JP2019108629A - Spinning machine and method for capturing yarn - Google Patents

Abstract

To provide a spinning machine capable of easily removing a broken yarn, and a method for capturing a yarn.SOLUTION: A spinning machine 1 includes an air spinning device 4 for feeding a yarn Y, a winding device 20 for winding the yarn Y to form a package P, a yarn storage device 6 arranged between the air spinning device 4 and the winding device 20 and having a yarn storage roller 61 for temporarily storing the yarn Y delivered from the air spinning device 4 by winding it around an outer peripheral surface, a first suction device 71 arranged at a part along a yarn guide between the yarn storage device 6 and the winding device 20 and having a first suction port 72 always staying in a suction state, and a second suction device 75 having a second suction port 76 arranged oppositely to the yarn storage roller 61.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a spinning machine and a yarn catching method.

  In a yarn winding process of a spinning machine, control of winding tension is performed using a yarn storage device. For example, in Patent Document 1, a spinning device that twists a fiber bundle to produce a yarn, a winding device that winds up a yarn produced by the spinning device to produce a package, and a downstream side of the spinning device Disclosed a spinning machine comprising a yarn storage device for temporarily storing yarn, and a yarn suction device capable of generating a suction flow at a yarn suction port disposed in the vicinity of the outer peripheral surface of the yarn storage device. It is done. In this spinning machine, the prevention of scattering of fiber waste and the removal of unnecessary yarn from the yarn storage device can be performed efficiently.

JP, 2010-174421, A

  In such a spinning machine, when the yarn is divided between the yarn storage device and the winding device, the yarn end formed on the upstream side of the wound yarn as a package and the yarn stored in the yarn storage device Two yarn ends are formed with the yarn end formed on the downstream side of. Furthermore, in such a spinning machine, when the division of the yarn is detected between the yarn storage device and the winding device, the operation of the spinning device is also stopped, so the yarn is stored upstream of the yarn stored in the yarn storage device. A yarn end is also formed. As a result, divided yarns having yarn ends on the downstream side and the upstream side of the yarn stored in the yarn storage device are generated. Since the yarn end of the divided yarn exists in a free state, the divided yarn may be entangled in various places in the spinning machine. Such entangled split yarns are difficult to remove in a mechanical manner. In addition, the divided yarns stored in the yarn storage device may be greatly slackened, and the divided yarns may be tangled due to overlapping. Furthermore, if the divided yarn remains in the spinning machine, there is a possibility that yarn joining operation may be disturbed or yarn waste may be mixed in the package, so the yarn winding operation is temporarily stopped. After the operator removes the divided yarn, the winding operation is resumed.

  An object of the present invention is to provide a spinning machine and a yarn catching method capable of easily removing split yarns.

  The spinning machine according to the present invention is disposed between a yarn supplying unit for supplying a yarn, a winding device for winding a yarn to form a package, and a yarn supplying unit and a winding device, and is delivered from the yarn supplying unit The yarn to be wound is wound around the outer peripheral surface, and is disposed at a location along a yarn path between the yarn storage device and the winding device, and a yarn storage device having a yarn storage roller that temporarily stores the yarn. A first suction device having a first suction port in a suction state, and a second suction device having a second suction port disposed opposite to the yarn storage roller.

  The yarn catching method according to the present invention is disposed between a yarn supplying unit for supplying yarn, a winding device for winding a yarn to form a package, and a yarn supplying unit and a winding device, A yarn storage device having a yarn storage roller for temporarily storing yarn by being wound around the outer peripheral surface, and a yarn storage device disposed at a location along a yarn path between the yarn storage device and the winding device; A yarn machine implemented in a spinning machine, comprising: a first suction device having a first suction port always in a suction state; and a second suction device having a second suction port disposed opposite to the yarn storage roller A method of capturing, wherein at least while the yarn is being supplied from the yarn storage device to the winding device, the step of constantly bringing the first suction port into a suction state, and the yarn between the yarn storage device and the winding device When divided, at least a part of the downstream side of the yarn stored in the yarn storage device Comprising the steps of: sucking a part by the first suction device, the steps of sucking the upstream end of the thread at least part of which is accumulated in the yarn accumulating device by the second suction device.

  In the spinning machine and the yarn catching method, when the yarn is divided between the yarn storage device and the winding device, for example, the downstream end portion of the yarn (division yarn) at least a part of which is stored in the yarn storage device Are captured by a first suction device having a first suction port that is always in a suction state, and the upstream end of the split yarn is captured by a second suction device. Thus, the split yarns captured by the first suction device and the second suction device can be easily removed by the operator's hand. In addition, the divided yarn can be sucked and removed by the first suction device and / or the second suction device by cutting the divided yarns captured by the first suction device and the second suction device.

  The spinning machine according to the present invention captures the yarn supplied from the yarn supplying unit when the supply of the yarn from the yarn supplying unit is started after the yarn is divided between the yarn storage device and the winding device. The apparatus may further include a conveying device for conveying between the yarn storage device and the winding device. In the spinning machine of this configuration, after the yarn is divided between the yarn storage device and the winding device, each yarn end of the divided yarn can be captured by different devices.

  The spinning machine according to the present invention is disposed between a yarn supplying unit for supplying a yarn, a winding device for winding a yarn to form a package, and a yarn supplying unit and a winding device, and is delivered from the yarn supplying unit A yarn storage device having a yarn storage roller for temporarily storing the yarn by being wound around the outer peripheral surface, and after the yarn is divided between the yarn storage device and the winding device, from the yarn supplying section Between the yarn storage device and the winding device, a conveying device that captures the yarn supplied from the yarn supplying section and conveys the yarn between the yarn storage device and the winding device when the yarn supply of the yarn is started; A first suction device having a first suction port disposed at a location along the yarn path, and a second suction device having a second suction port disposed opposite to the yarn storage roller.

  The yarn catching method according to the present invention is disposed between a yarn supplying unit for supplying yarn, a winding device for winding a yarn to form a package, and a yarn supplying unit and a winding device, A yarn storage device having a yarn storage roller for temporarily storing yarn by being wound around the outer peripheral surface of the yarn to be delivered, and after the yarn is divided between the yarn storage device and the winding device, a yarn supplying section Between the yarn storage device and the winding device, and a conveying device that captures the yarn supplied from the yarn supplying section and conveys the yarn between the yarn storage device and the winding device when the supply of yarn from the A spinning machine comprising: a first suction device having a first suction port disposed at a location along the yarn path; and a second suction device having a second suction port disposed opposite to the yarn storage roller A method of catching yarn, wherein the yarn is broken between the yarn storage device and the winding device. The first suction device sucks the downstream end of the yarn at least partially stored in the yarn storage device, and the second suction of the upstream end of the yarn stored at least partially in the yarn storage device Aspirating by the device.

  In this spinning machine and the yarn catching method, when the yarn is divided between the yarn storage device and the winding device, for example, the first suction device in which the downstream end of the divided yarn is provided separately from the transport device And the upstream end of the split yarn is captured by the second suction device. Thus, the split yarns captured by the first suction device and the second suction device can be easily removed by the operator's hand. In addition, the divided yarn can be sucked and removed by the first suction device and / or the second suction device by cutting the divided yarns captured by the first suction device and the second suction device.

  In the spinning machine according to the present invention, the yarn storage device includes the winding direction in which the yarn storage roller is rotated when the yarn is wound around the outer peripheral surface of the yarn storage roller, and the yarn storage device when removing the yarn from the yarn storage roller. The second suction port of the second suction device has an extension of the removal direction and the tangential direction of the yarn storage roller with respect to the yarn storage roller, having a drive unit that rotates the yarn storage roller in the removal direction in which the roller is rotated. It may be arranged to be located on a line. In the spinning machine of this configuration, the divided yarn released from the yarn storage roller can be suctioned without increasing the suction force of the second suction port in the second suction device.

  In the spinning machine according to the present invention, when the yarn is divided between the yarn storage device and the winding device, the first suction device at least a part of the downstream end of the yarn stored in the yarn storage device With suction, the second suction device may suction the upstream end of the yarn stored at least in part in the yarn storage device. In the spinning machine of this configuration, since both ends of the divided yarns can be captured, overlapping of the divided yarns can prevent the yarns from being caught and the divided yarns remaining in the spinning machine.

  The spinning machine according to the present invention may further comprise a yarn removal guide for drawing the downstream end of the yarn from the first suction device. Thereby, by pulling out the downstream end of the divided yarn from the first suction device, the suction force of the first suction device does not act on the downstream end, so that the divided yarn is suctioned and removed by the second suction device. Can.

  The spinning machine according to the present invention is configured such that the downstream end of the yarn is pulled out of the first suction device simultaneously with or after the rotation of the yarn storage roller in the removal direction, the yarn storage device and the yarn removal guide The controller may further include a controller that controls Thereby, the parting thread drawn from the first suction device can be suctioned to the second suction port of the second suction device.

  The spinning machine according to the present invention further includes a yarn joining device that performs a yarn joining operation of joining a yarn supplied by the yarn supplying unit and a yarn wound up by the winding device, and the control unit includes: The yarn separated between the yarn storage device and the winding device was sucked and removed by the second suction device by controlling the yarn joining device and the winding device and rotating the yarn storage roller in the removal direction. After that, the yarn joining operation by the yarn joining device may be started, and after the yarn joining operation is completed, the winding of the yarn by the winding device may be started. In the spinning machine of this configuration, the yarn joining operation is performed in a state where the divided yarns are not left in the yarn storage device, and the winding operation is started. It is possible to avoid doing

  The spinning machine according to the present invention may further include an injection device for injecting air toward the first suction port. In the spinning machine of this configuration, when the yarn is divided between the yarn storage device and the winding device, the yarn end of the divided yarn can be more reliably sucked by the first suction port.

  The spinning machine according to the present invention may be provided with an air spinning device that twists a fiber bundle by an air flow to produce a yarn. In a spinning machine provided with an air spinning device, a yarn end is formed on the upstream side of the yarn storage device in order to stop the generation of the yarn by the air spinning device when the yarn is divided between the yarn storage device and the winding device. Ru. Therefore, entanglement of the divided yarn can be prevented by providing the first suction device and the second suction device as described above.

  The spinning machine according to the present invention may further comprise a cutting device for cutting the yarn captured by the first suction device and the second suction device. In the spinning machine of this configuration, since the yarn can be cut by the cutting device while being captured by the first suction device and the second suction device, the yarn is divided by the first suction device and the second suction device after the yarn is cut. Can be removed by suction.

  In the spinning machine according to the present invention, the yarn storage device may be disposed below the winding device in the vertical direction. When the yarn storage device is disposed below the winding device, when the yarn is divided between the yarn storage device and the winding device, the downstream end of the divided yarn is drooping downward. As the yarns overlap, the possibility that the yarns may get tangled or the broken yarn may remain in the spinning machine may increase. In the spinning machine of this configuration, since the split yarn is captured by the first suction device and the second suction device, the occurrence of the above-mentioned problems can be avoided.

  According to the present invention, the split yarn can be easily removed.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic block diagram which showed the structure of the spinning machine which is one Embodiment. It is the top view which looked at the thread | yarn storage device of FIG. 1 from the rotating shaft upper direction. It is a functional block diagram of the spinning machine of FIG. It is the flowchart which showed the operation | movement at the time of the thread | yarn cutting in the spinning machine which is one Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements will be denoted by the same reference symbols, without redundant description.

  As shown in FIG. 1, the spinning machine 1 includes a spinning unit 2 and a control unit 90. The spinning units 2 are arranged in a line. Each spinning unit 2 drafts a sliver (fiber bundle) S to generate a fiber bundle F, twists the fiber bundle F by a swirling air flow to generate a yarn Y, and winds the yarn Y around a bobbin B Form a package P. The control unit 90 controls the operation of the spinning machine 1.

  The control unit 90 is configured of, for example, a machine control device and a plurality of unit controllers. The machine control device is a host controller of a plurality of unit controllers. Each unit controller is provided for each predetermined number (one or more) of spinning units 2 and controls the operation of each spinning unit 2. The details of the control performed by the control unit 90 will be described in detail later.

  Hereinafter, the upstream side in the traveling direction of the sliver S, the fiber bundle F, and the yarn Y at the time of winding up the package P is referred to as “upstream side”, and the downstream side in the traveling direction is referred to as “downstream side”. One side (for example, the work passage side) in the horizontal direction perpendicular to the arrangement direction of the plurality of spinning units 2 is referred to as "front side", and the other side in the horizontal direction is referred to as "rear side". The upper side in the vertical direction is called "upper side", and the lower side in the vertical direction is called "lower side".

  Each spinning unit 2 includes a drafting device (yarn feeding unit) 3, an air spinning device (yarn feeding unit) 4, a yarn monitoring device 5, a yarn storage device 6, and a yarn sequentially from the upstream side toward the downstream side. A splicing device 7, a yarn sensor 80, and a winding device 20 are provided. Furthermore, each spinning unit 2 includes a first catching and guiding device 8, a second catching and guiding device 9, a first suction device 71, a second suction device 75, and an ejection device 85. As an example, the traveling directions of the sliver S, the fiber bundle F, and the yarn Y from the draft device 3 to the yarn storage device 6 are directions from the front side to the rear side, and are inclined upward with respect to the horizontal direction. The traveling direction of the yarn Y from the yarn storage device 6 to the winding device 20 is a direction from the lower side to the upper side, and is inclined forward with respect to the vertical direction. In each spinning unit 2, the traveling direction of the yarn Y is switched in the yarn storage device 6.

  The drafting device 3 drafts the sliver S to generate a fiber bundle F, and supplies the fiber bundle F to the pneumatic spinning device 4. The draft device 3 has a back roller pair 31, a third roller pair 32, a middle roller pair 33, and a front roller pair 34 in order from the upstream side to the downstream side. An apron belt 35 is stretched around each roller constituting the middle roller pair 33.

  The air spinning device 4 twists the fiber bundle F from the drafting device 3 by a swirling air flow to produce a yarn Y. The air spinning device 4 has a nozzle block (not shown) and a hollow guide shaft. In the nozzle block, a swirling air flow acts on the fiber bundle F while the fiber bundle F fed from the draft device 3 is guided to the inside. The twisted fiber bundle F is delivered to the outside through the hollow guide shaft body. The generation and stopping of the swirling air flow are controlled by a unit controller.

  The yarn monitoring device 5 monitors the information of the traveling yarn Y, and detects the presence or absence of a yarn defect based on the monitored information. When the yarn monitoring device 5 detects a yarn defect, the yarn monitoring device 5 transmits a yarn defect detection signal to the control unit 90.

  The yarn storage device 6 is disposed between the pneumatic spinning device 4 and the winding device 20, and temporarily stores the yarn Y delivered from the pneumatic spinning device 4 by winding the yarn Y around the yarn storage roller 61. The yarn storage device 6 is disposed below the winding device 20 in the vertical direction. The yarn storage device 6 has a yarn storage roller 61 and a yarn hooking member 62.

  The yarn storage roller 61 is rotated by an electric motor (drive unit) M. The electric motor M rotates the yarn storage roller 61 (forward rotation) when the yarn Y is wound around the outer peripheral surface of the yarn storage roller 61, and stores the yarn when removing the yarn from the yarn storage roller 61. The yarn storage roller 61 is rotated in the removal direction in which the roller 61 is rotated (reverse rotation). The yarn hooking member 62 is attached to the downstream end of the yarn storage roller 61 and is rotatable relative to the yarn storage roller 61. A magnetic force acts on the yarn hooking member 62 to resist relative rotation with respect to the yarn storage roller 61. Therefore, in a state in which the yarn Y does not have tension above a predetermined level, the yarn hooking member 62 rotates integrally with the yarn storage roller 61, and the yarn Y is wound (stored) on the yarn storage roller 61. In a state in which a tension greater than a predetermined level is generated in the yarn Y, the yarn hooking member 62 rotates relative to the yarn storage roller 61, and the yarn Y is unwound from the yarn storage roller 61. By storing the yarn Y in this manner, the yarn storage device 6 stably pulls out the yarn Y from the pneumatic spinning device 4 while absorbing fluctuations in tension generated in the yarn Y on the downstream side of the yarn storage device 6.

  A first guide 63 is disposed upstream of the yarn storage device 6. The first guide 63 guides the yarn Y traveling to the yarn storage device 6 from the upstream side. The first guide 63 is movable, and draws the yarn Y from the pneumatic spinning device 4 to the yarn storage device 6 when the yarn joining operation is performed. On the downstream side of the yarn storage device 6, a second guide 64, a third guide 65, and a fourth guide (yarn removing guide) 66 are disposed. The second guide 64 and the third guide 65 guide the yarn Y traveling downstream from the yarn storage device 6. The second guide 64 is movable and can guide the yarn Y to the third guide. The fourth guide 66 is movably provided, and hangs the yarn Y on the yarn hooking member 62 or removes the yarn Y from the yarn hooking member 62. When the yarn Y is divided between the yarn storage device 6 and the winding device 20, the operation of the pneumatic spinning device 4 is also stopped, so the yarn Y is also divided between the yarn storage device 6 and the pneumatic spinning device 4 Ru. As a result, at least a part is stored in the yarn storage device 6, and a divided yarn YD having an upstream yarn end and a downstream yarn end is generated. The downstream end YD2 of the divided yarn YD is sucked by the first suction device 71. The fourth guide 66 pulls the downstream end YD2 out of the first suction device 71.

  The yarn joining device 7 performs a yarn joining operation of joining the yarn Y from the pneumatic spinning device 4 and the yarn Y from the package P after the yarn Y is cut or divided or the yarn Y is broken for some reason. The yarn joining device 7 is a splicer device that twists yarn ends together by a swirling air flow. However, the yarn joining device 7 may be a mechanical knotter or the like. The first capture and guide device 8 and the second capture and guide device 9 are each pivotable about the proximal end portion. The first catching and guiding device (conveying device) 8 catches the yarn Y from the pneumatic spinning device 4 by the suction air flow by rotating downward, for example, when the yarn joining operation is performed, and then, upward The yarn Y from the pneumatic spinning device 4 is guided (conveyed) to the yarn joining device 7 disposed between the yarn storage device 6 and the winding device 20 by pivoting to. The second catching and guiding device 9 is rotated upward to capture the yarn Y from the package P by the suction air flow when the yarn joining operation is performed, and then the package Y is rotated downward. The yarn Y from P is guided to the yarn joining device 7.

  The yarn sensor 80 is disposed between the yarn joining device 7 and the winding device 20, and detects the presence or absence of the supply of the yarn Y to the winding device 20. Information on the presence or absence of the yarn Y detected by the yarn sensor 80 is sent to the control unit 90.

  The winding device 20 forms the package P by winding the yarn Y drawn from the pneumatic spinning device 4 by the yarn storage device 6 around the bobbin B. The winding device 20 has a drum 23, a pair of bobbin holders 21, and a cradle 24. A yarn guide 26 is disposed on the upstream side of the winding device 20. The yarn guide 26 guides the yarn Y traveling to the drum 23 from the upstream side.

  The drum 23 contacts the bobbin B and rotates the bobbin B. In a state in which the yarn Y is wound around the bobbin B, the drum 23 contacts the package P and rotates the package P. The drum 23 is rotatably supported by a frame (not shown), and is rotated by a drum drive unit (not shown) provided for each spinning unit 2 with the rotation axis L1 as a center line. A groove (not shown) is formed on the surface of the drum 23. Thereby, when the yarn Y is wound around the bobbin B, the yarn Y is traversed.

  The cradle 24 is pivotable about a pivot axis L2. The cradle 24 absorbs the increase in the diameter of the package P accompanying the winding of the yarn Y on the bobbin B by pivoting about the pivot axis L2. The pair of bobbin holders 21 are provided on the cradle 24 and rotatably hold both ends of the bobbin B.

  The first suction device 71 has a first suction port 72 disposed at a location along the yarn path between the yarn storage device 6 and the winding device 20. The first suction port 72 is always in a suction state. The first suction device 71 is fixed to a frame or the like (not shown) in a state where the first suction port 72 can not move. The first suction port 72 is connected to a suction source not shown. The on / off control of the suction force of the first suction port 72 is performed by the opening / closing control of the shutter 73 by the control unit 90. When the yarn Y is divided between the yarn storage device 6 and the winding device 20, the first suction device 71 sucks the downstream end YD2 (see FIG. 2) of the divided yarn YD.

  The second suction device 75 has a second suction port 76 disposed in the yarn storage roller 61 of the yarn storage device 6. The second suction port 76 starts suctioning to suction the divided yarn YD when the yarn sensor 80 no longer detects the yarn Y (when the yarn Y is divided). The second suction port 76 is disposed at a position where the suction force acts on the outer peripheral surface of the yarn storage roller 61 and the yarn Y wound around the outer peripheral surface can be suctioned. The second suction port 76 is connected to a suction source (not shown). The ON / OFF of the suction force of the second suction port 76 is performed by the open / close control of the shutter 77 by the control unit 90. As shown in FIG. 2, the second suction port 76 has a rotational direction (removal direction) and a tangential direction of the yarn storage roller 61 at the time of reverse rotation when the divided yarn YD stored in the yarn storage roller 61 is removed. It is arranged to be located on the extension line. When the yarn Y is divided between the yarn storage device 6 and the winding device 20, the second suction device 75 sucks the upstream end YD1 of the divided yarn YD.

  The injection device 85 is disposed to face the first suction port 72 across the yarn path. The injection device 85 has an injection port 86 for injecting compressed air toward the first suction port 72. The injection port 86 is connected to a compressed air source (not shown). The on / off control of the injection from the injection port 86 is performed by the control unit 90 controlling the opening and closing of the solenoid valve of the shutter 87. The injection device 85 injects compressed air to the first suction port 72 when the yarn Y is divided between the yarn storage device 6 and the winding device 20, so that the divided yarn YD is divided by the first suction device 71. Help capture. That is, the injection device 85 feeds the yarn Y to the first suction port 72 by injecting compressed air. Further, the injection device 85 prevents the slack of the yarn Y immediately after the yarn joining operation by injecting compressed air toward the yarn Y immediately after the yarn joining operation.

  The control unit 90 is an electronic control unit having a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and the like. The control unit 90 loads a program stored in the ROM into the RAM and executes the control by the CPU to execute various controls.

  When the control unit 90 receives a yarn defect detection signal from the yarn monitoring device 5 and receives information indicating that there is no yarn Y detected by the yarn sensor 80, the supply of the yarn Y is performed to divide the yarn Y. Stop the operation of the draft device 3 and the pneumatic spinning device 4 so that The control unit 90 may operate, for example, a cutter of the yarn monitoring device 5 in order to cut the yarn Y. Further, a dedicated cutter for cutting the yarn Y may be provided, and the control unit 90 may control the cutter to cut the yarn Y.

  The control unit 90 mainly uses information input from the yarn sensor 80 as shown in FIG. 3 and also uses the air spinning device 4, the yarn storage device 6, the yarn joining device 7, the first catching and guiding device 8, By controlling the second catching and guiding device 9, the fourth guide 66, the first suction device 71, the second suction device 75, and the ejection device 85, the yarn joining operation can be completed while removing the divided yarn YD. .

  The control unit 90 reversely rotates the yarn storage roller 61 in the direction of removing (unwinding) the divided yarn YD stored in the yarn storage roller 61 simultaneously with or after starting reverse rotation, the divided yarn from the first suction port 72 The yarn storage device 6 and the fourth guide 66 are controlled so that the downstream end YD2 of YD is pulled out. After the divided yarn YD is sucked and removed by the second suction device 75 by the reverse rotation of the yarn storage roller 61, the control unit 90 causes the yarn joining device 7 to start the yarn joining operation and the yarn joining operation is completed. The winding of the yarn Y by the winding device 20 is started.

  Next, the yarn catching method performed at the time of yarn joining operation performed after the yarn Y is divided between the yarn storage device 6 and the winding device 20 will be described in detail with reference to FIG.

  When the yarn Y is divided between the yarn storage device 6 and the winding device 20, the downstream end YD2 is formed on the downstream side of the divided yarn YD stored in the yarn storage device 6. The control unit 90 detects division of the yarn Y between the yarn storage device 6 and the winding device 20 (step S1). Specifically, the control unit 90 determines the division of the yarn Y between the yarn storage device 6 and the winding device 20 based on the information indicating that the yarn Y detected by the yarn sensor 80 is not present. When detecting the division of the yarn Y between the yarn storage device 6 and the winding device 20, the control unit 90 stops the operation of the draft device 3 and the pneumatic spinning device 4 (step S2). By stopping the operation of the draft device 3 and the air spinning device 4, an upstream end YD1 is formed on the divided yarn YD. The first suction device 71, which is always in a suction state, captures the divided yarn YD (step S3). When the separation of the yarn Y is detected by the yarn sensor 80, the control unit 90 operates the injection device 85 to support the suction of the divided yarn YD by the first suction device 71. The controller 90 stops the rotation of the yarn storage roller 61 (step S4).

  Next, the control unit 90 causes the second suction device 75 to start suction (step S5). Specifically, the control unit 90 controls the shutter 77 to be opened. The control unit 90 starts reverse rotation of the yarn storage roller 61 (step S6), and causes the second suction device 75 to capture the divided yarn YD (step S7). As a result, the divided yarn YD is captured by the first suction device 71 and the second suction device 75. More specifically, the downstream end YD2 of the divided yarn YD is sucked by the first suction device 71, and the upstream end YD1 is sucked by the second suction device 75.

  In this state, the control unit 90 starts the fourth guide 66 and causes the downstream end YD2 of the divided yarn YD sucked by the first suction device 71 to be pulled out from the first suction port 72 (step S8). ). As a result, the downstream end YD2 of the divided yarn YD moves to the yarn storage device 6, and the divided yarn YD is sequentially suctioned from the upstream end YD1 by the second suction device 75 (step S9). The divided yarn YD can be suctioned and removed by the operations of step S1 to step S9 described above. In the above description, steps S <b> 1 to S <b> 9 are described to be performed in order, but there may be steps performed almost simultaneously.

  The control unit 90 controls the second catching and guiding device 9 to guide the yarn Y on the winding device 20 side to the yarn joining device 7 in a state where the divided yarn YD is suctioned and removed as described above. Next, the control unit 90 resumes the operation of the draft device 3 and the pneumatic spinning device 4 and controls the first catching and guiding device 8 to guide the yarn Y delivered from the pneumatic spinning device 4 to the yarn joining device 7 Let The control unit 90 controls the yarn joining device 7 to execute the yarn joining operation of joining yarn ends of the yarn Y guided by the first catching and guiding device 8 and the second catching and guiding device 9. The control unit 90 controls the winding device 20 to start winding of the yarn Y simultaneously with or after the yarn joining operation is completed.

  Next, the operation and effect of the spinning machine 1 of the embodiment described above will be described. In the spinning machine 1 of the present embodiment, the downstream end YD2 of the divided yarn YD is captured by the first suction device 71 having the first suction port 72 which is always in the suction state. Also, the upstream end YD1 of the divided yarn YD is captured by the second suction device 75 having the second suction port 76 disposed to face the yarn storage roller 61. Thus, the split yarn YD captured by the first suction device 71 and the second suction device 75 can be easily removed manually. Further, the divided yarn YD captured by the first suction device 71 and the second suction device 75 is cut by a cutter or the like to suck and remove the divided yarn YD to the first suction device 71 and / or the second suction device 75. It can be done.

  In the spinning machine 1 of the above embodiment, as shown in FIG. 2, the second suction port 76 of the second suction device 75 removes the yarn Y (divided yarn YD) stored in the yarn storage roller 61. At the time of reverse rotation, the yarn storage roller 61 is disposed so as to be located on the extension direction of the rotation direction (reverse rotation direction shown in FIG. 2) and the tangential direction. Thus, the divided yarn YD unwound from the yarn storage roller 61 can be suctioned without relatively increasing the suction force of the second suction device 75.

  In the spinning machine 1 of the above embodiment, both ends of the divided yarn YD are captured by the first suction device 71 and the second suction device 75, respectively. As a result, overlapping of the divided yarns YD can prevent the divided yarns YD from being caught each other or that the divided yarns YD are left in the spinning unit 2.

  The spinning machine 1 according to the above embodiment includes the fourth guide 66 for drawing out the downstream end YD2 from the first suction device 71 for sucking the downstream end YD2 of the divided yarn YD, and the division in which both ends are captured temporarily The downstream end YD2 of the yarn YD is pulled out of the first suction device 71. Thus, the second suction device 75 can suction and remove the divided yarn YD.

  In the spinning machine 1 according to the above embodiment, the downstream end YD2 of the divided yarn YD is pulled out from the first suction device 71 simultaneously with or after the start of reverse rotation when the yarn storage roller 61 is rotated in the removal direction (reverse rotation). As described above, since the yarn storage device 6 and the fourth guide 66 are controlled, the divided yarn YD drawn from the first suction port 72 of the first suction device 71 can be guided to the second suction port 76 of the second suction device 75. .

  In the spinning machine 1 of the above embodiment, the divided yarn YD is sucked and removed by the second suction device 75 by rotating the yarn storage roller 61 of the yarn storage device 6 in reverse, and then the yarn joining operation by the yarn joining device 7 is started. After the yarn joining operation is completed, the winding of the yarn Y by the winding device 20 is started. For this reason, since the yarn joining operation and the winding operation are performed in a state where the divided yarn YD is not left in the yarn storage device 6, the yarn joining operation may be disturbed or yarn waste may be mixed in the package P. You can avoid that.

  In the spinning machine 1 of the above-described embodiment, since the jetting device 85 for jetting the air toward the first suction port 72 is provided, the divided yarn YD is easily sucked by the first suction port 72.

  In the spinning machine 1 of the above embodiment, when the supply of the yarn Y from the pneumatic spinning device 4 is started after the yarn Y is divided, the yarn Y supplied from the pneumatic spinning device 4 is captured and the yarn joining device A first catching and guiding device 8 for guiding (conveying) to 7 is provided separately from the first suction device 71.

  As mentioned above, although one embodiment of the present invention was described, the present invention is not limited to the above-mentioned embodiment.

  In the spinning machine 1 of the above embodiment, an example in which the yarn storage device 6 is disposed lower than the winding device 20 in the vertical direction, that is, an example in which the yarn Y travels upward from below is described. However, the present invention may be applied to a spinning machine in which each device is disposed such that the yarn storage device 6 is disposed above the winding device 20 and the yarn Y supplied from the upper side is wound on the lower side. . In the spinning machine according to the modification in which the yarn storage device 6 is disposed above the winding device 20, the divided yarns are separated even if the yarn Y is divided between the yarn storage device 6 and the winding device 20. The downstream end YD2 of YD does not fall downward. Therefore, the possibility of occurrence of a defect that the divided yarns YD are caught and the divided yarn YD remains in the spinning unit 2 due to overlapping of the divided yarns YD is low.

  In the above embodiment, an example in which the separated yarn YD is removed by suction using the second suction device 75 has been described, but the separated yarn is also used in combination with the scrap yarn recovery device provided around the yarn storage device 6. YD may be recovered.

  In the above embodiment, the fourth guide 66 is used as a means for releasing one yarn end from the state in which both ends of the divided yarn YD are captured by the first suction device 71 and the second suction device 75. Although it has been described, as shown by the chain line in FIG. 1, a cutting device 89 may be separately provided to cut between the downstream end YD2 and the upstream end YD1 of the divided yarn YD. When the split yarn YD whose both ends are captured by the first suction device 71 and the second suction device 75 is cut, one split yarn YD is suctioned and removed by the first suction device 71 at the cut portion. The split yarn YD can be sucked and removed by the second suction device 75.

  The winding device 20 is not limited to a type in which the drum 23 is driven to rotate and the bobbin B in contact with the drum 23 is driven to rotate, and the bobbin B is driven to rotate and contacts the bobbin B (package P). The drum 23 may be of a type that can be driven to rotate. That is, the drum 23 should just be a drum which contacts and rotates with the bobbin B (package P). In addition, a traverse groove may not be formed on the surface of the drum 23, and the yarn Y may be traversed when the yarn Y is wound around the bobbin B by a traverse device provided separately.

  In the spinning unit 2, the traveling direction of the yarn Y is switched in the yarn storage device 6, but the traveling direction of the yarn Y may not be switched in the yarn storage device 6. A delivery roller and a nip roller may be disposed between the pneumatic spinning device 4 and the yarn storage device 6 in order to draw the yarn Y from the pneumatic spinning device 4. The yarn monitoring device 5 may be disposed between the yarn storage device 6 and the winding device 20.

  DESCRIPTION OF SYMBOLS 1 ... spinning machine, 2 ... spinning unit, 3 ... draft device (yarn feeding part), 4 ... air spinning device (yarn feeding part), 5 ... yarn monitoring device, 6 ... yarn storage device, 7 ... yarn joining device, 8 ... first capture and guide device (conveying device), 9 ... second capture and guide device, 20 ... winding device, 61 ... yarn storage roller, 66 ... fourth guide (yarn removal guide), 71 ... first suction device, 72 ... first suction port, 75 ... second suction device, 76 ... second suction port, 80 ... thread sensor, 85 ... injection device, 89 ... cutting device, 90 ... control unit, M ... electric motor (drive unit), Y ... Yarn, YD ... divided yarn, YD 1 ... upstream end, YD 2 ... downstream end.

Claims (14)

A yarn supplying unit for supplying a yarn;
A winding device for winding the yarn to form a package;
A yarn storage device disposed between the yarn supplying unit and the winding device, and having a yarn storage roller for temporarily storing the yarn by winding the yarn delivered from the yarn supplying unit around an outer peripheral surface When,
A first suction device having a first suction port disposed at a location along the yarn path between the yarn storage device and the winding device and in a constantly suctioned state;
A second suction device having a second suction port disposed opposite to the yarn storage roller;
Equipped with a spinning machine.   The yarn supplied from the yarn supplying unit is captured when the yarn supply from the yarn supplying unit is started after the yarn is divided between the yarn storage device and the winding device. The spinning machine according to claim 1, further comprising a conveying device for conveying between a yarn storage device and the winding device. A yarn supplying unit for supplying a yarn;
A winding device for winding the yarn to form a package;
A yarn storage device disposed between the yarn supplying unit and the winding device, and having a yarn storage roller for temporarily storing the yarn by winding the yarn delivered from the yarn supplying unit around an outer peripheral surface When,
The yarn supplied from the yarn supplying unit is captured when the yarn supply from the yarn supplying unit is started after the yarn is divided between the yarn storage device and the winding device. A conveying device for conveying between a yarn storage device and the winding device;
A first suction device having a first suction port disposed at a location along a yarn path between the yarn storage device and the winding device;
A second suction device having a second suction port disposed opposite to the yarn storage roller;
Equipped with a spinning machine. The yarn storage device includes a winding direction in which the yarn storage roller is rotated when the yarn is wound around an outer peripheral surface of the yarn storage roller, and the yarn storage roller when removing the yarn from the yarn storage roller. And a drive unit for rotating the yarn storage roller in a removal direction in which
The second suction port of the second suction device is disposed on an extension of the removing direction and the tangential direction of the yarn storage roller with respect to the yarn storage roller. The spinning machine according to any one of the preceding claims.   When the yarn is divided between the yarn storage device and the winding device, the first suction device sucks the downstream end of the yarn stored at least in part in the yarn storage device. The spinning machine according to any one of claims 1 to 4, wherein the second suction device sucks the upstream end of the yarn at least a part of which is stored in the yarn storage device.   The spinning machine according to claim 5, further comprising a yarn removing guide for drawing out the downstream end of the yarn from the first suction device.   The yarn storage device and the yarn removal guide are controlled such that the downstream end of the yarn is pulled out from the first suction device simultaneously with or after the yarn storage roller is rotated in the removal direction. The spinning machine according to claim 6, further comprising a control unit. It further comprises a yarn joining device that performs a yarn joining operation of joining the yarn supplied by the yarn supplying unit and the yarn wound up by the winding device.
The control unit
Controlling the yarn supplying unit, the yarn joining device, and the winding device;
The yarn by the yarn joining device after the yarn separated by the yarn accumulating device and the winding device is sucked and removed by the second suction device by rotating the yarn accumulating roller in the removing direction. The spinning machine according to claim 7, wherein winding operation is started and winding of the yarn by the winding device is started after the yarn joining operation is completed.   The spinning machine according to any one of claims 1 to 8, further comprising an injection device for injecting air toward the first suction port.   The spinning machine according to any one of claims 1 to 9, wherein the yarn feeding unit includes an air spinning device that twists a fiber bundle by an air flow to generate the yarn.   The spinning machine according to any one of claims 1 to 10, further comprising: a cutting device for cutting the yarn captured by the first suction device and the second suction device.   The spinning machine according to any one of claims 1 to 11, wherein the yarn storage device is disposed below the winding device in the vertical direction. A yarn supplying unit for supplying a yarn, a winding device for winding the yarn to form a package, and the yarn disposed between the yarn supplying unit and the winding device and delivered from the yarn supplying unit A yarn storage device having a yarn storage roller for temporarily storing the yarn by being wound around an outer peripheral surface, and disposed at a location along a yarn path between the yarn storage device and the winding device, While the yarn is being supplied from the yarn storage device to the winding device, a first suction device having a first suction port constantly in a suction state, and a second suction disposed opposite to the yarn storage roller And a second suction device having a mouth. A yarn catching method implemented in a spinning machine, comprising:
A step of constantly bringing the first suction port into a suction state;
A step of suctioning, by the first suction device, the downstream end of the yarn at least a portion of which is stored in the yarn storage device when the yarn is divided between the yarn storage device and the winding device When,
Suctioning, with the second suction device, the upstream end of the yarn at least partially stored in the yarn storage device. A yarn supplying unit for supplying a yarn, a winding device for winding the yarn to form a package, and the yarn disposed between the yarn supplying unit and the winding device and delivered from the yarn supplying unit A yarn storage device having a yarn storage roller for temporarily storing the yarn by being wound around an outer peripheral surface, and the yarn supply after the yarn is divided between the yarn storage device and the winding device A feeding device for catching the yarn fed from the yarn feeding unit and feeding it between the yarn storage device and the winding device when feeding of the yarn from the unit is started, the yarn storage device, and A second suction device having a first suction device having a first suction port disposed at a location along the yarn path between the take-up device and a second suction port disposed opposite to the yarn storage roller And a yarn capture method implemented in a spinning machine, comprising:
A step of suctioning, by the first suction device, the downstream end of the yarn at least a portion of which is stored in the yarn storage device when the yarn is divided between the yarn storage device and the winding device When,
Suctioning, with the second suction device, the upstream end of the yarn at least partially stored in the yarn storage device.

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