EP2690044A2 - Garnwicklungsvorrichtung - Google Patents

Garnwicklungsvorrichtung Download PDF

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Publication number
EP2690044A2
EP2690044A2 EP13178228.6A EP13178228A EP2690044A2 EP 2690044 A2 EP2690044 A2 EP 2690044A2 EP 13178228 A EP13178228 A EP 13178228A EP 2690044 A2 EP2690044 A2 EP 2690044A2
Authority
EP
European Patent Office
Prior art keywords
winding
yarn
speed
error
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.)
Granted
Application number
EP13178228.6A
Other languages
English (en)
French (fr)
Other versions
EP2690044A3 (de
EP2690044B1 (de
Inventor
Katsushi Minamino
Kazuhiko Nakade
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
Publication of EP2690044A2 publication Critical patent/EP2690044A2/de
Publication of EP2690044A3 publication Critical patent/EP2690044A3/de
Application granted granted Critical
Publication of EP2690044B1 publication Critical patent/EP2690044B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
    • 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
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/388—Preventing the yarn from falling off the edge 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
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to excessive tension or irregular operation of apparatus
    • 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 that winds a yarn into a package.
  • Yarn winding apparatuses that wind yarns into packages are known in the art.
  • a yarn winding device that includes a slub catcher that detects yarn irregularities is disclosed in Japanese Patent Application Laid-open No. H1-127566 .
  • this document also discloses a method for judging whether a yarn is cut between the winding drum and the package. Concretely, when the detection values of the slub catcher show a minute variation, it is judged that the yarn has been cut.
  • the slub catcher sometimes fails to detect the minute variations in the detection values. If such a detection failure occurs, the cut yarn is likely to get wound around the winding drum. Once the cut yarn gets wound around the winding drum, no more minute variations occur in the detection values, and therefore, the yarn actually wound around the winding drum actually goes undetected.
  • a yarn winding device includes a yarn supplying section that supplies a yarn; a winding section that winds the yarn into a package, the winding section including a winding drum that makes contact with an outer peripheral surface of the package and rotates; a yarn running speed detecting section that detects a yarn running speed of the yarn running between the yarn supplying section and the winding section; and an error detecting section that calculates a speed ratio by dividing the yarn running speed by a circumferential speed of the winding drum, and detects presence/absence of a winding error based on the speed ratio.
  • the bobbin holding section 2 holds a supply bobbin B upright.
  • the supply bobbin B is formed by a spinning machine at a previous stage, and is transported on a tray from the spinning machine to the automatic winder.
  • the yarn unwinding assisting device 3 controls, by use of a tube-shaped member arranged above the supply bobbin B, a balloon of the yarn Y that is unwound from the supply bobbin B.
  • the gate-type tension applying device 5 applies a predetermined tension on the running yarn Y with a pair of comb teeth-like gates, one of which is fixed and the other of which is movable.
  • the tension sensor 6 measures the tension of the yarn Y running along the yarn path.
  • the controller 14 performs feedback control of the gate-type tension applying device 5 so that a predetermined tension is applied on the running yarn Y based on the tension of the yarn Y measured by the tension sensor 6.
  • the pre-clearer 4 pre-regulates a passage of a yarn defect that is bigger than a prescribed size with a pair of regulating members arranged on two sides of the yarn path with a predetermined gap between them.
  • the yarn clearer 10 detects the yarn defect such as abnormal thickness of the yarn Y and/or a foreign substance included in the yarn Y during the winding operation of the yarn Y.
  • the yarn clearer 10 detects a speed of the yarn Y running between the bobbin holding section 2 and the winding section 12.
  • the lower yarn catching device 7 is supported in a manner to pivot upward and downward about an axial line ⁇ .
  • the lower yarn catching device 7 has a suction mouth at its end.
  • the upper yarn catching device 11 is supported in a manner to pivot upward and downward about an axial line ⁇ .
  • the upper yarn catching device 11 also has a suction mouth at its end.
  • the lower yarn catching device 7 pivots downward, sucks the yarn end from the supply bobbin B with the suction mouth, and thereafter pivots upward to guide the yarn end from the supply bobbin B to the splicer 8.
  • the upper yarn catching device 11 pivots upward, sucks the yarn end from the package P with the suction mouth, and thereafter pivots downward to guide the yarn end from the package P to the splicer 8.
  • the winding section 12 winds the yarn Y that is unwound from the supply bobbin B around a winding tube to form the package P, while traversing the yarn Y to and fro in an axial direction of a winding drum 16 (in a winding width direction of the package P).
  • the winding section 12 includes the winding drum 16 and a cradle 17 that functions as a supporting structure.
  • the winding drum 16 rotates the package P while making contact with an outer peripheral surface of the package P.
  • the winding drum 16 has a drum groove 16a formed over, along which the traversing is performed.
  • the cradle 17 rotatably supports the package P.
  • the yarn winding unit 1 can form a cone package or a cheese package (which are explained in detail later).
  • An angle ⁇ of the cradle 17 that is formed by an axial line of the winding drum 16 and an axial line of the package P can be adjusted.
  • a position of a contact point between the winding drum 16 and the package P (hereinafter, "driving point”) can be adjusted.
  • the cradle 17 brings the outer peripheral surface of the package P into contact with an outer peripheral surface of the winding drum 16 at an appropriate contact pressure.
  • the winding section 12 winds the yarn Y into the package P while traversing the yarn Y within a predetermined width.
  • the controller 14 controls the components of the yarn winding unit 1.
  • the controller 14 is an electronic control unit that includes, for example, a central processing unit (CPU), a read-only memory (ROM), a random access memory (RAM), and such-like.
  • the controller 14 receives information necessary for performing a control operation from the components forming the yarn winding unit 1.
  • the controller 14 includes at least an error detecting section 14a and a suspend command issuing section 14b as processing sections.
  • the processing sections of the controller 14 are in the form of computer programs, that is, software, stored in the ROM from which they are loaded to the RAM and executed by the CPU. Needless to say, the processing sections can be implemented as hardware.
  • the controller 14 exchanges various types of information with a control device that is shared by the yarn winding units 1 and that performs overall control of the automatic winder.
  • the error detecting section 14a detects the presence/absence of a winding error of the yarn Y in the winding section 12. Specifically, the error detecting section 14a detects the presence/absence of a winding error based on the yarn running speed detected by the yarn clearer 10 (explained in detail later).
  • Winding errors include at least either one of an error of the yarn Y wound around a driving section (winding drum 16) that drives the package P to rotate and an error, that is, deviation, of the driving point at which the package P is driven.
  • the suspend command issuing section 14b issues a command to the winding section 12, etc., to suspend the winding operation of the yarn Y when a winding error is detected by the error detecting section 14a.
  • the display 15 displays an operation status and such-like of the yarn winding unit 1.
  • the display 15 notifies detection of the winding error and/or details pertaining to the winding error.
  • the horizontal axis represents time, while the vertical axis represents speed (yarn running speed and circumferential drum speed (a circumferential speed of the winding drum 16)).
  • the cone package P1 is formed by winding the yarn Y around a conical winding tube.
  • a traverse guide 10a is arranged above the yarn clearer 10.
  • a diameter of the cone package P1 varies in an axial direction. Therefore, a length of the yarn Y wound in one rotation of the cone package P1 varies according to a winding position (traverse position) of the yarn Y on the cone package P1 in the axial direction of the cone package P1. Consequently, as shown in FIG. 3 , even at a constant number of rotations of the cone package P1, the yarn running speed varies periodically as the traverse position changes due to traversing of the yarn Y.
  • the error detecting section 14a counts the number of periodic variations of the yarn running speed in a predetermined range (Step S2).
  • the error detecting section 14a can count the number of periodic variations by the following method.
  • the horizontal axis represents time
  • the vertical axis represents speed (yarn running speed and circumferential drum speed).
  • the circumferential drum speed increases, and the yarn running speed increases while varying periodically with the circumferential drum speed substantially as its center.
  • the period ⁇ 1 of the periodic variations in the yarn running speed becomes shorter, while the amplitude A1 becomes larger.
  • the amplitude A1 can be defined as a total amount of increase/decrease with the circumferential drum speed as the center (total of a speed difference A1a and a speed difference A1b).
  • the circumferential drum speed is substantially constant, and the yarn running speed varies periodically with the circumferential drum speed substantially as its center.
  • the period ⁇ 1 and the amplitude A1 are substantially constant in the constant winding speed phase. Therefore, when counting the number of periodic variations of the yarn running speed based on the speed data within a certain time period, different methods need to be adopted for the accelerated winding phase and the constant winding speed phase.
  • the horizontal axis represents winding length of the yarn Y
  • the vertical axis represents speed.
  • the error detecting section 14a converts the speed data determined per unit time period (see FIGS. 5 and 6 ) into speed data determined per unit winding length of the yarn Y.
  • a period ⁇ 2 is substantially constant both in the accelerated winding phase and the constant winding speed phase.
  • the winding length of the yarn Y can be measured by, for example, the yarn clearer 10.
  • the horizontal axis represents winding length of the yarn Y
  • the vertical axis represents speed ratio (the yarn running speed divided by the circumferential drum speed).
  • the error detecting section 14a calculates the speed ratio by dividing the yarn running speed by the circumferential drum speed, thereby converting the speed data into the speed ratio.
  • the speed ratio varies periodically about 1 in both the accelerated winding phase and the constant winding speed phase.
  • the amplitude A2 of the speed ratio is substantially constant in both the accelerated winding phase and the constant winding speed phase.
  • the number of periodic variations can be counted by the same method, regardless of the accelerated winding phase or the constant winding speed phase.
  • the order of conversion of the speed data relative to the time period into the speed data relative to the winding length of the yarn Y and the conversion of the speed data into the speed ratio can be reversed.
  • the yarn running speed determined by the yarn clearer 10 and the speed ratio calculated based on the yarn running speed can include various types of periodic variation components.
  • wavelengths (winding lengths) ⁇ 1 and ⁇ 2 per periodic variation cycle are equivalent to the winding length of the yarn Y being traversed to and fro in one trip for a winding width.
  • a periodic variation having a wavelength smaller than the wavelength ⁇ 1 or ⁇ 2 this is produced not due to the change in the traverse position but is produced due to, for example, the drum groove 16a.
  • Such a periodic variation becomes a noise when counting the number of periodic variations.
  • a moving average is determined for the yarn running speed and/or the speed ratio to average out values at a plurality of sampling points, and thereby data with reduced noise as shown in FIG. 3 can be obtained.
  • a predetermined threshold value n1 can be preset corresponding to the speed ratio. Among the speed ratios in a predetermined range, those peak values larger than the threshold value n1 on the high speed side can be counted, and the number of such peak values can be determined as the number of periodic variations.
  • the predetermined range for counting the number of periodic variations should be a multiple of the winding length of the yarn Y in one trip of being traversed to and fro between a smaller diameter end and a larger diameter end of the cone package P1 (i.e., the winding width).
  • the error detecting section 14a judges whether the calculated number of periodic variations is within a normal range (Step S3). For example, the error detecting section 14a judges that the number of periodic variations counted at Step S2 is within the normal range if the count is greater than a predetermined value n2 and not within the normal range if the count is less than or equal to the predetermined value n2.
  • the error detecting section 14a judges that the yarn Y is being wound normally, and allows the winding operation of the yarn Y to be continued while concurrently detecting the presence/absence of a winding error. On the other hand, if it is judged at Step S3 that the number of periodic variations is not within the normal range, the error detecting section 14a judges that a winding error, such as the yarn Y wound around the winding drum 16, has occurred. In this event, the suspend command issuing section 14b issues a command to the winding section 12 to suspend the winding operation of the yarn Y.
  • the controller 14 issues a command to the display 15 to notify detection of a winding error and/or details pertaining to the winding error (Step S4).
  • An operator can read the content on the display 15 and take necessary steps to remove the cause of the winding error.
  • the yarn winding unit 1 is caused to resume the winding operation of the yarn Y while concurrently detecting the presence/absence of a winding error.
  • the speed of the yarn Y running between the bobbin holding section 2 and the winding section 12 is detected, and a winding error is detected based on this yarn running speed.
  • the error detecting section 14a detects a winding error by judging whether the number of periodic variations in the yarn running speed detected in the predetermined range by the yarn clearer 10 is less than or equal to the predetermined value.
  • the error detecting section 14a calculates the speed ratio by dividing the yarn running speed by the circumferential speed of the winding drum 16, and detects a winding error based on the speed ratio. Consequently, the same detection method can be adopted regardless of whether the cone package P1 is being wound in the accelerated winding phase or the constant winding speed phase (that is, regardless of whether the winding drum 16 is being rotated in an accelerated rotation phase or a constant rotation speed phase).
  • the yarn winding unit 1 further includes the display 15 that notifies the winding error detected by the error detecting section 14a. Consequently, the operator can be notified in the event of a winding error.
  • the yarn winding unit 1 further includes the suspend command issuing section 14b that issues a command to the winding section 12 to suspend the winding operation of the yarn Y when a winding error is detected by the error detecting section 14a. Consequently, the winding error can be kept from escalating.
  • the number of periodic variations in the yarn running speed can be counted based on the speed data relative to the time period in a predetermined time range.
  • a method by which the yarn winding unit 1 detects whether the driving point is shifting toward the smaller diameter end or toward the larger diameter end during the winding of the yarn Y into the cone package P1 is explained below.
  • the circumference of the cone package P1 that is in contact with the winding drum 16 is longer than the circumference of the cone package P1 when the driving point is located at the center L2. This reduces the number of rotations of the cone package P1 per rotation of the winding drum 16. Accordingly, when the driving point is located at the larger diameter end L3, the region in which the periodic variations have occurred in the yarn running speed shifts toward a lower speed side compared to the case where the driving point is located at the center L2.
  • the error detecting section 14a first samples the speed data (the yarn running speed and the circumferential drum speed). Thereafter, as explained above, the error detecting section 14a converts the speed data relative to the time period into the speed data relative to the winding length, also converts the speed data into the speed ratio, and reduces the noise by determining the moving average.
  • the error detecting section 14a judges whether the region of the speed ratio in a predetermined range is shifted too far toward the higher speed side or toward the lower speed side.
  • the predetermined range is determined as a multiple of (for example, twice) the winding length of the yarn Y traversed to and fro in one trip for the winding width. For example, if a minimum value of the speed ratio in the predetermined range is greater than a given threshold value x, the error detecting section 14a judges that the region of the speed ratio is shifted toward the higher speed side (that is, the driving point is located toward the smaller diameter end L1).
  • the error detecting section 14a judges that the region of the speed ratio is shifted toward the lower speed side (that is, the driving point is located toward the larger diameter end L3).
  • the suspend command issuing section 14b issues a command to the winding section 12 to suspend the winding operation of the yarn Y.
  • the controller 14 issues a command to the display 15 to notify detection of a winding error and/or details pertaining to the winding error, thereby enabling the operator to read the content on the display 15 and take necessary steps to remove the cause of the winding error.
  • the yarn winding unit 1 is caused to resume the winding operation of the yarn Y while concurrently detecting the presence/absence of a winding error.
  • the error detecting section 14a judges that the yarn Y is being wound normally, allowing the winding operation of the yarn Y to be continued while concurrently detecting the presence/absence of a winding error.
  • the error detecting section 14a judges whether the region in which the periodic variations have occurred in the yarn running speed detected by the yarn clearer 10 is shifted toward the higher speed side or toward the lower speed side with respect to the predetermined region. Accordingly, the error detecting section 14a suitably detects the winding error, thereby preventing stitching, etc.
  • the error detecting section 14a calculates the speed ratio by dividing the yarn running speed by the circumferential speed of the winding drum 16, and detects the winding error based on the speed ratio. Consequently, the same detection method can be adopted regardless of the accelerated winding phase or the constant winding speed phase of the cone package P1 (that is, regardless of the accelerated rotation phase or the constant rotation speed phase of the winding drum 16).
  • whether the region in which the periodic variations have occurred in the yarn running speed is shifted toward one end can be judged in a predetermined time range based on the speed data relative to the time period.
  • the cheese package P2 is formed by winding the yarn Y around a winding tube whose outer circumferential surface is substantially cylindrical.
  • the yarn Y is wound into the cheese package P2 by being traversed.
  • the yarn running speed substantially equals the circumferential speed of the winding drum 16. More specifically, because the winding drum 16 has a small outer diameter at the drum groove 16a, when the yarn Y becomes wound around the drum groove 16a, the yarn running speed becomes lower than the circumferential drum speed. That is, a running speed V d of the yarn Y when the yarn Y is wound around the winding drum 16 satisfies following relationship: V d ⁇ V 0
  • the error detecting section 14a first samples the speed data (the yarn running speed and the circumferential drum speed). The error detecting section 14a then judges whether the yarn running speed is lower than or equal to the set circumferential speed V 0 of the winding drum 16 over a predetermined time period (for example, a time period in which the yarn Y is traversed to and fro for the winding width in one or more trip). The circumferential speed V 0 of the winding drum 16 that is used in a judgment operation is set by the controller 14.
  • the error detecting section 14a judges that a winding error, such as the yarn Y wound around the winding drum 16, has occurred.
  • the suspend command issuing section 14b issues a command to the winding section 12 to suspend the winding operation of the yarn Y.
  • the controller 14 issues a command to the display 15 to notify detection of a winding error and/or details pertaining to the winding error, thereby enabling the operator to read the content on the display 15 and take necessary steps to remove the cause of the winding error or such-like.
  • the yarn winding unit 1 After the cause of the winding error is removed, the yarn winding unit 1 is caused to resume the winding operation of the yarn Y while concurrently detecting the presence/absence of a winding error.
  • the error detecting section 14a judges that the yarn Y is being wound normally, allowing the winding operation of the yarn Y to be continued while concurrently detecting the presence/absence of a winding error.
  • the error detecting section 14a judges whether the yarn running speed detected by the yarn clearer 10 is lower than or equal to the predetermined speed when the yarn Y is being wound into a cheese package P2 by the winding section 12. In this manner, a winding error can be suitably detected.
  • the error detecting section 14a detects that a winding error has occurred when the yarn running speed is lower than or equal to the set circumferential speed V 0 of the winding drum 16 over a predetermined time period, a threshold value can be easily set.
  • the error detecting section 14a can calculate the speed ratio, and judge, based on this speed ratio, whether the yarn running speed is lower than or equal to the set circumferential speed V 0 over the predetermined time period (that is, judge whether the speed ratio is less than or equal to 1). In this case, the same detection method can be adopted regardless of the accelerated winding phase or the constant winding speed phase of the cheese package P2 (that is, regardless of the accelerated rotation phase or the constant rotation speed phase of the winding drum 16).
  • the yarn clearer 10 that detects a yarn defect also functions as the yarn running speed detecting section.
  • a dedicated device that detects the yarn running speed can be arranged as the yarn running speed detecting section.
  • the winding operation when a winding error is detected, the winding operation is first suspended and then occurrence of the winding error is displayed on the display 15.
  • the suspension of the winding operation of the yarn Y and the display of the occurrence of the winding error can be performed simultaneously, or the display of the occurrence of the winding error can be performed before the suspension of the winding operation of the yarn Y.
  • the yarn Y wound around the winding drum 16 when the yarn Y wound around the winding drum 16 is detected as a winding error, the yarn Y can be cut to suspend the winding operation of the yarn Y.
  • the winding drum 16 having the drum groove 16a is used.
  • a winding drum (contact roller) without a drum groove can also be used.
  • the winding section 12 can include an arm-type traverse device, a belt-type traverse device, a rod-type traverse device, or the like that can function as a traverse mechanism.
  • the yarn winding unit 1 that forms the automatic winder is adopted as the yarn winding device.
  • any yarn winding unit for example, air spinning machine
  • a winding drum can be adopted.
  • the display 15 is used as the notification section.
  • a sound output device such as a loudspeaker, can also be used as the notification section.
  • a driving device such as a motor, can be provided on the cradle 17 so that the driving device can drive the cradle 17 to perform an adjustment of the angle ⁇ .
  • the error detecting section 14a judges that the region of periodic variations in the yarn running speed is shifted toward the higher speed side or toward the lower speed side with respect to the predetermined region, it issues a command to the cradle 17 to adjust the angle ⁇ formed by the axial line of the winding drum 16 and the axial line of the cone package P1 such that the region of the periodic variations can fit within the predetermined region. Consequently, the driving point shifted toward the smaller diameter end or toward the larger diameter end can be automatically resolved.
  • the yarn winding unit 1 is capable of forming any of the cone packages P1 and the cheese packages P2.
  • the yarn winding unit 1 can be one that forms only the cone packages P1 or only the cheese packages P2.
  • the upstream side of the tension sensor 6 along the yarn path is at the bottom and the downstream side is at the top; however, this arrangement can be reversed.
  • any tension applying device such as the so-called disc-type tension applying device, that can apply a predetermined tension on the yarn Y running along the yarn path can be employed.
  • the accelerated winding phase and the constant winding speed are used merely for explaining the sequence of the winding operation, and as such, there is no setting for an accelerated winding mode or a constant winding speed mode in the present embodiment.
  • a yarn winding device includes a yarn supplying section that supplies a yarn; a winding section that winds the yarn into a package, the winding section including a winding drum that makes contact with an outer peripheral surface of the package and rotates; a yarn running speed detecting section that detects a yarn running speed of the yarn running between the yarn supplying section and the winding section; and an error detecting section that calculates a speed ratio by dividing the yarn running speed by a circumferential speed of the winding drum, and detects presence/absence of a winding error based on the speed ratio.
  • the error detecting section detects, as the winding error, at least either one of an error that is winding of the yarn around the winding drum and an error that is deviation of a driving point at which the package is driven.
  • the error detecting section detects that the winding error has occurred if the number of periodic variations in the speed ratio in a predetermined range is less than or equal to a predetermined value.
  • the yarn running speed varies periodically during the winding due to the variation of a diameter of an outer peripheral surface of the package in an axial direction. If, for example, the yarn winds around the winding drum, the periodic variations of the yarn running speed will not occur.
  • the error detecting section detects that the winding error has occurred if a region in which periodic variations have occurred in the speed ratio is shifted toward a higher speed side or toward a lower speed side with respect to a predetermined region.
  • the yarn is likely to be wound around a portion outside the ends of the package in the axial direction, leading to stitching, etc. Consequently, by determining whether the region in which the periodic variations have occurred in the speed ratio is shifted toward the higher speed side than a predetermined region or toward the lower speed side than the predetermined region, a winding error can be suitably detected to prevent stitching, etc.
  • the error detecting section detects that the winding error has occurred if the speed ratio is lower than or equal to a predetermined value.
  • the yarn is traversed so as to form a predetermined angle (traverse angle) relative to a circumferential direction of the package. Consequently, the yarn running speed is greater than the circumferential speed of the package.
  • the yarn running speed decreases.
  • a winding error can be suitably detected by calculating the speed ratio based on the yarn running speed and determining whether the speed ratio is less than or equal to a predetermined value.
  • the yarn winding device further includes a notification section that notifies occurrence of the winding error detected by the error detecting section. An operator can be notified of the winding error.
  • the yarn winding device further includes a suspend command issuing section that issues a command to the winding section to suspend a winding operation of the yarn when the winding error is detected by the error detecting section.
  • the winding error can thereby be kept from escalating.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Winding Filamentary Materials (AREA)
EP13178228.6A 2012-07-27 2013-07-26 Garnwicklungsvorrichtung Not-in-force EP2690044B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012167242A JP2014024652A (ja) 2012-07-27 2012-07-27 糸巻取装置

Publications (3)

Publication Number Publication Date
EP2690044A2 true EP2690044A2 (de) 2014-01-29
EP2690044A3 EP2690044A3 (de) 2015-12-16
EP2690044B1 EP2690044B1 (de) 2017-01-18

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EP13178228.6A Not-in-force EP2690044B1 (de) 2012-07-27 2013-07-26 Garnwicklungsvorrichtung

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JP (1) JP2014024652A (de)
CN (1) CN103572438B (de)

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DE102014011937A1 (de) * 2014-08-12 2016-02-18 Saurer Germany Gmbh & Co. Kg Vorrichtung zum Detektieren einer unerwünschten Fadenwickelbildung
DE102014011938A1 (de) * 2014-08-12 2016-02-18 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Vermeiden von Bildwicklungen beim Wickeln einer Kreuzspule
JP6656604B2 (ja) * 2017-01-13 2020-03-04 村田機械株式会社 糸切断制御装置、糸監視装置、及び糸巻取装置

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH01127566A (ja) 1987-11-13 1989-05-19 Murata Mach Ltd ドラム巻付防止方法

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