Yarn winding machine and spinning system

Abstract

A yarn winding machine and a spinning system are provided. The yarn winding machine winds yarn of a feed yarn bobbin transferred from a spinning machine via a bobbin transfer device to form a package. The yarn winding machine has a control section. When a local defect occurs in the yarn of the feed yarn bobbin in the spinning machine, the control section acquires first yarn defect information generated by the spinning machine in response to the occurrence of the local defect. The yarn winding machine, when the first yarn defect information of the feed yarn bobbin is acquired, stops winding of the yarn from the feed yarn bobbin when it is determined, based on yarn information acquired from the feed yarn bobbin involved in the acquired first yarn defect information and the first yarn defect information generated by the spinning machine, that the yarn has been unwound from the feed yarn bobbin to a position corresponding to the local defect of the first yarn defect information.

Description

Technical Field

[0001] This invention relates to a yarn winding machine and a spinning system. Background Technology

[0002] A spinning system is known, comprising a worsting machine that forms a yarn feed bobbin with yarn wound on it, and a yarn winding machine that winds the yarn from the yarn feed bobbin, which is transferred from the worsting machine via a bobbin transfer device, to form a package (e.g., refer to International Publication No. 2018 / 212293). In this spinning system, quality information related to the quality of the yarn feed bobbin is acquired, and based on the quality information, it is determined whether the quality of the yarn feed bobbin meets a quality reference value. If it is determined that the quality reference value is not met, the yarn from the yarn feed bobbin is prevented from being wound by the yarn winding machine.

[0003] Typically, at the bottom of the yarn feed tube wound by the yarn winder (the part where the yarn begins to wind in a worsted spinning machine), there is a situation where yarn of unstable quality is wrapped around it. This localized defect in the yarn feed tube frequently leads to problems with yarn defect removal and splicing operations in the yarn winder. Regarding this, in the aforementioned conventional spinning systems, this problem can be avoided by preventing the yarn winder from winding the yarn feed tube that is judged to be defective; however, the portion of the yarn feed tube with normal quality (the portion other than the locally defective part) is wasted. Summary of the Invention

[0004] Therefore, the present invention aims to provide a yarn winding machine and spinning system that can suppress the reduction of production efficiency.

[0005] One aspect of the present invention is a yarn winding machine that winds yarn from a feed bobbin transferred from a spinning machine via a bobbin transfer device to form a package. The yarn winding machine includes a control unit that, when a local defect occurs in the yarn of the feed bobbin in the spinning machine, acquires first yarn defect information generated by the spinning machine in response to the local defect. Upon acquiring the first yarn defect information from the feed bobbin, and based on yarn information acquired during yarn winding from the feed bobbin involved in the acquired first yarn defect information and the first yarn defect information generated by the spinning machine, determines that the yarn has been unwound from the feed bobbin to the position corresponding to the local defect in the first yarn defect information, the winding of the yarn from the feed bobbin is stopped.

[0006] In this yarn winding machine, the yarn from the feed tube involved in the first yarn defect information up to the position corresponding to the local defect (i.e., the portion of yarn with normal quality) can be wound without waste. Therefore, it is possible to suppress the reduction in production efficiency.

[0007] In one embodiment of the yarn winding machine of the present invention, the control unit may discharge the yarn feeding tube as a defective yarn tube when it determines, based on yarn information, that the yarn has unwound from the feed tube to a position corresponding to a partial defect in the first yarn defect information of the feed tube. In this case, the yarn winding machine can reliably prevent the partial defective yarn in the feed tube from being wound. Furthermore, by preventing the removal of predictable defective portions and the continuous occurrence of splicing, the production efficiency of the yarn winding machine is also improved.

[0008] In one embodiment of the yarn winding machine of the present invention, the first yarn defect information may be related to a broken yarn at the bottom of the feed tube. In this case, the yarn up to the bottom of the feed tube can be wound in the yarn winding machine without waste. Typically, the yarn quality at the bottom of the feed tube is often poor. Therefore, by considering the information related to a broken yarn at the bottom, it is possible to prevent the reduction in efficiency caused by the winding of locally defective yarn due to production failures in the spinning machine.

[0009] In one embodiment of the yarn winding machine of the present invention, a yarn length measuring mechanism may also be included. This yarn length measuring mechanism acquires information related to the total length of the yarn wound by the yarn winding machine or information related to the length of the yarn unwound from the yarn feed tube as yarn information. The control unit determines, based on the information related to the total length of the yarn wound by the yarn winding machine calculated by the yarn length measuring mechanism or the information related to the length of the yarn unwound from the yarn feed tube measured by the yarn length measuring mechanism, that the yarn has been unwound from the yarn feed tube to the position corresponding to the partial defect of the first yarn defect information. In this case, since the control unit determines that the yarn has been unwound from the yarn feed tube to the position corresponding to the partial defect of the first yarn defect information through the yarn length measuring mechanism, it can more accurately determine that the yarn has been unwound from the yarn feed tube to the position corresponding to the partial defect of the first yarn defect information. Only the defective portion of the yarn can be discarded.

[0010] In one embodiment of the yarn winding machine of the present invention, a yarn quality monitoring device may also be included to monitor the state of the yarn and detect yarn defects. The control unit manages the detection frequency of yarn defects measured by the yarn quality monitoring device as yarn information, and determines that the yarn has been unwound from the feed tube to the position corresponding to the local defect of the first yarn defect information when the detection frequency of yarn defects exceeds a predetermined frequency. In this case, since the control unit can determine that the yarn has been unwound from the feed tube to the position corresponding to the local defect of the first yarn defect information without adding a special device such as a yarn length measuring mechanism, one embodiment of the present invention can be implemented without increasing costs.

[0011] Alternatively, one embodiment of the spinning system of the present invention is a spinning system comprising the aforementioned yarn winding machine and spinning machine. The yarn feed tube is transferred by a yarn feeder in a state where it is placed on a tray having a storage section. The spinning machine or the yarn feeder has an information writing section that writes first yarn defect information to the storage section, and the yarn winding machine has an information reading section that reads the first yarn defect information written by the information writing section. In this case, the yarn winding machine can obtain the first yarn defect information of the yarn feed tube using the tray with the storage section, the information writing section, and the information reading section.

[0012] In one aspect of the spinning system of the present invention, when the yarn in the yarn feed tube exhibits uneven twist, the spinning machine acquires second yarn defect information related to the uneven twist; and when yarn breakage occurs at a first frequency or higher in the yarn feed tube, it acquires third yarn defect information related to the breakage at a first frequency or higher. The yarn winding machine, upon acquiring either the second or third yarn defect information from the yarn feed tube, does not wind the yarn from that yarn feed tube. In this case, the yarn in the yarn feed tube affected by the second or third yarn defect information can be prevented from being wound in the yarn winding machine.

[0013] In one embodiment of the spinning system of the present invention, if the yarn winding machine receives a second or third yarn defect information from the yarn feed tube, it may not wind the yarn from that yarn feed tube, but instead discharges the yarn feed tube as a defective yarn tube. In this case, the yarn in the yarn feed tube involved in the second or third yarn defect information can be reliably prevented from being wound in the yarn winding machine.

[0014] In one aspect of the spinning system of the present invention, the worsting machine may acquire second yarn defect information related to the twist unevenness when the yarn in the yarn feed tube has uneven twist, and acquire third yarn defect information related to the yarn breakage at a frequency of a first frequency or higher when yarn breakage occurs in the yarn feed tube. When the yarn winding machine acquires either the second or third yarn defect information from the yarn feed tube, it determines whether the quality of the yarn feed tube meets a predetermined quality benchmark value based on the yarn information acquired during yarn winding from the yarn feed tube, and stops winding the yarn from the yarn feed tube if the quality benchmark value is not met. The defect information measured by the worsting machine cannot be confirmed as precisely as with a yarn quality monitoring device such as a yarn clearer installed on the yarn winding machine. Therefore, by using a yarn quality monitoring device such as a yarn clearer installed on the yarn winding machine to confirm the defect information measured by the worsting machine, it is possible to verify the degree of quality of the defect information measured by the worsting machine. After one validation, the reliability of the defect information measured by the spinning machine is improved because the validation results can be used to evaluate the defect information measured by the spinning machine.

[0015] In one aspect of the spinning system of the present invention, when a yarn breakage occurs at a frequency lower than a first frequency but higher than a second frequency in the yarn feed tube, the spinning machine acquires fourth yarn defect information related to the breakage at a frequency lower than the first frequency but higher than the second frequency. Upon acquiring this fourth yarn defect information, the yarn winding machine determines whether the quality of the yarn feed tube meets a predetermined quality benchmark value based on yarn information acquired during yarn winding from the yarn feed tube. If the quality benchmark value is not met, the winding of the yarn from the yarn feed tube is stopped. In this case, the yarn winding in the yarn winding machine is not always prevented for the yarn feed tube involved in the fourth yarn defect information; when the quality benchmark value is met in the yarn winding machine, the yarn can be wound normally.

[0016] In one embodiment of the spinning system of the present invention, the yarn winding machine may discharge the feed bobbin as a defective bobbin if it determines that the quality benchmark value is not met. In this case, the yarn of the feed bobbin that does not meet the quality benchmark value can be reliably prevented from being wound in the yarn winding machine.

[0017] In one embodiment of the spinning system of the present invention, the yarn bobbin conveying device may also have a discharge device capable of discharging defective yarn bobbins discharged from the yarn winding machine outside the path. In this case, defective yarn bobbins can be removed from the yarn bobbin conveying device.

[0018] In one embodiment of the spinning system of the present invention, the yarn winding machine may acquire the first yarn defect information via communication or operational input by the operator through an operation unit. In this case, the yarn winding machine can acquire the first yarn defect information of the yarn feed tube using communication and operational input.

[0019] In one aspect of the spinning system of the present invention, the control unit may perform the following processes: a first process, which involves determining the amount of yarn in the feed tubes present in the yarn winding machine and the tube transfer device; a second process, which involves calculating the amount of yarn in the feed tubes that have been wound through the final doffing in the spinning machine, on a per-feeding-tube basis; and a third process, which involves supplying the amount of yarn required to fully wind a predetermined winding unit of the yarn winding machine. In the second process, for feed tubes containing defective yarn, both the normal yarn length and the defective yarn length are managed. In the third process, for feed tubes containing defective yarn, the amount of yarn after subtracting the defective yarn is calculated, and the defective yarn is discharged instead of being wound. This allows the amount of yarn required to fully wind a predetermined winding unit to be supplied, preventing the batch from ending with an incomplete spool.

[0020] According to the present invention, a spinning system capable of suppressing the reduction of production efficiency can be provided. Attached Figure Description

[0021] Figure 1 This is a side view showing one embodiment of a spinning system.

[0022] Figure 2A This is a three-dimensional representation of the tray. Figure 2B It is a three-dimensional diagram representing an empty yarn tube. Figure 2C This is a three-dimensional diagram representing the yarn feeding tube.

[0023] Figure 3 It means Figure 1 A side view of the worsted spinning unit of the spinning system.

[0024] Figure 4 It means Figure 1 A block diagram of the main components of the spinning system.

[0025] Figure 5 It means Figure 1 A top view of the spinning system.

[0026] Figure 6 It means Figure 1 The front view of the automatic winding machine of the spinning system. Detailed Implementation

[0027] like Figure 1As shown, the spinning system 100 includes an automatic winding machine (yarn winding machine) 1 and a ring spinning machine (spinning machine) 2. The ring spinning machine 2 generates yarn Y from roving and winds the yarn Y onto an empty yarn tube E (a winding tube without yarn Y) to form a feed yarn tube B. The automatic winding machine 1 winds the yarn Y from the feed yarn tube B, which is transferred (conveyed) from the ring spinning machine 2 via a yarn tube transfer device 3, to form a package P. The yarn tube transfer device 3 transfers the feed yarn tube B from the ring spinning machine 2 to the automatic winding machine 1 and transfers the empty yarn tube E from the automatic winding machine 1 to the ring spinning machine 2.

[0028] The feed yarn tube B and the empty yarn tube E are transferred while placed (carried) on the tray T. For example... Figure 2A As shown, the tray T has a circular base T1, a pin T2 protruding upward from the base T1, and an RF (Radio Frequency) tag (storage unit) T3 disposed on the base T1. Furthermore, the RF tag T3 can be built into the base T1 or mounted on the outer surface of the base T1. Additionally, the RF tag T3 is not limited to being rectangular as shown; for example, it can also be donut-shaped (ring-shaped). Identification information for identifying the tray T with the RF tag T3 is stored within the RF tag T3.

[0029] like Figure 2B and Figure 2C As shown, the yarn feed tube B and the yarn tube E, which serves as its winding tube, are placed on the tray T with the top Eb of the yarn tube E facing upwards by inserting a pin T2 into the bottom Ea of the yarn tube E. The RF tag T3 stores yarn defect information related to defects in the yarn Y in the yarn feed tube B placed on the tray T. In the spinning system 100, the condition of the yarn feed tube B placed on the tray T is managed using RFID (Radio Frequency Identification) technology. Furthermore, the structure of the tray T is not limited to the above-described form. For example, the base T1 may not be a circular plate, and the method of placing the yarn feed tube B and the empty yarn tube E may not involve inserting the pin T2. ​​The location of the RF tag T3 can be any position that can be read and written by the RF writer (information writing unit) 31 and the RF reader (information reading unit) 18, 41, described later.

[0030] [Structure of Ring Spinning Machine 2]

[0031] The ring spinning machine 2 performs the spinning process preceding the automatic winding machine 1. For example... Figure 1As shown, the ring spinning machine 2 includes a spinning machine control unit 21 that controls the operation of the ring spinning machine 2, and multiple spinning units 20 that form the yarn feed tubes B. The spinning machine control unit 21 is, for example, an electronic control unit having a CPU (Central Processing Unit), ROM (Read-Only Memory), RAM (Random Access Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), a communication device, and a storage device. The spinning machine control unit 21 has a display section 21a (such as a display screen) and an operation section 21b (such as input keys). The display section 21a displays the operating status of each spinning unit 20. Various operation inputs are made by the operator or others in the operation section 21b. Furthermore, the display section 21a and the operation section 21b can also be configured as a touch panel.

[0032] like Figure 3 As shown, the worsted spinning unit 20 includes a drafting device 22 and a twisting device 23. The drafting device 22 includes a back roller pair 22a, an intermediate roller pair 22b, and a front roller pair 22c. The back roller pair 22a, the intermediate roller pair 22b, and the front roller pair 22c are each composed of a lower roller and an upper roller. A belt is mounted on each roller constituting the intermediate roller pair 22b. In the drafting device 22, the roving Y1 unwound from the roving bobbin is drafted by rotating the back roller pair 22a, the intermediate roller pair 22b, and the front roller pair 22c at a predetermined speed ratio.

[0033] The twisting device 23 includes a spindle 24, a ring rail 25, a ring 26, and a traveler 27. The spindle 24 holds the bottom Ea of the yarn tube E with the top Eb facing upwards and rotates the yarn tube E. The ring rail 25 is movable along the axis of the yarn tube E. The ring 26 is fixed to the ring rail 25. The traveler 27 is supported on the ring 26 and can move along the ring 26.

[0034] In the twisting device 23, the roving Y1, drafted in the drafting device 22, is inserted into the gap between the ring rail 26 and the traveler 27, with the end of the roving Y1 fixed to the yarn tube E. In this state, when the spindle 24 rotates the yarn tube E, the traveler 27 is pulled by the roving Y1 and moves along the ring rail 26. At this time, the ring rail 25 reciprocates within a predetermined range along the axial direction of the yarn tube E, gradually moving 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 yarn tube E, thereby twisting the roving Y1 to generate yarn Y, and winding the yarn Y onto the yarn tube E to form the feed tube B.

[0035] The ring spinning machine 2, which has multiple spinning units 20 configured as described above, is configured as a so-called simultaneous doffing type. That is, the ring spinning machine 2 pre-stores multiple empty yarn tubes E transferred from the automatic winding machine 1 by the yarn tube transfer device 3, and places all the empty yarn tubes E together in each spinning unit 20, causing the yarn Y to begin winding simultaneously. When the yarn Y is wound in each spinning unit 20 and a feed yarn tube B is formed, the ring spinning machine 2 simultaneously doffs all the feed yarn tubes B. Then, the ring spinning machine 2 removes the empty yarn tubes E stored during this period from the tray T and places them back together in each spinning unit 20, replacing them with the doffed feed yarn tubes B placed together in the tray T. The doffed feed yarn tubes B are then transferred to the automatic winding machine 1 via the yarn tube transfer device 3.

[0036] like Figure 4 As shown, each of the multiple spinning units 20 in the ring spinning machine 2 is equipped with a defect information acquisition unit 28. The defect information acquisition unit 28 acquires defect information about the yarn from the feed tube B formed by the spinning unit 20. Furthermore, one defect information acquisition unit 28 may be provided for two or more spinning units 20, or multiple units may be provided for each spinning unit 20. Known sensors or devices can be used as defect information acquisition units 28. Examples of sensors that can be used as defect information acquisition units 28 include sensors that detect the state of the yarn Y generated in the spinning unit 20 (whether there is yarn breakage, abnormal thickness, etc.), sensors that detect the state of various parts of the spinning unit 20 (poor setup, wear of equipment or parts, etc.), and sensors that detect the operating state of the spinning unit 20 (forming speed of the feed tube B, etc.).

[0037] When a localized defect occurs in yarn Y on the yarn feed tube B, the defect information acquisition unit 28 acquires first yarn defect information related to that localized defect as yarn defect information. The first yarn defect information is generated by the ring spinning machine 2 in response to the occurrence of that localized defect. The localized defect in yarn Y in the first yarn defect information refers to yarn breakage occurring at a certain frequency or higher at the bottom of the yarn feed tube B (the part in the ring spinning machine 2 where yarn Y begins to wind). In other words, the first yarn defect information is information related to yarn breakage at the bottom of the yarn feed tube B. Furthermore, the frequency of yarn breakage refers to the number of times yarn breakage occurs per unit time or per unit length involving the winding of yarn Y. The certain frequency is a preset value. The certain frequency can also be input and changed by the operator via the operation unit 21b. The first yarn defect information is not limited; it only needs to be information related to a localized defect in one yarn feed tube B.

[0038] When yarn Y in the yarn feed tube B experiences twist unevenness, the defect information acquisition unit 28 acquires second yarn defect information related to this twist unevenness as yarn defect information. This second yarn defect information is generated by the ring spinning machine 2 in response to the occurrence of this twist unevenness. Whether twist unevenness has occurred can be determined using known methods. When yarn breakage in the yarn Y in the yarn feed tube B occurs at a frequency of 1 or higher, the defect information acquisition unit 28 acquires third yarn defect information related to the breakage at the 1 or higher frequency as yarn defect information. This third yarn defect information is generated by the ring spinning machine 2 in response to the breakage at the 1 or higher frequency. When yarn breakage in the yarn Y in the yarn feed tube B occurs at a frequency lower than 1 but higher than 2, the defect information acquisition unit 28 acquires fourth yarn defect information related to the breakage at a frequency lower than 1 but higher than 2 as yarn defect information. The fourth yarn defect information is generated by the ring spinning machine 2 in response to yarn breaks occurring at a frequency lower than the first frequency but higher than the second frequency. The third and fourth yarn defect information are related to yarn breaks in a single yarn feed tube B. The first and second frequencies are preset values. The first and second frequencies can also be input and changed by the operator via the operation unit 21b. For example, it can be set such that the third yarn defect information is obtained when Y or more yarn breaks occur during a yarn length Xm at the first frequency, and the fourth yarn defect information is obtained when fewer than Y but more than Z (Y > Z) yarn breaks occur during a yarn length Xm.

[0039] A quality management and control unit 29 is provided in the ring spinning machine 2. The quality management and control unit 29 manages the yarn defect information acquired by the defect information acquisition unit 28. The quality management and control unit 29 outputs the managed yarn defect information to the RF writer 31 of the yarn tube transfer device 3.

[0040] like Figure 5 As shown, the ring spinning machine 2 includes a path L2 for transferring a tray T and a conveyor belt C2. Path L2 includes a path L21 for transferring the tray T, which holds the feed yarn tubes B formed by each spinning unit 20, to the yarn tube transfer device 3, and a path L22 for receiving the tray T, which holds the empty yarn tubes E, from the yarn tube transfer device 3. The conveyor belt C2 transfers the tray T, which holds either the feed yarn tubes B or the empty yarn tubes E, along the path L2.

[0041] [Structure of Automatic Winding Machine 1]

[0042] like Figure 4 and Figure 6 As shown, the automatic winding machine 1 includes multiple winding units 10 that form a package P from the yarn feed tube B, a doffing device 19 that doffs the package P, a winding machine control device 11 that controls each winding unit 10 and the doffing device 19, and a yarn clearer management device 51.

[0043] like Figure 5 As shown, the automatic winding machine 1 includes a path L1 for transferring a tray T and a conveyor belt C1. Path L1 includes a path L11 for transferring the tray T containing the feed yarn tube B, which is transferred from the yarn tube transfer device 3, to each winding unit 10, and a path L12 for transferring the tray T containing the empty yarn tube E, which has been wound with yarn Y in the winding unit 10, to the yarn tube transfer device 3. The conveyor belt C1 transfers the tray T containing the feed yarn tube B or the empty yarn tube E along the path L1.

[0044] like Figure 6 As shown, the winding unit 10, from the upstream side of the yarn path to the downstream side, includes a yarn feeding device 12, a tension applying device 13, a yarn receiving device 14, a yarn cleaner 15 (hereinafter referred to as the yarn cleaner), and a winding device 16. The winding device 16 is equipped with a traversing drum that applies rotational force to the package P and causes the yarn Y to move laterally left and right. Additionally, as... Figure 4 As shown, the winding unit 10 includes a unit control unit 17 and an RF reader (information reading unit) 18. The RF reader 18 can also be an RF reader / writer with writing function.

[0045] The yarn feeding device 12 supports the yarn feeding tube B, which is conveyed via path L11, and assists in the unwinding of the yarn Y on the yarn feeding tube B. The yarn feeding device 12 discharges the empty yarn tube E, after all the yarn Y has been unwound, into 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 splicing device 14 is a device that connects the ends of yarn Y that have broken due to reasons such as the detection of yarn defects or the cutting of yarn Y.

[0046] The yarn clearer 15 monitors the state of the yarn Y traveling from the yarn feeder 12 towards the winding device 16 between the yarn feeder 12 and the winding device 16, and detects yarn defects. The results detected by the yarn clearer 15 of each winding unit 10 are sent to the yarn clearer management device 51 and managed therein. The yarn clearer 15 determines whether the detected yarn defect should be removed based on set removal conditions. If it is determined that the yarn defect should be removed, the yarn Y is cut by a cutter to remove the defect. The cutter is attached to the yarn clearer 15. However, the cutter may also be installed separately from the yarn clearer 15. In addition, the yarn clearer management device 51 records and manages information related to the generated defects, the number of yarn breaks (the number of times the yarn Y is cut to remove the defect), and yarn quality information related to uneven yarn thickness or pile length, based on the results detected by the yarn clearer 15.

[0047] The winding device 16 unwinds the yarn Y from the yarn feed tube B supported by the yarn feed device 12 and winds the unwound yarn Y to form a package P. The RF reader 18 reads the yarn defect information of the transferred yarn feed tube B in a non-contact manner from the RF tag T3 on the tray T on which the yarn feed tube B is placed and transferred to the winding unit 10.

[0048] The unit control unit 17 is composed of an electronic control unit having a CPU, ROM, RAM, EEPROM, communication device, storage device, etc. The unit control unit 17 controls the operation of each part of the winding unit 10 based on instructions from the winding machine control device 11. The unit control unit 17 identifies yarn information acquired when winding yarn Y from the yarn feed tube B based on detection results detected by the yarn clearer 15. This yarn information includes at least one of the following: elapsed time since the start of winding yarn Y from the yarn feed tube B, information related to the frequency of yarn breakage, specific defect information, and yarn quality information. Information related to the length of the wound yarn Y is measured by the winding device 16 or a separately provided dedicated yarn length sensor (not shown) and sent to the unit control unit 17. The yarn length information sent to the unit control unit 17 is then sent by the unit control unit 17 to the yarn clearer 15.

[0049] When the unit control unit 17 obtains yarn defect information from the RF reader 18, it controls the operation of the winding unit 10 based on the yarn defect information and the yarn information. Specifically, when the unit control unit 17 obtains the first yarn defect information, and determines, based on the yarn information obtained when winding yarn Y from the yarn feeder B and the first yarn defect information, that yarn Y has been unwound from the yarn feeder B to the position corresponding to the local defect in the first yarn defect information, it stops the winding of yarn Y from the yarn feeder B and forcibly discharges the yarn feeder B as a defective yarn tube B1 into path L12. The unit control unit 17 sends the identification information of the tray T on which the defective yarn tube B1 is placed as information for identifying the defective yarn tube B1 to the discharge control unit 42 described later.

[0050] For example, if the local defect of yarn Y in the first yarn defect information is a defect at the bottom of the yarn feed tube B, the unit control unit 17 determines whether yarn Y has been unwound from the yarn feed tube B to its bottom or periphery based on the yarn information. As an example, the unit control unit 17 determines that yarn Y has been unwound from the yarn feed tube B to its bottom or periphery when the total length of yarn Y unwound from the supplied yarn feed tube B and wound onto the package P reaches a predetermined length (e.g., 1200m). Alternatively, the unit control unit 17 determines that yarn Y has been unwound from the yarn feed tube B to its bottom or periphery when the elapsed time since the start of winding on the yarn feed tube B reaches a predetermined time. Or, the unit control unit 17 determines that yarn Y has been unwound from the yarn feed tube B to its bottom or periphery when the frequency of yarn breakage (yarn defect detection) during winding on the yarn feed tube B exceeds a predetermined frequency. Furthermore, when the unit control unit 17 determines that the yarn Y has been unwound from the yarn feed tube B to the bottom or its periphery, it stops the winding of the yarn Y and forces the defective yarn tube B1 with excess yarn at the bottom to be discharged into the path L12.

[0051] When the unit control unit 17 receives information about a second or third defective yarn, it does not wind the yarn Y from the yarn feed tube B, but instead discharges the yarn feed tube B as a defective yarn tube B1 into path L12 as is. The unit control unit 17 sends the identification information of the tray T on which the defective yarn tube B1 is placed as information for identifying the defective yarn tube B1 to the discharge control unit 42, which will be described later.

[0052] When the unit control unit 17 receives information about a fourth defective yarn, it determines whether the quality of the yarn feed tube B meets a predetermined quality standard value based on the yarn information obtained when winding yarn Y from the yarn feed tube B. If the unit control unit 17 determines that the quality standard value is not met, it stops the winding of yarn Y from the yarn feed tube B and discharges the yarn feed tube B as a defective yarn tube B1 into path L12. The quality standard value can be changed by the operator via the operation unit 11b. The determination of whether the quality of the yarn feed tube B meets the quality standard value can be performed using a known determination method. The unit control unit 17 sends the identification information of the tray T on which the defective yarn tube B1 is placed as information for identifying the defective yarn tube B1 to the discharge control unit 42 described later.

[0053] Furthermore, if no yarn defect information is obtained, the unit control unit 17 controls the operation of each part of the winding unit 10, so that the yarn Y in the yarn feeding tube B placed in the yarn feeding device 12 is supplied to the winding device 16.

[0054] The doffing device 19 performs doffing on the package P formed by each winding unit 10. One doffing device 19 is provided relative to the multiple winding units 10. The doffing device 19 delivers the doffed package P to a designated position (e.g., a conveyor belt located behind the machine).

[0055] The winding machine control device 11 is, for example, composed of an electronic control unit having a CPU, ROM, RAM, EEPROM, communication device, storage device, etc. Figure 4 and Figure 6 As shown, the winding machine control unit 11 includes a display unit 11a and an operation unit 11b. The display unit 11a displays at least the winding conditions and operating data of the winding unit 10. Various operation inputs are made by the operator or others in the operation unit 11b. The display unit 11a and the operation unit 11b may also be configured as a touch panel. The winding machine control unit 11 is connected to the yarn clearer management device 51 and the yarn tube transfer device control unit 39.

[0056] [Structure of yarn tube transfer device 3]

[0057] like Figure 5 As shown, the yarn tube transfer device 3 transfers the feed yarn tube B from the ring spinning machine 2 to the automatic winding machine 1 as described above, and transfers the empty yarn tube E from the automatic winding machine 1 to the ring spinning machine 2. The yarn tube transfer device 3 includes a path L3 for transferring a tray T and a conveyor belt C3. Path L3 includes path L31 for transferring the tray T containing the feed yarn tube B from the ring spinning machine 2 to the automatic winding machine 1, and path L32 for transferring the tray T containing the empty yarn tube E, which has been wound with yarn Y in the automatic winding machine 1, to the ring spinning machine 2. Path L3 includes bypass paths L33 and L34 connecting path L31 and path L32. Bypass path L33 is located on the automatic winding machine 1 side compared to bypass path L34. Thus, the path for transferring the feed yarn tube B and the empty yarn tube E between the automatic winding machine 1 and the ring spinning machine 2 is formed by the path L2 provided on the ring spinning machine 2, the path L3 provided on the yarn tube transfer device 3, and the path L1 provided on the automatic winding machine 1.

[0058] The yarn tube transfer device 3 includes a yarn tube transfer device control unit 39, an RF writer (information writing unit) 31, a excess yarn quantity confirmation sensor 32, a yarn end preparation device 33, a yarn presence / absence confirmation sensor 34, an excess yarn removal device 35, and a defective yarn tube discharge device (discharge device) 4. The RF writer 31 is located near the path L31 through which the feed yarn tube B formed by the ring spinning machine 2 is transferred to the automatic winding machine 1. When the feed yarn tube B is transferred from the ring spinning machine 2 to the automatic winding machine 1, the yarn tube transfer device control unit 39 writes yarn defect information (one of the 1st to 4th yarn defect information) into the RF tag T3 on the tray T where the feed yarn tube B is placed in a non-contact manner via the RF writer 31. The yarn tube transfer device control unit 39 is connected to the winding machine control unit 11 of the automatic winding machine 1.

[0059] Furthermore, the RF writer 31 is not limited to being located in the yarn tube transfer device 3. It can also be installed at the outlet of the yarn tube B in the transfer direction of the ring spinning machine 2. Additionally, an RF writer 31 can be installed for each spinning unit 20. Furthermore, when different trays are used in the ring spinning machine 2 and the automatic winding machine 1, the yarn tube transfer device 3 may also include a transfer section in which the yarn tube B is transferred from the tray for the ring spinning machine 2 to the tray for the automatic winding machine 1. In this case, the RF writer 31 may be located in the transfer section or at a position slightly downstream of the transfer section in the transfer direction of the yarn tube B, and write information related to the yarn tube B to an RF tag installed on the tray for the automatic winding machine 1.

[0060] The remaining yarn quantity confirmation sensor 32 detects the remaining yarn quantity of the yarn tubes (feed tube B and empty tube E) being transported along path L31. When the yarn tube being transported along path L31 is a feed tube B with (residual) yarn Y, the yarn end preparation device 33 processes the yarn end of the feed tube B to ensure that the yarn end can be captured in the automatic winding machine 1. When the yarn tube being transported along path L31 is an empty tube E without residual yarn Y, the yarn end preparation device 33 does not process the yarn end. The conveyor belt C3 transports the feed tube B, which has undergone yarn end processing in the yarn end preparation device 33, along path L31 to the automatic winding machine 1. When the remaining yarn quantity confirmation sensor 32 detects that the yarn tube being transported along path L31 is an empty tube E without residual yarn Y, the conveyor belt C3 transports the empty tube E from path L31 to path L32 via bypass path L33.

[0061] A yarn presence / absence sensor 34 detects whether yarn Y remains on the yarn tube (feed tube B or empty tube E) being transported along path L32. If the yarn tube being transported along path L32 is a feed tube B with residual yarn Y, the conveyor belt C3 transports the feed tube B with residual yarn Y from path L32 via bypass path L34 to the excess yarn removal device 35. The excess yarn removal device 35 removes yarn Y from the feed tube B with residual yarn Y transported along bypass path L34, making it an empty tube E. The empty tube E, with yarn Y removed by the excess yarn removal device 35, is transported by the conveyor belt C3 from bypass path L34 to path L31.

[0062] like Figure 4 and Figure 5 As shown, the defective yarn tube discharge device 4 is a device capable of discharging defective yarn tubes B1 outside the path L3. The defective yarn tube discharge device 4 includes an RF reader 41, a discharge control unit 42, a defective yarn tube discharge path L4, and a conveyor belt C4. The defective yarn tube discharge path L4 branches off midway from the path L32 used to transfer the tray T from the automatic winding machine 1 to the ring spinning machine 2. The conveyor belt C4, under the control of the discharge control unit 42, draws the tray T containing the defective yarn tube B1 from the path L32 into the defective yarn tube discharge path L4. Alternatively, an automatic pull-out device that clamps and discharges the defective yarn tube B1 can be used instead of the defective yarn tube discharge path L4.

[0063] The RF reader 41 is located near path L32, but closer to the automatic winding machine 1 than the connection between path L32 and the defective yarn tube discharge path L4. The RF reader 41 reads the identification number stored in the RF tag T3 of the tray T being moved along path L32 in a non-contact manner. The discharge control unit 42 obtains the identification information of the tray T containing the defective yarn tube B1 from the unit control unit 17. Based on the identification number read by the RF reader 41 and the identification number obtained from the unit control unit 17, the discharge control unit 42 controls the conveyor belt C4 to discharge the defective yarn tube B1 from path L32 to the defective yarn tube discharge path L4.

[0064] In the automatic winding machine 1 configured as described above, a package P is formed by winding yarn Y from the yarn feed tube B, which is transferred from the ring spinning machine 2 via the yarn feed device 3. Here, when a local defect occurs in the yarn of the yarn feed tube B in the ring spinning machine 2, the unit control unit (control unit) 17 of the automatic winding machine 1 acquires first yarn defect information generated by the ring spinning machine 2 in response to this local defect. In the automatic winding machine 1, when the first yarn defect information from the yarn feed tube B is acquired, and when it is determined, based on the yarn information acquired when winding yarn Y from the yarn feed tube B related to the acquired first yarn defect information, and the first yarn defect information generated by the ring spinning machine 2, that the yarn has unwound from the yarn feed tube B to the position corresponding to the local defect in the first yarn defect information, the winding of the yarn Y from the yarn feed tube B is stopped. Therefore, according to the spinning system 100, the automatic winding machine 1 can wind the yarn Y (i.e., the portion of yarn Y with normal quality) from the feed tube B involved in the first yarn defect information up to the position corresponding to the local defect without waste. Therefore, it is possible to suppress the decrease in production efficiency. Here, the feed tube B involved in the first yarn defect information is not limited to the feed tube itself from which the first yarn defect information was obtained. If it is presumed that other feed tubes B from the same batch as the feed tube B from which the first yarn defect information was determined also have the same first yarn defect, then other feed tubes B from the same batch as the feed tube B from which the first yarn defect information was determined can also be included and treated as feed tubes B involved in the first yarn defect information.

[0065] When the unit control unit 17 determines, based on the yarn information of yarn Y, that yarn Y has unwound from the feed tube B to a position corresponding to a partial defect in the first yarn defect information of the feed tube B, it discharges the feed tube B as a defective yarn tube B1. In this case, the automatic winding machine 1 can reliably prevent the partially defective yarn Y in the feed tube B from being wound up. Furthermore, by preventing the removal of predictable defective portions and the continuous occurrence of splicing, the production efficiency of the automatic winding machine 1 is also improved.

[0066] In the automatic winding machine 1, the first yarn defect information is related to a broken yarn at the bottom of the feed tube B. In this case, the automatic winding machine 1 can wind the yarn Y up to the bottom of the feed tube B without waste. Typically, the yarn Y at the bottom of the feed tube B is of poor quality. Therefore, by taking into account the information related to the broken yarn at the bottom, it is possible to prevent the efficiency reduction caused by the automatic winding machine 1 winding of locally defective yarn Y due to production failures of the ring spinning machine 2.

[0067] In the automatic winding machine 1, the yarn information includes at least one of the following: information related to the total length of the yarn Y wound by the automatic winding machine 1, information related to the length of the yarn Y unwound from the feed tube B, and information related to the frequency of yarn breakage occurring in the automatic winding machine 1. In this case, it is possible to specifically determine whether the yarn Y has been unwound from the feed tube B to a position corresponding to a local defect. As described above, the information related to the total length of the yarn Y wound by the automatic winding machine 1 or the information related to the length of the yarn Y unwound from the feed tube B is obtained by the yarn length measuring mechanism. The yarn length measuring mechanism includes a traverse drum provided in the winding device 16 or a separately provided dedicated yarn length sensor (not shown), and a unit control unit 17. The yarn length measuring mechanism calculates information related to the total length of the yarn Y wound by the automatic winding machine 1 or the length of the yarn Y unwound from the feed tube B based on the number of rotations of the traverse drum provided in the winding device 16. Alternatively, a separate dedicated yarn length sensor (not shown) measures the information related to the total length of the yarn Y wound by the automatic winding machine 1 or the length of the yarn Y unwound from the feed tube B. The result calculated based on the number of rotations of the traverse drum or the result measured by the yarn length sensor is sent to the unit control unit 17 and managed as the total length of the yarn Y wound by the automatic winding machine 1 or the length of the yarn Y unwound from the feed tube B. The information related to the length of the yarn Y sent to the unit control unit 17 is then sent by the unit control unit 17 to the yarn clearer 15. Information related to the total length of yarn Y wound by the automatic winding machine 1 and the length of yarn Y unwound from the feed tube B can also be managed using the travel speed and travel time of yarn Y. Alternatively, a control unit can be installed on a dedicated yarn length sensor to manage the information related to the total length of yarn Y wound by the automatic winding machine 1 and the length of yarn Y unwound from the feed tube B, instead of the unit control unit 17.

[0068] The automatic winding machine 1 also includes a yarn clearer 15 (yarn quality monitoring device) that monitors the state of yarn Y and detects yarn defects. The unit control unit 17 manages the detection frequency of yarn defects measured by the yarn clearer 15 as yarn information, and determines that yarn Y has unwound from the feed tube to the position corresponding to the local defect of the first yarn defect information when the detection frequency of yarn defects exceeds a predetermined frequency. In this case, since the unit control unit 17 can determine that yarn Y has unwound from the feed tube to the position corresponding to the local defect of the first yarn defect information without the need for additional special devices such as a yarn length measuring mechanism, the automatic winding machine 1 can be realized without increasing costs.

[0069] The spinning system 100 includes an automatic winding machine 1 and a ring spinning machine 2. The yarn feed tube B is transferred by the yarn tube transfer device 3 in a state where it is placed on a tray T with an RF tag T3. The yarn tube transfer device 3 has an RF writer 31 that writes yarn defect information to the RF tag T3. The automatic winding machine 1 has an RF reader 18 that reads the yarn defect information written by the RF writer 31. In this case, the automatic winding machine 1 can obtain the yarn defect information of the yarn feed tube B using the tray T with the RF tag T3, the RF writer 31, and the RF reader 18.

[0070] In the spinning system 100, when the yarn Y in the yarn feed tube B experiences twist unevenness, the ring spinning machine 2 acquires second yarn defect information related to this twist unevenness; and when yarn breakage in the yarn Y in the yarn feed tube B occurs at a frequency of a first frequency or higher, it acquires third yarn defect information related to yarn breakage at a frequency of a first frequency or higher. When the automatic winding machine 1 acquires either the second or third yarn defect information from the yarn feed tube B, it does not wind the yarn Y from that yarn feed tube B. Therefore, the automatic winding machine 1 can prevent the yarn Y in the yarn feed tube B involved in the second or third yarn defect information from being wound.

[0071] In the spinning system 100, when the automatic winding machine 1 receives a second or third yarn defect information from the yarn feed tube B, it does not wind the yarn Y from that yarn feed tube B, but instead discharges the yarn feed tube B as a defective yarn tube B1. Thus, the automatic winding machine 1 can reliably prevent the yarn Y from being wound in the yarn feed tube B involved in the second or third yarn defect information.

[0072] Furthermore, the yarn defect information obtained by the defect information acquisition unit 28 is sometimes insufficient to determine whether the yarn quality of the feed tube B is truly poor. This is because the yarn defect information obtained by the defect information acquisition unit 28 is, for example, information about presumed defective spindles obtained based on the yarn breakage frequency and spindle speed of the worsted bobbin. Therefore, it is desirable to determine the yarn quality of the feed tube B with high accuracy.

[0073] Regarding this, in the spinning system 100, when yarn breakage of yarn Y in the yarn feed tube B occurs at a frequency lower than the first frequency but higher than the second frequency, the ring spinning machine 2 acquires fourth yarn defect information (yarn defect information) related to yarn breakage at a frequency lower than the first frequency but higher than the second frequency. When the automatic winding machine 1 acquires the fourth yarn defect information from the yarn feed tube B, it determines (verifies) whether the quality of the yarn feed tube B meets the quality benchmark value based on the yarn information acquired when winding yarn Y from the yarn feed tube B. Therefore, the yarn quality can be determined with high precision for the yarn feed tube B involved in the fourth yarn defect information (making the determined yarn quality reliable). Furthermore, if the automatic winding machine 1 determines that the quality benchmark value is not met, it stops winding yarn Y from the yarn feed tube B. Therefore, for the yarn feed tube B involved in the fourth yarn defect information, it is possible to prevent the winding of yarn Y when the yarn quality is truly very poor. In addition, the winding of yarn Y in the automatic winding machine 1 is not always prevented. When the quality benchmark value is determined to be met in the automatic winding machine 1, the yarn Y can be wound in the automatic winding machine 1 as usual to form package P, which can further suppress the reduction in production efficiency.

[0074] In the spinning system 100, when the automatic winding machine 1 receives information about a fourth defective yarn from the yarn feed tube B, it determines whether the quality of the yarn feed tube B meets the quality benchmark value based on the yarn information obtained when winding the yarn Y from the yarn feed tube B. If the quality benchmark value is not met, the yarn feed tube B is discharged as a defective yarn tube. In this case, the automatic winding machine 1 can reliably prevent the yarn Y from being wound by the yarn feed tube B that does not meet the quality benchmark value.

[0075] In this embodiment, the case where the automatic winding machine 1 obtains the fourth yarn defect information of the feed tube B is described, but it is not limited to this. In the spinning system 100, if the second or third yarn defect information of the feed tube B is obtained, the quality of the feed tube B is determined based on the yarn information obtained when the yarn Y is wound from the feed tube B, and if it is determined that the quality standard value is not met, the feed tube B is discharged as a defective yarn tube. The defect information measured by the ring spinning machine 2 cannot be confirmed as precisely as the yarn clearer 15 installed on the automatic winding machine 1. Therefore, by using the yarn clearer 15 to confirm the defect information measured by the ring spinning machine 2, it is possible to verify the quality level of the defect information measured by the ring spinning machine 2. After one verification, the defect information measured by the ring spinning machine 2 can be evaluated based on the verification result, thus improving the reliability of the defect information measured by the ring spinning machine 2.

[0076] In the spinning system 100, the bobbin transfer device 3 has a defective bobbin discharge device 4 capable of discharging defective bobbins B1 discharged from the automatic winding machine 1 outside the path L3. In this case, defective bobbins B1 can be discharged from the bobbin transfer device 3.

[0077] Furthermore, in the spinning system 100, the automatic winding machine 1 can acquire yarn defect information either through communication or through operation input by the operator via the operation unit 11b. In this case, the automatic winding machine 1 can acquire yarn defect information of the yarn feed tube B using both communication and operation input.

[0078] The embodiments have been described above, but one aspect of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0079] The above-described embodiment can also be configured such that there are more ring spinning machines 2 than automatic winding machines 1, and the yarn feed tubes B are transferred from multiple ring spinning machines 2 to one automatic winding machine 1. In the above embodiment, the defective yarn tube B1 is discharged outside the path L3 by the defective yarn tube discharge device 4, but the excess yarn removal device 35 can also remove the yarn Y from the defective yarn tube B1 to make it an empty yarn tube E.

[0080] In the above embodiments, the automatic winding machine 1 can also obtain yarn defect information from the ring spinning machine 2 via communication. In the above embodiments, the yarn bobbin transfer device 3 includes a yarn quantity confirmation sensor 32, a yarn end preparation device 33, a yarn presence / absence confirmation sensor 34, a yarn removal device 35, and bypass paths L33 and L34, but these can be appropriately omitted. In the above embodiments, the RF readers 18 and 41 are not limited to reading information from the RF tag T3 in a non-contact manner; they can also read information in a contact manner.

[0081] One embodiment of the present invention may implement the following steps 1 to 3.

[0082] Step 1: Determine the amount of yarn (the total amount of yarn that has not yet been wound) in the yarn feeding tube B of the automatic winding machine (yarn winding machine) 1 and the yarn tube transfer device 3.

[0083] Step 2: Calculate the amount of yarn wound through the final doffing (final doffing in ring spinning machine 2) of the feed tube B. At this time, the amount of yarn is controlled in units of feed tube B (for feed tube B with defective parts, manage both the normal yarn length and the yarn length of the defective part).

[0084] Step 3: Supply the required amount of yarn to the specified winding unit 10 for a full roll. During supply, the amount of yarn is calculated for the feed tube B containing defective yarn, after subtracting the defective portion (the defective yarn is discharged instead of being wound).

[0085] That is, in one embodiment of the present invention, the control unit may perform the following processes: a first process, which measures the amount of yarn in the feed tubes present in the yarn winding machine and the yarn tube transfer device; a second process, which calculates the amount of yarn in the feed tubes that have been wound through the final doffing in the spinning machine, on a unit basis; and a third process, which supplies the amount of yarn required to fully wind a predetermined winding unit of the yarn winding machine. In the second process, for feed tubes with defective yarn, both the normal yarn length and the length of the defective yarn are managed. In the third process, for feed tubes with defective yarn, the amount of yarn after subtracting the defective yarn is calculated, and the defective yarn is discharged instead of being wound. Furthermore, the control unit may be composed of at least a portion of the winding machine control device 11, the spinning machine control device 21, and the yarn tube transfer device control unit 39. Thus, the amount of yarn required to fully wind a predetermined winding unit 10 can be supplied, and the batch can be prevented from ending with an incomplete spool. For example, if the yarn feed tubes B are evenly distributed, the yarn feed tubes B will be used up when five 1 / 2 rolls have been completed as a package P. However, according to one aspect of the present invention described above, the package P can be completed with two full rolls and one 1 / 2 roll.

[0086] In another aspect of the invention, the amount (length) of yarn, measured in units of the yarn feed tube B, can be managed as information. This management can be performed by either the automatic winding machine (yarn winding machine) 1 or the quality control unit 29. Specifically, this management involves the following process: After the package P is wound using the prescribed winding unit 10, the yarn clearer management device 51 calculates the defective yarn rate for each yarn tube based on the measurement results from the yarn clearer 15. For example, if the yarn length of the yarn tube is 2489m and the defective yarn length is 2.5m, the defective yarn length rate is calculated to be 0.1%. Alternatively, for example, if the yarn length of the yarn tube is 2489m and the defective yarn length is 10m, the defective yarn length rate is calculated to be 0.4%. Furthermore, this defective yarn length rate is accumulated as data by the quality control unit 29, the automatic winding machine 1, or the spinning unit 20 of each ring spinning machine 2 for each doffing. It can provide an alarm indicator based on length rather than the previous number of defects. When managing situations where defective yarn is discharged without being wound up (regarding both normal and defective yarn lengths), setting thresholds becomes easier. Furthermore, this threshold can be freely set by the operator, simplifying quality management.

[0087] The structures in the above embodiments and modifications are not limited to the materials and shapes described above, but various materials and shapes can be used. The structures in the above embodiments or modifications can be arbitrarily applied to structures in other embodiments or modifications. A portion of the structures in the above embodiments or modifications can be appropriately omitted without departing from the spirit of one aspect of the invention.

Claims

1. A yarn winding machine that winds said yarn from a yarn feed tube conveyed from a spinning machine via a yarn tube transfer device to form a package, characterized in that, The yarn winding machine is equipped with a control unit. When a localized defect occurs in the yarn of the yarn feed tube in the spinning machine, the control unit acquires the first yarn defect information generated by the spinning machine in response to the occurrence of this localized defect. When the control unit obtains the first yarn defect information from the yarn feed tube, and determines, based on the yarn information obtained when the yarn is wound around the yarn in the yarn feed tube involved in the first yarn defect information and the first yarn defect information generated by the spinning machine, that the yarn has been unwound from the yarn feed tube to the position corresponding to the local defect in the first yarn defect information, the winding of the yarn from the yarn feed tube is stopped.

2. The yarn winding machine according to claim 1, characterized in that, When the control unit determines, based on the yarn information, that the yarn has been unwound from the yarn feed tube to the position corresponding to the local defect of the first yarn defect information of the yarn feed tube, the yarn feed tube is discharged as a defective yarn tube.

3. The yarn winding machine according to claim 1, characterized in that, The first yarn defect information is related to a broken yarn in the bottom of the yarn feed tube.

4. The yarn winding machine according to claim 2, characterized in that, The first yarn defect information is related to a broken yarn in the bottom of the yarn feed tube.

5. The yarn winding machine according to any one of claims 1 to 4, characterized in that, It also includes a yarn length measuring mechanism that acquires information related to the total length of the yarn wound by the yarn winding machine or information related to the length of the yarn unwound from the yarn feed tube as yarn information. The control unit determines, based on information calculated by the yarn length measuring mechanism related to the total length of the yarn wound by the yarn winding machine or information measured by the yarn length measuring mechanism related to the length of the yarn unwound from the yarn feeding tube, that the yarn has been unwound from the yarn feeding tube to the position corresponding to the local defect of the first yarn defect information.

6. The yarn winding machine according to any one of claims 1 to 4, characterized in that, It also has a yarn quality monitoring device for monitoring the condition of the yarn and detecting yarn defects. The control unit manages the yarn information by using the detection frequency of yarn defects measured by the yarn quality monitoring device as the yarn information, and determines that the yarn has been unwound from the yarn feed tube to the position corresponding to the local defect of the first yarn defect information when the detection frequency of the yarn defect exceeds a predetermined frequency.

7. The yarn winding machine according to claim 5, characterized in that, It also has a yarn quality monitoring device for monitoring the condition of the yarn and detecting yarn defects. The control unit manages the yarn information by using the detection frequency of yarn defects measured by the yarn quality monitoring device as the yarn information, and determines that the yarn has been unwound from the yarn feed tube to the position corresponding to the local defect of the first yarn defect information when the detection frequency of the yarn defect exceeds a predetermined frequency.

8. A spinning system, characterized in that, The yarn winding machine and the spinning machine according to any one of claims 1 to 7 The yarn feeding tube is moved by the yarn tube transfer device in a state where it is placed on a tray with a storage section. The spinning machine or yarn tube transfer device has an information writing unit that writes the first yarn defect information to the storage unit. The yarn winding machine includes an information reading unit that reads the first yarn defect information written by the information writing unit.

9. The spinning system according to claim 8, characterized in that, When the yarn in the yarn feed tube exhibits uneven twist, the spinning machine acquires second yarn defect information related to this uneven twist. When yarn breakage occurs at a frequency of 1 or higher in the yarn feed tube, the spinning machine acquires third yarn defect information related to yarn breakage at a frequency of 1 or higher. If the yarn winding machine receives information about the second or third defective yarn from the yarn feeding tube, it will not wind the yarn from that yarn feeding tube.

10. The spinning system according to claim 9, characterized in that, If the yarn winding machine receives information about the second or third defective yarn from the yarn feeding tube, it will not wind the yarn from the yarn feeding tube, but will discharge the yarn feeding tube as a defective yarn tube.

11. The spinning system according to claim 8, characterized in that, When the yarn in the yarn feed tube exhibits uneven twist, the spinning machine acquires second yarn defect information related to this uneven twist. When yarn breakage occurs at a frequency of 1 or higher in the yarn feed tube, the spinning machine acquires third yarn defect information related to yarn breakage at a frequency of 1 or higher. When the yarn winding machine receives the second or third yarn defect information from the yarn feeding tube, it determines whether the quality of the yarn feeding tube meets a predetermined quality benchmark value based on the yarn information obtained when winding the yarn from the yarn feeding tube. If the yarn winding machine determines that the quality benchmark value is not met, it stops winding the yarn from the yarn feed tube.

12. The spinning system according to claim 11, characterized in that, When yarn breakage occurs at a frequency lower than a first frequency but higher than a second frequency in the yarn feed tube, the spinning machine acquires fourth yarn defect information related to yarn breakage at a frequency lower than the first frequency but higher than the second frequency. When the yarn winding machine receives the fourth yarn defect information from the yarn feeding tube, it determines whether the quality of the yarn feeding tube meets a predetermined quality benchmark value based on the yarn information obtained when winding the yarn from the yarn feeding tube. If the yarn winding machine determines that the quality benchmark value is not met, it stops winding the yarn from the yarn feed tube.

13. The spinning system according to claim 12, characterized in that, If the yarn winding machine determines that the quality benchmark value is not met, it will discharge the yarn feeding tube as a defective yarn tube.

14. The spinning system according to claim 10, characterized in that, The yarn tube transfer device has a discharge device capable of discharging the defective yarn tubes discharged from the yarn winding machine outside the path.

15. The spinning system according to claim 13, characterized in that, The yarn tube transfer device has a discharge device capable of discharging the defective yarn tubes discharged from the yarn winding machine outside the path.

16. The spinning system according to any one of claims 8 to 15, characterized in that, The yarn winding machine obtains the first yarn defect information through communication or by operator input via the operation unit.

17. The spinning system according to any one of claims 8 to 15, characterized in that, The control unit performs the following processing: The first process involves determining the amount of yarn in the yarn feeding tube present in the yarn winding machine and the yarn tube transfer device. The second process involves calculating the amount of yarn wound through the yarn feed tube after the final doffing in the spinning machine, using the yarn feed tube as the unit. and The third process involves supplying the required amount of yarn to the specified winding unit of the yarn winding machine to complete a full wind. In the second process, for the feed tube containing defective yarn, both the normal yarn length and the defective yarn length are managed. In the third process, for the yarn feed tube containing defective yarn, the amount of yarn after deducting the defective yarn is calculated, and the defective yarn is discharged without being wound up.

18. The spinning system according to claim 16, characterized in that, The control unit performs the following processing: The first process involves determining the amount of yarn in the yarn feeding tube present in the yarn winding machine and the yarn tube transfer device. The second process involves calculating the amount of yarn wound through the yarn feed tube after the final doffing in the spinning machine, using the yarn feed tube as the unit. and The third process involves supplying the required amount of yarn to the specified winding unit of the yarn winding machine to complete a full wind. In the second process, for the feed tube containing defective yarn, both the normal yarn length and the defective yarn length are managed. In the third process, for the yarn feed tube containing defective yarn, the amount of yarn after deducting the defective yarn is calculated, and the defective yarn is discharged without being wound up.

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