JP2016011176A - Yarn winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winder capable of tearing off a yarn end from a package.SOLUTION: A winder unit comprises: a cradle for holding a package; a contact roller that can come into contact with the surface of the package; an air cylinder for moving the package between a contact position in contact with the contact roller and a non-contact position separating from the contact roller; and a package drive motor for rotating the package. The package drive motor performs a normal rotation which rotates the package in a winding direction for a set period α in a lift-up state where the package having a yarn end is separated from the contact roller.

Description

  The present invention relates to a yarn winding machine.

  As a conventional yarn winding machine, for example, a yarn winding machine described in Patent Document 1 is known. In the yarn winding machine described in Patent Document 1, when the yarn is cut during the yarn winding operation, the package is separated from the touch roller by the moving unit, and the package is rotated in the direction opposite to the winding direction by the package driving unit. Is rotated to. Then, the yarn end (yarn end of the package) connected to the package is caught by the yarn end catching portion and delivered to the splicer device, and this yarn end is joined with the yarn end of the yarn from the yarn feeding bobbin.

JP 2012-218922 A

  In the yarn winding machine as described above, when the yarn is cut, the yarn end of the package may stick to the package depending on, for example, the material of the yarn and / or the amount of fluff. As a result, it is difficult to catch the yarn end by the yarn end catching portion, and as a result, the draw-out rate of the yarn end may be lowered.

  Then, an object of this invention is to provide the yarn winding machine which can peel off the yarn end from a package.

  The yarn winding machine of the present invention includes a holding unit that holds the package, a touch roller that can contact the surface of the package, and a moving unit that moves the package between a position that contacts the touch roller and a position that moves away from the touch roller. A package driving unit that rotationally drives the package, and the package driving unit winds the package for a set setting period in a separated state in which the package having the yarn end is separated from the touch roller by the moving unit. Rotate forward to rotate.

  In this yarn winding machine, a set period for forward rotation of the package having the yarn end in the separated state is set. For example, when the yarn is cut, the package is rotated in the forward direction for the set period in the separated state. be able to. As a result, the yarn end can be peeled off from the package by the centrifugal force of rotation in the forward rotation.

  In the yarn winding machine of the present invention, the package driving unit can rotate the package by the first rotation speed when winding the yarn on the package and the second rotation speed when performing normal rotation during the set period in the separated state. The first rotation speed and the second rotation speed may be different from each other. As a result, the package can be rotated at a rotation speed suitable for each of the winding and forward rotation.

  In the yarn winding machine of the present invention, the package driving unit may change at least one of the setting period and the second rotation speed according to the diameter of the package. The ease of sticking of the yarn end differs depending on the size of the package, but the above effect of peeling off the yarn end from the package by the centrifugal force of rotation can be controlled according to the ease of sticking of the yarn end. Become.

  The yarn winding machine of the present invention includes a determination unit that determines whether or not to perform normal rotation during a set period in the separated state based on the diameter of the package, and the package driving unit, according to the determination result of the determination unit, You may perform normal rotation for a set period in the separated state. Although the ease of sticking of the yarn end varies depending on the size of the package diameter, the presence or absence of the forward rotation can be controlled according to the ease of sticking of the yarn end.

  In the yarn winding machine of the present invention, the package driving unit may perform normal rotation during a set period in the separated state so that the peripheral speed of the package is constant regardless of the diameter of the package. Thereby, it is possible to stably realize the above-described effect of peeling the yarn end from the package by the centrifugal force of rotation.

  In the yarn winding machine of the present invention, the package driving unit may perform normal rotation during a set period in the separated state so that the peripheral speed of the package becomes a speed according to the diameter of the package. Thereby, the force acting on the yarn end can be made constant, and the force for peeling the yarn end from the package can be stabilized.

  The yarn winding machine of the present invention may further include a yarn catching portion that catches the yarn end. In this case, the yarn end peeled off from the package can be captured by the yarn capturing unit.

  In the yarn winding machine of the present invention, the package driving unit may perform reverse rotation for rotating the package in a direction opposite to the winding direction in the separated state after performing normal rotation for a set period in the separated state. Thereby, it is possible to further peel off the yarn end from the package.

  In the yarn winding machine of the present invention, the package driving unit is rotated in the forward direction for a set period in the separated state, and after the package is brought into contact with the touch roller by the moving unit, the package is moved in the direction opposite to the winding direction. You may perform reverse rotation to rotate. Thereby, for example, when the yarn end of the package is captured by the yarn catching portion, the distance between the yarn catching portion and the package can be stabilized.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the yarn winding machine which can peel off the yarn end from a package.

It is a schematic diagram of the automatic winder provided with the winder unit which concerns on one Embodiment of this invention. It is the schematic diagram and block diagram which showed the schematic structure of the winder unit. It is a left view which expands and shows the vicinity of the traverse apparatus of a winder unit. It is a right view which expands and shows the cradle vicinity of a winder unit. It is a left view which shows the package which moves to a non-contact position and a contact position. It is a chart figure which shows an example of operation | movement of a winder unit. It is a chart figure which shows another example of operation | movement of a winder unit.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

  First, an overall configuration of an automatic winder 1 including a winder unit (yarn winding machine) 10 according to the present embodiment will be described with reference to FIG. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the yarn when 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 doffing device 80, and a machine base control device 90 as main components. Each winder unit 10 is configured such that a package (winding package) 30 can be formed by winding the yarn 20 unwound from the yarn supplying bobbin 21 while traversing.

  The automatic doffing device 80 travels to the position of the winder unit 10 when the package 30 becomes full in each winder unit 10, discharges the full package 30 from the winder unit 10, and An empty bobbin can be supplied to the unit 10.

  The machine base control device 90 includes a setting unit 91 and a display unit 92 as main components. The setting unit 91 can make settings for each winder unit 10 by an operator inputting a predetermined set value or selecting an appropriate control method. The display unit 92 is configured to be able to display the winding state of the yarn 20 of each winder unit 10 and the content of the trouble that has occurred. The display unit 92 may be configured by a touch panel, and the setting unit 91 may be included in the display unit 92.

  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 16 and a unit control unit 50 as main components.

  The unit controller 50 includes, for example, a CPU, a RAM, a ROM, an I / O port, and a communication port. In the ROM, a program for controlling each component of the winding unit main body 16 is recorded. The I / O port and the communication port are connected to each part (details will be described later) included in the winding unit main body 16 and a machine base control device 90 so that control information and the like can be communicated. Thereby, the unit control part 50 can control operation | movement of each part with which the winding unit main body 16 is provided.

  The winding unit main body 16 includes a yarn unwinding auxiliary device 12, a tension applying device 13, , A splicer device (yarn splicing device) 14 and a yarn monitoring device 15.

  A yarn supplying section 11 is provided at the lower part of the winding unit main body 16. The yarn supplying section 11 is configured so that the yarn supplying bobbin 21 conveyed by a bobbin conveying system (not shown) can be held at a predetermined position.

  The yarn unwinding assisting device 12 lowers the regulating member 40 covering the core pipe of the yarn supplying bobbin 21 in conjunction with the unwinding of the yarn 20 from the yarn supplying bobbin 21, so that the yarn 20 from the yarn supplying bobbin 21 is lowered. Assist with unraveling. The regulating member 40 contacts the balloon of the yarn 20 formed on the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn 20 unwound from the yarn feeding bobbin 21, and controls the balloon of the yarn 20 to an appropriate size. This assists in unwinding the yarn 20. A sensor (not shown) for detecting the chase portion of the yarn feeding bobbin 21 is provided in the vicinity of the regulating member 40. When this sensor detects the descent of the chase portion, the yarn unwinding assisting device 12 follows the descent of the chase portion and lowers the regulating member 40 by, for example, an air cylinder (not shown).

  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 can be rotated by a rotary solenoid so that the comb teeth are in a meshed state or a released state. The tension applying device 13 may be, for example, a disc type other than the gate type.

  The splicer device 14 includes a bobbin thread from the yarn feeding bobbin 21 and a package 30 when the yarn monitoring device 15 detects a yarn defect and performs yarn cutting or when the yarn breakage occurs during unwinding from the yarn feeding bobbin 21. The upper thread from is spliced. As such a yarn joining device for joining the upper yarn and the lower yarn, a mechanical knotter, a device using a fluid such as compressed air, or the like can be used.

  The yarn monitoring device 15 includes a head 49 in which an unillustrated sensor for detecting the thickness of the yarn 20 is disposed, and an analyzer 52 that processes a yarn thickness signal from the sensor. The yarn monitoring device 15 is configured to detect a yarn defect such as a slab by monitoring a yarn thickness signal from the sensor. A cutter 39 for cutting the yarn 20 immediately when the yarn monitoring device 15 detects a yarn defect is provided in the vicinity of the head 49.

  A lower thread catching member 25 that catches the yarn end of the lower thread and guides it to the splicer apparatus 14 is provided below the splicer device 14. Above the splicer device 14, an upper yarn catching member 26 that catches the yarn end of the upper yarn and guides it to the splicer device 14 is provided. 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 yarn catching member 26 includes an upper yarn pipe arm 36 and an upper yarn suction port (yarn catching portion) 35 formed at the tip of the upper yarn pipe arm 36.

  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. An appropriate negative pressure source is 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 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 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 each provided with a shutter (not shown) on the base end side. 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.

  The winding unit main body 16 includes a cradle (holding portion) 23 that detachably supports the winding bobbin 22, a contact roller 29 that can rotate in contact with the peripheral surface of the winding bobbin 22 or the peripheral surface of the package 30, It has. The winding unit main body 16 includes an arm-type traverse device 70 for traversing the yarn 20 in the vicinity of the cradle 23. The traverse device 70 winds the yarn 20 around the package 30 while traversing the yarn 20. Is possible. A guide plate 28 is provided slightly upstream of the traverse portion. The guide plate 28 guides the upstream yarn 20 to a traverse location. A ceramic traverse fulcrum portion 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.

  The cradle 23 is configured to be rotatable about a rotation shaft 48. The cradle 23 absorbs the increase in the yarn layer diameter of the package 30 due to the winding of the yarn 20 onto the winding bobbin 22 as the cradle 23 rotates. The cradle 23 is provided with a rotation speed sensor 24 that measures the rotation speed of the package 30.

  The cradle 23 is attached with a package drive motor (package drive unit) 41 composed of a servo motor. The package drive motor 41 rotates the winding bobbin 22 to wind the yarn 20 around the winding bobbin 22. The package drive motor 41 can be rotationally driven by normal rotation (hereinafter simply referred to as “normal rotation”) that rotates the package 30 (the winding bobbin 22) in the winding direction. Further, the package drive motor 41 can be driven to rotate by reverse rotation (hereinafter simply referred to as “reverse rotation”) that rotates the package 30 in the opposite winding direction to the winding direction. When the winding bobbin 22 is supported by the cradle 23, the motor shaft of the package driving motor 41 is connected to the winding bobbin 22 so as not to be relatively rotatable (so-called direct drive system).

  The operation of the package drive motor 41 is controlled by the package drive control unit 42. The package drive control unit 42 controls the operation and stop of the package drive motor 41 in response to the operation signal from the unit control unit 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 employed.

  An angle sensor 44 for detecting the angle of the cradle 23 is attached to the rotation shaft 48. The angle sensor 44 is composed of, for example, a rotary encoder, and transmits an angle signal corresponding to the angle of the cradle 23 to the unit controller 50. Since the angle of the cradle 23 changes as the package 30 gets thicker, the diameter of the package 30 can be detected by detecting the rotation angle of the cradle 23 by the angle sensor 44. As a method for detecting the diameter of the package 30, in addition to the angle sensor 44, an appropriate configuration can be used as long as the diameter of the package 30 can be detected, such as a device using a Hall IC or an absolute encoder. .

  As a method of detecting the diameter of the package 30, for example, a method of detecting based on the total length of the yarn 20 wound around the package 30, the winding speed of the yarn 20, and the type (thickness, etc.) of the yarn 20 can be given. It is done. As a method for detecting the diameter of the package 30, a method of measuring the time from the start of winding the yarn 20 onto the package 30 may be used. Specifically, the winding speed of the yarn 20 and the type (thickness, etc.) of the yarn 20 are grasped, and the relationship between the elapsed time from the winding start of the yarn 20 and the diameter of the package 30 is preliminarily determined. The diameter of the package 30 can be calculated based on the elapsed time.

  As a method for detecting the diameter of the package 30, a method based on the traveling speed of the yarn 20 in the yarn traveling path between the yarn feeding bobbin 21 and the contact roller 29 may be used. Specifically, a yarn monitoring device or a dedicated yarn speed sensor is provided in the yarn traveling path, and the traveling speed of the yarn 20 is detected. The unit control unit 50 calculates the traverse angle based on the traveling speed and traverse speed of the yarn 20, and calculates the peripheral speed of the package 30 from the traverse angle and the yarn traveling speed. The diameter of the package 30 can be calculated based on the rotational speed of the package 30 and the peripheral speed of the package 30. When the diameter of the package 30 is calculated and obtained, the configuration for detecting the angle of the cradle 23 such as the angle sensor 44 may be omitted.

  As shown in FIG. 3, the traverse device 70 includes a traverse drive motor 76, an output shaft 77, and a traverse arm 74. In FIG. 3, the contact roller 29 is viewed in the axial direction. 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.

  The traverse drive motor 76 is a motor that drives the traverse arm 74, and includes a servo motor or the like. The operation of the traverse drive motor 76 is controlled by a traverse control unit 78 as shown in FIG. The traverse drive motor 76 may be another motor such as a step motor or a voice coil motor.

  The traverse control unit 78 is configured by hardware or the like using a dedicated microprocessor, and controls the operation and stop of the traverse drive motor 76 in response to a signal from the unit control unit 50. 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 shown in FIG. As the rotor of the traverse drive motor 76 rotates in the forward and reverse directions, the traverse arm 74 performs a reciprocating swivel motion in a direction perpendicular to the paper surface of FIG. In addition, the traverse arm 74 in FIG. 3 has shown the position in the edge part of a traverse.

  A hook-shaped thread guide portion 73 is formed at the tip of the traverse arm 74. The traverse arm 74 can guide the yarn 20 by the yarn guide portion 73. The yarn 20 can be traversed by the traverse arm 74 reciprocatingly turning in a state where the yarn guide portion 73 guides the yarn 20.

  Next, the configuration of the cradle 23 will be described in more detail with reference to FIGS. 4 and 5. As shown in FIG. 4, the winding unit main body 16 has a rotating plate 17 that can rotate around a rotating shaft 48. The cradle 23 is configured to rotate integrally with the rotating plate 17 around the rotation shaft 48. A spring 18 configured as a tension spring for gradually decreasing the contact pressure and an air cylinder 60 are connected to the rotating plate 17. A predetermined rotational torque can be applied to the cradle 23 by the spring 18 and the air cylinder 60.

  The air cylinder (moving part) 60 is configured as a double acting cylinder having a piston 601 therein. In FIG. 4, compressed air of air pressure P1 is in the cylinder chamber on the right side of the piston 601 (closer to the rotating plate 17), and compressed air of air pressure P2 is in the cylinder chamber on the left side of the piston 601 (side far from the rotating plate 17). Each is supplied with compressed air.

  An electropneumatic regulator 61 is connected to a pipe for supplying compressed air of air pressure P2 to the air cylinder 60. The electropneumatic regulator 61 can adjust the air pressure P2 steplessly. Control of the air pressure P <b> 2 by the electropneumatic regulator 61 is performed based on a control signal input from the unit controller 50.

  When the air pressure P2 is reduced in the configuration of FIG. 4, the force with which the air cylinder 60 pulls the cradle 23 increases, so that the torque for rotating the cradle 23 to the front side of the winding unit body 16 around the rotation shaft 48 is increased. Increase. Since the contact roller 29 is disposed on the front side of the winding unit main body 16 with respect to the rotating shaft 48, the contact pressure between the package 30 and the contact roller 29 can be increased by reducing the air pressure P2. On the contrary, if the air pressure P2 is increased, the force with which the air cylinder 60 pulls the cradle 23 is weakened, so that the torque for rotating the cradle 23 to the back side of the winding unit body 16 around the rotation shaft 48 increases. Thereby, the contact pressure between the package 30 and the contact roller 29 can be weakened. The package 30 can be separated from the surface of the contact roller 29 by further increasing the air pressure P2.

  Based on the above configuration, the air cylinder 60 can move the package 30 by moving the cradle 23. Thereby, as shown in FIG. 5, the position of the package 30 is switched between a position away from the contact roller 29 (non-contact position Q1) and a position in contact with the contact roller 29 (contact position Q2).

  Returning to FIG. 2, the unit control unit 50 of the present embodiment transmits a drive signal to the package drive control unit 42 to control the rotational drive of the package drive motor 41. Specifically, the unit control unit 50 has generated a yarn break (hereinafter referred to as “yarn cut or the like”) during yarn cutting performed by the yarn monitoring device 15 detecting a yarn defect or unwinding from the yarn feeding bobbin 21. In this case, the package 30 in the separated state (lifted-up state) that is lifted up to the non-contact position Q1 and separated from the contact roller 29 is rotated in the normal direction for rotating in the winding direction for a set period of time (details). , Described later).

  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 the movement of the package 30 between the non-contact position Q1 and the contact position Q2 by controlling the drive of the air cylinder 60 to move the cradle 23 (see FIGS. 4 and 5). The unit control unit 50 controls the opening and closing of shutters provided in the lower thread pipe arm 33 and the upper thread pipe arm 36, and controls the stop and generation of the suction flow from the lower thread suction port 32 and the upper thread suction port 35. .

  In the winder unit 10 described above, when yarn cutting or the like occurs, it is necessary to splice the lower yarn and the upper yarn with the splicer device 14. In splicing, it is necessary to catch the lower thread at the lower thread suction port 32 and to catch and pull the upper thread at the upper thread suction port 35. Hereinafter, a control and a drawing method of the upper yarn drawing operation performed by the winder unit 10 when yarn cutting or the like occurs will be described in detail with reference to FIGS. 2 and 4 to 6.

  In FIG. 6, the horizontal axis indicates time, and the vertical axis indicates ON / OFF of each signal sent from the unit controller 50 (the same applies in FIG. 7 described later). The lift-up signal is a signal for driving the air cylinder 64 by the electropneumatic regulator 61 to lift the package 30 to the non-contact position Q1. The normal rotation signal is a signal for causing the package drive motor 41 to rotate the package 30 in the normal direction. The reverse rotation signal is a signal for rotating the package 30 in the reverse direction by the package drive motor 41. The upper thread catching member driving signal is a signal for driving the upper thread catching member 26 and rotating the upper thread pipe arm 36 so that the upper thread suction port 35 approaches the package 30. The shutter open signal is a signal for generating a suction flow from the upper thread suction port 35 with the shutter of the upper thread pipe arm 36 opened.

  First, during the winding operation before yarn cutting or the like occurs, the lift-up signal is turned OFF, and the surface of the package 30 is in contact with the contact roller 29. Further, the forward rotation signal is turned ON, and the package 30 is rotated forward by the package drive motor 41. During the winding operation, the package drive motor 41 is controlled by the unit controller 50, and the rotational speed of the package 30 is set to the first rotational speed.

  When yarn cutting or the like occurs during the winding operation, the forward rotation signal is turned OFF and the forward rotation of the package 30 is decelerated and stopped (time t0). As a factor such as yarn cutting, for example, (A) the yarn monitoring device 15 detects a yarn defect during a regular winding period in which the yarn 20 is wound around the package 30 at a set winding speed, and the yarn 20 is removed by the cutter 39. When cut, (B) When the yarn 20 is cut by excessive tension or the like without using the cutter 39 during the regular winding period, (C) until the rotation of the package 30 reaches the set winding speed. When the yarn monitoring device 15 detects an abnormality of the yarn 20 and the cutter 39 cuts the yarn 20 during the accelerated winding period, the yarn 20 unwound from the yarn feeding bobbin 21 is broken. For example, a new yarn feeding bobbin 21 is set in the yarn feeding unit 11.

  At time t1, the lift-up signal is turned ON, the package 30 is lifted up to the non-contact position Q1, and the contact between the package 30 and the contact roller 29 is released.

  At time t2, the forward rotation signal is turned ON, and the package 30 is rotated forward in the lift-up state in which the package 30 is lifted up to the non-contact position Q1 (the release state in which the contact between the package 30 and the contact roller 29 is released). Rotation starts. During the set period α (that is, from time t2 to time t3), the forward rotation signal is maintained in the ON state, and the forward rotation of the package 30 in the lift-up state is performed. At time t3, the forward rotation signal is turned OFF, and the forward rotation of the package 30 is decelerated and stopped.

  At the time of forward rotation of the package 30 in the set period α, the unit drive unit 41 is controlled by the unit controller 50, and the rotational speed of the package 30 is set to the second rotational speed. The second rotation speed is a speed different from the first rotation speed, and here, the second rotation speed is faster than the first rotation speed.

  The setting period α and the second rotation speed are set in the unit controller 50. The set period α and the second rotation speed may be constant values, or may be set according to the diameter of the package 30 at the time of occurrence of yarn cutting or the like. For example, when the diameter of the package 30 is large, the yarn end 30a is easily peeled off from the surface of the package 30, so that the setting period α can be set short and / or the second rotation speed can be set low. For example, when the diameter of the package 30 is small, the yarn end 30a is difficult to peel off from the surface of the package 30, so that the setting period α can be set longer and / or the second rotation speed can be set faster. The second rotation speed may include a plurality of different speeds. For example, the second rotation speed may be set so that the speed increases from the middle of the forward rotation (at a certain time).

  The second rotational speed may be set so that the peripheral speed of the package 30 (the traveling speed of the yarn 20) is constant regardless of the diameter of the package 30. In other words, the package drive motor 41 may perform forward rotation α during the set period in the lift-up state so that the peripheral speed of the package 30 is constant regardless of the diameter of the package 30. The second rotation speed may be set so that the peripheral speed of the package 30 changes according to the diameter of the package 30. In other words, the package drive motor 41 may perform forward rotation α during the set period in the lift-up state so that the peripheral speed of the package 30 becomes a speed corresponding to the diameter of the package 30.

  At time 4, the upper thread catching member drive signal is turned ON, the upper thread pipe arm 36 is rotated so that the upper thread suction port 35 approaches the package 30, and the upper thread suction port 35 moves to the yarn end catching position. . At time t4, the shutter open signal is turned ON, the shutter of the upper thread pipe arm 36 is opened, and a suction flow is generated from the upper thread suction port 35. At time t5, the reverse rotation signal is turned ON, and the reverse rotation of the package 30 is started in the lift-up state. As a result, the yarn end 30 a of the package 30 that rotates backward in the lift-up state can be sucked and captured by the upper yarn suction port 35.

  At time t6, the lift-up signal is turned OFF, and the package 30 is moved to the contact position Q2 where it contacts the contact roller 29. As a result, the yarn end 30 a of the package 30 that rotates in the reverse direction while being in the contact position Q <b> 2 can be sucked and captured by the upper yarn suction port 35 located near the surface of the package 30.

  At time t7, the upper thread catching member drive signal is turned OFF, and the upper thread suction port 35 moves toward the yarn joining position. As a result, the yarn end 30a of the package 30 is guided to the splicer device 14. In the splicer device 14, the lower yarn captured at the lower yarn suction port 32 and the upper yarn captured at the upper yarn suction port 35 are spliced. Be started. At time t8, the reverse rotation signal is turned OFF, and the reverse rotation of the package 30 is decelerated and stopped. At time t9 corresponding to the completion of yarn joining, the shutter open signal is turned OFF, the shutter of the upper yarn pipe arm 36 is closed, and the suction flow from the upper yarn suction port 35 is stopped.

  As described above, in the winder unit 10 of the present embodiment, the set period for rotating the package 30 having the yarn end 30a in the normal rotation in the lift-up state is set, and when yarn cutting or the like occurs, the lift-up state The package 30 can be rotated forward by adding the set period α. As a result, the yarn end 30a can be peeled off from the package 30 with the centrifugal force of rotation when rotating forward. As a result, it is possible to improve the pull-out rate of the upper thread when capturing the upper thread.

  The package drive motor 41 can rotate the package 30 based on the first rotation speed during the winding operation of the package 30 and the second rotation speed when the package 30 is rotated in the forward rotation α for the set period in the lift-up state. The first rotation speed and the second rotation speed are different from each other. Thereby, the package 30 can be rotated at a rotation speed suitable for each of the winding operation of the package 30 and the forward rotation in the lift-up state. In particular, the second rotation speed is higher than the first rotation speed, and the yarn end 30a can be further peeled off from the package 30.

  In the package drive motor 41, at least one of the setting period α and the second rotation speed can be changed according to the diameter of the package 30. The ease of sticking of the yarn end 30a differs depending on the diameter of the package 30, but the above effect of peeling the yarn end 30a from the package 30 by the centrifugal force of rotation is controlled according to the ease of sticking of the yarn end 30a. can do. It is also possible to adjust the load applied to the package drive motor 41 depending on the size of the package 30.

  In particular, when the diameter of the package 30 is large, the setting period α can be set short and / or the second rotation speed can be set low, so that the safety at the time of peeling off the yarn end 30a can be improved. In the case where the diameter of the package 30 where the yarn end 30a is easily stuck is small, the setting period α can be set long and / or the second rotation speed can be set high. The yarn end 30a can be further peeled off by increasing the centrifugal force.

  The package drive motor 41 can perform forward rotation α during the set period in the lift-up state so that the peripheral speed of the package 30 is constant regardless of the diameter of the package 30. Thereby, it is possible to stably realize the above-described effect of peeling the yarn end 30a from the package 30 by the centrifugal force of rotation. The burden on the cradle 23 due to the forward rotation can be reduced, and damage to the cradle 23 can be suppressed.

  In the package drive motor 41, it is possible to perform normal rotation during the set period α in the lift-up state so that the peripheral speed of the package 30 is a speed corresponding to the diameter of the package 30. Thereby, the force acting on the yarn end 30a can be made constant, and the force for peeling the yarn end 30a from the package 30 can be stabilized.

  The winder unit 10 includes an upper thread suction port 35 that captures the thread end 30a. In the winder unit 10, the yarn end 30 a can be peeled off from the package 30, so that the yarn end 30 a can be reliably captured by the upper yarn suction port 35. As a result, it is possible to suppress the occurrence of an upper thread drawing error.

  The package drive motor 41 rotates the package 30 in the reverse direction in the lift-up state after rotating the package 30 in the lift-up state for the set period α. Thereby, the yarn end 30a can be further peeled off from the package 30.

  FIG. 7 is a chart showing another example of the operation of the winder unit 10. As shown in FIG. 7, when yarn cutting or the like occurs during the winding operation, the forward rotation signal is not turned OFF, and the forward rotation of the package 30 may not be decelerated and stopped. Specifically, with the forward rotation of the package 30 continuing, the lift-up signal is turned ON at time t1, the package 30 is lifted up to the non-contact position Q1, and the package 30 and the contact roller 29 are Contact is released. At this time, the set period α ′ set in the unit controller 50 is from time t1 to time t3 when the forward rotation signal is turned OFF.

  In this example, after the occurrence of yarn cutting or the like and until time t1 when the package 30 is lifted up, the rotation speed of the package 30 is kept constant and the forward rotation is continued. However, the forward rotation may be continued while the package 30 is decelerated at a deceleration that does not stop.

  As shown in FIG. 7, at time t6 ′ (that is, after time t3 when the forward rotation signal is turned off and before time t4 when the upper thread catching member driving signal and the shutter opening signal are turned on). In some cases, the lift-up signal is turned OFF and the package 30 is moved to the contact position Q2. In this case, the package drive motor 41 rotates the package 30 in the reverse rotation after the package 30 is moved to the contact position Q2 after rotating the package 30 in the lift-up state for the set period α. Thereby, when the yarn end 30a is captured by the upper yarn suction port 35 at times t4 to t7, the distance between the upper yarn suction port 35 and the package 30 can be stabilized.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. In the above embodiment, the package 30 is directly driven to rotate by the package drive motor 41. However, in the present invention, the package 30 may be driven by rotating the contact roller.

  The unit control unit 50 of the above embodiment may determine whether or not to rotate the package 30 in the lifted-up state for the set period α forward rotation based on the diameter of the package 30. The package drive motor 41 may rotate the package 30 in the forward direction α in the lifted-up state according to the determination result by the unit controller 50. Although the ease of sticking of the yarn end 30a differs depending on the size of the package 30, the presence or absence of the forward rotation can be controlled according to the ease of sticking of the yarn end 30a. When yarn cutting or the like occurs, there is no need to always perform forward rotation of the package 30 in the lifted-up state, and a reduction in production efficiency can be suppressed.

  For example, the unit controller 50 determines that the package 30 is rotated in the normal rotation direction α only when the diameter of the package 30 is equal to or smaller than the first set diameter, and the package drive motor 41 determines that the diameter of the package 30 is the first set diameter. Only in the following cases, the package 30 may be rotated forward in the set period α in the lift-up state. In this case, if the diameter of the package 30 is larger than the first set diameter, the package 30 is not rotated in the normal rotation direction α during the lift-up state, and a normal upper thread drawing operation is performed. Thereby, for example, the yarn end 30a can be positively peeled off from the package 30 only when the diameter of the package 30 is small and the yarn end 30a easily sticks to the package 30. The unit control unit 50 at this time constitutes a determination unit.

  When yarn cutting or the like occurs, first, a normal upper yarn drawing operation (drawing operation in which the package 30 is not rotated in the forward direction α in the lifted-up state) is performed to perform yarn splicing. Only when the upper thread is not detected by the monitoring device 15 (when an upper thread is caught by the upper thread suction port 35), the above-described drawing operation illustrated in FIGS. 5 and 6 may be performed. Thereby, when yarn cutting or the like occurs, it is not necessary to always perform forward rotation of the package 30 in the lift-up state, and it is possible to suppress a decrease in production efficiency.

  In the above embodiment, the package drive control unit 42, the traverse control unit 78, and the unit control unit 50 are provided separately, but at least a part of these control units may be integrated. In the said embodiment, the structure which moves the package 30 between the non-contact position Q1 and the contact position Q2 by the air cylinder 60 was illustrated. However, the package 30 may be configured to move between the non-contact position Q1 and the contact position Q2 by a step motor or the like. In the above embodiment, the unit controller 50 controls the opening and closing operation of the shutter to control the stop and generation of the suction flow from the upper thread suction port 35. However, the shutter may be always open. In this case, for example, the control of the unit controller 50 can be simplified.

  In the above embodiment, in the lift-up state, the package 30 may be rotated once in the reverse direction and then rotated in the normal direction α for the set period. In this case, the yarn end 30a can be easily peeled off from the package 30. In the above embodiment, the electropneumatic regulator 61 may be omitted, and the package 30 may be lifted up only by turning on / off the air supply to the air cylinder 60. In the above embodiment, in the lift-up state, the package 30 may be rotated in reverse at a set speed for a set time and at a rotational speed at which the yarn end 30a can be peeled off. Even in this case, the above-described effect is achieved that the yarn end 30a can be peeled off from the package 30.

  DESCRIPTION OF SYMBOLS 10 ... Winder unit (yarn winding machine), 23 ... Cradle (holding part), 29 ... Contact roller (touch roller), 30 ... Package, 30a ... Yarn end, 35 ... Upper thread suction port (yarn catching part), 41 ... Package drive motor (package drive unit), 50... Unit control unit (determining unit), 60... Air cylinder (moving unit), Q1... Non-contact position (separated position), Q2 ... Contact position (contact position), α , Α ′: Setting period.

Claims (9)

A holding part for holding the package;
A touch roller capable of contacting the surface of the package;
A moving unit that moves the package between a position contacting the touch roller and a position separating the touch roller;
A package drive unit that rotationally drives the package,
The package driver is
A yarn winding machine that performs forward rotation for rotating the package in a winding direction for a set time period in a separated state in which the package having a yarn end is separated from the touch roller by the moving unit. The package driving unit is capable of rotating the package by a first rotation speed when winding the yarn around the package and a second rotation speed when performing the normal rotation during the set period in the separated state. ,
The yarn winding machine according to claim 1, wherein the first rotation speed and the second rotation speed are different from each other.   The yarn winding machine according to claim 2, wherein the package driving unit changes at least one of the set period and the second rotation speed in accordance with a diameter of the package. A determination unit that determines whether to perform the normal rotation for the set period in the separated state based on the diameter of the package;
The said package drive part is a yarn winding machine as described in any one of Claims 1-3 which performs the said normal rotation for the said setting period in the said separation state according to the determination result of the said determination part.   The said package drive part performs the said normal rotation for the said setting period in the said separation state so that the peripheral speed of the said package may become constant irrespective of the diameter of the said package. The yarn winding machine described.   The said package drive part performs the said normal rotation for the said setting period in the said separation state so that the peripheral speed of the said package may become a speed according to the diameter of the said package. The yarn winding machine described.   The yarn winding machine according to any one of claims 1 to 6, further comprising a yarn catching portion that catches the yarn end.   The said package drive part performs the reverse rotation which rotates the said package to the opposite direction of a winding direction in the said separation state after performing the said normal rotation for the said setting period in the said separation state. A yarn winder according to claim 1. The package driving unit is configured to move the package in a direction opposite to the winding direction after performing the forward rotation for the set period in the separated state and after the package is brought into contact with the touch roller by the moving unit. The yarn winding machine according to any one of claims 1 to 7, wherein the yarn winding machine performs reverse rotation for rotation.

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