TWI766186B - silk winding machine - Google Patents

Abstract

In order to appropriately guide the wire to the wire holding portion by the clamp cutter when the completed package is replaced with a new bobbin. The clamp cutter (50) performs at least a first movement and a second movement. The first movement is to cut and hold the yarn (Y) between the yarn feeding part (11) and the package (P), and then pull out the yarn from the yarn feeding part (11) along the moving component to the rear. The second movement is after the first movement, in order to guide the grasped wire (Y) to the wire holding part (28) provided in the bobbin holder (22), and move forward along the Move in the direction of the moving component of the square. The control unit (14) reverses the thread feeding roller (16) after the second movement of the clamp cutter (50) starts until the thread (Y) is held by the thread holding unit. (Y) The relaxation is removed.

Description

silk winding machine

The present invention relates to a wire winder which can automatically exchange a completed package for a new bobbin.

For example, the yarn winding machine described in Patent Document 1 is configured to wind the yarn supplied from the yarn feeder around a bobbin to form a package. In this filament winding machine, a series of actions from exchanging the completed package for a new bobbin to starting the winding of the filament on the new bobbin has been automated. Specifically, when the package is completed, the yarn between the yarn feeder and the package is cut with a cutter, and the yarn on the yarn feeder side is sucked and caught by the yarn catching tube. Next, after the completed package is replaced with a new bobbin, the wire sucked and caught by the wire catching tube is handed over to the punch arm, and the punch arm is moved to the vicinity of the bobbin holder. This can be hung on the bobbin holder. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-24438

[Problems to be Solved by Invention]

However, according to the structure in which the yarn is sucked and captured by the yarn capturing tube as in Patent Document 1, there is a problem that the yarn is consumed wastefully because the yarn is sucked, and a suction device must be used, which increases the cost. In order to avoid these problems, the inventors of the present application employ a structure in which a clamp cutter (clamp cutter) is used instead of the wire catching tube, and the wire is cut and held.

However, in the case of using the structure of the clamp cutter, the following new problems occur. After the package is completed, when the wire between the wire feeder and the package is cut and held by the clamp cutter, the clamp cutter moves in the direction of approaching the bobbin holder. Next, the yarn is cut, and the gripping cutter that holds the yarn on the yarn feeder side is withdrawn in the direction away from the bobbin holder in order to avoid interference with the re-installed bobbin. At this time, the yarn held by the clamp cutter is stretched, and the yarn is pulled out from the yarn feeder. Then, in order to guide the wire to the wire holding part provided in the bobbin holder, the clamp cutter is moved again in the direction of approaching the bobbin holder. At this time, there is a possibility that the wire drawn from the wire feeding part just now loosens, and the wire cannot be properly guided to the wire holding part.

In view of the above problems, an object of the present invention is to appropriately guide the wire to the wire gripping portion by the clamp cutter when the completed package is replaced with a new bobbin. [Technical means to solve problems]

The yarn winding machine of the present invention has a winding section that winds the yarn supplied from the yarn feeding section on a bobbin to form a package, and can automatically replace the completed package with a new bobbin. The yarn winding machine is characterized in that it is provided with a bobbin holder, a clamp cutter, a thread tension adjusting part and a control part, the bobbin holder rotatably supports the bobbin, the clamp cutter When the package is replaced with a new bobbin, the breaker cuts the yarn between the yarn feeder and the package, holds the yarn on the side of the yarn feeder, and cuts the held yarn. Guided to the wire holding part formed in the bobbin holder or the bobbin, the wire tension adjusting part can perform a tensioning operation to remove the slack of the wire held by the clamp cutter and loosen the wire For the loosening operation, the control unit controls at least the operation of the thread tension adjusting unit, and the clamp cutter is configured to perform at least a first movement and a second movement, and the first movement is connected with the thread feeding unit and the thread feeding unit. After the yarn between the packages is cut and held, the yarn is pulled out from the yarn feeder along the moving component on the side of the orthogonal direction perpendicular to the axial direction of the bobbin holder. The movement, the second movement, is a movement in a direction having a movement component to the other side of the orthogonal direction in order to guide the grasped wire to the wire holding portion after the first movement, the above-mentioned The control unit causes the thread tension adjusting unit to perform the tensioning operation after the gripping cutter starts the second movement until the thread is gripped by the thread gripping unit.

In the present invention, when the completed package is replaced with a new bobbin, the gripper cutter performs at least the first movement and the second movement after cutting and holding the wire, and guides the wire to the Wire handle. In the first movement, the clamp cutter is moved in a direction having a movement component to one side of the orthogonal direction, and the wire is pulled out from the wire feeder. Therefore, when the clamp cutter is moved in a direction having a movement component to the other side of the orthogonal direction in the second movement, the yarn is loosened. Therefore, in the present invention, after the second movement of the grip cutter is started, until the yarn is gripped by the yarn gripping portion, the yarn slack is removed by causing the yarn tensioning portion to perform a tensioning operation. Therefore, the problem that the wire cannot be properly guided to the wire holding portion due to the slack of the wire can be solved, whereby the clamp cutter can appropriately guide the wire to the wire holding portion.

In this invention, it is preferable that the said control part makes the said thread tension adjustment part perform the said tension|tensile_strength operation|movement while the said clamp cutter performs the said 2nd movement.

The timing when the thread tension adjusting part is tensioned can also be set after the end of the second movement of the clamp cutter. However, in this case, during the second movement of the clamp cutter, the loose wire may be caught by other members, and the wire guide to the wire holding portion may fail. In this regard, according to the above-described configuration, the slack of the wire can be removed during the second movement of the clamp cutter, and the wire can be surely guided to the wire holding portion by the clamp cutter.

In the present invention, it is preferable that the clamp cutter is configured to cut the thread between the thread feeder and the package after the package is moved in the direction in which the thread is drawn out from the thread feeder. For cutting and holding, the control unit causes the thread tension adjusting unit to perform the loosening operation after the package is moved in the direction in which the thread is pulled out from the thread feeding unit until the thread is cut by the clamp cutter. start the action.

When the package moves in the direction in which the yarn is pulled out from the yarn feeder, the tension of the yarn between the yarn feeder and the package becomes too large. Doubt to let the wire escape before holding the cutter to hold the wire. In this regard, according to the above-described configuration, the wire tension can be reduced before the wire is cut by the clamp cutter, and the wire by the clamp cutter can be securely held.

In this invention, it is preferable that the said control part makes the said thread tension adjustment part perform the said loosening operation|movement while the said clamping cutter performs the said 1st movement.

In the first movement, when the clamp cutter moves in the direction in which the thread is pulled out from the thread feeder, there is a possibility that the tension of the thread becomes too large and the thread is detached from the clamp cutter. In this regard, according to the above-mentioned configuration, since the tension of the wire during the first movement of the clamp cutter can be reduced, it is possible to prevent the wire from being detached from the clamp cutter during the first movement.

In the present invention, it is preferable that the clamp cutter is configured to further perform a third movement after cutting and holding the wire between the wire feeder and the package and before the Before the second movement, the control unit moves along the axial direction in the direction in which the thread is drawn from the thread feeder, and the control unit controls the thread tension adjustment unit during the third movement of the clamp cutter. Perform the aforementioned release action.

In the third movement, when the clamp cutter moves in the direction in which the thread is pulled out from the thread feeder, there is a possibility that the tension of the thread becomes too large and the thread is detached from the clamp cutter. In this regard, according to the above-mentioned configuration, the tension of the wire during the third movement of the clamp cutter can be reduced, so that the wire can be prevented from being detached from the clamp cutter during the third movement.

In the present invention, it is preferable that a tension detection unit for detecting the tension of the thread is arranged between the thread feeding unit and the winding unit in the thread traveling direction, and the control unit starts from the clamp cutter. During the period after the second movement is performed until the yarn is gripped by the yarn gripping portion, the operation of the yarn tension adjusting portion is controlled so that the tension detected by the tension detecting portion is maintained at or above a predetermined first threshold value .

In the case of adopting such a configuration, as long as the first threshold value is appropriately set, it is possible to maintain a state in which the yarn is not loosened during the second movement of the clamp cutter. Therefore, the wire can be surely guided to the wire holding part by the clamp cutter.

In the present invention, it is preferable that the control unit causes the tension detection unit to detect the tension detection unit during a period from when the gripper cutter starts to perform the second movement until the thread is gripped by the thread gripping unit. The operation of the thread tension adjusting portion is controlled so that the tension is maintained below a predetermined second threshold value larger than the first threshold value.

During the second movement of the clamp cutter, if only the thread tension adjusting unit is controlled so that the tension of the thread is maintained at or above the first threshold value, the tension of the thread becomes too large and the thread is detached from the clamp cutter. doubt. In this regard, as described above, by appropriately setting the upper limit of the tension of the wire during the second movement of the clamp cutter, that is, the second threshold value, it is possible to prevent the wire from being cut from the clamp during the second movement. breaker disengaged.

In the present invention, it is preferable that the clamp cutter is configured to cut the yarn between the yarn feeder and the package after the package is moved in the direction in which the yarn is drawn out from the yarn feeder. For cutting and holding, the control unit controls the tension detection unit to cut the thread after the package is moved in the direction in which the thread is pulled out from the thread feeder until the thread is cut by the clamp cutter. The thread tension adjusting portion performs the loosening operation so that the detected tension becomes equal to or less than a predetermined third threshold value.

When the package moves in the direction in which the yarn is pulled out from the yarn feeder, the tension of the yarn between the yarn feeder and the package becomes too large. Doubt to let the wire escape before holding the cutter to hold the wire. In this regard, in the case of the above-described configuration, as long as the third threshold value is appropriately set, the tension of the thread can be reduced before the thread is cut by the clamp cutter, so that the clamp cutter can be used to reduce the tension of the thread. The control of the silk is carried out surely.

In the present invention, it is preferable that the control unit controls the tension detected by the tension detection unit to be kept below a predetermined fourth threshold value while the clamp cutter is performing the first movement. The action of the aforementioned thread tension adjusting part.

In the first movement, when the clamp cutter moves in the direction in which the thread is pulled out from the thread feeder, there is a possibility that the tension of the thread becomes too large and the thread is detached from the clamp cutter. In this regard, in the case of the above-described configuration, as long as the fourth threshold value is appropriately set, the tension of the wire during the first movement of the clamp cutter can be reduced, so that the wire can be prevented from being released from the clamp during the first movement. Disengage the disconnector.

In the present invention, it is preferable that the clamp cutter is configured to further perform a third movement after cutting and holding the wire between the wire feeder and the package and before the Before the second movement, the control unit moves along the axial direction in the direction in which the wire is pulled out from the wire feeding unit, and the control unit causes the tension force to be applied during the third movement of the clamp cutter. The operation of the thread tension adjusting unit is controlled so that the tension detected by the detection unit is maintained below the fourth threshold value.

In the third movement, when the clamp cutter moves in the direction in which the thread is pulled out from the thread feeder, there is a possibility that the tension of the thread becomes too large and the thread is detached from the clamp cutter. In this regard, in the case of adopting the above-mentioned configuration, as long as the fourth threshold value is appropriately set, the tension of the wire during the third movement of the gripping cutter can be reduced, so that the wire can be prevented from being released from the wire during the first movement. The clamp cutter disengages.

In the present invention, it is preferable that a forward and reverse rotatable feed roll is disposed between the feed portion and the winding portion in the yarn traveling direction, and the feed roll functions as the yarn tension adjustment portion.

In many cases, such a feed roller is originally installed in the yarn winding machine. Therefore, by using the feed roller as the yarn tension adjusting part, it is not necessary to add a new device, and the cost can be reduced.

In the present invention, preferably, the wire gripping portion includes a support portion that supports an end portion of the bobbin in the axial direction, and an abutment position capable of abutting with the support portion and from the axial direction from the support portion. The movable portion that moves between the separated positions from which the support portion is separated, in the state where the movable portion is located at the separation position, after arranging the wire in the gap between the movable portion and the support portion, the movable portion is moved to the abutting portion after the wire is arranged. Hold the wire in position.

In this way, the present invention, which can remove the slack of the wire, is particularly effective when the wire held by the clamp cutter is guided to a narrow gap.

(Construction of Rewinder) The structure of the rewinding machine 1 (the yarn winding machine of the present invention) of the present embodiment will be described with reference to the drawings. FIG. 1 is a schematic view of the rewinder 1 of the present embodiment viewed from the front. FIG. 2 is a diagram showing the electrical structure of the rewinder 1 of the present embodiment. Let the up-down direction and the left-right direction shown in FIG. 1 be the up-down direction and the left-right direction of the rewinding machine 1, respectively. Let the direction orthogonal to both the up-down direction and the left-right direction (the direction perpendicular to the paper surface of FIG. 1 ) be the front-rear direction. Let the direction in which the yarn Y travels be the yarn traveling direction.

As shown in FIG. 1 , the rewinding machine 1 includes a table 10 , a wire feeding part 11 , a winding part 12 , a bobbin supplying device 13 , a control part 14 , and the like. The rewinding machine 1 unwinds the yarn Y from the yarn feeding package Ps provided in the yarn feeding section 11 , and winds the unwound yarn Y around the bobbin B at the winding section 12 to form the package P. The rewinding machine 1 is for neatly rewinding the yarn Y wound on the yarn feeding package Ps, or forming it into a package P of a desired density.

The yarn feeding part 11 is provided in the lower part of the longitudinal machine table 10 and supplies the yarn Y to the winding part 12 . The yarn feeding section 11 supports the yarn feeding package Ps in a state in which the yarn Y can be unwound from the yarn feeding package Ps.

Between the yarn feeding section 11 and the winding section 12 in the yarn traveling direction, the yarn guide 15, the yarn feeding roller 16, the yarn guide 17, the tension applying device 18, and the tension detection device are arranged in this order from the upstream side. sensor 19. The yarn Y unwound from the yarn feeding package Ps is supplied to the winding section 12 via the yarn guide 15 , the yarn feeding roller 16 , the yarn guide 17 , the tension applying device 18 , and the tension detecting sensor 19 .

The wire guides 15 and 17 are guides for defining the passage of the wire, and are arranged on, for example, an extension of the central axis of the wire feed package Ps. The feed roller 16 (the thread tension adjusting portion of the present invention) is configured to be capable of forward and reverse rotation by, for example, a roller drive motor 41 (refer to FIG. 2 ) including a stepper motor capable of forward and reverse rotation. The roller drive motor 41 is controlled by the control unit 14 . When the yarn feed roller 16 is rotated forward in the direction of the arrow indicated by the solid line in FIG. 1 (the loosening operation of the present invention), the yarn Y can be fed to the downstream side in the yarn traveling direction. On the other hand, if the yarn feeding roller 16 is reversed in the direction of the arrow indicated by the broken line in FIG. 1 (the tensioning operation of the present invention), the yarn Y can be stretched to the upstream side in the yarn traveling direction.

The tension imparting device 18 is a device for imparting tension to the yarn Y. The tension applying device 18 is configured to apply tension to the yarn Y by sandwiching the yarn Y in progress. The tension detection sensor 19 detects the tension of the wire Y between the wire feeding part 11 and the winding part 12 in the direction of the wire travel. The tension of the wire Y detected by the tension detection sensor 19 is sent to the control unit 14 . When the wire Y is moved laterally by the traverse device 23 described later, the tension detection sensor 19 functions as a traverse fulcrum.

The winding part 12 is provided in the upper part of the machine table 10, and is used for winding the yarn Y supplied from the yarn feeding part 11 around the bobbin B to form the package P. The winding section 12 includes a pair of left and right bracket arms 21, a pair of left and right bobbin holders 22, a traverse device 23, a touch roller 24, and the like.

Figures 3(a) and (b) are a front view and a side view showing the support structure of the package P. First, the structure of the bracket arm 21 and the bobbin holder 22 will be described with reference to FIG. 3 . The bracket arms 21 are two arm-shaped members arranged in the left-right direction, and the package P (the bobbin B) is rotatably supported by the pair of left and right bracket arms 21 . Specifically, bobbin holders 22 are provided at the front ends of the respective bracket arms 21 , and the package P (bobbin B) is rotatably supported by the pair of left and right bobbin holders 22 .

The carriage arm 21 is configured to be swingable about a swing shaft 21 a extending in the left-right direction by a carriage drive motor 42 (see FIG. 2 ). The carriage drive motor 42 is controlled by the control unit 14 . By swinging the carriage arm 21, the package P (bobbin B) supported by the carriage arm 21 can be wound at the position (refer to the solid line in FIG. 3(b)) substantially below the swing shaft 21a and The swing shaft 21a moves between the drop positions (refer to the one-point chain line in FIG. 3( b )) substantially behind the swing shaft 21a. When the package P (the bobbin B) is at the winding position, the filament Y is wound on the package P (the bobbin B). In addition, when the package P is located at the drop position, the package P is unloaded from the carrier arm 21 , and the package P is dropped and unloaded to the storage portion 29 provided at the rear of the machine table 10 .

The bobbin holder 22 includes a shaft portion 25 extending in the axial direction (left-right direction), and a disk-shaped support portion 26 attached to the front end portion (end portion in the axial direction) of the shaft portion 25 . The shaft portion 25 is configured such that its base end (end portion on the outer side in the axial direction) is attached to the bracket arm 21 through a bearing (not shown), and is rotatable about the shaft by a winding motor 43 (see FIG. 2 ). The winding motor 43 is controlled by the control unit 14 . By integrally rotating the support portion 26 and the shaft portion 25, the package P (bobbin B) supported by the pair of left and right support portions 26 can be rotated about the shaft.

The shaft portion 25 of the bobbin holder 22 is configured to be extendable and retractable in the axial direction by, for example, a telescopic drive portion 44 (see FIG. 2 ) formed of a cylinder. The expansion-contraction drive unit 44 is controlled by the control unit 14 . When the left and right shaft portions 25 are extended, the right and left support portions 26 are brought close to each other, and the bobbin holder 22 can support both end portions of the bobbin B in the axial direction. On the other hand, when the left and right shaft portions 25 are shortened, the right and left support portions 26 are separated from each other, and the package P can be removed from the bobbin holder 22 .

The right bobbin holder 22 further includes an annular movable portion 27 fitted to the shaft portion 25 on the right side (axially outer side) of the support portion 26 , and the support portion 26 and the movable portion 27 constitute a wire gripping portion 28 . The movable portion 27 is configured to be movable in the axial direction by, for example, a wire-holding driving portion 45 (refer to FIG. 2 ) constituted by a cylinder, so as to be in contact with the support portion 26 at an abutting position (refer to FIG. 1 ). ) and the separation position (refer to FIG. 3( a )) from the support portion 26 . The wire holding drive unit 45 is controlled by the control unit 14 . When starting the winding of the yarn Y on the new bobbin B, the yarn Y is firstly arranged in the gap between the support part 26 and the movable part 27 with the movable part 27 in the separated position, and then the movable part 27 is moved. At the contact position, the wire Y is clamped by the support part 26 and the movable part 27 , so that the wire Y can be held by the wire holding part 28 .

The traverse device 23 is a device for laterally moving the wire Y in the left-right direction. The traverse device 23 is configured by attaching a traverse guide 35 to an endless belt 34 wound around a plurality of pulleys 31 to 33 . The pulley 31 is configured as a drive pulley, and is controlled by the control unit 14 . The traverse guide 35 is attached to a portion of the endless belt 34 extending in the left-right direction. And the endless belt 34 is reciprocally driven by the drive pulley 31, and the traverse guide 35 is reciprocated in the left-right direction. In this way, the wire Y engaged with the traverse guide 35 can be moved laterally in the left-right direction using the tension detection sensor 19 as a traverse fulcrum.

The contact roller 24 is arranged so as to bring the yarn Y into contact with the package P being wound, and is driven to rotate as the package P rotates. In this way, a contact pressure can be applied to the surface of the package P, and the shape of the package P can be adjusted.

The rewinder 1 is further provided with a bobbin supply device 13 . The bobbin supplying device 13 is attached to the uppermost part of the machine table 10, and is a device that supplies a new bobbin B when the completed package P is replaced with a new bobbin B. The bobbin supply device 13 is controlled by the control unit 14 . Furthermore, the bobbin supplying device 13 is omitted from the illustration except in FIG. 1 .

The rewinder 1 is configured to automatically replace the completed package P with a new bobbin B. Therefore, it is necessary to cut the yarn Y between the package P and the yarn feeding part 11 (the yarn feeding package Ps), and let the yarn holding part 28 of the bobbin holder 22 grasp the yarn Y on the yarn feeding part 11 side. The rewinding machine 1 is provided with a clamp cutter 50 for cutting and grasping the yarn Y and guiding it to the yarn grasping part 28 .

FIG. 4 is a plan view of the front end portion of the thread-hanging arm 51 having the gripping cutter 50 . FIG. 5 is a cross-sectional view of the clamp cutter 50 . As shown in FIG. 4, the clamp cutter 50 is attached to the front-end|tip part of the thread hanger arm 51 extended in the front-back direction. The thread-hanging arm 51 is configured to be movable in the front-rear direction and the left-right direction by, for example, an arm drive unit 52 (refer to FIG. 2 ) formed of a cylinder. The arm drive unit 52 is controlled by the control unit 14 . A guide groove 51 a for guiding the wire Y to the clamp cutter 50 is formed at the front end of the wire hanging arm 51 . The front end portion of the guide groove 51a is opened to the right, and the wire Y can be guided to the clamp cutter 50 by introducing the wire Y into the guide groove 51a from there.

As shown in FIG. 5 , the clamp cutter 50 includes a fixed blade 53 , a movable blade 54 , and a holding member 55 . The fixed knife 53 is fixed to the thread hanging arm 51 . The movable blade 54 is arranged below the fixed blade 53, and is configured to be rotated in the horizontal plane by the cutter drive unit 56 (see FIG. 2). The disconnector drive unit 56 is controlled by the control unit 14 . The holding member 55 is a plate-shaped member fixed to the thread-hanging arm 51 below the movable knife 54 .

As shown in FIGS. 4 and 5( a ), in a state where the wire Y is arranged between the fixed blade 53 and the movable blade 54 , the wire Y can be cut by rotating the movable blade 54 toward the fixed blade 53 side. . At this time, as shown in FIG. 5( b ), the movable blade 54 enters between the fixed blade 53 and the holding member 55 . Therefore, the wire Y on the side of the wire feeding part 11 is sandwiched between the lower surface of the movable blade 54 and the upper surface of the holding member 55 . In this way, while cutting the yarn Y, the yarn Y on the side of the yarn feeder 11 can be held by the gripper cutter 50 .

(bobbin replacement operation) The rewinder 1 of the present embodiment is configured so that the completed package P can be automatically replaced with a new bobbin B. Hereinafter, a series of bobbin replacement operations from the completion of the package P to the start of winding the yarn Y on the new bobbin B will be described. 6 and 7 are flowcharts showing the bobbin replacement operation. 8 to 11 are schematic diagrams showing the bobbin replacement operation, the left side of each drawing is a front view, and the right side is a side view.

When the package P is completed, the control unit 14 stops the winding motor 43 to stop the winding of the yarn Y, and stops the rotation of the yarn feeding roller 16 (step S10, Fig. 8(a) ). In the present embodiment, when the winding is stopped, the traverse guide 35 is stopped at a position slightly to the right of the center of the package P in the left-right direction. In addition, at this time, the clamp cutter 50 (the thread hanging arm 51 ) is in a standby position at the rear of the package P and on the left side of the center of the package P in the left-right direction. However, the stop position of the traverse guide 35 and the standby position of the clamp cutter 50 are not limited to the above-mentioned positions.

Next, the control part 14 raises the package P by swinging the carrier arm 21 forward (step S11, FIG.8(b)). The purpose of raising the package P is to allow the clamp cutter 50 attached to the thread-hanging arm 51 that can only move back and forth, left and right, to move below the package P. In this way, the clamp cutter 50 can cut and hold the wire Y between the package P and the wire feeder 11 .

Here, when the package P is lifted, the yarn path between the tension detection sensor 19 functioning as a traverse fulcrum and the package P becomes longer. Therefore, when the package P is raised, the yarn Y is pulled out from the yarn feeding package Ps while being stretched, and there is a possibility that the tension of the yarn Y becomes too large. If the wire Y with excessive tension is cut by the clamp cutter 50 , the wire Y is likely to escape from the clamp cutter 50 at the moment of cutting, and the holding of the wire Y is likely to fail.

Then, in order to avoid such a failure, after the package P has been raised, it is determined whether or not the tension of the yarn Y detected by the tension detection sensor 19 is equal to or less than the preset T1 (the third threshold value of the present invention) (step S12 ). . As a result, when the tension of the yarn Y exceeds T1 (NO in step S12), the yarn Y is fed toward the package P side by rotating the yarn feed roller 16 forward (step S13) to reduce the tension of the yarn Y. Steps S12 and S13 are repeated as necessary until the yarn Y is cut by the clamp cutter 50, so that the tension of the yarn Y can be reduced to T1 or less. T1 is appropriately set according to the type of yarn Y, and for example, in the case of false twisted yarn, it is set to about 2 grams.

When the tension of the thread Y is equal to or less than T1 (YES in step S12 ), the control unit 14 moves the thread-hanging arm 51 forward and rightward to move the clamp cutter 50 below the package P and the thread The cut-off position on the channel (step S14). Next, the thread Y between the package P and the thread feeding part 11 is cut by the clamp cutter 50, and the thread Y on the thread feed part 11 side is clamped by the clamp cutter 50 (step S15, FIG. 9 ( a)). Further, steps S12 and S13 may be executed at a suitable timing after the execution of step S11 until the execution of step S15. That is, steps S12 and S13 may be executed during the execution of step S14 or after the execution of step S14.

When the yarn Y is cut and held by the clamp cutter 50, the new bobbin B is installed immediately after the unloading of the package P (step S16). Specifically, first, the control unit 14 swings the carrier arm 21 to the rear so that the package P is positioned above the storage unit 29 ( FIG. 9( b )). In this state, the bobbin holder 22 is driven to unload the package P from the carrier arm 21, and the package P can be dropped and unloaded to the storage portion 29 ( FIG. 10( a )). When the dropping is completed, the control unit 14 moves the carriage arm 21 back slightly forward, and installs a new bobbin B supplied from the bobbin supplying device 13 to the carriage arm 21 (the bobbin holder 22) (Fig. 10(b)). When the new bobbin B is installed, the control unit 14 opens the wire gripping part 28 of the right bobbin holder 22 (the state where the movable part 27 is separated from the support part 26).

The control unit 14 moves the clamp cutter 50 backward from the cutting position during the unloading and unloading of the package P and the installation of the new bobbin B (the first movement of the present invention, FIG. 9 ). (b)→FIG. 10(a)), and move it to the right along the axial direction (the third movement of the present invention, FIG. 10(a)→FIG. 10(b)) (step S17). 6 and 7 are flowcharts in which steps S17 to S20 are executed after step S16, but actually, steps S17 to S20 are executed during the execution of step S16. However, steps S17 to S20 may be executed at a suitable timing after the execution of step S15 until the execution of step S22.

The purpose of moving the clamp cutter 50 backward in step S17 is to avoid interference between the clamp cutter 50 and the bobbin B when the bobbin B is moved to the winding position in step S22 described later. In addition, the position in the left-right direction after moving the clamp cutter 50 to the right is substantially the same as the gap between the support portion 26 of the bobbin holder 22 and the movable portion 27 . When the clamp cutter 50 is moved to the right, the traverse guide 35 is also moved to the right. Furthermore, after moving the clamp cutter 50 to the right, it may be moved backward, or it may be moved diagonally backward to the right.

Here, when the clamp cutter 50 is moved to the rear and the right direction toward the cutting position, the thread path between the tension detection sensor 19 and the clamp cutter 50 becomes longer. Therefore, when the clamp cutter 50 is moved, the yarn Y is pulled out from the yarn supply package Ps while being stretched, and the tension of the yarn Y may become too large. As a result, there is a concern that the wire Y is detached from the clamp cutter 50 .

Therefore, in order to avoid such a failure, it is judged whether the tension of the wire Y detected by the tension detection sensor 19 is the pre-set T2 during the backward and rightward movement of the clamp cutter 50 (the first aspect of the present invention). 4 threshold) or less (step S18). As a result, when the tension of the yarn Y exceeds T2 (NO in step S18), the yarn Y is fed toward the clamp cutter 50 by rotating the yarn feed roller 16 forward (step S19), and the yarn Y is Tension is reduced. The tension of the wire Y is continuously monitored during the movement of the clamp cutter 50 (No in step S20→step S18), and the tension of the wire Y during the movement of the clamp cutter 50 can be maintained below T2. T2 is appropriately set according to the type of yarn Y, and for example, in the case of false twisted yarn, it is set to about 2 grams.

When the rearward and rightward movement of the clamp cutter 50 is completed (YES in step S20 ), the control unit 14 swings the carriage arm 21 forward and downward to move the new bobbin B to the winding position. position (step S21, Fig. 11(a)). Next, the control unit 14 moves the clamp cutter 50 forward (the second movement of the present invention, FIG. 11( a ) → FIG. 11( b )) (step S22 ). In this way, the wire Y held by the clamp cutter 50 can be guided to the wire holding part 28 , more specifically, to the gap between the support part 26 and the movable part 27 .

Here, when the clamp cutter 50 is moved forward, the thread path between the tension detection sensor 19 and the clamp cutter 50 is shortened. Therefore, when the clamp cutter 50 is moved rearward and rightward, the wire Y pulled out from the wire feeding package Ps is loosened when the clamp cutter 50 is moved forward. If the wire Y held by the clamp cutter 50 becomes slack, the wire Y cannot be guided by the clamp cutter 50 to the small gap between the support portion 26 and the movable portion 27, resulting in a problem with the bobbin holder. 22 hanging wire is prone to failure.

Therefore, in order to avoid such a failure, while the clamp cutter 50 is moving forward, it is determined whether the tension of the wire Y detected by the tension detection sensor 19 is the preset T3 (the first threshold value of the present invention). ) above (step S23). As a result, when the tension of the yarn Y does not reach T3 (NO in step S23), the yarn Y is fed toward the yarn feeding section 11 by reversing the yarn feeding roller 16 (step S24), and the tension of the yarn Y is increased. Slack removed. In this way, the wire Y can be appropriately guided to the wire holding portion 28 (the gap between the support portion 26 and the movable portion 27 ).

Next, it is determined whether or not the tension of the yarn Y detected by the tension detection sensor 19 is equal to or less than T4 (the second threshold value of the present invention) set in advance (step S25 ). As a result, when the tension of the yarn Y exceeds T4 (NO in step S25), the yarn Y is fed toward the clamp cutter 50 by forwardly rotating the yarn feeding roller 16 (step S26). tension is reduced. In this way, it is possible to prevent the wire Y held by the holding cutter 50 from being detached from the holding cutter 50 due to excessive tension.

By continuously monitoring the tension of the wire Y while the clamp cutter 50 is moving forward (No in step S27→step S23), the tension of the wire Y while the clamp cutter 50 is moving can be maintained at T3 or more and Below T4. T3 and T4 are appropriately set according to the type of yarn Y. For example, in the case of false twisted yarn, T3 can be set to about 2 grams, and T4 can be set to about 5 grams.

When the forward movement of the clamp cutter 50 is completed (YES in step S27 ), the wire Y gripped by the clamp cutter 50 is disposed in the gap between the support portion 26 and the movable portion 27 . In this state, the control part 14 makes the movable part 27 abut against the support part 26 to hold the wire Y by the wire holding part 28, and releases the holding of the wire Y by the clamp cutter 50 (step S28, Figure 12(a)).

When the gripping of the wire Y by the clamp cutter 50 is released, the control unit 14 moves the clamp cutter 50 to the standby position ( FIG. 12( b )). In addition, the control unit 14 rotates the bobbin holder 22 and rotates the feed roller 16 forward, and further drives the traverse guide 35 to reciprocate, thereby restarting the winding of the yarn Y on the new bobbin B ( step S29).

In the present embodiment, the rearward movement of the clamp cutter 50 from the cutting position corresponds to the "first movement" of the present invention, and the rightward movement following the first movement corresponds to the "first movement" of the present invention. The third movement" and the forward movement following the third movement corresponds to the "second movement" of the present invention. In addition, the action of removing the slack of the yarn Y by reversing the feed roller 16 corresponds to the "tensioning action" of the present invention, and the action of loosening the yarn Y by rotating the feed roller 16 forward corresponds to The "release action" of the present invention.

(Effect) In the present embodiment, the control unit 14 uses the tension detection sensor 19 (tensile detection sensor 19 ) during the period from when the gripper cutter 50 starts the second movement until the thread Y is gripped by the thread gripping unit 28 . The operation of the feed roller 16 (the thread tension adjusting part) is controlled so that the tension detected by the part) is maintained at T3 (the first threshold value) or more. In the case of adopting such a configuration, as long as T3 is appropriately set, the state in which the yarn Y is not loosened during the second movement of the clamp cutter 50 can be maintained. Therefore, the wire Y can be surely guided to the wire holding part 28 by the clamp cutter 50 .

In the present embodiment, the control unit 14 uses the tension detected by the tension detection sensor 19 during the period from the start of the second movement of the clamp cutter 50 until the thread Y is gripped by the thread gripping unit 28 . The operation of the feed roller 16 is controlled so as to be kept below T4 (second threshold value), which is greater than T3. During the second movement of the clamp cutter 50, if only the feed roller 16 is controlled so that the tension of the thread Y is maintained at or above T1, the tension of the thread Y becomes too large and the thread Y is removed from the clamp cutter. 50 Doubts of disengagement. In this regard, as described above, by appropriately setting the upper limit of the tension of the wire Y in the second movement of the clamp cutter 50, that is, T4, it is possible to prevent the wire Y from being clamped during the second movement. The cutter 50 is disengaged.

In the present embodiment, the control unit 14 cuts the yarn Y by the clamp cutter 50 after the package P is moved in the direction (upward) in which the yarn Y is pulled out from the yarn feeder 11. The feed roller 16 is loosened so that the tension detected by the tension detection sensor 19 becomes equal to or less than T1 (third threshold value). When the package P moves in the direction in which the yarn Y is pulled out from the yarn feeder 11, the tension of the yarn Y between the yarn feeder 11 and the package P becomes too large. If the wire Y is broken, there is a concern that the wire Y will escape before the wire Y is grasped by the clamp cutter 50 . In this regard, in the case of adopting the above-described configuration, as long as T1 is appropriately set, the tension of the wire Y can be reduced before the wire Y is cut by the clamp cutter 50, so that the clamp cutting can be performed. The grip of the wire Y of the device 50 is surely performed.

In the present embodiment, the control unit 14 controls the feed so that the tension detected by the tension detection sensor 19 is maintained below T2 (fourth threshold value) during the first movement of the clamp cutter 50 Motion of the wire roll 16 . In the first movement, when the gripper cutter 50 is moved in the direction in which the wire Y is pulled out from the wire feeder 11, there is a possibility that the tension of the wire Y becomes too large and the thread Y is detached from the gripper cutter 50 . In this regard, in the case of adopting the above-mentioned configuration, as long as T2 is appropriately set, the tension of the wire Y during the first movement of the clamp cutter 50 can be reduced, so that it is possible to prevent the yarn Y from being lost during the first movement. Disengage from the clamp cutter 50 .

In the present embodiment, the control unit 14 controls the feed so that the tension detected by the tension detection sensor 19 is maintained below T2 (fourth threshold value) during the third movement of the clamp cutter 50 Motion of the wire roll 16 . In the third movement, when the gripper cutter 50 is moved in the direction in which the wire Y is pulled out from the wire feeder 11, there is a possibility that the tension of the wire Y becomes too large and the thread Y is detached from the gripper cutter 50 . In this regard, in the case of adopting the above-mentioned configuration, as long as T2 is appropriately set, the tension of the wire Y during the third movement of the clamp cutter 50 can be reduced, so that it is possible to prevent the yarn Y from being lost during the first movement. Disengage from the clamp cutter 50 .

In the present embodiment, as the "yarn adjusting portion" of the present invention, a forward and reverse rotatable yarn feeding roller 16 is used which is arranged between the yarn feeding portion 11 and the winding portion 12 in the yarn advancing direction. The feed roller 16 is usually installed in the rewinder 1 in many cases. Therefore, by using the feed roller 16 as the yarn tension adjusting portion, it is not necessary to add a new device, and the cost can be reduced.

In the present embodiment, the wire gripping portion 28 includes a support portion 26 that supports the end portion in the axial direction of the bobbin B, and a contact position capable of abutting against the support portion 26 and away from the support portion 26 in the axial direction. For the movable portion 27 that moves between the separated positions, the wire Y is placed in the gap between the movable portion 27 and the support portion 26 in the state where the movable portion 27 is at the separated position, and then the movable portion 27 is moved to the contact position to remove the wire Y. control. In this way, when the wire Y held by the clamp cutter 50 is guided to a narrow gap, the present invention that can remove the slack of the wire Y is particularly effective.

(Other Embodiments) Next, modifications in which various modifications are added to the above-described embodiment will be described.

In the above-described embodiment, the operation of the feed roller 16 is controlled based on the tension of the yarn Y detected by the tension detection sensor 19, but it is not necessary to control the feed roller 16 based on the tension of the yarn Y. For example, the amount of rotation to rotate the feed roller 16 forward or reverse may be determined in advance according to the amount of slack and the tension of the yarn Y expected in advance. In this case, it is only necessary to make the feed roller 16 rotate forward or reverse by a predetermined amount at an appropriate timing, and the control of the feed roller 16 during the bobbin replacement operation becomes easy.

In the above-described embodiment, the rearward movement of the clamp cutter 50 from the cutting position corresponds to the "first movement" of the present invention. However, in the moving direction of the clamping cutter 50 in the first movement, the rearward movement component may be combined with the leftward and rightward movement component to be obliquely rearward.

In the above-described embodiment, the forward movement of the clamp cutter 50 toward the wire gripping portion 28 corresponds to the "second movement" of the present invention. However, in the moving direction of the clamp cutter 50 in the second movement, the forward movement component may be combined with the movement component in the left-right direction and may be diagonally forward.

In the above-mentioned embodiment, the thread-hanging arm 51 provided with the clamp cutter 50 is configured to be movable in the front-rear direction and the left-right direction. However, as long as the clamp cutter 50 can be appropriately moved, the configuration of the thread hanging arm 51 is not limited to this. For example, the thread hanging arm 51 may also be configured to be movable in the up-down direction or swingable.

In the above-described embodiment, the feed roller 16 functions as a "yarn adjusting portion" of the present invention. However, the silk tightness adjusting part may also have other configurations. For example, the thread tightening and pressing mechanism 60 shown in FIG. 13 may be used as the thread tension adjusting portion. The wire pressing mechanism 60 is arranged between appropriate wire guides 68 and 69 . The wire pressing mechanism 60 includes an arm 61 , a swing shaft 62 provided at a base end portion of the arm 61 , and a roller 63 provided at a front end portion of the arm 61 . By swinging the arm 61 around the swing shaft 62, the degree of pressing the yarn Y by the roller 63 can be adjusted. If the arm 61 is swung to the left in the figure, the slack in the wire Y can be removed, and if the arm 61 is swung to the right of the figure, the wire Y can be loosened. Alternatively, if the tensioning device 18 (refer to FIG. 1 ) that sandwiches the yarn Y is configured to be movable up and down, the tensioning device 18 can also be used as a yarn tension adjusting portion.

In the above-described embodiment, the wire gripping portion 28 is constituted by the support portion 26 provided on the bobbin holder 22 and the movable portion 27 . However, the specific structure of the wire gripping portion is not limited to this. For example, a slit (slit) may be formed in the peripheral surface of the bobbin B, and the thread Y may be guided to the slit by the clamp cutter 50, and the thread may be hung. In this case, the slit formed in the bobbin B corresponds to the yarn gripping portion of the present invention.

In the above-described embodiment, the yarn winding machine of the present invention is applied to the rewinding machine 1, but the present invention may be applied to other yarn winding machines.

1: Rewinding machine (silk winding machine) 10: Machine 11: Feeding Department 12: winding part 13: Bobbin supply device 14: Control Department 15: wire guide 16: Feeding roller (silk tension adjustment part) 17: wire guide 18: Tension imparting device 19: Tension detection sensor (tension detection part) 21: Bracket Arm 22: Bobbin holder 23: Traverse device 24: Contact Roller 26: Support part 27: Movable part 28: Silk grip 50: Clamp Cutter B: Bobbin P: roll Ps: Feeding wire package Y: silk

Fig. 1 is a schematic view of the rewinder of this embodiment viewed from the front. FIG. 2 is a diagram showing the electrical structure of the rewinder of the present embodiment. Figure 3(a), (b) is a front view and a side view showing the support structure of the package. Fig. 4 is a plan view of the front end portion of the thread hanging arm with the gripping cutter. Figure 5(a), (b) is a sectional view of the clamp cutter. Fig. 6 is a flow chart showing the bobbin replacement operation. Fig. 7 is a flowchart showing the bobbin replacement operation. Figure 8(a), (b) are schematic diagrams showing the bobbin replacement action. Figure 9(a), (b) are schematic diagrams showing the bobbin replacement action. Figure 10(a), (b) are schematic diagrams showing the bobbin replacement action. Figure 11(a), (b) is a schematic diagram showing the bobbin replacement operation. Figure 12(a), (b) are schematic diagrams showing the bobbin replacement operation. FIG. 13 is a schematic diagram showing a modification of the thread tension adjusting portion.

1: Rewinding machine (silk winding machine)

10: Machine

11: Feeding Department

12: winding part

13: Bobbin supply device

14: Control Department

15: wire guide

16: Feeding roller (silk tension adjustment part)

17: wire guide

18: Tension imparting device

19: Tension detection sensor (tension detection part)

21: Bracket Arm

22: Bobbin holder

23: Traverse device

24: Contact Roller

28: Silk grip

31~33: pulley

34: Endless Belt

35: Traverse guide

50: Clamp Cutter

B: Bobbin

P: roll

Ps: Feeding wire package

Y: silk

Claims (31)

A yarn winding machine, which has a winding section for winding yarn supplied from a yarn feeding section on a bobbin to form a package, and which can automatically replace the completed package with a new bobbin. A winding machine is characterized by being provided with a bobbin holder for rotatably supporting the bobbin, a clamp cutter, a yarn tension adjusting part, and a control part, the clamp cutter , when the package is replaced with a new bobbin, the yarn between the yarn feeder and the package is cut, the yarn on the yarn feeder side is held, and the held yarn is guided In the yarn holding part formed on the bobbin holder or the bobbin, the yarn tension adjusting part can perform a tensioning action to remove the slack of the yarn held by the clamp cutter and loosen the yarn The control unit controls at least the operation of the thread tension adjusting unit, the clamp cutter is configured to perform at least a first movement and a second movement, and the first movement is connected to the thread feeding unit and the coil. After the wire between the bobbins is cut and held, it is moved along the direction of pulling out the wire from the wire feeder with a moving component on the side of the orthogonal direction perpendicular to the axial direction of the bobbin holder. The second movement is a movement in a direction having a movement component to the other side of the orthogonal direction in order to guide the grasped wire to the wire holding portion after the first movement, and the control unit , start the second movement in the clamping cutter After the movement, until the wire is held by the wire holding portion, the wire tensioning portion is allowed to perform the above-mentioned tensioning action. The thread winding machine according to claim 1, wherein the control unit causes the thread tension adjusting unit to perform the tensioning operation while the clamp cutter is performing the second movement. The yarn winding machine according to claim 1, wherein the clamp cutter is configured to separate the yarn feeder and the coil after the package moves in a direction in which the yarn is drawn out from the yarn feeder. For cutting and holding the yarn between packages, the control unit controls the yarn after the package is moved in the direction in which the yarn is drawn out from the yarn feeder until the yarn is cut by the clamp cutter. The tension adjusting part performs the aforementioned loosening action. The yarn winding machine according to claim 2, wherein the clamp cutter is configured to separate the yarn feeder and the coil after the package is moved in a direction in which the yarn is drawn out from the yarn feeder. For cutting and holding the yarn between packages, the control unit controls the yarn after the package is moved in the direction in which the yarn is drawn out from the yarn feeder until the yarn is cut by the clamp cutter. The tension adjusting part performs the aforementioned loosening action. The wire winding machine of claim 1, wherein, The control unit causes the thread tension adjusting unit to perform the loosening operation while the clamp cutter is performing the first movement. The yarn winding machine according to claim 2, wherein the control unit causes the yarn tension adjusting unit to perform the loosening operation while the clamp cutter is performing the first movement. The thread winding machine according to claim 3, wherein the control unit causes the thread tension adjusting unit to perform the loosening operation while the clamp cutter is performing the first movement. The yarn winding machine according to claim 4, wherein the control unit causes the yarn tension adjusting unit to perform the loosening operation while the clamp cutter is performing the first movement. The yarn winding machine according to claim 1, wherein the clamp cutter is further configured to perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. Let the above-mentioned thread tension adjusting part perform the above-mentioned loosening action. The wire winding machine of claim 2, wherein, The clamp cutter is further configured to perform a third movement along the line after cutting and holding the wire between the wire feeder and the package and before the second movement. The axial direction moves in the direction in which the thread is pulled out from the thread feeding unit, and the control unit causes the thread tension adjusting unit to perform the loosening operation during the third movement of the clamp cutter. The yarn winding machine according to claim 3, wherein the clamp cutter is further configured to perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. Let the above-mentioned thread tension adjusting part perform the above-mentioned loosening action. The yarn winding machine according to claim 4, wherein the clamp cutter is further configured to perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. Let the above-mentioned thread tension adjusting part perform the above-mentioned loosening action. The wire winding machine of claim 5, wherein, The clamp cutter is further configured to perform a third movement along the line after cutting and holding the wire between the wire feeder and the package and before the second movement. The axial direction moves in the direction in which the thread is pulled out from the thread feeding unit, and the control unit causes the thread tension adjusting unit to perform the loosening operation during the third movement of the clamp cutter. The yarn winding machine according to claim 6, wherein the clamp cutter is configured to further perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. Let the above-mentioned thread tension adjusting part perform the above-mentioned loosening action. The yarn winding machine according to claim 7, wherein the clamp cutter is configured to further perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. Let the above-mentioned thread tension adjusting part perform the above-mentioned loosening action. The wire winding machine of claim 8, wherein, The clamp cutter is further configured to perform a third movement along the line after cutting and holding the wire between the wire feeder and the package and before the second movement. The axial direction moves in the direction in which the thread is pulled out from the thread feeding unit, and the control unit causes the thread tension adjusting unit to perform the loosening operation during the third movement of the clamp cutter. The yarn winding machine according to claim 1, wherein a tension detection part for detecting the tension of the yarn is arranged between the yarn feeding part and the winding part in the yarn traveling direction, and the control part is located in the During the period after the start of the second movement of the clamp cutter until the wire is held by the wire holding portion, the above-mentioned tension is controlled so that the tension detected by the tension detecting portion is maintained at or above a predetermined first threshold value. The action of the silk tension adjustment section. The yarn winding machine according to claim 17, wherein the control unit causes the yarn to be gripped by the yarn gripping unit during the period after the gripper cutter starts the second movement until the yarn gripping unit grips the yarn. The operation of the thread tension adjusting unit is controlled so that the tension detected by the tension detection unit is maintained at or below a predetermined second threshold value larger than the first threshold value. The yarn winding machine according to claim 17, wherein the gripping cutter is configured so that the yarn feeder is provided in the direction from the package to the yarn feeding section. After moving the direction in which the yarn is pulled out, the yarn between the yarn feeding part and the package is cut and held, and the control part is moved to the direction in which the yarn is pulled out from the yarn feeding part after the package is moved. Until the thread is cut by the clamp cutter, the thread tension adjusting unit performs the loosening operation so that the tension detected by the tension detection unit becomes equal to or less than a predetermined third threshold value. The yarn winding machine according to claim 18, wherein the clamp cutter is configured to separate the yarn feeder and the coil after the package is moved in a direction in which the yarn is drawn out from the yarn feeder. For cutting and holding the wire between the packages, the control unit operates after the package is moved in the direction in which the yarn is pulled out from the wire feeder until the yarn is cut by the clamping cutter. The thread tension adjusting unit performs the loosening operation so that the tension detected by the tension detecting unit becomes equal to or less than a predetermined third threshold value. The yarn winding machine according to claim 17, wherein the control unit maintains the tension detected by the tension detection unit at a predetermined first value during the period when the clamp cutter performs the first movement. 4 The operation of the thread tension adjusting part is controlled so as to be less than or equal to the threshold value. The yarn winding machine according to claim 18, wherein the control unit maintains the tension detected by the tension detection unit at a predetermined value during the period when the clamp cutter performs the first movement The action of the thread tension adjusting portion is controlled so as to be below the fourth threshold value of . The yarn winding machine according to claim 19, wherein the control unit maintains the tension detected by the tension detection unit at a predetermined first value during the period when the clamp cutter performs the first movement. 4 The operation of the thread tension adjusting part is controlled so as to be less than or equal to the threshold value. The yarn winding machine according to claim 20, wherein the control unit maintains the tension detected by the tension detection unit at a predetermined first value during the period when the clamp cutter performs the first movement. 4 The operation of the thread tension adjusting part is controlled so as to be less than or equal to the threshold value. The yarn winding machine according to claim 21, wherein the clamp cutter is further configured to perform a third movement, and the third movement is connected to cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. The operation of the thread tension adjusting unit is controlled so that the tension detected by the tension detection unit is maintained below the fourth threshold value. The yarn winding machine according to claim 22, wherein the clamp cutter is further configured to perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and hold it Then and before the second movement, the controller moves along the axial direction in the direction in which the wire is pulled out from the wire feeding part, and the control part causes the clamp cutter to perform the third movement during the third movement. The operation of the thread tension adjusting unit is controlled so that the tension detected by the tension detection unit is maintained below the fourth threshold value. The yarn winding machine according to claim 23, wherein the clamp cutter is further configured to perform a third movement, and the third movement is connected to cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. The operation of the thread tension adjusting unit is controlled so that the tension detected by the tension detection unit is maintained below the fourth threshold value. The yarn winding machine according to claim 24, wherein the clamp cutter is further configured to perform a third movement, and the third movement is associated with cutting the yarn between the yarn feeder and the package. and after the gripping and before the second movement, the control section moves along the axial direction in the direction in which the wire is drawn out from the wire feeding unit, and the control unit performs the third movement while the clamp cutter is moving. The operation of the thread tension adjusting unit is controlled so that the tension detected by the tension detection unit is maintained below the fourth threshold value. The yarn winding machine according to any one of claims 1 to 28, wherein a forward and reverse rotatable yarn feeding roller is arranged between the yarn feeding portion and the winding portion in the yarn traveling direction, and the yarn feeding The roller functions as the above-mentioned yarn tensioning portion. The wire winding machine according to any one of claims 1 to 28, wherein the wire gripping portion includes a support portion that supports an end portion of the bobbin in the axial direction, and a support portion capable of abutting against the support portion. The movable portion that moves between the contact position and the separation position to be separated from the support portion in the axial direction, in a state where the movable portion is located at the separation position, a wire is arranged in the gap between the movable portion and the support portion. After that, the wire is held by moving the movable portion to the abutting position. The yarn winding machine according to claim 29, wherein the yarn holding portion includes a support portion that supports the end portion of the bobbin in the axial direction, a contact position capable of abutting the support portion, and The movable portion that moves between the separation positions separated from the support portion in the axial direction, in a state where the movable portion is located at the separation position, after arranging the wire in the gap between the movable portion and the support portion, by making the The movable part moves to the abutting position to hold the wire.

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