JP2011105460A - Yarn winder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn winder accurately obtaining the amount of a yarn wound around a yarn supply bobbin by detecting the length of a core tube of the yarn supply bobbin. <P>SOLUTION: An automatic winder includes a yarn supply bobbin holding part, a winding part 17, and a core tube detecting sensor 81. A yarn supply bobbin 21 in which a yarn is wound around a core tube 95 is set to the yarn supply bobbin holding part. The winding part 17 winds the yarn drawn out of the yarn supply bobbin 21 onto a package 30. The core tube detecting sensor 81 detects the length of the core tube of the yarn supply bobbin 21 set to the yarn supply bobbin holding part. The automatic winder further includes a stepping motor 79 and a calculation part 87. The stepping motor 79 is adapted to move the core tube detecting sensor 81 in the longitudinal direction of the core tube 95 and control the moving distance of the core tube detecting sensor 81. The calculation part 87 calculates the length of the core tube based on the moving distance of the core tube detecting sensor 81 moved by the stepping motor 79. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a configuration for detecting a core tube length of a yarn supplying bobbin supplied to a yarn winding machine.

  Conventionally, the remaining yarn amount of the yarn feeding bobbin is calculated by subtracting the winding yarn amount wound around the package by the winding unit from the winding yarn amount of the yarn feeding bobbin at the start of winding. A configuration of a yarn winding machine that controls each unit in accordance with the amount is known. Patent Document 1 and Patent Document 2 disclose this type of yarn winding machine. Patent Document 1 discloses a configuration in which the unwinding assist device is controlled based on the remaining yarn amount of the yarn feeding bobbin. Patent Document 2 discloses a configuration in which the tension applying device is controlled based on the remaining yarn amount of the yarn feeding bobbin.

  Patent Document 3 discloses a configuration that includes a sensor for detecting the remaining yarn amount of the yarn supplying bobbin and calculates the remaining yarn amount based on a detection signal of the sensor. Patent Document 3 discloses a configuration that generates a signal when the yarn amount of a yarn supplying bobbin becomes a predetermined amount or less.

JP-A-5-78016 JP 2003-2540 A JP-A-1-231769

  In the configurations of Patent Literature 1 and Patent Literature 2, in order to calculate the remaining yarn amount of the yarn feeding bobbin, it is necessary to input the yarn amount at the start of winding into the yarn winding machine in advance. However, the amount of yarn wound around the yarn supplying bobbin differs depending on the length of the core tube around which the yarn is wound. For this reason, when the type of the yarn feeding bobbin performing the winding operation (the length of the core tube) is changed, the set value of the winding yarn amount (core tube length) has to be changed. Also, when yarn feeding bobbins with different core tube lengths are supplied, or when the operator makes a mistake in the input value of the winding yarn amount, the winding yarn amount set in the yarn winding machine and the feeding yarn amount are set. There may be a large difference between the actual amount of yarn wound around the yarn bobbin. If each part is controlled based on the remaining yarn amount calculated in this state, the quality of the package may be adversely affected. In this regard, although the configuration of Patent Document 3 detects the actual remaining yarn amount with a sensor, the remaining yarn amount (wound yarn amount) at the start of the winding operation cannot be calculated. It was difficult to carry out fine control continuously.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to accurately acquire the amount of yarn wound around the yarn feeding bobbin by detecting the core tube length of the yarn feeding bobbin. An object of the present invention is to provide a yarn winding machine that can

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to an aspect of the present invention, a yarn winding machine configured as follows is provided. That is, the yarn winding machine includes a bobbin setting unit, a winding unit, and a core tube detection unit. A yarn feeding bobbin in which a yarn is wound around a core tube is set in the bobbin setting portion. The winding unit winds the yarn drawn from the yarn supplying bobbin around a package. The core tube detection unit detects a core tube length of the yarn feeding bobbin set in the bobbin setting unit.

  Thereby, since the core tube length of the yarn feeding bobbin can be detected by the core tube detection unit, it is possible to omit the trouble of inputting the set value of the core tube length to the yarn winding machine, and the burden on the operator can be reduced. Further, since the value obtained by actually measuring the length of the core tube is used for control, improper control is not performed due to an input error as compared with the conventional manual input.

  The yarn winding machine is preferably configured as follows. That is, the yarn winding machine includes a storage unit and an update unit. The storage unit stores the length of the core tube detected by the core tube detection unit. When the yarn feeding bobbin is set in the bobbin setting unit, the update unit updates the core tube length stored in the storage unit to the newly detected core tube length.

  As a result, once the core tube length is detected and stored in the storage unit for the yarn feeding bobbin set in the yarn winding machine, the core tube length is easily obtained by referring to the stored contents thereafter, Can be used for calculations. Even if the length of the core tube set in the yarn winding machine is not constant, the contents of the storage unit are updated by the update unit every time the core tube is set, so that the length of the core tube can be flexibly changed. The yarn can be wound up appropriately while complying with.

  The yarn winding machine is preferably configured as follows. That is, the yarn winding machine includes a drive unit and a calculation unit. The drive unit is configured to be able to move the core tube detection unit in the longitudinal direction of the core tube and to be able to control the amount of movement thereof. The calculation unit calculates a core tube length based on a movement amount of the core tube detection unit.

  As a result, the length of the core tube can be calculated easily and accurately based on the amount of movement of the core tube detection unit moved by the drive unit.

  The yarn winding machine is preferably configured as follows. In other words, the yarn winding machine includes an unwinding assist device for controlling a balloon that is generated when the yarn is pulled out from the yarn supplying bobbin. The unwinding assisting device includes a contact member that contacts the balloon, and a chase portion detection unit that detects a chase portion of the yarn feeding bobbin. The drive unit moves the core tube detection unit integrally with the contact member by moving the contact member in the longitudinal direction of the core tube.

  Thereby, since the structure of the unwinding assistance apparatus which controls a balloon is utilized, the function for detecting a core pipe length correctly is realizable with few parts. Further, the remaining yarn amount of the yarn feeding bobbin can be easily calculated based on the position of the chase portion with respect to the core tube length. Therefore, even when the yarn feeding bobbin in the half-ball state is set in the bobbin setting portion, the remaining yarn amount of the yarn feeding bobbin can be appropriately calculated.

  The yarn winding machine preferably includes a driving force conversion mechanism that converts rotation of a motor shaft of a motor as the driving unit into linear movement of the core tube detection unit.

  As a result, the core tube detection unit can be linearly moved using a motor that can electrically control the rotation angle, so that the length of the core tube can be accurately measured.

  The yarn winding machine is preferably configured as follows. That is, the yarn winding machine includes a tension applying device that applies tension to the yarn wound around the package. The tension applying device performs tension control according to the length of the core tube detected by the core tube detection unit.

  Thereby, by actually measuring the core tube length of the yarn feeding bobbin set in the bobbin setting unit and using it for the control, it is possible to perform tension control more reflecting the actual situation.

  The yarn winding machine preferably includes a determination unit that determines whether or not the yarn feeding bobbin is detached from a set position of the bobbin setting unit based on a detection signal of the core tube detection unit.

  Thereby, the function for determining whether or not the yarn feeding bobbin is set at an appropriate position can be realized with a simple configuration using the core tube detection unit.

  In the yarn winding machine, it is preferable that the winding operation of the winding unit is stopped when the determination unit determines that the yarn feeding bobbin is detached from the set position of the bobbin setting unit.

  Thereby, it is possible to prevent the winding operation from being performed in a state where the yarn feeding bobbin is detached from the set position.

  The yarn winding machine preferably includes a notifying unit for notifying that the yarn feeding bobbin is detached from the set position of the bobbin setting unit.

  As a result, the operator can quickly grasp that the yarn feeding bobbin is out of the set position.

The side view of the winder unit with which the automatic winder which concerns on one Embodiment of this invention is provided. The front view which showed the schematic structure of the winder unit. The expansion perspective view which showed the structure of the unwinding assistance apparatus and a core pipe detection sensor. FIG. 6 is a side cross-sectional view schematically showing the positional relationship between the yarn feeding bobbin and the movable member when the yarn feeding bobbin is set on the yarn feeding bobbin holding portion. Side surface sectional drawing which showed typically a mode that the length of a core pipe was detected with a core pipe detection sensor. Side surface sectional drawing which showed typically a mode that the chase part of a yarn feeding bobbin was detected by a chase part detection sensor. Side surface sectional drawing which showed typically a mode that it detected that the yarn feeding bobbin has remove | deviated from the set position with a core pipe detection sensor.

  Next, an embodiment of the invention will be described. FIG. 1 is a side view of a winder unit 10 included in an automatic winder according to an embodiment of the present invention. FIG. 2 is a front view showing a schematic configuration of the winder unit 10.

  The winder unit 10 shown in FIGS. 1 and 2 is a package 30 having a predetermined length and a predetermined shape by winding a yarn 20 unwound from a yarn supplying bobbin 21 around a winding bobbin 22 while traversing. The automatic winder (yarn winding machine) of this embodiment includes a plurality of winder units 10 arranged side by side, and a machine base control device 90 arranged at one end in the arranged direction. The machine control device 90 includes a display screen (notification unit) 91 capable of displaying the winding work status of each winder unit 10.

  Each winder unit 10 includes a unit frame 11 (FIG. 1) provided on the left and right sides in a front view, and a winding unit body 16 provided on the side of the unit frame 11. Further, the winder unit 10 includes a unit controller 50 that controls each part of the winding unit main body 16.

  The winding unit body 16 includes a cradle 23 configured to be capable of mounting the winding bobbin 22 and a traverse drum 24 for traversing the yarn 20 and driving the winding bobbin 22. A taking part 17 is provided. The winding unit body 16 includes various devices in a yarn traveling path between the yarn feeding bobbin 21 and the traverse drum 24. More specifically, in the yarn traveling path, the unwinding assisting device 12, the tension applying device 13, and the yarn joining device (yarn joining unit) are sequentially arranged from the yarn feeding bobbin 21 side to the traverse drum 24 side. 14 and a clearer head 49 provided in the clearer (yarn quality measuring device) 15 are disposed.

  Further, as shown in FIG. 1, a magazine type supply device 60 for an operator to supply the yarn feeding bobbin 21 is disposed on the front side of the winding unit main body 16. The magazine-type supply device 60 includes a magazine holding portion 61 that extends obliquely upward from the lower part of the winder unit 10 and a bobbin storage device 62 that is attached to the tip of the magazine holding portion 61. .

  The bobbin storage device 62 includes a magazine can 63, and the magazine can 63 is formed with a plurality of storage holes arranged in a circle. The supply bobbin 70 can be set in an inclined posture in each of the storage holes. The magazine can 63 is configured to be capable of intermittent rotational feed drive by a motor (not shown). Then, the supply bobbins 70 are dropped one by one on a bobbin supply path (not shown) of the magazine holding unit 61 by intermittent driving of the magazine can 63 and opening / closing operation of a control valve (not shown) provided in the magazine can 63. Can do. The supply bobbin 70 supplied to the bobbin supply path is guided to a yarn supplying bobbin holding portion (bobbin setting portion) 71 while keeping the inclined posture.

  The yarn supplying bobbin holding portion 71 includes a rotating means (not shown), and after receiving the supply bobbin 70 from the bobbin supply path, rotates the supply bobbin 70 so as to cause the supply bobbin 70 to be brought into an upright position from an oblique position. As a result, the supply bobbin 70 is appropriately supplied as the yarn supply bobbin 21 to the set position (position shown in FIGS. 1 and 2) at the lower part of the winding unit main body 16, and the winding operation by the winder unit 10 is performed. Can do.

  The automatic winder of this embodiment is configured to form the package 30 while splicing the yarns of the plurality of yarn feeding bobbins 21. However, the shape of the yarn feeding bobbin 21 to be used is not necessarily strictly constant. Not necessarily. That is, the dimension of the core tube of the yarn feeding bobbin 21 is set so as to satisfy a predetermined condition (for example, the length of the core tube is within a predetermined range), but varies slightly depending on the manufacturer. There is. In this regard, in the present embodiment, although details will be described later, even when the yarn feeding bobbin 21 having different core tube lengths is set in the magazine can 63 and used, the yarn can be wound with appropriate control. It is configured to be able to.

  The unwinding assisting device 12 brings the movable member 76 into contact with the balloon formed on the upper portion of the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn unwound from the yarn feeding bobbin 21, and appropriately adjusts the size of the balloon. This is for assisting the unwinding of the yarn 20 by controlling. A core tube detection sensor 81 for detecting the length of the core tube 95 of the yarn feeding bobbin 21 is attached to the unwinding assisting device 12.

  The unit control unit 50 calculates the core tube length of the yarn supplying bobbin 21 set in the yarn supplying bobbin holding unit 71 based on the detection signal of the core tube detection sensor 81, and supplies the yarn based on the calculated core tube length. The bobbin 21 is configured such that the winding yarn amount can be set. The details of the configuration of the unwinding assisting device 12 and the core tube detection sensor 81 and the processing of the unit control unit 50 will be described later.

  The tension applying device 13 applies a predetermined tension to the traveling yarn 20. The tension applying device 13 of this embodiment is configured as a gate type in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are configured to be rotatable by a rotary solenoid so that the comb teeth are in a meshed state or a released state.

  The tension applying device 13 is electrically connected to the tension applying device control unit 82. The tension applied by the tension applying device 13 to the yarn 20 is controlled (tension control) by an electrical control signal generated by the tension applying device control unit 82.

  The tension applying device control unit 82 is configured to perform tension control according to the remaining yarn amount of the yarn supplying bobbin 21. More specifically, the tension applying device controller 82 is configured to increase the force applied to the yarn 20 at the initial stage of unwinding operation of the fully-fitted yarn feeding bobbin 21 (when the remaining yarn amount is large). 13 is controlled. On the other hand, at the end of the unwinding operation of the yarn supplying bobbin 21 (when the remaining yarn amount is small), the tension applying device 13 is controlled so as to weaken the tension applied to the yarn 20. Thereby, it is possible to suppress an increase in tension that occurs when the remaining yarn of the yarn supplying bobbin 21 is reduced, and to stabilize the tension of the yarn 20.

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

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

  On the lower side and the upper side of the yarn joining device 14, a lower yarn guide pipe 25 that catches and guides the lower yarn on the yarn feeding bobbin 21 side, and an upper yarn guide pipe that catches and guides the upper yarn on the package 30 side ( Thread end catching portion) 26. A suction port 32 is formed at the tip of the lower thread guide pipe 25, and a suction mouth 34 is provided at the tip of the upper thread guide pipe 26. Appropriate negative pressure sources are connected to the lower thread guide pipe 25 and the upper thread guide pipe 26, respectively, and a suction flow can be applied to the suction port 32 and the suction mouth 34.

  With this configuration, at the time of yarn breakage or yarn cut, the suction port 32 of the lower yarn guide pipe 25 captures the lower yarn at the position shown in FIGS. 1 and 2, and then rotates upward about the shaft 33. The lower thread is guided to the yarn joining device 14 by moving. At substantially the same time, the upper thread guide pipe 26 rotates upward from the position shown in FIGS. 1 and 2 about the shaft 35, and the upper thread unwound from the package 30 reversed by the drum drive motor 53 is removed. Captured by the suction mouse 34. Subsequently, the upper thread guide pipe 26 rotates downward about the shaft 35 to guide the upper thread to the yarn joining device 14. Then, the yarn joining device 14 performs the joining of the lower yarn and the upper yarn.

  As shown in FIG. 2, the yarn unwound from the yarn supplying bobbin 21 is wound around a winding bobbin 22 disposed on the downstream side of the yarn joining device 14. The winding bobbin 22 is driven to rotate when a traverse drum 24 disposed opposite to the winding bobbin 22 is driven to rotate. A traverse groove 27 is formed on the outer peripheral surface of the traverse drum 24, and the traverse groove 27 enables the yarn 20 to be traversed with a predetermined width. As shown in FIG. 2, the traverse drum 24 is connected to a motor shaft of a drum drive motor (drum rotation drive unit) 53, and the operation of the drum drive motor 53 is controlled by a motor control unit 54. The motor control unit 54 is configured to perform control for operating and stopping the drum drive motor 53 based on a signal from the unit control unit 50.

  A rotation sensor 42 is attached to the traverse drum 24, and the rotation sensor 42 is electrically connected to the analyzer 52 provided in the clearer 15. The rotation sensor 42 is configured as, for example, a rotary encoder, and is configured to transmit a rotation pulse signal to the analyzer 52 every time the traverse drum 24 rotates by a predetermined angle. The analyzer 52 acquires the yarn winding speed based on the number of rotation pulse signals input per unit time, and uses this to determine a yarn defect. Further, the unit controller 50 calculates the winding yarn amount based on the rotation pulse signal acquired via the analyzer 52. This winding yarn amount is also used for calculating the remaining yarn amount of the yarn feeding bobbin 21.

  With the above configuration, when the bobbin is supplied from the magazine type supply device 60 to the yarn supply bobbin holding portion 71, the take-up bobbin 22 is driven, and the yarn 20 unwound from the yarn supply bobbin 21 is taken up. A package 30 having a predetermined length can be formed by winding it around the bobbin 22.

  Next, the configurations of the unwinding assisting device 12 and the core tube detection sensor 81 will be described with reference to FIGS. FIG. 3 is an enlarged perspective view showing the configuration of the unwinding assisting device 12 and the core tube detection sensor 81. FIG. 4 is a side cross-sectional view schematically showing the positional relationship between the yarn feeding bobbin 21 and the movable member 76 when the yarn feeding bobbin 21 is set on the yarn feeding bobbin holding portion 71. FIG. 5 is a side cross-sectional view schematically showing how the length of the core tube 95 is detected by the core tube detection sensor 81. FIG. 6 is a side cross-sectional view schematically showing how the chase portion of the yarn feeding bobbin 21 is detected by the chase portion detection sensor 80.

  As shown in FIGS. 1 and 2, the unwinding assisting device 12 of this embodiment includes a fixed member 75, a driving force conversion mechanism 85, a movable member 76, a stepping motor (driving unit) 79, and a chase detecting unit. The sensor 80 is provided as a main configuration. In addition, the unwinding assisting device 12 is provided with the core tube detection sensor 81 as described above.

  The fixing member 75 is fixed to the unit frame 11. A throttle part (not shown) for controlling the balloon is formed below the fixing member 75. The yarn drawn out from the yarn feeding bobbin 21 is guided to the tension applying device 13 through this narrowed portion.

  The driving force conversion mechanism 85 is for converting the rotational force of the stepping motor 79 into a linear force, and includes an elevating part 78 and a screw shaft 77. The screw shaft 77 is arranged in the vertical direction (that is, a direction parallel to the longitudinal direction of the set yarn feeding bobbin 21) and is rotatably supported. Moreover, the raising / lowering part 78 becomes a shape which turned the substantially U shape upside down in the front view. The elevating part 78 can hold a movable member (contact member) 76 formed in a cylindrical shape.

  The elevating part 78 is supported by the attachment member 74. A screw hole is cut in the attachment member 74, and the elevating part 78 is attached to the screw shaft 77 by screwing the screw shaft 77 into the screw hole. A motor shaft of a stepping motor 79 is connected to one end of the screw shaft 77. Further, movement of the elevating part 78 in the rotational direction is restricted by appropriate means so as not to rotate integrally with the screw shaft 77.

  With this configuration, when the stepping motor 79 is driven and the screw shaft 77 rotates, the elevating part 78 moves upward or downward along the axial direction of the screw shaft 77. When the new yarn feeding bobbin 21 is set or when the yarn joining operation is performed, the stepping motor 79 is appropriately controlled, and the movable member 76 (elevating part 78) is made to stand by at a standby position above the yarn feeding bobbin 21. Further, when the setting of the yarn feeding bobbin 21 is completed or when the yarn splicing operation is completed, the movable member 76 descends from the standby position, and a predetermined positional relationship with the chase portion of the yarn feeding bobbin 21 is established. The stepping motor 79 is controlled so as to be realized.

  The stepping motor 79 is electrically connected to the stepping motor control unit 83. The stepping motor control unit 83 controls the stepping motor 79 by a drive pulse signal. The stepping motor control unit 83 is connected to the unit control unit 50, and the unit control unit 50 can perform the control of each part such as the yarn joining device 14 and the clearer 15 and the control of the unwinding assisting device 12 in conjunction with each other. .

  The chase part detection sensor (chase part detection part) 80 is for detecting the chase part of the yarn feeding bobbin 21. The chase detection sensor 80 of the present embodiment is configured as a transmissive photosensor having a light projecting unit 80a and a light receiving unit 80b. A detection signal detected by the chase unit detection sensor 80 is input to the unit control unit 50.

  The core tube detection sensor 81 (core tube detection unit) is for detecting the length of the core tube 95 of the yarn feeding bobbin 21. As with the chase detection sensor 80, the core tube detection sensor 81 of the present embodiment is configured as a transmissive photosensor having a light projecting part 81a and a light receiving part 81b. The core tube detection sensor 81 is disposed at the center of the elevating unit 78 in a side view so that the center of the core tube 95 can be detected. Further, both the core tube detection sensor 81 and the chase part detection sensor 80 are arranged in the elevating part 78, and the two sensors are simultaneously moved up and down as the elevating part 78 is raised and lowered. A detection signal detected by the core tube detection sensor 81 is input to the unit controller 50.

  As shown in FIG. 2, the unit controller 50 includes a processing unit 84 that performs various processes based on the detection unit signal of the core tube detection sensor 81. The processing unit 84 includes a calculation unit 87, an update unit 88, and a determination unit 89. In addition, the unit control unit 50 includes a storage unit 86 that stores the length of the core tube calculated based on the detection signal of the core tube detection sensor 81.

  The calculation unit 87 performs processing for calculating the length of the core tube based on the drive amount of the stepping motor 79 (the amount of movement of the core tube detection sensor 81 moved by the stepping motor 79). More specifically, the unit controller 50 first controls the stepping motor 79 to move the elevating unit 78 to the standby position. Thereafter, the unit controller 50 rotates the stepping motor 79 while monitoring the state of the core tube detection sensor 81 to lower the elevating unit 78 at a predetermined speed. At this time, the number of drive pulses transmitted to the stepping motor 79 is counted by an appropriate counter.

  When the core tube detection sensor 81 detects the core tube when the elevating unit 78 is lowered by a certain distance from the standby position, the calculating unit 87 counts the drive pulse count value of the stepping motor 79 (that is, the screw shaft 77). ) And the pitch of the screw shaft 77, the descending distance (movement distance) of the core tube detection sensor 81 is calculated. Then, the calculation unit 87 acquires the core tube length of the yarn feeding bobbin 21 by subtracting the obtained descending distance from the predetermined distance.

  The unit controller 50 controls the stepping motor 79 so that the elevating unit 78 continues to descend even after the core tube detection sensor 81 detects the core tube. When the chase part detection sensor 80 detects the chase part when the elevating part 78 is lowered by a certain distance from the standby position, the calculation part 87 performs the chase in substantially the same manner as the case of the core tube detection sensor 81 described above. Get the location of the part.

  When the core tube length and the position of the chase portion are obtained as described above, the calculation unit 87 calculates the winding yarn amount (remaining yarn amount) of the yarn feeding bobbin 21 at the start of winding. The remaining yarn amount can be obtained by using an appropriate function based on the position of the chase portion with respect to the core tube length.

  When the calculation unit 87 obtains the core tube length, the update unit 88 performs a process of overwriting (updating) the core tube length stored in the storage unit 86 with the calculated core tube length. Thereby, every time the yarn supplying bobbin 21 is supplied to the winding unit main body 16, the core tube length of the yarn supplying bobbin 21 can be re-stored in the storage unit 86.

  The determination unit 89 performs determination processing for determining whether or not the yarn feeding bobbin 21 is out of the set position. Details of the determination processing by the determination unit 89 will be described later.

  Next, the processing of the unit controller 50 when the yarn supplying bobbin 21 is set in the yarn supplying bobbin holding unit 71 will be described. As shown in FIG. 4, the movable member 76 is at a standby position above the yarn supplying bobbin 21 immediately after the yarn supplying bobbin 21 is supplied from the magazine type supply device 60 and set in the yarn supplying bobbin holding portion 71. Evacuated. When the setting of the yarn feeding bobbin 21 to the yarn feeding bobbin holding portion 71 is completed, the stepping motor 79 is driven, and thereby the lifting portion 78 moves downward.

  Then, when the elevating unit 78 moves downward by a certain distance, the light from the light projecting unit 81a to the light receiving unit 81b of the core tube detection sensor 81 is blocked by the upper end portion of the core tube 95 as shown in FIG. The upper end portion of the core tube 95 is detected. The core tube detection sensor 81 transmits a detection signal indicating that the core tube 95 has been detected to the unit controller 50. When the unit control unit 50 receives this detection signal, the calculation unit 87 calculates the core tube length based on the detection signal. Then, the calculated core tube length is stored in the storage unit 86 by the update unit 88.

  Thereafter, the descent of the elevating part 78 continues, and this time, the chase part of the yarn feeding bobbin 21 is detected by the chase part detection sensor 80. When the unit control unit 50 receives the detection signal of the chase unit detection sensor 80, the calculation unit 87 calculates the position of the chase unit, and the obtained position of the chase unit and the core tube length stored in the storage unit 86 Based on the above, the winding yarn amount wound around the yarn supplying bobbin 21 is calculated.

  Note that the yarn amount of the yarn feeding bobbin 21 supplied to the yarn feeding bobbin holding portion 71 is not always constant (full amount). For example, it is conceivable that the half yarn feeding bobbin 21 is supplied to the winding unit main body 16 under the following circumstances. That is, although the full yarn feeding bobbin 21 is supplied to the winding unit main body 16 and the winding operation has been performed smoothly halfway, many yarn splicing mistakes have frequently occurred from the middle. The yarn feeding bobbin 21 may be discharged from the winding unit main body 16 at a stage before all the yarn is unwound. In this case, the operator takes measures such as removing the cause of the yarn splicing error with respect to the discharged yarn supplying bobbin 21 (half yarn supplying bobbin), and inputs the yarn supplying bobbin 21 into the magazine can 63 again. Then, the half yarn supply bobbin 21 is supplied to the winding unit main body 16. However, according to the configuration of the present embodiment, the winding yarn amount (remaining yarn amount) is appropriately calculated by actually measuring the length of the core tube and the position of the chase portion of such a half-ball yarn feeding bobbin. can do.

  After the winding yarn amount is calculated as described above, the yarn on the package 30 side and the yarn on the yarn supplying bobbin 21 side are spliced by the yarn splicing device 14, and winding is started. During the winding operation, the unit control unit 50 performs control to move the lifting unit 78 of the unwinding assisting device 12 based on the detection signal input from the chase unit detection sensor 80. More specifically, the descent of the chase portion accompanying the unwinding of the yarn from the yarn feeding bobbin 21 is detected by the chase portion detection sensor 80, and the stepping motor 79 is driven accordingly to lower the movable member 76. Thereby, the size of the balloon generated when the yarn is unwound from the yarn supplying bobbin 21 can be appropriately controlled.

  The unit control unit 50 is based on the winding yarn amount of the yarn supplying bobbin 21 calculated by the calculating unit 87 and the yarn amount (winding yarn amount) wound around the package 30 from the yarn supplying bobbin 21. The current remaining yarn amount is calculated, and the tension applying device 13 is controlled based on the obtained remaining yarn amount. Thereby, since the control which suppresses the increase in tension when the remaining yarn amount of the yarn supplying bobbin 21 decreases can be performed accurately, the quality of the package 30 can be improved.

  When the unwinding of the yarn wound around the yarn supplying bobbin 21 is completed, the yarn supplying bobbin 21 that has become an empty bobbin is discharged from the yarn supplying bobbin holding portion 71 to an appropriate place. Then, a new yarn supplying bobbin 21 is introduced from the magazine type supply device 60. Then, the unit controller 50 performs the core tube length measurement process in the same manner as described above, acquires the core tube length of the newly supplied yarn feeding bobbin 21, and starts the winding operation. The newly acquired core tube length value is applied to the tension control performed at this time.

  Next, the set mistake determination process at the start of winding by the determination unit 89 will be described. In the automatic winder of the present embodiment, the shortest core tube length (lower limit value of the core tube length) that the winder unit 10 can appropriately perform the winding operation is set in advance. The set error determination process determines whether or not the yarn feeding bobbin 21 is properly set at the set position based on the shortest core tube length.

  Details will be described below. The unit controller 50 stores in advance a driving amount of the stepping motor 79 necessary for moving the core tube detection sensor 81 from the standby position described above to a position corresponding to the shortest core tube length. The determination unit 89 drives the stepping motor 79 by the drive amount (that is, even if the core tube detection sensor 81 reaches the detection position corresponding to the shortest core tube length), the core tube detection sensor 81 However, when the core tube 95 is not detected, it is determined that a setting error has occurred.

  Thereby, when the yarn feeding bobbin 21 having a core pipe length shorter than the shortest core pipe length is set, it can be detected as an abnormality. Further, even when the yarn feeding bobbin 21 is not set at an accurate position due to a chute mistake of the yarn feeding bobbin 21 of the magazine type supply device 60, it can be detected by this set mistake determination process.

  If the determination unit 89 determines that a setting error has occurred, the unit control unit 50 displays the fact on the display screen 91 provided in the machine base control device 90 and stops the winding operation by the winding unit 17. Let

  By the way, although the yarn supplying bobbin 21 was normally set normally in the yarn supplying bobbin holding portion 71, the yarn supplying bobbin 21 is out of the set position of the yarn supplying bobbin holding portion 71 during the winding operation. Is also possible. For example, during the winding operation, the yarn is pulled upward from the yarn supplying bobbin 21 to be unwound, whereby the yarn supplying bobbin 21 itself is pulled upward, and the yarn supplying bobbin 21 is pulled from the yarn supplying bobbin holding portion 71. This is the case when it comes off and floats up.

  If the winding operation is continued with the yarn feeding bobbin 21 detached as described above, a large amount of yarn may be wasted. Therefore, in the present embodiment, in order to prevent such a situation, the determination unit 89 has a function of checking whether or not the yarn feeding bobbin 21 is set at an appropriate position of the yarn feeding bobbin holding unit 71. It is configured.

  Next, with reference to FIG. 7, the check process at the time of the winding operation by the determination unit 89 will be described. FIG. 7 is a side cross-sectional view schematically showing how the core tube detection sensor 81 detects that the yarn feeding bobbin 21 is out of the set position.

  The set position check process by the determination unit 89 is performed using the movement of the movable member 76 that is performed during the yarn splicing operation. That is, when the yarn breaks at the time of unwinding from the yarn feeding bobbin 21, when the clearer 15 finds a yarn defect and cuts the yarn with a cutter, or when the yarn feeding bobbin 21 is newly supplied, etc. In order to perform the yarn splicing operation, the unit controller 50 raises the movable member 76 to the standby position. When the yarn joining operation is completed and the rewinding is resumed, the movable member 76 is lowered to the original position in order to return the balloon at the time of yarn unwinding to a controllable state. Then, the check process of the set position of the yarn feeding bobbin 21 is performed based on the detection signal of the core pipe detection sensor 81 at the time of lowering. Hereinafter, this determination process will be described.

  That is, the determination unit 89 measures the length of the core pipe in the same procedure as when the yarn feeding bobbin 21 is newly set even when the movable member 76 descends after completion of the yarn joining operation due to yarn breakage or the like. Then, the obtained core tube length is compared with the core tube length (core tube length stored in the storage unit 86) measured when the yarn feeding bobbin 21 is newly set. Since the core tube length is measured for the same yarn supplying bobbin 21, the two measured values should normally coincide with each other. However, when the above-described lifting of the yarn supplying bobbin 21 occurs, the length of the core tube is increased. The measured values will not match. If the measured values of the two core tube lengths do not match as a result of the comparison (strictly speaking, there is a difference of a predetermined value or more between the two core tube lengths), the determination unit 89 determines that the yarn feeding bobbin It is determined that 21 is out of the set position.

  For example, as shown in FIG. 7, when the yarn feeding bobbin 21 is out of the normal set position (the position indicated by the chain line) of the yarn feeding bobbin holding portion 71 during the winding operation, the detected core tube length is the original length. It will be different from the value. Therefore, in the case as shown in FIG. 7, it is determined that the yarn feeding bobbin 21 is out of the set position.

  When the determination unit 89 determines that the yarn feeding bobbin 21 is out of the set position, the unit control unit 50 displays a message to that effect on the display screen 91 provided in the machine base control device 90 and the winding unit 17 performs winding. Stop work. As a result, the operator can quickly perform the work necessary for recovery and resume the winding.

  As described above, the automatic winder according to the present embodiment includes the yarn feeding bobbin holding unit 71, the winding unit 17, and the core tube detection sensor 81. In the yarn feeding bobbin holding portion 71, the yarn feeding bobbin 21 in which the yarn is wound around the core tube 95 is set. The winding unit 17 winds the yarn drawn from the yarn supplying bobbin 21 around the package. The core tube detection sensor 81 detects the length of the core tube of the yarn supplying bobbin 21 set in the yarn supplying bobbin holding portion 71.

  Thereby, since the core tube length of the yarn feeding bobbin 21 can be detected by the core tube detection sensor 81, the trouble of inputting the set value of the core tube length to the automatic winder can be omitted, and the burden on the operator can be reduced. Further, since the value obtained by actually measuring the length of the core tube is used for control, improper control is not performed due to an input error as compared with the conventional manual input.

  Further, the automatic winder of the present embodiment is configured as follows. That is, the automatic winder includes a storage unit 86 and an update unit 88. The storage unit 86 stores the length of the core tube detected by the core tube detection sensor 81. When the yarn supplying bobbin 21 is set in the yarn supplying bobbin holding unit 71, the updating unit 88 updates the core tube length stored in the storage unit 86 to the newly detected core tube length.

  Accordingly, once the core tube length is detected and stored in the storage unit 86 for the yarn feeding bobbin 21 set in the automatic winder, the core tube length is easily obtained by referring to the stored contents thereafter, Can be used for the calculation of. Even when the length of the core tube set in the automatic winder is not constant, the contents of the storage unit 86 are updated by the update unit 88 every time the core tube is set, so that the length of the core tube changes. The yarn can be wound up appropriately while responding flexibly.

  Further, the automatic winder of the present embodiment is configured as follows. That is, the automatic winder includes a stepping motor 79 and a calculation unit 87. The stepping motor 79 is configured to be able to move the core tube detection sensor 81 in the longitudinal direction of the core tube 95 and to be able to control the amount of movement of the core tube detection sensor 81. The calculation unit 87 calculates the core tube length based on the movement amount of the core tube detection sensor 81.

  Accordingly, the length of the core tube can be easily and accurately calculated based on the movement amount of the core tube detection sensor 81 moved by the stepping motor 79.

  Further, the automatic winder of the present embodiment is configured as follows. That is, the automatic winder includes the unwinding assisting device 12 for controlling the balloon generated when the yarn is pulled out from the yarn feeding bobbin 21. The unwinding assisting device 12 includes a movable member 76 that contacts the balloon and a chase portion detection sensor 80 that detects the chase portion of the yarn feeding bobbin 21. The stepping motor 79 moves the core tube detection sensor 81 integrally with the movable member 76 by moving the movable member 76 in the longitudinal direction of the core tube 95.

  Thereby, since the structure of the unwinding assistance apparatus 12 which controls a balloon is utilized, the function for detecting a core pipe length correctly is realizable with few parts. Further, the remaining yarn amount of the yarn supplying bobbin 21 can be easily calculated based on the position of the chase portion with respect to the core tube length. Therefore, even when the yarn feeding bobbin 21 in a half-ball state is set in the yarn feeding bobbin holding portion 71, the remaining yarn amount of the yarn feeding bobbin can be calculated appropriately.

  Further, the automatic winder of the present embodiment includes a driving force conversion mechanism 85 that converts the rotation of the motor shaft of the stepping motor 79 as a driving unit into linear movement of the core tube detection sensor 81.

  Accordingly, the core tube detection sensor 81 can be linearly moved using the stepping motor 79 that can electrically control the rotation angle, so that the length of the core tube can be accurately measured.

  Further, the automatic winder of the present embodiment is configured as follows. That is, the automatic winder includes a tension applying device 13 that applies tension to the yarn 20 wound around the package 30. The tension applying device 13 performs tension control according to the length of the core tube detected by the core tube detection sensor 81.

  Thus, by actually measuring the core tube length of the yarn feeding bobbin 21 set in the yarn feeding bobbin holding portion 71 and using it for the control, it is possible to perform tension control more reflecting the actual situation.

  Further, in the automatic winder of the present embodiment, a determination unit 89 that determines whether the yarn feeding bobbin 21 is removed from the set position of the yarn feeding bobbin holding unit 71 based on the detection signal of the core tube detection sensor 81 is provided. Prepare.

  Thereby, the function for determining whether or not the yarn feeding bobbin 21 is set at an appropriate position can be realized with a simple configuration using the core tube detection sensor 81.

  Further, in the automatic winder of the present embodiment, when the determination unit 89 determines that the yarn feeding bobbin 21 is detached from the set position of the yarn feeding bobbin holding unit 71, the winding operation of the winding unit 17 is stopped. .

  Thereby, it is possible to prevent the winding operation from being performed in a state where the yarn feeding bobbin 21 is detached from the set position.

  Further, the automatic winder of the present embodiment includes a display screen 91 for notifying that the yarn feeding bobbin 21 has been removed from the set position of the yarn feeding bobbin holding portion 71.

  As a result, the operator can quickly grasp that the yarn feeding bobbin 21 is out of the set position.

  Although the embodiment of the present invention has been described above, the above configuration can be further modified as follows.

  In the above-described embodiment, the core tube detection sensor 81 is disposed in the lifting unit 78 of the unwinding assisting device 12, but this configuration can be changed as appropriate. For example, the configuration can be changed to a configuration in which the core tube detection sensor 81 is disposed on a member different from the lifting unit 78.

  In addition, a transmission type photosensor is used for the chase portion detection sensor 80 and the core tube detection sensor 81, but this configuration can be changed as appropriate. For example, a reflective photosensor can be used for the chase detection sensor 80 and the core tube detection sensor 81.

  Further, instead of the chase part detection sensor 80 and the core tube detection sensor 81, a distance sensor that can measure the distance to the detection target can be employed. For example, one distance sensor is disposed at the center of the lifting unit 78 so that the upper end portion of the core tube 95 of the yarn feeding bobbin 21 can be detected. Then, the unit controller 50 acquires the position information of the core tube 95 and the position information of the chase portion of the yarn feeding bobbin 21 based on the distance information acquired by the distance sensor. Thus, one core pipe detection part can also be comprised so that the length of a core pipe and the position of a chase part may be detected.

  Further, the driving force conversion mechanism 85 can be appropriately changed as long as it is configured to convert the rotation of the motor shaft into the linear movement of the core tube detection sensor 81. For example, it can change to the structure which moves the raising / lowering part 78 to an up-down direction by belt drive. Moreover, it can change to the structure which moves the raising / lowering part 78 to an up-down direction with a worm gear and a pinion. In addition to the stepping motor 79, a servo motor can be used as the motor that drives the elevating unit 78. Furthermore, a drive unit other than the motor can be used. For example, a cylinder can be employed as the drive unit, and the winder unit can be configured as follows. That is, the winder unit includes a cylinder for driving the core tube detection sensor 81 and a movement amount detection unit for detecting the movement amount of the core tube detection sensor 81 moved by the cylinder. And the calculation part 87 of the unit control part 50 calculates a core pipe length based on the movement amount of the core pipe detection sensor 81 detected by the said movement amount detection part.

  Further, the tension applying device 13 is a gate type, but can be appropriately changed as long as it can perform tension control. For example, a disk-type device can be adopted as the tension applying device.

  In addition, a warning lamp is arranged for each winder unit 10, and when the yarn feeding bobbin 21 is detached from the yarn feeding bobbin holding portion 71, the warning lamp is activated to notify the operator of the state of the yarn feeding bobbin 21. Can be changed.

  Further, the winding unit 17 is configured to traverse the yarn by the traverse drum 24, but the configuration for traversing the yarn can be changed as appropriate. For example, a traverse device configured to rotate a traverse arm having a yarn guide attached to the tip, a traverse device configured to reciprocate the yarn guide by belt driving, a rotary traverse device using rotating blades, and the like can be used.

  Further, in place of the magazine type supply device 60 as shown in FIG. 1, a conveyance conveyor (not shown) is provided at the lower part of the automatic winder, and the yarn supplying bobbin 21 is supplied from the yarn supplying bobbin supply unit (not shown) You may comprise so that it may supply to the bobbin holding | maintenance part 71. FIG.

12 Unwinding assist device 13 Tension applying device 17 Winding portion 71 Yarn feeding bobbin holding portion (bobbin setting portion)
80 Chase part detection sensor (chase part detection part)
81 Core tube detection sensor (core tube detector)
86 storage unit 87 update unit 88 determination unit 89 calculation unit 76 movable member (contact member)
79 Stepping motor (drive unit)
91 Display screen (notification part)

Claims (9)

A bobbin setting unit in which a yarn supplying bobbin obtained by winding a thread around a core tube is set;
A winding unit for winding the yarn drawn from the yarn feeding bobbin into a package;
A core tube detection unit for detecting a core tube length of the yarn feeding bobbin set in the bobbin setting unit;
A yarn winding machine comprising: The yarn winding machine according to claim 1,
A storage unit for storing the length of the core tube detected by the core tube detection unit;
When a yarn feeding bobbin is set in the bobbin setting unit, an updating unit that updates the core tube length stored in the storage unit to a newly detected core tube length;
A yarn winding machine comprising: The yarn winding machine according to claim 1 or 2,
A driving unit capable of moving the core tube detection unit in the longitudinal direction of the core tube and controlling the amount of movement;
A calculation unit for calculating the length of the core tube based on the amount of movement of the core tube detection unit;
A yarn winding machine comprising: A yarn winding machine according to claim 3,
A unwinding assist device for controlling the balloon generated when the yarn is pulled out from the yarn feeding bobbin;
The unpacking assisting device is:
A contact member that contacts the balloon;
A chase part detecting unit for detecting a chase part of the yarn feeding bobbin;
Have
The drive unit is configured to move the core tube detection unit integrally with the contact member by moving the contact member in the longitudinal direction of the core tube. The yarn winding machine according to claim 3 or 4,
A yarn winding machine comprising: a driving force conversion mechanism that converts rotation of a motor shaft of a motor as the driving unit into linear movement of the core tube detection unit. A yarn winding machine according to any one of claims 1 to 5,
A tension applying device that applies tension to the yarn wound around the package;
The yarn winding machine, wherein the tension applying device performs tension control according to the length of the core tube detected by the core tube detection unit. A yarn winding machine according to any one of claims 1 to 6,
A yarn winding machine comprising: a determination unit that determines whether or not the yarn feeding bobbin is detached from a set position of the bobbin setting unit based on a detection signal of the core tube detection unit. The yarn winding machine according to claim 7,
The yarn winding machine, wherein when the determination unit determines that the yarn feeding bobbin is disengaged from the set position of the bobbin setting unit, the winding operation of the winding unit is stopped. A yarn winding machine according to claim 7 or 8,
A yarn winding machine comprising: a notifying unit for notifying that the yarn feeding bobbin is detached from a set position of the bobbin setting unit.

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