spinning machine

Abstract

The present invention relates to a spinning machine which flexibly performs the capturing of the yarn on the side of the package. The spinning machine is provided with a suction device (29) and a suction nozzle (109). Depending on the main cause of the interruption of the spinning by the spinning device (23), the state at the start of the spinning by the spinning device (23), or the yarn type of the spun yarn (33), the use of which of the suction device (29) and the suction nozzle (109) is changed.

Description

Technical Field

[0001] This invention relates to a spinning machine. Background Technology

[0002] Spinning machines capable of splicing yarns before the start of yarn winding have been known for a long time. Japanese Patent Application Publication No. 2014-9052 discloses a spinning frame as such a spinning machine.

[0003] Japanese Patent Application Publication No. 2014-9052 discloses a spinning frame comprising multiple spinning units and a splicing carriage. Each spinning unit includes a spinning device for generating fine yarn and a take-up device for taking the fine yarn to form a package. When the yarn breaks in a spinning unit, the splicing carriage can travel to that spinning unit.

[0004] The splicing trolley is equipped with a suction tube, a suction nozzle, and a splicing device. The suction tube captures one side of the broken yarn (the yarn on the spinning device side) and guides it to the splicing device. The suction nozzle captures the other side of the broken yarn (the yarn on the take-up device side) and guides it to the splicing device. The splicing device uses these guided yarns to splice each other.

[0005] In the configuration described in Japanese Patent Application Publication No. 2014-9052, the spinning frame uses the suction nozzle only for capturing the yarn on the package side. Summary of the Invention

[0006] The purpose of this invention is to provide a spinning machine capable of flexibly capturing yarn on the package side.

[0007] According to a first aspect of the present invention, a spinning machine is provided with the following configuration: The spinning machine includes a spinning device, a take-up device, a yarn storage device, a fixed catch device, and a movable catch device. The spinning device generates yarn by spinning a fiber bundle and supplies the yarn. The take-up device takes the yarn supplied from the spinning device to form a package. The yarn storage device is positioned midway along the yarn travel path formed between the spinning device and the take-up device. When the yarn breaks between the spinning device and the take-up device, the fixed catch device catches the yarn on the package side, i.e., the catch portion. The fixed catch device is provided for the yarn travel path. The movable catch device catches the catch portion. The movable catch device moves between an approach position close to the take-up device and a retracted position further away from the take-up device. The spinning machine uses either the fixed catch device or the movable catch device depending on the main reason for the interruption of spinning, the state at the start of spinning, or the type of yarn.

[0008] Therefore, when yarn breakage occurs, it is possible to flexibly distinguish between using a fixed capture device and a movable capture device. Thus, in order to begin yarn take-up, either a fixed capture device or a movable capture device can be used to efficiently prepare the yarn on the take-up side. As a result, the success rate of yarn capture on the take-up side of the spinning machine as a whole can be improved, and the time required to prepare for starting yarn take-up can be reduced.

[0009] Preferably, it has a control device that controls at least the spinning device, the take-up device, the fixed capture device, and the movable capture device.

[0010] Therefore, it is possible to change which of the fixed capture device and the movable capture device is used.

[0011] Preferably, when using a fixed capture device, the winding device stops winding when the capture portion is in a region that can be captured by the fixed capture device, or the winding device slows down winding when the capture portion is in a region that can be captured by the fixed capture device, so that the yarn can travel in a state that can be captured by the fixed capture device.

[0012] Therefore, the yarn on the package side can be easily captured by the fixed capture device.

[0013] Preferably, after the winding of the yarn on the package side stops or the winding decelerates, if the fixed capture device fails to capture the yarn on the package side, the winding device winds up the yarn on the package side, and if the capture part is wound in the package when the spinning device starts spinning, the movable capture device captures the capture part wound in the package.

[0014] This allows for reliable capture of the yarn on the package side.

[0015] Preferably, when using a movable capture device, the winding device winds up the yarn at least before the capture portion is positioned downstream of the fixed capture device in the yarn travel direction.

[0016] Therefore, the yarn on the package side can be easily captured by the movable capture device.

[0017] Preferably, a fixed capture device is used in the event of a spinning interruption in the spinning device.

[0018] Therefore, fixed capture devices can be used effectively.

[0019] Preferably, the device includes a detection device that detects yarn breakage on the upstream side of the yarn travel direction by comparing the yarn storage device. As the main cause of the spinning interruption of the spinning device, when the spinning device is interrupted by detecting yarn breakage, it is determined whether the fixed capture device can capture the part. If the determination result is yes, the fixed capture device is used; if the determination result is no, the movable capture device is used.

[0020] This allows for an increase in the frequency of use of the fixed capture device. Consequently, the time required to prepare for starting to wind up the yarn can be further reduced.

[0021] Preferably, when spinning is interrupted due to yarn breakage before the spinning of the spinning device is interrupted, a movable capture device is used when spinning is resumed afterward, as the main reason for the interruption of spinning in the spinning device.

[0022] This allows for reliable capture of the yarn on the package side. Furthermore, the use of a movable capture device enables the spinning machine to efficiently prepare the yarn on the package side.

[0023] Preferably, it includes a setting unit that sets a setting to prevent the fixed capturing device from capturing the capturing part.

[0024] Therefore, it can appropriately address situations where the fixed capture device does not capture the yarn well.

[0025] In this invention, the preferred configuration is as follows: The invention comprises multiple spinning units and a work carriage. The work carriage moves relative to the multiple spinning units. Each spinning unit includes a spinning device, a yarn storage device, and a take-up device. A fixed capture device is provided in each spinning unit. A movable capture device is provided on the work carriage.

[0026] Therefore, when a fixed capture device is used, there is no need to move the work trolley relative to the designated spinning unit. Compared to movable capture devices, fixed capture devices are used more frequently. Therefore, yarn capture on the package side can be performed efficiently.

[0027] Preferably, a yarn detection device is provided that detects the state of the yarn on the upstream side of the yarn travel direction, which is closer to the yarn storage device. In the case where the spinning of the spinning device is interrupted due to the main reason for the interruption of spinning, and the spinning of the spinning device is interrupted based on the detection result of the yarn detection device, a fixed capture device is used.

[0028] Therefore, fixed capture devices can be used effectively.

[0029] The present invention preferably has the following configuration: When spinning begins, if spinning is interrupted due to a detection result from the yarn detection device and the fixed capture device fails to capture the yarn on the package side, a movable capture device is used. Alternatively, when spinning is interrupted primarily due to a failure of the splicing device located downstream of the yarn storage device in the yarn travel direction, or due to a power outage or momentary power failure, a movable capture device is used when spinning resumes subsequently.

[0030] Therefore, movable capture devices can be used effectively.

[0031] In this invention, the following configuration is preferred. That is, when spinning of the spinning device is interrupted due to a power outage or momentary power outage and stops while the yarn is connected between the yarn storage device and the package, when the spinning device resumes spinning after power is restored, the yarn on the package side is wound up by the take-up device, the yarn remaining on the yarn storage roller of the yarn storage device is unwound from the yarn storage roller of the yarn storage device, and the captured portion is captured by the fixed capture device.

[0032] This allows for more effective use of fixed capture devices.

[0033] Preferably, as the main cause of spinning interruption of the spinning device, in the event of spinning interruption of the spinning device due to power failure or momentary power failure, the take-up width of the package is narrowed, and when the spinning device resumes spinning after power is restored, a movable capture device is used to capture the capture portion.

[0034] This allows for more effective use of movable capture devices.

[0035] In this invention, the preferred configuration is as follows: The invention includes a splicing device. This splicing device is used to splice the yarn on the spinning device side and the yarn on the package side when a yarn breakage occurs between the spinning device and the package device. The movable capture device moves to a retracted position while capturing the capture portion, thereby guiding the yarn on the package side toward the splicing device.

[0036] The splicing device splices the yarn on the package side, which is captured by a fixed or movable capture device, with the yarn on the spinning device side. The fixed or movable capture device that captures the yarn after it breaks between the spinning device and the take-up device is the same as the fixed or movable capture device that guides the yarn on the package side toward the splicing device.

[0037] This allows for smooth connection of the connector device.

[0038] Preferably, it is a yarn capture detection sensor that detects whether the fixed capture device has successfully captured the yarn on the package side.

[0039] Therefore, it is possible to automatically switch from using a fixed capture device to using a movable capture device, depending on the situation.

[0040] Preferably, the fixed capture device is configured to capture the capture portion by attracting the yarn on the package side. The fixed capture device has a changing part that changes the fixed capture device to an attracting state and an attracting stop state. During the period when the yarn is wound in a continuous state between the spinning device and the winding device, the changing part makes the fixed capture device into an attracting stop state.

[0041] Therefore, by stopping the suction during periods when a fixed capture device is not required, energy savings can be achieved in the spinning machine.

[0042] Preferably, the device includes a yarn detection device that detects the state of the yarn on the upstream side of the yarn storage device in the yarn travel direction. As the main cause of the spinning interruption, if the spinning of the spinning device is interrupted based on the detection result of the yarn detection device, the change unit changes the fixed capture device from the suction stop state to the suction state at a time delay before the spinning interruption and at a time when there is yarn remaining in the yarn storage roller of the yarn storage device.

[0043] Therefore, the yarn on the package side can be reliably captured by the fixed capture device.

[0044] According to the second invention, a spinning machine with the following configuration is provided. Specifically, the second invention includes multiple spinning units, a work carriage, and a splicing device. The work carriage moves relative to the multiple spinning units. Each spinning unit includes a spinning device, a take-up device, and a yarn storage device. The spinning device generates yarn by spinning a fiber bundle and supplies the yarn. The take-up device takes the yarn supplied from the spinning device to form a package. The yarn storage device is positioned midway along the yarn travel path formed between the spinning device and the take-up device. When a yarn breakage occurs between the spinning device and the take-up device, the splicing device splices the yarn on the spinning device side and the yarn on the package side. Each spinning unit has a fixed capture device. The fixed capture device captures the yarn on the package side, i.e., the capture portion. The fixed capture device is provided between the yarn storage device and the take-up device, and is positioned upstream of the splicing device in the yarn travel direction. The work carriage has a movable capture device. The movable capture device moves between an approach position close to the take-up device and a retracted position further away from the take-up device. At the approach position, the movable capture device captures the capture portion, and then moves from the approach position to the retracted position after capturing the capture portion. The retracted position is a position further away from the take-up device than the splicing device. The splicing device splices the yarn on the package side, captured by either the fixed or movable capture device, with the yarn on the spinning device side.

[0045] Therefore, when yarn breakage occurs, it is possible to appropriately distinguish between using a movable capture device and a fixed capture device for splicing. Thus, splicing can be performed appropriately using either a movable or fixed capture device. As a result, the success rate of yarn capture on the package side of the spinning machine as a whole can be improved, and the time required to prepare to begin taking in yarn can be shortened.

[0046] Preferably, when spinning resumes after the spinning of the spinning device has been interrupted, it is possible to switch between a connector using a fixed capture device and a connector using a movable capture device. When using a fixed capture device, after the spinning of the spinning device has been interrupted, the take-up device takes up the yarn on the take-up side so that the yarn on the take-up side is located in an area that can be captured by the fixed capture device. When using a movable capture device, the work carriage is controlled so that it is positioned at a position corresponding to the spinning unit where the yarn breakage occurred.

[0047] Therefore, it is possible to reliably capture the yarn on the package side using a movable or fixed capture device. Attached Figure Description

[0048] Figure 1 This is a front view showing the overall configuration of a spinning machine according to one embodiment of the present invention.

[0049] Figure 2 This is a side view of the spinning unit of a spinning machine.

[0050] Figure 3 This is a side view showing the state of the spinning unit where the yarn breaks and the splicing trolley travels to that spinning unit.

[0051] Figure 4 This is a side view showing the situation where the snap-fit ​​joint is fixed at the start of spinning.

[0052] Figure 5 This is a side view showing the situation where the moving capture joint is being used at the start of spinning. Detailed Implementation

[0053] A spinning 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 of the direction of travel (yarn travel direction) of the yarn 33, sliver 35 or fiber bundle 37 when the yarn 33 is wound up.

[0054] like Figure 1 As shown, the spinning machine 1 includes a blower box 3, a power box 5, multiple spinning units 7, and a splicing trolley (work trolley) 9. The multiple spinning units 7 are arranged in a predetermined direction. Each spinning unit 7 (spinning machine 1) spins yarn using the spinning device 23, etc., described later. In this embodiment, the spinning machine 1 is configured as an air-jet spinning machine.

[0055] A blower 11, which acts as a negative pressure source, is installed inside the blower box 3.

[0056] The power unit 5 is equipped with a drive source (not shown), a central control unit 13, a display unit 15, and an operation unit 17. The drive source provided in the power unit 5 includes an electric motor that is commonly used by multiple spinning units 7.

[0057] A central control unit 13 (an example of a control unit) centrally manages and controls all parts of the spinning machine 1. The central control unit 13 communicates with each spinning unit 7 via signal lines (not shown in the diagram) as follows: Figure 2 The unit control unit 19 (an example of a control device) is connected. In this embodiment, each spinning unit 7 has a unit control unit 19, but a fixed number (e.g., 2 or 4) of spinning units 7 may share a single unit control unit 19.

[0058] The display unit 15 can display settings for the spinning units 7 and / or information related to the status of each spinning unit 7. The operator operates the operation unit 17 to set up the spinning machine 1 and / or select information displayed on the display unit 15. The display unit 15 and the operation unit 17 may also be configured as a touch panel display.

[0059] like Figure 2 As shown, each spinning unit 7 includes a drafting device 21, a spinning device 23, a yarn storage device 25, a suction device (fixed capture device) 29, and a take-up device 31. These devices are arranged sequentially from the upstream side to the downstream side in the direction of travel of the yarn 33, etc. The drafting device 21 and the spinning device 23 constitute the yarn supply device in the spinning unit 7.

[0060] The splicing carriage 9 is movable relative to each spinning unit 7. One splicing carriage 9 is provided for multiple spinning units 7. Figure 1 The diagram shows one splicing carriage 9, but the spinning machine 1 may also have multiple splicing carriages 9. As described later, the splicing carriage 9 includes a splicing device 105, a suction tube 107, and a suction nozzle (movable capture device) 109.

[0061] The drafting device 21 is located at the top of the spinning unit 7 (spinning machine 1). The drafting device 21 has multiple pairs of drafting rollers. Each pair of drafting rollers consists of two drafting rollers.

[0062] Specifically, the drafting device 21 has four drafting roll pairs. The four drafting roll pairs are arranged sequentially from the upstream side to the downstream side: a rear roll pair 41, a third roll pair 43, an intermediate roll pair 45, and a front roll pair 47. A belt 49 is provided on each drafting roll of the intermediate roll pair 45.

[0063] Each of the four drafting roll pairs has a drive roll and a driven roll that are positioned opposite each other. For each of the four drafting roll pairs, a drive source, such as a motor (not shown), is provided on each drive roll. Each drive roll is driven to rotate about its own axis by the drive source. The driven roll of each drafting roll pair is configured to rotate about its own axis via a bearing (not shown).

[0064] The drafting device 21 stretches (drafts) the yarn 35 supplied from the yarn supply unit 97 into a predetermined amount of fiber (or thickness) by clamping the yarn 35 between each pair of drafting rollers (between the drive roller and the driven roller) and generating a fiber bundle 37. The fiber bundle 37 generated by the drafting device 21 is supplied to the spinning device 23.

[0065] The yarn supply unit 97 is located upstream of the drafting device 21. A container, or box, for holding the yarn 35 is provided in the yarn supply unit 97. The unit control unit 19 can calculate the yarn balance in the box based on the settings of the drafting device 21. Alternatively, the central control unit 13 can calculate the yarn balance in the box instead of the unit control unit 19. Furthermore, the calculation of the yarn balance in the box can be omitted.

[0066] A yarn sensor 99 is provided between the drafting device 21 and the yarn supply unit 97 to detect the presence or absence of the yarn 35. The yarn sensor 99 can detect the presence of the yarn 35 supplied to the drafting device 21. However, the yarn sensor 99 is not necessarily required.

[0067] In this embodiment, the spinning device 23 is configured as an air spinning device. The spinning device 23 applies a twisting airflow to the fiber bundle 37 (stretched yarn 35) generated by the drafting device 21, thereby twisting it to generate fine yarn 33. The spinning device 23 is located downstream of the drafting device 21.

[0068] In spinning unit 7 (spinning machine 1), a yarn supply device consisting of drafting device 21 and spinning device 23 supplies fine yarn 33. The fine yarn 33 generated by the yarn supply device travels from the yarn supply device toward the take-up device 31 and is taken up by the take-up device 31. A yarn channel (yarn travel path) for the fine yarn 33 is formed between the yarn supply device and the take-up device 31.

[0069] The yarn storage device 25 pulls out and temporarily stores the yarn 33 generated by the spinning device 23. The yarn storage device 25 is disposed midway in the yarn channel formed between the yarn supply device and the take-up device 31. Specifically, the yarn storage device 25 is disposed downstream of the spinning device 23.

[0070] The yarn storage device 25 includes a yarn storage roller 53, an electric motor 55, a yarn hanging component 57, a yarn guide 59, and a yarn storage quantity detection sensor 61.

[0071] The yarn accumulation roller 53 is driven to rotate by an electric motor 55. The yarn accumulation roller 53 temporarily accumulates yarn 33 by winding it around its outer circumference. The yarn accumulation roller 53 rotates at a predetermined speed while the yarn 33 is wound around its outer circumference, thereby allowing the yarn 33 to be pulled out from the spinning device 23 at a predetermined speed.

[0072] The yarn-hanging component 57 is capable of hooking the yarn 33. By rotating integrally with the yarn accumulation roller 53 while the yarn 33 is hooked, the yarn-hanging component 57 can guide the yarn 33 toward the outer peripheral surface of the yarn accumulation roller 53.

[0073] The yarn guide 59 is located downstream of the yarn accumulation roller 53. The yarn guide 59 restricts the track of the yarn 33 that is traversed by the rotating yarn hanging member 57, thereby stabilizing the yarn path of the yarn 33 that is downstream of the yarn guide 59 (on the take-up device 31 side) and guiding the yarn 33.

[0074] The yarn quantity detection sensor 61 can detect the yarn quantity of the yarn accumulation roller 53. The yarn quantity detection sensor 61 is configured to face an appropriate position on the outer peripheral surface of the yarn accumulation roller 53. The yarn quantity detection sensor 61 detects whether there is yarn 33 at that position. The yarn quantity detection sensor 61 sends the detected signal to the unit control unit 19. Based on the detection signal, the unit control unit 19 can determine whether the yarn quantity is above a predetermined amount.

[0075] The yarn storage device 25 can temporarily store the yarn 33 on the outer circumferential surface of the yarn storage roller 53, thus acting as a buffer for the yarn 33. As a result, it is possible to eliminate adverse conditions (e.g., loosening of the yarn 33) caused by the spinning speed of the spinning device 23 and the take-up speed (the travel speed of the yarn 33 taken up by the package 93 described later) becoming inconsistent for some reason.

[0076] A yarn monitoring device (detection device, yarn detection device) 63 and a spinning sensor 69 (yarn detection device) are provided between the spinning device 23 and the yarn storage device 25. The yarn monitoring device 63 and the spinning sensor 69 detect the state of the yarn 33 upstream of the yarn storage device 25 (the yarn supply device side). The yarn 33 generated by the spinning device 23 passes through the yarn monitoring device 63 and the spinning sensor 69 before being stored in the yarn storage device 25.

[0077] The yarn monitoring device 63 monitors the quality of the traveling yarn 33 using a light sensor and detects yarn defects contained in the yarn 33. Yarn defects include, for example, abnormalities in the thickness of the yarn 33 and / or foreign matter contained in the yarn 33. When a yarn defect is detected in the yarn 33, the yarn monitoring device 63 sends a yarn defect detection signal to the unit control unit 19. Alternatively, the yarn monitoring device 63 may use, for example, an electrostatic capacitive sensor to monitor the quality of the yarn 33 instead of a light sensor.

[0078] The spinning sensor 69 is disposed immediately downstream of the yarn monitoring device 63. The spinning sensor 69 detects the tension of the yarn 33 between the spinning device 23 and the yarn storage device 25. The spinning sensor 69 sends the detected tension detection signal to the unit control unit 19. By monitoring the tension detected by the spinning sensor 69, the unit control unit 19 can detect abnormal areas such as weak yarn. Alternatively, the spinning sensor 69 can be omitted.

[0079] To maintain yarn quality, it is preferable to remove yarn defects and abnormal parts. The unit control unit 19 determines whether to cut the yarn 33 based on the detection results of at least one of the yarn monitoring device 63 and the spinning sensor 69. The cutting of the yarn 33 is achieved by controlling the spinning of the spinning device 23 to stop by the unit control unit 19. Alternatively, the cutting of the yarn 33 can be achieved by stopping the drafting of the drafting device 21 (rotation of the rear roller pair 41). The spinning unit 7 can also be equipped with a cutter, and the unit control unit 19 can cut the yarn 33 using the cutter. When the yarn 33 is cut using the cutter, the unit control unit 19 also controls the spinning of the spinning device 23 in a manner that substantially interrupts the spinning process.

[0080] When the yarn 33 breaks, the suction device 29 can attract the yarn 33 on the package 93 side. The suction device 29 is disposed between the yarn storage device 25 and the take-up device 31. In this embodiment, the suction device 29 is fixedly disposed, but it can also be configured to be slightly movable. For example, the suction device 29 can also be configured to slightly contact or separate from the yarn channel. In other words, the suction device 29 is configured not to move like the suction nozzle 109. When the splicing carriage 9, described later, operates on the spinning unit 7, the suction device 29 is located upstream of the splicing device 105 provided on the splicing carriage 9. When the yarn 33 breaks between the spinning device 23 and the take-up device 31, the suction device 29 can capture the yarn 33 on the take-up device 31 side (package 93 side).

[0081] The splicing device 105 includes a yarn-pulling lever (not shown). By actuating the yarn-pulling lever, the yarn 33 captured by the suction device 29 is drawn into the splicing device 105. The splicing carriage 9 also includes a suction nozzle 109. When the yarn 33 on the package 93 side is not captured by the suction device 29, the suction nozzle 109 captures the yarn 33 in place of the suction device 29. The configuration of the splicing carriage 9 will be described later. Furthermore, in order to bring the yarn 33 closer to the splicing device 105, the splicing device 105 may also be configured to be able to contact or separate relative to the yarn channel.

[0082] In the event of a breakage of the yarn 33, the unit control unit 19 determines whether to use or not use the suction device 29, and appropriately controls the suction device 29 based on this determination. The suction device 29 and the suction nozzle 109 are selectively used to capture the yarn 33 on the package 93 side. Therefore, using the suction device 29 means not using the suction nozzle 109, and not using the suction device 29 means using the suction nozzle 109. Furthermore, the non-use of the suction device 29 also includes cases where the yarn 33 capture fails even though the suction device 29 is used.

[0083] The decision to use or not use the suction device 29 is made taking into account at least one of the following: the reason for the yarn 33 breaking (the main reason for spinning interruption) and the state of the spinning machine 1 at the start of spinning. The start of spinning includes, for example, the initial start of spinning immediately after shipment from the factory, and the restart after a spinning interruption.

[0084] When the unit control unit 19 determines the use of the suction device 29, the suction device 29 is controlled by the unit control unit 19 to attract and capture the yarn 33 on the package 93 side downstream of the yarn storage device 25 (yarn guide 59). The timing at which the suction device 29 applies the suction airflow to the yarn 33 is a predetermined timing that occurs after the yarn 33 has broken and before the yarn end of the yarn 33 on the package 93 side has passed through the suction device 29.

[0085] The suction device 29 includes a suction tube 71. A suction port 73 is formed at the front end (long side end) of the suction tube 71. The suction port 73 opens towards the middle of the yarn passage formed in the spinning unit 7. The suction tube 71 is connected to a negative pressure source such as a blower 11 via piping. This allows a suction airflow to be generated within the suction port 73 (inside the suction tube 71). Unlike the suction nozzle 109 described later, the suction tube 71 is fixedly installed in the spinning unit 7. Therefore, the position of the suction port 73 is constant.

[0086] In this embodiment, a gate (changing unit) 77 is provided in the suction device 29. The state of the suction device 29 is changed to a suction state and a suction stop state by the gate 77. The gate 77 is, for example, disposed between the suction port 73 and a portion of the suction device 29 downstream of the suction port 73 in the direction of airflow. The gate 77 is, for example, constructed by an opening and closing mechanism having a plate-shaped member. The gate 77 can be opened and closed by the control of the unit control unit 19. Furthermore, the gate 77 can be omitted from the suction device 29.

[0087] When spinning is proceeding normally without any breakage of the yarn 33, the suction device 29 does not need to operate. Normal spinning refers to the situation where the yarn 33 is being supplied by the yarn supply device (drafting device 21 and spinning device 23) and is being wound by the take-up device 31. In this case, the gate 77 is closed by the unit control unit 19, and the suction device 29 is in a suction-stopped state. Therefore, energy saving of the spinning machine 1 can be achieved.

[0088] In the event of a break in the yarn 33 causing spinning interruption, the unit control unit 19 opens the gate 77 when it decides to use the suction device 29. Considering the case where the yarn 33 breaks at a point on the spinning device 23 due to spinning stoppage, the timing of the gate 77 opening is delayed compared to the timing of the spinning interruption, and at a time when yarn 33 remains on the yarn accumulation roller 53 of the yarn accumulation device 25. At this timing, the state of the suction device 29 changes from a suction stop state to a suction state, thus enabling the suction device 29 to capture the yarn 33 on the package 93 side. Furthermore, the timing of the gate 77 opening can be arbitrarily changed, but it can be determined, for example, based on the detection signal from the yarn accumulation detection sensor 61.

[0089] A yarn capture detection sensor 79 is provided in the suction device 29. In this embodiment, the yarn capture detection sensor 79 is disposed immediately downstream of the suction device 29. The yarn capture detection sensor 79 can detect whether the suction device 29 has successfully captured the yarn 33 on the package 93 side. The yarn capture detection sensor 79 detects whether there is yarn 33 immediately downstream of the suction device 29 and sends a detection signal to the unit control unit 19. Based on the detection signal from the yarn capture detection sensor 79, the unit control unit 19 can detect whether the capture by the suction device 29 has been successful.

[0090] like Figure 1 As shown, each spinning unit 7 has a setting unit 121 for its suction device 29. The setting unit 121 is used to prevent the suction device 29 from capturing the yarn 33 on the package 93 side. The setting unit 121 sends an prevention signal to the unit control unit 19 when it is operated. Upon receiving the prevention signal, the unit control unit 19 controls the gate 77 to keep the suction device 29 in a suction-stopped state. Furthermore, the setting unit 121 can be configured as, for example, an emergency stop button, a hardware key, or a touch panel, and its configuration is not particularly limited.

[0091] For example, the setting unit 121 is operated when the take-up of the yarn 33 in the spinning unit 7 is stopped urgently, or when maintenance is performed on the various devices of the spinning unit 7. In this embodiment, the setting unit 121 is configured to operate the suction devices 29 in each spinning unit 7 independently, but it can also be configured to operate a predetermined number (e.g., 2 or 4) or all of the suction devices 29 in the spinning units 7 simultaneously. The setting unit 121 may also be provided on a separate unit panel corresponding to each spinning unit 7, instead of in the power box 5. Alternatively, the setting unit 121 may be omitted.

[0092] The take-up device 31 takes up the yarn 33 passing through the yarn storage device 25 to form a package 93. The take-up device 31 is located downstream of the yarn storage device 25.

[0093] The take-up device 31 includes a rocker arm 81, a take-up roller 83, and a traverse yarn guide 85.

[0094] The rocker arm 81 is supported so as to be able to swing about the support shaft 87 and to support the bobbin 91 (and thus the package 93) for taking up the yarn 33 so as to be able to rotate. The take-up roller 83 rotates in contact with the outer circumferential surface of the bobbin 91 or the package 93, thereby driving the package 93 to rotate in the take-up direction. The take-up device 31 reciprocates the traverse guide 85 by a drive mechanism (not shown) and drives the take-up roller 83 by an electric motor (not shown). Thus, the take-up device 31 can take up the yarn 33 into the package 93 while traversing the yarn 33.

[0095] In this embodiment, a waxing device 65 and a yarn travel sensor 67 are provided between the suction device 29 and the winding device 31. The yarn 33 that has passed through the yarn storage device 25 passes through the waxing device 65 before being wound into the package 93 by the winding device 31, and passes near the yarn travel sensor 67.

[0096] The waxing device 65 is capable of maintaining the wax applied to the yarn 33. The waxing device 65 is capable of waxing the yarn 33 that travels between the yarn storage device 25 and the take-up device 31.

[0097] The yarn travel sensor 67 is disposed near the downstream side of the waxing device 65. The yarn travel sensor 67 can detect whether the yarn 33 is traveling at a predetermined position in the yarn channel. In other words, the yarn travel sensor 67 can detect the presence or absence of the yarn 33. The yarn travel sensor 67 sends a detection signal to the unit control unit 19.

[0098] like Figure 1 As shown, a track 101 is provided in the spinning machine 1. The track 101 is configured to extend along the direction in which the plurality of spinning units 7 are arranged. The splicing carriage 9 is configured to travel on the track 101. Thus, the splicing carriage 9 can move relative to the plurality of spinning units 7.

[0099] The splicing carriage 9 travels to the working position corresponding to the spinning unit 7 where the yarn 33 has been broken, and performs splicing processing in the spinning unit 7. The splicing carriage 9 performs the splicing processing in cooperation with the suction device 29 or the like provided by the spinning unit 7, or by using the device provided by the splicing carriage 9 (such as the suction nozzle 109 described later).

[0100] The jointing trolley 9 includes traveling wheels 103, a jointing device 105, a suction pipe 107, and a suction nozzle 109. Furthermore, the jointing trolley 9 also includes... Figure 2 The trolley control unit 111 shown is an example of a control device.

[0101] The traveling wheels 103 are configured to be driven to rotate via a drive mechanism (not shown). Driven by the traveling wheels 103, the joint carriage 9 can travel relative to the multiple spinning units 7 respectively.

[0102] The straw 107 is a component with a tubular portion. An opening is formed at the front end of the straw 107. The straw 107 is connected to a negative pressure source such as a blower 11. Therefore, a suction airflow can be generated at the front end of the straw 107. The straw 107 is supported so that it can rotate. By rotating the straw 107, its front end can be brought closer to or retracted relative to the spinning device 23. In the event of a break in the yarn 33, the straw 107 can suck in and capture the yarn 33 on the side of the spinning device 23.

[0103] The suction nozzle 109 is a component with a tubular portion. An opening is formed at the front end 117 of the suction nozzle 109. The suction nozzle 109 is connected to a negative pressure source such as a blower 11. Therefore, the front end 117 of the suction nozzle 109 can generate a suction airflow. The suction nozzle 109 is supported so that it can rotate. By rotating the suction nozzle 109, its front end 117 can be moved to a position close to (approaching position) or a position away from (retracting position) relative to the take-up device 31. In the event of a breakage of the yarn 33, the suction nozzle 109 can suck in and capture the yarn 33 from the take-up device 31 side (wrap 93 side) from the front end 117 at the approaching position. The retracting position is a position away from the take-up device than the approaching position. Furthermore, the retracting position is a position upstream of the splicing device on the yarn travel path.

[0104] The suction tube 107 is rotated to one side, causing its tip to move closer to the spinning device 23, and capturing the end of the yarn 33 while close to the spinning device 23. Then, the suction tube 107 is rotated to the other side, causing its tip to move away from the spinning device 23. Figure 4 as well as Figure 5 As shown by the solid line, when the suction tube 107 is retracted from the spinning device 23, the yarn 33 captured between the yarn end and the spinning device 23 has a portion located downstream of the splicing device 105.

[0105] The suction nozzle 109 rotates to one side, causing its tip 117 to move towards the take-up device 31 and capture the yarn 33 near the take-up device 31. Then, the suction nozzle 109 rotates to the other side, causing its tip 117 to move away from the take-up device 31. Figure 5 As shown by the solid line, at the position where the suction nozzle 109 retracts from the winding device 31, the yarn 33 captured between the yarn end and the package 93 has a portion located upstream of the splicing device 105.

[0106] After the yarn 33 is broken, the splicing device 105 splices the yarn 33 on the spinning device 23 side captured by the suction tube 107 with the yarn 33 on the package 93 side captured by the suction device 29 or the suction nozzle 109. In this embodiment, the splicing device 105 is a splicing device that uses a twisting airflow to twist the yarn ends together. The splicing device 105 is not limited to a splicing device; for example, a mechanical knotter can also be used.

[0107] In this embodiment, the yarn end of the yarn 33 on the package 93 side is attracted by the suction device 29 or the suction nozzle 109. However, it is not necessary to attract only the yarn end of the yarn 33. As a result, the yarn end of the yarn 33 on the package 93 side may also be attracted if the yarn end is attracted closer to the package 93 side than the yarn end. Therefore, a specific portion of the yarn 33 on the package 93 side captured by the suction device 29 or the suction nozzle 109 is considered as the captured portion.

[0108] When the splicing trolley 9 is traveling towards and stopping the spinning unit 7 that produces the broken yarn 33, the splicing device 105 is located downstream of the suction device 29. Furthermore, in the state where the tip 117 of the suction nozzle 109 is retracted relative to the take-up device 31 ( Figure 5 In the solid line state, the connector device 105 is located downstream of the front end 117 of the suction nozzle 109.

[0109] The trolley control unit 111 is configured as a known computer having a CPU, ROM, RAM, etc. (not shown). The trolley control unit 111 controls the jointing process performed by the jointing trolley 9 by controlling the operation of each component of the jointing trolley 9.

[0110] The splicing carriage 9 is typically stationary at a suitable position on track 101. When a break in the yarn 33 occurs in a spinning unit 7, the splicing carriage 9 moves toward that spinning unit 7. When in standby mode, the splicing carriage 9 does not generate suction airflow in either the suction tube 107 or the suction nozzle 109. Therefore, air consumption associated with both the suction tube 107 and the suction nozzle 109 can be reduced.

[0111] Next, the distinct use of the suction device 29 and the suction nozzle 109 during splicing in the spinning unit 7 will be explained.

[0112] After the yarn 33 is disconnected between the yarn supply device (spinning device 23 and / or drafting device 21) and the package 93, splicing is performed near the timing when the spinning device 23 restarts the interrupted spinning.

[0113] In this embodiment, there are two actions for joint processing, and one of them must be selected.

[0114] The first action is, for example Figure 4 As shown, the yarn 33 on the winding device 31 side is captured by the suction device 29, and the splicing device 105 is able to take in the yarn 33 and splice it. Hereinafter, this operation will sometimes be referred to as "fixed capture splicing".

[0115] The second action is, for example Figure 5 As shown, the nozzle 109 captures the yarn 33 on the side of the take-up device 31, and guides the yarn 33 so that the splicing device 105 can pick up the yarn 33 and splice it. Hereinafter, this action will sometimes be referred to as "moving capture splicing".

[0116] In any action, the fine yarn 33 on the side of the spinning device 23 is captured by the suction tube 107, and the fine yarn 33 is guided by the suction tube 107 so that the splicing device 105 can pick up the fine yarn 33.

[0117] Before interrupting spinning, the unit control unit 19 determines whether to use a fixed or movable capture joint based on the primary cause of the spinning interruption. If time has elapsed since the previous spinning interruption, the unit control unit 19 determines whether to use a fixed or movable capture joint when spinning resumes, based on the primary cause of the spinning interruption or the initial state of spinning. The decision to use a fixed capture joint can be termed the decision to use the suction device 29. The decision to use a movable capture joint can be termed the decision to use the suction nozzle 109.

[0118] The main reasons for the interruption of spinning are varied, and can be listed as follows: [A] the yarn 33 is cut, for example, to remove yarn defects, based on the detection results of the yarn monitoring device 63 and / or the spinning sensor 69; [B] the yarn 33 is broken (tension breakage) when a high tension is applied to the yarn 33 during take-up; [C] the splicing process of the splicing device 105 fails; [D] the spinning unit 7 stops spinning due to a power outage or momentary power outage; [E] the yarn balance calculated by the unit control unit 19 is lower than the specified amount; [F] the yarn sensor 99 detects no yarn; [G] the yarn monitoring device 63 detects no yarn 33; and [H] the yarn travel sensor 67 detects no yarn 33.

[0119] As for the state at the start of spinning, examples can be listed as: [I] the state in which the yarn end of the yarn 33 on the package 93 side is wound around the package 93, or [J] the state in which spinning of multiple spinning units 7 starts at the same time.

[0120] The state of [I] can be detected by the unit control unit 19 using the yarn travel sensor 67, etc. The state of [J] can be detected by the unit control unit 19 based on the situation where spinning is interrupted by a power outage or a momentary power outage in multiple spinning units 7, or when the operating device such as the simultaneous start button set for multiple spinning units 7 is operated.

[0121] The unit control unit 19 determines that when it is determined that the yarn supply of the spinning device 23 needs to be interrupted, specifically, when the main reason for the yarn interruption is the above-mentioned [A], it decides to fix the capture joint.

[0122] Furthermore, the main causes of spinning interruption include the detection of no yarn / no thread as shown in [E], [F], and [G]. In cases where spinning is interrupted due to such main causes, the yarn 33 will break upstream of the yarn accumulation device 25 (yarn accumulation roller 53). In this situation, the unit control unit 19 considers whether the suction device 29 can capture the yarn 33 on the package 93 side in time, and determines whether to use a fixed capture joint or a movable capture joint.

[0123] In this determination, the result of detecting whether the yarn accumulation amount of the yarn accumulation roller 53 is above a specified amount is used by the yarn accumulation amount detection sensor 61.

[0124] The following is a detailed description. In the spinning machine 1 of this embodiment, when the yarn 33 breaks, the take-up device 31 immediately stops taking up the yarn 33. Assuming that the take-up device 31 continues to take up the yarn after the break, the yarn end of the yarn 33 will be taken up in the rotating package 93 in the take-up device 31 after passing through the yarn accumulation roller 53.

[0125] Even if the winding device 31 stops winding immediately after the breakage of the yarn 33, a certain length of yarn 33 will still be wound into the package 93 until the high-speed rotating package 93 completely stops rotating.

[0126] When the yarn accumulation amount on the yarn accumulation roller 53 is above a predetermined amount, the suction device 29 can still capture the yarn 33 even after the stop control has finished and before the package 93 has actually stopped, provided that the yarn 33 has been pulled out from the yarn accumulation roller 53. In other words, the suction device 29 can capture the yarn 33 in time when there is only a small amount of yarn 33 remaining on the yarn accumulation roller 53. In this case, the unit control unit 19 decides to perform a fixed capture joint.

[0127] If the yarn accumulation amount on the yarn accumulation roller 53 is less than the specified amount, the suction device 29 cannot capture the yarn 33 in time, and the package 93 will wind up the yarn end onto the package 93 by rotating before it actually stops. In this case, the unit control unit 19 decides to move the capture joint.

[0128] Among the main causes of spinning interruption, there are various main causes as exemplified in [A] to [H] above, but cause [A] occurs most frequently. In case of [A], the unit control unit 19 decides to fix the capture joint. Therefore, in this embodiment, there is a tendency for the frequency of use of the suction nozzle 109 to decrease while the frequency of use of the suction device 29 increases.

[0129] Therefore, in the spinning machine 1 of this embodiment, the suction device 29 is provided on the spinning unit 7, and the suction nozzle 109 is provided on the splicing carriage 9. That is, the suction device 29 is provided for each spinning unit 7, and the suction nozzle 109 is provided to be shared by multiple spinning units 7. As a result, the overall efficiency of the spinning machine 1 is good.

[0130] Furthermore, if the main cause of the spinning interruption is one of the above-mentioned [B], [C], [D] or [H], or if the state at the start of spinning is [I] or [J], the unit control unit 19 decides to move the capture connector.

[0131] Sometimes, even after attempting to fix the capture connector, the suction device 29 cannot capture the yarn 33 on the package 93 side. The yarn capture detection sensor 79 can detect this failure. In the event of the suction device 29 failing to capture the yarn 33, the unit control unit 19 decides to switch to moving the capture connector. Before using the suction nozzle 109, the take-up device 31 further takes up the yarn 33 on the package 93 side. As a result, the yarn end that failed to be captured by the suction device 29 moves to the vicinity or outer peripheral surface of the package 93, thus enabling the suction nozzle 109 to reliably capture the yarn 33 on the package 93 side.

[0132] When spinning in spinning unit 7 is interrupted due to [D], unit control unit 19 rotates package 93 via take-up device 31, forming a strip winding on package 93. The strip winding is a portion formed by continuously taking the yarn 33 at a predetermined position in the winding width direction of package 93, or by continuously taking it only with a predetermined reduction width. By limiting the traverse range of traverse guide 85 to a predetermined position range or a predetermined reduction width range in the winding width direction for a predetermined period before the take-up of package 93 is interrupted, a strip winding is formed on the surface of package 93. Then, unit control unit 19 controls the operation by moving the capture joint when power is restored.

[0133] Furthermore, when it is decided to perform a moving capture joint, the traverse range of the traverse guide 85 may be limited to a specified position range or a specified reduction width range in the winding width direction during a specified period, without being limited to the case where the spinning of the spinning unit 7 is interrupted due to the main reason of [D], in order to form a strip winding.

[0134] Furthermore, when spinning stops due to [D] as the primary cause, the unit control unit 19 can also be configured to attempt to fix the capture joint before moving it. That is, when spinning is interrupted due to a power outage or momentary power failure, the unit control unit 19 stops the spinning unit 7 while the yarn 33 is connected between the yarn accumulation roller 53 of the yarn accumulation device 25 and the package 93 of the take-up device 31. After power is restored, the unit control unit 19 rotates the package 93 via the take-up device 31, causing the remaining yarn 33 on the yarn accumulation roller 53 of the yarn accumulation device 25 to unwind, and the suction device 29 captures the yarn 33 on the package 93 side. Then, the splicing device 105 splices the yarn.

[0135] Next, the explanation is in Figure 2 In this state, the yarn 33 breaks, causing the spinning to stop, and the splicing device 105 performs splicing operations on each part. Hereinafter, we will take the case where the main cause of the spinning interruption is [A], specifically the case where the yarn 33 is cut based on the detection result of the yarn monitoring device 63 as an example.

[0136] First, based on the yarn defect detection signal input from the yarn monitoring device 63, the unit control unit 19 stops the yarn feeding of the yarn feeding device (spinning device 23 and / or drafting device 21). At this time, the unit control unit 19 also stops the take-up device 31. By stopping the yarn feeding of the yarn feeding device, the yarn 33 is cut. Thus, as... Figure 3 As shown, the yarn 33 breaks.

[0137] Furthermore, at an appropriate timing after the yarn monitoring device 63 detects a yarn defect, the unit control unit 19 sends a splicing request signal to the trolley control unit 111. Upon receiving the splicing request signal, the trolley control unit 111 stops the splicing trolley 9 after it has traveled to the spinning unit 7 where the yarn 33 has broken. Figure 3 The text indicates the situation where the splicing trolley 9 arrives at the spinning unit 7 immediately after the disconnection occurs, but the timing of arrival can sometimes be different. Figure 3 The timing delay.

[0138] At an appropriate time after the yarn monitoring device 63 detects a yarn defect, or at an appropriate time after the yarn 33 breaks, the unit control unit 19 determines whether to use the suction device 29 or the suction nozzle 109 for splicing. In this example, spinning is interrupted due to the main reason [A], so the unit control unit 19 decides to perform a fixed capture splice. In other words, the unit control unit 19 decides to use the suction device 29.

[0139] After the yarn 33 breaks, the take-up device 31 stops rotating for a short time. Therefore, with the take-up device 31 completely stopped, the yarn 33 is connected between the yarn storage device 25 and the package 93. Then, the unit control unit 19 restarts the take-up device 31. As a result, the yarn 33 on the package 93 side is taken up by the take-up device 31 and packaged in the package 93.

[0140] Driven by the take-up device 31, the yarn 33 remaining on the yarn accumulation roller 53 of the yarn accumulation device 25 is pulled out, and the amount of yarn 33 accumulated on the yarn accumulation roller 53 decreases. The unit control unit 19 monitors the detection signal of the yarn accumulation detection sensor 61.

[0141] The unit control unit 19 opens the closed gate 77 at a timing slightly before the yarn 33 leaves the yarn storage device 25, causing the suction device 29 to begin suction. This timing can be, for example, set after a predetermined time has elapsed since the yarn storage level detection sensor 61 detected that the storage level of the yarn 33 has fallen below a predetermined amount.

[0142] Then, during the process of winding the yarn 33 on the package 93 side, when the yarn end of the yarn 33 is in an area that can be captured by the suction device 29, the unit control unit 19 stops the winding of the winding device 31 again. The stopping timing of the winding of the winding device 31 can be, for example, almost the same timing as when the yarn end of the yarn 33 remaining on the yarn accumulation roller 53 leaves the yarn accumulation roller 53 and exits the yarn guide 59. Alternatively, instead of stopping the winding, the unit control unit 19 can slow down the winding so that the yarn end of the yarn 33 is in a state that can be captured by the suction device 29. As a result, the yarn 33 can be sucked in and captured by the suction device 29 from the suction port 73.

[0143] At this time, the unit control unit 19 determines whether the attraction device 29 has successfully captured the yarn based on the detection result from the yarn capture detection sensor 79. The situation where the attraction device 29 is deemed to have failed to capture the yarn will be described later.

[0144] If the attraction device 29 is determined to have successfully captured the yarn, the unit control unit 19 determines whether the connector carriage 9 has reached the spinning unit 7. If it has not reached the spinning unit 7, it will remain in standby mode until it does.

[0145] With the splicing carriage 9 stopped at the working position corresponding to the spinning unit 7, the suction port 73 of the suction tube 71 is located upstream of the splicing device 105. Therefore, when the splicing carriage 9 arrives, the yarn 33 on the package 93 side held by the suction device 29 is facing the splicing device 105 of the splicing carriage 9.

[0146] After the connector trolley 9 is stopped, the trolley control unit 111 controls the connector trolley 9 to move the suction pipe 107 towards the... Figure 4 As shown by the dotted line, the position movement is such that the yarn 33 on the spinning device 23 side can be captured. Almost simultaneously, the unit control unit 19 causes the yarn supply device to resume supplying the yarn 33. Figure 4 As shown by the solid line, the trolley control unit 111 guides the yarn 33 captured by the suction tube 107 on the side of the spinning device 23 to the splicing device 105 below.

[0147] In this state, the unit control unit 19 activates the splicing device 105 to splice the yarn 33 from the take-up device 31 side, which is attracted by the suction device 29, with the yarn 33 from the spinning device 23 side. During this splicing, excess yarn 33 is cut off and discarded by the suction device 29 or the suction tube 107. Yarn 33 is continuously supplied from the yarn supply device during the splicing, but this yarn 33 is stored by the yarn storage device 25.

[0148] Almost simultaneously with the completion of the splicing, the take-up device 31 begins operation, restarting the winding of the package 93. The gate 77 closes at an appropriate time after the splicing is completed. Thus, the spinning unit 7 returns to its original position. Figure 2 The usual state.

[0149] Next, we will explain, for example, the case where spinning is interrupted due to the main reason [B], and the unit control unit 19 decides to move the capture connector.

[0150] When the yarn 33 breaks, if it is decided to move the capture joint, the unit control unit 19 controls the rotation of the take-up device 31 so that the yarn end of the yarn 33 on the package 93 side is taken up by the package 93. It is not necessary for the suction device 29 to capture the yarn end of the yarn 33 on the package 93 side, so the above-mentioned determination related to the yarn accumulation is not performed.

[0151] After the yarn 33 breaks, during the winding of the yarn 33 on the package 93 side by the winding device 31, the yarn end of the yarn 33 on the package 93 side passes near the suction port 73 of the suction device 29. In this embodiment, the gate 77 of the suction device 29 is closed, so the yarn end of the yarn 33 on the package 93 side is not sucked into the suction port 73 of the suction device 29. When the gate 77 is omitted in the suction device 29, the yarn end of the yarn 33 on the package 93 side may still be sucked into the suction port 73. However, even in this case, as the winding of the package 93 in the winding device 31 continues, the yarn end will be forcibly pulled out from the suction port 73.

[0152] Then, the unit control unit 19 determines whether the connector carriage 9 has arrived at the spinning unit 7, and if it has not arrived, it will standby until it arrives.

[0153] When the splicing carriage 9 reaches the working position for the spinning unit 7, the suction nozzle 109 approaches the take-up device 31. In this state, the package 93 is rotated in the opposite direction to the take-up direction by a suitable drive mechanism. As a result, the suction nozzle 109 can capture the yarn 33 on the package 93 side. Afterward, the suction nozzle 109 retracts from the take-up device 31. Consequently, the yarn 33 on the package 93 side is guided to the splicing device 105. Except for this, the operation of the splicing carriage 9 is the same as that of the fixed capture splice described above.

[0154] Next, we will explain, for example, the case where spinning is interrupted due to the main reason [A], and although the fixed capture joint is performed, it is determined that the suction device 29 has failed to capture the yarn 33.

[0155] If the yarn capture detection sensor 79 determines that the suction device 29 has failed to capture the yarn 33, the unit control unit 19 stops the fixed capture joint and decides to move the capture joint. The unit control unit 19 immediately restarts the take-up device 31, causing the package 93 to rotate in the take-up direction. As a result, the yarn end of the yarn 33 located near the suction device 29 can be taken into the package 93. As a result, the suction nozzle 109 is activated by the joint carriage 9 that has reached the spinning unit 7, thereby easily sucking in and capturing the yarn end of the yarn 33 on the package 93 side.

[0156] Furthermore, if the suction device 29 fails to capture the yarn 33, the yarn end of the yarn 33 is wound into the package 93, so the subsequent processing method can also be determined as state [I].

[0157] Next, an example will be given of how the unit control unit 19 determines whether to use a fixed capture connector or a movable capture connector based on the type of yarn.

[0158] The term "yarn type" refers to at least one of the following: the raw material of yarn 33 (the raw material of yarn 35), the count of yarn 33, and whether or not the yarn 33 contains a core yarn.

[0159] For example, the spinning machine 1 can also be configured such that, when the operation of the operation unit 17 is set to generate yarn 33 with a count coarser than a specified count, the suction nozzle 109 is always used to capture the yarn 33 on the package 93 side. That is, the spinning machine 1 can also be configured such that, when generating coarse yarn 33, the use of the suction device 29 is prohibited. This description is just one example. For example, the spinning machine 1 can also be configured conversely such that, when the operation of the operation unit 17 is set to generate yarn 33 with a count coarser than a specified count, the suction device 29 is always used to capture the yarn 33 on the package 93 side. That is, the spinning machine 1 can also be configured such that, when generating coarse yarn 33, the use of the suction nozzle 109 is prohibited.

[0160] For example, the spinning machine 1 can also be configured such that, when the operation of the operation unit 17 is set to generate yarn 33 containing core yarn, the suction nozzle 109 is always used to capture the yarn 33 on the package 93 side. That is, the spinning machine 1 can also be configured such that, when generating yarn 33 containing core yarn, the use of the suction device 29 is prohibited.

[0161] As in this embodiment, the capturing device that guides the yarn 33 on the package 93 side to the splicing device 105 changes depending on whether the suction device 29 or the suction nozzle 109 is used. That is, when the yarn 33 is captured by the suction device 29, the splicing device 105 splices the yarn 33 on the package 93 side captured by the suction device 29 with the yarn 33 on the spinning device 23 side captured by the suction nozzle 107. Furthermore, when the yarn 33 is captured by the suction nozzle 109, the splicing device 105 splices the yarn 33 on the package 93 side captured by the suction nozzle 109 with the yarn 33 on the spinning device 23 side captured by the suction nozzle 107.

[0162] As described above, the spinning machine 1 of this embodiment includes a spinning device 23, a take-up device 31, a yarn storage device 25, a suction device 29, and a suction nozzle 109. The spinning device 23 generates yarn 33 by spinning a fiber bundle 37 and can supply the yarn 33. The take-up device 31 takes the yarn 33 supplied from the spinning device 23 to form a package 93. The yarn storage device 25 is disposed midway in the yarn travel path formed between the spinning device 23 and the take-up device 31. The suction device 29 is provided relative to the yarn travel path and can capture the yarn 33 on the package 93 side when the yarn 33 is disconnected between the spinning device 23 and the take-up device 31. The suction nozzle 109 can capture the yarn 33 on the package 93 side and is configured to move between a position close to the take-up device 31 and a position away from it. Depending on the main reason for the interruption of spinning of spinning device 23, the state at the start of spinning of spinning device 23, or the type of yarn of yarn 33, the spinning machine 1 may use either suction device 29 or suction nozzle 109 to change.

[0163] Therefore, when yarn breakage occurs, the suction device 29 and the suction nozzle 109 can be used flexibly. Thus, in order to start yarn winding, the yarn 33 on the package 93 side can be prepared efficiently using either the suction device 29 or the suction nozzle 109.

[0164] When using the suction device 29, there is no need to temporarily wind the yarn 33 on the package 93 side into the package 93. Therefore, by using the suction device 29, the preparation time required for the yarn 33 on the package 93 side can be shortened. Even if the yarn 33 cannot be captured by the suction device 29, the spinning machine 1 can automatically capture the yarn 33 on the package 93 side by using the suction nozzle 109. As a result, the spinning machine 1 as a whole can achieve an increased success rate in capturing the yarn 33 on the package 93 side and a shorter time required to start winding the yarn 33.

[0165] Preferably, it has a control device that controls at least the spinning device, the take-up device, the fixed capture device, and the movable capture device.

[0166] Therefore, it is possible to change which of the fixed capture device and the movable capture device is used.

[0167] In the spinning machine 1 of this embodiment, when using the suction device 29, the take-up device 31 takes up the yarn 33 on the take-up 93 side. When the yarn 33 is in a region that can be captured by the suction device 29, the take-up is stopped (or, when the yarn 33 is in a region that can be captured by the suction device 29, the unit control unit 19 slows down the take-up so that the yarn end of the yarn 33 moves in a state that can be captured by the suction device 29).

[0168] Therefore, the fine yarn 33 on the side of the roll 93 can be easily captured by the suction device 29.

[0169] In the spinning machine 1 of this embodiment, after the winding of the yarn 33 on the package 93 side stops (or after deceleration), if the suction device 29 fails to capture the yarn 33 on the package 93 side, the winding device 31 winds up the yarn 33 on the package 93 side, and the suction nozzle 109 captures the yarn 33 on the package 93 side.

[0170] Therefore, it is possible to reliably capture the yarn 33 on the side of the roll 93.

[0171] In the spinning machine 1 of this embodiment, when using the suction nozzle 109, the take-up device 31 takes up the yarn 33 at least before the yarn end of the yarn 33 on the package 93 side is located downstream of the suction device 29 in the traveling direction (yarn traveling direction).

[0172] Therefore, the suction nozzle 109 can easily capture the yarn 33 on the package 93 side. Even if the suction device 29 is not equipped with a gate 77, by winding the yarn 33 as described above, it is possible to prevent the yarn 33 from being accidentally captured by the suction device 29. That is, by performing this control, the gate 77 can be omitted.

[0173] In the spinning machine 1 of this embodiment, when spinning of the spinning device 23 is interrupted, the suction device 29 is used.

[0174] Therefore, the suction device 29 can be used effectively.

[0175] In this embodiment, the spinning machine 1 is equipped with a yarn monitoring device 63 or a yarn sensor 99 as a detection device. The detection device detects yarn breaks upstream of the yarn storage device 25 in the traveling direction. If a yarn break is detected by the detection device and spinning of the spinning device 23 is interrupted, a determination is made as to whether the yarn 33 on the package 93 side can be captured by the suction device 29. If the determination result is affirmative, the suction device 29 is used. If the determination result is negative, the suction nozzle 109 is used.

[0176] This allows for an increase in the frequency of use of the suction device 29. Consequently, the time required to prepare the yarn 33 for winding can be further reduced.

[0177] In this embodiment, the spinning machine 1 is designed to use a suction nozzle 109 when spinning is interrupted after the spinning device 23 has stopped due to the breakage of the yarn 33 (e.g., the splicing device 105 fails to splice).

[0178] Therefore, the yarn 33 on the package 93 side can be reliably captured. In addition, since the suction nozzle 109 is used, the spinning machine 1 can efficiently prepare the yarn 33 on the package 93 side.

[0179] The spinning machine 1 of this embodiment includes a prohibition setting unit 121. The prohibition setting unit 121 prohibits the suction device 29 from capturing the yarn 33 on the package 93 side.

[0180] Therefore, it is possible to properly address situations where the suction device 29 fails to capture the yarn 33 effectively.

[0181] The spinning machine 1 of this embodiment includes multiple spinning units 7 and a splicing carriage 9. The splicing carriage 9 is configured to move relative to the multiple spinning units 7. Each spinning unit 7 includes a spinning device 23, a yarn storage device 25, and a take-up device 31. A suction device 29 is provided in each spinning unit 7. A suction nozzle 109 is provided in the splicing carriage 9.

[0182] Therefore, given the use of the suction device 29, it is not necessary to move the splicing carriage 9 relative to the designated spinning unit 7. The suction device 29 is used more frequently than the suction nozzle 109. Therefore, it is possible to efficiently capture the yarn 33 on the package 93 side.

[0183] The spinning machine 1 in this embodiment is equipped with a yarn monitoring device 63 or a spinning sensor 69 as a yarn detection device. The yarn detection device detects the state of the yarn 33 upstream of the yarn storage device 25 in the traveling direction. If spinning is interrupted based on the detection result of the yarn detection device, the suction device 29 is used when spinning resumes.

[0184] Therefore, the suction device 29 can be used effectively.

[0185] In the spinning machine 1 of this embodiment, when spinning of the spinning device 23 is interrupted based on the detection result of the yarn detection device, and the suction device 29 fails to capture the yarn 33 on the package 93 side, the suction nozzle 109 is used. Furthermore, when spinning is interrupted due to abnormal tension of the yarn 33 traveling along the yarn path, failure of the splicing device 105 located downstream of the yarn storage device 25 in the traveling direction, or stoppage due to a power outage or momentary power failure, the suction nozzle 109 is used when spinning resumes.

[0186] Therefore, the suction nozzle 109 can be used effectively.

[0187] In this embodiment, the spinning machine 1 stops when spinning of the spinning device 23 is interrupted due to a power outage or momentary power failure, while the yarn 33 is connected between the yarn storage device 25 and the package 93. When spinning of the spinning device 23 resumes after power is restored, the winding device 31 winds up the yarn 33 on the package 93 side, unwinds the yarn 33 remaining on the yarn storage roller 53 of the yarn storage device 25, and captures the yarn 33 on the package 93 side.

[0188] Therefore, the suction device 29 can be used more effectively.

[0189] In the spinning machine 1 of this embodiment, when spinning of the spinning device 23 is interrupted due to a power outage or a momentary power outage, the take-up width of the package 93 is narrowed. When spinning of the spinning device 23 resumes after power is restored, the fine yarn 33 on the package 93 side is captured by the suction nozzle 109.

[0190] Therefore, the suction nozzle 109 can be used more effectively.

[0191] The spinning machine 1 of this embodiment includes a splicing device 105. The splicing device 105 splices the yarn 33 from the spinning device 23 side to the yarn 33 from the package 93 side when the yarn 33 breaks between the spinning device 23 and the take-up device 31. The splicing device 105 splices the yarn 33 from the package 93 side, which is in a state where the yarn end has been captured by the suction device 29 or the suction nozzle 109, with the yarn 33 from the spinning device 23 side.

[0192] Therefore, the connection of the connector device 105 can be smoothly performed.

[0193] The spinning machine 1 of this embodiment is equipped with a yarn capture detection sensor 79. The yarn capture detection sensor 79 detects whether the suction device 29 has successfully captured the yarn 33 on the package 93 side.

[0194] Therefore, it is possible to automatically switch from using the suction device 29 to using the suction nozzle 109 depending on the situation.

[0195] In the spinning machine 1 of this embodiment, the suction device 29 is configured to capture the yarn 33 by attracting it from the package 93 side. The suction device 29 has a gate 77 that allows the suction device 29 to switch between a suction state and a suction stop state. During the continuous winding of the yarn 33 between the spinning device 23 and the take-up device 31, the gate 77 causes the suction device 29 to enter a suction stop state.

[0196] Therefore, by stopping the suction during periods when the suction of the suction device 29 is not required, energy saving of the spinning unit 7 can be achieved.

[0197] The spinning machine 1 in this embodiment is equipped with a yarn monitoring device 63 or a spinning sensor 69 as a yarn detection device. This yarn detection device detects the state of the yarn 33 upstream of the yarn accumulation device 25 in the traveling direction. If spinning of the spinning device 23 is interrupted based on the detection result of the yarn detection device, the gate 77 changes the suction device 29 from the suction stop state to the suction state at a time delay before the spinning interruption and when there is yarn 33 remaining on the yarn accumulation roller 53 of the yarn accumulation device 25.

[0198] Thus, the fine yarn 33 on the side of the roll 93 can be reliably captured by the suction device 29.

[0199] The spinning machine 1 of the second invention includes multiple spinning units 7, a splicing carriage 9, and a splicing device 105. The splicing carriage 9 is configured to move relative to the multiple spinning units 7. Each spinning unit 7 includes a spinning device 23, a take-up device 31, and a yarn storage device 25. The spinning device 23 generates yarn 33 by spinning fiber bundles 37 and can supply the yarn 33. The take-up device 31 takes the yarn 33 supplied from the spinning device 23 to form a package 93. The yarn storage device 25 is disposed midway in the yarn travel path formed between the spinning device 23 and the take-up device 31. The splicing device 105 splices the yarn 33 on the spinning device 23 side and the yarn 33 on the package 93 side when the yarn 33 breaks between the spinning device 23 and the take-up device 31. Each spinning unit 7 has an attraction device 29. The suction device 29, capable of capturing the yarn 33 on the package 93 side, is positioned between the yarn storage device 25 and the take-up device 31, upstream of the splicing device 105 in the direction of travel. The splicing carriage 9 has a suction nozzle 109. The suction nozzle 109 is configured to move between a position close to the take-up device 31 (approach position) and a position away from it (retreat position). At the approach position, the suction nozzle 109 captures the yarn 33 on the package 93 side and can move from the approach position to the retreat position while the yarn 33 is captured. The retreat position of the suction nozzle 109 is a position further away from the take-up device 31 than the splicing device 105. The splicing device 105 splices the yarn 33 on the package 93 side, captured by the suction device 29 or the suction nozzle 109, with the yarn 33 on the spinning device 23 side.

[0200] Therefore, when the yarn 33 breaks, the suction device 29 and the suction nozzle 109 can be used appropriately for splicing. Thus, the splicing operation can be performed appropriately using either the suction device 29 or the suction nozzle 109. As a result, the success rate of yarn 33 capture on the overall package 93 side of the spinning machine 1 can be improved, and the time required for preparing the yarn 33 to begin take-up can be shortened.

[0201] The spinning machine 1 of this embodiment allows switching between a splice using the suction device 29 and a splice using the suction nozzle 109 when spinning resumes after the spinning of the spinning device 23 has been interrupted. When the spinning of the spinning device 23 has been interrupted, the take-up device 31 takes the yarn 33 on the package 93 side so that the yarn 33 on the package 93 side is located in an area that can be captured by the suction device 29. When the suction nozzle 109 is used, the splice carriage 9 is controlled so that it is positioned corresponding to the spinning unit 7 where the yarn 33 was disconnected. Furthermore, the control of the splice carriage 9 includes maintaining the splice carriage 9 in the working position corresponding to the spinning unit 7 when it is already in that position.

[0202] Therefore, the fine yarn 33 on the side of the roll 93 can be reliably captured using the suction device 29 or the suction nozzle 109.

[0203] The preferred embodiments of the present invention have been described above, but the above configuration can be modified, for example, as follows. The following modifications can be appropriately combined.

[0204] In the above embodiment, a fixed capture joint is used when spinning is interrupted by cutting the yarn 33 based on a yarn defect detected by the yarn monitoring device 63. However, for example, the unit control unit 19 may select either a fixed capture joint or a movable capture joint based on the type of yarn defect detected by the yarn monitoring device 63.

[0205] In the above embodiment, the splicing device 105 for splicing is provided on a splicing carriage 9 shared by multiple spinning units 7, but it can also be provided in each spinning unit 7. In this case, the splicing device 105 is provided between the yarn storage device 25 and the take-up device 31 in the direction of travel of the yarn 33. The suction tube 107 and the suction nozzle 109 can also be provided in each spinning unit 7. Therefore, the splicing carriage 9 can also be omitted.

[0206] In the above embodiment, the yarn capture detection sensor 79 is disposed outside the suction device 29 and immediately downstream, but it can also be disposed inside the suction device 29 (inside the suction port 73).

[0207] In the above embodiment, the yarn capture detection sensor 79 is provided in the spinning unit 7 with the attraction device 29, but it can also be provided in the splicing trolley 9.

[0208] In the above embodiment, a yarn capture detection sensor 79 is provided. However, instead of the yarn capture detection sensor 79, the success of the attraction device 29 in capturing the yarn 33 can be detected by the detection signals of the yarn accumulation detection sensor 61 and the yarn travel sensor 67. That is, if the yarn accumulation detection sensor 61 detects that the accumulation of the yarn 33 has fallen below a predetermined amount and the winding continues for a predetermined time, and the yarn travel sensor 67 detects the presence of the yarn 33, it can be determined that the attraction device 29 has successfully captured the yarn 33.

[0209] The configuration and position of the gate 77 are arbitrary as long as it can switch the generation / stopping of the suction airflow. For example, the gate 77 can also be set at the suction port 73.

[0210] In cases where spinning is interrupted in each of the multiple spinning units 7 and then resumes separately, it is sometimes decided to perform a moving capture joint in all of the multiple spinning units 7. In this case, considering the movement of the joint carriage 9 equipped with the suction nozzle 109, the suction device 29 can also be used manually in a portion of the spinning units 7 instead of the suction nozzle 109. That is, an operator or the like can manually transport the yarn end of the yarn 33 on the package 93 side, which is intended to be captured by the suction nozzle 109, toward the suction device 29, thereby achieving the capture of the yarn 33 on the package 93 side. In spinning units 7 that are waiting for the arrival of the joint carriage 9 for the moving capture joint, when the yarn capture detection sensor 79 detects the yarn 33, a fixed capture joint is performed instead of a moving capture joint.

[0211] In the above embodiment, the yarn 33 is drawn out of the spinning device 23 by the yarn storage device 25. Alternatively, the spinning unit 7 may be configured to draw the yarn 33 out of the spinning device 23 via a feed roller pair instead of the yarn storage device 25. In this case, at least one of the yarn storage device 25, a relaxation tube, and a mechanical compensator may be provided on the downstream side of the feed roller pair.

[0212] In the above embodiment, the suction device 29 is located upstream of the waxing device 65. However, the suction device 29 may also be located downstream of the waxing device 65.

[0213] In the above embodiments, the use of the suction device 29 or the suction nozzle 109 is determined based on the main reason for the interruption of spinning or the state at the start of spinning. However, it is also possible that, regardless of the main reason, the suction device 29 first captures the yarn 33 on the package 93 side, and when the yarn capture detection sensor 79 detects that the suction device 29 has failed to capture, the suction nozzle 109 is used.

[0214] In the above embodiment, three control devices are provided: a central control device 13, a unit control unit 19, and a trolley control unit 111. However, two of the three can be combined appropriately, or the three can be made into one control device.

[0215] In the above embodiment, each device is configured such that the yarn 33 supplied from the top is wound up from the bottom. However, each device may also be configured such that the yarn supplied from the bottom is wound up from the top.

[0216] Taking the foregoing teachings into account, it becomes clear that the present invention can be implemented in many more ways and variations. Therefore, it should be understood that the present invention can be practiced, within the scope of the appended patent claims, by methods other than those described in this specification.

Claims

1. A spinning machine, characterized in that, have: A spinning device that generates yarn by spinning a fiber bundle and supplies the yarn. The winding device winds up the yarn supplied from the spinning device to form a package; A yarn storage device is disposed midway along the yarn travel path formed between the spinning device and the take-up device. A fixed capturing device is provided for the yarn travel path, which captures the yarn on the package side, i.e. the capturing portion, when the yarn breaks between the spinning device and the take-up device. as well as The movable capturing device moves between an approach position close to the winding device and a retracted position further away from the winding device to capture the capturing portion. Depending on the main reason for the interruption of spinning in the above-mentioned spinning device, the state of the spinning device at the start of spinning, or the type of yarn, it is selected whether to use the above-mentioned fixed capture device or the above-mentioned movable capture device.

2. The spinning machine as described in claim 1, characterized in that, A control device is provided that controls at least the aforementioned spinning device, the aforementioned take-up device, the aforementioned fixed capture device, and the movable capture device.

3. The spinning machine as described in claim 1 or 2, characterized in that, When using the aforementioned fixed capture device, when the capture portion is located in an area that can be captured by the fixed capture device, the winding device stops winding, or... When the aforementioned capturing portion is located in an area that can be captured by the aforementioned fixed capturing device, the aforementioned winding device slows down the winding so that the aforementioned capturing portion moves in a state that can be captured by the aforementioned fixed capturing device.

4. The spinning machine as described in claim 3, characterized in that, After the winding of the yarn on the packaged side stops or slows down, and if the fixed capturing device fails to capture the yarn on the packaged side, the winding device winds up the yarn on the packaged side. When the spinning of the above-mentioned spinning device begins, the state in which the above-mentioned capturing part is wound around the above-mentioned package is such that the above-mentioned movable capturing device captures the above-mentioned capturing part wound around the above-mentioned package.

5. The spinning machine according to any one of claims 1 to 4, characterized in that, When using the movable capture device described above, the winding device performs the winding of the yarn at least before the capture portion is located downstream of the yarn travel direction from the fixed capture device.

6. The spinning machine according to any one of claims 1 to 5, characterized in that, A detection device is provided that can detect yarn breakage on the upstream side of the yarn travel direction by comparing it with the above-mentioned yarn storage device. As the main cause of spinning interruption in the aforementioned spinning device, when the aforementioned detection device detects a yarn breakage and the spinning of the aforementioned spinning device is interrupted, it is determined whether the aforementioned fixed capture device can capture the aforementioned capture portion. If the above determination is affirmative, then the aforementioned fixed capture device shall be used. If the result of the above determination is negative, then the above movable capture device shall be used.

7. The spinning machine according to any one of claims 1 to 6, characterized in that, As the main reason for the interruption of spinning in the above-mentioned spinning device, when spinning is interrupted due to yarn breakage before the spinning of the above-mentioned spinning device is interrupted, the above-mentioned movable capture device is used when spinning is resumed afterwards.

8. The spinning machine according to any one of claims 1 to 7, characterized in that, It has a setting unit that sets a setting to prevent the fixed capturing device from capturing the capturing part.

9. The spinning machine according to any one of claims 1 to 8, characterized in that, have: Multiple spinning units; and The work trolley that moves relative to the aforementioned multiple spinning units Each of the aforementioned spinning units includes the aforementioned spinning apparatus, the aforementioned yarn storage device, and the aforementioned take-up device. The aforementioned fixed capture device is installed in each of the aforementioned spinning units. The aforementioned movable capture device is installed on the aforementioned work trolley.

10. The spinning machine according to any one of claims 1 to 9, characterized in that, A yarn detection device is provided that detects the condition of the yarn upstream of the yarn travel direction from the yarn storage device described above. As the main reason for the interruption of spinning in the above-mentioned spinning device, the above-mentioned fixed capture device is used when the spinning of the above-mentioned spinning device is interrupted based on the detection results of the above-mentioned yarn detection device.

11. The spinning machine according to claim 10, characterized in that, As the spinning start state of the aforementioned spinning device, if the spinning of the aforementioned spinning device is interrupted based on the detection result of the aforementioned yarn detection device, or if the aforementioned fixed capture device fails to capture the yarn on the package side, or... As the main reason for the interruption of spinning in the above-mentioned spinning device, if the splicing device located downstream of the yarn storage device in the yarn travel direction fails, or if the spinning stops due to a power outage, the above-mentioned movable capture device is used when spinning resumes.

12. The spinning machine according to any one of claims 1 to 11, characterized in that, As the spinning device begins, if spinning is interrupted due to a power outage and stops while the yarn is connected between the yarn storage device and the package, the following conditions apply. When the spinning device starts spinning after power is restored, the yarn on the package side is wound up by the take-up device, the yarn remaining on the yarn storage roller of the yarn storage device is unwound from the yarn storage roller of the yarn storage device, and the captured portion is captured by the fixed capture device.

13. The spinning machine according to any one of claims 1 to 12, characterized in that, As a major cause of spinning interruption in the aforementioned spinning device, in the event of a power outage causing spinning interruption... Immediately after the interruption, the take-up width of the aforementioned package is narrowed. When the spinning device resumes spinning after power is restored, the aforementioned movable capture device captures the aforementioned capture portion.

14. The spinning machine according to any one of claims 1 to 13, characterized in that, A splicing device is provided that, in the event of a yarn breakage between the spinning device and the take-up device, splices the yarn on the spinning device side to the yarn on the take-up side. The movable capturing device moves to a retracted position after capturing the captured portion, thereby guiding the yarn on the package side toward the splicing device. The aforementioned splicing device splices the yarn on the package side, which is in a state captured by the aforementioned fixed or movable capturing device, with the yarn on the spinning device side. When a yarn breakage occurs between the spinning device and the take-up device, the fixed or movable capture device that captures the capture portion is the same as the fixed or movable capture device that guides the yarn on the package side to the splicing device.

15. The spinning machine according to any one of claims 1 to 14, characterized in that, A yarn capture detection sensor is provided to detect whether the aforementioned fixed capture device has successfully captured the aforementioned capture portion.

16. The spinning machine according to any one of claims 1 to 15, characterized in that, The aforementioned fixed capturing device is configured to capture the aforementioned capturing portion by attracting the yarn on the packaged side. The aforementioned fixed capture device includes a switching unit that changes the fixed capture device to a suction state and a suction stop state. The aforementioned modification involves making the fixed capture device stop attracting the yarn during the period when the yarn is being wound continuously between the spinning device and the winding device.

17. The spinning machine according to claim 16, characterized in that, A yarn detection device is provided that detects the condition of the yarn upstream of the yarn travel direction from the yarn storage device described above. As the main reason for the interruption of spinning in the above-mentioned spinning device, if the spinning of the above-mentioned spinning device is interrupted based on the detection result of the above-mentioned yarn detection device, the above-mentioned change unit changes the above-mentioned fixed capture device from the suction stop state to the suction state at a time when there is yarn remaining on the yarn accumulation roller of the above-mentioned yarn accumulation device, which is delayed from the timing of the spinning interruption.

18. A spinning machine, characterized in that, have: Multiple spinning units; The work trolley that moves relative to the aforementioned multiple spinning units; and Connector device, Each of the above-mentioned spinning units has: A spinning device that generates yarn by spinning a fiber bundle and supplies the yarn. The winding device winds up the yarn supplied from the spinning device to form a package; as well as A yarn storage device is disposed midway along the yarn travel path formed between the spinning device and the take-up device. The aforementioned splicing device is designed to splice the yarn on the spinning device side and the yarn on the package side when a yarn breakage occurs between the spinning device and the take-up device. Each of the aforementioned spinning units has a fixed capturing device, which is disposed between the yarn storage device and the take-up device, positioned upstream of the splicing device in the yarn travel direction, and captures the yarn on the take-up side, i.e., the capturing portion. The aforementioned work trolley has a movable capture device that moves between an approach position close to the winding device and a retracted position further away from the winding device. At the approach position, the capture portion is captured, and after capturing the captured portion, the trolley moves from the approach position to the retracted position. The aforementioned retraction position is a position that is farther away from the aforementioned winding device than the aforementioned joint device. The aforementioned splicing device splices the yarn on the package side, which is in a state captured by the aforementioned fixed capture device or the aforementioned movable capture device, with the yarn on the aforementioned spinning device side.

19. The spinning machine as described in claim 18, characterized in that, When spinning resumes after the spinning of the aforementioned spinning device has been interrupted, it is possible to switch between a connector using the aforementioned fixed capture device and a connector using the aforementioned movable capture device. When using the aforementioned fixed capture device, after the spinning of the aforementioned spinning device is interrupted, the aforementioned take-up device takes up the yarn on the package side in such a way that the capture portion is located in the area that can be captured by the aforementioned fixed capture device. When using the aforementioned movable capture device, the work trolley is controlled such that it is positioned at the position corresponding to the spinning unit where the yarn breakage has occurred.

Images