Yarn take-up machine

Abstract

A yarn take-up device is provided. A take-up device (25) of a spinning machine takes up a spun yarn (5) supplied from a spinning device (22) to form a package (7). In a case where the spun yarn (5) is broken, a joint device (82) performs joint of the spun yarn (5) on the spinning device (22) side and the spun yarn (5) on the package (7) side. In a case where the spun yarn (5) is broken, a suction device (24) can catch the spun yarn (5) on the package (7) side, and a suction pipe (83) can catch the spun yarn (5) on the spinning device (22) side. The spinning machine has a plurality of spinning units (2). The take-up device (25) of each spinning unit (2) has a package rotation device and a traversing device (73). In a case where the spun yarn (5) is broken between the spinning device (22) and the take-up device (25), at least one of the package rotation device and the traversing device (73) is operated before joint by the joint device (82), thereby bringing the spun yarn (5) on the package (7) side close to a central region in a take-up width direction of the package (7).

Description

Technical Field

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

[0002] Yarn winding machines that can perform yarn splicing treatment before the start of yarn winding have been known for a long time.

[0003] Japanese Patent Application Publication No. 2018-052638 (Patent Document 1) discloses a spinning frame as such a yarn take-up machine. The spinning frame of Patent Document 1 includes multiple spinning units and a splicing carriage. Each spinning unit includes a spinning device for generating yarn and a take-up device for winding the yarn into a package while traversing it laterally. When the yarn breaks in a certain 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 the end of one of the broken yarns (the yarn on the spinning device side) and guides it to the splicing device. The suction nozzle captures the end of the other broken yarn (the yarn on the take-up device side) and guides it to the splicing device. The splicing device then splices the guided yarn ends together.

[0005] The spinning frame of Patent Document 1 includes a yarn guide as a movable part. The yarn guide can restrict the yarn so that the yarn is not moved laterally by the traversing yarn guide.

[0006] Japanese Patent Application Publication No. 2015-036324 (Patent Document 2) discloses an automatic winding machine as a yarn take-up machine. The automatic winding machine of Patent Document 2 includes an upper yarn capture guide device and a lower yarn capture guide device. The upper yarn capture guide device performs a yarn capture and guide action to capture the yarn wound on the package and guide it to the splicing device. During the yarn capture and guide action, the traversing yarn guide does not traverse and remains in standby mode. Summary of the Invention

[0007] The spinning machine in Patent Document 1 restricts the yarn by using a yarn guide, which is a movable part, thus making the structure complex.

[0008] The automatic winding machine of Patent Document 2 is related to the action of capturing the yarn on the package side and guiding it to the splicing device, while the traverse yarn guide is just in standby mode.

[0009] The purpose of this invention is to provide a yarn winding machine that can restrict the yarn through a simple configuration.

[0010] According to the first aspect of the present application, there is provided a yarn winder including a yarn supply device, a winding device, a joint device, a first catching device, a second catching device, and a control unit. The yarn supply device is capable of supplying a yarn. The winding device winds the yarn supplied from the yarn supply device while traversing the yarn to form a package. The joint device performs a joint of the yarn on the yarn supply device side and the yarn on the package side when the yarn is broken between the yarn supply device and the winding device. The first catching device is capable of catching the yarn on the package side when the yarn is broken between the yarn supply device and the winding device. The second catching device is capable of catching the yarn on the yarn supply device side when the yarn is broken between the yarn supply device and the winding device. The control unit controls the winding device. The yarn winder includes a plurality of processing units. Each processing unit includes the yarn supply device and the winding device. The winding device of each processing unit includes a package rotating device and a traversing device. The package rotating device is independently driven for each processing unit to rotate the package. The traversing device is independently driven for each processing unit and has a yarn guide that traverses the yarn wound on the package. After the yarn is broken between the yarn supply device and the winding device and before the joint is performed by the joint device, the control unit controls at least one of the package rotating device and the traversing device to position a portion of the yarn that is close to the package in a central region of a winding width direction of the package in a state where the yarn is continuous between the first catching device and the winding device.

[0011] Thus, the yarn on the package side can be substantially restricted after the yarn is broken between the yarn supply device and the winding device and before the joint is performed by the joint device, regardless of a complicated configuration. Thus, the joint can be smoothly performed.

[0012] In the yarn winder described above, it is preferable that the control unit perform a yarn guiding control that brings the yarn on the package side close to a central region of a winding width direction of the package by causing at least one of the package rotating device and the traversing device to operate as a preparatory operation for the joint after the yarn is broken between the yarn supply device and the winding device and before the joint is performed by the joint device.

[0013] Thus, the yarn on the package side can be substantially restricted after the yarn is broken between the yarn supply device and the winding device and before the joint is performed by the joint device, regardless of a complicated configuration. Thus, the joint can be smoothly performed.

[0014] In the yarn winder described above, it is preferable that the following configuration be adopted. That is, the traverse device is provided with a traverse drive motor that reciprocally moves the yarn guide. In the yarn transfer control, the control section controls the traverse drive motor to move the yarn guide.

[0015] Thus, the yarn on the package side can be physically guided by the yarn guide. Therefore, the yarn on the package side can be reliably restricted before the joint by the joint device.

[0016] In the yarn winder described above, it is preferable that the following configuration be adopted. That is, in the yarn transfer control, the yarn guide is moved from the end region to the central region of the winding width of the package.

[0017] Thus, the yarn on the package side can be reliably moved to the central region of the winding width of the package before the joint by the joint device.

[0018] In the yarn winder described above, it is preferable that the following configuration be adopted. That is, in the yarn transfer control, the package rotation device rotates the package in the winding direction and then stops it. After the rotation of the package is stopped, the joint device performs the joint.

[0019] Thus, the yarn on the package side can be substantially restricted by the package rotation device without using the traverse device before the joint by the joint device.

[0020] In the yarn winder described above, it is preferable that the following configuration be adopted. That is, the yarn winder is provided with a yarn detection sensor that can detect the yarn located in the central region in the winding width direction of the package. In the yarn transfer control, the package rotation device rotates the package in the direction opposite to the winding direction. When the yarn detection sensor detects the yarn reciprocally moved in association with the unwinding from the package, the rotation of the package in the opposite direction is stopped.

[0021] Thus, the yarn on the package side can be substantially restricted by the package rotation device and the yarn detection sensor without using the traverse device before the joint by the joint device.

[0022] In the yarn winder described above, it is preferable that the following configuration be adopted. That is, the yarn supply device is provided with a draft device that drafts the fiber bundle and a spinning device that twists the fiber bundle drafted by the draft device by a twist back air flow, thereby generating the yarn.

[0023] Thus, the quality of the package in which the yarn generated by twisting the fiber bundle by the twist back air flow is wound can be improved.

[0024] Preferably, the yarn take-up machine described above has a yarn storage device that stores yarn between the yarn supply device and the take-up device.

[0025] Thus, it is possible to store the yarn supplied from the yarn supply device and to take up the yarn unwound from the yarn storage device to the package, and thus it is possible to improve the quality of the package.

[0026] In the yarn take-up machine described above, it is preferable to have the following configuration. That is, the first catching device is fixedly provided between the yarn storage device and the take-up device.

[0027] Thus, it is possible to simplify the configuration of the first catching device that catches the yarn on the package side.

[0028] In the yarn take-up machine described above, it is preferable to have the following configuration. That is, the yarn take-up machine has a work trolley that is capable of advancing with respect to a plurality of the processing units. The work trolley has the second catching device and the joint device.

[0029] Thus, it is possible to achieve a simple configuration.

[0030] According to a second aspect of the present application, there is provided a yarn take-up machine having the following configuration. That is, the yarn take-up machine has a yarn supply device, a take-up device, a joint device, a first catching device, and a second catching device. The yarn supply device is capable of supplying yarn. The take-up device takes up yarn supplied from the yarn supply device while traversing the yarn to form a package. The joint device performs jointing of the yarn on the yarn supply device side and the yarn on the package side when the yarn is broken between the yarn supply device and the take-up device. The first catching device is capable of catching the yarn on the package side when the yarn is broken between the yarn supply device and the take-up device. The second catching device is capable of catching the yarn on the yarn supply device side when the yarn is broken between the yarn supply device and the take-up device. The second catching device is capable of moving between a catching position and a standby position. At the catching position, the second catching device catches the yarn supplied from the yarn supply device. The standby position is a position on the downstream side in the yarn advancing direction from the joint device. After the yarn supply from the yarn supply device is interrupted, the first catching device catches the yarn on the package side on the upstream side in the yarn advancing direction from the joint device, and the second catching device is controlled to retreat in a state in which the second catching device is standing by at the standby position, in which the yarn on the package side is caused to approach a central region in the winding width direction of the package, and the yarn between the package and the first catching device is caused to retreat from a path in which the yarn on the package side moves from the standby position to the catching position of the second catching device.

[0031] Therefore, during the operation performed after the yarn is disconnected between the yarn supply device and the take-up device, and before the yarn is joined by the splicing device, interference between the second capture device and the yarn on the package side can be prevented.

[0032] In the aforementioned yarn take-up machine, the following configuration is preferred: the yarn take-up machine includes multiple processing units and a work trolley. The work trolley is capable of traveling relative to the multiple processing units. Each processing unit includes the aforementioned yarn feeding device and the aforementioned take-up device. The work trolley includes the aforementioned second capturing device and the aforementioned splicing device.

[0033] This allows for a simple configuration. Attached Figure Description

[0034] Figure 1 This is a front view showing the overall configuration of a spinning machine according to one embodiment of the present invention.

[0035] Figure 2 This is a side view of the spinning unit of a spinning machine.

[0036] Figure 3 This is a side view showing the state of yarn breakage in a spinning unit.

[0037] Figure 4 This is a side view showing the state in which the yarn on the package side is captured by the suction device and can be picked up by the splicing device of the splicing trolley during the fixed capture splicing process.

[0038] Figure 5 This is a side view showing the spinning device restarting spinning, with the yarn being guided by the suction tube to the splicing device.

[0039] Figure 6 This is a side view showing the connection made by a connector device.

[0040] Figure 7 This is a front view showing the state in which the yarn on the package side is captured by the suction device during the process of fixing the capture joint.

[0041] Figure 8 This is a front view showing the operation of the traverse device based on yarn-pulling control.

[0042] Figure 9 This is a side view showing that during the process of moving the capture joint, the yarn on the package side is captured by the suction nozzle, and the yarn on the spinning device side is captured by the suction tube, and both are guided to the splicing device for splicing.

[0043] Figure 10 It is a three-dimensional diagram showing the detailed structure of the roll-rotating device and the traversing device. Detailed Implementation

[0044] A spinning machine (yarn winding machine) 1 of one embodiment of the present application will be described with reference to the drawings. In the following description, "upstream side" and "downstream side" each refer to an upstream side and a downstream side, respectively, of a traveling direction (yarn traveling direction) of a spun yarn (yarn) 5, a sliver 4a, or a fiber bundle 4b at the time of winding of the spun yarn 5.

[0045] As shown in FIG. 1, the spinning machine 1 is provided with a blow box 111, a control box 112, a plurality of spinning units (processing units) 2, and a joint trolley (work trolley) 80. The plurality of spinning units 2 are arranged in a prescribed direction. Each spinning unit 2 (spinning machine 1) performs spinning using a spinning device 22 and the like described later. In the present embodiment, the spinning machine 1 is configured as an air-jet spinning machine. Figure 1

[0046] A blower 113 and the like that functions as a negative pressure source are arranged in the blow box 111.

[0047] A central control device 115, a display portion 116, and an operation portion 117 are arranged in the control box 112.

[0048] The central control device 115 centrally manages and controls each portion of the spinning machine 1. The central control device 115 is connected to a unit control portion (control portion) 15 equipped in each spinning unit 2 via a signal line not shown. In the present embodiment, each spinning unit 2 is provided with the unit control portion 15, but one unit control portion 15 can be shared by a prescribed number (for example, 2 or 4) of spinning units 2. Figure 2

[0049] The display portion 116 can display a content of a setting of the spinning unit 2 and / or information related to a state of each spinning unit 2, and the like. An operator operates the operation portion 117 in order to perform a setting of the spinning machine 1 and / or in order to perform selection of information displayed by the display portion 116. The display portion 116 and the operation portion 117 can be constituted by a touch panel display.

[0050] As shown in FIG. 1, each spinning unit 2 is provided with a draft device 21, a spinning device (yarn supply device) 22, a yarn storage device 23, a suction device (first capturing device) 24, and a winding device 25. These devices are arranged in order from the upstream side toward the downstream side in a traveling direction of the spun yarn 5 and the like. Figure 2 The joint trolley 80 is provided so as to be movable with respect to each spinning unit 2. One joint trolley 80 is provided for the plurality of spinning units 2. The joint trolley 80 is provided with a yarn guide 81, a yarn guide 82, a yarn guide 83, a yarn guide 84, and a yarn guide 85.

[0051] Figure 1 ​​​One joining trolley 80 is shown in the figure, but the spinning machine 1 can also be provided with a plurality of joining trolleys 80. As described later, the joining trolley 80 is provided with a joining device 82, a suction pipe (second capturing device) 83, and a suction nozzle 84.

[0052] The drafting device 21 is provided at an upper portion of the spinning unit 2 (spinning machine 1). The drafting device 21 is provided with a plurality of drafting roller pairs. Each of the drafting roller pairs is composed of two drafting rollers.

[0053] Specifically, the drafting device 21 is provided with four drafting roller pairs. The four drafting roller pairs are, in order from the upstream side toward the downstream side, a rear roller pair 41, a third roller pair 42, an intermediate roller pair 43, and a front roller pair 44. A godet 45 is provided at each of the drafting rollers of the intermediate roller pair 43.

[0054] The four drafting roller pairs each have a driving roller and a driven roller that face each other. For the four drafting roller pairs, a driving source such as a motor, which is not shown, is provided at each of the driving rollers. Each of the driving rollers is rotationally driven by the driving source with the axis of the driving roller as the center. The driven roller of each of the drafting roller pairs is provided so as to be able to rotate with the axis of the driven roller as the center via a bearing or the like, which is not shown.

[0055] The drafting device 21 carries the sliver 4a supplied from the sliver supply portion 20 by sandwiching the sliver 4a between the drafting rollers (between the driving roller and the driven roller) of each of the drafting roller pairs, thereby stretching (drafting) the sliver 4a to a predetermined fiber amount (or thickness) to generate a fiber bundle 4b. The fiber bundle 4b generated by the drafting device 21 is supplied to the spinning device 22.

[0056] The sliver supply portion 20 is provided at the upstream side of the drafting device 21. A container, that is, a bobbin, which stores the sliver 4a, is provided at the sliver supply portion 20.

[0057] The spinning device 22 is configured as an air jet spinning device in the present embodiment. The spinning device 22 imparts a twist to the fiber bundle 4b (drafted sliver 4a) generated by the drafting device 21 by a twist air flow, thereby twisting to generate a yarn 5. The spinning device 22 is provided at the downstream side of the drafting device 21.

[0058] In the spinning unit 2 (spinning machine 1), a supply device having the spinning device 22 supplies the yarn 5. The yarn 5 generated by the supply device travels from the supply device toward a take-up device 25, and is taken up by the take-up device 25. A yarn path through which the yarn 5 travels is formed between the supply device and the take-up device 25.

[0059] The yarn storage device 23 draws out the yarn 5 generated by the spinning device 22 from the spinning device 22 and temporarily stores the yarn 5. The yarn storage device 23 is provided at the yarn path formed between the supply device and the take-up device 25. Specifically, the yarn storage device 23 is provided at a position that is on the downstream side of the spinning device 22.

[0060] The yarn accumulation device 23 is provided with a yarn accumulation roller 51, an electric motor 52, a yarn hooking member 53, a yarn guide 54, and a yarn accumulation amount detection sensor 56.

[0061] The yarn accumulation roller 51 is rotationally driven by the electric motor 52. The yarn accumulation roller 51 temporarily accumulates the spun yarn 5 wound on the outer peripheral surface thereof. The yarn accumulation roller 51 is able to draw out the spun yarn 5 from the spinning device 22 at a predetermined speed by rotating at a predetermined rotational speed in a state where the spun yarn 5 is wound on the outer peripheral surface.

[0062] The yarn hooking member 53 is able to hook the spun yarn 5. The yarn hooking member 53 guides the spun yarn 5 to the outer peripheral surface of the yarn accumulation roller 51 by rotating integrally with the yarn accumulation roller 51 in a state where the spun yarn 5 is hooked.

[0063] The yarn guide 54 is disposed on the downstream side of the yarn accumulation roller 51. The yarn guide 54 restricts the track of the spun yarn 5 swung by the rotating yarn hooking member 53, and stably guides the spun yarn 5 in the yarn path in which the spun yarn 5 travels on the downstream side (the take-up device 25 side) of the yarn guide 54.

[0064] The yarn accumulation amount detection sensor 56 is able to detect the yarn accumulation amount of the yarn accumulation roller 51. The yarn accumulation amount detection sensor 56 is disposed to face an appropriate position of the outer peripheral surface of the yarn accumulation roller 51. The yarn accumulation amount detection sensor 56 detects the presence or absence of the spun yarn 5 at the position. The yarn accumulation amount detection sensor 56 transmits the detected detection signal to the unit control section 15. The unit control section 15 is able to detect whether or not the yarn accumulation amount is a predetermined amount or more on the basis of the detection signal.

[0065] The yarn accumulation device 23 is able to temporarily accumulate the spun yarn 5 on the outer peripheral surface of the yarn accumulation roller 51, and thus functions as a kind of buffer for the spun yarn 5. Thereby, it is possible to eliminate adverse situations (for example, slackening of the spun yarn 5, etc.) caused by the fact that the spinning speed of the spinning device 22 and the take-up speed (the traveling speed of the spun yarn 5 taken up to the package 7 described later) become inconsistent for some reason.

[0066] A yarn monitoring device 47 is provided between the spinning device 22 and the yarn accumulation device 23. The yarn monitoring device 47 detects the state of the spun yarn 5 on the upstream side (the yarn supply device side) of the yarn accumulation device 23. The spun yarn 5 generated by the spinning device 22 passes through the yarn monitoring device 47 before being accumulated by the yarn accumulation device 23.

[0067] The yarn monitoring device 47 detects the quality of the traveling fine yarn 5 by a photosensor, and detects a yarn defect included in the fine yarn 5. As the yarn defect, for example, an abnormality in thickness of the fine yarn 5 and / or a foreign matter included in the fine yarn 5 are included. The yarn monitoring device 47 transmits a yarn defect detection signal to the unit control section 15 in a case where a yarn defect of the fine yarn 5 is detected. The yarn monitoring device 47 can monitor the quality of the fine yarn 5 using a sensor of an electrostatic capacitance type, for example, instead of the photosensor. The yarn monitoring device 47 can be configured to detect an abnormality in tension of the fine yarn 5 instead of or on the basis of these yarn defects.

[0068] In order to maintain the yarn quality, it is preferable to remove the yarn defect and the abnormal portion. The unit control section 15 judges whether or not to cut the fine yarn 5 on the basis of the detection result of the yarn monitoring device 47. The cutting of the fine yarn 5 is realized by the control of the unit control section 15 in such a manner that the spinning of the spinning device 22 is stopped. The cutting of the fine yarn 5 can also be realized by stopping the drafting of the drafting device 21 (for example, the rotation of the back roller pair 41). In either case where the spinning of the spinning device 22 is stopped or where the supply of the fiber bundle 4b from the drafting device 21 to the spinning device 22 is stopped, the spinning of the spinning device 22 is substantially interrupted. The spinning unit 2 can be provided with a cutter, and the unit control section 15 performs the cutting of the fine yarn 5 by the cutter. In a case where the fine yarn 5 is cut by the cutter, the unit control section 15 also performs the control in such a manner that the spinning of the spinning device 22 is substantially interrupted.

[0069] The suction device 24 is capable of sucking the fine yarn 5 on the side of the package 7 in a case where the fine yarn 5 is broken between the spinning device 22 and the winding device 25. The suction device 24 is provided between the yarn storage device 23 and the winding device 25. In the present embodiment, the suction device 24 is fixedly provided, but can be provided so as to be slightly movable. For example, the suction device 24 can be provided so as to be movable in a direction of slightly approaching or retreating with respect to the yarn path. In other words, the suction device 24 is provided so as not to be movable like the suction nozzle 84. The suction device 24 is located on the upstream side from the splicing device 82 equipped to the splicing trolley 80 when the splicing trolley 80 performs the work on the spinning unit 2. In a case where the breakage of the fine yarn 5 occurs, the suction device 24 is capable of catching the fine yarn 5 on the side of the winding device 25, in other words, on the side of the package 7, on the upstream side from the splicing device 82.

[0070] The splicing device 82 is provided with a yarn pusher not shown. The fine yarn 5 caught by the suction device 24 is taken into the splicing device 82 by the operation of the yarn pusher. The splicing device 82 can be configured so as to be movable in a direction of approaching or retreating with respect to the yarn path.

[0071] The joint trolley 80 is also provided with a suction nozzle 84. The suction nozzle 84 captures the spun yarn 5 on the side of the package 7 in place of the suction device 24 when the spun yarn 5 is not captured by the suction device 24. The configuration of the joint trolley 80 will be described later.

[0072] In a case where the breakage of the spun yarn 5 occurs, the unit control section 15 decides the use / non-use of the suction device 24 and appropriately controls the suction device 24 based on the decision. Although the details will be described later, the suction device 24 and the suction nozzle 84 are selectively used for the capture of the spun yarn 5 on the side of the package 7. Thus, the use of the suction device 24 means the non-use of the suction nozzle 84, and the non-use of the suction device 24 means the use of the suction nozzle 84.

[0073] The decision of the use / non-use of the suction device 24 is made, for example, in consideration of the reason for the breakage of the spun yarn 5 (the main cause of the spinning interruption). The decision will be described later.

[0074] In a case where the unit control section 15 decides the use of the suction device 24, the suction device 24 is controlled by the unit control section 15 to suck and capture the spun yarn 5 on the side of the package 7 on the downstream side of the yarn storage device 23 (the guide 54). The timing at which the suction device 24 causes the suction air flow to act on the spun yarn 5 is a predetermined timing after the breakage of the spun yarn 5 occurs and before the yarn end of the spun yarn 5 on the side of the package 7 passes through the suction device 24.

[0075] The suction device 24 is provided with a suction pipe 61. A suction port 62 is formed at the front end (one end in the longitudinal direction) of the suction pipe 61. The suction port 62 is opened toward the middle portion of the above-described yarn path of the spinning unit 2. The suction pipe 61 is connected to a negative pressure source such as a blower 113 via a pipe or the like. Thus, the suction air flow can be generated at the suction port 62 (inside the suction pipe 61). Unlike the suction nozzle 84 to be described later, the suction pipe 61 is fixedly provided to the spinning unit 2. Thus, the position of the suction port 62 is constant.

[0076] In the present embodiment, a gate 63 is provided to the suction device 24. The state of the suction device 24 is changed to a suction state or a suction stop state by the gate 63. The gate 63 is disposed, for example, between the suction port 62 and a portion of the suction device 24 on the downstream side of the suction port 62 in the direction of the air flow. The gate 63 can be configured, for example, by an opening and closing mechanism having a plate-like member. The gate 63 can be opened or closed by the control of the unit control section 15. The gate 63 is opened only when necessary, whereby the energy saving of the spinning machine 1 can be achieved. Alternatively, the gate 63 can be omitted from the suction device 24.

[0077] The suction device 24 is provided with a yarn capture detection sensor 64. In the present embodiment, the yarn capture detection sensor 64 is disposed on the immediately downstream side of the suction port 62 of the suction device 24. The yarn capture detection sensor 64 can detect whether or not the suction device 24 successfully captures the fine yarn 5 on the side of the package 7. The yarn capture detection sensor 64 detects the presence or absence of the fine yarn 5 on the immediately downstream side of the suction device 24, and transmits a detection signal to the unit control section 15. The unit control section 15 can detect whether or not the suction device 24 successfully captures based on the detection signal from the yarn capture detection sensor 64. The yarn capture detection sensor 64 can also be disposed inside the suction tube 61.

[0078] The take-up device 25 takes up the fine yarn 5 after the yarn accumulation device 23 to form the package 7. The take-up device 25 is disposed at a position on the downstream side of the yarn accumulation device 23.

[0079] The take-up device 25 is provided with a cradle device 71, a package rotation device 72, and a traversing device 73.

[0080] The cradle device 71 is provided with a pair of cradle arms 74. The cradle device 71 can support the bobbin 7a (further, the package 7) for taking up the fine yarn 5 between the pair of cradle arms 74 so as to be rotatable. The cradle arms 74 can rotate about a fulcrum 75.

[0081] The package rotation device 72 is provided with a take-up drum 76 and a drum drive motor 77. The take-up drum 76 can contact the outer circumferential surface of the bobbin 7a or the package 7. The output shaft of the drum drive motor 77 is coupled to the take-up drum 76 through an appropriate mechanism described later. The take-up drum 76 is driven by the drum drive motor 77, whereby the package 7 can be rotated in the take-up direction. The drum drive motor 77 is configured to be able to rotate in both directions. Thus, the package 7 can also be rotated in the direction opposite to the take-up direction.

[0082] The traversing device 73 is provided with a yarn guide 78 and a traversing drive motor 79. The yarn guide 78 can hook the fine yarn 5 taken up on the package 7. The yarn guide 78 can reciprocate in the width direction of the package 7. The output shaft of the traversing drive motor 79 is coupled to the yarn guide 78 through an appropriate mechanism described later. In a state where the yarn guide 78 holds the fine yarn 5, the fine yarn 5 taken up on the package 7 can be traversed by reciprocally driving the yarn guide 78 by the traversing drive motor 79.

[0083] The take-up device 25 rotates the take-up drum 76 of the package rotation device 72 while reciprocating the yarn guide 78 of the traversing device 73. Thus, the take-up device 25 traverses the fine yarn 5 while taking up the fine yarn 5 on the package 7.

[0084] In this embodiment, each spinning unit 2 is provided with a separate roller drive motor 77. Furthermore, each spinning unit 2 is provided with a separate traverse drive motor 79. Therefore, the take-up roller 76 and the yarn guide 78 can operate independently of the take-up roller 76 and the yarn guide 78 of the other spinning units 2. The detailed configuration of the package rotation device 72 and the traverse device 73 will be described later.

[0085] like Figure 1 As shown, a track 101 is provided on the spinning machine 1. The track 101 is configured to extend along the direction in which the plurality of spinning units 2 are arranged. The splicing carriage 80 is configured to travel on the track 101. Thus, the splicing carriage 80 can move relative to the plurality of spinning units 2.

[0086] The splicing carriage 80 travels to the working position corresponding to the spinning unit 2 where the yarn 5 has been broken, and performs splicing processing in the spinning unit 2. The splicing carriage 80 performs the splicing processing in cooperation with the suction device 24 or the like provided in the spinning unit 2, or using the device equipped on the splicing carriage 80 (such as the suction nozzle 84 described later).

[0087] The connector trolley 80 includes traveling wheels 81, connector device 82, suction pipe 83, suction nozzle 84, and trolley control unit 85.

[0088] The traveling wheels 81 are configured to be driven to rotate via a drive mechanism (e.g., a motor) that is not shown in the figure. Driven by the traveling wheels 81, the jointing trolley 80 can travel relative to the multiple spinning units 2 respectively.

[0089] The suction tube 83 is a component with a tubular portion. An opening is formed at the front end 88 of the suction tube 83. The suction tube 83 is connected to a suitable negative pressure source. Therefore, the front end 88 of the suction tube 83 can generate a suction airflow. The suction tube 83 is supported so that it can rotate. By rotating the suction tube 83, its front end 88 can be moved to a position close to the spinning device 22 (capture position) or a retracted position (standby position). Regarding the splicing process performed after the yarn 5 breaks, the suction tube 83 can capture the yarn 5 on the side of the spinning device 22 by sucking it in when it is close to the spinning device 22.

[0090] The suction nozzle 84 is a component with a tubular portion. An opening is formed at the front end 89 of the suction nozzle 84. The suction nozzle 84 is connected to a suitable negative pressure source. Therefore, the opening at the front end 89 of the suction nozzle 84 can generate a suction airflow. The suction nozzle 84 is supported to be rotatable. By rotating the suction nozzle 84, the opening at its front end 89 can be brought closer to or retracted relative to the take-up device 25. Regarding the splicing process performed after the yarn 5 breaks, the suction nozzle 84 can capture the yarn 5 drawn from the front end 89 on the take-up device 25 side (the package 7 side) at a position close to the take-up device 25.

[0091] By rotating the suction pipe 83 to one side, the front end 88 thereof moves in a direction approaching the spinning device 22. In a state where the front end 88 has approached the spinning device 22, the suction pipe 83 captures the yarn end of the spun yarn 5. The suction pipe 83 is thereafter rotated to the other side. By this, the front end 88 of the suction pipe 83 moves in a direction away from the spinning device 22.

[0092] By rotating the suction nozzle 84 to one side, the front end 89 thereof moves in a direction approaching the winding device 25. In a state where the front end 89 has approached the winding device 25, the suction nozzle 84 captures the spun yarn 5. The suction nozzle 84 is thereafter rotated to the other side. By this, the front end 89 of the suction nozzle 84 moves in a direction away from the winding device 25.

[0093] After the occurrence of the breakage of the spun yarn 5, the joint device 82 performs the joint of the spun yarn 5 on the spinning device 22 side captured by the suction pipe 83 and the spun yarn 5 on the package 7 side captured by the suction device 24 or the suction nozzle 84. In the present embodiment, the joint device 82 is a twist joint device that twists the yarn ends together by a twist-back air flow. The joint device 82 is not limited to the twist joint device described above, and can be configured as a mechanical knotter or the like, for example.

[0094] In a state where the joint trolley 80 has traveled to the spinning unit 2 where the breakage of the spun yarn 5 has occurred and stopped, as shown in FIG. 2, the joint device 82 is positioned at a position on the downstream side from the suction device 24. Further, in a state where the front end 89 of the suction nozzle 84 is retracted with respect to the winding device 25 (state of the solid line of FIG. 3), the joint device 82 is positioned at a position on the downstream side from the front end 89 of the suction nozzle 84. Figure 4 Figure 9

[0095] The trolley control section 85 is configured as a known computer having a Central Processing Unit (CPU), a Read Only Memory (ROM), a Random Access Memory (RAM), and the like, not shown. The trolley control section 85 controls the joint processing performed by the joint trolley 80 by controlling the operation of each of the components equipped in the joint trolley 80.

[0096] The joint trolley 80 normally stands by at an appropriate position on the track 101. When the breakage of the spun yarn 5 occurs in a certain spinning unit 2, the joint trolley 80 moves to the spinning unit 2 where the breakage of the spun yarn 5 has occurred.

[0097] Next, the separate use of the suction device 24 and the suction nozzle 84 in the case of the joint processing in the spinning unit 2 will be described.

[0098] ​​After the spun yarn 5 is broken at the yarn supply device (spinning device 22) and the package 7, the joint processing is performed near the timing at which the spinning device 22 starts the interrupted spinning. In the present embodiment, there are two kinds of actions of the joint processing, which are selected alternatively.

[0099] The first action is such that the spun yarn 5 on the take-up device 25 side is caught by the suction device 24, the joint device 82 becomes a state in which the spun yarn 5 can be taken in, and the joint is performed by the joint device 82. Hereinafter, this action is sometimes referred to as "fixedly caught joint". Figure 6 The second action is such that the spun yarn 5 on the take-up device 25 side is caught by the suction nozzle 84, the suction nozzle 84 guides the spun yarn 5 so that the joint device 82 can take in the spun yarn 5, and the joint is performed by the joint device 82. Hereinafter, this action is sometimes referred to as "movably caught joint".

[0100] The second action is such that the spun yarn 5 on the take-up device 25 side is caught by the suction nozzle 84, the suction nozzle 84 guides the spun yarn 5 so that the joint device 82 can take in the spun yarn 5, and the joint is performed by the joint device 82. Hereinafter, this action is sometimes referred to as "movably caught joint". Figure 9

[0101] In either action, the spun yarn 5 on the spinning device 22 side is caught by the suction pipe 83, and the spun yarn 5 is guided by the suction pipe 83 so that the joint device 82 can take in the spun yarn 5.

[0102] The unit control section 15 decides which of the fixedly caught joint and the movably caught joint is performed based on various main reasons in the case of interrupting the spinning.

[0103] The fixedly caught joint is different from the movably caught joint in that the guiding action of the suction nozzle 84 is not needed. Thus, if energy saving is considered, the fixedly caught joint is preferred to be performed.

[0104] For example, consider the case where the yarn monitoring device 47 detects a yarn defect, and the spun yarn 5 is cut off to remove the yarn defect. Assume that in the case of performing the fixedly caught joint, the yarn end of the spun yarn 5 on the package 7 side is caught by the suction device 24 in a state in which the rotation of the package 7 needs to be stopped. However, the package 7 is rotating at a high speed at the time when the yarn monitoring device 47 detects the yarn defect, and thus even if the rotation stop control of the package 7 is started immediately, a certain length of the spun yarn 5 is inevitably wound onto the package 7 before the rotation of the package 7 actually stops.

[0105] In the case where the yarn accumulation amount of the yarn accumulation roller 51 is equal to or more than a prescribed amount, there is a state in which even if the spun yarn 5 is pulled out from the yarn accumulation roller 51 from the time when the rotation stop control of the package 7 is started immediately to the time when the package 7 actually stops, the spun yarn 5 can be caught by the suction device 24. The state in which the spun yarn 5 can be caught by the suction device 24 is in other words a state in which the spun yarn 5 is accumulated in the yarn accumulation roller 51 even if a little. In this case, the unit control section 15 decides to perform the fixedly caught joint.

[0106] ​In a case where the yarn accumulation amount of the yarn accumulation roller 51 is smaller than the prescribed amount, the spun yarn 5 cannot be captured by the suction device 24 in time, and the end of the yarn passes through the suction device 24 due to the rotation until the winding 7 actually stops. In this case, the unit control section 15 decides to perform the moving capture joint. Even in a case where the spun yarn 5 is cut off at a position further downstream than the suction device 24 due to an abnormal tension or the like occurring in the winding of the winding 7, the unit control section 15 decides to perform the moving capture joint.

[0107] As for the judgment of which of the fixed capture joint and the moving capture joint to perform, the above-described explanation is an example, and the judgment can be made by other criteria.

[0108] Next, the operation of each part at the time of jointing when the spinning is interrupted by the breakage of the spun yarn 5 in the state of Figure 2 will be described. Hereinafter, the fixed capture joint will be described by way of example based on a case where the spun yarn 5 is cut off based on the detection result of the yarn monitoring device 47.

[0109] First, the unit control section 15 stops the yarn feeding of the yarn feeding device (spinning device 22) based on the yarn defect detection signal input from the yarn monitoring device 47. The spun yarn 5 is cut off by the stop of the yarn feeding of the yarn feeding device. As a result, as shown in FIG. 6, the breakage of the spun yarn 5 occurs. The yarn defect detected by the yarn monitoring device 47 is included in the spun yarn 5 on the winding 7 side. Figure 3

[0110] The unit control section 15 transmits a joint request signal to the carriage control section 85 at an appropriate timing after the yarn monitoring device 47 detects the yarn defect. The carriage control section 85 that receives the joint request signal causes the joint carriage 80 to travel and stop after the spinning unit 2 where the breakage of the spun yarn 5 has occurred.

[0111] The unit control section 15 decides which of the suction device 24 and the suction nozzle 84 to use for the joint immediately after the yarn monitoring device 47 detects the yarn defect. In this example, the unit control section 15 decides to perform the fixed capture joint, in other words, to use the suction device 24.

[0112] In a case where the fixed capture joint is performed, the unit control section 15 performs deceleration control of the rotation of the winding 7. As a result, the speed of the portion near the end of the spun yarn 5 on the winding 7 side when it passes through the suction device 24 becomes low, and thus the capture by the suction device 24 is facilitated. The deceleration control of the rotation of the winding 7 can be started immediately after the yarn defect is detected or after the interruption of the spinning, or can be started at the timing when the yarn accumulation amount detection sensor 56 detects that the accumulation amount of the spun yarn 5 is equal to or less than the prescribed amount. The rotation of the winding 7 can be temporarily completely stopped after the yarn defect is detected or after the interruption of the spinning, and then the winding can be restarted at a low speed.​

[0113] When the take-up device 25 is taken up from the state Figure 3 , the yarn 5 remaining on the yarn accumulation roller 51 of the yarn accumulation device 23 is pulled out, and the accumulation amount of the yarn 5 on the yarn accumulation roller 51 is reduced. The unit control section 15 monitors the detection signal of the yarn accumulation amount detection sensor 56.

[0114] The unit control section 15 opens the closed gate 63 at a timing slightly before the yarn 5 departs from the yarn accumulation device 23, and causes the suction device 24 to start suction. For example, the timing can be set to a timing after the take-up by a prescribed time from a case where the yarn accumulation amount detection sensor 56 detects that the accumulation amount of the yarn 5 is below a prescribed amount.

[0115] After that, during the process in which the yarn 5 on the package 7 side is taken up to the package 7, at a timing at which the yarn end of this yarn 5 is in a region that can be captured by the suction device 24, the unit control section 15 causes the take-up of the take-up device 25 to stop. For example, the stop timing of the take-up of the take-up device 25 can be set to a timing that is almost the same as a timing at which the yarn end of the yarn 5 remaining on the yarn accumulation roller 51 departs from the yarn accumulation roller 51 and departs from the guide 54.

[0116] As a result, as shown in Figure 4 , the yarn 5 can be captured by being sucked from the suction port 62 by the suction device 24. At this time, the yarn end of the yarn 5 is located inside the suction tube 61. The state in which the yarn 5 is sucked by the suction device 24 is shown in Figure 4 . The state in which the joint trolley 80 reaches the spinning unit 2 according to the above joint request signal is shown in

[0117] The unit control section 15 judges whether or not the capture by the suction device 24 was successful based on the detection result of the yarn capture detection sensor 64. A case where the capture by the suction device 24 is judged to have failed will be described later.

[0118] In a case where the capture by the suction device 24 is judged to have succeeded, the unit control section 15 reverses the package 7 as necessary and stops again. In a case where the yarn defect contained in the yarn 5 on the package 7 side is long, in order to remove the yarn defect, it is necessary to unwind the yarn 5 from the package 7 and cause the suction device 24 to suck the yarn 5. After that, the unit control section 15 judges whether or not the joint trolley 80 has reached the spinning unit 2, and stands by until the joint trolley 80 reaches the spinning unit 2 in a case where the joint trolley 80 has not reached the spinning unit 2.

[0119] In a state where the joint trolley 80 stops at the operation position corresponding to the spinning unit 2, the suction port 62 of the suction device 24 is located at a position that is upstream of the joint device 82. Thus, when the joint trolley 80 reaches, as shown in Figure 4 , the yarn 5 on the package 7 side held by the suction device 24 faces the joint device 82 of the joint trolley 80.

[0120] After the joint trolley 80 is stopped, the trolley control section 85 controls the joint trolley 80 so that the suction pipe 83 moves to a position where the spun yarn 5 on the spinning device 22 side can be captured as shown by the dot-and-dash line. Figure 5 At almost the same time, the unit control section 15 causes the yarn supply device to resume the supply of the spun yarn 5. In addition, the rotation of the yarn storage roller 51 and the hank member 53 is resumed.

[0121] The trolley control section 85 causes the spun yarn 5 on the spinning device 22 side captured by the suction pipe 83 to be guided to the joint device 82 below as shown by the solid line. Figure 5 In conjunction therewith, the spun yarn 5 pulled out from the spinning device 22 is hooked by the hank member 53, and the spun yarn 5 is wound on the yarn storage roller 51 by the rotating hank member 53 as shown by the solid line. Figure 5

[0122] When the amount of the spun yarn 5 stored on the yarn storage roller 51 increases to a certain extent Figure 6 , the trolley control section 85 causes the joint device 82 to operate, and performs the joint of the spun yarn 5 on the winding device 25 side attracted by the attraction device 24 and the spun yarn 5 on the spinning device 22 side. In the joint, the spun yarn 5 is continuously supplied from the yarn supply device, but this spun yarn 5 is stored by the yarn storage device 23.

[0123] In the joint, the excess spun yarn 5 is cut in the joint device 82. By this cutting, the portion of the spun yarn 5 on the package 7 side in which a yarn defect detected by the yarn monitoring device 47 is removed. The excess spun yarn 5 cut is sucked by the attraction device 24 or the suction pipe 83 and discarded.

[0124] At almost the same time as the joint is completed, the winding device 25 starts to be driven, and the winding of the package 7 by the winding device 25 is resumed. The gate 63 is closed at an appropriate timing after the joint is completed. In this way, the spinning unit 2 returns to the normal state. Figure 2

[0125] Next, the cross direction position in the winding device 25 in the state where the spun yarn 5 on the package 7 side is captured by the attraction device 24 for the above-mentioned fixed-capture joint will be described.

[0126] In Figure 7 , a front view corresponding to the state of Figure 4 is shown. In the state where the spun yarn 5 on the package 7 side is captured by the attraction device 24, the rotation of the package 7 is stopped at an appropriate timing. The cross device 73 performs the cross of the spun yarn 5 until the rotation of the package 7 is stopped, and is stopped at the same time as the rotation of the package 7 is stopped. The cross direction position of the spun yarn 5 on the package 7 side at the timing when the rotation of the package 7 is stopped is not fixed.

[0127] After the joint trolley 80 reaches the spinning unit 2, as shown in​​Figure 7 As shown by the solid line, the suction tube 83 is in the standby position after leaving the spinning device 22. Then, the suction tube 83 moves towards the spinning device 22 to capture the yarn 5 supplied by the spinning device 22. Figure 7 The dotted line indicates the movement of the capture position.

[0128] When moving from the standby position to the capture position, the suction tube 83 passes slightly to the side of one side of the connector device 82. Therefore, in the lateral movement position of the yarn 5, as... Figure 7 When the solid line indicates that the tube 83 is located in the end region of the transverse width, the rotating tube 83 interferes with the yarn 5.

[0129] A pair of splicing slits (not shown) are formed in the splicing device 82. The yarn 5 from the package 7 side and the yarn 5 from the spinning device 22 side are fed into each splicing slit for splicing. The splicing slits are configured to correspond to the vicinity of the center of the traverse width. Therefore, when the traverse position of the yarn 5 from the package 7 side is near the end of the traverse width, it is difficult to feed the yarn 5 into the splicing slits via the splicing device 82.

[0130] Therefore, as Figure 8 As shown, the unit control unit 15 of this embodiment controls the movement of the yarn guide 78 of the traverse device 73, so that the yarn 5 on the package 7 side approaches the central region in the winding width direction of the package 7.

[0131] Hereinafter, the action of moving the portion of the yarn 5 held between the package 7 and the suction device 24 near the package 7 toward the central region in the winding width direction of the package 7 is sometimes referred to as the yarn-pulling action. By controlling the yarn-pulling action, the yarn 5 on the package 7 side can be smoothly picked up and spliced ​​by the splicing device 82. Therefore, splicing errors can be reduced.

[0132] This yarn-pulling control can also be described as a control that causes the yarn 5 between the package 7 and the suction device 24 to move from the standby position to the capture position via the suction tube 83. Through this control, interference can be prevented between the suction tube 83, which reciprocates to capture the yarn 5 on the spinning device 22 side and guide it to the splicing device 82, and the yarn 5 on the package 7 side.

[0133] The position of the yarn 5 in the winding width direction of the package 7 can be adjusted (in other words, yarn-pulling control) at any time from when the yarn 5 is captured by the suction device 24 to when the suction tube 83 begins to reciprocate. For example, if the interference between the yarn 5 and the suction tube 83 can be resolved by changing the movement trajectory of the suction tube 83, yarn-pulling control can also be performed immediately before the splicing action of the splicing device 82.

[0134] When the yarn guide 78 of the traverse device 73 moves the yarn 5 on the side of the package 7, the rotation of the package 7 stops. However, the package rotation device 72 can also rotate the package 7 slightly in the winding direction in conjunction with the movement of the yarn guide 78.

[0135] Next, the situation where spinning is interrupted and the unit control unit 15 decides to move the capture connector will be explained.

[0136] When the yarn 5 breaks, the unit control unit 15 continues the rotation of the package 7 if it is determined to perform a moving capture joint. As a result, the yarn end of the yarn 5 on the package 7 side is wound onto the package 7. If the moving capture joint is performed, the unit control unit 15 controls the gate 63 of the suction device 24 to remain closed. Alternatively, if the gate 63 is open, the unit control unit 15 controls the gate 63 to close. Therefore, the yarn end of the yarn 5 on the package 7 side is not sucked into the suction port 62 of the suction device 24. Afterward, the yarn end of the yarn 5 on the package 7 side moves towards or near the outer peripheral surface of the package 7.

[0137] Then, the unit control unit 15 determines whether the splicing trolley 80 has arrived at the spinning unit 2, and if it has not arrived, it will standby until it arrives.

[0138] When the connector trolley 80 reaches the working position relative to the spinning unit 2, the suction nozzle 84 is... Figure 9 The dotted line indicates proximity to the take-up device 25. In this state, the take-up rotation device 72 of the take-up device 25 rotates the roll 7 in the opposite direction to the take-up direction. As a result, the suction nozzle 84 can capture the yarn 5 on the side of the roll 7. The reverse rotation of the roll 7 continues until all the portion of the yarn 5 containing yarn defects on the side of the roll 7 is attracted by the suction nozzle 84. Afterward, the suction nozzle 84 retracts from the take-up device 25. Consequently, the yarn 5 on the side of the roll 7 is guided to the splicing device 82. The operation of the splicing carriage 80, except for this, is the same as the fixed capture splice described above. Figure 9 The diagram shows a connection made via connector 82.

[0139] Although a fixed capture connector was attempted, for some reason, the yarn 5 on the package 7 side sometimes failed to be captured by the suction device 24. The failure to capture the yarn 5 can be detected based on the yarn capture detection sensor 64. In the event that the suction device 24 fails to capture the yarn 5, the unit control unit 15 decides to switch to moving the capture connector. Before using the suction nozzle 84, the winding device 25 further winds up the yarn 5 on the package 7 side. As a result, the yarn end that failed to be captured by the suction device 24 moves towards or near the outer peripheral surface of the package 7, thus enabling the suction nozzle 84 to reliably capture the yarn 5 on the package 7 side.

[0140] Next, the detailed configuration of the package rotating device 72 and the traversing device 73 will be described with reference to Figure 10 The following configuration is an example, and a device that has been appropriately changed can also be used.

[0141] The spinning unit 2 of the present embodiment is provided with a take-up traversing device 151 that integrates the package rotating device 72 and the traversing device 73. The take-up traversing device 151 is provided with a frame 152 in the shape of an inverted U. Inside the frame 152, a take-up drum 76, a drum drive motor 77, and a traversing drive motor 79 are arranged.

[0142] Both ends of a drum shaft 153 are rotatably supported by the frame 152. The take-up drum 76 described above is fixed to the drum shaft 153.

[0143] An output shaft of the drum drive motor 77 is arranged in parallel with respect to the drum shaft 153. A first pulley 161 is fixed to the output shaft of the drum drive motor 77. A second pulley 162 is fixed to the drum shaft 153 on the axial direction side of the take-up drum 76. A belt 163 is wound around the first pulley 161 and the second pulley 162, and the two pulleys 161 and 162 are connected by the belt 163. The first pulley 161, the second pulley 162, and the belt 163 are arranged inside the frame 152.

[0144] An output shaft of the traversing drive motor 79 is arranged substantially perpendicularly with respect to the drum shaft 153, and protrudes upward from the frame 152. A drive pulley 171 is fixed to the output shaft of the traversing drive motor 79. A driven pulley 172 and a driven pulley 173 are rotatably supported on the upper portion of the frame 152. The rotation axes of the driven pulleys 172 and 173 are parallel with respect to the rotation axis of the drive pulley 171. A belt 174 is wound around the drive pulley 171 and the driven pulleys 172 and 173, and the three pulleys are connected by the belt 174.

[0145] A rail 155 that is linearly elongated is fixed to the frame 152 in a direction parallel with the axis of the take-up drum 76. The yarn guide 78 described above is supported by the rail 155. The yarn guide 78 is movable in the longitudinal direction of the rail 155. The portion of the belt 174 that is stretched between the two driven pulleys 172 and 173 is parallel with respect to the rail 155. The yarn guide 78 is fixed to the portion of the belt 174 that is stretched between the two driven pulleys 172 and 173.

[0146] The traversing drive motor 79 can be configured as a servo motor, for example. By alternately rotating the traversing drive motor 79 in the forward and reverse directions, the yarn guide 78 can be linearly reciprocally driven along the axis of the take-up drum 76.

[0147] Thus, the take-up traverse device 151 is configured to transmit the driving force of the drum driving motor 77 to the take-up drum 76 through the belt 163 and to transmit the driving force of the traverse driving motor 79 to the guide 78 through the belt 174. These belts 163, 174 can be configured as toothed belts, for example.

[0148] The housings of the drum driving motor 77 and the traverse driving motor 79 are each configured at a height that overlaps the upper and lower directions of the take-up drum 76. The housings of the drum driving motor 77 and the traverse driving motor 79 are arranged along the axis of the take-up drum 76. The belt 174 that transmits the driving force of the traverse driving motor 79 to the guide 78 is configured at a position that is higher than the housings of the two motors and higher than the take-up drum 76. Thus, a compact configuration can be achieved.

[0149] As described above, the spinning machine 1 of the present embodiment is provided with the spinning device 22, the take-up device 25, the joint device 82, the suction device 24, the suction pipe 83, and the unit control section 15. The spinning device 22 can supply the spun yarn 5. The take-up device 25 takes up the spun yarn 5 supplied from the spinning device 22 while traversing the spun yarn 5 to form the package 7. When the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the joint device 82 performs jointing of the spun yarn 5 on the spinning device 22 side and the spun yarn 5 on the package 7 side. When the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the suction device 24 can catch the spun yarn 5 on the package 7 side. When the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the suction pipe 83 can catch the spun yarn 5 on the spinning device 22 side. The unit control section 15 controls the take-up device 25. The spinning machine 1 is provided with a plurality of spinning units 2. Each spinning unit 2 is provided with the spinning device 22 and the take-up device 25. The take-up device 25 of each spinning unit 2 is provided with the package rotation device 72 and the traverse device 73. The package rotation device 72 is driven independently for each spinning unit 2 to rotate the package 7. The traverse device 73 is driven independently for each spinning unit 2 and has the guide 78 that traverses the spun yarn 5 wound on the package 7. After the spun yarn 5 is broken between the spinning device 22 and the take-up device 25 and before jointing is performed by the joint device 82, in a state in which the spun yarn 5 is continuous between the suction device 24 and the take-up device 25, the unit control section 15 controls the operation of at least one of the package rotation device 72 and the traverse device 73 to position the portion of the spun yarn 5 that is close to the package 7 in the central region in the winding width direction of the package 7.

[0150] Thus, after the spun yarn 5 is broken between the spinning device 22 and the take-up device 25 and before jointing is performed by the joint device 82, the spun yarn 5 on the package 7 side can be substantially restricted regardless of the complex configuration. Thus, jointing can be performed smoothly.

[0151] In the spinning machine 1 of the present embodiment, after the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, and before the splicing by the splicing device 82, as a preparatory operation for the splicing, the unit control section 15 performs the thread guiding control of causing the traversing device 73 to operate to bring the spun yarn 5 on the package 7 side close to the central region in the winding width direction of the package 7.

[0152] Thus, after the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, and before the splicing by the splicing device 82, the substantial restriction of the spun yarn 5 on the package 7 side can be achieved regardless of the complicated configuration. Thus, the splicing can be smoothly performed.

[0153] In the spinning machine 1 of the present embodiment, the traversing device 73 is provided with a traversing drive motor 79 that reciprocally moves the thread guide 78. In the thread guiding control, the unit control section 15 moves the thread guide 78 by controlling the traversing drive motor 79.

[0154] Thus, the spun yarn 5 on the package 7 side can be physically guided by the thread guide 78. Thus, before the splicing by the splicing device 82, the spun yarn 5 on the package 7 side can be reliably restricted.

[0155] In the spinning machine 1 of the present embodiment, by the thread guiding control, the thread guide 78 is moved from the end region to the central region in the winding width of the package 7.

[0156] In the case where the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the traversing device 73 temporarily slows down and stops the thread guide 78. In the thread guiding control that is started thereafter, the traversing device 73 moves the thread guide 78.

[0157] Thus, before the splicing by the splicing device 82, the spun yarn 5 on the package 7 side can be reliably moved to the central region in the winding width of the package 7.

[0158] The spinning machine 1 of the present embodiment is provided with a splicing trolley 80 that can travel with respect to a plurality of spinning units 2. The splicing trolley 80 is provided with a suction nozzle 84 and a splicing device 82.

[0159] Thus, the configuration in which the spun yarn 5 on the package 7 side can hardly interfere with the suction nozzle 84 can be achieved. Further, the spun yarn 5 can be smoothly taken in by the splicing device 82 to perform the splicing.

[0160] The spinning machine 1 of this embodiment is provided with a spinning device 22, a take-up device 25, a joint device 82, a suction device 24, and a suction pipe 83. The spinning device 22 is capable of supplying a spun yarn 5. The take-up device 25 takes up the spun yarn 5 supplied from the spinning device 22 while traversing the spun yarn 5 to form a package 7. When the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the joint device 82 performs jointing of the spun yarn 5 on the spinning device 22 side and the spun yarn 5 on the package 7 side. When the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the suction device 24 is capable of catching the spun yarn 5 on the package 7 side. When the spun yarn 5 is broken between the spinning device 22 and the take-up device 25, the suction pipe 83 is capable of catching the spun yarn 5 on the spinning device 22 side. The suction pipe 83 is capable of moving between a catching position and a standby position. At the catching position, the suction pipe 83 catches the spun yarn 5 supplied from the spinning device 22. The standby position is a position on the downstream side of the joint device 82 in the yarn travel direction. After the supply of the spun yarn 5 is interrupted in the spinning device 22, the suction device 24 catches the spun yarn 5 on the package 7 side on the upstream side of the joint device 82 in the yarn travel direction, and the suction pipe 83 is in a state where it stands by at the standby position, and the control (retreat control) of bringing the spun yarn 5 on the package 7 side close to the central region in the winding width direction of the package 7 is performed. By this retreat control, the spun yarn 5 between the package 7 and the suction device 24 retreats from the path in which the suction pipe 83 moves from the standby position to the catching position.

[0161] Thus, in the operation performed during the period after the spun yarn 5 is broken between the spinning device 22 and the take-up device 25 and before jointing is performed by the joint device 82, even if the suction pipe 83 moves in order to catch the spun yarn 5 on the spinning device 22 side, it is possible to prevent the suction pipe 83 from interfering with the spun yarn 5 on the package 7 side.

[0162] The spinning machine 1 of this embodiment is provided with a plurality of spinning units 2 and a joint trolley 80. The joint trolley 80 is capable of traveling with respect to the plurality of spinning units 2. Each of the spinning units 2 is provided with a spinning device 22 and a take-up device 25. The joint trolley 80 is provided with a suction pipe 83 and a joint device 82.

[0163] Thus, it is possible to achieve a simple configuration.

[0164] Next, a first modified example of the yarn knock control will be described. The yarn knock control of the first modified example is to rotate the package 7 in the take-up direction in a state where the spun yarn 5 is detached from the guide 78, thereby bringing the spun yarn 5 on the package 7 side close to the central region in the winding width direction of the package 7.

[0165] Specifically, the unit control section 15 detaches the spun yarn 5 on the package 7 side from the guide 78 by moving the guide 78 in a state where the spun yarn 5 is supplied from the guide 78. Figure 7 For example, the unit control section 15 detaches the spun yarn 5 on the package 7 side from the guide 78 by moving the guide 78 in a state where the spun yarn 5 is supplied from the guide 78. Figure 4The cradle arm 74 is rotated around the pivot 75, causing the package 7 to temporarily separate from the traverse device 73, thereby allowing the yarn 5 to be removed from the yarn guide 78. A suitable actuator, such as a cylinder, can be used as the mechanism for rotating the cradle arm 74. After the yarn 5 is removed from the yarn guide 78, the cradle arm 74 is rotated at an appropriate timing, causing the package 7 to re-engage with the take-up roller 76. Alternatively, a removal component can be provided for removing the yarn 5 from the yarn guide 78, through which the yarn 5 is removed from the yarn guide 78.

[0166] After the yarn 5 is removed from the yarn guide 78, the traverse device 73 stops the yarn guide 78 at a position where it is disengaged from its normal traverse width. Then, the take-up device 25 rotates the package 7 in the take-up direction while the traverse of the yarn guide 78 is stopped.

[0167] like Figure 7 As shown, the spinning unit 2 includes a yarn guide 91 for guiding the yarn 5. The yarn guide 91 is positioned downstream of the suction device 24 and upstream of the package 7. The yarn guide 91 has a known configuration with a guiding recess for guiding the yarn 5. The yarn guide 91 is positioned upstream of the yarn guide 78 of the traverse device 73 and upstream of the splicing device 82.

[0168] The yarn guide 91 is positioned corresponding to the center of the traverse width of the traverse device 73. Therefore, when the package 7 is rotated in the winding direction while tension is applied to the yarn 5 on the package 7 side via the suction device 24, the position of the yarn 5 on the package 7 side gradually approaches the area corresponding to the yarn guide 91, that is, the central area in the winding width direction. In this way, the yarn pulling action can be realized.

[0169] In the first variation, it is necessary that the yarn 5 will not detach from the suction device 24 even when the package 7 is rotated in the winding direction. Furthermore, it is necessary that even when the package 7 is rotated in the winding direction, portions of the yarn 5 containing yarn defects will not be pulled out of the suction device 24 and reach the splicing device 82. Therefore, a sufficient length of yarn 5 must be pre-captured by the suction device 24 before the yarn-pulling operation. Alternatively, the package 7 can be rotated to a certain extent in the opposite direction before rotating in the winding direction, thereby increasing the length of the yarn 5 captured by the suction device 24.

[0170] As explained above, in this modified example, in the yarn take-up control, the package rotation device 72 stops the package 7 after it has rotated in the take-up direction. After the rotation of the package 7 stops, the coupling device 82 performs coupling.

[0171] Therefore, before splicing by splicing device 82, the yarn 5 on the side of the roll 7 can be substantially restricted by the roll rotation device 72 without using traverse device 73.

[0172] Next, a second modification of the thread guiding control will be described. The thread guiding control of the second modification rotates the package 7 in the direction opposite to the take-up direction in the state where the fine yarn 5 is detached from the thread guide 78, thereby bringing the fine yarn 5 on the package 7 side close to the central region in the width direction of the package 7.

[0173] In the present modification, instead of rotating the package 7 in the take-up direction as in the first modification, the package 7 is rotated in the opposite direction. In the present modification, the traversing device 73 also does not traverse the fine yarn 5.

[0174] The package 7 is formed by winding the fine yarn 5 while traversing the fine yarn 5 by the traversing device 73. Thus, when the package 7 is rotated in the opposite direction in the state where the fine yarn 5 on the package 7 side is subjected to tension by the suction device 24, the position of the fine yarn 5 unwound from the package 7 reciprocates in the winding width direction in a manner that runs in the opposite direction to the traverse at the time of take-up.

[0175] In the present modification, a yarn detection sensor that detects the fact that the fine yarn 5 moves to the central region in the winding width direction of the package 7 is provided. Although not shown, the yarn detection sensor is, for example, disposed at a position directly below the thread guide 91 and can be configured to detect the fine yarn 5 by non-contact detection. The take-up device 25 rotates the package 7 in the opposite direction, and at the timing when the fine yarn 5 that reciprocates as described above is detected by the yarn detection sensor, the rotation of the package 7 is immediately stopped. In this way, the thread guiding action can be achieved.

[0176] As described above, the spinning machine 1 of the present modification is provided with the yarn detection sensor that can detect the fine yarn 5 located in the central region in the winding width direction of the package 7. In the thread guiding control, the package rotation device 72 rotates the package 7 in the direction opposite to the take-up direction, and when the yarn detection sensor detects the fine yarn 5 that reciprocates in conjunction with the unwinding from the package 7, the rotation of the package 7 in the opposite direction is stopped.

[0177] Thus, before the joint by the joint device 82, the fine yarn 5 on the package 7 side can be substantially restricted by the package rotation device 72 and the yarn detection sensor without using the traversing device.

[0178] The above describes the preferred embodiment of the present application and the modifications, but the above-described configurations can be changed, for example, as follows. The changes can be made individually or a plurality of changes can be made arbitrarily in combination.

[0179] The traverse drive motor 79 can be a DC brushless motor or a step motor with an encoder instead of a servo motor.

[0180] In the above description, the fine yarn 5 is detected by the yarn detection sensor, but the yarn detection sensor can be omitted. In this case, the thread guiding control is performed by the package rotation device 72. Figure 10The cross motion device 73 has two driven pulleys 172, 173 in the above embodiment, but the number of driven pulleys is arbitrary. For example, the yarn 174 can be wound around one driving pulley and one driven pulley to form an oval shape.

[0181] The guide 78 can be attached to an arm member that is connected to the output shaft of the cross motion drive motor 79, and the guide 78 is installed at the front end of the rotating arm member. In this case, the guide 78 performs a circular arc-like reciprocating motion.

[0182] The drum drive motor 77 can be built into the take-up drum 76. In this case, the drum drive motor 77 is configured as, for example, an outer rotor type motor.

[0183] The spinning machine 1 can be a free end spinning machine. The above-described embodiment and modified examples of the yarn transfer control can be performed in an automatic winder instead of a spinning machine. In the automatic winder, a device that unwinds yarn from a supply bobbin corresponds to the yarn supply device.

[0184] A delivery roller that conveys the yarn 5 while sandwiching the yarn 5 can be provided between the spinning device 22 and the yarn storage roller 51.

[0185] The joint trolley 80 can be omitted, and each spinning unit 2 is provided with a joint device 82 and a suction pipe 83.

[0186] The above-described embodiment and modified examples of the yarn transfer control do not need to be performed every time before the suction action of the suction pipe 83. For example, in a case where it is detected by a suitable mechanism that there is no possibility that the suction pipe 83 interferes with the yarn 5, the yarn transfer control can be omitted.

Claims

1. A yarn winding machine, characterized in that, have: A yarn feeding device is capable of supplying yarn; The winding device winds up the yarn supplied from the yarn supply device while moving it laterally to form a package; A splicing device that splices the yarn on the yarn supply side to the yarn package side when the yarn is disconnected between the yarn supply device and the take-up device. The first capturing device is fixedly installed and is capable of capturing the yarn on the package side when the yarn is broken between the yarn supply device and the take-up device. The second capturing device is capable of capturing the yarn on the side of the yarn supply device when the yarn breaks between the yarn supply device and the take-up device; and The control unit controls the aforementioned winding device. Equipped with multiple processing units, Each processing unit is equipped with the aforementioned yarn feeding device and the aforementioned take-up device. The above-mentioned winding device of each processing unit includes: The roll rotation device is independently driven for each processing unit to rotate the roll; and The traversing device, driven independently for each processing unit, has a yarn guide that traverses the yarn wound on the package. After the yarn is disconnected between the yarn supply device and the take-up device and before it is joined by the splicing device, while the yarn is continuous between the first capture device and the take-up device, the control unit controls the operation of at least one of the package rotation device and the traverse device so that the portion of the yarn close to the package is located in the central region of the package in the winding width direction.

2. The yarn winding machine according to claim 1, characterized in that, After the yarn is disconnected between the yarn supply device and the take-up device, and before it is joined by the jointing device, as a preparatory action for the jointing, the control unit performs yarn-pulling control by actuating at least one of the package rotation device and the traverse device to bring the yarn on the package side closer to the central region of the package in the winding width direction.

3. The yarn winding machine according to claim 2, characterized in that, The aforementioned traverse device includes a traverse drive motor that causes the yarn guide to reciprocate. In the above-mentioned yarn-pulling control, the control unit controls the traverse drive motor to move the yarn guide.

4. The yarn winding machine according to claim 3, characterized in that, In the above-mentioned yarn-pulling control, the yarn guide moves from the end region of the winding width of the package to the central region.

5. The yarn winding machine according to claim 2, characterized in that, In the above-described yarn-pulling control, the package rotation device causes the package to stop rotating in the take-up direction. After the rotation of the aforementioned roll stops, the aforementioned jointing device performs the jointing.

6. The yarn winding machine according to claim 2, characterized in that, The aforementioned yarn take-up machine is equipped with a yarn detection sensor, which is capable of detecting yarn located in the central region of the winding width direction of the package. In the above-described yarn-pulling control, the package rotation device rotates the package in the opposite direction to the winding direction. When the yarn detection sensor detects the yarn reciprocating along with the unwinding of the package, the rotation of the package in the opposite direction is stopped.

7. The yarn winding machine according to claim 1, characterized in that, The above-mentioned yarn supply device includes: A drawing device is used to draw fiber bundles; and The spinning device applies a twisting airflow to the fiber bundle that has been stretched by the aforementioned drafting device, thereby twisting it to generate yarn.

8. The yarn winding machine according to claim 2, characterized in that, The above-mentioned yarn supply device includes: A drawing device is used to draw fiber bundles; and The spinning device applies a twisting airflow to the fiber bundle that has been stretched by the aforementioned drafting device, thereby twisting it to generate yarn.

9. The yarn winding machine according to claim 3, characterized in that, The above-mentioned yarn supply device includes: A drawing device is used to draw fiber bundles; and The spinning device applies a twisting airflow to the fiber bundle that has been stretched by the aforementioned drafting device, thereby twisting it to generate yarn.

10. The yarn winding machine according to claim 4, characterized in that, The above-mentioned yarn supply device includes: A drawing device is used to draw fiber bundles; and The spinning device applies a twisting airflow to the fiber bundle that has been stretched by the aforementioned drafting device, thereby twisting it to generate yarn.

11. The yarn winding machine according to claim 5, characterized in that, The above-mentioned yarn supply device includes: A drawing device is used to draw fiber bundles; and The spinning device applies a twisting airflow to the fiber bundle that has been stretched by the aforementioned drafting device, thereby twisting it to generate yarn.

12. The yarn winding machine according to claim 6, characterized in that, The above-mentioned yarn supply device includes: A drawing device is used to draw fiber bundles; and The spinning device applies a twisting airflow to the fiber bundle that has been stretched by the aforementioned drafting device, thereby twisting it to generate yarn.

13. The yarn winding machine according to any one of claims 1 to 12, characterized in that, A yarn storage device for storing yarn is provided between the aforementioned yarn supply device and the aforementioned winding device.

14. The yarn winding machine according to claim 13, characterized in that, The first capturing device is fixedly installed between the yarn storage device and the winding device.

15. The yarn winding machine according to any one of claims 1 to 12, characterized in that, It has a work trolley capable of traveling relative to multiple of the above-mentioned processing units. The aforementioned work trolley is equipped with the aforementioned second capture device and the aforementioned connector device.

16. The yarn winding machine according to claim 13, characterized in that, It has a work trolley capable of traveling relative to multiple of the above-mentioned processing units. The aforementioned work trolley is equipped with the aforementioned second capture device and the aforementioned connector device.

17. The yarn winding machine according to claim 14, characterized in that, It has a work trolley capable of traveling relative to multiple of the above-mentioned processing units. The aforementioned work trolley is equipped with the aforementioned second capture device and the aforementioned connector device.

18. A yarn winding machine, characterized in that, have: A yarn feeding device is capable of supplying yarn; The winding device winds up the yarn supplied from the yarn supply device while moving it laterally to form a package; A splicing device that splices the yarn on the yarn supply side to the yarn package side when the yarn is disconnected between the yarn supply device and the take-up device. The first capturing device is fixedly installed and is capable of capturing the yarn on the package side when the yarn breaks between the yarn supply device and the take-up device; and The second capturing device is capable of capturing the yarn on the yarn supply device side when the yarn breaks between the yarn supply device and the take-up device. The second capturing device described above is movable between a capturing position for capturing yarn supplied from the yarn supply device and a standby position downstream of the splicing device in the yarn travel direction. After the yarn supply device interrupts the yarn supply, the first capturing device captures the yarn on the package side upstream of the yarn travel direction from the splicing device, and the second capturing device is in standby position, while performing retraction control. In this retraction control, by bringing the yarn on the package side closer to the central region of the package in the winding width direction, the yarn between the package and the first capturing device is retracted from the path that the second capturing device moves from the standby position to the capturing position.

19. The yarn winding machine according to claim 18, characterized in that, The above-mentioned yarn winding machine has the following features: Multiple processing units; and The work trolley is capable of moving relative to multiple of the aforementioned processing units. Each processing unit is equipped with the aforementioned yarn feeding device and the aforementioned take-up device. The aforementioned work trolley is equipped with the aforementioned second capture device and the aforementioned connector device.

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