EP2453045B1 - Air spinning device and spinning unit - Google Patents
Air spinning device and spinning unit Download PDFInfo
- Publication number
- EP2453045B1 EP2453045B1 EP11187855.9A EP11187855A EP2453045B1 EP 2453045 B1 EP2453045 B1 EP 2453045B1 EP 11187855 A EP11187855 A EP 11187855A EP 2453045 B1 EP2453045 B1 EP 2453045B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- spinning
- spun yarn
- fiber
- chamber
- 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.)
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- 238000009987 spinning Methods 0.000 title claims description 202
- 239000000835 fiber Substances 0.000 claims description 188
- 238000004804 winding Methods 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 description 21
- 229920000728 polyester Polymers 0.000 description 21
- 239000003381 stabilizer Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000356 contaminant Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/11—Spinning by false-twisting
- D01H1/115—Spinning by false-twisting using pneumatic means
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/38—Channels for feeding fibres to the yarn forming region
Definitions
- the present invention generally relates to an air spinning device, and in particular relates to an air spinning device capable of easily performing spinning of a yarn according to fiber characteristics. Furthermore, the present invention relates to a spinning unit that includes the air spinning device.
- Air spinning devices that produce a spun yarn by twisting a fiber bundle by utilizing a swirling airflow are known in the art. Such an air spinning device supplies air into a spinning chamber to generate a swirling airflow that causes fibers, which form a fiber bundle, to swing, thereby producing a spun yarn (see, for example, Japanese published unexamined applications 2003-193337 and H6-41822 ).
- EP 1 584 715 A1 discloses a jet spinner.
- a fiber guide element and, thereafter, a spindle with a yarn guide duct are arranged. Jet nozzles open into the swirl chamber.
- the air hole is positioned such that a point of intersection of a central axis of the air hole and a wall surface of the through hole falls in a range of greater than or equal to 3 mm to less than or equal to 10 mm from a contact surface at which a downstream end surface of the fiber guide in a yarn feeding direction is received by an upstream end surface of the nozzle block in the yarn feeding direction.
- a spinning unit includes the air spinning device according to any one of the above aspects; an air storage chamber that stores therein air to be supplied to the spinning chamber via the air hole; and a winding device that winds a spun yarn produced by spinning the spun yarn from a fiber bundle by supplying the air from the air storage chamber, and forms a package.
- Embodiments of the invention provide for an air spinning device suitable for fiber bundles of different fiber characteristics for producing spun yarns.
- the spinning unit 1 is a spinning apparatus that produces a spun yarn Y from a fiber bundle (hereinafter, "sliver") F and produces a package P.
- the spinning unit 1 includes a sliver supplying unit 4, a drafting device 5, an air spinning device 6, a yarn-defect detecting device 7, a tension stabilizer 8, and a winding device 9 that are arranged in this order along a feed direction of the sliver F and the spun yarn Y.
- the sliver supplying unit 4 supplies the sliver F, from which the spun yarn Y is to be produced, to the drafting device 5.
- the sliver supplying unit 4 includes a sliver casing 41 and a sliver guide 42 (see FIG. 2 ).
- the sliver F stored in the sliver casing 41 is supplied to the drafting device 5 through the sliver guide 42.
- the drafting device 5 makes the thickness of the sliver F uniform by drafting the sliver F.
- the drafting device 5 includes four pairs of draft rollers, or, more specifically, a pair of back rollers 51, a pair of third rollers 52, a pair of middle rollers 53, and a pair of front rollers 54 arranged in this order along the feed direction of the sliver F. Note that arrows shown in FIG. 2 indicate the feed direction of the sliver F.
- the draft rollers 51 include a bottom roller 51A and a top roller 51B
- the draft rollers 52 include a bottom roller 52A and a top roller 52B
- the draft rollers 53 include a bottom roller 53A and a top roller 53B
- the draft rollers 53 include a bottom roller 54A and a top roller 54B.
- An apron band 53C is arranged around the bottom roller 53A and another apron band 53C is arranged around the top roller 53B of the pair of middle rollers 53.
- the apron bands 53C are made of material such as leather or synthetic rubber.
- the bottom rollers 51A, 52A, 53A, and 54A are rotated in the same direction by a driving device (not shown).
- the top rollers 51B, 52B, 53B, and 54B are rotated in the same direction by rotations of the bottom rollers 51A, 52A, 53A, and 54A.
- the pairs of draft rollers 51, 52, 53, and 54 are configured to be in order of an increasing rotation speed along the feed direction of the sliver F.
- a feeding speed of the sliver F pinched between the pairs of draft rollers 51, 52, 53, and 54 increases each time the sliver F passes between one of the pairs of draft rollers 51, 52, 53, and 54, to thus be drafted between adjacent pairs of the draft rollers.
- the drafting device 5 can make the thickness of the sliver F uniform by drafting the sliver F in this way.
- the air spinning device 6 twists the drafted sliver F, thereby producing the spun yarn Y.
- the air spinning device 6 includes a fiber guide 61, a spindle 62, and a nozzle block 63.
- Solid arrows shown in FIG. 3 indicate the feed direction of the sliver F and the spun yarn Y.
- Hollow arrows shown in FIG. 3 indicate an airflow direction of supplied air.
- the air spinning device 6 shown in FIG. 3 represents a conventional air spinning device, and not air spinning devices 6A and 6B according to embodiments of the present invention.
- the fiber guide 61 is a member that partially defines a spinning chamber SC.
- the sliver F drafted by the drafting device 5 passes through the fiber guide 61 to the spinning chamber SC. More specifically, the sliver F passes through a fiber introducing passage 61g, which communicates with the spinning chamber SC, of the fiber guide 61 to the spinning chamber SC.
- a needle 61n serving as a guide of the sliver F by causing the sliver F to run therealong is provided in the fiber guide 61 in a manner to project into the spinning chamber SC.
- the spindle 62 is a member that partially defines the spinning chamber SC.
- the spun yarn Y twisted in the spinning chamber SC is fed through a fiber passageway 62s, which communicates with the spinning chamber SC, of the spindle 62 to a downstream side in the yarn feed direction of the air spinning device 6.
- the nozzle block 63 is a member that partially defines the spinning chamber SC.
- a plurality of air holes 63a communicating with the spinning chamber SC is defined in the nozzle block 63.
- Air delivered by application of pressure from an air pressure conveying device (not shown) is supplied to the spinning chamber SC through the air holes 63a.
- the air holes 63a defined in the nozzle block 63 communicate with the spinning chamber SC such that air jetted through the air holes 63a flows in the same direction around a central axis of the spinning chamber SC.
- the air spinning device 6 is capable of generating a swirling airflow inside the spinning chamber SC (see the hollow arrows shown in FIG. 3 ) .
- the spinning chamber SC is described in more detail below.
- the spinning chamber SC is a space surrounded by the fiber guide 61, the spindle 62, and the nozzle block 63. More specifically, the spinning chamber SC is a space surrounded by the substantially conical spindle 62 that is inserted from one side relative to a substantially conical through hole 63p in the nozzle block 63 and the fiber guide 61 attached onto the other side of the nozzle block 63.
- the shape of the through hole 63p is not limited to such a substantially conical shape as illustrated in FIG. 3 , and can be a substantially columnar shape or the like.
- the shape of the through hole 63p is not limited to a specific shape and can be of any shape so long as a swirling airflow is favorably generated in the spinning chamber SC.
- the spinning chamber SC is divided into a space SC1 provided between the fiber guide 61 and the spindle 62 and a space SC2 provided between the spindle 62 and the nozzle block 63.
- space SC1 trailing-end portions of fibers that form the sliver F are turned over (see long dashed double-short dashed lines in FIG. 3 ) by the swirling airflow.
- space SC2 the turned-over trailing-end portions of the fibers of the sliver F are made to swing (see long dashed double-short dashed lines in FIG. 3 ) by the swirling airflow.
- the trailing-end portions of the fibers of the sliver F that runs through the fiber passageway 62s along the needle 61n are turned over and swung. Accordingly, the fibers turned over and swinging are wound around central fibers one after another.
- the air spinning device 6 is capable of twisting the sliver F by utilizing a swirling airflow in this way, thereby producing the spun yarn Y.
- the yarn-defect detecting device 7 detects a defect in the spun yarn Y.
- the yarn-defect detecting device 7 includes a light source 71, a light-receiver 72, and a casing 73. Arrows shown in FIG. 4 indicate the direction of light emitted from the light source 71.
- the light source 71 is a semiconductor device, or, put another way, a light-emitting diode, that emits light in response to application of forward voltage thereto.
- the light source 71 is arranged so as to illuminate the spun yarn Y with the light emitted from the light source 71.
- the light-receiver 72 is a semiconductor device, or, put another way, a phototransistor, that can control electric current with optical signals.
- the light-receiver 72 is arranged so as to receive the light emitted from the light source 71.
- the casing 73 is a member that holds the light source 71 and the light-receiver 72 at predetermined positions.
- a yarn passage 73a, through which the spun yarn Y passes, is defined in the casing 73.
- the casing 73 holds the light source 71 and the light-receiver 72 such that the light source 71 and the light-receiver 72 face each other with the spun yarn Y therebetween.
- an amount of light received by the light-receiver 72 can be calculated by subtracting light shielded by the spun yarn Y from the light emitted from the light source 71 to illuminate the spun yarn Y.
- the yarn-defect detecting device 7 is capable of measuring the amount of received light according to yarn thickness and therefore can detect a defect in the spun yarn Y.
- Defects that can be detected by the yarn-defect detecting device 7 include anomalies, for example, that a portion of the spun yarn Y is too thick or too thin, and a foreign matter, such as a polypropylene foreign matter, interposed into the spun yarn Y.
- the yarn-defect detecting device 7 can adopt an electrical capacitance sensor in lieu of the optical sensor described above.
- the tension stabilizer 8 maintains proper tension on the spun yarn Y and stabilizes the tension. As shown in FIG. 5 , the tension stabilizer 8 includes a roller 81, a power output section 82, and an unwinding member 83. Note that arrows shown in FIG. 6 indicate the feed direction of the spun yarn Y.
- the roller 81 is a substantially cylindrical rotary member used in pulling out the spun yarn Y from the air spinning device 6 and winding the spun yarn Y around itself.
- the roller 81 is arranged on a rotary shaft 82a of the power output section 82 and rotated by the power output section 82.
- the spun yarn Y pulled out from the air spinning device 6 is wound around an outer peripheral surface of the roller 81.
- the power output section 82 As the power output section 82, an electric motor that is driven on electric power supplied thereto is used.
- the power output section 82 rotates the roller 81 while maintaining the rotation speed of the roller 81 at a predetermined value. This makes it possible to wind the spun yarn Y around the roller 81 at a constant winding speed.
- the unwinding member 83 is a threading member that rotates in combination with or separately from the roller 81 to thereby assist unwinding of the spun yarn Y.
- the unwinding member 83 is provided on its one end to a rotary shaft 84 of the roller 81.
- a portion on the other end of the unwinding member 83 is curved toward the outer peripheral surface of the roller 81.
- a permanent magnet that exerts a resisting force against rotation of the unwinding member 83 is provided at a basal portion of the rotary shaft 84, to which the unwinding member 83 is attached.
- the unwinding member 83 configured in this way rotates in combination with the roller 81 when a tension placed on the spun yarn Y is relatively weak and overcome by the resisting force. In contrast, the unwinding member 83 rotates separately from the roller 81 when the tension placed on the spun yarn Y is relatively strong to overcome the resisting force.
- the tension stabilizer 8 can thus cause the unwinding member 83 to rotate in combination with or separately from the roller 81 depending on the tension placed on the spun yarn Y, thereby adjusting an unwinding speed of the spun yarn Y.
- the tension stabilizer 8 maintains a proper tension on the spun yarn Y and stabilizes the tension in this way.
- the tension stabilizer 8 can wind the spun yarn Y around the outer peripheral surface of the roller 81 to store the spun yarn Y.
- the tension stabilizer 8 can therefore take up a slack in the spun yarn Y.
- the winding device 9 winds the spun yarn Y to thereby form a substantially cylindrical (cheese-shaped) package P.
- the winding device 9 includes a driving roller 91 and a cradle (not shown).
- the cradle rotatably supports a bobbin 92.
- the driving roller 91 is a rotary member that rotates to cause the bobbin 92 and the package P to be rotated by rotation of the driving roller 91.
- the driving roller 91 adjusts its rotation speed according to change in the outer diameter of the package P, thereby maintaining the circumferential velocity of the package P constant. This makes it possible to wind the spun yarn Y on the bobbin 92 at a constant winding speed.
- the bobbin 92 is a substantially cylindrical rotary member around which the spun yarn Y is wound.
- the bobbin 92 is rotated by the rotation of the driving roller 91 that rotates in contact with the outer peripheral surface of any one of the bobbin 92 and the package P.
- a traversing device (not shown) causes the spun yarn Y to be traversed to prevent unbalanced winding of the spun yarn Y on the package P.
- the spun yarn Y introduced to the bobbin 92 is wound, without being unbalanced, on the outer peripheral surface of the bobbin 92.
- the winding device 9 can form the substantially cylindrical (cheese-shaped) package P in this way.
- the package P to be formed by the winding device 9 is not limited to the substantially cylindrical (cheese-shaped) package P shown in FIG. 1 .
- the winding device 9 can also form the package P having a substantially conical shape.
- the air spinning device 6 produces the spun yarn Y by twisting the sliver F by utilizing the swirling airflow. More specifically, in the space SC1 of the spinning chamber SC, the trailing-end portions of the fibers that form the sliver F are turned over (see the long dashed double-short dashed line in FIG. 3 ) by the swirling airflow. In the space S2 of the spinning chamber SC, the trailing-end portions of the fibers that form the sliver F are swung (see the long dashed double-short dashed line in FIG. 3 ) by the swirling airflow.
- the fibers to be spun are relatively stiff polyester fibers having a relatively long fiber length
- a capacity of the spinning chamber SC is small in relation to the fiber length of the polyester fibers
- the trailing-end portions of the polyester fibers are hard to be turned over.
- the spun yarn Y that is loosely twisted is produced. More specifically, if the capacity of the spinning chamber SC is small, that is, if a height h of the space SC1 is less than a predetermined value, it is hard for the trailing-end portions of the polyester fibers to be turned over and be moved by and along the swirling airflow. Accordingly, the number of the polyester fibers that are swung in the space SC2 is reduced. The polyester fibers that are insufficiently swung are introduced into the fiber passageway 62s. As a result, a loosely twisted spun yarn (loose yarn) Y is produced.
- the capacity of the spinning chamber SC is large in relation to the fiber length of the polyester fibers, the trailing-end portions of the polyester fibers are sufficiently turned over. As a result, the spun yarn Y that is firmly twisted is produced. More specifically, if the capacity of the spinning chamber SC is large, that is, if the height h of the space SC1 is greater than a predetermined value, the trailing-end portions of the polyester fibers are easily moved by and along the swirling airflow, and turned over. Accordingly, the polyester fibers in a state where the trailing-end portions of the polyester fibers are sufficiently wound around central fibers are introduced into the fiber passageway 62s. As a result, a firmly twisted spun yarn (firm yarn) Y is produced.
- both ends of the polyester fibers are swung in the spinning chamber SC without being restricted by either of the fiber guide 61 and the spindle 62. Accordingly, the ends of the polyester fibers escape to the outside of the air spinning device 6 more frequently. As a result, fiber loss increases, which is disadvantageous. Even if no fiber loss occurs, the fibers are loosely wound around the central fibers. As a result, a loosely twisted spun yarn Y is produced. Furthermore, the higher the capacity of the spinning chamber SC is, the more the amount of air that needs to be used in producing the swirling airflow in the spinning chamber SC becomes. Accordingly, the need for increasing the size of the air pressure conveying device arises. This requires upsizing of the spinning unit 1, which is also disadvantageous.
- the fibers to be spun are relatively supple cotton fibers having a relatively short fiber length
- the capacity of the spinning chamber SC is small in relation to the fiber length of the cotton fibers
- the trailing-end portions of the cotton fibers are hard to be turned over.
- the spun yarn Y that is loosely twisted is produced.
- the capacity of the spinning chamber SC is small, that is, if the height h of the space SC1 is less than a predetermined value, it is hard for the trailing-end portions of the cotton fibers to be turned over and be moved by and along the swirling airflow. Accordingly, the number of the cotton fibers that are swung in the space SC2 is reduced.
- the cotton fibers that are insufficiently swung are introduced into the fiber passageway 62s.
- a loosely twisted spun yarn (loose yarn) Y is produced.
- the capacity of the spinning chamber SC is large in relation to the fiber length of the cotton fibers, the trailing-end portions of the cotton fibers are sufficiently turned over. As a result, the spun yarn Y that is firmly twisted is produced. More specifically, if the capacity of the spinning chamber SC is large, that is, if the height h of the space SC1 is greater than a predetermined value, the trailing-end portions of the cotton fibers are easily moved by and along the swirling airflow, and turned over. Accordingly, the cotton fibers in a state where the trailing-end portions of the cotton fibers are sufficiently wound around the central fibers are introduced into the fiber passageway 62s. As a result, a firmly twisted spun yarn (firm yarn) Y is produced.
- both the ends of the cotton fibers are swung in the spinning chamber SC without being restricted by either of the fiber guide 61 and the spindle 62. Accordingly, the ends of the cotton fibers are discharged to the outside of the air spinning device 6 more frequently. As a result, fiber loss increases, which is disadvantageous. Even if no fiber loss occurs, the fibers are loosely wound around the central fibers. As a result, a loosely twisted spun yarn Y is produced. Furthermore, the higher the capacity of the spinning chamber SC is, the more the amount of air that needs to be used in producing the swirling airflow in the spinning chamber SC also becomes. Accordingly, the need for increasing the size of the air pressure conveying device arises. This requires upsizing of the spinning unit 1, which is also disadvantageous.
- the spun yarn Y produced by the air spinning device 6 is influenced by fiber characteristics because the air spinning device 6 causes the fibers to swing by utilizing the swirling airflow. That is, the air spinning device 6 is disadvantageous in that a twisting firmness of the produced spun yarn Y varies according to the fiber characteristics, such as a fiber length and fiber stiffness.
- the air spinning device 6A according to a first embodiment of the present invention that provides a solution to the problem described above is explained next.
- the air spinning device 6A produces the spun yarn Y by twisting a drafted sliver F.
- the air spinning device 6A mainly includes the fiber guide 61, the spindle 62, and the nozzle block 63.
- Solid arrows shown in FIG. 6 indicate the feed direction of the sliver F and the spun yarn Y.
- Hollow arrows shown in FIG. 6 indicate an airflow direction of supplied air.
- the air spinning device 6A has a configuration that is substantially similar to that of the conventional air spinning device 6 (see FIG. 3 ). However, the air spinning device 6A differs from the air spinning device 6 in that the fiber guide 61 has a projection 61b that engages into the through hole 63p of the nozzle block 63.
- the air spinning device 6A produces the spun yarn Y by twisting the sliver F by utilizing the swirling airflow.
- the trailing-end portions of the fibers that form the sliver F are turned over (see long dashed double-short dashed lines in FIG. 6 ) by the swirling airflow.
- the trailing-end portions of the fibers that form the sliver F are swung (see the long dashed double-short dashed lines in FIG. 6 ) by the swirling airflow.
- the fibers to be spun are relatively stiff polyester fibers having a relatively long fiber length
- the height h of the space SC1 is less than the predetermined value
- the trailing-end portions of the polyester fibers are introduced into the fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn).
- the height h of the space SC1 can be adjusted to an optimum value by replacing the fiber guide 61 with another fiber guide 61 having the projection 61b of shorter length L.
- the polyester fibers in a state where some of the polyester fibers are loosely wound around the central fibers are introduced into the fiber passageway 62s.
- the spun yarn Y that is loosely twisted (loose yarn) is produced.
- the height h of the space SC1 can be adjusted to the optimum value by replacing the fiber guide 61 with another fiber guide 61 having the projection 61b of longer length L.
- the fibers to be spun are relatively supple cotton fibers having a relatively short fiber length
- the height h of the space SC1 is less than the predetermined value
- the trailing-end portions of the cotton fibers are introduced into the fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn).
- the height h of the space SC1 can be adjusted to an optimum value by replacing the fiber guide 61 with another fiber guide 61 having the projection 61b of shorter length L.
- the height h of the space SC1 can be adjusted to the optimum value by replacing the fiber guide 61 with another fiber guide 61 having the projection 61b of longer length L.
- the air spinning device 6A By configuring in this way, in the air spinning device 6A according to the present embodiment, the height h of the space SC1 can be easily changed by merely replacing the fiber guide 61. That is, in the air spinning device 6A, by merely replacing the fiber guide 61, the capacity of the spinning chamber SC can be easily adjusted according to the fiber characteristics. Thus, the air spinning device 6A is capable of performing spinning according to the fiber characteristics.
- the air spinning device 6A is configured without the needle 61n in the fiber guide 61 as shown in FIG. 7 , the same object and effects according to the present invention can be achieved.
- the scope of the present invention also encompasses such a modification.
- the sliver F is caught at a downstream end portion of the fiber guide 61 and introduced into the fiber passageway 62s of the spindle 62.
- the air spinning device 6B according to a second embodiment of the present invention that provides a solution to the problem described above is explained next.
- the air spinning device 6B produces the spun yarn Y by twisting the drafted sliver F.
- the air spinning device 6B mainly includes the fiber guide 61, the spindle 62, and the nozzle block 63.
- Solid arrows shown in FIG. 8 indicate the feed direction of the sliver F and the spun yarn Y.
- Hollow arrows shown in FIG. 8 indicate an airflow direction of supplied air.
- the air spinning device 6B has a configuration that is substantially similar to that of the conventional air spinning device 6 (see FIG. 3 ). However, the air spinning device 6B differs from the air spinning device 6 in that the fiber guide 61 has a recess 61c that communicates with the through hole 63p of the nozzle block 63.
- the air spinning device 6B produces the spun yarn Y by twisting the sliver F by utilizing the swirling airflow.
- the trailing-end portions of the fibers that form the sliver F are turned over (see long dashed double-short dashed lines in FIG. 8 ) in the space SC1 of the spinning chamber SC by the swirling airflow.
- the trailing-end portions of the fibers that form the sliver F are swung (see the long dashed double-short dashed lines in FIG. 8 ) in the space SC2 of the spinning chamber SC by the swirling airflow.
- the fibers to be spun are relatively stiff polyester fibers having a relatively long fiber length
- the height h of the space SC1 is less than the predetermined value
- the trailing-end portions of the polyester fibers are introduced into the fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn).
- the height h of the space SC1 can be adjusted to an optimum value by replacing the fiber guide 61 with another fiber guide 61 having the recess 61c of deeper depth D.
- the polyester fibers in a state where some of the polyester fibers are loosely wound around the central fibers are introduced into the fiber passageway 62s.
- the spun yarn Y that is loosely twisted (loose yarn) is produced.
- the height h of the space SC1 can be adjusted to the optimum value by replacing the fiber guide 61 with another fiber guide 61 having the recess 61c of shallower depth D.
- the fibers to be spun are relatively supple cotton fibers having a relatively short fiber length
- the height h of the space SC1 is less than the predetermined value
- the trailing-end portions of the cotton fibers are introduced into the fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn).
- the height h of the space SC1 can be adjusted to an optimum value by replacing the fiber guide 61 with another fiber guide 61 having the recess 61c of deeper depth D.
- the height h of the space SC1 can be adjusted to the optimum value by replacing the fiber guide 61 with another fiber guide 61 having the recess 61c of deeper depth D.
- the air spinning device 6B By configuring in this way, in the air spinning device 6B according to the present embodiment, the height h of the space SC1 can be easily changed by merely replacing the fiber guide 61. That is, in the air spinning device 6B, by merely replacing the fiber guide 61, the capacity of the spinning chamber SC can be easily adjusted according to the fiber characteristics. Thus, the air spinning device 6B is capable of performing spinning according to the fiber characteristics.
- the air spinning device 6B is configured without the needle 61n in the fiber guide 61 as shown in FIG. 9 , the same object and effects according to the present invention are achieved.
- the scope of the present invention also encompasses such a modification.
- the sliver F is caught at a downstream end portion of the fiber guide 61 and introduced into the fiber passageway 62s of the spindle 62.
- FIG. 10 is an enlarged view of a region of the spinning chamber SC. Hollow arrows shown in FIG. 10 indicate the airflow direction of the supplied air.
- Each of the air holes 63a of the nozzle block 63 runs obliquely connecting an upper part (upstream portion) of an air storage chamber AC to a bottom (downstream portion) of the space SC1 of the spinning chamber SC.
- the air stored in the air storage chamber AC is supplied to the spinning chamber SC through each of the air holes 63a.
- a point of intersection IS1 between a central axis of the air hole 63a and a wall surface of the through hole 63p is located in a range of greater than or equal to 3 mm to less than or equal to 10 mm from a contact surface X between the nozzle block 63 and the fiber guide 61.
- the air holes 63a will produce a swirling airflow in the spinning chamber SC. If the measurement from the point of intersection IS1 to the contact surface X is less than 3 mm, the air holes 63a will be perpendicular to or substantially perpendicular to the spinning chamber SC. In this case, because no swirling airflow is produced in the spinning chamber SC, the fibers cannot be turned over or swung. If the measurement from the point of intersection IS1 to the contact surface X exceeds 10 mm, the capacity of the spinning chamber SC is increased, resulting in an upsized air spinning device 6 and increased consumption of air.
- the fibers cannot be swung at a high speed, leading to loosely twisted spun yarn Y. Therefore, it is essential that the point of intersection IS1 between the central axis of the air hole 63a and the wall surface of the through hole 63p be located in the range of greater than or equal to 3 mm to less than or equal to 10 mm from the contact surface X between the nozzle block 63 and the fiber guide 61.
- the produced spun yarn Y will not be influenced by the fiber characteristics even if the spun yarn Y is produced from slivers F of different fiber characteristics, and the twisting firmness of the produced spun yarns Y can be stabilized. Furthermore, by replacing the fiber guide 61 according to the fiber characteristics, a quality of the spun yarn Y can be easily optimized. That is, by ensuring that the measurement from the intersection point IS1 to the contact surface X is between greater than or equal to 3 mm and less than or equal to 10 mm, the length L of the projection 61b of the fiber guide 61 can be easily changed. Thus, the air spinning devices 6A and 6B are capable of performing spinning according to the fiber characteristics.
- a point of intersection IS2 between the central axis of the air hole 63a and an external wall surface of the nozzle block 63 is located at a position that is away from the contact surface X between the nozzle block 63 and the fiber guide 61 by greater than or equal to 1 mm.
- the value of greater than or equal to 1 mm has been determined based on a result of tests carried out using stability of the twisting firmness of the produced spun yarn Y as a parameter. More specifically, the value of greater than or equal to 1 mm enables the air to be evenly supplied from the air storage chamber AC to the spinning chamber SC via the air holes 63a, and causes a stabilized swirling airflow to be produced.
- the reason why a stabilized swirling airflow is produced if an inlet part of the air hole 63a is located at a position that is away from the vicinity of the upper (upstream end) wall surface of the air storage chamber AC is because there is no blockage of the air flowing into each of the air holes 63a.
- the air hole 63a is provided at a position that is located away by greater than or equal to 1 mm from the contact surface X between the nozzle block 63 and the fiber guide 61 inevitably leads to an increase in a height H of a neck part of the nozzle block 63. Consequently, there is an increase in the capacity of the air storage chamber AC and a good flow of air into each of the air holes 63a.
- the air spinning devices 6A and 6B are capable of performing spinning according to the fiber characteristics.
- the position of the air hole 63a at a position that is located away from the contact surface X between the nozzle block 63 and the fiber guide 61 makes it hard for any contaminant adhering to the contact surface X to enter the air hole 63a.
- chippings from an O ring 61o that is mounted on an outer periphery of the fiber guide 61 will not easily get into the air hole 63a. Consequently, contaminants are prevented from mixing with the produced spun yarn Y.
- the contaminated portion of the spun yarn Y needs to be removed by the spinning unit 1. This would necessitate stopping the winding operation of the spun yarn Y performed by the winding device 9 for cutting and splicing the spun yarn Y, leading to a reduction in a production efficiency of the spun yarn Y.
- the air spinning device 6 mixing of the contaminant with the spun yarn Y is prevented and therefore no reduction in the production efficiency of the spun yarn Y occurs.
- the spinning unit 1 that includes the air spinning device 6A or 6B is capable of performing spinning according to the fiber characteristics. Consequently, the production efficiency of the spun yarn Y can be improved.
- the spun yarn Y spun by the air spinning device 6A or 6B is drawn out and temporarily stored by the tension stabilizer 8.
- the configuration of the spinning unit 1 is not limited to such a configuration.
- a configuration is allowable in which a delivery roller and a nip roller are arranged downstream of the air spinning device 6A or 6B, and the delivery roller and the nip roller draw out the spun yarn Y from the air spinning device 6A or 6B.
- a configuration is allowable in which the tension stabilizer 8 is arranged downstream relative to the delivery roller and the nip roller, and the spun yarn Y drawn out from the air spinning device 6A or 6B by the delivery roller and the nip roller is temporarily stored by the tension stabilizer 8.
- a configuration in which the tension stabilizer 8 is omitted and the winding device 9 directly winds the spun yarn Y can be employed.
- the present invention yields the following effects.
- the produced spun yarn Y is not influenced by fiber characteristics even if a spun yarn is produced from fiber bundles having different fiber characteristics, and a twisting firmness of the produced spun yarn is stabilized.
- the twisting firmness of the produced spun yarn is stabilized.
- spinning according to the fiber characteristics is easily performed.
- the air hole is defined at a position that is located away from a contact surface of a nozzle block and the fiber guide, any contaminants adhering to the contact surface do not easily enter the air hole, and as a result, mixing of the contaminants with the produced spun yarn is prevented.
- a spinning unit spinning according to the fiber characteristics is easily performed by the air spinning device and the spun yarn can be wound on a package by a winding device.
- a production efficiency of the package is improved.
- an air spinning device spins a spun yarn from a fiber bundle.
- the air spinning device includes a nozzle block that includes a through hole that partially defines a spinning chamber and an air hole that communicates with the spinning chamber; a fiber guide in which a fiber introducing passage that is communicable with the spinning chamber is defined; and a spindle in which a fiber passageway that is communicable with the spinning chamber is defined.
- the air hole is located such that a point of intersection of a central axis of the air hole and a wall surface of the through hole is in a range of greater than or equal to 3 millimeter (mm) to less than or equal to 10 mm from a contact surface between the nozzle block and the fiber guide.
- the air hole is located such that the point of intersection of the central axis of the air hole and an outer wall surface of the nozzle block is located away by greater than or equal to 1 mm from the contact surface between the nozzle block and the fiber guide.
- a spinning unit includes the air spinning device according to any of the above aspects of the present invention.
- the spinning unit includes an air storage chamber and a winding device.
- the air storage chamber stores therein air to be supplied to the spinning chamber via the air hole.
- the winding device winds the spun yarn produced by spinning using the air spinning device, and forms a package.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
- The present invention generally relates to an air spinning device, and in particular relates to an air spinning device capable of easily performing spinning of a yarn according to fiber characteristics. Furthermore, the present invention relates to a spinning unit that includes the air spinning device.
- Air spinning devices that produce a spun yarn by twisting a fiber bundle by utilizing a swirling airflow are known in the art. Such an air spinning device supplies air into a spinning chamber to generate a swirling airflow that causes fibers, which form a fiber bundle, to swing, thereby producing a spun yarn (see, for example, Japanese published unexamined applications
2003-193337 H6-41822 -
EP 1 584 715 A1 - It is an object of the present invention to provide an air spinning device suitable for fiber bundles of different fiber characteristics for producing spun yarns to enable easy spinning according to the fiber characteristics. It is a further object of the present invention to provide a spinning unit, which includes the air spinning device. According to one aspect of the present invention, an air spinning device that spins a spun yarn from a fiber bundle by supplying air from an air hole into a spinning chamber includes a nozzle block that includes a through hole that partially defines the spinning chamber, and the air hole that is communicable with the spinning chamber; a fiber guide in which a fiber introducing passage that is communicable with the spinning chamber is defined; and a spindle in which a fiber passageway that is communicable with the spinning chamber is defined. The air hole is positioned such that a point of intersection of a central axis of the air hole and a wall surface of the through hole falls in a range of greater than or equal to 3 mm to less than or equal to 10 mm from a contact surface at which a downstream end surface of the fiber guide in a yarn feeding direction is received by an upstream end surface of the nozzle block in the yarn feeding direction.
- According to still another aspect of the present invention, a spinning unit includes the air spinning device according to any one of the above aspects; an air storage chamber that stores therein air to be supplied to the spinning chamber via the air hole; and a winding device that winds a spun yarn produced by spinning the spun yarn from a fiber bundle by supplying the air from the air storage chamber, and forms a package.
- Conventional air spinning devices cause fibers to swing by utilizing a swirling airflow, and therefore the produced spun yarn is likely to be influenced by the fiber characteristics. Accordingly, conventional air spinning devices have a problem that a twisting firmness of a produced spun yarn varies depending on the fiber characteristics, such as a fiber length and fiber stiffness. Embodiments of the invention provide for an air spinning device suitable for fiber bundles of different fiber characteristics for producing spun yarns.
- The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings.
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FIG. 1 is a schematic diagram of an overall configuration of a spinning unit according to an embodiment of the present invention; -
FIG. 2 is a schematic diagram of a drafting device of the spinning unit shown inFIG. 1 ; -
FIG. 3 is a schematic diagram of a conventional air spinning device of the spinning unit shown inFIG. 1 ; -
FIG. 4 is a schematic diagram of a yarn-defect detecting device of the spinning unit shown inFIG. 1 ; -
FIG. 5 is a schematic diagram of a tension stabilizer of the spinning unit shown inFIG. 1 ; -
FIG. 6 is a schematic diagram of an air spinning device according to a first embodiment of the present invention; -
FIG. 7 is a schematic diagram of the air spinning device shown inFIG. 6 that does not include a needle; -
FIG. 8 is a schematic diagram of an air spinning device according to a second embodiment of the present invention; -
FIG. 9 is a schematic diagram of the air spinning device shown inFIG. 8 that does not include the needle; and -
FIG. 10 is a schematic diagram showing positions of air holes in a nozzle block. - Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings.
- An overall configuration of a
spinning unit 1 according to an embodiment of the present invention is described below with reference toFIG. 1 . Thespinning unit 1 is a spinning apparatus that produces a spun yarn Y from a fiber bundle (hereinafter, "sliver") F and produces a package P. Thespinning unit 1 includes a sliver supplying unit 4, adrafting device 5, anair spinning device 6, a yarn-defect detecting device 7, a tension stabilizer 8, and awinding device 9 that are arranged in this order along a feed direction of the sliver F and the spun yarn Y. - The sliver supplying unit 4 supplies the sliver F, from which the spun yarn Y is to be produced, to the
drafting device 5. The sliver supplying unit 4 includes asliver casing 41 and a sliver guide 42 (seeFIG. 2 ). The sliver F stored in thesliver casing 41 is supplied to thedrafting device 5 through thesliver guide 42. - The
drafting device 5 makes the thickness of the sliver F uniform by drafting the sliver F. As shown inFIG. 2 , thedrafting device 5 includes four pairs of draft rollers, or, more specifically, a pair ofback rollers 51, a pair ofthird rollers 52, a pair ofmiddle rollers 53, and a pair offront rollers 54 arranged in this order along the feed direction of the sliver F. Note that arrows shown inFIG. 2 indicate the feed direction of the sliver F. - Of the four pairs of draft rollers, the
draft rollers 51 include abottom roller 51A and atop roller 51B, thedraft rollers 52 include abottom roller 52A and atop roller 52B, thedraft rollers 53 include abottom roller 53A and atop roller 53B, and thedraft rollers 53 include abottom roller 54A and atop roller 54B. Anapron band 53C is arranged around thebottom roller 53A and anotherapron band 53C is arranged around thetop roller 53B of the pair ofmiddle rollers 53. Theapron bands 53C are made of material such as leather or synthetic rubber. - The
bottom rollers top rollers bottom rollers draft rollers - In the
drafting device 5 configured in this way, a feeding speed of the sliver F pinched between the pairs ofdraft rollers draft rollers drafting device 5 can make the thickness of the sliver F uniform by drafting the sliver F in this way. - The
air spinning device 6 twists the drafted sliver F, thereby producing the spun yarn Y. As shown inFIG. 3 , theair spinning device 6 includes afiber guide 61, aspindle 62, and anozzle block 63. Solid arrows shown inFIG. 3 indicate the feed direction of the sliver F and the spun yarn Y. Hollow arrows shown inFIG. 3 indicate an airflow direction of supplied air. Theair spinning device 6 shown inFIG. 3 represents a conventional air spinning device, and notair spinning devices - The
fiber guide 61 is a member that partially defines a spinning chamber SC. The sliver F drafted by thedrafting device 5 passes through thefiber guide 61 to the spinning chamber SC. More specifically, the sliver F passes through afiber introducing passage 61g, which communicates with the spinning chamber SC, of thefiber guide 61 to the spinning chamber SC. Aneedle 61n serving as a guide of the sliver F by causing the sliver F to run therealong is provided in thefiber guide 61 in a manner to project into the spinning chamber SC. - The
spindle 62 is a member that partially defines the spinning chamber SC. The spun yarn Y twisted in the spinning chamber SC is fed through afiber passageway 62s, which communicates with the spinning chamber SC, of thespindle 62 to a downstream side in the yarn feed direction of theair spinning device 6. - The
nozzle block 63 is a member that partially defines the spinning chamber SC. A plurality ofair holes 63a communicating with the spinning chamber SC is defined in thenozzle block 63. Air delivered by application of pressure from an air pressure conveying device (not shown) is supplied to the spinning chamber SC through theair holes 63a. Theair holes 63a defined in thenozzle block 63 communicate with the spinning chamber SC such that air jetted through theair holes 63a flows in the same direction around a central axis of the spinning chamber SC. Thus, theair spinning device 6 is capable of generating a swirling airflow inside the spinning chamber SC (see the hollow arrows shown inFIG. 3 ) . - The spinning chamber SC is described in more detail below. The spinning chamber SC is a space surrounded by the
fiber guide 61, thespindle 62, and thenozzle block 63. More specifically, the spinning chamber SC is a space surrounded by the substantiallyconical spindle 62 that is inserted from one side relative to a substantially conical throughhole 63p in thenozzle block 63 and thefiber guide 61 attached onto the other side of thenozzle block 63. The shape of the throughhole 63p is not limited to such a substantially conical shape as illustrated inFIG. 3 , and can be a substantially columnar shape or the like. The shape of the throughhole 63p is not limited to a specific shape and can be of any shape so long as a swirling airflow is favorably generated in the spinning chamber SC. - The spinning chamber SC is divided into a space SC1 provided between the
fiber guide 61 and thespindle 62 and a space SC2 provided between thespindle 62 and thenozzle block 63. In the space SC1, trailing-end portions of fibers that form the sliver F are turned over (see long dashed double-short dashed lines inFIG. 3 ) by the swirling airflow. In the space SC2, the turned-over trailing-end portions of the fibers of the sliver F are made to swing (see long dashed double-short dashed lines inFIG. 3 ) by the swirling airflow. - In the spinning chamber SC configured in this way, the trailing-end portions of the fibers of the sliver F that runs through the
fiber passageway 62s along theneedle 61n are turned over and swung. Accordingly, the fibers turned over and swinging are wound around central fibers one after another. Theair spinning device 6 is capable of twisting the sliver F by utilizing a swirling airflow in this way, thereby producing the spun yarn Y. - The yarn-
defect detecting device 7 detects a defect in the spun yarn Y. As shown inFIG. 4 , the yarn-defect detecting device 7 includes alight source 71, a light-receiver 72, and acasing 73. Arrows shown inFIG. 4 indicate the direction of light emitted from thelight source 71. - The
light source 71 is a semiconductor device, or, put another way, a light-emitting diode, that emits light in response to application of forward voltage thereto. Thelight source 71 is arranged so as to illuminate the spun yarn Y with the light emitted from thelight source 71. - The light-
receiver 72 is a semiconductor device, or, put another way, a phototransistor, that can control electric current with optical signals. The light-receiver 72 is arranged so as to receive the light emitted from thelight source 71. - The
casing 73 is a member that holds thelight source 71 and the light-receiver 72 at predetermined positions. Ayarn passage 73a, through which the spun yarn Y passes, is defined in thecasing 73. Thecasing 73 holds thelight source 71 and the light-receiver 72 such that thelight source 71 and the light-receiver 72 face each other with the spun yarn Y therebetween. - In the yarn-
defect detecting device 7 configured in this way, an amount of light received by the light-receiver 72 can be calculated by subtracting light shielded by the spun yarn Y from the light emitted from thelight source 71 to illuminate the spun yarn Y. The yarn-defect detecting device 7 is capable of measuring the amount of received light according to yarn thickness and therefore can detect a defect in the spun yarn Y. - Defects that can be detected by the yarn-
defect detecting device 7 include anomalies, for example, that a portion of the spun yarn Y is too thick or too thin, and a foreign matter, such as a polypropylene foreign matter, interposed into the spun yarn Y. The yarn-defect detecting device 7 can adopt an electrical capacitance sensor in lieu of the optical sensor described above. - The tension stabilizer 8 maintains proper tension on the spun yarn Y and stabilizes the tension. As shown in
FIG. 5 , the tension stabilizer 8 includes aroller 81, apower output section 82, and an unwindingmember 83. Note that arrows shown inFIG. 6 indicate the feed direction of the spun yarn Y. - The
roller 81 is a substantially cylindrical rotary member used in pulling out the spun yarn Y from theair spinning device 6 and winding the spun yarn Y around itself. Theroller 81 is arranged on arotary shaft 82a of thepower output section 82 and rotated by thepower output section 82. The spun yarn Y pulled out from theair spinning device 6 is wound around an outer peripheral surface of theroller 81. - As the
power output section 82, an electric motor that is driven on electric power supplied thereto is used. Thepower output section 82 rotates theroller 81 while maintaining the rotation speed of theroller 81 at a predetermined value. This makes it possible to wind the spun yarn Y around theroller 81 at a constant winding speed. - The unwinding
member 83 is a threading member that rotates in combination with or separately from theroller 81 to thereby assist unwinding of the spun yarn Y. The unwindingmember 83 is provided on its one end to arotary shaft 84 of theroller 81. A portion on the other end of the unwindingmember 83 is curved toward the outer peripheral surface of theroller 81. By hooking the spun yarn Y on the curved portion, the unwindingmember 83 unwinds the spun yarn Y from theroller 81. A permanent magnet that exerts a resisting force against rotation of the unwindingmember 83 is provided at a basal portion of therotary shaft 84, to which the unwindingmember 83 is attached. - The unwinding
member 83 configured in this way rotates in combination with theroller 81 when a tension placed on the spun yarn Y is relatively weak and overcome by the resisting force. In contrast, the unwindingmember 83 rotates separately from theroller 81 when the tension placed on the spun yarn Y is relatively strong to overcome the resisting force. The tension stabilizer 8 can thus cause the unwindingmember 83 to rotate in combination with or separately from theroller 81 depending on the tension placed on the spun yarn Y, thereby adjusting an unwinding speed of the spun yarn Y. The tension stabilizer 8 maintains a proper tension on the spun yarn Y and stabilizes the tension in this way. - Also when the spun yarn Y that is cut is to be spliced by a splicer (not shown), the tension stabilizer 8 can wind the spun yarn Y around the outer peripheral surface of the
roller 81 to store the spun yarn Y. The tension stabilizer 8 can therefore take up a slack in the spun yarn Y. - The winding
device 9 winds the spun yarn Y to thereby form a substantially cylindrical (cheese-shaped) package P. The windingdevice 9 includes a drivingroller 91 and a cradle (not shown). The cradle rotatably supports abobbin 92. - The driving
roller 91 is a rotary member that rotates to cause thebobbin 92 and the package P to be rotated by rotation of the drivingroller 91. The drivingroller 91 adjusts its rotation speed according to change in the outer diameter of the package P, thereby maintaining the circumferential velocity of the package P constant. This makes it possible to wind the spun yarn Y on thebobbin 92 at a constant winding speed. - The
bobbin 92 is a substantially cylindrical rotary member around which the spun yarn Y is wound. Thebobbin 92 is rotated by the rotation of the drivingroller 91 that rotates in contact with the outer peripheral surface of any one of thebobbin 92 and the package P. In the windingdevice 9, a traversing device (not shown) causes the spun yarn Y to be traversed to prevent unbalanced winding of the spun yarn Y on the package P. - In the winding
device 9 configured in this way, the spun yarn Y introduced to thebobbin 92 is wound, without being unbalanced, on the outer peripheral surface of thebobbin 92. The windingdevice 9 can form the substantially cylindrical (cheese-shaped) package P in this way. The package P to be formed by the windingdevice 9 is not limited to the substantially cylindrical (cheese-shaped) package P shown inFIG. 1 . The windingdevice 9 can also form the package P having a substantially conical shape. - The drawback of the conventional
air spinning device 6 included in thespinning unit 1 is explained below. - As described above, the
air spinning device 6 produces the spun yarn Y by twisting the sliver F by utilizing the swirling airflow. More specifically, in the space SC1 of the spinning chamber SC, the trailing-end portions of the fibers that form the sliver F are turned over (see the long dashed double-short dashed line inFIG. 3 ) by the swirling airflow. In the space S2 of the spinning chamber SC, the trailing-end portions of the fibers that form the sliver F are swung (see the long dashed double-short dashed line inFIG. 3 ) by the swirling airflow. - Assuming that the fibers to be spun are relatively stiff polyester fibers having a relatively long fiber length, if a capacity of the spinning chamber SC is small in relation to the fiber length of the polyester fibers, the trailing-end portions of the polyester fibers are hard to be turned over. As a result, the spun yarn Y that is loosely twisted is produced. More specifically, if the capacity of the spinning chamber SC is small, that is, if a height h of the space SC1 is less than a predetermined value, it is hard for the trailing-end portions of the polyester fibers to be turned over and be moved by and along the swirling airflow. Accordingly, the number of the polyester fibers that are swung in the space SC2 is reduced. The polyester fibers that are insufficiently swung are introduced into the
fiber passageway 62s. As a result, a loosely twisted spun yarn (loose yarn) Y is produced. - In contrast, if the capacity of the spinning chamber SC is large in relation to the fiber length of the polyester fibers, the trailing-end portions of the polyester fibers are sufficiently turned over. As a result, the spun yarn Y that is firmly twisted is produced. More specifically, if the capacity of the spinning chamber SC is large, that is, if the height h of the space SC1 is greater than a predetermined value, the trailing-end portions of the polyester fibers are easily moved by and along the swirling airflow, and turned over. Accordingly, the polyester fibers in a state where the trailing-end portions of the polyester fibers are sufficiently wound around central fibers are introduced into the
fiber passageway 62s. As a result, a firmly twisted spun yarn (firm yarn) Y is produced. - However, if the height h of the space SC1 is far greater than the predetermined value, both ends of the polyester fibers are swung in the spinning chamber SC without being restricted by either of the
fiber guide 61 and thespindle 62. Accordingly, the ends of the polyester fibers escape to the outside of theair spinning device 6 more frequently. As a result, fiber loss increases, which is disadvantageous. Even if no fiber loss occurs, the fibers are loosely wound around the central fibers. As a result, a loosely twisted spun yarn Y is produced. Furthermore, the higher the capacity of the spinning chamber SC is, the more the amount of air that needs to be used in producing the swirling airflow in the spinning chamber SC becomes. Accordingly, the need for increasing the size of the air pressure conveying device arises. This requires upsizing of thespinning unit 1, which is also disadvantageous. - Now, assuming that the fibers to be spun are relatively supple cotton fibers having a relatively short fiber length, if the capacity of the spinning chamber SC is small in relation to the fiber length of the cotton fibers, the trailing-end portions of the cotton fibers are hard to be turned over. As a result, the spun yarn Y that is loosely twisted is produced. More specifically, if the capacity of the spinning chamber SC is small, that is, if the height h of the space SC1 is less than a predetermined value, it is hard for the trailing-end portions of the cotton fibers to be turned over and be moved by and along the swirling airflow. Accordingly, the number of the cotton fibers that are swung in the space SC2 is reduced. The cotton fibers that are insufficiently swung are introduced into the
fiber passageway 62s. As a result, a loosely twisted spun yarn (loose yarn) Y is produced. - In contrast, if the capacity of the spinning chamber SC is large in relation to the fiber length of the cotton fibers, the trailing-end portions of the cotton fibers are sufficiently turned over. As a result, the spun yarn Y that is firmly twisted is produced. More specifically, if the capacity of the spinning chamber SC is large, that is, if the height h of the space SC1 is greater than a predetermined value, the trailing-end portions of the cotton fibers are easily moved by and along the swirling airflow, and turned over. Accordingly, the cotton fibers in a state where the trailing-end portions of the cotton fibers are sufficiently wound around the central fibers are introduced into the
fiber passageway 62s. As a result, a firmly twisted spun yarn (firm yarn) Y is produced. - However, if the height h of the space SC1 is far greater than the predetermined value, both the ends of the cotton fibers are swung in the spinning chamber SC without being restricted by either of the
fiber guide 61 and thespindle 62. Accordingly, the ends of the cotton fibers are discharged to the outside of theair spinning device 6 more frequently. As a result, fiber loss increases, which is disadvantageous. Even if no fiber loss occurs, the fibers are loosely wound around the central fibers. As a result, a loosely twisted spun yarn Y is produced. Furthermore, the higher the capacity of the spinning chamber SC is, the more the amount of air that needs to be used in producing the swirling airflow in the spinning chamber SC also becomes. Accordingly, the need for increasing the size of the air pressure conveying device arises. This requires upsizing of thespinning unit 1, which is also disadvantageous. - As described above, the spun yarn Y produced by the
air spinning device 6 is influenced by fiber characteristics because theair spinning device 6 causes the fibers to swing by utilizing the swirling airflow. That is, theair spinning device 6 is disadvantageous in that a twisting firmness of the produced spun yarn Y varies according to the fiber characteristics, such as a fiber length and fiber stiffness. - Due to this, it is necessary to change the
fiber guide 61 and thenozzle block 63 in the conventionalair spinning device 6 depending on the fiber characteristics, resulting in increased person hours when producing the spun yarns Y from the slivers F of different fiber characteristics. - The
air spinning device 6A according to a first embodiment of the present invention that provides a solution to the problem described above is explained next. - The
air spinning device 6A produces the spun yarn Y by twisting a drafted sliver F. As shown inFIG. 6 , theair spinning device 6A mainly includes thefiber guide 61, thespindle 62, and thenozzle block 63. Solid arrows shown inFIG. 6 indicate the feed direction of the sliver F and the spun yarn Y. Hollow arrows shown inFIG. 6 indicate an airflow direction of supplied air. - As shown in
FIG. 6 , theair spinning device 6A according to the present embodiment has a configuration that is substantially similar to that of the conventional air spinning device 6 (seeFIG. 3 ). However, theair spinning device 6A differs from theair spinning device 6 in that thefiber guide 61 has aprojection 61b that engages into the throughhole 63p of thenozzle block 63. - Like the conventional
air spinning device 6, theair spinning device 6A produces the spun yarn Y by twisting the sliver F by utilizing the swirling airflow. In the space SC1 of the spinning chamber SC, the trailing-end portions of the fibers that form the sliver F are turned over (see long dashed double-short dashed lines inFIG. 6 ) by the swirling airflow. In the space SC2 of the spinning chamber SC, the trailing-end portions of the fibers that form the sliver F are swung (see the long dashed double-short dashed lines inFIG. 6 ) by the swirling airflow. - Assuming that the fibers to be spun are relatively stiff polyester fibers having a relatively long fiber length, if the height h of the space SC1 is less than the predetermined value, the trailing-end portions of the polyester fibers are introduced into the
fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn). However, in theair spinning device 6A according to the present embodiment, the height h of the space SC1 can be adjusted to an optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having theprojection 61b of shorter length L. - As explained above, if the height h of the space SC1 is far greater than the predetermined value, the polyester fibers in a state where some of the polyester fibers are loosely wound around the central fibers are introduced into the
fiber passageway 62s. As a result, the spun yarn Y that is loosely twisted (loose yarn) is produced. However, in theair spinning device 6A according to the present embodiment, the height h of the space SC1 can be adjusted to the optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having theprojection 61b of longer length L. - Now, assuming that the fibers to be spun are relatively supple cotton fibers having a relatively short fiber length, if the height h of the space SC1 is less than the predetermined value, the trailing-end portions of the cotton fibers are introduced into the
fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn). However, in theair spinning device 6A according to the present embodiment, the height h of the space SC1 can be adjusted to an optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having theprojection 61b of shorter length L. - As explained above, if the height h of the space SC1 is far greater than the predetermined value, the cotton fibers in a state where some of the cotton fibers are loosely wound around the central fibers are introduced into the
fiber passageway 62s. As a result, the spun yarn Y that is loosely twisted (loose yarn) is produced. However, in theair spinning device 6A according to the present embodiment, the height h of the space SC1 can be adjusted to the optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having theprojection 61b of longer length L. - By configuring in this way, in the
air spinning device 6A according to the present embodiment, the height h of the space SC1 can be easily changed by merely replacing thefiber guide 61. That is, in theair spinning device 6A, by merely replacing thefiber guide 61, the capacity of the spinning chamber SC can be easily adjusted according to the fiber characteristics. Thus, theair spinning device 6A is capable of performing spinning according to the fiber characteristics. - Furthermore, even if the
air spinning device 6A is configured without theneedle 61n in thefiber guide 61 as shown inFIG. 7 , the same object and effects according to the present invention can be achieved. The scope of the present invention also encompasses such a modification. In theair spinning device 6A configured in this manner, the sliver F is caught at a downstream end portion of thefiber guide 61 and introduced into thefiber passageway 62s of thespindle 62. - The
air spinning device 6B according to a second embodiment of the present invention that provides a solution to the problem described above is explained next. - The
air spinning device 6B produces the spun yarn Y by twisting the drafted sliver F. As shown inFIG. 8 , theair spinning device 6B mainly includes thefiber guide 61, thespindle 62, and thenozzle block 63. Solid arrows shown inFIG. 8 indicate the feed direction of the sliver F and the spun yarn Y. Hollow arrows shown inFIG. 8 indicate an airflow direction of supplied air. - As shown in
FIG. 8 , theair spinning device 6B according to the present embodiment has a configuration that is substantially similar to that of the conventional air spinning device 6 (seeFIG. 3 ). However, theair spinning device 6B differs from theair spinning device 6 in that thefiber guide 61 has arecess 61c that communicates with the throughhole 63p of thenozzle block 63. - Like the conventional
air spinning device 6, theair spinning device 6B produces the spun yarn Y by twisting the sliver F by utilizing the swirling airflow. The trailing-end portions of the fibers that form the sliver F are turned over (see long dashed double-short dashed lines inFIG. 8 ) in the space SC1 of the spinning chamber SC by the swirling airflow. The trailing-end portions of the fibers that form the sliver F are swung (see the long dashed double-short dashed lines inFIG. 8 ) in the space SC2 of the spinning chamber SC by the swirling airflow. - Assuming that the fibers to be spun are relatively stiff polyester fibers having a relatively long fiber length, if the height h of the space SC1 is less than the predetermined value, the trailing-end portions of the polyester fibers are introduced into the
fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn). However, in theair spinning device 6B according to the present embodiment, the height h of the space SC1 can be adjusted to an optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having therecess 61c of deeper depth D. - As explained above, if the height h of the space SC1 is far greater than the predetermined value, the polyester fibers in a state where some of the polyester fibers are loosely wound around the central fibers are introduced into the
fiber passageway 62s. As a result, the spun yarn Y that is loosely twisted (loose yarn) is produced. However, in theair spinning device 6B according to the present embodiment, the height h of the space SC1 can be adjusted to the optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having therecess 61c of shallower depth D. - Now, assuming that the fibers to be spun are relatively supple cotton fibers having a relatively short fiber length, if the height h of the space SC1 is less than the predetermined value, the trailing-end portions of the cotton fibers are introduced into the
fiber passageway 62s before being sufficiently swung, resulting in the production of the spun yarn Y that is loosely twisted (loose yarn). However, in theair spinning device 6B according to the present embodiment, the height h of the space SC1 can be adjusted to an optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having therecess 61c of deeper depth D. - As explained above, if the height h of the space SC1 is far greater than the predetermined value, the cotton fibers in a state where some of the cotton fibers are loosely wound around the central fibers are introduced into the
fiber passageway 62s. As a result, the spun yarn Y that is loosely twisted (loose yarn) is produced. However, in theair spinning device 6B according to the present embodiment, the height h of the space SC1 can be adjusted to the optimum value by replacing thefiber guide 61 with anotherfiber guide 61 having therecess 61c of deeper depth D. - By configuring in this way, in the
air spinning device 6B according to the present embodiment, the height h of the space SC1 can be easily changed by merely replacing thefiber guide 61. That is, in theair spinning device 6B, by merely replacing thefiber guide 61, the capacity of the spinning chamber SC can be easily adjusted according to the fiber characteristics. Thus, theair spinning device 6B is capable of performing spinning according to the fiber characteristics. - Furthermore, even if the
air spinning device 6B is configured without theneedle 61n in thefiber guide 61 as shown inFIG. 9 , the same object and effects according to the present invention are achieved. The scope of the present invention also encompasses such a modification. In theair spinning device 6B configured in this manner, the sliver F is caught at a downstream end portion of thefiber guide 61 and introduced into thefiber passageway 62s of thespindle 62. - Positions of the
air holes 63a provided in thenozzle block 63 are explained next. -
FIG. 10 is an enlarged view of a region of the spinning chamber SC. Hollow arrows shown inFIG. 10 indicate the airflow direction of the supplied air. - Each of the
air holes 63a of thenozzle block 63 runs obliquely connecting an upper part (upstream portion) of an air storage chamber AC to a bottom (downstream portion) of the space SC1 of the spinning chamber SC. The air stored in the air storage chamber AC is supplied to the spinning chamber SC through each of theair holes 63a. - In the
air spinning devices air hole 63a and a wall surface of the throughhole 63p is located in a range of greater than or equal to 3 mm to less than or equal to 10 mm from a contact surface X between thenozzle block 63 and thefiber guide 61. - By ensuring that the measurement from the point of intersection IS1 to the contact surface X is greater than or equal to 3 mm to less than or equal to 10 mm, it can be ensured that the
air holes 63a will produce a swirling airflow in the spinning chamber SC. If the measurement from the point of intersection IS1 to the contact surface X is less than 3 mm, theair holes 63a will be perpendicular to or substantially perpendicular to the spinning chamber SC. In this case, because no swirling airflow is produced in the spinning chamber SC, the fibers cannot be turned over or swung. If the measurement from the point of intersection IS1 to the contact surface X exceeds 10 mm, the capacity of the spinning chamber SC is increased, resulting in an upsizedair spinning device 6 and increased consumption of air. Because of the increased capacity of the spinning chamber SC, the fibers cannot be swung at a high speed, leading to loosely twisted spun yarn Y. Therefore, it is essential that the point of intersection IS1 between the central axis of theair hole 63a and the wall surface of the throughhole 63p be located in the range of greater than or equal to 3 mm to less than or equal to 10 mm from the contact surface X between thenozzle block 63 and thefiber guide 61. - By configuring in this way, the produced spun yarn Y will not be influenced by the fiber characteristics even if the spun yarn Y is produced from slivers F of different fiber characteristics, and the twisting firmness of the produced spun yarns Y can be stabilized. Furthermore, by replacing the
fiber guide 61 according to the fiber characteristics, a quality of the spun yarn Y can be easily optimized. That is, by ensuring that the measurement from the intersection point IS1 to the contact surface X is between greater than or equal to 3 mm and less than or equal to 10 mm, the length L of theprojection 61b of thefiber guide 61 can be easily changed. Thus, theair spinning devices - In the
air spinning devices air hole 63a and an external wall surface of thenozzle block 63 is located at a position that is away from the contact surface X between thenozzle block 63 and thefiber guide 61 by greater than or equal to 1 mm. The value of greater than or equal to 1 mm has been determined based on a result of tests carried out using stability of the twisting firmness of the produced spun yarn Y as a parameter. More specifically, the value of greater than or equal to 1 mm enables the air to be evenly supplied from the air storage chamber AC to the spinning chamber SC via theair holes 63a, and causes a stabilized swirling airflow to be produced. - The reason why a stabilized swirling airflow is produced if an inlet part of the
air hole 63a is located at a position that is away from the vicinity of the upper (upstream end) wall surface of the air storage chamber AC is because there is no blockage of the air flowing into each of theair holes 63a. Theair hole 63a is provided at a position that is located away by greater than or equal to 1 mm from the contact surface X between thenozzle block 63 and thefiber guide 61 inevitably leads to an increase in a height H of a neck part of thenozzle block 63. Consequently, there is an increase in the capacity of the air storage chamber AC and a good flow of air into each of theair holes 63a. - By configuring in this way, air is evenly supplied into the spinning chamber SC through the
air holes 63a, and the twisting firmness of the produced spun yarn Y can be stabilized. Furthermore, by replacing thefiber guide 61 according to the fiber characteristics, a quality of the spun yarn Y can be easily optimized. Thus, theair spinning devices - Moreover, the position of the
air hole 63a at a position that is located away from the contact surface X between thenozzle block 63 and thefiber guide 61 makes it hard for any contaminant adhering to the contact surface X to enter theair hole 63a. For example, chippings from an O ring 61o that is mounted on an outer periphery of thefiber guide 61 will not easily get into theair hole 63a. Consequently, contaminants are prevented from mixing with the produced spun yarn Y. - If contaminants enter the spinning chamber SC from the air storage chamber AC, the contaminated portion of the spun yarn Y needs to be removed by the
spinning unit 1. This would necessitate stopping the winding operation of the spun yarn Y performed by the windingdevice 9 for cutting and splicing the spun yarn Y, leading to a reduction in a production efficiency of the spun yarn Y. However, in theair spinning device 6, mixing of the contaminant with the spun yarn Y is prevented and therefore no reduction in the production efficiency of the spun yarn Y occurs. - The
spinning unit 1 that includes theair spinning device - In the
spinning unit 1 described above, the spun yarn Y spun by theair spinning device spinning unit 1 is not limited to such a configuration. For example, a configuration is allowable in which a delivery roller and a nip roller are arranged downstream of theair spinning device air spinning device air spinning device device 9 directly winds the spun yarn Y can be employed. - The present invention yields the following effects.
- According to an aspect of the present invention, the produced spun yarn Y is not influenced by fiber characteristics even if a spun yarn is produced from fiber bundles having different fiber characteristics, and a twisting firmness of the produced spun yarn is stabilized.
- According to another aspect of the present invention, because air can be evenly supplied from air holes to the spinning chamber, the twisting firmness of the produced spun yarn is stabilized. Thus, spinning according to the fiber characteristics is easily performed. Furthermore, because the air hole is defined at a position that is located away from a contact surface of a nozzle block and the fiber guide, any contaminants adhering to the contact surface do not easily enter the air hole, and as a result, mixing of the contaminants with the produced spun yarn is prevented.
- According to still another aspect of the present invention, in a spinning unit, spinning according to the fiber characteristics is easily performed by the air spinning device and the spun yarn can be wound on a package by a winding device. Thus, a production efficiency of the package is improved.
- According to a first aspect of the present invention, an air spinning device spins a spun yarn from a fiber bundle. The air spinning device includes a nozzle block that includes a through hole that partially defines a spinning chamber and an air hole that communicates with the spinning chamber; a fiber guide in which a fiber introducing passage that is communicable with the spinning chamber is defined; and a spindle in which a fiber passageway that is communicable with the spinning chamber is defined. The air hole is located such that a point of intersection of a central axis of the air hole and a wall surface of the through hole is in a range of greater than or equal to 3 millimeter (mm) to less than or equal to 10 mm from a contact surface between the nozzle block and the fiber guide.
- According to a second aspect of the present invention, in the air spinning device according to any of the above aspects of the present invention, the air hole is located such that the point of intersection of the central axis of the air hole and an outer wall surface of the nozzle block is located away by greater than or equal to 1 mm from the contact surface between the nozzle block and the fiber guide.
- According to a third aspect of the present invention, a spinning unit includes the air spinning device according to any of the above aspects of the present invention. In addition, the spinning unit includes an air storage chamber and a winding device. The air storage chamber stores therein air to be supplied to the spinning chamber via the air hole. The winding device winds the spun yarn produced by spinning using the air spinning device, and forms a package.
Claims (3)
- An air spinning device (6) that spins a spun yarn (Y) from a fiber bundle (F) by supplying air from an air hole (63a) into a spinning chamber (SC), the air spinning device (6) comprising:a nozzle block (63) that includes a through hole (63p) that partially defines the spinning chamber (SC), and the air hole (63a) that is communicable with the spinning chamber (SC);a fiber guide (61) in which a fiber introducing passage (61g) that is communicable with the spinning chamber (SC) is defined; anda spindle (62) in which a fiber passageway (62s) that is communicable with the spinning chamber (SC) is defined, characterised in thatthe air hole (63a) is positioned such that a point of intersection (IS1) of a central axis of the air hole (63a) and a wall surface of the through hole (63p) falls in a range of greater than or equal to 3 mm to less than or equal to 10 mm from a contact surface (X) at which a downstream end surface of the fiber guide in a yarn feeding direction is received by an upstream end surface of the nozzle block (63) in the yarn feeding direction.
- The air spinning device (6) according to claim 1, wherein the air hole (63a) is located such that the point of intersection (IS2) of the central axis of the air hole (63a) and an outer wall surface of the nozzle block (63) is located away by greater than or equal to 1 mm from the contact surface between the nozzle block (63) and the fiber guide (61).
- A spinning unit (1) comprising:an air spinning device (6) according to any one of Claims 1 and 2;an air storage chamber (AC) adapted to store therein air to be supplied to the spinning chamber (SC) via the air hole (63a); anda winding device (9) adapted to wind a spun yarn (Y) produced by spinning the spun yarn (Y) from a fiber bundle (F) by supplying the air from the air storage chamber (AC), and forms a package.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16170789.8A EP3098337B1 (en) | 2010-11-10 | 2011-11-04 | Air spinning device, spinning unit, and spinning method using the air spinning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010252278A JP2012102432A (en) | 2010-11-10 | 2010-11-10 | Air spinning device, spinning unit having the same, and spinning method using the same |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16170789.8A Division EP3098337B1 (en) | 2010-11-10 | 2011-11-04 | Air spinning device, spinning unit, and spinning method using the air spinning device |
EP16170789.8A Division-Into EP3098337B1 (en) | 2010-11-10 | 2011-11-04 | Air spinning device, spinning unit, and spinning method using the air spinning device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2453045A2 EP2453045A2 (en) | 2012-05-16 |
EP2453045A3 EP2453045A3 (en) | 2015-12-09 |
EP2453045B1 true EP2453045B1 (en) | 2019-01-02 |
Family
ID=44905681
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11187855.9A Active EP2453045B1 (en) | 2010-11-10 | 2011-11-04 | Air spinning device and spinning unit |
EP16170789.8A Not-in-force EP3098337B1 (en) | 2010-11-10 | 2011-11-04 | Air spinning device, spinning unit, and spinning method using the air spinning device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP16170789.8A Not-in-force EP3098337B1 (en) | 2010-11-10 | 2011-11-04 | Air spinning device, spinning unit, and spinning method using the air spinning device |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2453045B1 (en) |
JP (1) | JP2012102432A (en) |
CN (3) | CN102534879B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012102432A (en) * | 2010-11-10 | 2012-05-31 | Murata Mach Ltd | Air spinning device, spinning unit having the same, and spinning method using the same |
CH708164A1 (en) * | 2013-06-14 | 2014-12-15 | Rieter Ag Maschf | Spinneret and thus equipped spinning unit of an air spinning machine. |
CN106012123B (en) * | 2016-08-09 | 2019-03-15 | 苏州江赛纺织科技有限公司 | A kind of big bright-polyester synthetic fibre Technology of Air Vortex Spinning and its process equipment |
CN109629066A (en) * | 2018-12-27 | 2019-04-16 | 杭州正大纺织有限公司 | A kind of vortex spinning yarn applies the production method on the heterochromatic fabric of men's clothing longitude and latitude |
IT201900001195A1 (en) * | 2019-01-28 | 2020-07-28 | Savio Macch Tessili Spa | SPINNING APPARATUS, IN PARTICULAR WITH AIR, WITH CONTINUOUS REGULATION OF A YARN ACCUMULATION SYSTEM AND RELATIVE METHOD OF CONTINUOUS REGULATION OF A YARN ACCUMULATION SYSTEM IN A SPINNING APPARATUS |
JP2021042510A (en) * | 2019-09-13 | 2021-03-18 | 村田機械株式会社 | Spinning unit, air spinning device, spinning machine and spinning method |
CN110656407A (en) * | 2019-10-29 | 2020-01-07 | 江南大学 | Vortex spinning nozzle device |
CN114086283B (en) * | 2022-01-19 | 2022-04-08 | 江苏博腾家用纺织品有限公司 | Twisting equipment |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0641822A (en) * | 1992-07-07 | 1994-02-15 | Murata Mach Ltd | Method for spinning |
JP2003193336A (en) * | 2001-12-19 | 2003-07-09 | Murata Mach Ltd | Spinning apparatus |
JP2003193337A (en) * | 2001-12-19 | 2003-07-09 | Murata Mach Ltd | Spinning apparatus |
CN100429340C (en) * | 2001-12-19 | 2008-10-29 | 村田机械株式会社 | Spinning device |
ATE401440T1 (en) * | 2002-02-12 | 2008-08-15 | Rieter Ag Maschf | TEXTILE PROCESSING MACHINE WITH A FIBER CONVEYOR CHANNEL AND A FIBER GUIDE SURFACE |
DE50304912D1 (en) * | 2002-03-20 | 2006-10-19 | Rieter Ag Maschf | Air spinning device with channel lining |
CH696848A5 (en) * | 2003-07-08 | 2007-12-31 | Rieter Ag Maschf | Adjuster used when spinning-on or attaching at spinning location on air spinning machine, varies clearance between fiber guide and thread-forming component |
EP1584715A1 (en) * | 2004-04-07 | 2005-10-12 | Maschinenfabrik Rieter Ag | Method of manufacturing a yarn in an air-vortex spinning machine |
DE102004044345A1 (en) * | 2004-09-09 | 2006-03-16 | Wilhelm Stahlecker Gmbh | Air-jet spinning device |
CN101294319B (en) * | 2008-05-26 | 2010-06-02 | 东华大学 | Spinning apparatus with air injection whirling current for lowering fibre |
CN101368305B (en) * | 2008-09-26 | 2010-06-02 | 东华大学 | Air injection air vortex spinning apparatus capable of producing composite yarn |
DE102008050874A1 (en) | 2008-09-29 | 2010-04-01 | Wilhelm Stahlecker Gmbh | Air jet spinning unit with spindle-shaped component |
JP2012102432A (en) * | 2010-11-10 | 2012-05-31 | Murata Mach Ltd | Air spinning device, spinning unit having the same, and spinning method using the same |
-
2010
- 2010-11-10 JP JP2010252278A patent/JP2012102432A/en active Pending
-
2011
- 2011-11-01 CN CN201110351190.8A patent/CN102534879B/en active Active
- 2011-11-01 CN CN2011204370531U patent/CN202466010U/en not_active Withdrawn - After Issue
- 2011-11-01 CN CN201610093420.8A patent/CN105696124B/en active Active
- 2011-11-04 EP EP11187855.9A patent/EP2453045B1/en active Active
- 2011-11-04 EP EP16170789.8A patent/EP3098337B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP2453045A2 (en) | 2012-05-16 |
CN105696124B (en) | 2020-01-07 |
CN102534879A (en) | 2012-07-04 |
JP2012102432A (en) | 2012-05-31 |
EP2453045A3 (en) | 2015-12-09 |
CN202466010U (en) | 2012-10-03 |
EP3098337B1 (en) | 2018-03-21 |
EP3098337A1 (en) | 2016-11-30 |
CN102534879B (en) | 2016-07-06 |
CN105696124A (en) | 2016-06-22 |
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