EP2966021A1 - Garnwickelmaschine und garnwickelverfahren - Google Patents

Garnwickelmaschine und garnwickelverfahren Download PDF

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Publication number
EP2966021A1
EP2966021A1 EP15170253.7A EP15170253A EP2966021A1 EP 2966021 A1 EP2966021 A1 EP 2966021A1 EP 15170253 A EP15170253 A EP 15170253A EP 2966021 A1 EP2966021 A1 EP 2966021A1
Authority
EP
European Patent Office
Prior art keywords
yarn
package
winding
pooling
winding section
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.)
Withdrawn
Application number
EP15170253.7A
Other languages
English (en)
French (fr)
Inventor
Noboru Nakayama
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
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 Murata Machinery Ltd filed Critical Murata Machinery Ltd
Priority to EP16166163.2A priority Critical patent/EP3072840B1/de
Publication of EP2966021A1 publication Critical patent/EP2966021A1/de
Withdrawn legal-status Critical Current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
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/062—Electronic slub detector
    • 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
    • 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
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/22—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to presence of irregularities in 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
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention principally relates to processes performed by a yarn winding machine when suspending winding of a yarn.
  • Yarn winding machines equipped with a yarn monitoring device, a yarn cutting device, and a yarn joining device are known in the art.
  • the yarn monitoring device is an optical sensor or the like, and monitors a state of a traveling yarn.
  • the yarn cutting device cuts the yarn when the yarn monitoring device detects a yarn defect.
  • the yarn joining device performs yarn joining to join the yarn from a yarn supplying section and the yarn from a winding section after the yarn cutting device cuts the yarn.
  • Patent Document 1 discloses such a yarn winding machine.
  • the yarn winding machine (spinning machine) disclosed in Patent Document 1 suspends a spinning process when the yarn monitoring device (yarn clearer) detects a yarn defect.
  • the suspension of the spinning process includes stopping the operations of a drafting device, an air-jet spinning device, and a winding section.
  • the yarn is disconnected by suspension of the spinning process, and a yarn end downstream of the disconnected point (point where the yarn is disconnected) is wound onto a package.
  • a yarn winding machine includes a yarn supplying section, a yarn pooling device, and a winding section.
  • the yarn supplying section supplies a yarn.
  • the yarn pooling device pools the yarn supplied by the yarn supplying section.
  • the winding section winds the yarn from the yarn pooling device to form a package.
  • the winding section includes a rotation driving unit that rotates the package. The winding section causes the rotation driving unit to stop the rotation of the package before the yarn is disconnected or after the yarn is disconnected but before a yarn end is wound onto the package.
  • a yarn winding method includes a winding step and a stopping step. At the winding step, the yarn is wound onto the package while the yarn is pooled in the yarn pooling device. At the stopping step, the rotation of the package is stopped before the yarn is disconnected or after the yarn is disconnected but before the yarn end is wound onto the package.
  • upstream and downstream refer to upstream and downstream in a traveling direction of a fiber bundle and a spun yarn during spinning.
  • the spinning machine includes plural spinning units 2 arranged side by side and a not shown main control device that performs centralized management of the spinning units 2.
  • an air-jet spinning device (yarn supplying section) 9 spins a fiber bundle 8 conveyed from a drafting device 7 to form a spun yarn 10, and a winding section 26 winds the spun yarn 10 to form a package 50.
  • each spinning unit 2 includes, sequentially from upstream to downstream, the drafting device 7, the air-jet spinning device 9, a yarn pooling device 22, a yarn joining device 23, a yarn monitoring device 25, and the winding section 26. All the parts of the spinning unit 2 are controlled by a unit controller (controller) 90 arranged in the spinning unit 2. All the parts of the spinning unit 2 can instead be controlled by the main control device (controller).
  • the drafting device 7 includes, sequentially from the upstream, four draft rollers, namely, a back roller 16, a third roller 17, a middle roller 19 with a rubber apron belt 18, and a front roller 20. Each of the draft rollers is driven to rotate at a predetermined rotation speed.
  • the drafting device 7 includes plural opposing rollers arranged respectively facing the draft rollers.
  • the drafting device 7 transports a sliver 15 supplied from a sliver case (not shown) via a sliver guide (not shown) by nipping the sliver 15 between the draft rollers and the opposing rollers, thus forming the fiber bundle 8 by stretching (drafting) the sliver 15 until a predetermined fiber amount (or thickness) is obtained.
  • the air-jet spinning device 9 is arranged immediately downstream of the front roller 20.
  • the air-jet spinning device 9 forms the spun yarn 10 by twisting the fiber bundle 8 supplied from the drafting device 7.
  • an air-jet spinning device that twists the fiber bundle 8 by using a swirling airflow has been employed.
  • a first guide 61 (see FIG. 2 ) that guides the spun yarn 10 is arranged downstream of the air-jet spinning device 9.
  • the first guide 61 guides the spun yarn 10 to the yarn pooling device 22.
  • the first guide 61 is movable so that it can pull the spun yarn 10 to the yarn pooling device 22 for performing yarn joining or the like.
  • the yarn pooling device 22 is arranged downstream of the first guide 61.
  • the yarn pooling device 22 includes a yarn pooling roller 41, an electric motor 42 that drives the yarn pooling roller 41 to rotate, a yarn hooking member 43, and a residual yarn sucking device 45.
  • the spun yarn 10 is temporarily pooled by being wound around the outer circumferential surface of the yarn pooling roller 41.
  • the yarn hooking member 43 is mounted on a downstream end portion of the yarn pooling roller 41.
  • the yarn hooking member 43 is supported in a rotatable manner relatively to the yarn pooling roller 41.
  • a permanent magnet is attached to any one of the yarn hooking member 43 and the yarn pooling roller 41, and a magnetic hysteresis member is attached to the other of the yarn hooking member 43 and the yarn pooling roller 41. These magnetic means generate a torque against a relative rotation of the yarn hooking member 43 with respect to the yarn pooling roller 41.
  • the yarn hooking member 43 is rotated relatively to the yarn pooling roller 41 so that the spun yarn 10 wound around the yarn pooling roller 41 can be unwound.
  • the yarn pooling roller 41 and the yarn hooking member 43 are integrally rotated so that the spun yarn 10 is wound around the yarn pooling roller 41.
  • the yarn pooling device 22 operates such that the spun yarn 10 is unwound when the yarn tension on the downstream is increased, and the spun yarn 10 is prevented from being unwound when the yarn tension is decreased (when the spun yarn 10 is about to have a slack). With this operation, the yarn pooling device 22 can remove the slack of the spun yarn 10 and apply an appropriate tension on the spun yarn 10. Furthermore, because the yarn hooking member 43 operates to absorb a variation of the tension applied on the spun yarn 10 between the yarn pooling device 22 and the winding section 26, the variation of the tension is prevented from affecting the spun yarn 10 between the air-jet spinning device 9 and the yarn pooling device 22.
  • the residual yarn sucking device 45 is arranged in an upstream end area of the yarn pooling roller 41.
  • the residual yarn sucking device 45 is connected to a not shown blower and can generate a suction airflow.
  • the spun yarn 10 remaining on the yarn pooling roller 41 after cutting or the like of the spun yarn 10 can be removed by causing the yarn pooling roller 41 to rotate in the reverse direction while causing the residual yarn sucking device 45 to generate the suction airflow.
  • a second guide 62 that regulates the spun yarn 10 unwound from the yarn pooling roller 41 is arranged downstream of the yarn pooling roller 41.
  • the yarn joining device 23 is arranged downstream of the second guide 62.
  • the yarn joining device 23 joins the spun yarn 10 from the air-jet spinning device 9 (first yarn) and the spun yarn 10 from the package 50 (second yarn) when the spun yarn 10 is disconnected between the air-jet spinning device 9 and the package 50 due to any reason.
  • the yarn joining device 23 is a splicer device that twists and joins the yarn ends by the action of a swirling air current generated by compressed air.
  • the yarn joining device 23, however, is not limited to the splicer device, and can be, for example, a mechanical knotter and the like.
  • the spinning unit 2 includes a first catching and guiding device 27 and a second catching and guiding device (catching and guiding device) 28 that guide the spun yarn 10 to the yarn joining device 23.
  • the first catching and guiding device 27 includes a base portion that is pivotably supported, and is able to pivot in a vertical direction around the base portion as a center.
  • the first catching and guiding device 27 is hollow, connected to a not shown blower, and can generate a suction airflow.
  • the first catching and guiding device 27 catches an end of the first yarn by pivoting downward (see FIG. 6 ). After catching the first yarn, the first catching and guiding device 27 guides the first yarn to the yarn joining device 23 by pivoting upward.
  • the second catching and guiding device 28 includes a base portion that is pivotably supported, and is able to pivot in the vertical direction around the base portion as a center.
  • the second catching and guiding device 28 is also hollow, connected to a not shown blower, and can generate a suction airflow.
  • the second catching and guiding device 28 catches an end of the second yarn by pivoting upward (see FIG. 6 ). After catching the second yarn, the second catching and guiding device 28 guides the second yarn to the yarn joining device 23 by pivoting downward.
  • the yarn joining device 23 By driving the yarn joining device 23 in a state in which the first yarn and the second yarn are guided in the yarn joining device 23, the first yarn and the second yarn are joined to bring the spun yarn 10 in a continuous state between the air-jet spinning device 9 and the package 50. Due to this, the winding of the spun yarn 10 on the package 50 can be resumed.
  • the yarn monitoring device 25 is arranged downstream of the yarn joining device 23.
  • the yarn monitoring device 25 monitors a thickness of the traveling spun yarn 10 with a not shown optical transmission type sensor.
  • the yearn monitoring device 25 transmits a yarn defect detection signal to the unit controller 90.
  • the unit controller 90 drives a cutter (first yarn cutting device) 24 equipped in the yarn monitoring device 25 to cut the spun yarn 10.
  • the sensor with which the yarn monitoring device 25 monitors the thickness of the spun yarn 10 is not limited to an optical transmission type sensor, and can, for example, be a capacitance type sensor. A foreign matter included in the spun yarn 10 can be monitored as the yarn defect.
  • the cutter 24 can be arranged between the yarn pooling device 22 and the winding section 26. Moreover, the cutter 24 can even be arranged as a separate unit from the yarn monitoring device 25.
  • the winding section 26 is arranged downstream of the yarn pooling device 22.
  • the winding section 26 includes a cradle arm 52, a winding drum 53, and a winding-drum driving motor (rotation driving unit) 54.
  • a direction of a yarn path from the yarn pooling device 22 to the winding section 26 is bent and guided by a downstream guide 63.
  • the cradle arm 52 rotatably supports a winding tube 51 on which the spun yarn 10 is to be wound.
  • the cradle arm 52 is pivotable around a base portion as a center of pivoting. With this configuration, even when a diameter of the package 50 increases with the winding of the spun yarn 10 around the winding tube 51, the winding of the spun yarn 10 can be continued properly.
  • the winding drum 53 rotates while being in contact with an outer circumferential surface of the winding tube 51 or the package 50 by a driving force transmitted from the winding-drum driving motor 54.
  • a not shown traverse groove is formed on an outer circumferential surface of the winding drum 53 and the spun yarn 10 can be traversed to a predetermined width using this traverse groove.
  • the winding section 26 can form the package 50 by winding the spun yarn 10 around the winding tube 51 while traversing the spun yarn 10.
  • the winding drum 53 of every spinning unit 2 can be rotated at a different speed.
  • a process procedure performed by the spinning unit 2 when a yarn defect is detected by the yarn monitoring device 25 is explained below with reference to FIGS. 3 to 7 .
  • the process procedure shown in the flowchart of FIG. 3 is merely an example; the sequence of the processes can be changed, and two processes can be performed simultaneously.
  • FIG. 4 shows a situation where the spun yarn 10 is being wound.
  • a defect of the spun yarn 10 is schematically denoted with the reference numeral 11.
  • the rotation of the package 50 is stopped using a package brake or the like (Step S102).
  • the spinning unit 2 stops the drafting of the fiber bundle 8 by stopping the drafting device 7 and stops the spinning by stopping the air-jet spinning device 9 (Step S103).
  • the drafting device 7 and the like are stopped after stopping the rotation of the package 50. That is, the rotation of the package 50 is stopped while the spun yarn 10 is continuous from the yarn pooling device 22 to the winding section 26.
  • the yarn defect 11 is wound onto the package 50 because of the time lag between the detection of the yarn defect 11 by the yarn monitoring device 25 and stopping of the rotation of the package 50.
  • the spun yarn 10 downstream of the air-jet spinning device 9 is cut due to stopping of the spinning by the air-jet spinning device 9 (see FIG. 5 ).
  • the spinning unit 2 uses the cutter 24 to cut the spun yarn 10 between the yarn pooling device 22 and the winding section 26 (Step S104).
  • the spun yarn 10 from the winding section 26 shall be referred to as a second yarn 10b and the spun yarn 10 formed by cutting at two ends thereof shall be referred to as a residual yarn 10c.
  • the spun yarn 10 that is freshly spun by the air-jet spinning device 9 shall be referred to as a first yarn 10a.
  • the spinning unit 2 then performs a process of removing the residual yarn 10c (Step S105). Specifically, after the spun yarn 10 is cut between the air-jet spinning device 9 and the yarn pooling device 22, the upstream yarn end of the residual yarn 10c is wound on the yarn pooling roller 41 by continuing the rotation of the yarn pooling roller 41. The spinning unit 2 then causes the yarn pooling roller 41 to rotate in the reverse direction while causing the residual yarn sucking device 45 to suck the upstream yarn end of the residual yarn 10c. By this action, the residual yarn 10c wound on the yarn pooling roller 41 is gradually unwound and sucked by the residual yarn sucking device 45, and is thereby removed from the yarn pooling roller 41. Some other method can be adopted for removing the residual yarn 10c; for example, the residual yarn 10c can be removed by rotating the yarn pooling roller 41 in the winding direction with the residual yarn 10c removed from the yarn hooking member 43.
  • Step S106 An operation of catching and guiding the cut yarn end to the yarn joining device 23 is performed next. Specifically, as shown in FIG. 6 , the second catching and guiding device 28 pivots upward to suck and catch the second yarn 10b (Step S106). In the present embodiment, because the spun yarn 10 is cut after stopping the rotation of the package 50, the yarn end is not wound onto the package 50. Hence, as shown in FIG. 6 , the second catching and guiding device 28 catches the yarn end at a more upstream location than the package 50.
  • the catching position of the second yarn 10b by the second catching and guiding device 28 can be set as desired. For example, the second catching and guiding device 28 can catch the second yarn 10b at any position upstream of or downstream of the position shown in FIG. 6 .
  • the second catching and guiding device 28 After sucking and catching the second yarn 10b, the second catching and guiding device 28 pivots downward, as shown in FIG. 7 . By this action, the second yarn 10b is guided to a position where yarn joining can be performed by the yarn joining device 23 (Step S106). At this time, the package 50 is rotated in the reverse direction (in the direction opposite to the winding direction) (Step S106). After the package 50 is rotated in the reverse direction at least till the yarn defect 11 can be removed, the spinning unit 2 stops the rotation of the package 50 (Step S107).
  • the amount of the reverse rotation of the package 50 can be a fixed amount. Alternatively, the amount of rotation of the package 50 between a time period from a time point when the yarn defect is detected to a time point when the package 50 stops rotating can be detected and this amount can be set as the amount of the reverse rotation of the package 50.
  • the first catching and guiding device 27 moves to a position where it can catch the first yarn 10a by pivoting downward, as shown in FIG. 6 (Step S108).
  • the drafting of the fiber bundle 8 by the drafting device 7 and the spinning by the air-jet spinning device 9 are resumed, and the first catching and guiding device 27 sucks and catches the first yarn 10a (Step S108).
  • the first catching and guiding device 27 pivots upward, as shown in FIG. 7 .
  • the first yarn 10a is guided to a position where the yarn joining can be performed by the yarn joining device 23 (Step S108).
  • the first guide 61 then moves so as to approach the yarn pooling device 22.
  • the spun yarn 10 comes into contact with the yarn hooking member 43 of the yarn pooling device 22.
  • the yarn joining device 23 joins the first yarn 10a and the second yarn 10b (Step S109).
  • the winding section 26 resumes winding of the spun yarn 10 by rotating the package 50 (Step S110).
  • a second embodiment of the present invention is explained below with reference to FIGS. 8 to 12 .
  • the spinning machine according to the second embodiment includes the devices similar to the spinning machine according to the first embodiment. However, unlike the first embodiment in which the residual yarn 10c is removed, in the second embodiment, the residual yarn 10c is joined to the second yarn 10b and thereby also wound onto the package 50.
  • the process procedure is explained in detail below.
  • the processes at Steps S201 to S204 and Steps S205 and S206 are the same as the processes at Steps S101 to S104 and Steps S106 and S107, respectively, and therefore the description thereof is omitted.
  • the first catching and guiding device 27 pivots downward and sucks and catches the residual yarn 10c, as shown in FIG. 9 (Step S207).
  • the position where the first catching and guiding device 27 catches the residual yarn 10c is not particularly limited and can be appropriately changed.
  • a not shown guide member can be arranged and the residual yarn 10c can be caught near the guide member.
  • the first catching and guiding device 27 pivots upward, as shown in FIG. 10 .
  • the residual yarn 10c is guided to a position where yarn joining can be performed by the yarn joining device 23 (Step S207).
  • the yarn joining device 23 then joins the second yarn 10b and the residual yarn 10c (Step S208).
  • the second yarn 10b with which the residual yarn 10c is joined shall be referred to as a second yarn 10b'.
  • the winding section 26 rotates the package 50 and stops the rotation of the package 50 at a timing when the end of the second yarn 10b' reaches a predetermined position (Step S209).
  • the predetermined position is not particularly limited and can be any position where the second catching and guiding device 28 can easily catch the yarn end. By this action, the end of the second yarn 10b' is prevented from being wound onto the package 50.
  • the second catching and guiding device 28 pivots upward, and sucks and catches the end of the second yarn 10b' present at the predetermined position (Step S210). With the end of the second yarn 10b' sucked and held, the second catching and guiding device 28 pivots downward as shown in FIG. 12 , and guides the second yarn 10b' to the yarn joining device 23 (Step S210).
  • the first catching and guiding device 27 catches and guides the first yarn 10a formed by the air-jet spinning device 9 to the yarn joining device 23 (Step S211, see FIGS. 10 and 11 ). Thereafter, the yarn joining device 23 joins the first yarn 10a and the second yarn 10b' (Step S212). After completion of the yarn joining, the winding section 26 resumes winding of the spun yarn 10 by rotating the package 50 (Step S213).
  • an amount of the spun yarn 10 that is discarded can be reduced as compared to the first embodiment.
  • the control to reduce the amount of the spun yarn 10 pooled in the yarn pooling device 22 need not be performed as strictly as in the first embodiment.
  • the yarn pooling roller 41 need not be rotated in the reverse direction; hence, occurrence of malfunction (tangling or the like of the spun yarn 10) due to reverse rotation and a load on the electric motor 42 can be reduced.
  • the yarn monitoring device 25 is arranged not upstream of but downstream of the yarn pooling device 22.
  • the quality of the spun yearn 10 can be monitored at a position near the package 50.
  • yarn waste or the like that adhere to the spun yarn 10 when the spun yarn 10 travels past the yarn pooling device 22 or the like can be detected.
  • a third embodiment of the present invention is explained below with reference to FIGS. 13 to 15 .
  • the yarn monitoring device 25 is arranged between the yarn pooling device 22 and the winding section 26.
  • a second yarn monitoring device 70 is arranged between the air-jet spinning device 9 and the yarn pooling device 22, and a first yarn monitoring device (yarn monitoring device) 25a is arranged between the yarn pooling device 22 and the winding section 26.
  • the process procedure performed by the spinning unit 2 when a yarn defect is detected by the second yarn monitoring device 70 is explained below.
  • the spinning unit 2 stops the drafting by the drafting device 7 and the spinning by the air-jet spinning device 9 (Step S302).
  • the spun yarn 10 between the air-jet spinning device 9 (second yarn cutting device) and the yarn pooling device 22 is cut, as shown in FIG. 14 .
  • the winding section 26 stops the rotation of the package 50 (Step S303).
  • the predetermined position is not particularly limited and can be any position where the second catching and guiding device 28 can easily catch the yarn end. By this action, the end of the second yarn 10b is prevented from being wound onto the package 50.
  • Step S304 to S308, see FIG. 15 are the same as in the first embodiment (Steps S106 to S110, respectively).
  • the third embodiment because the spun yarn 10 is cut immediately upon detection of the yarn defect 11, the distance from the yarn end to the yarn defect 11 is shortened.
  • the amount of reverse rotation of the package 50 can be smaller than the same in the second embodiment. Consequently, occurrence of malfunction due to reverse rotation of the package 50 can be reduced.
  • the time required from the detection of the yarn defect 11 till the winding is resumed is shorter than that of the first and second embodiments.
  • the second yarn monitoring device 70 is arranged upstream of the yarn pooling device 22.
  • yarn breakage due to malfunctioning of the air-jet spinning device 9 can be immediately detected.
  • an amount of the sliver 15 that is discarded can be reduced and a load on the front roller 20 can be prevented.
  • the spun yarn 10 can be monitored while traveling at a constant speed. Consequently, a monitoring accuracy of the second yarn monitoring device 70 can be enhanced.
  • the first yarn monitoring device 25a is not arranged, a fulcrum of traversing can be further separated from the winding drum 53, and thereby the traversing operation can be stabilized, and a variation in the tension on the spun yarn 10 can be reduced.
  • the spinning machine includes the air-jet spinning device 9, the yarn pooling device 22, and the winding section 26.
  • the air-jet spinning device 9 supplies the spun yarn 10.
  • the yarn pooling device 22 pools the spun yarn 10 supplied by the air-jet spinning device 9.
  • the winding section 26 winds the spun yarn 10 from the yarn pooling device 22 to form the package 50.
  • the winding section 26 includes the winding drum driving motor 54 that rotates the package 50, and stops the rotation of the package 50 before the spun yarn 10 is disconnected (first and second embodiments) or after the spun yarn 10 is disconnected but before the yarn end is wound onto the package 50 (third embodiment).
  • the yarn end can be positioned at the predetermined position because the spun yarn 10 is disconnected after the rotation of the package 50 is stopped. Furthermore, the spinning machine forms the package 50 while pooling the spun yarn 10, a length of the spun yarn 10 from the air-jet spinning device 9 to the winding section 26 increases. Hence, when the spun yarn 10 is disconnected upstream of the yarn pooling device 22, as in the third embodiment, the rotation of the package 50 can be easily stopped before the yarn end is wound onto the package 50.
  • the winding section 26 stops the rotation of the package 50 before the spun yarn 10 is disconnected.
  • the yarn joining device 23 joins the residual yarn 10c from the yarn pooling device 22 and the second yarn 10b from the winding section 26, and thereafter joins the first yarn 10a from the air-jet spinning device 9 and the second yarn 10b' from the winding section 26.
  • the winding section 26 winds the joined second yarn 10b' and stops the rotation of the package 50 such that the end of the spun yarn 10 is positioned at the predetermined position on the yarn traveling path.
  • the second catching and guiding device 28 can reliably catch the spun yarn 10 at the time of the second yarn joining. Furthermore, because the rotation of the package 50 is stopped once at the time of the first yarn joining, the package 50 is rotating at a relatively slower speed at the time of the second yarn joining. Hence, with a simple configuration the rotation of the package 50 can be stopped such that the yarn end is positioned at the predetermined position.
  • the second yarn monitoring device 70 is arranged between the air-jet spinning device 9 and the yarn pooling device 22, and monitors the status of the traveling spun yarn 10.
  • the air-jet spinning device 9 stops the spinning and cuts the spun yarn 10 upstream of the yarn pooling device 22.
  • the yarn joining device 23 joins the spun yarn 10 from the air-jet spinning device 9 and the spun yarn 10 from the winding section 26.
  • the second catching and guiding device 28 catches the spun yarn 10 from the winding section 26 and guides it to the yarn joining device 23.
  • the winding section 26 stops the rotation of the package 50 so that the yarn end formed by cutting the yarn by the air-jet spinning device 9 is positioned at the predetermined position on the yarn traveling path.
  • the air-jet spinning device 9 cuts the spun yarn 10 at upstream of the yarn pooling device 22
  • the time period from the time point when the spun yarn 10 is cut to the time point when the rotation of the package 50 is stopped can be prolonged.
  • the yarn end can be precisely positioned at the predetermined position.
  • the second catching and guiding device 28 can reliably catch the spun yarn 10 at the time of yarn joining.
  • the yarn pooling device 22 is equipped with the yarn pooling roller 41, a yarn pooling device that pools the spun yarn 10 by temporarily sucking the spun yarn 10 can be used.
  • the unit controller 90 of the spinning unit 2 performs the determination based on the detection result of the yarn monitoring device 25.
  • the determination can be performed by a controller that controls the yarn monitoring device 25 or by the main control device.
  • the control of other structural components, such as the winding section 26 and the like, can be performed by the main control device or another control device instead of by the unit controller 90.
  • the spinning machine according to the above embodiments does not include a delivery roller and a nip roller for pulling out the spun yarn 10 formed by the air-jet spinning device 9.
  • the spinning machine can include the delivery roller and the nip roller.
  • the yarn monitoring device 25 is arranged only downstream of the yarn pooling device 22.
  • the yarn monitoring device 25 can, however, be arranged only upstream of the yarn pooling device 22 or both upstream and downstream of the yarn pooling device 22 and still the same process procedure (for example, the process of stopping the rotation of the package 50 before cutting the spun yarn 10 when a yarn defect is detected) can be performed.
  • the various devices are arranged such that the package 50 is formed at a position that is above the spinning unit 2.
  • the various devices can, however, be arranged such that the package 50 is formed at a position that is below the spinning unit 2.
  • the yarn winding machine can be an automatic winder or the like. In the automatic winder, the structure that unwinds a yarn from a yarn supplying bobbin will correspond to the yarn supplying section.
  • a yarn winding machine includes a yarn supplying section, a yarn pooling device, and a winding section.
  • the yarn supplying section supplies a yarn.
  • the yarn pooling device pools the yarn supplied by the yarn supplying section.
  • the winding section winds the yarn from the yarn pooling device to form a package.
  • the winding section includes a rotation driving unit that rotates the package. The winding section causes the rotation driving unit to stop the rotation of the package before the yarn is disconnected or after the yarn is disconnected but before a yarn end is wound onto the package.
  • the yarn end can be positioned at a predetermined position because the yarn is disconnected after the rotation of the package is stopped. Furthermore, because the yarn winding machine forms the package by winding the yarn from the yarn pooling device (that is, forms the package while pooling the yarn), a length of the yarn from the yarn supplying section to the winding section is long. Hence, when the yarn is disconnected upstream of the yarn pooling device, the rotation of the package can be easily stopped before the yarn end is wound onto the package.
  • the yarn winding machine includes a yarn monitoring device that monitors a state of the yarn. When the yarn monitoring device detects a yarn defect, the winding section stops the rotation of the package before the yarn is disconnected.
  • the yarn pooling device includes a yarn pooling roller that pools the yarn by winding it on an outer circumferential surface thereof.
  • the yarn pooled in the yarn pooling device that pools the yarn by sucking the yarn is long, there are chances that the yarn can become tangled inside the yarn pooling device.
  • the yarn pooling roller that pools the yarn by winding it on the outer circumferential surface thereof the yarn can be prevented from becoming tangled even if the pooled yarn is long.
  • a first yarn cutting device is arranged that cuts the yarn downstream of the yarn pooling device and upstream of the winding section when the yarn monitoring device detects the yarn defect.
  • the yarn winding machine includes a yarn joining device and a catching and guiding device.
  • the yarn joining device joins the yarn from the yarn supplying section and the yarn from the winding section.
  • the catching and guiding device catches the yarn from the winding section and guides the yarn to the yarn joining device.
  • the catching and guiding device catches the yarn end that is located away from a surface of the package, the probability of catching the yarn successfully in the yarn winding machine can be increased. Hence, the yarn joining can be performed efficiently.
  • the yarn joining device joins the yarn from the yarn pooling device and the yarn from the winding section, and thereafter joins the yarn from the yarn supplying section and the yarn from the winding section.
  • the winding section causes the rotation driving unit to rotate the package to wind the joined yarn onto the package, and thereafter stop the rotation of the package such that the end of the yarn is positioned at the predetermined position on the yarn traveling path.
  • the catching and guiding device can reliably catch the yarn at the time of the second yarn joining. Furthermore, because the rotation of the package is stopped once when performing the first yarn joining, the package is rotating at a relatively slower speed at the time of the second yarn joining. Hence, with a simple configuration the rotation of the package can be stopped such that the yarn end is arranged at the predetermined position.
  • the yarn winding machine includes a second yarn monitoring device, a second yarn cutting device, the yarn joining device, and the catching and guiding device.
  • the second yarn monitoring device is arranged between the yarn supplying section and the yarn pooling device and monitors the state of the yarn.
  • the second yarn cutting device cuts the yarn upstream of the yarn pooling device when the second yarn monitoring device detects the yarn defect.
  • the yarn joining device joins the yarn from the yarn supplying section and the yarn from the winding section.
  • the catching and guiding device catches the yarn from the winding section and guides the yarn to the yarn joining device.
  • the winding section stops the rotation of the package such that the yarn end formed by the cutting of the yarn by the second yarn cutting device is positioned at the predetermined position on the yarn traveling path.
  • the second yarn cutting device cuts the yarn upstream of the yarn pooling device, a longer time can be secured from the time point when the yarn is cut to the time point when the rotation of the package is stopped. Consequently, the yarn end can be precisely positioned at the predetermined position. Hence, the catching and guiding device can reliably catch the yarn for yarn joining.
  • the yarn winding machine includes a controller that controls at least the yarn pooling device and the winding section.
  • a yarn winding method includes a winding step and a stopping step. At the winding step, the yarn is wound onto the package while the yarn is pooled in the yarn pooling device. At the stopping step, the rotation of the package is stopped before the yarn is disconnected or after the yarn is disconnected but before the yarn end is wound onto the package.
  • the yarn end can be positioned at the predetermined position because the yarn is disconnected after the rotation of the package is stopped. Furthermore, because the yarn winding machine winds the package while pooling the yarn, a length of the yarn from the yarn supplying section to the winding section is long. Hence, when the yarn is disconnected occurs upstream of the yarn pooling device, the rotation of the package can be easily stopped before the yarn end is wound onto the package.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP15170253.7A 2014-07-10 2015-06-02 Garnwickelmaschine und garnwickelverfahren Withdrawn EP2966021A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16166163.2A EP3072840B1 (de) 2014-07-10 2015-06-02 Garnwickelmaschine und garnwickelverfahren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014142085A JP2016016957A (ja) 2014-07-10 2014-07-10 糸巻取機及び糸巻取方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP16166163.2A Division EP3072840B1 (de) 2014-07-10 2015-06-02 Garnwickelmaschine und garnwickelverfahren

Publications (1)

Publication Number Publication Date
EP2966021A1 true EP2966021A1 (de) 2016-01-13

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Family Applications (2)

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EP16166163.2A Not-in-force EP3072840B1 (de) 2014-07-10 2015-06-02 Garnwickelmaschine und garnwickelverfahren
EP15170253.7A Withdrawn EP2966021A1 (de) 2014-07-10 2015-06-02 Garnwickelmaschine und garnwickelverfahren

Family Applications Before (1)

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EP16166163.2A Not-in-force EP3072840B1 (de) 2014-07-10 2015-06-02 Garnwickelmaschine und garnwickelverfahren

Country Status (3)

Country Link
EP (2) EP3072840B1 (de)
JP (1) JP2016016957A (de)
CN (1) CN105253713B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3502024A1 (de) * 2017-12-19 2019-06-26 Murata Machinery, Ltd. Spinnmaschine und verfahren zum fangen von fäden
EP3524556A1 (de) * 2018-02-13 2019-08-14 Murata Machinery, Ltd. Luftspinnmaschine und luftspinnverfahren

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106185470B (zh) * 2016-08-30 2022-07-22 江苏中天科技股份有限公司 一种用于松套管生产的光纤自动切断卷绕装置
JP2019026980A (ja) * 2017-08-02 2019-02-21 村田機械株式会社 空気紡績機
JP2019123590A (ja) * 2018-01-16 2019-07-25 村田機械株式会社 糸巻取機
JP2020143397A (ja) * 2019-03-06 2020-09-10 村田機械株式会社 屑糸発生量出力装置及び繊維機械
CN113638084B (zh) * 2021-10-15 2021-12-10 南通凌通纺织机械制造有限公司 一种包芯纱的生产装置

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EP2107025A2 (de) * 2008-03-31 2009-10-07 Murata Machinery, Ltd. Garnwickelvorrichtung und automatischer Wickler mit einer Garnwickelvorrichtung
JP2010180007A (ja) 2009-02-04 2010-08-19 Murata Machinery Ltd 糸処理方法及び紡績機
EP2573237A2 (de) * 2011-09-21 2013-03-27 Rieter Ingolstadt GmbH Spinnmaschine und Verfahren zur Unterbrechung der Garnherstellung an einer Spinnmaschine
DE102012102695A1 (de) * 2012-03-29 2013-10-02 Maschinenfabrik Rieter Ag Vorspinnmaschine mit einer Anordnung zur Detektion und Entfernung von Garnfehlern
EP2664572A2 (de) * 2012-05-18 2013-11-20 Murata Machinery, Ltd. Garnwickelmaschine und Garnwickelverfahren
EP2784193A1 (de) * 2013-03-19 2014-10-01 Maschinenfabrik Rieter Ag Spinnstelle einer Spinnmaschine sowie Verfahren zum Betrieb derselben

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Publication number Priority date Publication date Assignee Title
EP2107025A2 (de) * 2008-03-31 2009-10-07 Murata Machinery, Ltd. Garnwickelvorrichtung und automatischer Wickler mit einer Garnwickelvorrichtung
JP2010180007A (ja) 2009-02-04 2010-08-19 Murata Machinery Ltd 糸処理方法及び紡績機
EP2573237A2 (de) * 2011-09-21 2013-03-27 Rieter Ingolstadt GmbH Spinnmaschine und Verfahren zur Unterbrechung der Garnherstellung an einer Spinnmaschine
DE102012102695A1 (de) * 2012-03-29 2013-10-02 Maschinenfabrik Rieter Ag Vorspinnmaschine mit einer Anordnung zur Detektion und Entfernung von Garnfehlern
EP2664572A2 (de) * 2012-05-18 2013-11-20 Murata Machinery, Ltd. Garnwickelmaschine und Garnwickelverfahren
EP2784193A1 (de) * 2013-03-19 2014-10-01 Maschinenfabrik Rieter Ag Spinnstelle einer Spinnmaschine sowie Verfahren zum Betrieb derselben

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3502024A1 (de) * 2017-12-19 2019-06-26 Murata Machinery, Ltd. Spinnmaschine und verfahren zum fangen von fäden
EP3524556A1 (de) * 2018-02-13 2019-08-14 Murata Machinery, Ltd. Luftspinnmaschine und luftspinnverfahren

Also Published As

Publication number Publication date
EP3072840A1 (de) 2016-09-28
CN105253713B (zh) 2019-10-22
CN105253713A (zh) 2016-01-20
EP3072840B1 (de) 2018-03-21
JP2016016957A (ja) 2016-02-01

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