EP0126659A1 - Method and device for manufacturing a double yarn - Google Patents
Method and device for manufacturing a double yarn Download PDFInfo
- Publication number
- EP0126659A1 EP0126659A1 EP84400738A EP84400738A EP0126659A1 EP 0126659 A1 EP0126659 A1 EP 0126659A1 EP 84400738 A EP84400738 A EP 84400738A EP 84400738 A EP84400738 A EP 84400738A EP 0126659 A1 EP0126659 A1 EP 0126659A1
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- Prior art keywords
- strands
- wire
- twisting
- fibers
- point
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- 238000000034 method Methods 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title description 10
- 239000000835 fiber Substances 0.000 claims abstract description 58
- 238000004804 winding Methods 0.000 claims abstract description 20
- 238000009987 spinning Methods 0.000 claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000004513 sizing Methods 0.000 description 6
- 241001589086 Bellapiscis medius Species 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- 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
- D02G3/36—Cored or coated yarns or threads
- D02G3/367—Cored or coated yarns or threads using a drawing frame
Definitions
- the subject of the present invention is a method and a device for spinning fiber yarns, optionally comprising at least one core.
- Yarn production can be performed on many spinning systems.
- a special case of thread is found in core threads, in which a core thread is wrapped in a sheath of staple fibers. Processes for obtaining core yarns are described in particular in the patents of the United States of America Nos. 1373880, 2024156, 2210884, 2313058, 2504523, 2526523, 3017740 and 3038295.
- core yarns can be carried out on numerous spinning systems commonly used for the manufacture of yarns from staple fibers.
- the threads with spun cores generally have the disadvantage of being limited in the speed of production to that of the machines employed and therefore to the twisting system used.
- Self-twisted core yarns are known from United States Patent No. 4033102.
- An original embodiment of self-twisted core yarns is described in French patents No. 7918173 and 7913995.
- the advantage of this process is to require only unidirectional movements at constant speed.
- its great drawback is that it imposes sudden and significant variations in torsion and therefore in tension which limit their efficiency at the level of production speed, and increase the risks of slipping of the covering fibers with respect to blade.
- French patent n ° 8111642 avoids these drawbacks and allows a high production speed without slipping of the covering fibers relative to the core and achieves after twisting a unidirectional twist of the ply. Its great drawback is that it requires the use of one or more continuous filaments acting as a carrier for the covering fibers, which can be a drawback in the final product.
- the object of the present invention is to enable fiber yarns with or without cores to be obtained with an extremely high production speed, obtained by consolidating the resistance of the fiber yarn, preferably when it has to withstand forces. .
- a process for spinning fiber yarns a process in which at least one strand of fibers is stretched between points of supply of these strands and pairs of stretching cylinders, upstream of which a continuous filament is introduced. and in accordance with the invention, the strands formed by each strand of fibers and each continuous filament are twisted by a torsion member preferably with friction, by making them converge at the same point situated upstream or downstream of the torsion.
- the thread thus formed is passed through a pair of delivery cylinders placed after the torsion member, the thread is spooled on an appropriate support and the thread thus formed is twisted possibly by the strands on a twisting loom.
- the cohesion of the wire is given between the point of twisting and between the point of unwinding of the wire:
- the wire thus formed according to the invention is twisted on a conventional twisted loom, for example with a slider ring or with double twist or with a double step to give the final twist.
- the cohesion is given to the yarn by sizing the fibers, namely by adding a cohesive product, to the fibers for example, before drawing the strands of fibers, in particular at the level of the preparation of the strands. , or more preferably after twisting the strands and before winding them.
- the wire which is wound is such that there is no assembly twist which is avoided by adjusting the tension. If this assembly torsion exists, due to irregularities in the functioning of the torsion member linked to irregularities in the mass of the wire, it is a random twist, or alternating twist or non-regular self-twist. It is therefore neither regular in steps nor in intensity.
- the invention makes it possible to avoid such an unwanted assembly twist of the wound wire.
- the continuous filament or filaments are cut before winding.
- the continuous filament or filaments are cut upstream of the stretching cylinders. This constitutes a mode of launching the manufacture which is in no way limiting and one can provide for other ways of proceeding.
- At least two wicks of fibers are stretched separately between supply points and pairs of stretching cylinders, the continuous wires are supplied, they are introduced into said strands upstream of the different stretching cylinders and the strands formed at the same point of a torsion member are made to converge.
- the strands formed are passed through a pair of delivery cylinders and the continuous filaments are cut, upstream of the stretching cylinders, before the remaining assembly is wound.
- the assembly formed by the fibers is then put on a twisting loom where a resistance of the wire is ensured between the point of unwinding of the wire on the spool and the point of taking torsion.
- the cohesion means are placed between the point of unwinding the wire on the spool and the torsion point during twisting.
- the wire which is wound has a very particular structure. Indeed, it is formed of at least two strands placed side by side having a low residual twist, possibly alternating, very low, sufficient to ensure cohesion of the covering fibers on the filament and insufficient to cause the assembly of the two strands by regular and constant self-twisting.
- the yarn after twisting is such that the fibers are all substantially parallel to each other in the axis of each strand with a variation equal to the very small residual twist existing in the yarn before twisting, but as we know dissociate the two strands by untwisting.
- a spinning process is carried out by stretching a wick of fibers 5a between a supply point 2a and a pair of stretching cylinders 4a.
- the stretching system further comprises a pair of stretch sleeves 3a. in parallel, a strand of fibers 5b is stretched separately by a drawing system comprising a supply point, namely a pair of food rolls 2b, a pair of drawing sleeves 3b and a pair of drawing rolls 4b.
- a continuous filament (6a, 6b) is introduced upstream of the stretching cylinders (4a, 4b) upstream of the stretching cylinders (4a, 4b) .
- Two strands are therefore formed, each consisting of a wick of fibers and a filament.
- the strands thus formed are twisted together by a wringer 7 and are guided by two guides 8 and 9.
- the two strands then pass through a pair of cylinders 10 before being aspirated by a vacuum cleaner 13 before removing the continuous filaments for example by cutting, using a pair of manual scissors, upstream of the stretching cylinders.
- the continuous filaments thus cut are therefore brought by the vacuum cleaner 13 to the waste.
- FIG. 2 shows the spinning device after cutting the filaments, when the fiber yarn is wound on a cylinder 11.
- a paraffinic sizing agent or a sizing agent containing colloidal silica may be advantageous to add to the fibers, during the preparation of the wicks, by sizing increasing this cohesion between the fibers.
- a paraffinic sizing agent or a sizing agent containing colloidal silica may be advantageous to add to the fibers, during the preparation of the wicks, by sizing increasing this cohesion between the fibers.
- a paraffinic sizing agent or a sizing agent containing colloidal silica This also has the effect of facilitating twisting.
- friction torsion members which provide both a torsion component and a thread advancement component
- False twist devices are known. They can be rotary or operate by friction. They can be static and a simple winding on a rod can ensure a torsion by rolling upstream of the rod when one pulls on the wire, provided that the angle of the wire with respect to the rod, the diameter of the rod according to that of the wire as well as the pitch of the wire on the rod and the coefficient of friction of the material of the rod, are judiciously chosen.
- the example in Figure 3 is a device that achieves these requirements. It consists of a body 14 of light material which supports a rod 15 in the form of a semicircle on the upper part of the body 14.
- FIG. 4 represents a section of a double twist twisting spindle in which the coil of wire 16 is placed on the pot 17 where it is centered thanks to the centering device 18.
- the wire 19 is unwound in the parade, leaving the reel passes through the eyelet 20 of the wire feeder 21.
- the wire is then wound on the rod 15 which is supported by the body 14, itself fixed by any means not shown, on the coronelle 21.
- the wire After having made a certain number of turns the wire enters the body of the extension 22 where it will receive the first twist turn given by the disc torsion (not shown) to then pass between the pot 17 and the anti-balloon 23 where it receives the second turn of twist before being wound on a reel not shown.
- FIG. 5 A variant of the device is shown in Figure 5 where the wire is wound on a straight rod.
- FIG. 6 Another variant of the device is shown in Figure 6 where the rod is spiraled into a cone.
- a yarn of fibers comprising at least two strands, which does not have any discontinuities, such as knots, splices or stops and which allows the production of spools of wire of significant weight, for example weighing at least 1 kg for fine threads, for example around 10 tex and spools of thread of at least 10 kg for coarse threads, for example for threads of around 1000 tex.
- FIG. 8A Such a wire is shown in Figure 8A.
- the fibers 28 are substantially much more parallel to each other than the fibers 29 of a thread of the prior art, all other things being equal.
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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)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
La présente invention a pour objet un procédé et un dispositif pour le filage des filés de fibres, comportant éventuellement au moins une âme.The subject of the present invention is a method and a device for spinning fiber yarns, optionally comprising at least one core.
La production des fils peut être effectuée sur de nombreux systèmes de filage. On connaît, en particulier, les systèmes anneau-curseur, les systèmes d'auto-torsion, ceux à bout libre, de guipage etc...Yarn production can be performed on many spinning systems. We know, in particular, ring-cursor systems, self-twisting systems, those with free ends, wrapping etc ...
Un cas particulier de fil se trouve dans les fils à âmes, dans lesquels un fil d'âme est enveloppé d'une gaine de fibres discontinues. Des procédés d'obtention de fils à âme sont décrits notamment dans les brevets des Etats-Unis d'Amérique n° 1373880, 2024156, 2210884, 2313058, 2504523, 2526523, 3017740 et 3038295.A special case of thread is found in core threads, in which a core thread is wrapped in a sheath of staple fibers. Processes for obtaining core yarns are described in particular in the patents of the United States of America Nos. 1373880, 2024156, 2210884, 2313058, 2504523, 2526523, 3017740 and 3038295.
La production de fils à âmes peut être effectuée sur de nombreux systèmes de filage communément utilisés pour la fabrication de fils à partir de fibres discontinues. Toutefois, et en particulier avec le système anneau-curseur, les fils à âmes filés présentent généralement l'inconvénient d'être limités dans la vitesse de production à celle des machines employéeset donc au système de tordage utilisé.The production of core yarns can be carried out on numerous spinning systems commonly used for the manufacture of yarns from staple fibers. However, and in particular with the ring-cursor system, the threads with spun cores generally have the disadvantage of being limited in the speed of production to that of the machines employed and therefore to the twisting system used.
Les fils à âme auto-tordus sont connus par le brevet des Etats-Unis d'Amérique n° 4033102. Un mode de réalisation originale de fils à âmes auto-tordus est décrit dans les brevets français n° 7918173 et 7913995. L'avantage de ce procédé est de ne nécessiter que des mouvements unidirectionnels à vitesse constante. Par contre, son grand inconvénient est d'imposer au fil de brusques et importantes variations de torsion et donc de tension qui en limitent l'efficacité au niveau de la vitesse de production, et accroissent les risques de glissement des fibres de couverture par rapport à l'âme.Self-twisted core yarns are known from United States Patent No. 4033102. An original embodiment of self-twisted core yarns is described in French patents No. 7918173 and 7913995. The advantage of this process is to require only unidirectional movements at constant speed. On the other hand, its great drawback is that it imposes sudden and significant variations in torsion and therefore in tension which limit their efficiency at the level of production speed, and increase the risks of slipping of the covering fibers with respect to blade.
Le brevet français n° 8111642 évite ces inconvénients et permet une vitesse de production élevée sans glissement des fibres de couverture par rapport à l'âme et réalise après retordage une torsion unidirectionnelle du retors. Son grand inconvénient est de nécessiter l'emploi d'un ou plusieurs filaments continusservant de vecteur aux fibres de couverture, ce qui peut être un inconvénient dans le produit final.French patent n ° 8111642 avoids these drawbacks and allows a high production speed without slipping of the covering fibers relative to the core and achieves after twisting a unidirectional twist of the ply. Its great drawback is that it requires the use of one or more continuous filaments acting as a carrier for the covering fibers, which can be a drawback in the final product.
La présente invention a pour but de permettre l'obtention de filés de fibres avec ou sans âmes avec une vitesse de production extrêmement élevée, obtenue par la consolidation de la résistance du filé de fibres, de préférence au moment où il a à supporter des efforts.The object of the present invention is to enable fiber yarns with or without cores to be obtained with an extremely high production speed, obtained by consolidating the resistance of the fiber yarn, preferably when it has to withstand forces. .
Ce but est atteint par un procédé pour le filage des filés de fibres, procédé selon lequel on étire au moins une mèche de fibres entre des points d'amenée de ces mèches et des paires de cylindres étireurs, en amont desquels on introduit un filament continu et conformément à l'invention, on tord les brins formés par chaque mèche de fibres et chaque filament continu par un organe de torsion de préférence à friction, en les faisant converger en un même point situé en amont ou en aval de l'organe de torsion. On fait passer le fil ainsi formé au travers d'une paire de cylindres délivreurs placée après l'organe de torsion,on bobine le fil sur un support approprié et on retord éventuellement le fil ainsi formé par les brins sur un métier à retordre.This object is achieved by a process for spinning fiber yarns, a process in which at least one strand of fibers is stretched between points of supply of these strands and pairs of stretching cylinders, upstream of which a continuous filament is introduced. and in accordance with the invention, the strands formed by each strand of fibers and each continuous filament are twisted by a torsion member preferably with friction, by making them converge at the same point situated upstream or downstream of the torsion. The thread thus formed is passed through a pair of delivery cylinders placed after the torsion member, the thread is spooled on an appropriate support and the thread thus formed is twisted possibly by the strands on a twisting loom.
Ce procédé est tel que l'on donne au fil en un point déterminé précis, une cohésion suffisante pour permettre le retordage. Ainsi, on n'a pas de rupture du filé de fibres. Préférentiellement on donne la cohésion au fil entre le point de prise de torsion et entre le point de dévidage du fil:This process is such that the thread is given at a precise determined point, sufficient cohesion to allow twisting. Thus, there is no break in the fiber yarn. Preferably, the cohesion of the wire is given between the point of twisting and between the point of unwinding of the wire:
Le fil ainsi formé selon l'invention, est retordu sur un métier à retorde classique, par exemple à anneau-curseur ou à double torsion ou à double étape pour donner la torsion définitive.The wire thus formed according to the invention is twisted on a conventional twisted loom, for example with a slider ring or with double twist or with a double step to give the final twist.
Selon un autre mode de réalisation on donne la cohésion au fil par ensimage des fibres,à savoir par adjonction d'un produit cohésif, aux fibres par exemple, avant d'étirer les mèches de fibres, en particulier au niveau de la préparation des mèches, ou plus préférentiellement après torsion des brins et avant leur bobinage.According to another embodiment, the cohesion is given to the yarn by sizing the fibers, namely by adding a cohesive product, to the fibers for example, before drawing the strands of fibers, in particular at the level of the preparation of the strands. , or more preferably after twisting the strands and before winding them.
Selon l'invention, le fil qui est bobiné est tel qu'il n'existe pas de torsion d'assemblage qui est évitée par réglage de la tension. Au cas où cette torsion d'assemblage existe, due aux irrégularités de fonctionnement de l'organe de torsion liées aux irrégularités de masse du fil, c'est une torsion au hasard, ou torsion alternée ou auto-torsion non régulière. Elle n'est donc régulière ni en pas, ni en intensité. L'invention permet d'éviter une telle torsion d'assemblage non désirée du fil bobiné.According to the invention, the wire which is wound is such that there is no assembly twist which is avoided by adjusting the tension. If this assembly torsion exists, due to irregularities in the functioning of the torsion member linked to irregularities in the mass of the wire, it is a random twist, or alternating twist or non-regular self-twist. It is therefore neither regular in steps nor in intensity. The invention makes it possible to avoid such an unwanted assembly twist of the wound wire.
Pour réaliser un fil sans âme, on coupe le ou les filaments continus avant d'effectuer le bobinage. Préférentiellement,on coupe le ou les filaments continus en amont des cylindres étireurs. Ceci constitue un mode de lancement de la fabrication qui n'est nullement limitatif et on peut prévoir d'autres manières de procéder.To make a coreless wire, the continuous filament or filaments are cut before winding. Preferably, the continuous filament or filaments are cut upstream of the stretching cylinders. This constitutes a mode of launching the manufacture which is in no way limiting and one can provide for other ways of proceeding.
Selon un mode de réalisation particulier de l'invention on étire séparément au moins deux mêches de fibres entre des points d'amenée et des paires de cylindres étireurs, on alimente les fils continus, on les introduit dans lesdites mêches en amont des différents cylindres étireurs et on fait converger les brins formés en un même point d'un organe de torsion. On fait passer les brins formés au travers d'une paire de cylindres délivreurs et on coupe les filaments continus, en amont des cylindres étireurs, avant le bobinage de l'ensemble restant. L'ensemble formé par les fibres est ensuite mis sur un métier à retordre où l'on assure une résistance du fil entre le point de dévidage du fil sur la bobine et le point de prise de torsion.According to a particular embodiment of the invention, at least two wicks of fibers are stretched separately between supply points and pairs of stretching cylinders, the continuous wires are supplied, they are introduced into said strands upstream of the different stretching cylinders and the strands formed at the same point of a torsion member are made to converge. The strands formed are passed through a pair of delivery cylinders and the continuous filaments are cut, upstream of the stretching cylinders, before the remaining assembly is wound. The assembly formed by the fibers is then put on a twisting loom where a resistance of the wire is ensured between the point of unwinding of the wire on the spool and the point of taking torsion.
Ce but est également atteint par un dispositif pour le filage des filés de fibres comportant éventuellement au moins un filament continu,comprenant :
- - des moyens de réalisation d'au moins deux brins de fibres,
- - des moyens d'alimentation d'au moins un filament continu dans chaque brin,
- - des moyens de fausse torsion des brins, de préférence par friction,
- - des moyens de réglage de la tension des brins, de préférence situés en aval des moyens de torsion, éventuellement des moyens d'élimination du filament continu,
- - des moyens de bobinage,
- - des moyens de retordage du filé,
- - des moyens conférant une cohésion suffisante pour permettre de retordage.
- means for producing at least two strands of fibers,
- means for feeding at least one continuous filament in each strand,
- means for false twisting of the strands, preferably by friction,
- means for adjusting the tension of the strands, preferably located downstream of the torsion means, possibly means for removing the continuous filament,
- - winding means,
- - means for twisting the yarn,
- - Means giving sufficient cohesion to allow twisting.
Préférentiellement, les moyens de cohésion sont placés entre le point de dévidage du fil sur la bobine et le de prise de torsion lors de retordage .Preferably, the cohesion means are placed between the point of unwinding the wire on the spool and the torsion point during twisting.
Selon l'invention, le fil qui est bobiné a une structure tout à fait particulière. En effet, il est formé d'au moins deux brins placés côte à côte présentant une faible torsion résiduelle, éventuellement alternée, très faible, suffisante pour assurer une cohésion des fibres de couverture sur le filament et insuffisante pour provoquer l'assemblage des deux brins par auto-torsion de façon régulière et constante.According to the invention, the wire which is wound has a very particular structure. Indeed, it is formed of at least two strands placed side by side having a low residual twist, possibly alternating, very low, sufficient to ensure cohesion of the covering fibers on the filament and insufficient to cause the assembly of the two strands by regular and constant self-twisting.
Enfin, le fil après retordage est tel que les fibres sont toutes sensiblement parallèles les unes aux autres dans l'axe de chaque brin avec une variation égale à la très faible torsion résiduelle existant dans le fil avant retordage, mais telle que l'on sache dissocier les deux brins par détorsion.Finally, the yarn after twisting is such that the fibers are all substantially parallel to each other in the axis of each strand with a variation equal to the very small residual twist existing in the yarn before twisting, but as we know dissociate the two strands by untwisting.
Il s'agit effectivement d'un fil deux brins.It is indeed a two strand wire.
L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce aux exemples de mise en oeuvre, donnés ci-après à titre illustratif , mais non limitatif et qui sont illustrés par les figures annexés dans lesquelles :
- - la figure 1 est une vue schématique, en perspective d'un dispositif de filage avant l'arrêt du filament continu dans le cas où lepoint de convergence est en amont du tordeur.
- - la figure 2 est une vue schématique en perspective d'un dispositif permettant d'obtenir un fil double avant la montée en torsion et après la coupe du filament, dans le cas où le point de convergence est en aval du tordeur.
- - La figure 3 est une vue en perspective d'un dispositif, permettant d'obtenir une résistance du filé entre le point de dévidage du fil sur la bobine et le point de prise de torsion d'un métier à retordre.
- - La figure 4 est une vue en coupe dudit dispositif de la figure 3, monté sur la coronelle de dévidage d'une retordeuse double-torsion.
- - La figure 5 est une vue en perspective d'une variante du dispositif de la figure 3.
- - La figure 6 est une vue en perspective d'une autre variante du dispositif de la figure 3.
- - La figure 7 est une vue schématique du dispositif de la figure 5, monté sur un métier à retordre à anneau cursseur.
- - La figure 8A est une vue du fil après retordage selon l'invention.
- - La figure 8B est une vue d'un fil de la technique antérieure.
- - Figure 1 is a schematic view in perspective of a spinning device before stopping the continuous filament in the case where the point of convergence is upstream of the twister.
- - Figure 2 is a schematic perspective view of a device for obtaining a double wire before the rise in torsion and after the cutting of the filament, in the case where the point of convergence is downstream of the twister.
- - Figure 3 is a perspective view of a device, for obtaining a resistance of the yarn between the wire unwinding point on the spool and the point of torsion taking of a twisting loom.
- - Figure 4 is a sectional view of said device of Figure 3, mounted on the coring reel of a double-twist twister.
- - Figure 5 is a perspective view of a variant of the device of Figure 3.
- - Figure 6 is a perspective view of another variant of the device of Figure 3.
- - Figure 7 is a schematic view of the device of Figure 5, mounted on a twisting loom with slider ring.
- - Figure 8A is a view of the thread after twisting according to the invention.
- - Figure 8B is a view of a thread of the prior art.
Selon l'invention, on effectue un procédé de filage en étirant un mèche de fibres 5a entre un point d'amenée 2a et une paire de cylindres étireurs 4a. Le système d'étirage comporte en outre une paire de manchons d'étirage 3a. parallèlement, on étire séparément une mèche de fibres 5b par un système d'étirage comportant un point d'amenée, à savoir une paire de cylindres alimentaires 2b, une paire de manchons d'étirage 3b et une paire de cylindres étireurs 4b.According to the invention, a spinning process is carried out by stretching a wick of
En amont des cylindres étireurs (4a, 4b) on introduit un filament continu (6a, 6b). On forme donc deux brins constitués chacun d'une mèche de fibres et d'un filament. Les brins ainsi formés sont tordus ensemble par un tordeur 7 et sont guidés par deux guides 8 et 9. Les deux brins passent ensuite par une paire de cylindres 10 avant d'être aspirés par un aspirateur 13 avant d'éliminer les filaments continus par exemple par coupage, au moyen d'une paire de ciseaux manuels, en amont des cylindres étireurs.Upstream of the stretching cylinders (4a, 4b) a continuous filament (6a, 6b) is introduced. Two strands are therefore formed, each consisting of a wick of fibers and a filament. The strands thus formed are twisted together by a
Les filaments continus ainsi coupés sont donc amenés par l'aspirateur 13 aux déchets.The continuous filaments thus cut are therefore brought by the vacuum cleaner 13 to the waste.
La figure 2 représente le dispositif de filage après la coupe des filaments, quand le filé de fibres est bobiné sur un cylindre 11.FIG. 2 shows the spinning device after cutting the filaments, when the fiber yarn is wound on a
Il est important, d'avoir un nombre de fibres en ' section suffisant, en relation avec la cohésion des fibres, la propreté de la mèche et la tension entre les étireurs 4 et les cylindres délivreurs 10.It is important to have a sufficient number of fibers in 'section, in relation to the cohesion of the fibers, the cleanliness of the wick and the tension between the stretchers 4 and the
A propos de la cohésion entre les fibres, il peut être intéressant d'adjoindre au fibres, au moment de la préparation des mêches, en ensimage augmentant cette cohésion entre les fibres. Par exemple, un ensimage paraffinique ou un ensimage contenant de la silice colloïdale. Cela ayant, aussi, pour effet de faciliter le retordage.Regarding the cohesion between the fibers, it may be advantageous to add to the fibers, during the preparation of the wicks, by sizing increasing this cohesion between the fibers. For example, a paraffinic sizing agent or a sizing agent containing colloidal silica. This also has the effect of facilitating twisting.
Dans le cas où le point de couvergence est en amont de l'organe de torsion.In the case where the point of cover is upstream of the torsion member.
Il est aussi important de régler la tension entre les étireurs 4 et les cylindres.délivreurs 10, de façon à avoir un distance h convenable entre les étireurs 4 et le point de convergence 12 des fils,en relation avec la torsion donnée et la vitesse de défilement. En effet, une torsion existe dans chacun des brins simples, entre le point de convergence 12 des brins et le point où le brin est saisi en dernier lieu par les étireurs 4, mais cette torsion n'est pas incorporée dans le fil résultant. Cette torsion existe dans les brins préalablement à la convergence en une quantité d'équilibre qui dépend de la géométrie du système et des paramètres de filage. Cet état de fait décrit ci-dessus peut être en pratique modifié. En effet, les irrégularités survenant au hasard dans les brins, une partie de la torsion est incorporée dans des brins de manière variant au hasard. Une telle torsion est toutefois de faible intensité.It is also important to adjust the tension between the stretchers 4 and the
Si la tension est trop faible, trop peu de torsion se trouve dans le brin entre les cylindres étireurs 4 et le point de convergence 12, ce qui se traduit par des pertes de fibres à la sortie des cylindres étireurs 4, suite à un mauvais accrochage des fibres. Par exemple, on a obtenu d'excellents résultats à la vitesse de 215 mètres par minute avec un étirage, entre les étireurs 4 et les délivreurs 10, égal à 1,53% et un fil 2 x 25 tex composé de 45% de laine de 27 microns et de 55% de polyester de 3 deniers. Ainsi, on règle la différence de vitesse entre les cylindres étireurs 4 et les cylindres délivreurs 10 en fonction des paramètres de filage et de la vitesse de déplacement. Si la tension est par contre trop forte, le fil est trop tendu, ce qui entraîne un risque de casse.If the tension is too low, too little torsion is found in the strand between the stretching cylinders 4 and the point of
Dans le cas où l'on utilise des organes de torsion à friction assurant à la fois une composante de torsion et une oomposante d'avancée du fil il peut être intéressant de régler la tension du fil par variation de cette composante d'avancée, indépendamment du réglage de tension entre les cylindres délivreurs et étireurs . Par exemple lorsque l'on utilise deux courroies croisées sans fin ce réglage ce fait par variation de l'angle des deux courroies.In the case where friction torsion members are used which provide both a torsion component and a thread advancement component, it may be advantageous to adjust the thread tension by variation of this advancement component, independently the tension adjustment between the delivery and stretching cylinders. For example when using two endless crossed belts this adjustment is done by varying the angle of the two belts.
Lorsque le filé de fibres est au stade de la retorsion, sa résistance est en général trop faible pour permettre une marche sans problèmes et le fil casse . souvent entre le point de dévidage du fil sur la bobine et le point de prise de torsion.When the yarn of fibers is in the twisting stage, its resistance is generally too weak to allow a walk without problems and the yarn breaks. often between the wire feed point on the spool and the torsion point.
Or on a trouvé qu'une très légère cohésion supplémentaire suffisait pour assurer le dévidage du fil. En fonction de la cohésion initiale des fibres, un simple ensimage cohésif peut suffire. On peut adjoindre ce produit cohésif aux fibres, soit au niveau de la préparation des mêches soi au niveau de la machine à filer, entre l'organe de torsion des brins et l'organe de bobinage.However, it has been found that a very slight additional cohesion is sufficient to ensure the unwinding of the wire. Depending on the initial cohesion of the fibers, a simple cohesive sizing may be sufficient. This cohesive product can be added to the fibers, either at the level of the preparation of the wicks itself at the level of the spinning machine, between the twist member of the strands and the winding member.
Dans les cas où cela n'est pas suffisant ou lorsque l'emploi d'ensimage est à proscrire, on a trouvé que l'adjonction de quelques tours de torsion, à l'aide d'un dispositif de fausse torsion suffisait pour assurer un bon dévidage.In cases where this is not enough or when the use of sizing is to be avoided, it has been found that the addition of a few twists, using a false twist device is sufficient to ensure good reeling.
Les dispositifs de fausse torsion sont connus. Ils peuvent être rotatifs ou opérer par friction. Ils peuvent être statiques et un simple enroulement sur une tige peut assurer une torsion par roulage en amont de la tige lorsque l'on tire sur le fil, pour autant que l'angle du fil par rapport à la tige, le diamètre de la tige en fonction de celui du fil ainsi que le pas du fil sur la tige et le coefficient de frottement du matériau de la tige, soient judicieusement choisis.False twist devices are known. They can be rotary or operate by friction. They can be static and a simple winding on a rod can ensure a torsion by rolling upstream of the rod when one pulls on the wire, provided that the angle of the wire with respect to the rod, the diameter of the rod according to that of the wire as well as the pitch of the wire on the rod and the coefficient of friction of the material of the rod, are judiciously chosen.
L'exemple de la figure 3 est un dispositif qui réalise ces impératifs. Il est constitué d'un corps 14 en matière légère qui supporte une tige 15 en forme de demi cercle sur la partie supérieure du corps 14.The example in Figure 3 is a device that achieves these requirements. It consists of a
L'utilisation du dispositif de la figure 3 sera cependant mieux comprise grâce à la figure 4 qui représente une coupe d'une broche de retordage double torsion dans laquelle la bobine de fil 16 est placée sur le pot 17 où elle est centrée grâce au centreur 18.The use of the device of FIG. 3 will however be better understood thanks to FIG. 4 which represents a section of a double twist twisting spindle in which the coil of
Le fil 19 se dévidant à la défilée, en quittant la bobine passe à travers l'oeillet 20 de la coronelle de dévidage 21. Le fil s'enroule ensuite sur la tige 15 qui est supportée par le corps 14, lui-même fixé par un moyen quelconque non représenté, sur la coronelle 21. Après avoir fait un certain nombre de tours le fil rentre dans le corps du prolongateur 22 où il va recevoir le premier tour de torsion donné par le disque de torsion(non représenté)pour ensuite passer entre le pot 17 et l'anti-ballon 23 où il reçoit le deuxième tour de torsion avant d'être bobiné sur une bobine non représentée.The
En général, dans une machine à retordre double torsion, la tension du fil et donc le nombre de tours d'enroulement sur le disque de torsion est réglée par un piston à ressort, bloqueur de torsion, non représenté, qui se trouve dans le prolongateur 22.In general, in a double twist twisting machine, the thread tension and therefore the number of turns of winding on the torsion disc is adjusted by a spring piston, torsion blocker, not shown, which is in the
Dans le cas de l'utilisation du dispositif, selon l'invention il faut, soit enlever ce piston et ainsi la torsion remonte jusqu'à la tige 15, soit avoir une distance entre ce piston et la tige 15, inférieure à la longueur des fibres.In the case of using the device, according to the invention, it is necessary either to remove this piston and thus the torsion goes up to the
En utilisant le dispositif, on règle la tension du fil, en jouant sur les paramètres suivants :
- - nombre de tours d'enroulement du fil 19 sur la tige 15,
- - diamètre de la tige 15,
- - coefficient de frottement du matériau de la tige 15,
- - angle a formé par le fil 19 et la tige 15 au moment où le fil arrive sur la tige.
- - number of turns of winding of the
wire 19 on therod 15, - - diameter of the
rod 15, - - coefficient of friction of the material of the
rod 15, - - angle α formed by the
wire 19 and therod 15 when the wire arrives on the rod.
On peut faire varier la rotation de la coronelle de dévidage 21 par des moyens classiques, par exemple, son poids, son coefficient de frottement,etc... On peut, comme avec une machine à retordre double torsion classique jouer sur la force du ressort du bloqueur de torsion, dans le cas où on l'utilise.We can vary the rotation of the
Par exemple, on a obtenu de bons résultats avec le fil 2 x 25 tex, décrit précédemment sur un métier à retordre double torsion avec une vitesse de broche de 11000 tours par minute et une torsion de 371 tours par mètre, soit un développement de 59,2 mètres par minute, en utilisant le dispositif décrit dans la figure 4 où le fil faisait 1 tour sur une tige d'acier à ressort de 0,5 millimètre de diamètre, sans utiliser de bloqueur de torsion.For example, good results have been obtained with the 2 x 25 tex yarn, described previously on a double twist twist loom with a spindle speed of 11,000 rpm and a twist of 371 rpm, a development of 59 , 2 meters per minute, using the device described in Figure 4 where the wire made 1 turn on a spring steel rod 0.5 mm in diameter, without using a torsion blocker.
On a obtenu de bons résultats avec un fil 2 x 33 tex dont l'un des brins est constitué d'un filament de 300 deniers en triacétate brillant, sans couverture de fibres et l'autre brin, constitué de fibres 100% acrylique mat 3 deniers , sans filament. Le tout étant retordu à 260 tours de broches à une vitesse de broche de double torsion de 10 000 tours par minute en utilisant le dispositif décrit sur la figure 4 où le fil 19 faisait 2 tours d'enroulement sur la tige 15 qui avait un diamètre de 0,25 millimètre, et sans utiliser de bloqueur de torsion.Good results have been obtained with a 2 x 33 tex yarn, one strand of which consists of a 300-denier filament made of shiny triacetate, without fiber covering and the other strand, consisting of fibers of 100% matt acrylic 3 deniers, without filament. The whole being twisted to 260 spindle turns at a double twist spindle speed of 10,000 revolutions per minute using the device described in Figure 4 where the
Une variante du dispositif est représentée sur la figure 5 où le fil s'enroule sur une tige droite.A variant of the device is shown in Figure 5 where the wire is wound on a straight rod.
En fonction des fils à retordre, on pourra avoir des angles différents de la tige par rapport à la verticale, de façon à changer l'angle du fil par rapport à la tige afin de varier l'intensité de fausse torsion.Depending on the yarns to be twisted, it will be possible to have different angles of the rod relative to the vertical, so as to change the angle of the yarn relative to the rod in order to vary the intensity of false twist.
Les exemples de forme de dispositif décrits sont donnés à titre non limitatif. Le seul impératif est d'avoir un enroulement du fil sur la tige avec un angle appropriée du fil par rapport à la tige. De façon plus générale, on utilise tout dispositif qui permet une fausse torsion entre le devidage et la prise de torsion, qui permet le dévidage du fil lors du retordage sans qu'il casse du fait de sa faible résistance.The examples of device form described are given without limitation. The only imperative is to have a winding of the wire on the rod with an appropriate angle of the wire with respect to the rod. More generally, any device is used which allows a false twist between the unwinding and the taking of torsion, which allows the unwinding of the thread during twisting without it breaking due to its low resistance.
Une autre variante du dispositif est représentée par la figure 6 où la tige est spiralée en forme de cône.Another variant of the device is shown in Figure 6 where the rod is spiraled into a cone.
Dans le cas où l'on retord par une autre technique de retordage, par exemple avec un continu à retordre à anneau, comme le représente la figure 7, il suffira de placer une tige 24 entre la bobine 25 et les délivreurs 26 pour avoir un certain angle du fil par rapport à la tige de façon à donner une fausse torsion suffisante pour le dévidage, dans le but d'obtenir une distance entre la tige et les délivreurs inférieure à la longueur des fibres. La tension est dans ce cas donnée par le poids de curseur 27.In the case where one twists by another twisting technique, for example with a continuous twisting ring, as shown in Figure 7, it will suffice to place a
Dans le cas où l'on retord par la technique de retordage double étape, il suffira d'adapter le dispositif de la figure 7 à la première étape d'assemblage retordage.In the case where one twists by the two-step twisting technique, it will suffice to adapt the device of FIG. 7 to the first twisting assembly step.
Ainsi, selon l'invention, on obtient un filé de fibres comportant au moins deux brins, qui ne présente pas de discontinuités, telle que noeuds, épissures ou arrêts et qui permet la réalisation de bobines de fil d'un poids important, par exemple ayant un poids d'au moins 1 kg pour des fils fins, par exemple d'environ 10 tex et des bobines de fil d'au moins 10 kg pour les fils gros, par exemple pour les fils d'environ 1000 tex.Thus, according to the invention, a yarn of fibers is obtained comprising at least two strands, which does not have any discontinuities, such as knots, splices or stops and which allows the production of spools of wire of significant weight, for example weighing at least 1 kg for fine threads, for example around 10 tex and spools of thread of at least 10 kg for coarse threads, for example for threads of around 1000 tex.
Un tel fil est représent sur la figure 8A. Comme on peut le voir, les fibres 28 sont sensiblement beaucoup plus parallèles les unes aux autres, que les fibres 29 d'un fil de la technique antérieure, toutes choses égales par ailleurs.Such a wire is shown in Figure 8A. As can be seen, the
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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AT84400738T ATE35430T1 (en) | 1983-04-14 | 1984-04-12 | METHOD AND DEVICE FOR MAKING A TWINE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8306125 | 1983-04-14 | ||
FR8306125A FR2544346B1 (en) | 1983-04-14 | 1983-04-14 | METHOD AND DEVICE FOR SPINNING FIBER YARNS, INCLUDING AT LEAST ONE CORE |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP86113383.3 Division-Into | 1986-09-29 |
Publications (2)
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EP0126659A1 true EP0126659A1 (en) | 1984-11-28 |
EP0126659B1 EP0126659B1 (en) | 1988-06-29 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86113383A Expired - Lifetime EP0217345B1 (en) | 1983-04-14 | 1984-04-12 | Method and apparatus for spinning staple fibre yarns |
EP84400738A Expired EP0126659B1 (en) | 1983-04-14 | 1984-04-12 | Method and device for manufacturing a double yarn |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP86113383A Expired - Lifetime EP0217345B1 (en) | 1983-04-14 | 1984-04-12 | Method and apparatus for spinning staple fibre yarns |
Country Status (6)
Country | Link |
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US (2) | US4903472A (en) |
EP (2) | EP0217345B1 (en) |
JP (1) | JPS6028528A (en) |
AT (2) | ATE54344T1 (en) |
DE (2) | DE3472423D1 (en) |
FR (1) | FR2544346B1 (en) |
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US4761946A (en) * | 1986-03-04 | 1988-08-09 | Fritz Stahlecker | Arrangement for the prestrengthening of thread components to be twisted together |
EP0271418B1 (en) * | 1986-12-05 | 1991-08-21 | "S.A. SCHAPPE" Société Anonyme dite: | Method for continuously producing core yarns on ring-spinning frames, the core yarns being composed of long fibres surrounded by an outer layer |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4761946A (en) * | 1986-03-04 | 1988-08-09 | Fritz Stahlecker | Arrangement for the prestrengthening of thread components to be twisted together |
DE3634464A1 (en) * | 1986-10-09 | 1988-04-14 | Fritz Stahlecker | METHOD FOR COWNING ON A SPINNING UNIT FOR GENERATING SUPPLY COILS FOR A TWIST OR THE LIKE. |
US4790130A (en) * | 1986-10-09 | 1988-12-13 | Fritz Stahlecker | Spinning unit piecing process for producing feed spools |
USRE34170E (en) * | 1986-10-09 | 1993-02-02 | Spinning unit piecing process for producing feed spools | |
EP0271418B1 (en) * | 1986-12-05 | 1991-08-21 | "S.A. SCHAPPE" Société Anonyme dite: | Method for continuously producing core yarns on ring-spinning frames, the core yarns being composed of long fibres surrounded by an outer layer |
CN103342255A (en) * | 2013-06-24 | 2013-10-09 | 苏州锦凯纺织有限公司 | Tow guiding device with tow dividing bar |
Also Published As
Publication number | Publication date |
---|---|
DE3482659D1 (en) | 1990-08-09 |
ATE54344T1 (en) | 1990-07-15 |
US4903472A (en) | 1990-02-27 |
FR2544346B1 (en) | 1987-09-04 |
EP0217345A3 (en) | 1988-01-27 |
EP0126659B1 (en) | 1988-06-29 |
EP0217345A2 (en) | 1987-04-08 |
JPS6028528A (en) | 1985-02-13 |
US5115630A (en) | 1992-05-26 |
ATE35430T1 (en) | 1988-07-15 |
DE3472423D1 (en) | 1988-08-04 |
FR2544346A1 (en) | 1984-10-19 |
EP0217345B1 (en) | 1990-07-04 |
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