JP2009208880A - Yarn winding device and yarn winding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn winding device and a yarn winding method, capable of controlling a winding speed depending on the vibration of a cradle during winding. <P>SOLUTION: A winder unit 10 has the cradle 23 rotatably supporting a package 30, a strain gauge 80 to detect the intensity of vibration of the cradle 23, and a motor control section 54 to control a rotational speed of the package 30. The motor control section 54 monitors the vibration of the cradle 23 via the strain gauge 80 and controls the rotational speed of the package 30 according to the detected intensity of vibration. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a yarn winding device. More specifically, the present invention relates to a configuration and method for controlling the vibration of a cradle included in a yarn winding device.

  In a yarn winding device such as an automatic winder, it is desired to further increase the speed of winding a yarn on a winding bobbin from the viewpoint of improving the productivity of the package. On the other hand, if the rotational speed of the package is increased too much, a large vibration is generated in the cradle during winding, and the package surface may be damaged or, in extreme cases, the package may be detached from the cradle. For this reason, in a conventional automatic winder, a configuration is known in which an upper limit is set for the winding rotation speed so that vibrations are within an allowable range, and the winding speed is controlled within a speed range up to the upper limit speed.

  In particular, at the beginning of winding of the package, the rotation tends to become unstable due to the influence of the distortion of the winding bobbin. For example, when the winding bobbin is eccentric, the vibration becomes large. In consideration of this, in a conventional automatic winder, the package rotation speed is set to a low value at the beginning of winding (so-called touch winding), and when the winding becomes thick to some extent, the touch winding is released and the speed increasing process is performed up to the upper limit speed. May be adopted.

  However, since there are individual differences in the winding bobbin and the winding unit, the rotational speed at which vibration exceeding the allowable range is generated is different. In this regard, in the conventional control, a uniform touch winding speed and upper limit speed are used for a plurality of winding units, and therefore, the touch winding speed and the upper limit speed generate vibration in any winding unit. Therefore, it is necessary to set a low winding speed in anticipation of a large margin. For this reason, the entire winder cannot effectively use the capacity of the winding unit, and it has been difficult to increase the production efficiency of the package.

In this regard, Patent Document 1 discloses a configuration in which vibration is detected by an abnormal vibration detector provided in the cradle, and winding of the package is stopped when vibration that can be regarded as abnormal occurs. Further, Patent Document 2 discloses a configuration in which an alarm display or the like is notified when abnormal vibration is determined.
Japanese Utility Model Publication No. 2-43876 JP-A-6-127833

  However, the configurations of Patent Documents 1 and 2 are not intended to actively control vibration, but merely detect abnormal vibration. In particular, in the configuration of Patent Document 1, since the winding of the package is stopped when abnormal vibration occurs, a reduction in productivity due to this is unavoidable.

  The present invention has been made in view of the above circumstances, and a main object thereof is to provide a yarn winding device and a yarn winding method capable of controlling the winding speed according to the vibration of the cradle during winding. There is.

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 device having the following configuration is provided. That is, the yarn winding device includes a cradle that rotatably supports the package, a vibration detection unit that detects the strength of vibration of the cradle, and a rotation speed control unit that controls the rotation speed of the package. The rotation speed control unit monitors the vibration of the cradle by the vibration detection unit, and controls the rotation speed of the package according to the detected vibration intensity.

  As a result, the rotational speed of the package can be appropriately controlled within a range in which vibration does not become excessive, so that the productivity of the package can be improved.

  The yarn winding device preferably has the following configuration. That is, the rotational speed control unit includes a comparison unit and a speed increasing unit. The comparison unit compares the strength of vibration detected by the vibration detection unit with a set strength. The speed increasing unit increases the rotational speed of the package when the vibration detected by the vibration detecting unit is equal to or less than a set strength as a result of comparison by the comparing unit.

  As a result, the winding speed can be increased to the limit within a range where vibration is not excessive. In particular, the speed can be increased quickly while preventing the package from fluttering excessively at the time of speed increase at the start of winding. Therefore, the productivity of the package can be improved.

  The yarn winding device preferably has the following configuration. That is, the rotational speed control unit includes a speed reduction unit. The deceleration unit decelerates the rotational speed of the package when the vibration detected by the vibration detection unit exceeds the set strength as a result of comparison by the comparison unit.

  As a result, when excessive vibrations occur or when there is a risk of such vibrations, it is possible to continue the operation by reducing the rotational speed of the package to a speed at which vibrations are within an allowable range. Therefore, it is possible to prevent the package from being damaged by vibration and deteriorating the quality. Moreover, productivity can be improved compared with the structure which stops at the time of abnormality.

  The yarn winding device preferably has the following configuration. That is, the rotational speed control unit includes a winding progress acquisition unit that acquires the winding progress from the beginning of winding of the package. The deceleration unit reduces the rotational speed of the package only when the winding progress acquired by the winding progress acquiring unit is not more than a predetermined progress.

  Thereby, for example, at the beginning of winding where excessive flutter is likely to occur due to eccentricity of the core tube (winding bobbin) of the package, the speed reduction control is performed, so that deterioration of the package quality due to excessive vibration can be prevented. That is, the above-described yarn winding device determines whether or not the touch winding in which the package rotation speed is set low before the deceleration control is finished by acquiring the winding progress from the beginning of the package winding. is doing. And when the winding progress degree acquired is below a predetermined progress degree, that is, when the touch winding is not finished, the deceleration process is executed according to the strength of the vibration of the cradle. . As a result, in the above-described yarn winding device, it is possible to appropriately prevent deterioration in the quality of the package due to excessive vibration during touch winding that is likely to cause flapping.

  On the other hand, after winding has progressed to a certain degree and a sufficient yarn layer is formed on the package, that is, after the end of touch winding, the vibration buffering effect by the yarn layer can be expected, so that deceleration control is not performed. ing. As a result, it is possible to prevent the yarn from being wound at a low-speed rotation unintended by the producer after the end of touch winding, so that the winding speed can be increased to the limit and the package can be wound. Productivity can be improved.

  According to another aspect of the present invention, the following yarn winding method is provided. That is, in this yarn winding method, a step of detecting the strength of vibration of the cradle supporting the rotating package, a step of controlling the rotational speed of the package according to the detected strength of vibration, including.

  As a result, the rotational speed of the package can be appropriately controlled within a range in which vibration does not become excessive, so that the productivity of the package can be improved.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of a configuration of a winder unit 10 provided in an automatic winder according to a first embodiment of the present invention.

  A winder unit 10 shown in FIG. 1 is a package 30 having a predetermined length and a predetermined shape by winding a spun yarn 20 unwound from a yarn supplying bobbin 21 around a winding bobbin 22 while traversing. The automatic winder (yarn winding device) of this embodiment includes a plurality of winder units 10 arranged side by side, and an unillustrated machine base control device arranged at one end in the arranged direction.

  Each winder unit 10 includes a winding unit main body 16 and a unit control unit 50.

  The winding unit main body 16 includes a balloon controller 12, a tension applying device 13, a splicer device 14, and the like in order from the yarn supplying bobbin 21 side in the yarn traveling path between the yarn supplying bobbin 21 and the winding drum 24. And a clearer (yarn quality measuring device) 15 are arranged.

  The balloon controller 12 assists the unwinding of the yarn from the yarn supplying bobbin 21 by lowering the regulating member 40 covering the core tube in conjunction with the unwinding of the yarn from the yarn supplying bobbin 21. The regulating member 40 contacts 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 applies the appropriate tension to the balloon to release the yarn. Assist the cocoon. An unillustrated sensor for detecting the chase portion of the yarn feeding bobbin 21 is provided in the vicinity of the restricting member 40. When this sensor detects the descent of the chase portion, the restricting member 40 is followed accordingly. For example, it can be lowered by an air cylinder (not shown).

  The tension applying device 13 applies a predetermined tension to the traveling spun 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, for example, a rotary solenoid so that the comb teeth are engaged or released. The tension applying device 13 can apply a certain tension to the wound yarn and improve the quality of the package 30. In addition to the gate type, for example, a disk type can be adopted as the tension applying device 13.

  The splicer device 14 detects the lower thread on the yarn feeding bobbin 21 and the package 30 side when the clearer 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 is spliced.

  The clearer head 49 of the clearer 15 is provided with an unillustrated sensor for detecting the thickness of the spun yarn 20. The clearer 15 is configured to detect a yarn defect by monitoring a yarn thickness signal from the sensor. Further, in the vicinity of the clearer head 49, a cutter (not shown) is provided for cutting the spun yarn 20 immediately when the clearer 15 detects a yarn defect.

  On the lower side and upper side of the splicer device 14, the lower yarn guide pipe 25 that captures the lower yarn on the yarn feeding bobbin 21 side and guides it to the splicer device 14, and the upper yarn on the package 30 side is captured on the splicer device 14. An upper thread guide pipe 26 for guiding is provided. Further, the lower thread guide pipe 25 and the upper thread guide pipe 26 are configured to be rotatable about shafts 33 and 35, respectively. 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 is generated in the suction port 32 and the suction mouth 34 so that the thread ends of the upper thread and the lower thread are moved. It is configured to be able to suck and capture.

  On the further upper side of the splicer device 14, a cradle 23 configured to be able to rotatably hold a take-up bobbin (paper tube, core tube) 22 and a spun yarn 20 are traversed and the take-up bobbin 22 is driven. And a winding drum (traverse drum) 24 for the purpose. The cradle 23 is configured to be swingable in a direction in which the cradle 23 approaches or separates from the take-up drum 24, whereby the package 30 is brought into contact with or separated from the take-up drum 24. A spiral traverse groove 27 is formed on the outer circumferential surface of the winding drum 24, and the spun yarn 20 is traversed by the traverse groove 27.

  The take-up bobbin 22 is driven when the take-up drum 24 disposed to face the take-up bobbin 22 rotates. The winding drum 24 is connected to an output shaft of a drum drive motor 53, and the operation of the drum drive motor 53 is controlled by a motor control unit (rotational speed control unit) 54. With this configuration, the spun yarn 20 unwound from the yarn supplying bobbin 21 can be wound on the winding bobbin 22 at an appropriate speed.

  A strain gauge 80 as a vibration detection unit is attached to the cradle 23. Although the attachment position of the strain gauge 80 is not particularly limited, in the present embodiment, the strain gauge 80 is provided on one side of a pair of cradle arms that sandwich the package 30. An output value signal (vibration intensity signal) of the strain gauge 80 is sent to the motor control unit 54.

  The motor control unit 54 is configured by hardware including, for example, a CPU, a RAM, and a ROM, and a program stored in the ROM. The motor control unit 54 is configured to receive a vibration strength signal from the strain gauge 80 and to send an operation control signal to the drum drive motor 53.

  The motor control unit 54 includes a comparison unit 56 that compares the vibration strength signal with a predetermined strength, a speed increase unit 57 that transmits a speed increase signal to the drum drive motor 53, and a speed reduction signal to the drum drive motor 53. And a speed reduction unit 58 for transmission. Based on the comparison result of the comparison unit 56, the motor control unit 54 performs speed-up control of the drum drive motor 53 by the speed increase unit 57, or performs speed reduction control of the motor control unit 54 by the speed reduction unit 58.

  Next, the control flow of this embodiment will be described with reference to FIG. FIG. 2 shows a flowchart of the yarn winding speed control of this embodiment.

  First, when a new winding bobbin 22 (empty paper tube) is set in the cradle 23, the winding bobbin 22 is threaded by unillustrated threading means and winding is started.

  After starting winding, the unit controller 50 sends a signal to the motor controller 54 to increase the winding speed until a predetermined speed (touch winding setting speed) lower than normal is reached (S101).

  When the winding speed reaches the touch winding setting speed, the touch winding control is started. Specifically, first, the comparison unit 56 of the motor control unit 54 compares the vibration strength signal from the strain gauge 80 with a predetermined value (S102). If the vibration strength signal is equal to or less than the predetermined value, it is determined that there is room for increasing the rotational speed, and the speed increasing process is performed (S103 to S105). When the vibration intensity signal is larger than a predetermined value, a deceleration process is performed to keep the vibration intensity below a predetermined value (S106 to S108).

  Note that if the predetermined value used for comparison in the determination of S102 is too large, the vibration of the cradle 23 becomes large, the package 30 is damaged, and the quality is deteriorated. On the other hand, if the predetermined value is too small, the rotational speed cannot be increased so much that the productivity is lowered. Therefore, an appropriate value is set in advance as the predetermined value in consideration of the above circumstances.

  Steps S103 to S105 are processing for increasing the winding rotation speed of the package 30, and correspond to the function of the speed increasing portion 57. That is, when the vibration strength signal is equal to or smaller than the predetermined value in the determination of S102 (comparison by the comparison unit 56), the rotational speed of the drum drive motor 53 is increased until the vibration strength signal becomes larger than the predetermined value. Is repeatedly increased by a predetermined speed (S103, S104). When the vibration intensity signal becomes larger than the predetermined value, the rotation speed of the drum drive motor 53 is reduced to the immediately preceding rotation speed (that is, the rotation speed at which the vibration intensity signal has been determined to be equal to or less than the predetermined value) ( S105), the speed increasing process is terminated.

  Steps S <b> 106 to S <b> 108 are processing for decelerating the winding rotation speed of the package 30, and correspond to the function of the decelerating unit 58. That is, if the vibration strength signal is greater than the predetermined value in the determination of S102 (comparison by the comparison unit 56), the rotation speed of the drum drive motor 53 is continued until the vibration strength signal becomes equal to or less than the predetermined value. Is repeated by a predetermined speed (S106, S107). When the vibration intensity signal becomes equal to or less than the predetermined value, the rotational speed of the drum drive motor 53 is maintained at the same speed (S108), and the deceleration process is terminated.

  Regardless of whether the speed increasing process or the speed reducing process is performed, the end of the winding operation is determined when the process ends (S109). In this process, it is checked whether the winding length from the beginning of winding the yarn around the empty winding bobbin 22 has reached a predetermined length. When the winding length is equal to or longer than the predetermined length, it means completion of the package 30. Therefore, winding end processing is performed and the flow is ended. If the winding length is less than the predetermined length, the process returns to S102 to continue the winding operation.

  When returning to S102, the motor control unit 54 checks the strength of the vibration again and compares it with a predetermined strength, and performs a speed increasing process or a speed reducing process according to the comparison result. Here, the package 30 generally becomes stable in rotation as the yarn is wound and thickened. Therefore, even if the winding speed has not been realized because the vibration strength exceeds a predetermined value before, the vibration strength is increased when the winding diameter is increased again after the package diameter is increased. Often stays below the predetermined value. As a result, by repeating the processing from S102 to S109, the winding rotation speed can be gradually increased from the touch winding setting speed as the package 30 becomes thicker. Note that the loop of S102 to S109 can be executed not only during the so-called touch winding period at the beginning of winding but also after reaching the normal winding speed. The normal winding speed is a target winding speed that is input when the operator operates an input device (not shown) at the start of winding.

  Next, a second embodiment of the present invention will be described. FIG. 3 shows a schematic diagram of the configuration of the winder unit 10 provided in the automatic winder according to this embodiment. In the following description, the same or similar components as those in the first embodiment described above may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.

  In the present embodiment, the winding unit main body 16 included in the winder unit 10 includes a cradle 23 configured to be able to rotatably grip the winding bobbin 22, and an arm-type traverse device 11 for traversing the spun yarn 20. And a contact roller 45 that can be driven and rotated in contact with the peripheral surface of the winding bobbin 22 or the peripheral surface of the package 30. The cradle 23 is configured to be rotatable about a rotation shaft 46, and the increase in the yarn layer diameter due to the winding of the spun yarn 20 around the winding bobbin 22 can be absorbed by the rotation of the cradle 23. It is configured as follows.

  A package drive motor 55 is attached to a portion of the cradle 23 that sandwiches the take-up bobbin 22, and thereby the take-up bobbin 22 is rotationally driven to take up the spun yarn 20. The operation of the package drive motor 55 is controlled by a motor control unit (rotational speed control unit) 54.

  An analog angle sensor 83 for detecting the angle (rotation angle) of the cradle 23 is attached to the rotation shaft 46. Since the angle of the cradle 23 changes as the package 30 becomes thicker, the diameter of the yarn layer of the package 30 can be detected by detecting the rotation angle of the cradle 23 by the angle sensor 83. Thereby, the traverse device 11 is controlled according to the package yarn diameter, whereby the yarn can be traversed appropriately.

  In the present embodiment, the angle sensor 83 is also used as a vibration detection unit that detects the vibration of the cradle 23. The angle sensor 83 is configured to transmit the detected angle signal to the comparison unit 56 of the motor control unit 54.

  The traverse device 11 is provided in the vicinity of the contact roller 45. The traverse device 11 includes an elongated arm member 42 configured to be rotatable around a support shaft, a hook-shaped traverse guide 41 formed at the tip of the arm member 42, and a traverse guide that drives the arm member 42. And a drive motor 43. The arm member 42 is reciprocally swung as indicated by the arrow in FIG. 3 by the traverse guide drive motor 43 to traverse the spun yarn 20. The operation of the traverse guide drive motor 43 is controlled by the unit controller 50.

  In the motor control unit 54, the comparison unit 56 compares the fluctuation amplitude of the angle signal from the angle sensor 83 with a predetermined amplitude. Based on the comparison result, the motor control unit 54 controls the speed increase of the package drive motor 55 by the speed increasing unit 57 or controls the speed reduction of the package drive motor 55 by the speed reducing unit 58. With the above configuration, the vibration of the cradle 23 can be detected using the existing angle sensor 83.

  In addition, the motor control unit 54 includes a progress level acquisition unit 59 that acquires the degree of progress after starting to wind the yarn around the empty winding bobbin 22. The progress degree acquisition unit 59 is configured to receive the angle of the cradle 23 that rotates as the package 30 becomes thicker from the angle sensor 83 and thereby acquire the degree of progress of winding.

  Next, the control flow of this embodiment will be described with reference to FIG. FIG. 4 shows a flowchart of the yarn winding speed control of this embodiment.

  When winding is started, the unit controller 50 increases the winding speed until a predetermined speed (touch winding setting speed) lower than normal is reached (S201).

  When the winding speed reaches the touch winding setting speed, the touch winding control is started. Specifically, first, the comparison unit 56 of the motor control unit 54 compares the amplitude of fluctuation of the angle signal from the angle sensor 83 with a predetermined amplitude (S202).

  From the angle sensor 83, for example, an analog voltage signal as shown in FIG. An example of an angle signal when the vibration of the cradle 23 is small is shown on the upper side of FIG. 5, and an example of an angle signal when the vibration is large is shown on the lower side. Comparing the upper and lower graphs, it can be seen that when the vibration is large, the amplitude A of the fluctuation of the angle signal is also clearly large. Therefore, by comparing the amplitude of the voltage signal from the angle sensor 83 with a predetermined amplitude, it can be determined whether or not the intensity of vibration of the cradle 23 is equal to or less than a predetermined value.

  Steps S203 to S205 are processing for increasing the winding rotation speed of the package 30. That is, if the angle signal amplitude is less than or equal to the predetermined amplitude as determined in S202, the speed increasing unit 57 sets the rotation speed of the package drive motor 55 to the predetermined speed until the angle signal amplitude becomes greater than the predetermined amplitude. The process of increasing only by (S203, S204) is repeated. When the amplitude of the angle signal becomes larger than the predetermined amplitude, the rotational speed of the package drive motor 55 is reduced to the previous rotational speed (S205), and the speed increasing process is terminated.

  On the other hand, when the amplitude of the angle signal is larger than the predetermined amplitude in the determination in S202, it is determined whether or not the touch winding is finished (S206). This determination is performed by the progress degree acquisition unit 59 monitoring the angle signal from the angle sensor 83 and detecting that the rotation angle of the cradle 23 has become a predetermined angle or more. If it is determined in S206 that the touch winding has not been completed (that is, if the formation of the yarn layer is insufficient), the winding speed is reduced in order to keep the vibration intensity below a predetermined value. Processing is performed (S207 to S209). On the other hand, if it is determined that the touch winding has already been completed, an alarming means such as a lamp or a buzzer notifies the operator that the vibration is large and alerts the operator (S210). Skip.

  Steps S207 to S209 are processing for reducing the winding rotational speed of the package 30. That is, if the angle signal amplitude is greater than the predetermined amplitude in the determination of S202, the process of decreasing the rotational speed of the package drive motor 55 by the predetermined speed is repeated until the angle signal becomes equal to or smaller than the predetermined amplitude. (S207, S208). When the angle signal becomes equal to or smaller than the predetermined amplitude, the rotational speed of the package drive motor 55 is maintained at the same speed (S209), and the deceleration process is terminated.

  In this embodiment, the touch winding end determination (S206) is performed before the deceleration processing (S207 to S209), and the deceleration processing is executed only when the touch winding is not completed. That is, since the rotation of the package 30 may become particularly unstable during a period (touch winding period) that is less than or equal to a predetermined winding progress from the beginning of winding, both speed increase processing and speed reduction processing are performed. Then, after the end of the touch winding period, the yarn layer is formed to some extent and the vibration of the package 30 is stabilized, so the deceleration process is not executed and only the acceleration process is performed. In this way, by not performing the deceleration process except during the touch winding period, it is possible to prevent the yarn from being wound at a low-speed rotation that is not intended by the producer. 30 can be wound up.

  Further, in this embodiment, every time the acceleration process or the deceleration process is completed, the system waits for a predetermined time with the rotation speed at that time (S211). For example, the waiting time may be about 5 seconds. In this embodiment, the standby is performed in this embodiment because the rotation drive of the package 30 and the traverse drive of the traverse device 11 are independent, so that the time for allowing the traverse speed to follow the change in the winding speed of the package 30 is set. This is to ensure

  When waiting for a predetermined time is finished, a winding end determination is made (S212). If it is determined that a predetermined length of yarn has been wound, the winding end processing is performed to end the flow. On the other hand, if the winding length is less than the predetermined length, the process returns to S202 to continue the winding operation. .

  As described above, the winder unit 10 included in the automatic winder according to the first and second embodiments includes the cradle 23 that rotatably supports the package 30 and the strain gauge that detects the vibration strength of the cradle 23. 80 or an angle sensor 83, and a motor control unit 54 that controls the rotational speed of the package 30. The motor control unit 54 monitors the vibration of the cradle 23 by the strain gauge 80 or the angle sensor 83 and controls the rotational speed of the package 30 according to the detected vibration intensity.

  As a result, the rotational speed of the package 30 can be appropriately controlled within a range in which vibration does not become excessive, so that the productivity of the package can be improved.

  Further, the motor control unit 54 compares the strain intensity detected by the strain gauge 80 or the angle sensor 83 with a set strength, and the comparison by the comparison unit 56 shows that the strain gauge 80 or the angle sensor And a speed increasing portion 57 that increases the rotational speed of the package 30 when the strength of vibration detected by the head 83 is equal to or lower than the set strength.

  As a result, the speed can be increased to the limit within a range where vibration is not excessive. In particular, the speed can be increased quickly while preventing the package 30 from fluttering excessively at the time of speed increase at the start of winding. Therefore, the productivity of the package can be improved.

  In addition, the motor control unit 54 reduces the rotational speed of the package 30 when the strength of vibration detected by the strain gauge 80 or the angle sensor 83 exceeds the set strength as a result of comparison by the comparison unit 56. A portion 58 is provided.

  As a result, when excessive vibration occurs or when there is a fear of this, the operation can be continued by reducing the rotational speed of the package 30 to a speed at which the vibration falls within an allowable range. Therefore, it is possible to prevent the package 30 from being damaged by vibration and deteriorating the quality. Moreover, productivity can be improved compared with the structure which performs winding stop at the time of abnormality.

  In addition, the motor control unit 54 includes a progress level acquisition unit 59 that acquires a winding progress level from the start of winding of the package 30. And the deceleration part 58 is comprised so that the rotational speed of the package 30 may be decelerated only when the winding progress degree acquired by the progress degree acquisition part 59 is below a predetermined progress degree.

  Thereby, for example, at the start of winding where excessive flutter is likely to occur due to the eccentricity of the winding bobbin 22 of the package 30, the speed reduction control is performed, so that deterioration of the quality of the package 30 due to excessive vibration can be prevented. That is, the automatic winder of the above embodiment determines whether or not the touch winding at which the rotation speed of the package 30 is set low has been completed before the deceleration control, and determines the winding progress from the beginning of the package 30. Judgment is made by acquiring. When the acquired winding progress is equal to or less than a predetermined progress, that is, when the touch winding is not finished, the deceleration processing is executed according to the vibration intensity of the cradle 23. Yes. As a result, in the automatic winder according to the above-described embodiment, it is possible to appropriately prevent deterioration in the quality of the package 30 due to excessive vibration during touch winding that is likely to cause flapping.

  On the other hand, after the winding has progressed to a certain extent and a sufficient yarn layer is formed on the package 30, that is, after the touch winding is completed, the vibration damping effect by the yarn layer can be expected, so deceleration control is not performed. As a result, it is possible to prevent the yarn from being wound at a low-speed rotation unintended by the producer after the end of the touch winding, so that the winding speed can be increased to the limit and the package 30 can be wound. Efficiency can be improved.

  The automatic winder of the first embodiment and the second embodiment detects the intensity of vibration of the cradle 23 that supports the rotating package 30 by the strain gauge 80 or the angle sensor 83, and the detected winder. And the step of controlling the rotational speed of the package 30 in accordance with the strength of vibration.

  Thereby, since the rotation speed of the package 30 can be appropriately controlled within a range in which the vibration is not excessive, productivity can be improved.

  Although the preferred embodiment of the present invention has been described above, the above configuration can be changed as follows, for example.

  In addition to the above configuration, the vibration detection unit can detect the vibration of the cradle 23 (or the package 30 sandwiched by the cradle 23) using, for example, an acceleration sensor. In this case, it is preferable to install the acceleration sensor at the tip of the cradle 23 that easily detects acceleration.

  The attachment position of the vibration detection unit is not particularly limited, and can be installed on the winding unit main body 16 as long as vibration can be detected. However, from the viewpoint of measuring a location close to the package 30, it is preferable to arrange a vibration detection unit in the vicinity of the cradle 23 or on the cradle 23.

  The detection of whether or not the vibration strength is below a predetermined value (whether or not it is within an allowable range) is performed by, for example, frequency analysis of a vibration strength signal instead of simply comparing the vibration strength with a predetermined value. To change the configuration to compare a specific frequency component with a predetermined strength.

  When the intensity of vibration exceeds a predetermined value, the deceleration process is executed. On the other hand, when it is less than the predetermined value, the speed increasing process is not executed. In this case, since control in the direction of increasing vibration (acceleration control) is not performed, this is particularly suitable when forming a package 30 that requires high quality.

  Whether or not to execute each of the acceleration process and the deceleration process described above, or whether or not to execute the deceleration process after the end of the touch winding can be appropriately set by the operator. This configuration is advantageous in that appropriate winding speed control can be performed according to the situation.

  The touch winding end determination in S206 of FIG. 4 is not limited to the case where the package yarn layer diameter is measured by the angle sensor 83. For example, the winding time reaches a predetermined length or the winding length of the yarn reaches a predetermined length. It may be determined that the touch winding has ended when exceeding.

  The vibration setting strength and the touch winding end condition can be appropriately set by an operator. This configuration is advantageous in that the conditions can be flexibly changed in accordance with the installation status of the automatic winder.

  The comparison with the set strength by the comparison unit 56 may determine that the vibration strength detected by the vibration detection unit exceeds the set strength even if it exceeds the set strength for a moment. It may be determined that the set strength is exceeded when the set strength is exceeded for a predetermined time.

  Even when the arm-type traverse device 11 is used as in the second embodiment, if the responsiveness of the traverse device 11 is good and the traverse delay is not a problem, the speed increase control is performed without performing the standby processing in S211. Further, deceleration control may be performed. Further, even when the yarn is traversed by the winding drum 24 as in the first embodiment, the standby for a predetermined time may be performed.

  In the second embodiment, the winder unit 10 including the arm-type traverse device 11 and the package drive motor 55 that rotationally drives the package 30 has been described. However, the winder unit 10 may be configured so that the spun yarn 20 is traversed by a belt-type traverse device instead of the arm-type traverse device 11. Further, instead of providing the package drive motor 55, a drive motor that rotationally drives the contact roller 45 may be provided, and the package 30 may be rotationally driven following the rotational drive of the contact roller 45.

  In the first embodiment and the second embodiment, the unit control unit 50 does not perform the speed increase control and the speed reduction control according to the vibration of the cradle 23 until the touch winding set speed is reached. Even if it exists, you may make it perform acceleration control and / or deceleration control. At this time, the period during which the acceleration control and the deceleration control are performed can be appropriately selected.

  In the first embodiment and the second embodiment, the speed increase control can be continuously executed even after reaching the normal winding speed. However, after reaching the normal winding speed, the winding operation is continued while maintaining the target winding speed without performing speed increase control and deceleration control according to the vibration intensity of the cradle 23. You may do it. Alternatively, the maximum winding speed of the automatic winder is set in advance, and even after reaching the normal winding speed, the vibration of the cradle 23 is within the range where the winding speed is within the maximum possible winding speed. The winding speed may be controlled to increase according to the strength.

  The configuration of the above embodiment is not limited to an automatic winder, and can be applied to other yarn winding devices such as a spinning device.

Schematic of the winder unit with which the automatic winder which concerns on the 1st Embodiment of this invention was equipped. The flowchart of the yarn winding speed control in the automatic winder of 1st Embodiment. The schematic diagram of the winder unit with which the automatic winder concerning a 2nd embodiment was equipped. The flowchart of the yarn winding speed control in the automatic winder of 2nd Embodiment. The graph which shows the example of the angle signal from an angle sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Winder unit 16 Winding unit 23 Cradle 30 Package 50 Unit control part 54 Motor control part (rotation speed detection part)
56 Comparison unit 57 Speed increase unit 58 Deceleration unit 59 Progress level acquisition unit 80 Strain gauge
83 Angle sensor (vibration detector)

Claims (5)

A cradle that rotatably supports the package;
A vibration detector for detecting the strength of vibration of the cradle;
A rotation speed control unit for controlling the rotation speed of the package;
With
The yarn winding device, wherein the rotation speed control unit monitors vibration of the cradle by the vibration detection unit, and controls the rotation speed of the package according to the detected strength of vibration. The yarn winding device according to claim 1,
The rotational speed controller is
A comparison unit that compares the strength of vibration detected by the vibration detection unit with a set strength;
As a result of comparison by the comparison unit, when the intensity of vibration detected by the vibration detection unit is equal to or less than a set strength, a speed increasing unit that increases the rotational speed of the package;
A yarn winding device comprising: The yarn winding device according to claim 2,
The rotational speed control unit includes a deceleration unit,
The speed reduction unit reduces the rotational speed of the package when the strength of vibration detected by the vibration detection unit exceeds a set strength as a result of comparison by the comparison unit. The yarn winding device according to claim 3,
The rotational speed control unit includes a winding progress acquisition unit that acquires a winding progress from the start of winding of the package,
The yarn winding device, wherein the speed reduction unit reduces the rotational speed of the package only when the winding progress acquired by the winding progress acquiring unit is equal to or less than a predetermined progress. Detecting the strength of vibration of the cradle supporting the rotating package;
Controlling the rotational speed of the package according to the detected vibration intensity;
A yarn winding method comprising:

Images