US3802174A - Method and apparatus for producing of staple fibre yarn - Google Patents

Method and apparatus for producing of staple fibre yarn Download PDF

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Publication number
US3802174A
US3802174A US00168629A US16862971A US3802174A US 3802174 A US3802174 A US 3802174A US 00168629 A US00168629 A US 00168629A US 16862971 A US16862971 A US 16862971A US 3802174 A US3802174 A US 3802174A
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sliverlet
rollers
drafting
draw
twisting
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H Landwehrkamp
F Schuster
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Rieter Ingolstadt Spinnereimaschinenbau AG
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Schubert und Salzer Maschinenfabrik AG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/28—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by inserting twist during drafting

Definitions

  • a method for producing staple fibre yarn comprises positively drafting sliver to produce a staple fibre sliverlet, then twisting the staple fibre sliverlet by means of a twisting part to produce yarn which is then supplied to a bobbin and wound on the bobbin.
  • the sliverlet is subjected to negative drafting after the positive drafting and is simultaneously twisted in the negative drafting zone in a certain direction.
  • the invention relates to theproduction of staple fibre yammore particularly. by drafting fibre sliver, twisting it by means of atwister and then supplyingit to a bob,- binfor winding up.
  • An object of the invention is to be able toproduce staple fibre yam as economically as possiblewith ahigh speedofproduction without the yarn producedhaving disadvantageous characteristics and without having essential departures from the characteristics of yarns producedin ring spinning'frames as concerns the range of application.
  • the prior art The opemend-spinning method for producing yarns of staplefibres, moreparticularly using a rotating spinning chamber, produces a thread with a comparatively high speed of spinning.
  • the thread has a high degree of evenness but its tensile strength is about 20 percent less than that of ring spun yarn
  • Animal fibres, especially wool, which have a highcontent of fat, canonly be processed by this method with great difficulty.
  • fibre sliver was to be twisted alternately in opposite directions and the twist was to be stabilised or fixed in the sliver by bringing it together with another sliver so that the two slivers became twisted together (see German Specification 1,510,562).
  • the product has alternating directions of twist which bring about certain difficulties in further processing, for example, in the case of dyeing the alternate directions of twist become visible.
  • breakages in the thread can only be removed by knots which are always apparent.
  • a bundled yarn was to be produced by drafting staple fibres, twisting in a twister with the help of a fluid flowing with at least half the speed of sound, and wound up.
  • the staple fibres were to be drafted by the drafting rollers in a flat sliver form with a breadth of at least 7.6 mm and passed from the drafting rollers by means of suction nozzle to the twister (see German Patent Publication l,287,984).
  • the yarn produced in this manner has a substantially untwisted fibre core, which is held together by irregularly twisted encasing fibres.
  • One aim of the invention is that of producing a yarn in an economic manner with a high speed of production, which yarn has a twisted structure over its whole cross-section.
  • the present invention consists in a method for producing staple fibre yarn comprising positively drafting sliver to produce a staple fibre sliverlet, then twisting the staple fibre sliverlet by means of a twisting part to produce yarn which is then supplied to a bobbin and wound on the bobbin, the sliverlet being subjected to negative drafting after the positive drafting and simultaneously being twisted in the negative drafting zone in a certain direction.
  • the twisted fiibre sliverlet can be drafted before winding on to a bobbin.
  • the strength of the yarn can also be increased by adopting the feature that fibres of the staple fibre sliverlet are joined together by bondingin the zone of negative drafting with a spacing which is less than the mean staple fibre length.
  • the adhesion of the yarn can be carried out practically at points so that there are no difficulties in winding up owing to the different coils on the bobbin sticking together, it may be convenient in many cases for the staple fibre sliverlet to be dried after bonding but before leaving the zone of negative drafting.
  • the doubling does not occur, as is conventional, in a separate working process, but the yarns of several spinning stations are doubled before being wound on to a single bobbin.
  • the yarns of several spinning stations are doubled before being wound on to a single bobbin.
  • the produced yarn can individually or together with several yarns be subjected to a twisting process in order to achieve a greater tensile strength.
  • the invention also includes apparatus for producing staple fibre yarn including means for positively drafting fibre sliver to produce a staple fibre sliverlet; means for twisting the sliverlet to produce a yarn; means for winding up the yarn on a bobbin; the improvement comprising means for subjecting the sliverlet to negative drafting after the positive drafting and including a pair of draw-off rollers and a preceding pair of supply cylin ders having a higher peripheral speed than the draw-off rollers, the means for twisting the sliverlet being arranged between such supply cylinders and the draw-off rollers and exerting a continuous twisting operation in a predetermined direction.
  • at least one pair of drafting rollers is provided downstream from the pair of draw-off rollers, having a higher peripheral speed than its supply rollers.
  • a pair of rollers can be arranged in the negative draft zone, of which at least one rolller has peripherally evenly distributed ribs for the intermittent nipping or pinching of the staple fibre sliverlet with a spacing which is less than the mean staple fibre length so that the staple fibre sliverlet is bonded, each time it is nipped or pinched.
  • the ribs can be arranged to be engaged tangentially by a supply conveyor.
  • At least one of the rollers can be provided with heating means.
  • heating means In order to bring about a more rapid drying of the adhesive joints in the fibre sliverlet it is possible to provide a heated zone downstream from the pair of rollers.
  • a fibre opening or separating device can be provided which opens into a mixing chamber arranged between the pair of supply cylinders and the pair of draw-off rollers in order to provide additionally separated fibres to the spinning process; the mixing chamber is preferably arranged upstream from the means for twisting the sliverlet.
  • the sliverlet As means for twisting the sliverlet it is possible to make use of conventional devices such as those used for imparting a false twist. They can be mechanical and mechanically or pneumatically driven. However, it is preferred to make use of a pneumatic twisting nozzle, for the method in accordance with the invention, for example as described in the German Patent Specification 1,287,984 or 1,062,153. Conveniently the pneumatic twisting nozzle is adapted to produce a subatmospheric pressure at its fibre sliver inlet in order to exert a sucking action on the yarn or the fibres emerging from the mixing chamber. This can be carried out by constructing the twisting nozzle as an injector or by connecting it with a source of vacuum or suction.
  • the means for twisting the fibre sliverlet has preferably a flat inlet opening operating as a condenser which is so arranged with respect to the pair of supply cylinders that the fibre sliver emerging from the pair of supply cylinders is deflected. This leads to a satisfactory twisting action being exerted on the sliver.
  • FIG. 1 shows a spinning device in accordance with the invention in principle with a negative drafting zone and a subsequent drafting action.
  • FIG. 2 shows a spinning device with a mechanical twisting part.
  • FIG. 3 shows a spinning device with a fibre spreading device and several twisting nozzles together with a mechanical twister.
  • FIG. 4 shows diagrammatically the structure of yarn produced in accordance with the invention.
  • FIG. 5 shows the whole yarn producing process diagrammatically, extending from a twin sliver supply to the threads produced.
  • FIG. 6 shows a spinning device with a mixing chamber.
  • FIGS. 7 to 9 show various constructions and arrangements of the fibre inlet end of the twisting part.
  • FIG. 10 shows a spinning device or apparatus with a bonding device operating intermittently.
  • FIG. 1 shows diagrammatically the structure of a yarn produced with the device in accordance with FIG. 10.
  • FIG. 1 Apparatus in accordance with the invention for carrying out this method is shown in FIG. 1.
  • a conventional long or short staple drafting mechanism 1 which can be constructed in the form of a multiroller or belt drafting mechanism.
  • the positive drafting zone A constituted by the drafting mechanism 1 is followed by a negative drafting zone B, which is delimited on the one hand by a pair of supply cylinders 2 and a pair of draw-off rollers 3 on the other hand.
  • the pair of supply cylinders 2 is preferably arranged to serve simultaneously as the last pair of rollers of the preceding drafting mechanism 1.
  • the pair of draw-off rollers 3 has a lower peripheral speed than the pair of supply cylinders 2 so that between the latter and the pair of draw-off rollers 3 a negative drafting action results preferably in the order of magnitude of 0.7 to 0.98, that is to say the peripheral speed of the pair of draw-off rollers 3 is 0.7 to 0.98
  • FIG. 1 comprises a stationary cylindrical casing 50in which an insert 51 of substantially cylindrical form is arranged. Between the casing 50 and the insert 51 an air chamber 52 is provided owing to the shape of these two parts. This air chamber 52 is connected via a pipe 53 with a source of compressed air which is not shown.
  • the insert 51 has a central hole 54 for the fibre sliverlet F, which hole 54 is connected with the air chamber 52 by means of air channels 55 opening tangentially into the hole 54 for producing a vortex.
  • the channels 55 are preferably inclined toward hole 54 in the direction of movement of the fibre sliverlet. In this manner a vacuum is produced at the fibre inlet end 56 and this vacuum facilitates the introduction of the fibre sliverlet F into the twisting nozzle 5.
  • the apparatus whose construction has just been de' scribed operates in the following manner.
  • the supplied material M (flyer roving or drafted sliver) is drafted in the drafting mechanism 1 to produce a fibre sliverlet F which has the same thickness as that of the yarn to be produced.
  • the sliverlet is passed into the negative drafting zone B through the twisting nozzle 5. Owing to the air vortex in the twisting nozzle 5 the piece of fibre material between the twisting nozzle 5 and the supply rollers 2 is twisted. After leaving the twisting nozzle 5 the thread tends to become completely untwisted again.
  • the finished thread G is then wound in a conventional manner with a slight stretching or drafting effect on the yarn bobbin 4.
  • the twisting nozzle 5 can be constructed in various different forms and be arranged in various different fashions.
  • thesliver inlet end 56 has a flat inlet opening 57 acting as a condenser.
  • a satisfactory twisting of the material is achieved by causing the fibre sliverlet F emerging from the pair of supply rollers 2 to be bent or deflected from its direct path of movement.
  • the twisting nozzle 5 can either be tilted or can be arranged was to be offset with respect to the line running between the nip of supply cylinders 2 and the nip of draw-off rollers 3 (see FIG. 9), or, as a further possibility, it can be provided with a guide part 58 arranged above the nozzle 57 (see FIG. 7). This guide part deflects the fibre sliverlet F from the connecting line running between the nip of delivery cylinders 2 and passage 54 through the twisting nozzle 5.
  • the twisting nozzles described up till now are all constructed as injectors and connected with a supply of compressed air.
  • the suction effect or vacuum at the nozzles 57 can also be produced by connection of the air chamber 52 with a source of vacuum.
  • the channels 55 are inclined outwardly from passage 54 in the direction of passage of the fibre sliver, as can be seen from FIG. 8.
  • a twister constructed in the form of a mechanically acting strip spring gripping device 7 arranged in the negative drafting zone B, as shown in FIG. 2.
  • the strip spring gripping device 7 can comprise, for example, strip springs 70 arranged in a circular fashion in a carrier 71. These strip springs 70 are biased so as to be pressed from all sides on to the thread G and they exert a gripping action on it.
  • the carrier 71 with the strip springs 70 is arranged at the end of a tube 72, which is journalled in a stationary part 73 of the apparatus by means of ball bearings 74 and is driven by means of a belt 75.
  • twister 5 or 7, respectively it is not absolutely essential for the twister 5 or 7, respectively, to be arranged immediately downstream from the pair of delivery cylinders 2.
  • the thread G can also be spun with an arrangement in accordance with FIG. 2.
  • the distance between the twister and the nip of the pair of draw-off rollers 3 it is, however, necessary for the distance between the twister and the nip of the pair of draw-off rollers 3 to be less than the length of the staple fibers, as otherwise the strength of the yarn is not sufficient to overcome the gripping pressing action.
  • the feature is adopted (see FIG.
  • the voltage can be between 5,000 and 30,000. Although this voltage is not dangerous owing to the very low currents, it is naturally possible to provide insulation.
  • the twister 5 or 7 can be insulated from the rest of the apparatus and be connected with the high voltage.
  • the contacting part 76 is arranged in the negative drafting zone B, since in the thread G a false twist is produced both upstream and also downstream from the twister 5 or 7.
  • the contacting part 76 is arranged upstream from the twisting part but it can also be arranged between the twister and the pair of draw-off rollers 3.
  • the false twist D (FIG. 4) is applied by the twister which is constructed as a mechanically acting centrifugal gripping device 77 up stream from the pair of draw-off rollers 3.
  • the centrifugally acting gripping device 77 can be of conventional construction and has a pair of two-armed gripping elements 79 held in a carrier 78. One arm of each element 79 is thrown outwards by centrifugal force so that its other arm presses the thread G against the corresponding arm of the other gripping element 79.
  • the high voltage applied by the contacting part 76 causes the fibre ends E to become erect (FIG. 4) and they are wrapped about the fibre core K which is also twisted, in the pneumatic twisting nozzle or nozzles 5 and 59.
  • the fibre G After leaving the centrifugally acting gripping device 77, the fibre G becomes partially untwisted but is hindered from becoming completely untwisted owing to the wrappings or entanglements V.
  • the thread G produced in this manner has a completely irregular twist structure, but this twist is distributed both along the length and also over the cross'section. The thread G therefore appears in surface view to have an even structure.
  • the threads G produced in accordance with the present invention are then cleaned and] doubled in a conventional manner on a doubling machine and finally twisted in a twisting frame.
  • the apparatus for carrying out this method is shown in FIG. 5.
  • the material M supplied for example on bobbins 10 is positively drafted in the drafting zone A of the drafting mechanism 1 and then passes into the negative drafting zone B.
  • a common twister which can be constructed, for example, as a pneumatic twisting nozzle 5.
  • the thread G of a spinning station I run off by the pair of draw-off rollers 3 can, if desired, be drafted again in a further positive drafting zone C and is then doubled with the thread or threads G of further spinning stations II etc.
  • the threads G can be set before the doubling so that the twist is set. For this purpose it is possible to make use of a conventional setting device 60.
  • the thread G wound on the yarn bobbin 4 can then be subjected to a twisting process individually or together with other threads in order to obtain a high tensile strength in this manner.
  • This working step of twisting is indicated diagrammatically at 61 in FIG. 5.
  • a conventional fibre opening device 8 (FIG. 6) is arranged in the spinning zone which feeds small quantities of individual fibres H to the pre-twisted thread G.
  • the ratio of the free fibres H to the thread core K can be set very precisely and be made to suit the respective spinning conditions and yarn characteristics desired.
  • the fibre opening device 8 consists in a conventional manner of a housing 80, in which the supply rollers 81 and the opening roller 82 are journalled.
  • the fibre opening device 8 has a duct 83 opening into a mixing chamber 84 which is located between the pair of supply cylinders 2 and the pair of draw-off rollers 3.
  • a twister which is preferably constructed as a pneumatic twisting nozzle 5.
  • the twisting nozzle 5 can be arranged upstream from the mixing chamber 84 but it is convenient for the mixing chamber 84 to be arranged upstream from the twisting nozzle 5. In this manner the vacuum produced and acting upon the sliver inlet end 56 aids the transport of the fibres H, detached by the opening roller 82 from the supplied fibre band L, to the mixing chamber 84.
  • the thread G produced in accordance with the method of the invention shown in FIG. 6 consists of a mixture of true and falsly twisted fibre parts.
  • a second positive drafting zone C can also be provided in the embodiments of FIGS. 2, 3 and 6, and also it is possible for the winding up device 4, 40 to be provided for several spinning stations I, II etc. in the case of the devices shown in FIGS. 1 to 3 and 6.
  • the twister can be constructed as may be desired as a pneumatic twisting nozzle 5 or as a strip spring gripping means 7 or a centrifugal gripping means 77, or in any other suitable manner.
  • the staple fibre sliver F can be bonded with a spacing which is less than the mean staple fibre length 0.
  • a thread G produced in this manner is shown in FIG. 11.
  • the points 9 at which bonding has been carried out on the thread G are spaced at a distance N which is less than the mean staple fibre length 0 of the processed material M.
  • FIG. 10 A device with which such a thread G can be produced is shown in FIG. 10.
  • the strip spring gripping means 7 (FIG. 2) or the centrifugal gripping means 77 (FIG. 3)
  • a pair of rollers 90 is provided in the negative drafting zone B. Both rollers 91 and 92 of this pair of rollers 90 are driven positively with the same peripheral speed; and the roller peripheries have evenly spaced ribs 93 with the pitch or circumferential spacing N.
  • the two rollers are so arranged in relation to each other that their ribs 93 adjacent to each other always come to be located simultaneously on the plane RR passing through the axes of the rollers 91 and 92. Furthermore, one of the rollers 91 and 92 is provided with a conveying means 20 which is tangent to the ribs 93 in their path of travel.
  • This conveying means can be variously constructed, for example in the form of a ribcontacting roller, or a transport belt 21 which is driven over an idler roller 22 and supplies a viscous or liquid adhesive to the ribs 93 of the roller 91.
  • the staple fibre sliverlet F is thus, as just described, twisted by the twisting nozzle 5 so that the twist proceeds as far as the supply cylinders 2 on the one hand and the pair of draw-off rollers 3 on the other hand as long as the fibre sliverlet is not gripped by the pair of rollers 90.
  • the rollers 91 and 92 which are both positively driven regularly pinch the thread G with the distance N, this being the distance between the ribs 93 of the rollers. Since the ribs 93 have previously been provided with a coating of adhesive by the transport belt 21, the staple fibre sliverlet is also wetted by the ribs 93 with the adhesive and the fibres are connected with each other in an even better manner.
  • the twist imparted by the twisting nozzle 5 can no longer progress towards the pair of supply cylinders 2 but can only progress as fas as the pinch line of the pair of rollers so that twist is only imparted for the instant in the zone P.
  • the zone Q there is, however, so much twist as to be sufficient for ensuring a reliable binding in of the fibres as the material leaves the pair of supply cylinders 2.
  • the twist can proceed further along the whole negative drafting zone B so that the brief pinching of the thread G has no disadvantageous effect on the binding in of the fibres. Since the fibres are furthermore not open in the negative drafting zone B but are twisted, the fibres will not be picked off by the rollers 91 and 92.
  • the thread G is wound with the help of the winding roller 40 with substantial crossing on the yarn spool 4, when it has been drawn off by the pair of draw-off rollers 3 from the negative drafting zone B. Since the bonding locations are very small, there is no sticking together of the individual lengths of thread.
  • the rollers of the pair of rollers 90 can be constructed in different fashions.
  • one of the rollers can have a smooth surface and only the other roller is provided with ribs 93. If both rollers which are driven positively are provided with ribs 93, they can be angularly off-set so that the ribs 93 of the one roller make contact with the other roller precisely in the middle between two adjacent ribs 93.
  • the distance between two consecutively following ribs 93 is in this case twice as large as in the case with the embodiment shown in FIG. 10.
  • the staple fibre sliverlet F is in this case pinched alternately between one rib 93 of the left-hand roller 91 engaging the periphery of right-hand roller 92 and then one rib 93 of the right-hand roller 92 engaging the periphery of left-hand roller 91.
  • the ribs 93 preferably have a rounded profile.
  • the ribs 93 can have small notches or grooves running in the peripheral direction of the rollers.
  • a respective guide element 62 is provided above and below the pair of rollers 90, which guide elements are preferably arranged so that they can be twisted with a common rail 63 parallel to the nip line of the pair of rollers 90 in order to avoid an uneven running-in of the rollers and ribs 93.
  • one of the rollers of the pair of rollers 90 is resiliently journalled.
  • the opposite ends of one roller of the pair of rollers 90 are carried by a pair of levers 11 which are attached to a bracket 12.
  • the example in FIG. shows roller 91 being so carried, with only one lever of the pair being visible.
  • a spring 13 draws the left-hand roller 91 towards the right-hand roller 92 and the minimum distance between the rollers can be adjusted by means of a setting screw 14 which is arranged in the bracket 12 and serves to provide an abutment or stop for one end of lever 11.
  • roller 91 In order to guarantee satisfactory driving despite the adjustment of the roller 91 the roller is driven in a conventional manner by means of a sprocket chain drive with a jockey roller or with the help of a gear wheel mounted on the shaft 94, which meshes with a gear wheel mounted on the shaft 15 of the pair of levers 11 and is rocked with this pair of levers 11.
  • Such drives can be of a conventional construction and are therefore not shown.
  • the ribs of one or both rollers of the pair of rollers 90 can consist of elastic material such as for example hard rubber or a suitable plastic material.
  • the adhesive can be supplied in various different ways. Instead of the adhesive being supplied by a belt 21 or by a roller to the ribs 93, it can be mixed with the supply material M as a non-active powder form and be made active with the help of a suitable material for activation supplied with the help of the conveyor belt 21 or a roller and the ribs 93.
  • the belt 21 or roller or other conveying means can, however, be dispensed with and instead one or both of the rollers 91 and 92 can be constructed as a heating element so that the adhesive supplied with the supply material is activated by the action of heat.
  • the pair of rollers 90 can be followed by a heating zone. It is advantageous, for this purpose, to connect the twisting nozzle 5 with a drying tube 59 or nozzle, which is supplied with dryheating air via the pipe 53 and the twisting nozzle 5. The air then passes through the tube or nozzle 59.
  • the heating zone can also be in the form of a heated roller which has the staple sliverlet F looped partially or completely around it and the heating also takes place with the help of the heating element or a current of hot air or steam, which is passed through the roller. In this case the roller may possibly replace the pair of draw-off rollers 3.
  • the further processing of the thread G produced in this manner can be carried out in the manner of procedure already described in connection with FIG. 5.
  • the adhesive is dissolved out of the thread G again by the finishing process. Therefore, the most suitable adhesives are water-soluble starches or glues.
  • connection of the fibres of the staple sliverlet F can be carried out by welding instead of applying adhesive.
  • the rollers must be capable of being heated.
  • This method can be used for the spinning of pure synthetics as for example polyamide, polyester, polypropylene, polyacryl and also from mixtures of synthetic and natural fibres.
  • an endless synthetic thread can be added to a supply of staple fibres.
  • the synthetic thread is supplied to the outlet pair of cylinders 2 of the drafting mechanism 1 and runs together with the staple sliverlet F through the negative drafting zone B, where it is caused to become soft or is melted at points by the pair of rollers so that the staple fibres are connected together.
  • a method for producing staple fibre yarn comprising the steps of positively drafting sliver to produce a staple fibre sliverlet, negatively drafting the sliverlet after the positive drafting and simultaneously with negative drafting twisting the sliverlet in a predetermined direction to produce yarn, and supplying the yarn to a bobbin for winding thereon.
  • Apparatus for producing staple fibre yarn including means for positively drafting fibre sliver to produce a staple fibre sliverlet, having a drafting zone, means for twisting the sliverlet to produce yarn, and means for winding the yarn on a bobbin, the improvement comprising negative drafting means following the positive drafting means drafting zone in the direction of sliverlet travel and including a pair of draw-off rollers and a pair of supply rollers preceding said draw-off rollers and having a higher peripheral speed than the peripheral speed of said draw-off rollers, the means for twisting the sliverlet being arranged between said supply rollers and said draw-off rollers and exerting a continuous twisting operation on the sliverlet in a predetermined direction.
  • the means for twisting the sliverlet includes a flat sliverlet inlet opening and means for deflecting the sliverlet relative to a line tangent to the nip of the pair of supply rollers as the sliverlet emerges from the nip of the supply rollers.
  • the means for twisting includes pneumatic fluid supply means for supplying pneumatic fluid for flow through the pneumatic twisting nozzle in a direction to produce a pressure at the nozzle fibre sliverlet inlet end lower than the pressure at the nozzle outlet end.
  • the means for twisting the sliverlet includes a source of compressed air connected to the pneumatic twisting nozzle.
  • Apparatus for producting staple fibre yarn ineluding means for positively drafting fibre sliver to produce a staple fibre sliverlet, having a drafting zone, means for twisting the sliverlet to produce yarn, and means for winding the yarn on a bobbin the improvement comprising negative drafting means following the positive drafting means drafting zone in the direction of sliverlet travel and including a pair of draw-off rollers and a first pair of supply rollers preceding said draw-off rollers and having a higher peripheral speed than the peripheral speed of said draw-off rollers, the means for twisting the sliverlet being arranged between said supply rollers and said draw-off rollers, and second positive drafting means following the negative drafting means in the direction of sliverlet travel and including a second pair of supply rollers and a pair of drafting rollers having a higher peripheral speed than the peripheral speed of said second pair of supply rollers.
  • Apparatus for producing staple fibre yarn including means for positively drafting the fibre sliver to produce a staple fibre sliverlet having a drafting zone, means for twisting the sliverlet to produce yarn, and means for winding the yarn on a bobbin, the improvement comprising negative drafting means following the positive drafting means drafting zone in the direction of sliverlet travel and including a pair of draw-off rollers and a pair of supply rollers preceding said draw-off rollers and having a higher peripheral speed than the peripheral speed of said draw-off rollers, the means for twisting the sliverlet being arranged between said supply rollers and said draw-off rollers, and bonding means for joining the fibres of the fibre sliverlet together at locations spaced apart a distance less than the mean staple length.
  • the bonding means include a pair of rollers arranged between the pair of supply rollers and the pair of draw-off rollers, at least one roller of said pair of bonding means rollers having a plurality of rib means evenly spaced about such roller periphery for cooperating with the other bonding means roller to intermittently pinch the sliverlet and thereby to produce the spaced joined locations.
  • the bonding means includes conveying means having a portion disposed tangentially of the cylinder defined by the rib means of one bonding roller for intermittent engagement with such rib means.
  • the bonding means includes means for heating at least one of the bonding rollers.
  • the bonding means includes a heating zone following the bonding means rollers in the direction of sliverlet travel, and means in the heating zone for heating the bonded fibre material.
  • Apparatus for producing staple fibre yarn including means for positively drafting fibre sliver to produce a staple fibre sliverlet having a drafting zone, means for twisting the sliverlet to produce yarn, and means for winding the yarn on a bobbin, the improvement comprising negative drafting means following the positive drafting means drafting zone in the direction of sliverlet travel and including a pair of draw-off rollers and a pair of supply rollers preceding said draw-off rollers and having a higher peripheral speed than the peripheral speed of said draw-off rollers, the means for twisting the sliverlet being arranged between said supply rollers and said draw-off rollers, a fibre opening device, and mixing chamber means arranged between said pair of supply rollers and said pair of draw-off rollers into which said fibre opening device is arranged to discharge fibres.
  • Apparatus for producing staple fibre yarn including means for positively drafting fibre sliver to produce a staple fibre sliverlet having a drafting zone, means for twisting the sliverlet to produce yarn, and means for winding the yarn on a bobbin, the improvement comprising negative drafting means following the positive drafting means drafting zone in the direction of sliverlet travel and including a pair of draw-off rollers and a pair of supply rollers preceding said draw-off rollers and having a higher peripheral speed than the peripheral speed of said draw-off rollers, the means for twisting the sliverlet being arranged between said supply rollers and said draw-off rollers, and a twist setting device located before the winding means relative to the direction of sliverlet travel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US00168629A 1970-08-26 1971-08-03 Method and apparatus for producing of staple fibre yarn Expired - Lifetime US3802174A (en)

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DE19702042387 DE2042387A1 (de) 1970-08-26 1970-08-26 Verfahren und Vorrichtung zur Herstellung eines Stapelfasergarnes

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BE (1) BE770552A (enrdf_load_stackoverflow)
BR (1) BR7105491D0 (enrdf_load_stackoverflow)
CA (1) CA959723A (enrdf_load_stackoverflow)
CH (3) CH542298A (enrdf_load_stackoverflow)
CS (1) CS170171B2 (enrdf_load_stackoverflow)
DE (1) DE2042387A1 (enrdf_load_stackoverflow)
FR (1) FR2103503B1 (enrdf_load_stackoverflow)
GB (1) GB1368826A (enrdf_load_stackoverflow)
SU (1) SU445210A3 (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003194A (en) * 1973-04-10 1977-01-18 Toray Industries, Inc. Method and apparatus for producing helically wrapped yarn
US4009563A (en) * 1973-11-10 1977-03-01 Bayer Aktiengesellschaft Apparatus for false-twisting synthetic filament yarns
US4056924A (en) * 1974-03-29 1977-11-08 John Umiastowski Yarn-twisting method and apparatus
US4064684A (en) * 1974-08-21 1977-12-27 Hollandse Signaalapparaten B.V. False twisting unit
US4099370A (en) * 1974-03-29 1978-07-11 John Umiastowski Twisted core yarn
US4112658A (en) * 1975-05-06 1978-09-12 Murata Kikai Kabushiki Kaisha Spinning apparatus for spun yarn
US4152885A (en) * 1977-07-01 1979-05-08 Hercules Incorporated Interlocked yarn and method of making same
US4207729A (en) * 1975-05-27 1980-06-17 Agence Nationale De Valorization De La Recherche (Anvar) Method and apparatus for coating textile strands or threads for use in hoisery or weaving
US4228643A (en) * 1977-12-01 1980-10-21 Hollandse Signaalapparaten B.V. Method for the manufacture of twistless or substantially twistless yarn
US4414800A (en) * 1980-04-01 1983-11-15 Toray Industries, Inc. Twisted yarn and method of producing the same
US4499717A (en) * 1981-07-22 1985-02-19 N P S P "Novotex" Method of and apparatus for producing twistless yarns from glued separate fibers fitted together
US4507913A (en) * 1982-06-07 1985-04-02 Burlington Industries, Inc. Vacuum spinning
US4574579A (en) * 1983-02-07 1986-03-11 Chao Sing N One process twist and ply twist yarn spinning
US4635435A (en) * 1984-12-03 1987-01-13 Burlington Industries, Inc. Vacuum spinning from sliver
US4685179A (en) * 1983-10-13 1987-08-11 World Tech Fibres, Inc. Air processing apparatus
US4782565A (en) * 1983-10-13 1988-11-08 World Tech Fibres, Inc. Air processing apparatus
US5392588A (en) * 1982-06-07 1995-02-28 Burlington Industries, Inc. Spinning with hollow rotatable shaft and air flow
US6158091A (en) * 1998-09-08 2000-12-12 Zinser Textilmaschinen Gmbh Drafting frame for a spinning machine having a roving compactor
CN103866439A (zh) * 2012-12-07 2014-06-18 索若德国两合股份有限公司 气流纺纱装置

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DE2424769C2 (de) * 1974-05-22 1988-05-05 Götzfried, Edith, 8900 Augsburg Vorrichtung zum pneumatischen Falschdrallspinnen
DE2531773C2 (de) * 1975-07-16 1986-07-03 Edith 8900 Augsburg Götzfried Vorrichtung zum pneumatischen Spinnen
JPS52107349A (en) * 1976-03-04 1977-09-08 Murata Machinery Ltd Spun yarn and method of producing same
JPS53119334A (en) * 1977-03-24 1978-10-18 Murata Machinery Ltd Direct spinning device
PL107514B1 (pl) 1977-03-31 1980-02-29 Ts Osrodek Badawczo Rozwo Urzadzenie do wytwarzania przedzy rdzeniowej
DE2921515A1 (de) * 1978-06-12 1979-12-20 Elitex Zavody Textilniho Spindelloses spinnverfahren zur herstellung von garnen und vorrichtung zum durchfuehren des verfahrens
DE3019195C2 (de) * 1980-05-16 1986-04-17 Filature Saint André, Saint André, Nord Vorrichtung zum Verspinnen von Stapelfaserbändern zu einem Garn
AT367104B (de) 1981-02-09 1982-06-11 Fehrer Ernst Vorrichtung zum herstellen eines garnes
DE3205303A1 (de) * 1981-02-20 1982-09-09 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Vorrichtung zum offenendspinnen
JPS6056817B2 (ja) * 1981-10-13 1985-12-12 村田機械株式会社 紡績糸
US4479348A (en) * 1981-10-27 1984-10-30 Kabushiki Kaisha Toyoda Jidoshokki Apparatus for spinning fasciated yarn
JPS58109630A (ja) * 1981-12-21 1983-06-30 Toyoda Autom Loom Works Ltd 結束紡績方法およびその装置
FR2519035A1 (fr) * 1981-12-28 1983-07-01 Rhone Poulenc Fibres Produit textile type file de fibres, procede et dispositif pour sa fabrication
DE3310285C2 (de) * 1982-05-07 1986-10-02 Ernst Dr. Linz Fehrer Verfahren und Vorrichtung zum Herstellen eines Garnes aus einer verstreckten Faserlunte
FR2533593A1 (fr) * 1982-09-27 1984-03-30 Rhone Poulenc Fibres Produit textile type file de fibres, procede et dispositif pour sa fabrication
DE3631400A1 (de) * 1986-09-16 1988-03-17 Fritz Stahlecker Verfahren und vorrichtung zum pneumatischen falschdrallspinnen
JPS6385123A (ja) * 1986-09-22 1988-04-15 Murata Mach Ltd 紡績糸の製造方法及び製造装置
DE102005022186A1 (de) * 2005-05-13 2006-11-16 Saurer Gmbh & Co. Kg Verfahren zum Herstellen eines luftgesponnenen Fadens
DE102006006505B4 (de) * 2005-08-30 2019-12-12 Dr.-Ing. König Reinhard Verfahren und Vorrichtung zur Kompaktierung von bandförmigen Fasermaterial

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US2515294A (en) * 1947-06-18 1950-07-18 Us Rubber Co Freezing unit defroster
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US2515294A (en) * 1947-06-18 1950-07-18 Us Rubber Co Freezing unit defroster
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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003194A (en) * 1973-04-10 1977-01-18 Toray Industries, Inc. Method and apparatus for producing helically wrapped yarn
US4009563A (en) * 1973-11-10 1977-03-01 Bayer Aktiengesellschaft Apparatus for false-twisting synthetic filament yarns
US4056924A (en) * 1974-03-29 1977-11-08 John Umiastowski Yarn-twisting method and apparatus
US4099370A (en) * 1974-03-29 1978-07-11 John Umiastowski Twisted core yarn
US4064684A (en) * 1974-08-21 1977-12-27 Hollandse Signaalapparaten B.V. False twisting unit
US4112658A (en) * 1975-05-06 1978-09-12 Murata Kikai Kabushiki Kaisha Spinning apparatus for spun yarn
US4207729A (en) * 1975-05-27 1980-06-17 Agence Nationale De Valorization De La Recherche (Anvar) Method and apparatus for coating textile strands or threads for use in hoisery or weaving
US4152885A (en) * 1977-07-01 1979-05-08 Hercules Incorporated Interlocked yarn and method of making same
US4228643A (en) * 1977-12-01 1980-10-21 Hollandse Signaalapparaten B.V. Method for the manufacture of twistless or substantially twistless yarn
US4484436A (en) * 1980-04-01 1984-11-27 Toray Industries, Inc. Process for producing a twisted yarn
US4414800A (en) * 1980-04-01 1983-11-15 Toray Industries, Inc. Twisted yarn and method of producing the same
US4499717A (en) * 1981-07-22 1985-02-19 N P S P "Novotex" Method of and apparatus for producing twistless yarns from glued separate fibers fitted together
US4507913A (en) * 1982-06-07 1985-04-02 Burlington Industries, Inc. Vacuum spinning
US4713931A (en) * 1982-06-07 1987-12-22 Burlington Industries, Inc. Apparatus for vacuum spinning
US5392588A (en) * 1982-06-07 1995-02-28 Burlington Industries, Inc. Spinning with hollow rotatable shaft and air flow
US4574579A (en) * 1983-02-07 1986-03-11 Chao Sing N One process twist and ply twist yarn spinning
US4685179A (en) * 1983-10-13 1987-08-11 World Tech Fibres, Inc. Air processing apparatus
US4782565A (en) * 1983-10-13 1988-11-08 World Tech Fibres, Inc. Air processing apparatus
US4635435A (en) * 1984-12-03 1987-01-13 Burlington Industries, Inc. Vacuum spinning from sliver
US6158091A (en) * 1998-09-08 2000-12-12 Zinser Textilmaschinen Gmbh Drafting frame for a spinning machine having a roving compactor
CN103866439A (zh) * 2012-12-07 2014-06-18 索若德国两合股份有限公司 气流纺纱装置
JP2014114535A (ja) * 2012-12-07 2014-06-26 Saurer Germany Gmbh & Co Kg 空気紡績装置

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Publication number Publication date
GB1368826A (en) 1974-10-02
CS170171B2 (enrdf_load_stackoverflow) 1976-08-27
FR2103503A1 (enrdf_load_stackoverflow) 1972-04-14
CA959723A (en) 1974-12-24
BR7105491D0 (pt) 1973-04-26
DE2042387A1 (de) 1972-04-20
CH537470A (de) 1973-05-31
FR2103503B1 (enrdf_load_stackoverflow) 1974-03-29
BE770552A (fr) 1971-12-01
SU445210A3 (ru) 1974-09-30
CH1548571A4 (enrdf_load_stackoverflow) 1973-05-15
CH542298A (de) 1973-11-15

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