include cracks extending in cutting planes substantially perpendicular to the main axis along which each wire element extends. Such cracks extend, in a cutting plane substantially perpendicular to the main axis, from a radially external surface of each wire element radially towards the inside of each wire element. As described above, such cracks are initiated by the mechanical pre-forming tools due to bending forces, i.e. perpendicular to the main axis of each wire element, which makes them very detrimental to endurance.Conversely, in the method used, the metal wire elements are preformed collectively and simultaneously on the transient core and the preforming forces are exerted in torsion and therefore not perpendicular to the main axis of each metal wire element. Any cracks created do not extend radially from the radially external surface of each metal wire element radially towards the inside of each metal wire element but along the radially external surface of each metal wire element which makes them less detrimental to endurance.

[0022] The method according to the invention is advantageously a continuous or in-line method. Thus, there is no intermediate storage step of the different assemblies and sets generated during the method between the step of supplying the temporary assembly and the step of reassembling the final assembly.

[0023] In the present invention, a step of splitting an initial object into several final objects means that, during this splitting step, the initial object is split into the final objects and only these final objects so that the initial object is found entirely in the final objects. Furthermore, in a splitting step, the initial object is split into the final objects simultaneously, that is to say that the final objects are separated at the same splitting point. In particular, in the case of an initial object split into at least three final objects, the three final objects are, during a splitting step, separated simultaneously from each other and at the same point.

[0024] In the present invention, a step of separating an initial object into several final objects means that, in order to obtain these final objects, at least one splitting step is necessary. Thus, in order to obtain the final objects, the separation step comprises a step of splitting the initial object into the final objects or else comprises a step of splitting the initial object into intermediate objects followed by one or more successive steps of splitting the intermediate objects into the final objects. Furthermore, in a separation step, the initial object is not necessarily found in its entirety in the final objects, since sets or assemblies may have been extracted from the process during one or more splitting steps and not used during subsequent splitting steps.Finally, a separation step may comprise one or more reassembly steps between several intermediate objects resulting from a splitting step of the separation step to obtain other intermediate objects or the final objects.

[0025] Whether in a separation step or a fractionation step, the final objects are physically separated from each other, i.e. not in contact with each other downstream of the separation or fractionation step and upstream of any step of reassembly of two or more of these final objects.

[0026] The final assembly is single helix. By definition, a single helix assembly is an assembly in which the axis of each wire element describes a single helix, unlike a double helix assembly in which the axis of each wire element describes a first helix around the axis of the assembly and a second helix around a helix described by the axis of the assembly.

[0027] In other words, when the assembly extends in a substantially rectilinear direction, the assembly comprising one or more layers of helically wound wire elements, each metal wire element of the or each layer describes a helix-shaped trajectory around a main axis substantially parallel to the substantially rectilinear direction so that, in a section plane substantially perpendicular to the main axis, the distance between the center of each metal wire element of a given layer and the main axis is substantially constant and equal for all the metal wire elements of each given layer. In contrast, when a double helix assembly extends in a substantially rectilinear direction, the distance between the center of each metal wire element of a given layer and the substantially rectilinear direction is different for all the metal wire elements of the given layer.

[0028] A wire element is any elongated element of great length relative to its cross-section, regardless of the shape of the latter, for example circular, oblong, rectangular or square, or even flat. When it is circular in shape, its diameter is preferably less than 3 mm. Very preferably, each wire element has a circular cross-section.

[0029] In one embodiment, each metal wire element comprises a single metal element monofilament.

[0030] In another embodiment, each metal wire element comprises an assembly of several metal element monofilaments. Thus, for example, each metal wire element comprises a strand of several metal element monofilaments. Each strand preferably comprises one or more layers of helically wound metal element monofilaments.

[0031] By definition, metallic means an elementary monofilament consisting mainly (i.e. for more than 50% of its mass) or entirely (for 100% of its mass) of a metallic material. Each metallic elementary monofilament is preferably made of steel, more preferably of pearlitic (or ferrito-pearlitic) carbon steel, hereinafter referred to as "carbon steel", or of stainless steel (by definition, steel containing at least 10.5% chromium).

[0032] Such a metallic elementary monofilament preferably comprises a steel core, optionally coated with one or more layers of a coating which may be metallic and / or based on a non-metallic adhesive composition. For example, the metallic coating comprises a metal chosen from zinc, copper, tin, cobalt and alloys of these metals. Examples of alloys of these metals include brass and bronze.

[0033] When a carbon steel is used, its carbon content (% by mass of steel) is preferably between 0.1% and 1.2%. Each elementary metallic monofilament has a mechanical strength ranging from 1000 MPa to 5000 MPa. Such mechanical strengths correspond to the steel grades commonly encountered in the tire field, namely, the NT (Normal Tensile), HT (High Tensile), ST (Super Tensile), SHT (Super High Tensile), UT (Ultra Tensile), UHT (Ultra High Tensile) and MT (Mega Tensile) grades, the use of high mechanical strengths possibly allowing improved reinforcement of the matrix in which the reinforcing element is intended to be embedded and a lightening of the matrix thus reinforced.

[0034] In a preferred embodiment, each elementary metallic monofilament has a diameter ranging from 0.05 mm to 0.50 mm, preferably from 0.10 mm to 0.48 mm and more preferably from 0.15 mm to 0.45 mm.

[0035] In a first configuration, the first split assembly consists of layer D1, the second split assembly consists of layer E2 and the third split assembly consists of layer F2. In this first configuration D1'=C1' and E2'+F2'=C2'.

[0036] In a second configuration, the first split assembly consists of layer D1, the second split assembly comprises at least two layers comprising an inner layer E1 consisting of E1'≥1 metal wire element(s) wound in a helix and the outer layer E2 consisting of the E2'≥1 metal wire element(s) wound in a helix around the inner layer E1, the E1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly, the E2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly and the third split assembly consists of layer F2. In this second configuration D1'+E1'=C1' and E2'+F2'=C2'.

[0037] In a third configuration, the first split assembly consists of layer D1, the second split assembly consists of layer E2 and the third split assembly comprises at least two layers comprising an inner layer F1 consisting of F1'≥1 metallic wire element(s) wound in a helix and the outer layer F2 consisting of the F2'≥1 metallic wire element(s) wound in a helix around the inner layer F1, the F1' metallic wire element(s) being derived from the inner layer A1 consisting of A1'>1 metallic wire elements of the transitional assembly. In this third configuration D1'+F1'=C1' and E2'+F2'=C2'.

[0038] In a fourth configuration, the first split assembly consists of layer D1, the second split assembly comprises at least two layers comprising an inner layer E1 consisting of E1'≥1 metal wire element(s) wound in a helix and the outer layer E2 consisting of the E2'≥1 metal wire element(s) wound in a helix around the inner layer E1, the E1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly, the E2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly,the third split assembly comprises at least two layers comprising an inner layer F1 consisting of F1'≥1 metal wire element(s) wound in a helix and the outer layer F2 consisting of the F2'≥1 metal wire element(s) wound in a helix around the inner layer F1, the F1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly. In this fourth configuration D1'+E1'+F1'=C1' and E2'+F2'=C2'.,

[0039] In a fifth configuration, the first split assembly comprises at least two layers comprising the inner layer D1 and an outer layer D2 consisting of D2'≥1 metallic wire element(s) wound in a helix around the inner layer D1, the D2' metallic wire element(s) being derived from the outer layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, the second split assembly is made up of the layer E2 and the third split assembly is made up of the layer F2. In this first configuration D1'=C1' and D2'+E2'+F2'=C2'.

[0040] In a sixth configuration, the first split assembly comprises at least two layers comprising the inner layer D1 and an outer layer D2 consisting of D2'≥1 metal wire element(s) wound in a helix around the inner layer D1, the D2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly, the second split assembly comprises at least two layers comprising an inner layer E1 consisting of E1'≥1 metal wire element(s) wound in a helix and the outer layer E2 consisting of the E2'≥1 metal wire element(s) wound in a helix around the inner layer E1, the E1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly,the E2' metallic wire element(s) being derived from the external layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly and the third split assembly is made up of the layer F2. In this second configuration D1'+E1'=C1' and D2'+E2'+F2'=C2'.,

[0041] In a seventh configuration, the first split assembly comprises at least two layers comprising the inner layer D1 and an outer layer D2 consisting of D2'≥1 metal wire element(s) wound in a helix around the inner layer D1, the D2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly, the second split assembly consists of the layer E2 and the third split assembly comprises at least two layers comprising an inner layer F1 consisting of F1'≥1 metal wire element(s) wound in a helix and the outer layer F2 consisting of the F2'≥1 metal wire element(s) wound in a helix around the inner layer F1, the F1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metallic wire elements of the transitional assembly.In this third configuration D1'+F1'=C1' and D2'+E2'+F2'=C2'.

[0042] In an eighth configuration, the first split assembly comprises at least two layers comprising the inner layer D1 and an outer layer D2 consisting of D2'≥1 metal wire element(s) wound in a helix around the inner layer D1, the D2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly, the second split assembly comprises at least two layers comprising an inner layer E1 consisting of E1'≥1 metal wire element(s) wound in a helix and the outer layer E2 consisting of the E2'≥1 metal wire element(s) wound in a helix around the inner layer E1, the E1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly, ,the E2' metallic wire element(s) being derived from the outer layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, the third split assembly comprises at least two layers comprising an inner layer F1 consisting of F1'≥1 metallic wire element(s) wound in a helix and the outer layer F2 consisting of the F2'≥1 metallic wire element(s) wound in a helix around the inner layer F1, the F1' metallic wire element(s) being derived from the inner layer A1 consisting of A1'>1 metallic wire elements of the transitional assembly. In this fourth configuration D1'+E1'+F1'=C1' and D2'+E2'+F2'=C2'.,

[0043] In an embodiment in which the reassembly step to form the final assembly is performed sequentially, the reassembly step comprises, from upstream to downstream: o an upstream reassembly step of one of the first, second and third split assemblies with another of the first, second and third split assemblies to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the remaining assembly between the first, second and third split assemblies to form the final assembly.

[0044] In a first variant of the embodiment in which the reassembly step to form the final assembly is carried out sequentially from the split assemblies of the first and fifth configurations described above, the reassembly step comprises, from upstream to downstream: o an upstream reassembly step of the first split assembly with the second split assembly to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the third split assembly to form the final assembly, or o an upstream reassembly step of the first split assembly with the third split assembly to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the second split assembly to form the final assembly.

[0045] In a second variant of the embodiment in which the reassembly step to form the final assembly is carried out sequentially from the split assemblies of the second and sixth configurations described above, the reassembly step comprises, from upstream to downstream: o an upstream reassembly step of the first split assembly with the second split assembly to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the third split assembly to form the final assembly.

[0046] In a third variant of the embodiment in which the reassembly step to form the final assembly is carried out sequentially from the split assemblies of the third and seventh configurations described above, the reassembly step comprises, from upstream to downstream: o an upstream reassembly step of the first split assembly with the third split assembly to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the second split assembly to form the final assembly.

[0047] In a fourth variant of the embodiment in which the reassembly step to form the final assembly is carried out sequentially from the split assemblies of the fourth and eighth configurations described above, the reassembly step comprises, from upstream to downstream: o an upstream reassembly step of the first split assembly with the second split assembly to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the third split assembly to form the final assembly, or o an upstream reassembly step of the first split assembly with the third split assembly to form a downstream transient assembly, o a downstream reassembly step of the downstream transient assembly with the second split assembly to form the final assembly.

[0048] In another embodiment in which the step of reassembling to form the final assembly is performed in a single step, the step of reassembling comprises a step of simultaneously reassembling the first, second and third split assemblies to form the final assembly.

[0049] In a first embodiment allowing a partial reassembly of the A1' metallic wire elements of the inner layer A1, the step of separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the step of reassembling at least the first split assembly, the second split assembly and the third split assembly together to form the final assembly are carried out so that C1' <A1' et C2'≤A2'

[0050] In variations of a first version of the first embodiment compatible with the second configuration of the first, second and third split assemblies described above, the step of separating the transient assembly into at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprises: a step of separating the transient assembly between: an upstream split assembly comprising at least two layers comprising an inner layer G1 consisting of G1'≥1 metal wire element(s) wound in a helix around the transient core and an outer layer G2 consisting of G2'≥1 metal wire element(s) wound in a helix around the inner layer G1, the G1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly and the G2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transient assembly, and the third split assembly, and a step of separating the upstream split assembly between: the first split assembly, the second split assembly, and the transient core or one or more assemblies comprising the transient core,preferably the transient core. ,

[0051] In these variants of the first version of the first embodiment, we have A1'≥G1', A2'≥F2'+G2', G1'≥D1' and G2'≥E2'.

[0052] In these variants, the upstream split assembly comprises the inner layer G1 consisting of the G1' metal wire element(s), the outer layer G2 consisting of G2' metal wire element(s) wound helically around the inner layer G1 and the transitional core, the G1' metal wire element(s) being wound helically around the transitional core. Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metal wire elements, the upstream split assembly consists of the inner layer G1 consisting of the G1' metal wire element(s), the outer layer G2 consisting of the G2' metal wire element(s) wound helically around the inner layer G1 and the transitional core, the G1' metal wire element(s) being wound helically around the transitional core.

[0053] In these variants of the first version of the first embodiment, the step of separating the transient assembly between the upstream split assembly and the third split assembly takes place upstream of the step of separating the upstream split assembly between the first split assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0054] Advantageously, in these variants of the first version of the first embodiment, the step of separating the upstream split assembly between the first split assembly, the second split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises: a step of separating the upstream split assembly between: a precursor assembly comprising at least one layer I1 consisting of I1'>1 metal wire elements wound in a helix, the I1' metal wire elements being derived from the internal layer G1 consisting of the G1' metal wire elements of the upstream split assembly, the second split assembly, the transitional core or one or more assemblies comprising the transitional core, preferably the transitional core, and a step of separating the precursor assembly between: a main assembly comprising at least one layer J1 consisting of J1'≥1 metal wire element(s) wound in a helix, the J1'≥1 metal wire element(s) being derived from the layer I1 consisting of the I1'>1 metal wire elements of the precursor assembly, the main assembly forming the first split assembly,and a complementary assembly comprising at least one layer K1 consisting of K1'≥1 metallic wire element(s) wound in a helix, the K1'≥1 metallic wire element(s) being derived from the layer I1 consisting of the I1'>1 metallic wire elements of the precursor assembly.

[0055] The main set forming the first split assembly, we have D1'=J1'.

[0056] Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metallic wire elements, the precursor assembly consists of layer I1 consisting of I1' metallic wire elements, the main assembly forming the first split assembly consists of layer J1 consisting of the J1' metallic wire element(s) and the complementary assembly consists of layer K1 consisting of the K1' metallic wire element(s).

[0057] In these variants of the first version of the first embodiment, the step of separating the upstream split assembly between the precursor assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, takes place upstream of the step of separating the precursor assembly between the main assembly forming the first split assembly and the complementary assembly.

[0058] Advantageously, the step of separating the precursor assembly between the main assembly forming the first split assembly and the complementary assembly comprises a step of splitting the precursor assembly into: the main assembly forming the first split assembly, and the complementary assembly.

[0059] Thus, we advantageously have, I1'=J1'+K1'.

[0060] In a first variant of the first version of the first embodiment in which the transient core is separated with the first split assembly, the step of separating the upstream split assembly between the precursor assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core comprises: a step of separating the upstream split assembly between: a downstream split assembly comprising at least one layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transient core, the H1' metallic wire element(s) being derived from the internal layer G1 consisting of the G1' metallic wire elements of the upstream split assembly, the second split assembly, and a step of separating the downstream split assembly between: the precursor assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0061] In the first variant of the first version of the first embodiment, we thus advantageously have G1'≥H1'+E1', G2'≥E2' and H1'≥I1'.

[0062] In this first variant, the downstream split assembly comprises the layer H1 consisting of the H1' metal wire element(s) and the transitional core, the H1' metal wire element(s) being wound in a helix around the transitional core. Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metal wire elements, the downstream split assembly consists of the layer H1 consisting of the H1' metal wire element(s) and the transitional core, the H1' metal wire element(s) being wound in a helix around the transitional core.

[0063] In this first variant, the step of separating the upstream fractionated assembly between the downstream fractionated assembly and the second fractionated assembly takes place upstream of the step of separating the downstream fractionated assembly between the precursor assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0064] Advantageously, in this first variant, the step of separating the upstream split assembly between the downstream split assembly and the second split assembly comprises a step of splitting the upstream split assembly into: the downstream split assembly, and the second split assembly.

[0065] Thus, we advantageously have G1'=H1'+E1' and G2'=E2'.

[0066] Advantageously, in this first variant, the step of separating the downstream fractionated assembly between the precursor assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises a step of fractionating the downstream fractionated assembly into: the precursor assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0067] Thus, we advantageously have H1'=I1' in the case of a step of splitting the downstream split set into the precursor set and the transient core.

[0068] In a second variant of the first embodiment in which the transient core is separated with the second split assembly, the step of separating the upstream split assembly between the precursor assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core comprises: a step of separating the upstream split assembly between: a downstream split assembly comprising at least two layers comprising an inner layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transitional core and an outer layer H2 consisting of H2'≥1 metallic wire element(s) wound in a helix around the inner layer H1, the H1' metallic wire element(s) being derived from the inner layer G1 consisting of G1'>1 metallic wire elements of the upstream split assembly and the H2' metallic wire element(s) being derived from the outer layer G2 consisting of G2'>1 metallic wire elements of the upstream split assembly, and the precursor assembly, and a step of separating the downstream split assembly between: the second split assembly, and the transitional core or one or more assemblies comprising the core transient, preferably the transient core.

[0069] In the second variant of the first embodiment, we thus advantageously have G1'≥H1'+I1', G2'≥E2', H1'≥E1' and H2'≥E2'.

[0070] In this second variant, the downstream split assembly comprises the inner layer H1 consisting of the H1' metal wire element(s), the outer layer H2 consisting of H2' metal wire element(s) wound helically around the inner layer H1 and the transitional core, the H1' metal wire element(s) being wound helically around the transitional core. Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metal wire elements, the downstream split assembly consists of the inner layer H1 consisting of the H1' metal wire element(s), the outer layer H2 consisting of the H2' metal wire element(s) wound helically around the inner layer H1 and the transitional core, the H1' metal wire element(s) being wound helically around the transitional core.

[0071] In this second variant, the step of separating the upstream split assembly between the downstream split assembly and the precursor assembly takes place upstream of the step of separating the downstream split assembly between the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0072] Advantageously, in this second variant, the step of separating the upstream split assembly between the downstream split assembly and the precursor assembly comprises a step of splitting the upstream split assembly into: the downstream split set, and the precursor set.

[0073] Thus, we advantageously have G1'=H1'+I1', G2'=E2'.

[0074] Advantageously, in this second variant, the step of separating the downstream split assembly between the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises a step of splitting the downstream split assembly into: the second split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0075] Thus, we advantageously have H1'=E1' and H2'=E2' in the case of a step of splitting the downstream split assembly into the second split assembly and the transient core.

[0076] In variations of a second version of the first embodiment compatible with the first configuration of the first, second and third split assemblies described above, the step of separating the transient assembly into at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprises: a step of separating the transient assembly between: an intermediate split assembly comprising a layer Q1 consisting of Q1'>1 metal wire elements wound in a helix around the transient core, the Q1' metal wire elements being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly, and the second split assembly, the third split assembly, and a step of separating the intermediate split assembly between: a derived assembly comprising at least one layer Z1 consisting of Z1'≥1 metal wire element(s) wound in a helix, the Z1' metal wire element(s) being derived from the inner layer Q1 consisting of the Q1'>1 metal wire elements of the intermediate split assembly, the first split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0077] In these variants of the second version of the first embodiment, we have A1'≥Q1', A2'≥E2'+F2' and Q1'≥Z1'+D1'.

[0078] In these variants, the intermediate split assembly comprises the layer Q1 consisting of the Q1' metal wire elements and the transitional core, the Q1' metal wire elements being helically wound around the transitional core. Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metal wire elements, the intermediate split assembly consists of the layer Q1 consisting of the Q1' metal wire elements and the transitional core, the Q1' metal wire elements being helically wound around the transitional core.

[0079] Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metallic wire elements, the derived assembly is made up of layer Z1 consisting of Z1'≥1 metallic wire element(s).

[0080] In these variants of the second version of the first embodiment, the step of separating the transient assembly into the intermediate split assembly, the second split assembly and the third split assembly takes place upstream of the step of separating the intermediate split assembly into the derived assembly, the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0081] Advantageously, in these variants of the first embodiment, the step of separating the intermediate split assembly between the derived assembly, the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises: a step of separating the intermediate split assembly into: a first separate assembly comprising at least one layer W1 consisting of W1'≥1 helically wound metal wire element(s), the W1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, a second separate assembly comprising at least one layer X1 consisting of X1'≥1 helically wound metal wire element(s), the X1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, the derived assembly, the transitional core or one or more assemblies comprising the transitional core, preferably the transitional core, a step of reassembling the first separate assembly and the second separate assembly together to form the first split assembly.

[0082] Thus, advantageously, we have Q1'≥W1'+X1'+Z1' and W1'+X1'=D1'

[0083] Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metal wire elements, the first separate assembly consists of layer W1 consisting of the W1' metal wire element(s), the second derived assembly consists of layer X1 consisting of the X1' metal wire element(s).

[0084] In these variants of the first embodiment, the step of separating the intermediate split assembly into the first split assembly, the second split assembly, the derived assembly, the transient core or one or more assemblies comprising the transient core, preferably the transient core takes place upstream of the step of reassembling the first split assembly and the second split assembly together to form the first split assembly.

[0085] In these variants of the second version of the first embodiment, according to a first option implementing a sequence of successive separation steps, the step of separating the intermediate fractionated set between the first separated set, the second separated set, the derived set, the transient core or one or more sets comprising the transient core, preferably the transient core, comprises: a step of separating the intermediate split assembly between: the derived assembly, and a downstream split assembly comprising a layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transient core, the H1' metallic wire element(s) being derived from the layer Q1 consisting of the Q1'>1 metallic wire elements of the intermediate split assembly, and a step of separating the downstream split assembly between: the first separated assembly, the second separated assembly, the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0086] Thus, advantageously, we have Q1'≥H1'+Z1' and H1'≥W1'+X1'.

[0087] Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metallic wire elements, the downstream split assembly consists of the layer H1 consisting of the H1' metallic wire element(s) and the transitional core, the H1' metallic wire element(s) being wound around the transitional core.

[0088] In these variants of the first embodiment, the step of separating the intermediate split assembly between the derived assembly and the downstream split assembly takes place upstream of the step of separating the downstream split assembly between the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0089] Advantageously, in this first option, the step of separating the intermediate split set between the derived set and the downstream split set comprises a step of splitting the intermediate split set into the derived set and the downstream split set.

[0090] Thus, we advantageously have Q1'=Z1'+H1'.

[0091] Advantageously, in this first option, the step of separating the downstream split assembly into the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises a step of splitting the downstream split assembly into the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0092] Thus, we advantageously have H1'=W1'+X1' in the case of a step of splitting the downstream split set into the first separate set, the second separate set and the transient core.

[0093] In these variants of the second version of the first embodiment, according to a second option implementing a simultaneous separation step, the step of separating the intermediate split set into the first split set, the second split set, the derived set, the transient core or one or more sets comprising the transient core, preferably the transient core, comprises a step of splitting the intermediate split set into the first split set, the second split set, the derived set, the transient core or one or more sets comprising the transient core, preferably the transient core.

[0094] In a second embodiment allowing a total reassembly of the A1' metallic wire elements of the inner layer A1, the step of separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core and the step of reassembling at least the first split assembly, the second split assembly and the third split assembly together to form the final assembly are carried out so that C1'=A1' and C2'≤A2'.

[0095] In variations of a first version of the second embodiment compatible with the second configuration of the first, second and third split assemblies described above, the step of separating the transient assembly into at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprises: a step of separating the transient assembly between: an upstream split assembly comprising at least two layers comprising an inner layer G1 consisting of G1'≥1 metal wire element(s) wound in a helix around the transient core and an outer layer G2 consisting of G2'≥1 metal wire element(s) wound in a helix around the inner layer G1, the G1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly and the G2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transient assembly, and the third split assembly, and a step of separating the upstream split assembly between: the first split assembly, the second split assembly, and the transient core.

[0096] In these variants of the second embodiment, we have A1'≥G1', A2'≥F2'+G2', G1'≥D1' and G2'≥E2'.

[0097] In these variants, the upstream split assembly comprises the inner layer G1 consisting of the G1' metal wire element(s), the outer layer G2 consisting of G2' metal wire element(s) wound helically around the inner layer G1 and the transitional core, the G1' metal wire element(s) being wound helically around the transitional core. Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metal wire elements, the upstream split assembly consists of the inner layer G1 consisting of the G1' metal wire element(s), the outer layer G2 consisting of the G2' metal wire element(s) wound helically around the inner layer G1 and the transitional core, the G1' metal wire element(s) being wound helically around the transitional core.

[0098] In these variants of the first version of the second embodiment, the step of separating the transient assembly between the upstream split assembly and the third split assembly takes place upstream of the step of separating the upstream split assembly between the first split assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0099] In a first variant of the first version of the second embodiment in which the transient core is separated with the first split assembly, the step of separating the upstream split assembly between the first split assembly, the second split assembly and the transient core comprises: a step of separating the upstream split assembly between: a downstream split assembly comprising at least one layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transitional core, the H1' metallic wire element(s) coming from the internal layer G1 consisting of the G1' metallic wire elements of the upstream split assembly, the second split assembly, and a step of separating the downstream split assembly between: the first split assembly, and the transitional core.

[0100] In the first variant of the first version of the second embodiment, we thus advantageously have G1'=H1'+E1', G2'≥E2' and H1'=D1'.

[0101] In this first variant, the downstream split assembly comprises the layer H1 consisting of the H1' metallic wire element(s) and the transitional core, the H1' metallic wire element(s) being wound in a helix around the transitional core. Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metallic wire elements, the downstream split assembly consists of the layer H1 consisting of the H1' metallic wire element(s) and the transitional core, the H1' metallic wire element(s) being wound in a helix around the transitional core.

[0102] In this first variant of the first version of the second embodiment, the step of separating the upstream split assembly between the downstream split assembly and the second split assembly takes place upstream of the step of separating the downstream split assembly between the first split assembly and the transient core.

[0103] Advantageously, the step of separating the upstream split assembly between the downstream split assembly and the second split assembly comprises a step of splitting the upstream split assembly into: the downstream split assembly, and the second split assembly.

[0104] Thus, we advantageously have, G1'=H1'+E1' and G2'=E2'.

[0105] Advantageously, the step of separating the downstream split assembly between the first split assembly and the transient core comprises a step of splitting the downstream split assembly into: the first split assembly, and the transient nucleus.

[0106] Thus, we advantageously have, H1'=D1'.

[0107] In a second variant of the first version of the second embodiment in which the transient core is separated with the second split assembly, the step of separating the upstream split assembly between the first split assembly, the second split assembly and the transient core comprises: a step of separating the upstream split assembly between: a downstream split assembly comprising at least two layers comprising an inner layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transitional core and an outer layer H2 consisting of H2'≥1 metallic wire element(s) wound in a helix around the inner layer H1, the H1' metallic wire element(s) being derived from the inner layer G1 consisting of G1'>1 metallic wire elements of the upstream split assembly and the H2' metallic wire element(s) being derived from the outer layer G2 consisting of G2'>1 metallic wire elements of the upstream split assembly, and the first split assembly, and a step of separating the downstream split assembly between: the second split assembly, and the transitional core.

[0108] In the second variant of the first version of the second embodiment, we thus advantageously have G1'=H1'+D1', G2'≥H2', H1'=E1' and H2'≥E2'.

[0109] In this second variant, the downstream split assembly comprises the inner layer H1 consisting of the H1' metal wire element(s), the outer layer H2 consisting of H2' metal wire element(s) wound helically around the inner layer H1 and the transitional core, the H1' metal wire element(s) being wound helically around the transitional core. Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metal wire elements, the downstream split assembly consists of the inner layer H1 consisting of the H1' metal wire element(s), the outer layer H2 consisting of the H2' metal wire element(s) wound helically around the inner layer H1 and the transitional core, the H1' metal wire element(s) being wound helically around the transitional core.

[0110] In this second variant, the step of separating the upstream split assembly between the downstream split assembly and the first split assembly takes place upstream of the step of separating the downstream split assembly between the second split assembly and the transient core.

[0111] Advantageously, in this second variant, the step of separating the upstream split assembly between the downstream split assembly and the first split assembly comprises a step of splitting the upstream split assembly into: the downstream split assembly, and the first split assembly.

[0112] Thus, we advantageously have G1'=H1'+D1', G2'=H2'.

[0113] Advantageously, in this second variant, the step of separating the downstream split assembly between the second split assembly and the transient core comprises a step of splitting the downstream split assembly into: the second split assembly, and the transient core.

[0114] Thus, we advantageously have H1'=E1' and H2'=E2'.

[0115] In variations of a second version of the second embodiment compatible with the first configuration of the first, second and third split assemblies described above, the step of separating the transient assembly into at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprises: a step of separating the transient assembly between: an intermediate split assembly comprising a layer Q1 consisting of Q1'>1 metal wire elements wound in a helix around the transient core, the Q1' metal wire elements coming from the internal layer A1 consisting of A1'>1 metal wire elements of the transient assembly, and the second split assembly, the third split assembly, and a step of separating the intermediate split assembly between: the first split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0116] In these variants of the second version of the first embodiment, we have A1'≥Q1', A2'≥E2'+F2' and Q1'≥D1'.

[0117] In these variants, the intermediate fractional assembly comprises the layer Q1 consisting of the Q1' metallic wire elements and the transitional core, the Q1' metallic wire elements being wound in a helix around the transitional core. Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metallic wire elements, the intermediate fractional assembly consists of the layer Q1 consisting of the one or more Q1' metallic wire elements and the transitional core, the Q1' metallic wire elements being wound in a helix around the transitional core.

[0118] In these variants of the second version of the first embodiment, the step of separating the transient assembly into the intermediate split assembly, the second split assembly and the third split assembly takes place upstream of the step of separating the intermediate split assembly into the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0119] Advantageously, in these variants of the second embodiment, the step of separating the intermediate split assembly between the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises: a step of separating the intermediate split assembly between: a first separate assembly comprising at least one layer W1 consisting of W1'≥1 helically wound metal wire element(s), the W1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, a second separate assembly comprising at least one layer X1 consisting of X1'≥1 helically wound metal wire element(s), the X1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, the transitional core or one or more assemblies comprising the transitional core, preferably the transitional core, a step of reassembling the first separate assembly and the second separate assembly together to form the first split assembly.

[0120] Thus, advantageously, we have Q1'≥W1'+X1' and W1'+X1'=D1'.

[0121] Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metal wire elements, the first separate assembly consists of layer W1 consisting of the W1' metal wire element(s), the second derived assembly consists of layer X1 consisting of the X1' metal wire element(s).

[0122] In these variants of the second embodiment, the step of separating the intermediate split assembly between the first split assembly, the second split assembly, the transient core or one or more assemblies comprising the transient core, preferably the transient core takes place upstream of the step of reassembling the first split assembly and the second split assembly together to form the first split assembly.

[0123] Advantageously, in these variants of the second embodiment, the step of separating the intermediate split assembly into the first split assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises a step of splitting the intermediate split assembly into the first split assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0124] Thus, we advantageously have Q1'=W1'+X1' in the case of a step of splitting the intermediate split set into the first separated set, the second separated set and the transient core.

[0125] In a first configuration of the first and second embodiments advantageously implementing the variants described above and allowing a partial reassembly of the A2' metallic wire elements of the external layer A2, the step of separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the step of reassembling at least the first split assembly, the second split assembly and the third split assembly together to form the final assembly are carried out so that C2' <A2'.

[0126] In variants of a first version of this first configuration compatible with the second configuration of the first, second and third split assemblies described above, the step of separating the transitional assembly between the upstream split assembly and the third split assembly comprises: a step of separating the transitional assembly between: o a precursor assembly comprising at least one layer I2 consisting of I2'>1 metal wire elements wound in a helix, the I2' metal wire elements being derived from the external layer A2 consisting of the A2' metal wire elements of the transitional assembly, o the upstream split assembly, and a step of separating the precursor assembly between: o a main assembly comprising a layer J2 consisting of J2'≥1 metal wire element(s) wound in a helix, the J2'≥1 metal wire element(s) being derived from the layer I2 consisting of the I2' metal wire elements of the precursor assembly, the main assembly forming the third split assembly, and o a complementary assembly comprising a layer K2 consisting of K2'≥1 metal wire element(s) wound in a helix,the K2'≥1 metallic wire element(s) coming from the layer I2 made up of the I2' metallic wire elements of the precursor assembly.,

[0127] The main set forming the third split assembly, we have J2'=F2'.

[0128] In these variants of the first version of the first configuration, we have A1'≥G1', A2'≥I2'+G2', I2'≥J2'+K2'.

[0129] Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metallic wire elements, the precursor assembly consists of layer I2 consisting of the I2' metallic wire elements wound in a helix, the main assembly consists of layer J2 consisting of the J2' metallic wire element(s) wound in a helix and the complementary assembly consists of layer K2 consisting of the K2' metallic wire element(s) wound in a helix.

[0130] In these variants of the first version of this first configuration, the step of separating the transient assembly between the upstream split assembly and the precursor assembly takes place upstream of the step of separating the precursor assembly between the main assembly forming the third split assembly and the complementary assembly.

[0131] Advantageously, the step of separating the transient assembly between the upstream fractionated assembly and the precursor assembly comprises a step of fractionating the transient assembly into: the upstream split set, and the precursor set.

[0132] Thus, we advantageously have, A1'=G1' and A2'=I2'+G2'.

[0133] Advantageously, the step of separating the precursor assembly between the main assembly forming the third split assembly and the complementary assembly comprises a step of splitting the precursor assembly into: the main assembly forming the third split assembly, and the complementary assembly.

[0134] Thus, we advantageously have, I2'=J2'+K2'.

[0135] In variants of a second version of this first configuration compatible with the first configuration of the first, second and third split assemblies described above, the step of separating the transient assembly into at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprises: a step of separating the transitional assembly between: a derived assembly comprising at least one layer Z2 consisting of Z2'≥1 metal wire element(s) wound in a helix, the Z2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly, an upstream split assembly comprising at least two layers comprising an inner layer G1 consisting of G1'>1 metal wire elements wound in a helix around the transitional core and an outer layer G2 consisting of G2'>1 metal wire elements wound in a helix around the inner layer G1, the G1' metal wire elements being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly and the G2' metal wire elements being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly,a step of separating the upstream split assembly into: the first split assembly, the second split assembly, the third split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0136] In these variants of the second version of this first configuration, we have A1'≥G1' and A2'≥Z2'+G2'.

[0137] In these variants, the upstream split assembly comprises the inner layer G1 consisting of the G1' metal wire elements, the outer layer G2 consisting of the G2' metal wire elements and the transitional core, the G1' metal wire elements being wound in a helix around the transitional core. Preferably, in an embodiment making it possible to manufacture a final assembly consisting of two layers of metal wire elements, the upstream split assembly consists of the inner layer G1 consisting of the G1' metal wire elements, the outer layer G2 consisting of the G2' metal wire elements and the transitional core, the G1' metal wire elements being wound in a helix around the transitional core.

[0138] In these variants of the second version of this first configuration, the step of separating the transient assembly between the derived assembly and the upstream split assembly takes place upstream of the step of separating the upstream split assembly between the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0139] Advantageously, in these variants of the second version of this first configuration, the step of separating the transient assembly between the derived assembly and the upstream split assembly comprises a step of splitting the transient assembly into the derived assembly and the upstream split assembly.

[0140] Thus, we advantageously have A1'=G1' and A2'=Z2'+G2'.

[0141] Advantageously, in these variants of the second version of this first configuration, the step of separating the upstream split assembly between the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprises: a step of separating the upstream split assembly between: an intermediate split assembly comprising at least one layer Q1 consisting of Q1'>1 metallic wire elements wound in a helix around the transient core, the Q1' metallic wire elements coming from the layer G1 consisting of the G1' metallic wire elements of the upstream split assembly, the second split assembly, the third split assembly, a step of separating the intermediate split assembly between: the first split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0142] Thus, advantageously, we have G1'≥Q1' and Q1'≥D1'.

[0143] Preferably, in an embodiment for manufacturing a final assembly consisting of two layers of metallic wire elements, the intermediate fractionated assembly consists of the layer Q1 consisting of the Q1' metallic wire elements and the transitional core.

[0144] In these variants of the second version of this first configuration, the step of separating the upstream split assembly between the intermediate split assembly, the second split assembly and the third split assembly takes place upstream of the step of separating the intermediate split assembly between the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0145] Advantageously, in these variants of the second version of this first configuration, the step of separating the upstream split assembly into the intermediate split assembly, the second split assembly and the third split assembly comprises a step of splitting the upstream split assembly into the intermediate split assembly, the second split assembly and the third split assembly.

[0146] Thus, we advantageously have, G1'=Q1' and G2'=E2'+F2'.

[0147] In a second configuration of the first and second embodiments advantageously implementing the variants described above and allowing a total reassembly of the A2' metallic wire elements of the external layer A2, the step of separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the step of reassembling at least the first split assembly, the second split assembly and the third split assembly together to form the final assembly are carried out so that C2'=A2'.

[0148] In variants of a first version of this second configuration compatible with the second configuration of the first, second and third split assemblies described above, the step of separating the transient assembly between the upstream split assembly and the third split assembly comprises a step of splitting the transient assembly into the upstream split assembly and the third split assembly.

[0149] In variations of a second version of this second configuration compatible with the first configuration of the first, second and third split assemblies described above, the step of separating the transient assembly into the intermediate split assembly, the second split assembly and the third split assembly comprises a step of splitting the transient assembly into the intermediate split assembly, the second split assembly and the third split assembly.

[0150] In a particularly preferred embodiment, the final assembly being made up of the inner layer C1 consisting of C1' metallic wire elements wound in a helix and the outer layer C2 consisting of C2' metallic wire elements wound in a helix around the inner layer C1, the method comprises: a step of providing a transitional assembly consisting of an inner layer A1 made up of A1'>1 metal wire elements, an outer layer A2 made up of A2'>1 metal wire elements wound in a helix around the inner layer A1 and a transitional core, the A1' metal wire elements being wound in a helix around the transitional core a step of separating the transitional assembly into at least: a first split assembly made up of a layer D1 made up of D1'≥1 metal wire element(s) wound in a helix, the D1' metal wire element(s) coming from the inner layer A1 made up of A1'>1 metal wire elements of the transitional assembly, a second split assembly comprising at least one layer E2 made up of E2'≥1 metal wire element(s) wound in a helix,the E2' metallic wire element(s) being derived from the outer layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, a third split assembly consisting of a layer F2 consisting of F2'≥ 1 metallic wire element(s) wound in a helix, the F2' metallic wire element(s) being derived from the outer layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, the transitional core or one or more assemblies comprising the transitional core, the method comprising a step of reassembling at least the first split assembly, the second split assembly and the third split assembly together, to form the final assembly.

[0151] In this particularly preferred embodiment, the final assembly consists of two layers of C1' and C2' metal wire elements wound in a helix and is therefore devoid of a central core around which the C1' and C2' metal wire elements would be wound.

[0152] Advantageously, A1' goes from 2 to 10 and A2' goes from 6 to 20.

[0153] Very preferably, the step of providing the transitional assembly comprises a step of assembly by twisting the A1' metal wire elements wound in a helix around the transitional core and a step of assembly by twisting the A2' metal wire elements wound in a helix around the internal layer A1.

[0154] Advantageously, the step of providing the transient assembly comprises a step of balancing the transient assembly. Thus, the balancing step being carried out on the transient assembly comprising the A1', A2' metallic wire elements and the transient core, the balancing step is implicitly carried out upstream of the step of separation between the first, second and third split assemblies. This avoids having to manage the residual torsion imposed during the step of assembling the transient assembly during the path of the different assemblies downstream of the assembly step, in particular in the guide means, for example the pulleys.

[0155] Advantageously, the method comprises a step of balancing the final assembly downstream of the reassembly step.

[0156] Advantageously, the method comprises a step of maintaining the rotation of the final assembly around its running direction. This rotation maintenance step is carried out downstream of the step of separating the transitional assembly and upstream of the step of balancing the final assembly.

[0157] Preferably, the method is free of individual preforming steps for each of the metal wire elements. In prior art methods using an individual preforming step for each of the metal wire elements, the latter are given a shape by preforming tools, for example rollers, these tools creating defects on the surface of the metal wire elements. These defects significantly reduce the endurance of the metal wire elements and therefore of the final assembly.

[0158] Most preferably, the transitional core is a metal wire element. In a preferred embodiment, the transitional core is a metal monofilament. Thus, the diameter of the space between the metal wire elements and therefore the geometric characteristics of the final assembly are very precisely controlled, unlike a transitional core made of a textile material, for example polymeric, the compressibility of which can cause variations in the geometric characteristics of the final assembly.

[0159] In other equally advantageous embodiments, the transitional core is a textile filament element. Such a textile filament element comprises at least one multifilament textile strand or, alternatively, is made of a textile monofilament. The textile filaments that can be used are chosen from polyesters, polyketones, aliphatic or aromatic polyamides and mixtures of textile filaments of these materials. Thus, the risks of breakage of the transitional core caused by friction of the metal filament elements on the transitional core as well as by the twists imposed on the transitional core are reduced.

[0160] The invention also relates to a final assembly comprising at least two layers comprising an inner layer C1 consisting of C1'>1 metal wire elements (14) wound in a helix and an outer layer C2 consisting of C2'>1 metal wire elements wound in a helix around the inner layer obtained by the method as defined above and in which each metal wire element of each inner layer C1 and outer layer C2 is free of preformation marks.

[0161] The invention also relates to a tire comprising a final assembly as defined above.

[0162] Such a tire is particularly intended to equip passenger car and SUV type motor vehicles (" Sport Utility Vehicles ") ,two-wheelers (including bicycles, motorcycles), aircraft, such as industrial vehicles chosen from vans, "Heavy goods vehicles" - i.e. metro, buses, road transport vehicles (trucks, tractors, trailers), off-road vehicles such as agricultural or civil engineering vehicles -, other transport or handling vehicles.

[0163] Advantageously, the tire comprises a crown comprising a tread and a crown reinforcement, the tire comprising two sidewalls, two beads, each sidewall connecting each bead to the crown, the crown reinforcement extending in the crown in a circumferential direction of the tire, the tire comprising a carcass reinforcement anchored in each of the beads and extending in the sidewalls and in the crown, the crown reinforcement being radially interposed between the carcass reinforcement and the tread. In one embodiment, the crown reinforcement comprises a final assembly as defined above.

[0164] The invention also relates to an installation for manufacturing a final assembly comprising at least two layers comprising an inner layer C1 consisting of C1'>1 metal wire elements wound in a helix and an outer layer C2 consisting of C2'>1 metal wire elements wound in a helix around the inner layer C1. The installation comprises: means for providing a transitional assembly comprising at least two layers comprising an inner layer A1 consisting of A1'>1 metal wire elements wound in a helix around a transitional core and an outer layer A2 consisting of A2'>1 metal wire elements wound in a helix around the inner layer A1, means for separating the transitional assembly between at least: o a first split assembly comprising at least one layer D1 consisting of D1'≥1 metal wire element(s) wound in a helix, the D1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly, o a second split assembly comprising at least one layer comprising a layer E2 consisting of E2'≥1 metal wire element(s) wound in a helix,the E2' metallic wire element(s) being derived from the external layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, o a third fractional assembly comprising at least one layer F2 consisting of F2'≥ 1 metallic wire element(s) wound in a helix, the F2' metallic wire element(s) being derived from the external layer A2 consisting of A2'>1 metallic wire elements of the transitional assembly, o the transitional core or one or more assemblies comprising the transitional core.

[0165] The installation according to the invention also comprises means for reassembling at least the first split assembly, the second split assembly and the third split assembly together to form the final assembly. In a manner analogous to the method described above, the separation means and the reassembly means are arranged so that A1'≥ C1' and A2'≥ C2'.

[0166] In the present invention, means for splitting an initial object into several final objects mean that, by implementing these splitting means, the initial object is split into the final objects and only these final objects so that the initial object is found entirely in the final objects. Furthermore, by using splitting means, the initial object is split into the final objects simultaneously, that is to say that the final objects are separated at the same splitting point. In particular, in the case of an initial object split into at least three final objects, the three final objects are, by using splitting means, separated simultaneously from each other and at the same point.

[0167] In the present invention, means for separating an initial object into several final objects mean that, in order to obtain these final objects, at least fractionation means are necessary. Thus, in order to obtain the final objects, the separation means comprise means for fractionating the initial object into the final objects or comprise means for fractionating the initial object into intermediate objects and means for fractionating the intermediate objects into the final objects. By using the separation means, the initial object is not necessarily found in its entirety in the final objects, since sets or assemblies may have been extracted from the process during their passage through fractionation means and not used during their passage through subsequent fractionation means.Finally, separation means may comprise means of reassembly between several intermediate objects resulting from means of splitting the separation means to obtain other intermediate objects or the final objects.

[0168] In an embodiment in which the reassembly means for forming the final assembly are arranged successively from upstream to downstream, the reassembly means comprise, from upstream to downstream: o means for upstream reassembly of one of the first, second and third split assemblies with another of the first, second and third split assemblies to form a downstream transitional assembly, o means for downstream reassembly of the downstream transitional assembly with the assembly remaining between the first, second and third split assemblies to form the final assembly.

[0169] In a first variant of the embodiment in which the reassembly means for forming the final assembly from the split assemblies of the first and fifth configurations described above are arranged successively from upstream to downstream, the reassembly means comprise, from upstream to downstream: o upstream reassembly means of the first split assembly with the second split assembly to form a downstream transient assembly, o downstream reassembly means of the downstream transient assembly with the third split assembly to form the final assembly, or o upstream reassembly means of the first split assembly with the third split assembly to form a downstream transient assembly, o downstream reassembly means of the downstream transient assembly with the second split assembly to form the final assembly.

[0170] In a second variant of the embodiment in which the reassembly means for forming the final assembly from the split assemblies of the second and sixth configurations described above are arranged successively from upstream to downstream, the reassembly means comprise, from upstream to downstream: o upstream reassembly means of the first split assembly with the second split assembly to form a downstream transient assembly, o downstream reassembly means of the downstream transient assembly with the third split assembly to form the final assembly.

[0171] In a third variant of the embodiment in which the reassembly means for forming the final assembly from the split assemblies of the third and seventh configurations described above are arranged successively from upstream to downstream, the reassembly means comprise, from upstream to downstream: o means for upstream reassembly of the first split assembly with the third split assembly to form a downstream transient assembly, o means for downstream reassembly of the downstream transient assembly with the second split assembly to form the final assembly.

[0172] In a fourth variant of the embodiment in which the reassembly means for forming the final assembly from the split assemblies of the fourth and eighth configurations described above are arranged successively from upstream to downstream, the reassembly means comprise, from upstream to downstream: o upstream reassembly means of the first split assembly with the second split assembly to form a downstream transient assembly, o downstream reassembly means of the downstream transient assembly with the third split assembly to form the final assembly, or o upstream reassembly means of the first split assembly with the third split assembly to form a downstream transient assembly, o downstream reassembly means of the downstream transient assembly with the second split assembly to form the final assembly.

[0173] In another embodiment, the reassembly means comprises means for simultaneously reassembling the first, second and third split assemblies to form the final assembly.

[0174] In a first embodiment allowing partial reassembly of the A1' metallic wire elements of the inner layer A1, the means for separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the means for reassembling the first split assembly, the second split assembly and the third split assembly together to form the final assembly are arranged so that C1' <A1' et C2'≤A2'.

[0175] In variations of a first version of the first embodiment compatible with the second configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprise: means for separating the transitional assembly between: an upstream split assembly comprising at least two layers comprising an inner layer G1 consisting of G1'≥1 metal wire element(s) wound in a helix around the transitional core and an outer layer G2 consisting of G2'≥1 metal wire element(s) wound in a helix around the inner layer G1, the G1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly and the G2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly, and the third split assembly, and means for separating the upstream split assembly between: the first split assembly, the second split assembly, and the transitional core or one or more assemblies comprising the transient core,preferably the transient core. ,

[0176] In these variants of the first version of the first embodiment, the means for separating the transient assembly between the upstream split assembly and the third split assembly are arranged upstream of the means for separating the upstream split assembly between the first split assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0177] Advantageously, in these first and second variants of the first version of the first embodiment, the means for separating the upstream split assembly between the first split assembly, the second split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise: means for separating the upstream split assembly between: a precursor assembly comprising at least one layer I1 consisting of I1'>1 metal wire elements wound in a helix, the I1' metal wire elements coming from the inner layer G1 consisting of the G1' metal wire elements of the upstream split assembly, the second split assembly, the transitional core or one or more assemblies comprising the transitional core, preferably the transitional core, and means for separating the precursor assembly between: a main assembly comprising at least one layer J1 consisting of J1'≥1 metal wire element(s) wound in a helix, the J1'≥1 metal wire element(s) coming from the layer I1 consisting of the I1'>1 metal wire elements of the precursor assembly, the main assembly forming the first split assembly,and a complementary assembly comprising at least one layer K1 consisting of K1'≥1 metallic wire element(s) wound in a helix, the K1'≥1 metallic wire element(s) being derived from the layer I1 consisting of the I1'>1 metallic wire elements of the precursor assembly.

[0178] In these variants of the first version of the first embodiment, the means for separating the upstream split assembly between the precursor assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, are arranged upstream of the means for separating the precursor assembly between the main assembly forming the first split assembly and the complementary assembly.

[0179] Advantageously, the means for separating the precursor assembly between the main assembly forming the first split assembly and the complementary assembly comprise means for splitting the precursor assembly into: the main assembly forming the first split assembly, and the complementary assembly.

[0180] In a first variant of the first version of the first embodiment in which the transient core is separated with the first split assembly, the means for separating the upstream split assembly between the precursor assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise: means for separating the upstream split assembly between: a downstream split assembly comprising at least one layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transient core, the H1' metallic wire element(s) being derived from the internal layer G1 consisting of the G1' metallic wire elements of the upstream split assembly, the second split assembly, and means for separating the downstream split assembly between: the precursor assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0181] In this first variant, the means for separating the upstream split assembly between the downstream split assembly and the second split assembly are arranged upstream of the means for separating the downstream split assembly between the precursor assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0182] Advantageously, in this first variant, the means for separating the upstream split assembly between the downstream split assembly and the second split assembly comprise means for splitting the upstream split assembly into: the downstream split assembly, and the second split assembly.

[0183] Advantageously, in this first variant, the means for separating the downstream fractionated assembly between the precursor assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise means for fractionating the downstream fractionated assembly into: the precursor assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0184] In a second variant of the first version of the first embodiment in which the transient core is separated with the second split assembly, the means for separating the upstream split assembly between the precursor assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise: means for separating the upstream split assembly between: a downstream split assembly comprising at least two layers comprising an inner layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transitional core and an outer layer H2 consisting of H2'≥1 metallic wire element(s) wound in a helix around the inner layer H1, the H1' metallic wire element(s) being derived from the inner layer G1 consisting of G1'>1 metallic wire elements of the upstream split assembly and the H2' metallic wire element(s) being derived from the outer layer G2 consisting of G2'>1 metallic wire elements of the upstream split assembly, and the precursor assembly, and means for separating the downstream split assembly between: the second split assembly, and the transitional core or one or more assemblies comprising the core transient, preferably the transient core.

[0185] In this second variant, the means for separating the upstream split assembly between the downstream split assembly and the precursor assembly are arranged upstream of the means for separating the downstream split assembly between the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0186] Advantageously, in this second variant, the means for separating the upstream split assembly between the downstream split assembly and the precursor assembly comprise means for splitting the upstream split assembly into: the downstream split set, and the precursor set.

[0187] Advantageously, in this second variant, the means for separating the downstream split assembly between the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise means for splitting the downstream split assembly into: the second split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0188] In variations of a second version of the first embodiment compatible with the first configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprise: means for separating the transient assembly between: an intermediate split assembly comprising a layer Q1 consisting of Q1'>1 metal wire elements wound in a helix around the transient core, the Q1' metal wire elements being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly, and the second split assembly, the third split assembly, and means for separating the intermediate split assembly between: a derived assembly comprising at least one layer Z1 consisting of Z1'≥1 metal wire element(s) wound in a helix, the Z1' metal wire element(s) being derived from the inner layer Q1 consisting of the Q1'>1 metal wire elements of the intermediate split assembly, the first split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0189] In these variants of the second version of the first embodiment, the means for separating the transient assembly between the intermediate split assembly, the second split assembly and the third split assembly are arranged upstream of the means for separating the intermediate split assembly between the derived assembly, the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0190] Advantageously, in these variants of the first embodiment, the means for separating the intermediate split assembly between the derived assembly, the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise: means for separating the intermediate split assembly between: a first separate assembly comprising at least one layer W1 consisting of W1'≥1 helically wound metal wire element(s), the W1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, a second separate assembly comprising at least one layer X1 consisting of X1'≥1 helically wound metal wire element(s), the X1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, the derived assembly, the transitional core or one or more assemblies comprising the transitional core, preferably the transitional core, means for reassembling the first separate assembly and the second separate assembly together to form the first split assembly.

[0191] In these variants of the first embodiment, the means for separating the intermediate split assembly between the first separated assembly, the second separated assembly, the derived assembly, the transient core or one or more assemblies comprising the transient core, preferably the transient core are arranged upstream of the means for reassembling the first separated assembly and the second separated assembly together to form the first split assembly.

[0192] In these variants of the second version of the first embodiment, according to a first option implementing successive separation means, the means of separation of the intermediate fractionated set between the first separated set, the second separated set, the derived set, the transient core or one or more sets comprising the transient core, preferably the transient core, comprise: means for separating the intermediate split assembly between: the derived assembly, and a downstream split assembly comprising a layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transient core, the H1' metallic wire element(s) coming from the layer Q1 consisting of the Q1'>1 metallic wire elements of the intermediate split assembly, and means for separating the downstream split assembly between: the first separated assembly, the second separated assembly, the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0193] In these variants of the first embodiment, the means for separating the intermediate split assembly between the derived assembly and the downstream split assembly are arranged upstream of the means for separating the downstream split assembly between the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0194] Advantageously, in this first option, the means for separating the intermediate split assembly between the derived assembly and the downstream split assembly comprise means for splitting the intermediate split assembly into the derived assembly and the downstream split assembly.

[0195] Advantageously, in this first option, the means for separating the downstream split assembly between the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise means for splitting the downstream split assembly into the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0196] In these variants of the second version of the first embodiment, according to a second option, the means for separating the intermediate split set into the first split set, the second split set, the derived set, the transient core or one or more sets comprising the transient core, preferably the transient core, comprise means for splitting the intermediate split set into the first split set, the second split set, the derived set, the transient core or one or more sets comprising the transient core, preferably the transient core.

[0197] In a second embodiment allowing a total reassembly of the A1' metallic wire elements of the internal layer A1, the means for separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the means for reassembling the first split assembly, the second split assembly and the third split assembly together to form the final assembly are arranged so that C1'=A1' and C2'≤A2'.

[0198] In variations of a first version of the second embodiment compatible with the second configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprise: means for separating the transient assembly between: an upstream split assembly comprising at least two layers comprising an inner layer G1 consisting of G1'≥1 metal wire element(s) wound in a helix around the transient core and an outer layer G2 consisting of G2'≥1 metal wire element(s) wound in a helix around the inner layer G1, the G1' metal wire element(s) being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transient assembly and the G2' metal wire element(s) being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transient assembly, and the third split assembly, and means for separating the upstream split assembly between: the first split assembly, the second split assembly, and the transient core.

[0199] In these variants of the first version of the second embodiment, the means for separating the transient assembly between the upstream split assembly and the third split assembly are arranged upstream of the means for separating the upstream split assembly between the first split assembly, the second split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0200] In a first variant of the first version of the second embodiment in which the transient core is separated with the first split assembly, the means for separating the upstream split assembly between the first split assembly, the second split assembly and the transient core comprise: means for separating the upstream split assembly between: a downstream split assembly comprising at least one layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transitional core, the H1' metallic wire element(s) coming from the internal layer G1 consisting of the G1' metallic wire elements of the upstream split assembly, the second split assembly, and means for separating the downstream split assembly between: the first split assembly, and the transitional core.

[0201] In this first variant of the first version of the second embodiment, the means for separating the upstream split assembly between the downstream split assembly and the second split assembly are arranged upstream of the means for separating the downstream split assembly between the first split assembly and the transient core.

[0202] Advantageously, the means for separating the upstream split assembly between the downstream split assembly and the second split assembly comprise means for splitting the upstream split assembly into: the downstream split assembly, and the second split assembly.

[0203] Advantageously, the means for separating the downstream split assembly between the first split assembly and the transient core comprise means for splitting the downstream split assembly into: the first split assembly, and the transient nucleus.

[0204] In a second variant of the first version of the second embodiment in which the transient core is separated with the second split assembly, the means for separating the upstream split assembly between the first split assembly, the second split assembly and the transient core comprise: means for separating the upstream split assembly between: a downstream split assembly comprising at least two layers comprising an inner layer H1 consisting of H1'≥1 metallic wire element(s) wound in a helix around the transitional core and an outer layer H2 consisting of H2'≥1 metallic wire element(s) wound in a helix around the inner layer H1, the H1' metallic wire element(s) being derived from the inner layer G1 consisting of G1'>1 metallic wire elements of the upstream split assembly and the H2' metallic wire element(s) being derived from the outer layer G2 consisting of G2'>1 metallic wire elements of the upstream split assembly, and the first split assembly, and means for separating the downstream split assembly between: the second split assembly, and the transitional core.

[0205] In this second variant, the means for separating the upstream split assembly between the downstream split assembly and the first split assembly are arranged upstream of the means for separating the downstream split assembly between the second split assembly and the transient core.

[0206] Advantageously, in this second variant, the means for separating the upstream split assembly between the downstream split assembly and the first split assembly comprise means for splitting the upstream split assembly into: the downstream split assembly, and the first split assembly.

[0207] Advantageously, in this second variant, the means for separating the downstream split assembly between the second split assembly and the transient core comprise means for splitting the downstream split assembly into: the second split assembly, and the transient core.

[0208] In variations of a second version of the second embodiment compatible with the first configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprise: means for separating the transient assembly between: an intermediate split assembly comprising a layer Q1 consisting of Q1'>1 metal wire elements wound in a helix around the transient core, the Q1' metal wire elements coming from the internal layer A1 consisting of A1'>1 metal wire elements of the transient assembly, and the second split assembly, the third split assembly, and means for separating the intermediate split assembly between: the first split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0209] In these variants of the second version of the first embodiment, the means for separating the transient assembly between the intermediate split assembly, the second split assembly and the third split assembly are arranged upstream of the means for separating the intermediate split assembly between the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0210] Advantageously, in these variants of the first embodiment, the means for separating the intermediate split assembly between the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise: means for separating the intermediate split assembly between: a first separate assembly comprising at least one layer W1 consisting of W1'≥1 helically wound metal wire element(s), the W1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, a second separate assembly comprising at least one layer X1 consisting of X1'≥1 helically wound metal wire element(s), the X1' metal wire element(s) being derived from the layer Q1 consisting of the Q1' metal wire elements of the intermediate split assembly, the transitional core or one or more assemblies comprising the transitional core, preferably the transitional core, means for reassembling the first separate assembly and the second separate assembly together to form the first split assembly.

[0211] In these variants of the first embodiment, the means for separating the intermediate split assembly between the first separated assembly, the second separated assembly, the transient core or one or more assemblies comprising the transient core, preferably the transient core are arranged upstream of the means for reassembling the first separated assembly and the second separated assembly together to form the first split assembly.

[0212] Advantageously, in these variants of the first embodiment, the means for separating the intermediate split assembly into the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise means for splitting the intermediate split assembly into the first separated assembly, the second separated assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0213] In a first configuration of the first and second embodiments advantageously implementing the variants described above and allowing partial reassembly of the A2' metallic wire elements of the outer layer A2, the means for separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the means for reassembling the first split assembly, the second split assembly and the third split assembly together to form the final assembly are arranged so that C2' <A2'.

[0214] In variants of a first version of this first configuration compatible with the second configuration of the first, second and third split assemblies described above, the means for separating the transitional assembly between the upstream split assembly and the third split assembly comprise: means for separating the transitional assembly between: ∘ a precursor assembly comprising at least one layer I2 consisting of I2'>1 metal wire elements wound in a helix, the I2' metal wire elements being derived from the external layer A2 consisting of the A2' metal wire elements of the transitional assembly, ∘ the upstream split assembly, and means for separating the precursor assembly between: ∘ a main assembly comprising a layer J2 consisting of J2'≥1 metal wire element(s) wound in a helix, the J2'≥1 metal wire element(s) being derived from the layer I2 consisting of the I2' metal wire elements of the precursor assembly, the main assembly forming the third split assembly, and ∘ a complementary assembly comprising a layer K2 consisting of K2'≥1 metal wire element(s) wound in a helix,the K2'≥1 metallic wire element(s) coming from the layer I2 made up of the I2' metallic wire elements of the precursor assembly.,

[0215] In these variants of the first version of this first configuration, the means for separating the transitional assembly between the upstream split assembly and the precursor assembly are arranged upstream of the means for separating the precursor assembly between the main assembly forming the third split assembly and the complementary assembly.

[0216] Advantageously, the means for separating the transient assembly between the upstream split assembly and the precursor assembly comprise means for splitting the transient assembly into: the upstream split set, and the precursor set.

[0217] Advantageously, the means for separating the precursor assembly between the main assembly forming the third split assembly and the complementary assembly comprise means for splitting the precursor assembly into: the main assembly forming the third split assembly, and the complementary assembly.

[0218] In variants of a second version of this first configuration compatible with the first configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core comprise: means for separating the transitional assembly between: a derived assembly comprising at least one layer Z2 consisting of Z2'≥1 metal wire element(s) wound in a helix, the Z2' metal wire element(s) being derived from the outer layer A2 consisting of the A2'>1 metal wire elements of the transitional assembly, an upstream split assembly comprising at least two layers comprising an inner layer G1 consisting of G1'>1 metal wire elements wound in a helix around the transitional core and an outer layer G2 consisting of G2'>1 metal wire elements wound in a helix around the inner layer G1, the G1' metal wire elements being derived from the inner layer A1 consisting of A1'>1 metal wire elements of the transitional assembly and the G2' metal wire elements being derived from the outer layer A2 consisting of A2'>1 metal wire elements of the transitional assembly,means for separating the upstream split assembly between: the first split assembly, the second split assembly, the third split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0219] In these variants of the second version of this first configuration, the means for separating the transient assembly between the derived assembly and the upstream split assembly are arranged upstream of the means for separating the upstream split assembly between the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0220] Advantageously, in these variants of the second version of this first configuration, the means for separating the transient assembly between the derived assembly and the upstream split assembly comprise means for splitting the transient assembly into the derived assembly and the upstream split assembly.

[0221] Advantageously, in these variants of the second version of this first configuration, the means for separating the upstream split assembly between the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core, comprise: means for separating the upstream split assembly between: an intermediate split assembly comprising at least one layer Q1 consisting of Q1'>1 metallic wire elements wound in a helix around the transient core, the Q1' metallic wire elements coming from the layer G1 consisting of the G1' metallic wire elements of the upstream split assembly, the second split assembly, the third split assembly, means for separating the intermediate split assembly between: the first split assembly, and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0222] In these variants of the second version of this first configuration, the means for separating the upstream split assembly between the intermediate split assembly, the second split assembly and the third split assembly are arranged upstream of the means for separating the intermediate split assembly between the first split assembly and the transient core or one or more assemblies comprising the transient core, preferably the transient core.

[0223] Advantageously, in these variants of the second version of this first configuration, the means for separating the upstream split assembly between the intermediate split assembly, the second split assembly and the third split assembly comprise means for splitting the upstream split assembly into the intermediate split assembly, the second split assembly and the third split assembly.

[0224] In a second configuration of the first and second embodiments advantageously implementing the variants described above and allowing a total reassembly of the A2' metallic wire elements of the external layer A2, the means for separating the transitional assembly between at least the first split assembly, the second split assembly, the third split assembly and the transitional core or one or more assemblies comprising the transitional core and the means for reassembling the first split assembly, the second split assembly and the third split assembly together to form the final assembly are arranged so that C2'=A2'.

[0225] In variants of a first version of this second configuration compatible with the second configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between the upstream split assembly and the third split assembly comprise means for splitting the transient assembly into the upstream split assembly and the third split assembly.

[0226] In variants of a second version of this second configuration compatible with the first configuration of the first, second and third split assemblies described above, the means for separating the transient assembly between the intermediate split assembly, the second split assembly and the third split assembly comprise means for splitting the transient assembly into the intermediate split assembly, the second split assembly and the third split assembly.

[0227] Very preferably, the means for providing the transitional assembly comprise means for assembling by twisting the A1' metal wire elements wound in a helix around the transitional core and means for assembling by twisting the A2' metal wire elements wound in a helix around the internal layer C1.

[0228] Advantageously, the means for providing the transient assembly comprise means for balancing the transient assembly.

[0229] The invention will be better understood upon reading the following description, given solely as a non-limiting example and with reference to the drawings in which: there Figure 1 is a diagram of an installation according to a first embodiment of the invention making it possible to implement a method according to a first embodiment of the invention and to manufacture the cable of the Figure 14 ; there Figure 2 is a schematic representation of the installation and process illustrated in the Figure 1 ; THE Figures 3 and 4 are diagrams of means of splitting and reassembling the installation of the Figure 1 ; there Figure 5is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a transient assembly of the process illustrated in the figures 1 And 2 ; there Figure 6 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a precursor assembly resulting from the transient assembly of the Figure 5 ; there Figure 7 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of an upstream split assembly resulting from the transient assembly of the Figure 5 ; there figure 8 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a downstream split assembly derived from the upstream split assembly of the Figure 7 ; there Figure 9 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a first split assembly from the downstream split assembly of the figure 8 ; there Figure 10is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a second split assembly from the upstream split assembly of the Figure 7 ; there Figure 11 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a main part forming the third split assembly resulting from the precursor assembly of the Figure 6 ; there Figure 12 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a complementary part from the precursor assembly of the Figure 6 ; there figure 13 is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a downstream transient assembly resulting from the reassembly of the first and second split assemblies of the figures 9 And 10 ; there Figure 14is a sectional view perpendicular to the axis of the assembly (assumed to be rectilinear and at rest) of a final assembly resulting from the reassembly of the downstream transient assembly of the figure 13 and the third split assembly of the Figure 11 ; THE figures 15 And 16 are representations analogous to those of figures 1 And 2 of an installation and a method according to a second embodiment of the invention; the figures 17 to 24 are schematic representations of installation and manufacturing process similar to those of figures 2 And 16 other embodiments of the invention. INSTALLATION AND METHOD ACCORDING TO A FIRST EMBODIMENT OF THE INVENTION

[0230] It has been represented on the Figure 1an installation for manufacturing a final assembly A comprising at least two layers and comprising here an inner layer C1 consisting of C1'>1 metal wire elements 14 wound in a helix and an outer layer C2 consisting of C2'>1 metal wire elements 14 wound in a helix around the inner layer C1. In this case, the final assembly A, shown in the Figure 14, consists of the two layers C1, C2 with C1'=7 and C2'=10. Thus, the final assembly A consists of the layers C1 and C2, in other words the final assembly A does not include any other metallic wire element than those of the layers C1 and C2. The final assembly A has a main axis Ax extending substantially parallel to the direction in which the final assembly A extends along its greatest length.Each metal wire element 14 of each layer C1, C2 describes, when the final assembly A extends in a substantially rectilinear direction, a helix-shaped trajectory around the main axis Ax substantially parallel to the substantially rectilinear direction, so that, in a section plane substantially perpendicular to the main axis Ax, the distance between the center of each metal wire element 14 of the inner layer C1 and the main axis Ax is substantially constant and equal for all the metal wire elements 14 of the inner layer C1 and each metal wire element 14 of the outer layer C2 and the main axis Ax is substantially constant and equal for all the metal wire elements 14 of the outer layer C2.This constant distance between the center of each wire element 14 of each layer C1, C2 and the main axis Ax is equal to half of each helix diameter of each wire element 14 of each layer C1, C2.

[0231] The installation is designated by the general reference 10. The installation 10 firstly comprises means 11 for supplying a transient assembly AT comprising at least two layers and here comprising an internal layer A1 consisting of A1'>1 metallic wire elements 14 wound in a helix around a transient core NT and an external layer A2 consisting of A2'>1 metallic wire elements 14 wound in a helix around the internal layer A1. In this case, the transient assembly AT illustrated in the Figure 5comprises the inner layer A1, the outer layer A2 and the transient core NT, the A1' metallic wire elements 14 being helically wound around the transient core NT. Here, the transient assembly AT consists of the inner layer A1, the outer layer A2 and the transient core NT.

[0232] Advantageously, A1' goes from 2 to 10 and A2' goes from 6 to 20. Here, A1'=7 and A2'=12.

[0233] Each metallic wire element 14 comprises, here is made up of a single elementary metallic monofilament of circular section, here made of carbon steel, having a diameter d1=d2 ranging from 0.05 mm to 0.50 mm, preferably from 0.10 mm to 0.48 mm and more preferably from 0.15 mm to 0.45 mm and here d1=d2=0.32 mm. The transitional core is here a textile wire element, more particularly here is a multifilament textile strand made of polyester having a count of 334 tex and a diameter equal to 0.60 mm.

[0234] The supply means 11 comprise means 12 for supplying the A1' metal wire elements 14, means 13 for supplying the A2' metal wire elements 14 and means 15 for supplying the transient core NT. The supply means 11 also comprise means 16 for assembling by twisting the A1' and A2' metal wire elements 14 together into the layers A1 and A2 of metal wire elements 14 around the transient core NT to form the transient assembly AT. In addition, the supply means 11 comprise means 20 for balancing the transient assembly AT. At the output of the means 20, each metal wire element 14 of the inner layer A1 of the transient assembly AT is here assembled at a transient pitch equal to 5.8 mm and each metal wire element 14 of the outer layer A2 of the transient assembly AT is here assembled at a transient pitch equal to 5.8 mm.The transient helix diameter of each metal wire element 14 of the inner layer A1 of the transient assembly AT is here substantially equal to 0.92 mm and the transient helix diameter of each metal wire element 14 of the outer layer A2 of the transient assembly AT is here substantially equal to 1.56 mm.

[0235] Downstream of the supply means 11, considering the direction of travel of the metal wire elements, the installation 10 comprises means 24 for separating the transient assembly AT between a first split assembly AF1, a second split assembly AF2, a third split assembly AF3 and the transient core NT or one or more assemblies comprising the transient core NT, here the transient core NT.

[0236] The first split assembly AF1 shown on the Figure 9comprises at least one layer D1 consisting of D1'≥1 metallic wire element(s) 14 wound in a helix, the D1' metallic wire element(s) 14 being derived from the internal layer A1 consisting of A1'>1 metallic wire elements 14 of the transitional assembly AT. In this case, the first fractional assembly AF1 consists of the layer D1 consisting of D1'=4 metallic wire elements 14 wound in a helix.

[0237] The second split assembly AF2 shown on the Figure 10comprises at least two layers E1, E2 comprising an inner layer E1 consisting of E1'≥1 metal wire elements 14 wound in a helix and an outer layer E2 consisting of E2'≥1 metal wire elements 14 wound in a helix around the inner layer E1. Here E1'=3 and E2'=5. The E1' metal wire elements 14 come from the inner layer A1 of the transient assembly AT and the E2' metal wire elements 14 come from the outer layer A2 of the transient assembly AT. In this case, the second split assembly 27 consists of the layers E1 and E2.

[0238] The third split assembly AF3 shown on the Figure 11comprises at least one layer F2 consisting of F2'≥ 1 metallic wire element(s) 14 wound in a helix, the F2' metallic wire element(s) 14 being derived from the external layer A2 consisting of A2'>1 metallic wire elements 14 of the transitional assembly AT. In this case, the third fractional assembly AF3 is made up of the layer F2 consisting of F2'=5 metallic wire elements 14 wound in a helix.

[0239] Downstream of the supply means 11, the means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprise means 29 for separating the transient assembly AT between an upstream split assembly EG and the third split assembly AF3.

[0240] The upstream split assembly EG illustrated on the Figure 7comprises at least two layers G1, G2 comprising an inner layer G1 consisting of G1'≥1 metallic wire element(s) 14 wound in a helix around the transient core NT and an outer layer G2 consisting of G2'≥1 metallic wire element(s) 14 wound in a helix around the inner layer G1. The G1' metallic wire element(s) 14 come from the inner layer A1 consisting of A1'>1 metallic wire elements 14 of the transient assembly AT. The G2' metallic wire element(s) 14 come from the outer layer A2 consisting of A2'>1 metallic wire elements 14 of the transient assembly AT. The fractional set EG here comprises the inner layer G1, the outer layer G2 and the transient core NT, the G1'≥1 metallic wire element(s) 14 being wound in a helix around the transient core NT.In this case, the upstream fractionated assembly EG consists of the two layers G1, G2 with G1'=7 and G2'=5 and the transient core NT, the G1'≥1 metallic wire elements 14 being wound in a helix around the transient core NT.

[0241] The means 29 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 comprise means 30 for separating the transient assembly AT between a precursor assembly EP2 and the upstream split assembly EG. In this case, the separation means 30 comprise means 30' for splitting the transient assembly AT into the precursor assembly EP2 and the upstream split assembly EG.

[0242] The EP2 precursor assembly illustrated on the Figure 6comprises at least one layer I2 consisting of I2'>1 metal wire elements 14 wound in a helix, the I2' metal wire elements 14 coming from the external layer A2 consisting of the A2' metal wire elements 14 of the transitional assembly AT. In this case, the precursor assembly EP2 is made up of the layer I2 consisting of I2'=7 metal wire elements 14 wound in a helix.

[0243] The means 29 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 also comprise means 31 for separating the precursor assembly EP2 between a main assembly EM2 forming the third split assembly AF3 and a complementary assembly ES2. In this case, the separation means 31 comprise means 31' for splitting the precursor assembly EP2 into the main assembly EM2 forming the third split assembly AF3 and the complementary assembly ES2.

[0244] The EM2 main assembly shown on the Figure 11 comprises a layer J2 consisting of J2'≥1 metallic wire element(s) 14 wound in a helix, the J2'≥1 metallic wire element(s) 14 being derived from the layer I2 consisting of the I2' metallic wire elements 14 of the precursor assembly EP2. In this case, the main assembly EM2 is made up of the layer J2 consisting of F2'=J2'=5 metallic wire elements 14 wound in a helix.

[0245] The ES2 add-on set shown in the Figure 12 comprises a layer K2 consisting of K2'≥1 metallic wire element(s) 14 wound in a helix, the K2'≥1 metallic wire element(s) being derived from the layer I2 consisting of the I2' metallic wire elements 14 of the precursor assembly EP2. In this case, the complementary assembly ES2 is made up of the layer K2 consisting of K2'=2 metallic wire elements 14 wound in a helix.

[0246] Downstream of the supply means 11, the means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprise means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT.

[0247] The means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT comprise means 33 for separating the upstream split assembly EG between a downstream split assembly EH and the second split assembly AF2. In this case, the means 33 for separating comprise means 33' for splitting the upstream split assembly EG into the downstream split assembly EH and the second split assembly AF2.

[0248] The downstream EH split assembly illustrated on the figure 8 comprises at least one layer H1 consisting of H1'≥1 metallic wire element(s) 14 wound in a helix around the transient core NT, the H1' metallic wire element(s) 14 being derived from the inner layer G1 consisting of the G1' metallic wire elements 14 of the upstream split assembly EG. The downstream split assembly EH comprises the inner layer G1 and the transient core NT, the H1'≥1 metallic wire element(s) 14 being wound in a helix around the transient core NT. In this case, the downstream split assembly EH is made up of the layer H1 consisting of H1'=4 metallic wire elements 14 and the transient core NT, the H1'≥1 metallic wire elements 14 being wound in a helix around the transient core NT.

[0249] The means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT also comprise means 34 for separating the downstream split assembly EH between the first split assembly AF1 and the transient core NT. In this case, the separation means 34 comprise means 34' for splitting the downstream split assembly EH into the first split assembly AF1 and the transient core NT.

[0250] It will be noted that the means 29 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 are arranged upstream of the means 32 for separating the upstream split assembly between the first split assembly AF1, the second split assembly AF3 and the transient core NT. The means 33 for separating the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2 are arranged upstream of the means 34 for separating the downstream split assembly EH between the first split assembly AF1 and the transient core NT. The means 30 for separating the transient assembly AT between the upstream split assembly EG and the precursor assembly EP2 are arranged upstream of the means 31 for separating the precursor assembly EP2 between the main assembly EM2 forming the third split assembly AF3 and the complementary assembly ES2.

[0251] Downstream of the separation means 29, 30, 31, 32, 33 and 34, the installation 10 comprises means 35 for reassembling the first split assembly AF1, the second split assembly AF2 and the third split assembly AF3 together to form the final assembly A.

[0252] The reassembly means 35 comprise means 36 for upstream reassembly of the first split assembly AF1 with the second split assembly AF2 to form a downstream transient assembly ATF.

[0253] The ATF downstream transient assembly shown in the figure 13comprises at least two layers B1, B2 comprising an inner layer B1 consisting of C1'=B1'>1 helically wound metal wire elements 14 forming the inner layer C1 consisting of C1' helically wound metal wire elements 14 and an outer layer B2 consisting of B2'>1 helically wound metal wire elements 14 forming a part of the outer layer C2 consisting of C2' helically wound metal wire elements 14. In this case, the ATF downstream transitional assembly consists of the inner layer B1 and the outer layer B2.

[0254] The reassembly means 35 also comprise means 37 for downstream reassembly of the downstream transitional assembly ATF with the third split assembly AF3 to form the final assembly A.

[0255] In this case, due to the elastic return of each metal wire element 14 in response to the twisting step, the pitch of each metal wire element 14 of the inner layer C1 of the transient assembly AT changes from the transient pitch equal to 5.8 mm to the pitch p1 here equal to 7.8 mm and the pitch of each metal wire element 14 of the outer layer C2 of the transient assembly AT changes from the transient pitch equal to 5.8 mm to the pitch p2 equal to the pitch p1 or 7.8 mm. A person skilled in the art will be able to determine which transient pitches to apply in order to obtain the desired pitches p1, p2.

[0256] Each helix diameter ϕ1, ϕ2 of each metal wire element 14 in the final assembly is here substantially greater than the transient helix diameter of each wire element 14 in the transient assembly AT and this due to the elastic return. Each helix diameter ϕ1, ϕ2 of each metal wire element 14 in the final assembly is all the more greater than the transient helix diameter of each wire element 14 in the transient assembly AT as the twisting rate is high. A person skilled in the art will be able to determine which transient helix diameter to apply in order to obtain each desired helix diameter ϕ1, ϕ2, and this depending on the twisting rate and the nature of the transient core.

[0257] The supply means 11, the separation means 24 and the reassembly means 35 are arranged so that, on the one hand, all the C1' metallic wire elements 14 have the same diameter d1=0.32 mm, are wound in a helix with the same pitch p1=7.8 mm and have the same helix diameter ϕ1=0.95 mm and on the other hand, all the C2' metallic wire elements have the same diameter d2=0.32 mm, are wound in a helix with the same pitch p2=7.8 mm and have the same helix diameter ϕ2=1.62 mm. Thus, in this first embodiment, the separation means 24 and the reassembly means 35 are arranged so that D1'+E1'=A1' and E2'+F2'≤A2' and here so that E2'+F2' <A2'. En particulier, dans ce premier mode de réalisation, les moyens de séparation 24 et les moyens 35 de réassemblage sont agencés de sorte que C1'=A1' et C2'≤A2' et ici de sorte que C2'<A2'.

[0258] Downstream of the reassembly means 35, 36 and 37, considering the direction of travel of the metal wire elements 14, the installation 10 comprises means 38, 38' for maintaining the rotation respectively of the final assembly A and of the complementary assembly ES2 around their direction of travel.

[0259] Downstream of the rotation maintenance means 38, 38' considering the direction of travel of the metal wire elements 14, the installation 10 comprises balancing means 39, 39' respectively of the final assembly A and of the complementary assembly ES2.

[0260] Downstream of the balancing means 39, 39', considering the direction of travel of the metal wire elements 14, the installation 10 comprises means 40, 40' for storing respectively the final assembly A and the complementary assembly ES2.

[0261] The installation 10 also comprises means for guiding G, unwinding D and traction T of the wire elements, assemblies and assemblies conventionally used by those skilled in the art, for example pulleys and capstans.

[0262] The supply means 12 here comprise seven coils 41 for storing the A1' metallic wire elements. The supply means 13 here comprise twelve coils 41 for storing the A2' metallic wire elements. The supply means 15 comprise a coil 41 for storing the transient core NT. On the Figure 1 , only four of the seven and twelve coils 41 are shown for clarity of the figure.

[0263] The assembly means 16 comprise distributors 42, 42' and assembly grains 44, 44'. The assembly means 16 comprise means 46 for twisting the A1' and A2' wire elements 14 and the transitional core NT. The twisting means 46 comprise a twister 48, also commonly called a "twister" by those skilled in the art, for example a four-pulley twister. Downstream of these twisting means 46, the balancing means 20 comprise a twister 50, for example a four-pulley twister. Finally, downstream of the twister 48, the assembly means 16 comprise a lyre 52 as well as a nacelle 53 carrying the final balancing means 39 and the storage means 40. The lyre 52 and the nacelle 53 are mounted to be mobile in rotation so as to maintain the assembly pitch of the final assembly A. The installation 10 also includes a lyre 52' and a nacelle 53' for the complementary assembly ES2.

[0264] It has been represented on the Figure 3the splitting means 30'. The transient assembly AT moves along an upstream direction of travel X. After passing through the splitting means 30', the upstream split assembly EG moves along a downstream direction of travel X2 and the precursor assembly EP2 moves along a downstream direction X1. The splitting means 30' comprise guide means 57 allowing, on the one hand, the translation of the upstream split assembly EG and precursor assembly EP2 respectively along the downstream directions X2, X1 and, on the other hand, the rotation of the upstream split assembly EG and precursor assembly EP2 respectively around the downstream directions X2, X1. In this case, the means 57 comprise an inclined rotating roller 60. The splitting means 31', 33' and 34' are similar to the splitting means 30' described above. During the process, the precursor assembly EP2 comes into contact with the roller 60 downstream of the fractionation point between the upstream fractionated assemblies EG and precursor EP2.

[0265] It has been represented on the Figure 4the reassembly means 36. The first split assembly AF1 moves along an upstream travel direction Y1. The second split assembly AF2 moves along an upstream travel direction Y2. The downstream transitional assembly ATF moves along a downstream travel direction Y. The reassembly means 36 comprise guide means 59 allowing, on the one hand, the translation of the first and second split assemblies AF1, AF2 respectively along the downstream directions Y1, Y2 and, on the other hand, the rotation of the first and second split assemblies AF1, AF2 respectively around the downstream directions Y1, Y2. In this case, the means 59 comprise an inclined rotating roller 61. During the method, the first split assembly AF1 comes into contact with the roller 61 upstream of the point of reassembly of the first and second split assemblies AF1, AF2 with each other. The reassembly means 37 are analogous to the reassembly means 36 described above.

[0266] The rotation maintenance means 38, 38' comprise twisters 62, 62', for example four-pulley twisters for maintaining the rotation of the final assembly A respectively around the downstream direction. The final balancing means 39, 39' also comprise twisters 63, 63', for example four-pulley twisters. The storage means 40, 40' here comprise storage reels 64, 64' respectively for the final assembly A and the complementary part ES2.

[0267] In order to recycle the transient core NT, the installation 10 comprises means G for guiding the transient core NT between, on the one hand, an outlet 68 of the separation means 24, here downstream of the fractionation means 34, and on the other hand, an inlet 70 in the assembly means 16.

[0268] It will be noted that the installation 10 is devoid of pre-forming means, in particular means of individual pre-forming of the wire elements 14 arranged upstream of the assembly means 16.

[0269] The various means 24, 29, 30, 30', 31, 31', 32, 33, 33', 34, 34', 35, 36, 37 as well as the various assemblies and sets A, AT, ATF, AF1, AF2, AF3, EG, EH, EP2, EM2, ES2, NT are shown schematically on the Figure 2 on which the arrows indicate the direction of movement of these assemblies and sets from downstream to upstream.

[0270] We will now describe the method according to the first embodiment making it possible to implement the installation 10 described above. The method makes it possible to manufacture the final assembly A described above.

[0271] First, the wire elements 14 and the transient core NT are unwound from the supply means 12, 13 and 15, here the coils 41.

[0272] Then, the method comprises a step 100 of providing the transient assembly AT comprising on the one hand a step of assembly by twisting the A1', A2' metallic wire elements 14 into two layers A1, A2 around the transient core NT and on the other hand, a step of balancing the transient assembly AT carried out using the twister 50.

[0273] The method comprises a step 124 of separating the transient assembly NT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT or one or more sets comprising the transient core NT, here the transient core NT.

[0274] Downstream of the supply step 100, the step 124 of separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 129 of separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3.

[0275] The step 129 of separating the transient assembly AT between the upstream fractionated assembly EG and the third fractionated assembly AF3 comprises a step 130 of separating the transient assembly AT between the precursor assembly EP2 and the upstream fractionated assembly EG. In this case, the separation step 130 comprises a step 130' of fractionating the transient assembly AT into the precursor assembly EP2 and the upstream fractionated assembly EG.

[0276] The step 129 of separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 also comprises a step 131 of separating the precursor assembly EP2 between the main assembly EM2 forming the third split assembly AF3 and the complementary assembly ES2. In this case, the separation step 131 comprises a step 131' of splitting the precursor assembly EP2 into the main assembly EM2 forming the third split assembly AF3 and the complementary assembly ES2.

[0277] Downstream of the supply step 100, the step 124 of separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprises a step 132 of separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT.

[0278] The step 132 of separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT comprises a step 133 of separating the upstream split assembly EG between a downstream split assembly EH and the second split assembly AF2. In this case, the separation step 133 comprises a step 133' of splitting the upstream split assembly EG into the downstream split assembly EH and the second split assembly AF2.

[0279] The step 132 of separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT also comprises a step 134 of separating the downstream split assembly EH between the first split assembly AF1 and the transient core NT. In this case, the separation step 134 comprises a step 134' of splitting the downstream split assembly EH into the first split assembly AF1 and the transient core NT.

[0280] It will be noted that step 129 of separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 takes place upstream of step 132 of separating the upstream split assembly between the first split assembly AF1, the second split assembly AF3 and the transient core NT. Step 133 of separating the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2 takes place upstream of step 134 of separating the downstream split assembly EH between the first split assembly AF1 and the transient core NT. Step 130 of separating the transient assembly AT between the upstream split assembly EG and the precursor assembly EP2 takes place upstream of step 131 of separating the precursor assembly EP2 between the main assembly EM2 forming the third split assembly AF3 and the complementary assembly ES2.

[0281] Downstream of each separation step 129, 130, 131, 132, 133 and 134, the method comprises a step 135 of reassembling the first split assembly AF1, the second split assembly AF2 and the third split assembly together to form the final assembly A.

[0282] The reassembly step 135 comprises a step 136 of upstream reassembly of the first split assembly AF1 with the second split assembly AF2 to form the downstream transient assembly ATF. The reassembly step 135 also comprises a step 137 of downstream reassembly of the downstream transient assembly ATF with the third split assembly AF3 to form the final assembly A.

[0283] In this embodiment, the supply step 100, the separation step 124 and the reassembly step 135 are carried out so that, on the one hand, all the C1' metal wire elements 14 have the same diameter d1=0.32 mm, are wound in a helix with the same pitch p1=7.8 mm and have the same helix diameter ϕ1=0.95 mm and on the other hand, all the C2' metal wire elements have the same diameter d2=0.32 mm, are wound in a helix with the same pitch p2=7.8 mm and have the same helix diameter ϕ2=1.62 mm.

[0284] Thus, in this first embodiment allowing a total reassembly of the A1' metallic wire elements and a partial reassembly of the A2' metallic wire elements, the separation step 124 and the reassembly step 135 are carried out so that D1'+E1'=A1' and E2'+F2'≤A2' and here so that E2'+F2' <A2'. En particulier, dans ce premier mode de réalisation, l'étape 124 de séparation et l'étape 135 de réassemblage sont réalisées de sorte que C1'=A1' et C2'≤A2' et ici de sorte que C2'<A2'.

[0285] Furthermore, it should be noted that A1'≥G1', A2'≥F2'+G2', A2'≥I2'+G2', G1'≥D1', G2'≥E2', G1'≥H1'+E1', H1'≥D1', J2'=F2' and I2'≥J2'+K2'. In this case, G1'=H1'+E1', G2'=E2', H1'=D1', A1'=G1', A2'=I2'+G2' and I2'=J2'+K2'.

[0286] Finally, it should be noted that, in order to facilitate the exit from the transient core, D1'=1 or 2 in cases where A1'=4 or A1'=5 and D1' ≤ 0.75 x A1' and preferably D1' ≤ 0.70 x A1' in cases where A1'≥6. Here A1'=7, and D1'=4<0.7 x 4=4.2.

[0287] In addition, the method comprises steps of maintaining the rotation of the final assembly A and the complementary assembly ES2 around their respective running directions. These maintenance steps are carried out downstream of the step of separating the transient assembly AT using the means 38 and 38'.

[0288] A final balancing step is carried out using means 39 and 39'.

[0289] Finally, the final assembly A and the complementary assembly ES2 are stored in the storage reels 64, 64'.

[0290] Concerning the transient core NT, the method comprises a step of recycling the transient core NT. During this recycling step, the transient core NT is recovered downstream of the separation step 124, here downstream of the separation step 134, and the transient core NT recovered previously is introduced upstream of the assembly step. This recycling step is continuous.

[0291] It will be noted that the method thus described is devoid of steps of individual pre-formation of each of the metallic wire elements 14. INSTALLATION AND METHOD ACCORDING TO A SECOND EMBODIMENT OF THE INVENTION

[0292] We will now describe an installation and a method according to the second embodiment of the invention with reference to: figures 15 And 16 . Elements similar to those of the first embodiment are designated by identical references.

[0293] Unlike the first embodiment, the means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT and the means 35 for reassembling the first split assembly AF1 with the second split assembly AF2 and the third split assembly AF3 are arranged so that E2'+F2'=A2' and here so that C2'=A2'. Similarly, the step 124 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT and the step 135 for reassembling the first split assembly AF1 with the second split assembly AF2 and the third split assembly AF3 are carried out so that E2'+F2'=A2' and here so that C2'=A2'.

[0294] In this case, the means 29 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 comprise means 30' for splitting the transient assembly AT into the upstream split assembly EG and the third split assembly AF3. Similarly, the step 129 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 comprises a step 130' for splitting the transient assembly AT into the upstream split assembly EG and the third split assembly AF3.

[0295] The other means and steps are deduced mutatis mutandis of those of the first embodiment. INSTALLATION AND METHOD ACCORDING TO A THIRD EMBODIMENT OF THE INVENTION

[0296] We will now describe an installation and a method according to the third embodiment of the invention with reference to the Figure 17. Elements similar to those of the preceding embodiments are designated by identical references.

[0297] Unlike the first embodiment, the means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT comprise means 38 for separating the upstream split assembly EG between a downstream split assembly EH and the first split assembly AF1. In this case, the separation means 38 comprise means 38' for splitting the upstream split assembly EG into a downstream split assembly EH and the first split assembly AF1. Similarly, the step 132 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT comprises a step 138 for separating the upstream split assembly EG between the downstream split assembly EH and the first split assembly AF1.In this case, the separation step 138 comprises a step 138' of splitting the upstream split assembly EG into the downstream split assembly EH and the first split assembly AF1.

[0298] The downstream split assembly EH comprises at least two layers H1, H2 comprising an inner layer H1 consisting of H1'≥1 metal wire element(s) 14 wound in a helix around the transient core NT and an outer layer H2 consisting of H2'≥1 metal wire element(s) 14 wound in a helix around the inner layer H1. The H1' metal wire element(s) 14 come from the inner layer G1 consisting of G1'>1 metal wire element(s) 14 of the upstream split assembly EG and the H2' metal wire element(s) 14 come from the outer layer G2 consisting of G2'>1 metal wire element(s) 14 of the upstream split assembly EG. The downstream split assembly comprises the inner layer H1, the outer layer H2 and the transient core, the metallic wire element(s) H1' being helically wound around the transient core.Here, the downstream fractionated assembly EH consists of the inner layer H1, the outer layer H2 and the transient core, the metallic wire element(s) H1' being wound in a helix around the transient core. In this case, H1'=3 and H2'=5.

[0299] Unlike the first embodiment, the means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT also comprise means 39 for separating the downstream split assembly EH between the second split assembly AF2 and the transient core NT. In this case, the separation means 39 comprise means 39' for splitting the downstream split assembly EH into the second split assembly AF2 and the transient core NT. Similarly, the step 132 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT also comprises a step 139 for separating the downstream split assembly EH between the second split assembly AF2 and the transient core NT.In this case, the separation step 139 comprises a step 139' of fractionation of the downstream fractionated assembly EH into the second fractionated assembly AF2 and the transient core NT.

[0300] The means 38 for separating the upstream split assembly EG between the downstream split assembly EH and the first split assembly AF1 are arranged upstream of the means 39 for separating the downstream split assembly EH between the second split assembly AF2 and the transient core NT. Similarly, the step 138 for separating the upstream split assembly EG between the downstream split assembly EH and the first split assembly AF1 takes place upstream of the step 139 for separating the downstream split assembly EH between the second split assembly AF2 and the transient core NT.

[0301] Note that in this third embodiment, we have G1'≥H1'+D1', G2'≥H2', H1'≥E1', H2'≥E2' and here G1'=H1'+D1', G2'=H2', H1'=E1' and H2'=E2'.

[0302] The other means and steps are deduced mutatis mutandis of those of the previous embodiments. INSTALLATION AND METHOD ACCORDING TO A FOURTH EMBODIMENT OF THE INVENTION

[0303] We will now describe an installation and a method according to the fourth embodiment of the invention with reference to the figure 18 . Elements similar to those of the preceding embodiments are designated by identical references.

[0304] The differences between the fourth embodiment and the second embodiment are the same as between the third embodiment and the first embodiment. The means and steps are therefore deduced mutatis mutandis of those of the previous embodiments. INSTALLATION AND METHOD ACCORDING TO A FIFTH EMBODIMENT OF THE INVENTION

[0305] An installation and a method according to the fifth embodiment of the invention will now be described with reference to the figure 19. Elements similar to those of the preceding embodiments are designated by identical references.

[0306] Unlike the first embodiment, the means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT and the means 35 for reassembling the first split assembly AF1 with the second split assembly AF2 and the third split assembly AF3 are arranged so that D1'+E1' <A1' et E2'+F2'≤A2' et ici de sorte que D1'+E1'<A1' et E2'+F2'<A2'. En particulier, les moyens 24 de séparation et les moyens 35 de réassemblage sont agencés de sorte que C1'<A1' et C2'≤A2' et ici de sorte que C1'<A1' et C2'<A2'.Similarly, step 124 of separating the transient assembly AT into the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT and step 135 of reassembling the first split assembly AF1 with the second split assembly AF2 and the third split assembly AF3 are performed so that D1'+E1' <A1' et E2'+F2'≤A2' et ici de sorte que D1'+E1'<A1' et E2'+F2'<A2'. En particulier, l'étape 124 de séparation et l'étape 135 de réassemblage sont réalisées de sorte que C1'<A1' et C2'≤A2' et ici de sorte que C1'<A1' et C2'<A2'.

[0307] Unlike the first embodiment, the means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT comprise means 40 for separating the upstream split assembly EG between a precursor assembly EP1, the second split assembly AF2 and the transient core NT. Similarly, the step 132 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT comprises a step 140 for separating the upstream split assembly E between the precursor assembly EP1, the second split assembly AF2 and the transient core NT.

[0308] The precursor assembly EP1 comprises at least one layer I1 consisting of I1'>1 metal wire elements 14 wound in a helix. The I1' metal wire elements 14 come from the internal layer G1 consisting of the G1' metal wire elements 14 of the upstream fractionated assembly EG. Here, the precursor assembly EP1 consists of the layer I1 consisting of the I1'=4 metal wire elements.

[0309] Unlike the first embodiment, the means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT also comprise means 42 for separating the precursor assembly EP1 between a main assembly EM1 forming the first split assembly AF1 and a complementary assembly ES1. In this case, the separation means 42 comprise means 42' for splitting the precursor assembly EP1 into the main assembly EM1 forming the first split assembly AF1 and the complementary assembly ES1.Similarly, the step 132 of separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT also comprises a step 142 of separating the precursor assembly EP1 between the main assembly EM1 forming the first split assembly AF1 and the complementary assembly ES1. In this case, the separation step 132 comprises a step 142' of splitting the precursor assembly EP1 into the main assembly EM1 forming the first split assembly AF1 and the complementary assembly ES1.

[0310] The main assembly EM1 comprises at least one layer J1 consisting of J1'≥1 metallic wire element(s) 14 wound in a helix. The J1'≥1 metallic wire element(s) 14 come from the layer I1 consisting of the I1'>1 metallic wire elements 14 of the precursor assembly EP1. Here, the main assembly EM1 forming the first split assembly AF1 consists of the layer J1 consisting of the J1'=2 metallic wire element(s).

[0311] The complementary set ES1 comprises at least one layer K1 consisting of K1'≥1 metallic wire element(s) 14 wound in a helix. The K1'≥1 metallic wire element(s) 14 come from the layer I1 consisting of the I1'>1 metallic wire elements 14 of the precursor set EP1. The complementary set ES1 consists of the layer K1 consisting of the K1'=2 metallic wire element(s).

[0312] The means 40 for separating the upstream split assembly EG between the precursor assembly EP1, the second split assembly AF2 and the transient core NT comprise the means 33 for separating the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2. In this case, the separation means 33 comprise the means 33' for splitting the upstream split assembly EG into the downstream split assembly EH and the second split assembly AF2. Similarly, the step 140 for separating the upstream split assembly EG between the precursor assembly EP1, the second split assembly AF2 and the transient core NT comprises a step 133 for separating the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2.In this case, the separation step 133 comprises a step 133' of splitting the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2.

[0313] The means 40 for separating the upstream fractionated assembly EG between the precursor assembly EP1, the second fractionated assembly AF2 and the transient core NT also comprise means 41 for separating the downstream fractionated assembly EH between the precursor assembly EP1 and the transient core NT. In this case, the separation means 41 comprise means 41' for splitting the downstream fractionated assembly EH into the precursor assembly EP1 and the transient core NT. Similarly, the step 140 for separating the upstream fractionated assembly EG between the precursor assembly EP1, the second fractionated assembly AF2 and the transient core NT comprises a step 141 for separating the downstream fractionated assembly EH between the precursor assembly EP1 and the transient core NT. In this case, the separation step 141 comprises a step 141' for splitting the downstream fractionated assembly EH into the precursor assembly EP1 and the transient core NT.

[0314] The means 29 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 are arranged upstream of the means 32 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT. Similarly, the step 129 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 takes place upstream of the step 132 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2 and the transient core NT.

[0315] The means 40 for separating the upstream split assembly EG between the precursor assembly EP1, the second split assembly AF2 and the transient core NT are arranged upstream of the means 42 for separating the precursor assembly EP1 between the main assembly EM1 forming the first split assembly AF1 and the complementary assembly ES1. Similarly, the step 140 for separating the upstream split assembly EG between the precursor assembly EP1, the second split assembly AF2 and the transient core NT takes place upstream of the step 142 for separating the precursor assembly EP1 between the main assembly EM1 forming the first split assembly AF1 and the complementary assembly ES1.

[0316] The means 33 for separating the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2 are arranged upstream of the means 41 for separating the downstream split assembly EH between the precursor assembly EP1 and the transient core NT. Similarly, the step 133 for separating the upstream split assembly EG between the downstream split assembly EH and the second split assembly AF2 takes place upstream of the step 141 for separating the downstream split assembly EH between the precursor assembly EP1 and the transient core NT.

[0317] It will be noted that in this fifth embodiment, we have A1'≥G1', G1'≥D1',, D1'=J1', I1'=J1'+K1', H1'=I1', G1'=H1'+E1', A2'≥F2'+G2', A2'≥I2'+G2', I2'≥J2'+K2', G2'=E2', J2'=F2'.

[0318] The other means and steps are deduced mutatis mutandis of those of the previous embodiments. INSTALLATION AND METHOD ACCORDING TO A SIXTH EMBODIMENT OF THE INVENTION

[0319] An installation and a method according to the sixth embodiment of the invention will now be described with reference to the figure 20 . Elements similar to those of the preceding embodiments are designated by identical references.

[0320] Unlike the fifth embodiment, means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT and the means 35 for reassembling the first split assembly AF1 with the second split assembly AF2 and the third split assembly AF3 are arranged so that E2'+F2'=A2'. In particular, the separation means 24 and the reassembly means 35 are arranged so that C2'=A2'. Similarly, step 124 of separating the transient assembly AT into the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT and step 135 of reassembling the first split assembly AF1 with the second split assembly AF2 and the third split assembly AF3 are performed so that E2'+F2'=A2'.In particular, separation step 124 and reassembly step 135 are performed such that C2'=A2'.

[0321] In this case, the means 29 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 comprise means 30' for splitting the transient assembly AT into the upstream split assembly EG and the third split assembly AF3. Similarly, the step 129 for separating the transient assembly AT between the upstream split assembly EG and the third split assembly AF3 comprises a step 130' for splitting the transient assembly AT into the upstream split assembly EG and the third split assembly AF3.

[0322] The other means and steps are deduced mutatis mutandis of those of the first embodiment. INSTALLATION AND METHOD ACCORDING TO A SEVENTH EMBODIMENT OF THE INVENTION

[0323] An installation and a method according to the seventh embodiment of the invention will now be described with reference to the figure 21 . Elements similar to those of the preceding embodiments are designated by identical references.

[0324] Unlike the fifth embodiment, the means 40 for separating the upstream split assembly EG between the precursor assembly EP1, the second split assembly AF2 and the transient core NT comprise means 43 for separating the upstream split assembly EG between a downstream split assembly EH similar to the downstream split assembly EH of the third embodiment of the Figure 17and the precursor assembly EP1. In this case, the separation means 43 comprise means 43' for splitting the upstream split assembly EG into a downstream split assembly EH and the precursor assembly EP1. Similarly, the step 140 of separating the upstream split assembly EG between the precursor assembly EP1, the second split assembly AF2 and the transient core NT comprises a step 143 of separating the upstream split assembly EG between a downstream split assembly EH and the precursor assembly EP1. In this case, the separation step 43 comprises a step 143' of splitting the upstream split assembly EG into a downstream split assembly EH and the precursor assembly EP1.

[0325] Unlike the fifth embodiment, the means 40 for separating the upstream fractionated assembly EG between the precursor assembly EP1, the second fractionated assembly AF2 and the transient core NT also comprise means 39 for separating the downstream fractionated assembly EH between the second fractionated assembly AF2 and the transient core NT. These separation means 39, the fractionation means 39' as well as the separation steps 139 and fractionation steps 139' are similar to those of the third embodiment of the Figure 17 .

[0326] The other means and steps are deduced mutatis mutandis of those of the previous embodiments. INSTALLATION AND METHOD ACCORDING TO AN EIGHTH EMBODIMENT OF THE INVENTION

[0327] An installation and a method according to the eighth embodiment of the invention will now be described with reference to the figure 22. Elements similar to those of the preceding embodiments are designated by identical references.

[0328] The differences between the eighth embodiment and the sixth embodiment are the same as between the seventh embodiment and the fifth embodiment. The means and steps are therefore deduced mutatis mutandis of those of the previous embodiments. INSTALLATION AND METHOD ACCORDING TO A NINTH EMBODIMENT OF THE INVENTION

[0329] An installation and a method according to the ninth embodiment of the invention will now be described with reference to the figure 23 . Elements similar to those of the preceding embodiments are designated by identical references.

[0330] Just as in the second and fourth embodiments, the separation means 24 and the reassembly means 35 are arranged so that C1'=A1' and C2'=A2'. Similarly, the separation step 124 and the reassembly step 135 are carried out so that C1'=A1' and C2'=A2'.

[0331] Unlike the previous embodiments, the first split assembly consists of layer D1 with here D1'=7, the second split assembly consists of layer E2 with here E2'=5 and the third split assembly consists of layer F2 with here F2'=7. In this ninth embodiment, we therefore have D1'=C1' and E2'+F2'=C2'.

[0332] Unlike the previous embodiments, the reassembly means 35 comprise means 35' for simultaneously reassembling the first, second and third split assemblies AF1, AF2, AF3 to form the final assembly A. Similarly, the reassembly step 135 comprises a step 135' for simultaneously reassembling the first, second and third split assemblies AF1, AF2, AF3 to form the final assembly A.

[0333] Unlike the previous embodiments, the means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprise means 80 for separating the transient assembly AT between an intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3. Here, the separation means 80 comprise means 80' for splitting the transient assembly AT into the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3.Similarly, the step 124 of separating the transient assembly AT into the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 180 of separating the transient assembly AT into the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3. Here, the separation step 180 comprises a step 180' of splitting the transient assembly AT into the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3.

[0334] The means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprise means 82 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT. Similarly, the step 124 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 182 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT.

[0335] The intermediate fractional assembly EQ comprises a layer Q1 consisting of Q1'=7 metallic wire elements 14 wound in a helix around the transient core NT, the Q1' metallic wire elements 14 coming from the internal layer A1 consisting of A1'=7 metallic wire elements 14 of the transient assembly AT. In this case, the intermediate fractional assembly EQ consists of the layer Q1 and the transient core NT, the Q1' metallic wire elements 14 being wound in a helix around the transient core NT.

[0336] The means 80 for separating the transient assembly AT between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3 are arranged upstream of the means 82 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT. Similarly, the step 180 for separating the transient assembly AT between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3 takes place upstream of the step 182 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT.

[0337] Advantageously, the means 82 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT comprise means 84 for separating the intermediate split assembly EQ between a first separate assembly EW, a second separate assembly EX and the transient core NT. Here, the separation means 84 comprise means 84' for splitting the intermediate split assembly EQ into the first separate assembly EW, the second separate assembly EX and the transient core NT. Similarly, the step 182 of separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT comprises a step 184 of separating the intermediate split assembly between the first separate assembly EW, the second separate assembly EX and the transient core NT.Here, the separation step 184 comprises a step 184' of splitting the intermediate split set EQ into the first split set EW, the second split set EX and the transient core NT.

[0338] The means 82 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT also comprise means 86 for reassembling the first separated assembly EW and the second separated assembly EX together to form the first split assembly AF1. Similarly, the step 182 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT comprises a step 186 for reassembling the first separated assembly EW and the second separated assembly EX together to form the first split assembly A.

[0339] The first separate set EW comprises at least one layer W1 consisting of W1'=4 metal wire elements 14 wound in a helix, the W1' metal wire elements being derived from the layer Q1 consisting of the Q1' metal wire elements 14 of the intermediate fractional set EQ. Here the first separate set EW consists of the layer W1.

[0340] The second separate set EX comprises at least one layer X1 consisting of X1'=3 metal wire elements 14 wound in a helix, the X1' metal wire elements being derived from the layer Q1 consisting of the Q1' metal wire elements 14 of the intermediate fractional set EQ. Here the second separate set EX consists of the layer X1.

[0341] The means 84 for separating the intermediate split assembly EQ between the first separate assembly EW, the second separate assembly EX and the transient core NT are arranged upstream of the means 86 for reassembling the first separate assembly EW and the second separate assembly EX together to form the first split assembly AF1. Similarly, the step 184 for separating the intermediate split assembly EQ between the first separate assembly EW, the second separate assembly EX and the transient core NT takes place upstream of the step 186 for reassembling the first separate assembly EW and the second separate assembly EX together to form the first split assembly AF1.

[0342] Note that in this ninth embodiment, we have C1'=A1', C2'=A2', A1'=Q1', A2'=E2'+F2', Q1'=D1' and Q1'=W1'+X1'=D1'. INSTALLATION AND METHOD ACCORDING TO A TENTH EMBODIMENT OF THE INVENTION

[0343] An installation and a method according to the tenth embodiment of the invention will now be described with reference to the figure 24 . Elements similar to those of the preceding embodiments are designated by identical references.

[0344] Unlike the ninth embodiment, the separation means 24 and the reassembly means 35 are arranged so that C1' <A1' et C2'<A2'. De façon analogue, l'étape 124 de séparation et l'étape 135 de réassemblage sont réalisées de sorte que C1'<A1' et C2'<A2'.

[0345] Unlike the previous embodiments, the means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprise means 81 for separating the transient assembly AT between a derived assembly EZ2 and an upstream split assembly EG. Here, the separation means 81 comprise means 81' for splitting the transient assembly AT into the derived assembly EZ2 and the upstream split assembly EG. Similarly, the step 124 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 181 for separating the transient assembly AT between the derived assembly EZ2 and the upstream split assembly EG.Here, the separation step 181 comprises a step 181' of splitting the transient assembly AT into the derived assembly EZ2 and the upstream split assembly EG.

[0346] The derived assembly EZ2 comprises at least one layer Z2 consisting of Z2'=2 metal wire elements 14 wound in a helix, the Z2' metal wire elements 14 being derived from the outer layer A2 consisting of the A2' metal wire elements 14 of the transient assembly AT. Here, the derived assembly EZ2 is made up of the layer Z2. The upstream fractional assembly EG comprises at least two layers comprising an inner layer G1 consisting of G1'=7 metal wire elements 14 wound in a helix around the transient core NT and an outer layer G2 consisting of G2'=10 metal wire elements 14 wound in a helix around the inner layer G1. The G1' metallic wire elements 14 come from the internal layer A1 consisting of the A1' metallic wire elements 14 of the transient assembly AT and the G2' metallic wire elements 14 come from the external layer A2 consisting of the A2' metallic wire elements 14 of the transient assembly AT.Here the fractionated set EG consists of the inner layer G1, the outer layer G2 and the transient core NT.

[0347] The means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprise means 83 for separating the transient assembly AT between an intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3. Similarly, the step 124 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 183 for separating the transient assembly AT between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3.

[0348] The intermediate fractional assembly EQ comprising at least one layer Q1 consisting of Q1'=7 metallic wire elements 14 wound in a helix around the transient core NT, the Q1' metallic wire elements 14 coming from the layer G1 consisting of the G1' metallic wire elements 14 of the upstream fractional assembly EG. Here, the intermediate fractional assembly EQ is made up of the layer Q1 and the transient core NT, the Q1' metallic wire elements 14 being wound in a helix around the transient core NT.

[0349] The means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprise means 85 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT. Similarly, the step 124 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 185 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT.

[0350] The means 24 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprise means 87 for separating the intermediate split assembly EQ between a derived assembly EZ1, the first split assembly AF1 and the transient core NT. Similarly, the step 124 for separating the transient assembly AT between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 187 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core NT.

[0351] The derived assembly EZ1 comprises at least one layer Z1 consisting of Z1'=2 metal wire elements 14 wound in a helix, the Z1' metal wire elements 14 coming from the internal layer Q1 consisting of the Q1'=7 metal wire elements 14 of the intermediate fractional assembly EQ. Here, the derived assembly EZ1 consists of the layer Z1.

[0352] The means 81 for separating the transient assembly AT between the derived assembly EZ2 and the upstream split assembly EG are arranged upstream of the means 85 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT. Similarly, the step 181 for separating the transient assembly AT between the derived assembly EZ2 and the upstream split assembly EG takes place upstream of the step 185 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT.

[0353] The means 83 for separating the transient assembly AT between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3 are arranged upstream of the means 87 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core NT. Similarly, the step 183 for separating the transient assembly AT between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3 takes place upstream of the step 187 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core NT.

[0354] The means 85 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprise means 89 for separating the upstream split assembly EG between an intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3. Here, the separation means 89 comprise means 89' for splitting the upstream split assembly EG into the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3.Similarly, the step 185 of separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT comprises a step 189 of separating the upstream split assembly EG between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3. Here, the separation step 189 comprises a step 189' of splitting the upstream split assembly EG into the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3.

[0355] The means 85 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprise means 91 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT. Similarly, the step 185 for separating the upstream split assembly EG between the first split assembly AF1, the second split assembly AF2, the third split assembly AF3 and the transient core NT also comprises a step 191 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT.

[0356] The means 89 for separating the upstream split assembly EG between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3 are arranged upstream of the means 91 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT. Similarly, the step 189 for separating the upstream split assembly EG between the intermediate split assembly EQ, the second split assembly AF2 and the third split assembly AF3 takes place upstream of the step 191 for separating the intermediate split assembly EQ between the first split assembly AF1 and the transient core NT.

[0357] The means 87 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core comprise means 93 for separating the intermediate split assembly EQ between a first separated assembly EW, a second separated assembly EX, the derived assembly EZ1 and the transient core NT. The separated assemblies EW and EX are similar to those of the ninth embodiment. Similarly, the step 187 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core NT comprises a step 193 for separating the intermediate split assembly EQ between the first separated assembly EW, the second separated assembly EX, the derived assembly EZ1 and the transient core NT.

[0358] The means 87 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core NT comprise means 86 for reassembling the first separated assembly EW and the second separated assembly EX together to form the first split assembly AF1, means identical to those of the ninth embodiment. Similarly, the step 187 for separating the intermediate split assembly EQ between the derived assembly EZ1, the first split assembly AF1 and the transient core NT comprises a step 186 for reassembling the first separated assembly EW and the second separated assembly EX together to form the first split assembly AF1.

[0359] The first separate set EW comprises at least one layer W1 consisting of W1'=3 metal wire elements 14 wound in a helix, the W1' metal wire elements 14 being derived from the layer Q1 consisting of the Q1' metal wire elements 14 of the intermediate fractional set EQ. The second separate set EX comprises at least one layer X1 consisting of X1'=2 metal wire elements 14 wound in a helix, the X1' metal wire elements 14 being derived from the layer Q1 consisting of the Q1' metal wire elements 14 of the intermediate fractional set EQ. Here, each first and second separate set EW, EX is respectively constituted of the layer W1, X1.

[0360] The means 93 for separating the intermediate split assembly EQ between the first separate assembly EW, the second separate assembly EX, the derived assembly EZ1 and the transient core NT are arranged upstream of the means 86 for reassembling the first separate assembly EW and the second separate assembly EX together to form the first split assembly AF1. Similarly, the step 193 for separating the intermediate split assembly EQ between the first separate assembly EW, the second separate assembly EX, the derived assembly EZ1, the transient core NT takes place upstream of the step 186 for reassembling the first separate assembly EW and the second separate assembly EX together to form the first split assembly AF1.

[0361] The means 93 for separating the intermediate split set EQ between the first separate set EW, the second separate set EX, the derived set EZ1, the transient core NT comprise means 95 for separating the intermediate split set EQ between the derived set EZ1 and a downstream split set EH. Here, the separation means 95 comprise means 95' for splitting the intermediate split set EQ into the derived set EZ1 and the downstream split set EH. Similarly, the step 193 for separating the intermediate split set EQ between the first separate set EW, the second separate set EX, the derived set EZ1, the transient core NT comprises a step 195 for separating the intermediate split set EQ between the derived set EZ1 and the downstream split set EH.Here the separation step 195 comprises a step 195' of splitting the intermediate split set EQ into the derived set EZ1 and the downstream split set EH.

[0362] The downstream fractionated assembly EH comprises a layer H1 consisting of H1'=5 metallic wire elements 14 wound in a helix around the transient core NT, the H1' metallic wire elements 14 coming from the layer Q1 consisting of the Q1'>1 metallic wire elements 14 of the intermediate fractionated assembly EQ. Here, the downstream fractionated assembly EH consists of the layer H1 and the transient core NT, the H1' metallic wire elements 14 being wound in a helix around the transient core NT.

[0363] The means 93 for separating the intermediate split set EQ between the first separate set EW, the second separate set EX, the derived set EZ1, the transient core NT comprise means 97 for separating the downstream split set EH between the first separate set EW, the second separate set EX and the transient core NT. Here, the separation means 97 comprise means 97' for splitting the downstream split set EH into the first separate set EW, the second separate set EX and the transient core NT. Similarly, the step 193 for separating the intermediate split set EQ between the first separate set EW, the second separate set EX, the derived set EZ1 and the transient core NT comprises a step 197 for separating the downstream split set EH between the first separate set EW, the second separate set EX, and the transient core NT.Here, the separation step 197 comprises a step 197' of splitting the downstream split set EH into the first separated set EW, the second separated set EX and the transient core NT.

[0364] The means 95 for separating the intermediate split assembly EQ between the derived assembly EZ1 and the downstream split assembly EH are arranged upstream of the means 97 for separating the downstream split assembly EH between the first separated assembly EW, the second separated assembly EX and the transient core NT. Similarly, the step 195 for separating the intermediate split assembly EQ between the derived assembly EZ1 and the downstream split assembly EH takes place upstream of the step 197 for separating the downstream split assembly EH between the first separated assembly EW, the second separated assembly EX and the transient core NT.

[0365] Just as in the ninth embodiment, the reassembly means 35 comprise means 35' for simultaneously reassembling the first, second and third split assemblies AF1, AF2, AF3 to form the final assembly A. Similarly, the reassembly step 135 comprises a step 135' for simultaneously reassembling the first, second and third split assemblies AF1, AF2, AF3 to form the final assembly A.

[0366] Note that in this tenth embodiment, we have C1' <A1', C2'<A2', A1'=G1', A2'=Z2'+G2', G1'=Q1', G2'=E2'+F2', Q1'> D1', A1'≥Q1', A2'>E2'+F2', Q1'=Z1'+D1', Q1'=W1'+X1'+Z1', Q1'=Z1'+H1', H1'=W1'+X1' and W1'+X1'=D1'.

[0367] The invention is not limited to the embodiments described above. Indeed, it is entirely possible to envisage using, without departing from the scope of the invention, a method and an installation in which the step and the means of separating the transient assembly between at least the first split assembly, the second split assembly, the third split assembly and the transient core or one or more assemblies comprising the transient core is a step or are means of separating the transient assembly between the first split assembly, the second split assembly, the third split assembly and an assembly comprising the transient core and wire elements originating from the transient assembly.

[0368] Furthermore, it will be possible to envisage, without departing from the scope of the invention, a transitional core comprising first and second parts, the first part of which would be separated with a first upstream fractionated assembly from which, after one or more separation steps, the first and second fractionated assemblies would come and the second part of which would be separated with a second upstream fractionated assembly from which, after one or more separation steps, the third fractionated assembly would come.

[0369] It will also be possible to envisage a separation step, respectively means of separation of the transient assembly in addition to the first, second and third split assemblies AF1, AF2, AF3, for example four, five or even six split assemblies. In these embodiments, the reassembly step, respectively the reassembly means may allow the reassembly of more than the first, second and third split assemblies AF1, AF2, AF3, for example the reassembly of four, five or even six split assemblies.

[0370] In the embodiments described above, the pitch p1 is equal to the pitch p2 and the winding direction of the metal wire elements of the inner layer of the final assembly is identical to the winding direction of the metal wire elements of the outer layer of the final assembly. It is also possible to envisage a final assembly in which the pitch p1 is different from the pitch p2, the winding directions of the metal wire elements of the inner layer and the outer layer of the final assembly being identical. For this purpose, a step of providing the transitional assembly will be envisaged in which the inner layer is assembled around the transitional core at a first pitch p1' during a first assembly step, then, in which, the outer layer is assembled around the inner layer at a second pitch p2' different from p1' during a second assembly step.Optionally, a storage step of the internal layer wound around the transitional core may be provided between the first and second assembly steps.

Claims

1. Method for producing a final assembly (A) comprising at least two layers (C1, C2) comprising an inner layer C1 composed of C1'>1 helically wound metallic filamentary elements (14) and an outer layer C2 composed of C2'>1 metallic filamentary elements (14) helically wound around the inner layer C1, characterized in that the method comprises: - a step (100) of providing a temporary assembly (AT) comprising at least two layers (A1, A2) comprising an inner layer A1 composed of A1'>1 metallic filamentary elements (14) helically wound around a temporary core (NT) and an outer layer A2 composed of A2'>1 metallic filamentary elements (14) helically wound around the inner layer A1, - a step (124) of separating the temporary assembly (AT) between at least: ∘ a first split assembly (AF1) comprising at least one layer D1 composed of D1'≥1 helically wound metallic filamentary element(s) (14), the D1' metallic filamentary element(s) (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT), ∘ a second split assembly (AF2) comprising at least one layer (E2) composed of E2'≥1 helically wound metallic filamentary element(s) (14), the E2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), ∘ a third split assembly (AF3) comprising at least one layer F2 composed of F2'≥1 helically wound metallic filamentary element(s) (14), the F2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), ∘ the temporary core (NT) or one or more assemblages comprising the temporary core (NT), the method comprising a step (135) of reassembling at least the first split assembly (AF1), the second split assembly (AF2) and the third split assembly (AF3) to form the final assembly (A).

2. Method according to Claim 1, wherein the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) and the step (135) of reassembling the first split assembly (AF1) with the second split assembly (AF2) and the third split assembly (AF3) are carried out such that C1'<A1' and C2'≤A2'.

3. Method according to Claim 2, wherein, the second split assembly (AF2) comprising at least two layers (E1, E2) comprising an inner layer E1 composed of E1'≥1 helically wound metallic filamentary element(s) (14) and an outer layer E2 composed of E2'≥1 metallic filamentary elements (14) helically wound around the inner layer E1, the E1' metallic filamentary element(s) (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT) and the E2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) comprises: - a step (129) of separating the temporary assembly (AT) between: - an upstream split assemblage (EG) comprising at least two layers (G1, G2) comprising an inner layer G1 composed of G1'≥1 metallic filamentary element(s) (14) helically wound around the temporary core (NT) and an outer layer G2 composed of G2'≥1 metallic filamentary element(s) (14) helically wound around the inner layer G1, the G1' metallic filamentary element(s) (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT) and the G2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), and - the third split assembly (AF3), and - a step (132) of separating the upstream split assemblage (EG) between: - the first split assembly (AF1), - the second split assembly (AF2), and - the temporary core (NT) or one or more assemblages comprising the temporary core (NT), preferably the temporary core (NT).

4. Method according to the preceeding claim, wherein the step (132) of separating the upstream split assemblage (EG) between the first split assembly (AF1), the second split assembly (AF2) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT), preferably the temporary core (NT), comprises: - a step (140) of separating the upstream split assemblage (EG) between: - a precursor assemblage (EP1) comprising at least one layer l1 composed of l1'>1 helically wound metallic filamentary elements (14), the l1' metallic filamentary elements (14) being derived from the inner layer G1 composed of the G1' metallic filamentary elements (14) of the upstream split assemblage EG, - the second split assembly (AF2), - the temporary core (NT) or one or more assemblages comprising the temporary core (NT), preferably the temporary core (NT), and - a step (142) of separating the precursor assemblage (EP1) between: - a main assemblage (EM1) comprising at least one layer J1 composed of J1'≥1 helically wound metallic filamentary element(s) (14), the J1'≥1 metallic filamentary element(s) (14) being derived from the layer l1 composed of the l1'>1 metallic filamentary elements (14) of the precursor assemblage (EP1), the main assemblage (EM1) forming the first split assembly (AF1), and - a supplementary assemblage (ES1) comprising at least one layer K1 composed of K1'≥1 helically wound metallic filamentary element(s) (14), the K1'≥1 metallic filamentary element(s) (14) being derived from the layer l1 composed of the l1'>1 metallic filamentary elements (14) of the precursor assemblage (EP1).

5. Method according to Claim 2, wherein the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) comprises: - a step (180; 183) of separating the temporary assembly (AT) between: - an intermediate split assemblage (EQ) comprising a layer Q1 composed of Q1'>1 metallic filamentary elements (14) helically wound around the temporary core (NT), the Q1' metallic filamentary elements (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT), and - the second split assembly (AF2), - the third split assembly (AF3), and - a step (187) of separating the intermediate split assemblage (EQ) between: - a derived assemblage (EZ1) comprising at least one layer Z1 composed of Z1'≥1 helically wound metallic filamentary element(s) (14), the Z1' metallic filamentary element(s) (14) being derived from the inner layer Q1 composed of the Q1'>1 metallic filamentary elements (14) of the intermediate split assemblage (EQ), - the first split assembly (AF1), and - the temporary core (NT) or one or more assemblages comprising the temporary core (NT), preferably the temporary core (NT).

6. Method according to Claim 1, wherein the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) and the step (135) of reassembling the first split assembly (AF1) with the second split assembly (AF2) and the third split assembly (AF3) are carried out such that C1'=A1' and C2'≤A2'.

7. Method according to Claim 6, wherein, the second split assembly (AF2) comprising at least two layers (E1, E2) comprising an inner layer E1 composed of E1'≥1 helically wound metallic filamentary element(s) (14) and an outer layer E2 composed of E2'≥1 metallic filamentary elements (14) helically wound around the inner layer E1, the E1' metallic filamentary element(s) (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT) and the E2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) comprises: - a step (129) of separating the temporary assembly (AT) between: - an upstream split assemblage (EG) comprising at least two layers (G1, G2) comprising an inner layer G1 composed of G1'≥1 metallic filamentary element(s) (14) helically wound around the temporary core (NT) and an outer layer G2 composed of G2'≥1 metallic filamentary element(s) (14) helically wound around the inner layer G1, the G1' metallic filamentary element(s) (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT) and the G2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), and - the third split assembly (AF3), and - a step (132) of separating the upstream split assemblage (EG) between: - the first split assembly (AF1), - the second split assembly (AF2), and - the temporary core (NT).

8. Method according to Claim 6, wherein the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) comprises: - a step (180) of separating the temporary assembly (AT) between: - an intermediate split assemblage (EQ) comprising a layer Q1 composed of Q1'>1 metallic filamentary elements (14) helically wound around the temporary core (NT), the Q1' metallic filamentary elements (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT), and - the second split assembly (AF2), - the third split assembly (AF3), and - a step (182) of separating the intermediate split assemblage (EQ) between: - the first split assembly (AF1), and - the temporary core (NT) or one or more assemblages comprising the temporary core, preferably the temporary core (NT).

9. Method according to the preceeding claim, wherein the step (182) of separating the intermediate split assemblage (EQ) between the first split assembly (AF1) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT), preferably the temporary core (NT), comprises: - a step (184) of separating the intermediate split assemblage (EQ) between: - a first separated assemblage (EW) comprising at least one layer W1 composed of W1'≥1 helically wound metallic filamentary element(s) (14), the W1' metallic filamentary element(s) (14) being derived from the layer Q1 composed of the Q1' metallic filamentary elements (14) of the intermediate split assemblage (EQ), - a second separated assemblage (EX) comprising at least one layer X1 composed of X1'≥1 helically wound metallic filamentary element(s) (14), the X1' metallic filamentary element(s) (14) being derived from the layer Q1 composed of the Q1' metallic filamentary elements (14) of the intermediate split assemblage (EQ), - the temporary core (NT) or one or more assemblages comprising the temporary core (NT), preferably the temporary core (NT), - a step (186) of reassembling the first separated assemblage (EW) and the second separated assemblage (EX) to form the first split assembly (AF1).

10. Method according to one of Claims 1 to 9, wherein the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) and the step (135) of reassembling the first split assembly (AF1), the second split assembly (AF2) and the third split assembly (AF3) are carried out such that C2'<A2'.

11. Method according to one of Claims 1 to 9, wherein the step (124) of separating the temporary assembly (AT) between the first split assembly (AF1), the second split assembly (AF2), the third split assembly (AF3) and the temporary core (NT) or one or more assemblages comprising the temporary core (NT) and the step (135) of reassembling the first split assembly (AF1), the second split assembly (AF2) and the third split assembly (AF3) are carried out such that C2'=A2'.

12. Tyre, characterized in that it comprises a final assembly (A) comprising at least two layers (C1, C2) comprising an inner layer C1 composed of C1'>1 helically wound metallic filamentary elements (14) and an outer layer C2 composed of C2'>1 metallic filamentary elements (14) helically wound around the inner layer, obtained by the method according to one of the preceding claims and in which each metallic filamentary element of each inner layer C1 and outer layer C2 is without preforming marks.

13. Installation (10) for producing a final assembly (A) comprising at least two layers (C1, C2) comprising an inner layer C1 composed of C1'>1 helically wound metallic filamentary elements (14) and an outer layer C2 composed of C2'>1 metallic filamentary elements (14) helically wound around the inner layer C1, characterized in that the installation comprises: - means (11) for providing a temporary assembly (AT) comprising at least two layers (A1, A2) comprising an inner layer A1 composed of A1'>1 metallic filamentary elements (14) helically wound around a temporary core (NT) and an outer layer A2 composed of A2'>1 metallic filamentary elements (14) helically wound around the inner layer A1, - means (24) for separating the temporary assembly (AT) between at least: ∘ a first split assembly (AF1) comprising at least one layer D1 composed of D1'≥1 helically wound metallic filamentary element(s) (14), the D1' metallic filamentary element(s) (14) being derived from the inner layer A1 composed of A1'>1 metallic filamentary elements (14) of the temporary assembly (AT), ∘ a second split assembly (AF2) comprising at least one layer (E2) composed of E2'≥1 helically wound metallic filamentary element(s) (14), the E2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), ∘ a third split assembly (AF3) comprising at least one layer F2 composed of F2'≥1 helically wound metallic filamentary element(s) (14), the F2' metallic filamentary element(s) (14) being derived from the outer layer A2 composed of A2'>1 metallic filamentary elements (14) of the temporary assembly (AT), ∘ the temporary core (NT) or one or more assemblages comprising the temporary core (NT), the installation (10) comprising: means (135) for reassembling at least the first split assembly (AF1), the second split assembly (AF2) and the third split assembly (AF3) to form the final assembly (A).