Technical field
[0001]The present invention primarily relates to an adjustable yarn cutting control unit a cutting position to cut the yarn cutting device.
BACKGROUND
[0002]Conventionally, the yarn winding device winds a package while traversing the yarn, when cutting the yarn such as by detected the defect of the yarn, at the timing when the yarn excluding timing in the vicinity of the turning point of the traverse, configured to cut the yarn are known. Patent Document 1 discloses an automatic winder of this kind of yarn winding apparatus.
[0003]Automatic winder of the Patent Document 1, rewinding the package while traversing the yarn, an automatic winder to cut the yarn by a defect detection of the yarn detecting means for detecting a traverse movement of the yarn, the detection signal of the detection means based on comprises control means for controlling the cutting timing of the yarn due to the defect detection of the yarn, the. The control means based on a detection signal of said detecting means, thread, one of the traverse throughout the timing within ranges excluding the vicinity of the traverse folded position of at least one end face side of the package, a yarn defect of the It is set to be performed yarn cutting by the detection.
[0004]According to the configuration of Patent Document 1, when the current position of the yarn in the vicinity of the traverse folded position, by delaying the timing for cutting the yarn, the yarn falls from the end face of the package (hereinafter, may be referred to as "end faces drop".) it can be prevented.
CITATION
Patent Document
[0005]Patent Document 1: Japanese Patent No. 4042271
Summary of the Invention
Problems that the Invention is to Solve
[0006]Incidentally, the said detection means of Patent Document 1 has a configuration in which a plurality of position detection sensor is an optical sensor comprising a light emitting element and a light receiving element. The position detection sensor is, the middle of the travel path of the yarn is running from the yarn monitoring device to the package be disposed (in the traverse region), by detecting the moment through the yarn as the moment when light is blocked, the thread there has been decided to directly detect the timing in the vicinity of the traverse folded position. Therefore, in order to appropriately control the timing of the thread cutting, it is attached to the position detection sensor at an accurate position becomes indispensable.
[0007]However, the position detection sensor and assembly occurs when mounting the support bracket error, due to the influence of mounting error or the like occurring when mounting the support bracket to the appropriate location of an automatic winder, precise position detection sensor in the traversing region there can be difficult to attach to Do position. Moreover, once fitted with position detection sensors in place, usually, since it is not possible to change the position of the detection sensor, a traverse position to prohibit the yarn cut (range) flexibly in accordance with the physical properties of the yarn, such as it has been difficult to change. Furthermore, in order to control the timing of cutting the yarn at the above-described configuration, it is necessary to enter a detection signal detected by the detection means to the control means for controlling the overall operation of the automatic winder, also slub catcher (yarn monitor yarn defect detection signal detected by the device) must also be input to the control unit. Therefore, exchange of signals between each component becomes complicated, it is difficult to simplify the structure for the control. In terms such as above, there is room for improvement in the configuration of Patent Document 1.
[0008]The present invention has been made in view of the above circumstances, and its object is the thread cutting control device capable of adjusting the cutting position to cut the yarn cutting device according to the traverse position of the yarn, the configuration It is to simplify.
Means and effects for Solving the Problems
[0009]The problems to be solved by the present invention have been described above, it will be described a means and its effect for solving this problem.
[0010]According to a first aspect of the present invention, the thread cutting control device is provided for the following structure. That is, the yarn cutting control device controls the operation of the cutting device for cutting the yarn to be wound into a package while being traversed. The thread cutting control apparatus includes a yarn speed detecting section, a traverse position estimation unit, and a cutting position adjusting unit. The yarn speed detecting section detects the yarn speed of the yarn is traveling. The traverse position estimating portion, based on the yarn speed detected by the yarn speed detecting section, and estimates the traverse position of the yarn. The cutting position adjustment unit, according to the traverse position of the yarn was estimated by the traverse position estimation unit, wherein the cutting device to adjust the cutting position to cut the thread.
[0011]Thus, the cutting position by operating the cutting device cuts the yarn by adjusting in accordance with the traverse position of the yarn, by a not to cut the thread at a position where there is a risk that for example the end surface off of the yarn occurs, it is possible to prevent the end surface off of the yarn. Further, since the traverse position estimating unit estimates the traverse position of the yarn on the basis of the yarn speed detected by the yarn speed detecting section, as compared with the case of providing a sensor for detecting a traverse position of the yarn directly, a simple structure it can be realized.
[0012]In the thread cutting control apparatus above, the cutting position adjustment unit, the cut when the traverse position of the yarn at the end of the traverse region of the package, after which the traverse position is moved toward the center of the traverse area as device is activated, it is preferable to adjust the travel distance of the yarn when actuating the cutting device. Here, the "end of the package of the traverse region" refers to a region near the end surface of the package of the package of the traverse region.
[0013]Thus, a simple control to increase the travel distance of the yarn when operating the cutting device, it is possible to prevent the end surface off of the yarn.
[0014]Wherein the thread cutting control device, the traverse position estimating portion, based on the yarn speed of the features detected by the yarn speed detecting section, thread cutting control apparatus and estimates the traverse position.
[0015]Thus, as compared with the case of detecting directly traverse position by the position sensor or the like arranged in the traverse region, with a simple configuration, it is possible to adjust the cutting position to cut the thread in place.
[0016]In the thread cutting control apparatus of the, it preferably has the following configuration. That is, the package is a cone shape whose diameter becomes larger toward the other end from the one axial end. The traverse position estimation unit, the yarn speed detected by the yarn speed detecting section is based on the travel distance of the yarn when it appears extreme values ​​in the process of increasing and decreasing periodically to estimate the traverse position.
[0017]Thus, by utilizing the fact that the yarn speed is increased or decreased periodically in the case of forming the conical package winds the yarn, the traverse position can be properly estimated.
[0018]In the thread cutting control apparatus of the, it preferably has the following configuration. That is, the traverse position estimating unit comprises a yarn speed smoothing unit that smoothes the data indicating the periodic change of the yarn speed detected by the yarn speed detecting section. The traverse position estimation unit, yarn speed after smoothing by the yarn speed smoothing unit based on the travel distance of the yarn when it appears extreme values ​​in the process of increasing and decreasing periodically estimates the traverse position.
[0019]Thus, it is possible to suppress errors due to fine irregular fluctuations caused in the yarn speed can be accurately estimated traversal location.
[0020]In the thread cutting control apparatus above, the yarn speed smoothing unit is preferably smoothed by the moving average method data indicating a periodic change of the yarn speed.
[0021]Thus, by determining the moving average of scores appropriately, while suppressing errors due fine irregular fluctuations caused in the yarn speed, increasing or decreasing trend of the yarn speed can be satisfactorily capture appearing according to the traverse position . As a result, it is possible to accurately estimate the traverse position. Further, it is possible to smooth the yarn speed by a simple calculation.
[0022]In the thread cutting control apparatus above, the traverse position estimation unit, the travel distance between the running position of the yarn of at least the last two maxima of the yarn speed appears, or the minimum value of the yarn speed based on the travel distance between the running position of at least the last two yarns appear, it is preferable to estimate the traverse position of the yarn.
[0023]
　Thus, based on the travel distance of the yarn, the traverse position of the yarn can be properly estimated. Further, by reference to the travel distance of the yarn when it appears is maximum or minimum value in yarn speed, the period of increase or decrease of the yarn speed easily and clearly captured, one cycle of increase and decrease of the yarn speed (traverse 1 it is possible to accurately obtain the travel distance of the yarn corresponding to times). Moreover, the travel distance of the yarn that corresponds to the traverse one time may vary as the diameter of the package increases. In this configuration, for example, based on the travel distance of the yarn in one cycle of the increase and decrease of the last yarn speed yarn since estimates the traverse position, the estimation accuracy of the traverse position can be stabilized.
[0024]
　In the thread cutting control apparatus of the, it preferably has the following configuration. That is, the yarn cutting control device, operating or non of the cutting device to the cutting device actuating command section determines whether the operation of the cutting apparatus based on the traverse position of the yarn that has been estimated by the traverse position estimation unit It includes a prohibition determination unit for outputting a command signal for commanding operation. The prohibition judging unit includes a traverse travel distance the yarn speed is travel distance of the yarn is detected during the most recent one period to increase or decrease, the travel distance of the yarn when the maximum or minimum value of the yarn speed appears If, based on the, the prohibited range representing a range in which thread cutting is prohibited in one cycle of the traverse, from the running position of the nearest thread maximum value or the minimum value of the yarn speed appeared to date a travel distance of the yarn is detected between, based on to determine whether the operation of the cutting device.
[0025]
　Accordingly, to detect the travel distances yarn travels to date from the running position of the nearest thread local maximum / minimum value of the yarn speed appeared, the travel distance, traveling thread cutting is prohibited in the prohibited range by examining the distance whether within the scope of, whether the actuation of the cutting device appropriately and to easily determine, it is possible to prevent the end surface off of the yarn. Further, since the traveling distance of the yarn that corresponds to the traverse one cycle will vary as the diameter of the package increases, this configuration is determined based on the travel distance of the yarn in the most recent one period to increase or decrease the yarn speed, the end face off of the yarn can be prevented stably without being affected by the package diameter increases. Incidentally, the cutting device actuating command section outputs an actuation command signal to the cutting device, preferably are configured to actuate the cutting device.
[0026]
　In the thread cutting control apparatus of the, it preferably has the following configuration. That is, the yarn cutting controller is configured to change the length of disconnection warning traversing range in the range of prohibiting the yarn cut at the end of the traverse area of ​​the package. The cutting position adjustment unit, when the thread cutting signal requesting disconnection of the yarn is input to the yarn cutting control device, when the traverse position estimated by the traverse position estimation unit is in the cutting the prohibition traversing range , as the cutting device is operated after the traverse position of the yarn deviated from the disconnection warning traversing range by moving, to adjust the travel distance of the yarn when the cutting device is actuated.
[0027]
　Thus, the yarn by actuating the cutting device from the delaying until at a position deviated from the disconnection warning traverse range to cut the yarn, it is possible to reliably prevent the end surface off of the yarn. Further, it is possible to change the length of disconnection warning traversing range software manner, you will be able to flexibly change the length of disconnection warning traverse range operator considering the physical properties of the yarn or the like, improving the convenience it can be.
[0028]
　According to a second aspect of the present invention, the yarn monitoring apparatus is provided for the following structure. That is, the yarn monitoring apparatus is provided with a said thread cutting control apparatus, further comprising a yarn defect detecting section for detecting a defect of the yarn. The yarn defect detecting section, when detecting a defect of the yarn, and outputs a yarn defect detection signal as a yarn cutting signal requesting the cut yarn to the yarn cutting control device.
[0029]
　Thus, when the yarn defect detecting section detects a defect of the yarn, by a cutter at a travel distance of the yarn end surface off of the yarn is adjusted so as not to generate it is possible to cut the yarn.
[0030]
　In the yarn monitoring apparatus above, it is preferable to provide the cutting device.
[0031]
　Thus, the exchange of control signals to operate the cutting device from the detection of a defect in the yarn because it is easy to complete in the yarn monitoring apparatus, it is possible to simplify the configuration.
[0032]
　In the yarn monitoring apparatus above, it is preferable that the cutting device is a cutter.
[0033]
　Thus, it is possible to cut the yarn with a simple configuration.
[0034]
　In the yarn winding device is preferably configured as follows. That is, the yarn winding device comprises a yarn supplying portion, and a package forming unit. The said yarn supplying section, the yarn feeding bobbin is supported. The package forming section forms the package winds the yarn of the yarn supplying bobbin of the yarn supplying section. The yarn monitoring device is disposed between the yarn supplying section and the package forming unit.
[0035]
　Thus, it is possible to provide a yarn winding apparatus of the end face off of yarn hardly occurs simple configuration.
[0036]
　In the yarn winding device is preferably configured as follows. That is, the yarn winding device comprises a winding drum, a yarn splicing device, and a control unit. It said winding drum, a yarn from the yarn supplying section in contact with the package for winding the package to rotationally drive the package. The yarn splicing device, when the cutting device is above yarn cutting operation, carried out the yarn from the yarn supplying section, a yarn from the package forming section, a yarn splicing operation of joining the. Wherein the control unit controls the yarn winding device. Wherein the control unit, the said yarn over the yarn defect detecting section in travel distance or more length of the yarn from the position of the yarn when defects of the yarn is detected to the position of cutting by operating the cutting device to withdraw from the package, to control the winding drum so as to reverse the package, and then to cause perform the yarn splicing operation in the yarn splicing device.
[0037]
　That is, in the yarn winding device comprising the yarn monitoring apparatus, even if the yarn monitoring device detects the defect of the yarn, if the timing of actuation of the cutting device in order to prevent the end face fall delay occurs. In this respect, according to this configuration, the package by the amount of operation is delayed cutting device even if the yarn is wound additionally, the pull out the yarn sufficient length including their additional portion from the package since the yarn splicing device performs a yarn splicing operation, it is possible to reliably remove the defects of the yarn is detected by the yarn monitoring apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
[0038]
Side view of the winder unit according to an embodiment of FIG. 1 the present invention.
[2] a front view of the winder unit.
[3] a block diagram showing the configuration of a yarn monitoring apparatus comprising winder unit.
FIG. 4 is a block diagram showing the structure of a traverse position estimation unit and the cutting position adjustment unit.
[FIG. 5] (a) a graph representing the data representing a periodic change in yarn speed before smoothing. (B) a graph representing the data indicating the periodic change after smoothed by the moving average method.
[6] using the data indicating the periodic change in yarn speed, and the reference position in which the yarn is estimated to be located at an end of the package of the traverse area, and the distance interval for evaluating the most recent traversal mileage graph for explaining the process of determining the.
[7] diagram illustrating a disconnection warning traversing range set on the end portion of the traverse area of the package.
[8] diagram illustrating a prohibited traverse ratio calculated on the basis of the disconnection warning traversing range.
[9] a flowchart showing the position processing traverse position estimation unit and the cutting position adjusting unit for adjusting performs a thread cutting.
[10] a flowchart showing a process unit control unit performs.
DESCRIPTION OF THE INVENTION
[0039]
　Next, with reference to the drawings, a yarn monitoring device with a thread cutting control apparatus according to an embodiment of the present invention, and the configuration of the automatic winder provided with the same will be described. Figure 1 is a side view of a winder unit 10 according to an embodiment of the present invention. Figure 2 is a front view of the winder unit 10.
[0040]
　The winder unit 10 of the yarn winding apparatus shown in FIGS. 1 and 2, the spun yarn 20 unwound from the yarn supplying bobbin 21 (hereinafter, sometimes referred to as "yarn".) While were traverse (traverse) wound around the winding bobbin 22, a predetermined shape (in this embodiment, a cone shape in which the diameter increases toward the one end to the other) at a predetermined length in which the package 30. Automatic winder according to the present embodiment includes arranging the plurality of winder units 10 arranged, figures and unillustrated frame control device is disposed in the aligned direction of the one end, the.
[0041]
　Each of the winder unit 10, as shown in FIG. 1, comprises a unit frame 11 provided on one lateral side in a front view, a winding unit main body 16 provided on the side of the unit frame 11, the there. The winding unit main body 16 includes a package forming unit 31, and includes mainly the yarn supplying portion 28, a. Package forming section 31 is also referred to as a winding section.
[0042]
　Yarn supplying section 28 is for supporting the yarn supplying bobbin 21 to the yarn 20 is wound in a substantially upright position. Yarn feeding bobbin 21 of the present embodiment is supplied to a supporting portion of the yarn supplying portion 28 for example by the magazine type supply device 9 shown in FIG. The supply system of the yarn feeding bobbin 21 is not limited thereto, may be supplied yarn feeding bobbin 21 by for example a tray type supplying device.
[0043]
　Package forming unit 31 is configured to form a package 30 by winding the yarn of the yarn feeding bobbin 21 of the yarn supplying portion 28 to the winding bobbin 22. Specifically, the package forming unit 31 includes a cradle 23 that rotatably supports the winding bobbin 22, a winding drum 24 for driving the winding bobbin 22 causes traversing the yarn 20, the . Cradle 23 is configured to be swingable in a direction coming close to or away from the winding drum 24. Thus, even if increasing the diameter of the package 30 with the the yarn 20 into the package 30 is wound is, it is possible to rotate the package 30 stably by the winding drum 24. As shown in FIG. 2, the outer peripheral surface of the winding drum 24 is traverse groove 27 is formed in a spiral (Tsurumaki linear), wound in a state containing the yarn 20 to the traverse groove 27 by-up drum 24 is rotated, and is configured the yarn 20 so as to traverse.
[0044]
　Winding bobbin 22 by the winding drum 24 is placed opposite to the winding bobbin 22 is driven to rotate, driven to rotate. Yarn 20 while being traversed by the traverse groove 27 and is wound around the winding bobbin 22 rotating. The winding drum 24 is coupled to an output shaft of the drum driving motor 53, the operation of the drum driving motor 53 is controlled by the motor control unit 54. The motor control unit 54 is performing drive and control to stop the drum driving motor 53 receives a control signal from the unit control section 50.
[0045]
　Incidentally, the winding drum 24, rotation sensor 42 for detecting the rotation angle of the winding drum 24 is attached. The rotation sensor 42 is electrically connected to the unit control section 50.
[0046]
　Further, the winding unit main body 16, while the yarn traveling path between the yarn supplying portion 28 and the package forming unit 31, in this order from the yarn supplying section 28 side, the unwinding assisting device 12, a tension applying device 13, a yarn a splicing device 14, and has a yarn monitor device 15, a configuration of arranging the.
[0047]
　The unwinding assisting device 12, by lowering a regulating member 40 that covers a core tube and unwinding of the yarn 20 from the yarn supplying bobbin 21, which assists the unwinding of the yarn 20 from the yarn supplying bobbin 21 it is. Regulating member 40, the yarn by contacting against the balloon formed above the yarn supplying bobbin 21 by the yarn 20 unwound from the yarn supplying bobbin 21 is swayed, imparts appropriate tension to the balloon to assist in the unwinding.
[0048]
　Tension applying device 13, the traveling yarn 20 is intended to impart a predetermined tension. The tension applying device 13, for example, may be a gate type including movable comb teeth arranged with respect fixed comb teeth. Movable comb, such that the comb teeth each other in a state or released state not engage, can be rotated by a rotary solenoid. This by the tension applying device 13, to impart a constant tension to the yarn 20 wound can enhance the quality of the package 30.
[0049]
　Yarn monitor device 15, a defect of the yarn 20 by monitoring the yarn 20 to travel (hereinafter also referred to as "yarn defect".) Is detected, the yarn 20 when the yarn defect is found, the end face fall is caused it not is to cut at appropriate timing. As shown in FIGS. 1 to 3, a yarn monitoring device 15 mainly comprises two yarn unevenness sensor 43, a cutter 46, a control unit 45. The two yarn unevenness sensors 43 and 44 respectively, for example, is constituted by the light projecting element and a light receiving element, the amount of light received by the light receiving element (light receiving amount) to detect the thickness of the yarn 20. By processing the signals from these yarn unevenness sensor 43 and 44 by the control unit 45, while detecting a yarn defect, the speed of the yarn 20 running in the yarn monitoring device 15 (hereinafter, also referred to as "yarn speed" can be detected there.). Further, the control unit 45, Thus, on the basis of the yarn speed detected by estimating the traverse position of the yarn 20, in accordance with the traverse position of the yarn 20, the cutter actuation for actuating the cutter (cutting device) 46 controlling the traveling distance of the yarn 20 when the command signal is output (the cutting device actuating command signal) S3 cuts the yarn 20. Later detailed structure of the yarn monitoring device 15.
[0050]
　The yarn splicing device 14, when yarn cutting carried out by the yarn monitoring device 15 detects a yarn defect or yarn breakage or the like of being unwound from the yarn supplying bobbin 21, the yarn supplying portion 28 (yarn supplying bobbin 21) and bobbin thread side, the yarn on the package forming section 31 (package 30) side, in which joined together. The yarn splicing device 14 can be used as a mechanical type or may use a fluid such as compressed air.
[0051]
　The lower and upper yarn splicing device 14, a lower yarn guiding pipe (a first thread catching and guiding member) 25, which catches and guides the lower yarn on the yarn supplying section 28 side, the yarn on the package forming portion 31 side a yarn guide pipe (second thread catcher guide member) 26 on which catch and guide, is provided. The distal end of the lower yarn guiding pipe 25 is the suction port 32 is formed, a suction mouth 34 is provided at the distal end of the upper yarn guiding pipe 26. In this embodiment, the lateral width of the suction mouth 34 (longitudinal width) is configured approximately the same length and lateral width of the package 30 (the width of the outer peripheral surface). The lower yarn guiding pipe 25 and the upper yarn guiding pipe 26 is connected negative pressure source suitably respectively, can be applied a suction flow into the suction port 32 and the suction mouth 34.
[0052]
　In this configuration, at the time of or during yarn breakage yarn cutting, suction opening 32 of the lower yarn guide pipe 25 catches the lower yarn at a position shown in FIGS. 1 and 2, then rotating upward around an axis 33 to guide the lower yarn to the yarn splicing device 14 by moving. Also, at the substantially the same time, the upper yarn guide pipe 26 is rotated upward about the shaft 35 from the position shown, the suction mouth 34 to upper yarn unwound from the package 30 reversed by the drum driving motor 53 to capture. Subsequently, by the upper yarn guide pipe 26 rotates downward around the shaft 35, so as to guide the upper yarn to the yarn splicing device 14. Thus, the lower yarn and the upper yarn of joining (piecing) is performed by the yarn splicing device 14.
[0053]
　Next, with reference to FIGS. 2 and 3, a detailed description of a configuration of the yarn monitoring device 15.
[0054]
　As shown in FIG. 3 or the like, the yarn monitoring apparatus 15 includes two yarn unevenness sensor 43 and 44, and a cutter 46, a control unit 45. Control unit 45, CPU, RAM, is configured as a small computer having hardware such as a ROM, the ROM stores various software and a control program and the like are stored. By the hardware and said software cooperate, the control unit 45 can function as a yarn defect detecting section 47 and a disconnection control section (yarn cutting control unit) 49 or the like.
[0055]
　As shown in FIG. 2, the first yarn unevenness sensor 43 second yarn unevenness sensor 44 is arranged at a proper interval in the yarn traveling direction. Yarn unevenness sensor 43 and 44 in the present embodiment is configured as a light emitting element and the light receiving element receives the light projected from the light projecting element by the light receiving element, and detects the received light amount. In this configuration, the thickness of the traveling yarn 20 is changed, since the received light amount of the yarn unevenness sensor 43 and 44 is changed, it is possible to detect the thickness unevenness of the yarn 20 (yarn unevenness). The output signal yarn unevenness sensor 43 and 44 (yarn unevenness signals S1, S2) are converted A / D, is input to the controller 45 as shown in FIG. More particularly, the yarn unevenness signal S1, S2 is input to a yarn speed detecting section 48 of the disconnection control section 49 the control unit 45 is provided. Moreover, the yarn unevenness signal S1 from the first yarn unevenness sensor 43 disposed on the downstream side of the second yarn unevenness sensor 44 is input to the yarn defect detecting section 47 for the control unit 45 is provided. However, instead of this, the yarn unevenness signal S2 from the second yarn unevenness sensor 44 disposed upstream of the first yarn unevenness sensor 43, as it is input to the yarn defect detecting section 47 for the control unit 45 is provided good. Or alternatively, both of the yarn unevenness signal S2 from the yarn unevenness signal S1 and the second yarn unevenness sensor 44 from the first yarn unevenness sensor 43, as it is input to the yarn defect detecting section 47 for the control unit 45 is provided good.
[0056]
　Cutter 46 is disposed at a position capable of entering and retracted from the yarn channel, it is driven by a drive mechanism (not shown). By the cutter actuation command signal (cutting device actuating command signal) S3 for actuating the cutter 46 is input to the driving mechanism from the control unit 45 (the cutting control unit 49) shown in FIG. 3, the drive mechanism is immediately driven is, the cutter 46 that were in the retracted position is configured to be able to be entered against the yarn path to cut the yarn 20. The above driving mechanism can be constituted by, for example, a solenoid or the like, in this case, the above-mentioned cutter actuation command signal S3 may be a solenoid driving signal.
[0057]
　Yarn defect detecting section 47, the yarn unevenness signal S1 from the first yarn unevenness sensor 43 disposed on the downstream side, the defect of the yarn 20 as it is necessary to remove by cutting the yarn 20 (e.g., the thickness of the yarn 20 it detects Saga defects such that is less than the threshold value), and outputs a yarn defect detection signal S4 indicative of the detected yarn defect in the disconnection control section 49. Incidentally, when the yarn defect detecting section 47 determines whether the yarn defect, the yarn speed V inputted from the yarn speed detecting section 48 to be described later are also contemplated.
[0058]
　Here, the yarn monitoring device 15 detects a yarn defect, and is configured to cut the yarn 20 by the cutter 46 in order to remove portions of the yarn defect. Accordingly, the yarn defect detection signal S4 yarn defect detecting section 47 is output, it can be said that the cutting of the yarn 20 which is substantially request signal (yarn cutting signal).
[0059]
　Cutting control unit 49, based on the yarn defect detection signal S4 inputted from the yarn defect detecting section 47, and controls the operation of the cutter 46. Disconnection control section 49 includes a yarn speed detecting section 48, a traverse position estimating unit 60, the cutting position adjustment unit 70, the cutter operation command section (cutting device actuating command unit) 52, a.
[0060]
　Yarn speed detecting section 48, the yarn unevenness signal S1 from the first yarn unevenness sensor 43 disposed on the downstream side, the yarn unevenness signal S2 from the second yarn unevenness sensor 44 disposed upstream, by comparing, It calculates the temporal shift amount, the yarn speed V can be calculated (detected) based on the temporal shift amount and the interval between the first and second yarn unevenness sensor 43 and 44. Yarn speed V detected by the yarn speed detecting section 48 is output to the traverse position estimating unit 60. At the same time, the yarn speed detecting section 48, based on the detected yarn speed V, the yarn 20 is fixed length (e.g., 1 mm) generates a pulse signal S5 varies in time corresponding to travel, which traverse position and it outputs the estimation unit 60.
[0061]
　Traverse position estimating unit 60 based on the yarn speed V and the pulse signal S5 inputted from the yarn speed detecting section 48, and estimates the current traverse position of the yarn 20. Signal indicating the estimated traversal location (traverse position signal S6) is output to the cutting position adjustment portion 70.
[0062]
　Cutting position adjusting unit 70, based on the traverse position signal S6 inputted from the traverse position estimation unit 60, the end face drop is likely to occur when performing thread cutting by the cutter 46 if the current thread position determines whether or not. Then, the cutting position adjustment unit 70, based on this determination result, disconnection warning signal indicating to prohibit disconnection of the yarn 20 S7, or the cutting permission signal S8 indicating to allow cutting of the yarn 20, the cutter operation command and it outputs the section 52. Disconnection warning signal S7 and the cutting permission signal S8 is prohibition judging unit 72 of the cutting position adjustment unit 70 outputs the cutter operation command unit 52, a command signal for commanding the operation or non-operation of the cutter 46.
[0063]
　Cutter operation command unit 52, the yarn defect detection signal S4 from the yarn defect detecting section 47 is inputted, examine the contents of the signal inputted from the cutting position adjustment unit 70 at that time, cut the cutter operation command unit 52 If permission signal S8 is input, immediately it outputs a cutter actuation command signal S3 to the cutter 46. On the other hand, if the yarn defect detection signal S4 is the disconnection warning signal S7 to the cutter operation command unit 52 as it is entered is entered, the cutter operation command unit 52, cutting permission signal inputted from the disconnection warning signal S7 wait until switched to the signal S8 (delayed by), and outputs a cutter actuation command signal S3 to the cutter 46. With such a configuration, the control unit 45 of the yarn monitoring device 15 (disconnection control section 49) is cut when a yarn defect is found, the thread 20, at the cutting position adjusted appropriately so that the end faces drop does not occur be able to.
[0064]
　Next, with reference to FIGS. 4 to 8, the configuration of the traverse position estimation unit 60 and the cutting position adjusting unit 70 will be described in more detail. Figure 4 is a block diagram showing the structure of a traverse position estimation unit 60 and the cutting position adjustment portion 70. Figure 5 is a graph illustrating data and the smoothed data it showing the periodic change of the yarn speed V. 6, by using the data showing a periodic change in yarn speed V, the yarn is the reference position P is estimated to be located at an end portion of the traverse area of the package 30 S calculates and, the most recent traversal traveling distance L the distance interval for a graph for explaining the process of determining the. Figure 7 is a diagram for explaining the disconnection warning traversing range set on the end portion of the traverse area of the package 30. Figure 8 is a diagram illustrating a prohibited traverse ratio calculated on the basis of the disconnection warning traversing range.
[0065]
　As shown in FIG. 4, the traverse position estimating unit 60, the data smoothing section (yarn speed smoothing unit) 61, the folded position estimating unit 62, the reference position detection unit 63, the nearest traverse travel distance calculating section 64, and the current traverse It includes a ratio calculation section 65 and the like.
[0066]
　Data smoothing section 61, by calculating the moving average of the yarn speed V received from the yarn speed detecting section 48, it is to smooth the data indicating the periodic change in yarn speed V. That is, data indicating a periodic change in yarn speed V received from the yarn speed detecting section 48 (raw data), vigorously fine irregular changes as shown in FIG. 5 (a), the yarn speed V difficult to capture the overall characteristics of the change. The reason is different, one of which, the yarn 20 is traversed enters the traverse groove 27 of the winding drum 24, is to show a complicated behavior in accordance with the shape of the traverse groove 27 . Therefore, the data smoothing section 61 of the traverse position estimating unit 60, data indicating a periodic change in yarn speed V is smoothed by the moving average method, as shown in FIG. 5 (b), the period of the yarn speed V It is easy to capture the increase and decrease trend. Incidentally, scores taking a moving average, while suppressing the irregular change in yarn speed V described above are appropriately determined so as to periodically increase and decrease trend of the yarn speed V can be properly grasped.
[0067]
　Folded position estimation unit 62 shown in FIG. 4, on the basis of the data representing the periodic change in yarn speed V, the traverse position of the yarn 20 to estimate the folded position is a position folded back at an end portion of the traverse area of ​​the package 30 it is intended. Specifically, when the shape of the package 30 as in this embodiment is a cone-shaped, to exhibit a maximum value yarn speed V when the traverse position of the yarn 20 at the end of the large diameter side of the package 30 Are known. In the present embodiment by utilizing this, a running position where the yarn speed V reaches the maximum in the data of the yarn speed V as shown in FIG. 6, the end of the large diameter side of the traverse position the package 30 of the yarn 20 It was in (the other end) position, i.e., estimated to be folded position.
[0068]
　Reference position detection unit 63 shown in FIG. 4, on the basis of the data representing the periodic change in yarn speed V, the running position (in other words the yarn 20 when it becomes yarn speed V is the maximum in the last, the last package the folded position) of the large diameter side, the reference position P S is detected as. The reference position P S is used as a reference position at the time of estimating the next occurrence mileage of the yarn 20 to the traverse position.
[0069]
　Last traverse travel distance calculating section 64, based on data indicating a periodic change in yarn speed V, the reference position P S detecting the position of the yarn 20 the yarn speed V the most recent at the position before the line reaches the maximum and, from the position reference position P S calculates a distance which the yarn 20 has traveled until, as the travel distance of the yarn 20 per traversal once made most recently. In the following description, the travel distance of one thread 20 per traverse is sometimes referred to as "traversing travel distance". The traverse distance traveled, in other words, it is also possible that the travel distance corresponding to one cycle yarn speed V is increased or decreased. Last traverse traveling distance L is input from the yarn speed detecting section 48 during the running position of the most recent at least two yarns 20 maximum value appeared in the data indicating the periodic change in yarn speed V shown in FIG. 6 by counting the pulse signal S5 is, it is possible to accurately calculate.
[0070]
　Currently traverse ratio calculator 65 is for calculating the current traverse ratio represents the current traverse position of the yarn 20 in a traverse ratio. Here, the traverse ratio, based distance (traverse travel distance) of the yarn 20 travels per one traverse, in some position (the present embodiment, when the yarn 20 is in the traverse end portion of the large diameter side reference position P is a position estimated S from) until the current position the yarn 20 is meant the percentage of distance traveled.
[0071]
　Currently traverse ratio calculating section 65, the reference position P S the distance which the yarn 20 from the up to the current position has traveled is determined by counting the pulse signal S5 inputted from the yarn speed detecting section 48. Next, the current traverse ratio calculating unit 65, a travel distance obtained by dividing the last traverse traveling distance L to the nearest traversing travel distance calculating unit 64 is calculated to determine the current traverse ratio.
[0072]
　Currently traverse ratio, as shown in FIG. 8, usually 0 to 1 a value of (0% as a percentage up to 100%), increases so that the yarn 20 comes close to 1 from 0 in response to being traversed and, upon reaching the 1 back to (i.e., one time of the traverse is completed) 0, increases so as to approach to 1 again. Currently traverse ratio (in other words, the travel distance of the yarn 20 when the yarn speed V indicates the maximum value) position of the yarn 20 when the yarn 20 is in a traverse end portion of the large diameter side as a reference (0), yarn 20 is intended to indicate corresponding to which position the position of the current thread 20 in the process of one round-trip by a traverse. Therefore, the current traverse ratio of the current traverse position of the yarn 20 can be said that substantially represents. The value of the resulting current traverse ratio, as the traverse position signal S6, is currently outputted from the traverse ratio calculator 65 to the cutting position adjustment portion 70.
[0073]
　Cutting position adjustment unit 70 comprises a prohibited traverse ratio calculator 71 and the prohibition judging unit 72 and the like.
[0074]
　Prohibited traverse ratio calculator 71 is for calculating an inhibition traverse ratio represents the range of the travel distance which the yarn cutting is prohibited in the traverse travel distance in the traverse ratio. Prohibiting traverse ratio above, the operator has set in advance by disconnection warning traverse range setting unit of an unillustrated is determined based on the range of the traverse position to prohibit yarn cutting by the cutter 46 (cutting prohibited traversing range). The disconnection warning traversing range setting unit may for example be configured as an input key (not shown) provided above the frame control device.
[0075]
　Figure 7 is a setting example of disconnection warning traversing ranges above are shown. In this example, in order to avoid causing it has been carried out the thread cutting end face fall in both end faces and the vicinity thereof of the package 30 (the end portion of the traverse area of ​​the package 30), in traverse width direction, of the small diameter side traverse position from the end face to 5mm, and the traverse position from the end face of the large diameter side to 5mm is set as the cut prohibit traversing range. However, (5 mm from the small diameter side, 5 mm from the large diameter side) the length of the cut prohibition traversing range is an example, and for example, when the operator manipulates the above disconnection warning traverse range setting unit (input key), for example, 10mm, 15mm, 20mm, 25mm, or can be so suitably changed so that 30mm like.
[0076]
　The length of the disconnection warning traverse above range is preferably set in consideration of the physical properties of the yarn 20 or the like. For example, set a short length of cut prohibition traversing range if the yarn 20 to hard properties fell end surfaces, would be to set a longer length of cutting prohibited traverse range if the yarn 20 tends properties Shi fell end face It is. Further, when the length of the disconnection warning traversing range, this means that the operation of the cutter 46 is delayed greatly, the generation of waste yarn is increased, the length of disconnection warning traversing range in consideration of the viewpoint of reducing waste yarn it is preferable to set the of.
[0077]
　Prohibited traverse ratio calculating unit 71, corresponding to the length of the set disconnection warning traversing range, as described above, the prohibition traverse ratio is calculated based on the wind number and the like of the traverse groove 27 of the winding drum 24 . Prohibited traverse ratio is the range of the travel distance which the cutting of the yarn 20 is prohibited (range indicated by hatching in FIG. 8), expressed in ratio to one mileage thread 10 of the traverse minute. This prohibition traversing ratio using an estimation error of the traverse position by the traverse position estimation unit 60 is determined in anticipation of a suitable margin. Furthermore, considering that a certain amount of time lag occurs a cutter actuation command signal S3 to actually the cutter 46 from the output of the cutter 46 cuts the yarn 20, the travel distance of the yarn cutting is prohibited in prohibited traverse ratio range of the start and end of the cut prohibition is offset so as to be brought forward slightly.
[0078]
　In the following, as shown in FIG. 8, expressed as a percentage, prohibited traverse ratio corresponding to the length of disconnection warning traversing range "5mm from the end surface of the small diameter side" is calculated as 45% to 60%, cut prohibited prohibited traverse ratio corresponding to the length "5mm from the end face of the large diameter side" of the traverse range of 85% to 100% will be described as being calculated as 0% to 3%.
[0079]
　Prohibition determination unit shown in FIG. 4 72, based on the traverse position signal S6 inputted from the traverse position estimation unit 60, the current traverse ratio, ranging prohibition ends from inhibition starting Prohibition traverse ratio of (0% to 3 %, it is determined whether the entered 45% to 60%, or 85% to 100%). Prohibition determination unit 72, if the current traverse ratio is in the range of prohibition traverse ratio, and outputs a disconnection warning signal S7 to the cutter operation command unit 52, the cutter operation command unit 52 to disconnect permission signal S8 otherwise and outputs it to.
[0080]
　Next, treatment traverse position estimation unit 60 and the cutting position adjustment portion 70 of the yarn monitoring device 15 is performed in order to perform thread cutting at the appropriate mileage will be described with reference to FIG. Figure 9 is a flowchart showing the process of traversing position estimation unit 60 and the cutting position adjustment unit 70 is performed to adjust the position of the thread cutting.
[0081]
　Initially, prohibited traverse ratio calculating unit 71 for cutting position adjusting unit 70 is provided, based on the length of the preset disconnection warning traverse range as shown in Figure 7, the yarn 20 travels during one traverse distance as (traverse mileage) reference, to calculate the inhibition traverse ratio represents the range of the travel distance which the yarn cutting is prohibited by traversing ratio (step S101 in FIG. 9). This makes it possible to obtain prohibited traverse ratio shown in FIG. 8 (0% to 3%, 45% to 60%, or 85% to 100%).
[0082]
　Next, data smoothing part 61 traverse position estimation unit 60 comprises calculates the moving average of the yarn speed V obtained from the yarn speed detecting section 48, the thread after smoothing as shown in FIG. 5 (b) to create a data indicating a periodic change of the velocity V (step S102 in FIG. 9).
[0083]
　Then, the folded position estimating unit 62, the travel distance of the yarn 20 showing the yarn speed V is the maximum value as shown in FIG. 6 in the data indicating the periodic change in yarn speed V, the traverse position of the yarn 20 there is estimated as the travel distance of the yarn 20 when there to the end of the large diameter side of the package 30 (the other end) (folded position). Although yarn speed V as shown in FIG. 5 (b) is considered the case shown a maximum value other than the folded position, the travel distance when the traverse position of the yarn 20 is in the large diameter side is previously obtained it is possible to advance some extent estimated based on the folded position and the traversing distance traveled, it may be used a maximum value appearing in the vicinity thereof. Even when a plurality of maximum values appear during a single stroke, the folded position estimation unit 62, among such plurality of maximum values, using the maximum value exceeding a preset or calculated threshold it may be so. That is, the folded position estimation unit 62 may be used a predetermined condition is satisfied maximum value (predetermined maximum value). Of the folded position folded position estimation unit 62 has estimated, folded position closest to the current thread 20 position, the reference position P S is detected as (step S103 in FIG. 9). Further, the reference position P S folded position appearing before once more, the reference position P S with, used as a boundary of the distance interval for immediate traversing travel distance calculating section 64 calculates the nearest traverse traveling distance L (step S104). Specifically, the reference position detection unit 63 in step S103, the reference position P closest folded position to the current SIt is detected as. Moreover, recent traversing travel distance calculating unit 64 in step S104, by counting the pulse signal S5 inputted from the yarn speed detecting section 48 between the closest two of the folded position to the current, last traverse traveling distance L to calculate.
[0084]
　Incidentally, the folded position estimation unit 62, as described above, estimates the folded position on the basis of data indicating a periodic change in yarn speed V of smoothed by the moving average method. Therefore, since the receiving hardly the influence of fine irregular variations in yarn speed V, it is possible to estimate the folded position with high accuracy.
[0085]
　Next, the current traverse ratio calculating section 65, the reference position P S mileage of the yarn 20 from to the current position of the yarn 20, calculated by counting the pulse signal S5 inputted from the yarn speed detecting section 48 , by dividing the travel distance obtained in the last traverse traveling distance L, to get the current traverse ratio shown in FIG. 8 (step S105 in FIG. 9).
[0086]
　Then, prohibition judging unit 72 that the cutting position adjusting section 70 is provided, the current traverse ratio obtained in step S105, prohibition traverse ratio is prohibited traverse ratio calculator 71 calculated in step S101 (0% ~ 3%, 45 % to 60%, or checks whether or not within the range of 85% to 100%) (step S106). Then, if the current traverse ratio is within the range of prohibition traverse ratio, and outputs a disconnection warning signal S7 to the cutter operation command unit 52 (step S107), the cutter operation command unit 52 to disconnect permission signal S8 otherwise and outputs (step S108). Then, in either case the process returns to step S102, repeating the above process.
[0087]
　As described above, the current traverse ratio are those showing substantially the current traverse position, also inhibited the traverse ratio calculation unit 71, by converting the length of disconnection warning traversing range of 7 to traverse ratio it is intended. Therefore, step S106 of the above is essentially it can be said that the estimated current traverse position is determined whether it is in the disconnection warning traversing range.
[0088]
　The flow shown in FIG. 9, the cutting position adjustment unit 70, the current traverse position estimated in the traverse position estimating unit 60 in response to changes in the signal to be output to the cutter operation command unit 52 and the disconnection warning signal S7 the process of switching between the cutting permission signal S8, and repeatedly performs one cycle of the traverse units.
[0089]
　Here, the cutter operation command unit 52 shown in FIG. 3, when the yarn defect detection signal S4 associated with the yarn defect detecting section 47 detects a yarn defect has been input, the cutting permission signal S8 from the cutting position adjustment portion 70 If it has been input immediately outputs a cutter actuation command signal S3 to the drive mechanism of the cutter 46. On the other hand, waiting until the above yarn defect detection signal S4 even if entered, if the disconnection warning signal S7 is input from the cutting position adjustment unit 70, the cutting permission signal S8 from the cutting position adjusting unit 70 is input output from to the cutter actuation command signal S3 to the drive mechanism of the cutter 46. Thus, the travel distance of the yarn being the yarn cutting by the cutter 46 is adjusted as necessary (extension), it is possible to cut the yarn 20 in a risk-free position of the end face fall.
[0090]
　Next, the control unit control section 50 is performed will be briefly described with reference to FIG. 10. Figure 10 is a flowchart showing a process unit control section 50 is performed.
[0091]
　The unit control section 50, normal drives the winding drum 24 so as to forward the package 30, performs the winding of the yarn 20 into the package 30 (step S201). Meanwhile, the unit control section 50, a signal indicative of the cut yarn 20 monitors whether or not input from the control unit 45 of the yarn monitoring device 15 to the unit control section 50 (step S202).
[0092]
　The yarn monitoring device 15 a signal indicative of the cut yarn 20 with that detects a yarn defect is inputted from the yarn monitoring device 15, the unit control section 50, a wound yarn defect in the package 30 to draw a region including, reversing the winding drum 24 by controlling the drum driving motor 53 (step S203). Here, the control unit 45 of the yarn monitoring device 15, the cutter operation command unit 52 from the position of the yarn 20 when the defect of the yarn 20 is detected by the yarn defect detecting section 47 actuates the cutter 46 the yarn 20 is cut the travel distance of the yarn 20 to the position of the yarn 20 when it is, for example, calculated by the yarn speed detecting section 48 counts the pulse signal S5 to output, and outputs to the unit control section 50. Unit controller 50, in step S203, until the yarn 20 having a length obtained by adding an appropriate margin length calculated as described above is unwound from the package 30, to reverse the package 30. At this time, the unit control section 50, by which obtains the rotation angle of the winding drum 24 from the rotation sensor 42 to calculate the length of the yarn 20, the yarn of sufficient length comprising a part of the detected yarn defect 20 to ensure that the unwound from the package 30, monitors the reversal of the winding drum 24.
[0093]
　When the yarn 20 is pulled out over the length that can remove a yarn defect, the unit control section 50 controls to stop the drum driving motor 53, joined together and the upper yarn and the lower yarn by the yarn splicing device 14 ( step S204). The region containing the yarn defect of the one of the drawn needle thread is removed as waste yarn during piecing by the yarn splicing device 14. After that, the process returns to step S201, the winding of the yarn 20 is resumed.
[0094]
　In the winder unit 10 of the present embodiment, even if the yarn monitoring device 15 detects a yarn defect, when delaying the actuation of the cutter 46 for the end face fall prevention, by the amount of cutting of the yarn 20 is delayed, the yarn 20 is wound additionally to the package 30. In this regard, according to the control of FIG. 10, after such additionally wound portion a sufficient length of the yarn 20, including the is unwound by reverse rotation of the package 30, the yarn splicing by the yarn splicing device 14 operation is performed. Therefore, it is possible to piecing and reliably remove the yarn defect.
[0095]
　As described above, the cutting control unit 49 provided in the yarn monitor device 15 in this embodiment controls the operation of the cutter 46 to cut the yarn 20 wound into the package 30 while being traversed. The disconnection control section 49 includes a yarn speed detecting section 48, a traverse position estimating unit 60, the cutting position adjustment unit 70, a. Yarn speed detecting section 48 detects the yarn speed V of the yarn 20 travels. Traverse position estimating unit 60 based on the yarn speed V detected by the yarn speed detecting section 48, estimates the traverse position of the yarn 20. Cutting position adjusting unit 70 in accordance with the traverse position of the yarn 20 estimated by the traverse position estimation unit 60, the cutter 46 is adjusted cutting position to cut the yarn 20.
[0096]
　Thus, by operating the cutter 46 to a position to cut the yarn 20 by adjusting in accordance with the traverse position of the yarn 20, for example, fear is positioned where the end face drop occurs in the yarn 20 and will not be cut the yarn 20 it is therefore possible to prevent the end surface off of the yarn 20. Further, since the traverse position estimating unit 60 estimates the traverse position of the yarn 20 on the basis of the yarn speed V detected by the yarn speed detecting section 48, as compared with the case of providing a sensor for detecting a traverse position of the yarn directly, it is possible to simplify the configuration.
[0097]
　Further, the cutting control unit 49 of the present embodiment, the cutting position adjustment unit 70, when the traverse position of the yarn 20 is at the end of the traverse area of ​​the package 30, the traverse position is moved toward the center of the traverse area as it will cutter 46 is operated to adjust the travel distance of the yarn 20 when operating the cutter 46.
[0098]
　Thus, a simple control to increase the travel distance of the yarn 20 when operating the cutter 46, it is possible to prevent the end surface off of the yarn 20.
[0099]
　Further, the cutting control unit 49 of the present embodiment, the traverse position estimation unit 60, based on the characteristics of the yarn speed V detected by the yarn speed detecting section 48, estimates the traverse position.
[0100]
　Thus, as compared with the case of detecting directly traverse position by the position sensor or the like arranged in the traverse region, with a simple configuration, it is possible to adjust the cutting position to cut the yarn 20 in position.
[0101]
　Further, in this embodiment, package 30 winder unit 10 is formed by winding the yarn 20 is a cone-shaped diameter increases toward the other end from the one axial end. Then, the traverse position estimation unit 60 included in the cutting control unit 49, the travel distance of the yarn 20 when the extreme value in the process of yarn speed V detected by the yarn speed detecting section 48 increases or decreases periodically (maximum value) appeared based on estimates the traverse position.
[0102]
　Thus, by utilizing the fact that the yarn speed V increases and decreases periodically in the case of forming the package 30 of the cone-shaped winding the yarn 20, the traverse position can be properly estimated.
[0103]
　Further, the cutting control unit 49 of the present embodiment, the traverse position estimation unit 60 includes a data smoothing unit 61 for smoothing the data indicating the periodic change in yarn speed V detected by the yarn speed detecting section 48. Traverse position estimating unit 60 based on the travel distance of the yarn 20 when the extreme value in the process of yarn speed V of smoothed by data smoothing unit 61 increases and decreases periodically (maximum value) appears, the traverse position to estimate.
[0104]
　Thus, it is possible to suppress errors due to fine irregular fluctuations caused in the yarn speed V, it is possible to accurately estimate the traverse position.
[0105]
　Further, the cutting control unit 49 of the present embodiment, the data smoothing unit 61 smoothes the moving average method data indicating a periodic change in yarn speed V.
[0106]
　Thus, by determining the moving average scores appropriately, while suppressing errors due fine irregular fluctuations caused in the yarn speed V, be adequately capture the increasing or decreasing trend of the yarn speed V appearing in accordance with the traverse position it can. As a result, it is possible to accurately estimate the traverse position. Further, it is possible to smooth the yarn speed V by a simple calculation.
[0107]
　Further, the cutting control unit 49 of the present embodiment, the traverse position estimation unit 60, based on at least the most recent travel distance between the two timing the maximum value of the yarn speed V appeared (last traverse traveling distance L) Te, it estimates the traverse position of the yarn 20.
[0108]
　Thus, based on the travel distance of the yarn 20, the traverse position of the yarn 20 can be properly estimated. Further, by reference to the travel distance of the yarn 20 when it appears local maximum in the yarn speed V, a cycle of increase and decrease of the yarn speed V easily and clearly captured, one cycle of increase and decrease of yarn velocity V (traverse the travel distance of the yarn corresponding to one cycle) can be obtained accurately. Furthermore, the thread in one cycle of the running distance of the yarn 20 corresponding to the traverse one time may vary as the diameter of the package 30 increases, but according to the present embodiment, for example, the most recent yarn speed V increases or decreases 20 since estimates the traverse position of the yarn 20 on the basis of the traveling distance (the nearest traverse traveling distance L), the estimation accuracy of the traverse position can be stabilized.
[0109]
　Further, the cutting control unit 49 of the present embodiment, operation of determining whether the operation of the cutter 46 on the basis of the traverse position of the yarn 20 which is estimated by the traverse position estimation unit 60 the cutter operation command unit 52 to the cutter 46 or It includes a prohibition determination portion 72 for outputting a command signal for commanding inoperative. Prohibition determination unit 72, the travel distance of the yarn 20 which is detected during the most recent one period the yarn speed V is increased or decreased (the last traverse traveling distance L), the yarn 20 when the maximum value of the yarn speed V appears a travel distance, with respect to the prohibition range representing a range in which thread cutting is prohibited in one period of the traverse and (0% to 3%, 45% and 60%, 85% and 100%), the yarn a travel distance of the yarn 20 which maximal value of the velocity V is detected from the running position of the nearest thread emerged (reference position) until now, based on to determine whether the operation of the cutter 46.
[0110]
　Thus, from the running position of the nearest yarn 20 maximum value of the yarn speed V appeared to date to detect a travel distance which the yarn 20 has traveled, the travel distance, traveling thread cutting is prohibited in the prohibited range by examining the distance whether within the scope of, whether the operation of the cutter 46 appropriately and to easily determine, it is possible to prevent the end surface off of the yarn 20. Moreover, the travel distance of the yarn 20 corresponding to the traverse 1 dose varies as the diameter of the package 30 increases, but in the present embodiment, the travel distance of the yarn 20 in the last one period of the yarn speed V is increased or decreased (the most recent since whether the operation of the cutter 46 on the basis of the traversing travel distance L) is determined, the end face off of the yarn 20 can be prevented stably without being affected by the increase in the diameter of the package 30.
[0111]
　Further, the cutting control unit 49 of the present embodiment is capable of changing the length of the disconnection warning traversing range ranges for prohibiting the thread cutting (see Figure 7) at the end of the traverse area of ​​the package 30 . Cutting position adjusting unit 70, when the yarn defect detection signal S4 is input, when the traverse position estimated by the traverse position estimation unit 60 is in the disconnection warning traverse range, the traverse position of the yarn 20 is moved as the cutter 46 is operated after deviating from the disconnection warning traversing range, to adjust the travel distance of the yarn 20 when the cutter 46 is actuated.
[0112]
　Thus, since the delay before moving to a position where the traverse position of the yarn 20 is out of the cut prohibit the traverse range by operating the cutter 46 from the allowed (the yarn 20 traveling) is to cut the yarn 20, the end surface off of the yarn 20 it can be reliably prevented. Further, it is possible to change the length of disconnection warning traversing range software manner, the operator will be able to appropriately change the length of disconnection warning traversing range in consideration of the physical properties of the yarn 20, the convenience it is possible to improve.
[0113]
　Moreover, the yarn monitoring apparatus 15 of the present embodiment is provided with a said cutting control unit 49, further comprising a yarn defect detecting section 47 for detecting a defect of the yarn 20. Yarn defect detecting section 47, when detecting a defect of the yarn 20, and outputs a yarn defect detection signal S4 as a working signal of the cutter 46 to cut the control unit 49.
[0114]
　Thus, when the yarn defect detecting section 47 detects a defect of the yarn 20 by the cutter 46 at a travel distance of the yarn 20 to the end face dropped is adjusted so as not to generate the yarn 20 can be cut the yarn 20 .
[0115]
　Moreover, the yarn monitoring apparatus 15 of this embodiment, the cutting device (in this embodiment, the cutter 46) comprises a.
[0116]
　Thus, the exchange of control signals from the detection of defects in the yarn 20 to actuate the cutter 46 so it is easy to complete in a yarn monitor device 15, it is possible to simplify the configuration.
[0117]
　Further, the yarn monitor device 15 of this embodiment, the cutting device is a cutter 46.
[0118]
　Thus, it is possible to cut the yarn 20 with a simple configuration.
[0119]
　Furthermore, the winder unit 10 of the present embodiment includes provided with a said yarn monitoring device 15, the yarn supplying portion 28, a package forming section 31, the. The yarn supplying portion 28, the yarn feeding bobbin 21 is supported. Package forming unit 31 winds the yarn 20 of the yarn feeding bobbin 21 of the yarn feeding section 28 to form the package 30. Yarn monitor device 15 is disposed between the yarn supplying portion 28 and the package forming unit 31.
[0120]
　Thus, it is possible to provide a winder unit 10 of the end face-off of the thread 20 is less likely to cause simple configuration.
[0121]
　Furthermore, the winder unit 10 of this embodiment comprises a winding drum 24, a yarn splicing device 14, the unit control section 50, the. Winding drum 24 rotates the package 30 contacts the package 30 in order to wind the yarn 20 from the yarn supplying portion 28 to the package 30. The yarn splicing device 14, when the cutter 46 is then yarn 20 is cut operation is performed with the yarn 20 from the yarn supplying portion 28, the yarn 20 from the package forming unit 31, a yarn splicing operation of joining the. Control unit 45 controls the winder unit 10. Control unit 45, the yarn 20 over a travel distance over the length of the yarn 20 from the position of the yarn 20 to a position for cutting by operating the cutter 46 when the defect of the yarn 20 is detected by the yarn defect detecting section 47 to withdraw from the package 30, and controls the take-up drum 24 so as to reverse the package 30, and then to cause to perform the yarn splicing operation to the yarn splicing device 14.
[0122]
　That is, in the winder unit 10 includes the above-described yarn monitoring apparatus 15, even the yarn defect detecting section 47 detects a defect of the yarn 20, it may be delayed timing of the operation of the cutter 46 in order to prevent the end face fall occurs. In this respect, according to the configuration of the present embodiment, even if the yarn 20 only package 30 min the operation of the cutter 46 is delayed is wound additionally, the yarn 20 having a sufficient length including its Additions the so splicing device 14 after pulled out from the package 30 to perform the yarn splicing operation, it is possible to reliably remove the defect of the yarn 20 detected by the yarn defect detecting section 47.
[0123]
　Having described the preferred embodiments of the present invention, the above-described configuration can be modified as below.
[0124]
　In the above embodiment, the folded position estimation unit 62, the travel distance of the yarn 20 when the yarn speed V becomes a maximum value in the data of the yarn speed V, the larger diameter of the traverse position the package 30 of the yarn 20 end is estimated to be (the other end of). However, instead of this, the folded position estimating unit 62, the travel distance of the yarn 20 when the yarn speed V becomes the minimum value, the smaller diameter end of the traverse position the package 30 of the yarn 20 (one end of the) it may be estimated that there. It this case, the most recent of the traverse travel distance L, which counts the pulse signal S5 inputted from the yarn speed detecting section 48 during the running position of at least the last two threads 20 that the minimum value of the yarn speed V appeared it can be obtained by. Incidentally, there may be cases where a plurality of local minimum values ​​during one traverse stroke appears, but when such a folded position estimation unit 62, among a plurality of such minima, a predetermined condition is satisfied it may be used a minimum value (a predetermined minimum value).
[0125]
　In the above embodiment, disconnection warning traversing range yarn cutting by the cutter 46 is prohibited, is configured to be changed by the operator using the disconnection warning traverse range setting unit. However, disconnection warning traversing range may be immutable. Alternatively, instead of this, disconnection warning traverse range, the winding conditions of the yarn 20, the yarn speed V, may be capable of changing automatically according to the type of physical properties and yarn defect of the yarn 20.
[0126]
　If irregular variation occurring in yarn speed V detected by the yarn speed detecting section 48 is small, it is also possible to omit the data smoothing section 61.
[0127]
　In the above embodiment, the shape of the package 30 is assumed to be cone-shaped. However, the shape of the package is not necessarily limited thereto, it is also possible to package shape cheese shape example instead. In that case, the traverse position estimating unit 60, for example, to detect the tendency of a change in yarn speed in in one traverse caused by configuration of traverse groove formed in the winding drum to drive the package cheese shape Accordingly, it is possible to estimate the traverse position.
[0128]
　The above embodiments, by the package 30 is in contact with the winding drum 24 is driven to rotate, and assumed that the package 30 the yarn 20 is rotated is wound. However, aspects of winding the yarn 20 into the package 30 is not limited to this, for example, instead of this, or a package as a driven directly by the motor. Further, instead of traversing the yarn 20 by the traverse groove 27 of the winding drum 24 may traverse the yarn by reciprocating the traverse guide.
[0129]
　Adjustment of the working position of the cutter 46 is not limited to thread cutting due to the yarn defect detecting section 47 detects a yarn defect, the yarn 20 by forced disconnection command signal for example inputted from the unit control section 50 to the yarn monitoring apparatus 15 etc. when cutting by the cutter 46, it can be applied to a variety of thread cutting.
[0130]
　In the above embodiment, as shown in FIG. 2, the lateral width of the suction mouth 34 (longitudinal width) is configured approximately the same length and lateral width of the package 30 (the width of the outer peripheral surface). However, instead of this, it is also possible to configure narrower than the width of the longitudinal width package outer peripheral surface of the suction mouth (suction ports). In that case, as the width of the region to allow out yarn cutting the traverse width is the longitudinal width substantially equal to the suction mouth, it is desirable to set the cut prohibition traversing range. Specifically, for example, a longitudinal width of 3 inches suction mouth, if the width of the outer peripheral surface of the package 30 (traverse width) is 6 inches 1.5 inches (about from both ends setting the length of up to 38mm) as disconnection warning traversing range. With this configuration, even when the longitudinal direction of width of the suction mouth (suction port) is small, it is possible to suck and catch the yarn end in a short knotting time. This configuration narrows the longitudinal width of the suction mouth (suction port), there is an advantage that it is possible to reduce the energy (vacuum) necessary to suck and catch the upper yarn at the suction mouth.
[0131]
　In the above embodiments, the cutter 46 is assumed to be provided to the yarn monitoring device 15. However, not limited thereto, and may be as the cutter is provided separately from the yarn monitoring apparatus.
[0132]
　In the above embodiment, the cutting device is assumed to be the cutter 46. However, the present invention is not limited thereto, as long as it can separate a single yarn 20 into two.
[0133]
　In the above embodiments, the cutting position adjustment unit 70, it is assumed that outputs one of the cutting permission signal S8 to the cutter operation command unit 52 and the disconnection warning signal S7, it is not necessarily limited to this, for example, this instead, it is assumed that outputs only disconnect permission signal S8, while the cut permission signal S8 is not outputted may as judged by the side of those cutting is prohibited and the cutter operation command unit 52.
[0134]
　In the above described embodiment, the yarn 20 is intended to be traversed by the winding drum 24 is rotated, not limited to this, for example, instead of this, the yarn 20 is traversed by the traverse arm it may be a thing. In this case, since the random variations of the yarn speed V is reduced, in some cases it can be omitted smoothed data.
[0135]
　The yarn speed V, may be detected at a location other than the yarn monitoring device 15.
[0136]
　In the above embodiment, after calculating the traverse ratio was assumed to set a prohibited range to prohibit disconnection of the yarn 20 in this traversal ratio. However, not limited to this, without asking for traversing ratio may be prohibited range seeking directly the travel distance of the yarn 20 cut the yarn 20 is prohibited.
[0137]
　The above embodiments, performs control based on the travel distance of the yarn 20 was assumed to cut the yarn 20 at a travel distance end face drop hardly occurs. In such control, there is a merit in that a change in yarn speed V may not be taken into account. However, instead of this, performs control based on the cutting timing of the yarn 20, it is also possible to cut the yarn 20 at the timing at which the end face drop hardly occurs.
[0138]
　Traverse mileage, seeking traveling distance between each travel position of the nearest three or more yarns 20 maximum value of the yarn speed V appeared, it may be calculated by taking the average of these. Alternatively, seeking traveling distance between each travel position of the nearest three or more yarns 20 minimum value of the yarn speed V appeared, it may be calculated by taking the average of these.
DESCRIPTION OF SYMBOLS
[0139]
　15 yarn monitor device
　20 the thread
　30 package
　46 the cutter
　47 yarn defect detecting section
　48 yarn speed detecting section
　52 cutter actuation command section (cutting device actuating command
　unit) 60 traverse position estimator
　70 cut timing adjuster

The scope of the claims
[Requested item 1]In thread cutting control unit that controls the operation of the cutting device for cutting the yarn wound into the traversed while packaged,
a yarn speed detecting section for detecting a yarn speed that the yarn travels,
detected by the yarn speed detecting section the based on the yarn speed, and the traverse position estimation unit that estimates a traversal location of the yarn,
in accordance with the traverse position of the yarn was estimated by the traverse position estimation unit, wherein the cutting device to adjust the cutting position to cut the thread a cutting position adjuster
thread cutting control apparatus comprising: a.
[Requested item 2]A thread cutting apparatus according to claim 1,
wherein the cutting position adjusting unit, when the traverse position of the yarn at the end of the traverse region of the package, is the traversal location closer to the center of the traverse area as the cutting device after moving is operated, the thread cutting control apparatus characterized by adjusting the travel distance of the yarn when actuating the cutting device.
[Requested item 3]A thread cutting apparatus according to claim 1 or 2,
wherein the traverse position estimating unit, and characterized in that on the basis of the yarn speed of the features detected by the yarn speed detecting section, and estimates the traverse position thread cutting control apparatus for.
[Requested item 4]A thread cutting apparatus according to claim 1 or 2,
wherein the package is a cone whose diameter increases toward the other end from the one axial end,
the traverse position estimation unit, the yarn speed detecting section in based on the travel distance of the yarn when the yarn speed detected appeared extreme value in the process of increasing and decreasing periodically, thread cutting control apparatus and estimates the traverse position.
[Requested item 5]A thread cutting apparatus according to claim 4,
wherein the traverse position estimation unit, a yarn speed smoothing unit that smoothes the data indicating the periodic change of the yarn speed detected by the yarn speed detecting section provided,
the traverse position estimating portion, based on the travel distance of the yarn when the yarn speed after smoothing by the yarn speed smoothing unit appeared extreme value in the process of increasing and decreasing periodically, estimate the traverse position thread cutting control apparatus characterized by.
[Requested item 6]A thread cutting apparatus according to claim 5,
wherein the yarn speed smoothing unit, the thread cutting control apparatus characterized by smoothing by moving average method data indicating a periodic change of the yarn speed .
[Requested item 7]A thread cutting control apparatus according to any one of claims 4 to 6,
the traverse position estimation unit during the running position of the yarn of at least the two most recent times the maximum value of the yarn speed appeared mileage, or, based on the travel distance between the running position of the yarn of at least the last two minimum values of the yarn speed appears, thread cutting control, characterized in that estimating the traverse position of the yarn apparatus.
[Requested item 8]A thread cutting apparatus according to claim 7,
wherein the cutting the cutting device actuating command section determines whether the operation of the cutting apparatus based on the traverse position of the yarn which has been estimated by the traverse position estimation unit It includes a prohibition determination unit that outputs a signal for commanding the operation or non-operation of the apparatus,
the prohibition determination unit,
the traverse travel distance the yarn speed is travel distance of the yarn is detected during the most recent one period to increase or decrease If,
based on the travel distance of the yarn when the maximum or minimum value of the yarn speed appears, the prohibited range representing a range in which thread cutting is prohibited in one cycle of the traverse,
the maximum of the yarn speed value or travel distance of the yarn is detected between the running position of the nearest thread minimum value appears to date,
based on the thread cutting control, characterized in that to determine whether the operation of the cutting device apparatus.
[Requested item 9]A thread cutting control apparatus according to any one of claims 1 to 8,
changeably the length of disconnection warning traversing range in the range of prohibiting the yarn cut at the end of the traverse region of the package is configured,
the cutting position adjusting unit, when the thread cutting signal requesting disconnection of the yarn is input to the yarn cutting control device, the estimated traversal location in the traverse position estimating unit said disconnection warning traversing range If there is within the so cutting device is operated, to adjust the travel distance of the yarn when the cutting device is operated after the traverse position of the yarn deviated from the disconnection warning traversing range by moving thread cutting control apparatus according to claim.
[Requested item 10]The yarn monitoring device comprising a yarn cutting control apparatus according to any one of claims 1 to 9,
further comprising a yarn defect detecting section for detecting a defect of the yarn,
the yarn defect detecting section, the Upon detecting a defect of a yarn, a yarn monitoring device and outputs a yarn defect detection signal as a yarn cutting signal requesting the cut yarn to the yarn cutting control device.
[Requested item 11]The yarn monitoring device according to claim 10,
the yarn monitoring apparatus, characterized in that it comprises the cutting device.
[Requested item 12]The yarn monitoring device according to claim 11,
the yarn monitoring apparatus, wherein the cutting device is a cutter.
[Requested item 13]The yarn winding apparatus comprising a yarn monitoring device according to any one of claims 10 to 12,
a yarn supplying section supplying bobbin is supported,
the yarn of the yarn supplying bobbin of the yarn supplying section a package forming unit for forming the package by winding
provided with,
the yarn monitoring apparatus, a yarn winding apparatus characterized in that it is disposed between the package forming portion and the yarn supplying section.
[Requested item 14]The yarn winding apparatus according to claim 13,
a winding drum which yarn in contact with the package for winding the package to rotationally drive the package from the yarn supplying section,
the cutting device is actuated and when the yarn is cut, a yarn from the yarn supplying section, a yarn from the package forming section, a yarn splicing device for performing yarn splicing operation joining together,
control for controlling the yarn winding device and parts,
with a
said control unit, or longer travel distance of the yarn from the position of the thread to the position of cutting by operating the cutting device when a defect of the yarn in the yarn defect detecting section is detected the yarn to draw from the package over to, the controlling the winding drum so as to reverse the package, taken subsequently winding, characterized in that to perform the yarn splicing operation in the yarn splicing device unit.