WO2019142553A1

WO2019142553A1 - Yarn winding machine

Info

Publication number: WO2019142553A1
Application number: PCT/JP2018/045677
Authority: WO
Inventors: 川元　謙治
Original assignee: 村田機械株式会社
Priority date: 2018-01-16
Filing date: 2018-12-12
Publication date: 2019-07-25
Also published as: CN111542481A; CN111542481B; JP2019123590A

Abstract

The purpose of the present invention is to prevent the inclusion of a weak yarn portion in a package. A winding unit 2 comprises: a winder capable of pulling a yarn Y from a package P by temporarily reversing the package P; a yarn splicer 33 for splicing the yarn; an upper yarn trap guide section 36 for suction-trapping an upper thread Y2 during yarn splicing and guiding the upper thread Y2 to the yarn splicer 33; a manual button 53 for an operator to perform restart operation; and a unit controller 60. Before effecting yarn splicing by the yarn splicer 33, the unit controller 60 performs suction processing that draws out the yarn Y from the package P by reversing the package P while causing the upper yarn trap guide section 36 to suction the yarn Y on the winder 40 side. When splicing yarn immediately following a restart operation, the unit controller 60 sets the drawing length of the upper yarn Y2 in the suction processing to a length obtained by adding a preset additional length to the basic drawing length of the yarn used when the yarn splicing is performed without a restart operation therebefore.

Description

Yarn winding machine

The present invention relates to a yarn winding machine.

Patent Document 1 discloses a winder unit that performs a yarn winding process of winding a yarn supplied from a yarn supplying bobbin around a winding tube to form a package. The winder unit is disposed between the yarn supplying bobbin and the package in the yarn traveling direction, and includes a yarn joining device for joining yarns and an upper yarn guiding pipe for guiding the yarn on the package side in the yarn traveling direction to the yarn joining device. Prepare. When yarn breakage or the like occurs, the yarn winding process is interrupted, and the yarn on the yarn supplying bobbin side and the yarn on the winding package side in the yarn traveling direction are yarn-joined by the yarn joining device. At the time of yarn splicing, the yarn on the winding package side in the yarn traveling direction is guided to the yarn splicing device while being sucked by a suction mouse provided on the upper yarn guide pipe.

Here, after the yarn winding process is interrupted, all yarns on the winding package side are usually wound into a package. For this reason, the yarn may not be sucked well by the suction mouse, for example, because the end of the yarn is strongly stuck to the winding package. If such a failure occurs, it may be necessary for the operator to guide the end of the yarn to the suction mouse. The operator then has to touch the package in order to locate the end of the thread. In addition, when a problem occurs, it may be necessary for the operator to touch the package or torn off the yarn wound on the package.

JP, 2017-190210, A

At the time of occurrence of the above-mentioned trouble, etc., when the operator touches the package, a part of the yarn is rolled on the package and the twist of the yarn is weakened, etc., so that the yarn strength of the portion touched by the operator decreases. There is a risk of In addition, even when the operator tears the yarn, a thin yarn end may be left in the package, and the yarn strength may be reduced. If the portion where the yarn strength is lowered (weak yarn portion) is included in the package, there may arise a problem that yarn breakage is likely to occur in a later step, such as a warping step with a warper.

An object of the present invention is to suppress the inclusion of a weak yarn portion in a package.

The yarn winding machine according to the first invention is a yarn winding machine that performs a yarn winding process of winding a yarn supplied from a yarn supplying unit around a winding tube to form a package, and by rotating the package in a forward direction A winding unit capable of winding a yarn on the package, and capable of drawing a yarn from the package by temporarily reversing the package, the yarn supplying unit and the winding unit in the yarn traveling direction A yarn splicing device for splicing yarns which are disposed between the yarn supplying portion and the winding portion in the yarn traveling direction, and the yarn traveling direction in the yarn splicing. And a yarn catching and guiding unit for suctioning and catching the yarn on the winding unit side and guiding the yarn to the yarn joining device, and a restart operation for restarting the yarn winding process by the operator when the yarn winding process is interrupted. The operation unit to be performed and the control unit Before the yarn joining apparatus performs the yarn joining, the control unit causes the yarn catching and guiding unit to suck the yarn on the winding unit side while reversing the package, and performs yarn from the package The suction process is performed to draw out the yarn, and in the case of the yarn joining immediately after the restart operation, a drawing length for drawing the yarn in the suction process is a basic drawer for drawing the yarn when performing the yarn joining without the restart operation. It is characterized in that a length obtained by adding a predetermined additional length to the length.

In the yarn winding machine, if the operator takes measures such as touching the package prior to yarn joining performed when the operator performs the resumption operation, a weak yarn portion may be generated in the package. In the present invention, since the yarn is sucked by the yarn catching and guiding portion and drawn out from the package before the yarn splicing, the unnecessary portion of the yarn is sucked to remove the unnecessary portion. can do. Furthermore, the control unit adds an additional length to the basic draw-out length in the case of performing yarn joining without restart operation during yarn joining immediately after restart operation in the suction processing. Length. For this reason, immediately after the resumption operation, the long yarn is pulled out of the package, and the long yarn portion is left in the package even if the weak yarn portion is generated in the package by drawing and removing the long yarn by the yarn capturing guide. Can be suppressed. Therefore, it can suppress that a package contains a weak yarn part.

A yarn winding machine according to a second invention is characterized in that, in the first invention, the control section changes the additional length according to a setting.

In the present invention, since the additional length is changed, the drawing length can be optimized according to, for example, the thread type and the size of the package.

A yarn winding machine according to a third invention is characterized in that, in the first or second invention, the control section changes the drawing length in accordance with the type of the defect requiring the restart operation. It is

In all cases where a problem requiring an operator's action and restart operation occurs, if the yarn is sucked longer, it is more reliably suppressed that the weak yarn portion remains in the package, while waste of waste The amount will increase, and the cost may increase. In the present invention, since the draw-out length is changed according to the type of defect, the yarn can be drawn out longer only when a part of the defect occurs. For this reason, for example, it is possible to suck the yarn longer only when a defect in which the weak yarn portion tends to occur easily occurs, and suck a yarn in the case where a defect in which the weak yarn portion hardly occurs is generated. Therefore, it is possible to suppress an increase in the amount of waste thread discarded and to suppress an increase in cost while suppressing the inclusion of the weak yarn portion in the package.

In the yarn winding machine according to a fourth aspect of the present invention, in the third aspect, in the suction processing, the control section performs a first defect that the operator may touch the package as the defect. When the restart operation is performed, a yarn having a length obtained by adding the additional length to the basic pull-out length is drawn out at the time of the yarn joining immediately after the restart operation, and the operator sets the package to the package. In the case where a second defect which does not need to be touched occurs, when the restart operation is performed, a yarn of the basic draw-out length is pulled out at the time of the yarn joining immediately after the restart operation. is there.

In the case where a first defect that requires the operator to touch the package occurs, the weak yarn is likely to be generated. In the present invention, when such a failure occurs, the yarn can be sucked longer by the yarn catching and guiding portion by lengthening the draw-out length at the time of yarn joining immediately after the restart operation, so the weak yarn portion Can be effectively suppressed from being included in the package. On the other hand, when the second defect which can be dealt with without the operator touching the package occurs, the generation of the weak yarn portion can be prevented by not touching the package at all. For this reason, at the time of yarn joining immediately after the resumption operation, the drawing length can be made the basic drawing length, and the yarn can be sucked short. Therefore, it is possible to suppress an increase in the amount of waste thread discarded while effectively suppressing the inclusion of the weak yarn portion in the package.

A yarn winding machine according to a fifth invention is the yarn winding machine according to the fourth invention, further comprising a suction detection unit for detecting the yarn suctioned and captured by the yarn capturing and guiding unit, and the first defect is at the time of the yarn joining. A misplacement error continuously occurs indicating that the suction detection unit does not detect the suction and capture of the yarn by the yarn capture and guide unit, and an automatic misplacement error in which the suction and capture of the yarn can not be performed by the yarn capture and guide unit It is characterized by including.

In the case where an automatic tapping error occurs in which the suction and capture of the yarn by the yarn catching and guiding portion continuously fails, the operator needs to locate the yarn end and guide the yarn end to the yarn catching and guiding portion. In this case, since it is necessary for the operator to look for the yarn end in a stroke of the package, the surface of the package is rubbed, which may cause the weak yarn portion to be easily generated. In the present invention, when such a defect occurs, the yarn can be sucked longer by the yarn catching and guiding portion, so that the inclusion of the weak yarn portion in the package can be particularly effectively suppressed.

A yarn winding machine according to a sixth aspect of the invention is the yarn winding machine according to the fourth or fifth aspect, further comprising: a yarn thickness detection unit that detects the thickness of the yarn guided to the yarn joining device by the yarn catching and guiding unit; The first defect is that the yarn thickness guided by the yarn catching and guiding unit to the yarn joining device at the time of yarn joining corresponds to the thickness of a plurality of yarns by the yarn thickness detecting unit. It is characterized in that it includes multiple cues indicating that it has been detected.

In the case of yarn splicing, for example, when part of the yarn wound in the package is loose and the yarn end is stuck to the package, the loosened portion (the middle portion different from the yarn end) is In some cases, the yarn is caught by suction by the yarn catching and guiding portion and is guided to the yarn joining device as it is. In such a case, it seems that a plurality of yarns are suctioned and captured (multiple feeding), and the yarn thickness detection corresponds to the thickness of a plurality of yarns being sucked and collected. Detected by the department. In order to cope with this problem, the operator may need to touch the package because the operator needs to locate the yarn end and cause it to be sucked into the yarn capture guide. In the present invention, when such a defect occurs, the yarn can be sucked longer by the yarn catching and guiding portion, so that the inclusion of the weak yarn portion in the package can be particularly effectively suppressed.

According to a seventh aspect of the present invention, in the yarn winding machine according to any one of the first to sixth aspects, the control device is disposed between a suction source and the yarn catching and guiding portion in a suction direction in which the yarn is sucked. The control unit is configured to reverse the package when the yarn catching and guiding unit sucks the yarn in the suction process, and the control unit reverses the package when the suction process is performed. Switching the opening and closing member to the open state, and starting to measure a rotation time for reversing the package to pull out the yarn from the package from the time when the opening and closing member is switched to the open state. It is a thing.

In the present invention, in the suction process, counting of the rotation time starts when the opening and closing member is opened, so that, for example, the package is reversed compared to when counting of the rotation time starts after the suction and capture of the yarn is detected. Time can be shortened.

The yarn winding machine according to an eighth invention is the yarn winding machine according to any one of the first to sixth inventions, wherein the yarn winding machine is disposed between a suction source and the yarn catching and guiding portion in a suction direction in which the yarn is sucked. The apparatus includes: an open / close member switched between a closed state and an open state; and a suction detection unit detecting a yarn suctioned and captured by the yarn capture and guide unit, wherein the control unit performs the yarn capture and guide unit in the suction process. Time to aspirate the yarn, reverse the package, and switch the open / close member in the closed state to the open state to rotate the package in reverse for pulling the yarn out of the package. It is characterized in that measurement starts from the time when the yarn suctioned and captured by the yarn capturing and guiding unit is detected by the suction detecting unit.

In the present invention, in the suction process, since the counting of the rotation time starts from the time when it is detected that the yarn is being sucked by the yarn catching and guiding section, the yarn can be reliably suctioned until the rotation time passes. A yarn of a desired length can be reliably removed by suction.

It is a front view of the automatic winder concerning this embodiment. It is a block diagram which shows the electric constitution of an automatic winder. It is a schematic front view of a winding unit. It is a schematic side view of the upper part of a winding unit. It is a figure which shows attraction | suction of the thread | yarn by an upper thread | yarn capture | acquisition guide part. It is an explanatory view showing a multiple opening. It is a table which shows defect information and the drawer length and rotation time associated with it. It is a flow chart which shows an example of control by a unit control part. It is a figure which shows the difference of the drawer length in the case where restart operation is performed, and the case where it does not go through restart operation. It is a flowchart which shows control by a unit control part based on a modification.

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 taken as the left-right direction, and the direction in which gravity acts is taken as the up-down direction.

(Schematic configuration of automatic winder)
First, the schematic configuration of the automatic winder 1 (the textile machine of the present invention) will be described using FIGS. 1 and 2. FIG. 1 is a front view of an automatic winder 1 according to the present embodiment. FIG. 2 is a block diagram showing the electrical configuration of the automatic winder 1. The automatic winder 1 includes a plurality of winding units 2 (the yarn winding machine of the present invention), a doffing device 3 and a machine control device 4.

The plurality of winding units 2 are arranged in the left-right direction, and each winds the yarn Y drawn from the yarn supplying bobbin Bk onto the winding bobbin Bm (see FIG. 3; winding tube of the present invention) and package P Perform a yarn winding process to form The doffing device 3 is disposed above the plurality of winding units 2 and configured to be movable in the left-right direction from the winding unit 2 disposed at the left end to the winding unit 2 disposed at the right end . The doffing device 3 moves to the upper side of the winding unit 2 when receiving the signal of the full winding from the winding unit 2, and removes the package P of the full winding, and the empty winding bobbin Bm. Work such as mounting on the take-up unit 2 of FIG.

The machine control device 4 is disposed to the left of the plurality of winding units 2. The machine control device 4 is electrically connected to a unit control unit 60 of the winding unit 2 and a control unit (not shown) of the doffing device 3 and communicates with these control units.

(Winding unit)
Next, the configuration of the winding unit 2 will be described using FIGS. 2 and 3. FIG. 3 is a schematic front view of the winding unit 2. FIG. 4 is a schematic side view of the upper part of the winding unit.

As shown in FIG. 3, the winding unit 2 includes a unit body 10, a yarn supplying 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, Control unit) and the like. The unit body 10 is a columnar member elongated in the vertical direction. The yarn supplying unit 20, the yarn processing execution unit 30, and the winding unit 40 are provided in the unit body 10, and arranged in this order from the bottom to the top. The display unit 50 is provided on the front surface of the upper end portion of the unit main body 10.

The yarn feeding unit 20 is for unwinding and supplying the yarn Y wound around the yarn feeding bobbin Bk. The yarn feeding unit 20 has a yarn feeding bobbin supporting unit 21 and a yarn unwinding assisting device 22. The yarn supplying bobbin support portion 21 supports the yarn supplying bobbin Bk in a substantially upright state. The yarn supplying bobbin support portion 21 is configured to be able to discharge the empty yarn supplying bobbin Bk. When the empty yarn supplying bobbin Bk is discharged, a new yarn supplying bobbin Bk supplied from the yarn supplying bobbin supplying device (not shown) is conveyed by the bobbin conveying device (not shown) to the yarn supplying bobbin supporting portion 21. Supplied. The yarn unwinding assisting device 22 restricts the swelling when the yarn Y is unwound from the yarn feeding bobbin Bk by the restriction cylinder 23. The regulating cylinder 23 is configured to move downward as the amount of yarn wound around the yarn feeding bobbin Bk decreases, and to keep the size of the above-mentioned bulge at a constant size.

The yarn processing execution unit 30 is for executing various processing related to the yarn Y. The yarn processing execution unit 30 includes a yarn feeler 31, a tension applying device 32, a yarn joining device 33, and a yarn clearer 34.

The yarn feeler 31 detects the presence or absence of the traveling yarn Y between the yarn unwinding assisting device 22 and the tension applying device 32. The tension applying device 32 applies a predetermined tension to the traveling yarn 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 horizontal position of the plurality of movable gate bodies 32b, a predetermined tension is applied to the yarn Y traveling between the fixed gate body 32a and the movable gate body 32b.

When the yarn Y is not connected between the yarn supplying unit 20 and the winding unit 40, the yarn joining device 33 performs the yarn Y on the yarn supplying unit 20 (bottom yarn Y1) and the winding unit 40. It is for yarn splicing with the yarn Y (upper yarn Y2) on the side. When the yarn Y is not connected, for example, at the time of yarn cutting by the cutter 34a when a yarn defect is detected by the yarn clearer 34 described later, at the time of yarn breakage during winding of the package P, or It may be time to replace the yarn bobbin Bk. As an example of the yarn joining device 33, a compressed air type can be mentioned. The yarn joining device 33 blows compressed air supplied from a pressure air source (not shown) onto the lower yarn Y1 and the upper yarn Y2, and once loosens both yarn ends, blows compressed air again to both yarn ends, and yarns The yarn is spliced by entwining the ends. The yarn joining device 33 also has

cutters

33a and 33b (see FIG. 4). The

cutters

33a and 33b respectively cut the lower end side lower yarn Y1 and the upper yarn Y2 when yarn joining is performed by the yarn joining device 33.

A lower yarn catching and guiding portion 35 for catching the lower yarn Y1 on the yarn feeding bobbin Bk side and guiding the lower yarn Y1 to the yarn joining device 33 is provided under the yarn joining device 33, and a package is provided above the yarn joining device 33. An upper thread catching and guiding portion 36 (a thread catching and guiding portion according to the present invention) for catching and guiding the upper thread Y2 on the P side to the thread joining device 33 is provided. The lower thread catching and guiding portion 35 is a pipe-like arm 35b rotatable about a shaft 35a, a suction portion 35c disposed at the tip end of the arm 35b, for sucking and catching the thread end portion of the lower thread Y1, and an arm 35b And a motor 37 for rotating and pivoting up and down. The upper thread catching and guiding portion 36 is a transparent pipe-like arm 36b rotatable around a shaft 36a, and a suction portion 36c which is disposed at the tip of the arm 36b and sucks and catches the thread end of the upper thread Y2. , And a motor 38 that rotationally drives the arm 36 b to pivot up and down.

As shown in FIG. 4, the lower thread catching and guiding portion 35 and the upper thread catching and guiding portion 36 are connected to the negative pressure source 103 (the suction source of the present invention) through the

ducts

101 and 102, respectively. A midway portion of the duct 102 (that is, between the lower thread catching and guiding portion 35 and the upper thread catching and guiding portion 36 and the negative pressure source 103 in the suction direction in which the thread Y is sucked) is driven by a stepping motor (not shown). Shutter 39 (the opening and closing member of the present invention) is disposed. The shutter 39 can be switched between an open state in which the upper thread catching and guiding portion 36 and the negative pressure source 103 communicate with each other and a closed state in which the communication is blocked. When the shutter 39 is opened, a negative pressure is generated in the suction portion 36 c of the upper thread catching and guiding portion 36. The suction portion 35c of the lower thread catching and guiding portion 35 is provided with an open / close lid (not shown), and at the capture position where the lower thread catching / guiding portion 35 sucks and captures the lower thread Y1, the open / close lid is appropriately provided. It will be in the open state by contacting the illustrated stopper.

When the yarn joining device 33 performs yarn joining, the upper yarn catching and guiding unit 36 performs the following operation. First, the arm 36 b is rotationally driven by the motor 38 and pivots upward, whereby the suction portion 36 c is positioned near the package P (see the two-dot chain line in FIG. 4). Next, the suction unit 36c sucks and captures the yarn end of the upper yarn Y2 attached to the surface of the package P (details will be described later). After the upper yarn Y2 is captured, the arm 36b is rotationally driven by the motor 38 and pivots downward, and the upper yarn catching and guiding portion 36 guides the upper yarn Y2 to the yarn joining device 33. Further, the lower yarn catching and guiding portion 35 causes the lower end of the lower yarn Y1 to be caught by the suction portion 35c, and the arm 35b is driven by the motor 37 to pivot upward, thereby causing the yarn joining device 33 to rotate. Guide Y1.

The yarn splicing device 33 splices the guided lower yarn Y1 and the upper yarn Y2. When the yarn splicing is performed, a portion of the lower yarn Y1 which is held by suction in the lower yarn catching and guiding portion 35 and is not used for the yarn splicing is cut by the cutter 33a and removed by suction. Similarly, in the upper yarn Y2, a portion which is held by suction in the upper yarn catching and guiding portion 36 and is not used for yarn splicing is cut by a cutter 33b and removed by suction.

The yarn clearer 34 acquires information on the thickness of the traveling yarn Y, and detects yarn defects based on this information. A cutter 34 a is disposed in the vicinity of the yarn clearer 34. When a yarn defect is detected by the yarn clearer 34, the cutter 34a immediately cuts the yarn Y, and the yarn clearer 34 outputs a detection signal to the unit controller 60.

The winding unit 40 is for forming the package P by winding the yarn Y around the winding bobbin Bm. The take-up unit 40 includes a cradle 41 rotatably holding the take-up bobbin Bm, a vibrating drum 42, a drum drive motor 43 for rotating the vibrating drum 42, and an upper yarn sensor 44 (the suction detection unit of the present invention ). A traverse groove 42 a is formed on the outer peripheral surface of the traverse drum 42. The traverse drum 42 traverses the yarn Y with a predetermined width by rotating while passing the yarn Y through the traverse groove 42a. Then, the traversing drum 42 rotates in a state of being in contact with the package P formed on the take-up bobbin Bm while traversing the yarn Y by the traverse groove 42a, so that the package P and the take-up bobbin Bm do The contact friction with the vibration drum 42 causes the driven rotation. As a result, the yarn Y is wound around the winding bobbin Bm to form a package. The upper thread sensor 44 is, for example, an optical sensor, and detects an upper thread Y2 which is sucked and captured by the suction portion 36c of the upper thread capturing and guiding portion 36 at the time of splicing.

The drum drive motor 43 is configured to be able to rotationally drive the vibrating drum 42 in both the normal direction in which the yarn Y is wound around the package P and the reverse direction in which the yarn Y is drawn from the package P. During normal yarn winding processing, the traverse drum 42 is driven to rotate in the normal direction, whereby the package P is rotated forward, and the yarn is wound around the package P. Further, at the time of the above-described yarn joining, the package P is driven in reverse by driving the traverse drum 42 in a state where the suction portion 36c is located in the vicinity of the package P and negative pressure is generated in the suction portion 36c. Reversely, the upper thread Y2 is drawn by the suction portion 36c while being drawn (see FIG. 5).

The display unit 50 is for displaying the information of the winding unit 2. As shown in FIG. 3, the display unit 50 has a plurality of lamps 51, a character display unit 52, and a manual button 53 (an operation unit of the present invention). The lamp 51 is for notifying the operator that the state of the winding unit 2 has changed. The lamp 51 is, for example, an LED lamp, and is configured to be able to output light of two colors of red and blue. The character display unit 52 is for displaying characters relating to a specific state of the winding unit 2, and is disposed above the lamp 51. The character display unit 52 is, for example, a liquid crystal display of three digits and seven segments. The manual button 53 is operated by the operator to resume the yarn winding process when the yarn winding process by the winding unit 2 is interrupted. The manual button 53 is disposed below the lamp 51 and is electrically connected to the unit controller 60.

The unit control unit 60 is incorporated in the unit body 10, and includes a CPU, a ROM, a RAM (storage unit 61), and the like. The unit control unit 60 controls the respective units by the CPU in accordance with the program stored in the ROM. Specifically, reception of signals from the yarn clearer 34, the manual button 53 of the display unit 50, etc., the yarn unwinding assisting device 22, the yarn joining device 33, the motor 37, the motor 38, the shutter 39, the drum drive motor 43, Control of the display unit 50 and the like is performed. Further, the unit control unit 60 outputs a signal for requesting the doffing device 3 to doff the ditch via the machine control device 4.

In the winding unit 2 having the above configuration, the yarn 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 in which the package P and the vibrating drum 42 are in contact with each other to rotate the vibrating drum 42, whereby the yarn Y drawn from the yarn supplying bobbin Bk Are wound around the winding bobbin Bm to form a package P.

In addition, normally, when the package P is fully wound, the yarn winding process in the package P ends. However, if the amount of yarn Y remaining on the yarn supplying bobbin Bk is small when the package P is fully wound, the yarn supplying bobbin Bk starts emptying immediately after starting to wind the yarn Y on a new winding bobbin Bm. Therefore, it is necessary to immediately replace the yarn supplying bobbin Bk with a new one, which may lower the production efficiency. Therefore, if it is determined that the remaining amount of the yarn of the yarn supplying bobbin Bk does not reach the predetermined amount at the timing when the package P is fully wound, take up the yarn Y as it is even after the package P is fully wound. Subsequently, the yarn supplying bobbin Bk may be emptied. Then, when the empty yarn supplying bobbin Bk is replaced with another new yarn supplying bobbin Bk, the yarn winding process of the package P may be ended. As a method of detecting the amount of yarn Y wound around the yarn supplying bobbin Bk, for example, the following method may be mentioned. That is, when the yarn Y having a predetermined length is wound around the package P after the regulation cylinder 23 reaches the lowermost end, the unit controller 60 controls the amount of the yarn Y wound around the yarn supplying bobbin Bk. It is judged that there is little remaining. Alternatively, the unit control unit 60 grasps the information on the initial yarn amount of the yarn supplying bobbin Bk and the information on the yarn amount wound around the package P, and based on the information, the unit controlling unit 60 recognizes the yarn of the yarn supplying bobbin Bk. The remaining amount may be calculated.

(About the details of yarn splicing)
Next, the yarn joining device 33 and the yarn joining by the peripheral configuration will be described in more detail. For example, when a yarn defect is detected by the yarn clearer 34 and the yarn Y is cut during normal yarn winding processing, the unit control unit 60 controls each component of the winding unit 2 to temporarily hold the yarn winding processing. Stop it. The unit control unit 60 controls the yarn processing execution unit 30 and the like to suction and capture the divided lower yarn Y1 and upper yarn Y2, guides the lower yarn Y1 and upper yarn Y2 to the yarn joining device 33, and The yarn joining device 33 performs yarn joining. Hereinafter, for the sake of simplicity of the description, the above-described series of treatments related to yarn splicing (suction capture and guidance of yarn Y and yarn splicing by the yarn splicing device 33) will be referred to as yarn splice processing. After completion of the yarn joining process, the unit control unit 60 controls each component of the winding unit 2 to resume the yarn winding process. As described above, the normal yarn joining process at the time of the normal yarn winding process is performed without the operation by the operator.

Next, a suction process for sucking the upper yarn Y2 by the upper yarn catching and guiding portion 36 in the yarn joining process will be described. When the yarn winding process is temporarily stopped before the yarn joining process, the traverse drum 42 and the package P rotate for a while due to inertia, and thus the upper yarn Y2 is wound around the package P. Therefore, the unit control unit 60 positions the suction portion 36c of the upper yarn catching and guiding portion 36 in the vicinity of the package P and causes the upper yarn Y2 to be suctioned by the suction portion 36c before making the yarn joining device 33 perform yarn joining. Capture (see the two-dot chain line in FIG. 5). More specifically, the unit control unit 60 switches the shutter 39 in the closed state to the open state in a state where the suction unit 36c is 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 traverse drum 42 and the package P, and causes the upper yarn Y2 to be pulled out of the package P. As a result, the upper yarn Y2 is sucked by the upper yarn catching and guiding portion 36.

Next, the length (draw-out length) of the upper thread Y2 drawn out in the suction process will be described. As an example, the drawing length in the case where a yarn defect is detected by the yarn clearer 34 will be described. When a yarn defect is detected by the yarn clearer 34 during the yarn winding process, the yarn is cut by the cutter 34a (see FIG. 3), but at this point, the yarn defect still remains in the upper yarn Y2. A portion of the upper yarn Y2 which is sucked and held by the upper yarn catching and guiding portion 36 at the time of yarn joining processing and not used for yarn joining by the yarn joining device 33 is a cutter 33b of the yarn joining device 33 (see FIG. 4). It is removed by being cut off. Some yarn defects have a short length in the yarn running direction and some have a long yarn defect. When the yarn defect is short, the drawing length of the upper yarn Y2 may be short, and when the yarn defect is long, it is necessary to make the drawing length of the upper yarn Y2 longer.

Therefore, the unit control unit 60 is set so as to be able to change the drawing length of the upper yarn Y2 drawn from the package P in order to cause the upper yarn catching and guiding unit 36 to suction according to the length of the yarn defect. For example, the extraction length when the yarn defect shorter than the predetermined reference length is detected (the basic extraction length according to the present invention) is LA, and the extraction length when the yarn defect longer than the reference length is detected Is set to be LB (> LA). The drawing of the upper yarn Y2 from the package P is performed by reversing the scanning drum 42 at a predetermined rotation speed for a predetermined rotation time. For example, the unit control unit 60 reverses the vibrating drum 42 for the rotation time TA when the drawing length is LA, and reverses the vibrating drum 42 for the rotation time TB (> TA) when the drawing length is LB. It is set to let you In this way, the draw-out length is changed according to the length of the yarn defect. Although an example in which the drawing length is two types is described here for simplification of the explanation, for example, even if the drawing length can be changed steplessly according to the length of the yarn defect. Of course good. Instead of executing the control of reversing the oscillating drum 42 at a predetermined rotation speed for a predetermined rotation time, the control of reversing the rotation at a predetermined rotation speed for a predetermined number of rotations may be employed.

(About the trouble at the time of yarn joining process)
Here, when the yarn joining process is not normally performed due to some reason, the operator may need to take action. When such a problem occurs, the unit control unit 60 causes the display unit 50 to display a message prompting the operator to solve the problem, and the winding unit 2 waits for the operator to operate the manual button 53. Do. That is, the yarn joining process and the subsequent yarn winding process are not resumed unless the operator operates the manual button 53 (resuming operation).

By the way, there is a correlation between the number of recent restart operations performed during formation of the package P and the frequency of yarn breakage in the package P in a later process (for example, warping process by a warper), The present inventors have found out. The inventors of the present application considered the cause as follows. That is, when the operator needs to take action and restart operation, when the operator touches the package P, the weak yarn portion which is likely to cause yarn breakage remains in the package P. Thought that it would be more likely to occur. Hereinafter, among the problems that require an operator's handling and restart operation, examples of problems that require the operator to touch the package (automatic puncturing mistake and multiple confusing) will be described using FIG. 5 and FIG. FIG. 5 is a view showing how the upper yarn Y2 is sucked by the upper yarn catching and guiding portion 36. As shown in FIG. FIG. 6 (a) is a diagram showing a state in which multiple feeding occurs. FIG. 6 (b) is a view showing the state of the winding unit 2 when the multiple feeding is detected.

First, the automatic teaching error will be described. The automatic extraction error means that the upper yarn catching and guiding section 36 executes the suction operation of the upper yarn Y2 multiple times during the yarn joining process, but the suction and collection of the upper yarn Y2 becomes impossible in a series of cycle operations. It is a defect shown. In the suction process described above, when the yarn end Ya (see the solid line in FIG. 5) is normally sucked and captured by the suction portion 36c, the upper yarn Y2 is sucked into the arm 36b (see the two-dot chain line in FIG. 5) The upper yarn sensor 44 detects the upper yarn Y2 being sucked into the transparent arm 36b. However, when the yarn end Ya is strongly attached to the package P, the yarn end Ya may not be separated from the package P, and the yarn end Ya may not be sucked into the arm 36b. For example, when the upper thread Y2 is not detected by the upper thread sensor 44 even if a predetermined time has elapsed after switching the shutter 39 in the closed state to the open state, the unit control unit 60 determines that a lead-in error has occurred. Even when a misplacement error occurs, the unit control section 60 causes the upper thread catching and guiding section 36 to execute the upper thread Y2 capturing operation again. The unit control unit 60 determines that an automatic lead-in error has occurred when a lead-in error has occurred three consecutive times.

Next, multiple feeding will be described. The multiple lead-out is a defect in which a plurality of upper threads Y2 are drawn by the upper thread catching and guiding section 36 during the yarn joining process. When suction and capture of the upper yarn Y2 is performed, for example, when a part of the yarn Y wound around the package P is loosened and the yarn end Ya is strongly stuck to the package, as shown in FIG. As shown in the figure, a portion different from the yarn end Ya may be sucked. In this state, when the upper thread Y2 is detected by the upper thread sensor 44, the unit controller 60 controls the motor 38 to rotate the arm 36b as shown in FIG. The upper yarn Y2 of the minute is guided to the yarn joining device 33. Here, the yarn clearer 34 (the yarn thickness detection unit of the present invention) is disposed above the yarn joining device 33, and the yarn clearer 34 corresponds to the yarn of two yarns Y2 in thickness. It is detected that the thickness is a detection value that is clearly larger than the detection value of the thickness of one thread. As a result, occurrence of multiple exit is detected, and a signal indicating an abnormality is transmitted from the yarn clearer 34 to the unit control unit 60.

In the case of an automatic lead out error or multiple lead out, in order to cope with these problems, the operator searches for the yarn end Ya stuck to the surface of the package P and guides the yarn end Ya to the upper yarn catching and guiding portion 36 There is a need to. In addition, when an intermediate portion of the yarn is cut and a cut piece of the yarn produced by the cut adheres to the surface of the package P, it is necessary to manually remove the cut piece of the yarn. For this reason, 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, and the yarn strength of the portion touched by the operator may be reduced. In addition, for example, when a trouble occurs in which the yarn Y is complicatedly entangled in the package P, the operator may take measures to tear off the entangled yarn. In such a case, the yarn end which has become thin due to tearing remains in the package P, and this portion may cause a failure due to a reduction in yarn strength in a later step. The inventors of the present invention considered that there is a possibility that yarn breakage in a later step may easily occur when the package P contains a large number of weak yarn portions whose yarn strength is lowered.

Therefore, in the winding unit 2 of the present embodiment, the unit control unit 60 performs the following processing. Specifically, description will be made with reference to FIGS. 7 to 9.

(Setting of unit controller)
FIG. 7 is a table showing information on defects stored in the unit control unit 60 and the drawing length and rotation time of the yarn Y associated therewith. In the present embodiment, as shown in FIG. 7, the storage unit 61 of the unit control unit 60 stores the defect information on the defect requiring the restart operation, and the information on the drawing length and the rotation time associated with the defect information. It is done.

As an example of the defect information, in addition to the above-mentioned automatic entrant error and multiple entrant, information relating to the defect of yarn splicing error is also stored. The yarn splicing error is a defect indicating that the yarn splicing device 33 has attempted to splice yarn several times but has failed. For example, in the case where the compressed air is not properly sprayed to the yarn Y in the yarn joining device 33 due to a failure or the like of the pressure air source (not shown), a yarn connection error occurs. In this case, since the operator mainly performs maintenance on the yarn joining device 33 and the periphery thereof, the possibility that the operator daresly touches the package P is low.

As described above, the automatic teaching error and the multiple teaching are problems that the operator may touch the package P (first defect). On the other hand, yarn splicing error is a defect (second defect) in which the operator does not necessarily have to touch the package P. In any of the problems, in order to resume the yarn joining process, the restart operation of pressing the manual button 53 is required.

When the first failure occurs, the operator may touch the package P, and there is a possibility that a weak yarn portion may be generated in the yarn end Ya or the package P. Therefore, it is necessary to suction the upper yarn Y2 longer. Therefore, the drawing length of the upper yarn Y2 when the first defect occurs is determined by adding a predetermined additional length to the basic drawing length (LA) when the yarn defect is short in the normal yarn joining process described above. It has become possible to make For example, as shown in FIG. 7, the drawer length (L1) when an automatic teaching error occurs is a length obtained by adding an additional length (Lα) to the basic drawer length (LA). That is, when an automatic rip out error occurs, the upper 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 picking error occurs is longer than the rotation time (TA) when the yarn defect is short in the normal yarn joining 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. Also, for example, the withdrawal length (L2) in the case of occurrence of multiple feeding is a length obtained by adding an additional length (Lβ) different from Lα to the basic withdrawal length (LA). The rotation time is T2 different from T1. Thus, the additional length can be set individually according to the type of defect. On the other hand, when a yarn splicing error (second defect) which does not necessarily require the operator to touch the package P occurs, the drawing length (L3) of the upper yarn Y2 is the same as the basic drawing length (LA). That is, the rotation time (T3) of the package P is the same as TA. As described above, the unit control unit 60 can change the drawing length when the resumption operation is performed, according to the type of the defect requiring the resumption operation.

(Control of winding unit by unit control unit)
Next, control (yarn joining process) of the winding unit 2 by the unit control unit 60 when the restart operation is performed will be described using FIGS. 8 and 9. FIG. 8 is a flowchart showing an example of control by the unit controller 60. FIG. 9 is a diagram showing the difference in withdrawal length between when the restart operation is performed and when the restart operation is not performed.

In the initial state, normal yarn joining processing is performed. During the yarn joining process, for example, when the above-mentioned misplacement error occurs three consecutive times (the suction operation of the upper yarn Y2 by the upper yarn sensor 44 is performed three times but suction of the upper yarn Y2 is not detected), The unit control unit 60 determines that the problem of the automatic teaching error has occurred (S101). Next, the unit control unit 60 causes the display unit 50 (see FIG. 3) to perform an alarm display prompting the operator to solve the problem by interrupting the yarn joining process by the winding unit 2 (S102). Then, until the operator takes action and the manual button 53 (see FIG. 3) is pressed, the process waits without restarting the yarn joining process (S103).

When an automatic extraction error occurs, the operator touches the package P to find the yarn end Ya, guides the yarn end Ya to the suction portion 36c of the upper yarn catching and guiding portion 36, and then presses the manual button 53. Then, when the manual button 53 is pressed by the operator (the resumption operation is performed), the unit control unit 60 starts the suction process. That is, immediately after the resumption operation, the unit control section 60 starts suction of the upper thread Y2 by the upper thread catching and guiding section 36 (see FIG. 9) while reversing the package P, and pulls out the upper thread Y2 (S104). More specifically, the unit control unit 60 rotationally drives the drum drive motor 43 (see FIG. 2) to reverse the vibrating drum 42 (see FIG. 9) to reverse the package P and is in a closed state. The shutter 39 (see FIG. 9) is switched to the open state. The unit control section 60 starts measuring the time to reverse the package P from the time when the shutter 39 is switched to the open state, and continues the rotational drive of the drum drive motor 43 until the rotational time T1 elapses (S105). As a result, the upper yarn Y2 of the drawing length (L1) is obtained by adding the additional length (Lα) to the basic drawing length (LA) when the yarn joining process is performed without the restart operation and the yarn defect is short. , And drawn by the upper thread catching and guiding section 36 (see FIGS. 9A and 9B). In this manner, the unit control unit 60 can perform the withdrawal operation of the upper thread Y2 withdrawn from the package P in the suction process when the unit can be stopped and when the restart operation can not be intervened. Can differ from each other.

After the rotation time T1 has elapsed, the unit control section 60 rotationally drives the motor 38 to turn the arm 36b of the upper thread catching and guiding section 36 to guide the upper thread Y2 to the thread joining device 33 (S106). Even when the arm 36 b is rotated, the unit control unit 60 pulls out and sucks the upper thread Y 2 in accordance with the rotation. As a result, the upper yarn Y2 being suctioned and captured is prevented from falling out of the upper yarn catching and guiding portion 36. The unit control section 60 causes the lower thread catching and guiding section 35 to perform suction capture and guidance of the lower thread Y1 in parallel with suction capture and guidance of the upper thread Y2.

Thereafter, the unit control unit 60 causes the yarn joining device 33 to perform yarn joining (S107), and resumes the yarn winding process after the completion of yarn joining (S108). In this way, the yarn joining process when the restart operation is performed is completed. In addition, although the case where the automatic teaching mistake generate | occur | produced as an example was demonstrated, the procedure of control by the unit control part 60 is the same, even when another malfunction generate | occur | produces.

As described above, since suction processing is performed in which the upper yarn Y2 is sucked by the upper yarn catching and guiding portion 36 and pulled out from the package P before yarn joining, by suctioning an unnecessary portion of the yarn, The unnecessary part can be removed. Furthermore, in the suction process, the unit control section 60 adds the drawing length of the upper yarn Y2 to the basic drawing length in the case of performing the yarn joining without the restart operation at the time of the yarn joining immediately after the restart operation. Length. Therefore, immediately after the resumption operation, the yarn is drawn long from the package P, and the upper yarn Y2 is sucked and removed longer by the upper yarn catching and guiding portion 36, so that the weak yarn portion is generated in the package P. It is possible to suppress the yarn portion from remaining in the package P. Therefore, the package P can be inhibited from including the weak yarn portion.

Further, since the additional length is changed in accordance with the setting, the drawing length can be optimized in accordance with, for example, the thread type, the size of the package, and the like.

Further, since the pull-out length is changed according to the type of defect, the upper thread Y2 can be drawn longer only when a part of the defect occurs. For this reason, for example, the upper yarn Y2 is sucked longer only when the failure that the weak yarn portion is likely to occur, and the upper yarn Y2 is sucked shorter when the failure that the weak yarn portion is less likely to occur. Can. Therefore, it is possible to suppress an increase in the amount of waste thread discarded while suppressing the inclusion of the weak yarn portion in the package P, and to suppress an increase in cost.

In addition, when the first defect that the operator is forced to touch the package P occurs, the drawing length is lengthened at the time of yarn joining immediately after the restart operation, and the upper yarn Y2 is made longer by the upper yarn catching and guiding portion 36. It can be effectively suppressed that the weak yarn portion is included in the package P. On the other hand, when the second defect which can be dealt with without the operator touching the package P occurs, the generation of the weak yarn portion can be prevented by not touching the package P at all. For this reason, at the time of yarn joining immediately after the restart operation, the pull-out length can be set to the basic pull-out length, and the upper thread Y2 can be sucked shorter. Therefore, it is possible to suppress an increase in the amount of waste thread discarded while effectively suppressing the inclusion of the weak yarn portion in the package P.

In addition, when an automatic picking error occurs in which the operator needs to locate the yarn end and guide the yarn end to the upper yarn catching and guiding portion 36, the upper yarn catching and guiding portion 36 can suck the yarn longer. The fact that the weak yarn portion is included in the package P can be particularly effectively suppressed.

In addition, since the upper thread catching and guiding portion 36 can suck the thread longer when the operator needs to find the thread end and guide the thread end to the upper thread catching and guiding portion 36, the upper thread catching and guiding portion 36 can It can be particularly effectively suppressed that the weak yarn portion is included in the package P.

Further, in the suction process, since the count of the rotation time starts when the shutter 39 is opened, for example, the package P is compared with the case where the count of the rotation time is started after the upper thread Y2 captured and held is detected. The time to reverse the

Next, a modified example in which the embodiment is modified will be described. However, about what has the same structure as the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted suitably.

(1) In the above embodiment, in the suction process, the measurement of the rotation time is started when the shutter 39 is opened, but it is not limited thereto. For example, as shown in the flow chart of FIG. 10, after the reverse rotation of the package P is started and the suction of the upper thread Y2 is started (S104), the upper thread Y2 sucked and captured is detected by the upper thread sensor 44 Waiting (S109), the measurement of the rotation time may be started from the time when the upper yarn Y2 that has been suctioned and captured is detected. Thus, the yarn can be reliably sucked until the rotation time elapses, and the yarn of a desired length can be reliably sucked and removed.

(2) In the above embodiments, the drawing length of the upper thread Y2 when the first defect occurs and the drawing length of the upper thread Y2 when the second defect occurs are different. It is not limited to That is, the drawing lengths of the two may be equal. As a result, since the upper thread Y2 can be sucked longer regardless of the type of defect, even when the package P is touched to confirm the state of the package P just in case of occurrence of a defect, the weak thread portion Can be suppressed.

(3) In the above embodiments, although the operation of pressing the manual button 53 is the restart operation, the present invention is not limited to this. For example, the resumption operation may be performed by operating the machine control device 4.

(4) In the above embodiment, three types of defects are illustrated, but the types of defects are not limited to this. That is, when a defect requiring a measure and restart operation by the operator occurs, the drawing length of the upper yarn Y2 may be made different as compared with the case of performing the yarn joining process without the restart operation.

(5) In the embodiments described above, although the upper yarn Y2 is guided to the yarn joining device 33 after the suction processing of the upper yarn Y2 is completed, the present invention is not limited thereto. That is, after the upper yarn Y2 sucked and captured by the upper yarn capturing and guiding section 36 is guided to the yarn joining device 33, the upper yarn Y2 may be suctioned.

(6) In the above embodiments, the upper yarn Y2 that has been suctioned and captured is detected by the upper yarn sensor 44, but the invention is not limited thereto. For example, after the upper thread catching and guiding portion 36 is positioned in the vicinity of the package P and the shutter 39 is opened, the upper thread catching and guiding portion 36 is rotated to the vicinity of the yarn joining device 33 to The upper yarn Y2 may be detected by the yarn clearer 34 disposed 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, although it is possible to confirm whether the catching and suction operation of the upper thread Y2 has succeeded by the suction operation, it is not possible to detect the start point of suction, so The length can not be recognized accurately.

(7) In the above embodiments, in the unit control unit 60, the rotation time is set to be longer as the drawing length is longer. However, the present invention is not limited to this. For example, the rotation time may be fixed, and the rotation speed of the traverse drum 42 may be set to be higher as the drawing length is longer. In this case, since the rotation time does not change even if the drawing length changes, it is possible to suppress the decrease in production efficiency due to the increase in the suction process.

(8) The present invention is applicable not only to the winding unit 2 of the automatic winder 1, but also to various yarn winding machines provided in an air spinning machine, an open end spinning machine, a ring spinning machine or the like.

2 Winding unit (yarn winding machine)
20 yarn feeding unit 33 yarn joining device 34 yarn clearer (yarn thickness detection unit)
36 Upper thread catching and guiding part (thread catching and guiding part)
39 Shutter (opening and closing member)
40 Winding unit 44 Upper 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 Rotational Time T2 Rotational Time Y Thread Y2 Upper Thread (Yarn)

Claims

A yarn winding machine that performs a yarn winding process of winding a yarn supplied from a yarn supplying unit around a winding tube to form a package,
A winding section capable of winding a yarn on the package by rotating the package in a forward direction, and capable of drawing the yarn from the package by temporarily reversing the package;
The yarn splicing is performed between the yarn supplying unit and the winding unit in the yarn traveling direction, and the yarn being divided between the yarn supplying unit and the winding unit in the yarn traveling direction. Yarn joining device,
A yarn catching and guiding unit that sucks and catches the yarn on the winding unit side in the yarn traveling direction and guides the yarn to the yarn joining device during the yarn joining;
An operation unit in which a resumption operation for resuming the yarn winding process is performed by an operator when the yarn winding process is interrupted;
And a control unit,
The control unit
Before the yarn joining device performs the yarn joining, a suction process is performed to draw the yarn from the package by allowing the yarn catching and guiding unit to suck the yarn from the package while the package is reversed.
In the case of the yarn splicing immediately after the restart operation, a predetermined additional length is set to a basic draw-out length for pulling out the yarn in the case of performing the yarn splicing without the restart operation, in the suction process. A yarn winding machine characterized by adding a length.
The yarn winding machine according to claim 1, wherein the control unit changes the additional length in accordance with a setting.
The yarn winding machine according to claim 1 or 2, wherein the control unit changes the draw-out length in accordance with the type of failure that requires the restart operation.
The control unit is configured to:
As the defect, when the first defect that the operator may touch the package occurs, when the restart operation is performed, the basic draw-out length is set at the time of the yarn joining immediately after the restart operation. Pull out a length of yarn adding the additional length,
As the defect, when a second defect that does not require the operator to touch the package occurs, the yarn of the basic draw-out length in the case of the yarn joining immediately after the restart operation when the restart operation is performed The yarn winding machine according to claim 3, wherein the yarn is pulled out.
And a suction detection unit for detecting the yarn suctioned and captured by the yarn capture and guide unit;
The first defect is
In the case of the yarn splicing, a lead-in error continuously occurs indicating that the suction detection unit does not detect the suction and capture of the yarn by the yarn capture and guide unit, and the suction and capture of the yarn is performed by the yarn capture and guide unit 5. The yarn winding machine according to claim 4, further comprising an automatic tapping error which is impossible.
A yarn thickness detection unit that detects the thickness of the yarn guided to the yarn joining device by the yarn catching and guiding unit;
The first defect is
At the time of yarn joining, it is detected that the yarn thickness detecting unit detects that the yarn thickness guided to the yarn joining device by the yarn catching and guiding unit corresponds to the thickness of a plurality of yarns. A yarn winding machine as claimed in claim 4 or 5, characterized in that it comprises a multiple lead-out.
It has an opening and closing member disposed between a suction source and the yarn catching and guiding portion in a suction direction in which the yarn is suctioned, and switched between a closed state and an open state by the control portion;
The control unit
In the suction process,
When suctioning the yarn in the yarn catching and guiding portion, the package is reversed, and the open / close member in the closed state is switched to the open state;
The yarn winding according to any one of claims 1 to 6, wherein a rotation time for reversing the package to withdraw the yarn from the package is started from the time when the opening and closing member is switched to the open state. Take off.
An opening / closing member disposed between a suction source and the yarn catching and guiding portion in a suction direction in which the yarn is suctioned, and switched between a closed state and an open state by the control portion;
And a suction detection unit for detecting the yarn suctioned and captured by the yarn capture and guide unit;
The control unit
In the suction process,
When suctioning the yarn in the yarn catching and guiding portion, the package is reversed, and the open / close member in the closed state is switched to the open state;
The rotation time for reversing the package to pull out the yarn from the package starts to be measured from the time when the yarn suctioned and captured by the yarn capturing and guiding unit is detected by the suction detecting unit. The yarn winding machine according to any one of 1 to 6.