WO2012127939A1 - 糸巻取装置及び糸巻取方法 - Google Patents

糸巻取装置及び糸巻取方法 Download PDF

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Publication number
WO2012127939A1
WO2012127939A1 PCT/JP2012/053447 JP2012053447W WO2012127939A1 WO 2012127939 A1 WO2012127939 A1 WO 2012127939A1 JP 2012053447 W JP2012053447 W JP 2012053447W WO 2012127939 A1 WO2012127939 A1 WO 2012127939A1
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WO
WIPO (PCT)
Prior art keywords
yarn
winding
unwinding
unit
speed
Prior art date
Application number
PCT/JP2012/053447
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
善太 曽根
Original Assignee
村田機械株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 村田機械株式会社 filed Critical 村田機械株式会社
Priority to CN201280013963.4A priority Critical patent/CN103443005B/zh
Priority to EP12760494.0A priority patent/EP2687468B1/de
Publication of WO2012127939A1 publication Critical patent/WO2012127939A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/74—Driving arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • B65H61/005—Applications of devices for metering predetermined lengths of running material for measuring speed of running yarns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a yarn winding device and a yarn winding method for winding a yarn unwound from a yarn supplying 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 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.
  • the yarn unwinding storage unit that is, the yarn unwinding from the yarn feeding bobbin.
  • 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.
  • 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
  • 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.
  • the yarn joining operation performed for the yarn joining at the yarn joining portion may not succeed once.
  • the yarn joining operation is performed by repeating the yarn joining operation.
  • the amount of yarn stored in the yarn unwinding storage section needs to be at least larger than 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.
  • a yarn winding device includes a yarn supplying bobbin supporting portion that supports a yarn supplying bobbin, and a yarn that unwinds the yarn from the yarn supplying bobbin supported by the yarn supplying bobbin supporting portion and stores the unwound yarn.
  • a unwinding storage unit a winding unit that winds and stores the yarn stored in the yarn unwinding storage unit, a storage amount detection unit that detects a storage amount of yarn in the yarn unwinding storage unit, and A yarn travel detection unit that detects the travel of the yarn between the yarn feeding bobbin support unit and the yarn unwinding storage unit, and the winding unit according to the detection results of the storage amount detection unit and the yarn travel detection unit
  • a control unit for controlling the winding yarn speed of.
  • the yarn winding method unwinds a yarn from a yarn supplying bobbin, stores the unwound yarn in a yarn unwinding storage unit, and winds the yarn stored in the yarn unwinding storage unit to form a package.
  • a yarn winding method that detects 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 according to the detection results The yarn is wound as a package at a winding yarn speed.
  • the winding yarn speed is changed according to the detection result of the yarn storage amount in the yarn unwinding storage unit.
  • 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.
  • 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.
  • the yarn winding device is further characterized by further comprising a yarn joining portion for joining the yarn on the yarn feeding bobbin side and the yarn on the yarn unwinding storage portion side.
  • winding of the yarn can be continued by winding the yarn stored in the yarn unwinding storage portion at the winding portion even while the yarn joining is being performed at the yarn joining portion. 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.
  • the yarn traveling detection unit includes a yarn presence / absence detection unit that detects the presence / absence of a yarn between the yarn feeding bobbin support unit and the yarn unwinding storage unit.
  • the yarn traveling can be detected by detecting whether or not a yarn is present between the yarn feeding bobbin support portion and the yarn unwinding storage portion by the yarn presence / absence detecting means.
  • the yarn travel detection unit is configured by a yarn defect detection unit that detects a yarn defect between the yarn feeding bobbin support unit and the yarn unwinding storage unit.
  • the yarn defect detection unit detects whether the yarn defect is detected. By doing so, the running of the yarn can be detected.
  • the yarn winding device is characterized in that the yarn traveling detection unit includes a traveling speed detecting means for detecting a traveling speed of the yarn.
  • the traveling of the yarn can be detected based on the traveling speed of the yarn detected by the speed detection unit.
  • the yarn winding device is characterized in that the yarn traveling detection unit includes traveling length detection means for detecting the traveling length of the yarn.
  • the present invention it is possible to detect the traveling of the yarn based on the length of the traveling yarn detected by the traveling length detection unit.
  • 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, and the storage amount detection unit includes It is disposed so as to face any part of the thread winding part, and is provided with at least one sensor for detecting whether or not a thread is present in the part of the thread winding part. .
  • the storage amount detection unit can be configured by one or a plurality of sensors facing the yarn winding unit.
  • the control unit when the yarn traveling is detected by the yarn traveling detection unit, the control unit has a constant unwinding speed at which the unwinding speed in the yarn unwinding storage unit is constant.
  • the yarn unwinding and accumulating portion is controlled so that the winding yarn speed becomes the winding yarn speed determined based on the yarn storage amount detected by the storage amount detecting portion.
  • the winding unit is controlled.
  • the yarn 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 unwound from the yarn supplying bobbin at a constant unwinding yarn speed.
  • the yarn storage amount in the yarn unwinding storage unit can be made appropriate. .
  • the control unit when the yarn traveling detection is detected by the yarn traveling detection unit, the control unit has a predetermined yarn storage amount detected by the storage amount detection unit.
  • the winding unit When the amount is larger than the upper limit storage amount, the winding unit is controlled so that the winding yarn speed V1 is higher than the yarn unwinding speed in the yarn unwinding storage unit, and the storage amount detection unit
  • the winding unit When the detected yarn storage amount is equal to or less than the upper limit storage amount, the winding unit is controlled such that the winding yarn speed V2 is lower than the unwinding yarn speed.
  • the yarn unwinding storage unit when the yarn traveling is detected and the detected yarn storage amount is larger than a predetermined upper limit storage amount, the yarn unwinding storage unit When the yarn is wound at a winding yarn speed V1 that is faster than the yarn unwinding speed at, and the detected yarn storage amount is equal to or less than the upper limit storage amount, the winding yarn speed is slower than the unwinding yarn speed.
  • the yarn is wound by V2.
  • 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 completely discharged from the yarn unwinding storage unit. It can be prevented from disappearing.
  • control unit controls 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 winding unit is controlled such that the winding yarn speed V3 is slower than when the yarn traveling detection unit detects the traveling of the yarn.
  • the yarn winding method according to the present invention stops the yarn unwinding operation when yarn traveling is not detected, and winds the yarn at a winding yarn speed V3 slower than when yarn traveling is detected. It is characterized by.
  • the yarn unwinding storage unit 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.
  • the control unit detects a yarn storage amount detected by the storage amount detection unit as a predetermined intermediate storage amount. Only in the following cases, the winding unit is controlled so that the winding yarn speed V3 is lower than when the yarn traveling is detected by the yarn traveling detection unit, and is detected by the storage amount detection unit. When the yarn storage amount is larger than the intermediate storage amount, the winding unit is set so that the winding yarn speeds V1 and V2 are the same as when the yarn traveling detection unit detects the yarn traveling. It is characterized by controlling.
  • the yarn unwinding storage unit 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)
  • the yarn 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.
  • control unit causes the yarn travel detection unit to run the yarn when the yarn storage amount detected by the storage amount detection unit is equal to or less than a predetermined lower limit storage amount. Regardless of whether or not is detected, the winding unit is controlled so that the winding of the yarn is stopped.
  • the winding of the yarn is stopped, so that the yarn is completely removed from the yarn unwinding storage portion. Can be prevented.
  • 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.
  • the winding yarn speed is changed according to the detection result of the yarn storage amount in the yarn unwinding storage unit.
  • 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.
  • 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.
  • FIG. 6 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
  • the automatic winder 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 section 5 includes a yarn supplying bobbin supporting section 60 for supporting the yarn supplying bobbin 21, the 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.
  • 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 gives a predetermined tension to the traveling yarn Y.
  • this 1st tensor 41 the gate type thing which arrange
  • 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, whereby the package 30 is brought into contact with or separated from the take-up drum 24.
  • 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 driven to rotate.
  • 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 (to be 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.
  • the second tensor 42 may be a gate type in which movable comb teeth are arranged with respect to fixed comb teeth.
  • a waxing device 17 for waxing the running yarn Y is disposed on the downstream side of the second tensor 42.
  • 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.
  • 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 section 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 are spliced.
  • a mechanical type, a type using a fluid such as compressed air, or the like can be used as the yarn splicing device 14.
  • 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.
  • 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.
  • 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.
  • 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.
  • the yarn Y is unwound from the yarn supplying bobbin 21, and the unwinding is performed.
  • the yarn Y is stored in the rotation storage unit 71.
  • 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.
  • 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 rotation storage unit 71.
  • the annular member 81 rotates integrally with the rotation storage part 71.
  • 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 motor capable of position control, such as a DC brushless motor, a stepping motor, or a servo motor, and rotates the rotary storage unit 71 in both directions.
  • 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 yarn guide member 73 is a pipe extending linearly, and is arranged so that the upper left end portion in FIG. 2 faces the taper 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 amount of yarn Y stored.
  • the amount of storage 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.
  • 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).
  • the yarn sensors 155 to 157 detect the presence of the yarn Y at the opposed positions, the yarn amount storage amount of the yarn Y is larger than that of A1, A2, and A3 in the control unit 109, respectively.
  • the signal which shows is transmitted.
  • 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).
  • the yarn sensors 155 to 157 are used to store the yarn Y in the range R1 in the rotation 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
  • 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.
  • the yarn Y does not overflow from the rotary storage unit 71.
  • 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) and the like for temporarily storing data during program execution are provided.
  • 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 rotational 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 side 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.
  • 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.
  • the operator pulls out the yarn Y from the opening of the yarn guide member 73 facing the rotation storage portion 71 and winds the yarn Y around the rotation storage portion 71, for example, about 5 to 20 times, and further, 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 unwinding speed indicates the speed of the yarn Y that is unwound from the yarn supplying bobbin by the rotary storage unit 71.
  • 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.
  • the winding yarn speed indicates the speed of the yarn Y wound around the package by the rotation of the winding drum 24.
  • 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.
  • 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).
  • 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.
  • 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.
  • the winding yarn speed is higher than the above-described V1 and V2.
  • 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.
  • the procedure of the yarn joining operation in S303 will be described.
  • 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.
  • 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.
  • the rotating 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.
  • the lower thread guide pipe 25 sucks and captures the thread end of the thread Y existing around the yarn feeler 37 and guides the thread Y to 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.
  • the yarn joining operation by the yarn joining device 14 may not be successful once, and when the yarn joining operation fails, the yarn joining operation is repeatedly executed a plurality of times.
  • 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.
  • the yarn Y is not detected by the upper limit yarn sensor 155 because the amount of yarn Y stored in the rotary 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIGS. 8A and 8B are enlarged views of the vicinity of portions between time T1 and time T2 in FIGS. 7A and 7C, respectively.
  • 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.
  • 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, It will decrease.
  • 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.
  • the rotary storage unit 71 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.
  • 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.
  • 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.
  • the rotation of the rotary storage unit 71 is restarted and the unwinding yarn speed becomes Vc again.
  • the storage amount of the yarn Y in the rotary storage unit 71 decreases during the time T2 to T4, and at the time T4 is equal to or less than A1, so the upper limit yarn sensor 155 does not detect the yarn Y,
  • the winding drum 24 rotates at a rotational speed such that the winding yarn speed becomes V2 ( ⁇ Vc).
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the rotation storage part 71 can be reduced in size.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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. .
  • 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
  • the yarn unwinding storage unit 209 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 at the tip of the output shaft 236 of the winding arm motor 276 via a bearing (not shown).
  • the six rollers 271 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.
  • 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.
  • the roller 271 is inclined in the circumferential direction.
  • 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.
  • 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 facing the lower end of the roller 271 is formed at the tip of the curved portion 242.
  • 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 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.
  • 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, Similar to the first embodiment, thread sensors 155 to 157 are provided.
  • the yarn sensors 155 to 157 can detect whether or not the storage amount of the yarn Y in the accumulator 261 is larger than A1, A2, and A3, respectively.
  • 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
  • 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.
  • the rotation of the winding arm 275 is stopped in S104, and the rotation of the winding arm 275 is restarted in S106.
  • 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.
  • 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.
  • a sensor speed detection unit
  • a sensor traveling length
  • a travel of the yarn Y may be detected using these sensors.
  • 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.
  • 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.
  • 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.
  • the winding of the yarn Y 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.
  • the winding yarn speed is the unwinding yarn speed.
  • V1 is set to be faster than a certain Vc
  • the winding yarn speed is set to a uniform V2 lower than the unwinding speed Vc.
  • 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 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.
  • a sensor capable of continuously detecting the amount of storage of the yarn Y in the accumulators 61 and 261 is provided, and the winding yarn speed increases as the amount of storage of the detected yarn Y increases. It is also possible to adjust the storage amount of the yarn Y by performing control so as to be.
  • 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.
  • the unwinding yarn speed is changed. It is necessary, and the productivity of winding the yarn is lowered.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the yarn joining device 14 is not limited to this.
  • Modification 2 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.
  • 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 catching device 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).
  • 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.
  • the lower yarn blowing device 303 blows up the yarn Y on the yarn feeding bobbin 21 side upward, and the yarn trap 304 sucks and captures the yarn blown up by the lower yarn blowing device 303.
  • 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.
  • 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.
  • 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.
  • the direction, length, and shape of the guide member 302 are configured.
  • 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.
  • 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
  • the yarn Y wound around the winding bobbin 22 is traversed by providing the traverse groove 27 in the winding drum 24.
  • 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.

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PCT/JP2012/053447 2011-03-18 2012-02-15 糸巻取装置及び糸巻取方法 WO2012127939A1 (ja)

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EP3000756A1 (de) 2014-08-28 2016-03-30 Murata Machinery, Ltd. Garnwickelvorrichtung und textilmaschine
EP3009387A1 (de) 2014-10-17 2016-04-20 Murata Machinery, Ltd. Garnaufwicklungsvorrichtung und paketabbremsverfahren
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JP2016013892A (ja) * 2014-07-02 2016-01-28 村田機械株式会社 糸巻取装置
JP2016016959A (ja) * 2014-07-10 2016-02-01 村田機械株式会社 糸巻取機及び糸巻取方法
DE102016106107A1 (de) * 2016-04-04 2017-10-05 Rieter Ingolstadt Gmbh Verfahren zum Betreiben einer Textilmaschine und Textilmaschine
JP2019026981A (ja) * 2017-08-02 2019-02-21 村田機械株式会社 空気紡績機及び表示制御方法
JP2019104596A (ja) * 2017-12-12 2019-06-27 村田機械株式会社 糸巻取機及び糸巻取方法
JP2019123590A (ja) * 2018-01-16 2019-07-25 村田機械株式会社 糸巻取機

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