JP2011144028A - Yarn winding machine and yarn guiding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn winding machine capable of properly guiding yarn by a thread handler lever when pulling out the yarn from a newly supplied yarn feeding bobbin. <P>SOLUTION: An automatic winder includes a bobbin support 7, a bobbin yarn guide pipe 25, a bobbin supply device 60, a bobbin supply device drive motor 41, a bobbin support drive motor 43, a yarn end holding port 66, the thread handler lever 31 and a control part 6. The bobbin support 7 supports the yarn feeding bobbin 21. The bobbin supply device drive motor 41 drives the bobbin supply device 60. The bobbin support drive motor 43 drives the bobbin support 7. The control part 6 controls the drive of the thread handler lever 31. The yarn approaching lever 31 is driven by a thread handler lever drive motor 42 being an exclusive drive means arranged separately from the bobbin supply device drive motor 41 and the bobbin support drive motor 43. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention mainly relates to a yarn winding machine. Specifically, the present invention relates to a configuration for appropriately pulling out a yarn from a new yarn supplying bobbin in the yarn winding machine.

  A yarn winding machine is known in which a yarn is unwound from a yarn supplying bobbin and wound around a winding tube to form a winding package. Generally, this type of yarn winding machine includes a bobbin support portion that supports a yarn supplying bobbin, and a bobbin supply mechanism that supplies a new yarn supplying bobbin when the yarn supplying bobbin becomes empty. For example, Patent Literature 1 and Patent Literature 2 disclose a yarn winding machine including a magazine type bobbin supply device.

  When a new yarn supplying bobbin is supplied from the supply device to the bobbin support portion, the yarn (lower yarn) on the yarn supplying bobbin side is sucked and held by the relay pipe (lower yarn guide pipe) until the yarn joining device. Guided. In the yarn joining device, the lower yarn and the upper yarn on the package side are joined. Then, after the yarn splicing is completed, the winding of the new yarn supplying bobbin can be wound on the surface of the package by restarting the winding.

  By the way, in a yarn winding machine equipped with a magazine-type bobbin supply device, a new yarn supply bobbin is supplied in a state where a yarn is pulled between the bobbin supply device and the bobbin supply device. A yarn winding machine provided with a magazine-type bobbin supply device includes a yarn shifting lever (yarn guide member) that hooks and pulls the yarn to guide the yarn to a position where it can be sucked by a relay pipe.

  Further, the yarn shifting lever also serves to loosen the yarn so that the relay pipe can suck the yarn. That is, by moving the yarn gathering lever while the lower thread is hooked, the lower thread can be pulled and pulled out from the yarn supplying bobbin and can be loosened. As a result, the length of the yarn end to be sucked into the relay pipe can be secured above a certain level, so that the yarn end can be reliably captured by the relay pipe.

JP 2009-18930 A JP-A-9-183571

  By the way, Patent Document 1 describes a bobbin holding peg that drives a yarn feeding bobbin supplied obliquely from a magazine-type bobbin supply unit to an upright posture. Thus, when changing the posture of the yarn supplying bobbin, there is a problem that the lower yarn is broken unless the yarn path is properly guided in accordance with the change in the posture of the bobbin. Therefore, in the conventional yarn winding machine, when the posture of the yarn supplying bobbin is changed, the lower yarn is guided by the yarn shifting lever to prevent the lower yarn from being broken.

  In order to guide the yarn by the yarn gathering lever so that the lower yarn is not broken, it is necessary to match the movement of the yarn gathering lever with the change in the posture of the yarn feeding bobbin. However, the timing and speed at which the posture of the yarn supplying bobbin changes depends on the shape of the core tube of the yarn supplying bobbin. In this regard, in the conventional yarn winding machine, the yarn moving lever is driven by a drive source that is common to other configurations provided in the yarn winding machine. Accordingly, it is impossible to independently change the movement start timing, the movement speed, and the like of the yarn gathering lever. For this reason, in the conventional yarn winding machine, it is not possible to cope with the case where the movement of the yarn gathering lever and the change in the posture of the yarn feeding bobbin are misaligned. In such a case, yarn breaks frequently occur. .

  Also, in the case of a configuration in which the yarn is pulled out and slackened by the yarn gathering lever, if the amount of yarn slackening is to be kept constant, the yarn gathering lever has to be moved more greatly in the case of a highly stretchable yarn. That is, it is necessary to change the moving amount of the yarn shifting lever according to the type of yarn. Therefore, conventionally, several types of stoppers that regulate the movement of the yarn gathering lever are prepared, and the amount of movement of the yarn gathering lever is changed by changing the stopper according to the type of yarn. However, with this conventional configuration, there is a problem in that the stopper has to be changed every time the type of yarn is changed, which places a heavy burden on the operator.

  The present invention has been made in view of the above circumstances, and its main purpose is to guide the yarn appropriately by the yarn shifting lever (yarn guide member) when the yarn is pulled out from the newly supplied yarn feeding bobbin. An object of the present invention is to provide a yarn winding machine that can perform this operation.

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 a first aspect of the present invention, a yarn winding machine having the following configuration is provided. That is, the yarn winding machine includes a bobbin support portion, a catching guide portion, a bobbin supply portion, a drive source, a yarn end holding portion, a yarn guide member, and a control portion. The bobbin support part supports the yarn feeding bobbin. The catching guide part catches the yarn of the yarn feeding bobbin. The bobbin supply unit supplies a yarn feeding bobbin to the bobbin support unit. The drive source drives the bobbin support part and / or the bobbin supply part. The yarn end holding unit is provided in the bobbin supply unit and holds the yarn end of the yarn supplying bobbin. The yarn guide member hooks a yarn passing between the yarn supply bobbin supported by the bobbin support portion and the yarn end holding portion, and guides the yarn to a position where the catch guide portion can receive the yarn. The control unit controls driving of the yarn guide member. The yarn guide member is driven by dedicated drive means provided separately from the drive source.

  That is, in the conventional yarn winding machine, since the yarn guide member is driven by the driving means common to other configurations, it is difficult to independently and flexibly control the drive of the yarn guide member. In this regard, by driving the yarn guide member with dedicated drive means as described above, the drive of the yarn guide member can be controlled independently, so the drive amount and drive speed of the yarn guide member can be adjusted as necessary. Can be changed flexibly. As a result, the yarn can be properly guided, so that the yarn end can be reliably caught by the catching guide portion while preventing yarn breakage.

  The yarn winding machine preferably includes a guide member that interacts with the yarn guide member to loosen the yarn.

  By loosening the yarn in this way, the yarn end can be easily captured by the capture guide portion.

  In the yarn winding machine, the dedicated driving means is preferably a stepping motor.

  That is, the stepping motor is particularly suitable as a drive source for the yarn guide member because the position and speed can be controlled with a simple circuit configuration. In particular, by using a stepping motor as a drive source, the yarn guide member can be easily positioned, so that a stopper or the like for the positioning becomes unnecessary.

  The yarn winding machine is preferably configured as follows. That is, the yarn winding machine includes an operation input unit that can input a set value. The control unit can change at least one of a timing at which the driving of the yarn guide member is started and a driving speed of the yarn shifting member according to a set value set by the operation input unit.

  For example, when changing the posture of the yarn feeding bobbin, the speed and timing at which the posture changes varies depending on the size and shape of the core tube. Therefore, if the drive speed and drive timing of the yarn guide member can be changed according to the set value as described above, the yarn guide member can be driven in accordance with the posture change of the yarn supply bobbin, and the yarn breakage Can be prevented.

  The yarn winding machine can also be configured as follows. That is, the yarn winding machine includes an operation input unit that can input a set value. The control unit can change the drive amount of the yarn guide member according to a set value set by the operation input unit.

  For example, if the stretchability of the yarn is different, the length of the yarn actually pulled out from the yarn feeding bobbin is different even if the yarn guide member is driven by the same distance. Therefore, if the drive amount of the yarn guide member can be changed according to the set value as described above, the length of the yarn drawn from the yarn feeding bobbin can be made constant regardless of the type of yarn. Become.

  According to a second aspect of the present invention, there is provided a yarn guiding method for guiding a yarn of a yarn supplying bobbin to a yarn winding machine, which includes the following steps. That is, the yarn guide method includes a bobbin supplying step, a bobbin posture changing step, and a yarn guiding step. In the bobbin supplying step, the yarn supplying bobbin is supplied to the bobbin support portion. In the bobbin posture changing step, the posture of the yarn supplying bobbin supplied to the bobbin support portion is changed to a posture capable of unwinding the yarn from the yarn supplying bobbin. In the yarn guiding step, the yarn is guided to a predetermined position by hooking the yarn of the yarn supplying bobbin onto the yarn guiding member and driving the yarn guiding member. The yarn guiding process is performed in parallel with the bobbin posture changing process. In the yarn guiding step, the driving of the yarn guiding member is controlled so that the portion where the yarn is hooked on the yarn guiding member is on the extension line of the axis of the yarn feeding bobbin.

  Thus, when changing the posture of the yarn supplying bobbin, the yarn can be pulled out in the axial direction of the yarn supplying bobbin by guiding the yarn with the yarn guiding member. As a result, yarn breakage when changing the posture of the yarn feeding bobbin can be prevented, and a high-quality package can be formed.

  The yarn guiding method is preferably as follows. That is, the yarn guiding method includes a yarn loosening step of loosening the yarn by further driving the yarn guiding member after the yarn guiding step. In the yarn loosening step, the driving of the yarn shifting member is controlled so that the length of the yarn pulled out from the yarn feeding bobbin is constant regardless of the type of yarn.

  For example, if the stretchability of the yarn is different, the length of the yarn actually pulled out from the yarn feeding bobbin is different even if the yarn guide member is driven by the same distance. In this regard, by changing the drive of the yarn guide member according to the type of yarn as described above, the length of the yarn drawn from the yarn feeding bobbin can be made constant regardless of the type of yarn. . As a result, the yarn end of the yarn feeding bobbin can be reliably captured in a later step, and thus the package can be manufactured efficiently.

1 is an external perspective view showing an overall configuration of an automatic winder according to an embodiment of the present invention. The typical side view of a winder unit. The external appearance perspective view of a bobbin supply apparatus. The side view which shows the mode of the bobbin support part when discharging | emitting an empty bobbin. The side view which shows the mode of a bobbin support part when a new yarn feeding bobbin is received. The side view which shows the mode of the bobbin support part which hold | maintained the yarn feeding bobbin in the upright state. The side surface partial sectional view which shows a mode when discharging | emitting an empty bobbin. The side surface partial sectional view which shows a mode when supplying a new yarn feeding bobbin. The side surface partial sectional view which shows the mode in the middle of changing the attitude | position of a yarn feeding bobbin. The side surface partial sectional view which shows a mode when a yarn feeding bobbin is made to stand upright. Side surface partial sectional drawing explaining a mode that a thread | yarn is loosened. The side surface partial sectional view which shows a mode when the lower thread is caught with the lower thread guide pipe. FIG. 6 is a partial side cross-sectional view for explaining a case where the yarn feeding bobbin is made upright without guiding the yarn by the yarn shifting lever.

  Next, an embodiment of the present invention will be described. FIG. 1 is a schematic external perspective view of an automatic winder according to an embodiment of the present invention. The automatic winder (yarn winding machine) 1 according to the present embodiment includes a plurality of winder units 2 arranged side by side and a machine control device 3 arranged at one end in the arranged direction.

  Each winder unit 2 includes a unit frame 4 provided on the left and right sides in a front view, and a winding unit body 5 provided on the side of the unit frame 4.

  FIG. 2 shows a schematic side view of the winder unit 2. As shown in FIG. 2, the winding unit body 5 of the winder unit 2 includes a bobbin support portion 7 and a winding portion 8.

  The bobbin support 7 has a bobbin holding peg 9. The bobbin holding peg 9 is configured to be able to hold the yarn supplying bobbin 21 in a substantially upright state by being inserted in the axial direction with respect to the core tube 21a of the yarn supplying bobbin 21. 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 unwound from the yarn supplying bobbin 21 can be wound on the winding bobbin 22. A traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and the traverse groove can traverse the yarn 20 with a predetermined width. With the above configuration, the yarn 20 unwound from the yarn supplying bobbin 21 can be wound around the winding bobbin 22 while traversing to form a package 29 having a predetermined length and a predetermined shape.

  The winding unit body 5 includes various devices in a yarn traveling path between the bobbin support portion 7 and the winding portion 8. Specifically, in the yarn traveling path, the unwinding assisting device 12, the yarn slackening portion 30, the tension applying device 13, and the yarn are sequentially arranged from the bobbin holding peg 9 side to the traverse drum 24 side. A splicing device 14 and a clearer (yarn quality measuring device) 15 are arranged.

  The unwinding assisting device 12 brings the movable member 76 into contact with the balloon formed on the upper portion of the yarn supplying bobbin 21 by swinging the yarn to be unwound from the yarn supplying bobbin 21, and appropriately controls the size of the balloon. This assists the unwinding of the yarn 20.

  The tension applying device 13 applies a predetermined tension to the traveling yarn 20. The tension applying device 13 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.

  The clearer 15 is configured to detect a yarn defect (yarn defect) such as a slab by monitoring the thickness of the yarn 20. A cutter 39 for cutting the yarn 20 immediately when the clearer 15 detects a yarn defect is disposed near the clearer 15.

  The yarn joining device 14 detects when the clearer 15 detects a yarn defect and cuts the yarn with the cutter 39, when the yarn being unwound from the yarn feeding bobbin 21 is broken, or when the yarn feeding bobbin 21 is replaced. For example, the lower thread on the yarn feeding bobbin 21 side and the upper thread on the package 29 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.

  A lower thread guide pipe (capturing guide part) 25 for capturing and guiding the lower thread on the yarn feeding bobbin 21 side and an upper thread on the package 29 side are captured and guided on the lower side and upper side of the yarn joining device 14. An upper thread guide pipe 26 is provided. A suction port 32 is formed at the tip of the lower thread guide pipe 25, and a suction mouth 34 is provided at the tip 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, when the yarn is broken, when the yarn is cut, or when the yarn feeding bobbin is replaced, the suction port 32 of the lower yarn guide pipe 25 rotates to the lower yarn catching position 90 shown in FIG. Then, the lower thread is guided to the yarn joining device 14 by rotating upward about the shaft 33. At substantially the same time, the upper thread guide pipe 26 is rotated upward from the position shown in FIG. 2 about the shaft 35 and the package 29 is rotated in the reverse direction. Capture by. Subsequently, the upper thread guide pipe 26 rotates downward about the shaft 35 to guide the upper thread to the yarn joining device 14. In the yarn joining device 14, the yarn joining of the lower yarn and the upper yarn is performed.

  In the vicinity of the lower thread catching position 90, a thread loosening portion 30 is provided. The yarn slack portion 30 includes a lower thread guide (guide member) 38 disposed immediately above the bobbin holding peg 9 and below the lower thread capturing position 90, a cutter 36 disposed above the lower thread capturing position 90, A cutter introduction guide 37 disposed in the vicinity of the cutter 36. The lower thread guide 38 guides the thread so as to be pulled out directly from the yarn feeding bobbin 21 held in the upright state by the bobbin support portion 7, and interacts with a thread shifting lever 31 described later. This is a member for loosening the yarn (details will be described later). The cutter introduction guide 37 is a member for guiding the lower thread to a position where it can be cut by the cutter 36 when the lower thread is moved to the lower thread catching position 90 by a later-described thread shifting lever 31.

  A magazine-type bobbin supply device (bobbin supply unit) 60 is disposed on the front side of the winding unit body 5. The bobbin supply device 60 is configured to supply a new yarn supplying bobbin to the bobbin support 7 when the yarn supplying bobbin that is unwinding the yarn at the bobbin support 7 becomes empty.

  With the above configuration, when a new yarn supplying bobbin from the bobbin supplying device 60 is supplied to the bobbin support portion 7, the new yarn supplying bobbin 21 side lower yarn and the package 29 side upper yarn are spliced together. Is done. Then, after the yarn splicing, the package 29 is driven by the traverse drum 24 so that the yarn can be unwound from the yarn supplying bobbin 21 and wound around the surface of the package 29.

  The empty yarn feeding bobbin is discharged from the bobbin support portion 7 toward the right side (front side of the apparatus) in FIG. As shown in FIG. 1, a conveyor 81 is disposed below the front side of the winder unit 2. Empty bobbins discharged from each winder unit 2 are conveyed on the conveyor 81 and collected in a collection box (not shown).

  Further, the winder unit 2 includes a control unit 6 for controlling each component included in the winder unit 2. The control unit 6 includes hardware such as an unillustrated CPU, RAM, and ROM, and software such as a control program stored in the ROM. The hardware and software cooperate to control each configuration of the winder unit 2. Moreover, the control part 6 with which each winder unit 2 is provided is comprised so that communication with the said machine base control apparatus 3 is possible. Thereby, the operation of the plurality of winder units 2 included in the automatic winder 1 can be centrally managed by the machine control device 3.

  In addition, the machine base control device 3 is provided with an operation input unit 10 including a numeric keypad. An operator of the automatic winder 1 can give various winding condition setting change instructions to the plurality of winder units 2 included in the automatic winder 1 by operating the operation input unit 10. However, the operator of the automatic winder 1 can also give an instruction to change the winding condition to each winder unit 2 by operating the operation input unit 10.

  Next, the magazine type bobbin supply device 60 will be described in detail. The bobbin supply device 60 includes a magazine holding portion 61 that extends obliquely upward from the lower part of the winder unit 2, a magazine can 62 attached to the tip of the magazine holding portion 61, and a lower portion of the magazine can 62. And a guide chute 64 arranged.

  As shown in FIG. 3, the magazine can 62 has a plurality of holding holes 63 arranged in a circle. In each of the holding holes 63, the yarn feeding bobbin 21 to be supplied to the bobbin support portion 7 can be set in an inclined posture. Further, the magazine can 62 is configured to be intermittently rotationally driven by a bobbin supply device drive motor (drive source) 41 described later.

  Each holding hole 63 is formed to penetrate the magazine can 62. Each yarn feeding bobbin 21 stored in the holding hole 63 is received by a bobbin receiving plate 65 disposed below the magazine can 62 so as not to fall. The bobbin receiving plate 65 is fixed to the magazine holding unit 61 (that is, the bobbin receiving plate 65 does not rotate even when the magazine can 62 is driven to rotate). The bobbin receiving plate 65 is formed with a notch 65a having a size corresponding to one holding hole 63 (see FIG. 7 and the like).

  With the above configuration, the position of the notch 65a moves relative to the magazine can 62 by driving the magazine can 62 to rotate. Then, among the yarn feeding bobbins 21 accommodated in the magazine can 62, the yarn feeding bobbin 21 that is no longer supported by the bobbin receiving plate 65 at the position of the notch 65a falls downward. That is, the yarn feeder bobbins 21 can be supplied downward one by one by intermittently driving the magazine can 62.

  Further, a yarn end holding port (yarn end holding portion) 66 is formed at the upper end portion of the rotation shaft of the magazine can 62. The yarn end holding port 66 is connected to an appropriate negative pressure source via the hose 67 shown in FIG. 3, thereby generating a suction air flow at the yarn end holding port 66. When the operator newly sets the yarn supplying bobbin 21 in the holding hole 63, the yarn end of the yarn supplying bobbin 21 is sucked into the yarn end holding port 66 as shown in FIG. By holding the yarn end in advance in this way, it is not necessary to lead out the yarn end when replacing the yarn feeding bobbin 21, so that smooth yarn splicing can be performed.

  The guide chute 64 is arranged below the notch 65a, and is configured to slide down the yarn feeding bobbin that has fallen from the magazine can 62 and guide it to the bobbin support portion 7. The guide chute 64 includes an opening / closing portion 68 formed in a double-opening door shape, and the opening / closing portion 68 is configured to be able to open downward.

  In a state where the opening / closing portion 68 is closed, the upper surface of the opening / closing portion 68 abuts on the yarn supplying bobbin 21 falling from the magazine can 62, and the yarn supplying bobbin 21 reaches the bobbin support portion 7 obliquely below. invite. On the other hand, when the opening / closing part 68 is opened, the yarn supplying bobbin 21 can be discharged downward without being guided to the bobbin support part 7. Since the conveyor 81 is disposed below the opening / closing unit 68, the yarn feeding bobbin 21 discharged from the opening / closing unit 68 can be conveyed to the collection box by the conveyor 81.

  The bobbin supply device drive motor 41 is controlled by the control unit 6. The bobbin supply device drive motor 41 is configured to drive both the magazine can 62 and the opening / closing unit 68. Specifically, it is as follows. The control unit 6 controls the bobbin supply device drive motor 41 so as to rotate forward and backward by a predetermined angle. The driving force of the bobbin supply device drive motor 41 is transmitted to the rotation shaft of the opening / closing unit 68 via a pulley, a link mechanism, etc. (not shown). With this configuration, the bobbin supply device drive motor 41 can be driven from an open state to a closed state by rotating the bobbin supply device drive motor 41 in one direction by a predetermined angle. Further, by rotating the bobbin supply device drive motor 41 by a predetermined angle in the reverse direction, the opening / closing portion 68 can be driven from the closed state to the open state.

  On the other hand, an unillustrated ratchet mechanism having a stop latch is provided on the rotation shaft of the magazine can 62. The rotational driving force of the bobbin supply device drive motor 41 is transmitted to the ratchet mechanism via a pulley (not shown). With this configuration, the magazine can 62 can be rotated in one direction by a predetermined angle by rotating the bobbin supply device drive motor 41 in one direction by a predetermined angle. On the other hand, even if the bobbin supply device drive motor 41 is rotated in the reverse direction, the magazine can 62 is not rotationally driven by the ratchet mechanism. That is, the magazine can 62 can be intermittently driven by a predetermined angle in one direction.

  Then, as described above, the rotation of the magazine can 62 and the opening / closing operation of the opening / closing portion 68 are linked by driving the opening / closing portion 68 and the magazine can 62 by a common drive source (bobbin supply device drive motor 41). Can do. Specifically, when the magazine can 62 is rotated (when the yarn feeding bobbin is supplied to the bobbin support portion 7), the opening / closing portion 68 is closed, and at other times, the opening / closing portion 68 is opened. . Thereby, when the yarn feeding bobbin 21 is supplied from the magazine can 62, the yarn feeding bobbin 21 can be guided to the bobbin support portion 7 by the closed opening / closing portion 68. When the yarn feeding bobbin 21 does not need to be supplied, the opening / closing part 68 is open. For example, when the operator accidentally puts the yarn feeding bobbin into the holding hole 63 at the position where the notch 65a is located. Even if it exists, the said yarn feeding bobbin can be discharged | emitted below from the opening-and-closing part 68 of the open state, without guiding to the bobbin support part 7. FIG.

  Further, the magazine holder 61 is provided with a yarn gathering lever (yarn guide member) 31 and a yarn gathering lever driving motor 42 for driving the yarn gathering lever 31. The yarn shifting lever drive motor 42 is configured as a stepping motor and is controlled by the control unit 6.

  As shown in FIG. 3, the yarn pulling lever 31 has a thread hooking portion 70 bent in a V shape, and the yarn hooking portion 70 can hook the yarn. Then, by rotating the yarn gathering lever 31 with the yarn hooked on the yarn hooking portion 70, the yarn can be guided to the lower yarn catching position 90. As shown in FIG. 3, the yarn shifting lever 31 is configured in a shape that is divided into two upper and lower forks at the yarn hooking portion 70. When it is necessary to particularly distinguish the upper and lower yarn hooking portions 70, the upper yarn hooking portion and the lower yarn hooking portion are called and distinguished.

  The yarn gathering lever 31 can be rotated between a lever standby position and a yarn slackening position. Here, the “lever standby position” refers to the yarn hooking portion on the opposite side of the lower thread catching position 90 in a side view across the locus when the yarn feeding bobbin 21 slides from the magazine can 62 to the bobbin support portion 7. This is the position where 70 is located (the position in FIG. 8). Further, the “thread loosening position” refers to a position (position in FIG. 11) where the cutter introduction guide 37 is sandwiched between the upper yarn hooking portion and the lower yarn hooking portion of the yarn moving lever 31.

  Next, the configuration of the bobbin support portion 7 will be described. 4 to 6 are enlarged side views showing the configuration of the bobbin support portion 7. As shown in the figure, the bobbin support portion 7 includes a bobbin holding peg 9, a jump plate 45, and a bobbin support portion drive motor (drive source) 43.

  The bobbin holding peg 9 includes a first holding piece 46 and a second holding piece 47. In the bobbin holding peg 9, the first holding piece 46 and the second holding piece 47 are closed and overlapped (the state shown in FIGS. 4 and 5), and the first holding piece 46 and the second holding piece 47 are opened. The state (state shown in FIG. 6) can be realized. As shown in FIG. 6, when the bobbin holding peg 9 is opened, the first holding piece 46 and the second holding piece 47 are in close contact with the inside of the core tube 21a, so that the yarn feeding bobbin 21 comes off the bobbin holding peg 9. The yarn feeding bobbin 21 can be reliably held. The bobbin holding peg 9 is configured to hold the yarn feeding bobbin 21 in an upright state (the state shown in FIG. 6). In the following description, the state where the first holding piece 46 and the second holding piece 47 are opened (the state shown in FIG. 6) is referred to as a bobbin holding state.

  More specific description will be given below. The second holding piece 47 is fixed to the rotation shaft 49. The driving force of the bobbin support portion drive motor 43 is transmitted to the rotation shaft 49 via a pulley, a link mechanism, and the like. The bobbin support unit drive motor 43 is controlled by the control unit 6. The control unit 6 rotationally drives the rotating shaft 49 by driving the bobbin support unit driving motor 43 forward and backward, and the second holding piece 47 is inclined toward the front side of the apparatus (state shown in FIG. 4). It can be moved between the state of moving up toward the back side of the apparatus and standing upright (state of FIG. 6, bobbin holding state).

  The first holding piece 46 is supported so as to be rotatable relative to the rotation shaft 49 and is urged counterclockwise in FIG. 4 with respect to the second holding piece 47. By this urging force, the first holding piece 46 and the second holding piece 47 are closed and held in an overlapped state. In this state, when the rotation shaft 49 is rotationally driven by the bobbin support portion drive motor 43, the second holding piece 47 and the first holding piece 46 rotate integrally. However, the rotation of the first holding piece 46 is restricted by a stopper (not shown) so as not to incline toward the back side of the apparatus.

  That is, when the rotation shaft 49 is driven counterclockwise from the state of FIG. 4, until the middle, the first holding piece 46 and the second holding piece 47 rotate integrally, The first holding piece 46 stops in an upright state, and thereafter, only the second holding piece 47 rotates counterclockwise. As a result, as shown in FIG. 6, the first holding piece 46 and the second holding piece 47 can be opened (bobbin holding state).

  As shown in FIG. 6, the upper surface of the jump plate 45 is configured to contact the lower end portion of the core tube 21 a of the yarn feeding bobbin 21 into which the bobbin holding peg 9 is inserted. The jump plate 45 is configured to be able to be rotated from the “parallel position” shown in FIG. 6 to the “bounce up position” shown in FIG. The driving force of the bobbin support portion drive motor 43 is transmitted to the spring plate 45 via a pulley and a link mechanism. Thereby, the spring board 45 can be driven in conjunction with the bobbin holding peg 9. Specifically, as shown in FIG. 6, when the bobbin holding peg 9 is in the bobbin holding state, the jump plate 45 is configured to be in the horizontal position. And, the bobbin holding peg 9 is configured to jump up as the bobbin holding peg 9 rotates clockwise from the bobbin holding state.

  Next, in the automatic winder 1 configured as described above, a yarn guide method for guiding the newly supplied yarn of the yarn feeding bobbin 21 to a position where it can be captured by the lower yarn guide pipe 25 will be specifically described.

  First, the operation of discharging the emptied yarn feeding bobbin, that is, the bobbin discharging process will be described.

  When detecting that the yarn feeding bobbin is empty, the control unit 6 drives the bobbin support unit driving motor 43 to rotate the second holding piece 47 so as to be inclined toward the front side of the apparatus. Move. As a result, the bobbin holding peg 9 is closed and the spring plate 45 is rotated to the flip-up position (the state shown in FIGS. 4 and 7).

  Then, the lower end portion of the empty yarn supplying bobbin 210 is pushed obliquely upward by the jump plate 45, and the empty yarn supplying bobbin 210 comes out from the bobbin holding peg 9. At this time, since the opening / closing part 68 located on the front side of the bobbin support part 7 is in an open state, the empty yarn feeding bobbin 210 can be discharged toward the front side of the apparatus through the opened opening / closing part 68. . The discharged empty yarn feeding bobbin 210 is conveyed to the collection box by the conveyor 81.

  Next, an operation when supplying a new yarn supplying bobbin from the magazine can 62, that is, a bobbin supplying step will be described.

  When the bobbin discharging step is completed, the control unit 6 appropriately controls the bobbin support unit drive motor 43 to rotate the rotation shaft 49 and cut the tip of the bobbin holding peg 9 in the direction of the notch 65a (yarn supply). The bobbin falls in the direction of falling) (state shown in FIG. 5, peg standby state). In this state, as shown in FIG. 5, the first holding piece 46 and the second holding piece 47 are closed. In addition, the control unit 6 controls the yarn gathering lever drive motor 42 as appropriate so that the yarn gathering lever 31 stands by at the lever standby position.

  In this state, the controller 6 drives the bobbin supply device drive motor 41 by a predetermined angle in one direction. As a result, the opening / closing portion 68 is closed and the magazine can 62 is rotationally driven, and the yarn feeding bobbin 21 falls onto the guide chute 64. The yarn feeding bobbin 21 dropped on the guide chute 64 is guided obliquely downward by the closed opening / closing part 68 and reaches the bobbin support part 7. In the bobbin support portion 7, the bobbin holding peg 9 waiting at an angle is inserted into the core tube 21 a of the yarn feeding bobbin 21 that has been guided at an angle (the state shown in FIGS. 5 and 8).

  Next, an operation for changing the posture of the yarn feeding bobbin 21 from the oblique posture in FIG. 8 to the upright posture in FIG. 10, that is, a bobbin posture changing step will be described.

  When the bobbin supply process is completed, the control unit 6 controls the bobbin support unit drive motor 43 to drive the bobbin holding peg 9 to the bobbin holding state. Thereby, the yarn feeding bobbin 21 supplied in an oblique posture can be erected as shown in FIG. In addition, the first holding piece 46 and the second holding piece 47 are thereby opened, so that the yarn feeding bobbin 21 can be held firmly.

  Next, an operation for guiding the newly supplied yarn of the yarn supplying bobbin 21 to the lower yarn catching position 90, that is, a yarn shifting process will be described.

  When the bobbin is supplied, as shown in FIG. 8, the yarn is pulled between the yarn supplying bobbin 21 received by the bobbin holding peg 9 and the yarn end holding port 66. In this state, since the yarn path is greatly deviated from the lower thread catching position 90, the thread cannot be sucked and caught by the suction port 32 of the lower thread guide pipe 25. Therefore, by rotating the yarn gathering lever 31, the yarn passing between the yarn supplying bobbin 21 supported by the bobbin holding peg 9 and the yarn end holding port 66 is hooked on the yarn hooking portion 70, and the yarn Is pulled to the lower thread catching position 90. FIG. 10 shows a state when the yarn has been drawn to the lower yarn catching position 90. FIG.

  If only the point that the yarn is guided to the lower yarn catching position 90 is considered, for example, the yarn feeding step may be performed after the bobbin posture changing step is completed. However, when the bobbin posture changing step is performed alone, the yarn of the yarn supplying bobbin 21 is pulled obliquely, and there is a problem that yarn breakage frequently occurs.

  In order to explain this point in an easy-to-understand manner, first, the relationship between the yarn drawing direction from the yarn feeding bobbin and the ease with which yarn breakage will occur will be briefly described. The yarn feeding bobbin 21 is obtained by winding a yarn around a core tube 21a. Therefore, if the yarn feeding bobbin 21 can be rotationally driven around the axis in the direction in which the yarn is unwound, the yarn can be easily pulled out from the yarn feeding bobbin 21. However, in the yarn winding machine such as the automatic winder 1 according to the present embodiment, the yarn feeding bobbin 21 is not rotationally driven, so that there is a limitation in the direction of drawing the yarn from the yarn feeding bobbin 21.

  That is, when the yarn supplying bobbin 21 is fixed, if the yarn is pulled out in a direction deviating from the axial direction of the yarn supplying bobbin 21, the yarn is caught on the yarn supplying bobbin 21 itself. Pulling the thread will cause thread breakage. Therefore, in general, this type of yarn winding machine is configured to draw the yarn in the axial direction of the yarn feeding bobbin 21. Thereby, since the yarn is not caught on the yarn feeding bobbin 21, the yarn can be smoothly unwound without rotating the yarn feeding bobbin 21.

  Next, a description will be given with reference to FIG. FIG. 13 is a view showing a state where the posture of the yarn feeding bobbin 21 is upright without guiding the yarn with the yarn shifting lever 31 (the yarn guide will be described later). When the posture of the yarn feeding bobbin 21 is changed from the oblique posture to the upright posture, the distance between the surface of the yarn feeding bobbin 21 and the yarn end holding port 66 changes. The thread is pulled. When the yarn guide lever 31 does not guide the yarn, as shown in FIG. 13, the yarn is slanted between the yarn feeding bobbin 21 standing upright on the bobbin support portion 7 and the yarn end holding port 66. It becomes a stretched state. That is, if the yarn feeding bobbin 21 is erected without guiding the yarn, the yarn is pulled toward a position deviated from the extension line of the axis of the yarn feeding bobbin 21, so that yarn breakage is likely to occur. is there.

  Considering the above points, the control unit 6 of the present embodiment performs the yarn shifting by the yarn shifting lever 31 in accordance with the change in the posture of the yarn supplying bobbin 21 when the yarn supplying bobbin 21 stands upright from the oblique posture. (That is, the bobbin posture changing step and the yarn shifting step are performed in parallel).

  More specifically, it is as follows. When the bobbin posture changing process is started, the control unit 6 drives the yarn gathering lever driving motor 42 before and after this to start the yarn gathering (yarn feeding process) by the yarn gathering lever 31. Thus, the posture of the yarn supplying bobbin 21 is changed while the yarn is hooked by hooking the yarn hooking portion 70 of the yarn holding lever. In other words, the yarn path is guided by the yarn shifting lever 31 while the posture of the yarn supplying bobbin 21 is changed.

  As a result, as shown in FIG. 9, the yarn can be pulled out in the axial direction of the yarn feeding bobbin 21 even during the posture changing operation of the yarn feeding bobbin 21, so that yarn breakage is prevented and the yarn is pulled out as much as it is pulled. be able to.

  Next, the driving control of the yarn gathering lever 31 performed by the control unit 6 in the yarn gathering step will be described.

  The control unit 6 needs to appropriately control the timing at which the yarn feeding lever 31 starts to be driven, the driving speed, and the like according to the change in the posture of the yarn feeding bobbin 21. Here, “appropriately controlling” means that when changing the posture of the yarn supplying bobbin 21, the yarn hooking portion 70 is always controlled on the extension line of the axis of the yarn supplying bobbin 21. Say. By controlling the driving of the yarn feeding lever 31 in this way, the yarn can be pulled out in the axial direction of the yarn feeding bobbin 21 when the posture of the yarn feeding bobbin 21 is changed, so that yarn breakage can be prevented. On the other hand, when the yarn hooking portion 70 is removed from the extended line of the axis of the yarn supplying bobbin 21, the yarn of the yarn supplying bobbin 21 is pulled obliquely, and yarn breakage occurs.

  In this regard, the timing and speed at which the posture of the yarn feeding bobbin 21 changes depends on the size and shape of the core tube. For this reason, it is necessary to change the timing at which driving of the yarn gathering lever 31 is started, the driving speed of the yarn gathering lever 31, and the like according to the type of the core tube 21a. Here, how the speed and timing of the posture change of the yarn feeding bobbin 21 change depending on the type of the core tube 21a will be briefly described below.

  As shown in FIG. 5, when the first holding piece 46 and the second holding piece 47 are closed, there is a gap between the core tube 21 a of the yarn feeding bobbin 21 and the bobbin holding peg 9. Therefore, even if the control unit 6 starts to rotate the bobbin holding peg 9 from this state, the yarn feeding bobbin 21 does not change its posture immediately. The timing at which the yarn feeding bobbin starts to change the posture varies depending on the gap between the core tube 21a and the bobbin holding peg 9, that is, the size and shape of the core tube 21a. Further, if the size and shape of the core tube 21a are different, the amount of the first holding piece 46 and the second holding piece 47 that must be opened before the bobbin holding peg 9 comes into close contact with the inside of the core tube 21a is also different. That is, the timing at which the yarn feeding bobbin 21 is fixed in the upright posture differs depending on the size and shape of the core tube 21a. For the above reasons, the timing and speed at which the posture of the yarn feeding bobbin 21 changes depending on the type of the core tube 21a.

  Considering the above points, in the automatic winder 1 of the present embodiment, the control unit 6 can change the drive start timing, the drive speed, and the like of the yarn moving lever 31 according to the type of the core tube. It is configured. For example, setting data for appropriately controlling the yarn shifting lever 31 is prepared in advance for each type of core tube. This setting data includes, for example, setting items such as timing for starting driving of the yarn shifting lever driving motor 42 and the driving speed of the yarn shifting lever driving motor 42.

  When a change occurs in the winding state such as changing the type of the core tube 21a, the operator of the automatic winder 1 operates the operation input unit 10 provided in the machine base control device 3 so that the core tube 21a. Enter a setting value to specify the type of the. Then, in each winder unit 2, setting data corresponding to the type of the core tube 21 a is applied to the control unit 6 in accordance with the input setting value. Thereby, according to the kind of core tube 21a, the yarn raising lever 31 can be driven appropriately. That is, the yarn can be pulled out in the axial direction of the yarn supplying bobbin 21 when the posture of the yarn supplying bobbin 21 is changed regardless of the type of the core tube 21a. can do.

  In addition, since the conventional yarn winding machine does not include a drive source dedicated to the yarn gathering lever such as the yarn gathering lever driving motor, for example, the driving force of the bobbin support portion driving motor 43 is taken out by the link mechanism or the like and the yarn gathering device is used. I was driving the lever. That is, in the conventional yarn winding machine, the yarn shifting lever is driven by a drive source common to other configurations. For this reason, in the conventional yarn winding machine, it is difficult to finely adjust the driving of the yarn shifting lever 31 independently, and it is not possible to cope with the difference in the type of the core tube, and when changing the posture of the yarn feeding bobbin There were occasions when thread breakage occurred frequently.

  In this regard, in the automatic winder 1 of the present embodiment, a dedicated drive source (yarn-feeding lever driving motor 42) is provided in the yarn-feeding lever 31 separately from the bobbin supply device driving motor 41 and the bobbin support portion driving motor 43. Therefore, the control unit 6 can finely and flexibly control the driving of the yarn moving lever 31. With this configuration, it is possible to perform drive control of the yarn shifting lever 31 according to the type of the core tube.

  Next, an operation of loosening the lower thread in order to cause the lower thread guide pipe 25 to suck and capture the lower thread reliably, that is, a thread loosening process will be described.

  When the bobbin posture changing step (and the yarn pulling step) is completed and the yarn feeding bobbin 21 is in an upright state (the state shown in FIG. 10), the control unit 6 stops driving the bobbin holding peg 9 and also performs the yarn pulling. The lever 31 is rotated to the thread loosening position. As a result, the yarn hooking portion 70 pulls the yarn of the yarn supplying bobbin 21, and the yarn is further pulled out from the yarn supplying bobbin 21. As a result, the yarn hooking portion 70 comes off from the extension line of the axis of the yarn supplying bobbin 21, but the lower yarn guide 38 is disposed immediately above the yarn supplying bobbin 21, and the lower yarn guide 38. Therefore, the yarn can be pulled out in the axial direction of the yarn feeding bobbin 21 (see FIG. 11). Therefore, if the yarn feeding bobbin 21 is fixed in an upright state (after the bobbin posture changing process is completed), the yarn breaks even if the yarn hooking portion 70 is removed from the extension line of the axis of the yarn feeding bobbin 21. There is no end to it. In this way, the lower thread guide 38 and the yarn shifting lever 31 interact with each other, so that the thread can be pulled out from the yarn feeding bobbin 21, so that the thread (lower thread) on the yarn feeding bobbin 21 side is loosened. be able to.

  As shown in FIG. 11, the yarn moving lever 31 rotates so as to sandwich the cutter introduction guide 37 and the cutter 36 between the upper yarn hooking portion and the lower yarn hooking portion. As a result, the lower thread hooked on the thread hook 70 is introduced into the cutter introduction guide 37, and the thread is guided to a position where it can be cut by the cutter 36. In this state, as shown in FIG. 11, the yarn path is bent by the yarn shifting lever 31, the cutter introduction guide 37, and the lower yarn guide 38.

  Next, an operation of sucking and catching the lower thread on the yarn feeding bobbin 21 side by the lower thread guide pipe 25, that is, a thread end catching step will be described.

  When the yarn slackening step is completed, the controller 6 rotates the lower thread guide pipe 25 around the shaft 33, and moves the suction port 32 to the vicinity of the lower thread catching position 90. Subsequently, the controller 6 operates the cutter 36 while cutting through the suction port 32 to cut the yarn. As described above, the yarn path is bent immediately before the yarn is cut. Therefore, by operating the cutter 36 in this state (the state shown in FIG. 11) to cut the yarn, the yarn (lower yarn) between the cutter 36 and the yarn feeding bobbin 21 can be in a loose state. Then, the slackened lower thread is sucked and captured by the suction port 32 that performs suction at the lower thread capturing position 90 (state of FIG. 12).

  As described above, when the lower yarn is sucked and captured by the lower yarn guide pipe 25, the lower yarn is loosened, so that the yarn end of the lower yarn can be reliably sucked and captured by the suction port 32. Here, if the amount of loosening the yarn is small, the length of the yarn end sucked into the lower yarn guide pipe 25 is shortened, so that there is a case where the yarn end cannot be captured. Therefore, in order to reliably capture the lower thread, it is necessary to control the driving of the yarn shifting lever 31 so that the amount of slackening of the thread becomes a certain level or more.

  The amount of loosening of the yarn can be adjusted by controlling the driving amount of the yarn shifting lever 31. That is, the lower the thread can be loosened, the more the thread hooking portion 70 is moved to the left side of FIG. 11 (the more the thread is pulled by the thread shifting lever 31). However, even if the driving amount of the yarn shifting lever 31 is the same, if the yarn type is different, the amount of loosening of the yarn is also different. For example, in the case of a highly stretchable yarn, even if the yarn is pulled by the yarn shifting lever 31, the yarn itself is stretched, so that the actual amount of slackening is reduced.

  Considering the above points, in the automatic winder 1 of the present embodiment, the control unit 6 is configured to be able to change the driving amount of the yarn shifting lever 31 according to the type of yarn. For example, setting data for controlling the driving amount of the yarn shifting lever drive motor 42 is prepared in advance for each type of yarn. For example, the setting data is set so that the yarn shifting lever 31 is moved more greatly as the yarn has higher stretchability.

  The operator of the automatic winder 1 operates the operation input unit 10 provided in the machine base control device 3 when a change occurs in the winding state such as changing the yarn type of the yarn supplying bobbin 21 to supply the yarn. A setting value for designating the thread type of the thread bobbin 21 is input. Then, in each winder unit 2, setting data corresponding to the type of yarn is applied to the control unit 6 in accordance with the input setting value. Thereby, irrespective of the kind of thread | yarn, the quantity which loosens a thread | yarn can be made more than fixed. Therefore, the lower thread guide pipe 25 can reliably suck and capture the lower thread.

  As described above, in the conventional yarn winding machine, since the yarn gathering lever is driven by a drive source common to other configurations, the yarn gathering lever cannot be controlled independently. Therefore, in this conventional yarn winding machine, a stopper is provided to regulate the drive amount of the yarn shifting lever, and when changing the type of yarn, this stopper is changed to adjust the amount of loosening of the yarn. Was. In this regard, in this embodiment, the yarn gathering lever 31 is driven by a yarn gathering lever driving motor 42 which is a dedicated drive source, and the yarn gathering lever driving motor 42 is configured as a stepping motor. The stepping motor can easily position the rotor without using a stopper or the like. Therefore, since the stopper can be omitted by the configuration of the present embodiment, it is not necessary to change the stopper every time the type of yarn is changed, and the burden on the operator can be reduced.

  Further, in the case where the rotation amount of the yarn gathering lever is limited by the stopper as in the conventional yarn winding machine, the control unit cannot determine whether or not the yarn gathering lever has been turned to an appropriate position. Therefore, in the conventional yarn winding machine, the control unit starts the lower yarn catching process after a sufficient time has elapsed for the yarn shifting lever to rotate to the position regulated by the stopper. In this regard, according to the present embodiment, since the yarn gathering lever 31 is positioned in the control unit 6, when the yarn gathering lever 31 is rotated to an appropriate position, the process immediately moves to the lower yarn catching step. Can do. Therefore, with the configuration of the present embodiment, it is possible to reduce the time required for the yarn gathering process and efficiently generate a package.

  When the yarn end catching step is completed, the control unit 6 rotates the lower thread guide pipe 25 to guide the lower thread to the yarn joining device 14. In the yarn joining device 14, the lower yarn and the upper yarn on the package 29 side are joined, so that the yarn can be made continuous between the package 29 and the yarn feeding bobbin 21. By restarting the rotational drive of the package 29 in this state, the yarn can be unwound from the yarn supplying bobbin 21 and wound on the package 29.

  As described above, the automatic winder 1 according to this embodiment includes the bobbin support portion 7, the lower thread guide pipe 25, the bobbin supply device 60, the bobbin supply device drive motor 41, and the bobbin support portion drive motor 43. , A yarn end holding port 66, a yarn shifting lever 31, and a control unit 6. The bobbin support part 7 supports the yarn feeding bobbin 21. The lower thread guide pipe 25 captures the thread of the yarn feeding bobbin 21. The bobbin supply device 60 supplies the yarn feeding bobbin 21 to the bobbin support portion 7. The bobbin supply device drive motor 41 drives the bobbin supply device 60. The bobbin support part drive motor 43 drives the bobbin support part 7. The yarn end holding port 66 is provided in the bobbin supply device 60 and holds the yarn end of the yarn supplying bobbin 21. The yarn gathering lever 31 hooks the yarn passing between the yarn feeding bobbin 21 supported by the bobbin support portion 7 and the yarn end holding port 66 and guides the yarn to a position where the lower yarn guide pipe 25 can receive the yarn. To do. The control unit 6 controls driving of the yarn moving lever 31. The yarn gathering lever 31 is driven by a yarn gathering lever driving motor 42 which is a dedicated driving means provided separately from the bobbin supply device driving motor 41 and the bobbin support portion driving motor 43.

  That is, in the conventional yarn winding machine, since the yarn gathering member is driven by the driving means common to other configurations, it is difficult to control the yarn gathering member independently and flexibly. In this respect, by driving the yarn gathering lever 31 with the dedicated driving means as described above, the driving of the yarn gathering lever 31 can be controlled independently, so that the driving amount and the driving speed of the yarn gathering lever 31 are controlled. It becomes possible to change flexibly as necessary. As a result, the yarn can be properly guided, so that the yarn end can be reliably captured by the lower yarn guide pipe 25 while preventing yarn breakage.

  Further, the automatic winder 1 of the present embodiment includes a lower thread guide 38 that interacts with the yarn shifting lever 31 to loosen the lower thread.

  By slackening the lower thread in this manner, it is possible to easily catch the yarn end by the lower thread guide pipe 25.

  In the automatic winder 1 of the present embodiment, the yarn shifting lever drive motor 42 is a stepping motor.

  That is, the stepping motor can control the position and speed with a simple circuit configuration, and thus is particularly suitable as a drive source for the yarn shifting lever 31. In particular, by using a stepping motor as a drive source, the yarn shifting lever 31 can be easily positioned, so that a stopper or the like for the positioning becomes unnecessary.

  Further, the automatic winder 1 of the present embodiment includes an operation input unit 10 capable of inputting a set value. Then, the control unit 6 can change the timing at which the yarn gathering lever 31 starts to be driven and the driving speed of the yarn gathering lever 31 according to the set value set by the operation input unit 10.

  That is, when the posture of the yarn feeding bobbin 21 is changed, the speed and timing at which the posture changes varies depending on the size and shape of the core tube 21a. Therefore, if the drive speed and drive timing of the yarn feeding lever 31 can be changed according to the set value as described above, the yarn feeding lever 31 can be driven in accordance with the posture change of the yarn feeding bobbin 21. , Yarn breakage can be prevented.

  Further, in the automatic winder 1 of the present embodiment, the control unit 6 can change the driving amount of the yarn moving lever 31 according to the set value input by the operation input unit 10.

  For example, if the stretchability of the yarn is different, the length of the yarn actually pulled out from the yarn feeding bobbin 21 is different even if the yarn shifting lever 31 is moved by the same distance. Therefore, if the driving amount of the yarn shifting lever 31 can be changed according to the set value as described above, the length of the yarn drawn from the yarn supplying bobbin can be made constant regardless of the type of yarn. It becomes.

  In addition, the yarn guiding method in the present embodiment includes a bobbin supplying step, a bobbin posture changing step, and a yarn shifting step. In the bobbin supplying step, the yarn supplying bobbin 21 is supplied to the bobbin support portion 7. In the bobbin posture changing step, the posture of the yarn supplying bobbin 21 supplied to the bobbin support portion 7 is changed to a posture capable of unwinding the yarn from the yarn supplying bobbin 21 (upright posture). In the yarn gathering step, the yarn in the yarn feeding bobbin 21 is hooked on the yarn gathering lever 31 and the yarn gathering lever 31 is driven to guide the yarn to the lower yarn catching position 90. Further, the yarn shifting process is performed in parallel with the bobbin posture changing process. In the yarn gathering step, the yarn gathering lever 31 is driven so that the portion (yarn catching portion 70) where the yarn is caught on the yarn gathering lever 31 is on the extension line of the axis of the yarn feeding bobbin 21. Control.

  As described above, when the posture of the yarn supplying bobbin 21 is changed, the yarn can be pulled out in the axial direction of the yarn supplying bobbin 21 by guiding the yarn by the yarn shifting lever 31. Thereby, yarn breakage when changing the posture of the yarn feeding bobbin 21 can be prevented, and a high-quality package can be formed.

  Further, the yarn guiding method of the present embodiment includes a yarn loosening step of loosening the yarn by further driving the yarn gathering member after the yarn gathering step. In the yarn loosening step, the driving of the yarn shifting lever 31 is controlled so that the length of the yarn drawn from the yarn feeding bobbin 21 is constant regardless of the type of yarn.

  For example, if the stretchability of the yarn is different, the length of the yarn that is actually pulled out from the yarn feeding bobbin is different even if the yarn shifting lever 31 is moved by the same distance. This will be described in more detail as follows. That is, since the yarn having high stretchability contracts when the yarn is cut by the cutter 36, the length of the yarn drawn out from the yarn feeding bobbin 21 is shorter than that of the yarn having low stretchability. Therefore, there is a case where the yarn catching by the lower yarn guide pipe 25 fails. Therefore, in the case of a yarn having a large stretchability, it is necessary to increase the amount of loosening as compared with a yarn having a small stretchability. In this regard, by changing the driving amount of the yarn shifting lever 31 according to the type of yarn as described above, the length of the yarn drawn out from the yarn feeding bobbin 21 can be made constant regardless of the type of yarn. It becomes possible. Thereby, since the yarn end of the yarn feeding bobbin 21 can be reliably captured in the subsequent process, the package can be manufactured efficiently.

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

  In the above embodiment, setting data for controlling the yarn shifting lever drive motor 42 is prepared in advance for each type of the core tube and each type of yarn, and the setting for designating the type of the core tube and the type of the yarn. The configuration has been described as inputting a value. However, instead of this, or in addition to this, an operation input unit may be provided for each unit so that the operator can manually adjust the setting in accordance with the winding condition such as the type of the core tube and the type of yarn. In this case, for example, a configuration in which a setting value for selecting a relative setting can be input, such as “increase the driving speed of the yarn gathering lever” or “lower the driving speed of the yarn gathering lever”. Is preferred. According to this configuration, for example, when the yarn breakage occurs frequently at the time of replacing the yarn feeding bobbin, the driving speed of the yarn shifting lever can be adjusted intuitively. Of course, it may be configured such that setting values such as the driving speed, the driving start timing, and the driving amount of the yarn shifting lever can be directly input as numerical values.

  The yarn shifting lever drive motor 42 is a stepping motor, but it goes without saying that a servo motor other than the stepping motor may be used. However, the stepping motor is particularly suitable as a drive source for the yarn shifting lever because it has a feature that it can be controlled easily and can be positioned easily.

  In the above-described embodiment, the driving speed and the driving start timing of the yarn moving lever 31 are changed according to the type of the core tube 21a. However, the driving speed and the driving start timing may be changed only. good. Even if only one of the configurations is changed, the occurrence of yarn breakage at the time of changing the posture of the yarn feeding bobbin can be reduced compared to a configuration in which the driving speed and driving start timing of the yarn shifting lever 31 are fixed. it can. However, from the viewpoint of appropriately controlling the yarn shifting lever 31 according to the change in the posture of the yarn feeding bobbin 21, both the driving speed and the driving start timing of the yarn shifting lever 31 are changed according to the type of the core tube 21a. It is preferable to adopt a configuration to

  The configuration of the present invention can be applied not only to an automatic winder but also to other types of yarn winding machines.

1 Automatic winder (yarn winding machine)
6 Control unit 7 Bobbin support unit 10 Operation input unit 21 Yarn supply bobbin 25 Lower thread guide pipe (capture guide unit)
31 Yarn-feeding lever (thread guide member)
42 Yarn-feeding lever drive motor 60 Bobbin supply device (bobbin supply unit)
66 Thread end holding port (Thread end holding part)

Claims (7)

A bobbin support for supporting the yarn feeding bobbin;
A catching guide for catching the yarn of the yarn feeding bobbin;
A bobbin supply part for supplying a yarn feeding bobbin to the bobbin support part;
A drive source that drives both or any one of the bobbin support section and the bobbin supply section;
A yarn end holding unit that is provided in the bobbin supply unit and holds a yarn end of the yarn supplying bobbin;
A yarn guide member for hooking a yarn passing between the yarn feeding bobbin supported by the bobbin support portion and the yarn end holding portion and guiding the yarn to a position where the catching guide portion can receive the yarn;
A control unit for controlling the driving of the yarn guide member;
With
The yarn winder is characterized in that the yarn guide member is driven by dedicated drive means provided separately from the drive source. The yarn winding machine according to claim 1,
A yarn winding machine comprising a guide member that interacts with the yarn guide member to loosen the yarn. The yarn winding machine according to claim 1 or 2,
The yarn winding machine characterized in that the dedicated drive means is a stepping motor. A yarn winding machine according to any one of claims 1 to 3,
Equipped with an operation input unit that can input set values,
The control unit can change at least one of timing for starting driving the yarn guide member and / or a driving speed of the yarn guide member according to a set value set by the operation input unit. Characteristic yarn winding machine. A yarn winding machine according to any one of claims 1 to 3,
Equipped with an operation input unit that can input set values,
The control unit is capable of changing the drive amount of the yarn guide member in accordance with a set value set by the operation input unit. A yarn guiding method for guiding a yarn of a yarn feeding bobbin to a yarn winding machine,
A bobbin supplying step for supplying the yarn supplying bobbin to the bobbin support;
A bobbin posture changing step for changing the posture of the yarn supplying bobbin supplied to the bobbin support to a posture capable of unwinding the yarn from the yarn supplying bobbin;
A yarn guide step of guiding the yarn to a predetermined position by hooking the yarn of the yarn feeding bobbin onto the yarn guide member and driving the yarn guide member;
Including
The yarn guiding step is performed in parallel with the bobbin posture changing step,
In the yarn guiding step, the yarn guiding member is controlled so that a portion where the yarn is hooked on the yarn guiding member is on an extension line of an axis of the yarn supplying bobbin. . The yarn guiding method according to claim 6, wherein
After the yarn guiding step, including a yarn loosening step of loosening the yarn by further driving the yarn guiding member,
In the yarn loosening step, the yarn guide method controls the drive of the yarn guide member so that the length of the yarn drawn from the yarn feeding bobbin is constant regardless of the type of yarn.

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