JP2017052652A - Method for splicing needle thread with bobbin thread in winding unit of winder and winding unit of winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for splicing a needle thread connected to a winding package with a bobbin thread connected to a feeding bobbin in a winding unit of a winder, and a winding unit that executes the method.SOLUTION: A first suction nozzle 12 has a backside guide outline which is stored by a second suction nozzle 25 and guides a prepared bobbin thread in front of a thread splicing device 10, which is turned into a position in front of the thread splicing device 10 together with the stored bobbin thread after the bobbin thread is captured and stored. Further the first suction nozzle 12 is turned, together with a stored needle thread, toward a terminating position 48 in order to insert the needle thread into the thread splicing device 10, after the needle thread is captured and stored. The backside guide outline of the first suction nozzle 12 moves the bobbin thread toward the thread splicing device 10 while forming a thread loop until the needle thread can be captured by a thread guide element to be inserted into the thread splicing device 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for splicing an upper thread connected to a winding package and a lower thread connected to a feeding bobbin in a winding unit of a winder, and at this time, the upper thread is wound up. Using a first suction nozzle whose suction slit is positioned at a starting position in the region of the winding package during the process, capturing from the winding package after the winding interruption, receiving and providing to the yarn splicer; It relates to a method in which the lower thread is captured, received and provided to the piecing device using a second suction nozzle, and then both yarn ends are spliced together by the piecing device. The invention also relates to a winding unit of an automatic winder for carrying out this method.

  In a winding unit of an automatic winder, a spinning bobbin, for example a spinning cup made in a ring spinning machine, with a relatively small yarn volume, is wound into a large volume winding package, often a winding package. returned. The yarn is monitored for yarn defects during the rewinding process, at which time the yarn defects are cut and removed, and instead a splice is formed which is substantially the same as the yarn.

  Therefore, in the winding unit of the winder, an upper thread that is called back from the winding package and a lower thread that arrives from the feeding bobbin are always required.

  When the yarn breaks, when the controlled clearing is cut or when the storage bobbin is replaced, the automatic yarn splicing device unique to the work unit is activated via the winding unit computer of the corresponding winding unit.

  That is, first, suction air is supplied to the suction nozzle on the surface of the winding package that rotates slowly in the direction opposite to the winding direction. After catching the upper thread end, the suction nozzle pivots to the thread insertion position, where the suction nozzle opening is positioned below the yarn splicer. At this time, the upper yarn extending between the winding package and the suction nozzle includes an electronic clearer disposed on the yarn splicing device, a clamp and cutting device positioned in this region, a yarn guide plate and a yarn. Guided by the corresponding guide profile of the guide yoke, it is drawn into the shear of the cutting device located below the splicing device.

  Then, the gripper tube positioned at the lower starting position pivots to the upper working position, bringing together the lower thread drawn from the feeding bobbin. During inward turning of the gripper tube to the upper working position, the lower thread, which is likewise guided along the corresponding thread guide profile, slides into the opened thread clamp and the opened cutting device. Next, the lower yarn and the upper yarn are cut to an appropriate length, prepared in a so-called untwisting tube (Aufloeseroehrchen), and connected to each other in a splicing device.

  DE-A-10202016853 discloses a method for splicing upper and lower threads in a winding unit of a winder and a winding unit of the winder.

  The first suction nozzle is positioned in the area of the winding package during the winding process. After the yarn interruption, the upper yarn is captured and accommodated by the first suction nozzle. The first suction nozzle then pivots to a yarn insertion position below the yarn splicer and inserts the upper thread into the yarn splicer. Thereafter, the lower thread captured and accommodated by the second suction nozzle is similarly inserted into the splicing device.

  A suction nozzle head portion is rotatably supported on the tubular connection portion so that the first suction nozzle can pass and swivel by the yarn located in the yarn runway after splicing. By separating and turning the suction nozzle head portion, the first suction nozzle can be swung to the upper position by passing the yarn located in the normal yarn running path, and can be swung back to the starting position again. This allows the suction slit to be located in the region of the winding package. In order to be able to catch the upper thread immediately upon the next thread interruption, the suction nozzle head part must be rotated again to the starting position.

  This method and such a winding unit according to DE-A-10201201653 have the disadvantage that the mode of operation described above is very cumbersome and expensive. This is because in this case each first suction nozzle in each individual winding unit consists of two parts, the suction nozzle head part is supported rotatably and must have a separate drive. Because there is. This could not be recognized in the field.

  Therefore, the subject of the present invention starting from the prior art is a method capable of quickly, simply and inexpensively realizing the splicing of the upper thread and the lower thread in the winding unit of the winder, and It is to provide a winding unit of an automatic winder that implements this method.

  This problem is solved according to the invention by the characteristic arrangement according to claim 1 for the method and by the characteristic arrangement according to claim 7 for the winding unit.

  Further preferred embodiments of the invention are described in the dependent claims.

  In order to solve the above-mentioned problem, according to the first aspect of the present invention, the second suction nozzle is swung to the position in front of the splicing device together with the received lower thread after the lower thread is captured and received. After the upper thread has been captured and received, the suction nozzle is rotated together with the received upper thread toward the end position for insertion of the upper thread into the yarn splicer. The guide profile on the dorsal side of the first suction nozzle moves the bobbin thread towards the splicing device, forming a thread loop (slack or curved) until it can be captured by the thread guide element for insertion into After the piecing process, the first suction nozzle and the second suction nozzle are turned back to their starting positions again, and at this time, the first suction nozzle is at the latest with the start of the package driving device, Lower thread Troll and then released and to extinguish the formed yarn loop.

  In this way, not only is it ensured that the upper thread and lower thread are safely and reliably inserted into the splicing device, but the first suction nozzle is positioned in front of the yarn runway after effective splicing, And it is guaranteed that it can be swung back and returned to its starting position without impairing the winding process. The advantage according to the invention is that the second suction nozzle is first positioned in front of the piecing device with the lower thread accommodated therein, and then in front of the piecing device with the upper thread in which the first suction nozzle is accommodated. It is obtained by positioning. Using the guide profile on the back side of the first suction nozzle, the lower thread is moved towards the splicing device to form a thread loop. At this time, during the downward movement of the first suction nozzle, the upper thread is guided to slide behind the thread guide element, so that the upper thread is captured by this thread guide element and inserted into the yarn splicing device. be able to. After both yarn ends have been spliced together, the winding process is started again and the winding unit is activated. Since neither the first suction nozzle nor the second suction nozzle is located behind the yarn path, both suction nozzles can return to their respective starting positions during the winding process and then swivel. Is positioned again in a ready-to-operate state, at which time the first suction nozzle can control and gradually release the lower thread at the start-up at the latest and the formed thread loop can be extinguished.

  The first suction nozzle can be positioned in front of the winding package during the winding process in the use of the present invention, so that the splicing can be done without the need for expensive and complicated structures. The time for the process can be as short as possible. It is important that both suction nozzles are not located behind the yarn path after the splicing process and can thus be turned back to their starting position again without any problem.

  In a preferred aspect of the present invention, the upper thread is inserted into the piecing device by a thread guide element formed as a thread hook of the second suction nozzle.

  In this way, the existing second suction nozzle formed as a gripper tube can be used without modification. The upper thread supplied by the first suction nozzle slides behind the first suction nozzle and remains there even when the upper thread is inserted into the splicing device by the thread hook. In order to insert the upper thread into the yarn splicing device, the second suction nozzle simply needs to turn further to the thread insertion position.

  According to claim 3, in an alternative configuration of the invention, the upper thread is inserted into the yarn splicing device by at least one yarn guide element formed as a pivoting lever of the yarn splicing device.

  In any case, the upper thread is located in the vicinity of the splicing device during the lowering movement or after the lowering movement of the first suction nozzle, so that the upper thread is captured there by the swiveling lever that already exists, It can be inserted into a yarn splicer.

  In a preferred embodiment as claimed in claim 4, the time for catching and receiving the lower thread and for providing the lower thread to the splicing device, and for catching and receiving the upper thread and for the splicing device. And the time for providing the upper thread overlap each other (simultaneously).

  While the first suction nozzle captures and accommodates the upper thread and positions it in front of the splicing device, the second suction nozzle captures and accommodates the lower thread at the same time and accommodates the lower thread. At the same time, it can be swung before the splicing device. This shortens the time for the splicing process and thus the winding interruption time.

  According to claim 5, preferably, during the winding process, the position of the first suction nozzle is changed in relation to the diameter of the winding package, so that the suction slit and the winding package during the winding process The interval is kept within a preset range.

  During the winding process, the diameter of the winding package gradually increases. If the position of the first suction nozzle is not adapted to the package diameter, the position of the first suction nozzle is selected so that the spacing between the suction slit and the winding package is initially rather large. It becomes necessary. This is because in this case the spacing decreases with increasing diameter, otherwise there is a risk of collision between the suction nozzle head portion and the winding package. However, at an extremely large interval, the reliability with which the yarn end can be accommodated from the winding package is reduced. Also, the pivoting of the first suction nozzle toward the winding package, which is performed for the first time after the occurrence of yarn interruption, requires additional time. In other words, the above-described embodiment is useful for maintaining the certainty that the yarn end can be found without extending the time required for piecing during the winding process.

  According to the sixth aspect of the present invention, the suction air is supplied to the first suction nozzle during the braking operation of the winding package when the yarn is interrupted.

  Since the first suction nozzle is positioned in front of the winding package in a ready state when the yarn is interrupted, the first suction nozzle is already supplied with suction air during the braking operation of the winding package. can do. This makes it possible to catch the yarn end that is rolled up already, that is, before the yarn end is completely wound up in the winding package. Or if it carries out as mentioned above, it has an influence with respect to mounting of the upper thread | yarn to a winding package, and can make it take up the wound yarn end part comparatively easily.

  The winding unit of the winding machine according to claim 7, wherein the first suction nozzle is a lower thread prepared by the second suction nozzle and prepared in front of the yarn splicing device. The guiding device has a guiding contour on the back side and is configured as follows: the second suction nozzle is threaded together with the lower thread accommodated after the lower thread is captured and accommodated The second suction nozzle is configured to be controlled so that it is swung to a position in front of the splicing device, and the first suction nozzle moves toward the end position together with the upper thread accommodated after the upper thread is captured and received. The first suction nozzle is controlled so as to be turned for insertion of the upper thread into the yarn splicing device. At this time, the guide contour on the back side of the first suction nozzle is Yarn splicing The lower thread is moved toward the splicing device while forming a thread loop until it can be caught by the thread guide element for insertion into the thread, and further the upper thread is inserted into the splicing device. Configured to control the first and second suction nozzles to control the guide element and so that after the splicing process, the first and second suction nozzles return to their starting positions and pivot again At this time, the first suction nozzle at this time controls and releases the lower thread with the activation of the package driving device, and the thread loop formed at this time is extinguished.

  The solution according to the invention has the advantage that the structural costs can be realized inexpensively. In addition to the configuration of the first suction nozzle according to the present invention, a control device for controlling the necessary functions needs to be controlled. At this time, the control is performed via a control device (which is usually a take-up unit computer) locally provided in each individual winding unit, or at the center using a central control unit. It can be carried out.

  In the first suction nozzle, preferably, the string of the thread extending between the second suction nozzle and the cup storage portion slides beside the first suction nozzle when the cup is replaced. It has another sliding contour that makes it possible.

  When the winding package is equipped with a spinning cup magazine (which may be formed as a so-called rotary magazine), the yarn is newly replaced with the yarn clamp of the splicing device when the spinning cup is replaced. It extends between the cup or cup reservoir. At this time, the yarn is guided through the back surface of the second suction nozzle and in a lateral direction with respect to the gripper tube opening in the front region, i.e. from the spinning cup to the back surface of the second suction nozzle. The position is shifted. The rear region of the yarn from the back side of the second suction nozzle to the yarn clamp is aligned with the guide contour on the back side of the first suction nozzle. When turning downward toward the splicing device together with the upper thread containing the first suction nozzle, the front area of the lower thread does not slide into the guide contour on the back side of the first suction nozzle, Only the rear area of the lower thread is captured by the dorsal guide profile and moved towards the splicing device. The front region of the lower thread slides on the side of this guide contour based on another guide contour on the back side of the first suction nozzle.

  According to a preferred aspect of the present invention, the yarn guide element is formed as a yarn hook in the second suction nozzle.

  It is preferred to use existing equipment and to use a threading hook of a second suction nozzle formed as a gripper tube. Such a configuration is inexpensive and does not require an additional drive.

  In an alternative configuration as claimed in claim 10, the yarn guide element is formed as at least one pivoting lever of the yarn splicing device.

  This arrangement can likewise be realized relatively simply and inexpensively and does not require any additional assembly that would have to be captured at each winding unit.

  Next, the present invention will be described in detail with reference to the embodiments shown in the drawings.

It is a side view which shows the winding unit of the winding machine in the winding process. It is a figure which shows roughly a part of winding unit provided with the structure based on this invention in the yarn splicing process. FIG. 3 is a diagram schematically showing a part of a winding unit having a configuration according to the present invention during a yarn splicing process at a later time than in FIG. 2. It is a figure which shows schematically a part of winding unit provided with the alternative structure which concerns on this invention in the yarn splicing process. It is a figure which shows schematically a part of winding-up unit provided with the structure and rotary magazine which concern on this invention during cup replacement | exchange. FIG. 6 is a diagram schematically showing a part of a winding unit including a configuration and a rotary magazine according to the present invention during cup replacement at a later time than in FIG. 5.

  FIG. 1 is a side view schematically showing an automatic winder generally indicated by reference numeral 1, and in this embodiment, a traverse autowinder. Such a winder 1 usually has a large number of work units (also referred to as a winder unit 2) of the same type between both end frames (not shown).

  In these winding units 2, as is known, and therefore not described in detail, the spinning cup 9 manufactured in the ring spinning machine is wound back on the large volume traverse winding package 15. At this time, the spinning cup 9 is a feeding bobbin from which the yarn 50 is fed. The traverse package 15 forms a winding package around which the yarn is wound up.

  After the manufacture, the traverse package 15 is handed over to the traverse package transport device 21 extending over the machine length using an automatically actuated service unit, preferably a traverse package changer (not shown), It is transported to a package charge station located on the machine end side or similar.

  Such a traverse autowinder 1 further includes a logistic device formed as a cup / winding tube transfer system 3. In the cup / winding tube transfer system 3, the spinning cup 9 or the empty tube is circulated on the transfer tray 8.

  Such an automatic winder 1 usually has a central control unit which is connected to the individual winding unit computers 29 and service units of the individual winding units 2 via a machine bus. Connected to the control unit.

  Of the above-described winding tube conveying system 3, FIG. 1 shows only a cup supply section 4, a reversible drivable storage section 5, a lateral conveying section 6 leading to the winding unit 2, and a winding tube return section 7. It is shown.

  The supplied spinning cup 9 is rewound onto the large volume traverse package 15 in the feeding unit 60 located in the region of the lateral conveyance section 6 in the winding unit 2. At this time, the individual winding units 2 have a variety of devices which, as is known, and therefore simply indicated, guarantee the orderly work of these working units. These devices are, for example, the suction nozzle 12, the gripper pipe 25 and the yarn splicing device 10.

  At this time, the yarn splicing device 10 is preferably formed as a pneumatic splicer. The pneumatic splicer is somewhat retracted with respect to the normal yarn path and has an upper clamping and cutting device and a lower clamping and cutting device.

  Such a winding unit 2 further includes devices such as a yarn tensioner 31, a yarn clearer 17 and other devices (not shown) such as a paraffin coating device, a yarn cutting device, a yarn tension sensor and a lower yarn sensor. Yes.

  The winding device generally indicated by reference numeral 24 comprises a package frame 28. The package frame 28 is supported so as to be rotatable about a pivot shaft 13 and rotates a traverse package winding tube. It has a holding device.

  During the winding process, the traverse package 15 is in contact with the grooved drum 14 on its surface and is driven by friction by this grooved drum 14.

  As already mentioned above, each winding unit 2 has a suction nozzle 12 and a gripper tube 25, each extending over the machine length via a suction air connection. It is connected to the existing suction passage 37.

  The suction nozzle 12 is supported so as to be rotatable about an axis 16. The swivel movement of the suction nozzle 12 is performed by the swivel drive device 11 arranged in the winding unit housing 36. The turning drive device 11 is controlled by a winding unit computer 29. The suction nozzle 12 has a controllable connection (not shown) leading to the suction passage 37 in the region of the axis 16. The suction nozzle 12 has a suction slit 44 for sucking or catching the yarn end portion wound up or wound around the traverse package 15. The suction nozzle 12 can position the suction slit 44 in the region of the traverse package 15 using the turning drive device 11. At this time, the suction slit 44 extends substantially parallel to the peripheral surface of the traverse package 15. Deviations from parallelism are caused by the package shape, for example in a conical package.

  The gripper tube 25 is supported so as to be pivotable about a rotation axis 26 and further has a gripper tube flap 18 at its free end that can close the gripper tube opening.

  FIG. 1 shows the state of the winding unit in a normal winding process. The suction slit 44 of the suction nozzle 12 is positioned in the region of the winding package 15 and faces the direction of the winding package 15. During the winding process, the diameter of the twill package 15 increases. As a result, the distance between the suction slit 44 and the peripheral surface of the traverse package 15 changes. To compensate for this change in spacing, the suction nozzle 12 is moved about the axis 16 relative to the diameter of the traverse package 15. In this way, the interval between the suction slit 44 and the peripheral surface of the traverse package 15 can be maintained within a preset range. At this time, this interval is set to be small so that the wound or wound yarn end can be captured as reliably as possible. At the same time, this spacing must be large so that the traverse package 15 rotating during the winding process does not collide with the suction nozzle 12.

  The gripper tube 25 is positioned at the lower position during the normal winding process. In other words, the gripper tube opening is positioned below the yarn splicing device 10 and is positioned in front of the runway of the yarn 50 as viewed from the operator's line of sight.

  The work sequence at the time of yarn breakage is controlled by the winding unit computer 29 in this embodiment. However, it is also possible for the control to be performed by other control devices of the textile machine, for example a central control unit.

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

  When the yarn interruption is recognized by the winding unit 2, suction air is supplied to the suction nozzle 12. At the same time, the braking operation of the traverse package 15 is introduced. As a result, the suction air is supplied to the suction nozzle 12 during the braking operation. As a result, the yarn that has already been wound can be captured by the suction nozzle 12, and the placement of the upper yarn 52 on the traverse package 15 is improved.

  Alternatively, or if the upper thread capture described above is not successful, the braked traverse package 15 can be slowly rotated in the direction opposite to the winding direction, The wound yarn end is captured by the suction nozzle 12 to which suction air is supplied. There is no time loss for upward swirling of the suction nozzle 12.

  After the suction nozzle 12 has received the upper thread 52, the suction nozzle 12 turns along the broken line 47 from its starting position to its end position shown in FIG.

  While the upper thread 52 has already been captured and conveyed toward the splicing device 10, the lower thread 55 is picked up using the gripper tube 25. For this purpose, the gripper tube opening of the gripper tube 25 is swung to a region immediately below the thread tensioner 31 where the lower thread 55 is gripped pneumatically. At this time, a control protrusion (Steuernocken) arranged on the gripper tube flap 18 slides along a lower control cam (Steuerkulisse) (not shown), thereby opening the gripper tube flap 18. As soon as the gripper tube 25 catches the lower thread, the gripper pipe 25 can be pivoted upward a small distance so that the gripper tube flap 18 is closed and the lower thread is mechanically fixed. The gripper tube 25 is swung upward along the broken line 49 to the front of the splicing device 10.

  As soon as the gripper tube 25 is positioned in front of the splicing device 10 together with the lower thread 55 accommodated, the suction nozzle 12 is located in the region of the splicing device 10 together with the accommodated upper thread 52 and the gripper tube 25 Can be swiveled before. At this time, the guide outline 45 on the back side of the suction nozzle 12 captures the lower thread 55 and moves the captured lower thread 55 toward the splicing device 10. During this operation, the upper thread 52 slides behind the thread hook (Fadenverlegehaken) 19 of the gripper tube 25.

  Thereafter, the suction nozzle 12 and the gripper tube 25 are further swung to the respective terminal positions 48 and 20, and the upper thread 52 and the lower thread 55 are inserted into the splicing device 10. At this time, the upper thread 52 is similarly inserted into the opened clamp and cutting device disposed below the yarn clearer 17, the cutting device, and the splicing device 10. The lower thread 55 is inserted into an open clamp and cutting device disposed on the splicing device 10 in addition to the splicing device 10.

  The upper control cam 33 serves to open the gripper tube flap 18 somewhat in the region of the upper end and to tension the lower thread 55 under the action of the negative pressure present. The yarn hooking hook 19 disposed on the gripper pipe flap 18 further tensions the upper yarn 52 hung on the yarn hooking hook 19.

  Then, the upper thread 52 and the lower thread 55 are inserted together into the splicing device 10 and the original splicing can be performed. As soon as the yarn splicing is carried out, the gripper tube 25 is pivoted again to the lower position, at which the gripper tube opening is located in front of the yarn runway.

  The suction nozzle 12 pivots back to its starting position, at which time it gradually releases the yarn loop (slack or bend) by the activation of the package drive, whereby the yarn loop is wound at a relatively low speed. The suction slit 44 is again located in the region of the traverse package 15 at this time. Similarly, the gripper tube 25 is controlled to turn back again, and the yarn loop formed thereby is gradually disappeared, so that no stress peak is generated at the time of rapid tension of the yarn.

  FIG. 2 schematically shows a part of the winding unit 2 when the lower thread 55 is captured by the guide contour 45 on the back side of the suction nozzle 12. While the suction nozzle 12 moves downward together with the upper thread 52 accommodated in the suction slit 44, the lower thread 55 is captured according to the present invention and is located at the splicing device 10 (at this point behind the suction nozzle 12). And therefore unrecognizable). At this time, the gripper tube 25 from which only a part can be seen is positioned in the area in front of the splicing device 10 and the lower thread 55 is prepared. Can be slid into the guide contour 45. The yarn clearer 17 is located on the splicing device 10.

  In FIG. 3, the same situation is shown at a somewhat later time. The suction nozzle 12 is further swiveled towards its end position 48. The upper thread 52 is still held in the suction slit 44, but is already positioned behind the thread hook 19 of the gripper pipe 25. The lower thread 55 extending from the gripper pipe 25 is already positioned behind the suction nozzle 12. At this point, the gripper tube 25 and the suction nozzle 12 are further driven. The gripper tube 25 reaches the end position 20 and the suction nozzle 12 reaches its end position 48. The upper thread 52 is captured by the thread hook 19 and both threads are inserted into the splicing device 10 and spliced together.

  The suction nozzle 12 and the gripper tube 25 are now located in front of the yarn path and can be swung back to their respective starting positions while the winding process is newly started and activated.

  An alternative embodiment is shown in FIG. The situation or time point shown in FIG. 4 corresponds to the situation or time point already shown in FIG. In this variation, there is no thread hook 19 in the gripper tube 25. Instead, the splicing device 10 has two swiveling levers 51, and both swiveling levers 51 can capture the upper thread 52 and insert it into the splicing device 10.

  FIGS. 5 and 6 show a special case of changing the spinning cup in the winding unit 2 provided with a rotary magazine (Rundmagazin) 56. The lower yarn 55 extending from the spinning cup 9 or from the yarn accommodating portion of the rotary magazine 56 and held by the yarn clamp 31 is guided through the back side of the gripper tube 25. As a result, the front area of the lower thread 55 is shifted laterally with respect to the guide contour 45 on the back side of the suction nozzle 12, whereas the rear area of the lower thread 55 corresponds to the suction nozzle 12. Is aligned with the guide contour 45 on the back side. When the suction nozzle 12 is swung further downward toward the splicing device 10, the thread portion of the lower thread 55 located behind the gripper pipe 25 slides into the back guide contour 45, and further splicing is performed. It is moved towards the device 10. On the other hand, the thread portion on the front side of the lower thread 55 slides laterally along another sliding contour 57 on the back side of the suction nozzle 12, so that after the piecing is performed, the suction nozzle 12 is in this case Since the nozzle is located in front of the yarn running path, the suction nozzle can return to its starting position and turn without any problem.

Claims (10)

In the winding unit (2) of the winding machine (1), the upper thread (52) connected to the winding package (15) and the lower thread (55) connected to the feeding bobbin (9) The upper thread (52) at this time, the first suction nozzle (44) in which the suction slit (44) is positioned at the starting position in the region of the winding package (15) during the winding process. 12) is used to capture, receive and provide the yarn splicing device (10) from the winding package (15) after the winding interruption, and the lower yarn (55) to the second suction nozzle (25). ) To capture, contain, and likewise provide to the splicing device (10),
Then, in a method of splicing both yarn ends to each other by the splicing device (10),
The second suction nozzle (25) is swung to the position in front of the splicing device (10) together with the received lower thread (55) after the lower thread (55) is captured and received,
The first suction nozzle (12) is moved into the splicing device (10) toward the end position (48) together with the upper thread (52) accommodated after the upper thread (52) is captured and accommodated. Swivel for insertion of the upper thread (52) into the first thread until the upper thread (52) can be captured by a thread guide element for insertion into the splicing device (10). A guide contour (45) on the back side of the suction nozzle (12) of 1 moves the lower thread (55) toward the splicing device (10) while forming a thread loop;
After the piecing process, the first suction nozzle (12) and the second suction nozzle (25) are returned to their starting positions and swiveled again,
At this time, the first suction nozzle (12) controls and releases the lower thread (55) and extinguishes the formed thread loop at the latest with the activation of the package driving device. A method of splicing upper and lower threads.   The method according to claim 1, wherein the upper thread (52) is inserted into the splicing device (10) by a thread guide element formed as a thread hook (19) of the second suction nozzle (25). .   The method according to claim 1, wherein the upper thread (52) is inserted into the splicing device (10) by at least one thread guide element formed as a pivot lever (51) of the splicing device (10). .   Time to capture and house the lower thread (55) and to provide the lower thread (55) to the splicing device (10); to capture and accommodate the upper thread (52); The method of claim 1, wherein the time for providing the upper thread (52) to the splicing device (10) overlaps one another.   During the winding process, the position of the first suction nozzle (12) is changed in relation to the diameter of the winding package (15) so that the suction slit (44) and the winding during the winding process are changed. 5. The method as claimed in claim 1, wherein the distance between the take-off package (15) remains within a preset range.   6. The method according to claim 1, wherein suction air is supplied to the first suction nozzle (12) during the braking operation of the winding package (5) when the yarn is interrupted. An automatic winder having a yarn splicing device (10) for splicing the upper yarn (52) connected to the winding package (15) and the lower yarn (55) connected to the feeding bobbin (9) ( 1) the winding unit (2),
A suction slit (44) is positioned at the starting position in the region of the winding package (15) during the winding process, and after the winding is interrupted, the upper thread (52) is captured, received and spliced ( A first suction nozzle (12) configured to provide before 10);
A second suction nozzle (25) configured to capture, contain and provide the lower thread (55) in front of the splicing device (10);
A control device (29) for controlling the operation sequence required for the yarn splicing process,
In a winding unit (2) for carrying out the method according to claim 1,
The first suction nozzle (12) guides the lower thread (55) received by the second suction nozzle (25) and prepared in front of the splicing device (10). Has a contour (45),
The control device (29) is configured as follows:
The second suction nozzle (25) is pivoted to a position in front of the splicing device (10) together with the lower thread (55) accommodated after the capture and accommodation of the lower thread (55). Configured to control the second suction nozzle (25);
The first suction nozzle (12) enters the splicing device (10) toward the end position (48) together with the upper thread (52) accommodated after the upper thread (52) is captured and accommodated. The first suction nozzle (12) is controlled so as to be turned for insertion of the upper thread (52). At this time, the back of the first suction nozzle (12) is configured. The side guide profile (45) causes the lower thread (55) to pass through the splicing device until the upper thread (52) can be captured by a thread guide element for insertion into the splicing apparatus (10). (10) move while forming a thread loop,
Further, the first and second suction nozzles are arranged to control the yarn guide element so that the upper yarn (52) is inserted into the yarn joining device (10) and after the yarn joining process. (12, 25) is configured to control the first and second suction nozzles (12, 25) so that they return to their starting position and turn again.
At this time, the first suction nozzle (12) controls and releases the lower thread (55) at the latest with the start of the package driving device, and the formed thread loop is extinguished. The winding unit (2) of the winder.   In the first suction nozzle (12), a string of yarn extending between the second suction nozzle (25) and the cup storage portion slides beside the first suction nozzle (12) when the cup is replaced. Winding unit (2) according to claim 7, characterized in that it has another sliding profile (57) that makes it possible.   The winding unit (2) according to claim 1, wherein the yarn guide element is formed as a yarn hook (19) in the second suction nozzle (25).   The winding unit (2) according to claim 1, wherein the yarn guide element is formed as at least one swivel lever (51) of the yarn splicing device (10).

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