EP0291004A1 - Procédés et dispositifs permettant de tordre ou d'assembler des fils, notamment des fils textiles - Google Patents

Procédés et dispositifs permettant de tordre ou d'assembler des fils, notamment des fils textiles Download PDF

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Publication number
EP0291004A1
EP0291004A1 EP88107460A EP88107460A EP0291004A1 EP 0291004 A1 EP0291004 A1 EP 0291004A1 EP 88107460 A EP88107460 A EP 88107460A EP 88107460 A EP88107460 A EP 88107460A EP 0291004 A1 EP0291004 A1 EP 0291004A1
Authority
EP
European Patent Office
Prior art keywords
wires
torsion
wire
twist
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88107460A
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German (de)
English (en)
French (fr)
Inventor
Gérard Brault
Jean-Paul Citerne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Generale des Etablissements Michelin SCA
Original Assignee
Compagnie Generale des Etablissements Michelin SCA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8706814A external-priority patent/FR2615209B1/fr
Application filed by Compagnie Generale des Etablissements Michelin SCA filed Critical Compagnie Generale des Etablissements Michelin SCA
Publication of EP0291004A1 publication Critical patent/EP0291004A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • 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
    • D02G3/286—Doubled, plied, or cabled threads with alternatively "S" and "Z" direction of twist, e.g. Self-twist process

Definitions

  • the invention relates to methods and devices for twisting or joining yarns, in particular textile yarns.
  • a thread should be taken in a very general sense.
  • a thread may be a "single thread” constituted for example by one or more filaments.
  • the single thread is made up of a single filament it is called “monofilament” and when the simple thread is made up of several filaments it is called “multifilament”.
  • Multifilaments can be untwisted, or twisted, an untwisted multifilament is often called "spun" in the textile industry.
  • a wire can itself be an assembly of simple wires.
  • Such an assembly is called “twisted” when it is constituted by several simple yarns joined together by a single twisting operation, and such an assembly is called “wired” when it is constituted by several yarns, at least one of which is a twisted , joined by one or more twisting operations.
  • the invention relates in particular to the methods and devices which make it possible to assemble at least two wires by first giving a twist to each of the wires, separately, then by twisting these wires together to obtain an assembly.
  • twisting operation in which the following two operations are most often carried out: - twisting of yarns to obtain twisted multifilaments; the twisting of these yarns is carried out in a direction which is the same for all the filaments intended for assembly; - assembly by twisting of several of these twisted multifilaments, the twisting then being carried out in the opposite direction to that of the isolated multifilaments.
  • Each of these two twisting operations combines two simultaneous movements of the filaments relative to the points where the twisting takes place: - a rotation; - a translation.
  • the invention relates to a method and a device which make it possible to avoid the above drawbacks.
  • the assemblies obtained are plied and the method and / or the device according to the invention use non-twisted (spun) multifilaments which are individually twisted with the same twisting means as for producing the assemblies.
  • the method and the device according to the invention make it possible, if desired, to directly obtain plies of threads or assemblies, in particular plies of plies.
  • the invention also relates to yarns or assemblies and plies of son or assemblies, in particular plies and plies of plies, obtained with the process and the device according to the invention.
  • the invention also relates to a sheet comprising several twisted single wires or several assemblies of wires, each assembly comprising at least two wires twisted together, the tablecloth being characterized in that it comprises at least two elementary plies in the longitudinal direction, the wires being continuous from one elementary ply to another, the number of twists of each single wire or of the wires between them in each assembly being the same for the two elementary plies, and the direction of this twist varying from one of these two elementary layers to the other.
  • Figures 1 to 4 schematically represent a device 2 according to the invention, Figure 1 being a longitudinal vertical section and Figures 2, 3, 4 being top views during three successive phases of the process according to the invention implemented in this device 2.
  • This device 2 makes it possible to obtain several parallel twists 100 at the same time, that is to say that it makes it possible to obtain a 100 N ply of parallel 100 twists, from multifilaments 1 not twisted (spun).
  • the device 2 comprises a wire feeder 3 provided with several coils, only one of these coils 4 being shown in FIG. 1 for the purpose of simplification.
  • Each of these coils 4 comprises a winding of a yarn 1.
  • the device 2 makes it possible to obtain five twists 100 from ten yarns 1 which leave the creel 3 and progress in the device 2 in the direction of the arrow V.
  • the device 2 further comprises the following elements in the direction of arrow V: a regulating means 5, a means 6 making it possible to block the yarns 1 upstream, an upstream compensator 7, a first torsion means 8-1, a second torsion means 8-2, a third torsion means 8-3, a downstream compensator 11, and a means 12 making it possible to block the plies 100 obtained downstream.
  • the device 2 further comprises the means 13, 14, called “sorting means", making it possible to separate or join together wires.
  • the means 13 is arranged just before the second torsion means 8-2, the means 14 is arranged just after this second means 8-2, these means 13, 14 being constituted for example by combs mobile.
  • the locking means 6, 12 are each represented by two opposite triangles
  • the torsion means 8-1, 8-2, 8-3 are each represented by two opposite arrows
  • the sorting means 13, 14 are each represented by a straight line segment.
  • the locking means 6, 12 are each represented by two straight line segments
  • the torsion means 8-1, 8-2, 8-3 are each represented by a straight line segment in a strong line
  • the sorting means 13, 14 are each represented by a series of dots.
  • A represents the region between the creel 3 and the upstream locking means 6
  • B represents the region between this means 6 and the first torsion means 8-1
  • C represents the region between torsion means 8-1
  • 8-2 represents the region between torsion means 8-2
  • E represents the region between the third torsion means 8-3 and the downstream blocking means 12
  • F represents the region located downstream of this means 12, in the direction of arrow V.
  • the operation of the device 2 is as follows:
  • FIG. 2 represents the position of the device 2 at the start of a manufacturing cycle corresponding to the process.
  • the ten yarns 1 extend from creel 3 to region D inclusive.
  • the torsion means 8-1, 8-2, 8-3 are applied against the yarns 1 which are separated from each other by the sorting means 13, 14, while being parallel to each other.
  • the upstream blocking means 6 is in contact with the yarns 1, which makes it possible to isolate the region A from the region B. Twists 100 originating from a previous manufacturing cycle are placed in the regions E and F.
  • the means downstream blocking device 12 is in contact with the plies 100, which makes it possible to isolate region F from region E.
  • the locking means 6, 12 are constituted, for example, by vertically movable clamps.
  • the ten yarns 1 from regions C and D constitute the web 1 N.
  • the first torsion means 8-1 and the third torsion means 8-3 are passive and each consist for example of two adhesive tapes arranged one above, the other below the yarns 1, perpendicular to these yarns 1 , and in contact with these yarns, these two ribbons being in contact with one another. Instead of two adhesive tapes, a single adhesive tape could be used, for example, forming in particular a loop.
  • the second torsion means 8-2 is active and it is arranged between the torsion means 8-1, 8-3. This active means 8-2 is shown in Figure 5, which is a vertical cross section.
  • This means 8-2 comprises an endless belt 15 wound around two drums 16, 17 with axes O16, O17.
  • the belt 15 has an upper portion 15 a and a lower portion 15 b .
  • portions 15 a , 15 b are applied to the web 1 N of yarns 1 thanks to the two pairs of rollers 18, 19.
  • Each pair of rollers 18 or 19 comprises two rollers 180 or 190 with axes O18 or O19, the axes O les , O17, O18, O19 being horizontal, parallel to each other and parallel to the yarns 1.
  • the portions 15 a , 15 b of belt 15 pass between the rollers of each pair 18, 19 to be applied against the web 1 N.
  • the belt 15 thus divides the ply 1 N into two elementary plies 1 NC corresponding to the region C and 1 ND corresponding to the region D, each yarn 1 comprising a section in region C and a section in region D ( Figure 2).
  • the sorting means 13, 14 are for example each constituted by the teeth of a movable and removable comb 20 (FIG. 5). These teeth 13, 14 are arranged between the yarns 1 to separate them from each other, the yarns 1 being continuous from region C to region D.
  • the torsion means 8-1, 8-2, 8-3 therefore being applied against the yarns 1, the drum 16 is rotated in the direction of the arrow V1 through the motor 160 integral with the drum 16.
  • the portion 15a of belt 15 thus moves perpendicularly to the yarn 1 according to the arrow V 1a and the portion 15 b of belt 15 also moves perpendicular to the yarns 1 but according to arrow V 1b whose direction is opposite to that of arrow V 1a , the arrows V 1a and V 1b being oriented transversely, that is to say in parallel to arrow W which is itself perpendicular to arrow V ( Figures 2 and 5).
  • These two portions 15 a , 15 b then cause, in each yarn 1, the torsional engagement between them of the filaments "f" of this yarn as a result of a rotation of these filaments "f".
  • the wires 1 of regions B and C are subjected to the same tension.
  • This voltage for example constant, is determined by the upstream compensator 7 as follows:
  • the compensator 7 is constituted by two drums 7-1 with fixed O7 ⁇ 1 axes, and by a drum 7-2 whose axis O7 ⁇ 2 can move vertically.
  • the axes O7 ⁇ 1, O7 ⁇ 2 are horizontal, mutually parallel and perpendicular to the yarns 1.
  • the constant tension of the yarns 1 in regions B and C is determined by the weight of the mobile drum 7-2 which therefore moves vertically, during the evolution of the torsion, which causes a longitudinal displacement of the first torsion means 8-1.
  • This downstream compensator 11 is constituted and operates in a similar manner to the upstream compensator 7, this downstream compensator 11 comprising two drums 11-1 with fixed O11 ⁇ 1 axes, and a drum 11-2 whose axis O11 ⁇ 2 is vertically movable (Figure 1), the axes O11 ⁇ 1 and O11 ⁇ 2 being horizontal parallel to each other and perpendicular to the longitudinal direction, that is to say to the plies 100.
  • the constant tension, in regions D and E is determined by the weight of the mobile drum 11-2 which therefore moves vertically, during the evolution of the torsion, which causes a longitudinal displacement of the third torsion means 8-3.
  • the weights of the movable drums 7-2 and 11-2 are equal so that the tensions of the regions B, C on the one hand and D, E on the other hand are equal.
  • the voltage due to the upstream compensator 7 is shown diagrammatically by the arrow T 1-C for the region C and the voltage due to the downstream compensator 11 is shown diagrammatically by the arrow T 1-D for the region D.
  • L 1- C represents the length of the wires 1 in the region C and L 1-D represents the length of the wires 1 in the region D, L 1-C and L 1-D being for example of the same value.
  • L 1-C and L 1-D decrease as the torsion increases.
  • a ply 10 N of threads each consisting of a twisted multifilament 10 is obtained, this ply 10 N consisting of two elementary plies 10 NC for region C and 10 ND for region D, these multifilaments 10 being continuous from region C to region D and parallel to each other but the directions of twist being opposite between region C (twist S) and region D (twist Z).
  • the sorting means 13, 14 are then moved away from the multifilaments 10, and these threads 10 are placed close to each other, two by two, bringing them side by side on both sides of the torsion means 8-2, and close of this twisting means, thanks to the sorting means 13, 14 so as to obtain five sets of wires 10, each of these sets, referenced 10-2, being constituted by a couple of wires 10.
  • These couples 10-2 are oriented longitudinally, that is to say in the direction of arrow V, and separated from each other.
  • Each of these pairs 10-2 therefore comprises two sections, one in the region C, the other in the region D, these two sections being separated by the second torsion means 8-2, the wires 10 being continuous from the region C to region D ( Figure 4).
  • a twist is then taken between them of the two multifilaments 10 of each pair 10-2, as a result of a rotation of these multifilaments 10, by rotating the belt 15 around the drums 16, 17, but in the opposite direction to the operation previously described for producing the multifilaments 10.
  • the drum 17 is rotated with the motor 170 secured to the drum 17, according to the arrow V2 whose direction is opposite to that of the arrow V1.
  • all couples 10-2 then undergo a twist in direction Z and, in region D, all couples 10-2 undergo a twist in direction S.
  • couples 10-2 are represented each by a longitudinal straight line and the twists are represented by straight line segments arranged on these pairs 10-2, these segments being parallel to each other in the same region C or D and in opposite direction to the line segments of the other section D or C.
  • the passive torsion means 8-1, 8-3 are not subjected to any displacement in the transverse direction, that is to say in the direction of the arrow W perpendicular to the arrow V, unlike the second torsion means 8 -2 active.
  • the passive means 8-1, 8-3 isolate the assemblies 10-2 with respect to regions B and E and they therefore allow the torsion to evolve only in regions C and D.
  • the portions of couples 10-2 in contact with the active means 8-2 undergo no longitudinal displacement along the arrow V with respect to this means. In other words, the assemblies 10-2 do not undergo displacement from region C towards region D, or vice versa, during this twist.
  • the regions B and C are subjected to the voltage, shown diagrammatically by the arrow T 2-C , adjusted by the upstream compensator 7, as previously described.
  • the regions D and E are subjected to the tension, shown diagrammatically by the arrow T 2-D , regulated by the downstream compensator 11 as previously described, these voltages being for example equal.
  • the length L 10-C of the couples 10-2 in the region C and the length L 10-D of the couples 10-2 in the region D vary when the torsional grip evolves.
  • each pair 10-2 gives a twist 100 and one therefore obtains a 100 N ply of plies 100 parallel to each other, this 100 N ply consisting of two elementary plies, the 100 NC ply in region C and the ply 100 ND in region D, the twist of the plies 100 being in direction Z in region C and in direction S in region D.
  • the belt 15 is then moved away from the ply 100 N and is immediately replaced by a means allowing the separation of the plies 100 NC and 100 ND to avoid untwisting of the plies 100, this means being constituted for example by two adhesive tapes of analogously to means 8-1 and 8-3 which remain in contact with the sheet 100 N. As previously described, this means could consist, for example, of a single adhesive tape, in particular forming a loop.
  • the compensators 7, 11 can be designed to accumulate a length of yarns 1 or plies 100 corresponding to regions C and D, but they can also be designed to accumulate lengths of yarns less than or greater than those which correspond to these regions C, D.
  • the blocking means 6, 12 are not in contact with the wires 1, 100 when there is passage of the wires 1 from region A to region B and of the wires 100 from region E to the region F. When there is no such movement, they are in contact with the wires 1, 100 to block them.
  • the ply ply 100 passing through the region F is wound on the reel 21 (FIG. 1).
  • the progression of the yarns 1 and of the plies 100 in the direction of the arrow V is obtained for example using a motor 210 actuating the coil 21 (FIG. 1).
  • the invention has the following advantages: -
  • the device according to the invention implements simple operations and it does not require expensive investments or large areas; -
  • the energy efficiency is very high for twists because they are obtained without rotation of the son storage elements, for example supply or reception coils; - given that there is no rotation of the storage elements, these can be fed or emptied continuously, so that the length of the wires or assemblies obtained in accordance with the invention can also be as big as you want;
  • the process does not require any manual operation so that it is easily automated; the process is very flexible since it makes it possible to easily manufacture on request sheets of given dimensions comprising the desired number of threads or assemblies, so that they are immediately usable, if desired, without cutting, and this at fast rates, even for small quantities of tablecloths; - the twist of the wires and / or the assemblies can be varied on request; -
  • the method makes it possible to start directly from the yarns, that is to say that it can be integrated directly into a spinning installation
  • the yarns, the assemblies and the plies obtained in accordance with the invention can serve, for example, to reinforce articles made of plastics and / or rubbers, for example tire casings, the invention also covering the articles thus reinforced.
  • the means for separating the elementary plies 100 NC , 100 ND have been described as being adhesive tapes. Other means can be used, for example seams, needles.
  • the movements of the belt 15 may not be perpendicular to the longitudinal direction while being such that the belt 15 comes into contact with all the yarns 1 and / or all the sets 10-2.
  • the active torsion means 8-2 can be different from a belt, this means using for example one or more movable rods, rollers. We can also consider passive torsion means such that each is brought into contact with a single wire or a single set of son.
  • the device 2 previously described has only two torsion regions, regions C and D but it could comprise more than two torsion regions, that is to say that the wires 1 and 10, the assemblies 10-2 and the assemblies 100 may each have more than two sections, the device then comprising more than three torsion means.
  • each assembly 10-2 and each assembly 100 two successive sections in the direction of the arrow V are separated by the same twisting means. It may be advantageous to have zero twist for one or more of these sections, but each wire 10, and each assembly 100 comprises at least two sections where the twist is not zero and where the twists are different.
  • each wire 10 or each assembly 100 has a number of sections "j", that is to say when the number of torsion means is equal to j + 1, and when a direction of torsion, for example torsion S, as positive, the opposite direction, for example torsion Z, then being negative, we have the following relation: in which n k is the "number of twists" corresponding to any section referenced "k", n k being by definition an algebraic number whose sign is defined by the direction of the twist in this section "k”, and whose absolute value is equal to the number of twists made in this section "k".
  • the most distant torsion means in the direction of arrow V that is to say following the wires 1 or the assemblies 10-2 are passive means devoid of displacement in the direction of the transverse arrow W, such as for example the torsion means 8-1 and 8-3, so as not to introduce torsion, before and after all of the sections n k , that is to say say in regions B and E of the example corresponding to the device 2 previously described, "j" being equal to two in this example.
  • the torsion means except the extreme means are active.
  • the number of sections of the wire, during its individual twisting, and the number of sections of the assembly may be equal or different, that is to say that "j" may or may not be the same in both cases;
  • the sections of the wire, during its individual twisting, and the sections of the assembly may or may not correspond;
  • - the absolute values of n k , or the signs of the directions of torsion in the sections of the individually twisted wire and in the sections of the assembly may or may not be the same;
  • the torsion means for the individual wire and for the whole may or may not be the same.
  • a yarn is subjected to a prior individual twist and then a set is twisted where this yarn is located, so that one has the following conditions: - The number of sections is the same for the two twists and these sections correspond from one twist to another; - the torsion means are the same in both cases; - The twist given individually to the yarn in each section is in the opposite direction to the twist then given to the set in the corresponding section.
  • the device 2 could be used to make any number of wires 10 or assemblies 100. It should also be noted that each set 10-2 and each assembly 100 may possibly include more than two wires 10.
  • the device 2 has been described as allowing the production of plies 100 from yarns 1, but the invention also applies to the case where the assemblies are made from yarns which have previously been twisted with conventional means, for example by using in the device 2 twisted multifilaments 10 coming from a known type of twisting installation, these twisted multifilaments 10 then being wound on the coils 4 of the creel 3.
  • the invention is therefore not limited to the production twisted but allows to obtain very varied assemblies, for example cords using yarns each comprising several multifilaments.
  • the multifilaments 10 obtained in accordance with the invention can be used subsequently in a conventional manner, for example for making twists according to known twisting methods.
  • the invention preferably relates to the production of plies from yarns, as previously described, since assemblies, or plies of assemblies, are thus obtained in a simple manner directly from yarns.
  • FIG. 6 this figure comprising three parts 6 (I), 6 (II), 6 (III).
  • the regions C and D of the device 2 are represented, schematically by a single assembly 10-2 separated into two sections C and D, assumed to be of equal length for simplicity, this length being referenced “l" in the drawing. , the total length L of all the regions C, D therefore being equal to 2 l.
  • the final ply 100 alternately has twisted segments in S and in Z, each of these segments having a length equal to L, that is to say that this change in direction of twist allows to double the length of the twisted where the direction of torsion is the same by removing, after completion of the assembly, the torsion means separating two sections where the torsion has the same direction, as shown in Figure 6- (III) where we see a segment of length L and of direction S corresponding to a section C I of the region C of the first cycle and a section D II of the region D of the second cycle.
  • a 100 N ply of plies 100 is produced in accordance with the invention with a device similar to device 2 directly from yarns 1, by twisting the yarns 1 first and then twisting the sets 10- 2 with the same torsion means 8-1, 8-2, 8-3, the tensions T 1-C , T 1-D , T 2-C , T 2-D being constant during the production of this ply.
  • the characteristics of the starting yarns and the assemblies obtained are as follows: - yarns 1: polyamide yarns, each yarn having a titer of 188 tex and comprising 280 filaments; - number of yarns per ply 1 N : 48; - lengths of each region C and D: 6 m; - the tensions T 1-C and T 1-D are equal to 4 newtons for each multifilament 10; - twist of multifilaments 10: 240 rpm, the twist in region C being in direction S and the twist in region D being in direction Z; this twist is that given individually to the yarns 1; - number of plies 100 in the ply 100 N : 24; - twist of the plies 100: 240 turns / m, the twist in the region C being of direction Z and the twist in the region D being of direction S; this twist is that given to sets 10-2; - the voltages T 2-C and T 2-D are equal to 8 newtons for each twist 100; - The plies 100 thus obtained each have
  • the invention covers cases where active twisting means are used which are capable of acting individually on each wire or each set of wires.
  • FIG. 7 represents such an active means 8-20 constituted by a disc comprising a notch 8-21 extended by a recess 8-22 opening out by diverging on the periphery of disc 8-20.
  • Several means 8-20 can be used in the device 2 previously described, as follows. Each yarn 1 is placed in the notch 8-21 with a disc 8-20, the recess 8-22 facilitating the introduction of the yarn 1 in the notch 8-21. The device 2 then uses ten active means 8-20 each acting individually on a yarn 1, all of these active means replacing the belt 15. The other characteristics of the device 2 remain unchanged.
  • Each disc 8-20 is capable of being rotated about its axis, which coincides with the axis of the yarn 1 near the disc 8-20, this axis, which is not shown in the drawing for a purpose for simplification, therefore having a longitudinal direction.
  • These drive means are known means, for example a belt.
  • each disc 8-20 acts in isolation on a single thread 1.
  • the sorting means 13, 14 are moved away from the multifilaments 10 and each of these multifilaments 10 leaves the notch 8-21 where it is located. These wires 10 are then brought together two by two by introducing them two by two into the notch 8-21 of a disc 8-20, and the sorting means 13, 14 are again brought together which then separate the wires 10 into five 10-2 sets of wires 10, each of these sets 10-2, consisting of a pair of wires 10, being inserted into a notch 8-21, five discs 8-20 only being then used.
  • a twist is then taken between them of the two multifilaments of each pair 10-2 as a result of a rotation of these multifilaments 10, by rotating the discs 8-20 but in the opposite direction to the operation previously described to carry out the multifilaments 10, each disc 8-20 then acting in isolation on a single assembly 10-2.
  • each pair 10-2 gives a twist 100 and we then operate as previously described to pass the ply 100 N into regions E and F after removing each twist 100 from the notch 8-21 where it is located, and after having then replaced the torsion means 8-20 by a means making it possible to avoid untwisting, as previously described.
  • the individual means 8-20 make it possible to have different twists inside the same area C, D if desired, during the production of the threads 10 and / or of the plies 100.
  • FIG. 8 represents another active means of torsion capable of acting on each wire or each set of wires.
  • the individual torsion means 8-30 shown in this FIG. 8 consists of a cylinder provided with a helical notch 8-31 in which can be accommodated the yarn 1 or the assembly 10-2 of twisted multifilaments 10, this means 8 -30 can be rotated around the axis of the cylinder which coincides with the axis of the yarn 1 or the assembly 10-2, near this means 8-30, this rotation being shown schematically by the arrow F8 ⁇ 30 in figure 8.
  • the functioning of the means 8-30 is similar to that of the disc 8-20 and the means 8-30 can replace the disc 8-20 in the device 2.
  • the notches 8-21 and 8-31 are calibrated as a function of the cross section of the yarns 1 or of the set of yarns 10 which they must receive, so that the part of these yarns or these sets which is in contact with the notch 8-21, 8-31 is well tightened in this notch and cannot move relative to this notch.
  • twisting means some acting collectively on several wires or several sets of wires, in the same way as the belt 15, and some acting individually on a wire or a set of wires, such as means 8-20, 8-30 previously described.
  • the tension was constant in each torsion operation, but one can envisage cases where the tension is varied during each torsion, according to the characteristics that one wants to obtain.
  • the examples described above concerned textile threads, but the invention covers the cases where metallic threads are used, for example steel threads, mineral threads, for example glass threads, or wires of various materials, for example carbon or boron wires, or even wires of multiple materials, for example wires comprising both metallic materials and mineral materials.
  • metallic threads for example steel threads, mineral threads, for example glass threads, or wires of various materials, for example carbon or boron wires, or even wires of multiple materials, for example wires comprising both metallic materials and mineral materials.
  • the invention covers cases where the threads or sets of threads are partially untwisted after twisting them, which can make it possible, for example, to stabilize these threads or these sets, in the case where uses metal wires, so that it is not necessary to use systems to avoid untwisting, between two sections of different twists.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Tires In General (AREA)
EP88107460A 1987-05-14 1988-05-10 Procédés et dispositifs permettant de tordre ou d'assembler des fils, notamment des fils textiles Withdrawn EP0291004A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8706814 1987-05-14
FR8706814A FR2615209B1 (fr) 1987-05-14 1987-05-14 Procedes et dispositifs permettant de tordre ou d'assembler des fils, notamment des fils textiles
FR888804587A FR2629479B2 (fr) 1987-05-14 1988-04-05 Procedes et dispositifs pour tordre ou assembler des fils avec au moins trois moyens de torsion
FR8804587 1988-04-05

Publications (1)

Publication Number Publication Date
EP0291004A1 true EP0291004A1 (fr) 1988-11-17

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EP88107460A Withdrawn EP0291004A1 (fr) 1987-05-14 1988-05-10 Procédés et dispositifs permettant de tordre ou d'assembler des fils, notamment des fils textiles

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EP (1) EP0291004A1 (no)
JP (1) JPS6445839A (no)
KR (1) KR880014149A (no)
CN (1) CN1030265A (no)
AU (1) AU1614288A (no)
BR (1) BR8802341A (no)
DK (1) DK254188A (no)
FR (1) FR2629479B2 (no)
NO (1) NO882124L (no)
OA (1) OA08846A (no)
PT (1) PT87483A (no)
TR (1) TR23312A (no)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU288664B2 (en) * 1964-10-28 1969-01-14 Commonwealth Scientific And Industrial Research Organization Twisting apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE158466C (no) *
GB191211376A (en) * 1911-05-13 1913-02-27 Fernando Casablancas Improvements relating to Means or Mechanism for Imparting False Torsion to Textile Slivers.
GB191204579A (en) * 1912-02-23 1913-02-20 Ernest Richard Royston Improvements in or connected with Spinning Cotton and other Fibres or Fibrous Material.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU288664B2 (en) * 1964-10-28 1969-01-14 Commonwealth Scientific And Industrial Research Organization Twisting apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SPINNER, WEBER, TEXTILVEREDLUNG, vol. 88, no. 8, août 1970, page 776, Würzburg, DE; "Ein neuartiges Spinnverfahren hoher Produktivität" *

Also Published As

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OA08846A (fr) 1989-03-31
TR23312A (tr) 1989-11-01
CN1030265A (zh) 1989-01-11
AU1614288A (en) 1988-11-17
FR2629479A2 (fr) 1989-10-06
BR8802341A (pt) 1989-01-24
NO882124L (no) 1988-11-15
DK254188D0 (da) 1988-05-09
JPS6445839A (en) 1989-02-20
PT87483A (pt) 1989-05-31
KR880014149A (ko) 1988-12-23
DK254188A (da) 1988-11-15
FR2629479B2 (fr) 1991-01-18
NO882124D0 (no) 1988-05-13

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