EP1146002B1 - Bobinoir automatique avec un dispositif pour supprimer la quantité de fibres saillantes d'un fil - Google Patents

Bobinoir automatique avec un dispositif pour supprimer la quantité de fibres saillantes d'un fil Download PDF

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Publication number
EP1146002B1
EP1146002B1 EP20010108877 EP01108877A EP1146002B1 EP 1146002 B1 EP1146002 B1 EP 1146002B1 EP 20010108877 EP20010108877 EP 20010108877 EP 01108877 A EP01108877 A EP 01108877A EP 1146002 B1 EP1146002 B1 EP 1146002B1
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EP
European Patent Office
Prior art keywords
spun yarn
yarn
automatic winder
tension
nozzle means
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.)
Expired - Lifetime
Application number
EP20010108877
Other languages
German (de)
English (en)
Other versions
EP1146002A3 (fr
EP1146002A2 (fr
Inventor
Hidetoshi Roureru Couto Muromachi 310 Kimura
Yuji Todo
Koji Takayasu
Itaru Yokota
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Murata Machinery Ltd
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Murata Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2000115881A external-priority patent/JP3502886B2/ja
Priority claimed from JP2000253989A external-priority patent/JP3578067B2/ja
Application filed by Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP1146002A2 publication Critical patent/EP1146002A2/fr
Publication of EP1146002A3 publication Critical patent/EP1146002A3/fr
Application granted granted Critical
Publication of EP1146002B1 publication Critical patent/EP1146002B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J3/00—Modifying the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/705—Arrangements for reducing hairyness of the filamentary material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/12—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/22—Guides for filamentary materials; Supports therefor adapted to prevent excessive ballooning of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/105—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices the material being subjected to the action of a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • B65H59/28—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path the surfaces being urged towards each other
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/10—Tension devices
    • D01H13/104—Regulating tension by devices acting on running yarn and not associated with supply or take-up devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to an automatic winder according to the preamble of claim 1 and as known from US-A-5 351 472 and EP-A-1 103 803.
  • a spun yarn is produced by twisting fibers such as cotton or wool to form a spun yarn and winding the yarn around a supplying bobbin.
  • the supplying bobbin with the spun yarn wound thereon is transported to an automatic winder, which then detects and removes any defect in the spun yarn and joins yarns from a large number of supplying bobbins to rewind them into a package.
  • the spun yarn is released from the supplying bobbin, and tension is applied to the spun yarn by a tenser, and then the spun yarn is wound into the package via many yarn guides which guides the spun yarn.
  • the spun yarn passes through a tenser or a yarn guide, it is subjected to friction, so that the amount of hairinesses present in the spun yarn after the rewinding is larger than that before the rewinding.
  • the hairinesses of the spun yarn relates to the feeling of the yarn, and although it is not best that the spun yarn has no hairiness, too many hairinesses may disadvantageously cause the yarn to be caught in a guide through which the yarn is passed during a subsequent process.
  • a hairiness suppressing device for suppressing the hairinesses of the spun yarn.
  • a known hairiness suppressing device that can appropriately suppress hairinesses of the spun yarn comprises nozzle means for causing a whirling current by injecting air through a yarn passage through which the spun yarn passes.
  • a twist stopping guide is arranged on each of an upstream and a downstream sides of the nozzle means in a yarn running direction.
  • This hairiness suppressing device executes a hairiness suppressing process by using the whirling current to balloon the spun yarn to untwist and additionally twist it, thereby twisting the hairinesses into fibers constituting the spun yarn.
  • a problem with the conventional hairiness suppressing device is that the hairiness suppressing effect is unstable.
  • the conventional hairiness suppressing device fails to provide the effect as expected.
  • the spun yarn contains longer fibers and thus longer hairinesses, it fails to provide the effect of suppressing the hairinesses of the spun yarn as expected. It is particularly difficult to suppress the hairinesses of wool, which is rigid and contains longer hairinesses.
  • an automatic winder comprising a hairiness suppressing device including nozzle means having a yarn passage for allowing a spun yarn to pass therethrough, the nozzle means twisting the spun yarn by means of a whirling current obtained by injecting a gas through the yarn passage, the automatic winder having tension control means for controlling tension of the spun yarn fed to the nozzle means at a substantially constant value.
  • the tension control means maintains the tension of the spun yarn fed to the nozzle means at a substantially constant value, thereby forming the spun yarn fed to the nozzle means into a regular balloon.
  • the yarn always undergoes an even centrifugal force, thus stabilizing the hairiness suppressing effect.
  • the tension control means is a release assistant device located above a supplying bobbin to regulate the yarn passage for the spun yarn drawn out from the supplying bobbin in such a manner that a regulated position is lowered in response to releasing of the spun yarn from the supplying bobbin.
  • the release supporting means can reduce the variation range of the tension of the spun yarn released from the supplying bobbin and can restrain an increase in releasing tension associated with a decrease in the amount of yarn in the supplying bobbin. This makes it possible to feed the spun yarn to the nozzle means located downstream in a yarn running direction while maintaining the tension of the yarn at a substantially constant and low value.
  • the tension control means may comprise a tensioning device for applying tension to be added to the spun yarn, a drive device for driving the tensioning device to adjust a value of the tension added by the tensioning device, and a control section for controlling the drive device so as to maintain the tension of the spun yarn subjected to the added tension at a substantially constant value.
  • the tensioning device adjusts the added tension value, thus making it possible to maintain the tension of the spun yarn supplied to the nozzle means at a substantially constant value.
  • the tensioning device is located upstream of the nozzle means and may be of the gate type. If the tensioning device located upstream of the nozzle means is of the gate type, each gate can be opened or closed to apply an appropriate tension to the spun yarn.
  • the tension of the spun yarn supplied to the nozzle means can be maintained at a reliably low and substantially constant value by restraining an increase in the tension of the spun yarn released from the supplying bobbin by means of the control means for controlling the tension of the spun yarn released from the supplying bobbin and by adjusting the added tension of the spun yarn by means of the tensioning device.
  • the nozzle means causing a whirling current by injecting a gas through the yarn passage has twist stopping means arranged on each of an upstream and a downstream sides of the nozzle means in a yarn running direction, for stopping propagation of twisting applied to the spun yarn by the whirling current.
  • the whirling current in the nozzle means operates to untwist the spun yarn in the upstream side section of the nozzle means, and the distance from the nozzle means to the upstream-side twist stopping means is advantageously longer than the distance from the nozzle means to the downstream-side twist stopping means.
  • a untwisting length must be at least equal to or larger than the length of the hairinesses in order to twist long hairinesses into the spun yarn in an additional twisting section located downstream of the nozzle means.
  • An upstream untwisting section located of the nozzle means is desirably long.
  • the ballooning causes the spun yarn to be whirled to apply a centrifugal force to the hairinesses to thereby extend tips of the hairinesses in a direction opposite to a direction in which the hairinesses are to be twisted into the spun yarn. It is thus desirable to reduce the centrifugal force applied to the hairinesses, while reducing the length of the additional twisting section in order to increase an additional twisting effect.
  • the distance from the nozzle means to the upstream-side (untwisting-side) twist stopping means is set longer than the distance from the nozzle means to the downstream-side (additional-twisting-side) twist stopping means, in order to meet the conditions for the untwisting and additional twisting sections.
  • the present device is preferred for suppressing the hairinesses of a spun yarn containing longer fibers and longer hairinesses.
  • means for reducing a diameter of a balloon of the spun yarn formed between the nozzle means and the upstream-side twist stopping means is provided therebetween.
  • the means for reducing the diameter of the balloon of the spun yarn is provided in the untwisting section to collapse the balloon of the spun yarn to thereby minimize the centrifugal force applied to the tips of the hairinesses despite an increased length of the untwisting section. This allows the yarn to be sufficiently untwisted without extending the hairinesses in the untwisting section, thereby improving the hairiness suppressing effect in the additional-twisting section.
  • a specific example of the means for reducing the diameter of the balloon is a gate type tenser having a plurality of comb teeth that contact with the spun yarn to tension the same is provided.
  • the gate type tenser When as the upstream-side twist stopping means and the means for reducing the diameter of the balloon the gate type tenser is provided, an appropriate radial tension can be applied to the balloon of the spun yarn to prevent the balloon of the spun yarn from being extended in the radial direction without the need to shorten the untwisting section.
  • the hairinesses can be effectively restrained based on the combination of the effects of the increased length of the untwisting section and of restraining the extension of the diameter of the balloon.
  • FIG. 5 shows an automatic winder X having a hairiness suppressing device 1 according to the present invention.
  • the automatic winder X comprises winding units 65 arranged in a line.
  • Each winding unit 65 of the automatic winder X comprises a tenser box T composed of a support plate 52, a tensioning device 53, a hairiness suppressing device 1 and a yarn trap 54.
  • Each winding unit 65 releases a spun yarn Y from a supplying bobbin B (a spun bobbin manufactured by a ring spinning machine) supplied at a predetermined position, then passes the spun yarn Y through a balloon regulating member, the tenser box T, a slab catcher 67 for detecting any defect in the spun yarn Y, and other components, and finally winds the yarn, at a high speed of 1000 m/second or more, into a package P rotated by a traversing drum 68.
  • a supplying bobbin B a spun bobbin manufactured by a ring spinning machine
  • Each winding unit 65 also has an upper-yarn sucking member 70 for guiding a package-side yarn end to a yarn joining device 69 and a lower-yarn sucking member 71 for guiding a supplying bobbin B side yarn end to the yarn joining device 69.
  • the hairiness suppressing device 1 of the automatic winder X comprises nozzle means 2 for untwisting the spun yarn Y, first control means located above the supplying bobbin B and comprising a release assistant device 20 for reducing the variation range of the releasing tension of the spun yarn Y released from the supplying bobbin B and restraining an increase in releasing tension caused by a decrease in the amount of wound yarn associated with the releasing of the yarn from the supplying bobbin B, a tensioning device 53 (hereafter referred to as a "gate type tenser") located downstream of the first control means, for applying an additional tension to the spun yarn Y fed to the nozzle means 2, and second control means comprising a drive device 13 for adjusting the additional tension applied by the gate type tenser 53, the second control means operating based on a tension detected value provided by a tension sensor 11 located downstream of the nozzle means 2.
  • first control means located above the supplying bobbin B and comprising a release assistant device 20 for reducing the variation range of the
  • the hairiness suppressing device 1 shown in Figures 1, 2A and 2B is provided in a yarn running passage (d) in the winding unit 65.
  • the spun yarn Y is formed by twisting fibers such as wool or cotton.
  • the hairiness suppressing device 1 is arranged in the tenser box T of the winding unit 65.
  • the hairiness suppressing device 1 comprises the nozzle means 2, twist stopping means 3, 4 arranged on a downstream and an upstream sides of the nozzle means 2 in a yarn running direction, and the gate type tenser 53 provided in the winding unit 65 as the tensioning device is also used as the upstream-side twist stopping means 4. More specifically, one of a plurality of comb teeth constituting the gate type tenser 53 is used as the upstream-side twist stopping means 4.
  • the nozzle means 2 is composed of a nozzle body 5 made of ceramic and a holder 6 in which the nozzle body 5 is fitted, as also shown in Figures 3 and 4.
  • the nozzle body 5 has a yarn passage 7 formed therein for passing the spun yarn Y through the passage, a plurality of gas injecting holes 8 formed therein for injecting compressed air or the like through the yarn passage 7, and other components.
  • the yarn passage 7 is shaped like a cylinder that penetrates the nozzle body 5 in the yarn running direction.
  • the yarn passage 7 has a yarn introducing slit 9 opened at a position biased in parallel from the axis S of the yarn passage 7 and also has a yarn introducing port 10 located contiguously to the yarn introducing slit 9.
  • the yarn introducing port 10 extends like a fan from the slit 9 and penetrates the nozzle body 5 in its axial direction together with the slit 9.
  • the gas injecting holes 8 open respectively in the yarn passage 7 and are formed in the middle of the yarn passage 7 in its axial direction (yarn running direction).
  • the gas injecting holes 8 are formed along an inner periphery of the yarn passage 7 and opened into the yarn passage 7 in a tangential direction.
  • the nozzle means 2 injects compressed air into the yarn passage 7 through the gas injecting holes 8 to cause a whirling current along the inner periphery of the yarn passage 7 to thereby whirl and balloon the spun yarn Y.
  • the whirling current in the nozzle means 2 is formed in a direction in which the spun yarn Y is untwisted at the upstream side (supplying bobbin B side) of the nozzle means 2 and is then additionally twisted at the downstream side (package P side) of the nozzle means 2.
  • the direction of the whirling current in the nozzle means 2 depends on the direction in which the gas injecting holes 8 are opened into the yarn passage 7, and thus, if a twisting direction of the spun yarn Y is reversed, the opening direction of the gas injecting holes 8 shown in Figure 3 is also reversed.
  • the downstream-side twist stopping means 3 stops propagation of twisting applied to the spun yarn Y by means of the whirling current in the nozzle means 2 and is arranged at the downstream side of the nozzle means 2.
  • the twist stopping means 3 is composed of a twist stopping guide 15 and a presser guide 16.
  • the twist stopping guide 15 is located at the downstream side (package P side) of the yarn passage 7 at a distance (a) from the gas injecting holes 8 in the nozzle means 2 and is fixed to a side surface of the holder 6 of the nozzle means 2 (see Figure 2).
  • the twist stopping guide 15 has a V-shaped guide notch 17 opened from the axis S of the yarn passage 7 to above the yarn introducing port 10. A bottom of the guide notch 17 is located near and above the axis S of the yarn passage 7 (see Figure 4).
  • the presser guide 16 is located at the downstream side (package P side) of the twist stopping guide 15 in the spun yarn running direction, and the presser guide 16 is arranged in a line with the twist stopping guide 15.
  • the presser guide 16 is supported by a shaft 19 via a lever 18 and can be swung around the shaft 19.
  • the presser guide 16 is placed in a receding position ( Figure 6A) where the spun yarn Y can be introduced into the guide notch 17 of the twist stopping guide 15 or in an operating position ( Figure 6B) where the spun yarn Y is held in the guide notch 17 in such a manner as to be bent by the twist stopping guide 15.
  • the gate type tenser 53 is also used as the upstream-side twist stopping means 4 to operate to stop propagation of twisting applied to the spun yarn Y by means of the whirling current in the nozzle means 2, and the gate type tenser 53 is arranged at the upstream side (supplying bobbin B side) of the nozzle means 2 in the spun yarn running direction.
  • the gate type tenser 53 also used as the twist stopping means 4, applies an additional tension the spun yarn Y by coming into contact therewith, and comprises fixed comb teeth 56 and a plurality of movable comb teeth 57.
  • the comb teeth 56, 57 are alternately arranged at intervals across the yarn running passage (d) in its direction. Further, one of the comb teeth 56, 57 (in this embodiment, the comb tooth 56 at a point (q)) acts as the twist stopping means 4.
  • the fixed comb teeth 56 are fixed to the tenser box T via a plate 58.
  • the movable comb teeth 57 are supported by the shaft 19 via an arm 59 and can be swung around the shaft 19 ( Figure 1).
  • the movable teeth 57 are connected to a controller 12 partly constituting tension control means, described later, via the drive device 13, more specifically, a solenoid 13.
  • the controller 12 is connected to the tension sensor 11 provided downstream of the nozzle means 2 so that depending on the value of the tension of the spun yarn Y as measured by the tension sensor 11, the tension sensor 11 can drive the solenoid 13 to urge the movable comb teeth 57 toward the fixed comb teeth 56 to thereby adjust pressure on the spun yarn Y together with circular guide sections 60 located at tips of the comb teeth 56, 57, thus adjusting the tension of the spun yarn Y.
  • the plurality of comb teeth 56, 57 of the gate type tenser 53 come in contact with the spun yarn Y between the nozzle means 2 and the twist stopping means 4 to apply an appropriate tension to ballooning of the spun yarn Y caused by the whirling current in the nozzle means 2.
  • the tension is applied in such a manner that the drive device 13 such as a solenoid, for example, which effects driving depending on the tension value measured by the tension sensor 11 located downstream of the nozzle means 2 urges the movable comb teeth 57 toward the fixed comb teeth 56 to apply an appropriate tension to thereby restrain extension of the balloon in its radial direction.
  • the movable comb teeth 57 are driven away from the fixed comb teeth 56 to reduce the tension acting on the spun yarn Y to thereby extend the balloon in its radial direction. That is, the plurality of comb teeth 56, 57 also act as means for adjusting the diameter of the balloon of the spun yarn Y.
  • the comb tooth 56 located at the point (q) and acting as the twist stopping means 4 of the gate type tenser 53 is arranged upstream of the yarn passage 7 at a distance (b) from the gas injecting holes 8 in the nozzle means 2 ( Figure 2).
  • the distance (b) depends on conditions such as the distance (a) from the gas injecting holes 8 to the twist stopping guide 15 and an average length L of fibers in the spun yarn Y.
  • the average fiber length refers to the average of the lengths of many fibers constituting the yarn.
  • the plurality of comb teeth 56, 57 of the gate type tenser 53 are located between the nozzle means 2 and the comb tooth 56, located at the point (q) and acting as the twist stopping means 4.
  • the plurality of comb teeth 56, 57 come into contact with the spun yarn Y between the nozzle means 2 and the twist stopping means 4, so that based on an urging force of a spring applied to the movable comb teeth 57, an appropriate radial tension is applied to ballooning of the spun yarn Y caused by the whirling current in the nozzle means 2, thus restraining the extension of the balloon in its radial direction. That is, the plurality of comb teeth 56, 57 act as means for reducing the diameter of the balloon of the spun yarn Y.
  • the release assistant device 20 is provided upstream of the gate type tenser 53, that is, at the supplying bobbin B side and constitutes first control means located above the supplying bobbin B and having a balloon regulating member for regulating the yarn passage for the spun yarn Y drawn out from the supplying bobbin B in such a manner that a regulated portion is lowered in response to releasing of the spun yarn Y from the supplying bobbin B, as shown in Figure 1.
  • the release supporting means 20 constituting the first control means is composed of the following main parts; a cylindrical body 23 ( Figure 7) fixed to the automatic winder X and having an opening 36 which is located at the top of the release assistant device 20 and which is used as an outlet for the spun yarn Y, a cylinder body 21 located outside the cylindrical body 23 so as to cover the same and which elevates and lowers depending on the amount of yarn in the supplying bobbin B, and a follow-up mechanism of the cylinder body 21 comprising a sensor 25, a cylinder 26 and a controller (not shown) which operates the cylinder 26 responsive to a signal from the sensor 25.
  • the cylinder body 21 has a first arm 40 having an elevating and lowering block 28 attached to a side surface thereof.
  • the elevating and lowering block 28 is vertically slidably inserted into a rod 29 hanging from a fixed block 27 and is connected to a piston rod 30 of the cylinder 26 which is extended perpendicularly from the fixed block 27 so that the cylinder body 21 can be elevated and lowered as the rod 30 of the cylinder 26 advances and recedes.
  • the cylinder body 21 lowers sequentially in such a manner as to maintain a constant distance from a chess portion 24 of the supplying bobbin B and to cover a core tube 41 of the supplying bobbin B.
  • a terminal portion 22 of the cylinder body 21 is broadened to regulate the extension of the balloon of the spun yarn Y and maintain an appropriate extension in order to obtain a releasing angle, thereby restraining sluffing and hairinesses.
  • the cylinder body 21 has the cylindrical body 23 fixed to a body frame of the automatic winder X and having a through-hole 231.
  • the through-hole 231 forms an opening 36 at an upper end of the cylindrical body 23, the opening 36 being used as an outlet for the spun yarn Y.
  • the cylindrical body 23 is tapered at its lower end to constitute a node 232 ( Figure 7).
  • the core tube 41 of the supplying bobbin B and a yarn layer are slightly coned in such a manner that the yarn layer has a minimum outer diameter at its top and that the outer diameter of the core tube 41 at a lower limit position of the cylinder body 21 is larger than that of its top.
  • the cylinder body 21 has an arm 32 attached thereto and having a slit 32d and a magnet 32b stuck to an underside thereof.
  • the slit 32d is guided by a stopper shaft 22 in such a manner that the cylinder body 21 stops lowering when the magnet 32b and the arm 32 collides against a plate 34b located at a lower end of the stopper shaft 33. That is, when the amount of yarn remaining on the supplying bobbin B is 30% of the full amount, the cylinder body 21 stops lowering.
  • the cylindrical body 23 is fixed immediately above the core tube 41 and serves to broaden the balloon of the spun yarn Y released from the chess portion 24 when a large amount of yarn remains in the supplying bobbin B.
  • the cylindrical body 23 serves to stabilize the baloon form of the spun yarn Y formed by the cylinder body 21.
  • the release assistant device 20 composed of the cylinder body 21 and the other components acts as the first control means for controlling tension, the means being capable of adjusting the tension of the spun yarn Y by moving the cylinder body 21 up and down.
  • the sensor 25 attached to a second arm 43 of the cylinder body 21 detects the chess portion 24 of the supplying bobbin B, and the controller receives an input from the sensor 25 to actuate a directional control valve 31 to cause the piston rod 30 of the cylinder 26 to advance gradually, thus maintaining a substantially constant distance between the cylinder body 21 and the chess portion 24.
  • the sensor 25 may be a diffuse reflection sensor. As shown in the drawings, as the yarn is released from the chess portion 24, the distance from the sensor 25 to the chess portion 24 increases until the sensor 25 issues an OFF signal.
  • the controller moves the piston rod 30 of the cylinder 26 forward via the directional control valve 31. Then, the distance from the sensor 25 to the chess portion 24 decreases until the sensor 25 issues an ON signal. In receipt of the ON signal, the controller stops the piston rod 30 of the cylinder 26 via the directional control valve 31. Repetition of this operation causes the cylinder body 21 to lower sequentially in connection with the releasing.
  • the sensor 25 monitoring the chess portion 24 is not limited to the horizontal position with respect to the chess portion 24 but may be attached at an arbitrary angle between a position immediately above the chess portion 24 and a position that is level with the chess portion 24.
  • Figure 5 shows how the spun yarn Y is being rewound, that is, the spun yarn Y is extended between the supplying bobbin B and the package P
  • the description starts with the state where the spun yarn Y has not been extended between the supplying bobbin B and the package P yet, that is, rewinding of the spun yarn Y has not been started yet.
  • the presser guide 16 is swung to push the spun yarn Y in the V-shaped notch 17 of the twist stopping guide 15. Further, the movable comb teeth 57 are swung toward the fixed comb teeth 56 to sandwich the spun yarn Y between the movable comb teeth 57 and the fixed comb teeth 56 in a zigzag manner. In these conditions, compressed air is injected through the yarn passage 7 from the gas injecting holes 8 in the nozzle means 2 to cause a whirling current in the yarn passage 7 (see Figure 6B).
  • the traversing drum 68 is driven to release and run the spun yarn Y from the supplying bobbin B, thus starting to rewind the spun yarn Y.
  • Figures 7A to 7C show how the cylinder body 21 regulates the balloon.
  • Figure 7A shows that after the supply of a new supplying bobbin B following the discharge of an empty bobbin, the terminal portion 22 of the cylinder body 21 has lowered to an operating state where it covers the core tube 41.
  • Figure 7B shows a 50% bobbin state where the cylinder body 21 has further lowered.
  • the cylinder body 21 lowers sequentially in such a manner as to follow up the releasing of the chess portion 24, and the size of the balloon of the yarn released from the chess portion 24 is larger than the outer diameter of the supplying bobbin B at the releasing position. Consequently, the friction between a portion of the yarn remaining on the supplying bobbin B and a released portion of the yarn decreases to restrain sluffing and hairinesses.
  • Figure 7C shows a 30% bobbin state.
  • the releasing tension tends to increase rapidly, but the cylinder body 21 and the cylindrical body 23 with the node 232 serve to form a stable balloon to restrain the rapid increase in releasing tension. Further, after the amount of yarn remaining on the bobbin has reached 30% of the full amount, the chess portion 24 is gradually deformed and further lowering the cylinder body 21 no longer improves the effect of restraining sluffing and hairinesses.
  • the running spun yarn Y starts to be ballooned using the V-shaped notch 17 of the twist stopping guide 15 and the gate type tenser 53 as the twist stopping points (p) and (q)
  • the spun yarn Y is ballooned by means of the whirling current injected through the yarn passage 7 in such a manner that the spun yarn Y is untwisted at the upstream side of the nozzle means 2 in the yarn running direction and is then additionally twisted at the downstream side of the nozzle means 2 in the same direction.
  • the running spun yarn Y is tensioned due to its contact with the comb teeth 56, 57 of the gate type tenser 53, which acts as the second control means and the twist stopping means 4.
  • the solenoid 13 is driven to urge the movable comb teeth 56 toward the fixed comb teeth 57 to thereby apply a higher tension to the spun yarn Y beforehand so as to regulate the extension of the balloon.
  • the balloon of the spun yarn Y is collapsed (squeezed) toward the downstream side (the side of the nozzle means 2) of the spun yarn Y at the plurality of points in the comb teeth 56, 57 of the gate type tenser 53.
  • the balloon of the spun yarn Y is collapsed at the plurality of points, two or more balloons B1, B2 are formed between the twist stopping points (p) and (q).
  • the spun yarn Y has a large average fiber length and contains long hairinesses, the hairiness suppressing process can be effectively executed.
  • the running spun yarn Y is falsely twisted in response to the ballooning.
  • the false twisting is carried out such that the spun yarn Y is untwisted on the upstream side (the side of the tenser 53) of the nozzle means 2 and is additionally twisted on the downstream side (the side of the twist stopping guide 15) of the nozzle means 2.
  • the false twisting is stopped from propagation by the twist stopping points (p) and (q) of the twist stopping means 15 and the tenser 53 and is limited to between the twist stopping points (p) and (q).
  • the formed balloon is subjected to a substantially constant tension and is always formed into a substantially constant size.
  • the distance (b) is longer than the average fiber length of the spun yarn Y, so that the untwisting is sufficient to twist long hairinesses into fibers. Further, in the untwisting section, the effect of squeezing the balloon B2 of the spun yarn Y reduces a centrifugal force applied to the hairinesses to prevent tips of the hairinesses from extending in the direction opposite to the direction in which the hairinesses are twisted into the yarn.
  • the distance (a) is set shorter than the distance (b) to reduce the centrifugal force applied to the hairinesses to prevent the tips of the hairinesses from extending in the direction opposite to the direction in which the hairinesses are twisted into the yarn.
  • the spun yarn Y is untwisted sufficiently for the hairiness suppressing process and then additionally twisted to twist the long hairinesses into the fibers constituting the yarn, thereby achieving the hairiness suppressing process.
  • Figure 8A shows that the first and second control means of the tension controlling means according to this embodiment are used.
  • Figure 8B shows that only the first control means, that is, the release assistant device 20 is used.
  • Figure 8C shows that neither of the tension controlling means is used.
  • the second control means adjusts the added tension depending on the amount of yarn in the supplying bobbin B as shown in the figure and regulates the size of the balloon of the yarn released from the supplying bobbin B to maintain a constant releasing tension from the start of winding.
  • the releasing tension is low at the start of winding and is high at the end of winding.
  • the yarn break by tension or sluffing often occurs.
  • the running spun yarn Y is subjected to the hairiness suppressing process by means of the hairiness suppressing device 1 and is wound into the package P on the winding bobbin Bf.
  • the automatic winder X having the hairiness suppressing device 1 according to the present invention the releasing tension was constant from the start to end of winding, as shown in Figure 8A. Consequently, a stable hairiness suppressing effect was obtained, and the package P obtained was composed of a spun yarn with few hairinesses.
  • each winding unit 65 cuts the spun yarn Y, removes the defect, and joins the yarn Y.
  • the hairiness suppressing device 1 stops the gas injection and a suction nozzle 54 sucks and catches a yarn end on the supplying bobbin B.
  • the lower-yarn sucking member 71 is swung to the neighborhood of the support plate 52 and sucks the yarn end caught by the suction nozzle 54 to guide it to the yarn joining device 69.
  • the movable comb teeth 57 of the gate type tenser 53, the presser guide 16 of the nozzle means 2 and other components are at the receding position (see Figure 6A), and the yarn end on the supplying bobbin B is passed through the tenser 53, the nozzle means 2 and the downstream-side twist stopping means 3.
  • the upper-yarn sucking member 70 sucks the yarn end from the package P and guides it to the yarn joining device 69, which then performs a joining operation.
  • the tenser 53 of the tenser box T, the hairiness suppressing device 1, and other components are placed in an operating position (see Figure 6B), where a rewinding operation, combined with a hairiness suppressing process for the spun yarn Y, is started.
  • the distances (a) and (b) are determined depending on the average fiber length of the spun yarn Y based on the conditions described above in (1) and (2), and the gate type tenser 53 applies an appropriate radial tension to the balloon B2 of the spun yarn Y in such a manner that the balloon B2 is squeezed at one or more points. Then, the hairiness suppressing process can be effectively executed even if the spun yarn Y has a large average fiber length and contains long hairinesses.
  • the hairiness suppressing device 1 can effectively execute the hairiness suppressing process even on a rigid spun yarn Y.
  • the gate type tenser 53 also acts as the upstream-side twist stopping means 4,
  • the upstream-side twist stopping means 4 can comprise a twist stopping guide and a presser guide similarly to the downstream-side twist stopping means 3.
  • This configuration also ensures a sufficient distance to untwist the spun yarn Y, so that the hairiness suppressing process can be effectively executed not only on short-fiber yarns but also on spun yarns having long fibers and thus long hairinesses mixed therein.
  • the tensioning device must be separately provided but may comprise a gate type tenser or a disk type tenser.
  • Figure 10 shows results of experiments on rewinding of the spun yarn Y using the automatic winder X.
  • the results of the experiments in Figure 10 indicate the relationship between the rate of an increase in the amount of hairinesses after rewinding and the length of hairinesses.
  • the spun yarn was formed by twisting rigid wool and has a fiber length L of 64 mm. Further, the rewinding speed of the automatic winder was set at 800 m/min.
  • the hairiness suppressing device 1 of the present invention was provided to rewind the spun yarn using the automatic winder.
  • the gate type tenser 53 was also used as the upstream-side twist stopping means 4, and the distance (b) was set longer than the distance (a) and than the average fiber length of the spun yarn.
  • the hairiness suppressing device was not provided and the spun yarn was rewound using the automatic winder.
  • the hairiness suppressing device was provided to rewind the spun yarn using the automatic winder.
  • the twist stopping guide was arranged both upstream and downstream of the nozzle means, and the distance from the nozzle means to the twist stopping means (a) was set equal to the distance from the nozzle means to the twist stopping means (b).
  • Figure 9 indicates that the example of the present invention restrains the rate of an increase in the amount of hairinesses compared to the comparative examples 1 and 2. This means that while the automatic winder is rewinding the spun yarn, even if the contact of the spun yarn with the tenser or the like increases the amount of hairinesses, the hairiness suppressing device of the present invention effectively executes the hairiness suppressing process.
  • the example as the present invention is more effective than the comparative examples 1 and 2.
  • the reason why the example as the present invention can effectively suppress hairinesses is assumed to be because the distance (b) is longer than the distance (a) and than the average fiber length of the spun yarn and because the balloon of the spun yarn is squeezed within the distance (b).
  • the example of the present invention is optimal for suppressing hairinesses not only in short-fiber yarns but also spun yarns having long fibers and containing long hairinesses. It is also optimal for suppressing hairinesses of rigid spun yarns of a large average fiber length.
  • the gate type tenser 53 acts as the tensioning device for applying an additional tension to the spun yarn Y supplied to the nozzle means 2 of the second controlling means, but the tensioning device may comprise a disk type tenser.
  • the first control means of the tension controlling means of this embodiment lowers the cylinder body 21 based on the distance between the sensor 25 provided in the release assistant device 20 arranged above the supplying bobbin and the chess portion 24 of the supplying bobbin B, thereby restraining an increase in releasing tension.
  • the cylinder body 21, however, may be lowered, for example, based on the elapsed time.
  • the second control means controls the tension of the spun yarn by being driven based on the tension measured by the tension sensor 11 located downstream of the nozzle means 2.
  • the second control means may control the tensioning device, comprising the gate type sensor 53, based on a decrease in the amount of yarn wound around the supplying bobbin, i.e., may reduce the value of additional tension consistently with the amount of remaining yarn.
  • the upstream-side twist stopping means may comprise various means. It may be, for example, the same as the downstream-side twist stopping means, or means for stopping the twisting of the spun yarn Y using a single twist stopping guide, means for stopping the twisting by abutting two plates together to sandwich the spun yarn Y therebetween, or means for stopping the twisting by inserting one plate between two plates and squeezing the balloon of the spun yarn Y at a plurality of points.
  • the automatic winder of the present invention can effectively suppress hairinesses occurring when the yarn is released from the supplying bobbin B or when the tenser 53 tensions the yarn, thereby making it possible to rewind the spun yarn Y with hairinesses suppressed.
  • the automatic winder of the present invention rewinds the yarn from the supplying bobbin into a package and, for example, may rewind yarns from a plurality of supplying bobbins into a single package.
  • the supplying bobbin has the spun yarn wound thereon and may be a spinning bobbin or a package.
  • a suction nozzle 54 may be arranged near the outlet of the hairiness suppressing device 1 so that hairinesses from the hairiness suppressing device 1 can be collected while being prevented from splashing.
  • a waxing device for waxing the spun yarn may be additionally installed downstream of the hairiness suppressing device 1.
  • the gas used to generate the whirling current to twist the spun yarn Y formed by twisting fibers may be vapors or humidified air containing water droplets, in addition to compressed air.
  • the use of vapors makes it possible to heat the spun yarn Y passing through the yarn passage 7 and the inner periphery of the yarn passage 7 so that the yarn can be processed as if it was ironed when coming into contact with the inner periphery of the yarn passage 7, thus providing such a heat set that maintains a reduced amount of hairinesses.
  • the spun yarn Y is exposed to humidified air or vapors, its hairinesses can be softened.
  • the spun yarn 7, which has been twisted through the yarn passage 7 can have hairinesses entangled therewith, the hairinesses having been softened by false twisting based on untwisting and additional twisting.
  • the gas used to generate the whirling current may be dried and heated air.
  • the tension of the spun yarn supplied to the nozzle means is maintained at a substantially constant value, thereby obtaining a stable hairiness suppressing effect. Further, if the tension is maintained at a substantially constant and appropriate value, a high hairiness suppressing effect is obtained.
  • the distance from the nozzle means to the upstream-side (untwisting-side) twist stopping means is set longer than the distance from the nozzle means to the downstream-side (additional twisting-side) twist stopping means, thus making it possible to effectively suppress long hairinesses.
  • the present invention is optimal for suppressing hairinesses of spun yarns containing long fibers and thus long hairinesses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (11)

  1. Bobinoir automatique comprenant un dispositif de suppression d'ébouriffage (1) qui présente des moyens de filière (2) ayant un passage de fil (7) pour permettre à un fil filé (Y) de passer à travers le moyen de filière torsionnant le fil filé au moyen d'un courant tourbillonnant obtenu par injection d'un gaz à travers le passage de fil et un dispositif tendeur (53), caractérisé en ce qu'un moyen de commande de tension pour contrRler la tension du fil filé (Y) amené aux moyens de filière (2) à une valeur essentiellement constante est un dispositif de d'assistance de libération (20) situé au-dessus d'une bobine d'alimentation (B) et ayant un organe (21) pour réguler l'extension du ballon du fil filé tiré de la bobine d'alimentation de sorte que la position de l'organe de régulation du ballon (21) est abaissée en réponse à la libération du fil filé provenant de la bobine d'alimentation et en ce que le dispositif tenseur (53) est situé entre le dispositif d'assistance de libération (20) et les moyens de filière (2).
  2. Bobinoir automatique selon la revendication 1, caractérisé par un dispositif d'entraînement (13) pour entraîner le dispositif tenseur (53) pour ajuster une valeur de la tension ajoutée par le dispositif tenseur et une section de contrRle (12) pour contrRler le dispositif d'entraînement de manière à maintenir la tension du fil filé soumis à la tension ajoutée à une valeur essentiellement constante.
  3. Bobinoir automatique selon la revendication 2, caractérisé en ce que le dispositif tenseur est du type à embarrage.
  4. Bobinoir automatique selon la revendication 3, caractérisé en ce que le tendeur de fil à embarrage (53) comprend des dents mobiles (56, 57), fixées en alternance à des intervalles (S) dans la direction du passage d'écoulement de fil.
  5. Bobinoir automatique selon la revendication 4, caractérisé en ce que les dents de peigne mobiles (57) sont connectées à l'entraînement (13).
  6. Bobinoir automatique selon l'une des revendications 1 à 5, caractérisé en ce que les moyens de filière (2) ont un moyen d'arrêt latéral de torsion cRté amont (4) et un moyen d'arrêt de torsion cRté aval (3).
  7. Bobinoir automatique selon la revendication 6, caractérisé en ce que la distance entre les moyens de filière (2) et les moyens d'arrêt cRté amont (4) est plus grande que la distance entre les moyens de filière (2) et les moyens d'arrêt de torsion cRté aval (3).
  8. Bobinoir automatique selon la revendication 6, caractérisé en ce qu'une dent de peigne (56) des dents de peigne (56, 57) agissent en tant que moyens d'arrêt de torsion cRté amont (4).
  9. Bobinoir automatique selon la revendication 8, caractérisé en ce que la dent de peigne fixée (56) agissant en tant que moyen d'arrêt de torsion cRté amont est logée à un point (q) en amont du passage de fil (7) à une distance (b) depuis les trous d'injection de gaz (8) dans les moyens de filière (2) dépendant de la distance (a) entre les trous d'injection de gaz (8) et les moyens d'arrêt de torsion cRté aval (3) et la longueur moyenne des fibres du fil filé (Y).
  10. Bobinoir automatique selon la revendication 9, caractérisé en ce que la distance (b) entre les dents de peignes fixes (56) agissant en tant que moyens d'arrêt de torsion cRté amont (4) et les trous d'injection de gaz (8) est plus grande que la distance (a) des trous d'injection de gaz (8) aux moyens d'arrêt de torsion cRté aval (3) et en ce que la somme des deux distances (a, b) est plus grande que la longueur moyenne de fibre du fil filé (Y).
  11. Bobinoir automatique selon la revendication 9, caractérisé en ce que la distance (b) entre les dents de peignes fixes (56) agissant en tant que moyens d'arrêt de torsion cRté amont (4) et les trous d'injection de trou (8) est plus grande que la longueur moyenne de fibre du fil filé (Y).
EP20010108877 2000-04-12 2001-04-09 Bobinoir automatique avec un dispositif pour supprimer la quantité de fibres saillantes d'un fil Expired - Lifetime EP1146002B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000115881A JP3502886B2 (ja) 2000-04-12 2000-04-12 毛羽伏せ装置
JP2000115881 2000-04-12
JP2000253989 2000-08-24
JP2000253989A JP3578067B2 (ja) 2000-08-24 2000-08-24 自動ワインダ

Publications (3)

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EP1146002A2 EP1146002A2 (fr) 2001-10-17
EP1146002A3 EP1146002A3 (fr) 2003-04-02
EP1146002B1 true EP1146002B1 (fr) 2006-06-14

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EP (1) EP1146002B1 (fr)
CN (1) CN1240599C (fr)
DE (1) DE60120544T2 (fr)

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JP2009242028A (ja) * 2008-03-28 2009-10-22 Murata Mach Ltd 自動ワインダーの糸解舒補助装置、および自動ワインダー
JP2012020837A (ja) * 2010-07-14 2012-02-02 Murata Machinery Ltd 毛羽伏せ装置、張力付与ユニット、及び自動ワインダ
TWI583340B (zh) 2011-06-29 2017-05-21 Kikuo Yamada A hair raising device for the cleaning unit of the cleaning tool, and a cleaning method of the cleaning unit of the cleaning tool
CN103510231B (zh) * 2013-09-25 2016-08-17 吴江唯奇布业有限公司 一种络筒纱线毛羽减少装置
JP2015086044A (ja) * 2013-10-30 2015-05-07 村田機械株式会社 ゲート式テンション付与装置、糸巻取装置、テンション部材、及びテンション付与方法
JP2017088344A (ja) * 2015-11-12 2017-05-25 村田機械株式会社 張力付与装置及び糸巻取装置
CN106865348A (zh) * 2017-03-29 2017-06-20 四川恒创特种纤维有限公司 一种导纱位置可调的络筒机
CN110255289B (zh) * 2019-06-04 2024-07-12 青岛宏大纺织机械有限责任公司 一种轴绕式络筒机纱线张力控制装置
IT201900009687A1 (it) * 2019-06-21 2020-12-21 Savio Macch Tessili Spa Dispositivo e metodo per il controllo di un balloon durante la dipanatura di un filato da una spola
EP3828325A1 (fr) * 2019-11-29 2021-06-02 Saurer Intelligent Technology AG Poste de filage et machine à filer à jet d'air comprenant un tel poste de filage et procédé de détermination d'une défaillance de la résistance à la traction d'un fil
CN112267183B (zh) * 2020-10-26 2022-03-08 吴江市天缘纺织有限公司 一种适用多f高弹纱线加捻的防毛丝装置及加捻方法
CN113023489B (zh) * 2021-02-26 2022-10-21 中山辰元纺织科技有限公司 一种槽筒式松式络筒机
CN113247701B (zh) * 2021-05-21 2022-05-03 江西钱皇丝绸制品有限公司 一种蚕丝生产用蚕丝卷绕装置
CN115196425B (zh) * 2022-07-01 2023-03-21 山东正凯新材料股份有限公司 一种纺织机用纱线输送防缠绕导向结构
CN115506064B (zh) * 2022-10-08 2023-11-10 杭州永兴化纤有限公司 一种涤纶细旦多孔丝的后牵伸生产设备及方法

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JPH0676175B2 (ja) * 1990-01-10 1994-09-28 村田機械株式会社 毛羽抑制装置
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TW504526B (en) * 1998-12-25 2002-10-01 Murata Machinery Ltd Hairiness suppressing device for automatic winder

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CN1317442A (zh) 2001-10-17
CN1240599C (zh) 2006-02-08
EP1146002A3 (fr) 2003-04-02
EP1146002A2 (fr) 2001-10-17
DE60120544T2 (de) 2007-06-06
DE60120544D1 (de) 2006-07-27

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