JP5884280B2 - Yarn winding device and yarn winding method - Google Patents

Yarn winding device and yarn winding method Download PDF

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Publication number
JP5884280B2
JP5884280B2 JP2011061354A JP2011061354A JP5884280B2 JP 5884280 B2 JP5884280 B2 JP 5884280B2 JP 2011061354 A JP2011061354 A JP 2011061354A JP 2011061354 A JP2011061354 A JP 2011061354A JP 5884280 B2 JP5884280 B2 JP 5884280B2
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Prior art keywords
yarn
winding
unit
unwinding
speed
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JP2012197135A (en
Inventor
善太 曽根
善太 曽根
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村田機械株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00Forwarding filamentary material
    • B65H51/20Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00Winding, coiling, or depositing filamentary material
    • B65H54/70Other constructional features of yarn-winding machines
    • B65H54/74Driving arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00Applications of devices for metering predetermined lengths of running material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00Applications of devices for metering predetermined lengths of running material
    • B65H61/005Applications of devices for metering predetermined lengths of running material for measuring speed of running yarns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08Automatic end-finding and material-interconnecting arrangements
    • B65H67/081Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Description

  The present invention relates to a yarn winding device and a yarn winding method for winding a yarn unwound from a yarn supplying bobbin as a package.

  As a yarn winding device that winds a yarn unwound from a yarn feeding bobbin as a package, Patent Document 1 discloses that a yarn unwound from a yarn feeding bobbin held by a yarn feeding bobbin holding unit is temporarily stored in a yarn unwinding storage unit. A yarn winding device (winding unit) is described that winds the yarn stored in the yarn storage unit and winds the yarn stored in the yarn unwinding storage unit to form a package. Accordingly, in Patent Document 1, when a yarn defect is detected, the yarn stored in the yarn unwinding storage unit is wound up when the yarn in the yarn supplying bobbin is exhausted and replaced with a new yarn supplying bobbin. The yarn on the yarn supplying bobbin holding portion side and the yarn on the yarn unwinding storage portion side at the yarn joining portion provided between the yarn supplying bobbin holding portion and the yarn unwinding storage portion while continuing winding of the yarn by Can be spliced.

  In Patent Document 1, the yarn is wound at a constant winding yarn speed, and after the yarn joining is completed, the yarn supply speed to the yarn unwinding storage unit, that is, the yarn unwinding from the yarn feeding bobbin. By temporarily increasing the yarn speed, the yarn storage amount in the yarn unwinding storage portion that has decreased during yarn joining is recovered.

JP 2010-47360 A

  Here, in the yarn winding device described in Patent Document 1, during yarn winding, the yarn storage amount in the yarn unwinding storage unit is determined by the unwinding speed at which the yarn is unwound from the yarn feeding bobbin, and the package. Increase or decrease depending on the difference with the winding yarn speed for winding the yarn. On the other hand, in Patent Document 1, as described above, the winding yarn speed is constant. Therefore, in order to adjust the yarn storage amount in the yarn unwinding storage unit so that the yarn does not overflow from the yarn unwinding storage unit or the yarn in the yarn unwinding storage unit is completely lost, the yarn unwinding storage unit It is necessary to increase or decrease the unwinding speed in accordance with the yarn storage amount in

  However, when adjusting the yarn storage amount in the yarn unwinding storage section by increasing / decreasing the unwinding speed, compared to the case where the unwinding speed is set to the maximum possible unwinding speed. The average unwinding speed will be slow. Furthermore, in general, the yarn feeding bobbin has a smaller diameter than the winding bobbin. Therefore, if the unwinding yarn speed is greatly increased or decreased, thread loosening (sluffing) is likely to occur. Yarn breaks easily. From the above, when the yarn storage amount in the yarn unwinding storage unit is adjusted by increasing / decreasing the unwinding yarn speed, the yarn winding productivity in the yarn winding device is low. .

  Further, in the yarn winding device described in Patent Document 1, in order to continue winding the yarn during yarn joining, the yarn storage amount in the yarn unwinding storage unit is set at least until the yarn joining is completed. It is necessary to make more than the amount of yarn to be wound. On the other hand, the yarn joining operation performed for the yarn joining at the yarn joining portion may not succeed once. When the yarn joining operation fails, the yarn joining operation is performed by repeating the yarn joining operation.

  From the above, the yarn storage amount in the yarn unwinding storage unit needs to be larger than at least the amount of yarn wound during a predetermined multiple times of yarn joining operation. Therefore, in order to secure the time for performing the predetermined plural times of yarn joining operation, it is necessary to enlarge the yarn unwinding storage unit so that a sufficient amount of yarn can be stored. And if the yarn unwinding storage part is enlarged, it leads to the enlargement of the whole yarn winding device.

  It is an object of the present invention to increase the yarn winding productivity during yarn winding, and to reduce the time for yarn splicing without increasing the size of the yarn unwinding storage section. It is an object to provide a yarn winding device and a yarn winding method that can be sufficiently secured.

A yarn winding device according to a first aspect of the present invention is a yarn feeding bobbin support portion that supports a yarn feeding bobbin, a yarn being unwound from the yarn feeding bobbin supported by the yarn feeding bobbin supporting portion, and storing the unwound yarn A yarn unwinding storage unit, a winding unit that winds the yarn stored in the yarn unwinding storage unit into a package, and a storage amount detection unit that detects a yarn storage amount in the yarn unwinding storage unit A yarn traveling detection unit that detects the traveling of the yarn between the yarn feeding bobbin support unit and the yarn unwinding storage unit, and the winding according to detection results of the storage amount detection unit and the yarn traveling detection unit. A control unit that controls a winding yarn speed of the take-up unit, and the control unit is configured to control the yarn feeding bobbin by the yarn unwinding storage unit when the yarn traveling detection unit detects the yarn traveling. The yarn unwinding is performed so that the unwinding speed, which is the speed of the yarn unwinded from Controlling the winding unit, and controlling the winding unit such that the winding yarn speed becomes a winding yarn speed determined based on the yarn storage amount detected by the storage amount detection unit, When yarn traveling is detected by the yarn traveling detection unit, if the yarn storage amount detected by the storage amount detection unit is greater than a predetermined upper limit storage amount, the unwinding yarn speed If the yarn storage amount detected by the storage amount detection unit is equal to or less than the upper limit storage amount, the winding unit is controlled so that the winding yarn speed V1 is faster than the unwinding yarn speed. The winding portion is controlled so that the winding yarn speed V2 is slower .

In a yarn winding method according to an eleventh aspect of the invention, a yarn is unwound from a yarn supplying bobbin, the unwound yarn is stored in a yarn unwinding storage unit, and the yarn stored in the yarn unwinding storage unit is wound up to be packaged. The yarn winding method is to detect the traveling of the yarn between the yarn feeding bobbin and the yarn unwinding storage unit, and the amount of yarn stored in the yarn unwinding storage unit, and the detection results Ri preparative winding the yarn in accordance with the yarn winding speed of the package, when the running of the yarn is detected, when the storage amount of the detected yarn is greater than a predefined upper limit accumulation amount, the The yarn is wound at the winding yarn speed V1 that is faster than the unwinding yarn speed that is the speed of the yarn unwound from the yarn supply bobbin by the yarn unwinding storage unit, and the detected storage amount of the yarn is the upper limit storage. If the amount or less, characterized by winding the yarn at a slower yarn winding speed V2 than the yarn unwinding speed To.

  According to these inventions, when the yarn is traveling between the yarn supplying bobbin and the yarn unwinding storage unit, the winding yarn speed is changed according to the detection result of the yarn storage amount in the yarn unwinding storage unit. Thus, the yarn storage amount in the yarn unwinding storage unit can be adjusted without changing the unwinding speed from the yarn supplying bobbin. Therefore, at the time of winding the yarn, it is possible to continue unwinding the yarn at a desired unwinding yarn speed, thereby increasing the yarn winding productivity.

Further, when the yarn is not traveling between the yarn feeding bobbin and the yarn unwinding storage unit, the decrease in the yarn storage amount in the yarn unwinding storage unit can be suppressed by reducing the winding yarn speed. Therefore, it is possible to ensure a sufficient time for performing the yarn joining without increasing the size of the yarn unwinding storage unit. Further, if the winding yarn speed is greatly reduced, the yarn unwinding storage unit can be reduced in size.
Further, according to these inventions, when the traveling of the yarn is detected, that is, when the yarn is continuously stored in the yarn unwinding storage section, the yarn is fed from the yarn supplying bobbin at a constant unwinding yarn speed. And unwinding the yarn, and winding the yarn at a winding yarn speed determined based on the yarn storage amount in the yarn unwinding storage unit, thereby making the yarn storage amount in the yarn unwinding storage unit appropriate. be able to.
Further, by unwinding the yarn at a constant unwinding speed, the yarn winding productivity can be increased.
Further, according to these inventions, the yarn storage amount in the yarn unwinding storage unit can be kept close to the upper limit storage amount, and the yarn overflows from the yarn unwinding storage unit or the yarn is unloaded from the yarn unwinding storage unit. It can be prevented from being completely lost.

  A yarn winding device according to a second aspect of the present invention is the yarn winding device according to the first aspect of the present invention, further comprising a yarn joining portion that performs yarn joining between the yarn on the yarn feeding bobbin side and the yarn on the yarn unwinding storage portion side. It is characterized by having.

  According to the present invention, winding of the yarn can be continued by winding the yarn stored in the yarn unwinding storage unit in the winding unit even while performing the yarn joining in the yarn joining unit. Further, at this time, since the winding yarn speed is changed according to the yarn storage amount in the yarn unwinding storage unit, it is possible to secure a sufficient time for performing the yarn joining in the yarn joining unit. Further, when trying to secure a certain time for performing the yarn joining at the yarn joining portion, the yarn unwinding storage portion can be reduced in size.

  A yarn winding device according to a third aspect of the present invention is the yarn winding device according to the first or second aspect, wherein the yarn traveling detection unit is configured to supply a yarn between the yarn feeding bobbin support unit and the yarn unwinding storage unit. It is characterized by comprising yarn presence / absence detecting means for detecting presence / absence.

  According to the present invention, the yarn traveling can be detected by detecting whether the yarn is present between the yarn feeding bobbin support portion and the yarn unwinding storage portion by the yarn presence / absence detecting means.

  A yarn winding device according to a fourth aspect of the present invention is the yarn winding device according to the first or second aspect, wherein the yarn traveling detection unit has a yarn defect between the yarn feeding bobbin support unit and the yarn unwinding storage unit. It is comprised by the yarn defect detection part which detects this.

  According to the present invention, when the yarn defect is detected by the yarn defect detection unit and the yarn is not run when the yarn is cut by the yarn cutting unit, the yarn defect detection unit detects whether the yarn defect is detected. By doing so, the running of the yarn can be detected.

  A yarn winding device according to a fifth aspect of the present invention is the yarn winding device according to the first or second aspect, wherein the yarn traveling detection unit is configured by traveling speed detecting means for detecting a traveling speed of the yarn. And

  According to the present invention, the traveling of the yarn can be detected based on the traveling speed of the yarn detected by the speed detection unit.

  In a yarn winding device according to a sixth aspect of the present invention, in the yarn winding device according to the first or second aspect of the invention, the yarn traveling detection unit is configured by traveling length detection means for detecting a traveling length of the yarn. It is characterized by.

  According to the present invention, the traveling of the yarn can be detected based on the length of the traveling yarn detected by the traveling length detection unit.

  A yarn winding device according to a seventh aspect of the present invention is the yarn winding device according to any one of the first to sixth aspects, wherein the yarn unwinding storage portion is a yarn from one end to the other end along one direction. Is provided, and the storage amount detection unit is disposed so as to face any part of the yarn winding unit, and the yarn is present in the part of the yarn winding unit. It is characterized by including at least one sensor for detecting whether or not there is.

  According to the present invention, when the yarn unwinding storage unit includes the yarn winding unit, the storage amount detection unit can be configured by one or a plurality of sensors facing the yarn winding unit.

A yarn winding device according to an eighth invention is the yarn winding device according to any one of the first to seventh inventions, wherein when the yarn traveling detection unit does not detect the traveling of the yarn, the control unit The unwinding storage unit is controlled so that the unwinding operation is stopped, and the winding yarn speed V3 is lower than when the yarn traveling detection unit detects the traveling of the yarn. It is characterized by controlling the part.

A yarn winding method according to a twelfth invention is the yarn winding method according to the eleventh invention, when the yarn unwinding operation is stopped when the yarn traveling is not detected, and when the yarn traveling is detected. Further, the yarn is wound at a slower winding speed V3.

  According to these inventions, when the running of the yarn is not detected, no new yarn is stored in the yarn unwinding storage unit. At this time, by reducing the winding yarn speed, the yarn unwinding storage unit It is possible to suppress the decrease in the amount of yarn stored in the as much as possible. As a result, it is possible to secure a sufficient time for performing the yarn joining and the like without increasing the size of the yarn unwinding storage unit. Alternatively, the yarn unwinding storage unit can be reduced in size when it is desired to secure a certain time for performing the yarn splicing or the like.

A yarn winding device according to a ninth aspect of the present invention is the yarn winding device according to any one of the first to eighth aspects, wherein the control unit is configured to store the storage amount when the yarn traveling detection unit does not detect the traveling of the yarn. Only when the yarn storage amount detected by the detection unit is equal to or less than a predetermined intermediate storage amount, the winding yarn speed V3 is slower than when the yarn traveling detection unit detects the yarn traveling. As described above, when the winding unit is controlled and the yarn storage amount detected by the storage amount detection unit is larger than the intermediate storage amount, the yarn traveling detection unit detects the yarn traveling. The winding unit is controlled so that the winding yarn speeds V1 and V2 are the same as those at the time.

  According to the present invention, even when the yarn storage in the yarn unwinding storage unit is stopped, when the yarn storage amount in the yarn unwinding storage unit is large (when it is larger than the intermediate storage amount) By winding the yarn at the same winding yarn speeds V1 and V2 as when the yarn is stored in the yarn unwinding storage unit without slowing the winding yarn speed, the yarn can be wound efficiently. Can be taken. Further, when the winding yarn speed is changed, energy loss occurs. However, by winding the yarn at the same winding yarn speeds V1 and V2 as when the yarn is stored in the yarn unwinding storage portion. This energy loss can be reduced.

A yarn winding device according to a tenth aspect of the present invention is the yarn winding device according to any one of the first to ninth aspects, wherein the control unit has a predetermined amount of yarn stored detected by the storage amount detection unit. The winding unit is controlled so that the winding of the yarn is stopped when the yarn traveling detection unit detects the traveling of the yarn when it is equal to or less than the lower limit stored amount. And

  According to the present invention, when the yarn storage amount in the yarn unwinding storage portion is extremely small (below the lower limit storage amount), the winding of the yarn is stopped, so that the yarn is completely removed from the yarn unwinding storage portion. Can be prevented. Thus, for example, the winding of the yarn is continued until the yarn stored in the yarn unwinding storage unit is completely removed, and the yarn on the yarn unwinding storage unit side for performing the yarn joining is lost. Can be prevented.

  According to the present invention, when the yarn is traveling between the yarn feeding bobbin and the yarn unwinding storage unit, the winding yarn speed is changed according to the detection result of the yarn storage amount in the yarn unwinding storage unit. Thus, the yarn storage amount in the yarn unwinding storage unit can be adjusted without changing the unwinding speed from the yarn supplying bobbin. Therefore, at the time of winding the yarn, it is possible to continue unwinding the yarn at a desired unwinding yarn speed, thereby increasing the yarn winding productivity.

  Further, when the yarn is not traveling between the yarn feeding bobbin and the yarn unwinding storage unit, the decrease in the yarn storage amount in the yarn unwinding storage unit can be suppressed by reducing the winding yarn speed. Therefore, it is possible to ensure a sufficient time for performing the yarn joining without increasing the size of the yarn unwinding storage unit. Further, if the winding yarn speed is greatly reduced, the yarn unwinding storage unit can be reduced in size.

It is a schematic block diagram of the winding unit which concerns on 1st Embodiment of this invention. It is a schematic block diagram of the accumulator of FIG. It is a functional block diagram of the control part of FIG. It is a control flow which shows operation | movement of a rotation storage drum. It is a control flow which shows operation | movement of a winding drum. It is a flow which shows the procedure of operation | movement, such as a yarn splicing. It is a figure which shows an example of the time change of the winding yarn speed in the winding unit, the unwinding yarn speed, and the yarn storage amount. It is the elements on larger scale of FIG. It is a figure equivalent to FIG. 2 of 2nd Embodiment. 6 is a control flow corresponding to FIG. It is a schematic block diagram of the winding unit of the modification 2.

[First Embodiment]
Hereinafter, a preferred first embodiment of the present invention will be described.

  The automatic winder according to the first embodiment includes a number of winding units 2 (yarn winding devices) shown in FIG. Each winding unit 2 includes a yarn supplying section 5, a winding section 6, a yarn traveling detection section 7, a yarn joining section 8, and a yarn unwinding storage section 9.

  The yarn supplying unit 5 includes a yarn supplying bobbin supporting unit 60 for supporting the yarn supplying bobbin 21, a yarn unwinding assisting device 12, and a first tensor 41. Further, the yarn supplying section 5 further includes a bobbin supplying device (not shown) for supplying a new yarn supplying bobbin 21 to the yarn supplying bobbin support section 60. Examples of the bobbin supply device include a magazine-type supply device and a tray-type supply device. When all the spun yarn Y (hereinafter simply referred to as “yarn Y”) is pulled out from the yarn feeding bobbin 21 set on the yarn feeding bobbin support portion 60, the yarn feeding portion 5 is held by the yarn feeding bobbin support portion 60. The empty bobbin is discharged, and the bobbin supply device sequentially supplies new yarn supplying bobbins 21 to the yarn supplying bobbin support portion 60.

  The yarn unwinding assist device 12 lowers the yarn Y from the yarn supplying bobbin 21 by lowering the regulating member 40 covering the core pipe of the yarn supplying bobbin 21 in conjunction with the yarn Y unwinding from the yarn supplying bobbin 21. It is intended to assist you. The regulating member 40 comes into contact with the balloon formed on the upper portion of the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn Y unwound from the yarn feeding bobbin 21, and applies an appropriate tension to the balloon to thereby apply the yarn Y. Assist with unraveling.

  In the vicinity of the yarn unwinding / holding device 12, a yarn feeler 37 capable of detecting the presence or absence of the yarn Y is provided. The yarn feeler 37 detects that the yarn Y pulled out from the yarn supplying bobbin 21 has run out, and transmits an empty bobbin signal to the control unit 109.

  The first tensor 41 applies a predetermined tension to the traveling yarn Y. As this 1st tensor 41, the gate type thing which arrange | positions a movable comb tooth with respect to a fixed comb tooth can be used, for example. The first tensor 41 can apply a constant tension to the yarn Y stored in the accumulator 61 (described later), and the yarn Y can be neatly wound and stored in the accumulator 61.

  The winding unit 6 includes a cradle (not shown) configured to hold the winding bobbin 22, a winding drum 24 for traversing the yarn Y and rotating the winding bobbin 22, and a second tensor 42. . The cradle is configured to be able to swing in a direction in which the cradle approaches or separates from the take-up drum 24, so that the package 30 contacts or is separated from the take-up drum 24. Further, as shown in FIG. 1, a spiral traverse groove 27 is formed on the outer peripheral surface of the winding drum 24, and the yarn Y is traversed by the traverse groove 27.

  The take-up drum 24 drives the take-up bobbin 22 disposed to face the take-up drum 24 by being rotationally driven. The winding drum 24 is driven by a winding drum motor 116 (see FIG. 3).

  The second tensor 42 controls the tension when the yarn Y from which the yarn Y has been unwound from an accumulator 61 (described later) of the yarn unwinding storage unit 9 is wound around the package. As a result, the yarn Y pulled out from the accumulator 61 is wound around the winding bobbin 22 in a state where an appropriate tension is applied. Similarly to the first tensor 41, the second tensor 42 may be a gate type in which movable comb teeth are arranged with respect to fixed comb teeth.

  Further, on the downstream side of the second tensor 42, a waxing device 17 for waxing the running yarn Y is disposed.

  The yarn traveling detection unit 7 includes a yarn clearer 15 (yarn defect detection unit). The yarn clearer 15 is configured to detect a defect in the yarn Y by monitoring the thickness of the yarn Y with an appropriate sensor. By processing a signal from the sensor of the yarn clearer 15, a slab or the like is processed. The yarn defect can be detected. The yarn clearer 15 can also function as a sensor that simply detects the presence or absence of the yarn Y. That is, in the first embodiment, the yarn clearer 15 serves as both the yarn presence / absence detection unit and the yarn defect detection unit according to the present invention. Further, a cutter 16 is arranged at the upstream end of the yarn clearer 15 so that the yarn upstream of the yarn defect can be cut when the yarn defect is detected.

  The yarn joining portion 8 includes a yarn joining device 14 that performs a yarn joining operation, a lower yarn guide pipe 25, and an upper yarn guide pipe 26.

  The yarn splicing device 14 is arranged on the yarn feeding bobbin 21 side when the running yarn is cut, when a yarn defect is detected, when the yarn Y of the yarn feeding bobbin 21 runs out, and the yarn feeding bobbin 21 is replaced. The lower yarn and the upper yarn of the package 30 side (the yarn unwinding storage unit 9 side) are spliced. As the yarn splicing device 14, a mechanical type, a type using a fluid such as compressed air, or the like can be used.

  The lower thread guide pipe 25 is supported so as to be rotatable about a shaft 25a located below the yarn joining device 14, and can be rotated by a lower pipe motor 122 (see FIG. 3). ing. A suction port 25b is provided at the tip of the lower thread guide pipe 25, and a clamp portion (not shown) is provided in the suction port 25b. Further, a negative pressure source (not shown) is connected to the lower thread guide pipe 25, so that a negative pressure is supplied, thereby generating a suction flow for sucking the thread Y into the suction port 25b. .

  The upper thread guide pipe 26 is supported rotatably about a shaft 26a located above the yarn joining device 14, and can be rotated by an upper pipe motor 121 (see FIG. 3). ing. A suction port 26b is provided at the tip of the upper thread guide pipe 26, and a clamp portion 26c (see FIG. 2) is provided in the suction port 26b. Further, a negative pressure source 120 (see FIG. 2) is connected to the upper thread guide pipe 26, so that a negative pressure is supplied, whereby suction for sucking the thread Y into the suction port 26b is performed. A flow is generated.

  The yarn unwinding storage unit 9 includes an accumulator 61 that unwinds the yarn Y from the yarn supplying bobbin 21 and stores the unwound yarn Y. FIG. 2 is a schematic configuration diagram of the accumulator 61.

  As shown in FIG. 2, the accumulator 61 includes a rotary storage unit 71, a rotary storage drum motor 72, a yarn guide member 73, a blow-down nozzle 74, a yarn path forming member 75, and the like.

  The rotation storage unit 71 is a drum that can rotate around the axis C1. When the rotation storage unit 71 is rotated in one direction as described later, the yarn Y is unwound from the yarn supplying bobbin 21, and the unwinding is performed. As the wound yarn Y is wound around the rotation storage unit 71, the yarn Y is stored in the rotation storage unit 71.

  In addition, the rotary storage portion 71 has tapered portions 71a and 71b whose diameters become smaller as both end portions in the rotation axis direction approach the opposite end portions, respectively, and the tapered portion 71a and the tapered portion. The portion between 71b is a straight portion 71c (yarn winding portion) in which the diameter is substantially constant and the yarn Y is wound from one end to the other end.

  Further, a rubber annular member 81 such as a rubber band or an O-ring is wound around the yarn unwinding side end of the straight portion 71c of the rotary storage portion 71, for example. Thereby, when the rotation storage part 71 rotates, the annular member 81 rotates integrally with the rotation storage part 71. Further, as described above, the upper right end portion of the rotary storage portion 71 is the tapered portion 71b, so that the annular member 81 is prevented from falling off from the rotary storage portion 71 to the upper right.

  The rotary storage drum motor 72 is a position-controllable motor such as a DC brushless motor, a stepping motor, or a servo motor, and rotates the rotary storage unit 71 in both directions. In addition, a rotary encoder 153 is attached to the rotary storage drum motor 72, and the rotary encoder 153 transmits an angle signal according to the rotation angle of the rotary storage drum motor 72 to the control unit 109.

  The thread guide member 73 is a pipe extending in a straight line, and is arranged so that the upper left end portion in FIG. 2 faces the tapered portion 71a. As a result, the yarn Y that has traveled from the yarn supplying portion 5 side to the yarn guide member 73 is guided to the taper portion 71 a by the yarn guide member 73.

  The blow-down nozzle 74 is disposed on the right side of the yarn guide member 73 in the drawing, and opens into the yarn channel 146 connected to the internal space of the yarn guide member 73, and the yarn channel 146. And a downflow passage 147 formed to be inclined with respect to 146.

  A pressure air source 151 is connected to the downflow passage 147 via a connection pipe 149 and a connection pipe 150. An electromagnetic valve 152 electrically connected to the control unit 109 is connected between the connection pipe 149 and the connection pipe 150. Is provided.

  The yarn path forming member 75 forms the yarn path 128 and is disposed between the suction port 26 b of the upper thread guide pipe 26 and the blow-down nozzle 74. The yarn path 128 extends almost directly from the lower end located immediately above the suction port 26b of the upper yarn guide pipe 26, and at its upper end, bends to the upper left in FIG. Is opposed to the lower right end portion of the yarn flow path 146 of the blow-down nozzle 74.

  With such a configuration of the yarn guide member 73, the blow-down nozzle 74, and the yarn path forming member 75, the electromagnetic valve 152 is opened, and the pressure air of the pressure air source 151 is connected to the connection pipe 150, the connection pipe 149, and the downstream side. When discharged through the path 147 to the yarn flow path 146 in order, the internal space of the yarn guide member 73, the yarn flow path 146, and the yarn path 128 are directed from the rotation storage portion 71 side to the upper yarn guide pipe 26 side. An air flow is formed. The air flow allows the yarn end of the yarn Y wound around the rotary storage portion 71 to be sucked and captured and pulled out to the yarn joining portion 8 side.

  At this time, since the yarn guide member 73 is a pipe having an internal space that opens only at both ends thereof, when an air flow is generated in the internal space of the yarn guide member 73 by the blow-down nozzle 74, the inside of the yarn guide member 73 In the space, the air pressure is greatly reduced by sucking the internal air. Thereby, the yarn end of the yarn Y can be sucked strongly, and the yarn end of the yarn Y can be reliably captured.

  Further, a pull-out sensor 154 capable of detecting that the yarn end of the yarn Y wound around the accumulator 61 is actually pulled out to the yarn joining portion 8 side is provided at the lower end of the yarn path forming member 75 described above. The pull-out sensor 154 is electrically connected to the control unit 109 and transmits a pull-out detection signal to the control unit 109 when detecting that the yarn end of the yarn Y has been pulled out to the yarn joining unit 8 side. It has become. Further, since the yarn clearer 15 can detect the presence of the yarn Y, the yarn clearer 15 can also serve as the drawer sensor 154. In this case, it is not necessary to provide a drawing sensor 154 for detecting the drawing separately from the yarn clearer 15.

  Further, the accumulator 61 is provided with an upper limit yarn sensor 155, an intermediate yarn sensor 156, and a lower limit yarn sensor 157 for detecting the storage amount of the yarn Y. In these yarn sensors 155 to 157, the storage amount of the yarn Y in the rotary storage unit 71 is A1 (upper limit storage amount, for example, 300 m), A2 (intermediate storage amount, for example, 200 m), and A3 (lower limit storage amount, for example, 40 m). ) Is positioned at a position facing the upper end of the bundle of yarns Y wound around the rotary storage unit 71. Here, A1 is larger than the amount of yarn Y wound around the take-up bobbin 22 while a yarn joining operation described later is executed a plurality of times (for example, three times). With this configuration, while the yarn sensors 155 to 157 detect the presence of the yarn Y at the facing position, the yarn amount storage amount of the yarn Y is larger than that of A1, A2, and A3 in the control unit 109. The signal which shows is transmitted.

  Here, in 1st Embodiment, in the straight part 71c of the rotation storage part 71, the range (winding width | variety of the thread | yarn Y wound around the straight part 71c) which the end by the side of the winding part 6 of the wound thread | yarn Y should come around Is defined in advance in a range R1 shown in FIG. Thereby, the range of the storage amount of the yarn Y in the rotation storage unit 71 is set to the upper limit of the storage amount of the yarn Y (about 300 m) when the yarn Y is wound up to the maximum of the range R1 (upper right end in FIG. 2). The lower limit is set to the storage amount (about 40 m) of the yarn Y when the yarn Y is wound to the minimum of the range R1 (the lower left end in FIG. 2).

  In the first embodiment, as will be described later, the yarn sensors 155 to 157 are used to store the yarn Y in the range R1 in the rotary storage unit 71, respectively. Whether or not the Y storage amount is greater than A1 defined as the upper limit position of the storage amount range R1, whether or not it is greater than A2 defined as an intermediate position of the storage amount range R1, and It is detected whether there is more than A3 prescribed | regulated as a lower limit position of the range R1 of the said storage amount.

  The storage amount of the yarn Y in the rotary storage unit 71 when the yarn Y is stored up to the upper limit of the range R1 is set smaller than the maximum storage amount of the yarn Y that can be actually stored in the rotary storage unit 71. Thus, as will be described later, even when the yarn storage amount in the rotary storage unit 71 temporarily exceeds the above A1, the yarn Y does not overflow from the rotary storage unit 71.

  Next, the configuration of the control unit 109 of the winding unit 2 will be described. As shown in FIG. 3, the control unit 109 includes a CPU (Central Processing Unit) that is an arithmetic processing unit, a control program executed by the CPU, and a ROM (Read Only Memory) that stores data used for the control program, The RAM (Random Access Memory) for temporarily storing data when the program is executed is provided. Then, the control program stored in the ROM is read into the CPU and executed on the CPU, whereby the control program executes hardware such as the CPU, the take-up drum motor control unit 160, the rotary storage drum motor control unit 161. The drawn yarn length calculation unit 163, the upper pipe control unit 164, and the lower pipe control unit 165 function.

  The winding drum motor control unit 160 controls the rotation speed of the winding drum motor 116. The rotary storage drum motor control unit 161 controls the rotation direction and rotation speed of the rotary storage drum motor 72.

  The drawn yarn length calculation unit 163 is drawn from the accumulator 61 to the yarn joining unit 8 based on the rotation angle of the rotary storage drum motor 72 detected by the rotary encoder 153 from the time when the drawing sensor 154 detects the yarn Y. The drawn yarn length as the yarn length of the obtained yarn Y is calculated.

  The upper pipe control unit 164 compares the yarn defect length acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculation unit 163, and when the drawn yarn length reaches the yarn defect length, The upper thread guide pipe 26 is swung in the clamped state, and the thread Y on the winding unit 6 side is guided to the yarn joining device 14 and set. The lower pipe control unit 165 turns the lower yarn guide pipe 25 while being clamped, and guides and sets the yarn Y on the yarn supplying unit 5 side to the yarn joining device 14.

  Next, the winding operation of the yarn Y in the winding unit 2 will be described with reference to FIGS.

  The operator of the automatic winder (winding unit 2) unwinds the yarn Y from the yarn supplying bobbin 21, and uses the yarn Y as a yarn unwinding assisting device 12, a yarn feeler 37, a first tensor 41, a yarn clearer 15, and an accumulator. 61, the second tensor 42, and the waxing device 17 are fixed to the take-up bobbin 22. The yarn path of the yarn Y in the accumulator 61 is as shown in FIG. That is, the operator passes the yarn Y through the pull-out sensor 154, the yarn path 128 of the yarn path forming member 75, the yarn channel 146 of the blow-down nozzle 74, and the internal channel of the yarn guide member 73 in this order.

  In this state, the operator pulls the yarn Y from the opening of the yarn guide member 73 facing the rotation storage portion 71, winds the yarn Y around the rotation storage portion 71, for example, about 5 to 20 times, and further rotates the rotation storage portion 71 and the annular member 81. , And is set on the second tensioner 42 after being set on the yarn guide 82 disposed on the upper right side of the rotary storage portion 71. Note that the yarn Y in FIG. 2 is drawn thick for convenience of explanation, and the winding interval is large, but in reality, the rotation storage unit 71 is always several hundred turns with a small winding interval. A bundle of yarns Y wound to a certain extent is stored.

  In this state, the rotary storage drum motor 72 and the take-up drum motor 116 are driven. Then, the rotation storage part 71 rotates, so that the yarn Y of the yarn feeding bobbin 21 is unwound and the unwound yarn Y is wound around the taper part 71a. The yarn Y wound around the tapered portion 71a moves toward the straight portion 71c along the surface of the tapered portion 71a, whereby the yarn Y is wound around the rotary storage portion 71 along its axial direction. Further, when the winding drum 24 rotates, the yarn Y stored in the rotation storage unit 71 is unwound and wound on the winding bobbin 22 that rotates together with the winding drum 24. That is, the winding unit 2 starts winding the yarn Y. While the yarn Y is being wound by the winding unit 2, the rotational speed of the rotary storage unit 71 and the winding drum 24 is controlled along the flow of FIGS. 4 and 5.

  Operation | movement of the rotation storage part 71 is demonstrated. In the first embodiment, as will be described later, the unwinding speed of the yarn Y from the yarn supplying bobbin 21 is within a range in which the yarn Y can be normally unwound except when the rotation of the rotation storage unit 71 is stopped. The rotation storage part 71 is rotated at a rotation speed such that the maximum Vc is obtained. Here, the Vc is determined within a range in which troubles such as slacking of the yarn Y do not occur when the yarn Y is unwound from the yarn feeding bobbin 21 depending on the material and thickness of the yarn Y. The In the present invention, the unwinding speed indicates the speed of the yarn Y that is unwound from the yarn supplying bobbin by the rotary storage unit 71.

  Then, as shown in FIG. 4, when the rotary storage unit 71 is rotating (S101: YES), the yarn clearer 15 has not detected a defect in the yarn Y (S102: NO), and the yarn When the presence of Y is detected (S103: YES), that is, when the traveling of the yarn Y is detected, the rotation of the rotation storage unit 71 is continued as it is. On the other hand, when the yarn clearer 15 detects a defect in the yarn Y (S102: YES) or when the presence of the yarn Y is not detected (S103: NO), the rotation of the rotation storage unit 71 is stopped ( S104), the process returns to S101.

  On the other hand, in the state where the rotation of the rotation storage unit 71 is stopped (S101: NO), for example, the rotation of the rotation storage unit 71 is stopped in S104, the yarn joining operation by the yarn joining unit 8 is completed. During the period (S105: NO), the rotation storage unit 71 is held in a stopped state, and when the yarn joining operation by the yarn joining unit 8 is completed (S105: YES), the rotation of the rotation storage unit 71 is resumed. (S106) and the process returns to S101.

  Next, the operation of the winding drum 24 will be described. As shown in FIG. 5, when the storage amount of the yarn Y in the rotary storage unit 71 is larger than A3 (lower limit storage amount), that is, the lower limit yarn sensor 157 detects the storage of the yarn Y that exceeds the specified lower limit. In the case (S201: YES), when the yarn clearer 15 does not detect the defect of the yarn Y (S202: NO) and the presence of the yarn Y is detected (S203: YES), that is, the yarn Y Is detected, the rotational speed of the winding drum 24 is changed according to the amount of yarn Y stored in the rotary storage 71.

  Specifically, when the upper limit yarn sensor 155 detects the storage of the yarn Y that exceeds the specified upper limit, that is, when the amount of storage of the yarn Y in the rotary storage unit 71 is larger than A1 (S204: YES) ), The winding drum 24 is rotated at a predetermined rotational speed such that the winding speed of the yarn Y is V1 higher than the unwinding speed Vc, and the winding Y is wound around the winding bobbin 22. (S205) and return to S201. In the present invention, the winding yarn speed indicates the speed of the yarn Y wound around the package by the rotation of the winding drum 24.

  On the other hand, when the yarn Y is not detected by the upper limit yarn sensor 155, that is, when the storage amount of the yarn Y in the rotary storage unit 71 is A1 or less (S204: NO), the winding drum 24 is wound around the yarn Y. The yarn is rotated at a predetermined rotational speed such that the take-up speed is V2 slower than the unwinding speed Vc, and the winding of the yarn Y onto the winding bobbin 22 is continued (S206), and the process returns to S201.

  Further, when the yarn clearer 15 detects a defect in the yarn Y (S202: YES) in a state where the storage of the yarn Y exceeding the specified lower limit is detected by the lower limit yarn sensor 157 (S201: YES), or When the presence of the yarn Y is not detected (S203: NO), that is, when the running of the yarn Y is not detected and the yarn Y is detected by the intermediate yarn sensor 156 (S207: YES), the rotary storage unit 71 Since the yarn Y is stored in an amount larger than the amount Y2 of the yarn Y, winding is continued while maintaining the winding speed (S208). In other words, the same rotational speed as when the presence of the yarn Y is detected (S203: YES), specifically, the rotational speed at which the winding yarn speed becomes V1 when the yarn storage amount is larger than A1. When the yarn storage amount is A1 or less, the winding of the yarn Y onto the winding bobbin 22 is continued at a rotational speed such that the winding yarn speed V2 is obtained. Then, the process returns to S201.

  On the other hand, when the storage amount of the yarn Y in the rotary storage unit 71 is A2 or less and the yarn Y is no longer detected by the intermediate yarn sensor 156 (S206: NO), the winding yarn speed is higher than the above-described V1 and V2. After the rotational speed of the winding drum 24 is decreased to a rotational speed at which V3 becomes slow, the winding of the yarn Y onto the winding bobbin 22 is continued (S209), and the process returns to S201.

  Further, when the amount of yarn Y stored in the rotation storage unit 71 becomes A3 or less and the yarn sensor 157 no longer detects the yarn Y (S201: NO), the rotation of the winding drum 24 is stopped regardless of other conditions. As a result, the winding of the yarn Y onto the winding bobbin 22 is stopped (S210), and the process returns to S201.

  Next, when the running yarn Y is cut, when a yarn defect is detected, or when the yarn Y of the yarn supplying bobbin 21 is lost and the yarn supplying bobbin 21 is replaced, etc. The procedure of will be described. As shown in FIG. 6, when a defect of the yarn Y is detected by the yarn clearer 15 (S301: YES), the yarn Y is cut by the cutter 16 to remove the defective portion (S302), which will be described later. The yarn joining operation is performed (S303), and the process returns to S301.

  When the yarn clearer 15 does not detect the presence of the yarn Y (S301: NO, S304: NO), the yarn Y of the yarn supplying bobbin 21 remains, that is, the yarn filler 37 detects the yarn Y. In this case, it is determined that the presence of the yarn Y is no longer detected by the yarn clearer 15 due to the running yarn Y being cut (S305: NO), a yarn splicing operation described later is performed (S303), and the process returns to S301. .

  On the other hand, when the yarn Y of the yarn supplying bobbin 21 is exhausted, that is, when the yarn Y is not detected by the yarn feeler 37 (S305: YES), it waits for the yarn supplying bobbin 21 to be replaced (S306: NO). ) When the yarn feeding bobbin 21 is replaced and the yarn Y pulled out from the yarn feeding bobbin 21 is detected by the yarn feeler 37 (S306: YES), the yarn joining operation described later is immediately performed (S303), Return to S301.

  Here, the procedure of the yarn joining operation in S303 will be described. In order to perform the yarn splicing operation, first, the electromagnetic valve 152 is switched to the open state, so that the rotation space 71 side moves toward the upper yarn guide pipe 26 side into the internal space of the yarn guide member 73, the yarn path 128, and the like. Create an air flow.

  At the same time, the suction port 26b of the upper thread guide pipe 26 is switched from the closed state to the opened state, whereby an air flow from the suction port 26b side to the negative pressure source 120 side is applied to the upper thread guide pipe 26. Form.

  Next, the rotation storage unit 71 is rotated at a low speed in the direction opposite to that when the yarn Y is wound. Then, the yarn end of the yarn Y existing on the rotation storage portion 71 is sucked into the opening of the yarn guide member 73 and pulled out to the suction port 26b of the upper yarn guide pipe 26 via the yarn path 128 and the like.

  Then, when the drawn yarn Y is detected by the drawing sensor 154, a predetermined amount of yarn is sucked out while continuing the low speed rotation of the rotation storage unit 71, and then the suction port 26b is changed from the open state to the closed state. The thread Y is clamped by the clamp part 26c, and the upper thread guide pipe 26 is turned from the upper side to the lower side about the shaft 26a, so that the thread Y drawn from the accumulator 61 is spun at the yarn splicing part 8. Guide to device 14.

  On the other hand, similarly to the upper yarn guide pipe 26, the lower yarn guide pipe 25 sucks and captures the yarn end of the yarn Y existing around the yarn feeler 37 and guides the yarn Y to the yarn joining device 14. When the yarn Y on the accumulator 61 side and the yarn Y on the yarn feeding unit 5 side are set in the yarn joining device 14, the control unit 109 causes the yarn joining device 14 to execute the yarn joining operation, and the yarn feeding unit 5 side The yarn splicing operation between the yarn Y and the yarn Y on the accumulator 61 side is completed.

  Note that the yarn joining operation by the yarn joining device 14 may not succeed once, and when the yarn joining operation fails, the yarn joining operation is repeatedly executed a plurality of times.

  Next, as described above, the unwinding speed of the yarn Y from the yarn supplying bobbin 21 when the winding unit 2 is operated by controlling the rotary storage unit 71 and the winding drum 24, and the winding drum. The change in the winding speed of the yarn Y to 24 and the amount of storage of the yarn Y in the rotary storage unit 71 will be described with an example.

  As shown in FIG. 7, immediately after the start of winding, the yarn Y is not detected by the upper limit yarn sensor 155 because the amount of yarn Y stored in the rotating storage unit 71 is smaller than A1. Therefore, the rotation storage unit 71 rotates at a rotation speed such that the unwinding speed is Vc. On the other hand, the winding drum 24 rotates at a rotational speed such that the winding yarn speed is V2 that is slower than Vc, which is the unwinding speed. Therefore, the storage amount of the yarn Y in the rotary storage unit 71 increases with time due to the difference between the unwinding yarn speed Vc and the winding yarn speed V2.

  At time T1, when the storage amount of the yarn Y in the rotary storage unit 71 exceeds A1, the upper limit yarn sensor 155 detects the yarn Y, and the winding drum 24 has a winding yarn speed Vc of the unwinding yarn speed. The rotational speed is increased to a rotational speed that is faster than V1. Thereby, the storage amount of the yarn Y in the rotary storage unit 71 decreases with the passage of time.

  When the storage amount of the yarn Y in the rotational storage unit 71 decreases to A1 or less, the upper limit yarn sensor 155 stops detecting the yarn, and the winding drum 24 has a winding yarn speed higher than Vc that is the unwinding yarn speed. Decelerate to a rotational speed that results in a slow V2. Thereby, the storage amount of the yarn Y in the rotary storage unit 71 increases with the passage of time.

  Then, hereinafter, the yarn clearer 15 detects the presence of a yarn defect, or the yarn Y of the yarn feeding bobbin 21 disappears, or the yarn Y between the yarn feeding bobbin 21 and the rotation storage unit 71 is cut. Thus, the winding drum 24 repeatedly accelerates and decelerates until time T2 when the presence of the yarn is no longer detected, and the winding yarn speed by the winding drum 24 is alternately switched between V1 and V2. Thereby, the storage amount of the yarn Y in the rotary storage unit 71 is alternately increased and decreased, and is held at an amount close to A1.

  The operation during the above-described time T1 to time T2 will be described in more detail with reference to FIG. FIGS. 8A and 8B are enlarged views of the vicinity of portions between time T1 and time T2 in FIGS. 7A and 7C, respectively. However, in FIGS. 8A and 8B, the above-mentioned part of FIG. 7 is drawn in the time axis direction so as to make the drawing easy to see.

  As shown in FIG. 8, when the yarn Y is detected by the upper limit yarn sensor 155 at time T1, the rotation speed of the winding drum 24 starts to be accelerated at time T11 slightly delayed from time T1, and then almost constant. The winding yarn speed reaches V1 at time T12. The delay of time T11 from time T1 is the time it takes for the winding drum motor control unit 160 to start increasing the speed of the winding drum motor 116 after the yarn Y is detected by the upper limit yarn sensor 155. is there. Then, the winding drum 24 is rotated at a constant rotational speed such that the winding yarn speed becomes V1 until time T13 when the upper limit yarn sensor 155 no longer detects the yarn Y.

  At this time, the storage amount of the yarn Y in the rotary storage unit 71 increases until the winding yarn speed reaches Vc of the unwinding yarn speed, and after the winding yarn speed exceeds Vc of the unwinding yarn speed, Decrease.

  When the yarn Y is no longer detected by the upper limit yarn sensor 155 at time T13, deceleration of the rotational speed of the winding drum 24 starts at time T14 slightly delayed from time T13, and then decelerates at a substantially constant acceleration. Thus, at time T15, the speed is reduced to a rotational speed at which the winding speed of the yarn Y becomes V2. The delay of time T14 from time T13 is the time it takes for the winding drum motor control unit 160 to start decelerating the winding drum motor 116 after the upper limit yarn sensor 155 no longer detects the yarn Y. is there. The winding drum 24 then rotates at a constant rotational speed such that the winding yarn speed becomes V2 from time T16 when the yarn Y is detected by the upper limit yarn sensor 155 to time T17 slightly delayed.

  Then, by repeating such an operation, the storage amount of the yarn Y in the rotary storage unit 71 repeatedly increases and decreases across A1, thereby the storage amount of the yarn Y in the rotary storage unit 71 becomes A1. Is kept close to the amount.

  Subsequently, at time T2, when the yarn clearer 15 detects a yarn defect or no longer detects the presence of the yarn Y, the rotation of the rotation storage unit 71 stops and the unwinding yarn speed becomes zero. Further, at time T2, the amount of yarn Y stored in the rotary storage unit 71 is close to A1, and is larger than A2, so the yarn Y is detected by the yarn sensor 156, and the winding drum 24 is wound as before. The winding of the yarn Y around the take-up bobbin 22 is continued.

  At this time, since the rotation of the rotary storage unit 71 is stopped and the yarn Y is not newly stored in the rotary storage unit 71, if the amount of the yarn Y to the winding bobbin 22 is continued, the rotary storage unit The amount of yarn Y stored in 71 gradually decreases with the passage of time. Therefore, if the yarn clearer 15 detects a yarn defect or the presence of the yarn Y is not detected by the yarn clearer 15 when the winding speed of the winding drum 24 is V1. The take-up drum 24 rotates at a rotational speed at which the winding yarn speed becomes V1 for a short time, and then rotates at a rotational speed at which the winding yarn speed becomes V2. On the other hand, if the yarn clearer 15 detects a yarn defect or no longer detects the presence of the yarn Y when the rotational speed of the winding drum 24 is the timing at which the winding yarn speed is V2, the winding is not performed. The take-up drum 24 continues to rotate at a rotational speed at which the winding yarn speed becomes V2.

  Then, the storage amount of the yarn Y in the rotary storage unit 71 gradually decreases with time, and when the storage amount of the yarn Y becomes A2 or less at time T3 and the yarn sensor 156 no longer detects the yarn Y, The winding drum 24 continues to wind the yarn Y onto the winding bobbin 22 after decelerating to a rotational speed at which the winding yarn speed becomes V3 slower than V1 and V2.

  At time T4, when the yarn splicing operation is completed, the rotation of the rotation storage unit 71 is resumed and the unwinding speed becomes Vc again. In addition, the storage amount of the yarn Y in the rotary storage unit 71 decreases during the time T2 to T4, and since it is A1 or less at the time T4, the yarn Y is not detected by the upper limit yarn sensor 155, The winding drum 24 rotates at a rotational speed such that the winding yarn speed becomes V2 (<Vc).

  Thereby, the storage amount of the yarn Y in the rotary storage unit 71 increases as time passes, and after the storage amount of the yarn Y reaches A1, the winding yarn speed is V1 as described above. By alternately switching to V2, the storage amount of the yarn Y is maintained at an amount close to A1.

  After that, at time T5, when the yarn clearer 15 detects the yarn defect again or the presence of the yarn Y is not detected again, the rotation of the rotary storage unit 71 is stopped and unraveled as described above. The yarn speed becomes zero, and the winding drum 24 continues winding the yarn Y onto the winding bobbin 22 at a rotational speed such that the winding yarn speed becomes V1 or V2. At time T6, when the storage amount of the yarn Y in the rotary storage unit 71 becomes A2 or less, the rotational speed is reduced to a rotational speed at which the winding yarn speed becomes V3.

  When the yarn splicing operation is completed at time T7, as described above, the rotation of the rotary storage unit 71 is resumed and the unwinding speed becomes Vc again. Rotates at a rotational speed such that becomes V2 (<Vc).

  Here, in the example of FIG. 7, the time from when the yarn Y is no longer detected by the yarn clearer 15 for the second time until the yarn Y is detected again by the yarn clearer 15, that is, the time between times T5 and T7. However, it is longer than the first time, that is, the time between times T2 and T4. This is due to the reason that the unwinding of the yarn Y from the yarn supplying bobbin 21 is stopped, the time required for the yarn joining operation, and the like.

  More specifically, for example, the cause of stopping the unwinding of the yarn Y from the yarn feeding bobbin 21 is that the yarn clearer 15 has detected a yarn defect, or the running yarn Y is The time is shortened when the presence of the yarn Y is no longer detected due to breakage and the number of times the yarn joining operation is repeated until the yarn joining is successful.

  On the other hand, for example, the cause of stopping the unwinding of the yarn Y from the yarn supplying bobbin 21 is that the yarn Y of the yarn supplying bobbin 21 has been lost, and when the yarn supplying bobbin 21 is replaced, If the number of times the yarn joining operation is repeated until the yarn joining is successful, the time becomes longer.

  Further, after time T7, before the amount of storage of the yarn Y in the rotary storage unit 71 becomes larger than A2, at time T8, the yarn clearer 15 detects a yarn defect or the presence of the yarn Y is detected. If not, the rotation storage unit 71 stops rotating and the unwinding speed V becomes zero, as described above. At time T8, since the storage amount of the yarn Y in the rotary storage unit 71 is A2 or less, the yarn Y is not detected by the intermediate yarn sensor 156, and the winding drum 24 immediately has the winding yarn speed V3. Then, the yarn Y is continuously wound around the winding bobbin 22.

  Thereafter, the yarn splicing operation is completed, and thereafter the same operation is continued.

  According to the first embodiment described above, when a yarn defect is detected by the yarn clearer 15 or the presence of the yarn Y is no longer detected, the amount of yarn Y stored in the rotary storage unit 71 is small (A2 Is below), the winding drum 24 is decelerated to reduce the winding yarn speed. Therefore, it is possible to suppress a decrease in the storage amount of the yarn Y in the rotary storage portion 71 due to the winding of the yarn Y around the winding bobbin 22. Accordingly, the unwinding of the yarn Y from the yarn supplying bobbin 21 is stopped, and the winding of the yarn Y onto the winding bobbin 22 is continued for a long time even when the yarn Y is not newly stored in the rotation storage unit 71. It is possible to secure a sufficient time for performing the yarn splicing operation without increasing the size of the rotary storage unit 71. Or when it is going to secure a fixed time for performing a yarn splicing operation | movement, the rotation storage part 71 can be reduced in size.

  Further, even when a yarn defect is detected by the yarn clearer 15 or when the presence of the yarn Y is no longer detected, the yarn Y storage amount in the rotary storage unit 71 is large (when it is larger than A2). ), Since the winding of the yarn Y is continued without lowering the rotational speed of the winding drum 24, that is, the winding speed of the yarn Y onto the winding bobbin 22, the winding of the yarn Y is efficiently performed. Can be taken. In this case, since the winding yarn speed is not changed, energy loss caused by changing the winding yarn speed can be reduced.

  Further, when the yarn clearer 15 detects no yarn defect and the presence of the yarn Y, when the yarn Y storage amount in the rotary storage portion 71 is larger than A1, the winding drum 24 is rotated at a rotational speed such that the winding yarn speed becomes V1 higher than the unwinding yarn speed Vc, thereby reducing the amount of yarn Y stored in the rotary storage portion 71. On the other hand, when the storage amount of the yarn Y in the rotation storage unit 71 is A1 or less, the winding drum 24 is rotated at a rotational speed such that the winding yarn speed is V2 which is lower than Vc which is the unwinding yarn speed. The storage amount of the yarn Y in the rotary storage unit 71 is increased. Therefore, the storage amount of the yarn Y in the rotary storage unit 71 can be maintained at an amount close to A1.

  Here, as a method of adjusting the yarn storage amount in the rotary storage unit 71, unlike the first embodiment, the winding yarn speed of the yarn Y to the winding bobbin 22 is constant, and the yarn in the rotary storage unit 71 is adjusted. It is conceivable to change the rotational speed of the rotary storage section 71, that is, the unwinding speed of the yarn Y from the yarn feeding bobbin 21 in accordance with the storage amount.

  However, when the unwinding speed of the yarn Y from the yarn supplying bobbin 21 is changed, compared to the case where the yarn Y is unwound from the yarn supplying bobbin 21 at the maximum possible unwinding speed Vc. The unwinding speed of the average yarn Y becomes slow.

  Further, in the winding unit 2 of the first embodiment, when the unwinding speed of the yarn Y is greatly increased or decreased in the yarn supplying bobbin 21, the fluctuation causes a problem such as the above-described looping out (sluffing) of the yarn Y. Therefore, it is not preferable to greatly increase or decrease the unwinding speed of the yarn Y from the yarn supplying bobbin 21. When the loop is lost, the number of thread breaks increases, leading to a decrease in production efficiency.

  From the above, the productivity of winding the yarn Y onto the winding bobbin 22 in the winding unit 2 is greater when the unwinding yarn speed is changed than when the winding yarn speed is changed. descend. That is, when the unwinding speed is changed to adjust the storage amount of the yarn Y in the rotary storage portion 71, the productivity of winding the yarn Y onto the winding bobbin 22 becomes particularly low.

  Therefore, in the first embodiment, from the viewpoint of not reducing the unwinding speed of the yarn Y from the yarn supplying bobbin 21 that cannot be greatly increased or decreased, the unwinding speed is normally adjusted from the yarn supplying bobbin 21 to the yarn Y. The rotational storage unit 71 is rotated at a constant rotational speed so that the maximum Vc is obtained in a range where the winding can be unwound, and the rotational speed of the winding drum 24 is determined according to the amount of yarn Y stored in the rotational storage unit 71. That is, by changing the winding yarn speed of the yarn Y to the winding bobbin 22, the storage amount of the yarn Y in the rotary storage unit 71 is adjusted. Thereby, the productivity of winding the yarn Y onto the winding bobbin 22 in the winding unit 2 can be increased.

  When the amount of storage of the yarn Y in the rotation storage unit 71 is smaller than A3, the rotation of the winding drum 24 is stopped regardless of other conditions, and the yarn Y is stored on the winding bobbin 22. Since the winding is stopped, it is possible to prevent the yarn Y stored in the rotary storage unit 71 from being completely lost. Thereby, for example, the winding of the yarn Y is continued until the yarn Y in the rotary storage unit 71 is completely eliminated, and it is possible to prevent the yarn Y on the accumulator 61 side for performing the yarn joining from being lost. .

[Second Embodiment]
Next, a preferred second embodiment of the present invention will be described. In the second embodiment, the configuration of the yarn unwinding / reserving part 209 is different from that of the yarn unwinding / retaining part 9 of the first embodiment, and other parts are substantially the same. The structure of the unwinding storage part 209 is demonstrated and description is abbreviate | omitted suitably about the structure similar to 1st Embodiment.

  As shown in FIG. 9, the yarn unwinding storage unit 209 according to the second embodiment includes an accumulator 261. The accumulator 261 includes six rollers 271, a base material 272, a rotating plate 273, a winding arm 275, a winding arm motor 276, and the like.

  The base material 272 is a substantially circular plate-like body, and is supported on the tip of the output shaft 236 of the winding arm motor 276 via a bearing (not shown). The six rollers 271 (yarn winding portions) are arranged on the upper surface of the base material 272 along the circumference, the lower end thereof is pivotally supported on the upper surface of the base material 272, and the upper end thereof is a rotating plate. 273.

  The rotation plate 273 is rotatable about the axis C2 of the winding arm motor 276. When the rotation plate 273 is rotated, the upper end of the roller 271 supported by the rotation plate 273 is Move in the direction by a distance corresponding to the same central angle. When the upper end of the roller 271 is moved in the circumferential direction by rotating the rotating plate 273, the roller 271 is inclined in the circumferential direction.

  In addition, a rubber ring 281 is disposed on the rotating plate 273 so as to surround the outer peripheral surface thereof, and the yarn Y wound around the roller 271 is interposed between the rotating plate 273 and the rubber ring 281 as described later. It is conveyed toward the winding unit 6 through the gap. At this time, the yarn Y is conveyed between the rotating plate 273 and the rubber ring 281 while being sandwiched between the rotating plate 273 and the fluff of the yarn Y. Further, since the yarn Y is sandwiched between the rotating plate 273 and the rubber ring 281, a balloon is generated in the yarn Y that is unwound from the roller 271 and travels toward the winding unit 6. Can be prevented.

  In the second embodiment, all of the rollers 271 may be driving rollers rotated by the winding arm motor 276, or only some of the rollers 271 are driving rollers, and the other rollers are wound. A driven roller that rotates in conjunction with the movement of the yarn Y may be used.

  The winding arm 275 is for unwinding the yarn Y from the yarn supplying bobbin 21 and guiding the yarn Y to the lower end portion of the roller 271, and has a yarn path 228 in which the yarn Y can travel. It is configured to be rotatable about the axis C2. The winding arm 275 is connected to the outer peripheral surface of the output shaft 236, and reaches the vicinity of the lower end portion of the roller 271 by bypassing the linear portion 241 extending radially outward from the outer peripheral surface of the output shaft 236 and the base material 272. And a curved portion 242.

  An opening 243 that faces the lower end of the roller 271 is formed at the tip of the curved portion 242. With this configuration, the winding arm 275 is rotatable about the axis C2, and by rotating counterclockwise in plan view about the axis C2, as described later, the yarn of the winding arm 275 is rotated. The yarn Y on the yarn feeding section 5 side guided in the path 228 is wound around the lower ends of the six rollers 271.

  The winding arm motor 276 is a position-controllable motor such as a servo motor, a DC brushless motor, or a stepping motor, for example, and is electrically connected to the control unit 109, and the control unit 109 has the winding arm 275. , That is, the winding speed of the yarn Y around the roller 271 is controlled.

  A yarn path 244 communicating with the yarn path 228 of the winding arm 275 is provided below the winding arm motor 276, and the above-described blow-down nozzle 74 (see FIG. 1) is provided below the yarn path 244. A blow-down nozzle 248 similar to that shown in FIG.

  At the lower end of the blow-down nozzle 248, a pull-out sensor 254 capable of detecting that the yarn end of the yarn Y wound around the accumulator 261 is actually pulled out to the yarn joining portion 8 side is provided. The pull-out sensor 254 is electrically connected to the control unit 109, and transmits a pull-out detection signal to the control unit 109 when it detects that the yarn end of the yarn Y has been pulled out to the yarn joining unit 8 side. It has become.

  Furthermore, in the accumulator 261, as shown in FIG. 9, a range where the end (upper end) of the yarn Y wound around the roller 271 on the winding unit 6 side is set to a range R2, and accordingly, Yarn sensors 155 to 157 similar to those of the first embodiment are provided. The yarn sensors 155 to 157 can detect whether or not the accumulated amount of the yarn Y in the accumulator 261 is larger than A1, A2, and A3, respectively.

  Next, the operation of the winding unit according to the second embodiment will be described. Also in the second embodiment, as in the first embodiment, as shown in FIGS. 4 and 5, whether or not a yarn defect is detected and whether or not the yarn Y is detected is detected by the yarn clearer 15. Depending on the heel and the amount of yarn Y stored in the accumulator 261, the unwinding speed of the yarn Y from the yarn feeding bobbin 21, the winding yarn speed of the yarn Y to the winding bobbin 22 and the like are controlled. Perform the yarn splicing operation, etc. in the same procedure.

  However, in the second embodiment, as described above, by rotating the winding arm 275, the yarn Y is unwound from the yarn supplying bobbin 21, and the unwound yarn Y is rotated by the rollers 271 and 271. It winds so that it may straddle the winding auxiliary member 274 arrange | positioned so that it may surround. Here, the winding auxiliary surface 274a, which is the outer peripheral surface of the winding auxiliary member 274, is inclined so that the upper part is located radially inward of the circumference where the roller 271 is disposed. The wound yarn Y moves upward along the winding auxiliary surface 274a while being on the winding auxiliary surface 274a, is separated from the winding auxiliary surface 274a, and is wound only on the roller 271. After that, it is moved upward by being conveyed to the inclined roller 271. As a result, the yarn Y is wound around the six rollers 271 along the direction of the axis C2.

  In the second embodiment, it is determined whether or not the winding arm 275 is rotating in S101 of FIG. 4, the rotation of the winding arm 275 is stopped in S104, and the rotation of the winding arm 275 is restarted in S106. Let In the second embodiment, the yarn Y is pulled out by rotating the winding arm 275 in the direction opposite to that when the yarn Y is wound at the time of yarn joining in S303 of FIG.

  Next, modified examples in which various changes are made to the first and second embodiments will be described. However, those having the same configurations as those of the first and second embodiments will be omitted as appropriate.

  In the first and second embodiments, the yarn clearer 15 detects the presence or absence of the yarn Y, thereby detecting the traveling of the yarn Y between the yarn supplying unit 5 and the accumulators 61 and 261. Is not limited. For example, a sensor (speed detection unit) for detecting the speed of the traveling yarn Y between the yarn supplying unit 5 and the accumulators 61 and 261, or a sensor (traveling length) for detecting the length of the traveling yarn Y. And a travel of the yarn Y may be detected using these sensors.

  When the yarn Y is running normally, the speed and length of the yarn Y detected by the sensor are within a predetermined range, whereas when the running yarn Y is cut, a yarn defect is detected. When the yarn Y is cut by the cutter 16 or when the yarn Y of the yarn supplying bobbin 21 is exhausted, the speed and length of the yarn Y detected by the sensor decreases and finally becomes zero. That is, since it deviates from the predetermined range, the traveling of the yarn Y can be detected depending on whether the speed and length of the yarn Y detected by the sensor are within the predetermined range.

  In the first and second embodiments, when the yarn clearer 15 detects a yarn defect or no longer detects the presence of the yarn Y, when the yarn Y storage amount is greater than A2, The winding of the yarn Y onto the winding bobbin 22 is continued while maintaining the winding yarn speed up to that time without reducing the winding yarn speed, but this is not restrictive. For example, in one modified example (modified example 1), the intermediate yarn sensor 156 (see FIG. 2) for detecting whether or not the storage amount of the yarn Y is larger than A2 is not provided, and is shown in FIG. As described above, when the yarn Y is cut by the cutter 16 (S202: YES), or when the yarn Y is no longer detected by the yarn clearer 15 (S203: NO), the yarn Y is uniformly stored regardless of the storage amount. The winding yarn speed is reduced to V3 (S401).

  In this case, in a state where the unwinding of the yarn Y from the yarn supplying bobbin 21 is stopped, when the amount of storage of the yarn Y is larger than A2, the winding of the yarn Y compared to the first embodiment is performed. The efficiency will be worse. However, in this case, the winding of the yarn Y can be continued in a state where the unwinding of the yarn Y from the yarn feeding bobbin 21 is stopped, as compared with the case of the first and second embodiments. The time can be lengthened, and the time for performing the yarn splicing operation can be increased. Alternatively, in the same way as in the first and second embodiments, when the time for performing the yarn splicing operation is to be ensured, the rotation storage unit 71 and the roller 271 are further reduced in size than the first and second embodiments. be able to.

  Furthermore, when the yarn defect is not detected (S202: NO) and the presence of the yarn Y is detected, that is, only during normal yarn winding, the winding yarn speed is controlled, and the yarn defect is detected. Is detected (S202: YES) or when the presence of the yarn Y is no longer detected (S203: NO), the yarn Y is not reduced at all times, and the yarn Y is always kept at the same winding yarn speed as before. The winding may be continued. However, in this case, at the time of normal winding of the yarn, the productivity of winding the yarn can be increased. However, in order to secure a sufficient time for performing the yarn joining operation, the rotary storage unit 71 Need to be enlarged.

  In the first and second embodiments, when the yarn traveling is detected and the amount of yarn Y stored in the accumulators 61 and 261 is larger than A1, the winding yarn speed is the unwinding yarn speed. In the accumulators 61 and 261, V1 is set to be faster than a certain Vc, and when the storage amount of the yarn Y is A1 or less, the winding yarn speed is set to a uniform V2 lower than the unwinding speed Vc. Although the storage amount of the yarn Y is adjusted, the control for adjusting the storage amount of the yarn Y is not limited to this.

  For example, when the storage amount of the yarn Y in the accumulators 61 and 261 is small (for example, when it is equal to or less than A2), such as immediately after the start of winding the yarn Y by the winding unit 2 or immediately after the completion of the yarn joining, the winding is performed. The take-up yarn speed may be set to a speed slower than V2, and the take-up yarn speed may be set to V2 after the storage amount of the yarn Y exceeds A2. In this way, when the storage amount of the yarn Y in the accumulators 61 and 261 is small, the storage amount of the yarn Y can be quickly increased.

  Further, instead of the yarn sensors 155 to 157, a sensor capable of continuously detecting the storage amount of the yarn Y in the accumulators 61 and 261 is provided, and the winding yarn speed increases as the detected storage amount of the yarn Y increases. It is also possible to adjust the storage amount of the yarn Y by performing control so as to be.

  Furthermore, during normal winding of the yarn, the winding yarn speed is not controlled as described above, and a yarn defect is detected (S202: YES), or the presence of the yarn Y is no longer detected. The winding yarn speed may be controlled only in (S203: NO). However, in this case, it is possible to secure a sufficient time for performing the yarn splicing operation without increasing the size of the rotary storage unit 71. However, when winding the normal yarn, the unwinding yarn speed is changed. It is necessary, and the productivity of winding the yarn is lowered.

  In the first embodiment, by rotating the rotary storage unit 71, the yarn Y is unwound from the yarn supplying bobbin 21, and the unwound yarn Y is wound around the rotary storage unit 71 and stored. In the second embodiment, by rotating the winding arm 275, the yarn Y is unwound from the yarn supplying bobbin 21, and the unwound yarn Y is wound around a plurality of rollers 271 arranged in the circumferential direction. However, the configuration for unwinding the yarn Y from the yarn supplying bobbin 21 and the configuration for storing the unwinded yarn Y are not limited to this.

  The configuration for unwinding the yarn Y from the yarn feeding bobbin 21 is dedicated, for example, separately from the configuration for winding the yarn Y in the vicinity of the yarn feeding unit 5 (the rotation storage unit 71 and the winding arm 275). May be provided.

  As for the configuration for storing the yarn Y, the yarn Y unwound from the yarn supplying bobbin 21 is wound around a substantially cylindrical tubular body that does not rotate by the winding arm 275. It may be stored by being wound around a member other than the portion 71 and the roller 271. Furthermore, the yarn unwinding storage unit is not limited to the one provided with the yarn winding unit for winding the yarn Y. For example, a case in which a space for storing the yarn is formed is provided. The yarn Y unwound from the yarn feeding bobbin 21 may be introduced into this space and stored in this space.

  In the above-described embodiment, in the yarn joining operation, the lower yarn guide pipe 25 and the upper yarn guide pipe 26 are used to pass the yarn Y on the accumulator side and the yarn Y on the yarn feeding bobbin 21 side to the yarn joining device 14, respectively. Although set, it is not limited to this.

  In one modification (Modification 2), as shown in FIG. 11, in the first embodiment, the lower thread guide pipe 25, the upper thread guide pipe 26, the thread path forming member 75, and the like are not provided. An upper thread catching device 301, a guide member 302, a lower thread blowing device 303, and a yarn trap 304 are provided. In FIG. 11, a magazine type bobbin yarn feeding device 305 is illustrated as a bobbin feeding device for feeding the yarn feeding bobbin 21.

  The upper thread catcher 301 is disposed immediately above the first tensor 41 and is connected to a negative pressure source (not shown). The guide member 302 is a substantially cylindrical member, and extends between the upper yarn catching device 301 and the blow-down nozzle 74 so as to bypass the yarn path of the yarn Y during normal winding. Further, the guide member 302 is formed with a slit 302a at the left end in the drawing over its entire length.

  The lower thread blowing device 303 is disposed immediately below the first tensor 41. The lower thread blowing device 303 is connected to a pressure air source (not shown) and generates an upward air flow. The yarn trap 304 is disposed between the yarn joining device 14 and the yarn clearer 15 so as to be able to suck the yarn Y, and is connected to a negative pressure source (not shown).

  As in the first embodiment, when the running yarn is cut, when a yarn defect is detected, when the yarn Y of the yarn supplying bobbin 21 is lost and the yarn supplying bobbin 21 is replaced, etc. When an air flow is generated in the blow-down nozzle 74, the yarn end of the yarn Y wound around the rotation storage unit 71 is sucked and blown off from the blow-down nozzle 74 toward the guide member 302. The yarn end blown off by the guide member 302 is guided to a position facing the upper yarn catching device 301 along the wall surface on the right side of the guide member 302 in the drawing, as indicated by a one-dot chain line. The upper thread capturing device 301 captures the guided thread end by sucking it. Then, when the yarn end is sucked by the upper yarn catching device 301, the yarn Y located in the guide member 302 is pulled, is taken out of the guide member 302 from the slit 302a, and is set in the yarn joining device 14. .

  On the other hand, the lower yarn blowing device 303 blows up the yarn Y on the yarn supplying bobbin 21 side upward, and the yarn trap 304 sucks and captures the yarn blown up by the lower yarn blowing device 303. When the yarn Y on the yarn feeding bobbin 21 side is sucked by the lower yarn blowing device 303, the yarn Y is pulled and set in the yarn joining device 14.

  In the second modification, as described above, the yarn Y on the accumulator 61 side and the yarn Y on the yarn feeding bobbin 21 side are set in the yarn joining device 14, and then, similarly to the first embodiment described above, the yarn The splicing device 14 performs the yarn splicing.

  Further, since the guide member 302 extends so as to bypass the yarn path of the yarn Y during normal winding, the yarn Y does not contact the guide member 302 during normal winding, and the yarn Y It is possible to prevent the quality from deteriorating.

  In this case, since the yarn end sucked from the rotary reservoir 71 by the blow-down nozzle 74 is guided to the upper yarn guide device 301 by the guide member 302, the direction, length, and shape of the guide member 302 are configured. By changing the above, the positional relationship between the blow-down nozzle 74 and the upper thread guide device 301 can be changed relatively freely. That is, the degree of freedom in layout of the blow-down nozzle 74 and the upper thread guide device 301 is increased.

  Further, when the yarn Y on the accumulator 61 side and the yarn Y on the yarn feeding bobbin 21 side are set in the yarn joining device 14 as described above, the first implementation is performed to set the yarn Y in the yarn joining device 14. Since the mechanical operation such as turning of the lower thread guide pipe 25 and the upper thread guide pipe 26 is not involved, the yarn Y can be quickly set in the yarn joining device 14, and thus the yarn joining operation is completed. It is possible to reduce the time required for

  In the above-described embodiment, the yarn Y wound around the winding bobbin 22 is traversed by providing the traverse groove 27 in the winding drum 24. However, the present invention is not limited to this, and the winding bobbin 22 is wound up. The yarn Y may be traversed by an arm-type traverse device that reciprocates left and right in a state where the yarn Y immediately before being applied is hung.

DESCRIPTION OF SYMBOLS 2 Winding unit 6 Winding part 9 Thread unwinding storage part 14 Yarn splicing device 15 Yarn clearer 21 Yarn supply bobbin 60 Yarn supply bobbin support part 61 Accumulator 71 Rotation storage drum 155-157 Yarn sensor 209 Thread unwinding storage part 261 Accumulator 271 Roller 275 Winding arm

Claims (12)

  1. A yarn feeding bobbin support for supporting the yarn feeding bobbin;
    A yarn unwinding storage unit for unwinding the yarn from the yarn supplying bobbin supported by the yarn supplying bobbin support unit and storing the unwound yarn;
    A winding unit for winding the yarn stored in the yarn unwinding storage unit into a package;
    A storage amount detection unit for detecting a storage amount of the yarn in the yarn unwinding storage unit;
    A yarn traveling detection unit that detects the traveling of the yarn between the yarn feeding bobbin support unit and the yarn unwinding storage unit;
    A control unit that controls a winding yarn speed of the winding unit according to detection results of the storage amount detection unit and the yarn traveling detection unit,
    The controller is
    When the traveling of the yarn is detected by the yarn traveling detection unit,
    Controlling the yarn unwinding storage unit so that the unwinding speed, which is the speed of the yarn unwound from the yarn feeding bobbin by the yarn unwinding storage unit, becomes a constant unwinding speed,
    Controlling the winding unit such that the winding yarn speed becomes a winding yarn speed determined based on the yarn storage amount detected by the storage amount detection unit;
    When the traveling of the yarn is detected by the yarn traveling detection unit,
    When the yarn storage amount detected by the storage amount detection unit is larger than a predetermined upper limit storage amount, the winding yarn speed V1 is higher than the yarn unwinding speed in the unwinding storage unit. The winding part is controlled so that
    When the yarn storage amount detected by the storage amount detection unit is equal to or less than the upper limit storage amount, the winding unit is controlled so that the winding yarn speed V2 is lower than the unwinding yarn speed. Characteristic yarn winding device.
  2.   2. The yarn winding device according to claim 1, further comprising a yarn joining portion that performs yarn joining between the yarn on the yarn feeding bobbin side and the yarn on the yarn unwinding storage portion side.
  3.   The yarn traveling detection unit is configured by a yarn presence / absence detecting unit that detects the presence / absence of a yarn between the yarn feeding bobbin support unit and the yarn unwinding storage unit. The yarn winding device described.
  4.   3. The yarn traveling detection unit includes a yarn defect detection unit that detects a yarn defect between the yarn feeding bobbin support unit and the yarn unwinding storage unit. Yarn winding device.
  5.   The yarn winding device according to claim 1, wherein the yarn traveling detection unit includes a traveling speed detecting unit that detects a traveling speed of the yarn.
  6.   The yarn winding device according to claim 1 or 2, wherein the yarn traveling detection unit is configured by traveling length detection means for detecting a traveling length of the yarn.
  7. The yarn unwinding storage unit includes a yarn winding unit in which a yarn is wound from one end to the other end along one direction,
    The storage amount detection unit is disposed so as to face any part of the yarn winding unit, and includes at least one sensor that detects whether a yarn is present in the part of the yarn winding unit. The yarn winding device according to claim 1, wherein the yarn winding device is provided.
  8. The controller is
    Controlling the unwinding storage unit so that the unwinding operation of the yarn is stopped when the traveling of the yarn is not detected by the yarn traveling detection unit;
    The yarn winding unit according to any one of claims 1 to 7 , wherein the winding unit is controlled so that the winding yarn speed V3 is slower than that when the yarn traveling detection unit detects the traveling of the yarn. Taking device.
  9. The controller is
    When the yarn running is not detected by the yarn running detector,
    Winding yarn speed that is slower than when the yarn traveling is detected by the yarn traveling detecting unit only when the yarn accumulated amount detected by the accumulated amount detecting unit is equal to or less than a predetermined intermediate stored amount Control the winding unit so as to be V3,
    When the yarn storage amount detected by the storage amount detection unit is larger than the intermediate storage amount, the winding yarn speeds V1 and V2 that are the same as those when the yarn traveling detection unit detects the yarn traveling and The yarn winding device according to any one of claims 1 to 8 , wherein the winding unit is controlled.
  10. The controller is configured to determine whether the yarn travel is detected by the yarn travel detection unit when the yarn storage amount detected by the storage amount detection unit is equal to or less than a predetermined lower limit storage amount. The yarn winding device according to any one of claims 1 to 9 , wherein the winding unit is controlled so that winding of the yarn is stopped.
  11. Unwind the yarn from the yarn feeding bobbin,
    The unwound yarn is stored in the yarn unwinding storage section,
    A yarn winding method for winding a yarn stored in a yarn unwinding storage unit into a package,
    The yarn traveling between the yarn feeding bobbin and the yarn unwinding / reserving portion is detected, and the amount of yarn stored in the yarn unwinding / reserving portion is detected, and the yarn is wound at the winding yarn speed corresponding to the detection results. Ri the winding as a package,
    When traveling of the yarn is detected,
    When the detected yarn storage amount is larger than a predetermined upper limit storage amount, the yarn unwinding speed is the speed of the yarn unwound from the yarn feeding bobbin by the yarn unwinding storage unit. Winds the yarn at a fast winding speed V1,
    A yarn winding method comprising winding a yarn at a winding yarn speed V2 slower than a unwinding yarn speed when the detected yarn storage amount is equal to or less than the upper limit storage amount .
  12. When yarn traveling is not detected,
    Stop the yarn unwinding operation,
    The yarn winding method according to claim 11 , wherein the yarn is wound at a winding yarn speed V3 that is slower than when the yarn traveling is detected.
JP2011061354A 2011-03-18 2011-03-18 Yarn winding device and yarn winding method Expired - Fee Related JP5884280B2 (en)

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JP2011061354A JP5884280B2 (en) 2011-03-18 2011-03-18 Yarn winding device and yarn winding method
EP12760494.0A EP2687468B1 (en) 2011-03-18 2012-02-15 Yarn winding device and yarn winding method
CN201280013963.4A CN103443005B (en) 2011-03-18 2012-02-15 Yarn take-up device and reel for yarn winding method
PCT/JP2012/053447 WO2012127939A1 (en) 2011-03-18 2012-02-15 Yarn winding device and yarn winding method

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JP2015000777A (en) 2013-06-13 2015-01-05 村田機械株式会社 Yarn winding machine
JP2016013892A (en) * 2014-07-02 2016-01-28 村田機械株式会社 Yarn winder
JP2016016959A (en) * 2014-07-10 2016-02-01 村田機械株式会社 Yarn winder and yarn winding method
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EP2687468A1 (en) 2014-01-22
JP2012197135A (en) 2012-10-18
CN103443005A (en) 2013-12-11
WO2012127939A1 (en) 2012-09-27
EP2687468B1 (en) 2017-09-06
CN103443005B (en) 2016-04-13

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