Title of invention: Thread winder
Technical field
[0001]
　The present invention relates to a thread winder.
Background technology
[0002]
　Patent Document 1 discloses a winder unit that performs a yarn winding process of winding a yarn supplied from a yarn feeding bobbin on a winding pipe to form a package. The winder unit is arranged between the yarn feeding bobbin and the package in the thread traveling direction, and has a thread splicing device for thread splicing and a needle thread guide pipe for guiding the thread on the package side in the thread traveling direction to the thread splicing device. Be prepared. When a thread breakage or the like occurs, the thread winding process is interrupted, and the thread on the feeding bobbin side and the thread on the winding package side in the thread traveling direction are spliced ​​by the thread splicing device. At the time of thread splicing, the thread on the take-up package side in the thread traveling direction is guided to the thread splicing device while being sucked by the suction mouse provided in the needle thread guide pipe.
[0003]
　Here, after the thread winding process is interrupted, all the threads on the winding package side are usually wound into the package. For this reason, the suction mouse may not be able to suck the thread well, for example, because the end of the thread is strongly attached to the take-up package. When such a defect occurs, it may be necessary for the operator to guide the end of the thread to the suction mouse. At that time, the operator needs to touch the package in order to find the end of the thread. In addition, when a trouble occurs, the operator may need to touch the package or tear the thread wound around the package.
Prior art literature
Patent documents
[0004]
Patent Document 1: Japanese Unexamined Patent Publication No. 2017-190210
Outline of the invention
Problems to be solved by the invention
[0005]
　When the operator touches the package when the above-mentioned problems occur, some of the threads are rolled on the package and the twist of the threads is weakened, so that the thread strength of the part touched by the operator decreases. There is a risk of Further, even when the thread is torn by the operator, a thin thread end may remain in the package and the thread strength may decrease. If the package includes a portion having such a reduced yarn strength (weak yarn portion), there may be a problem that thread breakage is likely to occur in a post-process such as a warping process using a warper.
[0006]
　An object of the present invention is to prevent the package from containing a weak thread portion.
Means to solve problems
[0007]
　The yarn winder of the first invention is a yarn winder that winds a yarn supplied from a yarn feeder to a winding pipe to form a package, and by rotating the package in the normal direction. A winding section capable of winding a thread around the package and pulling out the thread from the package by temporarily reversing the package, and a thread feeding section and the winding section in the thread traveling direction. A thread splicing device that joins a thread that is arranged between the threads and is divided between the thread feeding section and the winding section in the thread running direction, and the thread running direction at the time of the thread splicing. The operator performs a thread capturing guide unit that sucks and captures the yarn on the winding unit side and guides the yarn to the thread joining device, and a restart operation for restarting the yarn winding process when the thread winding process is interrupted. The control unit includes an operation unit and a control unit to be performed, and the control unit reverses the package before causing the thread splicing device to perform the thread splicing, and causes the thread catching guide unit to perform the winding unit side. In the case of the thread splicing immediately after the restart operation, the drawing length for pulling out the thread in the suction process is set to the drawing length without going through the restart operation. It is characterized in that the length is obtained by adding a predetermined additional length to the basic drawing length for pulling out the yarn when splicing is performed.
[0008]
　In the thread winder, if the operator touches the package or takes other measures before the thread splicing performed when the restart operation is performed by the operator, a weak thread portion may be generated in the package. In the present invention, a suction process is performed in which the thread is sucked by the thread catching guide and pulled out from the package before the thread splicing. Therefore, the unnecessary part of the thread is sucked to remove the unnecessary part. can do. Further, in the suction process, the control unit adds an additional length to the pull-out length of the thread at the time of thread splicing immediately after the restart operation and to the basic pull-out length when the thread splicing is performed without the restart operation. Let it be the length. For this reason, immediately after the restart operation, the thread is pulled out from the package for a long time, and the thread is sucked and removed for a long time by the thread catching guide, so that even if a weak thread portion is generated in the package, the weak thread portion remains in the package. Can be suppressed. Therefore, it is possible to prevent the package from containing a weak thread portion.
[0009]
　The thread winder of the second invention is characterized in that, in the first invention, the control unit changes the additional length according to a setting.
[0010]
　In the present invention, since the additional length is changed, the drawer length can be optimized according to, for example, the thread type and the size of the package.
[0011]
　The thread winder of the third invention is characterized in that, in the first or second invention, the control unit changes the drawer length according to the type of defect that requires the restart operation. Is what you do.
[0012]
　In all cases where a problem that requires the operator to deal with and restart the operation occurs, if the thread is sucked for a long time, it is more certain that the weak thread part remains in the package, while the waste lint is discarded. The amount will increase and the cost may increase. In the present invention, since the drawer length is changed according to the type of defect, the thread can be pulled out longer only when some defects occur. Therefore, for example, it is possible to suck the thread for a long time only when a problem that a weak thread portion is likely to occur occurs, and to suck the thread for a short time when a problem that a weak thread portion is unlikely to occur occurs. Therefore, it is possible to suppress an increase in the amount of waste lint and suppress an increase in cost while suppressing the inclusion of a weak thread portion in the package.
[0013]
　The thread winder of the fourth invention is the third invention, in the case where the control unit causes a first defect that the operator may touch the package as the defect in the suction process. When the restart operation is performed, a thread having a length obtained by adding the additional length to the basic drawer length is pulled out at the time of the thread splicing immediately after the restart operation, and as the defect, the operator puts the thread into the package. When a second defect that does not need to be touched occurs, the thread having the basic drawer length is pulled out at the time of the thread splicing immediately after the restart operation when the restart operation is performed. is there.
[0014]
　When the first problem that the operator has to touch the package occurs, weak threads are likely to occur. In the present invention, when such a problem occurs, the drawer length can be lengthened at the time of thread splicing immediately after the restart operation, and the thread can be sucked for a long time by the thread catching guide portion. Can be effectively suppressed from being included in the package. On the other hand, when a second defect that the operator can deal with without touching the package occurs, the occurrence of a weak thread portion can be prevented by not touching the package at all. Therefore, at the time of thread splicing immediately after the restart operation, the drawer length can be set to the basic drawer length, and the thread can be sucked short. Therefore, it is possible to suppress an increase in the amount of waste lint while effectively suppressing the inclusion of the weak thread portion in the package.
[0015]
　In the fourth invention, the thread winder of the fifth invention includes a suction detection unit that detects the thread sucked and captured by the thread capture guide unit, and the first defect is that the thread splicing occurs. An automatic mouth-out error indicating that the suction and capture of the thread by the thread capture guide unit was not detected by the suction detection unit occurs continuously, and the suction and capture of the thread by the thread capture guide unit becomes impossible. It is characterized by including.
[0016]
　When an automatic mouth-out error occurs in which suction and capture of the thread by the thread capture guide unit fails continuously, it is necessary for the operator to find the thread end and guide the thread end to the thread capture guide unit. In this case, since it is necessary for the operator to search for the thread end by stroking the package, the surface of the package may be rubbed and a weak thread portion may be easily generated. In the present invention, when such a defect occurs, the thread can be sucked for a long time by the thread catching guide portion, so that it is possible to particularly effectively suppress the inclusion of the weak thread portion in the package.
[0017]
　In the fourth or fifth aspect of the invention, the thread winder of the sixth invention includes a thread thickness detecting unit that detects the thickness of the thread guided by the thread capturing guide unit to the thread joining device. The first defect is that the thickness of the thread guided to the thread joining device by the thread capturing guide unit at the time of the thread splicing corresponds to the thickness of a plurality of threads by the thread thickness detecting unit. It is characterized by including multiple mouths indicating that it has been detected.
[0018]
　At the time of thread splicing, for example, if a part of the thread wound around the package is loose and the thread end is stuck to the package, the loosened part (the part in the middle different from the thread end) is It may be sucked and captured by the thread capturing guide unit and guided to the thread joining device as it is. In such a case, it appears as if a plurality of threads are sucked and captured (multiple mouths), and the thickness of the threads captured by suction corresponds to the thickness of the plurality of threads. Detected by the part. In order to deal with this problem, the operator needs to find the thread end and suck it into the thread catching guide, so that the operator may need to touch the package. In the present invention, when such a defect occurs, the thread can be sucked for a long time by the thread catching guide portion, so that it is possible to particularly effectively suppress the inclusion of the weak thread portion in the package.
[0019]
　In any one of the first to sixth inventions, the thread winder of the seventh invention is arranged between the suction source and the thread capture guide portion in the suction direction in which the yarn is sucked, and is arranged by the control unit. The control unit includes an opening / closing member that can be switched between a closed state and an open state, and the control unit reverses the package and reverses the package when the thread catching guide unit sucks the thread in the suction process. The opening / closing member is switched to the open state, and the rotation time for reversing the package in order to pull out the thread from the package is measured from the time when the opening / closing member is switched to the open state. It is a thing.
[0020]
　In the present invention, in the suction process, the rotation time count starts when the opening / closing member is opened. Therefore, the package is reversed as compared with the case where the rotation time count starts after the suction capture of the thread is detected, for example. It is possible to shorten the time to make it.
[0021]
　In any one of the first to sixth inventions, the thread winder of the eighth invention is arranged between the suction source and the thread capture guide portion in the suction direction in which the yarn is sucked, and is arranged by the control unit. The control unit includes an opening / closing member that can be switched between a closed state and an open state, and a suction detection unit that detects a thread that has been sucked and captured by the thread capture guide unit. The rotation time for reversing the package and reversing the package in order to switch the closed opening / closing member to the open state and pull out the thread from the package when the thread is sucked into the package. It is characterized in that the measurement is started from the time when the thread sucked and captured by the thread capturing guide unit is detected by the suction detecting unit.
[0022]
　In the present invention, in the suction process, the rotation time count starts from the time when it is detected that the thread is sucked by the thread capture guide, so that the thread can be reliably sucked until the rotation time elapses. The thread of a desired length can be reliably removed by suction.
A brief description of the drawing
[0023]
FIG. 1 is a front view of an automatic winder according to the present embodiment.
[Fig. 2] Fig. 2 is a block diagram showing an electrical configuration of an automatic winder.
[Fig. 3] Fig. 3 is a schematic front view of the take-up unit.
FIG. 4 is a schematic side view of the upper portion of the take-up unit.
FIG. 5 is a diagram showing suction of a thread by a needle thread catching guide.
[Fig. 6] Fig. 6 is an explanatory diagram showing multiple outlets.
FIG. 7 is a table showing defect information and its associated drawer length and rotation time.
FIG. 8 is a flowchart showing an example of control by the unit control unit.
[Fig. 9] Fig. 9 is a diagram showing the difference in drawer length between the case where the restart operation is performed and the case where the restart operation is not performed.
FIG. 10 is a flowchart showing control by the unit control unit according to a modified example.
Mode for carrying out the invention
[0024]
　Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 9. As shown in FIG. 1, the direction in which the plurality of winding units 2 are arranged is the left-right direction, and the direction in which gravity acts is the up-down direction.
[0025]
(Rough Configuration of Automatic Winder)
　First, a schematic configuration of the automatic winder 1 (textile machine of the present invention) will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view of the automatic winder 1 according to the present embodiment. FIG. 2 is a block diagram showing an electrical configuration of the automatic winder 1. The automatic winder 1 includes a plurality of winding units 2 (thread winding machine of the present invention), a ball lifting device 3, and a machine base control device 4.
[0026]
　The plurality of winding units 2 are arranged in the left-right direction, and each of them winds the thread Y drawn from the thread feeding bobbin Bk onto the winding bobbin Bm (see FIG. 3, the winding tube of the present invention), and the package P. The thread winding process for forming the above is performed. The ball lifting device 3 is arranged above the plurality of winding units 2 and is configured to be movable in the left-right direction from the winding unit 2 arranged at the left end to the winding unit 2 arranged at the right end. .. When the ball lifting device 3 receives the full winding signal from the winding unit 2, it moves above the winding unit 2 to remove the full winding package P and the empty winding bobbin Bm. Is attached to the take-up unit 2 and the like.
[0027]
　The machine base control device 4 is arranged on the left side of the plurality of winding units 2. The machine base control device 4 is electrically connected to the unit control unit 60 of the take-up unit 2 and the control unit (not shown) of the hoisting device 3 and communicates with these control units.
[0028]
(Rewinding Unit)
　Next, the configuration of the winding unit 2 will be described with reference to FIGS. 2 and 3. FIG. 3 is a schematic front view of the take-up unit 2. FIG. 4 is a schematic side view of the upper portion of the take-up unit.
[0029]
　As shown in FIG. 3, the winding unit 2 includes a unit main body 10, a yarn feeding unit 20, a yarn processing execution unit 30, a winding unit 40, a display unit 50, and a unit control unit 60 (in the present invention). It has a control unit) and the like. The unit body 10 is a columnar member long in the vertical direction. The thread feeding section 20, the thread processing executing section 30, and the winding section 40 are provided on the unit main body 10, and are arranged side by side from bottom to top in this order. The display unit 50 is provided on the front surface of the upper end portion of the unit main body 10.
[0030]
　The yarn feeding unit 20 is for supplying the yarn Y wound around the yarn feeding bobbin Bk while unwinding. The thread feeding unit 20 has a thread feeding bobbin support portion 21 and a thread unwinding assisting device 22. The thread feeding bobbin support portion 21 supports the thread feeding bobbin Bk in a substantially upright state. The thread feeding bobbin support portion 21 has a configuration capable of discharging the empty thread feeding bobbin Bk. When an empty thread-feeding bobbin Bk is discharged, a new thread-feeding bobbin Bk supplied from the thread-feeding bobbin supply device (not shown) is conveyed by the bobbin transfer device (not shown) to the thread-feeding bobbin support portion 21. Be supplied. The thread unwinding assisting device 22 regulates the swelling when the thread Y is unwound from the thread feeding bobbin Bk by the regulating cylinder 23. The regulation cylinder 23 is configured to move downward as the amount of yarn wound around the thread feed bobbin Bk decreases, and to keep the size of the bulge constant.
[0031]
　The thread processing execution unit 30 is for executing various processes related to the thread Y. The thread processing execution unit 30 includes a yarn feeler 31, a tension applying device 32, a thread joining device 33, and a yarn clearer 34.
[0032]
　The yarn feeler 31 detects the presence or absence of a traveling thread Y between the thread unwinding assisting device 22 and the tension applying device 32. The tension applying device 32 applies a predetermined tension to the traveling thread Y. As an example of the tension applying device 32, a so-called gate type can be mentioned. As shown in FIG. 3, a plurality of fixed gate bodies 32a and a plurality of movable gate bodies 32b are alternately arranged in the vertical direction. Then, by adjusting the positions of the plurality of movable gate bodies 32b in the horizontal direction, a predetermined tension is applied to the thread Y running between the fixed gate body 32a and the movable gate body 32b.
[0033]
　When the thread Y is not connected between the thread feeding section 20 and the winding section 40, the thread joining device 33 has a thread Y (bobbin thread Y1) on the thread feeding section 20 side and a winding section 40. This is for splicing the side thread Y (upper thread Y2). Examples of cases where the yarn Y is not connected include, for example, when the yarn is cut by the cutter 34a when a yarn defect is detected by the yarn clearer 34 described later, when the yarn is broken during winding of the package P, or when the yarn is supplied. There is a time when the thread bobbin Bk is replaced. As an example of the thread joining device 33, a compressed air type can be mentioned. The thread splicing device 33 blows compressed air supplied from an air pressure source (not shown) onto the bobbin thread Y1 and the needle thread Y2, loosens both thread ends once, and then blows compressed air again onto both thread ends to produce the thread. Thread splicing is performed by entwining the ends. Further, the thread joining device 33 has cutters 33a and 33b (see FIG. 4). The cutters 33a and 33b cut the remaining lower thread Y1 and upper thread Y2 on the tip side when the thread splicing is performed by the thread splicing device 33, respectively.
[0034]
　A bobbin thread catching guide 35 that captures the bobbin thread Y1 on the thread feeding bobbin Bk side and guides the bobbin thread Y1 to the thread joining device 33 is provided on the lower side of the thread joining device 33, and a package is provided on the upper side of the thread joining device 33. The needle thread catching guide portion 36 (thread catching guide portion of the present invention) that captures the needle thread Y2 on the P side and guides the needle thread Y2 to the thread joining device 33 is provided. The bobbin thread catching guide portion 35 is arranged at the tip of the pipe-shaped arm 35b that can rotate around the shaft 35a and the tip of the arm 35b, and the suction section 35c that sucks and captures the thread end portion of the bobbin thread Y1 and the arm 35b. It has a motor 37 which is rotationally driven to rotate the motor 37 up and down. The needle thread capture guide portion 36 includes a transparent pipe-shaped arm 36b that can rotate around the shaft 36a, and a suction portion 36c that is arranged at the tip of the arm 36b and sucks and captures the thread end portion of the needle thread Y2. , A motor 38 that rotationally drives the arm 36b to rotate the arm 36b up and down.
[0035]
　As shown in FIG. 4, the bobbin thread capture guide unit 35 and the needle thread capture guide unit 36 ​​are connected to the negative pressure source 103 (suction source of the present invention) via ducts 101 and 102, respectively. An intermediate portion of the duct 102 (that is, between the bobbin thread capture guide portion 35 and the needle thread capture guide portion 36 in the suction direction in which the thread Y is sucked and the negative pressure source 103) is driven by a stepping motor (not shown). A shutter 39 (opening / closing member of the present invention) is arranged. The shutter 39 can switch between an open state in which the needle thread capture guide portion 36 and the negative pressure source 103 communicate with each other and a closed state in which the communication is cut off. When the shutter 39 is opened, a negative pressure is generated in the suction portion 36c of the needle thread capture guide portion 36. The suction portion 35c of the bobbin thread capture guide portion 35 is provided with an opening / closing lid (not shown), and the opening / closing lid is appropriately provided at the capture position where the bobbin thread capture guide portion 35 sucks and captures the bobbin thread Y1. It is opened by contacting the stopper shown in the figure.
[0036]
　At the time of thread splicing by the thread splicing device 33, the needle thread catching guide unit 36 ​​performs the following operations. First, the arm 36b is rotationally driven by the motor 38 to rotate upward, so that the suction portion 36c is located in the vicinity of the package P (see the alternate long and short dash line in FIG. 4). Next, the suction unit 36c sucks and captures the thread end portion of the needle thread Y2 adhering to the surface of the package P (details will be described later). After the needle thread Y2 is captured, the arm 36b is rotationally driven by the motor 38 to rotate downward, so that the needle thread capture guide portion 36 guides the needle thread Y2 to the thread joint device 33. Further, the bobbin thread catching guide unit 35 is driven by the motor 37 to rotate the arm 35b upward in a state where the thread end portion of the bobbin thread Y1 is captured by the suction unit 35c, whereby the bobbin thread is connected to the thread joining device 33. Guide Y1.
[0037]
　The thread splicing device 33 splices the guided bobbin thread Y1 and the needle thread Y2. When the thread splicing is performed, the portion of the bobbin thread Y1 that is suction-held in the bobbin thread capturing guide portion 35 and is not used for the thread splicing is cut by the cutter 33a and removed by suction. Similarly, the portion of the needle thread Y2 that is suction-held in the needle thread capture guide portion 36 and is not used for thread splicing is cut by the cutter 33b and removed by suction.
[0038]
　The yarn clearer 34 acquires information on the thickness of the traveling thread Y, and detects a thread defect based on this information. A cutter 34a is arranged in the vicinity of the yarn clearer 34. When a thread defect is detected by the yarn clearer 34, the cutter 34a immediately cuts the thread Y, and the yarn clearer 34 outputs a detection signal to the unit control unit 60.
[0039]
　The winding unit 40 is for winding the thread Y on the winding bobbin Bm to form the package P. The take-up unit 40 includes a cradle 41 that rotatably holds the take-up bobbin Bm, a twill drum 42, a drum drive motor 43 that rotates the twill drum 42, and a needle thread sensor 44 (suction detection unit of the present invention). ). A twill groove 42a is formed on the outer peripheral surface of the twill drum 42. The twill swing drum 42 rotates while passing the thread Y through the twill swing groove 42a, thereby traversing the thread Y with a predetermined width. Then, the twill swing drum 42 rotates in contact with the package P formed on the take-up bobbin Bm while traversing the thread Y by the twill swing groove 42a, so that the package P and the take-up bobbin Bm are twilled. The driven rotation is caused by the contact friction with the swing drum 42. As a result, the yarn Y is wound around the winding bobbin Bm to form a package. The needle thread sensor 44 is, for example, an optical sensor, and detects the needle thread Y2 sucked and captured by the suction unit 36c of the needle thread capturing guide unit 36 ​​at the time of thread splicing.
[0040]
　The drum drive motor 43 is configured to be able to rotationally drive the twill drum 42 in both the forward rotation direction in which the thread Y is wound around the package P and the reverse rotation direction in which the thread Y is pulled out from the package P. During the normal thread winding process, the twill swing drum 42 is driven in the forward direction to rotate the package P in the forward direction, and the thread is wound around the package P. Further, at the time of thread splicing described above, the package P is driven in reverse by the twill swing drum 42 in a state where the suction portion 36c is located near the package P and a negative pressure is generated in the suction portion 36c. In the reverse direction, the needle thread Y2 is pulled out and sucked into the suction portion 36c (see FIG. 5).
[0041]
　The display unit 50 is for displaying the information of the take-up unit 2. As shown in FIG. 3, the display unit 50 includes a plurality of lamps 51, a character display unit 52, and a manual button 53 (operation unit of the present invention). The lamp 51 is for notifying the operator that the state of the take-up unit 2 has changed. The lamp 51 is, for example, an LED lamp, and is configured to be capable of outputting two colors of light, red and blue, respectively. The character display unit 52 is for displaying characters related to a specific state of the winding unit 2, and is arranged above the lamp 51. The character display unit 52 is, for example, a 3-digit 7-segment display liquid crystal display. The manual button 53 is for restarting the thread winding process by being operated by the operator when the thread winding process by the winding unit 2 is interrupted. The manual button 53 is arranged below the lamp 51 and is electrically connected to the unit control unit 60.
[0042]
　The unit control unit 60 is built in the unit main body 10, and includes a CPU, a ROM, a RAM (storage unit 61), and the like. The unit control unit 60 controls each unit by the CPU according to the program stored in the ROM. Specifically, receiving signals from the yarn clearer 34, the manual button 53 of the display unit 50, etc., the thread unwinding assisting device 22, the thread splicing device 33, the motor 37, the motor 38, the shutter 39, the drum drive motor 43, The display unit 50 and the like are controlled. Further, the unit control unit 60 outputs a signal requesting the ball lifting device 3 to lift the ball via the machine base control device 4.
[0043]
　In the winding unit 2 having the above configuration, the thread winding process for forming the package P is performed as follows. That is, the unit control unit 60 drives the drum drive motor 43 in a state where the package P and the twill swing drum 42 are in contact with each other to rotate the twill swing drum 42, whereby the thread Y drawn from the thread feeding bobbin Bk is rotated. Is wound around the winding bobbin Bm to form the package P.
[0044]
　Normally, when the package P is fully wound, the thread winding process in the package P is completed. However, if the amount of yarn Y remaining in the yarn feeding bobbin Bk is small when the package P is fully wound, the yarn feeding bobbin Bk becomes empty immediately after starting winding the yarn Y on a new winding bobbin Bm. Therefore, it is necessary to replace the bobbin Bk with a new yarn feeding bobbin immediately, which may reduce the production efficiency. Therefore, if it is found that the remaining amount of the thread of the thread feeding bobbin Bk is less than the predetermined amount at the timing when the package P is fully wound, the thread Y is wound as it is even after the package P is fully wound. Subsequently, the thread feeding bobbin Bk may be emptied. Then, when the empty thread feeding bobbin Bk is replaced with another new thread feeding bobbin Bk, the thread winding process of the package P may be terminated. Examples of the method for detecting the amount of the thread Y wound around the thread feeding bobbin Bk include the following methods. That is, when the yarn Y of a predetermined length is wound around the package P after the above-mentioned regulation cylinder 23 reaches the lowermost end, the unit control unit 60 determines the amount of yarn Y wound around the yarn feeding bobbin Bk. Judges that there are only a few left. Alternatively, the unit control unit 60 grasps the information regarding the initial yarn amount of the yarn feeding bobbin Bk and the information regarding the yarn amount wound around the package P, and based on the information, the yarn of the yarn feeding bobbin Bk The remaining amount may be calculated.
[0045]
(Details of Thread
　Splicing ) Next, the thread splicing device 33 and the thread splicing according to its peripheral configuration will be described in a little more detail. For example, when a thread defect is detected by the yarn clearer 34 and the thread Y is cut during a normal thread winding process, the unit control unit 60 controls each component of the winding unit 2 to temporarily stop the thread winding process. Stop it. Then, the unit control unit 60 controls the thread processing execution unit 30 and the like to suck and capture the divided bobbin thread Y1 and needle thread Y2, guide the bobbin thread Y1 and the needle thread Y2 to the thread joining device 33, and , Thread splicing is performed by the thread splicing device 33. Hereinafter, for the sake of simplification of the description, the above-mentioned series of processes relating to the thread splicing (suction capture and guidance of the thread Y, and thread splicing by the thread splicing device 33) will be referred to as a thread splicing process. After the thread splicing process is completed, the unit control unit 60 controls each component of the winding unit 2 to restart the thread winding process. As described above, the normal thread splicing process during the normal thread winding process is performed without any operation by the operator.
[0046]
　Next, a suction process for sucking the needle thread Y2 by the needle thread capture guide portion 36 in the thread splicing process will be described. When the thread winding process is temporarily stopped before the thread splicing process, the twisting drum 42 and the package P rotate for a while due to inertia, so that the needle thread Y2 is wound around the package P. Therefore, the unit control unit 60 positions the suction portion 36c of the needle thread capture guide unit 36 ​​near the package P and sucks the needle thread Y2 by the suction unit 36c before causing the thread splicing device 33 to perform the thread splicing. Capture (see the alternate long and short dash line in FIG. 5). More specifically, the unit control unit 60 switches the closed shutter 39 to the open state with the suction unit 36c located in the vicinity of the package P. At the same time, the unit control unit 60 controls the drum drive motor 43 to temporarily reverse the oscillating drum 42 and the package P, and pull out the needle thread Y2 from the package P. As a result, the needle thread Y2 is sucked by the needle thread capture guide portion 36.
[0047]
　Next, the length (drawing length) of the needle thread Y2 drawn out in the suction process will be described. As an example, a drawer length when a thread defect is detected by the yarn clearer 34 will be described. When a thread defect is detected by the yarn clearer 34 during the thread winding process, the thread is cut by the cutter 34a (see FIG. 3), but at this point, the thread defect still remains in the needle thread Y2. Of the needle thread Y2, the portion that is sucked and captured by the needle thread capture guide portion 36 during the thread splicing process and is not used for thread splicing by the thread splicing device 33 is formed by the cutter 33b (see FIG. 4) of the thread splicing device 33. It is removed by being cut. By the way, some thread defects have a short length in the thread running direction, and some have a long length. When the thread defect is short, the drawer length of the needle thread Y2 may be short, and when the thread defect is long, the drawer length of the needle thread Y2 needs to be long.
[0048]
　Therefore, the unit control unit 60 is set so that the pull-out length of the needle thread Y2 to be pulled out from the package P can be changed in order to be sucked by the needle thread capture guide unit 36 ​​according to the length of the thread defect. For example, the drawer length (basic drawer length of the present invention) when a thread defect shorter than a predetermined reference length is detected is LA, and the drawer length when a thread defect longer than the reference length is detected is detected. Is set to be LB (> LA). The needle thread Y2 is pulled out from the package P by reversing the twill swing drum 42 at a predetermined rotation speed for a predetermined rotation time. For example, the unit control unit 60 reverses the twill drum 42 by the rotation time TA when the drawer length is LA, and reverses the twill drum 42 by the rotation time TB (> TA) when the drawer length is LB. It is set to let you. In this way, the drawer length is changed according to the length of the thread defect. In addition, for the sake of simplification of the explanation, an example in which the drawer length is two types is described here, but for example, even if the drawer length is configured to be steplessly changeable according to the length of the thread defect. Of course good. Instead of executing the control of reversing the twill swing drum 42 at a predetermined rotation speed for a predetermined rotation time, it is also possible to adopt a control of reversing the twill swing drum 42 at a predetermined rotation speed by a predetermined number of rotations.
[0049]
(Regarding problems during thread splicing process)
　Here, when the thread splicing process is not performed normally for some reason, it may be necessary for the operator to take corrective action. When such a problem occurs, the unit control unit 60 causes the display unit 50 to display a display prompting the operator to solve the problem, and puts the take-up unit 2 in a state of waiting for the operation of the manual button 53 by the operator. To do. That is, the thread splicing process and the subsequent thread winding process are not restarted unless the operator manually operates the button 53 (restart operation).
[0050]
　By the way, recently, there is a correlation between the number of times the restart operation is performed during the formation of the package P and the frequency of thread breakage in the package P in a post-process (for example, a warping process by a warper). Discovered by the inventor of the present application. The inventor of the present application considered the cause as follows. That is, when a problem that requires the operator to deal with and restart the operation occurs, the operator touches the package P, and the weak thread portion where the thread breakage easily occurs remains in the package P. Therefore, the thread breakage occurs in the subsequent process. I thought that it would be easy to occur. Hereinafter, among the problems that require the operator to deal with and restart the operation, examples of the problems that the operator needs to touch the package (automatic mouth-out mistake and multiple mouth-out) will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram showing a state of suction of the needle thread Y2 by the needle thread capture guide unit 36. FIG. 6A is a diagram showing a state in which multiple mouths are generated. FIG. 6B is a diagram showing a state of the winding unit 2 when multiple outlets are detected.
[0051]
　First, an automatic mouth-to-mouth error will be described. The automatic mouth-out error means that the needle thread capture guide 36 executed the suction operation of the needle thread Y2 a plurality of times during the thread splicing process, but the suction capture of the needle thread Y2 became impossible in a series of cycle operations. This is a defect shown. In the suction process described above, when the thread end Ya (see the solid line in FIG. 5) is normally sucked and captured by the suction unit 36c, the needle thread Y2 is sucked into the arm 36b (see the two-dot chain line in FIG. The needle thread sensor 44 of the type detects the needle thread Y2 sucked into the transparent arm 36b. However, if the thread end Ya is strongly attached to the package P, the thread end Ya may not separate from the package P and the thread end Ya may not be sucked into the arm 36b. The unit control unit 60 determines that a mouth-out error has occurred, for example, when the needle thread sensor 44 does not detect the needle thread Y2 even after a predetermined time has elapsed after switching the closed shutter 39 to the open state. Even if a mouth-out error occurs, the unit control unit 60 causes the needle thread capture guide unit 36 ​​to perform the needle thread Y2 capture operation again. The unit control unit 60 determines that an automatic mouth-out error has occurred when a mouth-out error has occurred three times in a row.
[0052]
　Next, the multiple mouthing will be described. The multiple mouthing is a problem in which a plurality of needle threads Y2 are sucked by the needle thread capturing guide unit 36 ​​during the thread splicing process. When suction-capturing the needle thread Y2, for example, if a part of the thread Y wound around the package P is loose and the thread end Ya is strongly attached to the package, FIG. 6A shows. As shown in, a portion different from the thread end Ya may be sucked. In such a state, when the needle thread Y2 is detected by the needle thread sensor 44, the unit control unit 60 controls the motor 38 to rotate the arm 36b, as shown in FIG. 6 (b). The minute needle thread Y2 is guided to the thread joint device 33. Here, a yarn clearer 34 (thread thickness detecting unit of the present invention) is arranged above the thread joining device 33, and the yarn clearer 34 causes the thickness of the needle thread Y2 to correspond to two threads. It is detected that the thickness (detection value clearly larger than the detection value of the thickness of one thread). As a result, the occurrence of multiple outlets is detected, and a signal indicating an abnormality is transmitted from the yarn clearer 34 to the unit control unit 60.
[0053]
　When an automatic mouth-out error or multiple mouth-out occurs, the operator finds the thread end Ya stuck to the surface of the package P and guides the thread end Ya to the needle thread capture guide 36 in order to deal with these problems. There is a need to. Further, if an intermediate portion of the thread is cut and a piece of thread generated by the cutting adheres to the surface of the package P, it is necessary to manually remove the piece of thread. Therefore, when the operator touches the package P, a part of the yarn is rolled on the package P and the twist of the yarn is weakened, so that the yarn strength of the portion touched by the operator may decrease. In addition, for example, when a trouble occurs in which the thread Y is complicatedly entangled with the package P, the operator may take measures to tear off the entangled thread. In such a case, a thread end thinned by tearing remains in the package P, and this portion may cause a problem due to a decrease in thread strength in a subsequent process. The inventor of the present application has considered that when the package P contains a large amount of weak yarn portions having such reduced yarn strength, yarn breakage may easily occur in a subsequent process.
[0054]
　Therefore, in the winding unit 2 of the present embodiment, the unit control unit 60 performs the following processing. Specifically, it will be described with reference to FIGS. 7 to 9.
[0055]
(Setting of Unit Control Unit)
　FIG. 7 is a table showing information on a defect stored in the unit control unit 60 and the pull-out length and rotation time of the thread Y associated therewith. In the present embodiment, as shown in FIG. 7, the storage unit 61 of the unit control unit 60 stores defect information regarding a defect requiring a restart operation and information regarding a drawer length and rotation time associated with the defect information. Has been done.
[0056]
　As an example of the defect information, in addition to the above-mentioned automatic mouthing error and multiple mouthing error, information on a defect such as a thread splicing error is also stored. The thread splicing error is a defect indicating that the thread splicing by the thread splicing device 33 has been tried several times but has failed. For example, in the thread splicing device 33, a thread splicing error occurs when compressed air is not normally blown to the thread Y due to a malfunction of a pressure air source (not shown) or the like. In this case, since the operator mainly performs maintenance on the thread joint device 33 and its surroundings, it is unlikely that the operator will dare to touch the package P.
[0057]
　As described above, the automatic mouth-out mistake and the multiple mouth-out are defects in which the operator may touch the package P (first defect). On the other hand, the thread splicing error is a defect (second defect) in which the operator does not necessarily have to touch the package P. In any case, in order to restart the yarn splicing process, a restart operation of pressing the manual button 53 is required.
[0058]
　When the first defect occurs, the operator may touch the package P to generate a thread end Ya or a weak thread portion in the package P, so that the needle thread Y2 needs to be sucked for a long time. Therefore, the pull-out length of the needle thread Y2 when the first defect occurs is obtained by adding a predetermined additional length to the basic pull-out length (LA) when the thread defect is short in the above-mentioned normal thread splicing process. It is possible to make it as long as possible. For example, as shown in FIG. 7, the drawer length (L1) when an automatic mouth-out error occurs is a length obtained by adding an additional length (Lα) to the basic drawer length (LA). That is, when an automatic mouth-out error occurs, the needle thread Y2 having a length of L1 (= LA + Lα) is sucked. In other words, the rotation time (T1) for reversing the package P when an automatic mouth-out error occurs is longer than the rotation time (TA) when the thread defect is short in the normal thread splicing process. The additional length is approximately 1 to 3 m. The additional length can be set arbitrarily and can be changed according to the setting. Further, for example, the drawer length (L2) when multiple outlets occur is a length obtained by adding an additional length (Lβ) different from Lα to the basic drawer length (LA), which is the length of the package P. The rotation time is T2, which is different from T1. In this way, the additional length can be set individually according to the type of defect. On the other hand, the drawer length (L3) of the needle thread Y2 when a thread splicing error (second defect) occurs in which the operator does not necessarily have to touch the package P is the same as the basic drawer length (LA). That is, the rotation time (T3) of the package P is the same as that of TA. As described above, the unit control unit 60 can change the drawer length when the restart operation is performed according to the type of defect that requires the restart operation.
[0059]
(Control of the winding unit by the unit control unit)
　Next, the control (thread splicing process) of the winding unit 2 by the unit control unit 60 when the restart operation is performed will be described with reference to FIGS. 8 and 9. .. FIG. 8 is a flowchart showing an example of control by the unit control unit 60. FIG. 9 is a diagram showing a difference in drawer length between the case where the restart operation is performed and the case where the restart operation is not performed.
[0060]
　As an initial state, a normal thread splicing process is performed. During the thread splicing process, for example, when the above-mentioned mouthing error occurs three times in a row (the needle thread sensor 44 executes the suction operation of the needle thread Y2 three times, but the suction of the needle thread Y2 is not detected). The unit control unit 60 determines that a problem of automatic mouth-out error has occurred (S101). Next, the unit control unit 60 interrupts the thread splicing process by the winding unit 2 and causes the display unit 50 (see FIG. 3) to display an alarm prompting the operator to resolve the problem (S102). Then, until the operator takes action and the manual button 53 (see FIG. 3) is pressed, the yarn splicing process is not restarted and waits (S103).
[0061]
　When an automatic mouth-out error occurs, the operator touches the package P to find the thread end Ya, guides the thread end Ya to the suction portion 36c of the needle thread catching guide 36, and then presses the manual button 53. Then, when the manual button 53 is pressed (restart operation is performed) by the operator, the unit control unit 60 starts the suction process. That is, immediately after the restart operation, the unit control unit 60 starts sucking the needle thread Y2 by the needle thread capture guide unit 36 ​​(see FIG. 9) while reversing the package P, and pulls out the needle thread Y2 (S104). More specifically, the unit control unit 60 rotates and drives the drum drive motor 43 (see FIG. 2) to reverse the oscillating drum 42 (see FIG. 9), reverse the package P, and is in a closed state. The shutter 39 (see FIG. 9) is switched to the open state. Further, the unit control unit 60 starts measuring the time for reversing the package P from the time when the shutter 39 is switched to the open state, and continues the rotation drive of the drum drive motor 43 until the rotation time T1 elapses (S105). As a result, the needle thread Y2 of the drawer length (L1) obtained by adding the additional length (Lα) to the basic drawer length (LA) when the thread splicing process is performed without going through the restart operation and the thread defect is short. , Sucked by the needle thread capture guide 36 (see FIGS. 9A and 9B). In this way, the unit control unit 60 determines the pull-out length of the needle thread Y2 pulled out from the package P in the suction process when the restart operation can be performed while the unit is stopped and when the restart operation cannot intervene. Can be different from each other.
[0062]
　After the rotation time T1 has elapsed, the unit control unit 60 rotationally drives the motor 38 to rotate the arm 36b of the needle thread capture guide unit 36, and guides the needle thread Y2 to the thread joint device 33 (S106). Even when the arm 36b is being rotated, the unit control unit 60 causes the needle thread Y2 to be pulled out and sucked in accordance with the rotation. As a result, the suction-captured needle thread Y2 is prevented from falling out of the needle thread capture guide portion 36. The unit control unit 60 causes the bobbin thread capture guide unit 35 to perform suction capture and guidance of the bobbin thread Y1 in parallel with suction capture and guidance of the needle thread Y2.
[0063]
　After that, the unit control unit 60 causes the thread splicing device 33 to perform thread splicing (S107), and after the thread splicing is completed, restarts the thread winding process (S108). In this way, the thread splicing process when the restart operation is performed is completed. As an example, the case where an automatic mouth-out error occurs has been described, but the control procedure by the unit control unit 60 is the same even when another problem occurs.
[0064]
　As described above, before the thread splicing, the needle thread Y2 is sucked by the needle thread capturing guide portion 36 and pulled out from the package P, so that the unnecessary part of the thread is sucked. The unnecessary portion can be removed. Further, in the suction process, the unit control unit 60 adds the pull-out length of the needle thread Y2 to the basic pull-out length when the thread is spliced ​​without the restart operation at the time of thread splicing immediately after the restart operation. The length is the sum of the length. Therefore, immediately after the restart operation, the thread is pulled out from the package P for a long time, and the needle thread Y2 is sucked and removed for a long time by the needle thread capturing guide portion 36, so that even if a weak thread portion is generated in the package P, it is weak. It is possible to prevent the thread portion from remaining in the package P. Therefore, it is possible to prevent the package P from containing a weak thread portion.　
[0065]
　Further, since the additional length is changed according to the setting, the drawer length can be optimized according to, for example, the thread type and the size of the package.
[0066]
　Further, since the drawer length is changed according to the type of defect, the needle thread Y2 can be pulled out longer only when some defects occur. Therefore, for example, the needle thread Y2 is sucked for a long time only when a problem that a weak thread portion is likely to occur occurs, and the needle thread Y2 is sucked for a short time only when a problem that a weak thread portion is hard to occur occurs. Can be done. Therefore, it is possible to suppress an increase in the amount of waste lint and suppress an increase in cost while suppressing the inclusion of a weak thread portion in the package P.
[0067]
　Further, when the operator has no choice but to touch the package P, the pull-out length is lengthened at the time of thread splicing immediately after the restart operation, and the needle thread Y2 is lengthened by the needle thread capture guide portion 36. It is possible to effectively prevent the weak thread portion from being included in the package P because it can be sucked into the package P. On the other hand, when a second defect that the operator can deal with without touching the package P occurs, the occurrence of a weak thread portion can be prevented by not touching the package P at all. Therefore, at the time of thread splicing immediately after the restart operation, the drawer length can be set to the basic drawer length, and the needle thread Y2 can be sucked short. Therefore, it is possible to effectively suppress the inclusion of the weak thread portion in the package P and suppress the increase in the amount of waste lint.
[0068]
　Further, when an automatic mouth-out error occurs in which the operator needs to find the thread end and guide the thread end to the needle thread capture guide portion 36, the needle thread capture guide portion 36 can suck the yarn for a long time. , It is possible to particularly effectively suppress the inclusion of the weak thread portion in the package P.
[0069]
　Further, when the operator finds the thread end and multiple mouths need to be guided to the needle thread catching guide 36, the needle thread catching guide 36 can suck the thread for a long time. It is possible to particularly effectively suppress the inclusion of the weak thread portion in the package P.
[0070]
　Further, in the suction process, the rotation time count starts when the shutter 39 is opened. Therefore, as compared with the case where the rotation time count starts after the suction-captured needle thread Y2 is detected, for example, the package P It is possible to shorten the time for reversing.
[0071]
　Next, a modified example in which the embodiment is modified will be described. However, those having the same configuration as that of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted as appropriate.
[0072]
(1) In the above embodiment, in the suction process, the measurement of the rotation time is started when the shutter 39 is opened, but the measurement is not limited to this. For example, as shown in the flowchart of FIG. 10, after starting the reversal of the package P and starting the suction of the needle thread Y2 (S104), until the suction-captured needle thread Y2 is detected by the needle thread sensor 44. Waiting (S109), the rotation time may be measured from the time when the suction-captured needle thread Y2 is detected. As a result, the yarn can be reliably sucked until the rotation time elapses, and the yarn of a desired length can be reliably sucked and removed.
[0073]
(2) In the above-described embodiments, the drawer length of the needle thread Y2 when the first defect occurs and the drawer length of the needle thread Y2 when the second defect occurs are different. Not limited to. That is, both drawer lengths may be equal. As a result, the needle thread Y2 can be sucked for a long time regardless of the type of defect. Therefore, even when the condition of the package P is checked by touching the package P just in case when a defect occurs, the weak thread portion is attached to the package P. Can be suppressed from being included.
[0074]
(3) In the above-described embodiments, the operation of pressing the manual button 53 is a restart operation, but the operation is not limited to this. For example, it may be configured so that the restart operation is performed by operating the machine base control device 4.
[0075]
(4) In the above-described embodiments, three types of defects have been illustrated, but the types of defects are not limited to this. That is, it is sufficient that the pull-out length of the needle thread Y2 can be made different from that in the case where the thread splicing process is performed without the restart operation when a problem that requires the operator to deal with and restart the operation occurs.
[0076]
(5) In the above-described embodiment, the needle thread Y2 is guided to the thread joint device 33 after the suction process of the needle thread Y2 is completed, but the present invention is not limited to this. That is, the needle thread Y2 may be sucked after the needle thread Y2 sucked and captured by the needle thread catching guide portion 36 is guided to the thread joining device 33.
[0077]
(6) In the above-described embodiment, the suction-captured needle thread Y2 is detected by the needle thread sensor 44, but the present invention is not limited to this. For example, after the needle thread capture guide portion 36 is positioned near the package P to open the shutter 39, the needle thread capture guide portion 36 is rotated to the vicinity of the thread joint device 33 to cause the thread joint device 33 The needle thread Y2 may be detected by the yarn clearer 34 arranged above. In this case, the yarn clearer 34 corresponds to the suction detection unit of the present invention. In this case, after performing the suction operation, it is possible to confirm whether or not the suction operation has succeeded in capturing and sucking the needle thread Y2, but since the start point of suction cannot be detected, the suctioned needle thread Y2 The length cannot be recognized accurately.
[0078]
(7) In the above-described embodiment, the unit control unit 60 is set so that the longer the drawer length is, the longer the rotation time is, but the present invention is not limited to this. For example, the rotation time is fixed, and the longer the drawer length, the faster the rotation speed of the twill drum 42 may be set. In this case, since the rotation time does not change even if the drawer length changes, it is possible to suppress a decrease in production efficiency due to a long suction process.
[0079]
(8) The present invention is applicable not only to the winding unit 2 of the automatic winder 1 but also to various thread winding machines provided in an air spinning frame, an open-ended spinning frame, a ring spinning frame, and the like.
Code description
[0080]
　　2 Winding unit (thread winder)
　　20 Thread
　　feeder 33 Thread splicing device
　　34 Yarn clearer (thread thickness detection unit)
　　36 Upper thread catching guide (thread catching guide)
　　39 Shutter (opening / closing member)
　　40 Winding part
　　44 　　Needle thread sensor (suction detection unit)
　　53 Manual button (operation unit)
　　103 Negative pressure source (suction source)
　　L1 Drawer length
　　L2 Drawer length
　　LA Basic drawer length
　　Lα Additional length
Lβ Additional length
　　P Package
　　T1 Rotation time
　　T2 Rotation time
　　Y Thread
　　Y2 Upper thread (thread)
The scope of the claims
[Claim 1]
　It is a yarn winding machine that winds the yarn supplied from the yarn feeder to a winding pipe to form a package, and can wind the yarn around the
　package by rotating the package in the normal direction. In addition, the winding portion capable of pulling out the yarn from the package by temporarily reversing the package
　is arranged between the yarn feeding portion and the winding portion in the thread traveling direction, and the yarn is arranged. A thread splicing device for splicing yarn that is divided between the thread feeding section and the winding section in the traveling direction, and a
　thread on the winding section side in the thread traveling direction is sucked at the time of thread splicing. A thread catching guide unit that captures and guides the yarn
　winding process to the thread joining device, an operation unit in which an operator performs a restart operation for restarting the thread winding process when the thread winding process is interrupted, and a
　control unit. The
　control unit
　reverses the package and causes the yarn catching guide to suck the yarn on the winding unit side before causing the yarn splicing device to perform the yarn splicing. The
　pull-out length for pulling out the yarn in the suction process at the time of the thread splicing immediately after the restart operation is set to the basic drawer for pulling out the yarn when the thread splicing is performed without going through the restart operation. A yarn winder characterized by adding a predetermined additional length to the length.
[Claim 2]
　The thread winder according to claim 1, wherein the control unit changes the additional length according to a setting.
[Claim 3]
　The thread winder according to claim 1 or 2, wherein the control unit changes the drawer length according to the type of defect that requires the restart operation.
[Claim 4]
　When
　the first defect that the operator may touch the package occurs as the defect in the suction process, the control unit causes the thread immediately after the restart operation when the restart operation is performed. At the time of splicing, a thread having a length obtained by adding the additional length to the basic drawer length is pulled out,
　and when a second defect occurs in which the operator does not need to touch the package as the defect, the restart operation is performed. The thread winder according to claim 3, wherein the thread having the basic drawer length is pulled out at the time of thread splicing immediately after the restart operation.
[Claim 5]
　A suction detection unit that detects the thread sucked and captured by the thread capture guide unit is provided, and
　the first defect is that
　the suction capture of the thread by the thread capture guide unit is detected by the suction detection unit at the time of the thread splicing. The thread winder according to claim 4, wherein a mouth-out error indicating that the thread has not been taken out continuously occurs, and an automatic mouth-out error is included, which makes it impossible for the thread capture guide unit to suck and capture the thread.
[Claim 6]
　The thread thickness detecting unit for detecting the thickness of the thread guided to the thread splicing device by the thread capturing guide unit is provided, and
　the first defect is the
　thread by the thread capturing guide unit at the time of the thread splicing. 4. Or 5 according to claim 4, wherein the thickness of the thread guided to the joint device includes multiple outlets indicating that the thickness of the thread corresponds to the thickness of a plurality of threads is detected by the thread thickness detecting unit. The thread winder described in.
[Claim 7]
　It is disposed between the yarn catching and guiding portion and the suction source in the suction direction in which the yarn is sucked, provided with a closing member is switched between a closed state and an open state by the control unit,
　wherein the control unit,
　the suction In the process, when the
　thread catching guide portion sucks the thread, the package is reversed, the opening / closing member in the closed state is switched to the open state, and the
　package is pulled out from the package. The thread winder according to any one of claims 1 to 6, wherein the rotation time for reversing the speed is measured from the time when the opening / closing member is switched to the open state.
[Claim 8]
　An opening / closing member arranged between the suction source and the thread capture guide portion in the suction direction in which the thread is sucked and switched between the closed state and the open state by the control unit, and
　suction capture by the thread capture guide portion. The
　control unit includes a suction detection unit that detects the thread, and the control unit 　reverses the package and opens and closes the closed state when the thread capture guide unit sucks the thread
　in the suction process.
The
　rotation time for switching the member to the open state and reversing the package in order to pull out the thread from the package is measured from the time when the thread sucked and captured by the thread capturing guide unit is detected by the suction detecting unit. The thread winder according to any one of claims 1 to 6, characterized in that it is started.