JP2018070354A - Traverse device and thread winding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce vibrations occurring upon inversion of a thread being traversed.SOLUTION: A traverse device 12 adapted for traversing a plurality of threads Y in a traverse direction comprises a plurality of traverse guides 14 that are provided separately for a plurality of threads Y and reciprocate in the traverse direction in a state of holding threads Y, a drive device 20 that has a movable part 22 on which traverse guides 14 are attached so that the movable part 22 reciprocates in the traverse direction, and a control device that controls the operation of the drive device 20. The drive device 20 is provided in a plural number. The control device is to control a plurality of drive devices 20 such that the movable parts 22 of some drive devices 20 out of a plurality of drive devices 20 invert into one direction and simultaneously the movable parts 22 of at least some of the remaining drive devices 20 invert into the other direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a traverse device for traversing a yarn and a yarn winding device including the traverse device.

  For example, Patent Document 1 discloses a type in which a traverse guide is attached to an endless belt as a traverse device for traversing a yarn when winding the yarn around a bobbin to form a package. In this traverse device, the pulley around which the endless belt is wound repeatedly rotates in the forward and reverse directions, so that the portion of the endless belt where the traverse guide is attached reciprocates in the traverse direction and is thereby held by the traverse guide. It is configured to be able to traverse the thread that has been used.

JP 2006-108073 A

  As described above, when the movable portion (endless belt in Patent Document 1) to which the traverse guide is attached is configured to traverse the yarn by reciprocating in the traverse direction, when the yarn is reversed, that is, When the movable part is reversed, vibration is generated due to the inertia of the movable part. In recent years, in order to improve the production efficiency of the package, the yarn winding speed has been increased, and the traverse speed has been increased accordingly. For this reason, the inertia of the movable part at the time of reversal becomes larger than before, and the above-described vibration cannot be ignored.

  In view of the above-described problems, an object of the present invention is to provide a traverse device capable of reducing vibrations generated when a traversed yarn is reversed.

  The traverse device according to the present invention is a traverse device for traversing a plurality of yarns in the traverse direction, and is provided individually for the plurality of yarns and reciprocates in the traverse direction while holding the yarns. A plurality of traverse guides, a movable unit to which the traverse guides are attached, a drive unit that reciprocates in the traverse direction, and a control unit that controls the operation of the drive unit, and A plurality of driving devices are provided, and the control device simultaneously reverses at least one of the plurality of driving devices, and at least the remaining one of the plurality of driving devices. The plurality of driving devices are controlled such that the movable parts of some driving devices are reversed in the other direction.

  In the present invention, there are provided a plurality of drive devices having movable parts to which traverse guides are attached, and when the movable parts of some of the drive devices are reversed, at least some of the movable parts of the drive devices are Reverse in reverse direction. Therefore, the impact caused by the inertia when these movable parts are reversed is offset, and the vibration generated when the yarn is reversed can be reduced.

  Further, in the present invention, the number of the remaining at least some of the driving devices in which the movable parts of the some driving devices are reversed in one direction and the movable parts are reversed in the other direction is It is good that it is the same number as some drive units.

  By doing so, the impact due to inertia when the movable part is reversed is more effectively offset, and the vibration generated when the yarn is reversed can be further reduced.

  In the present invention, a plurality of the traverse guides may be attached to one movable portion.

  According to such a configuration, it is possible to drive a plurality of traverse guides with a single driving device, so that the number of driving devices can be reduced and costs can be reduced.

  In the present invention, it is preferable that the same number of traverse guides are attached to the movable parts of the plurality of drive devices.

  In this way, if the number of traverse guides attached to the movable part of each drive device is the same, the impact due to the inertia of the traverse guide can be reliably canceled when the movable part is reversed, and the vibration generated when the yarn is reversed. Can be more effectively reduced.

  Further, in the present invention, an even number of the traverse guides are provided, and the plurality of driving devices include the first driving device having the movable portion to which half of the even number of traverse guides are attached, and the even number. It is preferable that the second driving device has the movable portion to which the remaining half of the traverse guides are attached.

  By using two drive devices in this manner, the number of drive devices can be minimized, and the cost can be effectively reduced. Further, by attaching the same number of traverse guides to the movable parts of the respective driving devices, it is possible to more effectively reduce the vibration that occurs when the yarn is reversed.

  In the present invention, the plurality of driving devices may be arranged in a line in the traverse direction.

  If a plurality of drive devices are arranged in a row, it is possible to prevent a moment from acting on the traverse device when the plurality of movable parts are reversed in the opposite directions, and to further effectively reduce the vibration generated when the yarn is reversed. be able to.

  In the present invention, the driving device may be a linear motor, and the movable portion may be a movable element of the linear motor.

  For example, in a traverse device in which a traverse guide is attached to a belt that is an elastic body, the behavior of the belt and the behavior of the traverse guide are not exactly the same as the deformation that occurs in the elastic body, and there is a limit to improving the accuracy of traverse control. there were. In that respect, if a linear motor is used, the behavior of the mover and the behavior of the traverse guide can be matched, and the accuracy of traverse control can be improved.

  In the present invention, the traverse speed for traversing the yarn is preferably 8 m / min or more.

  In such a traverse device that performs a relatively high-speed traverse, the present invention is particularly effective because vibrations at the time of reversal of the movable part tend to increase.

  The yarn winding device according to the present invention is characterized in that a package is formed by winding a plurality of yarns traversed by any of the traverse devices.

  In such a yarn winding device, the vibration in the traverse device can be reduced, so that the quality of the package can be improved.

It is a schematic diagram of the spinning take-up device according to the present embodiment. It is an enlarged view which shows the detail of a traverse apparatus. It is a graph which shows typically position control of a needle. It is a schematic diagram which shows operation | movement of a needle | mover. It is a schematic diagram which shows the structure of the traverse apparatus in other embodiment. It is a graph which shows typically position control of a needle in other embodiments.

(Spinning take-up device)
An example of an embodiment of the present invention will be described. FIG. 1 is a schematic view of a spinning take-up device according to this embodiment. The spinning take-up device 1 forms a plurality of packages P by winding a plurality of synthetic fiber yarns Y spun from the spinning device 100 onto a plurality of bobbins B, respectively. In addition, the up-down and front-back directions shown in FIG. 1 are defined as the up-down and front-back directions of the spinning take-up device 1, respectively.

  The spinning take-up device 1 includes godet rollers 3 and 4, a yarn winding device 5 and the like. In the spinning device 100, a polymer supplied from a polymer supply device (not shown) including a gear pump or the like is pushed downward from a spinneret (not shown). A plurality of yarns Y spun from the spinning device 100 are aligned in the direction perpendicular to the paper surface of FIG. 1 and are aligned with the godet rollers 3 and 4 in a state of being arranged at appropriate intervals by a yarn path guide (not shown). Drive on the yarn path. Further, the plurality of yarns Y are distributed in the front-rear direction from the godet roller 4, and are wound around the plurality of bobbins B by the yarn winding device 5.

  The yarn winding device 5 includes a machine base 7, a turret 8, two bobbin holders 9, a support frame 10, a contact roller 11, a traverse device 12, a control device 16, and the like. The yarn winding device 5 rotates a bobbin holder 9 to simultaneously wind a plurality of yarns Y sent from the godet roller 4 around a plurality of bobbins B to form a plurality of packages P.

  A disk-shaped turret 8 is attached to the machine base 7. The turret 8 is rotationally driven around a rotational axis parallel to the front-rear direction by a motor (not shown). Two long cylindrical bobbin holders 9 are supported by the turret 8 in a cantilever manner so as to be rotatable in a posture extending in the front-rear direction. Each bobbin holder 9 is mounted with a plurality of bobbins B arranged in the front-rear direction. By rotating the turret 8, the positions of the two bobbin holders 9 can be switched between the upper position and the lower position. The plurality of yarns Y are wound around the plurality of bobbins B mounted on the bobbin holder 9 at the upper position. When a plurality of yarns Y are wound around the plurality of bobbins B mounted on the bobbin holder 9 in the upper position and a plurality of packages P are formed, the positions of the two bobbin holders 9 are switched up and down. Then, the plurality of yarns Y are wound around the plurality of bobbins B newly attached to the bobbin holder 9 which has come to the upper position.

  The support frame 10 is a long frame-like member extending in the front-rear direction. The support frame 10 is fixedly attached to the machine base 7. A roller support member 13 is attached to the lower portion of the support frame 10 so as to be movable up and down with respect to the support frame 10. The roller support member 13 rotatably supports the contact roller 11 extending along the axial direction of the bobbin holder 9. During winding of the plurality of yarns Y, the contact roller 11 comes into contact with the plurality of packages P supported by the bobbin holder 9 at the upper position, whereby a predetermined contact pressure is applied to the package P and the shape of the package P is adjusted. .

  A traverse device 12 is attached immediately above the contact roller 11 of the support frame 10. The traverse device 12 has a plurality of traverse guides 14 arranged in the front-rear direction. A plurality of yarns Y are respectively hung on the plurality of traverse guides 14. The traverse guide 14 holding the yarn Y reciprocates in the traverse direction (front-rear direction), whereby the yarn Y is wound around the corresponding bobbin B while traversing back and forth around the fulcrum guide 15. Details of the traverse device 12 will be described later.

  The control device 16 controls the operation of each part constituting the yarn winding device 5. Specifically, the control device 16 controls operations of the turret 8, the bobbin holder 9, the traverse device 12, and the like.

  In the present embodiment, the yarn winding device 5 winds eight yarns Y. Correspondingly, eight traverse guides 14 and eight fulcrum guides 15 are provided. However, these numbers can be appropriately changed according to the number of yarns Y wound.

(Traverse device)
FIG. 2 is an enlarged view showing details of the traverse device 12. As shown in FIG. 2, the traverse device 12 according to the present embodiment includes two linear motors 20 as drive devices that drive the traverse guide 14. The two linear motors 20 are arranged in a line in the traverse direction (front-rear direction). The linear motor 20 includes a stator 21 fixed to the support frame 10 and a mover 22 (shown by a thick line) that can move in the front-rear direction with respect to the stator 21. The stator 21 has a track 21a extending in the front-rear direction, and the mover 22 moves in the front-rear direction along the track 21a.

  The stator 21 has a coil (not shown) whose energization state is controlled by the control device 16. On the other hand, the mover 22 has a magnet (not shown). The control device 16 controls the energization state of the coils of the stator 21 so that the mover 22 is fixed to the stator 21 by electromagnetic induction acting between the coil of the stator 21 and the magnet of the mover 22. It is possible to reciprocate back and forth along the track 21a. The configuration of the linear motor 20 is not limited to this, and the stator 21 may have a magnet and the mover 22 may have a coil. Hereinafter, the linear motor 20 disposed on the front side will be represented as 20A, and the linear motor 20 disposed on the rear side will be represented as 20B.

  Four traverse guides 14 are attached to the movable elements 22 of the linear motors 20A and 20B side by side in the front-rear direction. Specifically, the four front traverse guides 14 are attached to the mover 22 of the front linear motor 20A, and are reciprocated in the traverse direction by the linear motor 20A. The four rear traverse guides 14 are attached to the mover 22 of the rear linear motor 20B, and are reciprocated in the traverse direction by the linear motor 20B.

  Here, it is also possible to attach all eight traverse guides 14 to the mover of one linear motor and drive all the traverse guides 14 by this one linear motor. However, in this case, when the mover of the linear motor is reversed at the end of the traverse region, there is a problem that large vibration is generated due to the inertial force of the mover (generally made of metal) having a large mass. In the present embodiment, in order to solve such a problem, a plurality of linear motors 20 for driving the traverse guide 14 are provided. Details will be described below.

  FIG. 3 is a graph schematically showing the position control of the mover 22, and FIG. 4 is a schematic view showing the operation of the mover 22. As shown in FIG. 3, the control device 16 controls the mover 22 of the linear motor 20 </ b> A and the mover 22 of the linear motor 20 </ b> B to reciprocate in opposite phases in the traverse direction (front-rear direction). By controlling in this way, when the time t is t1 and t3, as shown in FIGS. 4A and 4C, the linear motor 20A is positioned so that each traverse guide 14 is positioned at the center of each traverse region. , 20B is located in the center of the moving region in the traverse direction.

  On the other hand, when the time t is t2 and t4, as shown in FIGS. 4B and 4D, the traverse guide 14 attached to the mover 22 of the linear motor 20A is at the end on one side in the traverse direction. At the same time, the traverse guide 14 attached to the mover 22 of the linear motor 20B reverses at the other end in the traverse direction. That is, the mover 22 of the linear motor 20A and the mover 22 of the linear motor 20B are simultaneously reversed in the traverse direction. As a result, the impact caused by the inertia when the mover 22 of the linear motor 20A is reversed and the impact caused by the inertia when the mover 22 of the linear motor 20B are reversed cancel each other, and vibration generated when the mover 22 is reversed is generated. Can be reduced.

  In the traverse device 12 of the present embodiment, the traverse speed of the yarn Y is set to a relatively high speed of 8 m / min (133 mm / sec) or higher. In the traverse device 12 that performs a relatively high-speed traverse in this way, the vibration caused by the reversal of the movable element 22 tends to be particularly large, so the effect of adopting the configuration of the present embodiment is remarkable. However, of course, even when the traverse speed is less than 8 m / min, the configuration of the present embodiment is still effective for reducing vibration.

(effect)
As described above, in the traverse device 12 of the present embodiment, a plurality of drive devices (linear motors 20) having a movable portion (movable element 22) to which the traverse guide 14 is attached are provided. When the 20 movable parts 22 are reversed, the remaining movable parts 22 of at least some of the drive devices 20 are reversed in the reverse direction. Therefore, the impact caused by the inertia when the movable portion 22 is reversed is offset, and the vibration generated when the yarn Y is reversed can be reduced.

  In the present embodiment, the number of the remaining at least some of the drive devices 20 in which the movable portions 22 of some of the drive devices 20 are reversed in one direction and simultaneously the movable portions 22 are reversed in the other direction. Is the same number (one) as the above-mentioned part of the drive devices 20. By doing so, the impact due to inertia when the movable portion 22 is reversed is more effectively offset, and the vibration generated when the yarn Y is reversed can be further reduced.

  In the present embodiment, a plurality of traverse guides 14 are attached to one movable portion 22. According to such a configuration, a plurality of traverse guides 14 can be driven by one driving device 20, so that the number of driving devices 20 can be reduced and the cost can be reduced.

  In the present embodiment, the same number of traverse guides 14 are attached to each movable portion 22 of the plurality of drive devices 20. In this way, if the number of traverse guides 14 attached to the movable part 22 of each drive device 20 is the same, the impact due to the inertia of the traverse guide 14 can be reliably canceled when the movable part 22 is reversed. The vibration generated when Y is reversed can be reduced more effectively.

  Further, in the present embodiment, an even number (eight) of traverse guides 14 are provided, and the plurality of driving devices 20 include a first drive having a movable portion 22 to which half of the even number of traverse guides 14 are attached. The device 20A and a second drive device 20B having a movable portion 22 to which the remaining half of the even number of traverse guides 14 are attached. By using two drive devices 20 in this manner, the number of drive devices 20 can be minimized, and the cost can be effectively reduced. In addition, by attaching the same number of traverse guides 14 to the movable portion 22 of each drive device 20, vibration generated when the yarn Y is reversed can be more effectively reduced.

  In the present embodiment, the plurality of drive devices 20 are arranged in a line in the traverse direction. For this reason, it is possible to prevent a moment from acting on the traverse device 12 when the plurality of movable parts 22 are reversed in the opposite directions, and it is possible to more effectively reduce the vibration generated when the yarn Y is reversed.

  In the present embodiment, the drive device is the linear motor 20, and the movable part is the mover 22 of the linear motor 20. For example, in a traverse device in which a traverse guide is attached to a belt that is an elastic body, the behavior of the belt and the behavior of the traverse guide are not exactly the same as the deformation that occurs in the elastic body, and there is a limit to improving the accuracy of traverse control. there were. In that respect, if the linear motor 20 is used, the behavior of the mover 22 and the behavior of the traverse guide 14 can be matched, and the accuracy of traverse control can be improved. The mover 22 of the linear motor 20 is generally made of metal or the like and has a large mass, so that the inertial force tends to increase. For this reason, the present invention is particularly effective in the case of the linear motor 20.

  In this embodiment, the traverse speed for traversing the yarn Y is 8 m / min or more. In this way, in the traverse device 12 that performs a relatively high-speed traverse, the vibration of the movable portion 22 when it is reversed tends to be large, so that the present invention is particularly effective.

  Moreover, according to the yarn winding device 5 provided with the traverse device 12 of this embodiment, the quality of the package P can be improved by reducing the vibration in the traverse device 12.

(Other embodiments)
The embodiment of the present invention has been described above. However, the form to which the present invention can be applied is not limited to the above-described embodiment, and may be changed as appropriate without departing from the spirit of the present invention, as exemplified below. Can be added.

  In the above embodiment, two linear motors 20 are provided, and at the same time the mover 22 of one linear motor 20A is reversed in one direction, the mover 22 of one linear motor 20B is reversed in the other direction. It was. However, the number of linear motors 20 is not limited to two, and the number of movable elements 22 that are simultaneously reversed in opposite directions may not necessarily be the same. For example, when three or more linear motors 20 are provided, when the mover 22 of the two linear motors 20 is reversed in one direction, at least one other mover 22 is reversed in the other direction. The impact due to the inertia of at least one mover 22 is canceled out, and the effect of reducing vibration is obtained. However, in order to improve the vibration reduction effect, the number of linear motors 20 is an even number, and when the movable elements 22 of the predetermined number of linear motors 20 are reversed, the same number of other linear motors 20 are simultaneously used. It is preferable that the movable element 22 is reversed in the reverse direction.

  A case where four linear motors 30 are provided will be described with reference to FIGS. 5 and 6. In the traverse device 112 shown in FIG. 5, four linear motors 30 are provided, and two traverse guides 14 are attached to the mover 22 of each linear motor 30. When four linear motors 30 (30A to 30D) are provided as described above, a plurality of patterns can be considered as a method for controlling the linear motor 30.

  For example, as shown in FIG. 6A, the linear motors 30A and 30C are controlled in the same phase, the linear motors 30B and 30D are controlled in the same phase, and the linear motors 30A and 30C and the linear motors 30B and 30D are controlled. It is possible to reduce vibration by controlling so that and are in opposite phases (180 degrees out of phase). At this time, the combination of the linear motors 30 controlled in the same phase is not limited to the above.

  Further, as shown in FIG. 6B, the linear motor 30A and the linear motor 30B are controlled so as to be in opposite phases, and the linear motor 30C and the linear motor 30D are controlled so as to be in opposite phases. Good (this combination can be changed as appropriate). In FIG. 6B, the phase difference between the linear motor 30A (or linear motor 30B) and the linear motor 30C (or linear motor 30D) is 90 degrees, but this phase difference is not necessarily 90 degrees. Need not be. In this way, if the number of movable parts 22 that are simultaneously reversed is controlled to be two, the total mass of the movable elements 22 that are reversed at a time can be reduced, so that vibration can be reduced more effectively.

  Moreover, in the said embodiment, although the number of the traverse guides 14 attached to the needle | mover 22 of each linear motor 20 was made into the same number, the number of the traverse guides 14 attached according to the needle | mover 22 may have some difference.

  In the above embodiment, a plurality of traverse guides 14 are attached to the mover 22 of each linear motor 20, but only one traverse guide 14 may be attached to the mover 22.

  In the above embodiment, the plurality of linear motors 20 are arranged in a line in the traverse direction, but this is not an essential requirement. For example, a plurality of linear motors 20 may be arranged in a staggered manner along the traverse direction.

  Moreover, in the said embodiment, although the linear motor 20 was employ | adopted as a drive device in this invention, the form of a drive device is not limited to a linear motor. For example, as a driving device, a configuration using an endless belt as in Patent Document 1 may be employed, or a configuration using a ball screw may be employed.

5: Yarn winding device 12, 112: Traverse device 14: Traverse guide 16: Control device 20 (20A, 20B), 30 (30A-30D): Linear motor (drive device)
21: Stator 22: Movable element (movable part)
Y: Yarn P: Package

Here, it is also possible to attach all eight traverse guides 14 to the mover of one linear motor and drive all the traverse guides 14 by this one linear motor. However, in this case, when the mover of the linear motor is reversed at the end of the moving region, there is a problem that a large vibration is generated due to the inertial force of the mover (generally made of metal) having a large mass. In the present embodiment, in order to solve such a problem, a plurality of linear motors 20 for driving the traverse guide 14 are provided. Details will be described below.

Further, as shown in FIG. 6B, the linear motor 30A and the linear motor 30B are controlled so as to be in opposite phases, and the linear motor 30C and the linear motor 30D are controlled so as to be in opposite phases. Good (this combination can be changed as appropriate). In FIG. 6B, the phase difference between the linear motor 30A (or linear motor 30B) and the linear motor 30C (or linear motor 30D) is 90 degrees, but this phase difference is not necessarily 90 degrees. Need not be. Thus, by controlling so as to two the number of mover 22 for inverting the same time, it is possible to reduce the total mass of the mover 22 to be inverted at a time, can be more effectively reduce the vibration.

Claims (9)

A traverse device for traversing a plurality of yarns in the traverse direction,
A plurality of traverse guides that are individually provided for the plurality of yarns and reciprocate in the traverse direction while holding the yarns;
A drive unit having a movable part to which the traverse guide is attached, and the movable part reciprocally moves in the traverse direction;
A control device for controlling the operation of the driving device;
With
A plurality of the driving devices are provided,
In the control device, the movable portions of some of the plurality of drive devices are reversed in one direction, and at the same time, the movable portions of at least some of the plurality of drive devices are moved. A traverse device that controls the plurality of drive devices so as to be reversed in the other direction.   At the same time that the movable parts of the some drive devices are reversed in one direction, the number of the remaining at least some drive devices in which the movable part is reversed in the other direction is the same as that of the some drive devices. The traverse device according to claim 1, wherein the number is the same.   The traverse device according to claim 1, wherein a plurality of the traverse guides are attached to one movable portion.   4. The traverse device according to claim 1, wherein the same number of traverse guides are attached to each of the movable parts of the plurality of drive devices. 5. An even number of the traverse guides are provided,
The plurality of driving devices include a first driving device having the movable portion to which half of the even number of traverse guides are attached, and the movable portion to which the remaining half of the even number of traverse guides are attached. The traverse device according to claim 4, comprising: a second drive device having the second drive device.   The traverse device according to any one of claims 1 to 5, wherein the plurality of drive devices are arranged in a line in the traverse direction.   The traverse device according to any one of claims 1 to 6, wherein the drive device is a linear motor, and the movable portion is a mover of the linear motor.   The traverse device according to any one of claims 1 to 7, wherein a traverse speed for traversing the yarn is 8 m / min or more. A yarn winding device comprising the traverse device according to any one of claims 1 to 8,
A yarn winding device, wherein a plurality of yarns traversed by the traverse device are wound to form a plurality of packages.

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