JP2013063839A - Yarn winding machine and yarn winding unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure allowing removal of defective portion of a spun yarn and a yarn splicing operation in a yarn splicing device to be efficiently performed, in a yarn winding machine provided with the yarn splicing device.SOLUTION: A fine spinning machine includes a spinning device 9, a winding device 13, a yarn splicing device 43, a yarn accumulating device 12, and a cutter 55. The spinning device 9 supplies a spun yarn 10. The winding device 13 winds the spun yarn 10 around a package 45. The yarn splicing device 43 splices a yarn end of the spun yarn 10 at a spinning device 9 side and a yarn end of the spun yarn 10 at a winding device 13 side, in a position between the spinning device 9 and the winding device 13 in a yarn traveling direction. The yarn accumulating device 12 temporality accumulates the spun yarn 10 in a position between the spinning device 9 and the yarn splicing device 43 in the yarn traveling direction. The cutter 55 cuts the spun yarn 10 in a position between the yarn accumulating device 12 and the yarn splicing device 43 in the yarn traveling direction.

Description

  The present invention mainly relates to a yarn winding machine for winding the supplied spun yarn around a package.

  This type of yarn winding machine is disclosed in Patent Document 1, for example. The spinning machine of Patent Document 1 includes a large number of spinning units, and each spinning unit includes a spinning device that supplies the spun yarn and a winding device that winds the supplied spun yarn to form a package. . A yarn slack eliminating device is arranged between the spinning device and the winding device, and this yarn slack eliminating device is configured to wind the spun yarn around the rotating slack eliminating roller and temporarily store it. Yes.

  A yarn clearer and a cutter are disposed between the spinning device and the yarn slack eliminating device. The yarn clearer is configured to monitor the thickness of the spun yarn that travels, and when a yarn defect is detected, the yarn is cut by the cutter to remove the yarn defect.

  The spinning machine disclosed in Patent Document 1 includes a yarn splicing cart, and this yarn splicing cart includes a yarn splicing device that splics the yarn on the spinning device side and the yarn on the package side. With this configuration, when a yarn breakage occurs in a spinning unit, or when the yarn clearer detects a yarn defect and cuts the yarn with a cutter, the yarn joining cart travels to the spinning unit and stops, and the yarn joining device Perform yarn splicing work. When the yarn joining operation is completed, the spinning operation in the spinning unit is resumed.

JP 2010-77576 A

  In the yarn winding machine including the yarn joining device as described above, there is a need to evaluate the quality of the spun yarn at the portion joined by the yarn joining device. If a yarn splicing failure can be detected, it is advantageous in that a defective package can be efficiently manufactured by removing the defective portion and automatically restarting the yarn splicing operation.

  In this regard, the configuration of Patent Document 1 has a layout in which a yarn slack eliminating device is disposed upstream of the yarn joining device in the yarn traveling direction, and a cutter is further disposed upstream thereof. Therefore, even if it can be detected that the yarn joining portion by the yarn joining device is defective, to remove the defective portion, the spun yarn is cut with the above cutter and further stored in the yarn slack eliminating device. It is necessary to wind up all of the spun yarn on the package side, reverse the package, pull out a defective portion of the yarn splicing, and splice the yarn with a yarn splicing device while removing the defective portion.

  In some cases, a spun yarn having a considerable length is stored in the yarn slack eliminating device, and it takes a long time to wind up all of the spun yarn around a package and pull it out again to a defective portion. Therefore, further improvement is necessary to improve the efficiency of the yarn splicing operation.

  The present invention has been made in view of the above circumstances, and an object thereof is to efficiently remove a defective portion of a spun yarn and perform piecing with a piecing device in a yarn winding machine including the piecing device. It is in providing the structure which can do.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to a first aspect of the present invention, a yarn winding machine having the following configuration is provided. That is, the yarn winding machine includes a yarn supplying device, a winding device, a yarn joining device, a yarn accumulating device, and a first cutting device. The yarn supplying device supplies spun yarn. The winding device winds the spun yarn around a package. The yarn joining device includes a yarn end of the spun yarn on the yarn feeding device side and a yarn end of the spun yarn on the winding device side at a position between the yarn feeding device and the winding device in the yarn traveling direction. Splice the yarn. The yarn storage device temporarily stores the spun yarn at a position between the yarn supplying device and the yarn joining device in the yarn traveling direction. The first cutting device cuts the spun yarn at a position between the yarn accumulating device and the yarn joining device in the yarn traveling direction.

  Thereby, when the spun yarn is cut by the first cutting device, the spun yarn wound by the winding device can be shortened. Therefore, since the length of the spun yarn that needs to be pulled out from the package for the yarn joining operation by the yarn joining device can be shortened, the efficiency of the yarn joining operation can be realized.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a monitoring device that monitors the spun yarn spliced by the yarn joining device at a position immediately downstream of the yarn joining device in the yarn traveling direction and detects an abnormality. When the monitor device detects an abnormality in the spun yarn, the first cutting device cuts the spun yarn.

  As a result, the yarn joining failure by the yarn joining device can be detected at an early stage by the monitor device, so that the spun yarn can be immediately cut by the first cutting device, and the yarn joining operation by the yarn joining device can be performed again. As a result, the winding efficiency of the package can be improved.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine further includes a second cutting device and a removing device. The second cutting device cuts the spun yarn supplied from the yarn supplying device to the yarn accumulating device. The removal device removes the spun yarn stored in the yarn storage device.

  Accordingly, the spun yarn on the downstream side of the yarn accumulating device can be cut by the first cutting device, and the spun yarn on the upstream side can be cut by the second cutting device. Therefore, the spun yarn stored in the yarn storage device can be easily removed by the removal device.

  The yarn winding machine preferably has the following configuration. That is, the yarn storage device includes a storage roller that stores the spun yarn by winding the spun yarn around an outer peripheral surface. The said removal apparatus is provided with a suction part and a drive part. The suction unit is disposed in the vicinity of the yarn storage device and sucks the spun yarn stored in the yarn storage device. The drive unit drives the yarn accumulating device in a direction that assists the suction of the spun yarn by the suction unit.

  Thereby, the spun yarn stored in the yarn storage device can be reliably removed in a short time by actively supplying and sucking the spun yarn to the suction portion.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a detection unit that detects completion of removal of the spun yarn from the yarn storage device. When the detection unit detects completion of removal of the spun yarn, the yarn splicing device performs splicing of the spun yarn.

  Thereby, when the yarn joining device performs the yarn joining operation, unnecessary spun yarn stored in the yarn accumulating device can be prevented from being mixed. Accordingly, it is possible to prevent the failure of the yarn joining operation and the deterioration of the package quality.

  In the yarn winding machine, the yarn feeding device is preferably a spinning device that generates a spun yarn by spinning a fiber bundle with an air flow.

  That is, in a configuration in which a pneumatic spinning device is used as the yarn supplying device and the spun yarn continuously generated at a high speed in the spinning device is stored in the downstream yarn storing device, the yarn is stored in the yarn storing device. There is a tendency that the length of the spun yarn becomes considerably long. Therefore, in such a yarn winding machine, it is more preferable that the spun yarn is cut between the yarn accumulating device and the yarn joining device as described above.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a plurality of yarn winding units arranged side by side and a carriage. Each yarn winding unit includes at least the yarn feeding device, the winding device, and the yarn storage device. The carriage is provided so as to be able to travel with respect to the plurality of yarn winding units, and includes at least one of the first cutting device and the yarn joining device.

  Thereby, in the yarn winding machine provided with the carriage, the yarn joining operation of the yarn joining device can be efficiently performed, so that the winding efficiency of the package can be improved as a whole.

  According to a second aspect of the present invention, a yarn winding unit having the following configuration is provided. That is, the yarn winding unit includes a yarn supplying device, a winding device, a yarn joining device, a yarn accumulating device, and a first cutting device. The yarn supplying device supplies spun yarn. The winding device winds the spun yarn around a package. The yarn joining device is provided at a position between the yarn feeding device and the winding device in the yarn traveling direction, and the yarn end of the spun yarn on the yarn feeding device side and the yarn of the spun yarn on the winding device side. Join the ends together. The yarn storage device is provided at a position between the yarn supplying device and the yarn joining device in the yarn traveling direction, and temporarily stores the spun yarn. The first cutting device is provided at a position between the yarn accumulating device and the yarn joining device in the yarn traveling direction, and cuts the spun yarn.

  Thereby, when the spun yarn is cut by the first cutting device, the spun yarn wound by the winding device can be shortened. Accordingly, the length of the yarn that needs to be pulled out from the package for the yarn joining operation by the yarn joining device can be shortened, so that the efficiency of the yarn joining operation can be realized.

  The yarn winding unit preferably has the following configuration. That is, the yarn winding unit includes a monitoring device that monitors the spun yarn spliced by the yarn joining device at a position immediately downstream of the yarn joining device in the yarn traveling direction and detects an abnormality. When the monitor device detects an abnormality in the spun yarn, the first cutting device cuts the spun yarn.

  As a result, the yarn joining failure by the yarn joining device can be detected at an early stage by the monitor device, so that the spun yarn can be immediately cut by the first cutting device, and the yarn joining operation by the yarn joining device can be performed again. As a result, the winding efficiency of the package can be improved.

  The yarn winding unit preferably has the following configuration. That is, the yarn winding unit further includes a second cutting device and a removing device. The second cutting device cuts the spun yarn supplied from the yarn supplying device to the yarn accumulating device. The removal device removes the spun yarn stored in the yarn storage device.

  Accordingly, the spun yarn on the downstream side of the yarn accumulating device can be cut by the first cutting device, and the spun yarn on the upstream side can be cut by the second cutting device. Therefore, the spun yarn stored in the yarn storage device can be easily removed by the removal device.

  The yarn winding unit preferably has the following configuration. That is, the yarn storage device includes a storage roller that stores the spun yarn by winding the spun yarn around an outer peripheral surface. The said removal apparatus is provided with a suction part and a drive part. The suction unit is disposed in the vicinity of the yarn storage device and sucks the spun yarn stored in the yarn storage device. The drive unit drives the yarn accumulating device in a direction that assists the suction of the spun yarn by the suction unit.

  Thereby, the spun yarn stored in the yarn storage device can be reliably removed in a short time by actively supplying and sucking the spun yarn to the suction portion.

  The yarn winding unit preferably has the following configuration. That is, the yarn winding unit includes a detection unit that detects completion of the removal of the spun yarn from the yarn storage device. When the detection unit detects completion of removal of the spun yarn, the yarn splicing device performs splicing of the spun yarn.

  Thereby, when the yarn joining device performs the yarn joining operation, unnecessary spun yarn stored in the yarn accumulating device can be prevented from being mixed. Accordingly, it is possible to prevent the failure of the yarn joining operation and the deterioration of the package quality.

  In the yarn winding unit, the yarn supplying device is preferably a spinning device that generates a spun yarn by spinning a fiber bundle with an air flow.

  That is, in a configuration in which a pneumatic spinning device is used as the yarn supplying device and the spun yarn continuously generated at a high speed in the spinning device is stored in the downstream yarn storing device, the yarn is stored in the yarn storing device. There is a tendency that the length of the spun yarn becomes considerably long. Therefore, in such a yarn winding unit, it is more preferable that the spun yarn is cut between the yarn accumulating device and the yarn joining device as described above.

  According to the 3rd viewpoint of this invention, the yarn winding machine provided with two or more said yarn winding units is provided.

  Thereby, since the yarn joining operation of the yarn joining device can be efficiently performed in each yarn winding unit, the winding efficiency of the package in the yarn winding machine can be improved as a whole.

1 is a front view showing an overall configuration of a spinning machine according to an embodiment of the present invention. The side view of a spinning unit. Sectional drawing of a spinning apparatus. The side view which shows a mode that the yarn defect was detected by the yarn quality measuring device during winding of the spun yarn by the spinning unit, and the spun yarn was cut by the spinning device. FIG. 5 is a side view showing a state in which the yarn joining carriage stops at the spinning unit and sucks and captures the yarn end on the spinning device side and the yarn end on the package side with the suction pipe and the suction mouse from the state of FIG. 4. FIG. 6 is a side view showing a state where the yarn joining cart guides the yarn end of the spun yarn to the yarn joining device from the state of FIG. 5. The side view which shows a mode that the spun yarn is monitored by the yarn joining quality monitor immediately after the yarn joining by the yarn joining device. The side view which shows a mode that the yarn splicing quality monitor detected the yarn splicing defect in the state of FIG. 7, and each spun yarn was cut | disconnected by the cutter and the spinning device. The side view which shows a mode that the yarn storage roller is reversely rotated from the state of FIG. 8 to unwind the spun yarn and remove it by the yarn suction device.

  Next, a spinning machine (spinning machine) according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an overall configuration of a spinning machine 1 according to an embodiment of the present invention. FIG. 2 is a side view of the spinning unit 2. FIG. 3 is a cross-sectional view of the spinning device 9. 4 to 7, when a yarn defect is detected by the yarn quality measuring device 59 of the spinning unit 2 and the spun yarn 10 is cut by the spinning device 9, the abnormal portion is removed and the yarn splicing is performed. The steps until the yarn joining operation by the device 43 is performed and the quality of the portion where the yarn joining is performed are evaluated by the yarn joining quality monitor 47 are shown in order. FIG. 8 is a side view showing a state in which the yarn joining quality monitor 47 detects a yarn joining defect in the state of FIG. 7 and the spun yarn 10 is cut by the cutter 55 and the spinning device 9, respectively. FIG. 9 is a side view showing a state in which the spun yarn 10 is unwound by reversely rotating the yarn accumulating roller 14 from the state of FIG.

  A spinning machine 1 as a spinning machine shown in FIG. 1 includes a large number of spinning units (yarn winding units) 2, a yarn splicing cart (cart) 3, a blower box 80, and a prime mover box 5. ing.

  As shown in FIG. 2, each spinning unit 2 includes a draft device 7, a spinning device (yarn feeding device) 9, a yarn storage device 12, and a winding device 13, which are arranged in order from upstream to downstream. Are provided as main components. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the fiber bundle and yarn during spinning. Each spinning unit 2 spins the fiber bundle 8 sent from the draft device 7 by the spinning device 9 to generate the spun yarn 10, and winds the spun yarn 10 by the winding device 13 to form the package 45. .

  The draft device 7 is provided in the vicinity of the upper end of the frame 6 provided in the spinning machine 1. The draft device 7 includes four draft rollers: a back roller 16, a third roller 17, a middle roller 19 on which a rubber apron belt 18 is mounted, and a front roller 20 in order from the upstream side. Each draft roller is rotationally driven at a predetermined rotational speed. The draft device 7 has opposing rollers arranged to face each draft roller.

  A sliver 15 that is a raw material of the fiber bundle 8 is supplied to the draft device 7 from a sliver case (not shown) via a sliver guide. The draft device 7 stretches (drafts) the sliver 15 to a predetermined width by sandwiching the sliver 15 between a rotating draft roller and a counter roller facing the sliver 15. Is configured to do.

  A spinning device 9 is disposed immediately downstream of the front roller 20. The fiber bundle 8 drafted by the draft device 7 is supplied to the spinning device 9. The spinning device 9 twists the fiber bundle 8 supplied from the draft device 7 to generate the spun yarn 10.

  In the spinning machine 1 of the present embodiment, a pneumatic apparatus that twists the fiber bundle 8 using a swirling airflow is adopted as the spinning device 9. As shown in FIG. 3, the spinning device 9 mainly includes a nozzle block 35, a hollow guide shaft body 23, and a fiber guide portion 22.

  A spinning chamber 26 is formed between the nozzle block 35 and the hollow guide shaft body 23. The nozzle block 35 is formed with an air ejection nozzle 27 that ejects air into the spinning chamber 26. The fiber guide portion 22 is formed with an introduction port 21 for introducing the fiber bundle 8 into the spinning chamber 26. The air ejection nozzle 27 is configured to eject air into the spinning chamber 26 and generate a swirling airflow.

  With this configuration, the fiber bundle 8 supplied from the draft device 7 is guided into the spinning chamber 26 by the fiber guide portion 22 having the introduction port 21. In the spinning chamber 26, the fiber bundle 8 is swung around the hollow guide shaft body 23 by the swirling airflow, and thereby twisted to become the spun yarn 10. The spun yarn 10 to which the twist is applied passes through a yarn passage 29 formed at the center of the hollow guide shaft 23 and is sent out of the spinning device 9 from a downstream yarn outlet (not shown).

  The introduction port 21 is provided with a needle-shaped guide needle 22a with its tip directed toward the spinning chamber 26. The fiber bundle 8 introduced from the introduction port 21 is guided into the spinning chamber 26 so as to be wound around the guide needle 22a. Thereby, the state of the fiber bundle 8 introduced into the spinning chamber 26 can be stabilized. Further, since the fiber bundle 8 is guided so as to be wound around the guide needle 22 a in this way, even if twist is added to the fiber in the spinning chamber 26, the twist propagates upstream from the fiber guide portion 22. Is prevented. Thereby, the twist by the spinning device 9 can be prevented from affecting the draft device 7. However, the guide needle 22a may be omitted, and the downstream end of the fiber guide portion 22 may serve as the guide needle 22a.

  As shown in FIG. 2, a winding device 13 is disposed on the downstream side of the spinning device 9. The winding device 13 includes a cradle arm 71 supported so as to be swingable around a support shaft 73. The cradle arm 71 can rotatably support a bobbin 48 for winding the spun yarn 10.

  The winding device 13 includes a winding drum 72 and a traverse device 75. The winding drum 72 is configured to be able to be driven in contact with the outer peripheral surface of the package 45 formed by winding the bobbin 48 and the spun yarn 10 thereon. The traverse device 75 includes a traverse guide 76 that can be engaged with the spun yarn 10. In this configuration, the winding drum 72 is driven by an electric motor (not shown) while the traverse guide 76 is reciprocated by a driving means (not shown), thereby rotating the package 45 in contact with the winding drum 72 and spinning the yarn 10. It is designed to wind up while traversing.

  As shown in FIGS. 1 and 2, the yarn joining cart 3 includes a yarn joining device 43, a suction device (a suction pipe 44 and a suction mouse 46), a yarn joining quality monitor 47, a cutter 55, and a reverse drive mechanism 49. And. The reverse rotation drive mechanism 49 includes a support arm 91 configured to be able to advance and retract from the yarn splicing carriage 3 with respect to the winding device 13, and a reverse rotation roller 92 supported at the tip of the support arm 91.

  When yarn breakage or yarn breakage occurs in a spinning unit 2, the yarn joining cart 3 travels on the rail 41 to the spinning unit 2 and stops. The suction pipe 44 sucks and captures the yarn end sent from the spinning device 9 and guides it to the yarn joining device 43 while rotating in the vertical direction about the axis. The suction mouse 46 sucks the yarn end from the package 45 supported by the winding device 13 and guides it to the yarn joining device 43 while rotating in the vertical direction about the shaft. In the spinning unit 2 in which yarn breakage or yarn cut has occurred, the cradle arm 71 is rotated by a drive mechanism (not shown) so that the package 45 is not in contact with the winding drum 72. At this time, the reverse rotation drive mechanism 49 advances the support arm 91 toward the winding device 13 to bring the reverse rotation roller 92 at the tip thereof into contact with the outer peripheral surface of the package 45. In this state, the reverse rotation roller is driven by a motor (not shown). By driving 92, the package 45 is rotated in the direction of unwinding the spun yarn 10. The driving time of the reverse rotation roller 92 at this time is set so that when the spun yarn 10 has a portion to be removed, the suction mouth 46 draws the spun yarn 10 having a sufficient length so that the spun yarn 10 can be drawn out. The The yarn joining device 43 performs yarn joining between the yarn ends thus guided.

  A yarn splicing quality monitor (monitor device) 47 for measuring the quality of the spun yarn 10 spliced by the yarn splicing device 43 is disposed immediately downstream of the yarn splicing device 43. That is, even if the yarn joining device 43 performs the yarn joining operation, the portion where the yarn is joined does not always have satisfactory quality. In particular, in this embodiment, as the yarn joining device 43, an air type device is used in which each yarn end is untwisted by a swirling air flow and then twisted. The quality of the joint will be affected. Therefore, in this embodiment, the quality of the yarn joining position is detected by the yarn joining quality monitor 47, and when the standard is not satisfied, the yarn joining operation of the yarn joining device 43 is performed again.

  The yarn splicing quality monitor 47 can monitor the thickness of the spun yarn 10 including the portion where the yarn splicing is performed by the yarn splicing device 43 using an optical or capacitance sensor (not shown). The yarn joining quality monitor 47 is configured to transmit a yarn joining failure signal to a unit controller (not shown) when there is an abnormality in the thickness of the spun yarn 10 or the like.

  A cutter 55 is disposed immediately upstream of the yarn joining device 43. When the unit controller receives the yarn joining failure signal, the unit controller immediately cuts the spun yarn 10 with the cutter 55 in order to redo the yarn joining operation. Details of redoing the yarn joining operation will be described later.

  A yarn storage device 12 is provided between the spinning device 9 and the winding device 13. As shown in FIG. 2, the yarn storage device 12 includes a yarn storage roller (storage roller) 14 and an electric motor (drive unit) 25 that rotationally drives the yarn storage roller 14.

  The yarn accumulating roller 14 is configured so that a certain amount of spun yarn 10 can be wound around the outer peripheral surface and temporarily accumulated. When the spun yarn 10 is wound around the outer peripheral surface of the yarn accumulating roller 14, the yarn accumulating roller 14 is rotated at a predetermined rotation speed, whereby the spun yarn 10 is pulled out from the spinning device 9 at a predetermined speed and conveyed downstream. can do. Further, since the yarn storage device 12 is configured to temporarily store the spun yarn 10 on the outer periphery of the yarn storage roller 14, it functions as a kind of buffer between the spinning device 9 and the winding device 13. To do. Thereby, it is possible to eliminate a problem (for example, slack of the spun yarn 10) when the spinning speed in the spinning device 9 and the winding speed in the winding device 13 do not match for some reason.

  The electric motor 25 normally rotates the yarn accumulating roller 14 in the direction in which the spun yarn 10 is wound, but may be rotated in the opposite direction, that is, the direction in which the spun yarn 10 is unwound from the yarn accumulating roller 14. It can be done.

  The yarn storage device 12 includes a yarn detection sensor (detection unit) 86 and a yarn suction device (suction unit) 87 disposed so as to face the yarn storage roller 14.

  The yarn detection sensor 86 is a non-contact type optical sensor, and is electrically connected to the unit controller. The yarn detection sensor 86 detects whether or not the spun yarn 10 is wound around the outer peripheral surface of the yarn accumulating roller 14, and transmits a detection signal to the unit controller.

  The yarn suction device 87 includes a suction pipe connected to a blower (not shown) provided in the blower box 80, and an opening of the suction pipe is located near the outer peripheral surface of the yarn storage roller 14. Yes. The opening of the suction pipe is arranged so as to face the vicinity of the upstream end of the yarn accumulating roller 14. The yarn suction device 87 can suck and remove the spun yarn 10 by generating a suction flow at the opening of the suction pipe. The yarn suction device 87 is a yarn removal device (removal device) that removes the spun yarn 10 stored in the yarn storage device 12 together with the electric motor 25 that can be driven in the direction of unwinding the spun yarn 10 from the yarn storage roller 14. ) 88.

  A yarn quality measuring device 59 is provided at a position between the spinning device 9 and the yarn storage device 12. The spun yarn 10 spun by the spinning device 9 passes through the yarn quality measuring device 59 before being wound by the yarn accumulating device 12.

  The yarn quality measuring device 59 has substantially the same configuration as the yarn splicing quality monitor 47 described above, and is configured to monitor the thickness of the traveling spun yarn 10 by an optical or capacitance sensor not shown. ing. The yarn quality measuring device 59 is configured to transmit a yarn defect detection signal to a unit controller (not shown) when a yarn defect of the spun yarn 10 (a portion where the thickness of the spun yarn 10 is abnormal) is detected. Yes. The yarn quality measuring device 59 may be configured to detect the presence or absence of foreign matter contained in the spun yarn 10 as a yarn defect.

  When the unit controller detects an abnormality of the spun yarn 10 based on the detection result of the yarn quality measuring device 59, the unit controller stops the air ejection from the air ejection nozzle 27. As a result, the spinning of the spun yarn 10 in the spinning device 9 is stopped, so that the strength of the spun yarn 10 is reduced at the position of the spinning device 9 and the spun yarn 10 is cut so as to be torn off. As described above, the air ejection nozzle 27 provided in the spinning device 9 has a role of twisting the fiber bundle 8 to generate the spun yarn 10 and also has a role of cutting the spun yarn 10. The unit controller also stops drafting by the draft device 7.

  The spun yarn 10 on the downstream side of the cut portion is temporarily wound around the package 45 via the yarn storage device 12. FIG. 4 shows the spun yarn 10 being cut and wound around the package 45. Note that the spun yarn 10 wound around the package 45 at this time includes an abnormal portion detected by the yarn quality measuring device 59.

  Further, the unit controller stops the winding in the winding device 13. Specifically, when the cradle arm 71 is tilted by a cylinder (not shown) as shown in FIG. 4, the package 45 is separated from the winding drum 72 that is always rotating. In addition, a brake mechanism (not shown) provided in the winding device 13 operates. As a result, the package 45 is inertially rotated to some extent, and then completely stops its rotation.

  Subsequently, the unit controller sends a control signal to the yarn splicing carriage 3 to travel to the front of the spinning unit 2 where the abnormality of the spun yarn 10 is detected. Accordingly, the yarn joining device 43 is positioned between the spinning device 9 and the winding device 13 in the yarn traveling direction in the spinning unit 2. In this state, the yarn storage device 12 is located between the spinning device 9 and the yarn joining device 43 in the yarn traveling direction. Further, the cutter 55 is located between the yarn accumulating device 12 and the yarn joining device 43 in the yarn traveling direction.

  When the yarn splicing carriage 3 stops at the target spinning unit 2, the unit controller restarts the stopped draft device 7 and restarts spinning by the spinning device 9. Further, when the unit controller sends a control signal to the yarn joining cart 3, the yarn joining cart 3 rotates the suction pipe 44 and the suction mouth 46, respectively, as shown in FIG. The yarn end on the 45 side is sucked and captured.

  At this time, the yarn splicing cart 3 advances the support arm 91 of the reverse drive mechanism 49 to the winding device 13 side to bring the reverse roller 92 into contact with the package 45 and drives the reverse roller 92 in this state. The package 45 is reversely rotated. As a result, the spun yarn 10 on the side of the package 45 having a sufficient length so as to include the abnormal portion wound around the package 45 is sucked and pulled out by the suction mouth 46.

  Subsequently, as shown in FIG. 6, the yarn splicing cart 3 rotates the suction pipe 44 and the suction mouth 46 in the opposite directions to guide the sucked and captured yarn ends to the yarn splicing device 43, and in this state, The splicing device 43 performs splicing.

  At this time, since the excess spun yarn 10 is cut and removed by the yarn joining device 43, the abnormal portion detected by the yarn quality measuring device 59 is removed accordingly. Further, even during this yarn splicing operation, the upstream spinning device 9 continues without stopping spinning, but the generated spun yarn 10 is sequentially stored in the yarn storage device 12, so that the spun yarn 10 No slack will occur.

  Thereafter, the tilted cradle arm 71 is returned to the original position, so that the package 45 comes into contact with the take-up drum 72 as shown in FIG. 7, and the winding of the spun yarn 10 onto the package 45 is resumed.

  The yarn path is guided by a movable guide member or the like formed in a lever shape so that the spun yarn 10 passes through the yarn splicing quality monitor 47 and the cutter 55 immediately after the resumption of winding. Accordingly, the yarn joining portion formed by the previous yarn joining operation passes through the yarn joining quality monitor 47, and the quality of the joint is measured.

  The yarn splicing quality monitor 47 monitors the thickness of the traveling spun yarn 10 in the state shown in FIG. When the predetermined condition is satisfied, such as the thickness of the spun yarn 10 is larger than the reference value, the yarn joining quality monitor 47 transmits a yarn joining failure signal to the unit controller. Note that if the unit controller does not receive the yarn joining failure signal even though the winding of the spun yarn 10 to the package 45 has progressed to some extent, it means that the yarn joining device 43 has successfully made the yarn joining. Therefore, in this case, the unit controller controls the guide member so as to release the guide of the yarn path so that the spun yarn 10 is removed from the yarn splicing quality monitor 47 and the cutter 55. In this manner, the normal state of FIG. 2 is restored, and winding of the spun yarn 10 around the package 45 is continued.

  Next, a case will be described in which the yarn joining quality monitor 47 detects a yarn joining point failure in the state of FIG. 7 and transmits a yarn joining failure signal to the unit controller. The unit controller that has received this yarn splice failure signal immediately cuts the spun yarn 10 with the cutter 55 and, in the same way as when an abnormality is detected with the yarn quality measuring device 59, blows out air from the air jet nozzle 27. By stopping, the spun yarn 10 is cut and the draft device 7 is stopped. FIG. 8 shows a state of the spun yarn 10 cut at two points by the above control.

  Immediately after that, the unit controller stops the winding in the winding device 13 and rotates the yarn storage roller 14 in the yarn storage device 12 in the direction opposite to the normal direction. As a result, as shown in FIG. 9, the spun yarns 10 wound around the yarn accumulating roller 14 are sequentially unwound and sucked and removed by the yarn suction device 87. The reverse rotation of the yarn accumulating roller 14 is continued until all the stored spun yarn 10 is removed and the yarn detecting sensor 86 disposed in the vicinity of the yarn accumulating roller 14 does not detect the spun yarn 10. .

  After that, as in the situation described with reference to FIG. 5, the unit controller restarts the operations of the draft device 7 and the spinning device 9, and the yarn splicing cart 3 rotates the suction pipe 44 and the suction mouth 46, respectively. The yarn end on the side and the yarn end on the package 45 side are sucked and captured. Further, the yarn splicing cart 3 drives the reverse rotation roller 92 included in the reverse rotation driving mechanism 49 to rotate the package 45 in the reverse direction.

  Thereafter, as described with reference to FIGS. 6 and 7, the unit controller causes the yarn joining device 43 to perform the yarn joining operation, and the spun yarn 10 is monitored while the formed yarn joining portion is monitored by the yarn joining quality monitor 47. Resume winding.

  As described above, the removal of the yarn joining defect portion and the redoing of the yarn joining operation are completed. In this embodiment, the yarn joining defect portion detected by the yarn joining quality monitor 47 is once wound around the package 45. However, when this yarn joining defect portion is detected, the yarn joining quality monitor 47 is detected only by the spinning device 9. The spun yarn 10 is also cut by the cutter 55 immediately upstream of the yarn splicing quality monitor 47. Accordingly, the length of the spun yarn 10 can be reduced by rotating the package 45 in the reverse direction in order to remove the defective yarn joining portion. Further, although depending on the amount of the spun yarn 10 wound around the package 45 at that time, the yarn accumulating roller 14 is generally much lighter than the package 45, and therefore the yarn accumulating between the two cut portions. The spun yarn 10 stored in the apparatus 12 can be quickly removed by the high-speed reverse rotation of the yarn storage roller 14. Therefore, since it is possible to quickly shift to the yarn joining operation in the yarn joining device 43, it is possible to effectively shorten the time required for redoing the yarn joining operation.

  As described above, the spinning machine 1 of this embodiment includes the spinning device 9, the winding device 13, the yarn joining device 43, the yarn storage device 12, and the cutter 55. The spinning device 9 supplies the spun yarn 10. The winding device 13 winds the spun yarn 10 around the package 45. The yarn joining device 43 includes a yarn end of the spun yarn 10 on the spinning device 9 side and a yarn end of the spun yarn 10 on the winding device 13 side at a position between the spinning device 9 and the winding device 13 in the yarn traveling direction. Splice the yarn. The yarn storage device 12 temporarily stores the spun yarn 10 at a position between the spinning device 9 and the yarn joining device 43 in the yarn traveling direction. The cutter 55 cuts the spun yarn 10 at a position between the yarn accumulating device 12 and the yarn joining device 43 in the yarn traveling direction.

  Thereby, when the spun yarn 10 is cut by the cutter 55, the spun yarn 10 wound by the winding device 13 can be shortened. Accordingly, since the length of the yarn to be pulled out from the package 45 for the yarn joining operation by the yarn joining device 43 can be shortened, the efficiency of the yarn joining operation can be realized.

  The spinning machine 1 according to the present embodiment monitors the spun yarn 10 spliced by the yarn splicing device 43 at a position immediately downstream of the yarn splicing device 43 in the yarn traveling direction and detects an abnormality. A monitor 47 is provided. When the yarn splicing quality monitor 47 detects an abnormality in the spun yarn 10, the cutter 55 cuts the spun yarn 10.

  Thereby, since the yarn joining defect by the yarn joining device 43 can be detected at an early stage by the yarn joining quality monitor 47, the spun yarn 10 can be immediately cut by the cutter 55, and the yarn joining operation by the yarn joining device 43 can be performed again. As a result, the winding efficiency of the package 45 can be improved.

  The spinning machine 1 according to the present embodiment further includes an air ejection nozzle 27 and a yarn removing device 88. The air ejection nozzle 27 cuts the spun yarn 10 supplied from the spinning device 9 to the yarn accumulating device 12 when the air ejection is stopped. The yarn removing device 88 removes the spun yarn 10 stored in the yarn storage device 12.

  Accordingly, the spun yarn 10 on the downstream side of the yarn accumulating device 12 can be cut by the cutter 55 and the spun yarn 10 on the upstream side can be cut by the air ejection nozzle 27. Therefore, the spun yarn 10 stored in the yarn storage device 12 can be easily removed by the yarn removing device 88.

  In the spinning machine 1 of the present embodiment, the yarn storage device 12 includes a yarn storage roller 14 that stores the spun yarn 10 by winding the spun yarn 10 around the outer peripheral surface. The yarn removing device 88 includes a yarn suction device 87 and an electric motor 25. The yarn suction device 87 is disposed in the vicinity of the yarn storage device 12 and sucks the spun yarn 10 stored in the yarn storage device 12. The electric motor 25 drives the yarn storage device 12 in a direction that assists the suction of the spun yarn 10 by the yarn suction device 87.

  Thereby, the spun yarn 10 stored in the yarn storage device 12 can be positively supplied to the yarn suction device 87 and sucked, so that the spun yarn 10 can be reliably removed in a short time.

  In addition, the spinning machine 1 of the present embodiment includes a yarn detection sensor 86 that detects completion of removal of the spun yarn 10 from the yarn storage device 12. When the yarn detection sensor 86 detects completion of removal of the spun yarn 10, the yarn splicing device 43 performs splicing of the spun yarn 10.

  Thereby, when the yarn joining device 43 performs the yarn joining operation, the unnecessary spun yarn 10 stored in the yarn storage device 12 can be prevented from being mixed. Accordingly, it is possible to prevent the yarn joining operation from failing and the package 45 from being deteriorated in quality.

  Further, in the spinning machine 1 of the present embodiment, a spinning device 9 that generates a spun yarn 10 by spinning the fiber bundle 8 with an air flow is used as a yarn feeding device.

  That is, in a configuration in which a pneumatic spinning device 9 is used as the yarn feeding device and the spun yarn 10 continuously generated at a high speed in the spinning device 9 is stored in the downstream yarn storage device 12, the yarn storage device The length of the spun yarn 10 stored at 12 tends to be considerably long. Therefore, in such a yarn winding unit, it is more preferable that the spun yarn 10 is cut between the yarn accumulating device 12 and the yarn joining device 43 as described above.

  Further, the spinning machine 1 of the present embodiment includes a plurality of spinning units 2 and a yarn splicing cart 3 that are arranged side by side. Each spinning unit 2 includes a spinning device 9, a winding device 13, and a yarn storage device 12. The yarn joining cart 3 is provided so as to be able to travel with respect to the plurality of spinning units 2 and includes a cutter 55 and a yarn joining device 43.

  Thereby, in the spinning machine 1 provided with the yarn splicing carriage 3, the yarn splicing operation of the yarn splicing device 43 can be performed efficiently, so that the winding efficiency of the package 45 can be improved as a whole.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  At least one of the cutter 55 and the yarn joining device 43 can be changed to a configuration provided in each spinning unit 2 instead of the yarn joining cart 3. When both the cutter 55 and the yarn joining device 43 are provided on the spinning unit 2 side, the yarn joining cart 3 can be omitted. If the frequency of yarn breakage or the like in each spinning unit 2 is low, the cutter 55 and the yarn can be obtained by providing the yarn splicing carriage 3 and allowing the plurality of spinning units 2 to perform splicing as in the above embodiment. The number of relay devices 43 can be reduced, which is advantageous in terms of cost.

  Instead of cutting the spun yarn 10 by the air ejection nozzle 27 of the spinning device 9, for example, a second cutter is provided between the spinning device 9 and the yarn accumulating device 12, and the spun yarn 10 is cut by the second cutter. You may comprise.

  The spinning device is not limited to the configuration in which twisting is performed by the air ejection nozzle 27 that generates a one-way swirling air flow as in the above embodiment, and various spinning methods can be employed. For example, a pair of nozzles that generate swirling airflows whose directions are opposite to each other may be provided, and the fiber bundle may be simultaneously twisted in opposite directions.

  Moreover, it can change so that the yarn feeder which consists of a pair of roller may be arrange | positioned in the position between the spinning device 9 and the yarn storage device 12 in the yarn traveling direction.

  The yarn storage device is not limited to a type in which the spun yarn 10 is wound around and stored in the outer peripheral surface of the yarn storage roller 14 as in the above embodiment, and various types of storage devices can be employed. For example, in the configuration in which the above-described yarn feeding device is arranged, an elongated tube (slack tube) that stores by sucking spun yarn therein can be used as the yarn storage device. In this configuration, since the stored spun yarn is sucked and removed immediately after being cut by the cutter 55 and the air ejection nozzle 27, the slack tube serves as both the yarn storage device and the removal device. It will be.

  The present invention is not limited to the spinning machine as shown in the above embodiment, and can be widely applied to a yarn winding machine including a yarn joining device. For example, the present invention can also be applied to an automatic winder that unwinds a yarn from a yarn supply bobbin formed by winding spun yarn and winds it on a package. In this case, the portion where the yarn supply bobbin is set is the yarn supply It corresponds to a device.

1 Spinning machine (yarn winding machine)
2 Spinning unit (yarn winding unit)
3 Yarn splicing cart (cart)
12 Yarn Storage Device 13 Winding Device 14 Yarn Storage Roller (Storage Roller)
25 Electric motor (drive unit)
27 Air ejection nozzle (second cutting device)
43 Yarn splicing device 47 Yarn splicing quality monitor (monitoring device)
55 Cutter (first cutting device)
86 Yarn detection sensor (detection unit)
87 Yarn suction device (suction part)
88 Yarn removal device (removal device)

Claims (14)

A yarn feeder for supplying spun yarn;
A winding device for winding the spun yarn around a package;
Yarn splicing for splicing the yarn end of the spun yarn on the yarn feeding device side and the yarn end of the spun yarn on the winding device side at a position between the yarn feeding device and the winding device in the yarn traveling direction Equipment,
A yarn storage device for temporarily storing the spun yarn at a position between the yarn supplying device and the yarn joining device in the yarn traveling direction;
A first cutting device for cutting the spun yarn at a position between the yarn storage device and the yarn joining device in the yarn traveling direction;
A yarn winding machine comprising: The yarn winding machine according to claim 1,
A monitor device for detecting an abnormality by monitoring the spun yarn spliced by the yarn joining device at a position immediately downstream of the yarn joining device in the yarn traveling direction;
The yarn winding machine, wherein when the monitor device detects an abnormality of the spun yarn, the first cutting device cuts the spun yarn. The yarn winding machine according to claim 1 or 2,
A second cutting device for cutting the spun yarn supplied from the yarn feeding device to the yarn storage device;
A removal device for removing the spun yarn stored in the yarn storage device;
A yarn winding machine further comprising: A yarn winding machine according to claim 3,
The yarn storage device includes a storage roller that stores the spun yarn by winding the spun yarn around an outer peripheral surface,
The removal device includes:
A suction unit that is disposed in the vicinity of the yarn storage device and sucks the spun yarn stored in the yarn storage device;
A drive unit that drives the yarn storage device in a direction that assists suction of the spun yarn by the suction unit;
A yarn winding machine comprising: The yarn winding machine according to claim 3 or 4,
A detection unit for detecting completion of removal of the spun yarn from the yarn storage device;
The yarn winding machine, wherein when the detection unit detects completion of removal of the spun yarn, the yarn splicing device performs splicing of the spun yarn. A yarn winding machine according to any one of claims 1 to 5,
The yarn winding machine, wherein the yarn feeding device is a spinning device that produces a spun yarn by spinning a fiber bundle with an air flow. A yarn winding machine according to any one of claims 1 to 6,
A plurality of yarn winding units each including at least the yarn feeding device, the winding device, and the yarn storage device, arranged side by side;
A carriage provided so as to be able to travel with respect to the plurality of yarn winding units, and having at least one of the first cutting device and the yarn joining device;
A yarn winding machine comprising: A yarn feeder for supplying spun yarn;
A winding device for winding the spun yarn around a package;
It is provided at a position between the yarn feeding device and the winding device in the yarn traveling direction, and joins the yarn end of the spun yarn on the yarn feeding device side and the yarn end of the spun yarn on the winding device side. A yarn splicing device;
A yarn storage device that is provided at a position between the yarn supplying device and the yarn joining device in the yarn traveling direction, and temporarily stores the spun yarn;
A first cutting device provided at a position between the yarn accumulating device and the yarn joining device in the yarn traveling direction, and cutting the spun yarn;
A yarn winding unit comprising: The yarn winding unit according to claim 8,
A monitor device for detecting an abnormality by monitoring the spun yarn spliced by the yarn joining device at a position immediately downstream of the yarn joining device in the yarn traveling direction;
The yarn winding unit, wherein the first cutting device cuts the spun yarn when the monitor device detects an abnormality of the spun yarn. The yarn winding unit according to claim 8 or 9,
A second cutting device for cutting the spun yarn supplied from the yarn feeding device to the yarn storage device;
A removal device for removing the spun yarn stored in the yarn storage device;
A yarn winding unit, further comprising: The yarn winding unit according to claim 10,
The yarn storage device includes a storage roller that stores the spun yarn by winding the spun yarn around an outer peripheral surface,
The removal device includes:
A suction unit that is disposed in the vicinity of the yarn storage device and sucks the spun yarn stored in the yarn storage device;
A drive unit that drives the yarn storage device in a direction that assists suction of the spun yarn by the suction unit;
A yarn winding unit comprising: The yarn winding unit according to claim 10 or 11,
A detection unit for detecting completion of removal of the spun yarn from the yarn storage device;
The yarn winding unit, wherein the yarn splicing device performs splicing of the spun yarn when the detection unit detects completion of removal of the spun yarn. A yarn winding unit according to any one of claims 8 to 12,
The yarn winding unit, wherein the yarn supplying device is a spinning device that generates a spun yarn by spinning a fiber bundle with an air flow.   A yarn winding machine comprising a plurality of yarn winding units according to any one of claims 8 to 13.

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