Yarn winding machine

Abstract

A yarn winding machine is provided. The yarn spinning machine is provided with a spinning device (22), a yarn storage device (23), a winding device (25), a capturing device (24), and a unit control section. The spinning device is for supplying a yarn (5). The yarn storage device draws out the yarn from the spinning device. The winding device winds the yarn supplied from the spinning device to form a package (7). The capturing device is fixedly arranged at a position between the yarn storage device and the winding device in a yarn travel direction, and faces a position of the yarn in a yarn path from the yarn storage device to the winding device, and attracts and captures the yarn on the package side in the case where the yarn is broken. The unit control section performs control to reduce the tension of the yarn between the yarn storage device and the package during a capturing standby period before the yarn on the package side is captured by the capturing device after the yarn is broken, while the yarn is connected to the package at the yarn storage device.

Description

Technical Field

[0001] This invention relates primarily to a yarn winding machine equipped with a capturing device for attracting and capturing yarn. Background Technology

[0002] Patent document 1 is Japanese Patent Application Publication No. 2014-88638. Patent document 2 is Japanese Patent Application Publication No. 2011-37572.

[0003] Patent Documents 1 and 2 disclose a spinning machine as a type of yarn winding machine. The spinning machine uses a winding device to wind yarn generated by a spinning device to form a package. Furthermore, the spinning machine includes a yarn holding device, a suction tube, a suction nozzle, and a splicer. The yarn holding device holds the yarn between the spinning device and the winding device. When the yarn is cut, the suction tube moves to the vicinity of the spinning device, attracts and captures the yarn on the spinning device side, and guides it to the splicer. When the yarn is cut, the suction nozzle moves to the vicinity of the package, attracts and captures the yarn on the package side, and guides it to the splicer. The splicer joins the yarn on the spinning device side with the yarn on the package side.

[0004] In the spinning machines of Patent Documents 1 and 2, a suction nozzle is used to draw in the yarn wound on the surface of the package. Therefore, for example, when the yarn adheres to the surface of the package, the capture of the yarn on the package side may fail. This problem is not limited to spinning machines; the same problem exists in other yarn winding machines such as automatic winding machines. Summary of the Invention

[0005] The present invention was made in view of the above circumstances, and its main objective is to provide a yarn winding machine equipped with a capturing device that can capture the yarn on the winding side with a high probability.

[0006] The problem to be solved by the present invention is as described above. Next, the solution used to solve the problem and its effects will be explained.

[0007] According to an aspect of the present invention, a yarn winding machine with the following structure is provided. Specifically, the yarn winding machine includes a yarn feeding section, a yarn extraction device, a winding device, a yarn capturing device, and a control unit. The yarn feeding section supplies yarn. The yarn extraction device extracts yarn from the yarn feeding section. The winding device winds the yarn supplied by the yarn feeding section to form a package. The yarn capturing device is fixedly disposed in the yarn travel direction between the yarn extraction device and the winding device, and faces the position of the yarn located in the yarn path from the yarn extraction device to the winding device, attracting and capturing the yarn on the package side when the yarn breaks. The control unit, after the yarn breaks and while the yarn is connected between the yarn extraction device and the package, controls the reduction of the yarn tension between the yarn extraction device and the package during a capture standby period before the yarn on the package side is captured by the yarn capturing device.

[0008] Therefore, since the capturing device captures the yarn between the take-up device and the package, it is easier to capture yarn on the package side compared to capturing yarn attached to the package. Furthermore, because the tension of the yarn between the take-up device and the package is reduced, the suction flow of the capturing device is more easily applied to the yarn. As a result, yarn on the package side can be captured with a high probability.

[0009] The yarn winding machine preferably has the following structure: the lead-out device includes a yarn holding roller and a yarn hanging component. The yarn holding roller is positioned downstream of the yarn feeding section and upstream of the yarn traveling direction compared to the winding device, and temporarily holds the yarn by winding it around its outer peripheral surface. The yarn hanging component winds the yarn around the outer peripheral surface of the yarn holding roller while in contact with the yarn, rotating integrally with the yarn holding roller.

[0010] Therefore, since the yarn is stored on the yarn storage roller, the time from when the yarn breaks until the yarn end on the package side passes through the capturing device can be ensured. Thus, it is easy to control and reduce yarn tension.

[0011] In the yarn winding machine, preferably, the control unit reduces the yarn tension between the take-up device and the package by reversing the winding direction of the package relative to the yarn during the capture standby period.

[0012] Therefore, yarn tension can be reduced through simple processing. Furthermore, the degree of tension reduction and / or yarn slack can be adjusted simply by varying the amount of reversal in the package.

[0013] In the yarn winding machine, preferably, the control unit reverses the package during the capture standby period so that yarn of 20 mm or more is unwound from the package.

[0014] Therefore, because the yarn can be greatly relaxed, it is easy for the suction flow of the capturing device to act on the yarn.

[0015] In the yarn winding machine, preferably, the control unit adjusts the amount of reversal of the package according to the type of yarn.

[0016] Therefore, even for types of yarn that are difficult to attract by the capture device, by increasing the amount of reversal, the capture device can capture the yarn on the package side with a high probability.

[0017] The yarn winding machine is preferably configured with the following structure: The yarn winding machine is equipped with a yarn monitoring device for monitoring the state of the yarn. Short yarn defects are referred to as short yarn defects, and yarn defects longer than short yarn defects are referred to as long yarn defects. Compared to the case where the yarn monitoring device detects a short yarn defect, the control unit increases the amount of reversal of the package when the yarn monitoring device detects a long yarn defect.

[0018] Therefore, even with long yarn defects, yarn defects can be removed from the yarn by increasing the amount of reversal.

[0019] The yarn winding machine is preferably configured such that it further includes a yarn release member that acts on the yarn to release it from the yarn holding member. During the capture standby period, the control unit reduces the yarn tension between the take-up device and the package by slowing down the winding speed of the package compared to the feeding speed of the yarn holding roller while the yarn is released from the yarn holding member using the yarn release member.

[0020] Therefore, the tension of the yarn can be reduced by using a lead-out device.

[0021] The yarn winding machine preferably has the following structure: It further includes a neutralization mechanism that disables the effect of the yarn-holding member on the yarn. This neutralization mechanism is either a stop or a motor. The stop stops the rotation of the yarn-holding member by contacting it, and the motor stops the rotation of the yarn-holding member independently of the rotation of the yarn-retaining roller, and stops the yarn-holding member at a position where it is retracted from the yarn. During the capture standby period, the control unit reduces the tension of the yarn between the take-up device and the take-up by slowing down the winding speed of the package compared to the yarn-retaining roller's feed speed after the effect of the yarn-holding member on the yarn is disabled by the neutralization mechanism.

[0022] Therefore, the tension of the yarn can be reduced by using a lead-out device.

[0023] In the yarn winding machine, preferably, the control unit increases the yarn feeding speed of the yarn holding roller after slowing down the winding speed of the package compared to the yarn feeding speed of the yarn holding roller.

[0024] Therefore, it is possible to remove excess yarn from the yarn retaining rollers in a short time while reducing yarn tension using a winding device.

[0025] The yarn winding machine is preferably configured such that it includes a yarn splicing device for splicing the yarn on the feed side and the yarn on the package side. The control unit maintains the package stopped after the capturing device has captured the yarn on the package side and the rotation of the package has stopped, and until the splicing device has completed splicing.

[0026] Therefore, compared to reversing the roll just before splicing, the time spent on splicing can be shortened.

[0027] In the yarn winding machine, preferably, the capturing device attracts and captures the middle portion of the yarn while the yarn is connected between the lead-out device and the package.

[0028] Therefore, the capturing device can capture the yarn before the yarn end becomes unrestrained, thus enabling it to capture the yarn on the package side with a high probability. Attached Figure Description

[0029] Figure 1 This is a front view showing the overall structure of a spinning machine according to one embodiment of the present invention.

[0030] Figure 2 This is a side view of the spinning unit and the yarn receiving trolley.

[0031] Figure 3 This is a flowchart illustrating the process of handling yarn breakage.

[0032] Figure 4 This is a side view of the spinning unit and the yarn receiving trolley, showing the state immediately after the yarn has been cut.

[0033] Figure 5 This is a side view of the spinning unit and the yarn receiving trolley, showing the state of the yarn being captured by the capturing device.

[0034] Figure 6 This is a side view of the spinning unit and the yarn splicing trolley, showing the state in which the yarn on the package side and the yarn on the feed side are guided to the splicing device.

[0035] Figure 7This is a side view of the spinning unit and the yarn splicing trolley, showing the state in which the yarn on the package side and the yarn on the feed side are spliced.

[0036] Figure 8 This is a flowchart illustrating the handling of yarn breakage in a modified example. Detailed Implementation

[0037] A spinning machine (yarn winding machine) 1 according to one embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, "upstream side" and "downstream side" refer to the upstream side and downstream side in the direction of travel of the yarn 5, yarn sliver 4a or fiber bundle 4b, respectively.

[0038] like Figure 1 As shown, the spinning machine 1 includes a blower housing 111, a control box 112, multiple spinning units 2, and a yarn receiving trolley 80. The multiple spinning units 2 are arranged side by side in a predetermined direction (parallel direction). Each spinning unit 2 spins yarn to generate yarn 5 and forms a package 7.

[0039] A blower 113, which functions as a negative pressure source, is installed inside the blower housing 111. A central control device 115, a display unit 116, and an operation unit 117 are installed inside the control box 112.

[0040] The central control unit 115 centrally manages and controls all parts of the spinning machine 1. The central control unit 115 connects to the unit control unit 15 of each spinning unit 2 via signal lines (not shown in the diagram). Figure 2 The central control unit 115 and the unit control unit 15 are connected. In this embodiment, each spinning unit 2 has a unit control unit 15, but a predetermined number (e.g., two or four) of spinning units 2 may share a single unit control unit 15. The central control unit 115 and the unit control unit 15 are respectively configured as a well-known computer having a CPU, ROM, RAM, etc. (not shown).

[0041] The display unit 116 can display settings for the spinning units 2 and / or information related to the status of each spinning unit 2. The operation unit 117 is operated by the operator to set the spinning machine 1 and / or select information displayed on the display unit 116. The display unit 116 and the operation unit 117 may also be configured as a touch screen display.

[0042] like Figure 2 As shown, each spinning unit 2 includes a drafting device 21, a spinning device 22, a yarn storage device (lead-out device) 23, a capturing device 24, and a winding device 25. These devices are arranged sequentially from the upstream side to the downstream side in the yarn travel direction.

[0043] The yarn receiving carriage 80 is designed to move relative to each spinning unit 2. One yarn receiving carriage 80 is provided for each plurality of spinning units 2. Figure 1 The diagram shows one yarn receiving carriage 80, but the spinning machine 1 may also have multiple yarn receiving carriages 80. As described later, the yarn receiving carriage 80 includes a yarn receiving device 82, a suction tube 83, and a suction nozzle 84.

[0044] The drafting device 21 is located at the upper part of the spinning unit 2. The drafting device 21 has multiple pairs of drafting rollers. Each pair of drafting rollers consists of two drafting rollers.

[0045] Specifically, the drafting device 21 has four pairs of drafting rollers. The four pairs of drafting rollers are arranged sequentially from the upstream side to the downstream side: the rear roller pair 41, the third roller pair 42, the middle roller pair 43, and the front roller pair 44. Each drafting roller in the middle roller pair 43 is provided with a conveyor belt 45.

[0046] The four drafting roller pairs each have a drive roller and a driven roller that are opposite each other. Each of the four drafting roller pairs has a drive unit, such as a motor (not shown), on each drive roller. Each drive roller is driven to rotate about its axis by the drive unit. In this embodiment, a drive unit for each drive roller is provided for each spinning unit 2. Therefore, the drafting roller pair of a certain spinning unit 2 can operate independently relative to the drafting roller pairs of other spinning units 2. It should be noted that multiple drafting roller pairs of spinning units 2 can also be driven by a common drive unit.

[0047] The drafting device 21 stretches (drafts) a yarn 4a supplied from the yarn supply section (not shown) between the drive roller and driven roller of each drafting roller pair, thereby generating a fiber bundle 4b by clamping the yarn 4a supplied from the yarn supply section (not shown) between the drive roller and driven roller of each drafting roller pair. The fiber bundle 4b generated by the drafting device 21 is then supplied to the spinning device 22.

[0048] In this embodiment, the spinning device 22 is an air spinning device. The spinning device 22 generates yarn 5 by twisting the fiber bundle 4b generated by the drafting device 21 by causing a swirling airflow to act on it. The spinning device 22 is located downstream of the drafting device 21.

[0049] The spinning device 22 supplies the generated yarn 5 downstream. The spinning device 22 is equivalent to a yarn feeder for supplying the yarn 5. The yarn 5 generated by the spinning device 22 travels from the spinning device 22 toward the winding device 25 and is wound by the winding device 25. A yarn path for the yarn 5 to travel is formed between the spinning device 22 and the winding device 25.

[0050] The yarn holding device 23 draws out the yarn 5 generated by the spinning device 22 from the spinning device 22 and temporarily holds it. The yarn holding device 23 is located downstream of the spinning device 22 and upstream of the winding device 25.

[0051] The yarn retention device 23 includes a yarn retention roller 51, an electric motor 52, a yarn hanging component 53, a yarn unloading component 55, and a retention amount sensor 56.

[0052] The yarn retention roller 51 is driven to rotate by an electric motor 52. The yarn retention roller 51 winds the yarn 5 around its outer circumference and temporarily retains it. By rotating at a predetermined speed with the yarn 5 wound on its outer circumference, the yarn retention roller 51 can draw the yarn 5 out of the spinning device 22 at a predetermined speed.

[0053] The yarn-hanging component 53 is capable of hooking the yarn 5. The yarn-hanging component 53 is supported in a manner that allows it to rotate relative to the yarn-holding roller 51. For example, a torque (resistance torque) is applied to the yarn-hanging component 53 against its relative rotation relative to the yarn-holding roller 51 by a torque-generating mechanism, such as a magnetic mechanism. Therefore, if the tension applied to the yarn 5 is strong enough to overcome this resistance torque, the yarn-hanging component 53 rotates independently of the yarn-holding roller 51, unwinding the yarn 5 from the yarn-holding roller 51. If the tension applied to the yarn 5 is weaker than the resistance torque, the yarn-hanging component 53 rotates integrally with the yarn-holding roller 51, winding the yarn 5 onto the yarn-holding roller 51. It should be noted that a drive unit that rotates the yarn-hanging component 53 may also be provided.

[0054] The yarn release component 55 is positioned near the yarn holding roller 51. The yarn release component 55 is capable of performing a yarn release action that causes the yarn 5 to detach from the yarn holding component 53. The yarn release component 55 is as follows... Figure 1 The component shown is configured in an L-shape and is supported in a manner in which its ends can rotate.

[0055] Yarn release component 55 is configured to be able to Figure 2 The position shown (retreat position) and Figure 6 The yarn release member 55 moves between the indicated positions (yarn release positions). As it moves from the retracted position to the yarn release position, it passes through a space downstream of the yarn holding roller 51. If a yarn 5 is hooked on the yarn hanging member 53, the yarn release member 55 acts on the yarn 5 to detach it from the yarn hanging member 53. By detaching the yarn 5 from the yarn hanging member 53, the yarn 5 wound on the yarn holding roller 51 unwound from the yarn holding roller 51.

[0056] Each yarn release component 55 is provided in each spinning unit 2, and each yarn release component 55 has a separate drive unit (motor or working cylinder, etc.). The drive unit of the yarn release component 55 is controlled by the unit control unit (control unit) 15. Therefore, the yarn release component 55 can operate independently of the yarn release components 55 of other spinning units 2.

[0057] The yarn retention sensor 56 detects the amount of yarn retained on the yarn retention roller 51. The yarn retention sensor 56 is configured at an appropriate position facing the outer peripheral surface of the yarn retention roller 51. The yarn retention sensor 56 detects whether there is yarn 5 at this position (detection position). The yarn retention sensor 56 sends a detection signal to the unit control unit 15 indicating whether there is yarn 5 at the detection position.

[0058] The yarn holding device 23 can temporarily hold the yarn 5 on the outer circumferential surface of the yarn holding roller 51, thus functioning as a buffer for the yarn 5. As a result, it can eliminate adverse conditions (such as slack in the yarn 5) caused by the inconsistency between the spinning speed and the winding speed (the speed at which the yarn 5 is wound onto the package 7) in the spinning device 22 for some reason.

[0059] A yarn monitoring device 47 is provided between the spinning device 22 and the yarn storage device 23. The yarn monitoring device 47 detects the state of the yarn 5 at a position upstream of the yarn storage device 23 (on the spinning device 22 side). The yarn 5 generated by the spinning device 22 passes through the yarn monitoring device 47 before being stored by the yarn storage device 23.

[0060] The yarn monitoring device 47 uses a light sensor to monitor the quality of the traveling yarn 5 and detect yarn defects contained in the yarn 5. Yarn defects include, for example, abnormalities in the thickness of the yarn 5 and / or foreign objects contained in the yarn 5. When a yarn defect is detected, the yarn monitoring device 47 sends a yarn defect detection signal to the unit control unit 15. Alternatively, the yarn monitoring device 47 may use, for example, an electrostatic capacitive sensor to monitor the quality of the yarn 5 instead of a light sensor. The yarn monitoring device 47 may also be configured to detect abnormalities in the tension of the yarn 5 as yarn defects.

[0061] The unit control unit 15 determines whether to cut the yarn 5 based on the detection result of the yarn monitoring device 47. Cutting the yarn 5 is achieved by controlling the spinning based on the spinning device 22 to stop spinning. Cutting the yarn 5 can also be achieved by stopping the drafting based on the drafting device 21 (e.g., the rotation of the back roller pair 41). When the supply of fiber bundle 4b from the drafting device 21 to the spinning device 22 is stopped, spinning based on the spinning device 22 is substantially interrupted. Alternatively, a cutter can be provided in the spinning unit 2, and the unit control unit 15 can use the cutter to cut the yarn 5. Even when the yarn 5 is cut by the cutter, the unit control unit 15 still controls the spinning based on the spinning device 22 to substantially interrupt spinning.

[0062] When the yarn 5 breaks between the spinning device 22 and the winding device 25, the capturing device 24 attracts the yarn 5 from the package 7 side. The capturing device 24 is positioned downstream of the yarn holding device 23 and upstream of the winding device 25. Furthermore, the capturing device 24 is positioned to attract the yarn 5 located in the yarn path from the yarn holding device 23 to the winding device 25, and towards the yarn 5 located in that yarn path. In contrast, the suction nozzle 84 is positioned away from the yarn path from the yarn holding device 23 to the winding device 25 in the standby state. In this embodiment, the capturing device 24 is fixed with a constant distance relative to the yarn path, but it can also be slightly movable. For example, the capturing device 24 can also be slightly moved towards or away from the yarn path. In other words, the movable length of the capturing device 24 is shorter than the movable length of the suction nozzle 84. In either case, the capturing device 24 can be said to be fixed. On the other hand, the suction nozzle 84 captures the yarn 5 after rotational movement, as described later. Therefore, the suction nozzle 84 is not fixedly installed. When the yarn receiving carriage 80 (described later) operates on the spinning unit 2, the capturing device 24 is located upstream of the yarn receiving device 82 on the yarn receiving carriage 80. If the yarn 5 breaks off at a position downstream of the spinning device 22 and upstream of the capturing device 24, the capturing device 24 can capture the yarn 5 on the package 7 side at a position upstream of the yarn receiving device 82.

[0063] In the event of a breakage in yarn 5, the unit control unit 15 determines whether to use the capturing device 24 or not, and appropriately controls the capturing device 24 based on this decision. The capturing device 24 and the suction nozzle 84 are selected to capture the yarn 5 on the package 7 side in an alternative manner. Therefore, using the capturing device 24 means not using the suction nozzle 84, and not using the capturing device 24 means using the suction nozzle 84.

[0064] The capturing device 24 includes a suction tube 61 and a yarn capturing detection sensor 63. A suction port 62 is formed at the front end (longitudinal end) of the suction tube 61. The suction port 62 faces the yarn path opening formed in the spinning unit 2. The suction port 62 of the capturing device 24 can also be configured to face the formed yarn path opening for capturing. The suction tube 61 is connected to a negative pressure source such as a blower 113 via piping. This allows a suction flow (attraction force) to be generated in the suction port 62 (within the suction tube 61). Alternatively, a shutter (not shown) can be provided in the capturing device 24, and a suction flow can be generated in the suction port 62 by opening the shutter when needed. In this embodiment, the yarn capturing detection sensor 63 is disposed downstream of the suction port 62 of the capturing device 24. The yarn capturing detection sensor 63 detects whether the capturing device 24 has successfully captured the yarn 5 on the package 7 side.

[0065] A yarn guide 48 and a waxing device 49 are provided at a position downstream of the yarn storage device 23 and upstream of the winding device 25.

[0066] The yarn guide 48 is positioned downstream of the yarn retention roller 51. The yarn guide 48 contacts and guides the yarn 5 so that the yarn 5 travels along the yarn path.

[0067] The waxing device 49 holds the wax to be applied to the yarn 5. The waxing device 49 applies wax to the traveling yarn 5 between the yarn holding device 23 and the winding device 25. If the yarn 5 is not waxed before winding the package 7, the waxing device 49 can be completely removed from the spinning unit 2, or only the wax can be removed from the waxing device 49.

[0068] The winding device 25 winds the yarn 5 after it has passed through the yarn storage device 23 to form a package 7. The winding device 25 is located downstream of the yarn storage device 23.

[0069] The winding device 25 includes a cradle device 71, a winding rotation device 72, and a traversing device 73.

[0070] The cradle assembly 71 has a pair of cradle arms 74. The cradle assembly 71 is capable of rotatably supporting the yarn tube 7a (and thus the package 7) for winding the yarn 5 between the pair of cradle arms 74. The cradle arms 74 are rotatable about a pivot 75.

[0071] The package rotation device 72 includes a winding drum 76 and a drum drive motor 77. The winding drum 76 can contact the outer peripheral surface of the yarn tube 7a or the package 7. The output shaft of the drum drive motor 77 is connected to the winding drum 76 via a suitable mechanism. By driving the winding drum 76 with the drum drive motor 77, the package 7 can be rotated in the winding direction. The drum drive motor 77 is configured to rotate in both directions. Therefore, the package 7 can be rotated in the opposite direction of the winding direction (reverse rotation).

[0072] The traversing device 73 includes a traversing guide 78 and a traversing drive motor 79. The traversing guide 78 is capable of hooking the yarn 5 wound onto the package 7. The traversing guide 78 is capable of reciprocating in the width direction of the package 7. The output shaft of the traversing drive motor 79 is connected to the traversing guide 78 via a suitable mechanism. By reciprocatingly driving the traversing guide 78 with the yarn 5 held by the traversing guide 78, the yarn 5 wound onto the package 7 can be traversed.

[0073] The winding device 25 reciprocates the traverse guide 78 of the traverse device 73 while rotating the winding drum 76 of the package rotation device 72. Thus, the winding device 25 winds the yarn 5 onto the package 7 while simultaneously traversing the yarn 5.

[0074] In this embodiment, each spinning unit 2 has a separate bobbin drive motor 77 for its individual winding bobbin 76. Additionally, each spinning unit 2 has a separate traverse drive motor 79 for its individual traverse guide 78. Therefore, the winding bobbin 76 and the traverse guide 78 can operate independently of the winding bobbins 76 and traverse guides 78 of the other spinning units 2.

[0075] like Figure 1 As shown, a track 101 is provided on the spinning machine 1. The track 101 is configured to extend along the arrangement direction of the plurality of spinning units 2. The yarn receiving carriage 80 is configured to travel on the track 101. Thus, the yarn receiving carriage 80 can move relative to the plurality of spinning units 2.

[0076] The yarn splicing trolley 80 travels to the working position corresponding to the spinning unit 2 where the yarn 5 has broken, and performs the yarn splicing process in the spinning unit 2. The yarn splicing trolley 80 works in conjunction with the capturing device 24 or other devices provided by the spinning unit 2, or the yarn splicing process is performed using the devices provided by the yarn splicing trolley 80.

[0077] The yarn receiving trolley 80 has traveling wheels 81, a yarn receiving device 82, a suction pipe 83, a suction nozzle 84, and a trolley control unit 85.

[0078] The traveling wheels 81 are configured to be driven to rotate by a drive mechanism (e.g., a motor) that is not shown in the figure. By driving the traveling wheels 81, the yarn receiving carriage 80 can travel relative to each of the plurality of spinning units 2.

[0079] The straw 83 is a component with a tubular portion. An opening is formed at the front end of the straw 83. The straw 83 is connected to a suitable negative pressure source (e.g., a blower 113). Therefore, a suction flow can be generated at the opening at the front end of the straw 83. The straw 83 is supported in a rotatable manner. By rotating the straw 83, its front opening can be brought closer to the spinning device 22 to capture the yarn 5 on the feed section side (the yarn 5 on the spinning device 22 side).

[0080] The suction nozzle 84 is a component with a tubular portion. An opening is formed at the front end of the suction nozzle 84. The suction nozzle 84 is connected to a negative pressure source such as a blower 113. Therefore, a suction flow can be generated at the opening at the front end of the suction nozzle 84. The suction nozzle 84 is supported in a rotatable manner. By rotating the suction nozzle 84, its front opening can be brought closer to the winding device 25 to capture the yarn 5 on the side of the package 7.

[0081] The yarn splicing device 82 includes a yarn splicing section 82a and cutters 82b and 82c. The yarn splicing device 82 can take in the yarn 5 from the feed section side and the yarn 5 from the package 7 side by actuating a yarn gathering rod (not shown). The cutter 82b cuts the yarn 5 from the package 7 side between the yarn splicing section 82a and the capturing device 24, or between the yarn splicing section 82a and the suction nozzle 84. The cutter 82c cuts the yarn 5 from the feed section side between the yarn splicing section 82a and the suction tube 83. The yarn splicing section 82a splices the yarn 5 from the feed section side and the yarn 5 from the package 7 side. In this embodiment, the yarn splicing device 82 is a splicing device that uses a swirling airflow to twist the yarn ends together. The yarn splicing device 82 is not limited to this splicing device; for example, it can also be a mechanical knotter.

[0082] The trolley control unit 85 is configured as a well-known computer with a CPU, ROM, RAM, etc. (not shown). The trolley control unit 85 controls the yarn splicing process performed by the yarn splicing trolley 80 by controlling the operation of the various parts of the yarn splicing trolley 80.

[0083] Next, refer to Figures 3 to 7 This explains the process of using the capturing device 24 to handle the breakage of yarn 5.

[0084] The following description explains the process of detecting yarn defects and cutting the yarn 5. This process is performed even if the yarn 5 breaks due to increased tension applied by the spinning device 22 or drafting device 21. Furthermore, the unit control unit 15 will determine the appropriate timing for using the capturing device 24.

[0085] As described above, the unit control unit 15 determines whether the yarn 5 has a defect based on the detection result of the yarn monitoring device 47 (S101). If the unit control unit 15 determines that the yarn 5 has a defect, it stops spinning based on the spinning device 22 and cuts the yarn 5 (S102). Figure 4 The image shows the state of yarn 5 immediately after it has been cut.

[0086] Here, the difficulty of capturing the yarn 5 by the capturing device 24 will be explained. The capturing device 24 attracts and captures the yarn 5 located between the yarn holding device 23 and the winding device 25. However, because the yarn 5 is under winding tension, it is taut, making it difficult for the attraction flow to act on it. Therefore, sometimes the capture of the yarn 5 fails. To eliminate this problem, the unit control unit 15 controls the reduction of the tension of the yarn 5. The control of reducing the tension of the yarn 5 is performed during the capture standby period, after the yarn 5 is disconnected and before the yarn 5 on the package 7 side is captured by the capturing device 24 while the yarn 5 is connected between the yarn holding device 23 and the package 7.

[0087] The unit control unit 15 determines whether it is time to reduce tension after cutting the yarn 5 (S103). Immediately after cutting the yarn 5, a large amount of yarn 5 remains in the yarn retention device 23. The yarn 5 remaining in the yarn retention device 23 (especially the yarn 5 located downstream) does not contain yarn defects. Therefore, the unit control unit 15 waits to execute tension reduction control until the yarn 5 remaining in the yarn retention device 23 is wound onto the package 7 to a certain extent. The unit control unit 15 determines, for example, that it is time to reduce tension when a predetermined time has elapsed since the retention amount sensor 56 detected no yarn 5. However, the unit control unit 15 may also determine that it is time to reduce tension when a predetermined time has elapsed since cutting the yarn 5, or when the retention amount sensor 56 detects no yarn 5.

[0088] When the unit control unit 15 determines that the tension has decreased, it causes the capturing device 24 to generate an attraction flow (S104), and after stopping the rotation of the yarn holding roller 51 and the rotation of the package 7 in the winding direction based on the winding device 25, it starts the reversal of the package 7 based on the winding device 25 (S105). Steps S104 and S105 can start simultaneously, or either step can start first. With the rotation of the yarn holding roller 51 stopped, by reversing the package 7, the tension of the yarn 5 between the yarn holding device 23 and the package 7 decreases, and the yarn 5 becomes slack. As a result, the yarn 5 is more easily affected by the attraction flow of the capturing device 24, and thus more easily captured by the capturing device 24. It should be noted that stopping the rotation of the yarn holding roller 51 is not necessary; the package 7 can also be reversed while the yarn holding roller 51 is still rotating. In this case, the rotational speed of the yarn retention roller 51 can be the same as before, continue to decrease, or maintain a low speed after deceleration. Figure 5 The image shows the state in which yarn 5 is captured by the capturing device 24. (Example) Figure 5 As shown, in this embodiment, when the yarn 5 is connected between the yarn storage device 23 and the package 7, the middle part of the yarn 5 is attracted and captured by the capturing device 24.

[0089] Subsequently, by restarting the rotation of the yarn holding roller 51 and continuing to unwind the yarn 5 from the yarn holding roller 51, the yarn end of the yarn 5 on the package 7 side is captured by the capturing device 24. Furthermore, by capturing the yarn 5 by the capturing device 24, the yarn 5 on the package 7 side is located near the yarn splicing device 82. Alternatively, in order to place the yarn 5 on the package 7 side near the yarn splicing device 82, the yarn splicing device 82 may be configured to be movable in the front-back direction relative to the yarn path.

[0090] Next, the unit control unit 15 determines whether the reversal amount has exceeded a threshold (S106). By increasing the reversal amount, the yarn 5 captured and held by the capturing device 24 becomes longer. As a result, the capturing device 24 stabilizes its holding of the yarn 5; in other words, the yarn 5 is less likely to fall off the capturing device 24. For example, it is preferable to set a threshold for the reversal amount of the yarn 5 unwound from the package 7 to be 20 mm or more, and more preferably, a threshold for the reversal amount to be 30 mm or more but less than 100 mm.

[0091] Furthermore, the unit control unit 15 adjusts the reversal amount threshold according to the type of yarn 5. When the yarn 5 is of a type that is difficult to attract by the capturing device 24, it is preferable to increase the reversal amount threshold. For example, the attraction flow is difficult to apply to yarns 5 with a low count (roving 5). Therefore, the unit control unit 15 adjusts the reversal amount threshold based on, for example, the count of the yarn 5 received from the central control device 115. Alternatively, the reversal amount threshold may be adjusted based on the yarn count or, on a further basis, the raw material of the yarn 5.

[0092] Furthermore, the unit control unit 15 can also adjust the reversal amount threshold based on the length of the yarn defect. For example, in the case of a long yarn defect, it is preferable to increase the reversal amount threshold in order to remove all yarn defects. Therefore, the unit control unit 15 sets the reversal amount threshold for long yarn defects to be larger than the reversal amount threshold for short yarn defects (e.g., thick knots or neps). The unit control unit 15 determines a detected yarn defect as a long yarn defect if its length is above a predetermined value, and determines a detected yarn defect as a short yarn defect if its length is below the predetermined value. It should be noted that in this embodiment, the length of the yarn defect is divided into two levels, but it can also be divided into three or more levels.

[0093] When the unit control unit 15 determines that the amount of reversal of the package 7 has reached the reversal amount threshold, it stops the reversal of the package 7 (S107). Regarding the method for determining the reversal amount threshold, either one method can be used, or a combination of two or more methods can be employed. It should be noted that the process of pre-determining the reversal amount threshold is not mandatory and can be omitted. In this case, the package 7 can be reversed until the yarn capture detection sensor 63 detects the yarn 5.

[0094] Next, the unit control unit 15 instructs the trolley control unit 85 to capture the yarn 5 on the yarn feeding side and guide it to the yarn receiving device 82 using the suction tube 83 (S108). Specifically, the suction tube 83 is rotated so that its front opening approaches the vicinity of the spinning device 22. Then, spinning is restarted by the spinning device 22, and the suction tube 83 attracts and captures the yarn 5 generated by the spinning device 22. Afterwards, the suction tube 83, while maintaining the captured yarn 5, moves to the yarn guiding position, thereby guiding the yarn 5 on the yarn feeding side to the vicinity of the yarn receiving device 82. In this series of actions, the yarn 5 on the yarn feeding side is again stored in the yarn storing roller 51. Figure 6 The diagram shows the state after the yarn 5 on the package 7 side and the yarn 5 on the feed section side are guided to the yarn splicing device 82.

[0095] Next, the unit control unit 15 instructs the trolley control unit 85 to use the yarn splicing device 82 to splice the yarn 5 on the package 7 side with the yarn 5 on the feed section side (S109). The detailed splicing process is as described above. Figure 7 The state during the yarn splicing process is shown. After the yarn splicing is completed, the unit control unit 15 restarts the winding of the yarn 5 into the package 7 (S110).

[0096] In this embodiment, the tension of the yarn 5 is reduced by reversing the package 7, thereby making it easier for the capturing device 24 to capture the yarn 5. Therefore, it is not necessary to reverse the package 7 after the capture standby period has elapsed. Specifically, the unit control unit 15 maintains the rotation of the package 7 at a standby (rotation is prohibited) after the reversal of the package 7 stops and until the yarn splicing based on the splicing device 82 is completed. It should be noted that the package 7 can also be reversed after the capture standby period has elapsed.

[0097] In contrast, Patent Document 1 describes reducing the tension of the yarn on the package side by reversing the package after the yarn is guided to the splicer by the suction tube and nozzle. That is, the timing and purpose of reversing the package differ between this embodiment and Patent Document 1. Originally, Patent Document 1 did not disclose a device equivalent to the capturing device 24 of this embodiment.

[0098] Next, refer to Figure 8 The following describes a variation of the above-described embodiments. Furthermore, any matters described in the above embodiments can also be applied to this variation, provided they do not contradict each other.

[0099] In the above embodiment, the tension of the yarn 5 is reduced by reversing the package 7. In contrast, in this modified example, the tension of the yarn 5 is reduced by making the winding speed of the package 7 slower than the yarn feeding speed of the yarn storage device 23. A detailed description will follow.

[0100] Figure 8 The flowchart steps S201 to S204 and Figure 3 The flowcharts S101 to S104 are the same. Figure 8 Steps S209 to S211 of the flowchart Figure 3 The flowcharts S107 to S110 are the same. Therefore, steps S205 to S208, which are unique processes in this variation, will be described.

[0101] At the same time or near the moment when the suction flow is generated at the suction port 62 of the capturing device 24, the unit control unit 15 activates the yarn release member 55 (S205). Specifically, the yarn release member 55 is moved from the retracted position to the yarn release position. As a result, the yarn 5 is released from the yarn hanging member 53, and thus the yarn 5 can be relaxed based on the speed difference between the winding speed and the yarn feeding speed. After the yarn 5 passes through the yarn release member 55 and is attracted by the capturing device 24, the yarn release member 55 moves from the yarn release position to the retracted position.

[0102] Next, the unit control unit 15 adjusts the winding speed to be slower than the yarn feeding speed (S206). As a result, the yarn 5 between the yarn holding roller 51 and the package 7 becomes slack. In this embodiment, the unit control unit 15 stops the rotation of the package 7 by setting the winding speed to zero, and reduces the yarn feeding speed compared to the yarn feeding speed during the spinning process of the spinning device 22. The purpose of reducing the yarn feeding speed is to allow the yarn 5 to gradually slack. However, the speed adjustment in this embodiment is just one example and is not limited to it. For example, the unit control unit 15 may not change the yarn feeding speed. Alternatively, the unit control unit 15 may not set the winding speed to zero but maintain a low speed.

[0103] After slowing down the winding speed compared to the yarn feeding speed, the unit control unit 15 determines whether a predetermined time has elapsed (S207). The predetermined time is predetermined, for example, based on the time elapsed until the capturing device 24 captures the yarn 5. If the unit control unit 15 determines that the predetermined time has elapsed, it increases the yarn feeding speed (S208). As a result, the yarn 5 remaining on the yarn holding device 23 can be unwound in a short time. After the yarn 5 remaining on the yarn holding device 23 is unwound, the rotation of the yarn holding roller 51 can be stopped.

[0104] As described above, the spinning machine 1 of the above embodiments and modifications includes a spinning device 22, a yarn holding device 23, a winding device 25, a capturing device 24, and a unit control unit 15. The spinning device 22 is used to supply yarn 5. The yarn holding device 23 draws the yarn 5 out from the spinning device 22. The winding device 25 winds the yarn 5 supplied by the spinning device 22 to form a package 7. The capturing device 24 is fixedly disposed in the yarn travel direction between the yarn holding device 23 and the winding device 25, and is directed toward the position of the yarn 5 located in the yarn path from the yarn holding device 23 to the winding device 25, attracting and capturing the yarn 5 on the package 7 side when the yarn 5 is broken. After the yarn 5 is disconnected and while the yarn is connected between the yarn storage device 23 and the package 7, the unit control unit 15 controls the tension of the yarn 5 between the yarn storage device 23 and the package 7 during the capture standby period before the yarn 5 on the package 7 side is captured by the capture device 24.

[0105] Therefore, since the capturing device 24 captures the yarn 5 between the yarn holding device 23 and the package 7, it is easier to capture the yarn 5 on the package 7 side compared to capturing the yarn 5 attached to the package 7. Furthermore, since the tension of the yarn 5 between the yarn holding device 23 and the package 7 is reduced, the suction flow of the capturing device 24 is more easily applied to the yarn 5. As a result, the yarn 5 on the package 7 side can be captured with a high probability.

[0106] In the spinning machine 1 described in the above embodiments and variations, the yarn retention device 23 includes a yarn retention roller 51 and a yarn hanging member 53. The yarn retention roller 51 is positioned downstream of the spinning device 22 in the yarn travel direction and upstream of the winding device 25 in the yarn travel direction, temporarily retaining the yarn 5 by winding it around its outer peripheral surface. The yarn hanging member 53 winds the yarn 5 onto the outer peripheral surface of the yarn retention roller 51 while in contact with it.

[0107] Therefore, since the yarn 5 is stored on the yarn storage roller 51, the time from when the yarn 5 breaks until the yarn end of the yarn 5 on the package 7 side passes through the capturing device 24 can be ensured. Thus, the tension of the yarn 5 can be easily controlled to reduce its tension.

[0108] In the spinning machine 1 of the above-described embodiments and variations, the unit control unit 15 reduces the tension of the yarn 5 between the yarn storage device 23 and the package 7 by reversing the winding direction of the package 7 relative to the yarn 5 during the capture standby period.

[0109] Therefore, the tension of yarn 5 can be reduced through simple processing. In addition, the degree of tension reduction and / or the degree of yarn 5 relaxation can be adjusted simply by changing the amount of reversal of package 7.

[0110] In the spinning machine 1 of the above embodiment, the unit control unit 15 reverses the package 7 during the capture standby period so that the yarn 5 with a diameter of 20 mm or more is unwound from the package 7.

[0111] Therefore, since the yarn 5 can be greatly relaxed, the suction flow of the capturing device 24 can easily act on the yarn 5.

[0112] In the spinning machine 1 of the above embodiment, the unit control unit 15 adjusts the reverse amount of the package 7 according to the type of yarn 5.

[0113] Therefore, even for yarns 5 that are difficult to be attracted by the capturing device 24, the capturing device 24 can capture the yarns 5 on the package 7 side with a high probability by increasing the amount of reversal.

[0114] The spinning machine 1 of the above embodiment includes a yarn monitoring device 47 for monitoring the state of the yarn 5. Short yarn defects are called short yarn defects, and yarn defects longer than short yarn defects are called long yarn defects. Compared to the case where the yarn defect detected by the yarn monitoring device 47 is a short yarn defect, the unit control unit 15 increases the reversal amount of the package 7 when the yarn defect detected by the yarn monitoring device 47 is a long yarn defect.

[0115] Therefore, even when the yarn defect is long, the yarn defect can be removed from yarn 5 by increasing the amount of reversal.

[0116] The spinning machine 1 of the above embodiment also includes a yarn release member 55 that acts on the yarn 5 to release the yarn 5 from the yarn hanging member 53. During the capture standby period, the unit control unit 15 reduces the tension of the yarn 5 between the yarn holding device 23 and the package 7 by slowing down the winding speed of the package 7 compared with the yarn feeding speed of the yarn holding roller 51 while the yarn 5 is released from the yarn hanging member 53 using the yarn release member 55.

[0117] Therefore, the tension of the yarn 5 can be reduced by using the yarn retention device 23.

[0118] The spinning machine 1 described in the above-described modification can also have a neutralization mechanism that neutralizes the effect of the yarn holding member 53 on the yarn 5, instead of the yarn release member 55. The neutralization mechanism can be a stop that stops the rotation of the yarn holding member 53 by contacting it. The stop is a retractable member that extends and contacts the yarn holding member 53 when its rotation stops, thereby stopping its rotation. The neutralization mechanism can also be a motor that stops the rotation of the yarn holding member 53 independently of the rotation of the yarn holding roller 51 and stops the yarn holding member 53 at a position where it is retracted from the yarn 5. During the capture standby period, the unit control unit 15 reduces the tension of the yarn 5 between the yarn holding device 23 and the package 7 by slowing down the winding speed of the package 7 compared to the feeding speed of the yarn holding roller 51 while the yarn 5 is detached from the yarn holding member 53 using the yarn release member 55.

[0119] Therefore, the tension of the yarn 5 can be reduced by using the yarn retention device 23.

[0120] In the above-described modified spinning machine 1, the unit control unit 15 increases the yarn feeding speed of the yarn holding roller 51 after slowing down the winding speed of the package 7 compared to the yarn feeding speed of the yarn holding roller 51.

[0121] Therefore, it is possible to remove excess yarn from the yarn retention roller 51 in a short time while reducing the tension of the yarn 5 using the winding device 25.

[0122] The spinning machine 1 of the above-described embodiments and variations includes a yarn splicing device 82 for splicing the yarn 5 on the feeding section side and the yarn 5 on the package 7 side. The unit control unit 15 maintains the package 7 stopped after the capturing device 24 has finished capturing the yarn 5 on the package 7 side and stopping the rotation of the package 7, and until the yarn splicing device 82 has finished splicing.

[0123] Therefore, compared to reversing the roll 7 just before splicing, the time spent on splicing can be shortened.

[0124] In the spinning machine 1 of the above-described embodiments and variations, the capturing device 24 attracts and captures the middle portion of the yarn 5 while the yarn 5 is connected between the yarn storage device 23 and the package 7.

[0125] Therefore, the capturing device 24 can capture the yarn 5 before the yarn end becomes unrestrained, thus enabling it to capture the yarn 5 on the package 7 side with a high probability.

[0126] The preferred embodiments of the present invention have been described above, but the above structure can be modified, for example, as follows.

[0127] In the spinning unit 2, a yarn guide may also be provided between the yarn retention roller 51 and the suction port 62 of the capturing device 24. The suction port 62 is configured to open between the yarn guide and the yarn guide 48. In this case, by controlling the tension reduction, the yarn 5 is relaxed between the yarn guide and the yarn guide 48.

[0128] The spinning machine 1 is equipped with a capturing device 24 and a suction nozzle 84, but the suction nozzle 84 can be omitted. The spinning machine 1 may also omit the yarn feeding trolley 80, and instead have the necessary devices for yarn feeding in each spinning unit 2.

[0129] The flowchart shown in the above embodiment is an example, and some processes may be omitted, some processes may be modified, or new processes may be added. For example, the process of causing the capturing device 24 to generate a suction flow may also occur before the tension decreases. In this case, the capturing device 24 attracts and captures the yarn 5 just after the yarn 5 between the yarn storage device 23 and the winding device 25 has just decreased in tension and become relaxed.

[0130] It can also be part of the processing performed by the central control device 115 or the trolley control unit 85, as described in the above embodiment as being performed by the unit control unit 15.

[0131] The spinning machine 1 may also include an auxiliary device for attracting the yarn 5 to the auxiliary capture device 24. For example, the auxiliary device is positioned opposite the suction port 62 of the capture device 24. The auxiliary device presses the yarn 5 toward the suction port 62 of the capture device 24 by jetting gas, or by contacting and pressing the yarn 5 toward the suction port 62 of the capture device 24.

[0132] In the above embodiment, the yarn 5 is drawn from the spinning device 22 using the yarn retention device 23. However, instead of the yarn retention device 23, a pair of guide rollers (drawing devices) can be provided as a drawing device downstream of the spinning device 22, and the yarn 5 can be drawn from the spinning device 22 using the guide rollers. In this case, the yarn retention device 23 and / or a mechanical compensator can also be provided downstream of the guide rollers.

[0133] In the spinning machine 1, each device is arranged in the height direction of the machine table such that the yarn 5 supplied from the upper side is wound on the lower side. However, each device may also be arranged such that the yarn 5 supplied from the lower side is wound on the upper side.

[0134] This invention is not limited to spinning machines; for example, it can also be applied to other yarn winding machines such as automatic winding machines. When this invention is applied to an automatic winding machine, the yarn feeding section is the part that holds the yarn feeding tube and draws the yarn out from the yarn feeding tube.

Claims

1. A yarn winding machine, characterized in that, have: A yarn feeding section used to supply yarn; A yarn extraction device that extracts yarn from the yarn feeding section; A winding device that winds the yarn supplied by the yarn feeder to form a package; A straw that catches the yarn supplied from the yarn feeding section; A capturing device is fixedly positioned in the yarn travel direction between the lead-out device and the winding device, and toward the position of the yarn located in the yarn path from the lead-out device to the winding device, which attracts and captures the yarn on the package side when the yarn breaks. A yarn splicing device that splices the yarn on the feeding side captured by the suction tube with the yarn on the package side captured by the capturing device. and The control unit controls the tension of the yarn between the lead-out device and the package during a capture standby period after the yarn is disconnected and while the yarn is connected between the lead-out device and the package, before the yarn on the package side is captured by the capture device.

2. The yarn winding machine according to claim 1, characterized in that, The extraction device includes: A yarn holding roller is positioned downstream of the yarn feeding section and upstream of the yarn traveling direction compared to the winding device, and temporarily holds the yarn by winding it around the outer peripheral surface. and A yarn-winding component that winds yarn onto the outer circumferential surface of the yarn-winding roller while rotating integrally with the yarn-winding roller in contact with the yarn.

3. The yarn winding machine according to claim 1, characterized in that, The control unit reduces the yarn tension between the take-up device and the package by reversing the winding direction of the package relative to the yarn during the capture standby period.

4. The yarn winding machine according to claim 2, characterized in that, The control unit reduces the yarn tension between the take-up device and the package by reversing the winding direction of the package relative to the yarn during the capture standby period.

5. The yarn winding machine according to claim 3, characterized in that, The control unit reverses the package during the capture standby period to unwind yarn of 20 mm or more from the package.

6. The yarn winding machine according to claim 4, characterized in that, The control unit reverses the package during the capture standby period to unwind yarn of 20 mm or more from the package.

7. The yarn winding machine according to claim 3, characterized in that, The control unit adjusts the amount of reversal of the package according to the type of yarn.

8. The yarn winding machine according to claim 4, characterized in that, The control unit adjusts the amount of reversal of the package according to the type of yarn.

9. The yarn winding machine according to claim 5, characterized in that, The control unit adjusts the amount of reversal of the package according to the type of yarn.

10. The yarn winding machine according to claim 6, characterized in that, The control unit adjusts the amount of reversal of the package according to the type of yarn.

11. The yarn winding machine according to any one of claims 3 to 10, characterized in that, A yarn monitoring device equipped with a function to monitor the condition of the yarn. In the case where short yarn defects are called short yarn defects and yarn defects longer than short yarn defects are called long yarn defects... Compared to the case where the yarn defect detected by the yarn monitoring device is a short yarn defect, the control unit increases the amount of reversal of the package when the yarn defect detected by the yarn monitoring device is a long yarn defect.

12. The yarn winding machine according to claim 2, characterized in that, It also includes a yarn release component that acts on the yarn to detach the yarn from the yarn-hanging component. During the capture standby period, the control unit reduces the yarn tension between the take-up device and the package by slowing down the winding speed of the package compared to the yarn feeding speed of the yarn holding roller while the yarn is detached from the yarn using the yarn detachment component.

13. The yarn winding machine according to claim 2, characterized in that, It also includes a neutralization mechanism that disables the effect of the yarn hanging component on the yarn. The invalidation mechanism is one of the stop and the motor. The stopper stops the rotation of the yarn-hanging component by contacting it. The motor is capable of stopping the rotation of the yarn-hanging component independently of the rotation of the yarn-retaining roller, and stopping the yarn-hanging component at a position where it retracts from the yarn. During the capture standby period, the control unit reduces the yarn tension between the take-up device and the package by slowing down the winding speed of the package compared to the yarn feeding speed of the yarn holding roller in a state where the effect of the yarn hanging component on the yarn is nullified by the invalidation mechanism.

14. The yarn winding machine according to claim 12, characterized in that, After the control unit slows down the winding speed of the package compared to the yarn feeding speed of the yarn holding roller, it increases the yarn feeding speed of the yarn holding roller.

15. The yarn winding machine according to claim 13, characterized in that, After the control unit slows down the winding speed of the package compared to the yarn feeding speed of the yarn holding roller, it increases the yarn feeding speed of the yarn holding roller.

16. The yarn winding machine according to any one of claims 1-10 and 12-15, characterized in that, The control unit maintains the stop of the roll after the capturing device has captured the yarn on the roll side and the rotation of the roll has stopped, and until the splicing based on the splicing device has been completed.

17. The yarn winding machine according to claim 11, characterized in that, The control unit maintains the stop of the roll after the capturing device has captured the yarn on the roll side and the rotation of the roll has stopped, and until the splicing based on the splicing device has been completed.

18. The yarn winding machine according to any one of claims 1-10, 12-15, and 17, characterized in that, The capturing device attracts and captures the middle portion of the yarn while the yarn is connected between the lead-out device and the package.

19. The yarn winding machine according to claim 11, characterized in that, The capturing device attracts and captures the middle portion of the yarn while the yarn is connected between the lead-out device and the package.

20. The yarn winding machine according to claim 16, characterized in that, The capturing device attracts and captures the middle portion of the yarn while the yarn is connected between the lead-out device and the package.

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