Yarn winding device

Abstract

The invention provides a yarn winding device. The power consumption of a suction device in the yarn winding device is reduced. A yarn winding device (10) includes a yarn supply section (15), a winding section (17), a yarn joining device (38), a suction section (44), and a control section (50). The suction section (44) is disposed between the yarn joining device (38) and the winding section (17) and sucks the yarn (14). The control unit (50) performs control such that the joining operation, the winding start operation, and the suction start operation are performed in this order, and performs control such that the suction start operation is performed after a predetermined first time has elapsed after the winding start operation. The suction start operation is an operation for switching the suction unit (44) from a stopped state to a suction state.

Description

Technical Field

[0001] The invention relates to a yarn taking-up device. Background Art

[0002] A yarn winding device is known that winds up the yarn unwound from the yarn supply bobbin to form a package. This yarn winding device is provided with a joint device, which is used to join the lower yarn on the yarn supply bobbin side with the upper yarn on the package side when the yarn is broken between the yarn supply bobbin and the package. In addition, a yarn catcher is provided, and when the yarn is broken or cut during the yarn winding operation, the yarn catcher attracts and removes foreign matter such as waste yarn and flying waste attached to the yarn.

[0003] In the yarn winding device of JP2010-042904A, the upper yarn guide tube and the lower yarn guide tube arranged above and below the splicing device (splier device) attract and capture the upper yarn and the lower yarn and guide them to the splicing device. After that, the splicing device splices the upper yarn and the lower yarn. The yarn catcher can attract and remove foreign matter such as waste yarn and flying flowers attached to the running yarn by generating suction force at the open end during the yarn winding operation. Summary of the invention

[0004] Problems to be solved by the invention

[0005] The yarn catcher is a tubular member with an opening end close to the yarn travel path, and generates suction force at the opening end by connecting the other end to a suction device. Therefore, if suction force is always generated at the opening end of the yarn catcher during the yarn winding operation, the suction device consumes power.

[0006] An object of the present invention is to reduce power consumption of a suction device in a yarn winding device.

[0007] Means for solving problems

[0008] Hereinafter, a plurality of aspects will be described as means for solving the problems. These aspects can be arbitrarily combined as needed.

[0009] The yarn winding device of the first aspect of the present invention comprises a yarn supplying section, a winding section, a splicing device, a suction section and a control section. The yarn supplying section supplies yarn. The winding section winds up the yarn supplied from the yarn supplying section to form a package. The splicing device splices the yarn on the yarn supplying section side with the yarn on the package side. The suction section is arranged between the splicing device and the winding section to suck the yarn. The control section controls so that a splicing action, a winding start action, and a suction start action are performed in sequence, and controls so that a suction start action is performed after a prescribed first time has passed after the winding start action. The splicing action is an action in which the splicing device performs a splicing action. The winding start action is an action in which the winding section starts to wind the yarn into the package. The suction start action is an action in which the suction section is switched from a stop state to a suction state.

[0010] The yarn winding device stops the suction section at a predetermined first time after the winding start operation. This can reduce the operating time of the suction device and thus reduce the power consumption of the suction device.

[0011] The control unit may perform control so as to bring the suction unit into a stopped state before performing the yarn joining operation.

[0012] The yarn winding device reduces the power consumption of the suction device.

[0013] The control unit may perform control so as to stop the suction unit when the package is formed after a predetermined second time has elapsed after the suction start operation.

[0014] The yarn winding device reduces the power consumption of the suction device.

[0015] Alternatively, the yarn winding device further includes a detection unit and a cutting unit. The detection unit detects the state of the traveling yarn. In addition, the state of the yarn includes the presence or absence of yarn defects and whether the yarn is traveling. The cutting unit cuts the yarn. The suction unit is disposed at a position downstream of the cutting unit in the traveling direction of the yarn when the yarn is wound. Alternatively, the control unit controls the cutting unit to cut the yarn based on the detection result of the detection unit, and controls the suction unit to be in a suction state.

[0016] The yarn winding device sets the suction section to a suction state in accordance with the timing of cutting the yarn that is prone to generate foreign matters such as yarn waste and fly waste, thereby preventing foreign matters from being mixed into the package.

[0017] Alternatively, the yarn winding device may further include an injection unit for injecting air into the space where the yarn supply of the detection unit travels. Alternatively, the control unit may control the cutting unit to cut the yarn and control the suction unit to enter a suction state. Alternatively, the control unit may subsequently control the suction unit to enter a stop state. Alternatively, the control unit may subsequently control the injection unit to inject air.

[0018] The yarn winding device makes the suction part enter the suction state while cutting the yarn, and then switches to the stop state and injects air through the injection part. Since the suction stops when injecting air, it is easy to blow away foreign matter such as waste yarn and flying flowers in the detection part.

[0019] Alternatively, the yarn winding device further includes an injection unit for injecting air into the space where the yarn is supplied from the detection unit. Alternatively, the control unit controls the cutting unit to cut the yarn and controls the suction unit to enter a suction state. Alternatively, the control unit subsequently controls the injection unit to inject air.

[0020] In this yarn winding device, foreign matters such as yarn waste and waste fibers that fly up due to the jet of air from the jet section are also sucked by the suction section, so that mixing of foreign matters into the package can be suppressed.

[0021] The yarn winding device of the second aspect of the present invention comprises a yarn supplying section, a winding section, a jointing device, a suction section, a control section, a detection section and a cutting section. The yarn supplying section supplies yarn. The winding section winds up the yarn supplied from the yarn supplying section to form a package. The jointing device performs a joint between the yarn on the yarn supplying section side and the yarn on the package side. The suction section is arranged between the jointing device and the winding section to attract the yarn. The detection section detects the state of the traveling yarn. In addition, the state of the yarn includes the presence or absence of yarn defects and whether the yarn is traveling. The cutting section cuts the yarn. The suction section is arranged at a position downstream of the cutting section in the traveling direction of the yarn when the yarn is wound. The control section controls so that the suction section is in a stopped state when the package is formed. The control section controls so that the cutting section cuts the yarn based on the detection result of the detection section, and controls so that the suction section is in a suction state.

[0022] The yarn winding device stops the suction part when forming a package. Thus, the power consumption of the suction device is reduced. In addition, the yarn winding device stops the suction part at the same time as the timing of cutting the yarn that is prone to produce foreign matter such as waste yarn and flying waste. Thus, it is possible to suppress the mixing of foreign matter into the package.

[0023] Effects of the Invention

[0024] In the yarn winding device of the present invention, the power consumption of the suction device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a diagram showing the structure of an automatic winder.

[0026] Figure 2 It is a diagram showing the structure of a yarn winding device.

[0027] Figure 3 This is a flowchart showing the flow of processing when yarn breakage is detected.

[0028] Figure 4 This is a timing diagram when yarn breakage is detected.

[0029] Figure 5 This is a flowchart showing the flow of yarn defect processing.

[0030] Figure 6 It is a timing diagram when a yarn defect is detected.

[0031] Figure 7 This is a flowchart showing the flow of the yarn running stop process.

[0032] Figure 8 This is a timing chart when the yarn travel stop is detected. DETAILED DESCRIPTION

[0033] 1. First Implementation Method

[0034] (1) Composition of automatic winding machine

[0035] The first embodiment of the present invention is described in detail below. Figure 1 The structure of the automatic winder 1 according to the first embodiment will be described. Figure 1 It is a diagram showing the structure of the automatic winder 1.

[0036] The automatic winder 1 includes a plurality of aligned yarn winding devices 10. Each yarn winding device 10 traverses the yarn 14 while unwinding the yarn 14 from the yarn supply bobbin 16 to form a package 22. The configuration and operation of the yarn winding device 10 will be described in detail later.

[0037] The automatic winder 1 is provided with a machine control device 12. The machine control device 12 can communicate with each yarn winding device 10. The operator of the automatic winder 1 can manage a plurality of yarn winding devices 10 at once by appropriately operating the machine control device 12. The machine control device 12 is provided with a display 12a and an input interface 12b. The display 12a displays information related to the setting content and / or status of the yarn winding device 10. The operator can perform setting operations of the yarn winding device 10 by performing appropriate operations using the input interface 12b.

[0038] The display 12a is a display device such as a liquid crystal display. The input interface 12b is an input device such as an input key or a touch panel. The display 12a and the input interface 12b which is a touch panel may be integrated.

[0039] The automatic winder 1 includes a doffing device 13. When the package 22 in each yarn winding device 10 becomes fully wound (a state in which a predetermined amount of yarn is wound), the doffing device 13 moves to the position of the yarn winding device 10, removes the fully wound package, and sets an empty winding bobbin.

[0040] (2) Structure of the yarn winding device

[0041] Below, use Figure 2 The details of the structure of the yarn winding device 10 according to the first embodiment will be described. Figure 2As shown, the yarn winding device 10 includes a main body of the yarn winding device 10 having a yarn supply section 15 and a winding section 17, and a unit control section (control section) 50. The yarn winding device 10 of the first embodiment is a drum-type yarn winding device 10, but the yarn winding device 10 may also be an arm traverse type winding device or a belt traverse type winding device. In addition, the yarn winding device 10 of the first embodiment is mounted on the automatic winder 1, but the yarn winding device 10 may also be mounted on, for example, an air spinning frame or a free-end spinning frame.

[0042] The yarn winding device 10 has a yarn supply section 15 at the lower part. In other words, the yarn winding device 10 has the yarn supply section 15 upstream in the traveling direction of the yarn 14 when the yarn is wound. The yarn supply section 15 supplies the yarn 14 for forming the package 22 to the winding section 17. Specifically, the yarn supply section 15 is a conveyor tray type supply mechanism that supports the yarn supply bobbin 16 placed on a conveyor tray (not shown) at a specified position and supplies the yarn supply bobbin 16 to the specified position. The yarn supply section 15 is not limited to a conveyor tray type supply mechanism, and may be, for example, a magazine type supply mechanism. In addition, the position of the yarn supply section 15 is not limited to the lower part.

[0043] The yarn 14 is pulled out from the yarn supply bobbin 16 supported by the yarn supply section 15 by the winding section 17. The pulled out yarn 14 is wound into a package 22 by the winding section 17.

[0044] The yarn winding device 10 has a winding section 17 at the upper part. In other words, the yarn winding device 10 has the winding section 17 downstream in the traveling direction of the yarn 14 when winding the yarn. The winding section 17 includes a cradle 18 and a winding drum 20 as main components. In addition, the position of the winding section 17 is not limited to the upper part.

[0045] The cradle 18 supports the package 22 rotatably around a predetermined axis by sandwiching the package 22 from both ends in the longitudinal direction of the package 22 with a pair of rotation support portions (not shown).

[0046] The winding drum 20 is a cylindrical member that is driven to rotate about an axis by a first motor 21. The winding drum 20 is driven to rotate while the outer periphery of the package 22 is in contact with the winding drum 20, thereby applying a driving force to the package 22, and the package 22 is driven to rotate along with the rotation of the winding drum 20.

[0047] Furthermore, a spiral traverse groove is formed on the side surface of the cylinder of the winding drum 20. While the winding drum 20 is driven to rotate, the package 22 is driven to rotate, and the yarn 14 unwound from the yarn supply bobbin 16 traverses with a certain width on the surface of the package 22 through the traverse groove. Thus, the yarn 14 supplied by unwinding from the yarn supply bobbin 16 is wound while traversing on the surface of the package 22. As a result, a package 22 having a certain winding width is formed.

[0048] The yarn winding device 10 includes a yarn unwinding assisting device 25, a tension applying device 27, a yarn splicing device 38, a yarn clearer (detecting section) 40, and a yarn catching device (suction section) 44 in this order from the yarn supplying section 15 toward the winding section 17.

[0049] The yarn unwinding assisting device 25 restricts the expansion (balloon) of the yarn 14 being unwound, and stabilizes the unwinding tension. The yarn unwinding assisting device 25 includes a movable cylinder 26. The yarn unwinding assisting device 25 assists in unwinding the yarn 14 from the yarn supplying bobbin 16 by lowering the movable cylinder 26, which is mounted on the core tube of the yarn supplying bobbin 16, in conjunction with the yarn 14 being unwound from the yarn supplying bobbin 16. The movable cylinder 26 contacts the balloon formed on the upper portion of the yarn supplying bobbin 16 by the rotation of the yarn 14 being unwound from the yarn supplying bobbin 16 and the centrifugal force, and applies appropriate tension to the balloon, thereby assisting in unwinding the yarn 14.

[0050] The tension applying device 27 applies a predetermined tension to the traveling yarn 14. As the tension applying device 27, for example, a shed-type device in which movable comb teeth are arranged relative to fixed comb teeth can be used. The comb teeth on the movable side are configured in a state of meshing or releasing the comb teeth with each other. By making the yarn 14 pass between the meshing comb teeth while bending, a certain tension can be applied to the wound yarn 14, thereby improving the quality of the package 22. In addition, in addition to the above-mentioned shed-type, the tension applying device 27 can also adopt a disc-type device, for example.

[0051] The splicing device 38 splices the upper yarn on the package 22 side with the lower yarn on the yarn supply bobbin 16 side when the yarn is cut due to yarn defect detection by the yarn clearer 40 or when the yarn is broken during unwinding from the yarn supply bobbin 16. In the following description, the action of the splicing device 38 splicing the upper yarn with the lower yarn is referred to as a splicing action. The splicing device 38 is, for example, a splicer device that twists the yarn ends with each other by a swirling airflow generated by compressed air.

[0052] The yarn winding device 10 has an upper yarn catching section 30 downstream in the traveling direction of the yarn 14 when the yarn splicing device 38 is winding the yarn. The upper yarn catching section 30 is a device that catches the yarn end of the yarn 14 (upper yarn) on the package 22 side by suction when the yarn 14 is in a cut state. The upper yarn catching section 30 has a shaft 31, a tube 32, and a suction catching section 33. The tube 32 and the suction catching section 33 are swiveled around the shaft 31 and can be moved from a standby position ( Figure 2 The solid line) rotates (moves) to the capture position ( Figure 2 In the following description, the yarn end of the upper yarn is sometimes referred to as the upper yarn end.

[0053] In addition, in the upper yarn catching portion 30, a suction device 19 is connected to the shaft portion 31 of the tube portion 32, and a suction flow based on suction force is generated in the suction catching portion 33 (more specifically, the suction port at the front end). In the present embodiment, as the suction device 19, there are: a duct 191 extending along the parallel arrangement direction of each yarn winding device 10 on the back side of each yarn winding device 10; and a suction source 193 connected to one end of the duct 191 so that the inside of the duct 191 becomes a predetermined negative pressure. The shaft portion 31 is connected to the suction source 193 via the duct 191. The suction source 193 is, for example, a blower device. The suction catching portion 33 is slenderly formed in a manner including the winding width of the package 22. As a result, a suction flow can be applied to the entire winding width direction of the outer peripheral surface of the package 22.

[0054] By such a configuration, the upper yarn catching section 30 can, at the catching position, utilize the suction flow generated by the suction catching section 33 to suck and catch the yarn end of the package 22 into the tube section 32. In addition, by returning to the standby position, the captured yarn 14 can be guided to the yarn splicing device 38.

[0055] The yarn winding device 10 is provided with a yarn detection sensor 45. The yarn detection sensor 45 is arranged near the winding section 17. The yarn detection sensor 45 detects whether the upper yarn catching section 30 catches the upper yarn. When the yarn detection sensor 45 detects that the upper yarn catching section 30 catches the upper yarn, it outputs a yarn detection signal to the unit control section 50.

[0056] The yarn winding device 10 has a lower yarn catching portion 34 upstream in the traveling direction of the yarn 14 when the yarn is wound by the yarn splicing device 38. The lower yarn catching portion 34 is the same as the upper yarn catching portion 30, and has a shaft portion 35, a tube portion 36, and a suction catching portion 37. The suction catching portion 37 is the same as the suction catching portion 33 of the upper yarn catching portion 30, and can rotate around the shaft portion 35 as the rotation center, and can generate a suction flow by suction. With this configuration, the lower yarn catching portion 34 can capture the yarn end of the yarn 14 (lower yarn) on the yarn supply portion 15 side by the suction flow, and guide the captured yarn 14 to the yarn splicing device 38. In addition, in the following description, the yarn end of the lower yarn is sometimes referred to as the lower yarn end.

[0057] In addition, the lower yarn catching part 34 is the same as the upper yarn catching part 30, for example, it can also have a gate at the connection part between the tube part 36 and the pipeline 191 to control whether the above-mentioned suction flow is generated.

[0058] The yarn clearer 40 monitors the state of the yarn 14 traveling on the yarn traveling path between the yarn supply unit 15 and the winding unit 17 with a sensor, and detects the presence of a yarn defect based on the monitored information. The yarn clearer 40 detects, for example, abnormal thickness of the yarn 14 and / or foreign matter contained in the yarn 14 as a yarn defect.

[0059] Specifically, the yarn clearer 40 includes: a yarn clearer head 41, which is provided with an optical sensor (not shown) for detecting the thickness of the yarn 14; and an analyzer 43, which processes the yarn thickness signal from the optical sensor. In addition, the sensor is not limited to an optical sensor, and may be a capacitive sensor. The analyzer 43 is electrically connected to the unit control unit 50. The yarn clearer head 41 has a slit for the yarn 14 to pass through on the yarn travel path of the yarn 14, and monitors the yarn 14 passing through the slit by the optical sensor (not shown). For example, when the amount of light detected by the optical sensor is too large (the yarn 14 is too thin or yarn breakage occurs) or too small (the yarn 14 is too thick) compared to the above-mentioned prescribed range, the analyzer 43 outputs a yarn defect signal to the unit control unit 50. In addition, a cutter (cutting unit) 42 is provided near the yarn clearer head 41, and the cutter 42 is used to cut the yarn 14 immediately when the analyzer 43 detects a yarn defect.

[0060] The yarn clearer 40 detects yarn breakage, that is, the presence or absence of the yarn 14 on the yarn traveling path. Specifically, the analyzer 43 outputs a yarn presence signal to the unit control section 50 when the amount of light detected by the optical sensor is normal within a predetermined range.

[0061] The yarn clearer 40 monitors the state of the yarn 14 through a sensor to detect whether the yarn 14 is traveling. Specifically, the analyzer 43 detects whether the thickness of the yarn 14 changes based on the change in the amount of light detected by the optical sensor. When the analyzer 43 detects that the thickness of the yarn 14 does not change, it outputs a yarn stop signal to the unit control unit 50.

[0062] A cutter 42 for cutting the yarn 14 and an injection unit 111 for injecting air toward the traveling yarn 14 are provided near the yarn clearer 40. In addition, the cutter 42 and the injection unit 111 may also be provided in the yarn clearer 40. The unit control unit 50 controls the analyzer 43, thereby operating the cutter 42. When the analyzer 43 cuts the yarn 14, it outputs a cutting signal to the unit control unit 50. The injection unit 111 brings the nozzle for injecting compressed air close to the yarn traveling path in the yarn clearer 40, and the other end of the injection unit 111 is connected to the air supply device 114 via the air flow path 112 and the valve 113. The valve 113 is electrically connected to the unit control unit 50, and opens and closes the air flow path 112 based on the control signal. The injection unit 111 blows away the fiber scraps in the yarn traveling path in the yarn clearer 40 by injecting compressed air from the nozzle.

[0063] The yarn catcher 44 is arranged at a position downstream of the cutter 42 in the traveling direction of the yarn 14 when the yarn is wound. The yarn catcher 44 is a tubular component, and a suction port is formed at the front end close to the yarn travel path. In addition, the base end of the yarn catcher 44 is connected to the suction source 193 via the duct 191. Therefore, a suction flow based on suction force can be generated at the suction port of the yarn catcher 44. The yarn catcher 44 acts on the yarn 14 traveling on the yarn travel path to suck and remove the waste yarn, flying waste, and foreign matter such as flying waste suspended in the air attached to the yarn 14.

[0064] The yarn winding device 10 has a gate 194 at the connection portion between the tube portion 32 and the yarn catcher 44 and the duct 191. The gate 194 switches between connecting the flow path 192a from the tube portion 32 to the duct 191 in an open state or connecting the flow path 192b from the yarn catcher 44 to the duct 191 in an open state. In addition, the gate 194 can also close both the flow path 192a and the flow path 192b.

[0065] Specifically, when the gate 194 closes the flow path 192a, no suction flow is generated in the suction and catching portion 33. On the other hand, when the flow path 192a is opened, a suction flow is generated in the suction and catching portion 33. Furthermore, when the gate 194 closes the flow path 192b, no suction flow is generated in the suction port of the yarn catcher 44. On the other hand, when the flow path 192b is opened, a suction flow is generated in the suction port of the yarn catcher 44.

[0066] The gate 194 is electrically connected to the unit control unit 50. The unit control unit 50 switches the opening and closing states of the flow paths 192a and 192b by controlling the gate 194 to switch the suction ports of the suction and catching unit 33 and the yarn catcher 44 to a stop state or a suction state. The stop state indicates a state where no suction flow is generated, and the suction state indicates a state where a suction flow is generated.

[0067] In the following description, the action of the gate 194 switching the flow path 192b from the closed state to the open state is referred to as the suction start action. In other words, the suction start action is the action of switching the suction port of the yarn catcher 44 from the stopped state to the suction state. In addition, the action of the gate 194 switching the flow path 192b from the open state to the closed state is referred to as the suction stop action. In other words, the suction stop action is the action of switching the suction port of the yarn catcher 44 from the suction state to the stopped state.

[0068] (3) Flow of package forming process when yarn breakage is detected

[0069] Secondly, refer to Figure 2 as well as Figure 3The operation of the yarn winding device 10 in the winding step will be described. Figure 3 1 is a flowchart showing the flow of processing performed when a yarn breakage occurs in the yarn winding device 10. Figure 3 , Figure 5 as well as Figure 7 The flowchart shown is only an example, and may be appropriately changed within a range that is not contradictory. For example, other steps not shown may be included before and after each step, and the order of each step may be appropriately changed within a range that is not contradictory. In the following description, the rotation of the yarn 14 of the package 22 in the winding direction is referred to as forward rotation, and the rotation in the unwinding direction is referred to as reverse rotation.

[0070] During the winding process of winding the yarn 14 into the package 22, the yarn clearer 40 detects yarn breakage, that is, the presence or absence of the yarn 14 on the yarn travel path. In the present embodiment, yarn breakage includes the cutting of the yarn 14 when a yarn defect is detected and the disconnection of the yarn 14 when the yarn travel stops. When the analyzer 43 detects that the amount of light detected by the optical sensor is normal within a prescribed range, it outputs a yarn presence signal to the unit control unit 50. In the present embodiment, during the winding process, the suction port of the yarn catcher 44 is in a suction state.

[0071] The unit control section 50 determines whether the yarn 14 is broken based on whether a yarn presence signal indicating the presence of the yarn 14 is input from the yarn clearer 40 (step S101).

[0072] If it is determined that no yarn breakage has occurred (YES in step S101), the unit control section 50 rotates the package 22 in the forward direction at a predetermined winding speed (the rotation speed of the package 22 when winding the yarn 14) (step S112). Thus, the yarn 14 is wound to form the package 22.

[0073] On the other hand, when it is determined that a yarn breakage has occurred (in the case of "No" in step S101), the unit control unit 50 controls the first motor 21 to stop the rotation of the package 22. In addition, the unit control unit 50 causes the gate 194 to perform a suction stop action (step S102). As a result, the suction port of the yarn catcher 44 is switched from a suction state to a stop state. When the winding of the yarn 14 to the package 22 stops and the yarn splicing device 38 performs a yarn splicing action, the possibility of yarn waste and the like being mixed into the package 22 is low. Therefore, even if the suction port of the yarn catcher 44 is in a stop state, the effect on the quality of the package 22 is small. Therefore, by stopping the suction port of the yarn catcher 44, the power consumption of the suction device 19 can be reduced.

[0074] The unit control section 50 starts the upper yarn catching section 30 to catch the upper yarn end and the lower yarn catching section 34 to catch the lower yarn end (step S103). Specifically, the unit control section 50 starts the control to rotate the tube section 32 of the upper yarn catching section 30 upward. As a result, the suction catching section 33 reaches Figure 2 When the suction and catching section 33 reaches the upper yarn catching position, the unit control section 50 controls the gate 194 to open the flow path 192a. As a result, the suction and catching section 33 is in the suction state.

[0075] When the suction and capture part 33 reaches the upper yarn catching position, the unit control part 50 further sends a signal to the first motor 21 to rotate the package 22 in the reverse direction. The unit control part 50 rotates the package 22 in the reverse direction by a predetermined amount of rotation while the tube part 32 is moved to the upper upper yarn catching position. Thus, the suction and capture part 33 can make the suction flow act on the surface of the package 22 at a substantially opposite position while being separated from the surface of the package 22 by a predetermined interval. By rotating the package 22 in the reverse direction while the suction and capture part 33 makes the suction flow act on the surface of the package 22, the unwinding of the upper yarn from the package 22 and the suction of the upper yarn end by the suction and capture part 33 are promoted. The upper yarn end on the surface of the package 22 is sucked into the tube part 32 by the action of the suction airflow when passing through the opposite portion to the suction and capture part 33.

[0076] When the unit control section 50 determines that the upper yarn catching section 30 has successfully caught the upper yarn end based on the yarn detection signal output by the yarn detection sensor 45, the unit control section 50 continues the reverse rotation of the package 22 while rotating the tube section 32 downward to move it to the upper yarn end. Figure 2 Thus, the upper yarn captured by the upper yarn capturing portion 30 is guided to the joint device 38.

[0077] On the other hand, the lower yarn end of the broken yarn 14 is captured by the suction airflow generated by the suction and catching portion 37 of the lower yarn catching portion 34. After the lower yarn end is captured, the unit control unit 50 rotates the tube portion 36 upward to move to Figure 2 Thus, the lower yarn captured by the lower yarn capturing portion 34 is guided to the joint device 38.

[0078] When the upper yarn is guided to the yarn joining device 38, the unit control section 50 controls the gate 194 to close the flow path 192a. As a result, the suction port of the suction and catching section 33 stops. At this time, the suction port of the yarn catcher 44 also stops.

[0079] After the upper yarn and the lower yarn are guided to the yarn joining device 38, the unit control section 50 causes the yarn joining device 38 to perform a yarn joining operation (step S104).

[0080] After the yarn splicing device 38 performs the yarn splicing operation, the unit control section 50 sends a drive signal to the first motor 21 to start forward rotation of the package 22 (winding start operation). Thus, winding of the yarn 14 into the package 22 starts (step S105).

[0081] After starting to wind the yarn 14, the unit control section 50 determines the presence or absence of a yarn defect based on the yarn defect signal output by the analyzer 43 (step S106).

[0082] When it is determined that there is a yarn defect (YES in step S106), the unit control section 50 performs a yarn defect process (step S107) described later. The yarn defect process is composed of steps S201 to S205.

[0083] On the other hand, when it is determined that there is no yarn defect (NO in step S106), the unit control section 50 determines whether the running of the yarn 14 has stopped based on the yarn stop signal output by the analyzer 43 (step S108).

[0084] When it is determined that the running of the yarn 14 has stopped (YES in step S108), the unit control section 50 performs a yarn running stop process (step S109) described later. The yarn running stop process is composed of steps S301 to S305.

[0085] On the other hand, when it is determined that the yarn 14 has not stopped running (in the case of "No" in step S108), the unit control section 50 determines whether a predetermined first time has passed since the winding start operation in step S105 (step S110). When the unit control section 50 determines that the predetermined first time has not passed since the winding start operation in step S105 ("No" in step S110), the unit control section 50 repeatedly executes the above-mentioned steps S106 and S108 until the predetermined first time has passed.

[0086] When the unit control unit 50 determines that the prescribed first time has passed since the winding start action of step S105 (the case of "yes" in step S110), the gate 194 performs a suction start action (step S111). In other words, the unit control unit 50 controls so that the suction port of the yarn catcher 44 is in a suction state after the prescribed first time has passed since the winding start action. The prescribed first time is greater than 0.5 seconds and less than 2 seconds. More preferably, it is greater than 0.8 seconds and less than 1.2 seconds. In addition, the prescribed first time is preferably determined based on the time when the travel speed of the yarn 14 becomes the prescribed winding speed. In addition, the determination of whether the prescribed first time has passed is based on the winding start action of step S105 performed last.

[0087] The unit control section 50 accelerates the rotation speed of the package 22 until the package 22 reaches a predetermined winding speed (rotation speed of the package 22 when winding the yarn 14). Thus, the yarn 14 is wound to form the package 22 (step S112).

[0088] The unit control section 50 determines whether the winding of the yarn 14 is completed (step S113). When the unit control section 50 determines that the winding of the yarn 14 is completed, the processing is terminated (in the case of "Yes" in step S113). When the unit control section 50 determines that the winding of the yarn 14 is not completed (in the case of "No" in step S113), the unit control section 50 repeatedly executes the above-mentioned steps S101 to S112 until the winding of the yarn 14 is completed. In addition, for example, when other abnormalities that require the winding of the yarn 14 to be stopped occur in the yarn winding device 10, or when the operator instructs the yarn winding device 10 to stop, the winding of the yarn 14 is also terminated.

[0089] Secondly, refer to Figure 4 The timing chart shown explains in detail the operation of each part of the yarn winding device 10 when yarn breakage occurs in the yarn winding device 10. Figure 4 The operation of the yarn winding device 10 is shown when it is determined in step S106 that there is no yarn defect and in step S108 it is determined that the running of the yarn 14 has not stopped.

[0090] Since the winding process is performed before time t11, the package 22 rotates in the forward direction, the yarn presence signal output by the analyzer 43 is ON, and the suction port of the yarn catcher 44 is in the suction state.

[0091] At time t11, when the yarn presence signal output by the analyzer 43 turns off, the unit control section 50 determines that the yarn breakage has occurred. The unit control section 50 stops the package 22 and stops the gate 194. As a result, the suction port of the yarn catcher 44 is stopped.

[0092] After that, the unit control section 50 starts the catching action of the upper yarn end by the upper yarn catching section 30 and the catching action of the lower yarn end by the lower yarn catching section 34. At time t12, when the suction catching section 33 reaches the upper yarn catching position, the unit control section 50 sends a signal to the first motor 21 to make the package 22 rotate in the reverse direction. In addition, the unit control section 50 controls the gate 194 to open the flow path 192a. As a result, the suction catching section 33 is in the suction state. At this time, the suction port of the yarn catcher 44 is in a stopped state. The upper yarn end on the surface of the package 22 is sucked into the tube 32 by the action of the suction airflow when passing through the opposite part of the suction catching section 33.

[0093] When the upper yarn end and the lower yarn end are guided to the yarn splicing device 38, at time t13, the unit control unit 50 stops the package 22 and causes the yarn splicing device 38 to perform the yarn splicing operation. In addition, the unit control unit 50 controls the gate 194 to close the flow path 192a. As a result, the suction port of the suction and catching unit 33 is stopped. At this time, the suction port of the yarn catcher 44 is also stopped. When the upper yarn and the lower yarn are guided to the yarn splicing device 38, the yarn presence signal output by the analyzer 43 becomes ON.

[0094] When the yarn joining device 38 completes the yarn joining, at time t14, the unit control section 50 sends a drive signal to the first motor 21 to start forward rotation of the package 22 (winding start operation). Thus, winding of the yarn 14 into the package 22 starts.

[0095] At time t15 after a predetermined first time has passed since the winding start operation, the unit control unit 50 causes the gate 194 to start the suction operation. As a result, the suction port of the yarn catcher 44 is in the suction state. As described above, the predetermined first time from t14 to t15 is 0.5 seconds or more and 2 seconds or less. More preferably, it is 0.8 seconds or more and 1.2 seconds or less.

[0096] Here, for example, when the yarn 14 wound on the yarn supply bobbin 16 is less than the remaining yarn 14, and when the yarn is broken due to some reason, the yarn end may pass near the suction port of the yarn catcher 44 after the winding operation starts and before the rotation speed of the package 22 reaches the predetermined winding speed. After the winding operation starts and before the rotation speed of the package 22 reaches the predetermined winding speed, the yarn 14 is slow in travel speed, so when the yarn catcher 44 is in the suction state, the yarn 14 may be sucked and caught by the suction port of the yarn catcher 44. If the yarn 14 on the package 22 side is caught by the upper yarn catching section 30 in such a state, the yarn 14 may be caught twice by the upper yarn catching section 30. As a result, the yarn 14 may fail to be joined, or yarn waste generated by pulling out the yarn 14 that is not needed in the joint may be mixed into the package 22.

[0097] In the present embodiment, since the suction port of the yarn catcher 44 is in the suction state after a predetermined first time has passed since the winding start operation, it is possible to suppress a yarn splicing failure and the mixing of foreign matter into the package 22.

[0098] (4) Package forming process when yarn defects are detected

[0099] Next, the yarn defect processing in step S107 will be described in detail. The yarn defect processing is a process performed when the unit control section 50 determines that there is a yarn defect (in the case of "YES" in step S106), and is composed of steps S201 to S205.

[0100] As described above, the yarn winding device 10 of this embodiment makes the suction port of the yarn catcher 44 enter the suction state after the predetermined first time has passed after the winding start action. In other words, the suction port of the yarn catcher 44 is in the stopped state at the predetermined first time after the winding start action. Figure 5 The flowchart shown in the figure explains the flow of processing performed when a yarn defect is detected when the suction port of the yarn catcher 44 is in a stopped state.

[0101] Even if the suction port of the yarn catcher 44 is in a stopped state, the yarn clearer 40 monitors the state of the traveling yarn 14 through the optical sensor during the winding process of winding the yarn 14 into the package 22. The analyzer 43 detects the presence or absence of a yarn defect based on the amount of light detected by the optical sensor. When the analyzer 43 detects a yarn defect, it outputs a yarn defect signal to the unit control unit 50.

[0102] When it is determined that there is a yarn defect based on the yarn defect signal output by the analyzer 43, the unit control unit 50 causes the gate 194 to start suction (step S201). As a result, the suction port of the yarn catcher 44 is switched from the stop state to the suction state. Thereafter, the unit control unit 50 controls the analyzer 43 based on the yarn defect signal to operate the cutter 42 to cut the yarn 14 (step S202). The analyzer 43 outputs a cut signal to the unit control unit 50. Thus, the yarn winding device 10 removes foreign matter such as waste yarn and flying waste generated by the cutting of the yarn 14 by the cutter 42 by the yarn catcher 44 through suction.

[0103] The unit control section 50 starts the catching operation of the upper yarn end by the upper yarn catching section 30 and the catching operation of the lower yarn end by the lower yarn catching section 34 (step S203).

[0104] The unit control section 50 moves the suction and catching section 33 to the upper yarn catching position and causes the shutter 194 to stop suction (step S204). As a result, the suction port of the yarn catcher 44 is switched from the suction state to the stop state.

[0105] Thereafter, the unit control section 50 sends a control signal to the valve 113 to open the air flow path 112, and injects compressed air from the nozzle of the injection section 111 to blow away fiber waste in the yarn traveling path in the yarn clearer 40 (step S205).

[0106] When the yarn defect processing is completed, the process returns to step S104, and the unit control section 50 controls the yarn splicing device 38 to perform the yarn splicing operation.

[0107] Secondly, refer to Figure 6 The timing chart shown explains in detail the operation of each part of the yarn winding device 10 when a yarn defect is detected while the yarn catcher 44 is in the stopped state.

[0108] At the time before time t21, the suction port of the yarn catcher 44 is in a stopped state. At time t21, when the analyzer 43 detects a yarn defect, it outputs a yarn defect signal to the unit control unit 50 (changes from OFF to ON). In addition, the unit control unit 50 controls the analyzer 43 based on the yarn defect signal to operate the cutter 42 to cut the yarn 14. The analyzer 43 outputs a cut signal to the unit control unit 50.

[0109] When the yarn 14 is cut, at time t22, the yarn signal turns OFF. The unit control section 50 causes the gate 194 to start suction. As a result, the suction port of the yarn catcher 44 switches from the stop state to the suction state. In addition, the unit control section 50 sends a signal to the first motor 21 to stop the package 22.

[0110] Afterwards, at time t23, the unit control section 50 starts the catching action of the upper yarn end by the upper yarn catching section 30 and the catching action of the lower yarn end by the lower yarn catching section 34. The unit control section 50 moves the suction catching section 33 to the upper yarn catching position and causes the gate 194 to perform the suction stop action. As a result, the suction port of the yarn catcher 44 is switched from the suction state to the stop state. Thus, the power consumption of the suction device 19 can be reduced.

[0111] When the suction and catching section 33 reaches the upper yarn catching position, the unit control section 50 sends a signal to the first motor 21 to rotate the package 22 in the reverse direction. In addition, the unit control section 50 controls the gate 194 to open the flow path 192a. As a result, the suction and catching section 33 is in the suction state. When the upper yarn end on the surface of the package 22 passes through the portion facing the suction and catching section 33, it is sucked into the tube section 32 by the action of the suction airflow. In addition, the suction stop action and the control to open the flow path 192a may be performed simultaneously.

[0112] When the upper yarn catching section 30 successfully catches the upper yarn end, the yarn detection signal turns on at time t24. At time t25, the unit control section 50 sends a control signal to the valve 113 to open the air flow path 112 and inject compressed air from the nozzle of the injection section 111 to blow away the fiber scraps.

[0113] When the upper yarn and the lower yarn are guided to the jointing device 38, at time t26, the unit control unit 50 stops the package 22 and causes the jointing device 38 to perform the jointing operation. In addition, the unit control unit 50 controls the gate 194 to close the flow path 192a. As a result, the suction port of the suction and catching unit 33 is stopped. At this time, the suction port of the yarn catcher 44 is also stopped. When the upper yarn is guided to the jointing device 38, the yarn signal output by the analyzer 43 becomes ON.

[0114] When the yarn joining device 38 completes the yarn joining, at time t27, the unit control section 50 sends a drive signal to the first motor 21 to start forward rotation of the package 22 (winding start operation). Thus, winding of the yarn 14 into the package 22 starts.

[0115] Foreign matters such as yarn waste and flying fibers are easily generated at the timing when the cutter 42 cuts the yarn 14. In the present embodiment, even if the suction port of the yarn catcher 44 is in a stopped state, the yarn catcher 44 is placed in a suction state in accordance with the timing when the cutter 42 cuts the yarn 14. Thus, it is possible to suppress foreign matters from being mixed into the package 22. In addition, since air is ejected from the ejector 111 when the suction port of the yarn catcher 44 is in a stopped state, it is easy to blow away fiber scraps in the yarn travel path in the yarn clearer 40.

[0116] (5) Flow of package forming process when yarn travel stop is detected

[0117] Next, the yarn running stop processing of step S109 will be described in detail. The yarn running stop processing is a process when the unit control section 50 determines that the yarn 14 has stopped running (if "YES" in step S108), and is composed of steps S301 to S305. Figure 7 The flowchart shown in the figure explains the flow of processing performed when the running stop of the yarn 14 is detected when the suction port of the yarn catcher 44 is in the stopped state.

[0118] Even if the suction port of the yarn catcher 44 is in a stopped state, the yarn clearer 40 monitors the state of the traveling yarn 14 through the optical sensor to detect whether the yarn 14 is traveling. For example, when the yarn 14 is wound, if a yarn break occurs at a position downstream of the yarn clearer 40 in the traveling direction of the yarn 14, the yarn clearer 40 detects the lower yarn on the yarn supply bobbin side and outputs a yarn signal to the unit control unit 50. In this case, since the lower yarn is not wound by the winding unit 17, the yarn 14 detected by the yarn clearer 40 stops traveling. The analyzer 43 detects whether the thickness of the yarn 14 changes based on the change in the amount of light detected by the optical sensor. When the analyzer 43 detects that the thickness of the yarn 14 does not change, it outputs a yarn stop signal to the unit control unit 50.

[0119] When it is determined that the yarn 14 has stopped moving based on the yarn stop signal output by the analyzer 43, the unit control unit 50 causes the gate 194 to start suction (step S301). As a result, the suction port of the yarn catcher 44 is switched from the stop state to the suction state. Thereafter, the unit control unit 50 controls the analyzer 43 based on the yarn stop signal to operate the cutter 42 to cut the yarn 14 (step S302). The analyzer 43 outputs a cut signal to the unit control unit 50. Thus, the yarn winding device 10 can remove foreign matter such as waste yarn and flying waste generated by the cutting of the yarn 14 by the cutter 42 through the yarn catcher 44.

[0120] Steps S303 to S305 are the same as steps S203 to S205, and thus their description is omitted. When the yarn running stop process is completed, the process returns to step S104, and the unit control section 50 causes the yarn splicing device 38 to perform the yarn splicing operation.

[0121] Secondly, refer to Figure 8 The timing chart shown in FIG. 1 describes in detail the operation of each part of the yarn winding device 10 when the yarn catcher 44 is in the stopped state and the running stop of the yarn 14 is detected.

[0122] At the time before time t31, the suction port of the yarn catcher 44 is in a stopped state. At time t31, when the analyzer 43 detects that the yarn 14 stops traveling, it outputs a yarn stop signal to the unit control unit 50 (changes from OFF to ON). In addition, the unit control unit 50 controls the analyzer 43 based on the yarn stop signal to operate the cutter 42 to cut the yarn 14. The analyzer 43 outputs a cut signal to the unit control unit 50.

[0123] The period from time t32 to time t37 is the same as the period from time t22 to time t27 described above, and thus the description thereof will be omitted.

[0124] Foreign matters such as yarn waste and flying fibers are easily generated at the timing when the cutter 42 cuts the yarn 14. In the present embodiment, even if the suction port of the yarn catcher 44 is in a stopped state, the yarn catcher 44 is placed in a suction state in accordance with the timing when the cutter 42 cuts the yarn 14. Thus, it is possible to suppress foreign matters from being mixed into the package 22. In addition, since air is ejected from the ejector 111 when the suction port of the yarn catcher 44 is in a stopped state, it is easy to blow away fiber scraps in the yarn travel path in the yarn clearer 40.

[0125] 3. Features of the implementation method

[0126] The above-mentioned first embodiment has the following configuration and function.

[0127] The yarn winding device 10 includes a yarn supply unit 15, a winding unit 17, a yarn splicing device 38, a yarn catcher 44, and a unit control unit 50. The yarn supply unit 15 supplies the yarn 14. The winding unit 17 winds up the yarn 14 supplied from the yarn supply unit 15 to form a package 22. The yarn splicing device 38 splices the yarn end on the yarn supply unit 15 side with the yarn end on the package 22 side. The yarn catcher 44 is arranged between the yarn splicing device 38 and the winding unit 17 to attract the yarn 14.

[0128] The unit control unit 50 controls so that the yarn splicing action, the winding start action, and the suction start action are performed in sequence, and controls so that the suction start action is performed after a predetermined first time has passed after the winding start action. The yarn splicing action is the action of the yarn splicing device 38 performing the yarn splicing. The winding start action is the action of the winding unit 17 starting to wind the yarn 14 onto the package 22. The suction start action is the action of switching the yarn catcher 44 from the stop state to the suction state.

[0129] The yarn winding device 10 stops the yarn catcher 44 at a predetermined first time after the winding start operation. This can reduce the operating time of the suction device 19 and thus reduce the power consumption of the suction device 19. In addition, the failure of the yarn splicing and the mixing of foreign matter into the package 22 are suppressed.

[0130] The yarn winding device 10 is controlled so that the yarn catcher 44 is stopped before the yarn joining operation is performed.

[0131] The yarn winding device 10 reduces the power consumption of the suction device 19.

[0132] The yarn winding device 10 is further provided with a yarn clearer 40 and a cutter 42. The yarn clearer 40 monitors the state of the traveling yarn 14. In addition, the state of the yarn 14 includes the presence or absence of yarn defects and whether the yarn 14 is traveling. The cutter 42 cuts the yarn 14. The yarn catcher 44 is arranged at a position downstream of the cutter 42 in the traveling direction of the yarn 14 when the yarn is wound. The unit control section 50 controls the cutter 42 to cut the yarn 14 based on the detection result of the yarn clearer 40, and controls the yarn catcher 44 to be in a suction state.

[0133] The yarn winding device 10 places the yarn catcher 44 in a suction state in accordance with the timing of cutting the yarn 14, which is prone to generate foreign matter such as yarn waste and fly waste.

[0134] The yarn winding device 10 further includes an ejector 111 that ejects air into the space where the yarn supply 14 of the yarn clearer 40 travels. The unit control unit 50 controls the cutter 42 to cut the yarn 14 and controls the yarn catcher 44 to be in a suction state. The unit control unit 50 then controls the yarn catcher 44 to be in a stopped state. The unit control unit 50 then controls the ejector 111 to eject air.

[0135] The yarn winding device 10 puts the yarn catcher 44 in a suction state while cutting the yarn 14, and then switches to a stop state to eject air through the ejection unit 111. Since the suction stops when ejecting air, foreign matter such as back yarn and flying waste is easily blown away.

[0136] 2. Modifications

[0137] In the following description, only the configuration different from that of the present embodiment will be described.

[0138] (1) Modification A

[0139] In the first embodiment, the unit control unit 50 controls the gate 194 to stop the suction at time t11, and controls the gate 194 to open the flow path 192a at time t12. However, the unit control unit 50 may control the gate 194 to open the flow path 192a at time t12, and control the gate 194 to stop the suction. As a result, the suction and catching unit 33 is in the suction state, and the suction port of the yarn catcher 44 is also in the stop state.

[0140] In this modification, since the flow path 192 a and the flow path 192 b are switched at one time, the number of times the unit control unit 50 controls the gate 194 can be reduced.

[0141] (2) Modification B

[0142] In the first embodiment, when it is determined that there is a yarn defect, the unit control section 50 causes the gate 194 to start suction, and then causes the cutter 42 to operate to cut the yarn 14. However, the unit control section 50 may cause the gate 194 to start suction after causing the cutter 42 to operate to cut the yarn 14.

[0143] In this modification, the yarn winding device 10 can remove foreign matters such as yarn waste and flying fibers generated by cutting the yarn 14 by the cutter 42 by suction through the yarn catcher 44. In addition, mixing of foreign matters into the package 22 can be suppressed.

[0144] (3) Modification C

[0145] In the first embodiment, when it is determined that the yarn 14 has stopped running, the unit control section 50 causes the gate 194 to start suction, and then causes the cutter 42 to operate to cut the yarn 14. However, the unit control section 50 may cause the gate 194 to start suction after causing the cutter 42 to operate to cut the yarn 14.

[0146] In this modification, the yarn winding device 10 can remove foreign matters such as yarn waste and flying fibers generated by cutting the yarn 14 by the cutter 42 by suction through the yarn catcher 44. In addition, mixing of foreign matters into the package 22 can be suppressed.

[0147] (4) Modification D

[0148] In the first embodiment, the unit control unit 50 causes the gate 194 to perform a suction start operation ( Figure 3 Then, the unit control unit 50 may also make the gate 194 perform a suction stop action when the package 22 is formed after a predetermined second time has passed since the suction start action. As a result, the suction port of the yarn catcher 44 is switched from the suction state to the stop state. By making the suction port of the yarn catcher 44 stop during the winding process, the power consumption of the suction device 19 can be reduced.

[0149] (5) Modification E

[0150] The package forming process when a yarn defect is detected in the first embodiment is a process performed when a yarn defect is detected when the suction port of the yarn catcher 44 is in a stopped state. In other words, this process can also be performed in the winding process of the modified example D when a yarn defect is detected when the suction port of the yarn catcher 44 is in a stopped state.

[0151] (6) Modification F

[0152] The package forming process when the yarn 14 stops traveling in the first embodiment is a process performed when the yarn 14 stops traveling when the suction port of the yarn catcher 44 is in a stopped state. In other words, this process can also be performed in the winding process of the modified example D when the yarn 14 stops traveling when the suction port of the yarn catcher 44 is in a stopped state.

[0153] (7) Modification G

[0154] In the first embodiment, after the unit control unit 50 causes the gate 194 to stop suction, it sends a control signal to the valve 113 to open the air flow path 112 and inject compressed air from the nozzle of the injection unit 111 ( Figure 5 Step S205, Figure 7However, the unit control unit 50 may not cause the gate 194 to stop suction, but may eject compressed air from the nozzle of the ejection unit 111. The unit control unit 50 does not cause the gate 194 to stop suction, and accordingly the cycle time becomes faster.

[0155] 3. Other Implementation Methods

[0156] An embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. In particular, the multiple embodiments and modifications described in this specification can be arbitrarily combined as needed.

[0157] Industrial Applicability

[0158] The yarn winding device of the present invention can be applied to an automatic winder, an air spinning machine, and a free-end spinning machine that arrange and utilize a plurality of yarn winding devices. In the case of the air spinning machine and the free-end spinning machine, a cutter may not be provided as a cutting section, and the yarn may be cut by stopping the spinning as the cutting section. In addition, the yarn winding device of the present invention can be applied to a fiber machine that manufactures fibers having a large width.

Claims

1. A yarn winding device, characterized in that: have: A yarn supplying section, supplying yarn; a winding section for winding the yarn supplied from the yarn supply section to form a package; a yarn splicing device for splicing the yarn on the yarn supplying portion side with the yarn on the package side; a suction unit disposed between the yarn joining device and the winding unit and configured to suck the yarn; and Control Department, The control unit controls so that the jointing action of the jointing device, the winding start action of the winding unit starting to wind the yarn into the package, and the suction start action of switching the suction unit from a stop state to a suction state are performed in sequence, and controls so that the suction start action is performed after a specified first time has passed after the winding start action.

2. The yarn winding device according to claim 1, characterized in that: The control unit performs control so as to bring the suction unit into a stopped state before performing the yarn joining operation.

3. The yarn winding device according to claim 1 or 2, characterized in that: The control section performs control so as to stop the suction section when the package is formed after a predetermined second time has elapsed from the start of the suction operation.

4. The yarn winding device according to any one of claims 1 to 3, characterized in that: The yarn winding device further comprises: a detection unit for detecting a state of the traveling yarn; and A cutting section cuts the yarn. The suction section is disposed downstream of the cutting section in the traveling direction of the yarn when the yarn is wound. The control section controls the cutting section to cut the yarn based on the detection result of the detection section, and controls the suction section to be in a suction state.

5. The yarn winding device according to claim 4, characterized in that: The yarn winding device further includes a jet unit that jets air toward a space in the detection unit where the yarn travels. The control unit is: controlling the cutting section to cut the yarn, and controlling the suction section to be in a suction state, After that, the suction unit is controlled to be in a stopped state. Thereafter, the injection unit is controlled to inject air.

6. The yarn winding device according to claim 4, characterized in that: The yarn winding device further includes a jet unit that jets air toward a space in the detection unit where the yarn travels. The control unit is: controlling the cutting section to cut the yarn, and controlling the suction section to be in a suction state, Thereafter, the injection unit is controlled to inject air.

7. A yarn winding device, characterized in that: have: A yarn supplying section, supplying yarn; a winding section for winding the yarn supplied from the yarn supply section to form a package; a yarn splicing device for splicing the yarn on the yarn supplying portion side with the yarn on the package side; A suction section, disposed between the splicing device and the take-up section, for sucking the yarn; Control Department; A detection unit for detecting a state of the traveling yarn; as well as A cutting section cuts the yarn. The suction section is disposed downstream of the cutting section in the traveling direction of the yarn when the yarn is wound. The control unit is: The suction section is controlled so as to be stopped when the package is formed. Based on the detection result of the detection section, the cutting section is controlled to cut the yarn, and the suction section is controlled to be in a suction state.

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