JP4059206B2 - Spinner with bunch winding device - Google Patents

Description

  The present invention relates to a bunch winding method in which bunch winding is performed on an empty bobbin in an initial stage of winding a yarn around a bobbin to form a package. The present invention also relates to a spinning machine equipped with such a bunch winding device.

Patent Document 1 discloses an example of the bunch winding method as described above. In this method, as shown in FIGS. 4 and 5 of Patent Document 1, a notch-like hook is provided on the outer peripheral edge of a bobbin holder that holds the shaft end of a cylindrical bobbin (paper tube). Then, while the yarn is brought close to the shaft end of the bobbin by a yarn gathering member or the like, the bobbin is rotated in this state so that the yarn is locked by the hook and the yarn end is nipped, and then bunch winding is performed.
Japanese Utility Model Publication No. 6-38043 (from page 42, right column, line 42)

  However, if the thread end is simply locked to the hook as in Patent Document 1, the locking force is weak. Therefore, the yarn end outside the part locked by the hook is swung with the rotation of the bobbin, so that centrifugal force acts on the yarn, the yarn comes off from the hook, and bunch winding may fail. It was.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bunch winding method that appropriately performs bunch winding to reduce failure. Another object is to provide a spinning machine including such a bunch winding device with a low failure rate.

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 the first aspect of the present invention, a spinning machine configured as follows is provided. A bunch winding device is provided that performs bunch winding on an empty bobbin supported by the bobbin support. The bunch winding device includes an operating means for operating the bobbin support so as to form a gap between a shaft end of an empty bobbin and a bobbin holder; Suction catching means for guiding the yarn to the inside, and slack removal means for absorbing the slackness of the yarn . During said operating means, said by the suction capturing means by operating the bobbin supporting section in a state in which the yarn is guided in the interior of the gap is to abolish the clearance, and the and the shaft end of the empty bobbin the bobbin holder The yarn is nipped by pinching the yarn to the slack, and the slack eliminating means is generated by continuously spinning the yarn with the yarn sandwiched between the bobbin shaft end and the bobbin holder. Absorbs loose threads. In this state, the bobbin is rotated to form a bunch winding at a predetermined position of the bobbin.

  As a result, a gap is once formed between the bobbin shaft end and the bobbin holder by the operating means, the yarn is guided inside the gap by the suction catching means, and the clearance is eliminated by the operating means, and the axial direction By adopting the method of pinching the thread, the thread can be strongly pinched on the end of the bobbin. Therefore, it is possible to avoid a situation in which the yarn is unsatisfactory and is unsuccessful due to the yarn being detached during the bar winding (bunch winding) as in the prior art. Furthermore, although the yarn is continuously sent out on the upstream side, according to the above configuration, since the yarn sent out by the suction capturing means can be sucked and collected, the yarn does not loosen, and the inside of the gap The yarn can be guided properly.

  In the spinning machine, the bunch winding device includes a bunch guide that regulates the yarn path of the yarn that is continuously spun, and the bunch guide is arranged in the direction along the yarn path of the suction catching means. It is preferable to arrange the gap between the yarn catching portion and the yarn catching portion.

  Thus, the continuously fed yarn can be guided by the bunch guide without fluttering, and the yarn can be surely guided into the gap.

  In the above spinning machine, the bunch guide has a bunch feed surface that feeds the yarn guided from the bobbin shaft end toward the center when the empty bobbin is rotated for bunch winding. It is preferable.

  As a result, the yarn is naturally guided by the bunch feed surface during the bunch winding, and the bunch winding can be formed at an appropriate position slightly on the center side from the shaft end of the bobbin.

  In the spinning machine, the bunch guide is preferably attached to the suction capturing means.

As a result, a simple configuration for guiding continuously fed yarn without fluttering can be realized.
In the spinning machine, the bunch guide includes a first member having a guide groove and a second member having a protrusion capable of closing the open side of the guide groove,
The first member is movable relative to the second member, and further switches between a groove open state in which the guide groove is open and a groove closed state in which the guide groove is closed by the protrusion. It is preferable that the configuration is possible.

  In the spinning machine, it is preferable to provide a yarn cutting blade in the suction capturing means.

  Thereby, an excess thread | yarn end can be cut | disconnected in the vicinity of the pinching part of the thread | yarn between a bobbin and a bobbin holder. Therefore, it is possible to avoid the trouble that the extra yarn is swung around in a free state during the bunch winding and entangled with other members.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a longitudinal side view of a spinning machine according to an embodiment of the present invention. FIG. 2 is an enlarged view of the tip of the suction pipe as seen from the direction of arrow A in FIG. FIG. 3 is a perspective view showing a state in which the yarn end of the spun yarn is guided to the gap between the bobbin shaft end and the bobbin holder in the bunch winding device.

  FIG. 1 shows a spinning machine 1 provided with a spinning unit 2. As shown in FIG. 1, the spinning unit 2 has a draft device 7, a spinning device 9, a yarn feeding device 11, and a winding device 12 as main components. The draft device 7 is provided in the upper part of the spinning machine 1 main body, and the fiber bundle 8 sent from the draft device 7 is spun by the spinning device 9. The spun yarn 10 discharged from the spinning device 9 is fed downward by the yarn feeding device 11 and wound by the winding device 12 to form a package 45.

  As shown in FIG. 1, the draft device 7 is for drawing a sliver 13 into a fiber bundle 8, and includes a middle roller 17 and a front roller 18 on which a back roller 14, a third roller 15, and an apron belt 16 are mounted. These four rollers are used.

  The yarn feeding device 11 includes a delivery roller 39 supported by the spinning machine 1 main body and a nip roller 40 provided so as to be able to contact with and separate from the delivery roller 39. The spun yarn 10 discharged from the spinning device 9 is sandwiched between the delivery roller 39 and the nip roller 40 and the delivery roller 39 is driven to rotate, whereby the spun yarn 10 is sent to the winding device 12 side.

  As shown in FIG. 3, the winding device 12 as a bobbin support portion includes a first arm 71 and a second arm 72 that rotatably support a cylindrical bobbin 22 that is a core material of the package 45, and the bobbin 22. A drive drum 79 for rotating the motor is provided as a main component. Among these, the first arm 71 and the second arm 72 constitute a cradle for holding the bobbin 22. The bobbin 22 includes a cylindrical cheese winding bobbin and a truncated cone cylindrical bobbin having a large-diameter side and a small-diameter side, and can be applied to any case in the present invention.

  As shown in FIG. 3, the lower ends of the two arms 71 and 72 are pivotally supported on the spinning machine 1 by the first hinge 31 and fall to the front side of the spinning machine 1 (left side in FIGS. 1 and 3). It can be rotated. The arms 71 and 72 are provided with urging springs (not shown) so that the urging force in the standing direction is constantly applied to the arms 71 and 72.

  Bobbin holders 85 and 86 for holding the shaft end of the cylindrical bobbin 22 are rotatably provided at the tips of the arms 71 and 72 so as to face each other. Accordingly, when the bobbin 22 is held between the bobbin holders 85 and 86 and the bobbin 22 is brought into contact with the drive drum 79 and the drive drum 79 is rotationally driven in this state, the bobbin 22 is rotated to rotate the spun yarn 10. Can be wound up. At this time, both bobbin holders 85 and 86 also rotate integrally with the bobbin 22.

  As shown in FIG. 3, the lower end portion of the first arm 71 is pivotally supported by the second hinge 32, and can be rotated so as to fall away from the second arm 72 on the opposite side. By rotating the first arm 71 in this manner, the fully packaged package 45 (chain line in FIG. 2) can be removed from the winding device 12 or the empty bobbin 22 can be attached to the winding device 12. A return spring (not shown) is provided on the first arm 71 so as to apply a biasing force in a direction approaching the second arm 72 to the first arm 71.

  As shown in FIG. 1, the spinning machine 1 of this embodiment has a bunch winding device 4, and this bunch winding device 4 has a suction pipe 88, a chucker 89, and a cradle operation arm 90 in its casing 80. In addition, a bunch winding drive arm 91 is provided. The suction pipe (suction catching means) 88 is provided so that it can be raised and retracted in order to catch the yarn end continuously discharged from the spinning device 9 while sucking it and guide it to the winding device 12. The chucker 89 is rotatably provided to supply the empty bobbin 22 to the winding device 12. The cradle operation arm 90 (operation means) is rotatably provided to operate the tip of the first arm 71 of the winding device 12. Furthermore, the bunch winding drive arm 91 is rotatably provided to perform bunch winding when starting to wind the spun yarn 10 around the empty bobbin 22.

  A suction port (capturing portion) 25 for sucking the yarn is formed at the lower end of the tip of the suction pipe 88. The suction port 25 generates a suction force by a soccer means (not shown). Further, a bunch guide 26 for guiding the yarn during the bunch winding is provided at the upper end of the suction pipe 88. Further, a cutter (yarn cutting blade) 27 for cutting an extra yarn end on the tip side of the yarn portion required for bunch winding is fixed near the upper portion of the suction port 25.

  FIG. 2 shows a state in which the tip portion of the suction pipe 88 is viewed from the direction of arrow A in FIG. FIG. 3 shows a state in which the suction pipe 88 is lowered as a perspective view. As shown in FIGS. 2 and 3, the bunch guide 26 is provided so as to protrude from the tip of the suction pipe 88.

  The bunch guide 26 is configured by stacking thin plate-like members 26a and 26b on each other. As shown in FIG. 2, a guide groove 29 and an oblique first guide surface 47 for feeding the spun yarn 10 into the guide groove 29 are formed on the lower first plate-like member 26 a. Yes. The upper second plate-like member 26 b has a hook-like protrusion 30 that can close the open side of the guide groove 29, and a first thread for feeding the spun yarn 10 into the guide groove 29 in the same manner as the first guide surface 47. 2 guide surfaces 48.

  The first plate member 26a is attached to the tip of the suction pipe 88 via a known slide mechanism such as a cam or a pneumatic cylinder, and the longitudinal direction of the suction pipe 88 relative to the second plate member 26b ( It can be slid with a predetermined stroke in the left-right direction in FIG. As a result, the first plate-like member 26 a can be switched between a groove open state indicated by a solid line in FIG. 2 and a groove closed state (chain line) in which the protrusion 30 closes the guide groove 29.

  Next, the bunch winding operation of the bunch winding device 4 will be described. FIG. 3 is a perspective view showing a state in which the yarn end of the spun yarn is guided to the gap between the bobbin shaft end and the bobbin holder in the bunch winding device. FIG. 4 is a perspective view showing a state in which the gap is eliminated from the state of FIG. 3 and a thread is held between the bobbin shaft end and the bobbin holder. FIG. 5 is a perspective view showing a state in which an empty bobbin is rotated to form a rod winding. FIG. 6 is a view showing a state in which spun yarn is fed slightly from the bobbin shaft end toward the center during bunch winding.

  When the bunch winding device 4 receives the bobbin request signal from the control unit of the spinning machine 1, the bunch winding device 4 rotates the suction pipe 88 obliquely upward and extends it by a pneumatic cylinder (not shown), and the suction port 25 of the yarn feeding device 11. It is moved to just downstream of the delivery roller 39 and the nip roller 40 (dashed line in FIG. 1; reference numeral 88 ′). At this time, the yarn end of the spun yarn 10 spun on the spinning device 9 side is nipped by both rollers 39 and 40 of the yarn feeding device 11 and further fed downstream. As a result, the yarn end of the spun yarn 10 is sucked into the suction port 25 of the suction pipe 88 and captured.

  As shown by reference numeral 88 'in FIG. 1, when the suction pipe 88 captures the yarn end fed from the yarn feeding device 11, the suction pipe 88 is in a posture close to a standing state, and its suction port 25 is directed straight to the yarn feeder 11. Along with this, the bunch guide 26 is slightly retracted to the front side of the spinning machine 1 (left side in FIG. 1), so that the bunch guide 26 does not get in the way when the yarn end is captured by the suction port 25. Absent.

  At substantially the same time, the bunch winding device 4 rotates the cradle operation arm 90 to push the first arm 71 of the winding device 12 (see FIG. 3), and tilts the first arm 71 to the front side. Tilt. At this time, the second arm 72 of the winding device 12 also follows and tilts to the front side. Further, the cradle operating arm 90 pushes the first arm 71 away from the second arm 72.

  The empty bobbin 22 (stocked in the casing 80 of the bunch winding device 4 as shown in FIG. 1) is gripped by the chucker 89, and the chucker 89 is moved forward. As a result, the bobbin 22 supported by the chucker 89 moves to a position between the two arms 71 and 72 of the winding device 12 as shown in FIG.

  At this time, the first arm 71 of the winding device 12 is tilted in the direction away from the second arm 72 by the cradle operating arm 90, so that the distance between the arms 71 and 72 (between the bobbin holders 85 and 86). Is longer than the axial length of the bobbin 22. Accordingly, both shaft ends of the bobbin 22 are held by the chucker 89 in a state where the axial gaps g1 and g2 are formed with respect to both the arms 71 and 72 of the winding device 12.

  The bunch winding drive arm 91 also moves with a slight delay from the movement of the chucker 89, and the driving roller 92 at the tip thereof is close to the empty bobbin 22 held by the chucker 89, as shown in FIG. Let In this state, the drive roller 92 is not yet driven to rotate.

  Then, the suction pipe 88 is retracted and rotated downward from the position of the chain line in FIG. 1 while sucking the yarn end of the yarn 10 spun from the spinning device 9 into the suction port 25, as shown in FIG. The spun yarn 10 is guided to the vicinity of the axial end of the empty bobbin 22 supported by the chucker 89. The suction pipe 88 stops at the position shown in FIG. 3, that is, with the suction port 25 positioned just below the gap g <b> 2 formed between the bobbin 22 and the bobbin holder 86 of the second arm 72. .

  As the suction pipe 88 descends from the position of the chain line (88 ') in FIG. 1, the suction pipe 88 assumes a lying posture, and as this turns, the bunch guide 26 provided in a protruding manner on the upper end of the suction pipe 88. Is gradually advanced with respect to the yarn path of the spun yarn 10 between the yarn feeding device 11 and the suction port 25. Further, even when the suction pipe 88 is rotated downward, suction from the suction port 25 is constantly performed. As a result, the yarn feeding from the suction port 25 is performed despite continuous yarn feeding from the yarn feeding device 11. A moderate tension is applied to the spun yarn 10 up to the apparatus 11. Accordingly, the spun yarn 10 captured by the suction pipe 88 by the advance of the bunch guide 26 with respect to the yarn path and the guide action of the two guide surfaces 47 and 48 of the bunch guide 26 is the bunch of FIG. The yarn is naturally fed into the guide groove 29 of the guide 26 and its yarn path is regulated.

  Here, the guide groove 29 is provided at a position almost directly above the suction port 25 of the suction pipe 88 (see FIG. 2), and the guide groove 29 is formed when the suction pipe assumes the posture shown in FIG. Are provided so as to be directly above the gap g2. That is, the bunch guide 26 is disposed at a position sandwiching the gap g2 with the suction port 25 of the suction pipe 88 in the direction along the yarn path. Therefore, the spun yarn 10 is guided between the suction port 25 and the guide groove 29 so as to pass through the inside of the gap g <b> 2 between the bobbin 22 and the second arm 72.

  Next, as shown in FIG. 4, the bunch winding device 4 moves the cradle operating arm 90 in a direction approaching the second arm 72, and moves between the two arms 71 and 72 of the winding device 12 (the bobbin holders 85 and 86 of the bobbin holders 85 and 86. The bobbin 22 is held between the two. As a result, the gap g2 between the bobbin 22 and the bobbin holder 86 disappears (along with the gap g1 on the opposite side), and the spun yarn 10 is between the shaft end on one side of the bobbin 22 and the bobbin holder 86 of the second arm 72. Sandwiched. At almost the same time, the gripping state of the bobbin 22 by the chucker 89 is released. Here, when the spun yarn 10 is sandwiched, the spun yarn 10 is still continuously fed from the upstream side, so that the spun yarn 10 is slackened. This slack is not shown in the figure. What is necessary is just to absorb with an appropriate slack-removing means.

  Immediately after this, as shown in FIG. 5, the bunch winding device 4 slides the first plate-like member 26 a of the bunch guide 26 to make the aforementioned groove closed state, and the projection 30 guides the first plate-like member 26 a. The groove 29 is closed. Further, the bunch winding drive arm 91 is moved so that the drive roller 92 at the tip thereof is brought into contact with the peripheral surface of the bobbin 22, and the drive roller 92 is rotated to rotate the bobbin 22.

  When the bobbin 22 rotates in the direction of the thick arrow in FIG. 5, a force in the right direction in the drawing in FIG. 5 is applied to the spun yarn 10 above the bobbin 22 and tries to come out of the guide groove 29. It is blocked by the protrusion 30. At this time, the spun yarn 10 has a slight amount as shown by the arrow in FIG. 6 due to the guide action of the slanted bunch feeding surface 49 (see FIG. 2) formed on the second plate member 26b of the bunch guide 26. The distance is sent to the axially central side of the bobbin 22. By this feeding in the axial direction, as shown in FIG. 7, a bunch winding portion 50 in a rod winding state of the spun yarn 10 is formed at a position slightly closer to the center than the shaft end on one side of the bobbin 22. .

  When the bobbin 22 is rotated a predetermined number of times to form the multi-layered bunch winding portion 50, the bunch winding is completed. The extra yarn 10 on the suction port 25 side is naturally sent to the cutter 27 side as the bobbin 22 is rotated and cut, and is sucked and discarded in the suction port 25.

  When the bunch winding is completed from the state of FIG. 5, the first plate-like member 26a of the bunch guide 26 is immediately slid to the retracted side to open the groove, and the suction pipe 88 is further rotated upward. 1 and the chucker 89, the bunch winding drive arm 91, and the drive roller 92 are also retracted upward as shown in FIG. As the suction pipe 88 rises, the spun yarn 10 naturally comes off from the guide groove 29 of the bunch guide 26. At substantially the same time, the cradle operating arm 90 is lifted and retracted to release the tilting of the first arm 71 to the front side, and the driving drum 79 that is rotatingly driving the bobbin 22 held between the arms 71 and 72 is released. Contact. Thus, the bobbin 22 is rotationally driven, and winding of the spun yarn 10 onto the bobbin 22 is started. During the winding, the spun yarn 10 is traversed by a known traverse device (not shown).

  The rotation operation of the chucker 89, the cradle operation arm 90, the bunch winding drive arm 91, and the suction pipe 88 as shown in FIGS. 1 → 3 → 4 → 5 → 1 is applied to the casing 80 of the bunch winding device 4. A supported camshaft (not shown) is driven by an electric motor (not shown) to perform a series of movements.

  As described above, the spinning machine 1 of the present embodiment performs bunch winding by the following method. (A) The empty bobbin 22 is held by the chucker 89 so that the shaft end forms a gap g <b> 2 with the bobbin holder 86. (B) In that state, the suction pipe 88 sucks the yarn end of the spun yarn 10 continuously fed from the spinning device 9, and guides the spun yarn 10 into the gap g2. (C) The empty bobbin 22 is sandwiched between the bobbin holder 86 and the spun yarn 10 is sandwiched between the shaft end of the bobbin 22 and the bobbin holder 86. (D) In this state, the bobbin 22 is rotated to form the bunch winding portion 50 on the bobbin 22.

  Further, the bunch winding device 4 of the present embodiment includes a cradle operation arm 90 that operates the winding device 12 so as to form a gap g2 between the shaft end of the empty bobbin 22 and the bobbin holder 86, and a spinning device 9 And a suction pipe 88 that captures the yarn end of the spun yarn 10 continuously spun and guides the yarn into the gap g2. Then, the cradle operating arm 90 operates the winding device 12 with the yarn passing through the gap g2 so that the gap g2 disappears, so that the shaft end of the empty bobbin 22 and the bobbin holder 86 are removed. It is comprised so that a thread | yarn can be pinched | interposed between. Then, the bobbin 22 is rotated in a state where the yarn is sandwiched in this way, and the bunch winding portion 50 is formed on the bobbin 22.

  In this way, by adopting a method in which the gap g2 is once formed between the shaft end of the bobbin 22 and the bobbin holder 86, and the spun yarn 10 is guided in the gap g2 and sandwiched in the axial direction. Can be strongly held between the ends of the bobbin 22. Therefore, it is possible to prevent the yarn from being unsuccessfully fixed due to insufficient fixing of the yarn as in the prior art and the yarn coming off during bunch winding. Further, on the upstream side, the spun yarn 10 is spun without interruption, and the yarn is continuously sent out even during the yarn guide for the bunch winding, but the suctioned yarn 88 sucks the spun yarn. Therefore, the spun yarn 10 can be properly guided into the gap g2.

  In the present embodiment, the bunch winding device 4 includes a bunch guide 26. The spun yarn 10 is guided into the gap g2 between the suction port 25 of the suction pipe 88 and the guide groove 29 of the bunch guide 26. Therefore, the spun yarn 10 that is continuously sent out can be guided by the bunch guide 26 without fluttering, and the spun yarn 10 can be reliably fed into the gap g2.

  Further, in this embodiment, the bunch guide 26 has a bunch feed surface 49, and this bunch feed surface 49 causes the spun yarn 10 to move on the bobbin 22 when the empty bobbin 22 is rotated for bunch winding. It is designed to be guided from the shaft end to the center. With this configuration, the spun yarn 10 is naturally guided by the bunch feeding surface 49 when bunch winding, and the bunch winding portion 50 can be formed at an appropriate position slightly on the center side of the shaft end of the bobbin 22.

  Further, since the bunch guide 26 is attached to the suction pipe 88, a simple configuration for guiding the spun yarn 10 without fluttering can be realized. Furthermore, since the cutter 27 is attached to the suction pipe 88, the excess yarn end can be cut near the portion where the yarn is clamped between the bobbin 22 and the bobbin holder 86. Therefore, it is possible to avoid the trouble that the extra yarn ends are swung around in the free state during the bunch winding and entangled with other members.

  In the present embodiment, the spinning machine 1 having only one spinning unit 2 is shown, but the bunch winding method of the present invention is naturally applied to the spinning machine 1 having a configuration in which a large number of spinning units 2 are arranged. Can do.

1 is a longitudinal side view of a spinning machine according to an embodiment of the present invention. The enlarged view which looked at the front-end | tip part of the suction pipe from the arrow A direction of FIG. The perspective view which shows a mode that the yarn end of spun yarn was guided to the clearance gap between the axial end of a bobbin and a bobbin holder in a bunch winding device. The perspective view which shows a mode that the said clearance gap was lose | disappeared from the state of FIG. 3, and the thread | yarn was clamped between the axial end of the bobbin and the bobbin holder. The perspective view which shows a mode that an empty bobbin is rotated and a bar winding is formed. The figure which showed a mode that spun yarn was sent from the axial end of a bobbin slightly toward the center at the time of bunch winding formation. The principal part enlarged view which shows the part of a bunch winding in a package.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spinning machine 4 Bunch winding device 10 Spinning yarn 22 Bobbin 25 Suction pipe suction inlet (capturing part)
26 Bunch guide 27 Cutter (thread cutting blade)
50 Stick roll (bunch roll)
85/86 Bobbin holder 88 Suction pipe (suction capture means)
g2 clearance

Claims (6)

In a spinning machine equipped with a bunch winding device that performs bunch winding on an empty bobbin supported by a bobbin support,
The bunch winding device
Operating means for operating the bobbin support so as to form a gap between the shaft end of the empty bobbin and the bobbin holder;
Suction catching means for catching the continuously spun yarn end and guiding the yarn into the gap;
A slack removing means for absorbing the slack of the thread;
With
During said operating means, said by the suction capturing means by operating the bobbin supporting section in a state in which the yarn is guided in the interior of the gap is to abolish the clearance, and the and the shaft end of the empty bobbin the bobbin holder The yarn is nipped by pinching the yarn to the slack, and the slack eliminating means is generated by continuously spinning the yarn with the yarn sandwiched between the bobbin shaft end and the bobbin holder. Absorb the slack of the thread,
In this state, the bobbin is rotated to form a bunch winding at a predetermined position of the bobbin. The spinning machine according to claim 1 , wherein the bunch winding device includes a bunch guide that regulates a yarn path of a yarn that is continuously spun, and the bunch guide is arranged in a direction along the yarn path. A spinning machine, wherein the spinning machine is disposed at a position sandwiching the gap with a yarn catching portion of a suction catching means. The spinning machine according to claim 2 , wherein the bunch guide has a bunch feed surface that feeds the yarn by guiding the yarn from the end of the bobbin slightly toward the center when the empty bobbin is rotated for bunch winding. A spinning machine characterized by having. The spinning machine according to claim 2 or claim 3, a spinning machine the bunch guide is characterized in that attached to the sucking and catching means. The spinning machine according to any one of claims 2 to 4,
The bunch guide is
A first member having a guide groove; and a second member having a protrusion capable of closing the open side of the guide groove;
The first member is movable relative to the second member, and further switches between a groove open state in which the guide groove is open and a groove closed state in which the guide groove is closed by the protrusion. A spinning machine characterized by being configured. The spinning machine according to any one of claims 1 to 5, a spinning machine, characterized in that a thread cutting blade to the suction capturing means.

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