JP2012096867A - String retention and extraction system and string winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a string retention and extraction system which can prevent the occurrence of the disorder of retained strings.SOLUTION: The string retention and extraction system has a string retention device 18 and a winding section. The string retention device 18 has a string retention roller 32 having a first string contacting section 32a, and a string passing member 31 which has a second string contacting section 31a and is provided in a direction along a rotation axis of the string retention roller 32. Furthermore, the string retention device 18 alternately passes strings over the first string contacting section 32a and the second string contacting section 31a. The winding section extracts the strings retained in the string retention device 18 in a rotation axis direction of the string retention roller 32 and untangles the strings.

Description

  The present invention mainly relates to a configuration of a yarn storage / drawing device provided in a yarn winding machine.

  In a spinning machine, there is known a yarn storage device that winds a yarn around a yarn storage body (yarn storage roller) and stores the yarn (for example, Patent Document 1).

  Hereinafter, an example of a conventional yarn storage device will be briefly described with reference to FIGS. 11 and 12. As shown in FIG. 11, the conventional yarn storage device 100 has a configuration in which the yarn 20 is spirally wound around the outer peripheral surface of the yarn storage roller 101 and stored. The yarn accumulating roller 101 is rotationally driven by a roller driving motor 102 with its axis as a rotation axis. By rotating the yarn storage roller 101 while the yarn is wound around the yarn storage roller 101, the upstream yarn 20 a can be sequentially wound around the outer peripheral surface of the yarn storage roller 101.

  The newly wound yarn 20a is wound while pushing away the yarn 20 already wound around the yarn accumulating roller 101. Then, the thread 20 that has been pushed away further pushes the adjacent thread 20. In this way, the yarns 20 on the yarn accumulating roller 101 sequentially move toward the side opposite to the side where the new yarn 20a is wound (the right side in FIG. 11) while pressing each other. In the following description, in the axial direction of the yarn accumulating roller 101, the side where the yarn is newly wound (left side in FIG. 11) is referred to as the base end side, and the opposite side (right side in FIG. 11) is referred to as the unwinding side. A portion of the outer circumferential surface of the conventional yarn accumulating roller 101 where the yarn 20 is wound is slightly tapered so that the diameter decreases as the yarn 20 moves toward the unwinding side in order to facilitate the movement of the yarn 20 toward the unwinding side. Is formed. In FIG. 11, for the sake of illustration, the yarns 20 on the yarn accumulating roller 101 are depicted as being spaced apart from each other, but actually the yarns press against each other as described above. Thus, the yarn on the yarn accumulating roller 101 is densely wound.

  On the other hand, Patent Document 2 discloses a configuration in which a yarn storage device is attached to an automatic winder so that winding of a yarn around a package is not stopped at the time of yarn splicing or yarn feeding bobbin replacement. That is, a constant amount of yarn is stored on the yarn storage device even when the supply of yarn from the yarn supply bobbin is temporarily interrupted at the time of yarn splicing or yarn bobbin replacement. Therefore, the winding of the yarn around the package can be continued by winding the yarn on the yarn accumulating device. The yarn storage device provided in Patent Document 2 is different in configuration from the yarn storage device of FIG. 11 but is common in that the yarn is wound around and stored around a yarn storage body (storage unit). .

JP 2010-77576 A JP 2009-244202 A

  In the conventional yarn accumulating device 100 as shown in FIG. 11, the yarn 20 wound around the yarn accumulating roller 101 is wound so that the outer peripheral surface of the yarn accumulating roller 101 is tightened in the circumferential direction as shown in FIG. It will be. Thus, since the yarn 20 tightens the yarn accumulating roller 101, the yarn 20 does not naturally loosen on the surface of the yarn accumulating roller 101.

  By the way, in the yarn accumulating device 100 of FIG. 11, when the rotational speed of the yarn accumulating roller 101 changes or the yarn tension fluctuates on the upstream side of the yarn accumulating roller 101, the yarn accumulating roller 101 is newly wound up. The tension of the yarn 20a will fluctuate. When the tension of the yarn 20a to be wound is high, the yarn 20a is tightly wound around the yarn storage roller 101, and when the tension is low, the yarn 20a is loosely wound around the yarn storage roller 101. In the conventional yarn accumulating device 100, since the yarn on the yarn accumulating roller 101 is not loosened, the portion wound around the yarn accumulating roller 101 (portion wound with high tension) is tightly wound. The part that has been wound loosely (the part that has been wound with a low tension) remains loosely wound.

  As described above, when the tightly wound portion and the loosely wound portion are mixed on the yarn accumulating roller 101, the yarn 20 is easily disturbed on the yarn accumulating roller 101. In addition, let the state where the thread | yarn 20 is wound regularly regularly helically be the state where the thread | yarn 20 is not disordered. Therefore, the state in which the yarn 20 is disturbed means, for example, a state in which a part of the spiral overlaps itself or the pitch of the spiral is irregular.

  For example, if a tightly wound portion and a loosely wound portion are mixed on the yarn accumulating roller 101, when the adjacent yarns 20 are pressed against each other, they are tightly wound under the loosely wound yarn. Disturbances such as sunk in the yarn and the yarns 20 overlap each other.

  When the yarn 20 wound around the yarn accumulating roller 101 is disturbed, when the yarn is unwound from the yarn accumulating device 100, slacking (a phenomenon in which the yarn on the yarn accumulating roller 101 becomes a lump and comes off at once). ) Or thread breakage may occur. Even if sluffing or yarn breakage does not occur, if the yarn 20 on the yarn storage roller 101 is disturbed, the tension when the yarn 20 is unwound from the yarn storage roller 101 becomes non-uniform. Therefore, there is a problem that it is difficult to appropriately control the tension on the downstream side of the yarn storage device 100.

  The yarn disturbance as described above has not been a serious problem in a small-capacity yarn storage device for a spinning machine (the yarn storage device of Patent Document 1). However, compared with a spinning machine, the automatic winder has a higher yarn winding speed, and therefore the yarn is unwound from the yarn storage device. Therefore, the yarn storage device provided in the automatic winder must be configured to store more yarns than in the case of the spinning machine. However, the yarn storage device of the above type is more likely to be disturbed in the yarn wound around the yarn storage body as the amount of stored yarn increases.

  For this reason, there has been a demand for a yarn storage device in which the stored yarn is less likely to be disturbed even if the yarn storage amount is increased in order to be applied to an automatic winder.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a yarn storage / drawing apparatus that can prevent the stored yarn from being disturbed.

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 storage and withdrawal device configured as follows is provided. That is, this yarn storage and withdrawal device has a yarn storage device and a withdrawal device. The yarn accumulating device includes a rotating body having a first yarn contact portion and a yarn passing member having a second yarn contact portion and provided in a direction along the rotation axis of the rotating body. In addition, the yarn storage device alternately stores and stores the yarn over the first yarn contact portion and the second yarn contact portion. The drawing device draws and unwinds the yarn stored in the yarn storage device in the direction of the rotation axis of the rotating body.

  Thus, by rotating the rotating body in a state where the yarn is alternately passed between the rotating body and the thread passing member, the thread alternately passes through the surface of the rotating body and the surface of the thread passing member. At this time, since “tension” and “slack” are given to the yarn between the rotating body and the yarn passing member, the yarn can be stored with a constant tension and a constant pitch.

  In the above-described yarn storage / drawing device, it is preferable that the second yarn contact portion is parallel to a rotation axis of the rotating body.

  Thereby, a thread | yarn can be smoothly routed between a rotary body and a thread | yarn passing member. Further, since the circumference of the yarn wound around the rotating body and the yarn passing member is constant, it is possible to prevent the yarn from loosening.

  In the above-described yarn storage / drawing apparatus, the yarn passing member is preferably a rod-shaped member.

  In this way, the yarn can be stored well by passing the yarn between the rod-shaped member and the rotating body.

  In the above-described yarn storage / drawing device, it is preferable that the cross-sectional shape when the yarn passing member is cut along a plane orthogonal to the longitudinal direction thereof is circular.

  Thereby, in the part which a thread | yarn contacts with a thread | yarn passing member, since the surface shape of the said thread | yarn passing member is not square, it can prevent that a thread | yarn receives damage.

  In the above-described yarn storage and withdrawal device, it is preferable that a rotation support portion that rotatably supports the yarn passing member about the center of the circular cross section is provided.

  By supporting the yarn passing member rotatably in this way, the friction generated between the yarn and the yarn passing member can be reduced, thereby reducing damage to the yarn and suppressing heat generation of the yarn passing member and the yarn. Can do.

  In the above-described yarn storage / drawing device, it is preferable that the rotation support portion is provided with a resistance applying portion that provides resistance to rotation of the yarn passing member.

  As a result, resistance can be applied to the yarn contacting the yarn passing member, so that appropriate “tension” and “loosening” can be given to the yarn between the rotating body and the yarn passing member.

  The above yarn storage / drawing apparatus can also be configured as follows. That is, the rotation support unit is provided with a drive unit that rotationally drives the yarn passing member. And the peripheral speed of the said 2nd thread contact part is set slower than the peripheral speed of the said 1st thread contact part by the said drive part.

  Thus, by rotating the yarn passing member slower than the rotating member, resistance can be given to the yarn that contacts the yarn passing member, so that the yarn between the rotating member and the yarn passing member “Tension” and “Looseness” can be given. The degree of “tension” and “slackness” can be adjusted by appropriately controlling the rotational speed of the yarn passing member by the drive unit, so that the winding state, pitch, etc. of the yarn can be adjusted according to the winding condition of the yarn and the yarn winding. It can be adjusted according to the type.

  In the above-described yarn storage / drawing device, the yarn wound around the rotating body and the yarn passing member is unwound while being guided by a yarn guide disposed on an extension line of the rotating shaft of the rotating body. Can be configured.

  That is, in the case of a yarn storage device configured to wind a yarn around the rotating body, when the yarn is unwound through the yarn guide arranged on the extension line of the rotating shaft, the yarn guide and the periphery of the rotating body are interposed. The yarn is swung around and a balloon is generated, increasing the tension. In this respect, since the yarn storage device of the present invention winds the yarn around the yarn passing member and the rotating body, the yarn trajectory to be swung becomes non-circular, so that the yarn is not swung so much and the generation of the balloon is suppressed. Thus, an increase in tension can be prevented.

  In the above-described yarn storage / drawing device, a plurality of the yarn passing members can be provided.

  By changing the number of yarn passing members, the number of times “tension” and “loosening” are given to the yarn can be changed, so that the winding pitch can be changed.

  In the above-described yarn storage / drawing device, it is preferable that the plurality of yarn passing members are provided on a virtual circle centered on a rotation axis of the rotating body.

  As described above, by disposing the plurality of yarn passing members at the same distance from the rotating body, the unwinding of the yarn can be stabilized.

  In the above yarn storage / drawing apparatus, it is preferable that three yarn passing members are provided.

  That is, it is preferable to use three yarn passing members because the unwinding of the yarn from the yarn accumulating device is particularly stable.

  In the above-described yarn storage / drawing device, it is preferable that the three yarn passing members are arranged at vertices of virtual equilateral triangles in a cross section by a plane orthogonal to the rotation axis of the rotating body.

  Thus, by arranging the three yarn passing members in the shape of an equilateral triangle, the unwinding of the yarn can be further stabilized.

  In the yarn storage / drawing device described above, the cross-sectional shape of the rotating body is circular in a cross section taken along a plane orthogonal to the rotation axis of the rotating body, and the radius is an imaginary shape formed with the three thread passing members as vertices. It is preferable that the length of the perpendicular line from the center of gravity of a typical triangle to each side is longer.

  By arranging the yarn passing member in this way, the yarn can contact the rotating body. Accordingly, a conveying force is applied to the yarn by the rotating body, and the yarn can be stored in the yarn storage device.

  According to another aspect of the present invention, a yarn winding machine having the following configuration is provided. That is, the yarn winding machine includes the above-described yarn storage / drawing device and a yarn supplying unit that supplies the yarn. The yarn accumulating device is disposed between the yarn supplying unit and the drawing device, and stores the yarn supplied from the yarn supplying unit. The drawing device is a winding unit that winds the yarn stored in the yarn storage device to form a package.

  Since this yarn winding machine forms a package by winding the yarn of the yarn storage device of the present invention in which the unwinding tension is stable, a high-quality package can be formed.

The side view of the winder unit with which the automatic winder which concerns on 1st Embodiment of this invention was equipped. The side view of the thread | yarn storage apparatus which concerns on 1st Embodiment of this invention. The typical sectional view of the yarn storage device of a 1st embodiment cut by the plane which intersects perpendicularly with the axis of rotation of the yarn storage roller. 1 is a side cross-sectional view of a yarn storage device according to a first embodiment. The side view of the thread | yarn storage apparatus which concerns on the modification of 1st Embodiment. Side surface sectional drawing of the yarn storage apparatus which concerns on the modification of 1st Embodiment. Side surface sectional drawing of the yarn storage apparatus which concerns on 2nd Embodiment. The typical sectional view of the yarn storage device of a 2nd embodiment cut by the plane which intersects perpendicularly with the axis of rotation of the yarn storage roller. The typical sectional view of the yarn storage device of a 3rd embodiment cut by the plane which intersects perpendicularly with the axis of rotation of the yarn storage roller. Typical sectional drawing of the thread | yarn storage apparatus of 4th Embodiment cut | disconnected by the plane orthogonal to the rotating shaft of a thread | yarn storage roller. The side view of the conventional thread | yarn storage apparatus. The typical sectional view of the conventional yarn storage device cut by the plane which intersects perpendicularly with the axis of rotation of the yarn storage roller.

  Next, an embodiment of the present invention will be described. FIG. 1 is a schematic side view of a winder unit 2 provided in an automatic winder as a yarn winding machine according to a first embodiment of the present invention. The automatic winder of this embodiment has a configuration in which a large number of winder units 2 are arranged side by side. The automatic winder includes an unillustrated machine base management device for centrally managing the winder unit 2 and an unillustrated blower box including a compressed air source and a negative pressure source.

  As shown in FIG. 1, the winder unit 2 mainly includes a yarn supplying unit 7 and a yarn storing and drawing device 5. The winder unit 2 is configured to unwind the yarn (spun yarn) 20 of the yarn feeding bobbin 21 supported by the yarn feeding unit 7 and to wind it around the package 30. FIG. 1 shows a state of the winder unit 2 during normal winding. In this specification, “at the time of normal winding” means that the yarn is in a continuous state between the yarn supplying bobbin 21 and the package 30 and the yarn is unwound from the yarn supplying bobbin 21 so that the yarn is fed to the package 30. The state being wound.

  The yarn supplying section 7 is configured to be able to hold a yarn supplying bobbin 21 for supplying yarn in a substantially upright state. The yarn supplying section 7 is configured to be able to discharge the empty yarn supplying bobbin 21.

  The yarn storage / drawing device 5 includes a winding unit (drawing device) 8 and a yarn storage device 18. The winding unit 8 includes a cradle 23 configured to be capable of mounting the winding bobbin 22, and a traverse drum 24 that traverses the yarn 20 and drives the winding bobbin 22. The yarn storage device 18 is disposed between the winding unit 8 and the yarn supply unit 7 and is configured to temporarily store the yarn supplied from the yarn supply unit 7.

  The traverse drum 24 is disposed opposite to the winding bobbin 22, and the winding bobbin 22 is driven to rotate by rotating the traverse drum 24. As a result, the yarn 20 stored in the yarn storage device 18 can be unwound and pulled out and wound on the winding bobbin 22. Further, a traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and the traverse (traverse) of the yarn 20 with a predetermined width can be performed by the traverse groove. With the above configuration, the yarn 20 can be wound around the take-up bobbin 22 while traversing to form a package 30 having a predetermined length and a predetermined shape. In the following description, the terms “upstream” and “downstream” refer to the upstream and downstream sides when viewed in the yarn traveling direction.

  Each winder unit 2 includes a control unit 25. The control unit 25 includes hardware such as a CPU, ROM, and RAM (not shown) and software such as a control program stored in the RAM. The hardware and software cooperate to control each configuration of the winder unit 2. Moreover, the control part 25 with which each winder unit 2 is provided is comprised so that communication with the said machine stand management apparatus is possible. As a result, the operations of the plurality of winder units 2 included in the automatic winder can be centrally managed in the machine management device.

  The winder unit 2 includes various devices in the yarn traveling path between the yarn supplying unit 7 and the winding unit 8. More specifically, in the yarn traveling path, the unwinding assisting device 10, the lower yarn blowing unit 11, and the first tension applying device 12 are sequentially arranged from the yarn feeding unit 7 side to the winding unit 8 side. The upper yarn catching unit 13, the yarn joining device 14, the yarn trap 15, the cutter 16, the clearer (yarn defect detecting device) 17, the upper yarn drawing unit 48, the yarn accumulating device 18, and the second A tension applying device 19 is disposed.

  The unwinding assisting device 10 brings the movable member 40 into contact with the balloon formed on the upper portion of the yarn supplying bobbin 21 by swinging the yarn 20 to be unwound from the yarn supplying bobbin 21, and appropriately sets the size of the balloon. This is for assisting the unwinding of the yarn 20 by controlling.

  The lower thread blowing unit 11 is an air soccer device disposed immediately downstream of the unwinding assisting device 10 so that the lower thread on the yarn supplying bobbin 21 can be blown toward the yarn joining device 14 side. It is configured. When the yarn 20 is in a divided state between the yarn supplying bobbin 21 and the yarn accumulating device 18, the lower yarn blowing unit 11 can blow up the yarn on the yarn supplying bobbin 21 and guide it to the yarn joining device 14. .

  The first tension applying device 12 applies a predetermined tension to the traveling yarn 20. The first tension applying device 12 of the present embodiment is configured as a gate type in which movable comb teeth are arranged with respect to fixed comb teeth, and a predetermined resistance is provided by running a thread between the comb teeth. Is configured to do. The movable comb teeth are configured to be movable by a solenoid so that the meshing state of the comb teeth can be adjusted. The controller 25 can adjust the tension applied to the yarn by the first tension applying device 12 by controlling the solenoid. However, the configuration of the first tension applying device 12 is not limited to this, and for example, a disk-type tension applying device may be used.

  The upper thread catcher 13 is disposed immediately upstream of the yarn joining device 14. The upper yarn catching unit 13 is connected to a negative pressure source (not shown), and is configured to generate a suction air flow at the time of yarn joining to suck and catch the yarn on the yarn storage device 18 side. Later).

  The yarn trap 15 is disposed upstream of the cutter 16 and immediately downstream of the yarn joining device 14. The tip of the yarn trap 15 is formed as a cylindrical member, is provided close to the traveling path of the yarn 20, and is connected to a negative pressure source (not shown). With this configuration, a suction air flow is generated at the tip of the yarn trap 15, and dust such as fluff adhering to the traveling yarn 20 can be sucked and removed.

  The clearer 17 is configured to detect a yarn defect (yarn defect) such as a slab by monitoring the thickness of the yarn 20. When the clearer 17 detects a yarn defect, the clearer 17 transmits a division signal instructing cutting and removal of the yarn defect to the control unit 25 or the like. In the vicinity of the clearer 17, a cutter 16 for cutting the yarn 20 immediately in accordance with the dividing signal is arranged.

  The upper thread drawing portion 48 is an air soccer device, and is configured to be able to draw out the yarn stored in the yarn storage device 18 and blow it toward the yarn guide member 60 (described later) at the time of yarn joining. Yes.

  The yarn accumulating device 18 includes a substantially cylindrical yarn accumulating roller (rotating body) 32, a yarn passing member 31 for passing the yarn between the yarn accumulating rollers 32, and the axis of the yarn accumulating roller 32 as a rotation axis. And a roller drive motor 33 that rotationally drives. The roller drive motor 33 is controlled by the control unit 25. With this configuration, the yarn storage roller 32 is rotationally driven, whereby the yarn 20 unwound from the yarn supply bobbin 21 can be wound around the yarn storage roller 32 and the yarn passing member and temporarily stored. is there. Then, the yarn wound around the yarn accumulating roller 32 and the yarn passing member is drawn out in the direction along the axis of the yarn accumulating roller 32 and then taken up by the winding unit 8. The detailed configuration of the yarn storage device 18 will be described later.

  The yarn splicing device 14 is used when the clearer 17 detects a yarn defect and cuts the yarn with the cutter 16, when the yarn being unwound from the yarn feeding bobbin 21 is broken, or when the yarn feeding bobbin 21 is replaced. When the yarn 20 between the yarn supplying bobbin 21 and the yarn accumulating device 18 is in a divided state, the yarn on the yarn supplying bobbin 21 side and the yarn on the yarn accumulating device 18 side are 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 second tension applying device 19 applies a predetermined tension to the yarn drawn out from the yarn accumulating device 18, and thereby controls the tension of the yarn 20 when being wound around the winding unit 8. The second tension applying device 19 is configured as a gate type tensioner like the first tension applying device. The controller 25 can adjust the tension applied to the yarn by the second tension applying device 19 by appropriately controlling the solenoid of the second tension applying device 19. However, the configuration of the second tension applying device 19 is not limited to this, and may be, for example, a disk-type tension applying device.

  A magazine-type bobbin supply device 26 is disposed on the front side of the winder unit 2. The bobbin supply device 26 includes a rotary magazine can 27. The magazine can 27 is configured to hold a plurality of spare yarn feeding bobbins 21. The bobbin supply device 26 is configured to supply a new yarn supplying bobbin 21 to the yarn supplying unit 7 by intermittently rotating the magazine can 27. The bobbin supply device 26 includes a yarn end holding unit 28 that sucks and holds the yarn end of the yarn feeding bobbin 21 held by the magazine can 27.

  Next, the yarn splicing operation in the automatic winder of this embodiment will be described.

  That is, when the yarn on the yarn storage device 18 side and the yarn on the yarn supply bobbin 21 side are separated due to yarn breakage, yarn cutting with the cutter 16, or replacement of the yarn supply bobbin 21, the yarn joining is performed. Yarn splicing work by the device 14 is performed. Specifically, the control unit 25 first blows up the yarn 20 on the yarn supplying bobbin 21 side upward by the lower yarn blowing unit 11. The 20 yarns blown up are sucked and captured by the yarn trap 15. The yarn trap 15 is configured to be movable by a yarn trap driving unit 47. The yarn trap 15 is configured such that the yarn on the yarn feeding bobbin 21 side can be introduced into the yarn joining device 14 by moving in a state where the yarn end on the yarn feeding bobbin 21 side is sucked and captured. Yes.

  Before and after this, the control unit 25 blows off the yarn 20 stored in the yarn storage device 18 by the upper yarn drawing unit 48 while rotating the yarn storage roller of the yarn storage device 18 in the reverse direction. A curved tube-shaped yarn guide member 60 is provided at the tip from which the upper yarn drawing portion 48 blows out the yarn 20. The blown yarn 20 is blown into the yarn guide member 60 from one end of the yarn guide member 60 and is guided to the other end side of the yarn guide member 60 by riding on the air flow. An upper thread catcher 13 is disposed at the tip of the outlet on the other end side of the thread guide member 60. With the above configuration, the yarn 20 on the yarn storage device 18 side blown off by the upper yarn drawing portion 48 is sucked and caught by the upper yarn catching portion 13. The tube-shaped thread guide member 60 is formed with a slit along the longitudinal direction thereof, and is configured so that the thread 20 in the thread guide member 60 can be taken out through the slit. Yes. The yarn taken out from the yarn guide member 60 is further sucked by the upper yarn catcher 13 and is introduced into the yarn joining device 14. The control unit 25 stops the reverse rotation of the yarn accumulating roller 32 when the yarn on the yarn accumulating device 18 side is introduced into the yarn joining device 14.

  With the above operation, the yarn on the yarn feeding bobbin 21 side and the yarn on the yarn storage device 18 side can be introduced into the yarn joining device 14. In this state, the control unit 25 operates the yarn joining device 14 to join the yarn on the yarn feeding bobbin 21 side and the yarn on the yarn storage device 18 side. When the yarn splicing operation is completed, the control unit 25 resumes the winding of the yarn around the yarn accumulating device 18 by resuming the normal rotation of the yarn accumulating device 18.

  Even when the yarn between the yarn supplying bobbin 21 and the yarn accumulating device 18 is in a divided state as described above, the winding of the yarn 20 around the package 30 in the winding unit 8 is interrupted. Can continue without. That is, in the automatic winder of the present embodiment, as described above, the yarn storage device 18 is interposed between the yarn supply unit 7 and the winding unit 8, and a certain amount of yarn 20 is stored on the yarn storage device 18. is doing. Since the winding unit 8 is configured to wind the yarn stored on the yarn storage device 18, the supply of the yarn from the yarn supplying bobbin 21 is interrupted for some reason (for example, yarn joining) Even during the operation, the winding of the yarn 20 around the package 30 can be continued.

  Thus, since the winding operation in the winding unit 8 is not interrupted by the yarn joining operation or the like, the package 30 can be generated at high speed and stably. Further, since the yarn accumulating device 18 is interposed between the yarn supplying bobbin 21 and the yarn take-up unit 8 without being affected by fluctuations in tension when the yarn is unwound from the yarn supplying bobbin 21. It can be performed.

  Next, with reference to FIG.2 and FIG.3, the yarn storage apparatus 18 of this embodiment is demonstrated.

  As described above, the yarn accumulating device 18 includes the yarn accumulating roller 32, the yarn passing member 31, and the roller driving motor 33.

  The yarn passing member 31 is formed in a round bar shape and is disposed close to the outer peripheral surface of the yarn accumulating roller 32. Then, as shown in FIGS. 2 and 3, the yarn accumulating device of the present embodiment is arranged so that the yarn 20 is alternately passed between the yarn accumulating roller 32 and the yarn passing member 31 while the yarn 20 is being passed. The yarn storage roller 32 and the yarn passing member 31 are wound around and stored in a substantially spiral shape.

  With this configuration, when the yarn storage roller 32 is rotationally driven, a conveying force in the direction along the rotation direction of the yarn storage roller 32 can be applied to the yarn 20 that is in contact with the surface of the yarn storage roller 32. . As a result, when viewed in the axial direction of the yarn accumulating roller (FIG. 3), the entire yarn 20 wound around the yarn accumulating roller 32 and the yarn passing member 31 is spirally rotated (see FIG. 3). 3 can be rotated in the same direction (the direction indicated by the thick arrow in FIG. 3). As a result, the yarn 20 a on the upstream side of the yarn accumulating device 18 can be sequentially wound around the yarn accumulating roller 32 and the yarn passing member 31.

  As shown in FIG. 3, the yarn 20 stored in the yarn storage device 18 is in the state of contact with the yarn storage roller 32 by the rotation of the yarn storage roller 32, and the rotation direction of the yarn storage roller 32. After being conveyed to the downstream side, the yarn storage roller 32 is once separated from the surface of the yarn accumulating roller 32 toward the yarn passing member 31. The yarn 20 in contact with the yarn passing member 31 is further conveyed toward the downstream side, and again comes into contact with the outer peripheral surface of the yarn accumulating roller 32.

  In this embodiment, the yarn passing member 31 is fixed and is not driven to rotate like the yarn accumulating roller. Accordingly, frictional resistance is imparted to the yarn 20 that circulates in contact with the yarn passing member 31. As a result, the yarn 20 that moves away from the outer peripheral surface of the yarn accumulating roller 32 toward the yarn passing member 31 is pressed by the yarn accumulating roller 32, so that the tension is low, that is, a loose state. . On the other hand, the portion of the yarn 20 from the yarn passing member 31 toward the yarn accumulating roller 32 is in a state of being pulled by the yarn accumulating roller 32, so that the tension is high, that is, the yarn is tensioned.

  Thus, in the yarn accumulating device 18 of the present embodiment, the yarn accumulating roller 32 is rotationally driven, so that “looseness” and “tension” can be given to the accumulated yarn 20. In this way, the yarn 20 is once loosened, and then wound around the yarn accumulating roller 32 while applying tension, so that the same effect as when the yarn is rewound is obtained. As shown in FIG. 2, the yarn 20 on the yarn accumulating device 18 is wound around the yarn accumulating roller 32 and the yarn passing member 31 so as to go around a plurality of times. Accordingly, the above-described “rewinding” can be applied to the yarn 20 on the yarn storage device 18 a plurality of times by rotationally driving the yarn storage roller 32.

  As a result of repeated rewinding in this way, even if there is a tightly wound part (high tension part) or a loosely wound part (low tension part), such tension is uneven. Is quickly eliminated, and the tension of the entire yarn 20 stored in the yarn storage device 18 is made uniform. Therefore, even if the tension of the yarn 20a on the upstream side of the yarn accumulating device 18 fluctuates, the tightly wound portion or the loosely wound portion does not remain on the yarn 20 on the yarn accumulating device 18. Therefore, according to the configuration of the yarn storage device 18 of the present embodiment, the yarn 20 can be stored with a constant tension without being influenced by the tension fluctuation of the upstream yarn 20a.

  As shown in FIG. 2, a yarn guide 29 is disposed on an extension line of the axis of the yarn accumulating roller 32, and the yarn 20 unwound from the yarn accumulating device 18 is taken up by the winding unit via the yarn guide 29. 8 is wound up. As described above, the yarn 20 is pulled out via the yarn guide 29 arranged on the extension line of the axis of the yarn accumulating roller 32. Therefore, the yarn wound around the yarn accumulating roller 32 and the yarn passing member 31 is stored in the yarn accumulating portion. The force pulled in the direction along the axis of the roller 32 is received and unwound in this direction.

  Here, in the conventional yarn storage device 100 of FIG. 11, when the yarn is pulled in the unwinding direction via the yarn guide 29, the yarn can be moved by the pulling force most on the yarn storage roller 101. Only the yarn 20 wound on the side, and the yarn 20 wound closer to the proximal end side of the yarn accumulating roller 101 cannot be moved. This is because, in the conventional yarn storage device 100 of FIG. 11, the yarn 20 is wound so as to tighten the yarn storage roller 101, so that a force for pulling the yarn 20 in the direction along the axis of the yarn storage roller 101 can be transmitted. This is because it cannot be done.

  On the other hand, in the yarn storage device 18 of the present embodiment, as described above, the tension of the stored yarn 20 can be made uniform as a whole, and therefore, the force pulling in the direction along the axis of the yarn storage roller 32 is applied to the yarn storage device 18. The yarn 20 stored in the storage device 18 can be uniformly transmitted. More specifically, when the yarn 20 on the yarn storage roller 32 is pulled out at a predetermined pull-out angle, it is inclined toward the unwinding side with respect to the next layer yarn (the yarn adjacent in the axial direction of the yarn storage roller 32). Giving a pulling force. When the yarn of the next layer is given “loosening” by the “rewinding”, the yarn moves to the unwinding side by the pulling force, and is then tightened by being given “tension”. Further, the yarn of the next layer is similarly wound while moving to the unwinding side. As described above, the “rewinding” is repeated, whereby the tensile force is sequentially propagated.

  Thereby, the yarn 20 wound around the yarn accumulating roller 32 and the yarn passing member 31 can be moved toward the unwinding side entirely by the pulling force. Thus, since the yarn 20 moves toward the unwinding side by the pulling force, the yarn 20a newly wound around the proximal end of the yarn accumulating roller 32 does not have to push away the already wound yarn 20. . That is, in the yarn storage device 18 of the present embodiment, the spirally wound yarns 20 are not pressed against each other, so that the disturbance of the spiral is less likely to occur, and the yarns 20 can be neatly wound and stored. It becomes possible.

  In particular, the pulling force is uniformly transmitted to the entire yarn 20 wound around the yarn accumulating roller 32 and the yarn passing member 31 in a substantially spiral shape, so that the spiral yarn 20 moves toward the unwinding side. In the meantime, the pitch of the spiral is naturally made uniform. Thus, according to the configuration of the present embodiment, the yarn 20 can be wound around the yarn accumulating roller 32 and the yarn passing member 31 in an orderly manner at a uniform pitch.

  As described above, the yarn accumulating device 18 according to the present embodiment can wind the accumulated yarn with a constant tension and a uniform pitch regardless of the tension variation of the upstream yarn. Thereby, the stored yarn 20 is not easily disturbed. Since the yarn 20 is less likely to be disturbed in this way, the yarn storage device 18 can be enlarged and configured to store a large amount of yarn 20.

  Further, since the yarn is stored in an orderly manner on the yarn storage device 18, the tension when the yarn is unwound from the yarn storage device 18 is stabilized. Therefore, the winding unit 8 can wind the yarn 20 around the package 30 with a stable tension on the downstream side of the yarn accumulating device 18, and a high-quality package 30 can be formed.

  Moreover, according to the yarn storage device 18 of the present embodiment, the generation of balloons can be suppressed. That is, in the conventional yarn accumulating device 100 as shown in FIG. 11, a balloon is generated when the yarn spirally wound around the outer periphery of the yarn accumulating roller 101 is pulled out through the yarn guide 29. This balloon is a phenomenon in which a yarn wound spirally on the yarn accumulating roller 101 is swung around the yarn accumulating roller 101 and swells outward when the yarn is drawn in a direction along the axis of the yarn accumulating roller 101. Say. When the yarn is swung around and bulges outside in this way, excessive tension is applied to the yarn 20 due to centrifugal force, and the unwinding of the yarn 20 from the yarn storage roller 101 may become unstable.

  In this respect, in the yarn accumulating device 18 of the present embodiment, “tension” and “loosening” are alternately given to the yarn around the yarn accumulating roller 32, so that the yarn accumulating roller 32 is unwound. The yarn is swung while repeating the stretched part and the loosened part alternately. As a result, the balloon generated when the yarn is unwound from the yarn storage roller 32 becomes unstable, and the balloon can be prevented from becoming large. In the present embodiment, when viewed in the axial direction of the yarn accumulating roller 32 (FIG. 3), the yarn 20 around the yarn accumulating roller 32 and the yarn passing member 31 is wound in a non-circular shape. The balloon does not become larger compared to the case where it is swung into a shape (in the case of the conventional yarn storage device 100 in FIG. 11). As described above, the yarn storage device 18 of the present embodiment can stabilize the tension when the yarn 20 is unwound while suppressing the generation of the balloon.

  Incidentally, a patent document (Japanese Patent Laid-Open No. 7-81843) discloses a feed roller type yarn tension adjusting means comprising both a feed roller that is actively driven and a guide roller that is driven to rotate. This yarn tension adjusting means is similar to the yarn accumulating device 18 of this embodiment in that the roller is driven in a state where the yarn is stretched between the roller and a member close to the roller.

  However, this yarn tension adjusting means is configured to pull out the wound yarn in the tangential direction of the outer peripheral surface of the feed roller, and the yarn storage device 18 of the present embodiment unwinds the yarn in the direction along the axis of the yarn storage roller 32. Is completely different from the technical idea. That is, in the case of a configuration in which the yarn is drawn in the tangential direction of the roller outer peripheral surface, the speed at which the yarn is wound around the roller and the speed at which the yarn is drawn out from the roller must always match. On the other hand, when the yarn is unwound in the direction along the axis of the roller as in this embodiment, the yarn is fed from the roller regardless of the rotational speed of the roller (regardless of the winding speed of the yarn around the roller). It can be pulled out. Because of this property, the yarn accumulating device 18 of the present embodiment is not winding the yarn from the upstream side during yarn splicing work (when the rotation of the yarn accumulating roller 32 is stopped). The yarn can be unwound toward the winding unit 8 on the downstream side.

  Next, the yarn accumulating device 18 of the present embodiment will be described in more detail with reference to FIG.

  The yarn storage roller 32 is made of metal and is configured as a roller-shaped member. In other words, the yarn accumulating roller 32 is formed so that a cross-sectional contour shape when it is cut along a plane orthogonal to the axial direction thereof is circular. At least a part of the yarn accumulating roller 32 is configured as a first yarn contact portion 32a formed in a cylindrical shape (or a columnar shape), and is configured to bring the yarn into contact with the outer peripheral surface thereof. Then, by rotating the yarn storage roller 32 in a state where the yarn is in contact with the first yarn contact portion 32a, the yarn wound around the yarn storage roller 32 and the yarn passing member 31 is circulated as described above. Can be made.

  As described above, in the conventional yarn accumulating device 100 in FIG. 11, the yarn on the yarn accumulating roller 101 is moved to the unwinding side, so that the yarn accumulating roller 101 has a smaller diameter on the unwinding side. It was necessary to form a very small taper. This is because, in the configuration of FIG. 11, the force to move the yarn to the unwinding side is only the force by which the yarn 20 a newly wound around the proximal end side pushes away the old yarn 20. This is because the yarn 20 becomes difficult to move as it leaves (as it goes to the unwinding side). However, when the yarn 20 is wound around the tapered portion as described above, there is a problem that the wound yarn 20 is loosened as it advances toward the unwinding side.

  In this regard, as described above, the yarn storage device 18 of the present embodiment moves the entire yarn 20 toward the unwinding side by uniformly applying a pulling force to the entire stored yarn 20. be able to. Therefore, in the yarn storage device 18 of the present embodiment, the yarn 20 can be moved to the unwinding side even if the yarn storage roller 32 is not tapered. Therefore, in the yarn storage device 18 of the present embodiment, the first yarn contact portion 32a is formed in a cylindrical shape having a uniform diameter (not forming a taper). Thereby, even if the yarn 20 wound around the yarn accumulating roller 32 and the yarn passing member 31 advances to the unwinding side, it does not become loose.

  The yarn passing member 31 is formed with an elongated second yarn contact portion 31 a that contacts the yarn 20. More specifically, the yarn passing member 31 is formed in a round bar shape, and the cross-sectional shape by a plane orthogonal to the longitudinal direction thereof is a circle. And the outer peripheral surface of the said round bar is the 2nd thread contact part 31a.

  With the above configuration, the yarn storage device 18 according to the present embodiment is configured to pass the yarn 20 between the first yarn contact portion 32a of the yarn storage roller 32 and the second yarn contact portion 31a of the yarn passing member 31. It is configured to store.

  Further, when considering the length of the yarn accumulating roller 32 in the rotation axis direction (the length in the left-right direction in FIG. 4), the length of the first yarn contact portion 32a and the length of the second yarn contact portion 31a are: It is comprised so that it may correspond substantially. Thereby, the yarn can be stored using the first yarn contact portion 32a of the yarn storage roller 32 to the maximum extent.

  The longitudinal direction of the yarn passing member 31 (longitudinal direction of the second yarn contact portion 31a) is arranged to be parallel to the axis of the yarn accumulating roller 32. Accordingly, the yarn 20 can be easily passed between the yarn passing member 31 and the yarn accumulating roller 32. Further, since the yarn passing member 31 and the yarn accumulating roller 32 are arranged in parallel, the circumferential length of the 20 yarns that are looped around the yarn accumulating roller 32 and the yarn passing member 31 is always constant. It has become. Thereby, even if the yarn stored in the yarn storage device 18 moves toward the unwinding side, the circumference does not change, so that the yarn 20 does not become slack.

  Although not shown, a storage amount sensor that detects the storage amount of the yarn 20 on the yarn storage device 18 is disposed in the vicinity of the yarn storage roller 32. The detection result of the storage amount sensor is sent to the control unit 25.

  When the control unit 25 detects that the yarn on the yarn storage device 18 has become less than the lower limit, the controller 25 appropriately controls the roller drive motor 33 to increase the rotational speed of the yarn storage roller 32. As a result, the speed at which the yarn 20 is wound around the yarn storage device 18 increases, and as a result, the storage amount of the yarn 20 on the yarn storage device 18 can be gradually increased. On the other hand, when the control unit 25 detects that the yarn on the yarn storage device 18 exceeds the upper limit amount, the controller 25 appropriately controls the roller drive motor 33 to reduce the rotational speed of the yarn storage roller 32. As a result, the speed at which the yarn 20 is wound around the yarn accumulating device 18 is reduced. As a result, the amount of the yarn 20 on the yarn accumulating device 18 can be gradually reduced. By the control as described above, the storage amount of the yarn 20 on the yarn storage device 18 can be maintained at a value not less than the lower limit and less than the upper limit.

  Further, the yarn accumulating device 18 of the present embodiment has a tension applying portion 50 at the unwinding side end portions of the yarn accumulating roller 32 and the yarn passing member 31. The tension applying unit includes a ring-shaped frame 51 and a rubber ring 52.

  The ring-shaped frame 51 is formed in a ring shape, and is fixed to the unwinding side end of the yarn accumulating roller 32 so that the center thereof coincides with the axis of the yarn accumulating roller 32. Thereby, the ring-shaped frame 51 is configured to rotate integrally with the yarn accumulating roller 32.

  As shown in FIG. 4, the ring-shaped frame 51 has a flange portion 51a formed so as to protrude toward the proximal end side. The diameter of the flange 51a is set to be longer than the distance from the central axis of the yarn accumulating roller 32 to the yarn contact surface of the yarn passing member 31. As shown in FIG. 4, the yarn passing member 31 is disposed such that the unwinding side end portion is inserted inside the flange portion 51a in the radial direction.

  A recess 51b is formed on the outer peripheral surface of the flange 51a. A rubber ring (rubber rubber) 52 is attached to the recess 51b. The rubber ring 52 is configured so that the concave portion 51b can be tightened appropriately.

  The yarn accumulating device 18 of the present embodiment is configured to draw out the yarn 20 unwound from the periphery of the yarn accumulating roller 32 and the yarn passing member 31 through the gap 51a and the rubber ring 52. Yes. With this configuration, when the yarn 20 is pulled out from the yarn storage device 18, the yarn 20 is sandwiched between the collar portion 51 a and the rubber ring 52, so that resistance is applied, so that appropriate tension is applied to the drawn yarn 20. can do. Moreover, since resistance is given to the thread | yarn 20 as mentioned above, it can prevent that the thread | yarn 20 is shaken too much and generation | occurrence | production of a balloon can be suppressed.

  As described above, the yarn storage / drawing device 5 of the present embodiment includes the yarn storage device 18 and the winding unit 8. The yarn storage device 18 includes a yarn storage roller 32 having a first yarn contact portion 32a, a yarn passing member 31 having a second yarn contact portion 31a and provided in a direction along the rotation axis of the yarn storage roller 32, Is provided. In addition, the yarn accumulating device 18 alternately stores and accumulates the yarn over the first yarn contact portion 32a and the second yarn contact portion 31a. The winding unit 8 draws and unwinds the yarn stored in the yarn storage device 18 in the direction of the rotation axis of the yarn storage roller 32.

  In this way, by rotating the yarn storage roller 32 in a state where the yarn 20 is alternately passed between the yarn storage roller 32 and the yarn passing member 31, the yarn 20 is brought into contact with the surface of the yarn storage roller 32 and the yarn passing member. It passes alternately with the surface of 31. At this time, since “tension” and “slack” are given to the yarn 20 between the yarn storage roller 32 and the yarn passing member 31, the yarn 20 can be stored with a constant tension and a constant pitch.

  In the yarn storage / drawing device 5 of the present embodiment, the second yarn contact portion 31 a is parallel to the rotational axis of the yarn storage roller 32.

  As a result, the yarn 20 can be easily passed between the yarn storage roller 32 and the yarn passing member 31. Further, since the circumferential length of the yarn 20 wound around the yarn storage roller 32 and the yarn passing member 31 is constant, the yarn 20 can be prevented from loosening.

  Further, in the yarn storage / drawing device 5 of the present embodiment, the yarn passing member 31 is a rod-shaped member.

  Thus, the yarn can be stored well by passing the yarn between the rod-shaped member and the yarn storage roller 32.

  Further, in the yarn storage / drawing device 5 of the present embodiment, the cross-sectional shape when the yarn passing member is cut along a plane orthogonal to the longitudinal direction thereof is circular.

  Thereby, in the part which a thread | yarn contacts with a thread | yarn passing member, since the surface shape of the said thread | yarn passing member is not square, it can prevent that a thread | yarn receives damage.

  Further, in the yarn storage / drawing device 5 of the present embodiment, the yarn 20 wound around the yarn storage roller 32 and the yarn passing member 31 is guided by a yarn guide 29 disposed on an extension line of the rotation shaft of the yarn storage roller 32. It is solved while being done.

  That is, in the case of the yarn storage device configured to wind the yarn 20 around the yarn storage roller 32, when the yarn is unwound through the yarn guide 29 disposed on the extension line of the rotation shaft, the yarn guide 29 and the yarn storage are stored. The yarn is swung around the roller 32 and a balloon is generated to increase the tension. In this respect, since the yarn storage device 18 of the present embodiment winds the yarn around the yarn passing member 31 and the yarn storage roller 32, as a result of the non-circular path of the yarn 20 being swung, the yarn 20 is swung too much. Therefore, the generation of balloons can be suppressed to prevent an increase in tension.

  The automatic winder according to this embodiment includes the above-described yarn storage / drawing device 5 and the yarn supplying unit 7 that supplies the yarn 20. The yarn storage device 18 is disposed between the yarn supplying unit 7 and the winding unit 8 and stores the yarn 20 supplied from the yarn supplying unit 7. The winding unit 8 winds the yarn 20 stored in the yarn storage device 18 to form a package.

  Since the automatic winder forms the package 30 by winding the yarn of the yarn storage device 18 of the present embodiment in which the unwinding tension is stable, the high-quality package 30 can be formed.

  Next, a modification of the first embodiment will be described with reference to FIGS. 5 and 6. The yarn accumulating device 181 included in the yarn accumulating / drawing device according to this modification is obtained by omitting the tension applying unit 50 provided in the yarn accumulating device of the first embodiment. Thus, even if it is the structure which abbreviate | omitted the tension | tensile_strength provision part 50, the effect of this invention, such as suppression of the balloon by the thread | yarn passing member 31, and prevention of thread | strain disturbance, can be exhibited. In the yarn accumulating roller 32 of the yarn accumulating device 181, a tapered portion 32c is formed at the unwinding side end of the first yarn contact portion 32a. This taper part 32c is formed so that a diameter may expand as it approaches the end part side. The taper portion 32c can prevent the yarn on the yarn accumulating roller 32 from coming off from the unwinding side end portion of the yarn accumulating roller 32 at a time.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In the following description, components that are the same as or similar to those in the first embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  In the first embodiment, since the yarn passing member 31 is fixed, excessive friction is generated between the yarn passing member 31 and the yarn 20, and the yarn 20 may be damaged or the yarn passing member. The case where 31 and the thread | yarn 20 generate | occur | produce heat may be considered.

  Therefore, the yarn accumulating device 182 included in the yarn accumulating / drawing device of the present embodiment has a configuration in which the yarn passing member 31 is rotatable. Specifically, it is as follows. In the present embodiment, the yarn passing member 31 is configured as a round bar having a circular cross section, as in the first embodiment. As shown in FIG. 7, the yarn storage device 182 of this embodiment includes a rotation support portion 53 that rotatably supports the yarn passing member 31 with an axis passing through the center of the circular cross section as a rotation axis.

  With this configuration, when the yarn accumulating roller 32 is rotationally driven, the yarn passing member 31 is driven to rotate following the yarn 20 that circulates around the yarn accumulating roller 32 and the yarn passing member 31 as shown in FIG. As a result, compared to the case where the yarn passing member 31 is fixed, the resistance received by the yarn 20 in contact with the yarn passing member 31 can be reduced. As a result, damage to the yarn 20 is suppressed, and the yarn 20 and the yarn passing member 31 generate heat. Can be prevented.

  If the rotation of the yarn passing member 31 is completely free, resistance cannot be given to the yarn that circulates while contacting the yarn passing member 31, so that “slack” and “ It becomes impossible to give “tension”. Therefore, the rotation support portion 53 of this embodiment includes a resistance applying portion that applies a rotation resistance to the rotation of the yarn passing member 31. The resistance applying unit can be configured as a torque limiter, for example. With this configuration, it is possible to impart resistance to the yarn 20 while suppressing damage to the yarn 20.

  Further, the resistance applying unit may be configured as a variable brake mechanism capable of appropriately changing the rotational resistance applied to the rotation of the yarn passing member 31. In this case, it is more preferable that the variable brake mechanism is configured to be controllable by the control unit 25. According to this, the resistance given to the thread | yarn 20 which contacts the thread | yarn passing member 31 can be adjusted. That is, since the strength of “loosening” and “tension” can be adjusted, the winding state of the yarn 20 on the yarn storage device 18 and the pitch of the yarn 20 can be adjusted according to the winding condition of the yarn 20 and the type of the yarn 20. It becomes possible to adjust.

  As described above, the yarn storage device 182 included in the yarn storage and withdrawal device of the present embodiment is provided with the rotation support portion 53 that supports the yarn passing member 31 so as to be rotatable about the center of the circular cross section. ing.

  By thus supporting the yarn passing member 31 in a rotatable manner, friction generated between the yarn 20 and the yarn passing member 31 can be reduced, so that damage to the yarn is reduced and heat generation of the yarn passing member and the yarn is achieved. Can be suppressed.

  Further, in the yarn accumulating device 182 provided in the yarn accumulating / drawing device of the present embodiment, the rotation support portion 53 is provided with a resistance applying portion that provides resistance to the rotation of the yarn passing member 31.

  Accordingly, resistance can be applied to the yarn 20 that contacts the yarn passing member 31, so that appropriate “tension” and “loosening” are given to the yarn 20 between the yarn accumulating roller 32 and the yarn passing member 31. be able to.

  Next, a modification of the second embodiment will be described.

  That is, when the yarn passing member 31 is rotatably supported as in the second embodiment, the rotation support portion 53 is replaced by the yarn passing member 31 instead of the resistance applying portion that applies the rotational resistance to the yarn passing member 31. You may comprise so that the drive part which rotationally drives may be provided. It is more preferable that the operation of the drive unit is configured to be controllable by the control unit 25. If comprised in this way, the resistance given to the thread | yarn which contacts a thread passing member can be adjusted by controlling a drive part suitably and changing the rotational speed of the thread passing member 31. FIG. That is, since the strength of “loosening” and “tension” can be adjusted, the winding state of the yarn 20 on the yarn storage device 18 and the pitch of the yarn 20 can be adjusted according to the winding condition of the yarn 20 and the type of the yarn 20. It becomes possible to adjust.

  However, when the peripheral speed of the portion where the yarn passing member 31 is in contact with the yarn (second yarn contact portion 31a) becomes faster than the peripheral speed of the first yarn contact portion 32a of the yarn accumulating roller 32, the yarn passing member 31 It becomes impossible to give resistance to the thread | yarn 20 which contacts. Therefore, when the rotation support unit 53 is configured to include the drive unit as described above, the drive unit is configured so that the peripheral speed of the second thread contact part 31a is slower than the peripheral speed of the first thread contact part 32a. Drive control is performed.

  As described above, in the yarn accumulating device provided in the yarn accumulating / drawing device according to this modification, the rotation support unit 53 is provided with the driving unit that rotationally drives the yarn passing member 31. And the peripheral speed of the 2nd thread contact part 31a is set slower than the peripheral speed of the 1st thread contact part 32a by the said drive part.

  In this way, by rotating the yarn passing member 31 slower than the yarn accumulating roller 32, resistance can be given to the yarn 20 that contacts the yarn accumulating member 31, so that the yarn accumulating roller 32 and the yarn passing “Tension” and “slack” can be given to the thread between the members 31. The degree of “tension” and “slackness” can be adjusted by appropriately controlling the rotational speed of the yarn passing member 31 by the drive unit, so that the winding state, pitch, and the like of the yarn 20 can be set according to the winding condition of the yarn 20. And can be adjusted according to the type of yarn.

  It is also possible to estimate the amount of yarn wound around the yarn accumulating device based on the driving torque of the drive unit that rotationally drives the yarn passing member 31. That is, when the amount of yarn wound is increased, the driving torque is increased, and when the amount of wound yarn is decreased, the driving torque is decreased. Therefore, by detecting the magnitude of the driving torque, the yarn storage device It is possible to estimate the amount of stored yarn. This eliminates the need for a separate sensor for measuring the yarn amount.

  Subsequently, a third embodiment of the present invention will be described with reference to FIG. In the following description, components that are the same as or similar to those in the first embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  As shown in FIG. 9, the yarn accumulating device 183 included in the yarn accumulating / drawing device according to this embodiment has a configuration including a plurality of yarn passing members 31. Thus, the number of the yarn passing members 31 is not limited to one, and a plurality of yarn passing members 31 may be provided.

  When the number of the yarn passing members 31 is increased, the number of times that the yarn 20 stored in the yarn storage device 183 is subjected to the “rewinding” operation increases. As a result, the entire yarn 20 is easily moved toward the unwinding side. As described above, when the yarn 20 is easily moved toward the unwinding side, the spiral pitch of the yarn 20 wound in a substantially spiral shape around the yarn storage roller 32 and the yarn passing member 31 tends to be rough. There is.

  When the spiral pitch becomes rough, the amount of yarn 20 that can be stored in the yarn storage device 183 decreases. In other words, the amount of the yarn 20 stored in the yarn storage device 183 can be adjusted by changing the number of the yarn passing members 31. Therefore, the number of yarn passing members 31 may be reduced when it is desired to increase the storage amount of the yarn 20, and the number of yarn passing members 31 may be increased when it is desired to reduce the storage amount.

  In addition, according to an experiment by the inventors of the present application, it has been found that the generation of a balloon can be most effectively prevented when a configuration including three yarn passing members 31 is provided. Therefore, from the viewpoint of preventing the generation of balloons and stabilizing the unwinding of the yarn from the yarn accumulating device 183, it is most preferable that the number of the yarn passing members 31 is three.

  In addition, from the viewpoint of stably unwinding the yarn 20 from the yarn storage device 183, the three yarn passing members 31 are arranged so that the distance from the yarn storage roller 32 is the same. More specifically, in a cross section (FIG. 9) by a plane orthogonal to the axis of the yarn accumulating roller 32, the three yarn passing members 31 are arranged on a virtual circle 70 centered on the axis of the yarn accumulating roller. .

  Similarly, from the viewpoint of stably unwinding the yarn 20 from the yarn storage device 183, the three yarn passing members 31 are equidistant in a cross section (FIG. 9) by a plane orthogonal to the axis of the yarn storage roller. Are arranged as follows.

  As described above, in the yarn storage device 183 of the present embodiment, each vertex of the virtual equilateral triangle 71 having the center of gravity as the axis of the yarn storage roller 32 in the cross section (FIG. 9) taken along the plane orthogonal to the axis of the yarn storage roller 32. The three yarn passing members 31 are arranged so as to constitute

  Since the yarn accumulating roller 32 cannot exert a conveying force unless it contacts the yarn 20, the yarn accumulating roller 32 is disposed so as to contact the yarn between the yarn passing members 31. More specifically, in a cross section (FIG. 9) by a plane orthogonal to the axis of the yarn accumulating roller, the radius R1 of the yarn accumulating roller is the length L1 of the perpendicular from the center of gravity of the virtual equilateral triangle 71 to each side. (That is, the yarn accumulating roller 32 is configured to interfere with each side of the regular triangle 71). Thereby, the surface of the yarn storage roller 32 can contact the yarn 20, so that the yarn 20 can be conveyed by the rotation of the yarn storage roller 32, and the yarn can be stored in the yarn storage device 183.

  As described above, the yarn accumulating device 183 included in the yarn accumulating / drawing device of the present embodiment is provided with a plurality of yarn passing members 31.

  By changing the number of yarn passing members 31 in this way, the number of times “tension” and “loosening” are given to the yarn 20 can be changed, so that the winding pitch can be changed.

  In the yarn accumulating device 18 included in the yarn accumulating / drawing device of the present embodiment, the plurality of yarn passing members 31 are provided on a virtual circle 70 centered on the rotation axis of the yarn accumulating roller 32.

  In this way, by disposing the plurality of yarn passing members 31 at the same distance from the yarn accumulating roller, the unwinding of the yarn 20 can be stabilized.

  In the yarn accumulating device 183 included in the yarn accumulating / drawing device of the present embodiment, three yarn passing members 31 are provided.

  That is, if there are three yarn passing members, the generation of the balloon can be suppressed and the unwinding of the yarn 20 from the yarn accumulating device 183 can be particularly stabilized.

  In the yarn accumulating device 183 included in the yarn accumulating / drawing device of the present embodiment, the three yarn passing members 31 are respectively apexes of the virtual equilateral triangle 71 in a cross section by a plane orthogonal to the rotation axis of the yarn accumulating roller 32. Is arranged.

  Thus, by arranging the three yarn passing members 31 in the shape of a regular triangle, the unwinding of the yarn can be further stabilized.

  In the yarn accumulating device 183 included in the yarn accumulating / drawing device of the present embodiment, the cross-sectional shape of the yarn accumulating roller 32 is circular in the cross section taken along the plane orthogonal to the rotation axis of the yarn accumulating roller 32, and the radius R1 is 3 It is longer than the length L1 of the perpendicular line from the center of gravity of the virtual triangle 71 formed with the two thread passing members 31 as apexes.

  By arranging the yarn passing member 31 in this way, the yarn 20 can come into contact with the yarn accumulating roller 32. Accordingly, a conveying force is applied to the yarn 20 by the yarn storage roller 32, and the yarn 20 can be stored in the yarn storage device 183.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. In the following description, components that are the same as or similar to those in the first embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  As shown in FIG. 10, the yarn accumulating device 184 included in the yarn accumulating / drawing device of this embodiment is configured to include a plurality of yarn accumulating rollers 32. Specifically, the yarn accumulating rollers 32 are arranged so that each apex of a regular hexagon is formed in a cross section (FIG. 10) by a plane orthogonal to the rotation axis of the yarn accumulating roller 32. Further, three thread passing members 31 are provided at appropriate positions outside the regular hexagon.

  The yarn storage device 184 stores the yarn 20 by winding the yarn 20 from the outside of the hexagon that connects the six yarn storage rollers 32 and the three yarn passing members 31. In the case of a configuration including a plurality of yarn accumulating rollers 32 as described above, resistance is imparted to the yarn contacting the yarn passing member 31 by rotating each yarn accumulating roller 32 in the same direction at a constant speed. The thread 20 can be given “loosening” and “tension”. Therefore, even in the configuration including a plurality of yarn accumulating rollers 32 as described above, the same effects as in the first to third embodiments can be exhibited.

  The preferred embodiments and modifications of the present invention have been described above, but the above configuration can be modified as follows, for example.

  In the first embodiment, the axis of the yarn accumulating roller 32 and the longitudinal direction of the yarn passing member 31 are parallel to each other. However, the present invention is not limited to this, and the yarn passing member 31 may be slightly inclined. Further, the yarn passing member 31 is not limited to a linear shape, and may be formed to be curved. That is, it is only necessary that the yarn 20 can be appropriately passed between the yarn accumulating roller 32 and the yarn passing member 31, and the shape, arrangement position, arrangement direction, and the like of the yarn passing member 31 can be appropriately changed.

  Moreover, in the said embodiment, although the cross-sectional shape by the plane orthogonal to the longitudinal direction was circular, the thread passing member 31 is not restricted to this, It is good also as non-circular. For example, it can be configured such that the cross-sectional shape is D-shaped. However, in order not to damage the thread 20, it is preferable that the thread passing member 31 does not have a sharp portion in the cross-sectional outline of the portion that contacts the thread 20.

  In the above embodiment, the rotating body is a yarn accumulating roller. However, the rotating body is not limited to the roller-shaped member, and a rotating body having a non-circular cross-sectional shape by a plane orthogonal to the rotation axis may be used.

  The control unit 25 is not limited to the configuration provided for each winder unit 2 and may be configured to control a plurality of winder units by one control unit. In the above description, a single control unit 25 is configured to control a plurality of members collectively. However, the present invention is not limited to this. For example, a control unit is provided for each member to be controlled. Also good.

  Although the control unit 25 is configured by hardware and software, a part or all of the functions may be configured by dedicated hardware.

  Although the winder unit 2 of the said embodiment is the structure which supplies the yarn supply bobbin 21 with the magazine type bobbin supply apparatus 26, it is not limited to this structure. For example, it is possible to change to a configuration in which the yarn feeding bobbin 21 is supplied to the winder unit 2 by conveying a tray on which the yarn feeding bobbin 21 is set along an appropriate path.

  In the above embodiment, the winding unit 8 is configured to traverse the yarn 20 by the traverse drum 24, but may be configured to traverse the yarn 20 by, for example, an arm type traverse mechanism.

  The automatic winder of the above embodiment is configured to blow and guide the yarn to the yarn joining device 14, but is not limited thereto, and for example, the yarn on the yarn feeding bobbin 21 and the yarn on the yarn storage roller 32 are sucked and captured. A configuration may be adopted in which the sucked and captured yarn is guided to the yarn joining device 14 by appropriate driving means.

  As shown in FIG. 2, when the yarn storage device 18 includes the tension applying unit 50 and the tension of the yarn wound around the winding unit 8 can be satisfactorily controlled only by the tension applying unit 50, The two-tension applying device 19 can be omitted.

  The configuration of the present invention can be applied not only to an automatic winder but also to other types of yarn winding devices including a yarn joining device.

5 Yarn storage / drawing device 8 Winding part (drawing device)
18 Yarn storage device 31 Yarn passing member 31a Second yarn contact portion 32 Yarn storage roller (rotating body)
32a First thread contact portion

Claims (14)

A rotating body having a first thread contact portion; and a thread passing member having a second thread contact portion and provided in a direction along the rotation axis of the rotating body, the first thread contact portion and the second thread A yarn storage device for alternately storing and storing the yarn across the yarn contact portion;
A drawing device for drawing and unwinding the yarn stored in the yarn storage device in the direction of the rotation axis of the rotating body;
A yarn storage and withdrawal device characterized by comprising: The yarn storage and withdrawal device according to claim 1,
The yarn storage / drawing apparatus according to claim 1, wherein the second yarn contact portion is parallel to a rotation axis of the rotating body. The yarn storage / drawing device according to claim 1 or 2,
The yarn accumulating / drawing apparatus according to claim 1, wherein the yarn passing member is a rod-shaped member. The yarn storage and withdrawal device according to claim 3,
The yarn storage / drawing device according to claim 1, wherein the yarn passing member has a circular cross-sectional shape when cut along a plane orthogonal to a longitudinal direction thereof. The yarn storage and withdrawal device according to claim 4,
A yarn accumulating / drawing apparatus comprising a rotation support portion that rotatably supports the yarn passing member about the center of the circular cross section. The yarn storage and withdrawal device according to claim 5,
A yarn accumulating / drawing apparatus according to claim 1, wherein the rotation support portion is provided with a resistance applying portion that provides resistance to rotation of the yarn passing member. The yarn storage and withdrawal device according to claim 5,
The rotation support unit is provided with a drive unit that rotationally drives the yarn passing member,
The yarn storage / drawing device according to claim 1, wherein the driving unit sets a peripheral speed of the second yarn contact portion slower than a peripheral speed of the first yarn contact portion. The yarn storage and withdrawal device according to any one of claims 1 to 7,
The yarn wound around the rotating body and the yarn passing member is configured to be unwound while being guided by a yarn guide disposed on an extension line of the rotating shaft of the rotating body. Yarn storage and drawing device. The yarn storage and withdrawal device according to any one of claims 1 to 8,
A yarn accumulating / drawing device comprising a plurality of the yarn passing members. The yarn storage and withdrawal device according to claim 9,
The yarn storage / drawing device according to claim 1, wherein the plurality of yarn passing members are provided on a virtual circle centered on a rotation axis of the rotating body. The yarn storage and withdrawal device according to claim 9 or 10,
A yarn accumulating / drawing device comprising three yarn passing members. The yarn storage and withdrawal device according to claim 11,
The yarn accumulating / drawing device according to claim 3, wherein the three yarn passing members are arranged at vertices of virtual equilateral triangles in a cross section of a plane orthogonal to the rotation axis of the rotating body. The yarn storage and drawing device according to claim 11 or 12,
In the cross section of the plane perpendicular to the rotation axis of the rotary body, the cross-sectional shape of the rotary body is a circle, and the radius of each side from the center of the virtual triangle formed with the three thread passing members as vertices A yarn accumulating / drawing device characterized by being longer than the length of the perpendicular to the thread. A yarn storage and withdrawal device according to any one of claims 1 to 13,
A yarn supplying section for supplying yarn;
Prepared,
The yarn storage device is disposed between the yarn supplying unit and the drawing device, and stores the yarn supplied from the yarn supplying unit,
The yarn winding machine, wherein the drawing device is a winding unit that winds the yarn stored in the yarn storage device to form a package.

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