JP2009155101A - Winding unit and automatic winder having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding unit of an automatic winder capable of reliably guiding a yarn end on a package side to a yarn splicing part and enhancing the production efficiency of the package. <P>SOLUTION: The winder unit 10 has an upper yarn guide pipe 26 which captures an upper yarn 90 unwound from a package 30 turned in the reverse direction by a drum driving motor by a suction mouth 34, and guides it to a splicer device. Further, the winder unit 10 comprises a stepping motor 41 for turning the upper yarn guide pipe 26, and a control unit. The control unit controls the stepping motor 41 so that the suction mouth 34 capturing the yarn is moved at the speed V2 equal to or lower than the speed V1 at which the yarn is unwound from a yarn layer by the reverse turn of the package 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an automatic winder, and more particularly, to a configuration for capturing a yarn end of a package and guiding it to a yarn joining portion when performing a yarn joining operation in a winding unit of the automatic winder.

  In the winder unit of an automatic winder, conventionally, when yarn breakage or yarn cutting by a clearer occurs, the yarn splicer joins the upper yarn drawn from the package and the lower yarn drawn from the yarn feeding bobbin. A device is provided. As a configuration for guiding the upper thread to the yarn joining device, the winding unit has a capturing means, and the upper thread is captured by sucking the thread end from the package with a mouse portion formed at the end of the capturing means. In addition, it is known that the upper thread is guided to the yarn joining device by rotating the catching means while holding the thread.

An automatic winder winding unit having such a capturing means is disclosed in Patent Document 1, for example. The winding unit of Patent Document 1 includes a twisting device and a suction nozzle. A needle comb is disposed in the opening of the suction nozzle. In the winding unit of this patent document 1, when the yarn cutting device is activated by detecting the yarn unevenness or the yarn unevenness, and the rewinding is interrupted, the yarn is wound on the surface of the traverse winding package. The suction nozzle pivots to receive the yarn and its opening is positioned in the region of the surface of the trawl package. A sensor device is incorporated in the suction nozzle. After the sensor device detects the yarn start end sucked into the suction nozzle, the suction nozzle turns and returns to a lower starting position. Thereby, the upper yarn is introduced into the twisting device.
JP-A-10-167777

  In this type of winding unit, if the suction nozzle is swung in a state where the yarn end on the twill winding package side is not sufficiently sucked by the suction nozzle, the yarn may come off from the suction nozzle (yarn removal). This will cause the splicing failure. In this regard, the configuration of Patent Document 1 is considered to prevent the above-described yarn detachment because the suction nozzle is rotated after the sensor device detects that the yarn has been sufficiently sucked into the suction nozzle.

  However, the yarn end sucked into the suction nozzle in the configuration of Patent Document 1 often exhibits unstable behavior such as being swung or swept by a suction flow. Therefore, it is difficult to stably detect the yarn end by the sensor device, and in order to detect the existence of the yarn end with certainty, it is necessary to suck more yarn than necessary. Since the yarn excessively sucked into the suction nozzle is cut and discarded after the yarn splicing operation, the configuration of Patent Document 1 is wasteful of yarn, and there is room for improvement from the viewpoint of cost reduction and the like. It was left.

  In order to quickly resume the winding of the yarn, it is desirable that the suction nozzle swirls at a high speed after the yarn end is captured, and guides the yarn to the piecing device. When the nozzle is rotated at a high speed, the trapped thread may be rubbed against the nozzle opening (particularly, the needle comb) to damage the thread.

  The present invention has been made in view of the above circumstances, and its purpose is to reliably guide the yarn end on the package side to the yarn joining portion to increase the production efficiency of the package and to prevent deterioration of the yarn quality. It is to provide an automatic winder winding unit that can be used.

Means and effects for solving the problems

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

  According to the viewpoint of this invention, the winding unit of the automatic winder comprised as follows is provided. That is, the winding unit includes a capturing unit that captures the yarn unwound from the package reversely rotated by the driving source and guides the yarn to the yarn joining portion. In addition, the winding unit includes a capturing means driving source for rotating the capturing means, and a control unit. The control unit is configured to be controllable so that the mouse unit that has captured the yarn moves at a speed equal to or less than a speed at which the yarn is unwound from the yarn layer by reverse rotation of the package.

  As a result, the mouse part moves at a speed equal to or less than the speed at which the yarn is unwound from the package. Therefore, the yarn is prevented from coming off from the catching means (yarn coming off) when the catching means is rotated downward after catching the yarn. Can be reliably guided to the yarn joining portion. Further, since the yarn can be prevented from coming off even if the length of the yarn sucked by the catching means is short, the length of the yarn fed out by the reverse rotation of the package can be shortened, so that the waste of the yarn can be prevented and the operation time can be shortened. Further, since the yarn is not pulled when the catching means is rotated, it is possible to prevent the yarn from being damaged by being rubbed or caught on the catching means. Further, since the capturing means driving source is independent of the package driving source, the reverse rotation of the package and the downward rotation of the capturing means are easily linked and controlled so as to satisfy the above-described speed relationship. be able to.

  In the automatic winder winding unit, it is preferable that the control unit controls the yarn unwinding speed by the reverse rotation of the package and the moving speed of the mouse part to be equal.

  Accordingly, unwinding of excess yarn can be suppressed and waste of the yarn can be prevented, and the yarn captured by the capturing means can be quickly guided to the yarn joining portion.

  In the automatic winder winding unit, the capture means drive source is preferably a stepping motor.

  Thus, the rotation of the capturing means can be accurately controlled by the stepping motor that can adjust the rotation angle.

  In the winding unit of the automatic winder, it is preferable that the package is reversely rotated by a predetermined number of turns regardless of the diameter of the yarn layer in a state where the mouse portion is brought close to the outer peripheral surface of the package.

  As a result, an opportunity for the yarn end to be captured by the mouse portion can be ensured satisfactorily regardless of the diameter of the yarn layer, and the yarn can be stably captured by the mouse portion. Further, since the package drive source and the catching means drive source are independent, it is easy to flexibly change the control of the package drive source in accordance with the diameter of the yarn layer.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a winder unit 10 provided in an automatic winder according to an embodiment of the present invention. FIG. 2 is a front view showing a schematic configuration of the winder unit 10.

  The winder unit 10 shown in FIGS. 1 and 2 is a package 30 having a predetermined length and a predetermined shape by winding a yarn 20 unwound from a yarn supplying bobbin 21 around a winding bobbin 22 while traversing. The automatic winder according to the present embodiment includes a plurality of winder units 10 arranged side by side and a machine control device (not shown) arranged at one end in the arranged direction.

  Each winder unit 10 includes a unit frame 11 (FIG. 1) provided on the left and right sides in a front view, and a winding unit body 16 provided on the side of the unit frame 11.

  The winding unit main body 16 includes a cradle 23 configured to hold the winding bobbin 22, a winding drum (traverse drum) 24 for traversing the yarn 20 and rotating the winding bobbin 22, It has. The cradle 23 is configured to be swingable in a direction in which the cradle 23 approaches or separates from the take-up drum 24, whereby the package 30 is brought into contact with or separated from the take-up drum 24. As shown in FIG. 2, a spiral traverse groove 27 is formed on the outer peripheral surface of the winding drum 24, and the yarn 20 is traversed by the traverse groove 27.

  The cradle 23 is provided with a lift-up mechanism and a package brake mechanism (not shown). The lift-up mechanism raises the cradle 23 when the yarn is broken, so that the package 30 can be separated from the winding drum 24. The package brake mechanism is configured to stop the rotation of the package 30 held by the cradle 23 at the same time when the cradle 23 is raised by the lift-up mechanism.

  The winding unit main body 16 includes, in order from the yarn feeding bobbin 21 side, in the yarn traveling path between the yarn feeding bobbin 21 and the winding drum 24, the balloon controller 12, the tension applying device 13, and the splicer device (yarn). The joint portion 14 and the clearer (thread thickness detector) 15 are arranged.

  As shown in FIG. 1, the winder unit 10 includes a magazine type supply device 60 for supplying the yarn supplying bobbin 21. As shown in FIG. 1, the magazine type supply device 60 includes a magazine holder 61 that extends obliquely upward from the lower part of the winder unit 10 and a bobbin storage that is attached to the tip of the magazine holder 61. And a device 62.

  The bobbin storage device 62 includes a magazine pocket 63, and the magazine pocket 63 has a plurality of storage holes arranged in a circle. The supply bobbin 70 can be set in an inclined posture in each of the storage holes. The magazine pocket 63 can be intermittently rotationally driven by a motor (not shown), and a bobbin supply path (not shown) of the magazine holder 61 is provided by the intermittent drive and a control valve (not shown) provided in the magazine pocket 63. The supply bobbins 70 can be dropped one by one. The supply bobbin 70 supplied to the bobbin supply path is guided to the yarn supplying bobbin holding portion 71 while keeping the inclined posture.

  The yarn supplying bobbin holding portion 71 includes a rotating means (not shown), and after receiving the supply bobbin 70 from the bobbin supply path, rotates the supply bobbin 70 so as to cause the supply bobbin 70 to be brought into an upright position from an oblique position. As a result, the supply bobbin 70 is appropriately supplied to the lower part of the winding unit main body 16 as the yarn feeding bobbin 21, and the winding operation by the winder unit 10 can be performed.

  The balloon controller 12 assists the unwinding of the yarn from the yarn supplying bobbin 21 by lowering the regulating member 40 covering the core tube of the yarn supplying bobbin 21 in conjunction with the unwinding of the yarn from the yarn supplying bobbin 21. Is. The regulating member 40 contacts the balloon formed on the upper portion of the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn unwound from the yarn feeding bobbin 21, and applies the appropriate tension to the balloon to release the yarn. Assist the cocoon. An unillustrated sensor for detecting the chase portion of the yarn feeding bobbin 21 is provided in the vicinity of the restricting member 40. When this sensor detects the descent of the chase portion, the restricting member 40 is followed accordingly. For example, it can be lowered by an air cylinder (not shown).

  The tension applying device 13 applies a predetermined tension to the traveling yarn 20. As the tension applying device 13, for example, a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth can be used. The movable comb teeth can be rotated by a rotary solenoid so that the comb teeth are engaged or released. The tension applying device 13 can apply a certain tension to the wound yarn and improve the quality of the package 30.

  The splicer device 14 detects the lower thread on the yarn feeding bobbin 21 and the package 30 side when the clearer 15 detects a yarn defect and performs yarn cutting or when the yarn breakage occurs during unwinding from the yarn feeding bobbin 21. The upper thread is spliced. As the splicer device 14, a mechanical device, a device using a fluid such as compressed air, or the like can be used.

  The clearer 15 is configured to detect a defect by detecting the thickness of the yarn 20 with an appropriate sensor. By processing the signal from the sensor of the clearer 15 with the analyzer 52 (FIG. 2), A yarn defect such as a slab can be detected. The clearer 15 can also function as a sensor that detects the traveling speed of the yarn 20 and a sensor that simply detects the presence or absence of the yarn 20. In the vicinity of the clearer 15, an unillustrated cutter is provided for cutting the yarn 20 immediately when the clearer 15 detects a yarn defect.

  On the lower side and upper side of the splicer device 14, a lower thread guide pipe 25 that captures and guides the lower thread on the yarn feeding bobbin 21 and an upper thread guide pipe that captures and guides the upper thread on the package 30 (capture) Means) 26. A suction port 32 is formed at the distal end of the lower thread guide pipe 25, and a suction mouth (mouse portion) 34 is provided at the distal end of the upper thread guide pipe 26. Appropriate negative pressure sources are connected to the lower thread guide pipe 25 and the upper thread guide pipe 26, respectively, and a suction flow can be applied to the suction port 32 and the suction mouth 34.

  With this configuration, at the time of yarn breakage or yarn cut, the suction port 32 of the lower yarn guide pipe 25 captures the lower yarn at the position shown in FIGS. 1 and 2, and then rotates upward about the shaft 33. The lower thread is guided to the splicer device 14 by moving. At substantially the same time, the upper thread guide pipe 26 is rotated upward from the position shown in the drawing about the shaft 35, and the upper thread existing on the surface of the package 30 reversed by the drum drive motor 53 is removed by the suction mouse 34. To capture. Subsequently, the upper thread guide pipe 26 rotates downward about the shaft 35 to guide the upper thread to the splicer device 14.

  The yarn unwound from the yarn supplying bobbin 21 is wound around a winding bobbin 22 disposed on the downstream side of the splicer device 14. The take-up bobbin 22 is driven by rotating a take-up drum 24 disposed opposite to the take-up bobbin 22. As shown in FIG. 2, the take-up drum 24 is connected to an output shaft of a drum drive motor 53, and the operation of the drum drive motor 53 is controlled by a motor control unit 54. The motor control unit 54 is configured to perform control for operating and stopping the drum drive motor 53 in response to an operation signal from the unit control unit 50.

  With the above configuration, when the bobbin is supplied from the magazine type supply device 60 to the yarn supply side, the take-up bobbin 22 is driven, and the yarn 20 unwound from the yarn supply bobbin 21 is transferred to the take-up bobbin 22. The package 30 having a predetermined length can be formed by being wound.

  Next, the upper thread guide pipe 26 will be described with reference to FIG. FIG. 3 is an enlarged side view showing how the upper thread guide pipe 26 pulls out the upper thread 90 from the package 30.

  As shown in FIG. 3, the unit frame 11 is provided with a stepping motor 41 for rotating the upper thread guide pipe 26. An output gear 45 is fixed to the output shaft of the stepping motor 41. On the other hand, a driven gear 43 is fixed to the base of the upper thread guide pipe 26, and the output gear 45 and the driven gear 43 are connected via a toothed belt 44.

  As shown in FIG. 2, the stepping motor 41 is connected to a stepping motor control unit 51, and the stepping motor control unit 51 outputs a drive pulse signal to the stepping motor 41 to drive the stepping motor 41. ing. The stepping motor control unit 51 is connected to the unit control unit 50, and can control the control of each part such as the splicer device 14, the clearer 15, the winding drum 24 and the control of the upper thread guide pipe 26.

  With the above configuration, when the yarn unwound from the yarn supplying bobbin 21 is cut, or when the clearer 15 detects a yarn defect and cuts the yarn with a cutter, the unit is based on a signal from the clearer 15. The controller 50 immediately operates the lift-up mechanism and the package brake mechanism. As a result, the package 30 is separated from the winding drum 24 and the rotation of the package 30 is braked. However, the package 30 rotates to some degree of inertia until it is completely stopped by the package brake mechanism, so that the yarn end that is cut and free is wound around the outer peripheral surface of the package 30.

  When yarn breakage or yarn breakage is detected, the unit control unit 50 transmits a control signal to the stepping motor control unit 51, and the stepping motor control unit 51 that has received the signal transmits a drive pulse signal to the stepping motor 41. As a result, the upper thread guide pipe 26 is rotated upward by the driving of the stepping motor 41 and stops at the position (capture position) indicated by the solid line in FIG.

  At this capture position, the suction mouth 34 at the tip of the upper thread guide pipe 26 faces the outer peripheral surface of the package 30 with a small gap. As described above, the upper thread guide pipe 26 is connected to the negative pressure source, and therefore, the suction flow from the suction mouth 34 can be applied to the outer peripheral surface of the package 30. The suction mouth 34 is formed to be elongated so as to include the winding width of the package 30, whereby a suction flow can be applied to the outer peripheral surface of the package 30 over the entire winding width direction.

  In this state, the unit controller 50 sends a signal to the motor controller 54 to rotate the winding drum 24 at a constant speed in the direction opposite to that during yarn winding. The lift-up mechanism and the package brake mechanism described above are released at this point. By this reverse driving, the yarn end (upper yarn 90) wound around the outer peripheral surface of the package 30 rotates together with the package 30. Then, the thread end of the upper thread 90 is sucked into the upper thread guide pipe 26 by the action of the suction flow when passing through the portion facing the suction mouth 34.

  At this time, the unit controller 50 is configured to reversely rotate the winding drum 24 while the upper thread guide pipe 26 is stopped at the capturing position indicated by the solid line in FIG. 3 (in other words, the reverse rotation amount of the winding drum 24). Is controlled in accordance with the diameter of the yarn layer of the package 30.

  Specifically, this control is performed as follows. That is, the unit control unit 50 counts a signal from an unillustrated encoder (rotation sensor) installed on the winding drum 24, so that the winding drum 24 starts to wind from the empty winding bobbin 22. You can get the number of rotations. Then, the unit control unit 50 calculates the diameter of the yarn layer of the package 30 at the present time using the cumulative number of rotations and parameters such as the diameter of the winding drum 24, the thickness of the yarn, and the tension applied to the yarn. And can be obtained.

  In general, even when the winding drum 24 is reversely rotated by an equal amount, when the diameter of the yarn layer of the package 30 is large, the yarn end of the upper yarn 90 faces the suction mouth 34 as compared with the case where the yarn layer is small. The number of times (opportunity for capturing the upper thread 90) is reduced. In this regard, in this embodiment, the unit control unit 50 controls the motor control unit 54 so as to increase or decrease the reverse rotation amount of the winding drum 24 according to the diameter of the yarn layer obtained by the above-described calculation. Regardless of the diameter of the layer, the package is rotated backward by a predetermined number of turns. Thereby, even when the diameter of the yarn layer of the package 30 is large, the yarn end of the upper yarn 90 on the outer peripheral surface of the package 30 can be repeatedly faced to the suction mouth 34 a sufficient number of times and reliably captured.

  Inside the suction mouth 34, a comb member 42 is arranged along the longitudinal direction of the suction mouth 34. Therefore, the upper thread 90 sucked by the suction mouth 34 is held by being hooked on the comb member 42. In addition, it can replace with the comb member 42, and it can change suitably a structure according to circumstances, such as a thread | yarn type, such as using a saw blade-shaped member or a member to which sandpaper is pasted.

  After the winding drum 24 is rotated in the reverse direction as necessary as described above, the unit controller 50 sends a signal to the stepping motor controller 51 to immediately rotate the upper thread guide pipe 26 to the lower guide position. Even after the upper thread guide pipe 26 starts to rotate downward, the reverse rotation of the winding drum 24 is continued. The unwinding speed of the upper thread 90 from the package 30 due to the reverse rotation of the winding drum 24 (in other words, the circumferential speed of the package 30 rotating in reverse) V1 and the downward rotation of the upper thread guide pipe 26 are described above. It is controlled by the unit controller 50 so that the moving speed V2 of the suction mouse 34 becomes equal (V1 = V2).

  Therefore, during the rotation of the upper thread guide pipe 26, the speed of the thread fed out by the reverse rotation of the package 30 can be made equal to the speed of the thread pulled out by the suction mouth 34. As a result, the upper thread 90 once sucked by the suction mouse 34 is pulled out of the suction mouse 34, thereby preventing the upper thread 90 from being removed from the suction mouse 34 and preventing the guide to the splicer device 14 from failing. Can do. On the other hand, it is possible to prevent an excessive tension from being applied to the upper thread 90, and it is also possible to prevent the upper thread 90 from being rubbed and damaged by the comb member 42 installed in the portion of the suction mouth 34.

  Next, the control of the upper thread guide pipe 26 and the package 30 during the yarn joining operation will be described with reference to FIG. When the flow of FIG. 4 is started, the unit control unit 50 outputs a signal indicating that the yarn has been cut during the winding operation, or a signal indicating that the yarn has been detected by the clearer 15 and the yarn has been cut. And waits until it is received from the clearer 15 (S101). When the yarn break signal or the yarn cut signal is received, the unit controller 50 rotates the upper yarn guide pipe 26 to the catching position indicated by the solid line in FIG. 3 and stops (S102). Then, while the suction flow from the suction mouth 34 is applied to the outer peripheral surface of the package 30, the reverse rotation of the winding drum 24 is started, and the upper thread is suctioned and captured (S103, S104). Note that, as described above, the reverse rotation amount of the winding drum 24 is set so that the diameter of the yarn layer is large or small so that the package 30 reversely rotates by a predetermined number of turns regardless of the size of the yarn layer of the package 30. Will be decided accordingly. The unit controller 50 waits until the winding drum 24 rotates in the reverse direction by the rotation amount thus determined (S105).

  When the necessary reverse rotation is completed, the unit controller 50 rotates the upper thread guide pipe 26 to the lower guide position while maintaining the reverse rotation of the winding drum 24 (S106). At this time, the unit controller 50 controls the stepping motor so that the speed V1 at which the yarn is unwound by the reverse rotation of the package 30 is equal to the speed V2 at which the suction mouth 34 at the tip of the upper thread guide pipe 26 moves. The stepping motor 41 is controlled via the unit 51.

  When the rotation of the upper thread guide pipe 26 to the guide position is completed, the unit controller 50 checks the signal of the clearer 15 (S107). That is, in the present embodiment, when the upper thread 90 is normally guided to the splicer device 14 by the upper thread guide pipe 26, simultaneously, the thread path of the upper thread 90 passes through the clearer 15, and the clearer 15 detects the thread. It is like that. Therefore, when the clearer 15 detects the yarn, it means that the upper yarn has been successfully guided to the splicer device 14, and therefore the upper yarn guide pipe 26 is moved to a standby position that does not interfere with the winding operation. (S108), the control flow relating to the upper thread guidance is terminated. If the clearer 15 does not detect the upper thread, it means that the upper thread guide has failed, so the process returns to S102, and the upper thread guide pipe 26 tries to capture the thread end of the upper thread 90 again.

  As described above, the winder unit 10 in the automatic winder according to the present embodiment captures the upper thread 90 unwound from the package 30 reversely rotated by the drum drive motor 53 with the suction mouse 34 and guides it to the splicer device 14. An upper thread guide pipe 26 is provided. Further, the winder unit 10 includes a stepping motor 41 for rotating the upper thread guide pipe 26 and a unit controller 50. The unit controller 50 performs stepping so that the suction mouth 34 of the upper thread guide pipe 26 that has captured the thread moves at a speed V2 that is equal to or lower than the speed V1 at which the upper thread 90 is unwound from the thread layer by the reverse rotation of the package 30. The motor 41 is configured to be controllable.

  With this configuration, the suction mouth 34 moves at a speed equal to or lower than the speed at which the upper thread 90 is drawn out from the package 30, so that the upper thread 90 is detached from the suction mouse 34 during rotation after the upper thread guide pipe 26 captures the thread 20. This prevents the thread from coming off and the upper thread 90 can be reliably guided to the splicer device 14. Further, even if the length of the upper thread 90 sucked by the upper thread guide pipe 26 is short, the above-described thread detachment can be prevented, so that the length of feeding the upper thread 90 by the reverse rotation of the package 30 can be shortened and the thread is wasted. This can be prevented and work time can be shortened. Further, since the upper thread 90 is not forcibly pulled out when the upper thread guide pipe 26 is rotated, the upper thread 90 is damaged by being rubbed or caught on the portion of the suction mouth 34 (particularly, the comb member 42). Can be prevented. Further, since the stepping motor 41 is independent of the drum drive motor 53 of the package 30, the reverse rotation of the package 30 and the downward rotation of the upper thread guide pipe 26 can be easily satisfied so as to satisfy the above speed relationship. Can be controlled in conjunction with

  Further, in the winder unit 10 of the present embodiment, the unit controller 50 controls the unwinding speed of the upper thread 90 and the moving speed of the suction mouse 34 due to the reverse rotation of the package 30 to be equal.

  With this configuration, it is possible to prevent unnecessarily unwinding of the upper thread 90 and prevent waste of the thread, and to quickly guide the upper thread 90 captured by the upper thread guide pipe 26 to the splicer device 14.

  Further, in the winder unit 10 of the present embodiment, the drive source of the upper thread guide pipe 26 is constituted by a stepping motor 41.

  With this configuration, the rotation of the upper thread guide pipe 26 can be accurately controlled by the stepping motor 41 that can adjust the rotation angle.

  Further, the winder unit 10 of the present embodiment rotates the upper thread guide pipe 26 to the splicer device 14 after rotating the package 30 backward by a predetermined number of turns regardless of the diameter of the yarn layer.

  With this configuration, even when the yarn layer of the package 30 is large, it is possible to satisfactorily secure an opportunity for the yarn end of the upper yarn 90 to be captured by the suction mouth 34, and the upper yarn 90 can be stably captured by the suction mouth 34. Can be made. Further, since the drum driving motor 53 and the stepping motor 41 are provided independently, it is easy to flexibly change the control (only) of the drum driving motor 53 in accordance with the diameter of the yarn layer.

  Although the preferred embodiment of the present invention has been described above, the above configuration can be further modified as follows.

  In the embodiment described above, the yarn end of the package 30 is captured by the upper yarn guide pipe 26 by reversely rotating the package 30 by a predetermined number of turns. Instead of this configuration, the yarn end detection sensor 80 is replaced by the upper yarn. It can also be set as the structure attached to the inside of the guide pipe 26. FIG. FIG. 5 shows a modification in which the upper thread guide pipe 26 is provided with a thread end detection sensor. In addition, in this modification, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted to the same and similar structure as the said embodiment.

  In the winder unit 10 of this modification, a yarn end detection sensor 80 is disposed in the upper yarn guide pipe 26 as shown in FIG. As the yarn end detection sensor 80, for example, an optical sensor can be used. The yarn end detection sensor 80 is electrically connected to the unit control unit and configured to transmit a yarn end detection signal to the unit control unit. With this configuration, the unit control unit stops the upper thread guide pipe 26 at the capturing position indicated by the solid line in FIG. 5 and reversely rotates the package 30. When the unit control unit receives the yarn end detection signal, the unit control unit controls the stepping motor control unit 51 to rotate the upper yarn guide pipe 26 downward.

  Also in this modified example, when the upper thread guide pipe 26 is rotated downward, the unit control unit sets the unwinding speed V1 of the upper thread 90 and the moving speed V2 of the suction mouth 34 by the reverse rotation of the package 30. Are controlled to be equal. Therefore, the yarn end detection sensor 80 is installed on the tip side of the upper yarn guide pipe 26 (for example, in the vicinity of the suction mouth 34), and when the upper yarn 90 is sucked into the upper yarn guide pipe 26 by a small amount, it is detected. Even if the upper yarn guide pipe 26 starts to rotate downward, the yarn can be prevented from coming off and the yarn can be reliably guided to the splicer device 14.

  In the embodiment and the modification, the package 30 is driven by the winding drum 24, but instead of this configuration, the driving force of the motor is directly transmitted to the shaft portion (the winding bobbin 22) of the package 30. It can also be configured.

  In the embodiment and the modification described above, when the upper thread guide pipe 26 is rotated downward, the unit control unit 50 causes the unwinding speed V1 of the upper thread 90 and the movement of the suction mouse 34 due to the reverse rotation of the package 30. The speed V2 is controlled to be equal (V1 = V2). However, instead of this, the moving speed V2 of the suction mouse 34 can be controlled to be smaller than the unwinding speed V1 (V1> V2).

  Instead of acquiring the diameter of the yarn layer of the package 30 based on the cumulative number of rotations of the winding drum 24, the cumulative winding length is obtained by, for example, multiplying the yarn traveling speed detected by the clearer 15 by the winding time. Based on this, it is possible to change to a configuration for calculating the diameter of the yarn layer. In addition, for example, a diameter sensor that detects the diameter of the yarn layer by detecting the rotation angle of the cradle 23 can be provided, and the configuration can be changed to acquire the diameter of the yarn layer based on a signal from the diameter sensor. .

  The winder unit 10 of the above embodiment supplies the yarn supplying bobbin 21 by the magazine type supply device 60. However, the present invention is not limited to this configuration. For example, the tray on which the yarn supplying bobbin 21 is set is conveyed along an appropriate path. By doing so, it can change to the structure supplied to the winder unit 10.

The side view of the winder unit which concerns on one Embodiment of this invention. The front view which shows the schematic structure of the winder unit of this embodiment. The expanded side view which shows the mode of rotation from the capture position of the upper thread guide pipe of this embodiment. The flowchart which shows control of rotation of an upper thread guide pipe. The enlarged side view which shows the modification which equips an upper thread guide pipe with a thread end detection means.

Explanation of symbols

10 Winder unit (automatic winder winding unit)
14 Splicer device (yarn splicing part)
22 Winding bobbin 24 Winding drum 26 Upper thread guide pipe (capturing means)
30 package 34 suction mouse 41 stepping motor (capture means drive source)
50 Unit Control Unit 51 Stepping Motor Control Unit 53 Drum Drive Motor 54 Motor Control Unit

Claims (4)

In a winding unit of an automatic winder provided with a catching means for catching a yarn unwound from a package rotated in reverse by a drive source by a mouse part and guiding it to a yarn joining part,
A capture means drive source for rotating the capture means;
A control unit capable of controlling the capture means drive source so that the mouse unit that has captured the yarn moves at a speed equal to or lower than a speed at which the yarn is unwound from the yarn layer by reverse rotation of the package;
An automatic winder winding unit characterized by comprising: A winding unit for an automatic winder according to claim 1,
The winding unit of the automatic winder, wherein the control unit controls the yarn unwinding speed by the reverse rotation of the package to be equal to the moving speed of the mouse unit. A winding unit for an automatic winder according to claim 1 or 2,
The winding unit for an automatic winder, wherein the capturing means drive source is a stepping motor. A winding unit for an automatic winder according to any one of claims 1 to 3,
A winding unit for an automatic winder, wherein the package is rotated backward by a predetermined number of turns regardless of the diameter of the yarn layer in a state where the mouse portion is brought close to the outer peripheral surface of the package.

Images