JP2011042449A - Winding unit and yarn winder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding unit improving a work speed of winding work, and maintaining a distance between a surface of a package P and a suction port 50a at a proper distance A for performing capturing work of the yarn end. <P>SOLUTION: This winding unit is constituted so that in capturing work of the yarn end, a contact member 64 regulates the distance between the suction port 50a and the surface of the package P by contacting a capturing pipe 50. Thus, in the capturing work of the yarn end, the capturing pipe 50 improves a turning speed to the package P, and prevents the suction port 50a from colliding with the package P. Since the winding unit is constituted so that a contact position F of contacting the contact member 64 and the capturing pipe 50 can be changed by a contact member adjusting motor 58, the distance between the surface of the package P and the suction port 50a can be maintained at the proper distance A for performing the capturing work of the yarn end. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a winding unit that sucks and captures a yarn end of a yarn, and a yarn winding machine including the winding unit.

The winding unit performs a winding operation of winding the yarn unwound from the yarn supplying bobbin back to the winding bobbin to form a package on the winding bobbin. In this winding unit, when the yarn between the yarn supplying bobbin and the package breaks during the winding operation, the yarn joining operation for connecting the yarn end on the yarn supplying bobbin side and the yarn end on the package side is performed. Done. In order to perform the yarn splicing operation, it is necessary to perform the upper yarn capturing operation of sucking and capturing the upper yarn that is the yarn end on the package side existing on the surface of the package with the suction port provided at the front end of the capturing pipe. .

However, as the winding of the package progresses and the package diameter increases, the position of the surface of the package moves. Therefore, in order to appropriately capture the upper thread, it is necessary to move the position of the suction port in accordance with the movement of the position of the surface of the package. Patent Document 1 describes a winding unit including a stopper connected by a cradle and a link mechanism as a technique for appropriately capturing an upper thread in response to movement of the surface of a package. In this winding unit, the position of the stopper that regulates the suction capture position of the capture pipe varies according to the rotation of the cradle.

German Patent Application Publication No. 10150590 WO2007 140871 Specification

However, since the stopper described in Patent Document 1 is connected to the cradle by a link mechanism, the position of the stopper is uniquely determined by the movement of the cradle. Therefore, the winding unit described in Patent Document 1 cannot adjust the position of the stopper, that is, the suction capture position of the capture pipe, and lacks flexibility.

Patent Document 2 describes a winding unit that adjusts the distance between the surface of the package and the suction port by controlling the rotation angle of the motor that rotates the capture pipe based on the detection result of the origin sensor. Has been. In the winding unit described in Patent Document 2, the distance between the surface of the package and the suction port is a mechanism that can be adjusted independently of the change in the package diameter.

However, in the winding unit described in Patent Document 2, since there is no stopper that physically restricts the movement of the capture pipe, considering the inertial force, the capture pipe is swung when the suction port is brought close to the surface of the package. There was a problem that the speed could not be increased. Therefore, in the winding unit described in Patent Document 2, there is a limit to the working speed of the yarn end catching operation, and it is difficult to improve the working speed of the winding operation. In the unlikely event that a physical impact is applied to the capture pipe from the outside, the package and the suction port may collide.

The present invention has been made in view of the above circumstances, and its main purpose is to improve the work speed of the winding work, and to reduce the distance between the surface of the package and the suction port, and to catch the upper thread. It is an object of the present invention to provide a winding unit that can be flexibly changed to an appropriate distance to perform.

The problem to be solved by the present invention is as described above, and means for solving this problem will be described.

According to the present invention, a winding unit configured as follows is provided. That is, the winding unit includes a suction port, a capture pipe having the suction port, a contact member, a position adjustment member, and a position adjustment member control unit. The suction port sucks and captures the yarn end existing on the surface of the package. The capture pipe is configured to be movable to bring the suction port closer to the package. The contact member contacts the capture pipe and defines an approach distance that is a distance between the suction port and the surface of the package. The position adjusting member adjusts the approach distance by changing a contact position where the capture pipe and the contact member are in contact with each other. The position adjustment member control unit controls the position adjustment member.

With this configuration, in the winding unit of the present invention, the distance between the surface of the package and the suction port (hereinafter referred to as the approach distance) can be adjusted independently of the change in the package diameter. Therefore, it is possible to maintain a proper distance for performing the upper thread capturing operation more accurately. At the same time, in the winding unit of the present invention, the movement of the capture pipe is physically restricted, so that the swivel speed of the capture pipe can be increased. Furthermore, in the winding unit of the present invention, since the movement of the capture pipe is physically restricted, it is possible to more reliably avoid a situation where the package and the suction port collide. In other words, with this configuration, in the winding unit of the present invention, the upper thread catching work that achieves both the flexibility to match the approach distance to the distance for appropriately performing the upper thread catching work and the improvement of the work speed. Can be performed. Therefore, in the winding unit of the present invention, a quick winding operation can be realized under optimum conditions.

The winding unit of the present invention may be configured as follows. That is, the winding unit further includes a lock mechanism that prevents the contact position from being changed by the capture pipe coming into contact with the contact member.

With this configuration, in the winding unit of the present invention, the contact position is not changed by the impact of the capture pipe contacting the contact member, so that the approach distance can be prevented from being changed by an external force. Therefore, in the winding unit of the present invention, the approach distance can be accurately maintained at a distance for appropriately performing the upper thread catching operation. At the same time, in the winding unit of the present invention, it is possible to more reliably avoid a situation where the suction port collides with the package.

The winding unit of the present invention may be configured as follows. That is, the position adjusting member and the contact member of the winding unit are connected via the lock mechanism, and the lock mechanism is constituted by a male screw and a female screw.

With this configuration, the winding unit of the present invention can implement a lock mechanism with a simple configuration.

The winding unit of the present invention may be configured as follows. That is, in this winding unit, the contact member is a cam.

With this configuration, it is possible to provide a winding unit that is less likely to accumulate fluff on the position adjustment member and has excellent maintainability.

The winding unit of the present invention may be configured as follows. That is, the winding unit further includes a determination unit, a yarn catching control unit, and a failure frequency counting unit. The determination unit determines success or failure of the yarn end capturing operation by the capturing pipe. When the determination unit determines that the yarn end catching operation by the catching pipe has failed, the yarn catching control unit repeatedly repeats the yarn end catching operation by the catching pipe until the yarn end catching operation is successful. Perform work. The failure count section counts the number of failures in which the catch pipe has failed to catch the yarn end. And the said position adjustment member control part controls the said position adjustment member according to the failure frequency which the failure frequency count part counted in the said capture | acquisition operation | work.

With this configuration, in the winding unit of the present invention, when the yarn end catching operation fails, the approach distance can be automatically changed and the yarn end catching operation by the catch pipe can be repeated. Therefore, it is possible to maintain the distance for accurately performing the capturing operation of the upper thread more accurately. Therefore, in the winding unit of the present invention, the efficiency of the winding work can be improved.

The winding unit of the present invention may be configured as follows. That is, the winding unit further includes a setting unit, a distance detection unit, and a display unit. The setting unit sets a limit approach distance that is a distance at which the suction port can be closest to the package. The distance detection unit detects that the approach distance has reached the limit proximity distance set by the setting unit. The display unit displays that the catch pipe has failed to catch the yarn end at the limit approach distance. The yarn catching control unit stops the repeated catching operation when the judging unit determines that the catching pipe has failed to catch the yarn end at the limit approach distance, and the display unit displays the It is displayed that the catching pipe has failed to catch the yarn end at the limit approach distance.

With this configuration, the winding unit of the present invention is in a situation where the operator cannot take the yarn end even if the approach distance is changed by the automatic operation of the winding unit and the operator needs to take action. You can tell that there is. Therefore, the operator can quickly find the winding unit and take appropriate measures, so that the efficiency of the winding operation can be improved.

A plurality of winding units of the present invention may be provided and a yarn winding machine may be configured as follows. That is, in the yarn winding machine, each winding unit further includes a determination unit, a yarn catching control unit, a failure frequency counting unit, and a failure average calculation unit. The determination unit determines success or failure of the yarn end capturing operation by the capturing pipe. When the determination unit determines that the yarn end catching operation by the catching pipe has failed, the yarn catching control unit repeatedly repeats the yarn end catching operation by the catching pipe until the yarn end catching operation is successful. Perform work. The failure count section counts the number of failures in which the catch pipe has failed to catch the yarn end. The failure average calculating unit calculates a winding unit failure average obtained by averaging the number of failures counted by the failure number counting unit over the plurality of past repeated capturing operations. The yarn winder includes a machine base failure average calculation unit, a comparison determination unit, and a command unit. The machine base failure average calculating unit receives the winding unit failure average from each winding unit, and calculates a machine base failure average obtained by averaging a plurality of the winding unit failure averages. The comparison determination unit compares the winding unit failure average and the machine stand failure average, and determines the size. The command unit commands the winding unit determined by the comparison determination unit that the winding unit failure average is larger than the machine stand failure average to shorten the approach distance.

With this configuration, in the yarn winding machine of the present invention, a winding unit having a low success rate of the yarn end catching operation is found in the entire yarn winding machine, and the approaching distance of the winding unit having the low success rate is reduced. You can make adjustments. Thereby, the success rate of the yarn end catching operation of the entire yarn winding machine can be improved.

The yarn winding machine of the present invention may be configured as follows. That is, a setting unit for setting the number of repetitions of the repeated capturing operation is provided. The yarn catching control unit repeatedly executes the catching operation repeatedly until the yarn end catching operation is successful or until the yarn end catching operation reaches the set number of repetitions. The failure count section counts the number of failures in the repetitive work. The failure frequency average calculation unit calculates the winding unit failure average by averaging the failure frequency over a plurality of failure counts counted in the past.

With this configuration, in the winding unit provided in the yarn winding machine of the present invention, it is possible to prevent the winding unit that does not succeed in the yarn end capturing operation from repeating the yarn end capturing operation indefinitely. Thereby, the working efficiency of the whole yarn winding machine can be improved.

1 is a front view of a yarn winding machine according to the present invention. The schematic diagram and block diagram which showed the schematic structure of the winding unit with which the yarn winding machine which concerns on one Embodiment of this invention is provided. Explanatory drawing of optimal distance, limit approach distance, and movement width. The side view which showed the 1st Example of the approach distance prescription | regulation mechanism of this invention. The side view which showed the 2nd Example of the approach distance prescription | regulation mechanism of this invention. The flowchart which showed the 1st Example of control of the approach distance prescription | regulation mechanism of this invention. The flowchart which showed the 2nd Example of control of the approach distance prescription | regulation mechanism of this invention. The flowchart which showed the 3rd Example of control of the approach distance regulation mechanism of this invention.

Next, embodiments of the invention will be described with reference to the drawings. FIG. 1 is a front view of a yarn winding machine 2 according to an embodiment of the present invention. FIG. 2 is a schematic diagram and a block diagram showing a schematic configuration of the winding unit 4.

As shown in FIG. 1, the yarn winding machine 2 according to the present embodiment includes a plurality of winding units 4 arranged side by side, and a machine base control arranged at the end of the winding units 4 in the side-by-side direction. And a device 6. The machine base control device 6 controls and manages the operation of the yarn winding machine 2 as a whole. As shown in FIG. 2, the machine base control device 6 includes a machine base failure average calculation unit 8, a comparison determination unit 10, and a command unit 12.

Next, the winding unit 4 provided in the yarn winding machine 2 according to one embodiment of the present invention will be described. As shown in FIG. 2, the winding unit 4 includes a unit control unit 14 and a unit main body 16.

The unit controller 14 controls the operation of the unit body 16 by transmitting and receiving various control information to and from each member constituting the unit body 16. Further, the unit control unit 14 is configured to be able to transmit and receive various control information to and from the machine base control unit 6. With this configuration, centralized management of the plurality of winding units 4 by the machine base control unit 6 becomes possible. The unit control unit 14 includes a setting unit 18, a determination unit 20, a contact member adjustment motor control unit 22 (position adjustment member control unit), a package diameter calculation unit 24, a failure frequency count unit 26, and a distance detection unit 28. And a yarn catching control unit 30 and a failure average calculating unit 32.

The unit main body 16 unwinds the yarn Y from the yarn supplying bobbin B at the yarn supplying unit, and winds the unwound yarn Y around the winding bobbin (not shown) at the winding unit while traversing the yarn Y. A winding operation for forming the shaped package P is performed. In the yarn traveling path between the yarn supplying unit and the winding unit, the unwinding assisting device 34, the tension applying device 36, the yarn joining device 38, and the yarn defect detecting device 40 are sequentially arranged from the yarn supplying unit side. , Is arranged. In the following description, the winding unit side of the winding unit 4 is the upper side, and the yarn feeding unit side is the lower side.

The yarn supplying section supplies the yarn Y of the yarn supplying bobbin B received from the yarn supplying bobbin supplying device 42 to the upper side of the winding unit 4. When the yarn supplying bobbin B completes the supply of the yarn Y and becomes an empty bobbin BB, the empty bobbin BB is unloaded from the yarn supplying unit to the yarn supplying bobbin unloading device 44. In the following, the yarn feeding bobbin supply device 42 side is the rear of the winding unit 4, and the yarn feeding bobbin carry-out device 44 side is the front of the winding unit 4.

The unwinding assisting device 34 lowers the regulating member covering the core pipe of the yarn supplying bobbin B in conjunction with the unwinding of the yarn Y from the yarn supplying bobbin B, thereby unwinding the yarn Y from the yarn supplying bobbin B. Is to assist. The regulating member contacts the balloon formed on the upper portion of the yarn feeding bobbin B by the rotation and centrifugal force of the yarn Y unwound from the yarn feeding bobbin B, and controls the balloon to an appropriate size to thereby control the yarn Y. Assist with unraveling. A chase portion detection unit (not shown) for detecting the chase portion of the yarn feeding bobbin B is provided in the vicinity of the regulating member. The release assisting device 34 is configured such that when the chase portion detection unit detects the descent of the chase portion, the restriction member can be lowered by, for example, an air cylinder (not shown).

The tension applying device 36 applies an appropriate winding tension (tension) to the traveling yarn Y. If the tension value of the yarn Y is not appropriate, yarn breakage will increase or the winding shape of the winding package P will be poor. The tension applying device 36 changes the tension applied to the yarn Y in accordance with the tension value of the yarn Y in order to prevent this yarn breakage and to keep the tension value of the yarn Y appropriate. As such a tension applying device 36, for example, a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth can be used. The movable comb teeth are rotatably installed so as to be engaged with or released from the fixed comb teeth. In addition to the gate type device, for example, a disk type device can be adopted as the tension applying device 36.

The yarn joining device 38 is used when the yarn defect detecting device 40 detects a yarn defect and performs yarn cutting, or when yarn breakage occurs during unwinding, etc. The upper thread (thread end) is spliced. As such a yarn joining device 38, a device using a fluid such as compressed air or a mechanical device can be used.

The yarn defect detection device 40 detects a defect in the thickness of the yarn Y such as a slab by processing a signal corresponding to the thickness of the yarn Y with an analyzer (not shown). The yarn defect detecting device 40 is provided with a cutter (not shown) for cutting the yarn Y when the yarn defect is detected. The cutter operates by sending a signal from an analyzer that detects a yarn defect. Further, the yarn defect detection device 40 includes a yarn traveling sensor 46 that senses the traveling of the yarn Y. The yarn traveling sensor 46 is electrically connected to the unit control unit 14 and transmits a yarn break signal to the unit control unit 14 when the traveling of the yarn Y cannot be sensed.

Below the yarn joining device 38, a lower yarn catching pipe 48 that catches the lower yarn on the yarn feeding bobbin B side and guides it to the yarn joining device 38 is provided. The lower thread catching pipe 48 includes a stepping motor (not shown) having a drive shaft connected to a shaft 48b, and is configured to turn downward by driving the stepping motor. One end of the lower thread catching pipe 48 is connected to a negative pressure source, and the lower thread suction port 48a is formed at the other end.

Above the yarn joining device, a catching pipe 50 that sucks and catches the upper yarn and guides it to the yarn joining device 38 is provided. The capture pipe 50 includes a supplemental pipe drive motor 50c that is a stepping motor. The supplementary pipe drive motor 50c is connected to the capture pipe root end 50b via a belt member on its drive shaft. That is, the supplementary pipe 50 is configured to turn upward by driving the supplemental pipe drive motor 50c. One end of the catching pipe 50 is connected to a negative pressure source, and a suction port 50a for catching the upper thread is formed at the other end. Further, an upper thread sensor 50d for detecting the upper thread sucked by the suction port 50a is disposed inside the catch pipe 50.

When the yarn breakage occurs during the winding of the yarn, the unit control unit 14 that has received the yarn breakage signal from the yarn traveling sensor 46 detects the upper yarn on the package P side where the yarn breakage occurs with respect to the lower yarn catching pipe 48 and the catching pipe 50. Then, a catching work signal which is a control signal for instructing to catch the lower thread with the yarn feeding bobbin B is sent. After that, the unit controller 14 sends a yarn joining signal, which is a control signal for instructing the yarn joining device 38 to perform the yarn joining operation. The capture pipe 50 that has received the capture work signal turns from the bottom to the top around the capture pipe root end 50b from the illustrated position, and captures the upper thread through the suction port 50a. Subsequently, the catch pipe 50 guides the upper thread to the yarn joining device 38 by turning from top to bottom around the catch pipe root end 50b. Further, the lower thread catching pipe 48 that has received the catching work signal catches the lower thread through the lower thread suction port 48a and pivots from below to the position shown in FIG. Guide the lower thread. The yarn joining device 38 that has received the yarn joining signal connects the upper yarn received from the catching pipe 50 and the lower yarn received from the lower yarn catching pipe 48 to perform the yarn joining operation.

The winding unit includes a cradle 52 that rotatably and detachably supports the winding bobbin, and a traverse drum 54 that traverses the yarn Y on the winding bobbin.

The cradle 52 is configured to be swingable in a direction approaching or separating from the traverse drum 54 around the support shaft 52a.

The traverse drum 54 has a spiral traverse groove (not shown) for traversing the yarn Y on the winding bobbin on the surface thereof. The traverse drum 54 is provided with a traverse drum drive motor (not shown) for rotating the traverse drum 54 and a drum rotational speed measurement sensor 54 a for measuring the rotational speed of the traverse drum 54. The traverse drum 54 rotates by driving a traverse drum drive motor, and drives a winding bobbin that contacts the traverse drum 54.

An approach distance defining mechanism 56 is provided below the traverse drum 54. The approach distance defining mechanism 56 regulates the approach of the capture pipe 50 to the package P at an appropriate position based on the control information received from the unit controller 14. That is, the approach distance defining mechanism 56 adjusts the approach distance, which is the distance at which the surface of the package P approaches the suction port 50a during the upper thread catching operation.

With the above configuration, when the yarn supplying bobbin B is supplied to the yarn supplying portion of the winding unit 4, the winding unit 4 performs a winding operation.

Next, the configuration of the approach distance defining mechanism 56 will be described with reference to FIGS. FIG. 4 is a side view showing a first embodiment of the approach distance defining mechanism 56 of the present invention. 2 and 4 correspond to the front side of the winding unit 4 and the left side corresponds to the rear side of the winding unit 4.

As shown in FIGS. 2 and 4, the approach distance defining mechanism 56 is connected to the contact member adjusting motor 58 (position adjusting member) and the drive shaft of the contact member adjusting motor 58 in order from the rear of the winding unit 4. The male screw 60, the female screw 62 that receives the male screw 60, and the contact member 64 are arranged.

As shown in FIG. 2, the contact member adjustment motor 58 is controlled by the contact member adjustment motor control unit 22, and can be switched between driving and stopping based on control information received from the contact member adjustment motor control unit 22. It is configured. The contact member adjusting motor 58 is fixed below the winding portion of the unit body 16. The contact member adjusting motor 58 is a stepping motor.

The male screw 60 is connected to the contact member adjustment motor 58 and rotates when the contact member adjustment motor 58 is driven. The female screw 62 receives the male screw 60 and is arranged so that a part of the outer periphery thereof contacts the unit frame. That is, the female screw 62 is arranged so that a part of the outer periphery is in contact with the unit frame, so that the male screw 60 does not rotate. A contact member 64 is attached to the female screw 62. When the contact member 64 contacts the capture pipe 50 at the contact position F, the approach distance is determined.

In these configurations, the approach distance defining mechanism 56 moves the position of the female screw 62 in the front-rear direction by driving the contact position adjustment motor 58 based on the control information transmitted from the contact member adjustment motor control unit 22. The position of the contact member 64 is changed. Thereby, the approach distance is adjusted.

Further, as shown in FIG. 4, the approach distance defining mechanism 56 has a contact plate 61 for determining the origin position of the contact member 64 between the contact member adjusting motor 58 and the female screw 62. When resetting the position of the contact member 64 whose position has been changed in the forward direction in the approach distance defining mechanism 56, the contact member adjustment motor 58 is moved so that the contact member 64 moves over the rear. Drive. That is, the approach distance regulating mechanism 56 is the contact member adjusting motor 58 by driving the contact member adjusting motor 58 for a predetermined time in a state where the female screw 62 contacts the plate 61 and the rearward movement is restricted. The stepping motor is intentionally stepped out, and the contact member 64 can be reliably stopped at the origin position.

Further, the approach distance defining mechanism 56 employs a screw mechanism for connection between the contact member 64 and the contact member adjusting motor 58, so that the force applied from the outside such as an impact when the capture pipe 50 contacts the contact member 64. A self-locking mechanism that prevents the position of the contact member 64 from being changed is formed. The self-locking mechanism of the present invention is realized by a male screw 60 and a female screw 62. Here, the male screw 60 is rotated by the drive of the contact member adjusting motor 58 to move the female screw 60 in the front-rear direction. On the other hand, since the female screw 62 is attached so as not to rotate, it is configured not to move by an external force (for example, contact of the capture pipe 50). Since the male screw 60 and the female screw 62 are configured in this way, the contact member 64 of the approach distance defining mechanism 56 moves by driving the contact member adjusting motor 58 but does not move by external force. As a result, the approach distance defining mechanism 56 realizes a mechanism that locks the approach distance from being changed by an external force.

The approach distance defining mechanism 56 is configured as described above, and the approach distance defining mechanism 56 is adjusted based on the control information transmitted from the contact member adjusting motor control unit 22, so that the approach of the winding unit 4 The distance is changed.

Next, a first embodiment of the control of the approach distance defining mechanism 56 will be described with reference to FIGS. In the following, a certain distance between the surface of the package optimal for capturing the upper thread and the suction port 50a is referred to as the optimal distance A, and the surface of the package and the suction port 50a are at the optimal distance A. The position of the suction port 50a is set as the optimum position H. Further, the distance that the suction port 50a can be closest to the package without the suction port 50a colliding with the package is defined as a critical approach distance B, and the width by which the position of the surface of the package moves in accordance with the change in the package diameter. The moving width is C.

FIG. 3 is an explanatory diagram of the optimum distance A, the limit approach distance B, and the movement width C. The optimum distance A and the limit approach distance B are distances determined by prior experiments and experience values, and vary depending on the type of yarn, the yarn count, and the winding environment. As described above, the optimum distance A is a fixed distance defined based on the yarn type and the yarn count of the yarn Y. Therefore, in order for the winding unit 4 to properly perform the upper yarn catching operation, the winding is not performed. It is necessary to keep the approach distance at the optimum distance A throughout the work. However, as the package diameter increases with the progress of the winding operation, the position of the surface of the package moves within the range of the movement width C in the figure. Therefore, in the winding unit 4 of this embodiment, the approach distance is optimized by moving the position of the suction port 50a within the range of the same width D as the movement width C in correspondence with the movement of the position of the surface of the package. A first adjustment to keep the distance A is made.

In the first adjustment, as shown in FIG. 4, the contact position F where the capture pipe 50 and the contact member 64 contact is changed based on the approach distance defining information received from the unit controller 14 by the approach distance defining mechanism 56. The As a result, the approach distance is maintained at the optimum distance A. The approach distance defining information is control information that defines a position where the approach distance defining mechanism 56 regulates the approach of the capture pipe 50 to the package P. The approach distance defining information is constructed by the package diameter detecting unit 24 and the setting unit 18, and is transmitted to the contact member adjusting motor 58 of the approach distance defining mechanism 56 by the contact member adjusting motor control unit 22.

The package diameter calculation unit 24 is connected to the measurement sensor 54a, and calculates the package diameter from the rotational speed of the traverse drum 54 received from the measurement sensor 54a. The setting unit 18 is configured to transmit various setting values to the winding unit main body 16. The contact member adjusting motor control unit 22 adjusts the approach distance defining mechanism 56 by transmitting various control information to the contact member adjusting motor 58 of the approach distance defining mechanism 56.

With these configurations, in the winding unit 4, the approach distance defining information is transmitted to the contact member adjusting motor 58 of the approach distance defining mechanism 56 while the winding operation is in progress, so that the approach distance is maintained at the optimum distance A. One adjustment is performed from time to time. This adjustment may be performed every predetermined time, or may be performed every predetermined operation (for example, yarn joining operation).

Since the first adjustment is performed at any time while the winding operation is in progress, as shown in FIG. 3, when the winding unit 4 stops the winding operation and executes the capturing operation, the position of the suction port 50a. Is adjusted to the optimum position H. However, even at the optimum position H, the upper thread catching operation may fail. The case where the upper thread catching operation fails at the optimum position H may be, for example, a case where the suction force of the suction port 50a is weakened due to an apparatus trouble or a case where the upper thread is strongly stuck to the package. In these cases, in the present invention, the second adjustment is performed to change the approach distance at the optimum distance A to a distance at which the upper thread can be captured more successfully than the optimum distance A. In the second adjustment, the approach distance is changed within a range farther than the limit approach distance B and closer to the optimum distance A. In the following, the distance at which the upper thread can be captured more reliably than the optimum distance A is referred to as a corrected optimum distance.

Next, the second adjustment performed in parallel with the first adjustment will be described. The winding unit 4 of the present embodiment repeatedly performs the capturing operation during the yarn joining operation. The repeated catching operation is an operation in which when the upper thread catching operation fails, the upper thread catching operation is repeated until it succeeds. The repeated catching operation is executed by the yarn catching control unit 30 provided in the unit control unit 14.

The yarn catching control unit 30 is configured to be able to transmit various control information to the supplemental pipe drive motor 50c. When receiving the yarn end catching signal from the determination unit 20 provided in the unit control unit 14, the yarn catching drive is driven. An upper thread catching work signal is transmitted to instruct the motor 50c to execute the upper thread catching work. Then, when the catch pipe 50 receives the upper thread catch work signal from the yarn catch control unit 30, the catch pipe 50 drives the supplementary pipe drive motor 50c to bring the suction port 50a closer to the surface of the package P as described above. It is configured to perform a yarn catching operation. The determination unit 20 will be described later.

In the second adjustment, as shown in FIG. 2, the approach distance defining mechanism 56 performs the above-described repeated capturing operation based on the optimum position adjustment information received from the unit control unit 14, so that the approach distance is corrected as the optimum distance. Changed to The optimum position adjustment information is control information for instructing to shorten the approach distance by a predetermined distance when the upper thread catching operation fails. The optimum position adjustment information is constructed by the determination unit 20 and the failure count unit 26.

The determination unit 20 is connected to an upper thread sensor 50d provided inside the catching pipe 50, and detects the success or failure of the upper thread catching operation based on whether or not the upper thread sensor 50d senses the upper thread. To do. The failure number counting unit 26 counts the number of times the upper thread catching operation failed detected by the determination unit 20 and transmits the counted number to the contact member adjustment motor control unit 22. The contact member adjustment motor control unit 22 is configured to transmit optimum position adjustment information to the contact member adjustment motor 56.

The contact part material adjustment motor control unit 22 is connected to the setting unit 18, receives the number of repetitions of the repeated capturing operation set in the setting unit 18, and captures the upper thread received from the failure number counting unit 26. Compare with the number of work failures. Then, the contact member adjustment motor control unit 22 is configured to determine whether or not to transmit the optimum position adjustment information to the contact member adjustment motor 56 based on the comparison result. Here, the number of repetitions of the repeated catching operation refers to the number of times the winding unit 4 tries the catching operation of the yarn end again when the yarn end catching operation fails. A method for comparing the number of repetitions of the repeated catching operation and the number of failures of the upper thread catching operation will be described later.

With these configurations, in the winding unit 4, when the number of repetitions in which the upper thread catching operation is set at the optimum position H fails, the position of the suction port 50 a is brought closer to the surface of the package by a predetermined distance. It is done. Thereby, in the winding unit 4, the second adjustment for adjusting the approach distance to the correction optimum distance is performed. The predetermined distance is defined by an arbitrary set value by an operator, an experience value determined by a yarn type and a yarn count, or the like.

However, since the winding unit 4 repeatedly performs the capturing operation as described above, the second adjustment is repeated even when the upper thread cannot be captured by the second adjustment. If the second adjustment is repeated without successfully capturing the upper thread, the suction port 50a eventually comes into contact with the package P. Therefore, in the winding unit 4 of the present embodiment, when the upper thread catching operation fails at the limit approach distance B, the repetitive catching operation is stopped, and the winding unit 4 stops the upper thread at the limit approach distance B. A process of notifying that the capturing operation has failed is executed.

In the above processing, when the yarn catching control unit 30 receives a determination result from the judging unit 20 that the upper yarn catching operation has failed at the limit approach distance B, the upper yarn catching operation is performed with respect to the catching pipe drive motor 50c. This is executed by turning on the display unit 55 without transmitting a signal. Thus, the operator can know that the winding unit 4 cannot perform the yarn end capturing operation even if the approach distance is changed by automatic operation, and is in a situation where the operator needs to take a treatment.

Next, the flow of the above process will be described. As shown in FIG. 2, the distance detection unit 28 is connected to the contact member adjustment motor control unit 22, and grasps the current approach distance based on the control information transmitted from the contact member adjustment motor control unit 22. Yes. The distance detection unit 28 stores the limit approach distance B set by the setting unit 18, detects that the approach distance has reached the limit approach distance B, and sends the detection result to the determination unit 20. Send. The determination unit 20 detects the failure of the upper thread catching operation based on the current approach distance received from the distance detection unit 28 and the limit approach distance B set by the setting unit 18. It is determined whether the failure of the catching operation has occurred at the limit approach distance B, and the judgment result is transmitted to the yarn catching control unit 30. When the yarn catching control unit 30 receives a judgment result from the judging unit 20 that the upper yarn catching operation failure has occurred at the limit approach distance B, the upper yarn of the winding unit 4 as described above. Is stopped and the display unit 55 is turned on.

With the above configuration, the first embodiment of the control of the approach distance defining mechanism 56 is executed.

Next, a specific procedure of the first embodiment of the control of the approach distance defining mechanism 56 of the present invention will be described with reference to FIG. FIG. 6 is a flowchart showing a first embodiment of control of the approach distance defining mechanism 56.

As shown in FIG. 6, first, the operator inputs information such as the yarn type and yarn count of the yarn Y and the number n of repetitions of the repetitive capturing operation by the operator. The limit distance B and the optimum distance A are set according to information such as the yarn type and yarn count of the yarn Y. Also, the number of repetitions n of the repeated catching operation is set to determine how many times the winding unit 4 performs the first adjustment triggered by the failure of the first yarn end catching operation (S101).

When the operator completes the setting for the setting unit 18, the operator operates the start switch of the winding unit 4 to start operation (S102).

When the operation is started, the yarn Y is supplied to the upper side of the winding unit 4 from the yarn supplying section of the winding unit 4, and the winding operation is started (S103). During the winding operation, the contact member adjusting motor control unit 22 constructs the approach distance defining information based on the optimum approach distance A received from the setting unit 18 and the package diameter received from the package diameter calculating unit 24, The first adjustment is performed by transmitting to the approach distance defining mechanism 56.

The occurrence of yarn breakage during the winding operation is detected by a yarn traveling sensor 46 provided in the yarn defect detecting device 40. When the yarn traveling sensor 46 senses the traveling of the yarn Y, the winding unit 4 determines that no yarn breakage has occurred, and continues the winding operation. On the other hand, if the yarn traveling sensor 46 cannot sense the traveling of the yarn, a yarn absence signal is transmitted to the unit controller 14 (S104).

The unit controller 14 determines that a yarn break has occurred when the yarn absence signal transmitted from the yarn traveling sensor 46 is received, and transmits a control signal for stopping the operation of the unit body 16 to the winding unit body 16. The winding unit main body 16 stops the winding operation by receiving a control signal for stopping the operation from the unit controller 14 (S105). Thereafter, the yarn catching control unit 30 of the unit control unit 14 transmits a catching work signal to the catching pipe 50 and the lower yarn catching pipe 48, and catches by the catching pipe 50 and the lower yarn catching pipe 48 that have received the catching work signal. The work is started (S106).

Next, the determination unit 20 determines whether the upper thread catching operation has succeeded or failed (S107). If the catching operation is successful, the upper yarn is guided to the yarn joining device 38, and the yarn joining device 38 performs the yarn joining operation with the lower yarn (S108). When the upper thread catching operation fails, the failure count counting unit 26 counts the number of times the upper thread catching operation failed received from the determination unit 20 and transmits the counted number to the contact member adjusting motor control unit 22. The contact member adjustment motor control unit 22 compares the number of failures counted by the failure number counting unit 26 with the number n of repetitions of the yarn catching operation set in S101. The contact member adjusting motor 22 performs the yarn end catching operation again when the number of failures of the upper yarn catching operation received from the failure count counting unit 26 is n or less. On the other hand, when the contact member adjusting motor control unit 22 receives n times of failure in the upper thread catching operation received from the failure frequency counting unit 26, the detection result is transmitted to the determination unit 20. (S109)

When the determination unit 20 receives a detection result indicating that the number of failure of the upper thread catching operation has reached n times from the contact member adjusting motor 22, the determination unit 20 determines that the upper thread catching operation has failed. It is further determined whether or not it occurred at the limit approach distance B. (S110)

When the determination unit 20 determines that the failure of the upper thread catching operation has not occurred at the limit approach distance B, the yarn catch control unit 30 transmits the optimum position adjustment information to the contact motor 56 and approaches the approach distance. The capturing operation is continued repeatedly while adjusting (S111). When the determination unit 20 determines that a failure in the upper thread catching operation has occurred at the limit approach distance B, the yarn catching control unit 30 repeatedly interrupts the catching operation and causes the display unit 55 to display an alarm ( S112), the flow is terminated.

By executing the flow from S103 to S111 described above, the winding unit 4 of the present invention can autonomously correct the failure factor of the upper thread catching operation.

The first embodiment of the control of the approach distance close defining mechanism 56 has been described above. Next, a second embodiment of the control of the approach distance defining mechanism 56 will be described.

As shown in FIG. 2, the second embodiment of the control of the approach distance defining mechanism 56 is based on correction information transmitted from the machine base control unit 6 provided in the yarn winding machine 2 to the unit control unit 14. The approach distance defining mechanism 56 is performed by changing the approach distance of each winding unit 4.

The correction information compares the take-up unit failure average with the machine stand failure average, and makes the approach distance closer to the take-up unit 4 that has transmitted a take-up unit failure average larger than the machine stand failure average. This is a control signal to be commanded. As described above, the repetitive catching operation is a work in which, when the upper thread catching operation is unsuccessful, the upper yarn catching operation is repeated until it succeeds. Refers to the repetition of capture operations until successful capture. The winding unit failure average is a value obtained by averaging the number of times that each winding unit 4 failed to catch the upper thread in a plurality of repeated catching operations in the past. The machine base failure average is an average value of the number of times that the upper yarn catching operation of the entire yarn winding machine 2 has failed, which is calculated by averaging the winding unit failure average over the entire yarn winding machine 2.

The winding unit failure average is constructed by the determination unit 20, the failure frequency counting unit 26, and the failure average calculation unit 32 of each winding unit 4. The machine failure average is calculated by the machine failure average calculation unit 8.

The failure average calculation unit 32 of each winding unit 4 receives the number of failures in which the upper yarn catching operation has failed in one repetitive catching operation detected by the failure number counting unit 26. Further, the failure average calculation unit 32 is configured to be able to store the number of failures in which the upper thread catching operation has failed in each repeated catching operation in the past multiple repeated catching operations. Then, the failure average calculation unit 32 calculates the winding unit failure average by averaging the number of failures in which the upper thread capturing operation has failed in one repeated capturing operation over the past plural repeated capturing operations, The winding unit failure average is transmitted to the machine failure average calculation unit 8 and the comparison determination unit 10 of the machine control unit 6.

The machine base failure average calculation unit 8 receives the winding unit failure average transmitted from each winding unit 4 and averages them to obtain the machine thread which is the number of times of the upper yarn catching operation failure of the whole yarn winding machine. The failure average is calculated and this machine failure average is transmitted to the comparison determination unit 10.

The comparison determination unit 10 compares the winding unit failure average received from the failure average calculation unit 32 of each winding unit 4 with the machine failure average received from the machine failure average calculation unit 8, and determines the magnitude of the comparison. Then, the determination result is transmitted to the command unit 12.

The command unit 12 is configured to transmit correction information to the winding unit 4 that has transmitted a winding unit failure average larger than the machine base failure average based on the determination result received from the comparison determination unit 10. ing.

With the above configuration, the second embodiment of the control of the approach distance defining mechanism 56 is executed.

Next, a specific procedure for executing the second embodiment of the control of the approach distance defining mechanism 56 of the present invention will be described with reference to FIG. FIG. 7 is a flowchart showing a second embodiment of the control of the approach distance defining mechanism 56 of the present invention.

As shown in FIG. 7, first, the machine unit failure average calculation unit 8 and the comparison determination unit 10 of the machine control unit 6 receive the winding unit failure average calculated in the winding unit that repeatedly executed the capturing operation. (S201). The machine base failure average calculation unit 8 calculates the machine base failure average by averaging the winding unit failure averages received from the plurality of winding units 4, and transmits the machine base failure average to the comparison determination unit 10 (S202).

Next, the comparison determination unit 10 compares the winding unit failure average received from the failure average calculation unit 32 of each winding unit with the machine failure average received from the machine failure average calculation unit 8. Furthermore, the comparison determination unit 10 determines the magnitude relationship between the machine base failure average and the winding unit failure average (S203).

And the instruction | command part 12 receives the determination result from the comparison determination part 10, and when the winding unit failure average is larger than the machine stand failure average, the winding unit 4 that has transmitted the winding unit failure average The correction information is transmitted to the contact member adjustment motor control unit 22 (S204). The contact member adjustment motor control unit 22 that has received the correction information adjusts the approach distance defining mechanism 56 so that the approach distance of the winding unit 4 is closer. In addition, when the winding unit failure average is smaller, the command of S204 is not performed, and the flow ends.

By executing the flow from S201 to S204 described above, the yarn winding machine 2 finds a winding unit having a low success rate of the upper yarn catching operation in the entire yarn winding machine, and the success rate is low. Adjustment that changes the approach distance of the winding unit can be performed.

The second embodiment of the control of the approach distance defining mechanism 56 has been described above. Next, a third embodiment of the control of the approach distance defining mechanism 56, which is a modification of the second embodiment of the control of the approach distance defining mechanism 56, will be described.

The third embodiment of the control of the approach distance defining mechanism 56 is similar to the second embodiment of the control of the approach distance defining mechanism 56 from the machine base control unit 6 provided in the yarn winding machine 2 to the unit control unit 14. The approach distance defining mechanism 56 changes the approach distance of each winding unit 4 based on the correction information transmitted.

The yarn winding machine 2 according to the present embodiment includes a setting unit 18 that sets the maximum number of repetitions n of the capturing operation in order to execute the repeated capturing operation of the winding unit 2. The yarn catching control unit 30 repeatedly executes the catching operation until the yarn end catching operation is successful, but stops the repeated catching operation when the number of repetitions reaches the set maximum repeat count n. Thereby, in the capturing operation of the yarn winder 2, it is possible to eliminate a wasteful operation of continuing the capturing operation until the yarn end cannot be captured. Alternatively, the catching operation is repeatedly executed until the yarn end catching operation reaches the set number of repetitions n. The failure count unit 26 counts the number of failures in the repeated capture operation. The failure frequency average calculation unit 32 calculates the winding unit failure average by averaging the failure frequency over a plurality of failure counts counted in the past.

With the configuration as described above, the yarn winding machine 2 according to the present embodiment receives the winding unit failure average from the winding unit 2 in which the repetition number n of the repeated capturing operation is set. Then, the yarn winding machine 2 according to the present embodiment compares the winding unit failure average with the machine base failure average calculated based on the winding unit failure average, and adjusts the approach distance of the winding unit 2. To do.

A specific procedure for executing the third embodiment of the control of the approach distance defining mechanism 56 of the present invention will be described with reference to FIG. FIG. 8 is a flowchart showing a third embodiment of the control of the approach distance defining mechanism 56 of the present invention.

As shown in FIG. 8, the same operations from S101 to S109 of the first embodiment of the control of the approach distance defining mechanism 56 are performed from S301 to S309 of the third embodiment of the control of the approach defining mechanism 56. Further, from S311 to S314 of the third embodiment of the control of the approach defining mechanism 56, the same operation as that of the second embodiment of the control of the approach distance defining mechanism 56 is performed.

Similar to the first embodiment of the control of the approach regulating mechanism 56, in this embodiment, if the upper thread catching operation fails, the catching operation is successful or the number of repeated catching operations is repeated up to n times. The capture operation is repeated until it is reached. In this embodiment, the number of failures is counted during the repetition of the capturing operation, and the number of failures is averaged over a plurality of failures counted in the past to calculate the winding unit failure average.

That is, the yarn winding machine 2 of the present embodiment takes up not only the case where the upper thread catching operation fails in S307 but also before the number of failed upper thread catching operations of the winding unit 4 reaches n times. Even when the unit 4 succeeds in the capturing operation, the winding unit failure average is transmitted to the yarn winding machine 2 in S310.

As described above, in the yarn winding machine 2 of this embodiment, since the winding unit 4 is set to n in S301, the winding unit that does not succeed in capturing the yarn end can capture the yarn end indefinitely. It is possible to prevent the work from being repeated. Thereby, the yarn winding machine 2 of the present embodiment can efficiently calculate the winding unit failure average in S309 and S310. That is, in the yarn winding machine 2, the success rate of the upper yarn catching operation of the entire yarn winding machine can be improved more quickly by finding a winding unit having a lower success rate of the upper yarn catching operation more efficiently. be able to.

Further, the second embodiment and the third embodiment of the control of the approach distance regulating mechanism 56 that is the adjustment of the approach distance by the yarn winding machine 2 are not intended to be executed together with the second adjustment. However, priority may be given to each adjustment and executed together. Further, if the limit approach distance B is defined and the upper thread catching operation fails at the limit approach distance B, the flow may be stopped.

Next, an approach distance defining mechanism 156 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a side view showing a contact member 164 and a contact member adjusting motor 158 according to another embodiment of the present invention.

As shown in FIG. 5, the approach distance defining mechanism 156 includes a cam 165 (contact member) formed in a circular shape, a contact member adjusting motor 158 attached to the cam 165, and an origin sensor 159. The shaft center of the contact member adjusting motor 158 is attached at a position shifted from the center of the cam 165. The origin sensor 159 determines an initial position of rotation of the cam 165. In the above configuration, the approach distance defining mechanism 156 includes a cam mechanism that adjusts the contact position H by rotating the cam 165 by driving the contact member adjusting motor 158.

In the approach distance defining mechanism 156 that employs the cam 165 as the contact member, the number of parts is reduced as compared with the case where a mechanism that transmits the power of the contact member adjustment motor 158 to the contact member using, for example, an air cylinder is used. It can be suppressed to a small amount, and the number of connecting portions between the contact member adjusting motor 158 and the contact member is small. As a result, the winding unit 4 is provided that is less likely to accumulate fluff in the approach distance regulating mechanism 156 and has excellent maintainability.

In the above embodiment, the winding unit 4 is set to perform the second adjustment every time the upper thread catching operation has failed n times in succession, but the timing of performing the second adjustment is The present invention is not limited to the above embodiment. For example, n = 1 may be set to be performed every time the upper thread catching operation fails. The winding unit 4 does not perform the second adjustment every time the upper thread catching operation fails the same number of times. For example, the winding unit 4 executes when the third, fifth, twelfth, and thirty times occur. For example, it can be set to be performed when the upper thread catching operation fails a different number of times.

In the above embodiment, the package diameter calculation unit 24 calculates the package diameter based on the rotational speed of the traverse drum 54, but the method for calculating the package diameter is not limited to the above embodiment. For example, the package diameter may be calculated by a method of detecting the relative position of the center of the package P (the movement angle of the cradle 52) with respect to the center of the traverse drum 54. Further, a sensor that detects the rotational speed of the traverse drum 54 and the package P may be provided, and the package diameter may be calculated based on the detected rotational speed.

In the above embodiment, the setting unit 18 is arranged in the unit control unit 14, but the place where the setting unit 18 is arranged is not limited to this. For example, the setting unit 18 may be configured to be disposed in the machine base control device 6.

In the above-described embodiment, the comparison determination unit 10 and the command unit 12 are arranged in the machine base control unit 6, but the place where the comparison determination unit 10 and the command unit 12 are arranged is not limited thereto. For example, the comparison determination unit 10 and the command unit 12 may be arranged in the unit control unit 14 and the unit control unit 14 of each winding unit 4 may be configured to receive the machine failure average from the machine control unit 6. In other words, the machine base failure average is received from the machine base control unit 6, and each winding unit 4 is configured to adjust the approach distance defining mechanism 56 by comparing the received machine base failure average with the winding unit failure average. May be.

In the above embodiment, the determination unit 20 detects the success or failure of the upper thread catching operation based on the upper thread sensing by the upper thread sensor 50d, but detects the success or failure of the upper thread catching operation. The detection means to perform is not limited to the above embodiment. For example, the success or failure of the upper yarn catching operation may be determined based on the detection of the yarn Y by the yarn traveling sensor 46 provided in the yarn defect detecting device 40.

2 Yarn winding machine 4 Winding unit 8 Machine base failure average calculation unit 10 Comparison determination unit 12 Command unit P Package B Limit approach distance F Contact position 18 Setting unit 20 Determination unit 22 Contact member adjustment motor control unit (position adjustment member control unit )
26 Failure Counting Unit 28 Distance Detection Unit 30 Yarn Capture Control Unit 32 Failure Average Calculation Unit 50 Capture Pipe 50a Suction Port 55 Display Unit 58 Contact Member Adjustment Motor (Position Adjustment Member)
60 Male thread 62 Female thread 64 Contact member 165 Cam

Claims (8)

A winding unit that winds a thread around a winding bobbin to form a package,
A suction port for sucking and capturing the yarn end present on the surface of the package;
A capture pipe having the suction port and configured to be movable to bring the suction port closer to the package;
A contact member that contacts the capture pipe and defines an approach distance that is a distance between the suction port and the surface of the package;
A position adjusting member that adjusts the approach distance by changing a contact position where the capture pipe and the contact member contact;
A winding unit comprising: a position adjusting member control unit that controls the position adjusting member. The winding unit according to claim 1,
The winding unit further comprising: a lock mechanism that prevents the contact position from being changed by contact between the capture pipe and the contact member. The winding unit according to claim 2,
The position adjustment member and the contact member are connected via the lock mechanism,
The winding mechanism is constituted by a male screw and a female screw. The winding unit according to claim 1,
The winding unit, wherein the contact member is a cam. The winding unit according to claim 1,
A judgment unit for judging success or failure of the yarn end catching operation by the catch pipe;
When the determination unit determines that the catching operation of the yarn end by the catching pipe has failed, the yarn catching control that repeatedly performs the catching operation of repeating the catching operation of the yarn end by the catching pipe until the catching operation of the yarn end succeeds. And
A failure frequency counting unit that counts the number of failures in which the capture pipe fails to capture the yarn end; and
Further comprising
The position adjustment member controller is
A winding unit that controls the position adjusting member according to the number of failures counted by the failure counting unit in the capturing operation. The winding unit according to claim 5,
A setting unit for setting a limit approach distance which is a distance at which the suction port can be closest to the package;
A distance detection unit that detects that the approach distance has reached the limit proximity distance set by the setting unit;
A display unit for displaying that the catch pipe has failed to catch the yarn end at the limit approach distance; and
The yarn catching control unit
When the determination unit determines that the catching pipe has failed to catch the yarn end at the limit approach distance, the catching pipe stops at the limit approach distance, and the catching pipe stops at the limit approach distance. A winding unit that displays that the edge capturing operation has failed. A yarn winding machine comprising a plurality of winding units according to claim 1,
Each winding unit
A judgment unit for judging success or failure of the yarn end catching operation by the catch pipe;
When the determination unit determines that the catching operation of the yarn end by the catching pipe has failed, the yarn catching control that repeatedly performs the catching operation of repeating the catching operation of the yarn end by the catching pipe until the catching operation of the yarn end succeeds. And
A failure frequency counting unit that counts the number of failures in which the capture pipe fails to capture the yarn end; and
A failure average calculating unit for calculating a winding unit failure average obtained by averaging the number of failures counted by the number of failure counting unit over the past plural times of the repeated capturing work;
Further comprising
Furthermore, the yarn winding machine
A machine failure average calculating unit that receives the winding unit failure average from each winding unit and calculates a machine failure average by averaging the plurality of winding unit failure averages;
A comparison and determination unit for comparing the winding unit failure average and the machine stand failure average, and determining the magnitude,
A command unit for instructing the winding unit determined by the comparison and determination unit to have a shorter approach distance, when the winding unit failure average is larger than the machine base failure average; Winding unit to be used. The yarn winding machine according to claim 7,
A setting unit for setting the number of repetitions of the repeated capture operation;
The yarn catching control unit repeatedly executes the catching operation repeatedly until the yarn end catching operation is successful, or until the yarn end catching operation reaches a set number of repetitions,
The failure count section counts the number of failures in the repeated capture operation,
The yarn winding machine, wherein the failure frequency average calculation unit calculates the winding unit failure average by averaging the failure frequency over a plurality of failure counts counted in the past.

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