JP2012020853A - Yarn winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winding device which is capable of improving the degree of freedom in layout and guiding yarn to a yarn splicing device in a short time and reduces the amount of the yarn to be wasted when the yarn is spliced.SOLUTION: An automatic winder includes a bobbin supporting unit 7, a winding unit 8, the yarn splicing device 14, a yarn guiding unit, a yarn trap 15, and a yarn trap driving unit 47. In a state wherein the yarn is divided, the yarn guiding unit guides the yarn on a package 30 side to the yarn splicing device 14. The yarn trap 15 is located so as to face a yarn-traveling path provided between the winding unit 8 and the yarn splicing device 14 and captures the yarn on a yarn-feeding bobbin 21 side in the state wherein the yarn is divided. The yarn trap driving unit 47 moves the yarn trap in the direction that the captured yarn is introduced into the yarn splicing device 14 while keeping the state wherein the captured yarn straddles the yarn splicing device 14.

Description

  The present invention relates to a yarn winding device. Specifically, the present invention relates to a configuration for guiding a yarn to a yarn joining device at the time of yarn joining.

  2. Description of the Related Art A yarn winding device such as an automatic winder that rewinds a winding package while removing a defect of a spun yarn wound around a yarn feeding bobbin is known.

  In yarn rewinding by an automatic winder, the yarn is unwound from the yarn feeding bobbin and monitored for yarn defects by a yarn defect detection device (clearer). The yarn is wound around the surface of the rotating winding package while traversing the yarn by the traverse device. When a yarn defect is detected, the yarn is cut and the portion of the yarn defect is removed, and then the cut yarn is connected (yarn spliced) by the yarn splicing device, and the winding to the package is resumed. Configured.

  In order to perform yarn joining in the yarn joining device, it is necessary to guide the yarn on the package side and the yarn on the yarn feeding bobbin side to the yarn joining device. Conventionally, after a suction flow is generated at the tip of a pipe-shaped yarn guide member to suck and catch the yarn, the yarn guide member is rotated to guide the yarn to the yarn joining device.

  The configuration of such a conventional automatic winder will be briefly described with reference to FIG. FIG. 17 is a schematic side view of a winder unit 90 provided in a conventional automatic winder. The winder unit 90 is configured to rewind the spun yarn 20 of the yarn supplying bobbin 21 around the package 30. Further, the winder unit 100 includes a yarn joining device 14 for performing yarn joining, a yarn guide pipe (upper yarn guide pipe 91, lower yarn guide pipe 92), and tension application for applying an appropriate tension to the yarn. A device 12, a clearer 17, and a cutter 16 disposed immediately upstream of the clearer 17 are provided.

  The yarn guide pipes 91 and 92 are connected to a negative pressure source (not shown), and suction flows can be generated at the suction port 91a of the upper yarn guide pipe 91 and the suction port 92a of the lower yarn guide pipe 92, respectively. It is configured as follows. Further, the upper thread guide pipe 91 is configured to be able to turn up and down around the fulcrum 91b. Similarly, the lower thread guide pipe 92 is configured to be able to rotate up and down around a fulcrum 92b.

  The clearer 17 is configured to detect a yarn defect (yarn defect) by monitoring the thickness of the traveling yarn 20 or the like. The cutter 16 is configured to immediately cut the yarn 20 when a yarn defect is detected in the clearer 17.

  In the conventional automatic winder as described above, the yarn joining operation when a yarn defect is detected will be described. That is, when a yarn defect is detected in the clearer 17 during winding of the yarn, the yarn 20 is cut by the cutter 16. Then, the yarn end on the downstream side of the cutter 16 is wound around the rotating package 30. On the other hand, the yarn upstream of the cutter 16 is sucked and caught by the suction port 92a of the lower yarn catching pipe 92 waiting on the upstream side of the tension applying device 12. Subsequently, the upper thread guide pipe 91 is rotated upward and the package 30 is reversely rotated. As a result, the yarn end is pulled out from the package 30 and sucked into the suction port 91 a of the upper yarn guide pipe 91. The state at this time is shown in FIG.

  Next, as shown in FIG. 19, the upper thread guide pipe 91 in a state where the thread (upper thread) on the package 30 side is sucked and held is rotated downward. As a result, the upper thread on the package 30 side is introduced into the yarn joining device 14. Subsequently, as shown in FIG. 20, the lower thread guide pipe 92 in a state where the thread (lower thread) on the yarn supplying bobbin 21 side is sucked and held is rotated upward. As a result, the lower thread on the yarn feeding bobbin 21 side is introduced into the yarn joining device 14. By operating the yarn joining device 14 in this state, the yarn joining between the upper yarn and the lower yarn is executed, and the yarn is continuously between the package 30 and the yarn supplying bobbin 21. By performing the yarn splicing as described above, the winding of the yarn around the package 30 can be continued.

  As described above, in the conventional automatic winder, the upper thread guide pipe 91 and the lower thread guide pipe 92 are rotated up and down while shifting the timing. This is because if the upper thread guide pipe 91 and the lower thread guide pipe 92 are simultaneously rotated, the two thread guide pipes 91 and 92 that are rotated interfere with each other.

  By the way, as described above, when the yarn 20 is cut by the cutter 16, the yarn between the cutter 16 and the suction port 92a of the lower yarn guide pipe 92 waiting on the downstream side of the tension applying device 12 is used. 20 is sucked into the lower thread guide pipe 92. At this time, the yarn 20 sucked into the lower yarn guide pipe 92 is a yarn on the upstream side of the clearer 17, and therefore the clearer 17 does not confirm the presence or absence of a yarn defect. That is, there is a high possibility that the portion sucked by the lower thread guide pipe 92 is a thread having no thread defect (a thread having no quality problem). However, in the above configuration, the portion of the yarn sucked by the lower yarn guide pipe 92 is discarded. Accordingly, during the yarn splicing operation when a yarn defect is detected by the clearer 17, the yarn 20 between the cutter 16 and the suction port 92a of the lower yarn guide pipe 92 waiting on the downstream side of the tension applying device 12 is used. Was a waste thread.

  In this regard, Patent Document 1 discloses a configuration in which a relay pipe (corresponding to the lower thread guide pipe) is waited immediately upstream of a slab catcher (corresponding to the clearer). With this configuration, when a yarn defect is detected by the slab catcher and the yarn is cut, only the yarn immediately upstream of the slab catcher is sucked into the relay pipe. Thus, according to the configuration of Patent Document 1, the amount of yarn sucked into the relay pipe (lower yarn guide pipe) when a yarn defect is detected and the yarn is cut is smaller than that in the configuration of FIG. can do.

JP 2001-192175 A

  By the way, in the configuration of Patent Document 1, for piecing, the relay pipe that has captured the lower thread is once swung downward and retracted, and then the upper thread is removed by a suction mouse (corresponding to the upper thread capturing pipe). After guiding to the yarn joining device, it is necessary to turn the relay pipe upward again to guide the lower yarn to the yarn joining device. This is because the relay pipe combines the function of sucking and catching the lower thread when the slab catcher is cut and the function of sucking and catching the thread of the replaced new yarn feeding bobbin. Another purpose is to avoid interference with a suction mouth that also turns up and down by temporarily retracting the relay pipe downward.

  However, since the relay pipe that sucks and captures the lower thread has to be swung up and down in this way, the configuration of Patent Document 1 requires a longer time for the splicing operation, resulting in lower package production efficiency. There was a problem of doing.

  Moreover, in the configuration of Patent Document 1, the loosened thread is sucked into the relay pipe in order to eliminate the slack of the thread when the relay pipe is turned downward. At this time, the sucked yarn is discarded, so that it becomes a waste yarn. As described above, in the configuration of Patent Document 1, the amount of yarn sucked into the relay pipe when the yarn is cut is smaller than that in the configuration in FIG. 17, but when the relay pipe is rotated downward thereafter. As a result, the amount of the lower thread sucked into the relay pipe is not much different from the automatic winder shown in FIG. Therefore, with the configuration of Patent Document 1, it is not possible to expect the effect of reducing wasted yarn when detecting yarn defects and performing piecing.

  In addition, as in Patent Document 1 and FIG. 17, in the case of a conventional configuration in which a yarn end is guided by rotating a thread guide member (relay pipe of Patent Document 1 or thread guide pipes 91 and 92 in FIG. 17). There is a problem that a mechanism for rotationally driving the yarn guide member is required, and the mechanism is complicated. Further, since the mechanism is complicated, it has been difficult to design a layout freely. In addition, the layout is limited in this respect because another configuration must be arranged so as to avoid interference with the rotating thread guide member.

  The present invention has been made in view of the above circumstances, and its main purpose is to improve the degree of freedom of layout and to guide the yarn to the yarn joining device in a short time and to occur at the time of yarn joining. An object of the present invention is to provide a yarn winding device in which the amount of waste yarn to be reduced is reduced.

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 an aspect of the present invention, a yarn winding device having the following configuration is provided. That is, the yarn winding device includes a bobbin support portion, a winding portion, a yarn joining device, a yarn guide portion, a yarn catching portion, and a driving portion. The bobbin support part supports a yarn feeding bobbin. The winding unit winds the yarn from the yarn supplying bobbin into a package. The yarn joining device is provided between the bobbin support portion and the winding portion, and the yarn on the yarn feeding bobbin side and the yarn on the package side in a state where the yarn connected from the yarn feeding bobbin to the package is divided. And splice. The yarn guide portion guides the yarn on the package side to the yarn joining device in a state where the yarn is divided. The yarn catching portion is arranged to face a yarn traveling path between the winding portion and the yarn joining device, and catches the yarn on the yarn feeding bobbin side in a state where the yarn is divided. The drive unit moves the yarn catching unit in a direction in which the captured yarn is introduced into the yarn joining device while maintaining the state where the yarn has straddled the yarn joining device.

  As described above, the yarn catching portion that catches the yarn on the yarn feeding bobbin side in a state where the yarn is divided is disposed at a position facing the yarn traveling path between the winding portion and the yarn joining device. When splicing, the yarn can be captured at a position where the yarn is introduced into the yarn splicing device. Thereby, the time cycle of yarn splicing can be shortened. Moreover, since a complicated drive member is not required, the entire yarn winding device can be configured simply.

  The yarn winding device is preferably configured as follows. That is, the yarn winding device includes a yarn defect detecting device and a yarn dividing unit. The yarn defect detection unit is disposed between the bobbin support unit and the winding unit and detects a yarn defect. The yarn dividing unit sets a yarn between the yarn supplying bobbin and the package into a divided state based on a dividing signal when the yarn defect detecting device detects a yarn defect.

  With this configuration, when a yarn defect is detected, the yarn is divided by the yarn dividing unit, and the divided yarn on the yarn feeding bobbin side is captured by the yarn capturing unit. Thereby, the time cycle of yarn joining can be shortened.

  In the yarn winding device, it is preferable that the yarn dividing portion is a cutter disposed between the yarn catching portion and the yarn defect detecting device.

  As a result, the yarn is separated (cut) at the predetermined position with the cutter, so that the yarn catching by the yarn catching portion can be reliably performed. Further, since the yarn is split at a predetermined position, the waste yarn generated when the yarn on the yarn feeding bobbin side is spliced can be made a constant amount, and waste yarn management becomes easy.

  In the above-described yarn winding device, it is preferable that the yarn catching portion is an air suction portion that catches yarn by an air suction force.

  Thereby, the divided yarn can be sucked and captured by the suction force of air. In addition, the fluff generated from the yarn can be recovered by applying a suction force during the winding operation.

  In the yarn winding device, the yarn catching portion may be a clamp portion that catches the yarn by gripping the yarn.

  In this case, since the yarn is captured by the clamp portion simultaneously with the yarn division by the cutter, the yarn can be reliably cut and captured.

  The yarn winding device can also be configured as follows. That is, the yarn catching portion is a clamp portion provided between the yarn joining device and the winding portion, and the clamp portion also operates as a yarn dividing portion by gripping the traveling yarn.

  In this case, the yarn catching unit performs the yarn splitting and catching simultaneously by holding the yarn between the yarn supplying bobbin and the winding unit with the clamp unit. Thus, since the yarn is divided by the clamp portion, the yarn end cannot be caught.

  The yarn winding device is preferably configured as follows. That is, the yarn guide part moves the package-side yarn to the yarn joining device by moving from the package side to the yarn feeding bobbin side beyond the yarn joining device in a state where the yarn on the package side is sucked and captured. It is configured to guide. A yarn retracting portion for retracting the yarn connected from the yarn supplying bobbin to the yarn catching portion from the locus on which the yarn guiding portion moves so as to guide the yarn to the yarn joining device is formed in the yarn guiding portion. .

  Thus, by retracting the yarn between the yarn supplying bobbin and the yarn catching portion, the yarn can be guided to the yarn joining device by the rotating yarn guide portion.

  In the yarn winding device, the yarn retracting portion is preferably an inclined portion formed on a traveling surface when the yarn guiding portion moves so as to guide the yarn to the yarn joining device.

  With this configuration, the yarn guide portion can be moved by retracting the yarn between the yarn supplying bobbin and the yarn catching portion so as to push away by the inclined portion. Thereby, since the yarn guide portion is not caught by the yarn, the yarn guide portion can guide the yarn to the yarn joining device.

  In the yarn winding device, a yarn accumulating device is preferably provided between the winding unit and the yarn joining device.

  Thereby, the winding of the yarn around the package is not interrupted during the yarn splicing, so that the winding state of the package is not disturbed. Furthermore, since the time cycle of the yarn splicing can be shortened with this configuration, it is possible to prevent the yarn stored in the yarn accumulating device from being lost. Therefore, it is possible to remove the yarn defect or replace the bobbin without interrupting the winding of the yarn around the package 30.

  The yarn winding device is preferably configured as follows. That is, the yarn guide portion is disposed in the vicinity of the yarn splicing device that sucks and blows off the yarn on the winding portion side to the vicinity of the yarn splicing device, and blows off by the yarn suction spouting portion. A second yarn catching unit that catches the introduced yarn and introduces it into the yarn joining device.

  As described above, the configuration in which the yarn is blown off and guided to the yarn splicing device simplifies the configuration for guiding the yarn, so that the degree of freedom in layout of each configuration is improved. Further, since the guide to the yarn joining device is completed simply by blowing off the yarn, the time required for the yarn guiding operation can be shortened and the production efficiency of the package can be improved.

  In the above-described yarn winding device, it is preferable that the yarn guide portion includes a deflection guide member that guides the yarn blown off by the yarn suction jet portion to the second yarn catching portion.

  In this way, by guiding the yarn blown off by the yarn suction jet portion to the second yarn catch portion by the deflection guide member, the yarn suction jet portion and the second yarn catch portion can be freely arranged, The degree of freedom in layout can be improved.

  The yarn winding device is preferably configured as follows. That is, the deflection guide member is a cylindrical member, and a slit is formed along the longitudinal direction of the cylinder. Further, the deflection guide member is disposed at a position deviated from the yarn traveling path along which the yarn travels when winding the yarn.

  Thus, by making the deflection guide member into a cylindrical shape, the yarn can be reliably guided to the yarn catching portion so as to pass through the inside of the tube. Further, by providing a slit in the cylindrical deflection guide member, the yarn that has been guided to the yarn catcher can be taken out from the slit. Moreover, since the deflection guide member is not connected to other members, the yarn taken out from the slit does not come into contact with the deflection guide member. With the above configuration, since the yarn can be run outside the deflection guide member during normal winding, it is possible to prevent the yarn from coming into contact with the deflection guide member and reducing the quality.

  In the yarn winding device, the yarn is preferably wound around a predetermined portion of the yarn accumulating device.

  When the yarn is wound around the predetermined position as described above, the yarn end wound around the yarn accumulating device is also present at the predetermined position when the yarn is divided. Therefore, if suction is performed from this predetermined position, the yarn end can be captured for piecing. Therefore, there is no need for a large suction port such as a suction mouse for sucking and capturing the yarn end from the package. This simplifies the shape of the yarn guide and improves the degree of freedom in layout. Furthermore, since the suction port can be made smaller, the amount of air consumed is also reduced.

The typical side view of the winder unit with which the automatic winder which concerns on 1st Embodiment of this invention was equipped. The figure explaining the structure of a thread | yarn storage apparatus. The figure which shows a mode when a yarn feeding bobbin becomes empty. The figure which shows a mode when a new yarn feeding bobbin is supplied. The figure which shows a mode when a lower thread is introduce | transduced into the lower thread blowing-up part. FIG. 3 is a schematic external perspective view of a lower thread blowing part. The side surface partial sectional view which shows the structure of a bobbin thread blowing part. The figure which shows a mode when a yarn trap sucks and captures a lower thread. The figure which shows a mode when a lower thread is introduce | transduced into the yarn splicing apparatus. The external appearance perspective view which shows the structure of a deflection | deviation guide member. The figure which shows a mode that an upper thread is guided by the deflection | deviation guide member. The figure which shows a mode when an upper thread | yarn is taken out from a deflection | deviation guide member. The figure which shows a mode when an upper thread | yarn is introduce | transduced into the yarn joining apparatus. The figure which shows the modification of 1st Embodiment. The typical side view of the winder unit with which the automatic winder which concerns on 2nd Embodiment of this invention was equipped. The figure explaining the structure of the yarn storage apparatus with which the winder unit of 2nd Embodiment was provided. The typical side view of the winder unit with which the conventional automatic winder was equipped. The figure which shows a mode when the upper thread | yarn and lower thread | yarn are suction-captured in the conventional winder unit. The figure which shows a mode when an upper thread | yarn is introduce | transduced into the yarn splicing apparatus in the conventional winder unit. The figure which shows a mode when the lower thread | yarn is introduce | transduced into the yarn splicing apparatus in the conventional winder unit.

  Next, an embodiment of the present invention will be described. FIG. 1 is a schematic side view of a winder unit 2 provided in an automatic winder (yarn winding device) according to a first embodiment of the present invention. The automatic winder of this embodiment has a configuration in which a large number of winder units 2 are arranged side by side. The automatic winder includes an unillustrated machine base management device for centrally managing the winder unit 2 and an unillustrated blower box including a compressed air source and a negative pressure source.

  As shown in FIG. 1, the winder unit 2 mainly includes a bobbin support portion 7 and a winding portion 8. The winder unit 2 is configured to unwind the yarn (spun yarn) 20 of the yarn feeding bobbin 21 supported by the bobbin support portion 7 and to wind it around the package 30. FIG. 1 shows a state of the winder unit 2 during normal winding. In this specification, “at the time of normal winding” means that the yarn is in a continuous state between the yarn supplying bobbin 21 and the package 30 and the yarn is unwound from the yarn supplying bobbin 21 so that the yarn is fed to the package 30. The state being wound.

  The bobbin support portion 7 is configured to be able to hold the yarn feeding bobbin 21 in a substantially upright state. Further, the bobbin support portion 7 is configured so that the yarn feeding bobbin 21 that has been emptied can be discharged. The winding unit 8 includes a cradle 23 configured to be capable of mounting the winding bobbin 22, and a traverse drum 24 for traversing the yarn 20 and driving the winding bobbin 22.

  The traverse drum 24 is disposed opposite to the winding bobbin 22, and the winding bobbin 22 is driven to rotate by rotating the traverse drum 24. Thereby, the yarn 20 stored in the yarn storage device 18 described later can be wound on the winding bobbin 22. Further, a traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and the traverse (traverse) of the yarn 20 with a predetermined width can be performed by the traverse groove. With the above configuration, the yarn 20 can be wound around the take-up bobbin 22 while traversing to form a package 30 having a predetermined length and a predetermined shape. In the following description, the terms “upstream” and “downstream” refer to the upstream and downstream sides when viewed in the yarn traveling direction.

  Each winder unit 2 includes a control unit 25. The control unit 25 includes hardware such as a CPU, ROM, and RAM (not shown) and software such as a control program stored in the RAM. The hardware and software cooperate to control each configuration of the winder unit 2. Moreover, the control part 25 with which each winder unit 2 is provided is comprised so that communication with the said machine stand management apparatus is possible. As a result, the operations of the plurality of winder units 2 included in the automatic winder can be centrally managed in the machine management device.

  The winder unit 2 includes various devices in the yarn traveling path between the bobbin support portion 7 and the winding portion 8. Specifically, in the yarn traveling path, the unwinding assisting device 10, the lower yarn blowing unit 11, the tension applying device 12, in order from the bobbin support portion 7 side to the winding portion 8 side, Upper thread catcher (second thread catcher) 13, yarn joining device 14, yarn trap (yarn catcher) 15, cutter (yarn splitting part) 16, clearer (yarn defect detector) 17, A yarn drawing portion (yarn suction / injection portion) 48 and a yarn accumulating device 18 are arranged.

  The unwinding assisting device 10 brings the movable member 40 into contact with the balloon formed on the upper portion of the yarn supplying bobbin 21 by swinging the yarn 20 to be unwound from the yarn supplying bobbin 21, and appropriately sets the size of the balloon. This is for assisting the unwinding of the yarn 20 by controlling.

  The lower thread blowing unit 11 is an air soccer device, and is configured to blow the lower thread on the yarn supplying bobbin 21 toward the yarn joining device 14 when the yarn supplying bobbin 21 is replaced (details will be described later). ).

  The tension applying device 12 applies a predetermined tension to the traveling yarn 20. The tension applying device 12 of this embodiment is configured as a gate type in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are configured to be rotatable by a rotary solenoid so that the comb teeth are in a meshed state or a released state. However, the configuration of the tension applying device 12 is not limited to this, and may be, for example, a disk-type tension applying device.

  The upper thread catcher 13 is disposed in the vicinity of the yarn joining device 14 (more precisely, immediately upstream of the yarn joining device 14). The upper thread catcher 13 is configured to suck and catch the upper thread on the yarn storage device 18 side at the time of yarn joining (details will be described later).

  The yarn trap 15 is disposed between the winding unit 8 and the yarn joining device 14 (more precisely, on the upstream side of the cutter 16 and immediately downstream of the yarn joining device 14). The tip of the yarn trap 15 is formed as a cylindrical member, is provided close to the traveling path of the yarn 20, is disposed so that the leading end faces the yarn traveling path, and has a negative pressure (not shown). Connected to the source. With this configuration, a suction air flow is generated at the tip of the yarn trap 15, and dust such as fluff adhering to the traveling yarn 20 can be sucked and removed. Thus, the yarn trap 15 is configured as an air suction portion. The yarn trap 15 is configured to suck and capture the lower thread on the yarn feeding bobbin 21 side when the cutter 16 cuts the thread 20 (details will be described later).

  The clearer 17 is configured to detect a yarn defect (yarn defect) such as a slab by monitoring the thickness of the yarn 20. When the clearer 17 detects the result of the yarn, the clearer 17 transmits a dividing signal instructing the cutting and removing of the yarn defect to the control unit 25 or the like. A cutter 16 for immediately cutting the yarn 20 in response to the dividing signal is disposed immediately upstream of the clearer 17.

  The yarn splicing device 14 is used when the clearer 17 detects a yarn defect and cuts the yarn with the cutter 16, when the yarn being unwound from the yarn feeding bobbin 21 is broken, or when the yarn feeding bobbin 21 is replaced. In such a case, when the yarn between the yarn feeding bobbin 21 and the package 30 is in a split state, the lower yarn on the yarn feeding bobbin 21 and the upper yarn on the yarn storage device 18 side are spliced. . As such a yarn splicing device 14, a device using a fluid such as compressed air or a mechanical device can be used.

  The upper thread drawing portion 48 is an air soccer device, and is configured to pull the upper thread on the yarn storage device 18 side toward the yarn joining device 14 side at the time of yarn joining (details will be described later).

  The yarn accumulating device 18 is configured to wind up the yarn 20 unwound from the yarn supplying bobbin 21 and temporarily store it. Thus, since the yarn storage device 18 is interposed between the bobbin support portion 7 and the winding portion 8 and a certain amount of yarn 20 is stored on the yarn storage device 18, the yarn supply bobbin for some reason. Even when the unwinding of the yarn from 21 is interrupted (for example, during the yarn joining operation), the winding unit 8 can wind the yarn stored on the yarn storage device 18, The winding of the yarn 20 around the package 30 can be continued. Thus, since the winding operation in the winding unit 8 is not interrupted by the yarn joining operation or the like, the package 30 can be generated at high speed and stably. Further, unlike the conventional yarn winding device, the yarn is not sucked and captured from the package 30 every yarn splicing operation, so that the surface of the package 30 can be prevented from being disturbed. Furthermore, since the occurrence of yarn breakage at the winding unit 8 is reduced, it is possible to prevent the yarn from falling on the end face of the package 30 or causing a winding shape defect.

  A magazine-type bobbin supply device 26 is disposed on the front side of the winder unit 2. The bobbin supply device 26 includes a rotary magazine can 27. The magazine can 27 is configured to hold a plurality of spare yarn feeding bobbins 21. The bobbin supply device 26 is configured to supply a new yarn supplying bobbin 21 to the bobbin support portion 7 by intermittently rotating the magazine can 27. The bobbin supply device 26 includes a yarn end holding unit 28 that sucks and holds the yarn end of the yarn feeding bobbin 21 held by the magazine can 27.

  Next, the yarn accumulating device 18 will be described with reference to FIG. As shown in FIG. 2, the yarn storage device 18 mainly includes a yarn storage roller 32 and a roller drive motor 33.

  The yarn storage roller 32 is formed as a substantially cylindrical member, and is configured so that the yarn 20 can be stored by winding the yarn 20 around the outer peripheral surface thereof. The roller drive motor 33 is configured to rotationally drive the yarn accumulating roller 32 about its central axis. The operation of the roller drive motor 33 is controlled by the control unit 25. Here, the end of the yarn accumulating roller 32 on the side where the roller drive motor 33 is disposed is referred to as a base end, and the opposite end is referred to as a front end.

  As shown in FIG. 2, the proximal end portion of the yarn accumulating roller 32 is formed with a tapered proximal end taper portion 32 a whose diameter increases toward the end portion. On the other hand, a tapered tip side taper portion 32 b whose diameter increases toward the end portion is formed at the tip portion of the yarn accumulating roller 32. By forming the taper portion in this manner, the yarn 20 is prevented from slipping from the end portion of the yarn accumulating roller 32. In addition, a portion (a portion having a substantially constant diameter) formed in a cylindrical shape in the yarn accumulating roller 32 is referred to as a cylindrical portion 32c. The cylindrical portion 32c is also formed with a small taper for moving the stored yarn to the downstream side.

  A guide tube 34 of the upper thread drawing portion 48 is disposed in the vicinity of the boundary portion between the proximal end taper portion 32a and the cylindrical portion 32c of the yarn accumulating roller 32 (note that the configuration of the upper yarn drawing portion 48 will be described later). To do). The guide cylinder 34 is configured as a cylindrical member, and one end portion (suction side end portion 34 a) thereof is disposed close to the surface of the yarn accumulating roller 32. During normal winding, the yarn on the yarn supplying bobbin 21 side is introduced into the guide tube 34 from the other end (ejection side end 34b) of the guide tube 34, and from the suction side end 34a. The yarn is drawn toward the surface of the yarn accumulating roller 32. As described above, during normal winding, the yarn 20 on the yarn feeding bobbin 21 side is guided to the surface of the yarn accumulating roller 32 by the guide tube 34.

  By rotating the yarn storage roller 32 in one direction while the yarn 20 is wound around the yarn storage roller 32, tension is applied to the yarn 20 on the upstream side (yarn supply bobbin 21 side) of the yarn storage device 18. can do. Thereby, the yarn 20 can be unwound from the yarn supplying bobbin 21 and the yarn 20 can be wound around the surface of the yarn accumulating roller 32. As shown in FIG. 2, since the yarn 20 is guided to the boundary portion between the proximal end side tapered portion 32a and the cylindrical portion 32c, the yarn 20 is sequentially wound while pushing up the previous yarn layer from the proximal end portion side of the cylindrical portion 32c. To go. As a result, the yarn 20 on the yarn accumulating roller 32 is pushed by the newly wound yarn 20 and sequentially fed toward the tip end side on the surface of the cylindrical portion 32c. In this way, on the outer peripheral surface of the yarn accumulating roller 32, the yarns 20 are spirally aligned and wound regularly from the base end side. In the following description, rotating the yarn accumulating roller 32 during normal winding is referred to as “forward rotation”. Further, when the yarn accumulating roller 32 is rotated in the direction opposite to the normal rotation is referred to as “reverse rotation”.

  On the other hand, the yarn 20 on the yarn accumulating roller 32 is pulled out from the tip side taper portion 32b of the yarn accumulating roller 32 and sent to the downstream side (winding portion 8 side). Further, in the tip side taper portion 32b, the yarn 20 on the yarn accumulating roller 32 is drawn to the downstream side via a drawing guide 37 disposed on an extension line of the central axis of the yarn accumulating roller 32. . In this way, by configuring the yarn 20 to be drawn out on the extension line of the central axis of the yarn storage roller 32, the yarn 20 can be drawn from the yarn storage roller 32 regardless of the rotation state of the yarn storage roller 32. it can. That is, even when the yarn accumulating roller 32 is in the normal rotation, reverse rotation, or rotation stopped state, the winding unit 8 can unwind the yarn 20 from the yarn accumulating roller 32 and wind it around the package 30.

  A rubber band (O-ring) 32d is disposed at the boundary between the cylindrical portion 32c and the tip side taper portion 32b of the yarn accumulating roller 32, and passes between the rubber band 32d and the surface of the yarn accumulating roller 32. The yarn 20 is pulled out from the yarn storage roller 32. The rubber band 32d itself is prevented by the tip side taper portion 32b from being pulled off by the thread. With the configuration described above, an appropriate tension can be applied to the yarn 20 unwound from the yarn accumulating roller 32 by tightening the rubber band 32d against the yarn accumulating roller 32, so that the unraveling of the yarn 20 can be stabilized. Can do. Furthermore, since the yarn lump can be unwound and unwound, the problem of sluffing that the yarn on the yarn storage roller 32 becomes a lump and comes off at once can be prevented. In addition, there is also an action that does not generate balloons generated by swinging when the yarn is unwound.

  In the vicinity of the yarn accumulating roller 32, there is an upper limit sensor 36 for detecting that the yarn 20 on the yarn accumulating roller 32 has exceeded a predetermined upper limit amount, and a lower limit sensor for detecting that the yarn 20 has become less than a predetermined lower limit amount. 35 are arranged. The detection results of the lower limit sensor 35 and the upper limit sensor 36 are sent to the control unit 25.

  When the controller 25 detects that the yarn on the yarn accumulating roller 32 has become less than the lower limit, the controller 25 appropriately controls the roller drive motor 33 to increase the rotational speed of the yarn accumulating roller 32. Thereby, the speed at which the yarn 20 is wound around the yarn accumulating roller 32 increases. On the other hand, during normal winding, the rotational speed of the traverse drum 24 is substantially constant, so the speed at which the yarn 20 on the yarn accumulating roller 32 is unwound toward the package 30 is substantially constant. The controller 25 controls the roller drive motor 33 so that the speed at which the yarn 20 is wound around the yarn storage roller 32 is larger than the speed at which the yarn 20 is unwound from the yarn storage roller 32. Thus, the storage amount of the yarn 20 on the yarn storage roller 32 can be gradually increased.

  On the other hand, when the controller 25 detects that the yarn on the yarn accumulating roller 32 has exceeded the upper limit, the controller 25 appropriately controls the roller drive motor 33 to reduce the rotational speed of the yarn accumulating roller 32. Thereby, the speed at which the yarn 20 is wound around the yarn accumulating roller 32 is reduced. The control unit 25 controls the roller drive motor 33 so that the speed at which the yarn 20 is wound around the yarn storage roller 32 is smaller than the speed at which the yarn 20 is unwound from the yarn storage roller 32. Thus, the amount of the yarn 20 on the yarn accumulating roller 32 can be gradually reduced. By the control as described above, the storage amount of the yarn 20 on the yarn storage roller 32 can be kept to be equal to or more than the lower limit amount and less than the upper limit amount.

  Next, the replacement operation of the yarn feeding bobbin 21 will be described.

  When there is no yarn in the yarn supplying bobbin 21, all the yarn remaining in the yarn supplying bobbin 21 is taken up by the yarn accumulating device 18, and as shown in FIG. 3, the yarn supplying bobbin 21 (empty bobbin) And the yarn storage device 18 are in a discontinuous state. Therefore, in order to continue winding the yarn 20, it is necessary to connect (yarn splice) the yarn on the new yarn feeding bobbin 21 and the yarn on the yarn storage device 18 after supplying the new yarn feeding bobbin 21. There is. Even if the yarn supplying bobbin 21 becomes empty, the yarn storage device 18 stores a predetermined amount of yarn 20, so that the package 30 in the winding unit 8 is used until the stored yarn 20 disappears. There is no need to interrupt the winding of the yarn 20 onto the thread. Hereinafter, the exchange operation of the yarn feeding bobbin 21 will be described in order.

  First, the controller 25 discharges the bobbin that has been emptied by driving the bobbin support 7. Subsequently, the control unit 25 supplies the new yarn supplying bobbin 21 to the bobbin support unit 7 by driving the magazine can 27 of the bobbin supply device 26. At this time, as shown in FIG. 4, the new yarn supplying bobbin 21 is supplied in an oblique state. As described above, since the yarn end of the yarn feeding bobbin 21 held by the magazine can 27 is sucked and held by the yarn end holding portion 28, the yarn feeding bobbin 21 supplied from the magazine can 27, The yarn 20 is pulled between the yarn end holding portion 28 and the yarn end holding portion 28. In the following description, the thread 20 on the yarn feeding bobbin 21 side is referred to as a lower thread 20a when particularly necessary.

  Subsequently, as shown in FIG. 5, the control unit 25 drives the bobbin support unit 7 to erect the new yarn feeding bobbin 21 and drives the yarn moving member 43 disposed in the vicinity of the lower yarn blowing unit 11. To do. The yarn shifting member 43 is configured to be able to engage with the lower yarn 20 a between the yarn supplying bobbin 21 and the yarn end holding portion 28 and to be movable toward the lower yarn blowing portion 11. Then, by driving the yarn shifting member 43 in a state of being engaged with the lower yarn 20a, the lower yarn 20a can be moved toward the lower yarn blowing portion 11 as shown in FIG. It is configured.

  The lower thread blowing portion 11 is formed in a block shape as shown in the external perspective view of FIG. In the block, a thread introduction hole 41 and a slit 42 communicating with the thread introduction hole 41 are formed. The lower thread 20a attracted by the thread gathering member 43 is introduced into the thread introduction hole 41 through the slit 42.

  Here, the lower thread blowing portion 11 will be described in more detail with reference to a partial cross-sectional view of FIG. As shown in FIG. 7, the lower thread blowing section 11 is formed with an air ejection nozzle 44 that communicates with the thread introduction hole 41. The air jet nozzle 44 is configured as a long and narrow round hole. The air ejection nozzle 44 is connected to an appropriate compressed air source 46 via an electromagnetic valve 45. The electromagnetic valve 45 is controlled by the control unit 25. With the above configuration, when the control unit 25 opens the electromagnetic valve 45, compressed air is supplied from the air ejection nozzle 44 into the yarn introduction hole 41.

  The ejection port of the air ejection nozzle 44 is formed so as to eject air toward the downstream side in the traveling direction of the yarn 20. Therefore, when compressed air is ejected from the air ejection nozzle 44, an air flow that flows toward the downstream side in the traveling direction of the yarn 20 (upward in FIG. 7) is generated in the yarn introduction hole 41. Thereby, the lower thread 20a introduced into the thread introduction hole 41 can be blown away toward the downstream side on the air flow.

  The continuation of the replacement operation of the yarn feeding bobbin 21 will be described. When the lower yarn 20a is introduced into the yarn introduction hole 41 by the yarn shifting member 43, the control unit 25 cuts the lower yarn 20a between the yarn supplying bobbin 21 and the yarn end holding unit 28 with a cutter (not shown). Then, the solenoid valve 45 is opened to supply compressed air to the air ejection nozzle 44. Thereby, an air flow toward the downstream side is generated in the yarn introduction hole 41, and the lower yarn 20a is blown off toward the downstream side by the air flow.

  The yarn trap 15 described above is disposed on the downstream side of the lower thread blowing section 11, and a suction flow is generated at the tip thereof. The lower yarn 20 a blown off from the lower yarn blowing section 11 is sucked and captured by the yarn trap 15. The state at this time is shown in FIG. Since the yarn trap 15 is disposed on the downstream side of the yarn joining device 14, in a state where the yarn trap 15 has captured the lower yarn 20a, the lower yarn 20a between the yarn trap 15 and the yarn feeding bobbin 21 is The yarn joining device 14 is straddled.

  In the vicinity of the yarn trap 15, a yarn trap drive unit 47 that can drive the yarn trap 15 in a direction to approach / separate the yarn traveling path is disposed. The operation of the yarn trap driving unit 47 is controlled by the control unit 25. When the yarn trap 15 sucks and captures the lower yarn 20a, the control unit 25 operates the yarn trap driving unit 47 to drive the yarn trap 15 away from the yarn travel path. As a result, as shown in FIG. 9, the lower thread 20 a is moved backward (leftward in FIG. 9) while maintaining the state of straddling the yarn joining device 14, so that the lower thread 20 a is transferred to the yarn joining device 14. It is configured to be introduced. As described above, since the lower thread 20a can be introduced into the yarn joining device 14 by the lower thread blowing section 11 and the yarn trap 15, the lower thread blowing section 11 and the yarn trap 15 constitute a lower thread guide section. I can say that.

  As described above, since the lower thread 20a is blown off by the air flow and guided to the yarn joining device 14, for example, compared with a lower thread guide member (lower thread guide pipe 92 in FIG. 17) provided in a conventional winder unit, for example. With a simple structure, the lower thread can be guided quickly. In addition, the control part 25 will be in the state which closed the solenoid valve 45, after the operation | movement which guides the lower thread 20a to the yarn joining apparatus 14 is complete | finished. Thereby, it can prevent that compressed air is consumed wastefully.

  The control unit 25 performs control for guiding the yarn on the yarn storage device 18 side to the yarn joining device 14 before and after the above-described control for guiding the lower yarn 20a to the yarn joining device 14. This will be specifically described below. In the following description, when particularly necessary, the yarn 20 on the yarn storage device 18 side is referred to as an upper yarn 20b.

  First, the upper thread drawing portion 48 will be described with reference to FIG. The upper thread drawing portion 48 includes the above-described guide cylinder 34 and an air ejection nozzle 49 that communicates with the guide cylinder 34. The air ejection nozzle 49 is formed as a long and narrow round hole. The air ejection nozzle 49 is connected to an appropriate compressed air source 46 via the electromagnetic valve 51. The electromagnetic valve 51 is controlled by the control unit 25. With the above configuration, when the control unit 25 opens the solenoid valve 51, compressed air is supplied from the air ejection nozzle 49 into the guide tube 34.

  The ejection port of the air ejection nozzle 49 is formed so as to eject air toward the ejection side end portion 34b (so that air is ejected in a direction away from the surface of the yarn accumulating roller 32). Therefore, when compressed air is ejected from the air ejection nozzle 49, an air flow that flows toward the ejection side end 34 b is generated in the guide cylinder 34. As a result, air is ejected from the ejection side end portion 34b. On the other hand, a suction flow is generated at the opposite end portion (suction side end portion 34a) following the flow of air in the guide tube 34.

  When guiding the upper yarn 20b on the yarn storage device 18 side to the yarn joining device 14, the control unit 25 opens the electromagnetic valve 51 and supplies compressed air from the air ejection nozzle 49 into the guide tube 34. To do. In this state, the control unit 25 controls the roller drive motor 33 to rotate the yarn accumulating roller 32 in the reverse direction. Thereby, the yarn end is unwound from the base end portion side of the cylindrical portion 32c of the yarn accumulating roller 32, and the yarn end is sucked by the suction flow generated at the suction side end portion 34a of the guide tube 34, It is introduced into the guide tube 34.

  In the conventional automatic winder as shown in FIG. 17, the upper yarn guide pipe 91 for sucking and capturing the yarn end wound around the package 30 needs a suction port 91a enlarged in the width direction of the package. there were. This is because traversing is performed when winding the yarn around the surface of the package 30, so that the clearer 17 detects the yarn defect and cuts the yarn with the cutter 16, or all the yarn on the yarn supplying bobbin 21 is wound. After being taken, since it is not known where the yarn end of the yarn wound around the package 30 is in the width direction of the package 30, the width direction of the package 30 is surely sucked and captured. This is because it was necessary to generate a suction flow over the entire area.

  In this regard, in the automatic winder of the present embodiment, the yarn 20 is regularly wound on the yarn accumulating roller 32 in an aligned manner from the boundary portion between the cylindrical portion 32c and the proximal end side tapered portion 32a. This is because the yarn on the yarn feeding bobbin 21 side is guided to the boundary portion between the cylindrical portion 32c and the proximal end side tapered portion 32a by the guide tube 34 during normal winding. Therefore, after the clearer 17 detects the yarn defect and cuts the yarn with the cutter 16, or after all the yarn on the yarn feeding bobbin 21 is wound up, the yarn end of the yarn taken up by the yarn accumulating roller 32 is Since it must be in the vicinity of the boundary portion between the cylindrical portion 32c and the proximal end side tapered portion 32a, the yarn end can be reliably sucked if a suction flow is generated only in the boundary portion. That is, by generating a suction flow in the guide tube 34, the yarn end can be reliably sucked. As described above, the automatic winder of the present embodiment provided with the yarn accumulating device 18 does not require an enlarged suction port for sucking the upper yarn as in the conventional configuration, and therefore, for sucking the upper yarn. Sufficient suction flow can be generated with less energy.

  The yarn end sucked into the guide tube 34 is blown out from the ejection side end portion 34b on the air flow generated in the guide tube 34. A yarn inlet 61 of the deflection guide member 60 is disposed at the tip in the direction in which air is ejected from the ejection side end portion 34b.

  As shown in the perspective view of FIG. 10, the deflection guide member 60 is configured as a curved cylindrical member, and has one end side as a yarn inlet 61 and the other end side as a yarn outlet 62. The air ejected from the ejection side end portion 34 b of the guide tube 34 flows into the deflection guide member 60 from the yarn inlet 61 and guides a curved path by passing through the curved deflection guide member 60. Then, the yarn is discharged from the yarn outlet 62 to the outside of the deflection guide member 60. Accordingly, the upper yarn 20b blown out from the upper yarn drawing portion 48 on the blown air rides on the air flow flowing in the deflection guide member 60 as shown in FIG. Guide to 62.

  An upper thread catcher 13 is disposed at the tip of the thread outlet 62. The upper thread catcher 13 is connected to a negative pressure source (not shown), and is configured to generate a suction flow at a suction flow generation port formed at the tip thereof. A movable lid portion 13 a is disposed at the suction flow generating port of the upper thread catching portion 13. The lid portion 13a is configured to be drivable by the control unit 25, and can be switched between a state where the suction flow generation port is closed and a state where the suction flow generation port is opened.

  The controller 25 drives the lid portion 13a to open the suction flow generating port of the upper yarn catching portion 13 before and after the upper yarn drawing portion 48 pulls the upper yarn 20b from the yarn storage device 18. Then, a suction flow is generated in the upper thread catching portion 13. With the above configuration, the upper thread catcher 13 can suck and hold the upper thread 20 b guided to the thread outlet 62 of the deflection guide member 60. The control unit 25 performs control so that the suction flow generating port is closed by the lid portion 13a when it is not necessary to cause the upper thread catching unit 13 to generate a suction flow. Thereby, since it can prevent that air flows into the inside of the upper thread | yarn capture | acquisition part 13, it can prevent that useless energy is consumed. In addition, instead of the configuration in which the presence or absence of the suction air flow is controlled by opening and closing the lid, a configuration in which the air flow is controlled by, for example, an electromagnetic valve may be used.

  As shown in FIG. 10, the deflection guide member 60 is formed with a slit 63 that communicates the outside and the inside of the deflection guide member 60. The slit 63 is formed so as to connect the yarn inlet 61 and the yarn outlet 62 along the longitudinal direction of the cylindrical deflection guide member 60. Further, the deflection guide member 60 of the present embodiment is formed in a substantially U shape, and the slit 63 is formed along an inner portion of the U shape.

  Since the slit 63 is formed in the deflection guide member 60 in this way, when the upper thread catching portion 13 sucks and captures the upper thread 20b guided to the thread outlet 62, as shown in FIG. The upper thread 20b is taken out of the deflection guide member 60.

  Then, the upper yarn 20b taken out from the deflection guide member 60 is further sucked by the upper yarn catching section 13, so that the upper yarn 20b can be introduced into the yarn joining device 14 as shown in FIG. It is configured. As described above, since the upper thread 20b is guided to the yarn joining device 14 by the upper thread drawing part 48, the deflection guide member 60, and the upper thread catching part 13, the upper thread drawing part 48, the deflection guide member 60 and the upper thread catching portion 13 can be said to constitute an upper thread guide portion (yarn guide portion).

  As described above, since the upper yarn 20b is blown off by the air flow and guided to the yarn joining device 14, for example, compared with an upper yarn guide member (upper yarn guide pipe 91 in FIG. 17) provided in a conventional winder unit. With a simple structure, the upper thread can be guided quickly. Accordingly, since the time required for the yarn joining operation can be shortened, the generation efficiency of the package 30 can be improved.

  When the operation of guiding the upper yarn 20b to the yarn joining device 14 is finished, the control unit 25 stops the reverse rotation of the yarn accumulating roller 32 and closes the electromagnetic valve 51. Subsequently, the control unit 25 closes the lid 13 a of the upper thread catching unit 13. Then, the control unit 25 operates the yarn joining device 14 to join the upper yarn 20b and the lower yarn 20a.

  When the yarn splicing is completed, the control unit 25 starts normal rotation of the yarn accumulating roller 32 and starts unwinding the yarn from the new yarn supplying bobbin 21. Further, the controller 25 drives the yarn trap 15 to a position approaching the yarn travel path before and after starting the forward rotation of the yarn accumulating roller 32 to restart sucking and removing the fluff and catching the upper yarn. The lid portion 13a of the portion 13 is opened for a short time. Thereby, the broken end of the yarn that has been caught by the upper yarn catching portion 13 (upper yarn cut by the yarn splicing) is sucked and removed. Thereby, the normal winding operation shown in FIG. 1 can be resumed.

  Since the upper yarn 20b is taken out from the inside of the deflection guide member 60 as described above, the yarn 20 is placed inside the deflection guide member 60 during normal winding (the state shown in FIG. 1). Not to pass through. Here, if it is assumed that the yarn 20 is configured to pass through the inside of the deflection guide member 60 even during a normal winding operation, the yarn 20 contacts the deflection guide member 60 and is damaged. There is a risk of quality degradation. In this respect, by configuring as described above, the yarn 20 does not come into contact with the deflection guide member 60 during the normal winding operation, so that the yarn quality can be prevented from deteriorating.

  Further, as shown in FIG. 1 and the like, the deflection guide member 60 is not connected to other members. More specifically, the deflection guide member 60 is arranged such that a gap is provided between the yarn inlet 61 of the deflection guide member 60 and the upper thread drawing portion 48. Similarly, the deflection guide member 60 is arranged so that there is a gap between the yarn outlet 62 of the deflection guide member 60 and the upper yarn catching portion 13. As described above, since the gap is formed between the deflection guide member 60 and the other members, the yarn 20 taken out from the deflection guide member 60 travels without contacting the deflection guide member 60 at all. Can do. In this respect as well, it is possible to prevent the yarn 20 from coming into contact with the deflection guide member 60 and receiving damage during normal winding, so that the yarn quality can be prevented from deteriorating.

  In addition, since the yarn 20 is blown off and guided as described above, a member that is largely driven like the yarn guide pipes 91 and 92 in FIG. 17 is not necessary. Therefore, the configuration of the automatic winder can be simplified, and the degree of freedom in layout of each configuration is increased. Further, in the present embodiment, the path through which the upper thread 20b is guided by the deflection guide member 60 is curved, so that the upper thread catching section 13 is disposed at the tip of the direction in which the thread is blown from the upper thread drawing section 48. Even if not, the upper thread 20 b can be guided to the upper thread catching section 13. Thus, by devising the shape of the deflection guide member 60, the positions of the upper thread drawing portion 48 and the upper thread catching portion 13 can be freely laid out.

  Next, an operation when a yarn defect is detected by the clearer 17 will be described.

  When a yarn defect is detected by the clearer 17 during normal winding as shown in FIG. 1, the control unit 25 operates the cutter 16 to cut the yarn 20. At this time, the yarn end upstream of the cutter 16 is sucked and captured by the yarn trap 15 disposed immediately upstream of the cutter 16. On the other hand, the yarn end downstream of the cutter 16 is wound around a yarn accumulating roller 32 that rotates forward. As a result, the yarn portion including the yarn defect is wound on the proximal end side of the yarn accumulating roller 32.

  At this time, the lower thread 20a and the upper thread 20b are in the same state as in FIG. However, when the yarn 20 is cut by the cutter 16, the cut yarn end is sucked and captured by the yarn trap 15 as it is, so that the operation of blowing the lower yarn 20 a upward by the lower yarn blowing section 11 is not necessary. This is different from the replacement operation of the yarn feeding bobbin 21. Thus, according to the configuration of the present embodiment, when the yarn is split between the yarn supplying bobbin 21 and the package 30, the yarn end on the yarn supplying bobbin 21 side is located downstream of the yarn joining device 14. Is captured by the yarn trap 15.

  On the other hand, in the conventional automatic winder, as shown in FIG. 18 and the like, when the yarn 20 is cut by the cutter 16, the yarn end of the lower yarn is sucked and captured upstream of the tension applying device 12. Then, as shown in FIG. 20, the lower yarn guide pipe 92 that sucks and captures the lower yarn is rotated upward to guide the yarn end of the lower yarn to the downstream side of the yarn joining device. As described above, as a result of taking a long time to rotate the lower thread guide pipe 92 greatly, in the conventional automatic winder, the entire time of the yarn joining operation is also increased. In this respect, by configuring the lower yarn to be captured on the downstream side of the yarn joining device 14 as in the present embodiment, the yarn end of the lower yarn is moved to the downstream side of the yarn joining device 14 as in a conventional automatic winder. The operation of guiding is unnecessary in the first place. Therefore, it is possible to shorten the time for the entire yarn splicing operation, and the production efficiency of the package 30 can be improved.

  In the present embodiment, the lower thread sucked into the yarn trap 15 when the thread 20 is cut by the cutter 16 is only a short portion between the yarn trap 15 and the cutter 16. On the other hand, in the conventional automatic winder shown in FIG. 18 and the like, the lower yarn sucked into the lower yarn catching pipe 92 when the cutter 16 cuts the yarn is a portion from the upstream side of the tension applying device 12 to the cutter 16. It was. As described above, the portion sucked by the lower thread catching pipe 92 has been discarded when the piecing is completed. In this respect, also in this embodiment, the lower thread sucked into the yarn trap 15 is discarded when the piecing is completed. As described above, the lower thread sucked into the yarn trap 15 is only a very short portion. Thus, the amount of yarn 20 that is discarded can be minimized. Therefore, according to the configuration of the present embodiment, it is possible to minimize the waste yarn generated in the yarn joining operation when the yarn defect is detected.

  Subsequently, the control unit 25 drives the yarn trap 15 in a direction away from the yarn travel path, and introduces the lower yarn 20a sucked and captured by the yarn trap 15 into the yarn joining device 14 (see FIG. 9). The same situation). In this respect, for example, in the case of the configuration of Patent Document 1, in order to avoid interference between the relay pipe (lower thread guide pipe) and the suction mouth (upper thread guide pipe), the lower thread is sucked and captured on the downstream side of the yarn joining device. It was necessary to rotate the relay pipe downward once. As described above, since it is necessary to once rotate the relay pipe downward, in the configuration of Patent Document 1, the entire time of the yarn splicing operation becomes long. On the other hand, in this embodiment, since the rotating yarn guide pipe is not provided, the problem that the yarn guide pipes interfere with each other does not occur in the first place. Therefore, in the present embodiment, as described above, after the lower thread 20a is sucked and captured by the yarn trap 15, the lower thread 20a can be immediately introduced into the yarn joining device 14. As a result, the time required for the yarn joining operation can be shortened.

  Further, before and after the yarn trap 15 is driven in the direction of separating the yarn trap 15 from the yarn travel path, the control unit 25 opens the electromagnetic valve 51 while rotating the yarn storage roller 32 in the reverse direction, and further opens the lid 13a. Leave open. Thereby, the upper thread 20b is introduced into the yarn joining device 14 (the same state as FIG. 13). In this state, by continuing the reverse rotation of the yarn accumulating roller 32 for a predetermined time, the yarn defect portion wound on the yarn accumulating roller 32 is drawn out and sucked by the upper yarn catching section 13. Thereby, the yarn defect portion detected by the clearer 17 can be removed. Subsequently, the control unit 25 operates the yarn joining device 14 to perform yarn joining.

  As described above, even in the yarn joining operation at the time of yarn defect detection, the upper yarn 20b is guided by being blown off by the blown air, so that the upper yarn guide member provided in the conventional winder unit (FIG. 17). Compared to the upper thread guide pipe 91), the upper thread 20b can be guided quickly with a simple configuration. Further, in the yarn joining operation when the yarn defect is detected, the lower yarn 20a can be guided to the yarn joining device 14 only by driving the yarn trap 15 while being sucked and captured by the yarn trap 15. Thereby, the lower thread 20a can be guided easily and quickly at the time of detecting a yarn defect. As described above, even when the yarn defect is detected, the time required for the yarn joining operation can be shortened, so that the generation efficiency of the package 30 can be improved.

  As described above, the automatic winder of the present embodiment includes the bobbin support portion 7, the winding portion 8, the yarn joining device 14, the yarn guide portion, the yarn trap 15, the yarn trap driving portion 47, Is provided. The bobbin support part 7 supports the yarn feeding bobbin 21. The winding unit 8 winds the yarn from the yarn supplying bobbin 21 around the package 30. The yarn joining device 14 is provided between the bobbin support portion 7 and the winding portion 8, and the yarn on the yarn feeding bobbin 21 side and the package 30 side in a state where the yarn connected from the yarn feeding bobbin 21 to the package 30 is divided. The yarn is spliced together. The yarn guide unit guides the yarn on the package 30 side to the yarn joining device 14 in a state where the yarn is divided. The yarn trap 15 is disposed so as to face the yarn traveling path between the winding unit 8 and the yarn joining device 14, and captures the yarn on the yarn feeding bobbin 21 side in a state where the yarn is divided. The yarn trap driving unit 47 moves the yarn trap in a direction in which the captured yarn is introduced into the yarn joining device 14 while maintaining the state of straddling the yarn joining device 14.

  In this way, the yarn trap 15 that captures the yarn on the yarn feeding bobbin 21 side in a state where the yarn is divided is disposed at a position facing the yarn traveling path between the winding unit 8 and the yarn joining device 14. Therefore, when performing yarn joining, the yarn can be captured at a position where the yarn is introduced into the yarn joining device 14. Thereby, the time cycle of yarn splicing can be shortened. Further, since no complicated drive member is required, the entire automatic winder can be configured simply.

  The automatic winder of this embodiment includes a clearer 17 and a cutter 16. The clearer 17 is disposed between the bobbin support portion 7 and the winding portion 8 and detects a yarn defect. The cutter 16 puts the yarn between the yarn feeding bobbin 21 and the package 30 into a divided state based on the division signal when the clearer 17 detects the yarn defect.

  In this configuration, when a yarn defect is detected, the yarn is divided by the cutter 16, and the divided yarn on the yarn feeding bobbin 21 side is captured by the yarn trap 15. Thereby, the time cycle of yarn joining can be shortened. In addition, since the yarn is reliably cut (cut) at a predetermined position by the cutter 16, the yarn trap 15 can reliably catch the yarn. Further, since the yarn is split at a predetermined position, the waste yarn generated when the yarn on the yarn supplying bobbin 21 side is spliced can be made a constant amount, so that waste yarn management becomes easy.

  Further, in the automatic winder of the present embodiment, the yarn trap 15 is an air suction unit that captures a yarn by an air suction force.

  Thereby, the divided yarn can be sucked and captured by the suction force of air. In addition, the fluff generated from the yarn can be recovered by applying a suction force during the winding operation.

  In the automatic winder of the present embodiment, a yarn accumulating device 18 is provided between the winding unit 8 and the yarn joining device 14.

  As a result, the winding of the yarn around the package 30 is not interrupted during yarn splicing, and the winding state of the package 30 is not disturbed. Furthermore, since this configuration can shorten the splicing time cycle, it is possible to prevent the yarn stored in the yarn storage device 18 from being lost. Therefore, it is possible to remove the yarn defect or replace the bobbin without interrupting the winding of the yarn around the package 30.

  Further, in the automatic winder of the present embodiment, the upper yarn guide portion sucks the yarn on the yarn storage device 18 and blows it to the vicinity of the yarn joining device 14 and the vicinity of the yarn joining device 14. And an upper thread catching section 13 that catches the upper thread 20b blown off by the upper thread drawing section 48 and introduces it into the yarn joining device 14.

  As described above, the configuration in which the upper thread 20b is blown off and guided to the yarn joining device 14 simplifies the configuration for guiding the upper thread 20b. As a result, the degree of freedom in layout of each configuration is improved. Further, since the guide to the yarn joining device 14 is completed simply by blowing off the upper thread 20b, the time required for the guiding operation of the upper thread 20b can be shortened and the production efficiency of the package 30 can be improved.

  Further, in the automatic winder of the present embodiment, the upper thread guide part includes a deflection guide member 60 that guides the upper thread 20b blown off by the upper thread drawing part 48 to the upper thread catching part 13.

  In this way, the upper yarn 20b blown off by the upper yarn drawing portion 48 is guided to the upper yarn catching portion 13 by the deflection guide member 60, whereby the upper yarn drawing portion 48 and the upper yarn catching portion 13 are freely arranged. And the degree of freedom of layout can be improved.

  In the automatic winder of the present embodiment, the deflection guide member 60 is a cylindrical member, and a slit 63 is formed along the longitudinal direction of the cylinder. Further, the deflection guide member 60 is disposed at a position deviated from the yarn traveling path along which the yarn travels when winding the yarn.

  Thus, by making the deflection guide member 60 cylindrical, the upper thread 20b can be reliably guided to the upper thread catcher 13 so as to pass through the inside of the cylinder. Further, by providing the cylindrical deflection guide member 60 with the slit 63, the upper thread 20 b that has been guided to the upper thread catcher 13 can be taken out from the slit 63. Further, since the deflection guide member 60 is not connected to other members, the yarn 20 taken out from the slit 63 does not come into contact with the deflection guide member 60. With the above configuration, since the yarn 20 can be run outside the deflection guide member 60 during normal winding, it is possible to prevent the yarn 20 from coming into contact with the deflection guide member 60 and reducing the quality.

  In the automatic winder according to the present embodiment, the yarn is wound around a predetermined portion of the yarn storage device 18 (a boundary portion between the cylindrical portion 32c and the proximal end side tapered portion 32a).

  When the yarn is wound around the predetermined position as described above, the yarn end wound around the yarn accumulating device 18 is also present at the predetermined position when the yarn is divided. Therefore, if suction is performed from this predetermined position, the yarn end can be captured for piecing. Therefore, a large suction port such as a suction mouse for sucking and capturing the yarn end from the package 30 is not necessary. Thereby, the shape of the upper thread drawing portion 48 is simplified, and the degree of freedom in layout is improved. Furthermore, since the suction port of the upper thread drawing portion 48 can be made smaller, the amount of air consumed is also reduced.

  Next, a modification of the first embodiment will be described. In the following description of the modified examples, the same or similar configurations as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted. In this modification, as shown in FIG. 14, the yarn accumulating device 18 is omitted.

  In this modification, instead of the upper thread guide part (upper thread draw-out part 48, deflection guide member 60, and upper thread capture part 13) of the first embodiment, the upper thread guide pipe 91 is connected to the upper thread guide part (yarn). As a guide). In this modification, the upper thread 20 b on the package 30 side is guided to the yarn joining device 14 by the upper thread guide pipe 91. The configuration of the upper thread guide pipe 91 is similar to that of the upper thread guide pipe 91 provided in the conventional automatic winder shown in FIG.

  In FIG. 14, when a yarn defect is detected by the clearer 17 and the yarn 20 is cut by the cutter 16, the lower yarn 20a is sucked and held by the yarn trap 15, and the upper yarn guide pipe 91 is rotated upward. A state in which the upper thread 20b is sucked and captured is shown. From this state, when the upper thread guide pipe 91 is to be rotated downward in order to guide the upper thread 20b to the yarn joining device 14, the yarn trap 15 and the feed trap 15 are placed on the locus of the upper thread guide pipe 91. A lower thread 20a is present between the thread bobbin 21 and the thread bobbin 21. Accordingly, if the upper thread guide pipe 91 of the conventional configuration is rotated downward as it is, the upper thread guide pipe 91 may be caught by the lower thread 20a, and the upper thread 20b may not be introduced into the yarn joining device 14. .

  Therefore, in the present embodiment, the upper yarn guide pipe 91 is formed with a yarn retracting portion for temporarily retracting the lower yarn 20a connected from the yarn supplying bobbin 21 to the yarn trap 15. More specifically, the advancing surface 91c when the upper thread guide pipe 91 turns downward is formed as an inclined portion. Accordingly, when the upper thread guide pipe 91 is rotated downward, the lower thread 20a can be pushed away by the advancing surface 91c configured as an inclined portion, so that it passes through the upper thread guide pipe 91 without being caught by the lower thread 20a. Can be made. Thereby, the upper thread 20b can be introduced to the yarn joining device 14. However, a mechanism for retracting the lower thread 20 a when the upper thread guide pipe 91 is rotated downward may be provided separately from the upper thread guide pipe 91.

  As described above, the upper thread 20b can be guided to the yarn joining device 14 by the conventional thread guide member (upper thread guide pipe 91). Even in this configuration, when the yarn 20 is cut by the cutter 16, the lower yarn 20a is sucked and captured by the yarn trap 15 and introduced into the yarn joining device 14 as it is, so that both the upper yarn 20b and the lower yarn 20a are used. Compared with the conventional configuration (configuration of FIG. 17) in which the yarn is guided by the yarn guide pipes 91 and 92, it is possible to reduce the time required for the yarn joining with a simple configuration.

  As described above, the automatic winder according to the present modification is configured as follows. That is, the upper yarn guide pipe 91 as the yarn guide portion is rotated from the package 30 side to the yarn feeding bobbin 21 side beyond the yarn joining device 14 in a state in which the yarn on the package 30 side is sucked and captured. It is configured to guide the yarn on the package 30 side to the yarn joining device 14. A yarn retracting portion for retracting the yarn connected from the yarn supplying bobbin to the yarn catching portion from the trajectory in which the upper yarn guide pipe 91 rotates so as to guide the upper yarn 20b to the yarn joining device 14 includes the yarn guide. It is formed in the part.

  Thus, by retracting the yarn between the yarn feeding bobbin 21 and the yarn trap 15, the yarn can be guided to the yarn joining device 14 by the rotating upper yarn guide pipe 91.

  In the automatic winder according to the modification, the yarn retracting portion is an inclined portion formed on a traveling surface when the yarn guiding portion rotates so as to guide the yarn to the yarn joining device.

  With this configuration, the lower thread 20a between the yarn feeding bobbin 21 and the yarn trap 15 can be pushed away by the inclined portion and retracted, and the upper thread guide pipe 91 can be rotated. As a result, the upper thread guide pipe 91 is not caught by the lower thread 20a, and therefore the upper thread 20b can be guided to the yarn joining device 14 by the upper thread guide pipe 91.

  Next, another modification of the above embodiment will be described. This modification has a configuration in which a clamp portion is provided instead of the yarn trap 15 in the winder unit 100 shown in FIG.

  This clamp part is comprised so that a thread | yarn can be hold | gripped. The clamp portion is disposed so as not to contact the yarn path during normal winding, and grips the yarn between the clearer 17 and the yarn joining device 14 in accordance with a control signal from the control portion 25. It is configured. Moreover, this clamp part is comprised so that it can be moved to the direction away from a yarn path by a drive part similarly to the yarn trap 15 of the said embodiment.

  With this configuration, when a yarn defect is detected by the clearer 17, the control unit 25 cuts the yarn with the cutter 16, and simultaneously transmits a control signal to the clamp unit to grip the yarn end of the cut lower yarn. In this state, the control unit 25 can introduce the yarn end gripped by the clamp unit into the yarn joining device 14 as it is by retracting the clamp unit by the drive unit.

  As described above, in the automatic winder according to this modification, the yarn catching portion is a clamp portion that catches the yarn by gripping the yarn.

  In this case, since the yarn is captured by the clamp portion simultaneously with the yarn division by the cutter, the yarn can be reliably cut and captured.

  Next, still another modification of the above embodiment will be described. This modification has a configuration in which a clamp unit is provided in place of the yarn trap 15 and the cutter 16 is omitted in the winder unit 100 shown in FIG.

  With this configuration, when a yarn defect is detected by the clearer 17, the control unit 25 transmits a control signal to the clamp unit to grip the traveling yarn. Thereby, a thread | yarn is torn between a clamp part and the winding-up part 8. FIG. In this state, the control unit 25 can introduce the yarn end gripped by the clamp unit into the yarn joining device 14 as it is by retracting the clamp unit by the drive unit. As described above, since the yarn can be divided by the clamp portion, it can be said that the clamp portion of the present modification also operates as a yarn division portion.

  Thus, the clamped yarn serves as the yarn dividing portion and the yarn catching portion, so that the divided yarn can be reliably caught. That is, in the case of a configuration in which the yarn is cut by the cutter, the yarn gripping may fail if the timing of the yarn cutting by the cutter does not match the timing of the yarn gripping by the clamp portion. In this regard, in the case of the configuration in which the yarn is divided by gripping with the clamp portion and tearing the yarn as described above, the yarn is already gripped at the time when the yarn is split, so that the gripping of the yarn fails. There is nothing. Therefore, it is possible to reliably introduce the yarn that has been broken when the yarn defect is detected into the yarn joining device 14.

  As described above, in the automatic winder of this modification, the yarn catching portion is a clamp portion provided between the yarn joining device and the winding portion, and the yarn that is running is the clamp portion. It also operates as a thread dividing part by gripping the thread.

  In this case, the yarn catching unit performs the yarn splitting and catching simultaneously by holding the yarn between the yarn supplying bobbin and the winding unit with the clamp unit. Thus, since the yarn is divided by the clamp portion, the yarn end cannot be caught.

  Next, a second embodiment of the present invention will be described. In the following description of the modified examples, the same or similar configurations as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  As shown in FIG. 15, the winder unit 100 included in the automatic winder according to this embodiment includes a yarn storage device of a type different from that of the first embodiment. Hereinafter, the yarn accumulating device 64 will be described with reference to FIG.

  As shown in FIG. 16, the yarn storage device 64 includes a rotary shaft casing 70, a yarn storage portion 71, and a yarn guide portion 72. Further, the rotary shaft casing 70 includes a cylindrical tube portion 78 that is open at the top, and a flange portion 79 that is formed at an open end of the tube portion 78. Further, an upper thread drawing portion 48 is disposed immediately upstream of the yarn accumulating device 64.

  The yarn storage portion 71 is disposed above the collar portion 79. The yarn storage portion 71 includes a support plate 81 formed in a disc shape, a plurality of rod members 82 protruding upward from the support plate 81, and a disc to which tip portions of the plurality of rod members 82 are connected. And a mounting plate 83 having a shape. Further, the yarn storage portion 71 is disposed so as to form a gap between the support plate 81 and the collar portion 79, and is configured so that a winding cylinder 75 described later can rotate inside the gap. ing.

  The plurality of rod members 82 are arranged at equal intervals on a circumference orthogonal to the vertical direction, and the yarn storage portion 71 is configured to form a substantially cylindrical shape by the rod members 82. The yarn 20 is stored in the yarn storage portion 71 by winding the yarn 20 around the outer peripheral portion of the substantially cylindrical yarn storage portion 71 composed of the plurality of rod members 82.

  The yarn guide portion 72 is disposed inside the rotary shaft casing 70. In the rotary shaft casing 70, an introduction hole 80 is formed in the lower part of the cylindrical part 78 (the end opposite to the yarn storage part 71). The guide tube 34 of the upper thread drawing portion 48 is connected to the introduction hole 80. The yarn 20 drawn out from the yarn supplying bobbin 21 is guided to the introduction hole 80 by the guide cylinder 34, passes through the introduction hole 80, and is guided to the yarn guide portion 72.

  A rotating shaft 73 that is attached to the rotating shaft casing 70 and the yarn storage portion 71 so as to be rotatable relative to the rotating shaft casing 70 is disposed inside the cylindrical portion 78. A servo motor (yarn storage drive unit) 55 is incorporated between the rotary shaft 73 and the cylindrical portion 78, and the rotary shaft 73 can be rotated forward and backward. A shaft hole-shaped yarn passage 74 is formed at the center of the rotating shaft 73.

  A winding cylinder (winding means) 75 formed in a cylindrical shape is fixed to one end of the rotating shaft 73 (the end opposite to the introduction hole 80). The winding cylinder 75 extends in the radial direction so as to pass through the gap between the rotating shaft casing 70 (the flange 79) and the support plate 81 while being slightly inclined upward, and a part of the tip portion thereof is rotated. It is configured to protrude slightly from the shaft casing 70. The winding cylinder 75 is configured to rotate integrally with the rotating shaft 73. Further, the inside of the winding cylinder 75 is connected to the yarn passage 74.

  In the above configuration, the yarn 20 introduced into the rotary shaft casing 70 from the introduction hole 80 of the yarn guide portion 72 passes through the inside of the yarn passage 74 and the winding cylinder 75 and is discharged from the tip of the winding cylinder 75. Thus, the yarn is guided to the side surface portion of the yarn storage portion 71. Accordingly, when the servo motor 55 is driven in the forward direction, the winding cylinder 75 rotates together with the rotary shaft 73, whereby the yarn 20 is wound around the side surface portion.

  Further, each of the rod members 82 arranged in the yarn accumulating portion 71 is arranged so as to incline toward the inner side of the yarn accumulating portion 71 as it approaches the end portion on the mounting plate 83 side from the end portion on the support plate 81 side. Has been. By the inclination of the rod member 82, the yarn wound around the yarn accumulating portion 71 moves so as to slide upward. Accordingly, when the yarn 20 is continuously wound by the winding cylinder 75 described later, the yarn wound around the inclined portion moves upward, so that the side portion constituted by the rod member 82 has The yarn 20 is stored in a spirally aligned state.

  Similar to the first embodiment, the upper thread drawing portion 48 includes a guide tube 34 and an air ejection nozzle 49. As shown in FIG. 16, the air ejection nozzle 49 is connected to an electromagnetic valve 51 controlled by the control unit 25, and this electromagnetic valve 51 is connected to a compressed air source 46. The air ejection port of the air ejection nozzle 49 is formed so as to eject air toward the upstream side in the yarn traveling direction.

  In the second embodiment, when the yarn is pulled out from the yarn storage device 64, the control unit 25 stops the servo motor 55 and opens the electromagnetic valve 51 to generate an air flow in the guide tube 34. Thereby, the yarn can be pulled out from the yarn storage device 64.

  As shown in FIG. 16, also in the present embodiment, the yarn inlet 61 of the deflection guide member 60 is disposed at the tip in the direction in which air is ejected from the upper yarn drawing portion 48. With the above configuration, also in the second embodiment, the upper thread on the yarn storage device 64 side can be guided to the yarn joining device 14.

  Next, a modification of the second embodiment will be described. That is, the yarn storage device 64 of the second embodiment is provided with the rod member 82 tilted in order to wind the yarn in the yarn storage portion 71 in an aligned state. However, with this configuration, there is a problem that the yarn wound around the rod member 82 is loosened as it moves upward. Therefore, instead of the configuration in which the rod member is inclined, a configuration in which a member that actively feeds the yarn upwards may be provided. For example, a configuration in which the yarn in the yarn accumulating portion is positively sent upward by a roller-shaped member can be employed.

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

  In the first embodiment, when the yarn is pulled out from the yarn accumulating device 18, the yarn accumulating roller 32 is reversely rotated by the roller drive motor 33, but the upper yarn pulling portion 48 has a force to pull out the upper yarn 20 b. If it is strong enough, the roller drive motor 33 may be neutral.

  In the description of the above-described embodiment, the lower thread 20a is guided first and then the upper thread 20b is guided after that because of the explanation described in the drawings. However, the present invention is not limited to this, and the upper thread 20b is guided first. You may go to In the case of the conventional configuration shown in FIG. 17, if the lower thread 20a and the upper thread 20b are simultaneously guided, there is a problem that the two thread guide pipes 91 and 92 interfere with each other. The upper thread and lower thread could not be guided simultaneously. In this regard, if configured as in the above-described embodiment or its modification, there is no problem that the yarn guide pipes interfere with each other because there is at most one yarn guide pipe. Therefore, in the automatic winder shown in the above embodiment or its modification, the lower thread 20a and the upper thread 20b can be guided at the same time.

  Although the yarn trap 15 can be driven in a direction approaching / separating from the yarn traveling path, this configuration is omitted, and the position separated from the yarn traveling path (the lower thread 20a can be introduced into the yarn joining device 14). (Position) may be used. However, with this configuration, the yarn trap 15 cannot be brought close to the yarn travel path during normal winding, so that it is difficult to force a suction flow to the yarn 20 and adhere to the yarn 20. It may not be possible to remove the fluff that has been removed. Further, in such a configuration, there is a possibility that the yarn end of the lower yarn cannot be captured when the yarn 20 is cut by detecting the yarn defect. Therefore, it is preferable that the yarn trap 15 can be driven in a direction approaching / separating from the yarn traveling path as in the above embodiment.

  The shape of the deflection guide member 60 is not limited to that of the above-described embodiment, and any shape can be used as long as it can properly guide the air blown from the upper thread drawing portion 48 to the upper thread catching portion 13. . For example, if it is possible to dispose the upper thread catcher 13 in the direction in which air is ejected from the upper thread draw-out part 48, the upper thread 20b can be moved to the upper thread catcher 13 without the deflection guide member 60. In this case, the deflection guide member 60 can be omitted.

  The control unit 25 is not limited to the configuration provided for each winder unit 2 and may be configured to control a plurality of winder units by one control unit. In the above description, a single control unit 25 is configured to control a plurality of members collectively. However, the present invention is not limited to this. For example, a control unit is provided for each member to be controlled. Also good.

  Although the control unit 25 is configured by hardware and software, a part or all of the functions may be configured by dedicated hardware.

  Although the winder unit 2 of the said embodiment is the structure which supplies the yarn supply bobbin 21 with the magazine type bobbin supply apparatus 26, it is not limited to this structure. For example, it is possible to change to a configuration in which the yarn feeding bobbin 21 is supplied to the winder unit 2 by conveying a tray on which the yarn feeding bobbin 21 is set along an appropriate path.

  In the above embodiment, the winding unit 8 is configured to traverse the yarn 20 by the traverse drum 24, but may be configured to traverse the yarn 20 by, for example, an arm type traverse mechanism.

  The configuration of the present invention can be applied not only to an automatic winder but also to other types of yarn winding devices including a yarn joining device.

2 Winder unit 7 Bobbin support part 8 Winding part 11 Lower thread blow-up part 12 Upper thread catching part 14 Yarn splicing device 15 Yarn trap (yarn catching part)
16 Cutter 17 Clearer (Thread defect detection device)
DESCRIPTION OF SYMBOLS 18 Yarn storage apparatus 25 Control part 34 Guide cylinder 49 Air ejection nozzle 48 Upper thread drawing part 60 Deflection guide member

Claims (13)

A bobbin support for supporting the yarn feeding bobbin;
A winding unit for winding the yarn from the yarn feeding bobbin into a package;
Yarn provided between the bobbin support portion and the winding portion and for splicing the yarn on the yarn feeding bobbin side and the yarn on the package side in a state where the yarn connecting from the yarn feeding bobbin to the package is divided A relay device;
In a state where the yarn is divided, a yarn guide portion for guiding the yarn on the package side to the yarn joining device;
A yarn catcher that is arranged to face a yarn travel path between the winding unit and the yarn joining device, and catches the yarn on the yarn feeding bobbin side in a state where the yarn is divided;
A drive unit for moving the yarn catching unit in a direction to be introduced into the yarn joining device while maintaining the state where the captured yarn straddles the yarn joining device;
A yarn winding device comprising: The yarn winding device according to claim 1,
A yarn defect detection device that is disposed between the bobbin support portion and the winding portion and detects a yarn defect;
Based on a split signal when the yarn defect detection device detects a yarn defect, a yarn splitting unit that splits the yarn between the yarn feeding bobbin and the package;
A yarn winding device comprising: The yarn winding device according to claim 2,
The yarn winding device, wherein the yarn dividing unit is a cutter disposed between the yarn catching unit and the yarn defect detecting device. The yarn winding device according to claim 3,
The yarn winding device, wherein the yarn catching portion is an air suction portion that catches yarn by an air suction force. The yarn winding device according to claim 3,
The yarn winding device, wherein the yarn catching portion is a clamp portion that catches a yarn by gripping the yarn. The yarn winding device according to claim 2,
The yarn catching portion is a clamp portion provided between the yarn joining device and the winding portion, and the clamp portion also operates as a yarn dividing portion by gripping a running yarn. Yarn winding device. The yarn winding device according to any one of claims 1 to 6,
The yarn guide unit guides the package-side yarn to the yarn joining device by moving from the package side to the yarn feeding bobbin side beyond the yarn joining device while sucking and capturing the package-side yarn. Is configured as
A yarn retracting portion for retracting the yarn connected from the yarn supplying bobbin to the yarn catching portion from the locus on which the yarn guiding portion moves so as to guide the yarn to the yarn joining device is formed in the yarn guiding portion. A yarn winding device. The yarn winding device according to claim 7,
The yarn winding device, wherein the yarn retracting portion is an inclined portion formed on a traveling surface when the yarn guiding portion moves so as to guide the yarn to the yarn joining device. The yarn winding device according to any one of claims 1 to 6,
A yarn winding device, wherein a yarn storage device is provided between the winding unit and the yarn joining device. The yarn winding device according to claim 9,
The yarn guide portion is
A yarn suction / injection portion for sucking the yarn on the winding portion side and blowing it to the vicinity of the yarn splicing device;
A second yarn catching portion that is disposed in the vicinity of the yarn joining device and catches the yarn blown off by the yarn suction jetting portion and introduces it into the yarn joining device;
A yarn winding device comprising: The yarn winding device according to claim 10,
The yarn winding device, wherein the yarn guide portion includes a deflection guide member that guides the yarn blown off by the yarn suction and ejection portion to the second yarn catching portion. The yarn winding device according to claim 11,
The deflection guide member is a cylindrical member, and a slit is formed along the longitudinal direction of the cylinder,
The yarn winding device, wherein the deflection guide member is disposed at a position deviating from a yarn traveling path along which the yarn travels during yarn winding. The yarn winding device according to claim 12,
The yarn winding device, wherein the yarn is wound around a predetermined portion of the yarn storage device.

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