JP2014043347A - Method for coupling needle thread and bobbin thread at working unit of winder and working unit of winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time taken to couple threads and in turn heighten the take-up productivity.SOLUTION: In the take-up process, a first suction nozzle 12 is positioned at the initial position so that a suction slit 44 of the first suction nozzle 12 is positioned in the range of a take-up package 15, a suction nozzle head part 40 is positioned in a first position so that the suction slit 44 points in the direction of the take-up package 15. When a thread is interrupted, a needle thread 52 is captured by the first suction nozzle, and then the first suction nozzle is turned to a thread insertion position in a thread coupler 10. After thread coupling, the suction nozzle head part is turned to a second position where the first suction nozzle can be turned through the side of a thread runway, the first suction nozzle is again turned to the initial position through the side of the thread runway, and the suction nozzle head part is again turned to a first position after the first suction nozzle passes the thread runway of a working part 2.

Description

  The present invention relates to a method for combining a winding thread or an upper thread coupled to a winding package and a lower thread coupled to a feeding bobbin at a working unit of a winder, wherein the upper thread is a first suction. The nozzle is captured from the winding package, accommodated, and inserted into the yarn coupling device, and the lower thread is captured by the second suction nozzle, accommodated, and inserted into the yarn coupling device. It relates to a method of joining together.

  Furthermore, the present invention relates to a working unit of a winder provided with a device for coupling an upper thread coupled to a winding package and a lower thread coupled to a feeding bobbin. The apparatus captures, accommodates, and inserts the upper thread into a thread coupling device, and a first suction nozzle configured to capture and store the upper thread, and insert the thread into the thread coupling device. And a second suction nozzle formed on the surface.

  German Published Patent Application No. 19933842 discloses a working part of a winder equipped with a device for joining upper and lower threads. A corresponding method is described in the above published German patent application. In order to process the upper thread, a first suction nozzle is provided, which is pivotally supported and is loaded with a negative pressure, i.e. a negative pressure is applied. The first suction nozzle has a suction slit, which makes it possible to catch the end of the upper thread on the winding package or the winding package. The suction slit extends in the axial direction of the winding package. The second suction nozzle for processing the lower thread is formed as a gripper tube. This gripper tube can also be loaded with negative pressure to catch the bobbin thread. The gripper tube has a gripper tube flap, and a thread transfer hook is disposed on the gripper tube flap.

  When the yarn is interrupted, such as after yarn breakage or clearer cut, the lower yarn is generally held in the yarn tensioner and the upper yarn is wound on the surface of the winding package. During the winding process, the first suction nozzle is positioned in a lower position behind the yarn path. That is, in order to catch the upper thread when the thread is interrupted, the first suction nozzle must first pivot to the upper position, so that the suction slit of the first suction nozzle is in front of the winding package. Located in (front). In order to catch the upper thread, the first suction nozzle is loaded with a negative pressure, and the winding package is slowly rotated in a direction opposite to the winding direction. When the first suction nozzle accommodates the upper thread, the first suction nozzle pivots to the lower position and inserts the upper thread into a thread coupling device formed as a splicing device. Subsequently, the lower thread is taken up by the gripper tube. For this purpose, the gripper tube is swiveled so that its gripper tube opening is located in a range just below the yarn tensioner, and in this range the lower thread is caught pneumatically. When turning downward, the gripper tube flap is opened by the control slide guide mechanism (Steuerkulisse). When the gripper pipe is turned upward, the gripper pipe flap is closed again, thereby mechanically fixing the lower thread. On the way to the upper end position, the gripper pipe crosses the upper thread trajectory by a thread transfer hook disposed on the gripper pipe flap and entrains the upper thread. By the upper control slide guide mechanism, the gripper tube flap is opened for a short time before reaching the upper end position, and the lower thread is pinched under the action of the formed negative pressure. At the same time, the upper thread wound around the thread transfer hook is tensioned by opening the gripper pipe flap. A splicing process can then be performed. After the thread connection has been made, the gripper tube can be swung back. On the other hand, the first suction nozzle is located behind the yarn running path and cannot be swung upward based on its extended length perpendicular to the yarn running direction. The first suction nozzle remains in the lower position during the winding process until the next yarn break. It is inconvenient that the suction nozzle can only be swung up to the position in front of the winding package after the yarn interruption. This is because this increases the time for performing the yarn coupling. The longer it takes to switch the upper and lower threads, the lower the productivity of the winder.

German Patent Application Publication No. 19933842

  The problem that forms the basis of the present invention is to reduce the time required for yarn bonding and thus to increase the winding productivity.

  In order to solve this problem, in the method of the present invention, in the method described at the beginning, during the winding process, the first suction nozzle is connected to the suction slit provided in the first suction nozzle. The suction nozzle head portion provided with the suction slit of the first suction nozzle is positioned at the initial position so as to be positioned within the range, and the first position is set so that the suction slit faces the direction of the winding package. The first suction nozzle is sucked with suction air when the yarn is interrupted, and thereby the upper yarn is captured. After the upper yarn is captured and stored, the first suction nozzle is stored in the stored upper yarn. At the same time, it is swung to the thread insertion position for inserting the upper thread into the thread coupling device, and after the thread coupling process, is rotatably supported by a tube-shaped connecting portion provided in the first suction nozzle. A second position in which the suction nozzle head portion can be swung from the first position about the longitudinal axis of the tube-shaped connecting portion through the side of the yarn runway. After the suction nozzle head portion is rotated to the second position, the first suction nozzle is rotated again to its initial position through the side of the yarn running path, and the first suction nozzle is moved to the working portion. After passing through the yarn running path, the suction nozzle head portion was rotated again to the first position.

  In order to solve the above-mentioned problem, in the configuration of the working unit of the present invention, in the working unit of the winder described at the beginning, the first suction nozzle is a suction nozzle head provided with a tubular connection portion and a suction slit. The suction nozzle head portion is rotated from a first position to a second position about a longitudinal axis of the tubular connecting portion, and the suction nozzle head portion is A suction nozzle of 1 is arranged at the connecting portion of the tube shape so as to be able to swivel along the side of the yarn running path, a rotation drive device for performing rotation is formed, and the suction slit is provided with the suction slit. When the suction nozzle of 1 is positioned in the range of the winding package located in the working part at the initial position, the suction slit is located in the working part at the first position. The first suction nozzle is threaded from a thread insertion position for inserting an upper thread into the thread coupling device with the suction nozzle head portion positioned at the second position. It turned to the initial position through the side of the thread located in the path.

  According to the present invention, the first suction nozzle is positioned in the range of the winding package in a state where it can be operated at any time during the standard winding process. That is, when the yarn is interrupted, the search for the upper yarn can be started immediately. In order to achieve this, the first suction nozzle is arranged so that the suction slit is located in the range of the winding package immediately after the yarn connection. This is made possible by rotating the suction nozzle head portion. In the first position of the suction nozzle head part, i.e. the position where the suction slit is directed in the direction of the winding package, the suction nozzle head part has a relatively large extension length in the direction perpendicular to the yarn path. Have. The length of the suction slit is matched to the width of the winding package, so that the yarn can be caught reliably. In order to capture the upper thread, the length of the suction slit extending in the longitudinal direction must be substantially parallel to the axis or circumferential surface of the winding package. In order to allow the first suction nozzle to swivel through the yarn located in the yarn path after the yarn is joined, the suction nozzle head portion is rotated with the tube-shaped connecting portion mounted. Maximum lateral spacing between the suction nozzle head portion and the yarn runway is achieved by rotating 90 ° about the longitudinal axis of the tubular connecting portion. However, depending on the configuration of the suction nozzle head portion, only a slight rotation may be sufficient to allow the first suction nozzle to swivel along the yarn path. The longitudinal extension length of the suction slit is substantially perpendicular to the axis or peripheral surface of the winding package when rotated 90 °. The extension length of the first suction nozzle in the axial direction of the winding package is significantly reduced by rotating the suction nozzle head portion. For this reason, the first suction nozzle can be swung to the upper position through the side of the yarn located on the regular yarn path, and thus again swung to the initial position having a suction slit in the range of the winding package. . In order to be able to catch the upper thread immediately at the next thread interruption, the suction nozzle head part must also be rotated again to the first position. The return swiveling of the first suction nozzle from the yarn insertion position to the initial position can be carried out while the winding process has already begun again. In other words, the time for connecting the yarns, and thus the time for interrupting the winding, is shortened by the swirling time of the first suction nozzle as compared with the known prior art.

  If the lower thread and upper thread are captured, received and inserted into the thread joining device at the same time, the time taken for thread joining can be further reduced. While the first suction nozzle captures and stores the upper thread and inserts it into the thread coupling device, the second suction nozzle can already capture and store the lower thread. That is, the lower thread can be immediately inserted into the thread coupling device after the upper thread is inserted.

  In one advantageous embodiment, during the winding process, the position of the first suction nozzle is related to the diameter of the winding package, so that the distance between the suction slit and the winding package is within a predetermined range during the winding process. Can be changed to stay inside. During the winding process, the diameter of the winding package always increases. That is, without adapting the position of the first suction nozzle to the package diameter, the position of the first suction nozzle must first be set so that the distance between the suction slit and the winding package becomes considerably large. This is because the spacing decreases as the diameter increases, otherwise there is a risk of collision between the suction nozzle head portion and the winding package. However, if an excessively large interval is set, the reliability with which the yarn end can be accommodated from the winding package is deteriorated. Turning the first suction nozzle in the direction of the winding package after the occurrence of yarn interruption additionally takes time. That is, this advantageous embodiment takes into account that the certainty of finding the yarn end remains unchanged throughout the entire winding process without extending the time for the yarn connection.

  After the yarn break is detected, the winding package is braked so that the yarn connection can be performed. In the known method in the prior art, the first suction nozzle is swiveled into the winding package only after a yarn interruption has occurred. At this point, the package is usually already in a stopped state and the yarn end is wound on the winding package. However, in the method according to the invention, the first suction nozzle is positioned in front of the winding package in a state where it can be activated at any time when a yarn interruption occurs. It is therefore advantageous if the first suction nozzle is already sucked with suction air during the braking process of the winding package. Thereby, the yarn end portion in the middle of winding can be captured, that is, the yarn end portion can be captured before the yarn end portion is completely wound on the winding package. Alternatively, at least the winding process of the upper thread on the winding package is affected so that the wound yarn end can be captured more easily.

  Furthermore, in order to solve the above-described problems, a working unit of a winder is proposed that includes a device that combines an upper thread coupled to a winding package and a lower thread coupled to a feeding bobbin. The apparatus captures, accommodates, and inserts the upper thread into a thread coupling device, and a first suction nozzle configured to capture and store the upper thread, and insert the thread into the thread coupling device. And a second suction nozzle formed on the surface. In the configuration of the present invention, the first suction nozzle has a tubular connection portion and a suction nozzle head portion having a suction slit. The suction nozzle head portion is rotated from the first position to the second position about the longitudinal axis of the tubular connection portion so that the first suction nozzle is threaded. The tube-shaped connecting portion is arranged so as to be able to turn through the side of the runway. In order to carry out the rotation, a rotation drive device is formed. When the first suction nozzle provided with the suction slit is positioned in the range of the winding package located in the working part at the initial position, the suction slit is located in the working part at the first position. Oriented in the direction of the winding package located. In the second position, the first suction nozzle with the suction nozzle head portion passes from the yarn insertion position for insertion of the upper yarn into the yarn coupling device, alongside the yarn located in the yarn path. It is possible to turn to the initial position.

  In order to control the coupling process, a control device may be provided. In this case, the control device controls the rotation driving device so that the suction nozzle head portion rotates to the second position after the yarn coupling, and the swivel driving device that turns the first suction nozzle is the first The suction nozzle is controlled to turn to the initial position through the side of the yarn located in the yarn path.

It is a side view which shows the working part of a winding machine in the state in the process of winding. It is a side view which shows the working part shown in FIG. It is a front view which shows the working part shown in FIG. 1 in the state immediately after thread | yarn coupling | bonding. It is a front view which shows the working part provided with the suction nozzle head part rotated.

  In the following, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a side view of a winder indicated as a whole by reference numeral 1. As the winder, an automatic traverse winder is formed in this embodiment. Such an automatic traverse winder usually has a large number of working sections 2 (also called “rewinding sections”) of the same type between its machine end (out end) (not shown).

  A spinning cup 9 produced by a ring spinning machine is wound around these rewinding sections 2 to form a large volume traverse package 15 (it is well known and will not be described in detail). In this case, the spinning cup 9 is a feeding bobbin, and the yarn 50 is fed out from the feeding bobbin.

  After the traversing package 15 is completed, it is delivered to a traversing package transport device 21 having a machine length, preferably by a self-actuating service unit of a traversing package changer (not shown) and arranged on the machine end side. To a package loading station or the like.

  Such an automatic traverse winder 1 further comprises a logistic device in the form of a bobbin / winding tube transfer system 3. In the bobbin / winding tube transfer system 3, the spinning cup 9 or the empty tube circulates while being placed on the transfer disk 8.

  Furthermore, such an automatic traverse winder 1 usually has a central control unit. This central control unit is connected via a mechanical bus to a separate working unit computer 29 of each rewinding unit 2 and also to a service unit controller.

  Of the bobbin / winding tube transfer system 3 described above, FIG. 1 includes a cup supply section 4, a storage section 5 that can be driven in a reversible manner, and a lateral transfer section 6 that leads to the rewinding section 2. Only the winding tube return section 7 is shown.

  The supplied spinning cup 9 is rewound at the feeding position 60 located in the rewound unit 2 within the range of the horizontal conveyance section 6 and wound up on the large volume traverse winding package 15. The individual rewinding units 2 have various devices that guarantee an orderly operation of these working units (which are well known and only schematically shown). These devices are, for example, the suction nozzle 12, the gripper tube 25 and the yarn coupling device 10. The yarn coupling device 10 is advantageously formed as a pneumatic splicer. The pneumatic splicer is slightly retracted with respect to the regular yarn path and has an upper clamping / cutting device and a lower clamping / cutting device.

  Such a rewinding unit 2 further includes a yarn tensioner 31 and another device (not shown) such as a yarn clearer or slab catcher, a paraffin processing device, a yarn cutting device, a yarn tension sensor, and a lower yarn sensor.

  The winding device generally indicated by reference numeral 24 has a package frame 28. The package frame 28 is supported so as to be movable about the pivot axis 13 and has a device for rotatably holding the winding package winding tube. During the winding process, the surface of the traverse package 15 is mounted on a grooved drum 14 and is driven by this grooved drum 14 via a frictional connection.

  As already mentioned above, each winding-back part 2 has one suction nozzle 12 and one gripper tube 25. The suction nozzle 12 and the gripper pipe 25 are respectively connected to a suction passage 37 extending over the machine length via a suction air connection portion.

  The suction nozzle 12 is supported so as to be pivotable about an axis 16. The swivel motion of the suction nozzle 12 is performed by the swivel drive device 11 disposed in the winding-back unit housing 36. The turning drive device 11 is controlled by the working unit computer 29. The suction nozzle 12 has a controllable connection (not shown) leading to the suction passage 37 in the range of the axis 16. The suction nozzle 12 has a tubular connection part 41 and a suction nozzle head part 40. The suction nozzle head portion 40 has a suction slit 44 for sucking or capturing the yarn end portion wound around the traverse winding package 15 or the yarn end portion wound around the traverse winding package 15. The suction nozzle head portion 40 is rotatably coupled to the end of the tubular connection portion 41. The suction nozzle head part 40 is in this case adapted to be rotated about the longitudinal axis 42 of the tubular connection part 41. The longitudinal axis 42 of the tubular connecting portion 41 is shown as a dashed line in FIGS. In order to automatically rotate the suction nozzle head portion 40, a rotation driving device 43 is arranged on the tubular connection portion 41. The suction nozzle 12 can be positioned by the swivel drive device 11 so that the suction slit 44 is positioned in the range of the traverse package 15, that is, in the vicinity of the traverse package 15. In order for the suction slit 44 to be able to catch the yarn end portion being wound or the wound yarn end portion, the suction nozzle head portion 40 is rotated by a rotation drive device 43 so that the suction slit 44 is traversed by a winding package. Positioned to face 15 directions. In this case, the suction slit 44 extends substantially parallel to the circumferential surface of the traverse package 15. For example, in the case of a conical package, a deviation from parallelism is generated based on the package shape.

  The gripper pipe 25 is supported so as to be pivotable about a pivot axis 26 and further has a gripper pipe flap 18 at its free end. The gripper tube flap 18 makes it possible to close the gripper tube opening.

  FIG. 1 shows the state of the yarn winding portion in the standard winding process. The suction nozzle 12 is positioned so that the suction slit 44 is positioned within the range of the traverse package 15, and the suction slit 44 is directed toward the traverse package 15. During the winding process, the diameter of the twill package 15 increases. Thereby, the space | interval of the suction slit 44 and the surrounding surface of the winding package 15 changes. To compensate for this, the suction nozzle 12 is moved about the axis 16 in relation to the diameter of the winding package 15. In this way, the interval of the suction slit 44 with respect to the peripheral surface of the traverse package 15 can be maintained within a predetermined range. This interval is set so small that the yarn end portion being wound or the wound yarn end portion can be captured as reliably as possible. At the same time, this spacing must be set so large that the traverse package 15 that rotates during the winding process does not collide with the tip of the suction nozzle head portion 40.

  The gripper tube 25 is positioned in a lower position during the standard winding process. That is, the gripper tube opening is positioned below the yarn coupling device 10 and is located in front of the running path of the yarn 50 from the viewpoint of the operator.

  The sequence at the time of yarn interruption is controlled by the working unit computer 29 in this embodiment. However, it is also possible for the control to be performed by another control device of the textile machine, for example a central control unit.

  At the time of yarn breakage or clearer cutting, the lower yarn 55 is usually held in the yarn tensioner 31 and the upper yarn 52 is wound on the surface of the traverse package 15.

  As soon as the yarn interruption is detected by the rewinding part, the suction nozzle 12 is sucked with suction air. At the same time, the braking process of the traverse package 15 is introduced. As a result, the suction nozzle 12 has already been sucked with suction air during the braking process. As a result, the yarn that is already being wound can be captured by the suction nozzle 12 or the winding process of the upper yarn 52 onto the traverse package 15 is improved.

  Alternatively, or if the upper thread supplement described above is not successful, the braked traverse package 15 can be slowly rotated in a direction opposite to the winding direction. In this case, the wound yarn end is captured by the suction nozzle 12 sucked by the suction air. According to the present invention, the suction slit 44 of the suction nozzle 12 is already located in the range of the traverse package 15, that is, in the vicinity of the traverse package 15. There is no time loss for turning the suction nozzle 12 upward.

  After the suction nozzle 12 accommodates the upper thread 52, the suction nozzle 12 pivots from the initial position illustrated in FIG. 1 to the thread insertion position illustrated in FIG. And the clearer, the cutting device, and the open clamping and cutting device disposed below the splicing device 10. In this case, the suction nozzle 12 pivots along a broken line 47.

  While the upper thread 52 has already been captured and inserted into the splicing device 10, the lower thread 55 is taken up by the gripper tube 25. For this purpose, the gripper tube opening 27 of the gripper tube 25 is swung to a range just below the thread tensioner, and the lower thread 55 is gripped pneumatically in this range. In this case, since the control protrusion arranged on the gripper tube flap 18 slides along the lower control slide guide mechanism (not shown), the gripper tube flap 18 is opened. As soon as the gripper tube 25 catches the lower thread 55, the gripper tube 25 can be turned slightly upward. As a result, the gripper pipe flap 18 is closed and the lower thread 55 is mechanically fixed.

  As soon as the suction nozzle 12 is positioned at the thread insertion position, the gripper tube 25 can be swung further upward along the broken line 48. During the turning to the upper end position, the thread transfer hook of the gripper pipe 25 arranged on the gripper pipe flap 18 crosses the path of the upper thread 52 and entrains the upper thread 52.

  The upper control slide guide mechanism 33 having a curved cam profile opens the gripper pipe flap 18 slightly within the range of the upper end position, and the lower thread 55 is tensioned by the action of the formed negative pressure. That is, the lower thread 55 is tensioned. Further, the upper thread 55 wound around the thread transfer hook is tensioned by the thread transfer hook disposed on the gripper pipe flap 18, that is, the upper thread 55 is also tensioned.

  Both the upper thread 52 and the lower thread 55 are inserted into the splicing device 10 so that inherent thread coupling can be performed. As soon as the yarn connection is carried out, the gripper tube 25 is pivoted again to the lower position, in which the gripper tube opening is located before or in front of the yarn runway.

  3 and 4 show front views of the winding portion shown in FIGS. 1 and 2, respectively. FIG. 3 shows a state immediately after the yarn joining by the splicing device 10. The winding process can start again. The gripper tube 25 is already again in the lower position, corresponding to FIG. 1, and the gripper tube 25 is also in this lower position during the normal winding process. However, the suction nozzle 12 is still positioned at the yarn insertion position. The suction nozzle head portion 40 is located behind the yarn 50 located in the yarn running path. That is, it is impossible to turn the suction nozzle 12 upward. This is because the suction nozzle head portion 40 will cut the yarn 50. Therefore, according to the present invention, the suction nozzle head portion 40 rotates 90 ° about the longitudinal axis 42 of the tubular connecting portion 41 from the first position shown in FIG. 3 to the second position. Be made. FIG. 4 shows the state after the suction nozzle head portion 40 has been rotated to the second position. The suction nozzle head portion 40 is no longer located behind the yarn 50 but is located side by side with the yarn 50. Then, the turning drive device 11 can be operated. Since the suction nozzle 12 pivots to the upper position, the suction nozzle head portion 40 and thus the suction slit 44 are located in the range of the traverse package 15. When the suction nozzle 12 reaches the initial position, the suction nozzle head portion 40 is again rotated back to the first position by 90 °.

  The return rotation of the suction nozzle head portion 40 to the first position can alternatively take place while the suction nozzle 12 is already turning. It is only necessary that the suction nozzle head portion 40 has passed through the yarn path.

DESCRIPTION OF SYMBOLS 1 Winding machine 2 Working part 3 Bobbin and winding pipe conveyance system 4 Cup supply section 5 Storage section 6 Lateral conveyance section 7 Winding pipe return section 8 Conveying disk 9 Spinning cup 10 Yarn coupling device 11 Swivel drive device 12 Suction nozzle 13 Swivel axis 14 Grooved drum 15 Twill winding package 16 Axis 18 Gripper tube flap 21 Twill winding package transport device 24 Winding device 25 Gripper tube 26 Swivel axis 28 Package frame 29 Working section computer 31 Yarn tensioner 33 Control slide guide mechanism 36 Rewinding Part housing 37 Suction passage 40 Suction nozzle head part 41 Connection part 42 Longitudinal axis 43 Rotation drive unit 44 Suction slit 50 Yarn 52 Upper thread 55 Lower thread 60 Feeding position

Claims (6)

A method of combining the upper thread (52) coupled to the winding package (15) and the lower thread (55) coupled to the feeding bobbin (9) in the working unit (2) of the winder (1). Because
The upper thread (52) is captured from the winding package (15) by the first suction nozzle (12), received and inserted into the thread coupling device (10);
In a method in which the lower thread (55) is captured and accommodated by the second suction nozzle (25) and inserted into the thread coupling device (10), and then both thread ends are coupled together.
During the winding process, the first suction nozzle (12) is moved to the initial position so that the suction slit (44) provided in the first suction nozzle (12) is located in the range of the winding package (15). The suction nozzle head portion (40) having the suction slit (44) of the first suction nozzle (12), the suction slit (44) in the direction of the winding package (15). Position it in the first position so that it faces,
When the yarn is interrupted, the first suction nozzle (12) is sucked with suction air, thereby capturing the upper yarn (52),
After the upper thread (52) has been captured and received, the first suction nozzle (12) is moved together with the received upper thread (52) to insert the upper thread (52) into the thread coupling device (10). To the thread insertion position of
After the yarn joining process, the suction nozzle head portion (40) rotatably supported by a tubular connection portion (41) provided in the first suction nozzle (12) is connected to the tubular connection portion. Rotating from the first position about the longitudinal axis (42) of (41) to a second position so that the first suction nozzle (12) can swivel along the yarn path,
After the suction nozzle head portion (40) has been rotated to the second position, the first suction nozzle (12) is swung back to its initial position by the side of the yarn runway and the first suction nozzle ( 12) after passing through the yarn path of the working part (2), the suction nozzle head part (40) is rotated again to the first position. A method of joining the lower thread.   2. The method according to claim 1, wherein the lower thread (55) and upper thread (52) are captured, received and inserted into the thread coupling device (10) partly simultaneously.   During the winding process, the position of the first suction nozzle (12) is related to the diameter of the winding package (15) and the spacing between the suction slit (44) and the winding package (15) is related to the winding process. The method according to claim 1, wherein the method is changed so as to remain within a predetermined range during the period.   4. The method as claimed in claim 1, wherein the first suction nozzle (12) is sucked with suction air already during the braking process of the winding package (15) when the yarn is interrupted. Working part (2) of the winder (1) provided with a device for coupling the upper thread (52) coupled to the winding package (15) and the lower thread (55) coupled to the feeding bobbin (9) ) And
A first suction nozzle (12) is provided, the first suction nozzle (12) being configured to capture, house and insert the upper thread (52) into the thread coupling device (10). Has been
A second suction nozzle (25) is provided, the second suction nozzle (25) is configured to capture, house and insert the lower thread (55) into the thread coupling device (10). In the working part of the winder,
The first suction nozzle (12) has a tubular connection part (41) and a suction nozzle head part (40) with a suction slit (44);
The suction nozzle head portion (40) is configured such that the suction nozzle head portion (40) moves from a first position to a second position about a longitudinal axis (42) of the tubular connection portion (41). Rotation drive device (for rotation), which is arranged in the tubular connection part (41) so that it can be rotated and the first suction nozzle (12) can swivel along the yarn path 43) is formed, and the first suction nozzle (12) with the suction slit (44) is within the range of the winding package (15) located in the working part (2) at the initial position. When positioned, the suction slit (44) is oriented at the first position in the direction of the winding package located in the working part, and the first suction nozzle (12) is the suction nozzle. Head part (40 From the yarn insertion position for insertion of the upper thread (52) into the yarn coupling device (10) through the side of the yarn (50) located in the yarn path in a state where is located at the second position. A working part of a winder, characterized in that it is adapted to turn to an initial position.   A control device (29) for controlling the joining process is provided, which controls the rotary drive device (43) after the yarn joining, and the suction nozzle head portion (40) to the second position. The swivel drive device (11) that controls to rotate and swivels the first suction nozzle (12) is moved to the initial position through the side of the yarn where the first suction nozzle (12) is located in the yarn path. After the first suction nozzle (12) has passed through the yarn path of the working section (2), the rotary drive device is moved back to the first position. The working unit according to claim 5, wherein the working unit is configured to be controlled to be rotated.

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