Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
  • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
  • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
  • D02G3/28—Doubled, plied, or cabled threads
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
  • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
  • D02G3/28—Doubled, plied, or cabled threads
  • D02G3/285—Doubled, plied, or cabled threads one yarn running over the feeding spool of another yarn

Definitions

• the invention relates to the technical sector of textile yarn processing machines.
• the invention relates to machines of the type of those consisting of a plurality of working positions, in particular arranged in juxtaposition. Each of them has different means capable of ensuring the transformation of the yarn in one or more stages then in its winding or winding.
• the means for advancing the wires can consist of cylinders cooperating with pressure rollers, capstans, wire guides or the like.
• the son processing means can be based on a rotation giving the son, for example, a twist on themselves or a winding of the son on each other.
• the transformation process also provides for subjecting a treatment to several wires in parallel, then assembling these wires for subsequent transformation or for winding. There is therefore an assembly of several threads transformed into neighboring positions before passing them together on other processing means and / or before returning them together.
• the wire is then called up in a second so-called “call” member, generally without slipping, ensuring the control of the speed of advance of the wire. Very often, this second call is made up by the rewinding system itself.
• FIG. 1 shows, by way of non-limiting indicative example, a machine for treating the wires having members capable of producing an assembly of several wires, according to the state of the art. It is seen from this figure that the first means of appeal and advancement of the wire (2a, 2b, 2c, 2d) are aligned and rotated by a common shaft by means of a drive member (4) . The same applies to the call and winding means (3a, 3b, 3c, 3d) which are arranged in alignment and rotated by a common shaft by means of a drive member (5).
• the assembly is carried out upstream of the first call member, since at this location, even if the absolute dispersion is greater, the relative dispersion is much lower.
• the means for guiding the wires (7a, 7b, 7c, 7d) from their position working towards the assembly point (5) are arranged before the first call means (2b), which has the following drawbacks: the installation of the different means (7a, 7b, 7c, 7d), (5 ) is in the immediate environment of the upstream wire processing assembly; - the guide members are subjected to high voltages, generating severe requirements with regard to reliability; the tension of the thread, after assembly, is equal to the sum of the tensions of each thread, so that the means of calling and winding on the assembled threads must be dimensioned to support this sum of tension; - The wires follow a long path and have several angles under high tension which, by internal friction on the guide members, causes degradation and affects the quality of the wire
• the invention aims to overcome these drawbacks in a simple, safe, effective and efficient and to solve the problem of obtaining perfect control of the assembly process son.
• the device for managing yarn assemblies in textile processing machines for said yarns, comprising upstream processing or transformation assemblies of the yarn, first means of calling and d advancement of the wire, the call and / or winding means via the wire guide.
• the device comprises members capable of producing an assembly of several wires mounted in combination with several first call and advancement means which are each driven by an individual motor, said assembly members being disposed between said first call means and one of the call and / or winding means capable of controlling the speed of advancement of the joined threads.
• each individual motor of the first call and advancement means is subject to a variable speed drive .
• the wire guides are driven by an individual motor, the call and winding means and the first call and advancement means, being driven in synchronism by the same motor.
• the speed ratio between the two means is determined by a system of pulleys.
• An improvement of the invention consists in measuring the tension of each wire by placing a sensor between the first means of calling and advancing the wire and the assembly point, and by transmitting these voltages to a computer which controls the variators. .
• the computer orders adjustments of speed of the first means of calling for adjust the measured thread tension to a preprogrammed setpoint.
• the computer takes the voltage as a reference of the wire corresponding to the position on which the wires are pulled, and orders speed readjustments of the first call members of the other positions, for example to equalize the tensions.
• yarns for technical use such as, by way of non-limiting examples: - for the manufacture of ropes, straps, technical fabrics for particular uses and having specific mechanical or physical characteristics of toughness, tensile strength, elasticity, elongation curve under load, etc .; - for the manufacture of fabrics, carpets, rugs, textile coverings, having particular aesthetic, mechanical or physical characteristics; - for the manufacture of textile reinforcements for composite materials such as elastomers, such as threads for the reinforcement of tires, toothed belts ... the said threads intended to be inserted individually, as a sheet or used in forms for example of fabrics ... and which must have specific mechanical or physical characteristics of toughness, tensile strength, elasticity, elongation curve under load, etc.
• the invention relates more particularly to methods in which the preliminary operations of transformation of the elementary wire or wires are methods of single twist, double twist, wiring or wrapping, etc.
• Certain technical characteristics of the wires such as the tensile strength , the elasticity, the elongation curve under load, the resistance to fatigue ... are obtained by the association of several wires, each undergoing individual treatments, then assembled according to perfectly controlled processes.
• the elementary wires can be identical or different, and / or undergo identical or different transformations. Depending on the case of application methods can be made to obtain an assembly equi-length and / or equitable voltage. In other cases, the assembly process may consist on the contrary to assemble wires having different elongation levels or tensions. In the following, we will designate such wires resulting from the assembly by twisting or wiring of wires of a different nature, having undergone a different treatment or supplied under different voltages by the term "hybrid wire".
• hybrid wires composed of several elementary wires which differ by their nature and by their prior treatment, such as those set out by way of example in the aforementioned patent, are most often made in two step.
• Each elementary wire is transformed separately in a first step, for example on double twist machines, and it is received individually on an intermediate spool.
• the intermediate coils are taken up on a creel supplying a machine which combines the assembly and final processing phase, such as a cabling process by twisting the assembled wires.
• This final treatment is most often carried out by a simple twisting twisting process.
• This linking method has the following drawbacks: - it requires having at least two types of machine (for example a double-twist machine for the first step, an assembly and single-twist machine for the second step); - it requires the management, storage and handling of several batches of intermediate coils; -
• the second assembly step is most often performed by simple twisting, which is a low-speed producing process, for example on a ring bench which implements coils in rotation limited in weight, and therefore requiring frequent digging. This second stage has relatively low productivity.
• the problem which the invention proposes to solve is to obtain a means of producing a hybrid wire, resulting from the assembly by twisting, wiring or wrapping of several basic wires, these basic wires being identical or different, and being themselves treated according to identical or different methods of twisting or wiring.
• One objective of the invention is to fully control the speed and / or tension of the son at the point of assembly (which and / or voltage speeds are equal or different).
• the receiving coil is processed using different means.
• At least one of the basic yarns has a low elongation capacity under load, preferably combined with a high tenacity, and of which at least one other elementary yarn has elasticity. and / or an elongation capacity under higher load, the basic threads being twisted separately to different twists, then assembled under equal or different tensions, and twisted together.
• FIG. 1 is a schematic view of a processing machine equipped with yarn assembly members according to l prior art
• - Figure 2 shows a machine according to that illustrated in Figure 1, equipped with the wire management and assembly device according to the invention and in an embodiment according to which the call and winding means and guides them -wire each driven by a collective motor
• - Figure 3 is a view similar to Figure 2 in which the call and winding means and the wire guides are each driven by an individual motor
• - Figure 4 is a view corresponding to Figure 3 in which the thread guides are driven by an individual motor, while the call and winding means and the first call and advancement means are driven in synchronism by the same engine
• - Figure 5 shows the application and use of a computer and the thread tension sensor, applied to the embodiment illustrated in Figure 3, it being noted that this application can of course relate to the embodiments illustrated in Figures 2, 3 and 4
• - Figure 6 is a schematic view of a method of producing a hybrid wire
• FIG. 10 is a very schematic view of a complete two-step process, the second step of which is carried out by direct wiring of two assembled wires, each of these assembled wires being made up of three wires twisted by double twisting;
• - Figure 11 is a very schematic view of a complete two-step process, the second step of which is carried out by direct wiring of two assembled wires, each of these two assembled wires consisting of two wires assembled by a direct wiring process;
• - Figure 12 is a schematic view of a variant of the process according to the invention in which an auxiliary thread is added to the final twisting step by double twist.
• the processing machine comprises a plurality of working positions.
• Each position includes an assembly for processing the upstream wire constituted, for example, by double twist or wiring pins (l ia, 11b, l ie, 11 d, ...), first means of calling and advancement (2a, 2b, 2c, 2d, ...) of the wire (la, lb, le, ld, ...) and of the calling and / or winding means (3a, 3b, 3c, 3d,. ..) via wire guide (6a, 6b. 6c, 6d, ).
• the device comprises members (7a, 7b, 7c, 7d) capable of producing an assembly (A) of several wires, these members being mounted in combination with several of the first means of calling and advancing.
• each of the first call and advancement means (2a, 2b, 2c, 2d, ...) is controlled by an individual motor (8a, 8b, 8c, 8d, ).
• the assembly members (7a, 7b, 7c, 7d, %) are arranged between the first means of appeal and advancement (2a, 2b, 2c, ...), and one of the means of appeal and winding (3b) able to control the speed of advancement of the joined son.
• the assembly members (7a, 7b, 7c, 7d, ...) are therefore arranged downstream of the first call and advancement means (2a, 2b, 2c, ...) and upstream of the means d 'calls and winding (3a, 3b, 3c, ).
• each individual motor (8a, 8b, 8c, 8d, ...) of the first means of calling and advancement (2a, 2b, 2c, 2d, ...) is subject to a drive (15a, 15b, 15c, ).
• the call and winding means (3a, 3b, 3c, 3d, ...) are driven by a common motor member (5).
• the wire guides (6a, 6b, 6c, 6d, ...) are driven by a common motor member
• the call and winding means (3a, 3b, 3c, 3d, ...) are each driven by an individual drive member (10a, 10b, 10c, lOd, ... .).
• the variators (15a, 15b, 15c, ...) controlling the first call means are associated with a speed adjustment means in the form, for example, of a local command accessible by an operator.
• the variators (15a, 15, b, 15c, ...) are controlled by a computer (14) delivering a setpoint to each variator, said setpoint being for example able to be programmed by an operator.
• the device finds a particularly advantageous application for the production of the resulting hybrid yarn assembly by twisting, cabling or covering of a plurality of base son (la, Ib, Ic, ).
• the transformation process comprises three main operations: - a first transformation (Pa, Pb, Pc %) of all or part of the elementary wires (Fa, Fb , Fc, ...) by a twisting, wiring, wrapping operation ... This operation is carried out on a twisting or wiring spindle; - an assembly, the wires meeting parallel to each other at point (A); - A second transformation (S) of the assembled wires, which is a twisting, wiring or wrapping operation ... This operation is carried out on a twisting or wiring spindle.
• the means (l ia, 11b, l ie, ...) make it possible to carry out the first transformation (Pa, Pb, Pc) of the basic wires (la, lb, le, .. .) and are preferably arranged adjacent to each other and include individual motorization means, each controlled individually by systems such as variable speed drives (16a, 16b, 16c, ).
• Each means (l ia, 11b, l ie.) Is therefore adjusted to carry out a transformation (Pa, Pb, Pc.) Specific to each wire, which may be different from the others, for example a twist of different value or direction. Possibly, some of the threads (la, lb, le, ...) may not be transformed or their transformations may be adjusted to 0 turns, the thread not receiving twist, only the means of unwinding and / or pretensioning the corresponding processing means, being used.
• each wire has a tension which depends on its title and on the transformation (ex: speed, diameter of the balloon, title of the wire ...) .
• Each thread (la, lb, le, ...) passes through a first means of call (2a, 2b, 2c, ...) making it possible to adjust its tension and in particular to lower the tension of the thread resulting from the transformation of the wire (Pa, Pb, Pc ..), in the form, for example, of a capstan or a grid deliverer, generally known by the name of "pre-deliverer” or "pre-call".
• this body will be referred to as "first ground of appeal.”
• this member allows the wire to slide and turns in overspeed relative to the advancement of the wire.
• each of the first means of appeal and advancement (2a, 2b, 2c, ...) is provided with a means capable of adjusting its effectiveness.
• This means can, for example, consist in adjusting the winding arc of a delivery grid, or the number of winding turns. around a capstan. This adjustment can be done manually or by actuators.
• This means of individually adjusting the efficiency of the first means of appeal (2a, 2b, 2c, ...) can also consist in adjusting the speed of the delivery device, for example by being controlled by an individual motor (8a , 8b, 8c ...), individually controlled by systems such as variable speed drives (15a, 15b, 15c ..).
• Each call and advancement means (2a, 2b, 2c.) Is therefore adjusted to adjust the tension specific to each wire to the tension of assembly which can be different from the others.
• the wires (2a, 2b, 2c.) Are routed to the assembly point (A) by guide members (7a, 7b, 7c, ...)).
• the members (7a, 7b, 7c. ...) and the point (A) are arranged between the first call and advancement means (2a, 2b, 2c.), And the winding means (3) capable of control the speed of progress of son together. Then the son (la, lb, le) joined in parallel, are called by one of the winding means which forms an intermediate coil (4).
• the assembled wire is twisted in the spindle (17), passes through a call member (18) then it is wound by the winding means (19), forming the final spool (20).
• Each individual motor of the first transformation means (l ia, 11b, l ie.) Is subject to a variator (16a, 16b. 16e.
• These variators (15a, 15b, 15c. 16a, 16b, 16c.) are associated with a speed adjustment means in the form, for example, of a setpoint or a local command accessible by an operator.
• the variators (15a, 15b, 15c. 16a, 16b, 16c.) are controlled by a computer (14) delivering a setpoint to each variator, said setpoint being for example able to be programmed by an operator.
• An improvement of the invention illustrated in FIG. 7, consists in having means for measuring the tension of each thread, in the form for example of sensors (13a, 13b, 13c, ...) downstream of the first means d 'call and advancement (2a, 2b, 2c, ...) and upstream of the assembly point (A) of the wires.
• the voltage signal of each wire is transmitted to a computer (14) which transmits instructions to the variators (15a, 15b, 15c.) Controlling the motors (8a, 8b, 8c, ...) of the first means of call and progress (2a, 2b, 2c ..).
• the computer (14) in the form for example of a central unit, permanently readjusts the speed of the first calls (2a, 2b, 2e.) To ensure perfect respect of the tension of the wires required by the process at the assembly point (A) in order to compensate for any deviations from the settings over time.
• the tensions required by the assembly process can be equal tensions between each wire or else different tensions from one wire to another.
• a means for measuring the tension of each wire can be replaced and / or supplemented by a means capable of measuring the speed of advance of the wire immediately before the assembly point (A).
• the method according to the invention illustrated by FIGS. 8 or 9, is particularly intended for the production of a hybrid wire intended for the reinforcement of tires or of composite materials.
• This process consists in implementing at least two basic wires (la, lb, le, ...), one of which in the month is of a different nature from the others.
• At least one of the basic yarns has a low elongation capacity under load, and at least one other elementary yarn of which has elasticity and or a higher elongation capacity.
• the basic wires are twisted separately to different twists, then assembled under equal or different tensions, and twisted together.
• the production process according to the invention comprises the following steps: - all or part of the elementary yarns are twisted simultaneously and in parallel by a double twist process or direct wiring (Pa, Pb, Pc. ), in the pins (l ia, 11b, l ie.) preferably adjacent to a twisting machine; - passing each wire into a first member delivery device (2a, 2b 2c..) Whose efficiency is adjustable independently of the others, to adjust its tension to the assembly tension; - The wires are guided by the guiding devices (7a, 7b, 7c, ...) to the assembly point (A) where they are brought together in an essentially parallel arrangement: - the wires thus assembled are spooled to form an intermediate spool (4) the threads being driven without sliding: - the intermediate spool of assembled threads (4) thus formed is placed in a double twist spindle (17) and the assembled threads are twisted according to the double twist process conventional (S), the assembled wires being linked together by twisting on themselves.
• auxiliary wire (21) can be introduced into the assembly.
• the auxiliary wire (21) may be a wire having an auxiliary function such as for example an anti-static or gas absorbing wire. It can, itself, be a wire formed by assembling several wires, and / or have undergone prior treatments.
• the method according to the invention is particularly intended for the production of a complex hybrid wire intended for the reinforcement of tires or of composite materials.
• This second embodiment of the method according to the invention is characterized in that it implements at least two basic wires (Fa, Fb, Fc, ...), one of which at least one of the elementary wires has a low elongation capacity preferably combined with high tenacity, and of which at least one other elementary yarn has elasticity and or a higher elongation capacity, the basic yarns being twisted separately to different twists, then assembled under equal or different tensions, and tied together by winding with another thread.
• the method includes the same steps as that defined above with the only difference that the intermediate coil (4) is placed in a hollow pin (10) for wiring or wrapping (17), the assembled wires are linked by associating them with another wire (4 '), according to a wiring or wrapping process.
• the other wire (4 ′) which is associated with the first wire (4) during the final step is different from the first assembled wire (4), either by its composition in threads (l 'a, l'b, l'c), or by the treatment undergone (P'a, P'b, P'c, ...), the two threads (4) and (4 ') being assembled according to the known process known as "direct wiring".
• said assembled wire (4) constitutes the core, and the wire (4 ′ ) which is associated during the last step is a bonding wire surrounding the core wire according to a covering process.
• the associated wire (4 ') can be a wire having an auxiliary function such as for example an antistatic or gas absorbing wire. It may itself be a wire formed by assembling several wires, and / or having undergone prior treatments.
• each spindle (l ia, 11b, l ie.) Twisting the basic wires (la, lb, le, ... ) is adjusted so that the wire (s) of lower elongation capacity receive a number of twists per meter greater than the wire (s) of high elasticity.
• the pins (l ia, 1 lb, l ie.), Effecting the twisting of the wire (s) of lower capacity d 'elongation rotates: - either in the same direction as that of the pins effecting the twist of the (or) son of great elasticity; - either in the opposite direction to that of the pins performing the twist of the high elasticity yarn (s), for example, the yarn (s) with the lowest elongation capacity are twisted in "Z" and the (s ) wire (s) of greater elasticity are twisted into "S".
• the final twisting of the assembled threads takes place in the opposite direction to the twisting of the thread (s) having the lowest elongation capacity.
• the number of twists per meter given during the final twist is less than or equal to the number of twists per meter given during the first transformation to the wire (s) with the lowest elongation capacity.
• a first example of the process according to the invention is given below, applied to the production of a yarn intended for the production of carpets, consisting of two elementary polypropylene yarns BCF 1240 dtex, twisted at 180 turns per meter in Z, and a polypropylene CF 600 dtex thread twisted to 130 turns / meter in S. The three threads are assembled and twisted together to 160 turns / meter in Z.
• the winding system (3) winds the assembled wires on a spool (4) at a winding speed of 61.1 m / min, without slipping.
• the coil (4) is taken up on a double twist spindle (17) rotating at 3500 rpm, with a call speed of 43.7 m min, without sliding.
• a second example of the process according to the invention is given below, applied to the production of a wire intended for the reinforcement of tires, consisting of two elementary aramid yarns 1100 dtex, twisted at 510 turns per meter in Z, and a wire nylon 940 dtex twisted to 350 turns / meter in Z. The three wires are assembled and twisted together to 350 turns / meter in S.
• the winding system (3) winds the assembled wires on a reel (4) at a winding speed of 27.45 m / min, without slipping.
• the coil (4) is taken up on a double twist spindle (17) rotating at 5250 rpm, with a call speed of 30 m / min, without sliding.
• the previous examples are given to illustrate the implementation of the method according to the invention and its in no way limitative.
• the advantages res emerge well from the description, in particular it is emphasized and recalled:
• the location of the means for guiding the wire towards the assembly point is in an area remote from the spindle and therefore more accessible to the operator.
• the guide members (rollers, guides) are subjected to low tensions since they are located after the first call.
• the pre-issuing members only have to withstand the tension of a thread.
• the wires follow a long path and have several angles under low tension, which prevents degradation of their quality (tensile strength, risk of broken strands, ).
• each wire being able to be of a different nature or of a different title and to receive a first treatment (in the direction of twist or number of twist parameter) different from the other wires.
• the wires can be brought to the assembly point under predetermined voltages or speeds different from the others.
• the transfer from the first stage to the second is done by a single intermediate coil which contains the pre-assembled and pre-conditioned wires to obtain the desired length or tension balance. It is possible to carry out the second transformation by the double twist or direct wiring process, which provides optimal productivity. - We can consider a very wide variety of assembly configurations and bringing together an unlimited number of wires.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Ropes Or Cables (AREA)

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Citations (4)

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• 2004
  • 2004-04-23 FR FR0450776A patent/FR2869329B1/fr not_active Expired - Fee Related
• 2005
  • 2005-03-18 CN CNA2005800176898A patent/CN1960926A/zh active Pending
  • 2005-03-18 WO PCT/FR2005/050173 patent/WO2005105639A1/fr not_active Ceased
  • 2005-03-18 EP EP05739725A patent/EP1737775B1/fr not_active Expired - Lifetime
  • 2005-03-18 DE DE602005008576T patent/DE602005008576D1/de not_active Expired - Lifetime
  • 2005-03-18 AT AT05739725T patent/ATE402900T1/de not_active IP Right Cessation
  • 2005-03-18 ES ES05739725T patent/ES2310824T3/es not_active Expired - Lifetime
  • 2005-03-18 JP JP2007508945A patent/JP4927711B2/ja not_active Expired - Fee Related
  • 2005-03-18 US US11/568,043 patent/US7802418B2/en not_active Expired - Fee Related
  • 2005-03-18 KR KR1020067024529A patent/KR20070048653A/ko not_active Withdrawn

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