EP3312116B1 - Dispositif de bobinage de fil et procédé d'arrêt de rotation de paquet - Google Patents

Dispositif de bobinage de fil et procédé d'arrêt de rotation de paquet Download PDF

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Publication number
EP3312116B1
EP3312116B1 EP17192831.0A EP17192831A EP3312116B1 EP 3312116 B1 EP3312116 B1 EP 3312116B1 EP 17192831 A EP17192831 A EP 17192831A EP 3312116 B1 EP3312116 B1 EP 3312116B1
Authority
EP
European Patent Office
Prior art keywords
yarn
package
winding
section
traversing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17192831.0A
Other languages
German (de)
English (en)
Other versions
EP3312116A1 (fr
Inventor
Hirayuki Kawabata
Shinji Shirai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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Filing date
Publication date
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Publication of EP3312116A1 publication Critical patent/EP3312116A1/fr
Application granted granted Critical
Publication of EP3312116B1 publication Critical patent/EP3312116B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • B65H54/26—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores having one or more servicing units moving along a plurality of fixed winding units
    • 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
    • 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
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping 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
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/12—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • 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
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0405—Arrangements for removing completed take-up packages or for loading an empty core
    • 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 including a winding unit in which a yarn accumulating device is arranged between a yarn supplying section and a winding section, and a package rotation stopping method implemented in the yarn winding device.
  • a yarn winding device including a winding unit that pulls a yarn from a yarn supplying section and winds the yarn on a winding section to form a package is known in the art.
  • a yarn accumulating device for temporarily accumulating a yarn is arranged between a yarn supplying section and a winding section of the winding unit.
  • rotation of the package is stopped while the yarn is still continuous between the package and the yarn accumulating device. Then, the yarn between the package and the yarn accumulating device is cut with a clamp cutter of the doffing device, and formation of a new package is performed after the yarn from the yarn accumulating device is fixed to a new winding tube.
  • the clamp cutter of the doffing device is attached to an arm that can be moved by a certain extent by way of expansion, contraction, and pivoting; however, the range in which the clamp cutter can hold or cut the yarn is limited.
  • a stopping position of the yarn in the traversing area when the traversing drum is stopped varies every time. If the stopping position of the yarn is out of the range in which the clamp cutter can hold and cut the yarn, the doffing cannot be performed.
  • a dedicated positioning member that can position the yarn at a position where the clamp cutter can cut and hold the yarn is provided.
  • the positioning member has a width that is slightly longer than a traversing width.
  • a yarn winding device includes a winding unit that pulls a yarn from a yarn supplying section and winds the yarn on a winding tub in a winding section to form a package; and a doffing device that doffs from the winding unit a package in which the winding has been completed.
  • the winding unit includes a traversing drum that rotates while being in contact with the package and traverses the yarn while rotating the package; a yarn accumulating device arranged between the yarn supplying section and the winding section in a yarn travelling direction for temporarily accumulating the yarn; a yarn detecting section capable of detecting the yarn traversed by the traversing drum; and a controlling section that controls the traversing drum.
  • the doffing device includes a yarn holding and cutting section capable of holding and cutting the yarn when the yarn between the package and the yarn accumulating device is at a predetermined position in a traversing area.
  • the controlling section controls, when the winding of the yarn is completed, a rotation of the traversing drum based on an output of the yarn detecting section such that, when the yarn between the package and the yarn accumulating device is continuous, to stop the rotation of the package so that the yarn between the package and the yarn accumulating device stops at the predetermined position.
  • a package rotation stopping method for stopping rotation of a package is implemented in a yarn winding device.
  • the yarn winding device includes a winding unit that, after temporarily accumulating a yarn pulled from a yarn supplying section in a yarn accumulating device, forms a package by winding the yarn on a winding tube while traversing the yarn with a traversing drum that rotates while being in contact with the package; and a doffing device that doffs from the winding unit a package in which the winding has been completed and including a yarn holding and cutting section capable of holding and cutting the yarn when the yarn between the package and the yarn accumulating device is at a predetermined position in a traversing area.
  • the package rotation stopping method includes a decelerating step of decelerating, when the winding of the yarn is completed, the traversing drum while the yarn between the package and the yarn accumulating device is continuous thereby decelerating the package; a yarn detecting step of detecting the yarn traversed by the traversing drum; and a yarn positioning step of controlling the traversing drum based on a detection result of the yarn obtained at the yarn detecting step to stop the rotation of the package so that the yarn between the package and the yarn accumulating device stops at the predetermined position.
  • a yarn winding device includes a winding unit that pulls a yarn from a yarn supplying section and winds the yarn on a winding tube in a winding section to form a package; and a doffing device that doffs from the winding unit a package in which the winding has been completed.
  • the winding unit includes a traversing drum that rotates while being in contact with the package and traverses the yarn while rotating the package; and a yarn accumulating device arranged between the yarn supplying section and the winding section in a yarn travelling direction for temporarily accumulating the yarn.
  • the winding unit when the winding of the yarn is completed, stops the rotation of the package while the yarn between the package and the yarn accumulating device is continuous.
  • the doffing device includes a yarn holding and cutting section capable of holding and cutting the yarn between the package and the yarn accumulating device; and an introducing mechanism arranged integrally with the yarn holding and cutting section and that introduces into the yarn holding and cutting section the yarn present in a traversing area between the package and the yarn accumulating device.
  • the traversing drum is controlled based on the output of the yarn detecting section to stop the rotation of the package so that the yarn between the package and the yarn accumulating device stops at the predetermined position at which the yarn holding and cutting section of the doffing device can hold and cut the yarn. Therefore, the positioning member needs not be moved as in the conventional technique, so that the yarn holding and cutting section can be operated quickly after the package has stopped. As a result, the time required for the doffing can be shortened so that the production efficiency of the package can be improved.
  • the controlling section controls the traversing drum while decelerating the traversing drum, and directly stops the rotation of the traversing drum so that the yarn between the package and the yarn accumulating device stops at the predetermined position.
  • the controlling section after stopping the rotation of the traversing drum once, can rotate the traversing drum for a predetermined amount so that the yarn between the package and the yarn accumulating device stops at the predetermined position.
  • the control of the traversing drum can be avoided from becoming complicated and the yarn can be stopped precisely at the predetermined position.
  • the yarn winding device further includes a guiding member arranged upstream of the traversing drum but downstream of the yarn accumulating device in the yarn travelling direction for enclosing the yarn traversed by the traversing drum, and the yarn detecting section is arranged in the guiding member.
  • the yarn detecting section can be arranged near the yarn without interfering with the yarn.
  • a package rotation stopping method for stopping rotation of a package is implemented in a yarn winding device.
  • the yarn winding device includes a winding unit that, after temporarily accumulating a yarn pulled from a yarn supplying section in a yarn accumulating device, forms a package by winding the yarn on a winding tube while traversing the yarn with a traversing drum that rotates while being in contact with the package; and a doffing device that doffs from the winding unit a package in which the winding has been completed and including a yarn holding and cutting section capable of holding and cutting the yarn when the yarn between the package and the yarn accumulating device is at a predetermined position in a traversing area.
  • the package rotation stopping method includes a decelerating step of decelerating, when the winding of the yarn is completed, the traversing drum while the yarn between the package and the yarn accumulating device is continuous thereby decelerating the package; a yarn detecting step of detecting the yarn traversed by the traversing drum; and a yarn positioning step of controlling the traversing drum based on a detection result of the yarn obtained at the yarn detecting step to stop the rotation of the package so that the yarn between the package and the yarn accumulating device stops at the predetermined position.
  • the traversing drum is controlled based on the detection result of the yarn obtained at the yarn detecting step to stop the rotation of the package so that the yarn between the package and the yarn accumulating device stops at the predetermined position at which the yarn holding and cutting section of the doffing device can hold and cut the yarn. Therefore, the positioning member needs not be moved as in the conventional technique, so that the yarn holding and cutting section can be operated quickly after the package has stopped. As a result, the time required for the doffing can be shortened so that the production efficiency of the package can be improved.
  • the yarn detecting step is performed during the decelerating step.
  • the yarn positioning step is performed at the end of the decelerating step so that when the decelerating step is completed, the rotation of the package is stopped in a state in which the yarn between the package and the yarn accumulating device is at the predetermined position.
  • the yarn positioning step is performed after the decelerating step, and the traversing drum that was stopped once at the decelerating step is rotated only for a predetermined amount at the yarn positioning step.
  • the yarn between the package and the yarn accumulating device can be stopped at the predetermined position with a relatively simple control.
  • a yarn winding device includes a winding unit that pulls a yarn from a yarn supplying section and winds the yarn on a winding tube in a winding section to form a package; and a doffing device that doffs from the winding unit a package in which the winding has been completed.
  • the winding unit includes a traversing drum that rotates while being in contact with the package and traverses the yarn while rotating the package; and a yarn accumulating device arranged between the yarn supplying section and the winding section in a yarn travelling direction for temporarily accumulating the yarn.
  • the winding unit when the winding of the yarn is completed, stops the rotation of the package while the yarn between the package and the yarn accumulating device is continuous.
  • the doffing device includes a yarn holding and cutting section capable of holding and cutting the yarn between the package and the yarn accumulating device; and an introducing mechanism arranged integrally with the yarn holding and cutting section and that introduces into the yarn holding and cutting section the yarn present in a traversing area between the package and the yarn accumulating device.
  • the introducing mechanism that introduces into the yarn holding and cutting section the yarn present in the traversing area between the package and the yarn accumulating device is arranged integrally with the yarn holding and cutting section. Accordingly, when stopping the rotation of the package in which the winding has been completed, the yarn can be introduced into the yarn holding and cutting section by using the introducing mechanism even if the yarn between the package and the yarn accumulating device is anywhere in the traversing area. Therefore, the positioning member needs not be moved as in the conventional technique, so that the yarn holding and cutting section can be operated quickly after the package has stopped. As a result, the time required for the doffing can be shortened so that the production efficiency of the package can be improved.
  • the introducing mechanism includes an introducing member in which is formed an introducing path for introducing the yarn into the yarn holding and cutting section; and a guiding lever that guides into the introducing path the yarn present in the traversing area.
  • the yarn between the package and the yarn accumulating device can be surely introduced into the yarn holding and cutting section.
  • the introducing path is formed in a central part of the introducing member in a traversing direction, and the guiding lever is arranged on either side of the introducing path.
  • the yarn between the package and the yarn accumulating device can be more surely introduced into the yarn holding and cutting section.
  • FIG. 1 is a front view of an automatic winder according to one embodiment of the present invention.
  • an automatic winder 1 (yarn winding device of the present invention) includes a plurality of winding units 2 arranged along a predetermined arrangement direction (left-right direction in FIG. 1 ), a doffing device 3 capable of traveling along the arrangement direction, a bobbin supplying device 4 that supplies a yarn supplying bobbin B, and a machine-frame controlling device 5.
  • a left-right direction in FIG. 1 is termed as "left-right direction", an up-down direction in FIG.
  • up-down direction a front side in a direction orthogonal to the paper surface of FIG. 1 is termed as “front direction”
  • back direction a back side in the direction orthogonal to the paper surface of FIG. 1
  • the winding unit 2 unwinds a yarn Y from a yarn supplying bobbin B and winds the yarn Y on a winding tube Q (see FIG. 2 ) to form a package P.
  • the doffing device 3 travels along the arrangement direction to the position of that winding unit 2. Then, the doffing device 3 doffs the package P, in which the winding of the yarn Y has been completed, from this winding unit 2, and sets an empty winding tube Q in its place.
  • the bobbin supplying device 4 mounts a yarn supplying bobbin B on a conveying tray T and supplies the yarn supplying bobbin B supported by the conveying tray T to a desired one of the winding units 2.
  • the machine-frame controlling device 5 controls an operation of each of the winding units 2, the doffing device 3, and the bobbin supplying device 4. An operator can centrally manage the winding units 2 by appropriately operating the machine-frame controlling device 5.
  • FIG. 2 is a side view of the winding unit 2.
  • the winding unit 2 includes a yarn supplying section 10 that supplies the yarn Y while unwinding the yarn Y wound on the yarn supplying bobbin B, a yarn processing section 20 that performs various processes on the yarn Y supplied from the yarn supplying section 10, a yarn accumulating device 30 that temporarily accumulates the yarn Y that has passed the yarn processing section 20, and a winding section 40 that winds the yarn Y on the winding tube Q while traversing the yarn Y from the yarn accumulating device 30 to form a package P.
  • the yarn supplying section 10, the yarn processing section 20, the yarn accumulating device 30, and the winding section 40 are arranged in this order from bottom to top.
  • upstream and downstream in a yarn travelling direction which is a direction in which the yarn travels from the yarn supplying section 10 to the winding section 40 after passing through the yarn processing section 20 and the yarn accumulating device 30, are simply called upstream and downstream, respectively.
  • the yarn supplying section 10 includes a yarn unwinding assisting device 11 that assists the unwinding of the yarn Y when unwinding the yarn Y from the yarn supplying bobbin B held in an upright state by the conveying tray T.
  • the yarn unwinding assisting device 11 controls a size of a balloon of the yarn Y unwound from the yarn supplying bobbin B to an appropriate size by using a regulating pipe 12 thereby preventing excessive increase of a tension of the yarn Y unwound from the yarn supplying bobbin B.
  • the yarn supplying section 10 discharges the empty yarn supplying bobbin B and receives a new yarn supplying bobbin B from the bobbin supplying device 4.
  • the yarn processing section 20 includes an upper yarn catching member 21, a yarn joining device 22, a lower yarn catching member 23, a tension applying device 24, a yarn monitoring device 25, and the like.
  • the upper yarn catching member 21, the yarn joining device 22, the lower yarn catching member 23, the tension applying device 24, and the yarn monitoring device 25 are arranged in this order from upstream to downstream.
  • the upper yarn catching member 21 is arranged near but upstream of the yarn joining device 22.
  • the upper yarn catching member 21 is connected to a not-shown negative pressure source.
  • the upper yarn catching member 21 can generate a suction airflow and suck and catch the yarn Y from the winding section 40.
  • the upper yarn catching member 21 guides the caught yarn Y to the yarn joining device 22.
  • the yarn joining device 22 performs the yarn joining of a discontinuous yarn Y.
  • the yarn joining device 22 performs yarn joining of a yarn Y from the yarn supplying section 10 (lower yarn) and a yarn Y from the winding section 40 (upper yarn).
  • the yarn joining device 22 is arranged at a position that is slightly retracted from a yarn path.
  • the yarn joining device 22 joins yarn ends introduced thereinto by the upper yarn catching member 21 and the lower yarn catching member 23 so that the yarn Y becomes continuous.
  • a device that uses fluid such as compressed air, or a mechanical device can be used as the yarn joining device 22.
  • the lower yarn catching member 23 is arranged near but downstream of the yarn joining device 22.
  • the lower yarn catching member 23 is connected to a not-shown negative pressure source.
  • the lower yarn catching member 23 is a cylindrical member with an opening formed in a tip end part thereof.
  • the lower yarn catching member 23 includes a driving section 23a.
  • the driving section 23a drives the lower yarn catching member 23 so as to advance to and retreat from the yarn path.
  • the lower yarn catching member 23 generates a suction airflow at the tip thereof when the tip is near the yarn path. Accordingly, a yarn end of the yarn Y from the yarn supplying bobbin B that is blown by a later-explained lower yarn blow-feeding member 26 is sucked and caught by the lower yarn catching member 23.
  • the lower yarn catching member 23 can be configured to generate a suction airflow at the tip thereof to suck and remove fly-waste and the like that may be attached to the travelling yarn Y.
  • the lower yarn catching member 23 introduces the yarn end into the yarn joining device 22 after moving away from the yarn path in a state in which it has caught the yarn end from the yarn supplying bobbin B.
  • the tension applying device 24 applies a predetermined tension to the traveling yarn Y.
  • the tension applying device 24 is a gate-type member having fixed comb teeth and movable comb teeth, and applies a predetermined resistance on the yarn Y when the yarn Y travels between the comb teeth.
  • the movable comb teeth can be moved by, for example, a solenoid, to change a distance between the movable comb teeth and the fixed comb teeth.
  • the tension applying device 24 can adjust the tension applied to the yarn Y.
  • the configuration of the tension applying device 24 is not limited to the gate-type, and it can be a disk-type tension applying device, for example.
  • the yarn monitoring device 25 includes the monitoring section 25a that detects a yarn defect such as slub or mixing of a foreign substance by monitoring a thickness and the like of the yarn Y with an appropriate sensor. Moreover, in the yarn monitoring device 25, the cutter 25b is arranged upstream of the monitoring section 25a. The cutter 25b cuts the yarn Y immediately when the monitoring section 25a detects a yarn defect.
  • a yarn defect such as slub or mixing of a foreign substance by monitoring a thickness and the like of the yarn Y with an appropriate sensor.
  • the cutter 25b is arranged upstream of the monitoring section 25a. The cutter 25b cuts the yarn Y immediately when the monitoring section 25a detects a yarn defect.
  • the yarn processing section 20 includes the lower yarn blow-feeding member 26, an upper yarn blow-feeding member 27, and a yarn guiding member 28.
  • the lower yarn blow-feeding member 26 is a cylindrical member arranged near but downstream of the yarn unwinding assisting device 11. By jetting compressed air, the lower yarn blow-feeding member 26 generates an air current that can blow and feed the yarn Y to the lower yarn catching member 23. Accordingly, when a yarn breakage has occurred or after the yarn supplying bobbin B has been replaced, the lower yarn blow-feeding member 26 operates whereby the yarn end from the yarn supplying bobbin B can be caught with the lower yarn catching member 23 and this yarn end can be introduced into the yarn joining device 22.
  • an auxiliary blow-feeding member 13 is arranged in the yarn supplying section 10.
  • the auxiliary blow-feeding member 13 is positioned right below the conveying tray T that is arranged in the yarn supplying section 10.
  • the auxiliary blow-feeding member 13 jets compressed air inside the conveying tray T and the yarn supplying bobbin B both of which are hollow inside.
  • the upper yarn blow-feeding member 27 is a cylindrical member arranged near but upstream of the yarn accumulating device 30. By jetting compressed air, the upper yarn blow-feeding member 27 generates an air current that can blow and feed a yarn end from the yarn accumulating device 30 to the upper yarn catching member 21.
  • the yarn guiding member 28 is a cylindrical member that is curved and projects toward the front direction so as to detour around the yarn monitoring device 25, the tension applying device 24, the yarn joining device 22, and the like.
  • An opening is formed at each of the longitudinal ends of the yarn guiding member 28. The opening on one end opposes an outlet of the upper yarn blow-feeding member 27, and the opening on the other end opposes the upper yarn catching member 21.
  • a not-shown slit is formed in a back side of the yarn guiding member 28 over an entire length of the yarn guiding member 28 so that the yarn Y that passes inside the yarn guiding member 28 from the opening on one end to the opening on the other end can be taken out of the yarn guiding member 28.
  • the upper yarn blow-feeding member 27 catches the yarn end from the yarn accumulating device 30 and blows the same to the inside of the yarn guiding member 28, pulls the yarn Y along the yarn guiding member 28, and causes the yarn Y to be caught by the upper yarn catching member 21. In this manner, the yarn Y from the yarn accumulating device 30 is blown and fed by the upper yarn blow-feeding member 27 and guided to the yarn joining device 22.
  • the yarn accumulating device 30 is arranged between the yarn processing section 20 and the winding section 40 in the yarn travelling direction.
  • the yarn accumulating device 30 pulls the yarn Y from the yarn supplying section 10, temporarily accumulates the pulled yarn Y and supplies the yarn Y to the winding section 40. Because of the yarn accumulating device 30, it is prevented that the variations in the tension of the yarn Y unwound from the yarn supplying bobbin B are transmitted to the winding section 40 side. As a result, the variations in the tension of the yarn Y supplied to the winding section 40 can be suppressed leading to formation of a good quality package P. Moreover, because of the yarn accumulating device 30, the winding of the yarn Y by the winding section 40 can be continued even while performing the yarn joining.
  • the yarn accumulating device 30 includes a yarn accumulating roller 31 on which the yarn Y can be wound, and a roller driving motor 32 that rotationally drives the yarn accumulating roller 31.
  • the roller driving motor 32 can rotate the yarn accumulating roller 31 in a winding direction of the yarn Y from the yarn supplying section 10 (normal rotation) and can rotate the yarn accumulating roller 31 in an opposite direction of the winding direction (reverse rotation).
  • the yarn Y wound on the yarn accumulating roller 31 is pulled to the downstream via a pulling guide 35 arranged on a line that extends from a central axis of the yarn accumulating roller 31.
  • the yarn accumulating roller 31 has a cylindrical shape and it is formed, for example, of metal.
  • the tension is applied to the yarn Y on the upstream side of the yarn accumulating device 30.
  • the yarn Y is unwound from the yarn supplying bobbin B and the yarn Y is wound around an outer peripheral surface 31a of the yarn accumulating roller 31 thereby accumulating the yarn Y.
  • an end of the yarn accumulating roller 31 near the roller driving motor 32 will be called a base end and the opposite end will be called a tip end.
  • a ring member 33 is arranged on the outer peripheral surface 31a of the yarn accumulating roller 31 on a tip of the tip end thereof.
  • the ring member 33 has a circular shape and it is formed, for example, of rubber.
  • the ring member 33 is fit on the outer peripheral surface 31a by an elastic force that acts inward in a radial direction of the ring member 33.
  • the yarn Y is passed inside the ring member 33. Accordingly, a resistance is applied on the yarn Y pulled from the yarn accumulating roller 31 because of the elastic force of the ring member 33. Accordingly, an appropriate tension is applied to the yarn Y that is being pulled from the yarn accumulating roller 31 allowing the unwinding of the yarn Y from the yarn accumulating roller 31 to be performed in a stable manner.
  • a groove 31b is formed in the outer peripheral surface 31a of the yarn accumulating roller 31 along an axial direction of the yarn accumulating roller 31 below the location of the ring member 33 as well.
  • An urging member 36 that is biased outward in the radial direction by a not-shown spring is accommodated in a portion of the groove 31b that intersects with the ring member 33.
  • This urging member 36 is forcefully pushed inward in the radial direction by a later-explained yarn passing nozzle 34.
  • the yarn accumulating device 30 includes the cylindrical yarn passing nozzle 34.
  • the yarn passing nozzle 34 is arranged near the yarn accumulating roller 31.
  • One end of the yarn passing nozzle 34 is arranged so as to oppose the outer peripheral surface 31a of the yarn accumulating roller 31 on the tip of the tip end thereof.
  • the yarn passing nozzle 34 is configured so that the compressed air can be passed inside thereof from the other end to the one end.
  • the other end (the end that is on an opposite side of a side on which the yarn accumulating roller 31 is present) of the yarn passing nozzle 34 functions as a suction port that sucks the yarn Y
  • the one end (the end that opposes the yarn accumulating roller 31) of the yarn passing nozzle 34 functions as a blowing port for blowing off the sucked yarn Y.
  • the yarn passing nozzle 34 can be moved toward or away from the outer peripheral surface 31a of the yarn accumulating roller 31 by, for example, a sliding mechanism that uses an actuator such as an air cylinder or a motor.
  • the yarn passing nozzle 34 When the yarn passing nozzle 34 is moved toward the outer peripheral surface 31a of the yarn accumulating roller 31 while the urging member 36 is opposing the one end of the yarn passing nozzle 34, the yarn passing nozzle 34 forcefully pushes the urging member 36 inward in the radial direction against the urging force of the spring, and a gap is formed between the ring member 33 and the urging member 36.
  • the yarn end of the yarn Y that has passed from the tip end side to the base end side of the yarn accumulating roller 31 is further blown by the upper yarn blow-feeding member 27 to the yarn guiding member 28, caught by the upper yarn catching member 21, and guided to the yarn joining device 22.
  • FIG. 3 is a front view of the winding section 40 of the winding unit 2.
  • the winding section 40 includes a cradle 41 on which the winding tube Q can be mounted, a traversing drum 42 that rotates the winding tube Q or the package P while traversing the yarn Y, and a traversing guide 43 that guides the yarn Y traversed by the traversing drum 42.
  • the cradle 41 includes a pair of left and right arms 41a and a pair of left and right holders 41b attached respectively in the inside of each of the arms 41a. Accordingly, the cradle 41 can rotatably support the winding tube Q or the package P with the holders 41b. The cradle 41 can cause an outer peripheral surface of the supported package P to contact an outer peripheral surface of the traversing drum 42.
  • the traversing drum 42 is rotationally driven by a driving source 45 constituted by a motor and the like.
  • the winding tube Q or the package P is rotatably driven when the traversing drum 42 that is in contact with the outer peripheral surface of the winding tube Q or the package P is rotated.
  • the traversing drum 42 can pull the yarn Y from the yarn accumulating device 30 and rotate in a winding direction (normal rotation) for winding the yarn Y on the winding tube Q, or can rotate to pull the yarn Y from the package P (reverse rotation).
  • a traversing groove 42a is formed in the outer peripheral surface of the traversing drum 42.
  • the traversing drum 42 can traverse the yarn Y in a traversing area by using this traversing groove 42a.
  • the package P of a predetermined shape can be formed while winding the yarn Y on the winding tube Q while traversing the yarn Y with the traversing drum 42.
  • left and right end positions of the yarn Y (both end positions of the traversing area) during the traversing are only schematically shown in FIG. 3 .
  • the traversing guide 43 is arranged near but upstream of the traversing drum 42 and relatively in the front direction of the traversing drum 42.
  • the traversing guide 43 is a plate member formed of metal and the like.
  • the traversing guide 43 includes a first guide wall 43a, left and right second guide walls 43b, and left and right yarn introducing members 43c.
  • a shape of the first guide wall 43a when seen from the front direction is substantially trapezoidal, and a surface thereof on a front side (a side that is opposite of the side on which the traversing drum 42 is present) functions as a guiding surface.
  • the yarn Y that is traversed by the traversing drum 42 is guided while being in contact with the guiding surface of the first guide wall 43a, and the yarn Y performs reciprocating movement along an axial direction (traversing direction) of the traversing drum 42.
  • Each of the second guide walls 43b is connected to each of edges of the first guide wall 43a in the traversing direction.
  • the second guide walls 43b are folded back toward the front side with respect to the first guide wall 43a and each of the second guide walls 43b encloses a respective edge of the first guide wall 43a in the traversing direction. Floating up of the yarn Y on the front side guided by the first guide wall 43a is prevented by the second guide walls 43b.
  • Each of the yarn introducing members 43c is connected to each of top edges of the second guide walls 43b.
  • the yarn introducing members 43c are bent gently toward the front side with respect to the second guide walls 43b.
  • the yarn introducing members 43c overlap with each other in a front-back direction such that an inner edge in the traversing direction of one yarn introducing member 43c extends in the front side than an inner edge in the traversing direction of the other yarn introducing member 43c, and a gap 43d for passing the yarn Y is formed in a region where the yarn introducing members 43c overlap in the front-back direction.
  • the yarn Y positioned on the front side of the second guide walls 43b and the yarn introducing members 43c moves to a position where it contacts the first guide wall 43a after passing through the gap 43d by the yarn Y being traversed by the rotation of the traversing drum 42.
  • a yarn detecting sensor 44 is arranged on a left edge of the first guide wall 43a.
  • the yarn detecting sensor 44 is an optical sensor of a so-called reflection type in which a light emitting element and a light receiving element are arranged adjacent to each other.
  • a through-hole 43e is formed in a left second guide wall 43b at a position opposing the yarn detecting sensor 44.
  • the yarn Y is at a position where it does not oppose the yarn detecting sensor 44, the light emitted from the light emitting element of the yarn detecting sensor 44 is not reflected by the yarn Y, and no reflected light is received in the light receiving element as the emitted light passes through the through-hole 43e.
  • Whether the traversing is being performed normally can be determined based on whether the reflected light is received in the light receiving element of the yarn detecting sensor 44 in a predetermined traversing cycle.
  • Each of the winding units 2 includes a unit controlling section 2a (see FIG. 5 ) constituted by a CPU, a ROM, a RAM, an input-output interface, and the like.
  • the unit controlling section 2a controls operations of various structural components such as the yarn supplying section 10, the yarn processing section 20, the yarn accumulating device 30, and the winding section 40.
  • each of the unit controlling sections 2a is capable of communicating with the machine-frame controlling device 5 so that operations of a plurality of the winding units 2 are centrally managed by the machine-frame controlling device 5.
  • FIG. 4 is a view of the doffing device 3 when seen from the winding unit 2 side (back side). Accordingly, it should be noted that, the left-right direction in FIG. 4 is opposite of the left-right direction of the automatic winder 1.
  • FIG. 5 is a block diagram of an electrical configuration of the automatic winder 1.
  • the doffing device 3 moves to a position opposing that winding unit 2 and performs a doffing process for doffing the package P in which the winding has been completed.
  • the doffing device 3 can perform other processes such as a yarn-type changing process in which the doffing device 3 collaborates with the winding unit 2 for changing a type of the yarn Y to be wound in the winding section 40, and an upper-yarn cutting process of performing the yarn joining when the yarn Y is discontinued between the package P and the yarn accumulating device 30.
  • the doffing device 3 includes a housing 50, a clamp cutter 51, an extendible arm 52, a chucker 53, a cradle opener 54, a yarn shifting lever 62, and the like.
  • the housing 50 has an opening in a back surface.
  • the housing 50 accommodates various structural components of the doffing device 3.
  • the clamp cutter 51 includes a not-shown cutter for cutting the yarn Y and a not-shown clamp for holding the yarn Y.
  • the cutter and the clamp of the clamp cutter 51 are driven by an appropriate driving sources such as air cylinders.
  • the clamp cutter 51 is attached at a tip end part of the extendible arm 52.
  • the extendible arm 52 includes a plurality of rod (tube) members of different diameters and arranged in a coaxially nested manner so as to be extendible and contractible.
  • the extendible arm 52 is also configured as an air cylinder, and can be extended or contracted by compressed air supplied from a not-shown compressed air source.
  • the extendible arm 52 is pivotable in the front-back direction by a pivot motor 56 (see FIG. 5 ).
  • the clamp cutter 51 attached to the tip end part of the extendible arm 52 can move to hold the yarn Y located just below the traversing guide 43, can move the held yarn Y to the side of the winding tube Q, and the like.
  • the chucker 53 is attached so as to be rotatable around an axis 57 that extends in the left-right direction in the housing 50.
  • the chucker 53 is driven by a chucker driving section 58 (see FIG. 5 ) constituted by a motor and the like so as to rotate up and down around the axis 57.
  • the chucker 53 has a chucker part 53a at the tip end part for holding the winding tube Q.
  • the chucker 53 takes out one empty winding tube Q from a not-shown stocker located above the automatic winder 1, and after holding the winding tube Q with the chucker part 53a, rotates down and sets the winding tube Q on the cradle 41.
  • the cradle opener 54 is attached to a right wall of the housing 50.
  • the cradle opener 54 is driven by an opener driving section 59 (see FIG. 5 ) that includes an appropriate driving source such as a cylinder or a motor to perform various operations such as rotation and pivoting to operate a not-shown cradle lever of the cradle 41.
  • an appropriate driving source such as a cylinder or a motor to perform various operations such as rotation and pivoting to operate a not-shown cradle lever of the cradle 41.
  • the yarn shifting lever 62 is arranged little above the traversing drum 42.
  • the yarn shifting lever 62 is rotatable around a support shaft 62a by a yarn shifting motor 63 (see FIG. 5 ).
  • the yarn shifting lever 62 can hook the yarn Y with a tip end part thereof and rotate to move the yarn Y.
  • the yarn shifting lever 62 is used mainly when fixing the yarn Y to the winding tube Q, and when forming bunch winding.
  • the doffing device 3 includes a doffing controlling section 3a constituted by a CPU, a ROM, a RAM, an input-output interface, and the like.
  • the doffing controlling section 3a is capable of communicating with the machine-frame controlling device 5.
  • the doffing controlling section 3a controls the various driving sections of the doffing device 3 according to a command from the machine-frame controlling device 5.
  • FIG. 6 is a flowchart of the doffing process
  • FIGS. 7A to 7D are side views schematically showing an operation in the doffing process
  • FIGS. 8A to 8C are top views schematically showing an operation in the doffing process.
  • the unit controlling section 2a of this winding unit 2 stops the rotation of the traversing drum 42 and the yarn accumulating roller 31 and outputs a signal to the machine-frame controlling device 5 requesting the machine-frame controlling device 5 to instruct to perform the doffing process.
  • the doffing device 3 moves to the position of this winding unit 2 in which the winding of the yarn Y has been completed and then starts the doffing process.
  • the package P stops rotating as the rotation of the traversing drum 42 has been stopped; however, in this case, as shown in FIG. 7A , the yarn Y is still continuous between the package P and the yarn accumulating device 30.
  • the doffing controlling section 3a drives the extendible arm 52 and the pivot motor 56 thereby, as shown in FIG. 7B , moving the clamp cutter 51 to a position where it can hold and cut the yarn Y located just below the traversing guide 43 (Step S101). Then, as shown in FIG. 7C , the yarn Y is cut and a yarn end of the yarn Y from the yarn accumulating device 30 (lower yarn) is held by the clamp cutter 51 (Step S102). The yarn Y from the package P (upper yarn) is wound on the package P.
  • Step S103 the doffing controlling section 3a moves the clamp cutter 51, which is holding the yarn Y from the yarn accumulating device 30, to little above a set position (shown with an alternate long and short dash line) of the winding tube Q (Step S103).
  • the package P in which the winding has been completed is removed from the cradle 41, and an empty winding tube Q is set on the cradle 41 (Step S104).
  • Step S103 and Step S104 it is allowable to appropriately change the contents of Step S103 and Step S104. For example, it is allowable to perform a part of the processing of Step S103 and a part of the processing of Step S104 simultaneously.
  • Step S104 is explained in detail below.
  • the doffing controlling section 3a drives the opener driving section 59 to cause the cradle opener 54 to operate the not-shown cradle lever.
  • the arm 41a and the holder 41b on the right side of the cradle 41 move to the right and open whereby the cradle 41 is released. Accordingly, the package P supported by the cradle 41 can be removed from the cradle 41.
  • the doffing controlling section 3a operates the chucker 53 by driving the chucker driving section 58.
  • the chucker 53 takes out one empty winding tube Q with the chucker part 53a from the not-shown stocker, and sets the winding tube Q on the cradle 41.
  • the "bunch winding” is a yarn layer formed on the winding tube Q outside the traversing area and used in a post-process when unwinding the yarn Y from a plurality of packages P in succession. Specifically, yarn joining is previously performed of a yarn end of a yarn Y in the bunch winding on a package P to be unwound earlier and a winding ending yarn end of an outermost layer on a package P to be unwound later enabling the yarns Y of a plurality of the packages P to be unwound successively.
  • Step S105 is explained in more detail below while referring to FIGS. 8A to 8C .
  • the doffing controlling section 3a drives the yarn shifting motor 63 whereby, as shown in FIG. 8A , the yarn shifting lever 62 is rotated clockwise in the figure from a standby position (position as shown with an alternate long and short dash line).
  • the yarn Y held by the clamp cutter 51 moves to the right side of the winding tube Q and passes through a space between the winding tube Q and the holder 41b on the right side.
  • the doffing controlling section 3a returns the yarn shifting lever 62 to the standby position, the unit controlling section 2a causes the traversing drum 42 and the yarn accumulating roller 31 to perform the normal rotation and the winding of the yarn Y is restarted (Step S106).
  • the clamp cutter 51 moves to the position where it can hold and cut the yarn Y.
  • the clamp cutter 51 is configured so as to be movable with some flexibility by attaching the clamp cutter 51 to the extendible arm 52 that is expandable, contractible, and pivotable, the flexibility in such a movement has been limited to avoid the driving mechanism becoming complicated.
  • the clamp cutter 51 when it is difficult to hold the yarn Y that is just below the traversing guide 43, the clamp cutter 51 cannot move to any position other than a predetermined position in the traversing direction of the yarn Y shown with a broken line in FIG. 3 . Therefore, when the yarn Y stops at the position other than the predetermined position in the traversing area, the holding and cutting of the yarn Y cannot be performed with the clamp cutter 51.
  • a dedicated positioning member was used for positioning the yarn Y at the position where the clamp cutter 51 can cut and hold the yarn Y.
  • Such a positioning member has a width that is slightly wider than the traversing width.
  • the yarn Y is traversed while the positioning member is pressed on the yarn Y between the package P and the yarn accumulating device 30, so that the yarn Y is introduced into a notch formed on a surface of the positioning member. That is, the positioning of the yarn Y is performed by introducing the yarn Y into the notch of the positioning member.
  • this method requires extra time to move the positioning member to press on the yarn Y and then traverse the yarn Y leading to a degradation in the production efficiency of the package P.
  • the rotation of the traversing drum 42 is controlled by controlling the driving source 45, and when the rotation of the traversing drum 42 is stopped, namely when the rotation of the package P is stopped, a yarn stopping control for stopping the yarn Y in the predetermined position in the traversing area is performed.
  • a yarn stopping control for stopping the yarn Y in the predetermined position in the traversing area is performed.
  • FIGS. 9A and 9B are views for explaining a first mode of the yarn stopping control.
  • FIG. 9A is a flowchart of the yarn stopping control
  • FIG. 9B is a graph indicating a variation of the rotational speed of the traversing drum 42 in the yarn stopping control.
  • the unit controlling section 2a receives from the yarn detecting sensor 44 a detection signal relating to detection of the yarn Y, and based on this detection signal, controls deceleration and the like of the traversing drum 42 to stop the yarn Y in the predetermined position in the traversing area (Step S202). Thereafter, the rotation of the traversing drum 42 is stopped while controlling the deceleration and the like of the traversing drum 42 (Step S203).
  • the yarn Y can be stopped at the predetermined position.
  • a process from the starting of the deceleration of the traversing drum 42 up to the stopping of the traversing drum 42 corresponds to a "decelerating step" in the claims
  • a process in which the yarn Y that is being traversed during the decelerating step is detected by the yarn detecting sensor 44 corresponds to a "yarn detecting step” in the claims
  • a process in which the traversing drum 42 is stopped while controlling the deceleration and the like of the traversing drum 42 corresponds to a "yarn positioning step” in the claims. That is, the yarn positioning step is a part of the decelerating step and it is performed at the end of the decelerating step. Therefore, because it is not necessary to perform the yarn positioning step separately from the decelerating step, the yarn Y can be quickly stopped at the predetermined position.
  • FIGS. 10A and 10B are views for explaining a second mode of the yarn stopping control.
  • FIG. 10A is a flowchart of the yarn stopping control
  • FIG. 10B is a graph indicating a variation of the rotational speed of the traversing drum 42 in the yarn stopping control.
  • the unit controlling section 2a receives from the yarn detecting sensor 44 a detection signal relating to detection of the yarn Y; however, the unit controlling section 2a does not immediately perform the control of the deceleration and the like of the traversing drum 42 based on the detection signal, but simply stops the rotation of the traversing drum 42 once (Step S302).
  • the unit controlling section 2a after stopping the traversing drum 42 once, based on the detection signal received from the yarn detecting sensor 44 during the deceleration, calculates an amount for which the traversing drum 42 needs to be rotated to stop the yarn Y at the predetermined position, and rotates the traversing drum 42 only for that predetermined amount obtained in the calculation (Step S303). After the traversing drum 42 is rotated for the predetermined amount, the rotation of the traversing drum 42 is stopped (Step S304).
  • a process from the starting of the deceleration of the traversing drum 42 up to the stopping of the traversing drum 42 once corresponds to a "decelerating step" in the claims
  • a process in which the yarn Y that is being traversed during the decelerating step is detected by the yarn detecting sensor 44 corresponds to a "yarn detecting step” in the claims
  • a process in which the traversing drum 42 that is stopped once is rotated for a predetermined amount corresponds to a "yarn positioning step” in the claims. That is, the yarn positioning step is a separate step from the decelerating step, and the yarn positioning step is performed after the decelerating step. In this manner, by performing the yarn positioning step after stopping the traversing drum 42 once, the yarn Y can be stopped at the predetermined position by a relatively simple control than the first mode in which the deceleration is controlled during the decelerating step.
  • the traversing drum 42 is controlled by the unit controlling section 2a (controlling section) based on the output of the yarn detecting sensor 44 (yarn detecting section) to perform the yarn stopping control in which the rotation of the package P is stopped so that the yarn Y between the package P and the yarn accumulating device 30 stops at the predetermined position at which the clamp cutter 51 (yarn holding and cutting section) of the doffing device 3 can hold and cut the yarn Y. Therefore, the positioning member needs not be moved as in the conventional technique, so that the clamp cutter 51 can be operated quickly after the package P has stopped. As a result, the time required for the doffing can be shortened so that the production efficiency of the package P can be improved.
  • the unit controlling section 2a controls the traversing drum 42 while decelerating the traversing drum 42, and directly stops the rotation of the traversing drum 42 so that the yarn Y between the package P and the yarn accumulating device 30 is stopped at the predetermined position. That is, to stop the yarn Y between the package P and the yarn accumulating device 30 at the predetermined position, the yarn positioning step that stops the rotation of the package P is performed at the end of the decelerating step that decelerates the package P, so that when the decelerating step is completed, the rotation of the package P is stopped in a state in which the yarn Y between the package P and the yarn accumulating device 30 has stopped at the predetermined position. Therefore, the yarn Y between the package P and the yarn accumulating device 30 can be held and cut by moving the clamp cutter 51 relatively quickly so that the time required for the doffing can be further shortened.
  • the unit controlling section 2a after stopping the rotation of the traversing drum 42 once, rotates the traversing drum 42 only for the predetermined amount so that the yarn Y between the package P and the yarn accumulating device 30 stops at the predetermined position. That is, the yarn positioning step is performed after the decelerating step, and the traversing drum 42, which was stopped at the decelerating step once, is rotated only for the predetermined amount at the yarn positioning step.
  • the yarn Y between the package P and the yarn accumulating device 30 can be stopped at the predetermined position with a relatively simple control.
  • the yarn detecting step at which the yarn Y traversed by the traversing drum 42 is detected is performed during the decelerating step. Therefore, it is not necessary to traverse the yarn Y only to perform the yarn detecting step so that the rotation of the package P can be stopped quickly.
  • the yarn detecting step can be performed separately from the decelerating step.
  • the yarn detecting step can be performed during the yarn positioning step that is performed after stopping the traversing drum 42 once.
  • the yarn detecting sensor 44 is arranged in the traversing guide 43; however, the yarn detecting sensor 44 can be arranged at a different position.
  • an introducing mechanism 70 for introducing into the clamp cutter 51 the yarn Y present in the traversing area can be integrally formed in the clamp cutter 51.
  • the introducing mechanism 70 includes a plate-shaped introducing member 71 and a pair of left and right guiding levers 72.
  • the introducing member 71 is substantially trapezoidal in shape.
  • a slit-shaped introducing path 71a In a central part in the left-right direction (traversing direction) of the introducing member 71 is formed a slit-shaped introducing path 71a that leads to the clamp cutter 51.
  • Each of the guiding levers 72 is pivotable around a support shaft 72a by being driven by a not-shown driving section such as a motor.
  • a hooking member 72b for hooking the yarn Y is formed at a tip end part of each of the guiding levers 72 that projects from the introducing member 71.
  • the guiding levers 72 are pivotable between an open position shown in FIG.
  • FIG. 11A at which the guiding levers 72 are open respectively outside in the traversing direction and a closed position shown in FIG. 11B at which the guiding levers 72 are closed respectively inside in the traversing direction.
  • the left and the right guiding levers 72 are located outside of the traversing area of the yarn Y.
  • Such an introducing mechanism 70 operates as explained below at Step S101 of the doffing process.
  • the clamp cutter 51 is moved downward such that the introducing member 71 is positioned so that a tip end part thereof somewhat presses the yarn Y.
  • the guiding levers 72 are assumed to be in the open position.
  • the doffing controlling section 3a pivots the guiding levers 72 to the closed position.
  • the yarn Y present somewhere in the traversing area is hooked by the hooking member 72b of one of the left and the right guiding levers 72, and the hooked yarn Y is guided directly by the guiding lever 72 into the introducing path 71a.
  • the yarn Y is pressed by the tip end part of the introducing member 71, after the yarn Y is guided into the introducing path 71a, the yarn Y moves well inside the introducing path 71a because of the tension on the yarn Y, and the yarn Y is guided to a position where the yarn Y can be held and cut by the clamp cutter 51.
  • the yarn Y can be introduced into the clamp cutter 51 by using the introducing mechanism 70 even if the yarn Y between the package P and the yarn accumulating device 30 is anywhere in the traversing area. Therefore, the positioning member needs not be moved as in the conventional technique, so that the clamp cutter 51 can be operated quickly after the package P has stopped. As a result, the time required for the doffing can be shortened so that the production efficiency of the package P can be improved.
  • the introducing mechanism 70 includes the introducing member 71 in which is formed the introducing path 71a that introduces the yarn Y into the clamp cutter 51, and the guiding levers 72 that guide the yarn Y present in the traversing area into the introducing path 71a.
  • the introducing path 71a is formed in the central part of the introducing member 71 in the traversing direction, and the guiding levers 72 are arranged on either side of the introducing path 71a.
  • the specific configuration of the introducing mechanism 70 is not limited to the one shown in FIGS. 11A and 11B .
  • the guiding levers can be omitted.
  • a central part in the left-right direction (traversing direction) of an introducing member 81 of the introducing mechanism 80 is formed a slit-shaped introducing path 81a that leads to the clamp cutter 51.
  • a tip end part of the introducing member 81 are formed into taper parts 81b that protrude respectively toward the tip end part as one goes toward outside in the traversing direction from the introducing path 81a. Because of these taper parts 81b, the yarn Y can be guided into the introducing path 81a by simply moving the introducing member 81 so as to press the yarn Y on the taper part 81b.
  • a yarn winding device includes a winding unit that pulls a yarn from a yarn supplying section and winds the yarn on a winding tub in a winding section to form a package; and a doffing device that doffs from the winding unit a package in which the winding has been completed.
  • the winding unit includes a traversing drum that rotates while being in contact with the package and traverses the yarn while rotating the package; a yarn accumulating device arranged between the yarn supplying section and the winding section in a yarn travelling direction for temporarily accumulating the yarn; a yarn detecting section capable of detecting the yarn traversed by the traversing drum; and a controlling section that controls the traversing drum.
  • the doffing device includes a yarn holding and cutting section capable of holding and cutting the yarn when the yarn between the package and the yarn accumulating device is at a predetermined position in a traversing area.
  • the controlling section controls, when the winding of the yarn is completed, a rotation of the traversing drum based on an output of the yarn detecting section such that, when the yarn between the package and the yarn accumulating device is continuous, to stop the rotation of the package so that the yarn between the package and the yarn accumulating device stops at the predetermined position.

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Claims (11)

  1. Dispositif de bobinage de fil (1), comprenant:
    une unité de bobinage (2) configurée pour tirer un fil d'un segment d'alimentation de fil (10) et pour enrouler le fil sur un tube de bobinage (Q) dans un segment de bobinage (40) pour former un paquet (P); et
    un dispositif de retrait (3) configuré pour retirer un paquet (P) de l'unité de bobinage (2) lorsque le bobinage du fil est terminé,
    dans lequel l'unité de bobinage (2) comporte
    un tambour transversal (42) configuré pour tourner tout en étant en contact avec le paquet (P) et pour traverser le fil tout en faisant tourner le paquet (P);
    un dispositif d'accumulation de fil (30) disposé entre le segment d'alimentation de fil (10) et le segment de bobinage (40) dans une direction de déplacement de fil pour accumuler temporairement le fil; et
    un segment de commande (2a) configuré pour commander le tambour de déplacement (42), et
    caractérisé par le fait que
    l'unité de bobinage (2) comporte un segment de détection de fil (44) à même de détecter le fil traversé par le tambour transversal (42); et
    le dispositif de retrait (3) comporte un segment de maintien et de coupe de fil (51) à même de maintenir et de couper le fil lorsque le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) se trouve en une position prédéterminée dans une zone transversale, et
    le segment de commande (2a) est configuré pour commander, lorsque le bobinage du fil est terminé, une rotation du tambour transversal (42) sur base d'une sortie du segment de détection de fil (44) de manière à arrêter, lorsque le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) est continu, la rotation du paquet (P) de sorte que le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) s'arrête à la position prédéterminée.
  2. Dispositif de bobinage de fil (1) selon la revendication 1, caractérisé par le fait que le segment de commande (2a) est configuré pour commander le tambour transversal (42) tout en décélérant le tambour transversal (42), et pour arrêter directement la rotation du tambour transversal (42) de sorte que le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) s'arrête à la position prédéterminée.
  3. Dispositif de bobinage de fil (1) selon la revendication 1, caractérisé par le fait que le segment de commande (2a), après avoir arrêté une fois la rotation du tambour transversal (42), est configuré pour faire tourner le tambour transversal (42) d'une quantité prédéterminée de sorte que le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) s'arrête à la position prédéterminée.
  4. Dispositif de bobinage de fil (1) selon l'une quelconque des revendications 1 à 3, comprenant par ailleurs un élément de guidage (43) disposé en amont du tambour transversal (42), mais en aval du dispositif d'accumulation de fil (30), dans la direction de déplacement de fil pour enfermer le fil traversé par le tambour transversal (42), et le segment de détection de fil (44) est disposé dans l'élément de guidage (43).
  5. Procédé d'arrêt de rotation d'un paquet pour arrêter la rotation d'un paquet (P) dans un dispositif de bobinage de fil (1), le dispositif de bobinage de fil (1) comportant
    une unité de bobinage (2) qui, après avoir accumulé temporairement un fil tiré d'un segment d'alimentation de fil (10) dans un dispositif d'accumulation de fil (30), forme un paquet (P) en enroulant le fil sur un tube de bobinage (Q) tout en traversant le fil par un tambour transversal (42) qui tourne tout en étant en contact avec le paquet (P); et
    un dispositif de retrait (3) qui retire de l'unité de bobinage (2) un paquet (P) dans lequel le bobinage est terminé, et comportant un segment de maintien et de coupe de fil (51) à même de maintenir et de couper le fil lorsque le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) se trouve en une position prédéterminée dans une zone transversale,
    le procédé d'arrêt de rotation de paquet comprenant:
    une étape de décélération consistant à décélérer, lorsque le bobinage du fil est terminé, le tambour transversal (42) tandis que le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) est continu, décélérant ainsi le paquet (P);
    une étape de détection de fil consistant à détecter le fil traversé par le tambour transversal (42); et
    une étape de positionnement de fil consistant à commander le tambour transversal (42) sur base d'un résultat de détection du fil obtenu au cours de l'étape de détection de fil pour arrêter la rotation du paquet (P) de sorte que le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) s'arrête à la position prédéterminée.
  6. Procédé d'arrêt de rotation de paquet selon la revendication 5, caractérisé par le fait que l'étape de détection de fil est effectuée pendant l'étape de décélération.
  7. Procédé d'arrêt de rotation de paquet selon la revendication 5 ou 6, caractérisé par le fait que l'étape de positionnement de fil est effectuée à la fin de l'étape de décélération, de sorte que, lorsque l'étape de décélération est terminée, la rotation du paquet (P) est arrêtée dans un état dans lequel le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) se trouve en la position prédéterminée.
  8. Procédé d'arrêt de rotation de paquet selon la revendication 5 ou 6, caractérisé par le fait que
    l'étape de positionnement de fil est effectuée après l'étape de décélération, et
    le tambour transversal (42) qui a été arrêté une fois à l'étape de décélération n'est tourné que d'une quantité prédéterminée à l'étape de positionnement de fil.
  9. Dispositif de bobinage de fil (1), comprenant:
    une unité de bobinage (2) configurée pour tirer un fil d'un segment d'alimentation de fil (10) et pour bobiner le fil sur un tube de bobinage (Q) dans un segment de bobinage (40) pour former un paquet (P); et
    un dispositif de retrait (3) configuré pour retirer un paquet (P) de l'unité de bobinage (2) lorsque le bobinage du fil est terminé,
    dans lequel l'unité de bobinage (2) comporte
    un tambour transversal (42) configuré pour tourner tout en étant en contact avec le paquet (P) et pour traverser le fil tout en faisant tourner le paquet (P); et
    un dispositif d'accumulation de fil (30) disposé entre le segment d'alimentation de fil (10) et le segment de bobinage (40) dans une direction de déplacement de fil pour accumuler temporairement le fil,
    caractérisé par le fait que
    lorsque le bobinage du fil est terminé, l'unité de bobinage (2) est configurée pour arrêter la rotation du paquet (P) tandis que le fil entre le paquet (P) et le dispositif d'accumulation de fil (30) est continu, et
    le dispositif de retrait (3) comporte
    un segment de maintien et de coupe de fil (51) à même de maintenir et de couper le fil entre le paquet (P) et le dispositif d'accumulation de fil (30); et
    un mécanisme d'introduction (70, 80) disposé de manière solidaire avec le segment de maintien et de coupe de fil (51), le mécanisme d'introduction (70, 80) étant configuré pour introduire dans le segment de maintien et de coupe de fil (51) le fil présent dans une zone transversale entre le paquet (P) et le dispositif d'accumulation de fil (30).
  10. Dispositif de bobinage de fil (1) selon la revendication 9, caractérisé par le fait que
    le mécanisme d'introduction (70) comporte
    un élément d'introduction (71);
    un trajet d'introduction (71a) formé dans l'élément d'introduction (71), le trajet d'introduction (71a) étant destiné à introduire le fil dans le segment de maintien et de coupe de fil (51); et
    un levier de guidage (72) configuré pour guider le fil présent dans la zone transversale dans le trajet d'introduction (71a).
  11. Dispositif de bobinage de fil (1) selon la revendication 10, caractérisé par le fait que
    le chemin d'introduction (71a) est formé dans une partie centrale de l'élément d'introduction (71) dans une direction transversale, et
    le levier de guidage (72) est disposé de part et d'autre du trajet d'introduction (71a).
EP17192831.0A 2016-10-19 2017-09-25 Dispositif de bobinage de fil et procédé d'arrêt de rotation de paquet Active EP3312116B1 (fr)

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Application Number Priority Date Filing Date Title
JP2016205385A JP2018065658A (ja) 2016-10-19 2016-10-19 糸巻取装置及びパッケージの回転停止方法

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EP3312116B1 true EP3312116B1 (fr) 2019-07-24

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JP7035211B2 (ja) * 2018-10-09 2022-03-14 Ｔｍｔマシナリー株式会社 糸巻取機
DE102021130062A1 (de) 2021-11-17 2023-05-17 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Spulstelle einer Spulmaschine sowie Spulmaschine

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DE3734478A1 (de) * 1987-10-12 1989-04-27 Schubert & Salzer Maschinen Verfahren und vorrichtung zum fuehren, halten und trennen eines fadens beim spulenwechsel
EP1089933B1 (fr) * 1998-06-12 2003-10-08 Maschinenfabrik Rieter Ag Changement de fil
US6374588B1 (en) * 1999-10-13 2002-04-23 Murata Kikai Kabushiki Kaisha Hairiness controlling device and winder
JP3646682B2 (ja) * 2001-02-28 2005-05-11 村田機械株式会社 自動ワインダにおける巻取管への糸装着方法及び自動ワインダ
EP1411014A1 (fr) * 2002-10-17 2004-04-21 Giudici S.p.a. Procédé et dispositif pour la production d'un fil élastique et pour remplacer automatiquement les bobines d'alimentation
ITMI20050628A1 (it) * 2005-04-13 2006-10-14 Savio Macchine Tessili Spa Dispositivo e procedimento per la manipolazione e il controllo del filo in una testa di roccatura di una macchina roccatrice nelle operazioni di avvio di una nuova partira
ITMI20061763A1 (it) * 2006-09-15 2008-03-16 Savio Macchine Tessili Spa Procedimento perfezionato di avvolgimento del filato in rocca con dispositivi guidafili individuali
JP2013063841A (ja) * 2011-09-20 2013-04-11 Murata Machinery Ltd 玉揚装置及びそれを備えた繊維機械
JP2014019541A (ja) * 2012-07-18 2014-02-03 Murata Mach Ltd 糸監視装置及び糸巻取機
JP2015147633A (ja) * 2014-02-05 2015-08-20 村田機械株式会社 ボビンセット装置、及び糸巻取機
JP2015157658A (ja) * 2014-02-21 2015-09-03 村田機械株式会社 糸巻取装置
JP2016047764A (ja) * 2014-08-28 2016-04-07 村田機械株式会社 糸巻取装置及び糸巻取機

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CN107963512A (zh) 2018-04-27
CN107963512B (zh) 2021-02-09
JP2018065658A (ja) 2018-04-26

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