JP2021138509A - Yarn winding machine, contact determination method, and contact determination program - Google Patents

Abstract

To provide a yarn winding machine capable of determining that a package has abutted a touch roller.SOLUTION: A winder unit 10 forms a cone type package 30 by winding a yarn 20 on a cone type winding bobbin 22. The winder unit 10 comprises: a cradle 23 for supporting the bobbin 22 by a first bobbin-holding part B1; a package driving motor 41 for rotating the winding bobbin 22 by rotating the first bobbin-holding part B1; a touch roller 29 which is rotated in a driven manner by being brought into contact with an outer peripheral surface of the package 30; a package peripheral-speed acquisition part 51 for acquiring a large diameter side package peripheral-speed and a small diameter side package peripheral-speed of the package 30; a touch roller peripheral-speed acquisition part 52 for acquiring a touch roller peripheral-speed; and a touch determination part 53 for determining that the package 30 has abutted the touch roller 29 when the touch roller peripheral-speed is equal to or more than the small diameter side package peripheral-speed and equal to or less than the large diameter side package peripheral-speed.SELECTED DRAWING: Figure 2

Description

The present invention relates to a bobbin winder, a contact determination method, and a contact determination program.

For example, Patent Document 1 describes a thread winder that winds a thread on a bobbin to form a package. In this thread winder, the shape of the package is adjusted by pressing the outer peripheral surface of the package against the touch roller. Further, in such a thread winder, the bobbin is installed so that a slight gap is provided between the outer peripheral surface of the bobbin and the outer peripheral surface of the touch roller at the start of winding the thread, and the thread is wound around the bobbin. As the package is formed, the outer peripheral surface of the package is brought into contact with the outer peripheral surface of the touch roller.

JP-A-2019-59601

For example, in the thread winder described in Patent Document 1, the contact posture of the package that contacts the touch roller is determined. In order to determine the contact posture of this package, it is necessary for the spooling machine to determine that the package is in contact with the touch roller. Therefore, an object of the present invention is to provide a thread winder capable of determining that a package has come into contact with a touch roller, a contact determination method, and an contact determination program.

The present invention is a thread winder that winds a thread around a cone-shaped bobbin to form a cone-shaped package, and is attached to a cradle that rotatably supports the bobbin by a bobbin holding portion that holds the bobbin and a cradle. , A drive unit that has a rotation shaft that is non-rotatably connected to the bobbin holding unit and rotates the bobbin by rotating the bobbin holding unit, and a drive unit that abuts on the outer peripheral surface of the package to accompany the rotation of the package. A touch roller that rotates drivenly, a large-diameter package peripheral speed that is the peripheral speed at the large-diameter side end of the outer peripheral surface of the package, and a small-diameter side package peripheral speed that is the peripheral speed at the small-diameter side end of the outer peripheral surface of the package. The package peripheral speed acquisition unit to acquire, the touch roller peripheral speed acquisition unit that acquires the touch roller peripheral speed which is the peripheral speed of the outer peripheral surface of the touch roller, and the touch roller peripheral speed of the small diameter side package peripheral speed or more and the large diameter side package peripheral speed. It is provided with a touch determination unit for determining that the package has come into contact with the touch roller when the speed is lower than the speed.

In this thread winder, when the package comes into contact with the touch roller, the touch roller is driven to rotate due to the rotation of the package, so that the peripheral speed of the touch roller is the same as the peripheral speed of the package. Here, the bobbin winder forms a cone-shaped package. The outer peripheral surface of the package and the outer peripheral surface of the touch roller come into contact with each other at one point. Hereinafter, the point where the package and the touch roller come into contact with each other is referred to as a drive point. This drive point is located either between the position of the large diameter side end of the outer peripheral surface of the package and the position of the small diameter side end of the outer peripheral surface of the package. When the rotating cone-shaped package is in contact with the touch roller, the drive point is located at the large diameter side end of the outer peripheral surface of the package, and the drive point is located at the small diameter side end of the outer peripheral surface of the package. The peripheral speed of the touch roller is different from when it is positioned. In this way, even if the rotation speed of the package is constant, the peripheral speed of the touch roller changes according to the contact portion of the package that contacts the touch roller. Therefore, in the bobbin winder, the package peripheral speed acquisition unit acquires the large-diameter side package peripheral speed having the fastest peripheral speed and the small-diameter side package peripheral speed having the slowest peripheral speed on the outer peripheral surface of the package. Then, the touch determination unit determines that the package has come into contact with the touch roller when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side. In this way, the bobbin winder can determine that the package has come into contact with the touch roller when forming the cone-shaped package.

In the thread winder, the touch determination unit hits the touch roller when the peripheral speed of the touch roller continues to be equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side for a predetermined determination time or longer. It may be determined that they are in contact with each other. In this case, the spooler can determine that the package has come into contact with the touch roller when the package has come into contact with the touch roller in a stable state.

In the bobbin winder, the package peripheral speed acquisition unit may derive the large diameter side package peripheral speed and the small diameter side package peripheral speed by calculation based on the shape of the bobbin and the rotation speed of the package. In this case, the bobbin winder can accurately calculate and obtain the peripheral speed of the package on the large diameter side and the peripheral speed of the package on the small diameter side based on the shape of the bobbin and the rotation speed of the package.

The thread winder further includes an attitude determination unit for determining the contact posture of the package in contact with the touch roller, and the package peripheral speed acquisition unit is an outer peripheral surface of the package at a predetermined position in the rotation axis direction of the bobbin. The reference package peripheral speed, which is the peripheral speed, is further acquired, and the attitude determination unit compares the reference package peripheral speed with the touch roller peripheral speed after the touch determination unit determines that the package has come into contact with the touch roller. May determine the contact posture.

Here, as described above, the peripheral speed of the touch roller changes depending on the contact portion of the package that comes into contact with the touch roller. Therefore, the attitude determination unit compares the peripheral speed of the reference package at a predetermined position on the outer peripheral surface of the package with the peripheral speed of the touch roller to determine which part of the package is in contact with the touch roller. That is, the contact posture of the package can be determined. In this way, the bobbin winder can determine the contact posture of the package that contacts the touch roller.

The thread winder has a traverse device that traverses the thread wound on the package by moving the thread guide unit on which the thread is hooked, and a thread speed detection unit that detects the thread speed in the winding direction of the thread wound by the package. Further, the posture determination unit further provides a contact attitude based on the temporal change of the difference between the yarn speed and the peripheral speed of the touch roller after the touch determination unit determines that the package has contacted the touch roller. May be determined.

Here, for example, when the large-diameter side end of the package is in contact with the touch roller (that is, the small-diameter side end is floating from the touch roller), the package and the touch roller are connected as the thread is wound. The layer of thread between them (the amount of thread) increases. Since the bobbin and the package are cone-shaped and the peripheral speeds are different between the large diameter side and the small diameter side, the outer peripheral surface of the package and the outer peripheral surface of the touch roller are in contact with each other at one point (drive point). Then, as the number of yarn layers increases, the drive point where the outer peripheral surface of the package and the touch roller come into contact with each other moves toward the center position (center position in the rotation axis direction) of the outer peripheral surface of the package. The speed of movement of this drive point changes depending on the speed at which the gap between the package and the touch roller is filled with the thread. That is, for example, the large-diameter side end of the package is in contact with the touch roller. In this state, if the gap between the package and the touch roller is wide (the gap between the small diameter side end of the package and the outer peripheral surface of the touch roller is wide), or if the gap between the package and the touch roller is narrow (small diameter side of the package). The drive point moves slower than when the gap between the end and the outer peripheral surface of the touch roller is narrow). Further, since the yarn is wound while being traversed between the large-diameter side end and the small-diameter side end of the package, the peripheral speed at the center position of the outer peripheral surface of the package is the yarn speed (average running speed of the yarn). Speed). Therefore, when the drive point moves to the vicinity of the center position of the outer peripheral surface of the package, the peripheral speed of the touch roller becomes substantially the same as the peripheral speed at the central position of the outer peripheral surface of the package. That is, the peripheral speed of the touch roller is substantially the same as the yarn speed. In this way, as the yarn is wound around the package, the peripheral speed of the touch roller converges to the yarn speed. The speed at which the peripheral speed of the touch roller converges to the yarn speed depends on the size of the gap between the package and the touch roller, that is, the state of inclination of the bobbin (package) rotation axis with respect to the rotation axis of the touch roller. Change. Therefore, the posture determination unit determines the state of inclination of the bobbin (package) with respect to the touch roller, that is, the contact attitude of the package with respect to the touch roller, based on the temporal change of the difference between the yarn speed and the peripheral speed of the touch roller. can do.

The thread winder has a notification determination unit that determines whether or not the contact posture determined by the posture determination unit is a predetermined contact posture of the notification target, and a notification determination unit that determines whether or not the contact posture is the contact posture of the notification target. A notification unit that notifies when it is determined to be present may be further provided. In this case, the operator of the bobbin winder can grasp the contact posture of the package based on the notification result of the notification unit. Then, the operator can take measures such as adjusting the contact posture of the package or stopping the winding of the thread.

The thread winder further includes a notification posture input unit for inputting the contact posture of the notification target, and the notification determination unit is a notification posture input unit input by the notification posture input unit as a predetermined contact posture of the notification target. The contact posture may be used. In this case, the operator of the bobbin winder can set the contact posture of the notification target by using the notification posture input unit. Then, the operator of the thread winder can switch the contact posture of the notification target according to, for example, the type of thread to be wound.

The present invention has a cradle that rotatably supports the bobbin by a bobbin holding portion that holds a cone-shaped bobbin, and a bobbin holding portion that is attached to the cradle and has a rotating shaft that is non-rotatably connected to the bobbin holding portion. The bobbin is rotated by rotating the bobbin, and the bobbin is wound with a thread to form a cone-shaped package. A contact determination method executed in a thread winder provided with, the large diameter side package peripheral speed which is the peripheral speed at the large diameter side end portion of the outer peripheral surface of the package and the small diameter side end portion of the outer peripheral surface of the package. The package peripheral speed acquisition step for acquiring the small diameter side package peripheral speed, which is the peripheral speed, the touch roller peripheral speed acquisition step for acquiring the touch roller peripheral speed, which is the peripheral speed of the outer peripheral surface of the touch roller, and the touch roller peripheral speed are It includes a touch determination step of determining that the package has come into contact with the touch roller when the peripheral speed of the package on the small diameter side or more and the peripheral speed of the package on the large diameter side or less.

Also in this contact determination method, similarly to the above-mentioned thread winder, when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the small diameter side package and equal to or less than the peripheral speed of the large diameter side package, it is determined that the package has come into contact with the touch roller. Thereby, according to this contact determination method, when forming a cone-shaped package, it can be determined that the package has come into contact with the touch roller.

The contact determination method further includes a bobbin installation step of holding the bobbin in the bobbin holding portion so that a gap is provided between the outer peripheral surface of the bobbin and the outer peripheral surface of the touch roller. , The drive unit may be driven to start winding the yarn in a state where a gap is provided between the outer peripheral surface of the bobbin and the outer peripheral surface of the touch roller. As a result, the winding of the thread can be started with the bobbin separated from the touch roller.

The contact determination program according to the present invention includes a cradle that rotatably supports the bobbin by a bobbin holding portion that holds a cone-shaped bobbin, and a rotating shaft that is attached to the cradle and non-rotatably connected to the bobbin holding portion. The bobbin is rotated by rotating the bobbin holding portion, and the bobbin is wound around the bobbin to form a cone-shaped package. In a thread winder provided with a drivenly rotating touch roller, the peripheral speed at the large-diameter side end of the outer peripheral surface of the package is the peripheral speed of the large-diameter side package and the peripheral speed at the small-diameter side end of the outer peripheral surface of the package. The package peripheral speed acquisition process for acquiring the small diameter side package peripheral speed, the touch roller peripheral speed acquisition process for acquiring the touch roller peripheral speed which is the peripheral speed of the outer peripheral surface of the touch roller, and the touch roller peripheral speed for the small diameter side package peripheral speed. When the speed is equal to or greater than the large diameter side package peripheral speed or less, the computer is made to execute a touch determination process for determining that the package has come into contact with the touch roller.

In this contact determination program as well, similarly to the above-mentioned thread winder, when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side, it is determined that the package has come into contact with the touch roller. Thereby, according to this contact determination program, when forming a cone-shaped package, it can be determined that the package has contacted the touch roller.

According to the present invention, it can be determined that the package has come into contact with the touch roller.

FIG. 1 is a front view of an automatic winder including the winder unit according to the embodiment. FIG. 2 is a schematic diagram and a block diagram showing a schematic configuration of the winder unit. FIG. 3 is an enlarged left side view showing the vicinity of the traverse device of the winder unit. FIG. 4 is a schematic view showing a state in which the touch roller is installed in a state of being separated from the take-up bobbin. FIG. 5A is a schematic view showing a state in which the package is in contact with the touch roller. FIG. 5B is a schematic view showing the shape of the take-up bobbin. FIG. 6A is a schematic view showing a state in which the large diameter side end portion of the package is in contact with the touch roller. FIG. 6B is a schematic view showing a state in which the center position of the package is in contact with the touch roller. FIG. 6C is a schematic view showing a state in which the small diameter side end of the package is in contact with the touch roller. FIG. 7A is a schematic view showing a state in which the large diameter side end portion of the package is in contact with the touch roller. FIG. 7B is a schematic view showing a state in which the small diameter side end portion of the package is in contact with the touch roller. FIG. 8 is a graph showing the time change of the peripheral speed of the touch roller. FIG. 9 is a block diagram showing a contact determination program.

Hereinafter, the spooling machine, the contact determination method, and the embodiment of the contact determination program according to the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted.

The overall configuration of the automatic winder 1 including the winder unit (thread winder) 10 of the present embodiment will be described with reference to FIG. In the present specification, the terms "upstream" and "downstream" mean upstream and downstream in the traveling direction of the yarn at the time of winding the yarn.

As shown in FIG. 1, the automatic winder 1 includes a plurality of winder units 10 arranged side by side, an automatic ball lifting device 80, and a machine base control device 90 as main configurations. Each winder unit 10 winds the unwound yarn 20 from the yarn feeding bobbin 21 onto a winding bobbin (bobbin) 22 (see FIG. 2) while traversing to form a package 30. The traverse means to give a reciprocating motion to the wound yarn. Package 30 is a twill-wound package.

When the package 30 is fully wound (full pipe) in each winder unit 10, the automatic ball lifting device 80 travels to the position of the winder unit 10 and discharges the fully wound package 30 from the winder unit 10. At the same time, an empty bobbin (empty winding bobbin 22) is supplied to the winder unit 10.

The machine stand control device 90 includes a setting unit (notification attitude input unit) 91, a display unit 92, and a speaker 93. The setting unit 91 can make settings for each winder unit 10 by the operator inputting a predetermined setting value or selecting an appropriate control method. The predetermined set value input to the setting unit 91 by the operator includes bobbin information for specifying the type (shape) of the take-up bobbin 22 for winding the thread 20. The bobbin information is not limited to being specified by the operator directly inputting the type of the take-up bobbin 22 to be used. For example, when the type of winding bobbin 22 to be used is determined by the type of yarn 20 to be wound, the bobbin information may be specified from the type of yarn 20 input by the operator.

Further, the setting unit 91 receives the input of the contact posture of the notification target. The contact posture of the notification target is input by the operator. The setting unit 91 sets the contact posture of the notification target input by the operator for each winder unit 10. The contact posture of the notification target will be described later. The display unit 92 is configured to be able to display the winding status of the thread 20 of each winder unit 10, the content of the trouble that has occurred, and the like. The display unit 92 may be composed of 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 56, which will be described later.

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 take-up unit main body 17 and a unit control unit 50 as main configurations.

The unit control unit 50 includes, for example, a CPU, a RAM, a ROM, an I / O port, and a communication port. A program for controlling each configuration of the take-up unit main body 17 is recorded in the ROM. Each part (details will be described later) provided in the winding unit main body 17 and the machine base control device 90 are connected to the I / O port and the communication port so that control information and the like can be communicated. As a result, the unit control unit 50 can control the operation of each unit included in the winding unit main body 17.

The winding unit main body 17 is in the thread traveling path between the thread feeding bobbin 21 and the touch roller 29, in order from the thread feeding bobbin 21 side, the thread unwinding assisting device 12, the tension applying device 13, and the thread splicing device. It has 14, a photoelectric fixed length device (thread speed detection unit) 15, and a thread monitoring device 16. A thread feeding portion 11 is provided at the lower part of the winding unit main body 17. The thread feeding section 11 is configured to be able to hold the thread feeding bobbin 21 conveyed by the bobbin transfer system (not shown) at a predetermined position.

The thread unwinding assisting device 12 lowers the regulating member 40 that covers the core tube of the thread feeding bobbin 21 in conjunction with the unwinding of the thread 20 from the thread feeding bobbin 21 so that the thread 20 from the thread feeding bobbin 21 is lowered. Assist in unraveling. The regulating member 40 contacts the balloon of the thread 20 formed on the upper part of the thread feeding bobbin 21 by the rotation and centrifugal force of the thread 20 unwound from the thread feeding bobbin 21, and controls the balloon of the thread 20 to an appropriate size. By doing so, the unwinding of the thread 20 is assisted. In the vicinity of the regulating member 40, a sensor (not shown) for detecting the chase portion of the yarn feeding bobbin 21 is provided. When this sensor detects the descent of the chase portion, the thread unwinding assisting device 12 lowers the regulating member 40 by, for example, an air cylinder (not shown) following the descent of the chase portion.

The tension applying device 13 applies a predetermined tension to the traveling thread 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 tooth is rotated by a rotary solenoid so as to be in a meshed state or an released state with respect to the fixed comb tooth. As the tension applying device 13, for example, a disk type device can be adopted in addition to the gate type device.

The thread splicing device 14 includes a bobbin thread from the thread feeding bobbin 21 and a package when the thread monitoring device 16 detects a thread defect and cuts the thread, or when the thread breaks during unwinding from the thread feeding bobbin 21. The needle thread from 30 is spliced. As the thread splicing device for splicing the needle thread and the bobbin thread, a mechanical knotter, a splicer using a fluid such as compressed air, or the like can be used.

The photoelectric fixed length device 15 detects the yarn speed of the yarn 20 in the winding direction of the yarn 20 wound on the winding bobbin (bobbin) 22 or the package 30. Here, the winding direction of the yarn 20 is a direction in which the yarn 20 advances toward the winding bobbin 22 or the package 30 by being wound on the winding bobbin 22 or the package 30. That is, the winding direction of the yarn 20 is a direction intersecting the traverse direction of the yarn 20 traversed by the traverse device 70 described later.

The photoelectric fixed length device 15 is, for example, a non-contact photoelectric fixed length device that detects the thread speed, which is the traveling speed of the thread 20, without touching the thread 20. Specifically, the photoelectric fixed length device 15 projects the thread 20 onto the light receiving element, and processes the change in the light current that occurs when the projected thread 20 travels by using the so-called spatial filter principle. May detect the yarn speed of the yarn 20 wound on the take-up bobbin 22 or the package 30.

The thread monitoring device 16 includes a head 49 in which a sensor (not shown) for detecting the thickness of the thread 20 is arranged, and an analyzer 59 that processes a thread thickness signal from the sensor. The analyzer 59 is provided in the unit control unit 50. However, the analyzer 59 of the thread monitoring device 16 is not limited to being provided in the unit control unit 50. The analyzer 59 may be provided in the vicinity of the head 49. The thread monitoring device 16 detects a thread defect such as a slab by monitoring the thread 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 in the vicinity of the head 49.

A bobbin thread catching member 25 that captures the thread end of the bobbin thread and guides it to the thread splicing device 14 is provided on the lower side of the thread splicing device 14. An upper thread catching member 26 for catching the thread end of the upper thread and guiding the upper thread to the thread joining device 14 is provided on the upper side of the thread joining device 14. The bobbin thread catching member 25 includes a bobbin thread pipe arm 33 and a bobbin thread suction port 32 formed at the tip of the bobbin thread pipe arm 33. The needle thread catching member 26 includes a needle thread pipe arm 36 and a needle thread suction port 35 formed at the tip of the needle thread pipe arm 36.

The bobbin thread pipe arm 33 and the needle thread pipe arm 36 are configured to be rotatable about a shaft 34 and a shaft 37, respectively. An appropriate negative pressure source is connected to the bobbin thread pipe arm 33 and the needle thread pipe arm 36, respectively. The bobbin thread pipe arm 33 is configured to generate a suction flow at the bobbin thread suction port 32 so that the thread end of the bobbin thread can be sucked and captured. The needle thread pipe arm 36 is configured to generate a suction flow at the needle thread suction port 35 so that the thread end of the needle thread can be sucked and captured. The bobbin thread pipe arm 33 and the needle thread pipe arm 36 are each provided with a shutter (not shown) on the proximal end side thereof. Each shutter is opened and closed in response to a signal from the unit control unit 50. Thereby, the stop and generation of the suction flow from the bobbin thread suction port 32 and the upper thread suction port 35 are controlled.

The take-up unit main body 17 includes a cradle 23 that detachably and rotatably supports the take-up bobbin 22, and a touch roller 29 that can rotate in contact with the outer peripheral surface of the take-up bobbin 22 or the outer peripheral surface of the package 30. Further prepared. The take-up bobbin 22 has a cone-shaped 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 in the vicinity of the cradle 23. The winding unit main body 17 winds the thread 20 on the winding bobbin 22 or the package 30 while traversing the thread 20 by the traverse device 70. A guide plate 28 is provided slightly upstream of the traverse location. The guide plate 28 guides the thread 20 on the upstream side to the traverse point. A ceramic traverse fulcrum 27 is provided further upstream of the guide plate 28. The traverse device 70 traverses the thread 20 in the direction indicated by the arrow in FIG. 2 with the traverse fulcrum portion 27 as a fulcrum.

The winding unit main body 17 forms the cone-shaped package 30 by winding the thread 20 on the cone-shaped winding bobbin 22 while traversing the thread 20 by the traverse device 70.

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 view seen 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 counterclockwise direction is counterclockwise in FIG.

The traverse drive motor 76 is a motor that drives the traverse arm 74, and is composed of a servo motor or the like. The operation of the traverse drive motor 76 is controlled by the unit control unit 50. The traverse drive motor 76 may be another motor such as a step motor or a voice coil motor. A hook-shaped thread guide portion 73 on which the thread 20 is hooked is formed at the tip of the traverse arm 74, for example. The traverse arm 74 can guide the thread 20 by the thread guide portion 73. The traverse device 70 can traverse the thread 20 wound around the package 30 by reciprocating and reciprocating the traverse arm 74 (moving the thread guide portion 73) while the thread guide portion 73 guides the thread 20. can.

The power of the traverse drive motor 76 is transmitted to the base end portion of the traverse arm 74 via the output shaft 77. When the rotor of the traverse drive motor 76 rotates in the forward and reverse directions, the traverse arm 74 reciprocates in the direction perpendicular to the paper surface in FIG. 3 (the left-right direction in FIG. 2 (the winding width direction of the package 30)). The traverse arm 74 in FIG. 3 indicates a position at the end of the traverse.

The touch roller 29 abuts on the outer peripheral surface of the package 30 to rotate in a driven manner as the package 30 rotates. The touch roller 29 has a cylindrical shape having 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 in 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 control unit 50. As the rotation speed sensor 31, various sensors such as a sensor for measuring a change in magnetism of a magnet attached to the touch roller 29 can be used.

As shown in FIG. 4, in the present embodiment, the touch roller 29 is provided with a gap T 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. It is installed so that it can be used. The size of the gap T can be set, for example, by adjusting the position of the cradle 23 supporting the winding bobbin 22 or the installation position of the touch roller 29 before the start of winding the yarn 20. In this way, the first bobbin holding portion B1 and the second bobbin holding portion B2 are provided by the operator so that a gap T is provided between the outer peripheral surface of the take-up bobbin 22 and the outer peripheral surface of the touch roller 29. A bobbin installation step is performed to hold the take-up bobbin 22. Then, the winder unit 10 drives the package drive motor 41 to start winding the yarn 20 in a state where a gap T is provided between the outer peripheral surface of the winding bobbin 22 and the outer peripheral surface of the touch roller 29. ..

Thereby, for example, even if the winding bobbin 22 vibrates at the start of winding the yarn 20, the vibration of the winding bobbin 22 can be absorbed by the gap T. The gap T may be about 1 mm to 2 mm as an example. However, the gap T is appropriately set according to the model of the winder unit 10, the type of the take-up bobbin 22, and the like.

The cradle 23 has a pair of a first cradle arm 23a and a second cradle arm 23b, and a connecting portion 23c that connects a base end portion of the first cradle arm 23a and a base end portion 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 the increase in the diameter of the package 30 due to the winding of the thread 20 on the winding bobbin 22 by the rotation of the cradle 23.

A first bobbin holding portion (bobbin holding portion) B1 for holding one end of the take-up bobbin 22 is provided at the tip of the first cradle arm 23a. A second bobbin holding portion B2 for holding the other end of the take-up bobbin 22 is provided at the tip of the second cradle arm 23b. A package drive motor (drive unit) 41 composed of a servomotor is attached to the tip of the first cradle arm 23a. The package drive motor 41 rotationally drives the take-up bobbin 22 held by the first bobbin holding portion B1 and the second bobbin holding portion B2 in order to wind the thread 20 around the take-up bobbin 22. The package drive motor 41 rotates the package 30 (winding bobbin 22) in the forward rotation direction, and rotates the package 30 in the reverse winding direction opposite to the winding direction. Can be rotationally driven. The motor shaft (rotating shaft) of the package drive motor 41 is connected to the first bobbin holding portion B1 that holds the take-up bobbin 22 so as not to rotate relative to each other. The package drive motor 41 rotates the take-up bobbin 22 by rotating the first bobbin holding portion B1. In this way, the take-up bobbin 22 is rotated by the package drive motor 41 by a so-called direct drive method.

The operation of the package drive motor 41 is controlled by the unit control unit 50. The package drive motor 41 is not limited to the 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 control unit 50.

In addition to the analyzer 59 described above, the unit control unit 50 includes a package peripheral speed acquisition unit 51, a touch roller peripheral speed acquisition unit 52, a touch determination unit 53, a posture determination unit 54, a notification determination unit 55, a notification instruction unit 56, and a storage unit. 57 and a package drive control unit 58 are further provided.

As shown in FIG. 5A, the package peripheral speed acquisition unit 51 is the large diameter side which is the peripheral speed at the large diameter side end portion 30a of the outer peripheral surface of the cone-shaped package 30 formed on the take-up bobbin 22. The package peripheral speed and the small diameter side package peripheral speed, which is the peripheral speed at the small diameter side end portion 30b of the outer peripheral surface of the package 30, are acquired. That is, the package peripheral speed acquisition unit 51 executes the package peripheral speed acquisition step of acquiring the large diameter side package peripheral speed and the small diameter side package peripheral speed.

In the present embodiment, the package peripheral speed acquisition unit 51 derives the large-diameter side package peripheral speed and the small-diameter side package peripheral speed by calculation based on the shape of the take-up bobbin 22 and the rotation speed of the package 30. The shape of the take-up bobbin 22 includes information for specifying the shape of the take-up bobbin 22, information about a portion of the outer peripheral surface of the take-up bobbin 22 that forms the package 30, and the like. Specifically, as an example, the bobbin shape includes a bobbin inclination angle α for specifying the inclination (tapered shape) of the outer peripheral surface of the cone-shaped winding bobbin 22 as shown in FIG. 5 (b). , The bobbin center outer diameter K at the center position in the rotation axis direction of the take-up bobbin 22, and the take-up width L of the package 30 are included. Based on the bobbin shape and the rotation speed of the package 30, the package peripheral speed acquisition unit 51 determines the large-diameter side package peripheral speed and the small-diameter side package peripheral speed of the package 30 formed on the winding bobbin 22 by a well-known method. Can be calculated.

For example, the package peripheral speed acquisition unit 51 calculates the peripheral length [m] of the large diameter side end portion 30a based on the shape of the take-up bobbin 22. The package peripheral speed acquisition unit 51 can obtain the large diameter side package peripheral speed [m / min] by multiplying the peripheral length of the large diameter side end portion 30a by the rotation speed [rpm] of the package 30. Similarly, the package peripheral speed acquisition unit 51 calculates the peripheral length [m] of the small diameter side end portion 30b based on the shape of the take-up bobbin 22, and rotates the package 30 to the calculated peripheral length of the small diameter side end portion 30b. By multiplying the speed [rpm], the peripheral speed [m / min] of the package on the small diameter side can be obtained. The package peripheral speed acquisition unit 51 can use the detection result of the rotation speed sensor 24 that detects the rotation speed of the motor shaft of the package drive motor 41 as the rotation speed of the package 30. [M], [rpm], and [m / min] have been exemplified as examples of the units of the peripheral length, the rotational speed, and the peripheral speed, respectively, but these units are examples and are limited to these units. Not done.

The shape of the take-up bobbin 22 is stored in advance in the storage unit 57 for each type of the take-up bobbin 22. The package peripheral speed acquisition unit 51 can specify the type of the take-up bobbin 22 used based on the bobbin information input to the setting unit 91. The package peripheral speed acquisition unit 51 may acquire the shape of the take-up bobbin 22 according to the specified type from the storage unit 57.

Here, the large-diameter package peripheral speed and the small-diameter package peripheral speed calculated by the package peripheral speed acquisition unit 51 are such that the package 30 formed on the winding bobbin 22 after the start of winding the yarn 20 is the touch roller 29. It is used to determine whether or not it has come into contact with. As described above, at the start of winding the yarn 20, a slight gap T is provided between the outer peripheral surface of the winding bobbin 22 and the outer peripheral surface of the touch roller 29. Since the gap T is small, when the gap T is filled with the thread 20 and the outer peripheral surface of the package 30 comes into contact with the outer peripheral surface of the touch roller 29 (when the state of non-contact changes to the state of contact). The layer thickness of the package 30 is thin. That is, the package peripheral speed acquisition unit 51 may be able to calculate the large diameter side package peripheral speed and the small diameter side package peripheral speed in the package 30 having a very thin layer thickness.

Therefore, the package peripheral speed acquisition unit 51 regards the shape of the outer peripheral surface of the take-up bobbin 22 as the shape of the outer peripheral surface of the package 30, and uses the shape of the outer peripheral surface of the take-up bobbin 22 on the large diameter side of the package 30. Peripheral speed and the like may be calculated. Specifically, for example, the package peripheral speed acquisition unit 51 specifies the shape of the portion of the outer peripheral surface of the winding bobbin 22 on which the thread 20 is wound, based on the bobbin information. Then, the package peripheral speed acquisition unit 51 may use the specified shape as the shape of the outer peripheral surface of the package 30 for calculating the large diameter side package peripheral speed and the small diameter side package peripheral speed.

However, the package peripheral speed acquisition unit 51 is not limited to using the shape of the outer peripheral surface of the take-up bobbin 22 as the shape of the outer peripheral surface of the package 30. That is, the package peripheral speed acquisition unit 51 may calculate the large diameter side package peripheral speed or the like in consideration of the layer thickness of the package 30 wound around the take-up bobbin 22. In this case, for example, the package peripheral speed acquisition unit 51 may calculate the layer thickness of the package 30 based on the length of the thread 20 wound around the take-up bobbin 22. The length of the yarn 20 wound around the take-up bobbin 22 may be calculated based on, for example, the yarn speed of the yarn 20 detected by the photoelectric constant length device 15, the elapsed time from the start of winding, and the like. ..

Further, the package peripheral speed acquisition unit 51 determines the 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 package 30 comes into contact with the touch roller 29 (reference package peripheral speed). To get. After the package 30 comes into contact with the touch roller 29, the gap T is filled with the thread 20 by winding the thread 20 on the take-up bobbin 22, and the thread 20 wound on the take-up bobbin 22 It is in contact with the touch roller 29. That is, the package 30 is in contact with the touch roller 29. This state is a state in which the package 30 is determined to have come into contact with the touch roller 29 by the touch determination unit 53, which will be described in detail later.

In the present embodiment, the package peripheral speed acquisition unit 51 acquires the peripheral speed of the outer peripheral surface of the package 30 at the central position in the rotation axis direction as the peripheral speed at a predetermined position in the rotation axis direction. The package peripheral speed acquisition unit 51 can acquire the peripheral speed of the outer peripheral surface of the package 30 at the center position in the rotation axis direction based on a well-known method.

For example, the package peripheral speed acquisition unit 51 may derive the peripheral speed of the outer peripheral surface of the package 30 at a predetermined position by calculation based on the peripheral speed calculation information for calculating the peripheral speed. The peripheral speed calculation information includes, for example, at least one of the shape of the take-up bobbin 22, the rotation speed of the take-up bobbin 22, and the thread speed of the take-up thread 20. Information stored in the storage unit 57 can be used as the shape of the winding bobbin 22. As the rotation speed of the take-up bobbin 22, the detection result of the rotation speed sensor 24 can be used. As the yarn speed of the yarn 20 to be wound, the detection result of the photoelectric constant length device 15 can be used. As the yarn speed, the detection result of the yarn monitoring device 16 can be used instead of the detection result of the photoelectric fixed length device 15.

As an example, the package peripheral speed acquisition unit 51 determines the thread speed detected by the photoelectric constant length device 15 and the rotation speed detected by the rotation speed sensor 24 after the package 30 comes into contact with the touch roller 29. Based on this, the diameter at the center position in the rotation axis direction of the package 30 is calculated. Then, the package peripheral speed acquisition unit 51 may calculate the peripheral speed of the outer peripheral surface at the center position of the package 30 based on the calculated diameter of the package 30. As another example, after the package 30 comes into contact with the touch roller 29, the package peripheral speed acquisition unit 51 sets the thread speed of the thread 20 detected by the photoelectric constant length device 15 in the rotation axis direction in the package 30. It may be used as the peripheral speed of the outer peripheral surface at the center position of. In the present 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 thread speed of the thread 20 detected by the photoelectric fixed length device 15 becomes the peripheral speed of the outer peripheral surface at the central position in the rotation axis direction in the package 30.

Hereinafter, the peripheral speed of the outer peripheral surface of the package 30 at the center position in the rotation axis direction is referred to as "package center diameter peripheral speed".

The package drive control unit 58 controls the rotation speed of the package drive motor 41 so that the yarn speed of the yarn 20 wound by the take-up bobbin 22 or the package 30 becomes a predetermined yarn speed. For example, the package drive control unit 58 calculates the rotation speed of the package drive motor 41 for achieving a predetermined yarn speed based on the diameter of the take-up bobbin 22 or the package 30 at the center position in the rotation axis direction. can do. The package drive control unit 58 can calculate the diameter of the take-up bobbin 22 or the package 30 at the center position in the rotation axis direction based on a well-known method.

As an example, the package drive control unit 58 is stored in the storage unit 57 in advance as the diameter (bobbin center outer diameter K) at the center position in the rotation axis direction of the winding bobbin 22 at the start of winding the yarn 20. The shape of the winding bobbin 22 may be used. Further, as an example, after the start of winding the yarn 20, the package drive control unit 58 packages 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 diameter of 30 may be calculated. When calculating the diameter of the package 30 using the yarn speed detected by the photoelectric constant length device 15, the package drive control unit 58 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.

The touch roller peripheral speed acquisition unit 52 acquires the peripheral speed of the outer peripheral surface of the touch roller 29. As an example, the touch roller peripheral speed acquisition unit 52 derives the peripheral speed of the outer peripheral surface of the touch roller 29 by calculation based on the size of the diameter of the touch roller 29 and the rotation speed detected by the rotation speed sensor 31. can do. The size of the diameter of the touch roller 29 is set in advance in the touch roller peripheral speed acquisition unit 52. Hereinafter, the peripheral speed of the outer peripheral surface of the touch roller 29 is referred to as "touch roller peripheral speed". In this way, the touch roller peripheral speed acquisition unit 52 executes the touch roller peripheral speed acquisition step for acquiring the touch roller peripheral speed.

For example, the touch roller peripheral speed acquisition unit 52 calculates the peripheral length [m] of the touch roller 29 based on the size of the diameter of the touch roller 29. The touch roller peripheral speed acquisition unit 52 can obtain the touch roller peripheral speed [m / min] by multiplying the peripheral length of the touch roller 29 by the rotation speed [rpm] of the package 30.

In the touch determination unit 53, after the winding of the thread 20 is started with a gap between the outer peripheral surface of the touch roller 29 and the outer peripheral surface of the take-up bobbin 22, the package 30 comes into contact with the touch roller 29. Judge whether or not. Specifically, in the touch determination unit 53, as shown in the following equation (1), the touch roller peripheral speed acquired by the touch roller peripheral speed acquisition unit 52 is acquired by the package peripheral speed acquisition unit 51. When the peripheral speed of the package on the small diameter side or more and the peripheral speed of the package on the large diameter side or less, it is determined that the package 30 has come into contact with the touch roller 29.
Small diameter side package peripheral speed ≤ Touch roller peripheral speed ≤ Large diameter side package peripheral speed ... (1)
In this way, the touch determination unit 53 executes the touch determination step of determining that the package 30 has come into contact with the touch roller 29 when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side. do.

Here, in the winder unit 10, when the package 30 comes into contact with the touch roller 29, the touch roller 29 is driven to rotate by the rotation of the package 30, so that the peripheral speed of the touch roller 29 is the same as the peripheral speed of the package 30. .. The winder unit 10 of the present embodiment forms a cone-shaped package 30. The package 30 and the touch roller 29 come into contact with each other at a drive point (a point where the package 30 and the touch roller 29 come into contact with each other). The touch roller 29 is driven and rotated by the package 30 at the drive point. This drive point is located either between the large diameter side end 30a of the outer peripheral surface of the package 30 and the small diameter side end 30b of the outer peripheral surface of the package. When the rotating cone-shaped package 30 is in contact with the touch roller 29, the drive point is located at the large-diameter side end 30a of the outer peripheral surface of the package 30, and the drive point is on the outer peripheral surface of the package 30. The peripheral speed of the touch roller 29 is different from that when it is located at the small diameter side end portion 30b.

In this way, even if the rotation speed of the package 30 is constant, the peripheral speed of the touch roller 29 changes according to the contact portion of the package 30 that abuts on the touch roller 29. Therefore, the package peripheral speed acquisition unit 51 acquires the large-diameter side package peripheral speed having the fastest peripheral speed and the small-diameter side package peripheral speed having the slowest peripheral speed on the outer peripheral surface of the package 30. Then, the touch determination unit 53 determines that the package 30 has come into contact with the touch roller 29 when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side. As a result, the touch determination unit 53 can determine that the package 30 has come into contact with the touch roller 29 regardless of the position of the touch roller 29 on the outer peripheral surface of the package 30.

The value of the touch roller peripheral speed acquired by the touch roller peripheral speed acquisition unit 52 is not stable, and the value may fluctuate up and down. For example, the touch roller 29 may rotate due to the influence of the wind pressure of the rotating package 30 or the like. Therefore, in the touch determination unit 53, when the state in which the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side continues for a predetermined determination time or longer, the package 30 is transferred to the touch roller 29. It can be determined that they have come into contact with each other.

The posture determination unit 54 determines the contact posture of the package 30 that contacts the touch roller 29 after the touch determination unit 53 determines that the package 30 has contacted the touch roller 29. The attitude determination unit 54 hits the touch roller 29 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 touch roller peripheral speed acquisition unit 52. The contact posture of the package 30 in contact is determined. Here, the posture determination unit 54 determines whether the large-diameter side end 30a of the package 30 is in contact with the touch roller 29, the small-diameter side end 30b is in contact with the touch roller 29, or the large-diameter side as the contact posture. It is determined whether the central position between the end portion 30a and the small diameter side end portion 30b is in contact with the touch roller 29.

Here, as described above, even if the rotation speed of the package 30 is constant, the peripheral speed of the touch roller changes according to the position of the drive point where the package 30 abuts on the touch roller 29. Therefore, the attitude determination unit 54 compares the peripheral speed of the package center diameter with the peripheral speed of the touch roller to determine which part of the package 30 is in contact with the touch roller 29, that is, the package 30 with respect to the touch roller 29. The contact posture can be determined.

Specifically, when the peripheral speed of the touch roller and the peripheral speed of the center diameter of the package satisfy the following equation (2) after the package 30 comes into contact with the touch roller 29, the posture determination unit 54 has FIG. 6 (a). ), It is determined that the large diameter side end portion 30a of the package 30 is in contact with the touch roller 29.
Touch roller peripheral speed / Package center diameter peripheral speed> 1 ... (2)

When the peripheral speed of the touch roller and the peripheral speed of the package center diameter satisfy the following equation (3) after the package 30 comes into contact with the touch roller 29, the attitude determination unit 54 is as shown in FIG. 6 (b). In addition, it is determined that the outer peripheral surface of the package 30 at the center position in the rotation axis direction is in contact with the touch roller 29.
Touch roller peripheral speed / Package center diameter peripheral speed = 1 ... (3)

When the peripheral speed of the touch roller and the peripheral speed of the package center diameter satisfy the following equation (4) after the package 30 comes into contact with the touch roller 29, the attitude determination unit 54 is as shown in FIG. 6 (c). It is determined that the small diameter side end portion 30b of the package 30 is in contact with the touch roller 29.
Touch roller peripheral speed / Package center diameter peripheral speed <1 ... (4)

Further, the posture determination unit 54 is based on a temporal change in 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 touch roller peripheral speed acquisition unit 52. The contact posture can be determined. Here, in the posture determination unit 54, as shown in FIG. 7A, the large-diameter side end portion 30a of the package 30 is in contact with the touch roller 29 (the gap T is 0 at the large-diameter side end portion 30a). In this state), it is determined as the contact posture whether the gap Tb between the small diameter side end portion 30b and the touch roller 29 is wide or narrow. Similarly, in the posture determination unit 54, as shown in FIG. 7B, the small diameter side end portion 30b of the package 30 is in contact with the touch roller 29 (the gap T becomes 0 at the small diameter side end portion 30b). In this state), it is determined as the contact posture whether the gap Ta between the large diameter side end portion 30a and the touch roller 29 is wide or narrow.

Here, for example, as shown in FIG. 7A, when the large-diameter side end portion 30a of the package 30 is in contact with the touch roller 29, as the thread 20 is wound, the package 30 and the touch roller 29 The layer of thread 20 between them (the amount of thread) increases. The take-up bobbin 22 and the package 30 are cone-shaped, and the peripheral speed differs between the large diameter side and the small diameter side. Therefore, as described above, 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 (drive point). Then, as the number of layers of the yarn 20 increases, the drive point at which the outer peripheral surface of the package 30 and the touch roller 29 come into contact with each other moves toward the center position (center position in the rotation axis direction) of the outer peripheral surface of the package 30. .. The speed of movement of the drive point changes depending on the speed at which the gap between the package 30 and the touch roller 29 is filled with the thread.

That is, for example, the large-diameter side end portion 30a of the package 30 is in contact with the touch roller 29. In this state, when the gap between the package 30 and the touch roller 29 is wide, the movement of the drive point is slower than when the gap between the package 30 and the touch roller 29 is narrow. Specifically, when the gap between the package 30 and the touch roller 29 is wide as shown in FIG. 7A (when the gap Tb between the small diameter side end portion 30b and the outer peripheral surface of the touch roller 29 is wide), As shown in FIG. 6A, the gap is narrower than when the gap between the package 30 and the touch roller 29 is narrow (when the gap Tb between the small diameter side end portion 30b and the outer peripheral surface of the touch roller 29 is narrow). The drive point moves slowly because the speed of filling by 20 is slow.

Similarly, the small diameter side end portion 30b of the package 30 is in contact with the touch roller 29. In this state, when the gap between the package 30 and the touch roller 29 is wide, the movement of the drive point is slower than when the gap between the package 30 and the touch roller 29 is narrow. Specifically, as shown in FIG. 7B, when the gap between the package 30 and the touch roller 29 is wide (the gap Ta between the large diameter side end portion 30a of the package 30 and the outer peripheral surface of the touch roller 29 is wide). Case) is compared with the case where the gap between the package 30 and the touch roller 29 is narrow as shown in FIG. 6 (c) (when the gap Ta between the large diameter side end portion 30a and the outer peripheral surface of the touch roller 29 is narrow). Therefore, the speed at which the gap is filled by the thread 20 is slow, so that the drive point moves slowly.

Further, since the yarn 20 is wound while being traversed between the large-diameter side end portion 30a and the small-diameter side end portion 30b of the package 30, the package center diameter peripheral speed is the yarn speed of the yarn 20 (yarn 20). Average running speed). Therefore, when the drive point moves to the vicinity of the center position of the outer peripheral surface of the package 30 (near the center position in the rotation axis direction), the peripheral speed of the touch roller becomes substantially the same as the peripheral speed of the center diameter of the package. That is, the peripheral speed of the touch roller is substantially the same as the yarn speed of the yarn 20. However, the peripheral speed of the touch roller and the peripheral speed of the center diameter of the package may not be exactly the same due to the occurrence of slippage between the package 30 and the touch roller 29.

In this way, as the yarn 20 is wound around the take-up bobbin 22, the peripheral speed of the touch roller converges to the yarn speed of the yarn 20. 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 package 30 and the touch roller 29, that is, the winding bobbin 22 with respect to the rotation axis of the touch roller 29 (package 30). ) Changes depending on the state of inclination of the rotation axis.

Here, FIG. 8 shows a change in the peripheral speed of the touch roller when the yarn 20 is wound in the state shown in FIGS. 6 (a), 6 (c), 7 (a) and 7 (b). .. The curve L1 shown in FIG. 8 shows the change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 7 (a). The curve L2 shown in FIG. 8 shows the change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 6A. The curve S1 shown in FIG. 8 shows the change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 7 (b). The curve S2 shown in FIG. 8 shows the change in peripheral speed when the yarn 20 is wound in the state shown in FIG. 6 (c).

As described above, for example, even if the large-diameter side end portion 30a of the package 30 is in contact with the touch roller 29, the curve L1 and the curve L1 in FIG. As shown by L2, the time required for the peripheral speed of the touch roller to converge to the yarn speed of the yarn 20 is different. Similarly, even if the small diameter side end 30b of the package 30 is in contact with the touch roller 29, it is shown by curves S1 and S2 in FIG. 8 depending on the state of inclination of the take-up bobbin 22 (package 30) with respect to the touch roller 29. As described above, the time required for the peripheral speed of the touch roller to converge to the yarn speed of the yarn 20 is different.

Therefore, the posture determination unit 54 refers to the touch roller 29 based on how much the peripheral speed of the touch roller after the elapse of a predetermined time from the start of winding the yarn 20 converges with respect to the yarn speed of the yarn 20. The state of inclination of the take-up bobbin 22 (package 30), that is, the contact posture can be determined. The posture determination unit 54 determines the large diameter side of the package 30 based on whether the peripheral speed of the touch roller after a lapse of a predetermined time 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 end portion 30a and the small diameter side end portion 30b is in contact with the touch roller 29. That is, when the peripheral speed of the touch roller is faster than the yarn speed of the yarn 20, the posture determination unit 54 determines that the large-diameter side end portion 30a of the package 30 is in contact with the outer peripheral surface of the touch roller 29. When the peripheral speed of the touch roller is slower than the yarn speed of the yarn 20, the posture determination unit 54 determines that the small diameter side end portion 30b of the package 30 is in contact with the outer peripheral surface of the touch roller 29.

As described above, the attitude determination unit 54 touches any of the large-diameter side end portion 30a, the small-diameter side end portion 30b, and the center position of the package 30 by comparing the touch roller peripheral speed and the package center diameter peripheral speed. Whether or not it is in contact with the roller 29 is determined as the contact posture. Further, the posture determination unit 54 sets the tilted state of the take-up bobbin 22 (package 30) with respect to the touch roller 29 as the contact posture based on the temporal change of the difference between the yarn speed of the yarn 20 and the peripheral speed of the touch roller. judge.

The notification determination unit 55 determines whether or not the contact posture determined by the posture determination unit 54 is a predetermined contact posture of the notification target. The notification determination unit 55 uses the contact posture of the notification target set by the setting unit 91 as the predetermined contact posture of the notification target. The contact posture of the notification target is which of the large-diameter side end portion 30a, the small-diameter side end portion 30b, and the center position of the package 30 is in contact with the touch roller 29, and the winding bobbin 22 with respect to the touch roller 29 ( At least one of the tilted states of the package 30) is included.

In the present embodiment, as an example of the contact posture of the notification target, a state in which the small diameter side end portion 30b of the package 30 is in contact with the touch roller 29 and a state in which the central position of the package 30 is in contact with the touch roller 29. May be set. Further, as an example of the contact posture of the notification target, the large-diameter side end portion 30a of the package 30 abuts on the touch roller 29, and the gap Tb between the small-diameter side end portion 30b of the package 30 and the outer peripheral surface of the touch roller 29 is formed. The state of inclination of the package 30 which becomes equal to or more than a predetermined value may be set.

When the notification determination unit 55 determines that the contact posture of the package 30 is the contact posture of the notification target, the notification instruction unit 56 operates the speaker 93 to perform notification. In this way, the notification instruction unit 56 and the speaker 93 function as a notification unit that notifies when the notification determination unit 55 determines that the contact posture is the notification target.

The storage unit 57 stores the identification information for identifying the package 30 and the contact posture determined by the posture determination unit 54 for the package 30 in association with each other. As the identification information of the package 30, the storage unit 57 can use the identification information given by a well-known method such as the identification information given by the unit control unit 50 to manage each package 30. As described above, the storage unit 57 stores the shape of the take-up bobbin 22 in advance for each type of the take-up bobbin 22.

Further, the storage unit 57 stores programs for executing various operations in the winder unit 10. For example, the storage unit 57 stores a contact determination program for determining that the package 30 has contacted the touch roller 29. Specifically, as shown in FIG. 9, the contact determination program P is stored in the storage unit 57. The storage unit 57 may be a non-temporary computer-readable storage medium that stores the contact determination program P. The unit control unit 50 realizes the contact determination method in the winder unit 10 by reading and executing the contact determination program P on the processor. The contact determination program P includes a package peripheral speed acquisition module P1, a touch roller peripheral speed acquisition module P2, and a touch determination module P3. The processing realized by executing the package peripheral speed acquisition module P1, the touch roller peripheral speed acquisition module P2, and the touch determination module P3 is the package peripheral speed acquisition process and the touch roller peripheral speed acquisition in the above-mentioned package peripheral speed acquisition step. This is the same as the touch roller peripheral speed acquisition process in the step and the touch determination process in the touch determination step. The contact determination program P may be provided after being fixedly recorded on a tangible recording medium such as a CD-ROM, a DVD-ROM, or a semiconductor memory. Alternatively, the contact determination program P may be provided as a data signal via the communication network.

The unit control unit 50 controls the operation of each part of the winder unit 10 in addition to the determination of the contact posture described above. For example, the unit control unit 50 controls the operation of the traverse drive motor 76. Further, the unit control unit 50 controls the catching operation of the bobbin thread catching member 25 and the needle thread catching member 26 (rotation of the bobbin thread pipe arm 33 and the needle thread catching member 36). The unit control unit 50 controls the opening and closing of the shutters provided on the bobbin thread pipe arm 33 and the needle thread pipe arm 36, and controls the stop and generation of the suction flow from the bobbin thread suction port 32 and the needle thread suction port 35. ..

As described above, in the winder unit 10 of the present embodiment, the winding of the thread 20 is started with a gap T between the outer peripheral surface of the touch roller 29 and the outer peripheral surface of the winding bobbin 22. The touch determination unit 53 determines whether or not the package 30 has come into contact with the touch roller 29 based on the peripheral speed of the package 30 and the peripheral speed of the touch roller 29. Here, the take-up bobbin 22 and the package 30 are cone-shaped. Therefore, as described above, even if the rotation speed of the package 30 is constant, the peripheral speed of the touch roller 29 changes according to the contact portion of the package 30 that abuts on the touch roller 29. Therefore, the package peripheral speed acquisition unit 51 acquires the large-diameter side package peripheral speed having the fastest peripheral speed and the small-diameter side package peripheral speed having the slowest peripheral speed on the outer peripheral surface of the package 30. Then, the touch determination unit 53 determines that the package 30 has come into contact with the touch roller 29 when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side. As a result, the touch determination unit 53 can determine that the package 30 has come into contact with the touch roller 29 regardless of the position of the touch roller 29 on the outer peripheral surface of the package 30. In this way, the winder unit 10 can determine that the package 30 has come into contact with the touch roller 29 when forming the cone-shaped package 30.

In the touch determination unit 53, the package 30 comes into contact with the touch roller 29 when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side for a predetermined determination time or longer. Is determined. In this case, the winder unit 10 can determine that the package 30 has come into contact with the touch roller 29 when the package 30 has come into contact with the touch roller 29 in a stable state.

The package peripheral speed acquisition unit 51 derives the large-diameter side package peripheral speed and the small-diameter side package peripheral speed of the package 30 by calculation based on the shape of the take-up bobbin 22 and the rotation speed of the package 30. In this case, the winder unit 10 can accurately calculate and obtain the large diameter side package peripheral speed and the small diameter side package peripheral speed of the package 30.

After the attitude determination unit 54 determines that the package 30 has come into contact with the touch roller 29 by the touch determination unit 53, the attitude determination unit 54 compares the package center diameter peripheral speed (reference package peripheral speed) with the touch roller peripheral speed. The contact posture of the package 30 is determined. Here, as described above, the peripheral speed of the touch roller 29 changes according to the contact portion of the package 30 that comes into contact with the touch roller 29. Therefore, the attitude determination unit 54 compares the peripheral speed at a predetermined position on the outer peripheral surface of the package 30 (the peripheral speed of the center diameter of the package) with the peripheral speed of the touch roller 29 to determine which of the package 30. Whether the portion is in contact with the touch roller 29, that is, the contact posture of the package 30 can be determined. In this way, the winder unit 10 can determine the contact posture of the package 30 that contacts the touch roller 29.

The speed of movement of the drive point that moves toward the center position of the outer peripheral surface of the package 30 changes depending on the state of inclination of the take-up bobbin 22 with respect to the touch roller 29. 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 posture determination unit 54 is in an inclined state of the take-up bobbin 22 with respect to the touch roller 29, that is, the contact of the package 30 with the touch roller 29, based on the temporal change of the difference between the yarn speed and the peripheral speed of the touch roller. The posture can be determined.

When the notification determination unit 55 determines that the contact posture is the notification target, the notification instruction unit 56 outputs a sound from the speaker 93 to perform notification. In this case, the operator of the winder unit 10 can grasp the contact posture 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 posture of the take-up bobbin 22 or the package 30 or stopping the take-up of the yarn 20.

When the notification determination unit 55 determines that the contact posture is the notification target, the notification instruction unit 56 outputs a sound from the speaker 93 to perform notification. In this case, the operator of the winder unit 10 can grasp the contact posture 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 posture of the take-up bobbin 22 or the package 30 or stopping the take-up of the yarn 20.

Further, also in the contact determination method and the contact determination program P executed in the winder unit 10, when the peripheral speed of the touch roller is equal to or more than the peripheral speed of the small diameter side package and equal to or less than the peripheral speed of the large diameter side package, as in the winder unit 10. , It is determined that the package 30 has come into contact with the touch roller 29. Thereby, according to the contact determination method and the contact determination program P, it can be determined that the package 30 has come into contact with the touch roller 29 when the cone-shaped package 30 is formed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. The present invention may be modified without changing the gist described in each claim.

For example, in the winder unit 10 described above, after the touch determination unit 53 determines that the package 30 has come into contact with the touch roller 29, the attitude determination unit 54 determines the contact posture. Not limited to this, the winder unit 10 may perform a process other than the determination of the contact posture based on the determination result of the contact in the touch determination unit 53.

The package peripheral speed acquisition unit 51 is not limited to deriving the large diameter side package peripheral speed and the small diameter side package peripheral speed by calculation. For example, the storage unit 57 may store the large diameter side package peripheral speed and the small diameter side package peripheral speed for each shape of the take-up bobbin 22 in advance. In this case, the package peripheral speed acquisition unit 51 may acquire the large-diameter side package peripheral speed and the small-diameter side package peripheral speed according to the shape of the take-up bobbin 22 from the storage unit 57.

For example, due to distortion of the take-up bobbin 22, the central axis defined by the outer peripheral surface of the take-up bobbin 22 and the rotation axis of the take-up bobbin 22 may deviate from each other. In this case, the outer peripheral surface of the take-up bobbin 22 intermittently contacts the outer peripheral surface of the touch roller 29, and the peripheral speed of the touch roller 29 does not increase. Therefore, the posture determination unit 54 may determine that the take-up bobbin 22 is distorted when the peripheral speed of the touch roller does not exceed the predetermined value even after a lapse of a predetermined time.

The traverse device 70 is not limited to a configuration in which the thread 20 is traversed by reciprocating the traverse arm 74. For example, the traverse device 70 may be configured to traverse the thread 20 by reciprocating the thread guide portion 73 by driving a belt.

When the notification determination unit 55 determines that the contact posture is the notification target, the package drive control unit 58 may stop the winding of the thread 20. The notification instruction unit 56 may perform notification by changing the display mode of the display unit (notification unit) 92 in addition to the speaker 93 or instead of the speaker 93. Further, the notification unit 56 may perform notification by a notification unit (speaker, lamp, 7-segment display, display, etc.) provided in each winder unit 10.

The package peripheral speed acquisition unit 51 acquires the peripheral speed of the outer peripheral surface at the central position in the rotation axis direction as the peripheral speed at a predetermined position in the rotation axis direction in the package 30. The package peripheral speed acquisition unit 51 is not limited to this, and the package peripheral speed acquisition unit 51 is set at a predetermined position 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 in the package 30. The peripheral speed of the outer peripheral surface of the above may be acquired.

It is not essential for the winder unit 10 to perform notification based on the determination result of the contact posture. The winder unit 10 may only determine the contact posture, or may only store the determined contact posture and the identification information of the package 30 in association with each other. The contact posture of the notification target used by the notification determination unit 55 at the time of determination does not have to be a configuration that can be input by the setting unit 91. In this case, the notification determination unit 55 may use a preset contact posture as the contact posture of the notification target.

At least a part of the above-described embodiments and various modifications may be arbitrarily combined.

10 ... Winder unit (thread winder), 15 ... Photoelectric fixed length device (thread speed detector), 20 ... Thread, 22 ... Winding bobbin (bobbin), 23 ... Cradle, 29 ... Touch roller, 30 ... Package, 30a ... Large diameter side end, 30b ... Small diameter side end, 41 ... Package drive motor (drive unit), 51 ... Package peripheral speed acquisition unit, 52 ... Touch roller peripheral speed acquisition unit, 53 ... Touch determination unit, 54 ... Attitude determination unit, 55 ... Notification judgment unit, 56 ... Notification instruction unit (Notification unit), 70 ... Traverse device, 73 ... Thread guide unit, 91 ... Setting unit (Notification posture input unit), 92 ... Display unit (Notification unit) , 93 ... Speaker (notification unit), B1 ... First bobbin holding unit (holding unit).

Claims (10)

A thread winder that winds a thread around a cone-shaped bobbin to form a cone-shaped package.
A cradle that rotatably supports the bobbin by a bobbin holding portion that holds the bobbin,
A drive unit that is attached to the cradle and has a rotation shaft that is non-rotatably connected to the bobbin holding portion to rotate the bobbin by rotating the bobbin holding portion.
A touch roller that is driven to rotate as the package rotates by abutting on the outer peripheral surface of the package.
Package peripheral speed to acquire the large-diameter side package peripheral speed which is the peripheral speed at the large-diameter side end of the outer peripheral surface of the package and the small-diameter side package peripheral speed which is the peripheral speed at the small-diameter side end of the outer peripheral surface of the package. Acquisition department and
A touch roller peripheral speed acquisition unit that acquires the touch roller peripheral speed, which is the peripheral speed of the outer peripheral surface of the touch roller, and a touch roller peripheral speed acquisition unit.
A thread winder including a touch determination unit that determines that the package has come into contact with the touch roller when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side. The touch determination unit attaches the package to the touch roller when the state in which the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side continues for a predetermined determination time or longer. The thread winder according to claim 1, wherein it is determined that they have come into contact with each other. The package peripheral speed acquisition unit according to claim 1 or 2, wherein the package peripheral speed acquisition unit derives the large diameter side package peripheral speed and the small diameter side package peripheral speed by calculation based on the shape of the bobbin and the rotation speed of the package. Thread winder. A posture determination unit for determining the contact posture of the package that comes into contact with the touch roller is further provided.
The package peripheral speed acquisition unit further acquires the reference package peripheral speed, which is the peripheral speed of the outer peripheral surface of the package at a predetermined position in the rotation axis direction of the bobbin.
After the attitude determination unit determines that the package has come into contact with the touch roller by the touch determination unit, the attitude determination unit determines the contact attitude by comparing the reference package peripheral speed with the touch roller peripheral speed. The thread winder according to any one of claims 1 to 3 for determination. A traverse device that traverses the thread wound around the package by moving the thread guide portion on which the thread is hooked.
Further, a yarn speed detecting unit for detecting the yarn speed in the winding direction of the yarn wound by the package is provided.
The posture determination unit further determines that the package has come into contact with the touch roller by the touch determination unit, and then, based on the temporal change of the difference between the yarn speed and the peripheral speed of the touch roller, the posture determination unit is described. The thread winder according to claim 4, wherein the contact posture is determined. A notification determination unit that determines whether or not the contact posture determined by the attitude determination unit is a predetermined contact posture of a notification target, and a notification determination unit.
The thread winder according to claim 4 or 5, further comprising a notification unit that notifies when the notification determination unit determines that the contact posture is the notification target. A notification posture input unit for inputting the contact posture of the notification target is further provided.
The thread winder according to claim 6, wherein the notification determination unit uses the contact posture of the notification target input by the notification posture input unit as the contact posture of the notification target determined in advance. A cradle that rotatably supports the bobbin by a bobbin holder that holds a cone-shaped bobbin.
The bobbin is rotated by rotating the bobbin holding portion with a rotating shaft attached to the cradle and connected to the bobbin holding portion so as not to rotate relative to the bobbin holding portion. The drive unit that forms the package and
A contact determination method executed in a thread winder including a touch roller that is driven to rotate with the rotation of the package by abutting on the outer peripheral surface of the package.
Package peripheral speed to acquire the large-diameter side package peripheral speed which is the peripheral speed at the large-diameter side end of the outer peripheral surface of the package and the small-diameter side package peripheral speed which is the peripheral speed at the small-diameter side end of the outer peripheral surface of the package. Acquisition step and
A touch roller peripheral speed acquisition step for acquiring the touch roller peripheral speed, which is the peripheral speed of the outer peripheral surface of the touch roller,
A contact determination method including a touch determination step of determining that the package has come into contact with the touch roller when the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the package on the small diameter side and equal to or less than the peripheral speed of the package on the large diameter side. A bobbin installation step of holding the bobbin in the bobbin holding portion is further included so that a gap is provided between the outer peripheral surface of the bobbin and the outer peripheral surface of the touch roller.
According to claim 8, the thread winder drives the drive unit to start winding the thread in a state where a gap is provided between the outer peripheral surface of the bobbin and the outer peripheral surface of the touch roller. The contact determination method described. A cradle that rotatably supports the bobbin by a bobbin holder that holds a cone-shaped bobbin.
The bobbin is rotated by rotating the bobbin holding portion with a rotating shaft attached to the cradle and connected to the bobbin holding portion so as not to rotate relative to the bobbin holding portion. The drive unit that forms the package and
In a thread winder including a touch roller that is driven to rotate with the rotation of the package by abutting on the outer peripheral surface of the package.
Package peripheral speed to acquire the large-diameter side package peripheral speed which is the peripheral speed at the large-diameter side end of the outer peripheral surface of the package and the small-diameter side package peripheral speed which is the peripheral speed at the small-diameter side end of the outer peripheral surface of the package. Acquisition process and
The touch roller peripheral speed acquisition process for acquiring the touch roller peripheral speed, which is the peripheral speed of the outer peripheral surface of the touch roller, and the touch roller peripheral speed acquisition process.
When the peripheral speed of the touch roller is equal to or greater than the peripheral speed of the small-diameter package and equal to or less than the peripheral speed of the large-diameter package, the computer is made to execute a touch determination process for determining that the package has come into contact with the touch roller. Contact judgment program.

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