JP2016055985A - Yarn winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure capable of obtaining fluff binding effect reliably in a yarn winder having a yarn storage part.SOLUTION: An automatic winder comprises a yarn feeding part, a yarn storage device 5, and a package formation part. The yarn storage device 5 winds and stores a yarn 20 of the yarn feeding part. The package formation part winds the yarn 20 drawn from the yarn storage device 5 and forms a package. The yarn storage device 5 comprises a yarn storage roller 32 around which the yarn 20 is wound. An outer peripheral surface of the yarn storage roller 32 comprises a storage area 32e around which the yarn 20 is aligned and wound, and a drawing area 32f through which the yarn 20 wound around the storage area 32e passes when being drawn to the package formation part side. The surface roughness of a drawing contact surface, which is a surface in contact with the passing yarn 20 in the drawing area 32f, is rougher than the surface roughness of a storage contact surface, which is a surface in contact with the wound yarn 20 in the storage area 32e.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a yarn winding device including a yarn storage device. In detail, it is related with the structure of the surface of the yarn storage device for improving the fluff binding effect in the yarn storage device.

  Conventionally, in a yarn winding device for winding a spun yarn or the like to form a package, when yarn breakage occurs or when the yarn is cut, a yarn drawn from the package side, a yarn drawn from the yarn supply side, There is known a configuration in which the yarn is spliced by a yarn splicing device.

  In the yarn winding device having such a configuration, when the yarn is divided for some reason, the yarn end is wound on the package side. Therefore, the yarn winding is temporarily stopped and the yarn end is pulled out from the package side. I had to.

  Therefore, Patent Document 1 discloses a yarn winding device capable of continuously winding a yarn from the beginning to the end of winding of the package. In the yarn winding device of Patent Document 1, the yarn storage unit is provided between the yarn supply unit and the yarn winding unit, and is configured to wind the spun yarn stored in the yarn storage unit onto the yarn winding unit. ing. In the configuration of Patent Document 1, even when the yarn is divided, the yarn stored in the yarn storage portion can be wound around the yarn winding portion, so that the yarn joining can be performed without interrupting the yarn winding operation. It is possible to carry out continuously.

  In the yarn winding device disclosed in Patent Document 1, the yarn accumulating unit includes a rotary accumulating drum that is driven by a motor, and has means that can control the rotation speed of the motor. Further, in the yarn storage unit, the spun yarn is not wound around the yarn unwinding side (the side where the yarn is drawn and unwound by the yarn winding unit) from a predetermined midway position of the rotary storage drum. Composed. With this configuration, when the spun yarn wound around the rotary storage drum is unwound from the rotary storage drum and travels toward the yarn winding unit, the spun yarn travels while rolling on the surface of the portion of the rotary storage drum. According to Patent Document 1, it is possible to lay down the fluff of the spun yarn.

International Publication No. 2011/040545

  As described above, Patent Document 1 states that the effect of fluffing can be obtained by spinning the spun yarn on the surface of the rotary storage drum. Therefore, the inventor of the present application examined by experiments how much fluffing effect can be actually obtained by using an automatic winder provided with a yarn storage roller as a rotary storage drum.

  Then, when buffing was performed on the entire surface of the yarn accumulating roller, it was difficult to stably obtain the fluffing effect. Specifically, an automatic winder equipped with a yarn accumulating roller may reduce fluffing by about 30% as compared with an automatic winder without a yarn accumulating device, but there are cases where the fluffing effect is hardly obtained. there were. Thus, in the conventional yarn winding machine, the variation in the fluffing effect is large, and it has been difficult to reliably exhibit the fluffing effect.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a configuration capable of reliably obtaining a fluff binding effect in a yarn winding machine having a yarn storage section.

Means and effects for solving the problems

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

  According to an aspect of the present invention, a yarn winding device having the following configuration is provided. That is, the yarn winding device includes a yarn supplying unit, a yarn accumulating unit, and a package forming unit. The yarn supplying section can supply a yarn. The yarn storage unit winds and stores the yarn of the yarn supply unit. The package forming unit winds the yarn pulled out from the yarn storage unit to form a package. The yarn storage unit has a rotating body around which a yarn is wound. The rotating surface of the rotating body has a storage area and a drawer area. The storage area is an area where yarns are aligned and wound. The drawing region is a region through which the yarn wound around the storage region passes when drawn to the package forming part side. The surface roughness of the drawing contact surface, which is the surface with which the thread passing through in the drawing region contacts, is rougher than the surface roughness of the storage contact surface, which is the surface with which the yarn wound in the storage region contacts.

  As a result, since the surface is smooth in the storage area where the yarn is wound at a high density, the yarn smoothly flows downstream, and in the withdrawal area, the surface is rough, so that the yarn is rolled without slipping and effectively fluffed. There is a downturn. Therefore, in the yarn accumulating portion, effective fluff binding can be realized while smoothly accumulating the yarn.

  In the yarn winding device, the surface roughness of the drawing contact surface is preferably 5 times or more and 50 times or less of the surface roughness of the storage contact surface when compared by arithmetic mean roughness.

  Thereby, since a difference in surface roughness is moderately generated between the drawing contact surface and the storage contact surface, smooth storage of the yarn and improvement of the fluffing effect can be achieved at the same time.

  The yarn winding device preferably has the following configuration. That is, the package forming unit can draw the yarn from the yarn storage unit at a speed of 1000 m or more and 2000 m or less per minute. The surface roughness of the drawing contact surface is not less than 1 and not more than 2 in terms of arithmetic average roughness.

  Thereby, since a thread | yarn rolls suitably on the drawing-out contact surface, effective fluff binding can be implement | achieved.

  The yarn winding device preferably has the following configuration. That is, the yarn winding device includes a yarn detection sensor for performing yarn storage control. The yarn detection sensor detects a location near the drawing area in the storage area.

  Accordingly, the yarn detection sensor can surely control the yarn so that the yarn is aligned and wound in the storage region having a smooth surface. Therefore, the yarn can be stored smoothly. In addition, since the place detected by the yarn detection sensor is in the storage region, control for adjusting the storage amount with a margin (for example, before the yarn wound around the storage region reaches the drawing region (for example, Control of the rotational speed of the rotating body).

  The yarn winding device preferably includes a drawn yarn guide member that guides the yarn so as to come into contact with the drawing contact surface when the yarn wound in the storage region is drawn.

  Accordingly, the drawn yarn guide member can prevent the yarn unwound from the storage area from floating from the drawn contact surface due to the influence of centrifugal force or the like. Therefore, fluff can be performed by reliably rolling the yarn on the drawing contact surface.

  In the above-described yarn winding device, the drawn-out yarn guide member can be configured to be an elastic ring member.

  In this case, when the drawn yarn is sandwiched between the elastic ring member and the rotating body, the yarn can be surely brought into contact with the drawing contact surface and fluffing can be performed.

  In the above-described yarn winding device, the drawn-out yarn guide member may be configured to be a rod-shaped resistance member that is attached to be rotatable relative to a rotating body on which the yarn is wound.

  In this case, the yarn can be reliably brought into contact with the drawing contact surface for fluffing. Further, by rotating the yarn in contact with the rod-shaped resistance member, it is possible to automatically perform the operation of winding the yarn around the rotating body.

  The yarn winding device preferably has the following configuration. That is, the rotating body is formed with a tapered portion whose diameter increases as it goes to the end in the axial direction. The drawing contact surface includes the surface of the tapered portion in the drawing direction of the yarn.

  Thereby, since the surface of the taper part which is easy to contact with the thread | yarn pulled out from a storage area | region becomes a drawer | drawing-out contact surface, a thread | yarn can be reliably rolled on a drawing-out contact surface and fluffing can be performed.

  In the yarn winding device, at least one of the drawing contact surface and the storage contact surface is subjected to any of knurling, shot blasting, lathe formation by a lathe, and surface chemical treatment. It is preferable.

  Thereby, the surface roughness as described above can be easily realized for the drawer contact surface and the storage contact surface.

  In the yarn winding device, it is preferable that the yarn supplying unit includes a support unit that supports a yarn supplying bobbin around which a yarn spun by a ring spinning machine is wound.

  Thereby, in the yarn winding device that supports the yarn supplying bobbin and winds it while storing the yarn of the yarn supplying bobbin, it is possible to effectively fluff the spun yarn.

The schematic side view of the winder unit which comprises the automatic winder which concerns on one Embodiment of this invention. The enlarged view which shows the structure of the periphery of a thread | yarn storage apparatus in detail. The side view of a thread | yarn storage roller. The graph which shows the fluff generation amount in the automatic winder of this embodiment compared with the automatic winder without a thread | yarn storage apparatus. The enlarged view of the periphery of the thread | yarn storage apparatus which concerns on a modification. The side view of the thread | yarn storage roller which concerns on a modification.

  Next, an embodiment of the present invention will be described. FIG. 1 is a schematic side view of a winder unit (yarn winding unit) 2 constituting an automatic winder 1 as a yarn winding machine according to an embodiment of the present invention.

  The automatic winder 1 of this embodiment has a configuration in which a large number of winder units 2 are arranged side by side. The automatic winder 1 also includes a machine base management device (not shown) for centrally managing the winder unit 2 and a blower box (not shown) provided with 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, a yarn accumulating device (yarn accumulating unit) 5, and a package forming unit 8. The winder unit 2 unwinds the yarn (spun yarn) 20 of the yarn feeding bobbin 21 supported by the yarn feeding unit 7 and winds the unwound yarn 20 around a winding bobbin 22 to form a package 30. Is configured to do.

  FIG. 1 shows the state of the winder unit 2 during normal winding. Here, “at the time of normal winding” is a state in which the yarn 20 is continuous between the yarn supplying bobbin 21 and the package 30, and the yarn 20 is unwound from the yarn supplying bobbin 21 and the package 30. Is a state in which the yarn 20 is wound up. In the following description, “upstream side” and “downstream side” refer to the upstream side and the downstream side when viewed in the traveling direction of the yarn 20.

  The yarn supplying section 7 includes a bobbin support peg (supporting section) 9 for holding the yarn supplying bobbin 21 in a substantially upright state. The bobbin support peg 9 is configured as an upward protruding member that can be inserted into the core tube of the yarn feeding bobbin 21. A yarn 20 spun by a ring spinning machine (not shown) is wound around the yarn feeding bobbin 21. With this configuration, the yarn supplying unit 7 can unwind and supply the yarn 20 from the yarn supplying bobbin 21 supported by the bobbin support peg 9. The yarn supplying section 7 is disposed on the front side of the winder unit 2 by discharging the empty yarn supplying bobbin 21 when all the yarns 20 are unwound from the set yarn supplying bobbin 21. The magazine-type bobbin supply device 26 is configured to receive new yarn supply bobbins 21.

  The yarn storage device 5 is arranged between the yarn supplying unit 7 and the package forming unit 8 so as to temporarily store the yarn 20 supplied from the yarn supplying unit 7 and then supply the yarn 20 to the package forming unit 8. It is configured. The yarn accumulating device 5 includes a yarn accumulating roller (rotating body) 32 around which the yarn 20 can be wound, and a roller driving motor 33 that rotationally drives the yarn accumulating roller 32.

  The roller drive motor 33 can rotate the yarn accumulating roller 32 in a direction in which the yarn 20 from the yarn supplying unit 7 is wound, and can also rotate in the opposite direction. In the following description, regarding the rotation of the yarn accumulating roller 32, the rotation in the direction of winding the yarn 20 from the yarn supplying unit 7 may be referred to as normal rotation, and the rotation in the opposite direction may be referred to as reverse rotation.

  The package forming 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 traverse drum 24 is disposed opposite to the take-up bobbin 22, and the take-up bobbin 22 is driven to rotate by rotating the traverse drum 24 with an electric motor (not shown). As a result, the yarn 20 stored in the yarn storage device 5 can be unwound and pulled out and wound up 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 30 can be wound around the winding bobbin 22 while being traversed to form a package 30 having a predetermined length and a predetermined shape.

  In the present embodiment, the package forming unit 8 can draw and wind the yarn 20 from the yarn storage device 5 at a speed of 1000 m to 2000 m per minute (for example, 1500 m / min). However, the speed at which the yarn 20 is wound is not limited to the above range, and can be determined as appropriate.

  The winder unit 2 includes various devices in a yarn traveling path from the yarn supplying unit 7 to the package forming unit 8 via the yarn accumulating device 5. Specifically, in the yarn traveling path, the unwinding assisting device 10, the lower yarn blowing upper portion 11, the tension applying device 12, and the upper portion are arranged in order from the yarn supplying section 7 side to the yarn accumulating device 5 side. A yarn catching unit 13, a yarn joining device 14, a yarn trap 15, a cutter 16, a clearer (yarn defect detecting device) 17, and an upper yarn drawing unit 48 are arranged.

  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. By controlling, the unwinding of the yarn 20 is assisted.

  The lower thread blower 11 is an air soccer device disposed immediately downstream of the unwinding assisting device 10 so that the lower thread on the yarn feeding bobbin 21 side can be blown up to the yarn joining device 14 side by compressed air. It is configured. With this configuration, when the yarn 20 is split between the yarn supplying bobbin 21 and the yarn accumulating device 5, the yarn 20 on the yarn supplying bobbin 21 side is blown up by the lower yarn blowing portion 11 and the yarn joining device 14 ( The yarn trap 15) can be guided.

  The tension applying device 12 applies a predetermined tension to the traveling yarn 20. The 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 applied by running the thread 20 between the comb teeth. It is configured as follows. The movable comb teeth are configured to be movable by, for example, a solenoid so that the meshing state between the comb teeth can be adjusted, whereby the tension applied to the yarn 20 can be adjusted. However, the configuration of the tension applying device 12 is not limited to this, and may be a disk-type tension applying device, for example.

  The upper thread catcher 13 is disposed immediately upstream of the yarn joining device 14. The upper yarn catching section 13 is connected to a negative pressure source (not shown), and can generate a suction air flow at the time of yarn joining to suck and catch the yarn 20 on the yarn storage device 5 side.

  The yarn joining device 14 detects when the clearer 17 detects a yarn defect and cuts the yarn 20 with the cutter 16, when the yarn 20 being unwound from the yarn feeding bobbin 21 is broken, or when the yarn feeding bobbin 21 is turned off. When the yarn 20 between the yarn supplying bobbin 21 and the yarn accumulating device 5 is divided, such as during replacement of the yarn, the yarn 20 on the yarn supplying bobbin 21 side and the yarn accumulating device 5 side The yarn 20 is spliced together. As such a yarn splicing device 14, a device using a fluid such as compressed air or a mechanical device can be used.

  The yarn trap 15 is disposed upstream of the cutter 16 and immediately downstream of the yarn joining device 14. The yarn trap 15 is configured as a cylindrical member connected to a negative pressure source (not shown), and is provided close to the traveling path of the yarn 20. With this configuration, when the yarn 20 is split between the yarn supplying bobbin 21 and the yarn accumulating device 5, the yarn 20 on the yarn supplying bobbin 21 blown up by the lower yarn blowing portion 11 is moved by the yarn trap 15. Can be captured by aspiration.

  The clearer 17 is configured to detect yarn defects such as slabs and foreign matter contamination by monitoring the thickness of the yarn 20 and the like. When the clearer 17 detects a yarn defect, the clearer 17 transmits a yarn defect detection signal to a control unit 25 (described later) that controls the winder unit 2. A cutter 16 for immediately cutting the yarn 20 in accordance with the yarn defect detection signal is disposed in the vicinity of the clearer 17.

  The upper thread drawing portion 48 is an air soccer device arranged immediately upstream of the yarn storage device 5 so that the upper yarn on the yarn storage device 5 side can be blown down to the yarn joining device 14 side by compressed air. It is configured. More specifically, the upper thread drawing portion 48 is formed with an outlet for the thread 20, and a thread guide member 60, which is a curved cylindrical member, is provided so as to be close to the outlet. Yes. Openings are formed at both ends of the yarn guide member 60 in the longitudinal direction. The yarn guide member 60 is disposed such that an opening on one end side thereof is opposed to the air outlet of the upper yarn drawing portion 48 and an opening on the other end side is opposed to the upper yarn catching portion 13. In addition, a guide path that connects openings at both ends so as to bypass the yarn joining device 14 and the like is formed inside the yarn guide member 60.

  With this configuration, when the yarn 20 is split between the yarn feeding bobbin 21 and the yarn storage device 5, the upper yarn pull-out portion 48 moves the yarn 20 on the yarn storage device 5 side to the guide path of the yarn guide member 60. The upper thread catching section 13 catches the upper thread catching section 13 and draws it out. Since the thread guide member 60 is formed with a not-shown penetrating slit over its entire length, the thread 20 is pulled from the inside of the thread guide member 60 in a state where the thread 20 is captured by the upper thread capturing portion 13. Can be pulled out. As described above, the yarn 20 on the yarn storage device 5 side can be blown down by the upper yarn drawing portion 48 and guided to the yarn joining device 14 (upper yarn catching portion 13).

  Next, a configuration for controlling the winder unit 2 will be described.

  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 is stored in the RAM. The hardware and software cooperate to control each configuration of the winder unit 2.

  Specifically, the control unit 25 drives the roller drive motor 33 to rotate the yarn storage roller 32 in the forward direction, and unwinds the yarn 20 from the yarn supply bobbin 21 set in the yarn supply unit 7 to thereby provide a yarn storage device. 5 so as to be stored. At this time, the control unit 25 controls the unwinding assisting device 10 to assist the unwinding of the yarn 20, and also controls the tension applying device 12 to apply an appropriate tension to the yarn 20. The control unit 25 controls an electric motor (not shown) that drives the traverse drum 24 to control the yarn 20 to be wound around the winding bobbin 22 to form the package 30.

  In the course of the yarn winding operation, the control unit 25 changes the speed at which the roller drive motor 33 rotates the yarn storage roller 32 in the forward direction so that a certain amount of yarn 20 is stored in the yarn storage device 5. Control is performed (details will be described later). Further, when a yarn defect detection signal is input from the clearer 17, the control unit 25 controls the cutter 16 to operate.

  Further, when the yarn 20 is divided between the yarn supplying unit 7 and the yarn accumulating device 5, the control unit 25 controls the lower yarn blowing unit 11, the yarn trap 15, the upper yarn drawing unit 48, and the upper yarn catching unit. The portion 13 and the yarn joining device 14 are appropriately controlled to join the yarn 20 on the yarn feeding portion 7 side and the yarn 20 on the yarn storage device 5 side.

  The control unit 25 included in each winder unit 2 is configured to be able to communicate with the machine management device. Thereby, operation | movement of the some winder unit 2 can be managed centrally in a machine stand management apparatus.

  Next, the yarn splicing operation in the automatic winder 1 (winder unit 2) of the present embodiment will be described.

  That is, the yarn 20 on the yarn storage device 5 side and the yarn 20 on the yarn supply bobbin 21 side are in a divided state due to yarn breakage, cutting of the yarn 20 with the cutter 16, or replacement of the yarn supply bobbin 21. Sometimes, the yarn joining operation by the yarn joining device 14 is performed.

  This will be specifically described below. The control unit 25 first blows up the yarn 20 on the yarn feeding bobbin 21 side upward by the lower yarn blowing portion 11. The yarn 20 blown up is sucked and captured by the yarn trap 15. Thereby, the yarn 20 on the yarn feeding bobbin 21 side can be guided to the yarn joining device 14.

  Before and after this, the control unit 25 blows off the yarn 20 stored in the yarn storage device 5 by the upper yarn drawing unit 48 while rotating the yarn storage roller 32 of the yarn storage device 5 in the reverse direction. The yarn 20 is fed along the yarn guide member 60 and is sucked and caught by the upper yarn catching portion 13. Thereby, the yarn 20 on the yarn storage device 5 side can be guided to the yarn joining device 14. The controller 25 stops the reverse rotation of the yarn accumulating roller 32 when the yarn on the yarn accumulating device 5 side is introduced into the yarn joining device 14.

  In this state, the control unit 25 operates the yarn joining device 14 to connect the yarn 20 on the yarn feeding bobbin 21 side and the yarn 20 on the yarn storage device 5 side. When the yarn splicing operation is completed, the control unit 25 resumes the winding of the yarn around the yarn accumulating device 5 by resuming the normal rotation of the yarn accumulating device 5.

  Even when the yarn 20 between the yarn supplying bobbin 21 and the yarn accumulating device 5 is in a divided state as described above, the winding of the yarn 20 around the package 30 in the package forming unit 8 is interrupted. Can continue without. That is, in the automatic winder 1 of the present embodiment, as described above, the yarn storage device 5 is interposed between the yarn supplying unit 7 and the package forming unit 8, and a certain amount of yarn 20 is placed on the yarn storage device 5. Reserved. The package forming unit 8 is configured to wind up the yarn 20 stored on the yarn storage device 5. Therefore, even if the supply of the yarn 20 from the yarn supplying bobbin 21 is interrupted for some reason (for example, when the yarn joining operation is performed), the winding of the yarn 20 around the package 30 can be continued. it can.

  Thus, since the winding operation in the package forming 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 5 is interposed between the yarn supplying bobbin 21 and the package forming portion 8, the package formation is not affected by the tension fluctuation when the yarn 20 is unwound from the yarn supplying bobbin 21. Winding at the part 8 can be performed.

  Next, with reference to FIG.2 and FIG.3, the thread | yarn storage apparatus 5 of this embodiment is demonstrated. FIG. 2 is an enlarged view showing a detailed configuration around the yarn storage device 5. FIG. 3 is a side view of the yarn accumulating roller 32.

  As described above, the yarn storage device 5 includes the yarn storage roller 32 and the roller drive motor 33.

  The yarn storage roller 32 is formed as a substantially cylindrical member, and is configured so that the yarn 20 can be stored by winding the yarn 20 around the outer peripheral surface thereof. The roller drive motor 33 can rotationally drive the yarn accumulating roller 32 around its axis. Hereinafter, the end of the yarn accumulating roller 32 on the side where the roller drive motor 33 is disposed may be referred to as a base end, and the opposite end may be referred to as a front end.

  As shown in FIG. 2, the proximal end portion of the yarn accumulating roller 32 is formed with a tapered proximal end taper portion 32 a whose diameter increases toward the end portion. On the other hand, a tapered tip side taper portion 32 b whose diameter increases toward the end portion is formed at the tip portion of the yarn accumulating roller 32. A cylindrical portion 32c, which is a portion (a portion having a substantially constant diameter) formed in a cylindrical shape, is disposed between the proximal side tapered portion 32a and the distal end side tapered portion 32b. By forming the taper portion in this manner, the yarn 20 is prevented from slipping from the end portion of the yarn accumulating roller 32.

  An upper thread drawing portion 48 is disposed in the vicinity of the boundary portion between the proximal end side tapered portion 32a and the cylindrical portion 32c of the yarn accumulating roller 32. The upper thread drawing portion 48 is configured as a cylindrical member, and during normal winding, the yarn 20 on the yarn feeding bobbin 21 side passes through the inside of the upper yarn drawing portion 48 and the surface of the yarn accumulating roller 32. It is designed to be pulled out toward

  The yarn accumulating device 5 rotates the yarn accumulating roller 32 forward in a state in which the yarn 20 is wound around the yarn accumulating roller 32, whereby the yarn accumulating device 5 is upstream of the yarn accumulating device 5 (on the yarn feeding bobbin 21 side). Tension can be applied. Thereby, the yarn 20 can be unwound from the yarn supplying bobbin 21 and the yarn 20 can be wound around the surface of the yarn accumulating roller 32. Since the yarn 20 is guided to the boundary portion between the proximal end side tapered portion 32a and the cylindrical portion 32c as shown in FIG. 2, the yarn 20 has a yarn layer on the distal end side from the proximal end portion side of the cylindrical portion 32c. It winds around sequentially while pushing away. As a result, the yarn 20 on the yarn accumulating roller 32 (on the cylindrical portion 32c) is pushed by the newly wound yarn 20, and is sequentially fed toward the tip end side on the surface of the cylindrical portion 32c. In this way, on the outer peripheral surface of the yarn accumulating roller 32, the yarn 20 is spirally aligned and wound regularly from the base end side.

  The thread 20 wound around the cylindrical portion 32c is eventually drawn to the downstream side (the tip portion side, the package forming portion 8 side) in a direction along the axial direction at a position in the axial direction of the cylindrical portion 32c. Note that the position at which the yarn 20 that has been aligned in the yarn storage roller 32 is pulled out to the downstream side differs depending on the storage amount of the yarn 20 at that time.

  Here, when the yarn 20 is drawn out as described above, the yarn 20 passes through a drawing guide 37 arranged on an extension of the central axis of the yarn accumulating roller 32. In this way, by configuring the yarn 20 to be drawn out on the extension line of the central axis of the yarn storage roller 32, the yarn 20 can be drawn from the yarn storage roller 32 regardless of the rotation state of the yarn storage roller 32. it can. That is, the package forming unit 8 unwinds the yarn 20 from the yarn storage roller 32 into the package 30 regardless of whether the rotation direction of the yarn storage roller 32 is normal or reverse, and the rotation stops. Can be wound up.

  In the yarn storage roller 32 of the present embodiment, a part of the surface of the cylindrical portion 32c on the proximal end side is a storage region 32e for aligning and winding the yarn 20 as described above. On the other hand, the remaining region (tip-side region) of the surface of the cylindrical portion 32c and the surface of the tip-side taper portion 32b serve as a drawing region 32f through which the yarn 20 drawn from the storage region 32e passes.

  Therefore, the outer peripheral surface (rotation surface) of the yarn storage roller 32 has a storage region 32e and a drawing region 32f. The drawing region 32f is a region through which the yarn 20 passes, and the yarn 20 is not wound in an aligned manner in the drawing region 32f.

  In this embodiment, the surface (storage contact surface) of the storage region 32e is buffed, while the surface (drawing contact surface) of the extraction region 32f is subjected to appropriate surface processing (in this embodiment). Surface roughness is actively processed by lathe processing).

  As a result, the surface roughness in the storage region 32e is 0.04 to 0.2 in terms of arithmetic average roughness, and the surface roughness in the extraction region 32f is in the range of 1 to 2 in terms of arithmetic average roughness. . Therefore, when compared with the arithmetic average roughness, the surface roughness in the extraction region 32f is not less than 5 times and not more than 50 times the surface roughness in the storage region 32e.

In this specification, the arithmetic average roughness means that after obtaining an average line from a roughness curve, only the reference length (l) is extracted from the roughness curve in the direction of the average line, and the average line of the extracted portion is obtained. When the x-axis is taken in the direction of y and the y-axis is taken in the direction perpendicular thereto, and the roughness curve is expressed by y = f (x), the value Ra obtained by the following equation (1) is expressed in micrometers ( μm).

  If the surface roughness in the drawing area 32f is less than 1 in terms of arithmetic average roughness, the yarn 20 does not roll on the drawing area 32f and becomes slippery. On the other hand, if the surface roughness in the drawing region 32f exceeds 2 in terms of arithmetic average roughness, the fuzz of the yarn 20 will be deteriorated. Therefore, as described above, it is preferable that the surface roughness in the extraction region 32f is 1 to 2 in terms of arithmetic average roughness.

  Thus, by making the surface roughness of the storage region 32e and the drawing region 32f different, the yarn 20 can easily roll on the surface of the yarn storage roller 32 when the yarn 20 passes through the yarn storage roller 32. . That is, since the surface roughness is small in the storage area 32e, the yarn smoothly flows downstream, and in the drawing area 32f, the surface roughness is large, so that the yarn is rolled without slipping and effectively fluffed. .

  In the present embodiment, the surface of the tip side taper portion 32b is also included in the extraction region 32f, and the surface roughness is adjusted to be 1 or more and 2 or less in arithmetic mean roughness by the lathe processing. ing. Since the tip side taper portion 32b has a tapered shape whose diameter increases toward the end portion, the surface thereof is easy to come into contact with the yarn 20 drawn from the storage region 32e to the tip portion side. As a result, the yarn 20 rolls favorably in the drawing region 32f, so that the fluffing effect is improved.

  In this embodiment, a rubber band (elastic ring member, drawn yarn guide member) 32d is hung on an appropriate place in the drawing region 32f of the yarn accumulating roller 32. Specifically, the rubber band 32d is formed in an O-ring shape, and is disposed at a boundary portion between the cylindrical portion 32c and the tip side taper portion 32b. The yarn 20 passes between the rubber band 32d and the surface of the yarn storage roller 32, and is drawn out from the yarn storage roller 32. Since the tip side taper portion 32 b is formed on the yarn storage roller 32, the rubber band 32 d is not moved by the yarn 20 and falls off the yarn storage roller 32. With the above configuration, an appropriate tension is applied to the yarn 20 unwound from the yarn accumulating roller 32 by tightening the rubber band 32d against the yarn accumulating roller 32. Therefore, the formation of a balloon due to the swinging of the yarn 20 can be suppressed. At the same time, the unwinding of the yarn 20 can be stabilized. Further, since the lump of yarn 20 can be unwound and unwound, a phenomenon (sluffing) in which the yarn 20 on the yarn accumulating roller 32 becomes a lump and comes off at once can be prevented. Further, the yarn 20 is sandwiched between the rubber band 32d and the yarn accumulating roller 32 and rolled while being appropriately pressed against the surface of the drawing region 32f by the rubber band 32d, so that the fluffing effect can be improved.

  Next, control of the storage amount of the yarn 20 in the yarn storage device 5 will be described.

  In the vicinity of the yarn accumulating roller 32, a lower limit sensor 35 for detecting that the yarn 20 on the yarn accumulating roller 32 has become less than a predetermined lower limit amount and an upper limit sensor for detecting that the yarn 20 has exceeded a predetermined upper limit amount. (Yarn detection sensor) 36 is disposed. The lower limit sensor 35 and the upper limit sensor 36 can be configured as optical sensors, for example. The detection results of the lower limit sensor 35 and the upper limit sensor 36 are output to the control unit 25.

  When the controller 25 detects that the yarn on the yarn accumulating roller 32 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 accumulating roller 32. Thereby, the speed at which the yarn 20 is wound around the yarn accumulating roller 32 increases. On the other hand, during normal winding, the rotational speed of the traverse drum 24 is substantially constant, so the speed at which the yarn 20 on the yarn accumulating roller 32 is unwound toward the package 30 is substantially constant. The controller 25 controls the roller drive motor 33 so that the speed at which the yarn 20 is wound around the yarn storage roller 32 is larger than the speed at which the yarn 20 is unwound from the yarn storage roller 32. Thus, the storage amount of the yarn 20 on the yarn storage roller 32 can be gradually increased.

  On the other hand, when the controller 25 detects that the yarn on the yarn accumulating roller 32 has exceeded the upper limit, the controller 25 appropriately controls the roller drive motor 33 to reduce the rotational speed of the yarn accumulating roller 32. Thereby, the speed at which the yarn 20 is wound around the yarn accumulating roller 32 is reduced. The control unit 25 controls the roller drive motor 33 so that the speed at which the yarn 20 is wound around the yarn storage roller 32 is smaller than the speed at which the yarn 20 is unwound from the yarn storage roller 32. Thus, the amount of the yarn 20 on the yarn accumulating roller 32 can be gradually reduced. By the control as described above, the storage amount of the yarn 20 on the yarn storage roller 32 can be maintained to be equal to or more than the lower limit amount and less than the upper limit amount.

  In the present embodiment, the upper limit sensor 36 described above is configured to detect the yarn 20 at a location near the drawing area 32f in the storage area 32e. Thereby, since it can control so that the thread | yarn 20 currently wound in alignment in the storage area | region 32e may be pulled out downstream before being pushed to the drawing area | region 32f with a rough surface, storage is performed smoothly. be able to. The upper limit sensor 36 detects the yarn 20 not at the boundary between the storage area 32e and the withdrawal area 32f but at a place where a certain margin is secured from the boundary toward the storage area 32e. Therefore, even if the yarn 20 is detected by the upper limit sensor 36, even if the deceleration of the yarn accumulating roller 32 is delayed due to the inertia of rotation or the control delay of the roller drive motor 33, the yarn 20 is aligned and wound. Can be reliably stored in the storage region 32e having a smooth surface.

  Note that the amount of yarn 20 stored on the yarn accumulating roller 32 is controlled by changing the rotational speed of the traverse drum 24 in accordance with the detection of the lower limit sensor 35 and the upper limit sensor 36 with the speed of the yarn accumulating roller 32 being constant. You may do it.

  In order to confirm the fluff binding effect of the configuration of the present embodiment, the inventor of the present application conducted an experiment to actually measure the amount of fluff generated by winding with an automatic winder while varying the type of yarn. In this experiment, the yarn storage roller 32 in which the surface roughness of the drawing region 32f is 1 to 2 in terms of arithmetic average roughness and the surface roughness of the storage region 32e is smaller than that is used.

  FIG. 4 is a graph comparing the fluff generation amount of the automatic winder 1 of the present embodiment with the fluff generation amount of a conventional automatic winder. In addition, in FIG. 4, the fluff generation amount in the automatic winder 1 of this embodiment when the fluff generation amount of the conventional automatic winder (without the yarn storage device) is 100% is a bar graph for each type of yarn. It is shown in

  According to this graph, the automatic winder 1 of the present embodiment has a fluff generation amount of at least about 10%, and when good, about 30%, compared to a conventional automatic winder (without a yarn storage device). It can be reduced. Therefore, by setting the surface roughness of the drawing region 32f to an arithmetic average roughness of 1 or more and 2 or less, the yarn 20 can appropriately roll on the surface of the yarn accumulating roller 32, and the fluffing effect can be enhanced. I understand.

  As described above, the automatic winder 1 according to the present embodiment includes the yarn supplying unit 7, the yarn accumulating device 5, and the package forming unit 8. The yarn supplying unit 7 can supply the yarn 20. The yarn storage device 5 winds and stores the yarn 20 of the yarn supplying unit 7. The package forming unit 8 forms the package 30 by winding the yarn 20 drawn from the yarn storage device 5. The yarn storage device 5 includes a yarn storage roller 32 around which the yarn 20 is wound. The outer peripheral surface of the yarn storage roller 32 has a storage area 32e and a drawing area 32f. The storage area 32e is an area where the yarn 20 is aligned and wound. The drawing region 32f is a region through which the yarn 20 wound around the storage region 32e passes when drawn to the package forming unit 8 side. The surface roughness of the drawing contact surface, which is the surface with which the yarn 20 passing through in the drawing region 32f contacts, is rougher than the surface roughness of the storage contact surface, which is the surface with which the yarn 20 wound in the storage region 32e contacts.

  As a result, the surface of the storage region 32e around which the yarn 20 is wound with high density is smooth, so that the yarn 20 flows smoothly downstream, and the surface of the drawing region 32f is rough so that the yarn 20 is rolled without slipping. The fluff is effectively reduced. Therefore, in the yarn accumulating device 5, effective fluff binding can be realized while smoothly storing the yarn 20.

  Moreover, in the automatic winder 1 of this embodiment, when compared with arithmetic mean roughness, the surface roughness of the extraction | drawer area | region 32f is 5 times or more and 50 times or less of the storage area | region 32e surface roughness.

  Thereby, since the difference of surface roughness arises moderately by the surface of the drawer | drawing-out area | region 32f, and the surface of the storage area | region 32e, smoothing of the storage of the thread | yarn 20 and the improvement of the fluffiness effect can be made compatible.

  Further, in the automatic winder 1 of the present embodiment, the package forming unit 8 can draw the yarn 20 at a speed of 1000 m to 2000 m per minute. The surface roughness of the extraction region 32f is not less than 1 and not more than 2 in terms of arithmetic average roughness.

  Thereby, since the thread | yarn 20 rolls moderately on the surface of the extraction | drawer area | region 32f, effective fluffing is realizable.

  Further, the automatic winder 1 of the present embodiment includes an upper limit sensor 36 for performing storage control of the yarn 20. The upper limit sensor 36 detects a location near the drawer area 32f in the storage area 32e.

  Accordingly, the upper limit sensor 36 can reliably control the yarn 20 to be aligned and wound in the storage region 32e having a smooth surface. Therefore, the yarn 20 can be stored smoothly. Moreover, since the place which the upper limit sensor 36 detects is in the storage area | region 32e, in the stage before the thread | yarn 20 wound around the storage area | region 32e arrives at the drawing | extracting area | region 32f, there is a margin for adjustment of storage amount Control (for example, control for decelerating the rotation of the yarn accumulating roller 32) can be performed.

  Further, the automatic winder 1 of the present embodiment includes a rubber band 32d that guides the yarn 20 so as to contact the surface of the drawing region 32f when the yarn 20 wound around the storage region 32e is drawn.

  Thereby, the rubber band 32d can prevent the yarn 20 unwound from the storage region 32e from floating from the surface of the drawing region 32f due to the influence of centrifugal force or the like. Accordingly, the yarn 20 can be surely rolled on the surface of the drawing region 32f to perform fluffing.

  Further, in the automatic winder 1 of the present embodiment, when the yarn 20 wound around the storage region 32e is pulled out, the rubber band 32d guides the yarn 20 to contact the surface of the drawing region 32f.

  Thereby, by pinching the drawn yarn 20 between the rubber bands 32d, the yarn 20 can be surely brought into contact with the surface of the drawn region 32f and fluffing can be performed.

  Further, in the automatic winder 1 of the present embodiment, the yarn accumulating roller 32 is formed with a tapered proximal end side taper portion 32a and a distal end side taper portion 32b whose diameters increase toward the end portion in the axial direction. . The surface of the drawing region 32f includes the surface of the tip side taper portion 32b arranged in the drawing direction of the yarn 20.

  As a result, the surface of the tip side taper portion 32b that easily comes into contact with the yarn 20 drawn from the storage region 32e becomes the drawing region 32f, so that the yarn 20 can be reliably rolled on the surface of the drawing region 32f to fluff. it can.

  Moreover, in the automatic winder 1 of this embodiment, the lathe process is performed with respect to the surface of the extraction | drawer area | region 32f.

  Thereby, the surface roughness as described above can be easily realized for the drawing region 32f.

  Further, in the automatic winder 1 of the present embodiment, the yarn supplying section 7 includes a bobbin support peg 9 that supports a yarn supplying bobbin 21 around which a yarn 20 spun by a ring spinning machine is wound.

  Thereby, in the automatic winder 1 which supports the yarn supplying bobbin 21 and winds it while storing the yarn of the yarn supplying bobbin 21, it is possible to effectively fluff the spun yarn.

  Next, a modification of the above embodiment will be described with reference to FIGS. In the description of this modification, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.

  The yarn storage device 5 of the modification shown in FIGS. 5 and 6 has a flyer (bar-shaped resistance member, drawn-out yarn guide member) 32g that can rotate relative to the yarn storage roller 32 instead of the rubber band 32d of the above embodiment. Prepare. The flyer 32g is disposed in the vicinity of the end surface of the tip portion of the yarn accumulating roller 32 and is configured to be rotatable around the rotation center of the yarn accumulating roller 32. The yarn 20 is pulled out from the storage area 32e of the yarn storage roller 32, and is then hooked on the tip of the flyer 32g, and is drawn out downstream via the drawing guide 37.

  The yarn 20 drawn from the storage region 32e to the tip side is guided by the flyer 32g so as to come into contact with the surface of the draw region 32f (including the surface of the tip side taper portion 32b).

  The flyer 32g is given a rotational resistance to the yarn accumulating roller 32 by, for example, magnetic means. Therefore, when the load on the flyer 32g is equal to or less than a certain value, the flyer 32g rotates integrally with the yarn accumulating roller 32. On the other hand, when the load on the flyer 32g exceeds a certain value, the flyer 32g rotates independently of the yarn accumulating roller 32, and the yarn accumulated in the yarn accumulating roller 32 is unwound.

  In this modification, the tension of the yarn 20 drawn from the yarn accumulating roller 32 can be appropriately adjusted by the flyer 32g. Further, since the yarn 20 can be rotated while being hooked on the fryer 32g, it is easy to wind the yarn 20 around the yarn accumulating roller 32.

  As described above, in the automatic winder 1 according to this modification, when the yarn 20 wound around the storage region 32e is pulled out, the fryer 32g brings the yarn 20 into contact with the surface of the drawing region 32f. To guide.

  Thus, the yarn 20 can be reliably brought into contact with the surface of the drawing region 32f for fluffing. Further, by rotating the yarn 20 on the flyer 32g, it is possible to automatically perform the operation of winding the yarn 20 around the yarn accumulating roller 32.

  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 above embodiment, the surface roughness described above is realized by performing a lathe process on the drawing region 32f. However, not limited to this method, knurling, shot blasting, surface chemical treatment, or the like may be performed. Also by these methods, the above surface roughness can be easily realized. Further, not only the drawing area 32f but also the storage area 32e may be subjected to surface treatment such as lathe processing or knurling.

  The surface roughness does not have to be switched discontinuously at the boundary between the storage region 32e and the extraction region 32f. That is, the surface roughness may gradually change at the boundary between the storage area 32e and the extraction area 32f.

  In the above-described embodiments and modifications, the invention can be applied not only to an automatic winder but also to other yarn winding devices (for example, a spinning machine such as a spinning machine) provided with a yarn storage unit.

1 Automatic winder (yarn winding machine)
2 Winder unit (yarn winding unit)
5 Yarn storage device (yarn storage unit)
7 Yarn supply section 9 Bobbin support peg (support section)
8 Package forming part 32 Yarn storage roller (rotating body)
32b Tip side taper (taper)
32d rubber band (drawn yarn guide member, elastic ring member)
32e Storage area 32f Draw area 32g Flyer (drawn yarn guide member, rod-shaped resistance member)
36 Upper limit sensor (thread detection sensor)

Claims (10)

A yarn supplying section capable of supplying yarn;
A yarn storage unit for winding and storing the yarn of the yarn supplying unit;
A package forming unit for winding a yarn drawn from the yarn storage unit to form a package;
A yarn winding device comprising:
The yarn storage section has a rotating body around which a yarn is wound,
The rotating surface of the rotating body is:
A storage area where the yarns are aligned and wound;
A drawing area that passes when the yarn wound around the storage area is drawn to the package forming portion side;
Have
The yarn winding characterized in that the surface roughness of the drawing contact surface which is a surface with which the yarn passing through in the drawing region contacts is rougher than the surface roughness of the storage contact surface which is a surface with which the yarn wound in the storage region contacts. Taking device. The yarn winding device according to claim 1,
The yarn winding device, wherein the surface roughness of the drawing contact surface is 5 times or more and 50 times or less than the surface roughness of the storage contact surface when compared by arithmetic mean roughness. The yarn winding device according to claim 1,
The package forming unit can pull out the yarn from the yarn storage unit at a speed of 1000 m to 2000 m per minute,
The yarn winding device, wherein the surface roughness of the drawing contact surface is 1 to 2 in terms of arithmetic average roughness. A yarn winding device according to any one of claims 1 to 3,
Provided with a yarn detection sensor for controlling yarn storage,
The yarn winding device according to claim 1, wherein the yarn detection sensor detects a portion close to the drawing region in the storage region. A yarn winding device according to any one of claims 1 to 4,
A yarn winding device comprising: a drawn yarn guide member for guiding the yarn wound in the storage area so that the yarn comes into contact with the drawing contact surface when the yarn is drawn. The yarn winding device according to claim 5,
The yarn winding device, wherein the drawn yarn guide member is an elastic ring member. The yarn winding device according to claim 5,
The yarn take-up device, wherein the drawn-out yarn guide member is a rod-like resistance member attached so as to be rotatable relative to a rotating body around which the yarn is wound. A yarn winding device according to any one of claims 1 to 7,
The rotating body is formed with a tapered portion whose diameter increases as it goes to the end in the axial direction,
The yarn winding device, wherein the drawing contact surface includes a surface of the tapered portion in the drawing direction of the yarn. A yarn winding device according to any one of claims 1 to 8,
A bobbin characterized in that at least one of the drawing contact surface and the storage contact surface is subjected to any one of knurling, shot blasting, lathe formation with a lathe, and surface chemical treatment. Taking device. A yarn winding device according to any one of claims 1 to 9,
The yarn supply device, wherein the yarn supply unit includes a support unit that supports a yarn supply bobbin around which a yarn spun by a ring spinning machine is wound.

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