阅读说明：本技术 纱线卷绕机及纺纱系统 (Yarn winding machine and spinning system ) 是由 村山贤一 福原修一 于 2021-04-20 设计创作，主要内容包括：本发明提供纱线卷绕机及纺纱系统。纱线卷绕机卷绕从精纺机经由纱管移送装置移送来的喂纱纱管的纱线而形成卷装。纱线卷绕机具备控制部。当在精纺机中喂纱纱管的纱线产生了局部不良的情况下,控制部获取精纺机针对该局部不良的产生而生成的第1纱线不良信息。纱线卷绕机在获取到喂纱纱管的第1纱线不良信息的情况下,当基于从获取到的第1纱线不良信息所涉及的喂纱纱管卷绕纱线时获取的纱线信息、和精纺机所生成的第1纱线不良信息而判断为纱线已从该喂纱纱管退绕至与第1纱线不良信息的局部不良对应的位置时,停止来自该喂纱纱管的纱线的卷绕。(The invention provides a yarn winding machine and a spinning system. The yarn winding machine winds a yarn of a yarn supplying bobbin transferred from a spinning machine via a bobbin transfer device to form a package. The yarn winding machine includes a control unit. When a local defect occurs in a yarn of a yarn supplying bobbin in a spinning machine, a control unit acquires 1 st yarn defect information generated by the spinning machine in response to the local defect. When the 1 st yarn defect information of the yarn supplying bobbin is acquired, the yarn winding machine stops the winding of the yarn from the yarn supplying bobbin when the yarn is determined to have been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information based on the yarn information acquired when the yarn is wound from the yarn supplying bobbin related to the acquired 1 st yarn defect information and the 1 st yarn defect information generated by the spinning machine.)

1. A yarn winding machine for winding a yarn of a yarn supplying bobbin transferred from a spinning machine via a bobbin transfer device to form a package,

the yarn winding machine is provided with a control part,

the control unit acquires 1 st yarn defect information generated by the spinning machine in response to a local defect occurring in the yarn of the yarn supplying bobbin in the spinning machine,

the control unit stops winding of the yarn from the yarn supplying bobbin when determining that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information, based on the yarn information acquired when the yarn is wound on the yarn from the yarn supplying bobbin related to the 1 st yarn defect information acquired and the 1 st yarn defect information generated by the spinning machine, in the case where the 1 st yarn defect information of the yarn supplying bobbin is acquired.

2. The yarn winding machine of claim 1,

and a control unit configured to discharge the yarn supplying bobbin as a defective bobbin when the control unit determines that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect in the 1 st yarn defect information of the yarn supplying bobbin, based on the yarn information.

3. The yarn winding machine according to claim 1 or 2,

the 1 st yarn defect information is information related to yarn breakage in the bottom of the yarn supplying bobbin.

4. The yarn winding machine according to any one of claims 1 to 3,

further comprising a yarn length measuring means for acquiring information on a total length of the yarn wound by the yarn winding machine or information on a length of the yarn unwound from the yarn supplying bobbin as the yarn information,

the control unit determines that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect in the 1 st yarn defect information, based on information on the total length of the yarn wound by the yarn winding machine calculated by the yarn length measuring mechanism or information on the length of the yarn unwound from the yarn supplying bobbin measured by the yarn length measuring mechanism.

5. The yarn winding machine according to any one of claims 1 to 4,

also provided is a yarn quality monitoring device for monitoring the state of the yarn and detecting yarn defects,

the control unit manages a detection frequency of the yarn defect measured by the yarn quality monitoring device as the yarn information, and determines that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information when the detection frequency of the yarn defect exceeds a predetermined frequency.

6. A spinning system, characterized in that,

a yarn winding machine and a spinning machine according to any one of claims 1 to 5,

the yarn supplying bobbin is transferred by the bobbin transfer device in a state of being mounted on a tray having a storage portion,

the spinning machine or the bobbin transfer device has an information writing section for writing the 1 st yarn defect information into the storage section,

the yarn winding machine includes an information reading unit configured to read the 1 st yarn defect information written by the information writing unit.

7. The spinning system of claim 6,

the spinning machine acquires 2 nd yarn defect information related to the unevenness of twist when the twist of the yarn supplying bobbin is uneven,

the spinning machine acquires 3 rd yarn defect information related to yarn breakage of 1 st or higher frequency when the yarn breakage of the yarn supplying bobbin occurs at 1 st or higher frequency,

the yarn winding machine does not wind the yarn from the yarn supplying bobbin when the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin is acquired.

8. The spinning system as recited in claim 7,

when the yarn winding machine acquires the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin, the yarn supplying bobbin is discharged as a defective bobbin without winding the yarn from the yarn supplying bobbin.

9. The spinning system of claim 6,

the spinning machine acquires 2 nd yarn defect information related to the unevenness of twist when the twist of the yarn supplying bobbin is uneven,

the spinning machine acquires 3 rd yarn defect information related to yarn breakage of 1 st or higher frequency when the yarn breakage of the yarn supplying bobbin occurs at 1 st or higher frequency,

the yarn winding machine determines whether or not the quality of the yarn supplying bobbin satisfies a predetermined quality reference value based on the yarn information acquired when the yarn is wound from the yarn supplying bobbin, when the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin is acquired,

the yarn winding machine stops winding of the yarn from the yarn supplying bobbin when it is determined that the quality reference value is not satisfied.

10. The spinning system of claim 9,

the spinning machine acquires 4 th yarn defect information related to a yarn breakage of the yarn supplying bobbin at a frequency of less than 1 st frequency and not less than 2 nd frequency,

the yarn winding machine determines whether or not the quality of the yarn supplying bobbin satisfies a predetermined quality reference value based on the yarn information acquired when the yarn is wound from the yarn supplying bobbin, when the 4 th yarn defect information of the yarn supplying bobbin is acquired,

the yarn winding machine stops winding of the yarn from the yarn supplying bobbin when it is determined that the quality reference value is not satisfied.

11. The spinning system as recited in claim 10,

and a yarn winding machine configured to discharge the yarn supplying bobbin as a defective bobbin when it is determined that the quality reference value is not satisfied.

12. Spinning system according to claim 8 or 11,

the bobbin transfer device includes a discharge device capable of discharging the defective bobbin discharged from the yarn winding machine out of a path.

13. A spinning system according to any one of claims 6 to 12,

the yarn winding machine acquires the 1 st yarn defect information by communication or operation input by an operator via an operation unit.

14. A spinning system according to any one of claims 6 to 13,

the control section executes the following processing:

a first process of grasping a yarn amount of the yarn supplying bobbin existing in the yarn winding machine and the bobbin transfer device;

a 2 nd process of calculating a yarn amount of the yarn supplying bobbin, which is wound by the final doffing in the spinning frame, in units of the yarn supplying bobbin; and

a 3 rd process of supplying a required amount of the yarn for full winding to a predetermined winding unit of the yarn winding machine,

in the process 2, both the normal yarn length and the defective yarn length are managed for the yarn supplying bobbin having the defective yarn,

in the 3 rd process, the yarn amount obtained by subtracting the defective yarn is calculated for the yarn supplying bobbin having the defective yarn, and the defective yarn is discharged without being wound.

Technical Field

The present invention relates to a yarn winding machine and a spinning system.

Background

A spinning system is known which includes a spinning machine that forms a yarn supplying bobbin around which a yarn is wound, and a yarn winding machine that winds the yarn of the yarn supplying bobbin transferred from the spinning machine via a bobbin transfer device to form a package (see, for example, international publication No. 2018/212293). In this spinning system, quality information on the quality of the yarn supplying bobbin is acquired, whether the quality of the yarn supplying bobbin satisfies a quality reference value is determined based on the quality information, and if it is determined that the quality reference value is not satisfied, the yarn winding of the yarn supplying bobbin by the yarn winding machine is prevented.

In general, a yarn having unstable yarn quality may be wound around the bottom of a yarn supplying bobbin (a portion where the yarn starts to be wound in a spinning machine) wound by a yarn winding machine. Due to such a local defect of the yarn supplying bobbin, there is a problem that the removal of the yarn defect and the yarn splicing operation often occur in the yarn winding machine. In this regard, in the above-described conventional spinning system, since the yarn winding machine can be prevented from winding the yarn supplying bobbin determined to be defective, this problem can be avoided, but a portion of the yarn supplying bobbin where the quality of the yarn is normal (a portion other than the local defect) is wasted.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a yarn winding machine and a spinning system that can suppress a reduction in production efficiency.

A yarn winding machine according to one aspect of the present invention is a yarn winding machine that winds a yarn of a yarn supplying bobbin transferred from a spinning machine via a bobbin transfer device to form a package, and the yarn winding machine includes a control unit that, when a local defect occurs in the yarn of the yarn supplying bobbin in the spinning machine, acquires 1 st yarn defect information generated by the spinning machine in response to the local defect, and when the 1 st yarn defect information of the yarn supplying bobbin is acquired, stops winding of the yarn from the yarn supplying bobbin when it is determined that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information based on the yarn information acquired when the yarn is wound on the yarn supplying bobbin related to the acquired 1 st yarn defect information and the 1 st yarn defect information generated by the spinning machine.

In this yarn winding machine, the yarn up to the position corresponding to the local defect (that is, the yarn of the portion having the normal yarn quality) of the yarn supplying bobbin related to the 1 st yarn defect information can be wound without waste. Therefore, a decrease in production efficiency can be suppressed.

In the yarn winding machine according to one aspect of the present invention, the control unit may discharge the yarn supplying bobbin as a defective bobbin when it is determined from the yarn information that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to a local defect in the 1 st yarn defect information of the yarn supplying bobbin. In this case, the yarn winding machine can reliably prevent the yarn having a locally defective yarn supplying bobbin from being wound. In addition, by preventing the predictable removal of the defective portion and the continuous occurrence of the yarn joining, the production efficiency in the yarn winding machine is also improved.

In the yarn winding machine according to one aspect of the present invention, the 1 st yarn defect information may be information related to yarn breakage at the bottom of the yarn supplying bobbin. In this case, the yarn winding machine can wind the yarn up to the bottom of the yarn supplying bobbin without waste. In general, the yarn quality at the bottom of the yarn supplying bobbin is often poor. Therefore, considering the information on the bottom yarn breakage can prevent the efficiency from being lowered due to the winding of the yarn, which is a local defect caused by the production failure of the spinning machine, by the yarn winding machine.

In the yarn winding machine according to one aspect of the present invention, the yarn winding machine may further include a yarn length measuring mechanism that acquires information on a total length of the yarn wound by the yarn winding machine or information on a length of the yarn unwound from the yarn supplying bobbin as the yarn information, and the control unit may determine that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information, based on the information on the total length of the yarn wound by the yarn winding machine calculated by the yarn length measuring mechanism or the information on the length of the yarn unwound from the yarn supplying bobbin measured by the yarn length measuring mechanism. In this case, since the control unit determines that the yarn has been unwound from the yarn supplying bobbin to the position corresponding to the local defect in the 1 st yarn defect information by the yarn length measuring mechanism, it can be more accurately determined that the yarn has been unwound from the yarn supplying bobbin to the position corresponding to the local defect in the 1 st yarn defect information. Only the defective portion of the yarn can be discarded.

In the yarn winding machine according to one aspect of the present invention, the yarn winding machine may further include a yarn quality monitoring device that monitors a state of the yarn and detects a yarn defect, wherein the control unit manages a detection frequency of the yarn defect measured by the yarn quality monitoring device as the yarn information, and determines that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information when the detection frequency of the yarn defect exceeds a predetermined frequency. In this case, the control unit can determine that the yarn has been unwound from the yarn supplying bobbin to a position corresponding to the local defect in the 1 st yarn defect information without adding a special device such as a yarn length measuring mechanism, and therefore, it is possible to implement one aspect of the present invention without increasing the cost.

The spinning system according to one aspect of the present invention may be a spinning system including the yarn winding machine and a spinning machine, wherein the yarn supplying bobbin is transported by a bobbin transporting device in a state of being mounted on a tray having a storage portion, the spinning machine or the bobbin transporting device may include an information writing portion configured to write the 1 st yarn defect information into the storage portion, and the yarn winding machine may include an information reading portion configured to read the 1 st yarn defect information written by the information writing portion. In this case, the yarn winding machine can acquire the 1 st yarn defect information of the yarn supplying bobbin by using the tray having the storage portion, the information writing portion, and the information reading portion.

In the spinning system according to one aspect of the present invention, the spinning machine acquires the 2 nd yarn defect information related to the twist unevenness when the twist unevenness occurs in the yarn of the yarn supplying bobbin, acquires the 3 rd yarn defect information related to the yarn breakage of the 1 st frequency or more when the yarn breakage of the yarn supplying bobbin occurs at the 1 st frequency or more, and the yarn winding machine does not perform the winding of the yarn from the yarn supplying bobbin when the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin is acquired. In this case, the yarn winding machine can prevent the yarn of the yarn supplying bobbin relating to the 2 nd yarn defect information or the 3 rd yarn defect information from being wound.

In the spinning system according to one aspect of the present invention, when the yarn winding machine acquires the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin, the yarn winding machine may discharge the yarn supplying bobbin as a defective bobbin without winding the yarn from the yarn supplying bobbin. In this case, the yarn winding machine can reliably prevent the yarn of the yarn supplying bobbin relating to the 2 nd yarn defect information or the 3 rd yarn defect information from being wound.

In the spinning system according to one aspect of the present invention, the spinning machine may acquire the 2 nd yarn defect information related to the twist unevenness when the twist unevenness occurs in the yarn of the yarn supplying bobbin, acquire the 3 rd yarn defect information related to the yarn breakage of the 1 st or higher frequency when the yarn breakage of the yarn supplying bobbin occurs at the 1 st or higher frequency, and the yarn winding machine may determine whether or not the quality of the yarn supplying bobbin satisfies a predetermined quality reference value based on the yarn information acquired when the yarn is wound from the yarn supplying bobbin when the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin is acquired, and may stop the winding of the yarn from the yarn supplying bobbin when the quality reference value is determined not to be satisfied. The defect information measured by the spinning machine cannot be confirmed as accurately as a yarn quality monitoring device such as a clearer provided in a yarn winding machine. Therefore, by checking the defective information measured by the spinning machine with a yarn quality monitoring device such as a clearer provided in the yarn winding machine, it is possible to verify the quality of the defective information measured by the spinning machine. After the primary verification, the defective information measured by the spinning machine can be evaluated based on the verification result, so that the reliability of the defective information measured by the spinning machine is improved.

In the spinning system according to one aspect of the present invention, the spinning machine may acquire 4 th yarn defect information regarding yarn breakage less than the 1 st frequency and not less than the 2 nd frequency when yarn breakage of the yarn supplying bobbin occurs at less than the 1 st frequency and not less than the 2 nd frequency, and the yarn winding machine may determine whether or not the quality of the yarn supplying bobbin satisfies a predetermined quality reference value based on the yarn information acquired when the yarn is wound from the yarn supplying bobbin when the 4 th yarn defect information of the yarn supplying bobbin is acquired, and may stop winding of the yarn from the yarn supplying bobbin when it is determined that the quality reference value is not satisfied. In this case, the yarn winding of the yarn winding machine is not always prevented for the yarn supplying bobbin relating to the 4 th yarn defect information, and the yarn can be wound in the yarn winding machine as usual when the yarn winding machine determines that the quality reference value is satisfied.

In the spinning system according to one aspect of the present invention, when the yarn winding machine determines that the quality reference value is not satisfied, the yarn winding machine may discharge the yarn supplying bobbin as a defective bobbin. In this case, the yarn winding machine can reliably prevent the yarn of the yarn supplying bobbin that does not satisfy the quality reference value from being wound.

In the spinning system according to one aspect of the present invention, the bobbin transfer device may include a discharge device capable of discharging a defective bobbin discharged from the yarn winding machine to the outside of the path. In this case, the defective bobbin can be eliminated in the bobbin transfer device.

In the spinning system according to one aspect of the present invention, the yarn winding machine may acquire the 1 st yarn defect information by communication or operation input by an operator via the operation unit. In this case, the yarn winding machine can acquire the 1 st yarn defect information of the yarn supplying bobbin by using communication and operation input.

In the spinning system according to one aspect of the present invention, the control unit may execute: a first process of grasping the yarn amount of a yarn supplying bobbin existing in a yarn winding machine and a bobbin transfer device; a 2 nd process of calculating a yarn amount of the yarn supplying bobbin wound by the final doffing in the spinning frame in units of the yarn supplying bobbin; and a 3 rd process of supplying a yarn amount necessary for full winding to a predetermined winding unit of the yarn winding machine, wherein in the 2 nd process, both a normal yarn length and a yarn length of the defective yarn are managed for the yarn supplying bobbin having the defective yarn, and in the 3 rd process, the yarn amount obtained by subtracting the defective yarn is calculated for the yarn supplying bobbin having the defective yarn, and the defective yarn is discharged without being wound. This makes it possible to supply the predetermined winding unit with the amount of yarn necessary for the full winding, and to prevent the batch from ending up with an incomplete winding.

According to the present invention, a spinning system capable of suppressing a reduction in production efficiency can be provided.

Drawings

Fig. 1 is a side view showing a spinning system according to an embodiment.

Fig. 2A is a perspective view showing the tray. Fig. 2B is a perspective view showing an empty bobbin. Fig. 2C is a perspective view showing a yarn supplying bobbin.

Fig. 3 is a side view showing a spinning unit of the spinning system of fig. 1.

Fig. 4 is a block diagram showing a main part of the spinning system of fig. 1.

Fig. 5 is a plan view showing the spinning system of fig. 1.

Fig. 6 is a front view showing an automatic winder of the spinning system of fig. 1.

Detailed Description

As shown in fig. 1, the spinning system 100 includes an automatic winder (yarn winding machine) 1 and a ring spinning machine (spinning machine) 2. The ring spinning machine 2 produces a yarn Y from the roving and winds the yarn Y around an empty bobbin E (a winding tube around which the yarn Y is not wound) to form a yarn supplying bobbin B. The automatic winder 1 winds a yarn Y of a yarn supplying bobbin B transferred (conveyed) from a ring spinning machine 2 via a bobbin transfer device 3 to form a package P. The bobbin transfer device 3 transfers a yarn-supplying bobbin B from the ring frame 2 to the automatic winder 1, and transfers an empty bobbin E from the automatic winder 1 to the ring frame 2.

The yarn supplying bobbin B and the empty bobbin E are respectively transferred in a state of being placed (placed) on the tray T. As shown in fig. 2A, the tray T includes a disk-shaped base portion T1, a pin T2 protruding upward from the base portion T1, and an RF (Radio Frequency) tag (storage portion) T3 provided on the base portion T1. The RF tag T3 may be built in the base portion T1 or may be attached to the outer surface of the base portion T1. The RF tag T3 is not limited to a rectangular shape as shown in the drawing, and may be, for example, a doughnut shape (ring shape). Identification information for identifying the tray T provided with the RF tag T3 is stored in the RF tag T3.

As shown in fig. 2B and 2C, the yarn supplying bobbin B and the bobbin E as the winding tube are respectively placed on the tray T with the top Eb of the bobbin E facing upward by inserting a pin T2 into the bottom Ea of the bobbin E. The RF tag T3 stores yarn defect information relating to a defect in the yarn Y mounted on the yarn supplying bobbin B of the tray T. In the spinning system 100, the state of the yarn supplying bobbin B mounted on the tray T is managed by an RFID (Radio Frequency Identification) technique. The configuration of the tray T is not limited to the above-described configuration. For example, the base portion T1 may not be disc-shaped, and the method of placing the yarn supplying bobbin B and the empty bobbin E may not be insertion of the pin T2. The RF tag T3 may be provided at any position as long as it can be read and written by the RF writer (information writing unit) 31 and the RF readers (information reading units) 18 and 41, which will be described later.

[ Structure of Ring spinning frame 2 ]

The ring spinning frame 2 performs a spinning process that is a previous process of the automatic winder 1. As shown in fig. 1, the ring spinning frame 2 includes a spinning frame controller 21 that controls the operation of the ring spinning frame 2, and a plurality of spinning units 20 that form yarn supplying bobbins B. The spinning machine deck control device 21 is constituted by an electronic control Unit having, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), a communication device, a storage device, and the like. The spinning machine stand control device 21 includes a display unit 21a such as a display and an operation unit 21b such as an input key. The display unit 21a displays the operating state of each spinning unit 20. In the operation unit 21b, various operation inputs are made by an operator or the like. The display unit 21a and the operation unit 21b may be formed of touch panels.

As shown in fig. 3, the spinning unit 20 has a drafting device 22 and a twisting device 23. The draft device 22 includes a back roller pair 22a, a middle roller pair 22b, and a front roller pair 22 c. The back roller pair 22a, the middle roller pair 22b, and the front roller pair 22c are each composed of a bottom roller and a top roller. A tangential belt is stretched over each roller constituting the middle roller pair 22 b. In the draft device 22, the roving Y1 unwound from the roving bobbin is drafted by rotating the rear roller pair 22a, the middle roller pair 22b, and the front roller pair 22c at a predetermined speed ratio.

The twisting device 23 has a spindle 24, a ring rail 25, a ring 26, and a traveler 27. The spindle 24 rotates the bobbin E while holding the bottom Ea of the bobbin E with the top Eb of the bobbin E facing upward. The ring plate 25 is movable in the axial direction of the bobbin E. The ring 26 is fixed to the ring plate 25. The traveler 27 is supported by the ring 26 and can move along the ring 26.

In the twisting device 23, the roving Y1 drafted in the draft device 22 is inserted into the gap between the ring 26 and the traveler 27, and the end of the roving Y1 is fixed to the bobbin E. In this state, when the bobbin E is rotated by the spindle 24, the traveler 27 is pulled by the roving Y1 and moves along the ring 26. At this time, the ring plate 25 reciprocates within a predetermined range along the axial direction of the bobbin E, and gradually moves from the bottom Ea side to the top Eb side. In the twisting device 23, the rotation of the traveler 27 is slower than the rotation of the bobbin E, and the roving yarn Y1 is twisted to generate the yarn Y, which is wound around the bobbin E to form the yarn supplying bobbin B.

The ring spinning machine 2 having the plurality of spinning units 20 configured as described above is configured as a so-called one-shot doffing type. That is, the ring spinning machine 2 stores a plurality of empty bobbins E transferred from the automatic winder 1 by the bobbin transfer device 3 in advance, and places the empty bobbins E at the respective spinning units 20 at once to start winding the yarn Y at once. When the yarn Y is completely wound in each of the spinning units 20 to form the yarn supplying bobbin B, the ring spinning frame 2 drops (doffing) all the yarn supplying bobbins B at once. Then, the ring spinning frame 2 pulls out the empty bobbins E stored during this time from the tray T, places them on the respective spinning units 20 at once again, and places the doffed yarn supplying bobbins B on the tray T at once instead. The doffed yarn supplying bobbin B is transferred to the automatic winder 1 via the bobbin transfer device 3.

As shown in fig. 4, a defect information acquiring unit 28 is provided in each of the plurality of spinning units 20 included in the ring spinning machine 2. The defect information acquiring unit 28 acquires yarn defect information of the yarn supplying bobbin B formed by the spinning unit 20. Further, the defective information acquiring unit 28 may be provided in one for two or more spinning units 20 or in plural for each spinning unit 20. A known sensor or device can be used as the bad information acquisition unit 28. For example, the defect information acquiring unit 28 may be a sensor for detecting the state of the yarn Y produced in the spinning unit 20 (presence or absence of yarn breakage, thickness abnormality, or the like), a sensor for detecting the state of each part of the spinning unit 20 (installation defect, consumption of equipment or parts, or the like), a sensor for detecting the operating state of the spinning unit 20 (formation speed of the yarn supplying bobbin B, or the like), or the like.

When a local defect occurs in the yarn Y of the yarn supplying bobbin B, the defect information acquiring unit 28 acquires 1 st yarn defect information related to the local defect as yarn defect information. The 1 st yarn defect information is information generated by the ring spinning machine 2 for the occurrence of the local defect. The local defect of the yarn Y in the 1 st yarn defect information is a yarn breakage occurring at a certain frequency or more at the bottom of the yarn supplying bobbin B (a portion of the ring spinning machine 2 where the yarn Y starts to be wound). That is, the 1 st yarn defect information is information related to yarn breakage at the bottom of the yarn supplying bobbin B. The frequency of occurrence of yarn breakage refers to the number of times of occurrence of yarn breakage per unit time or per unit length involved in winding of the yarn Y. The certain frequency is a preset value. The constant frequency may be input and changed by an operator via the operation unit 21 b. The 1 st yarn defect information is not limited as long as it is information on a local defect of one yarn supplying bobbin B.

When the yarn Y of the yarn supplying bobbin B has a twist irregularity, the defect information acquiring unit 28 acquires 2 nd yarn defect information related to the twist irregularity as yarn defect information. The 2 nd yarn defect information is information generated by the ring spinning machine 2 for the occurrence of the twist unevenness. Whether or not the twist unevenness occurs can be judged by a known method. When a yarn break of the yarn Y of the yarn supplying bobbin B occurs at the 1 st frequency or higher, the defect information acquiring unit 28 acquires the 3 rd yarn defect information regarding the yarn break at the 1 st frequency or higher as the yarn defect information. The 3 rd yarn defect information is information generated by the ring spinning machine 2 for the occurrence of the yarn breakage of the 1 st frequency or more. The defect information acquiring unit 28 acquires 4 th yarn defect information regarding a yarn breakage of the yarn Y of the yarn supplying bobbin B at a frequency of less than 1 st frequency and not less than 2 nd frequency as the yarn defect information when the yarn breakage occurs at the frequency of less than 1 st frequency and not less than 2 nd frequency. The 4 th yarn defect information is information generated by the ring spinning frame 2 for the occurrence of the yarn breakage of less than the 1 st frequency and not less than the 2 nd frequency. The 3 rd yarn defect information and the 4 th yarn defect information are related to the yarn breakage of the entire one yarn supplying bobbin B. The 1 st frequency and the 2 nd frequency are preset values. The 1 st frequency and the 2 nd frequency may be input and changed by an operator via the operation unit 21 b. For example, it can be set as follows: the 3 rd yarn defect information is acquired when Y or more yarn breaks are generated during the yarn length Xm as the 1 st frequency, and the 4 th yarn defect information is acquired when less than Y and Z (Y > Z) or more yarn breaks are generated during the yarn length Xm.

The ring spinning frame 2 is provided with a quality control unit 29. The quality control unit 29 manages the yarn defect information acquired by the defect information acquiring unit 28. The quality control unit 29 outputs the managed yarn defect information to the RF writer 31 of the bobbin transfer device 3.

As shown in fig. 5, the ring spinning frame 2 includes a path L2 for transferring the tray T and a conveyor C2. The path L2 includes a path L21 for transferring the tray T on which the yarn supplying bobbin B formed by each of the spinning units 20 is placed to the bobbin transfer device 3, and a path L22 for receiving the tray T on which the empty bobbin E is placed from the bobbin transfer device 3. The conveyer C2 transports the tray T on which the yarn supplying bobbin B or the empty bobbin E is mounted along the path L2.

[ Structure of automatic winder 1 ]

As shown in fig. 4 and 6, the automatic winder 1 includes a plurality of winding units 10 that form a package P from a yarn supplying bobbin B, a doffing device 19 that doffs the package P, a winding machine base control device 11 that controls the respective winding units 10 and the doffing device 19, and a clearer management device 51.

As shown in fig. 5, the automatic winder 1 includes a path L1 for transferring the tray T and a conveyor C1. The path L1 includes a path L11 for transferring the tray T on which the yarn supplying bobbin B is mounted, which is transferred from the bobbin transfer device 3, to each winding unit 10, and a path L12 for transferring the tray T on which the empty bobbin E on which the yarn Y is wound in the winding unit 10 is mounted, to the bobbin transfer device 3. The conveyer C1 transports the tray T on which the yarn supplying bobbin B or the empty bobbin E is mounted along the path L1.

As shown in fig. 6, the winding unit 10 includes, in order from the upstream side to the downstream side of the yarn path, a yarn feeding device 12, a tension applying device 13, a yarn splicing device 14, a yarn clearer 15 (hereinafter simply referred to as a clearer), and a winding device 16, and the winding device 16 is provided with a traverse drum that applies a rotational force to the package P and traverses the yarn Y to the left and right. As shown in fig. 4, the winding unit 10 includes a unit control unit 17 and an RF reader (information reading unit) 18. As the RF reader 18, an RF reader/writer having a write function can be used.

The yarn supplying device 12 supports the yarn supplying bobbin B transferred through the path L11 and assists unwinding of the yarn Y of the yarn supplying bobbin B. The yarn feeding device 12 discharges the empty bobbin E after all the yarns Y are unwound to the path L12. The tension applying device 13 applies a predetermined tension to the yarn Y traveling from the yarn feeding device 12 toward the winding device 16. The yarn joining device 14 is a device for connecting ends of the yarn Y that has been cut for some reason, such as cutting the yarn Y by detecting a yarn defect.

The clearer 15 monitors the state of the yarn Y traveling from the yarn feeding device 12 toward the winding device 16 between the yarn feeding device 12 and the winding device 16, and detects a yarn defect. The result detected by the clearer 15 of each winding unit 10 is sent to the clearer management device 51 and managed in the clearer management device 51. The clearer 15 determines whether the detected yarn defect should be removed based on the set clearing conditions. When it is determined that the yarn defect should be removed, the yarn Y is cut (cut) by a cutter in order to remove the yarn defect. The cutter is attached to the clearer 15. However, the cutter may be provided separately from the clearer 15. The yarn clearer management device 51 records and manages information on the generated defect, the number of yarn breaks (the number of times the yarn Y is cut to remove the defect), and yarn quality information on the variation in yarn thickness, the pile length, and the like, based on the result detected by the yarn clearer 15.

The winding device 16 unwinds the yarn Y from the yarn supplying bobbin B supported by the yarn supplying device 12, and winds the unwound yarn Y to form a package P. The RF reader 18 reads the yarn defect information of the yarn supplying bobbin B transferred from the RF tag T3 on which the tray T of the yarn supplying bobbin B transferred to the winding unit 10 is placed, in a non-contact manner.

The unit control section 17 is constituted by an electronic control unit having a CPU, a ROM, a RAM, an EEPROM, a communication device, a storage device, and the like. The unit control unit 17 controls the operations of the respective units of the winding unit 10 based on instructions from the winding machine base control device 11 and the like. The unit control portion 17 recognizes the yarn information acquired when the yarn Y is wound around the yarn supplying bobbin B based on the detection result detected by the clearer 15. The yarn information includes at least one of an elapsed time from the start of winding the yarn Y on the yarn supplying bobbin B, information on the frequency of yarn breakage, specific defect information, and yarn quality information. The information on the length of the wound yarn Y is measured by the winding device 16 or a dedicated yarn length sensor (not shown) provided separately, and is sent to the unit control unit 17. The information on the length of the yarn Y transmitted to the unit control portion 17 is transmitted to the clearer 15 by the unit control portion 17.

When the yarn defect information of the yarn supplying bobbin B is acquired from the RF reader 18, the unit control section 17 controls the operation of the winding unit 10 based on the yarn defect information and the yarn information. Specifically, when the 1 st yarn defect information is acquired, if it is determined that the yarn Y has been unwound from the yarn supplying bobbin B to a position corresponding to the local defect in the 1 st yarn defect information based on the yarn information acquired when the yarn Y is wound on the yarn supplying bobbin B and the 1 st yarn defect information, the unit control portion 17 stops the winding of the yarn Y on the yarn supplying bobbin B, and forcibly discharges the yarn supplying bobbin B to the path L12 as the defective bobbin B1. The unit controller 17 transmits the identification information of the tray T on which the defective bobbin B1 is mounted to the discharge controller 42 described later as information for identifying the defective bobbin B1.

For example, when the local defect of the yarn Y in the 1 st yarn defect information is a yarn defect at the bottom of the yarn supplying bobbin B, the unit control portion 17 determines whether the yarn Y has already been unwound from the yarn supplying bobbin B to the bottom or its periphery based on the yarn information. For example, when the total length of the yarn Y unwound from the supplied yarn supplying bobbin B and wound into the package P reaches a predetermined length (e.g., 1200m), the unit control portion 17 determines that the yarn Y has been unwound from the yarn supplying bobbin B to the bottom or the periphery thereof. Alternatively, the unit control portion 17 determines that the yarn Y has already been unwound from the yarn supplying bobbin B to the bottom portion or the periphery thereof when the elapsed time from the start of winding of the yarn supplying bobbin B reaches a predetermined time. Alternatively, the unit control portion 17 determines that the yarn Y has been unwound from the yarn supplying bobbin B to the bottom portion or the periphery thereof when the frequency of yarn breakage (detection of yarn defects) during winding of the yarn supplying bobbin B exceeds a predetermined frequency. When determining that the yarn Y has been unwound from the yarn supplying bobbin B to the bottom or its periphery, the unit control portion 17 stops the winding of the yarn Y and forcibly discharges a defective bobbin B1 having a yarn remainder at the bottom to the path L12.

When the 2 nd yarn defect information or the 3 rd yarn defect information is acquired, the unit control unit 17 does not wind the yarn Y from the yarn supplying bobbin B, and discharges the yarn supplying bobbin B as it is to the path L12 as a defective bobbin B1. The unit controller 17 transmits the identification information of the tray T on which the defective bobbin B1 is mounted to the discharge controller 42 described later as information for identifying the defective bobbin B1.

When the 4 th yarn defect information is acquired, the unit control portion 17 determines whether or not the quality of the yarn supplying bobbin B satisfies a predetermined quality reference value based on the yarn information acquired when the yarn Y is wound from the yarn supplying bobbin B. When determining that the quality reference value is not satisfied, the unit control unit 17 stops winding of the yarn Y from the yarn supplying bobbin B and discharges the yarn Y to the path L12 as a defective bobbin B1. The quality reference value can be changed by an operator via the operation unit 11 b. The determination as to whether or not the quality of the yarn supplying bobbin B satisfies the quality reference value can be performed by a known determination method. The unit controller 17 transmits the identification information of the tray T on which the defective bobbin B1 is mounted to the discharge controller 42 described later as information for identifying the defective bobbin B1.

When the yarn defect information is not acquired, the unit control unit 17 controls the operation of each part of the winding unit 10 to supply the yarn Y mounted on the yarn supplying bobbin B of the yarn supplying device 12 to the winding device 16.

The doffing device 19 doffs the package P formed by each winding unit 10. The doffing device 19 is provided one for each of the plurality of winding units 10. The doffing device 19 feeds the package P after doffing to a predetermined position (for example, a conveyor belt provided behind the machine table).

The winding machine base control device 11 is constituted by an electronic control unit having a CPU, a ROM, a RAM, an EEPROM, a communication device, a storage device, and the like, for example. As shown in fig. 4 and 6, the winding machine base control device 11 includes a display unit 11a and an operation unit 11 b. The display unit 11a displays at least the winding conditions and the operation data in the winding unit 10. In the operation unit 11b, various operation inputs are made by an operator or the like. The display unit 11a and the operation unit 11b may be formed of a touch panel. The winding machine base control device 11 is connected to the clearer management device 51 and the bobbin transfer device control unit 39.

[ Structure of bobbin transfer device 3 ]

As shown in fig. 5, the bobbin transfer device 3 transfers a yarn-supplied bobbin B from the ring frame 2 to the automatic winder 1 and transfers an empty bobbin E from the automatic winder 1 to the ring frame 2 as described above. The bobbin transfer device 3 includes a path L3 for transferring the tray T and a conveyor C3. The path L3 includes a path L31 for transferring the tray T on which the yarn supplying bobbin B is mounted, which is transferred from the ring frame 2, to the automatic winder 1, and a path L32 for transferring the tray T on which the empty bobbin E on which the yarn Y is wound in the automatic winder 1 is mounted to the ring frame 2. The path L3 includes bypass paths L33 and L34 that connect the path L31 and the path L32. The bypass path L33 is provided on the automatic winder 1 side of the bypass path L34. In this way, the path for transferring the yarn-fed bobbin B and the empty bobbin E between the automatic winder 1 and the ring spinning frame 2 is constituted by the path L2 provided in the ring spinning frame 2, the path L3 provided in the bobbin transfer device 3, and the path L1 provided in the automatic winder 1.

The bobbin transfer device 3 includes a bobbin transfer device control unit 39, an RF writer (information writing unit) 31, a remaining yarn amount confirmation sensor 32, a yarn end preparation device 33, a yarn presence/absence confirmation sensor 34, a remaining yarn removing device 35, and a defective bobbin discharging device (discharging device) 4. The RF writer 31 is provided in the vicinity of a path L31 for transferring the yarn supplying bobbin B formed by the ring spinning frame 2 to the automatic winder 1. When the yarn supplying bobbin B is transferred from the ring frame 2 to the automatic winder 1, the bobbin transfer device controller 39 writes the yarn defect information (any of the 1 st to 4 th yarn defect information) in the yarn supplying bobbin B in a non-contact manner to the RF tag T3 of the tray T on which the yarn supplying bobbin B is placed by the RF writer 31. The bobbin transfer device controller 39 is connected to the winding machine base controller 11 of the automatic winder 1.

The RF writer 31 is not limited to be provided in the bobbin transfer device 3. An RF writer 31 may be provided at an outlet in the transfer direction of the yarn supplying bobbin B of the ring spinning frame 2. In addition, an RF writer 31 may be provided for each spinning unit 20. In the case where different trays are used in the ring spinning machine 2 and the automatic winder 1, the bobbin transfer device 3 may further include a transfer unit, and the yarn-supplying bobbins B may be transferred from the tray for the ring spinning machine 2 to the tray for the automatic winder 1 in the transfer unit. In this case, the RF writer 31 may be provided at the transfer portion or at a position slightly separated from the transfer portion toward the downstream side in the transfer direction of the yarn supplying bobbin B, and may write information on the yarn supplying bobbin B to the RF tag attached to the tray for the automatic winder 1.

The remaining yarn amount confirmation sensor 32 detects the remaining yarn amount of the bobbins (the yarn supplying bobbin B and the empty bobbin E) transferred along the path L31. When the bobbin conveyed along the path L31 is the yarn supplying bobbin B having (remaining) the yarn Y, the yarn end preparing device 33 performs the yarn end processing on the yarn supplying bobbin B so that the yarn end can be caught in the automatic winder 1. When the bobbin conveyed along the path L31 is an empty bobbin E with no yarn Y remaining, the yarn end preparing device 33 does not perform the yarn end processing. The conveyer C3 transfers the yarn supplying bobbin B, which has been processed by the yarn end preparation device 33, to the automatic winder 1 along the path L31. When the bobbin transferred along the path L31 is detected by the remaining yarn amount detection sensor 32 as an empty bobbin E on which the yarn Y is not remaining, the conveyer C3 transfers the empty bobbin E from the path L31 to the path L32 via the bypass path L33.

The yarn presence/absence detection sensor 34 detects whether or not the yarn Y remains on the bobbin (the yarn supplying bobbin B or the empty bobbin E) conveyed along the path L32. When the bobbin conveyed along the path L32 is the yarn supplying bobbin B on which the yarn Y remains, the conveyer C3 conveys the yarn supplying bobbin B on which the yarn Y remains from the path L32 to the excess yarn removing device 35 via the bypass path L34. The residual yarn removing device 35 removes the yarn Y from the yarn supplying bobbin B, which has been transported along the bypass path L34 and has the yarn Y remaining therein, to form an empty bobbin E. The empty bobbin E from which the yarn Y has been removed by the remaining yarn removing device 35 is transferred from the bypass path L34 to the path L31 by the conveyer C3.

As shown in fig. 4 and 5, the defective bobbin discharger 4 is a device capable of discharging the defective bobbin B1 out of the path L3. The defective bobbin discharging device 4 includes an RF reader 41, a discharge control unit 42, a defective bobbin discharging path L4, and a conveyor C4. The defective bobbin discharge path L4 branches off from a middle portion of the path L32 for transferring the tray T from the automatic winder 1 to the ring spinning frame 2. The conveyor C4 takes the tray T on which the defective bobbin B1 is mounted from the path L32 into the defective bobbin discharge path L4 under the control of the discharge controller 42. Instead of the defective bobbin discharge path L4, an automatic drawer device that pinches and discharges the defective bobbin B1 may be used.

The RF reader 41 is provided in the vicinity of the path L32 and is positioned closer to the automatic winder 1 than the connection portion between the path L32 and the defective bobbin discharge path L4. The RF reader 41 reads the identification number stored in the RF tag T3 of the tray T transferred along the path L32 in a non-contact manner. The discharge control unit 42 acquires identification information of the tray T on which the defective bobbin B1 is placed from the unit control unit 17. The discharge controller 42 controls the conveyor C4 to discharge the defective bobbin B1 from the path L32 to the defective bobbin discharge path L4 based on the identification number read by the RF reader 41 and the identification number acquired from the unit controller 17.

In the automatic winder 1 configured as described above, the yarn Y of the yarn supplying bobbin B transferred from the ring spinning machine 2 via the bobbin transfer device 3 is wound to form a package P. Here, when a local defect occurs in the yarn of the yarn supplying bobbin B in the ring spinning machine 2, the unit control section (control section) 17 of the automatic winder 1 acquires the 1 st yarn defect information generated by the ring spinning machine 2 in response to the local defect. In the automatic winder 1, when the 1 st yarn defect information of the yarn supplying bobbin B is acquired, if it is determined that the yarn is unwound from the yarn supplying bobbin B to a position corresponding to a local defect of the 1 st yarn defect information based on the yarn information acquired when the yarn Y is wound on the yarn supplying bobbin B related to the acquired 1 st yarn defect information and the 1 st yarn defect information generated by the ring spinning frame 2, the winding of the yarn Y from the yarn supplying bobbin B is stopped. Therefore, according to the spinning system 100, the yarn Y (i.e., the yarn Y of the portion having the normal yarn quality) up to the position corresponding to the local defect of the yarn supplying bobbin B related to the 1 st yarn defect information can be wound in the automatic winder 1 without waste. Therefore, a decrease in production efficiency can be suppressed. Here, the yarn supplying bobbin B related to the 1 st yarn defect information is not limited to the yarn supplying bobbin itself that has acquired the 1 st yarn defect information. When it is estimated that the same 1 st yarn defect exists in another yarn supplying bobbin B of the same batch as the yarn supplying bobbin B from which the 1 st yarn defect information is measured, it is possible to treat the yarn supplying bobbin B relating to the 1 st yarn defect information including another yarn supplying bobbin B of the same batch as the yarn supplying bobbin B from which the 1 st yarn defect information is measured.

When determining from the yarn information of the yarn Y that the yarn Y has been unwound from the yarn supplying bobbin B to a position corresponding to a local defect in the 1 st yarn defect information of the yarn supplying bobbin B, the unit control portion 17 discharges the yarn supplying bobbin B as a defective bobbin B1. In this case, the automatic winder 1 can reliably prevent the yarn Y having a local defect on the yarn supplying bobbin B from being wound. In addition, by preventing the predictable removal of the defective portion and the continuous occurrence of the yarn joining, the production efficiency in the automatic winder 1 is also improved.

In the automatic winder 1, the 1 st yarn defect information is information related to yarn breakage in the bottom of the yarn supplying bobbin B. In this case, the automatic winder 1 can wind the yarn Y up to the bottom of the yarn supplying bobbin B without waste. In general, the yarn Y at the bottom of the yarn supplying bobbin B is often inferior in quality. Therefore, considering the information on the bottom yarn breakage can prevent the efficiency from being lowered due to the winding of the yarn Y, which is a local defect caused by the production failure of the ring frame 2, by the automatic winder 1.

In the automatic winder 1, the yarn information includes at least one of information relating to the total length of the yarn Y wound by the automatic winder 1, information relating to the length of the yarn Y unwound from the yarn supplying bobbin B, and information relating to the frequency of yarn breakage occurring in the automatic winder 1. In this case, it is possible to specifically determine that the yarn Y has already been unwound from the yarn supplying bobbin B to a position corresponding to the local defect. As described above, the information on the total length of the yarn Y wound by the automatic winder 1 or the information on the length of the yarn Y unwound from the yarn supplying bobbin B is obtained by the yarn length measuring mechanism. The yarn length measuring mechanism includes a traverse drum provided in the winding device 16, a dedicated yarn length sensor (not shown) provided separately, and a unit control section 17. The yarn length measuring means calculates information on the total length of the yarn Y wound by the automatic winder 1 or information on the length of the yarn Y unwound from the yarn supplying bobbin B based on the number of rotations of the traverse drum provided in the winding device 16, or measures information on the total length of the yarn Y wound by the automatic winder 1 or information on the length of the yarn Y unwound from the yarn supplying bobbin B by a separately provided dedicated yarn length sensor (not shown). The result calculated from the number of rotations of the traverse drum or the result measured by the yarn length sensor is sent to the unit control section 17, and is managed as the total length of the yarn Y wound by the automatic winder 1 or the length of the yarn Y unwound from the yarn supplying bobbin B. The information on the length of the yarn Y transmitted to the unit control portion 17 is transmitted to the clearer 15 by the unit control portion 17. The information on the total length of the yarn Y wound by the automatic winder 1 and the information on the length of the yarn Y unwound from the yarn supplying bobbin B may be managed by using the traveling speed of the yarn Y and the traveling time of the yarn Y. Instead of the unit controller 17 managing information on the total length of the yarn Y wound by the automatic winder 1 and information on the length of the yarn Y unwound from the yarn supplying bobbin B, a controller for management may be provided in a dedicated yarn length sensor.

The automatic winder 1 further includes a clearer 15 (yarn quality monitoring device) for monitoring the state of the yarn Y and detecting a yarn defect, and the unit control unit 17 manages the detection frequency of the yarn defect measured by the clearer 15 as yarn information, and determines that the yarn Y has been unwound from the yarn supplying bobbin to a position corresponding to a local defect in the 1 st yarn defect information when the detection frequency of the yarn defect exceeds a predetermined frequency. In this case, since the unit control section 17 can determine that the yarn Y has been unwound from the yarn supplying bobbin to a position corresponding to the local defect of the 1 st yarn defect information without adding a special device such as a yarn length measuring mechanism, the automatic winder 1 can be realized without increasing the cost.

The spinning system 100 includes an automatic winder 1 and a ring spinning frame 2. The yarn supplying bobbin B is transferred by the bobbin transfer device 3 in a state of being placed on a tray T having an RF tag T3. The bobbin transfer device 3 includes an RF writer 31 for writing yarn defect information to an RF tag T3. The automatic winder 1 includes an RF reader 18 for reading yarn defect information written by an RF writer 31. In this case, the automatic winder 1 can acquire the yarn defect information of the yarn supplying bobbin B by using the tray T, RF writer 31 and the RF reader 18 each having the RF tag T3.

In the spinning system 100, the ring spinning machine 2 acquires 2 nd yarn defect information relating to the twist unevenness when the twist unevenness occurs in the yarn Y of the yarn supplying bobbin B, and acquires 3 rd yarn defect information relating to the yarn breakage of the yarn Y of the yarn supplying bobbin B at the 1 st frequency or higher when the yarn breakage occurs at the 1 st frequency or higher. When the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin B is acquired, the automatic winder 1 does not wind the yarn Y from the yarn supplying bobbin B. This prevents the yarn Y of the yarn supplying bobbin B related to the 2 nd yarn defect information or the 3 rd yarn defect information from being wound in the automatic winder 1.

In the spinning system 100, when the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin B is acquired, the automatic winder 1 does not wind the yarn Y from the yarn supplying bobbin B, and discharges the yarn supplying bobbin B as the defective bobbin B1. Thus, the automatic winder 1 can reliably prevent the yarn Y of the yarn supplying bobbin B related to the 2 nd yarn defect information or the 3 rd yarn defect information from being wound.

In addition, the yarn defect information obtained by the defect information obtaining section 28 may make it difficult to determine whether or not the yarn quality of the yarn supplying bobbin B is really poor. This is because the yarn defect information obtained by the defect information obtaining unit 28 is information for estimating a defective spindle, which is obtained from, for example, the yarn breakage frequency of the worsted tubular yarn, the spindle rotation speed, and the like. Therefore, it is desirable to accurately determine the yarn quality of the yarn supplying bobbin B.

In this regard, in the spinning system 100, when the yarn breakage of the yarn Y of the yarn supplying bobbin B occurs at the frequency less than the 1 st frequency and not less than the 2 nd frequency, the ring spinning machine 2 acquires the 4 th yarn defect information (yarn defect information) regarding the yarn breakage at the frequency less than the 1 st frequency and not less than the 2 nd frequency. When the 4 th yarn defect information of the yarn supplying bobbin B is acquired, the automatic winder 1 determines (checks) whether or not the quality of the yarn supplying bobbin B satisfies the quality reference value based on the yarn information acquired when the yarn Y is wound on the yarn supplying bobbin B. This makes it possible to accurately determine the yarn quality of the yarn supplying bobbin B relating to the 4 th yarn defect information (to ensure the determined yarn quality). When it is determined that the quality reference value is not satisfied, the automatic winder 1 stops winding of the yarn Y from the yarn supplying bobbin B. Thus, the yarn Y can be prevented from being wound on the yarn supplying bobbin B relating to the 4 th yarn defect information when the yarn quality is really poor. Further, the winding of the yarn Y in the automatic winder 1 is not always prevented, and when the automatic winder 1 determines that the quality reference value is satisfied, the yarn Y can be wound in the automatic winder 1 as usual to form the package P, and this decrease in production efficiency can be further suppressed.

In the spinning system 100, when the 4 th yarn defect information of the yarn supplying bobbin B is acquired, the automatic winder 1 determines whether or not the quality of the yarn supplying bobbin B satisfies a quality reference value based on the yarn information acquired when the yarn Y is wound from the yarn supplying bobbin B, and discharges the yarn supplying bobbin B as a defective bobbin when it is determined that the quality reference value is not satisfied. In this case, the automatic winder 1 can reliably prevent the yarn Y of the yarn supplying bobbin B that does not satisfy the quality reference value from being wound.

In the present embodiment, the case where the automatic winder 1 acquires the 4 th yarn defect information of the yarn supplying bobbin B has been described, but the present invention is not limited to this. In the spinning system 100, when the 2 nd yarn defect information or the 3 rd yarn defect information of the yarn supplying bobbin B is acquired, it may be determined whether or not the quality of the yarn supplying bobbin B satisfies the quality reference value based on the yarn information acquired when the yarn Y is wound around the yarn supplying bobbin B, and when it is determined that the quality reference value is not satisfied, the yarn supplying bobbin B may be discharged as a defective bobbin. The defective information measured by the ring spinning frame 2 cannot be confirmed as accurately as the clearer 15 provided in the automatic winder 1. Therefore, by checking the defect information measured by the ring spinning machine 2 by the clearer 15, it is possible to verify the quality of the defect information measured by the ring spinning machine 2. After the primary verification, the defect information measured by the ring spinning frame 2 can be evaluated based on the verification result, and therefore the reliability of the defect information measured by the ring spinning frame 2 is improved.

In the spinning system 100, the bobbin transfer device 3 includes a defective bobbin discharger 4 capable of discharging a defective bobbin B1 discharged from the automatic winder 1 to the outside of the path L3. In this case, the defective bobbin B1 can be eliminated in the bobbin transfer device 3.

In the spinning system 100, the automatic winder 1 may acquire the yarn defect information by communication or may acquire the yarn defect information by an operation input by an operator through the operation unit 11 b. In this case, the automatic winder 1 can acquire the yarn defect information of the yarn supplying bobbin B by communication and operation input.

The embodiments have been described above, but one embodiment of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

The above embodiment may be configured such that: the yarn supplying bobbin B is transferred from the plurality of ring frames 2 to one automatic winder 1 by providing the ring frames 2 in a number larger than the number of the automatic winders 1. In the above embodiment, the defective bobbin B1 is discharged out of the path L3 by the defective bobbin discharger 4, but the yarn Y may be removed from the defective bobbin B1 by the excess yarn remover 35 to become an empty bobbin E.

In the above embodiment, the automatic winder 1 may acquire the yarn defect information from the ring spinning frame 2 by communication. In the above embodiment, the bobbin transfer device 3 is provided with the remaining yarn amount confirmation sensor 32, the yarn end preparation device 33, the yarn presence/absence confirmation sensor 34, the remaining yarn removing device 35, and the bypass paths L33 and L34, but these may be omitted as appropriate. In the above embodiment, the RF readers 18 and 41 are not limited to reading information from the RF tag T3 in a non-contact manner, and may read information in a contact manner.

One embodiment of the present invention can perform the following steps 1 to 3.

Step 1: the yarn amount (the total amount of yarn not yet wound) of the yarn supplying bobbin B existing in the automatic winder (yarn winding machine) 1 and the bobbin transfer device 3 is grasped.

And a step 2: the yarn amount of the yarn supplying bobbin B wound by the final doffing (final doffing in the ring spinning frame 2) is calculated. At this time, the yarn amount is grasped in units of the yarn supplying bobbin B (for the yarn supplying bobbin B having a defective portion, both the normal yarn length and the yarn length of the defective portion are managed).

Step 3: the required amount of yarn for full winding is supplied to a predetermined winding unit 10. When feeding, the yarn amount obtained by subtracting the defective portion is calculated for the yarn supplying bobbin B containing the defective yarn (the defective yarn is not wound but discharged).

That is, in one aspect of the present invention, the control unit may execute: a first process of grasping the yarn amount of a yarn supplying bobbin existing in a yarn winding machine and a bobbin transfer device; a 2 nd process of calculating a yarn amount of the yarn supplying bobbin wound by the final doffing in the spinning frame in units of the yarn supplying bobbin; and a 3 rd process of supplying a yarn amount necessary for full winding to a predetermined winding unit of the yarn winding machine, wherein in the 2 nd process, both a normal yarn length and a yarn length of the defective yarn are managed for the yarn supplying bobbin having the defective yarn, and in the 3 rd process, the yarn amount obtained by subtracting the defective yarn is calculated for the yarn supplying bobbin having the defective yarn, and the defective yarn is discharged without being wound. The control unit may be configured by at least a part of the winding machine base control device 11, the spinning machine base control device 21, and the bobbin transfer device control unit 39. This makes it possible to supply a predetermined winding unit 10 with a required amount of yarn for a full winding, and to prevent the batch from ending up with an incomplete winding. For example, in the case where the yarn supplying bobbins B are equally distributed, the yarn supplying bobbins B are used up at the time point when five 1/2 packages are completed as the packages P, but according to one aspect of the present invention described above, it is possible to end up with two full-package and one 1/2 package as the packages P.

In one embodiment of the present invention, the amount (length) of yarn in units of yarn supplying bobbins B may be managed as information. This management may be managed by the automatic winder (yarn winding machine) 1 or may be managed by the quality control unit 29. In this management, the following processing is specifically performed. That is, after the package P is wound by the predetermined winding unit 10, the yarn clearer management device 51 calculates the defective yarn ratio for each bobbin based on the measurement result of the yarn clearer 15. For example, the defect removal yarn length is 2.5m with respect to the bobbin yarn length of 2489m, and in this case, the defective yarn length ratio is calculated to be 0.1%. For example, the defect-removed yarn length is 10m with respect to the bobbin yarn length of 2489m, and in this case, the defective yarn length ratio is calculated to be 0.4%. The defective yarn length ratio is accumulated as data for each doffing in the quality control unit 29 of each ring spinning machine 2, the automatic winder 1, or the spinning unit 20. It is possible to have an alarm indicator indicating the length rather than the number of defects in the past. When grasping the situation where the defective yarn portion is discharged without being wound (grasping the normal yarn length and grasping the defective yarn length), the setting of the threshold value and the like becomes easy if the management is performed using the above-described index. In addition, the threshold value can be freely set by an operator, and quality management is also facilitated.

The structures in the above-described embodiments and modifications are not limited to the materials and shapes described above, and various materials and shapes can be applied. The configurations in the above-described embodiment or modification can be arbitrarily applied to the configurations in the other embodiments or modifications. A part of each configuration in the above embodiment or modification can be omitted as appropriate within a range not departing from the gist of one embodiment of the present invention.