Title of invention: yarn winding machine
Technical field
[0001]
　The present disclosure relates to a yarn winding machine.
Background technology
[0002]
　For example, Patent Document 1 describes a yarn winding machine that winds a yarn around a bobbin to form a package. In such a yarn winding machine, the shape of the package is adjusted by pressing the outer peripheral surface of the package against the touch roller.
Prior art documents
Patent literature
[0003]
Patent Document 1: JP-A-2014-108844
Summary of the invention
Problems to be Solved by the Invention
[0004]
　Here, for example, in order to adjust the shape of the package, the outer peripheral surface of the package needs to be in contact with the touch roller in a predetermined contact state. Therefore, in the present technical field, it is desired to be able to determine the contact state of the bobbin or the package that contacts the touch roller.
[0005]
　Therefore, the present disclosure describes a yarn winding machine that can determine the contact state of a bobbin or a package that contacts the touch roller.
Means for solving the problem
[0006]
　The present disclosure is a yarn winding machine that winds a yarn around a cone-shaped bobbin to form a cone-shaped package, and includes a cradle that rotatably supports the bobbin by a bobbin holding portion that holds the bobbin, and a cradle that is attached to the cradle. A bobbin or a package by moving a drive unit that rotates the bobbin by rotating the bobbin holding unit having a rotation shaft that is integrally rotatably connected to the bobbin holding unit and a yarn guide unit on which the yarn is hooked. A traverse device that traverses the wound yarn, a package peripheral speed acquisition unit that acquires the peripheral speed of the outer peripheral surface of the bobbin or the package at a predetermined position in the rotation axis direction of the bobbin as the first peripheral speed, and the bobbin or the package. Of the touch roller that contacts the outer peripheral surface of the touch roller and is driven to rotate by the rotation of the bobbin or the package, a roller peripheral speed calculating unit that calculates the peripheral speed of the outer peripheral surface of the touch roller as a second peripheral speed, and a package peripheral speed obtaining unit. And a contact state determination unit that determines the contact state of the bobbin or the package that contacts the touch roller by comparing the first peripheral speed acquired in step 1 with the second peripheral speed calculated by the roller peripheral speed calculation unit. , Is provided.
[0007]
　Here, when the rotating bobbin or package is in contact with the touch roller, when the outer peripheral surface of the large diameter side end of the bobbin or package is in contact with the touch roller, and when the bobbin or package has a small diameter side end The peripheral speed of the touch roller is different from that when the outer peripheral surface is in contact with the touch roller. As described above, even if the rotation speed of the bobbin or the package is constant, the peripheral speed of the touch roller changes according to the contact portion of the bobbin or the package that contacts the touch roller. Therefore, the contact state determination unit compares the first peripheral speed, which is the peripheral speed at a predetermined position on the outer peripheral surface of the bobbin or the package, with the second peripheral speed, which is the peripheral speed of the touch roller. It is possible to determine which part of the bobbin or the package is in contact with the touch roller. That is, the contact state determination unit can determine the contact state of the bobbin or the package. In this way, the yarn winding machine can determine the contact state of the bobbin or package that contacts the touch roller.
[0008]
　The package peripheral speed acquisition unit derives a first peripheral speed, which is the peripheral speed of the outer peripheral surface of the bobbin or the package at a predetermined position, by calculation based on the peripheral speed calculation information for calculating the peripheral speed. Good. In this case, the package peripheral speed acquisition unit can acquire the first peripheral speed that is the peripheral speed of the outer peripheral surface of the bobbin or the package at a predetermined position by calculation.
[0009]
　The peripheral speed calculation information may include at least one of the shape of the bobbin, the rotation speed of the bobbin, and the yarn speed of the wound yarn. In this case, the package peripheral speed acquisition unit can accurately calculate the first peripheral speed using these values.
[0010]
　The yarn winding machine is a bobbin information input unit for inputting bobbin information that specifies the shape of the bobbin, and peripheral speed information in which the peripheral speed of the outer peripheral surface of the bobbin at a predetermined position and the bobbin shape are associated with each other. The package peripheral speed acquisition unit further includes a peripheral speed information storage unit that stores the shape of the bobbin, and the package peripheral speed acquisition unit determines the bobbin shape specified by the bobbin information input from the peripheral speed information storage unit. The corresponding peripheral speed may be acquired as the first peripheral speed. In this case, the package peripheral speed acquisition unit can acquire the peripheral speed from the peripheral speed information storage unit without performing calculation.
[0011]
　The yarn winding machine includes a notification determination unit that determines whether the contact state determined by the contact state determination unit is a predetermined notification target contact state, and the notification determination unit determines the contact target contact. It may further be provided with a notifying unit that gives notification when it is determined to be in the state. In this case, the operator of the yarn winding machine can grasp the contact state of the bobbin or the package based on the notification result of the notification unit. Then, the operator can take measures such as adjusting the contact state of the bobbin or the package or stopping the winding of the yarn.
[0012]
　The yarn winding machine further includes a contact state input unit for inputting the contact state of the notification target, and the notification determining unit determines the notification state input by the contact state input unit as the predetermined contact state of the notification target. The contact state of the object is used. In this case, the operator of the yarn winding machine can set the contact state of the notification target using the contact state input unit. The operator of the yarn winding machine can switch the contact state of the notification target according to the type of the yarn to be wound and the like.
[0013]
　糸巻取機は、ボビン又はパッケージによって巻き取られる糸の糸速を検出する糸速検出部を更に備え、当接状態判定部は、更に、糸速検出部で検出された糸速とローラ周速算出部で算出された第２周速との差の時間的変化に基づいて、当接状態を判定してもよい。ここで、例えば、ボビンの大径側端部がタッチローラに当接している場合、糸が巻き取られるに従ってボビンとタッチローラとの間の糸の層（糸の量）が増加する。ボビン及びパッケージがコーン型であり、大径側と小径側とでは周速が異なるため、パッケージの外周面とタッチローラの外周面とは一点（当接点）で接する。そして、糸の層の増加に伴って、パッケージの外周面とタッチローラとの当接点は、パッケージ外周面の中央位置（回転軸方向の中央位置）に向けて移動する。この当接点の移動の速さは、ボビンとタッチローラとの隙間が糸によって埋められる速さによって変化する。すなわち、例えば、ボビンの大径側端部がタッチローラに当接した状態とする。この状態で、ボビンとタッチローラとの隙間が広い場合（ボビンの小径側端部とタッチローラ外周面との間が広い場合）は、ボビンとタッチローラとの隙間が狭い場合（ボビンの小径側端部とタッチローラ外周面との間が狭い場合）と比べて、当接点の移動が遅い。また、糸はパッケージの大径側端部と小径側端部との間でトラバースされながら巻き取られているため、パッケージ外周面の中央位置における周速とは、糸速（糸の平均の走行速度）となる。このため、当接点がパッケージ外周面の中央位置付近まで移動した場合、タッチローラの周速は、パッケージ外周面の中央位置における周速とほぼ同じとなる。すなわち、タッチローラの周速が、糸速とほぼ同じとなる。このように、ボビンに糸が巻き取られるに従って、タッチローラの周速が糸速に収束する。また、タッチローラの周速が糸速に収束するときの速さは、ボビンとタッチローラとの隙間の大きさ、すなわち、タッチローラの回転軸に対するボビン（パッケージ）の回転軸の傾斜の状態によって変化する。従って、当接状態判定部は、糸速とタッチローラの周速である第２周速との差の時間的変化に基づいて、タッチローラに対するボビン（パッケージ）の傾斜の状態、すなわち、タッチローラに対するパッケージの当接状態を判定することができる。
[0014]
　The yarn winding machine may further include a contact state storage unit that stores the identification information for identifying the package and the contact state determined by the contact state determination unit for the package in association with each other. In this case, the operator of the yarn winding machine or the like can confirm the contact state when the yarn is wound around the package based on the information stored in the contact state storage unit even after the package is formed.
Effect of the invention
[0015]
　According to the present disclosure, it is possible to determine the contact state of the bobbin or the package that contacts the touch roller.
Brief description of the drawings
[0016]
FIG. 1 is a front view of an automatic winder including a winder unit according to an embodiment.
FIG. 2 is a schematic diagram and a block diagram showing a schematic configuration of a winder unit.
FIG. 3 is a left side view showing the vicinity of the traverse device of the winder unit in an enlarged manner.
FIG. 4(a) is a schematic view showing a state where the large diameter side end of the winding bobbin is in contact with the touch roller. FIG. 4B is a schematic view showing a state where the center position of the winding bobbin is in contact with the touch roller. FIG. 4C is a schematic view showing a state where the small diameter side end of the winding bobbin is in contact with the touch roller.
FIG. 5(a) is a schematic view showing a state where the large diameter side end of the winding bobbin is in contact with the touch roller. FIG. 5B is a schematic view showing a state where the small diameter side end of the winding bobbin is in contact with the touch roller.
FIG. 6 is a graph showing the change over time of the peripheral speed of the touch roller.
MODE FOR CARRYING OUT THE INVENTION
[0017]
　Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description.
[0018]
　With reference to FIG. 1, an overall configuration of an automatic winder 1 including a winder unit (thread winding machine) 10 of the present embodiment will be described. In this specification, "upstream" and "downstream" mean upstream and downstream in the traveling direction of the yarn when the yarn is wound.
[0019]
　As shown in FIG. 1, the automatic winder 1 includes a plurality of winder units 10 arranged side by side, an automatic doffing device 80, and a machine controller 90 as main components. Each winder unit 10 winds the yarn 20 unwound from the yarn supplying bobbin 21 on a winding bobbin 22 (see FIG. 2) while traversing, to form a package 30. In addition, traverse means giving reciprocating motion to the wound yarn. The package 30 is a twill winding package.
[0020]
　The automatic doffing device 80 travels to the position of the winder unit 10 when the package 30 in each winder unit 10 is fully wound (full pipe), and discharges the fully wound package 30 from the winder unit 10. At the same time, an empty bobbin is supplied to the winder unit 10.
[0021]
　The machine base control device 90 includes a setting unit (bobbin information input unit, contact state input unit) 91, a display unit 92, and a speaker 93. The setting unit 91 can perform setting for each winder unit 10 by the operator inputting a predetermined setting value or selecting an appropriate control method. The predetermined setting value input by the operator to the setting unit 91 includes bobbin information for specifying the type (shape) of the winding bobbin 22 that winds the yarn 20. The bobbin information is not limited to being specified by the operator directly inputting the type of the winding bobbin 22 to be used. For example, when the type of the winding bobbin 22 to be used is determined by the type of the wound yarn 20, the bobbin information may be specified from the type of the yarn 20 input by the operator.
[0022]
　The setting unit 91 also receives an input of the contact state of the notification target. The contact state of the notification target is input by the operator. The setting unit 91 sets the contact state of the notification target input by the operator for each winder unit 10. The contact state of the notification target will be described later. The display unit 92 is configured to be able to display the winding state of the yarn 20 of each winder unit 10, the content of the trouble that has occurred, and the like. The display unit 92 may be configured by a touch panel, and the setting unit 91 may be included in the display unit 92. The speaker 93 notifies the operator by outputting a sound based on an instruction from the notification instruction unit 55 described later.
[0023]
　Next, the configuration of the winder unit 10 will be specifically described with reference to FIG. As shown in FIG. 2, each winder unit 10 includes a winding unit main body 17 and a unit controller 50 as main components.
[0024]
　The unit controller 50 includes, for example, a CPU, a RAM, a ROM, an I/O port, and a communication port. A program for controlling each component of the winding unit body 17 is recorded in the ROM. The I/O port and the communication port are connected to respective units (details will be described later) of the winding unit body 17 and the machine base control device 90, and are configured to enable communication of control information and the like. As a result, the unit controller 50 can control the operation of each unit included in the winding unit body 17.
[0025]
　The winding unit body 17 includes a yarn unwinding assisting device 12, a tension applying device 13, and a yarn joining device in order from the yarn supplying bobbin 21 side in a yarn traveling path between the yarn supplying bobbin 21 and the touch roller 29. 14, a photoelectric constant length device (yarn speed detection unit) 15, and a yarn monitoring device 16. A yarn supplying section 11 is provided below the winding unit body 17. The yarn supplying section 11 is configured to hold the yarn supplying bobbin 21 conveyed by a bobbin conveying system (not shown) at a predetermined position.
[0026]
　The yarn unwinding assisting device 12 lowers the regulating member 40 covering the core tube of the yarn supplying bobbin 21 in unison with the unwinding of the yarn 20 from the yarn supplying bobbin 21 to remove the yarn 20 from the yarn supplying bobbin 21. Assist unwinding. The regulating member 40 contacts the balloon of the yarn 20 formed on the upper portion of the yarn supplying bobbin 21 by the rotation and centrifugal force of the yarn 20 unwound from the yarn supplying bobbin 21, and controls the balloon of the yarn 20 to an appropriate size. By doing so, the unwinding of the yarn 20 is assisted. An unillustrated sensor for detecting the chase portion of the yarn supplying bobbin 21 is provided near the regulating member 40. When this sensor detects the lowering of the chase portion, the yarn unwinding assisting device 12 follows the lowering of the chase portion and lowers the regulating member 40 by, for example, an air cylinder (not shown).
[0027]
　The tension applying device 13 applies a predetermined tension to the traveling yarn 20. As the tension applying device 13, for example, a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth can be used. The movable comb teeth are rotated by a rotary solenoid so as to be in a meshed state or a released state with respect to the fixed comb teeth. In addition to the gate type device, for example, a disc type device can be adopted as the tension applying device 13.
[0028]
　The yarn joining device 14 includes a lower yarn from the yarn supplying bobbin 21 and a package when the yarn is cut by detecting the yarn defect by the yarn monitoring device 16 or when the yarn is being unwound from the yarn supplying bobbin 21. The upper thread from 30 is spliced. As a yarn joining device that joins the upper yarn and the lower yarn, a mechanical knotter, a splicer using a fluid such as compressed air, or the like can be used.
[0029]
　The photoelectric constant length device 15 is a non-contact photoelectric constant length device and detects the yarn speed, which is the traveling speed of the yarn 20, without touching the yarn 20. Specifically, the photoelectric constant length device 15 projects the yarn 20 onto the light receiving element and processes the change in the photocurrent that occurs when the projected yarn 20 travels, by using the so-called spatial filter principle. Thus, the yarn speed of the yarn 20 wound around the winding bobbin (bobbin) 22 or the package 30 is detected.
[0030]
　The yarn monitoring device 16 includes a head 49 in which a sensor (not shown) for detecting the thickness of the yarn 20 is arranged, and an analyzer 58 which processes a yarn thickness signal from this sensor. The analyzer 58 is provided in the unit controller 50. The yarn monitoring device 16 detects a yarn defect such as a slab by monitoring the yarn thickness signal from the sensor. A cutter 39 that cuts the yarn 20 immediately when the yarn monitoring device 16 detects a yarn defect is provided near the head 49.
[0031]
　Below the yarn joining device 14, a lower thread catching member 25 that catches the yarn end of the lower yarn and guides it to the yarn joining device 14 is provided. An upper yarn catching member 26 that catches the yarn end of the upper yarn and guides it to the yarn joining device 14 is provided above the yarn joining device 14. The lower thread catching member 25 includes a lower thread pipe arm 33 and a lower thread suction port 32 formed at the tip of the lower thread pipe arm 33. The upper thread catching member 26 includes an upper thread pipe arm 36 and an upper thread suction port 35 formed at the tip of the upper thread pipe arm 36.
[0032]
　The lower thread pipe arm 33 and the upper thread pipe arm 36 are configured to be rotatable about a shaft 34 and a shaft 37, respectively. Appropriate negative pressure sources are connected to the lower thread pipe arm 33 and the upper thread pipe arm 36, respectively. The lower thread pipe arm 33 is configured to generate a suction flow at the lower thread suction port 32 so as to be able to suck and capture the thread end of the lower thread. The upper thread pipe arm 36 is configured to generate a suction flow at the upper thread suction port 35 so as to be able to suck and capture the thread end of the upper thread. The lower thread pipe arm 33 and the upper thread pipe arm 36 are provided with shutters (not shown) at their base ends. Each shutter is opened and closed according to a signal from the unit controller 50. Thereby, the stop and generation of the suction flow from the lower thread suction port 32 and the upper thread suction port 35 are controlled.
[0033]
　The winding unit main body 17 includes a cradle 23 that rotatably supports the winding bobbin 22 and a touch roller 29 that is rotatable in contact with the outer peripheral surface of the winding bobbin 22 or the outer peripheral surface of the package 30. Further equipped. The winding bobbin 22 has a cone shape (conical shape) having different diameters at both ends. The winding unit main body 17 is provided with an arm-type traverse device 70 for traversing the yarn 20 near the cradle 23. The traverse device 70 traverses the yarn 20 while winding the yarn 20 onto the bobbin 22 or the package. Roll up to 30. A guide plate 28 is provided slightly upstream of the traverse point. The guide plate 28 guides the upstream yarn 20 to the traverse location. A ceramic traverse fulcrum 27 is provided further upstream of the guide plate 28. The traverse device 70 traverses the yarn 20 in the direction indicated by the arrow in FIG. 2 with the traverse fulcrum portion 27 as a fulcrum.
[0034]
　The winding unit main body 17 allows the yarn 20 to be wound on the cone-shaped winding bobbin 22 while traversing the yarn 20 by the traverse device 70 to form the cone-shaped package 30.
[0035]
　Specifically, the traverse device 70 includes a traverse drive motor 76, an output shaft 77, and a traverse arm 74, as shown in FIGS. 2 and 3. Note that FIG. 3 is a diagram as viewed in the axial direction of the touch roller 29. The rotation of the package 30 in the winding direction is clockwise in FIG. 3, and the rotation of the package 30 in the counter winding direction is counterclockwise in FIG.
[0036]
　The traverse drive motor 76 is a motor that drives the traverse arm 74, and is configured by a servo motor or the like. The operation of the traverse drive motor 76 is controlled by the unit controller 50. The traverse drive motor 76 may be another motor such as a step motor or a voice coil motor. At the tip of the traverse arm 74, for example, a hook-shaped thread guide portion 73 on which the thread 20 is hooked is formed. The traverse arm 74 can guide the yarn 20 by the yarn guide portion 73. The traverse device 70 can traverse the yarn 20 wound around the package 30 by reciprocally rotating the traverse arm 74 (moving the yarn guide portion 73) while the yarn guide portion 73 guides the yarn 20. it can.
[0037]
　The power of the traverse drive motor 76 is transmitted to the base end of the traverse arm 74 via the output shaft 77. When the rotor of the traverse drive motor 76 rotates forward and backward, the traverse arm 74 makes a reciprocating swivel motion in the direction perpendicular to the paper surface of FIG. 3 (the left-right direction of FIG. 2 (the winding width direction of the package 30)). The traverse arm 74 in FIG. 3 shows the position at the end of the traverse.
[0038]
　The touch roller 29 comes into contact with the outer peripheral surface of the winding bobbin 22 or the package 30 and is driven to rotate as the winding bobbin 22 or the package 30 rotates. The touch roller 29 has a cylindrical shape with the same diameter at both ends. The outer peripheral surface of the package 30 is pressed against the touch roller 29. The touch roller 29 has a function of adjusting the shape of the package 30. Further, the touch roller 29 has a function of holding the traversed yarn 20 at the traversed position and winding it around the package 30. The touch roller 29 is provided with a rotation speed sensor 31 that detects the rotation speed of the touch roller 29. The rotation speed sensor 31 transmits a rotation detection signal corresponding to the rotation speed of the touch roller 29 to the unit controller 50. As the rotation speed sensor 31, various sensors such as a sensor that measures a change in magnetism of a magnet attached to the touch roller 29 can be used.
[0039]
　The cradle 23 has a pair of first cradle arm 23a and second cradle arm 23b, and a connecting portion 23c that connects the base end of the first cradle arm 23a and the base end of the second cradle arm 23b. ing. The cradle 23 is configured to be rotatable around a rotation shaft 48 provided on the connecting portion 23c. The cradle 23 absorbs an increase in the diameter of the package 30 caused by winding the yarn 20 around the winding bobbin 22 by rotating the cradle 23.
[0040]
　A first bobbin holding portion (bobbin holding portion) B1 that holds one end portion of the winding bobbin 22 is provided at a tip end portion of the first cradle arm 23a. A second bobbin holding portion B2 that holds the other end of the winding bobbin 22 is provided at the tip of the second cradle arm 23b. A package drive motor (drive unit) 41 including a servo motor is attached to the tip of the first cradle arm 23a. The package drive motor 41 rotationally drives the winding bobbin 22 held by the first bobbin holding portion B1 and the second bobbin holding portion B2 in order to wind the yarn 20 around the winding bobbin 22. The package drive motor 41 rotates in the normal direction to rotate the package 30 (the winding bobbin 22) in the winding direction and rotates in the reverse direction to rotate the package 30 in the opposite winding direction opposite to the winding direction. Can be rotationally driven. The motor shaft (rotation shaft) of the package drive motor 41 is integrally rotatably connected to the first bobbin holding portion B1 that holds the winding bobbin 22. The package drive motor 41 rotates the winding bobbin 22 by rotating the first bobbin holding portion B1 (so-called direct drive system).
[0041]
　The operation of the package drive motor 41 is controlled by the unit controller 50. The package drive motor 41 is not limited to a servo motor, and various motors such as a step motor and an induction motor can be adopted. The package drive motor 41 is provided with a rotation speed sensor 24 that detects the rotation speed of the motor shaft of the package drive motor 41. The rotation speed sensor 24 transmits a rotation detection signal corresponding to the rotation speed of the motor shaft to the unit controller 50.
[0042]
　In addition to the analyzer 58 described above, the unit controller 50 includes the package peripheral speed acquisition unit 51, the roller peripheral speed calculation unit 52, the contact state determination unit 53, the notification determination unit 54, the notification instruction unit 55, the storage unit (the peripheral speed information. A storage unit, a contact state storage unit) 56, and a package drive control unit 57 are further provided.
[0043]
　The package peripheral speed acquisition unit 51 acquires the peripheral speed (first peripheral speed) of the outer peripheral surface of the winding bobbin 22 at a predetermined position in the rotation axis direction of the winding bobbin 22 at the start of winding the yarn 20. To do. When the winding of the yarn 20 is started, the yarn 20 is not accumulated between the winding bobbin 22 and the touch roller 29, and the outer peripheral surface of the winding bobbin 22 is in contact with the touch roller 29. is there. When the package drive motor 41 is attached to the cradle 23, a small gap (predetermined space) is provided between the outer peripheral surface of the winding bobbin 22 and the outer peripheral surface of the touch roller 29 at the start of winding the yarn 20. A gap) may be provided.
[0044]
　After the winding of the yarn 20 is started, the package peripheral speed acquisition unit 51 acquires the peripheral speed (first peripheral speed) of the outer peripheral surface of the package 30 at a predetermined position in the rotation axis direction of the package 30. After the start of winding the yarn 20, the yarn 20 is wound around the winding bobbin 22, and the yarn 20 wound around the winding bobbin 22 is in contact with the touch roller 29, that is, the package 30. Is in contact with the touch roller 29.
[0045]
　In the present embodiment, the package peripheral speed acquisition unit 51 acquires the peripheral speed of the outer peripheral surface of the winding bobbin 22 and the package 30 at the center position in the rotational axis direction as the peripheral speed at a predetermined position in the rotational axis direction. To do. The package peripheral speed acquisition unit 51 can acquire the peripheral speeds of the outer peripheral surfaces of the winding bobbin 22 and the package 30 at central positions in the rotation axis direction based on known methods.
[0046]
　For example, the package peripheral speed acquisition unit 51 derives the peripheral speed of the outer peripheral surface of the winding bobbin 22 or the package 30 at a predetermined position by calculation based on the peripheral speed calculation information for calculating the peripheral speed. May be. This peripheral speed calculation information includes, for example, at least one of the shape of the winding bobbin 22, the rotation speed of the winding bobbin 22, and the yarn speed of the yarn 20 to be wound. The shape of the winding bobbin 22 includes, for example, the diameter of the large-diameter side end of the winding bobbin 22, the length in the rotation axis direction, the angle of inclination of the outer peripheral surface with respect to the rotation axis, and the like. May be. The shape of the winding bobbin 22 may include, for example, the diameter of the winding bobbin 22 at the center position in the rotation axis direction. The shape of the winding bobbin 22 is stored in the storage unit 56 in advance for each type of the winding bobbin 22. The package peripheral speed acquisition unit 51 can specify the type of the winding bobbin 22 used based on the bobbin information input to the setting unit 91. The package peripheral speed acquisition unit 51 can acquire the shape of the winding bobbin 22 according to the specified type from the storage unit 56. As the rotation speed of the winding bobbin 22, the detection result of the rotation speed sensor 24 can be used. The detection result of the photoelectric constant length device 15 can be used as the yarn speed of the wound yarn.
[0047]
　As an example, the package peripheral speed acquisition unit 51, based on the shape of the winding bobbin 22 and the rotation speed detected by the rotation speed sensor 24 at the start of winding the yarn, the rotation axis of the winding bobbin 22. The peripheral speed of the outer peripheral surface at the center position in the direction can be calculated. Specifically, the package peripheral speed acquisition unit 51 determines the diameter of the winding bobbin 22 at the center position in the rotation axis direction, which is obtained based on the shape of the winding bobbin 22, and the rotation speed detected by the rotation speed sensor 24. Based on this, it is possible to calculate the peripheral speed of the outer peripheral surface of the winding bobbin 22 at the central position in the rotation axis direction.
[0048]
　As an example, the package peripheral speed acquisition unit 51, after the start of winding the yarn, based on the yarn speed detected by the photoelectric constant length device 15 and the rotation speed detected by the rotation speed sensor 24, the package 30. The diameter at the center position in the rotation axis direction is calculated. Then, the package peripheral speed acquisition unit 51 may calculate the peripheral speed of the outer peripheral surface at the central position of the package 30, based on the calculated diameter of the package 30. As another example, the package peripheral speed acquisition unit 51 sets the yarn speed of the yarn 20 detected by the photoelectric constant length device 15 after the start of winding the yarn to the outer periphery at the center position in the rotation axis direction of the package 30. It may be used as the peripheral speed of the surface. In this embodiment, the package 30 is a cone type, and the average yarn speed of the yarn 20 traversed by the traverse device 70 is detected by the photoelectric constant length device 15. Therefore, the yarn speed of the yarn 20 detected by the photoelectric constant length device 15 becomes the peripheral velocity of the outer peripheral surface of the package 30 at the center position in the rotation axis direction.
[0049]
　The package peripheral speed acquisition unit 51 may acquire the peripheral speed of the outer peripheral surface of the winding bobbin 22 at a predetermined position without performing the calculation using the peripheral speed calculation information. Here, the storage unit 56 stores, for each shape of the winding bobbin 22, peripheral speed information in which the shape of the winding bobbin 22 is associated with the peripheral speed of the outer peripheral surface of the winding bobbin 22 at a predetermined position. You may remember. In this case, the package peripheral speed acquisition unit 51 can acquire the peripheral speed corresponding to the shape of the bobbin specified by the bobbin information input to the setting unit 91 from the storage unit 56.
[0050]
　Hereinafter, the peripheral speed of the outer peripheral surface of the winding bobbin 22 at the central position in the rotational axis direction and the peripheral speed of the outer peripheral surface of the package 30 at the central position in the rotational axis direction will be collectively referred to as the “package central diameter peripheral speed (first Peripheral speed)”.
[0051]
　The package drive control unit 57 controls the rotation speed of the package drive motor 41 so that the yarn speed of the yarn 20 wound by the winding bobbin 22 or the package 30 becomes a predetermined yarn speed. For example, the package drive control unit 57 calculates the rotation speed of the package drive motor 41 for realizing a predetermined yarn speed based on the diameter of the winding bobbin 22 or the package 30 at the center position in the rotation axis direction. be able to. The package drive control unit 57 can calculate the diameter of the winding bobbin 22 or the package 30 at the central position in the rotation axis direction based on a known method.
[0052]
　As an example, at the start of winding the yarn 20, the package drive control unit 57 sets the winding bobbin 22 preset in the package peripheral speed acquisition unit 51 as the diameter at the center position of the winding bobbin 22 in the rotation axis direction. It may be calculated based on the information specifying the shape. As an example, the package drive control unit 57 controls the package 30 based on the yarn speed detected by the photoelectric constant length device 15 and the rotation speed detected by the rotation speed sensor 24 after the winding of the yarn 20 is started. The diameter may be calculated. When the diameter of the package 30 is calculated using the yarn speed detected by the photoelectric constant length device 15, the package drive control unit 57 adjusts the rotation speed of the package drive motor 41 based on the actual yarn speed of the yarn 20. Control (that is, feedback control) can be performed.
[0053]
　The roller peripheral speed calculator 52 calculates the peripheral speed (second peripheral speed) of the outer peripheral surface of the touch roller 29. As an example, the roller peripheral speed calculation unit 52 calculates the peripheral speed of the outer peripheral surface of the roller peripheral speed calculation unit 52 based on the diameter of the touch roller 29 and the rotation speed detected by the rotation speed sensor 31. can do. The diameter of the touch roller 29 is set in advance in the roller peripheral speed calculator 52. Hereinafter, the peripheral speed of the outer peripheral surface of the touch roller 29 is referred to as “touch roller peripheral speed (second peripheral speed)”.
[0054]
　The contact state determination unit 53 determines that the touch roller 29 has a contact point by comparing the package center diameter peripheral speed acquired by the package peripheral speed acquisition unit 51 with the touch roller peripheral speed calculated by the roller peripheral speed calculation unit 52. The contact state of the winding bobbin 22 or the package 30 that contacts is determined. Here, the contact state determination unit 53 determines that the winding bobbin 22 or the package 30 is in contact with the touch roller 29 at the large diameter side end or the small diameter side end is in contact with the touch roller 29. It is determined whether or not the center position between the large diameter side end and the small diameter side end is in contact with the touch roller 29.
[0055]
　Here, when the rotating winding bobbin 22 or the package 30 is in contact with the touch roller 29, and when the outer peripheral surface of the large diameter side end of the winding bobbin 22 or the package 30 is in contact with the touch roller 29. The peripheral speed of the touch roller is different from when the outer peripheral surface of the winding bobbin 22 or the small-diameter side end of the package 30 is in contact with the touch roller 29. As described above, even if the rotation speed of the winding bobbin 22 or the package 30 is constant, the peripheral speed of the touch roller changes depending on the contact portion of the winding bobbin 22 or the package 30 contacting the touch roller 29. Therefore, the contact state determination unit 53 compares the package center diameter peripheral speed with the touch roller peripheral speed to determine which part of the winding bobbin 22 or the touch roller 29 is in contact with the touch roller, that is, The contact state of the winding bobbin 22 or the package 30 can be determined.
[0056]
　Specifically, when the touch roller peripheral speed and the package center diameter peripheral speed satisfy the following expression (1) at the start of winding the yarn 20, the contact state determination unit 53 displays the result in FIG. As shown, it is determined that the large diameter side end 22a of the winding bobbin 22 is in contact with the touch roller 29. Similarly, when the touch roller peripheral speed and the package center diameter peripheral speed satisfy the following formula (1) after the winding of the yarn 20 is started, the contact state determination unit 53 determines the large diameter side end of the package 30. Is determined to be in contact with the touch roller 29.
　Touch roller peripheral speed/Package center diameter peripheral speed>1 (1)
[0057]
　When the contact roller peripheral speed and the package center diameter peripheral speed satisfy the following expression (2) at the start of winding the yarn 20, the contact state determination unit 53, as shown in FIG. It is determined that the outer peripheral surface of the winding bobbin 22 at the central position in the rotation axis direction is in contact with the touch roller 29. Similarly, when the touch roller peripheral speed and the package center diameter peripheral speed satisfy the following expression (2) after the winding of the yarn 20 is started, the contact state determination unit 53 determines the center of the package 30 in the rotation axis direction. It is determined that the outer peripheral surface at the position is in contact with the touch roller 29.
　Touch roller peripheral speed/package center diameter peripheral speed=1 (2)
[0058]
　When the contact roller peripheral speed and the package center diameter peripheral speed satisfy the following expression (3) at the start of winding the yarn 20, the contact state determination unit 53, as shown in FIG. It is determined that the small diameter side end portion 22b of the winding bobbin 22 is in contact with the touch roller 29. Similarly, when the touch roller peripheral speed and the package center diameter peripheral speed satisfy the following expression (3) after the start of winding the yarn 20, the contact state determination unit 53 determines that the small diameter side end of the package 30 is It is determined that the touch roller 29 is in contact with the touch roller 29.
　Touch roller peripheral speed/Package center diameter peripheral speed <1... (3)
[0059]
　The contact state determination unit 53 is further based on the temporal change of the difference between the yarn speed of the yarn 20 detected by the photoelectric constant length device 15 and the touch roller peripheral speed calculated by the roller peripheral speed calculation unit 52. , Determine the contact state. Here, the contact state determination part 53 contacts whether the gap between the small diameter side end and the touch roller 29 is wide or narrow while the large diameter side end of the package 30 is in contact with the touch roller 29. Judge as the state. Similarly, the contact state determination unit 53 contacts whether the gap between the large diameter side end portion and the touch roller 29 is wide or narrow while the small diameter side end portion of the package 30 is in contact with the touch roller 29. Judge as the state.
[0060]
　Here, for example, as shown in FIG. 5, when the large-diameter side end portion 22a of the winding bobbin 22 is in contact with the touch roller 29, the winding bobbin 22 and the touch roller 29 are wound as the yarn 20 is wound. The layer of yarn 20 (the amount of yarn) between and increases. Since the winding bobbin 22 and the package 30 are cone-shaped and the peripheral speeds on the large diameter side and the small diameter side are different, the outer peripheral surface of the package 30 and the outer peripheral surface of the touch roller 29 are in contact with each other at one point (contact point). Then, as the number of layers of the yarn 20 increases, the contact point between the outer peripheral surface of the package 30 and the touch roller 29 moves toward the center position (center position in the rotation axis direction) of the outer peripheral surface of the package 30. The moving speed of the contact point changes depending on the speed at which the gap between the winding bobbin 22 and the touch roller 29 is filled with the yarn.
[0061]
　That is, for example, the large diameter side end 22a of the winding bobbin 22 is in contact with the touch roller 29. In this state, when the gap between the take-up bobbin 22 and the touch roller 29 is wide (when the space between the small diameter side end 22b of the take-up bobbin 22 and the outer peripheral surface of the touch roller 29 is wide), the take-up bobbin 22 is The movement of the contact point is slower than when the gap with the touch roller 29 is narrow (when the gap between the small diameter side end 22b and the outer peripheral surface of the touch roller 29 is narrow). Specifically, when the gap between the take-up bobbin 22 and the touch roller 29 is wide as shown in FIG. 5A, the take-up bobbin 22 and the touch roller 29 are separated from each other as shown in FIG. 4A. As compared with the case where the gap is narrow, the gap is slowly filled with the yarn 20, so that the contact point moves slowly.
[0062]
　Similarly, the small diameter side end portion 22b of the winding bobbin 22 is in contact with the touch roller 29. In this state, when the gap between the take-up bobbin 22 and the touch roller 29 is wide (when the large-diameter side end 22a of the take-up bobbin 22 and the outer peripheral surface of the touch roller 29 are wide), the take-up bobbin 22 The contact point moves more slowly than when the gap between the touch roller 29 and the touch roller 29 is narrow (when the distance between the large-diameter side end 22a and the outer peripheral surface of the touch roller 29 is narrow). Specifically, when the gap between the winding bobbin 22 and the touch roller 29 is wide as shown in FIG. 5B, the winding bobbin 22 and the touch roller 29 are separated from each other as shown in FIG. 4C. Since the gap 20 is filled with the yarn 20 at a slower speed than when the gap is narrow, the contact point moves slowly.
[0063]
　Further, since the yarn 20 is wound while being traversed between the large-diameter side end and the small-diameter side end of the package 30, the package center diameter peripheral speed is the yarn speed of the yarn 20 (average of the yarn 20). Traveling speed). Therefore, when the contact point moves to the vicinity of the center position on the outer peripheral surface of the package 30, the peripheral speed of the touch roller becomes substantially the same as the peripheral speed of the central diameter of the package. That is, the peripheral speed of the touch roller becomes substantially the same as the yarn speed of the yarn 20. The peripheral speed of the touch roller and the peripheral speed of the central diameter of the package are not exactly the same due to slippage between the package 30 and the touch roller 29.
[0064]
　Thus, as the yarn 20 is wound around the winding bobbin 22, the peripheral speed of the touch roller converges to the yarn speed of the yarn 20. Further, the speed at which the peripheral speed of the touch roller converges to the yarn speed of the yarn 20 is the size of the gap between the take-up bobbin 22 and the touch roller 29, that is, the take-up bobbin 22 ( It changes depending on the state of inclination of the rotation axis of the package 30).
[0065]
　Here, FIG. 6 shows a change in the peripheral speed of the touch roller when the yarn 20 is wound in the state shown in FIGS. 4(a), 4(c), 5(a) and 5(b). .. A curve L1 shown in FIG. 6 shows a change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 5(a). A curve L2 shown in FIG. 6 shows a change in peripheral speed when the yarn 20 is wound in the state shown in FIG. A curve S1 shown in FIG. 6 shows a change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 5(b). A curve S2 shown in FIG. 6 shows a change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 4(c).
[0066]
　Thus, for example, even if the large-diameter side end of the package 30 is in contact with the touch roller 29, the curves L1 and L2 in FIG. 6 are changed depending on the inclination state of the winding bobbin 22 (package 30) with respect to the touch roller 29. As indicated by, the time required for the peripheral speed of the touch roller to converge to the yarn speed of the yarn differs. Similarly, even if the small-diameter side end of the package 30 is in contact with the touch roller 29, depending on the state of inclination of the winding bobbin 22 (package 30) with respect to the touch roller 29, as shown by curves S1 and S2 in FIG. In addition, the time required for the peripheral speed of the touch roller to converge to the yarn speed of the yarn differs.
[0067]
　Therefore, the contact state determination unit 53 determines whether the touch roller peripheral speed converges with respect to the yarn speed of the yarn 20 after a lapse of a predetermined time after the winding of the yarn 20 is started. The inclination state of the winding bobbin 22 (package 30) with respect to 29, that is, the contact state can be determined. The contact state determination unit 53 determines whether the package 30 has a large size based on whether the peripheral speed of the touch roller after a predetermined time has elapsed from the start of winding the yarn 20 is faster or slower than the yarn speed of the yarn 20. It is also possible to determine which of the diameter side end and the small diameter side end is in contact with the touch roller 29. That is, the contact state determination unit 53 determines that the large diameter end of the package 30 is in contact when the peripheral speed of the touch roller is faster than the yarn speed of the yarn 20. When the peripheral speed of the touch roller is slower than the yarn speed of the yarn 20, the contact state determining unit 53 determines that the small diameter side end of the package 30 is in contact.
[0068]
　As described above, the contact state determination unit 53 compares the peripheral velocity of the touch roller with the peripheral velocity of the center of the package to determine the large-diameter side end, the small-diameter side end, and the center of the winding bobbin 22 or the package 30. Which of the positions is in contact with the touch roller 29 is determined as the contact state. The contact state determination unit 53 can perform this determination both at the start of winding the yarn 20 and after the start of winding. Further, the contact state determination unit 53 contacts the tilted state of the winding bobbin 22 (package 30) with respect to the touch roller 29 based on the temporal change in the difference between the yarn speed of the yarn 20 and the peripheral speed of the touch roller. Judge as the state. The contact state determination unit 53 can make this determination after a lapse of a predetermined time from the start of winding the yarn 20.
[0069]
　The notification determination unit 54 determines whether or not the contact state determined by the contact state determination unit 53 is a predetermined notification target contact state. The notification determination unit 54 uses the contact state of the notification target set by the setting unit 91 as the predetermined contact state of the notification target. The contact state of the notification target means which one of the large diameter side end, the small diameter side end, and the central position of the winding bobbin 22 or the package 30 is in contact with the touch roller 29, and the winding state with respect to the touch roller 29. At least one of the inclined states of the bobbin 22 (package 30) is included.
[0070]
　In the present embodiment, as an example of the contact state of the notification target, the state in which the small diameter side end of the winding bobbin 22 or the package 30 is in contact with the touch roller 29 and the central position of the winding bobbin 22 or the package 30 are: The state of being in contact with the touch roller 29 is set. Further, as an example of the contact state of the notification target, the large diameter side end of the package 30 contacts the touch roller 29, and the gap between the small diameter side end of the package 30 and the outer peripheral surface of the touch roller 29 is a predetermined value or more. The tilted state of the package 30 is set.
[0071]
　When the notification determination unit 54 determines that the contact state of the winding bobbin 22 or the package 30 is the contact state of the notification target, the notification instruction unit 55 operates the speaker 93 to perform the notification. As described above, the notification instruction unit 55 and the speaker 93 function as a notification unit that gives a notification when the notification determination unit 54 determines that the contact state of the notification target.
[0072]
　The storage unit 56 stores the identification information for identifying the package 30 and the contact state determined by the contact state determination unit 53 for the package 30 in association with each other. The storage unit 56 can use, as the identification information of the package 30, identification information provided by a known method such as identification information provided by the unit control unit 50 for managing each package 30. As described above, the storage unit 56 stores the shape of the winding bobbin 22 in advance for each type of the winding bobbin 22. Further, as described above, the storage unit 56 stores the peripheral speed information in which the shape of the winding bobbin 22 and the peripheral speed of the outer peripheral surface of the winding bobbin 22 at the predetermined position are associated with each other. May be stored for each shape.
[0073]
　The unit controller 50 controls the operation of the traverse drive motor 76 in addition to the above-described determination of the contact state and the like. Further, the unit controller 50 controls the catching operation of the lower thread catching member 25 and the upper thread catching member 26 (rotation of the lower thread pipe arm 33 and the upper thread pipe arm 36). The unit controller 50 controls opening/closing of shutters provided on the lower thread pipe arm 33 and the upper thread pipe arm 36, and controls stop and generation of suction flow from the lower thread suction port 32 and the upper thread suction port 35. ..
[0074]
　As described above, in the winder unit 10 of the present embodiment, the contact state determination unit 53 compares the package center diameter peripheral speed with the touch roller peripheral speed to determine which part of the winding bobbin 22 or the package 30 is the touch roller 29. The contact state of the winding bobbin 22 or the package 30 can be determined. In this way, the winder unit 10 can determine the contact state of the winding bobbin 22 or the package 30 that contacts the touch roller 29.
[0075]
　The package peripheral speed acquisition unit 51 can derive the peripheral speed of the outer peripheral surface of the winding bobbin 22 or the package 30 at a predetermined position based on the peripheral speed calculation information for calculating the peripheral speed. it can. In this case, the package peripheral speed acquisition unit 51 can acquire the peripheral speed of the outer peripheral surface of the winding bobbin 22 or the package 30 at a predetermined position by calculation.
[0076]
　The peripheral speed calculation information may include at least one of the shape of the winding bobbin 22, the rotation speed of the winding bobbin 22, and the yarn speed of the yarn 20 to be wound. In this case, the package peripheral speed acquisition unit 51 can accurately calculate the peripheral speed using these values.
[0077]
　The package peripheral speed acquisition unit 51 may acquire, from the storage unit 56, the peripheral speed corresponding to the shape of the bobbin specified by the bobbin information input to the setting unit 91. In this case, the package peripheral speed acquisition unit 51 can acquire the peripheral speed from the storage unit 56 without performing calculation.
[0078]
　When the notification determination unit 54 determines that the notification target is in the contact state, the notification instruction unit 55 outputs a sound from the speaker 93 to perform the notification. In this case, the operator of the winder unit 10 can grasp the contact state of the winding bobbin 22 or the package 30 based on the sound output from the speaker 93. Then, the operator can take measures such as adjusting the contact state of the winding bobbin 22 or the package 30, or stopping the winding of the yarn 20.
[0079]
　The winder unit 10 includes a setting unit 91 for inputting the contact state of the notification target. In this case, the operator of the winder unit 10 can set the contact state of the notification target using the setting unit 91. Further, the operator of the winder unit 10 can switch the contact state of the notification target according to the type of the yarn 20 to be wound and the like.
[0080]
　Depending on the state of inclination of the winding bobbin 22 with respect to the touch roller 29, the moving speed of the contact point that moves toward the center position of the outer peripheral surface of the package 30 changes. That is, the speed at which the peripheral speed of the touch roller converges to the yarn speed of the yarn 20 is different. Therefore, the contact state determination unit 53 determines the state of inclination of the winding bobbin 22 with respect to the touch roller 29, that is, the package 30 with respect to the touch roller 29, based on the temporal change in the difference between the yarn speed and the peripheral speed of the touch roller. The contact state can be determined.
[0081]
　The storage unit 56 stores the identification information of the package 30 and the contact state determined by the contact state determination unit 53 for the package 30 in association with each other. In this case, the operator or the like of the winder unit 10 can confirm the contact state when the yarn 20 is wound around the package 30 based on the information stored in the storage unit 56 even after the package 30 is formed.
[0082]
　Although the embodiment and the modified example of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiment and the modified example. The present disclosure may be modified without changing the scope of the claims. Moreover, you may combine the said embodiment and the said modified example suitably.
[0083]
　For example, the rotation axis of the winding bobbin 22 may deviate from the central axis defined by the outer peripheral surface of the winding bobbin 22 due to distortion of the winding bobbin 22 or the like. In this case, the outer peripheral surface of the take-up bobbin 22 comes into contact with the outer peripheral surface of the touch roller 29 intermittently, and the peripheral speed of the touch roller 29 does not increase. Therefore, the contact state determination unit 53 may determine that the winding bobbin 22 is distorted when the touch roller peripheral speed does not reach the predetermined value or more even after the predetermined time has elapsed.
[0084]
　The traverse device 70 is not limited to the configuration in which the yarn 20 is traversed by reciprocating the traverse arm 74. For example, the traverse device 70 may be configured to traverse the yarn 20 by causing the yarn guide portion 73 to reciprocate by driving the belt.
[0085]
　When the notification determining unit 54 determines that the notification target is in the contact state, the package drive control unit 57 may stop winding the yarn 20. The notification instruction unit 55 may perform the notification by changing the display mode of the display unit 92 in addition to or instead of the speaker 93.
[0086]
　The cradle 23 may be provided with a mechanism for changing the angle of the winding bobbin 22 so that the winding bobbin 22 is brought into a predetermined contact state based on the contact state determined by the contact state determination unit 53. ..
[0087]
　Note that the winder unit 10 does not have to make the notification based on the determination result of the contact state. The winder unit 10 may only determine the contact state, or may store the determined contact state and the identification information of the package 30 in association with each other. The contact state of the notification target used by the notification determination unit 54 in the determination need not be changeable by the setting unit 91. In this case, the notification determination unit 54 may use a preset contact state as the contact state of the notification target. The contact state determination unit 53 does not have to determine the contact state based on the temporal change in the difference between the yarn speed of the yarn 20 and the peripheral speed of the touch roller. The winder unit 10 may not include the storage unit 56 that stores the identification information of the package 30 and the contact state in association with each other.
[0088]
　The package peripheral speed acquisition unit 51 respectively acquires the peripheral speed of the outer peripheral surface at the central position in the rotational axis direction as the peripheral speed at the predetermined position in the rotational axis direction of the winding bobbin 22 and the package 30. Without being limited to this, the package peripheral speed acquisition unit 51 determines the peripheral speed between the large diameter side end portion and the small diameter side end portion as the peripheral speed at a predetermined position in the rotation axis direction of the winding bobbin 22 and the package 30. The peripheral speed (first peripheral speed) of the outer peripheral surface at a predetermined position may be acquired.
Explanation of symbols
[0089]
　DESCRIPTION OF SYMBOLS 10... Winder unit (yarn winding machine), 15... Photoelectric constant length device (yarn speed detection part), 20... Thread, 22... Winding bobbin (bobbin), 29... Touch roller, 30... Package, 41... Package drive Motor (drive unit), 51... Package peripheral speed acquisition unit, 52... Roller peripheral speed calculation unit, 53... Contact state determination unit, 54... Notification determination unit, 55... Notification instruction unit (notification unit), 56... Storage unit (Peripheral speed information storage unit, contact state storage unit), 70... traverse device, 73... thread guide unit, 91... setting unit (bobbin information input unit, contact state input unit), 93... speaker (notification unit), B1... 1st bobbin holding part (bobbin holding part).
The scope of the claims
[Claim 1]
　A yarn winding machine that forms a cone-shaped package by winding a yarn on a cone-shaped
　bobbin, and a cradle that rotatably supports the bobbin by a bobbin holding section that holds the bobbin, and
　is attached to the cradle.
　By moving a drive unit that rotates the bobbin by rotating the bobbin holding unit having a rotation shaft that is integrally rotatably connected to the bobbin holding unit and a yarn guide unit on which the yarn is hooked, A traverse device that traverses the yarn wound around the bobbin or the package, and
　a package that acquires the peripheral speed of the outer peripheral surface of the bobbin or the package at a predetermined position in the rotation axis direction of the bobbin as the first peripheral speed. A peripheral speed acquisition unit,
　a touch roller that comes into contact with the outer peripheral surface of the bobbin or the package, and rotates following the rotation of the bobbin or the package, and
　a peripheral speed of the outer peripheral surface of the touch roller as the second peripheral speed. The
　touch roller is calculated by comparing the calculated roller peripheral speed calculation unit with the first peripheral speed acquired by the package peripheral speed acquisition unit and the second peripheral speed calculated by the roller peripheral speed calculation unit. And a contact state determination unit that determines a contact state of the bobbin or the package that contacts the bobbin.
[Claim 2]
　The package peripheral speed acquisition unit, based on peripheral speed calculation information for calculating the peripheral speed, the first peripheral speed, which is the peripheral speed of the outer peripheral surface of the bobbin or the package at the predetermined position. The yarn winding machine according to claim 1, which is derived by calculation.
[Claim 3]
　The yarn winding machine according to claim 2, wherein the peripheral speed calculation information includes at least one of a shape of the bobbin, a rotation speed of the bobbin, and a yarn speed of the yarn to be wound.
[Claim 4]
　A bobbin information input unit for inputting bobbin information that specifies the shape of the
　bobbin, peripheral speed information in which the peripheral speed of the outer peripheral surface of the bobbin at the predetermined position and the bobbin shape are associated, And a peripheral speed information storage unit for storing each bobbin shape,
　wherein the package peripheral speed acquisition unit is specified by the bobbin information input from the peripheral speed information storage unit to the bobbin information input unit. The yarn winding machine according to claim 1, wherein the peripheral speed corresponding to the shape of the bobbin is acquired as the first peripheral speed.
[Claim 5]
　A notification determination unit that determines whether or not the contact state determined by the contact state determination unit is a predetermined notification target contact state, and the
　notification determination unit determines the notification target contact state. The yarn winding machine according to any one of claims 1 to 4, further comprising: a notifying unit that gives a notification when it is determined to be.
[Claim 6]
　The
　notification determination unit further includes a contact state input unit for inputting the contact state of the notification target, and the notification determination unit determines the notification state input by the contact state input unit as the predetermined contact state of the notification target. The yarn winding machine according to claim 5, wherein a target contact state is used.
[Claim 7]
　The bobbin or the package further includes a yarn speed detection unit that detects a yarn speed of the yarn wound up, and
　the contact state determination unit further includes the yarn speed detected by the yarn speed detection unit and the roller. The yarn winding machine according to any one of claims 1 to 6, wherein the contact state is determined based on a temporal change in a difference from the second peripheral speed calculated by the peripheral speed calculating unit.
[Claim 8]
　8. The contact state storage unit for storing the identification information for identifying the package and the contact state determined by the contact state determination unit for the package in association with each other. The yarn winding machine according to item.