JP2010163275A - Yarn winding apparatus, spinning winding machine using the yarn winding apparatus, yarn winding method, spinning winding method of adopting the yarn winding method and tapered end package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn winding apparatus capable of forming a tapered end package by winding a monofilament by cross-winding. <P>SOLUTION: The yarn winding apparatus 1 includes a bobbin holder 3 for supporting a plurality of winding bobbins 2 for winding yarns Y supplied in a plurality of pieces, a plurality of belt type traverse devices 5 having yarn guides 4 capable of capturing the respective yarns Y and traversing the respective yarns Y to the respective winding bobbins 2 by reciprocating the yarn guide 4, and a contact roller 11 arranged between the plurality of belt type traverse devices 5 and the bobbin holder 3 and pressed to a package Q formed on the respective winding bobbins 2. The respective belt type traverse devices 5 are constituted so that a reciprocating width of reciprocating motion of the yarn guide 4 can be changed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a yarn winding device, a yarn winding machine using this yarn winding device, a yarn winding method, a yarn winding method employing this yarn winding method, and a taper end package. .

  As this type of technology, Patent Document 1 (Japanese Patent Laid-Open No. 5-24740) discloses that for each of a plurality of bobbins arranged in parallel in the axial direction so that the yarn can be wound around the plurality of bobbins. A first traverse blade and a second traverse blade provided slightly deviated on the upstream side in the yarn winding direction, wherein the first and second traverse blades rotate in opposite directions, Disclosed is a yarn traversing device for traversing while delivering.

  However, in the configuration of Patent Document 1, since the traverse width is fixed, only a so-called cheese package (cylindrical package) can be formed as shown in FIG. Therefore, it is impossible to wind up a monofilament that easily breaks the end face.

  The present invention has been made in view of such various points, and its main object is to provide a yarn winding device that can form a taper end package by winding a monofilament with a cross winding. Another object of the present invention is to provide a yarn winding method which can form a taper end package by winding a monofilament by cross winding.

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 the aspect of the present invention, a yarn winding device configured as follows is provided. That is, the yarn winding device has a winding bobbin support portion for supporting a plurality of winding bobbins for winding a plurality of yarns supplied, and a yarn guide capable of catching each of the yarns. The yarn guide is reciprocated to traverse each yarn with respect to each take-up bobbin, provided between the plurality of traverse devices, the plurality of traverse devices, and the take-up bobbin support portion, A contact roller pressed against a package formed on each winding bobbin. Each traverse device is configured to be able to change the reciprocal width of the reciprocating motion of the yarn guide. According to the above configuration, a so-called taper end package can be produced in a configuration unique to cross winding in which the contact roller is provided. Therefore, it becomes possible to wind up the monofilament which is easily broken in the end surface by cross winding.

  The above-described yarn winding device is further configured as follows. That is, a traverse control unit is provided for controlling the traverse device so that the reciprocating width of the reciprocating motion of the yarn guide gradually decreases from the beginning to the end of winding. Each traverse control unit controls the traverse device so that the traverse angle is 1 degree or less. According to the special twill angle described above, the finish of the end face shape of the tapered end package is good.

  According to another aspect of the present invention, a spinning winder configured as follows is provided. That is, the spinning winder includes a spinning unit that spins a monofilament, and the yarn winding device according to any one of the above that directly winds the monofilament spun from the spinning unit. According to the above configuration, it is possible to produce a tapered end package by winding a monofilament that tends to collapse the end surface by cross winding.

  Moreover, the taper end package formed using the above-described spinning winder is obtained by winding a monofilament directly by cross winding.

  According to another aspect of the present invention, the yarn winding is performed by the following method. That is, when winding a plurality of yarns on a winding bobbin while traversing with cross winding, the traversing width of each yarn is gradually narrowed from the beginning to the end of winding. According to the above method, it is possible to wind up a monofilament that is likely to collapse the end face as a so-called tapered end package by cross winding.

  The above-described yarn winding is further performed by the following method. That is, the twill angle is set to 1 degree or less. According to the special twill angle described above, the finish of the end face shape of the tapered end package is good.

  According to another aspect of the present invention, the take-up winding is performed by the following method. That is, it includes a spinning step of spinning the monofilament, and a winding step of winding the spun monofilament directly by any one of the above-described yarn winding methods. According to the above method, it is possible to produce a taper end package by winding a monofilament that tends to collapse on the end surface by cross winding.

  The tapered end package formed by the above-described spinning winding method is formed by directly winding a monofilament with a cross winding.

1 is a perspective view of a yarn winding device according to an embodiment of the present invention. Front enlarged view of the traverse device Enlarged view of the thread guide Front enlarged view of the traverse device Control block diagram of yarn winding device Diagram showing control pattern of traverse device Partial enlarged view of the tip of the bobbin holder The figure which shows the index of evaluation in the test for confirming the technical effect by the special setting of the twill angle Calculation results to confirm the technical effect of the special setting of the twill angle Diagram for explaining the causal relationship between the finish of the end face shape and the twill angle

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view of a yarn winding device according to an embodiment of the present invention. As shown in FIG. 1, the yarn winding device 1 according to the present embodiment includes a plurality (four in the present embodiment) for winding the yarn Y supplied in a plurality (four in the present embodiment). ) Has a bobbin holder 3 (winding bobbin support portion) arranged coaxially from one direction and a yarn guide 4 capable of catching each of the yarns Y. The yarn guide 4 And a plurality of (four in this embodiment) traverse devices 5 that traverse each yarn Y with respect to each take-up bobbin 2 by reciprocating them. Each traverse device 5 is configured to shift the reciprocating range of the reciprocating motion of each yarn guide 4 in the longitudinal direction of the bobbin holder 3. Hereinafter, the configuration of the yarn winding device 1 will be described in detail.

  In this embodiment, the yarn winding device 1 is applied to a spinning winder 7 including a spinning unit (not shown) that simultaneously spins a plurality of yarns Y that are synthetic fibers such as multifilaments and monofilaments. That is, the spinning winder 7 includes a spinning unit that spins a plurality of yarns Y, and the above-described yarn winding device 1 that directly winds the plurality of yarns Y spun from the spinning unit, It is configured with. Then, each yarn Y spun from the spinning section is sent to the traverse device 5 through a traverse fulcrum guide 8 that is schematically shown supported by the attachment frame 6, and wound while being traversed by the traverse device 5. The bobbin 2 is wound up.

  Specifically, the above-described yarn winding device 1 is provided with a device main body 9, a turret board 10 rotatably supported on a side surface of the apparatus main body 9, and a horizontal projection from the turret board 10. A pair of the bobbin holders 3, the beam bodies 12 that support the plurality of traverse devices 5 and the contact rollers 11, and a keyboard 13 (expansion / contraction amount input means) provided on a side surface of the device main body 9 are provided.

  Hereinafter, for convenience of explanation, in the following explanation, the term “tip side” simply means the leading end side in the projecting direction of the bobbin holder 3, and the term “proximal end side” means the projecting direction of the bobbin holder 3. It shall mean the proximal end side.

  The bobbin holder 3 supports the plurality of take-up bobbins 2 and is a cantilever projecting in a pair from the turret board 10 in the horizontal direction. With this configuration, the plurality of winding bobbins 2 are externally fitted in order from the distal end side to the proximal end side with respect to the bobbin holder 3 and are packed toward the turret board 10. Can be spread on the bobbin holder 3 without any gaps. The bobbin holder 3 is configured to rotate at a predetermined rotational speed together with the plurality of winding bobbins 2 by a bobbin holder motor 14 (see also FIG. 5) provided in each bobbin holder 3.

  The traverse device 5 is configured as a so-called belt type in the present embodiment. FIG. 2 is an enlarged front view of the traverse device. As shown in FIG. 2, the belt-type traverse device 5 includes an endless belt 15 to which the yarn guide 4 is attached, and a part of the endless belt 15 is substantially parallel to the longitudinal direction of the bobbin holder 3. Thus, a pair of support units 16 that support the endless belt 15 and a drive motor 17 (belt drive source) that drives the endless belt 15 are provided. In the belt-type traverse device 5, the drive motor 17 reciprocates the endless belt 15 so that the yarn guide 4 can reciprocate substantially parallel to the longitudinal direction of the bobbin holder 3. The support unit 16 and the drive motor 17 are attached to a plate-like base 18, and the base 18 is fixed to the beam body 12 in an arbitrary posture. A rail 19 that linearly guides the yarn guide 4 extends between the pair of support units 16 so that the yarn guide 4 does not flutter when the endless belt 15 reciprocates.

  In this embodiment, a timing belt is used as the endless belt 15, and the endless belt 15 travels on an isosceles triangular locus by being wound around a pair of support units 16 and a drive motor 17. Yes.

  The support unit 16 includes a pulley 20 around which the endless belt 15 is wound, and a stay 21 for rotatably fixing the pulley 20 to the base 18. The stay 21 protrudes from the pulley 20 and extends toward the drive motor 17. The stay 21 is fastened and fixed to the base 18.

  The drive motor 17 is a pulse motor in this embodiment, and is connected to a winding control unit 60 (see FIG. 5) described later.

  The yarn guide 4 is configured to capture the yarn Y using the tension of the yarn Y. FIG. 3 is an enlarged view of the yarn guide. As shown in FIG. 3, the yarn guide 4 includes a fitting portion 22 having a U-shaped cross section for fitting the yarn guide 4 to the endless belt 15, and an upper end of the fitting portion 22. And a yarn catching portion 23 to be formed. The yarn catching portion 23 is composed of a pair of inclined portions 25 having inclined surfaces 24 on which the yarn Y traveling between the traverse fulcrum guide 8 and the winding bobbin 2 shown in FIG. Between the pair of inclined portions 25, a yarn accommodating groove 26 for accommodating and capturing the yarn Y is formed. In this configuration, when the yarn guide 4 travels in the direction of the thick arrow B in FIG. 3, the inclined surface 24 of the inclined portion 25 collides with the yarn Y, and the yarn Y is bent slightly by the inclined portion 25. A resultant force P of the tension of the yarn Y acting in different directions is generated in a direction opposite to the traveling direction of the yarn guide 4. Then, due to the presence of the resultant force P, the yarn Y moves on the inclined surface 24 of the inclined portion 25 toward the top of the inclined portion 25 and is accommodated in the yarn accommodating groove 26 eventually.

  A spinning section (not shown) melts the raw material of the synthetic fiber and discharges it from the die, thereby continuously spinning the plurality of yarns Y.

  The apparatus main body 9 includes a winding control unit 60 (see also FIG. 5).

  The turret board 10 is provided with a turret motor 27 (see also FIG. 5) for rotationally driving the turret board 10. When the bobbin is changed, the turret board 10 is driven to rotate 180 degrees counterclockwise by the turret motor 27.

  The contact roller 11 is provided between the plurality of belt-type traverse devices 5 and the bobbin holder 3, and comes into contact with a package formed on each take-up bobbin 2. Each yarn Y which is shaken is wound. The contact roller 11 extends parallel to the longitudinal direction of the bobbin holder 3.

  The beam body 12 extends in parallel to the longitudinal direction of the bobbin holder 3 and has an inclined surface 12a to which a plurality of belt-type traverse devices 5 are attached. The triangular traversing surface that can be specified by traversing each yarn Y between the traverse fulcrum guide 8 and the yarn guide 4 is substantially parallel to the inclined surface 12 a and is on the circumferential surface of the contact roller 11. On the other hand, there is a relationship between a circle and a tangent in a sectional view.

  The configuration of the yarn winding device 1 has been described above. Next, the arrangement relationship of the adjacent belt-type traverse devices 5 will be described with reference to FIG.

  That is, as shown in FIG. 2, in the present embodiment, the adjacent belt-type traverse devices 5 are arranged so as to overlap each other. Specifically, the adjacent belt-type traverse devices 5 overlap each other by inclining the rails 19 with respect to the longitudinal direction of the bobbin holder 3. In addition, since the rail 19 is equivalent to the locus | trajectory of the reciprocating motion of the thread | yarn guide 4, it can be paraphrased as follows. That is, the adjacent belt-type traverse devices 5 overlap each other by inclining the trajectory of the reciprocating motion of the yarn guide 4 with respect to the longitudinal direction of the bobbin holder 3. Further, in the present embodiment, the adjacent belt-type traverse devices 5 have two support units 16 in the running direction of the yarn Y when viewed along the normal direction of the inclined surface 12a of the beam body 12 as shown in FIG. They are arranged so as to overlap each other by being lined up substantially in a line along the line (see thick arrow A in the figure).

  Next, a guideable range as a range in which the yarn guide 4 can guide the yarn Y in the longitudinal direction of the winding bobbin 2 will be described with reference to FIG. FIG. 4 is an enlarged front view of the traverse device. As shown in FIG. 4, a rod winding shallow groove 2 </ b> T for forming a so-called rod winding (also referred to as a tail end winding) is engraved at the end of the winding bobbin 2 of the present embodiment. The A package Q schematically indicated by a two-dot chain line is formed between the rod winding shallow groove 2T and the other end of the winding bobbin 2. The belt-type traverse device 5 is sufficiently wide so that the yarn guide 4 can guide the yarn Y evenly over a wide range including the shallow groove 2T for winding the rod in addition to the package length of the package Q. Designed.

  Next, the configuration of the winding control unit 60 will be described with reference to FIG. FIG. 5 is a control block diagram of the yarn winding device.

  That is, the winding control unit 60 includes a CPU (Central Processing Unit) which is an arithmetic processing device, a control program executed by the CPU and a ROM (Read Only Memory) in which data used for the control program is stored, a program RAM (Random Access Memory) for temporarily storing data during execution. Then, the control program stored in the ROM is read by the CPU and executed on the CPU, so that the control program can execute hardware such as a CPU, a traverse control unit (No. 1 to 4) 61, an origin changing unit. 62, functioning as a bobbin holder control unit 63. The number assigned to each traverse control unit is assigned from the front end side in FIG. Further, a drive motor (No. 1 to 4) 17, a keyboard 13, a bobbin holder motor 14, and a turret motor 27 are connected to the winding control unit 60. The numbers assigned to the respective drive motors are also given from the front end side in FIG. 1 like the traverse control unit.

  Each traverse control unit (No. 1 to 4) 61 includes a control pattern storage unit 64 and an origin storage unit 65, and stores the control pattern stored in the control pattern storage unit 64 and the origin storage unit 65. The drive motors (No. 1 to 4) 17 of the belt-type traverse devices 5 are controlled based on the origin that has been made. Specifically, each traverse control unit (No. 1 to 4) 61 is configured so that each drive motor (No. 1 to 4) 61 has a uniform yarn density in the vicinity of both ends of the package Q formed on the winding bobbin 2. No. 1-4) 17 is configured to be controllable.

  The control pattern storage unit 64 stores a control pattern of the drive motor 17. In the present embodiment, the control pattern is such that the package Q formed on the take-up bobbin 2 becomes a tapered end package as schematically shown by a two-dot chain line in FIG. 4, that is, the traverse inversion interval is gradually increased. Created to be shorter. In other words, the reciprocating width of the reciprocating motion of the yarn guide 4 is gradually narrowed from the winding start to the winding end. The belt-type traverse device 5 according to the present embodiment is configured such that the reciprocating width of the reciprocating motion of the yarn guide 4 can be freely changed by changing the reversal interval in this way. An example of this control pattern is shown in FIG. FIG. 6 is a diagram illustrating a control pattern of the traverse device. In FIG. 6, the vertical axis represents the traverse speed Vt, and the horizontal axis represents time t. In FIG. 4, the traverse speed Vt when the yarn guide 4 advances toward the tip side is set to + in FIG. As shown in FIG. 6, the control pattern according to the present embodiment is specifically created so that the motion patterns in the vicinity of both ends of the traverse of the yarn guide 4 are different. More specifically, in FIG. 4, the traverse speed Vt of the yarn guide 4 immediately after the yarn guide 4 reaches the right end of the reciprocating range of the reciprocating motion and reverses is set slightly higher. That is, the feedforward control is performed only at the right end in order to eliminate the stay of the yarn Y during reversal. Note that the control pattern shown in FIG. 6 is created so that the twill angle is 0.5 degrees. This twill angle is preferably set to 1 degree or less. As is well known, the adjustment of the traverse angle may be performed by increasing or decreasing the amplitude of the traverse speed Vt, for example.

  The origin storage unit 65 stores an origin that serves as a reference for the reciprocating motion of the yarn guide 4 of the belt-type traverse device 5. Here, the “origin” means the position of the center point of the reciprocating motion of the yarn guide 4 of the belt-type traverse device 5 in this embodiment.

  The origin changing unit 62 changes the origin stored in the origin storage unit 65 of each traverse control unit (No. 1 to 4) 61 based on the expansion / contraction amount of the winding bobbin 2 input via the keyboard 13. To do. FIG. 7 is a partially enlarged view of the tip of the bobbin holder. Specifically, the expansion / contraction amount is the expansion / contraction amount in the bobbin length direction of the entire plurality of winding bobbins 2, and is the most distal side among the plurality of winding bobbins 2 arranged in a row on the bobbin holder 3. The position of the end face E on the front end side of the winding bobbin 2 can be obtained by reading it on the scale S in FIG. 7 carved on the bobbin holder 3. For example, when the position of the end surface E of the winding bobbin 2 is “−2.8 mm” on the scale S as shown in FIG. 7, the expansion / contraction amount is “−2.8 mm”. . Then, the origin changing unit 62 adds the amount 7 / 8ΔL obtained by dividing the expansion / contraction amount ΔL by 8 and multiplying by 7 to the origin stored in the origin storage unit 65 of the traverse control unit (No. 1) 61. . Similarly, the origin changing unit 62 sets 5 / 8ΔL as the origin stored in the origin storage unit 65 of the traverse control unit (No. 2) 61, and 3 / 8ΔL as the origin of the traverse control unit (No. 3) 61. 1/8 ΔL is added to the origin stored in the origin storage unit 65 of the traverse control unit (No. 4) 61 to the origin stored in the storage unit 65, respectively. The operation of the origin changing unit 62 described above is that the bobbin length varies depending on the humidity of the usage environment because the winding bobbin 2 is made of paper, and the change in bobbin length is the same for all winding bobbins 2. It is assumed that they occur evenly.

  The bobbin holder control unit 63 controls the rotation of the bobbin holder motor 14.

  In addition, the winding control unit 60 includes a turret control unit that controls the rotation of the turret motor 27.

  Next, the operation of this embodiment will be described. First, the operator packs four empty winding bobbins 2 in the direction of the turret board 10 into the pair of bobbin holders 3.

  Then, the operator operates the keyboard 13 or the like to operate the spinning winder 7 and reads the above-described extension amount and inputs it to the winding control unit 60. Then, the origin changing unit 62 changes the origin stored in the origin storage unit 65 of each traverse control unit (No. 1 to 4) 61 as described above. By changing the origin, the reciprocating range of the reciprocating motion of each yarn guide 4 is slightly shifted in the longitudinal direction of the bobbin holder 3.

  The four yarns Y spun from the spinning unit (spinning step) are sucked and held by a suction gun (not shown), and the bobbin holder control unit 63 drives the bobbin holder motor 14 to move the winding bobbin 2 Rotate at the desired number of revolutions. Each yarn Y sucked and held by the suction gun is guided to the rod winding shallow groove 2T of each winding bobbin 2. As a result, each yarn Y is strongly held by the rod winding shallow groove 2T of each winding bobbin 2, and each yarn Y is released from the suction holding state by the suction gun, so that each yarn Y becomes a rod winding shallow groove 2T. Then, it rides on the outer peripheral surface of the winding bobbin 2 and moves while drawing a spiral toward the center of the bobbin length of the winding bobbin 2.

  Next, each traverse control unit (No. 1 to 4) 61 is configured so that each drive motor (No. 1-4) is based on the control pattern stored in the control pattern storage unit 64 and the origin stored in the origin storage unit 65. No. 1-4) 17 is controlled. As a result, each yarn Y is captured by each yarn guide 4 and begins to traverse so as to be cross-wound (see also FIG. 3), and on each winding bobbin 2 is shown in FIG. Such a taper end type package Q is formed by cross winding (winding step).

  When the package Q is fully wound, the turret control unit drives the turret motor 27 to rotate the turret board 10 by 180 degrees counterclockwise, and each traverse control unit (No. 1 to 4) 61 is operated by the yarn guide 4. Is moved to a position facing the shallow groove 2T for rod winding. Then, each yarn Y is firmly held in the shallow winding groove 2T of the empty winding bobbin 2 as described above. Subsequently, the traverse control unit (Nos. 1 to 4) 61 again determines each drive motor based on the control pattern stored in the control pattern storage unit 64 and the origin stored in the origin storage unit 65. (No. 1-4) 17 is controlled. As a result, the taper end type package Q as shown in FIG. 4 is again formed by cross-winding on each winding bobbin 2 without stopping the capture of the yarn Y by the yarn guide 4.

  Next, a test for confirming the technical effect by setting the twill angle to 1 degree or less as described above will be described. The numerical limitation regarding the twill angle is reasonably supported by the following confirmation test. In the following confirmation test, the above-described yarn winding device 1 was used to investigate the relationship between the finish of the end surface shape of the taper end package Q and the twill angle.

<Evaluation method>
First, an evaluation method for each confirmation test will be described. FIG. 8 is a diagram showing an evaluation index in a test for confirming the technical effect by the special setting of the twill angle. FIG. 8A shows the appearance of the tapered end package according to the embodiment, and FIG. 8B shows the appearance of the tapered end package according to the comparative example. That is, the end face shape of the package that has been fully wound is observed, and if this end face shape exhibits a straight and beautiful silhouette as shown in FIG. 8A, the confirmation test is evaluated as “good (good)”. On the other hand, if this end face shape is uneven as shown in FIG. 8B, the confirmation test is evaluated as “x (defect)”. However, if it cannot be determined whether it should be evaluated as “◯” or “×”, it is evaluated as “Δ”.

<Test conditions>
The test conditions common to each confirmation test are as follows.
Yarn Y: monofilament (20 dtex) having a substantially circular cross section
-Diameter of winding bobbin: φ110mm
-Diameter of taper end package Q: φ200mm
・ Taper end package Q winding width: winding start = 270 mm to winding end = 114 mm
The taper angle A of the end surface of the taper end package Q (see FIG. 8): 30 [deg. ]
Twill angle θ (see also FIG. 8): as shown in Table 1 below. Note that the traverse speed Vt set slightly higher immediately after the inversion shown in FIG. 6 is not considered.
-Free length (DELTA) F (refer FIG. 4) which is the travel distance of the thread | yarn Y between the yarn guide 4 and the contact roller 11 can be set between 25-45 mm, and was set to 25 mm in this test.

<Test results>
Next, the test results of each confirmation test are shown in Table 1 below.

<Discussion 1>
According to Table 1 above, it can be seen that when the twill angle is 1 degree or less, the end face shape finish is good. Further, the finished shape of the end face shape obtained by setting the twill angle to 1 degree or less was not obtained when the twill angle was set to 1.2 degrees or more.

<Discussion 2>
Hereinafter, the inventor of the present application described the twill angle θ [deg. The background of finding a special numerical limitation of] is introduced.

  In the first place, in general, when a multi-filament is wound up by cross winding to form a cheese package, a twill angle θ [deg. ] Is set to 4 to 8 as common technical knowledge. In this case, the twill angle θ [deg. ] Is less than 4, the end face of the cheese package bulges in the longitudinal direction of the package, and conversely, the twill angle θ [deg. ] Is over 8, the end face of the cheese package will be wrinkled.

  This time, when the monofilament was cross-wound, the taper end package was adopted from the viewpoint that the end face of the monofilament easily collapsed. ] Was going to be adopted as 4. However, this twill angle [deg. ], The finish of the end surface shape of the taper end package was unsatisfactory in appearance, as shown in FIG.

  Here, the inventor of the present application described the twill angle θ [deg. ] In the first place, it is intended for cheese packages, so take the plunge angle θ [deg. ] Is greatly shaken, the above-mentioned twill angle θ [deg. ] Significantly smaller twill angle θ [deg. ], That is, a tread angle θ [deg. ], It was found that a good finish of the end face shape as shown in FIG. 8A can be obtained.

  And this inventor performed well-known winding density calculation in order to reproduce the significance of numerical limitation on calculation while implementing said confirmation test. FIG. 9 is a calculation result of calculation for confirming the technical effect by the special setting of the twill angle. That is, FIG. 9A shows the twill angle θ [deg. ] Shows the distribution of the winding density when 0.5 is set, and FIG. 9B shows the twill angle [deg. ] Is a winding density distribution when 6.0 is 6.0. 9A and 9B, the horizontal axis represents the winding width position [mm], that is, the position in the longitudinal direction of the package, and the end in the longitudinal direction at the beginning of winding of the package is the winding width position = 0 mm. . 9A and 9B, the vertical axis indicates the winding density [%]. The winding density [%] means the occupied sectional area of the yarn in the space, and the winding density [%] at the center in the longitudinal direction of the package is 100. According to FIGS. 9A and 9B, the twill angle θ [deg. ] Is 0.5, the winding density [%] is uniform from the center of the package in the longitudinal direction to the end in the longitudinal direction, whereas the twill angle θ [deg. ] Is 6.0, it can be seen that the winding density [%] at the end in the longitudinal direction is extremely high as compared with the center in the longitudinal direction of the package. This is because the twill angle [deg. ] Becomes larger, as shown in FIG. 10, the followability of the yarn to the movement of the yarn guide when the yarn guide is reversed is deteriorated. As a result, the longitudinal direction end of the package is This is thought to be because the yarn tries to stay for a long time compared to the center. The calculation data indicated by the broken line in FIG. 9B is data corresponding to the movement of the yarn before the yarn reversal (not the yarn guide reversal) in FIG. The calculated data shown in FIG. 10 (b) is data corresponding to the movement of the yarn after the yarn is reversed. That is, the yarn follows the movement of the yarn guide well in the stage before the yarn reversal, but particularly in the stage after the yarn reversal, it follows the movement of the yarn guide. It is difficult to follow. This appears as different calculation data as indicated by a solid line and a broken line on the graph of FIG. 9B.

(Summary)
(Claim 1)
As described above, in the above-described embodiment, the yarn winding device 1 is configured as follows. That is, the yarn winding device 1 includes a bobbin holder 3 that supports a plurality of winding bobbins 2 for winding a plurality of yarns Y supplied, and a yarn guide 4 that can capture each of the yarns Y. The plurality of belt-type traverse devices 5, the plurality of belt-type traverse devices 5, and the bobbin that traverse each yarn Y with respect to each take-up bobbin 2 by reciprocating the yarn guide 4 A contact roller 11 provided between the holder 3 and pressed against the package Q formed on each winding bobbin 2. Each belt-type traverse device 5 is configured to be able to change the reciprocal width of the reciprocating motion of the yarn guide 4. According to the above configuration, a so-called tapered end package Q can be produced in a configuration unique to cross winding in which the contact roller 11 is provided. Therefore, it is possible to wind up monofilaments that are liable to collapse end surfaces by cross winding.

(Claim 2)
The yarn winding device 1 is further configured as follows. That is, traverse control units (No. 1 to 4) 61 for controlling the belt-type traverse device 5 are provided so that the reciprocating width of the reciprocating motion of the yarn guide 4 gradually decreases from the beginning to the end of winding. . Each traverse control unit (No. 1 to 4) 61 controls the belt-type traverse device 5 so that the traverse angle is 1 degree or less. According to the special twill angle, the finish of the end surface shape of the taper end package Q is good.

(Claim 3)
The spinning winder 7 is configured as follows. That is, the spinning winder 7 includes a spinning unit that spins a monofilament, and the yarn winding device 1 that directly winds the monofilament spun from the spinning unit. According to the above configuration, the taper end package Q can be produced by winding the monofilament that tends to collapse the end surface by cross winding.

(Claim 4)
Further, the taper end package Q formed using the above-described spinning winder 7 is a monofilament wound directly by cross winding.

(Claim 5)
Further, the yarn winding is performed by the following method. That is, when winding a plurality of yarns Y around the winding bobbin 2 while traversing them by cross winding, the traversing width of each yarn Y is gradually narrowed from the beginning to the end of winding. According to the above method, it is possible to wind a monofilament that tends to collapse the end face as a so-called tapered end package Q by cross winding.

(Claim 6)
The above-described yarn winding is further performed by the following method. That is, the twill angle θ is set to 1 degree or less. According to the special traverse angle θ, the finish of the end surface shape of the taper end package Q is good.

(Claim 7)
Further, the spinning winding is performed by the following method. That is, it includes a spinning process for spinning monofilaments, and a winding process for winding the spun monofilaments directly by the yarn winding method. According to the above method, the taper end package Q can be produced by winding a monofilament that tends to collapse the end surface by cross winding.

(Claim 8)
The taper end package Q formed by the above-described spinning winding method is formed by directly winding a monofilament by cross winding.

  Although the preferred embodiments of the present invention have been described above, the above embodiments can be implemented with the following modifications.

  That is, for example, in the above-described embodiment, the belt-type traverse device 5 is adopted as the traverse device 5, but instead, if the reciprocating width of the reciprocating motion of the yarn guide 4 can be changed, other traverses The device 5, for example, an arm type traverse device or a cam type traverse device may be adopted. The arm-type traverse device is a traverse device that reciprocates and drives an arm member having a yarn guide formed at the tip by a drive motor configured as a voice coil motor. The cam-type traverse device includes a traverse cam, a traverse guide that is slidably engaged with a traverse groove provided in a spiral shape on the peripheral surface thereof, and a traverse guide drive motor that rotates the traverse cam. Is a traverse device.

  Moreover, although the case where the monofilament was mainly wound was demonstrated in the said embodiment, it may replace with this and a multifilament may be wound by cross winding, and a taper end package may be formed.

  In the specification of the present application, the taper end package means only those having a taper angle A of 45 degrees or less in FIG.

  Further, the yarn winding device 1 of the present application is intended for cross winding, and so-called Pann winding is not included in the technical scope of the invention disclosed in the present application.

DESCRIPTION OF SYMBOLS 1 Yarn winding device 2 Winding bobbin 3 Bobbin holder 4 Thread guide 5 Belt type traverse device 7 Spinning winder

Claims (8)

A take-up bobbin support for supporting a plurality of take-up bobbins for winding a plurality of supplied yarns, respectively;
A plurality of traverse devices having a yarn guide capable of catching each of the yarns, and traversing each yarn with respect to each winding bobbin by reciprocating the yarn guide;
A contact roller provided between the plurality of traverse devices and the winding bobbin support, and pressed against a package formed on each winding bobbin;
With
Each traverse device is configured to be capable of changing the reciprocal width of the reciprocating motion of the yarn guide.
A yarn winding device characterized by that. The yarn winding device according to claim 1,
A traverse control unit for controlling the traverse device is provided so that the reciprocating width of the reciprocating motion of the yarn guide gradually decreases from the beginning to the end of winding,
Each traverse control unit controls the traverse device so that the traverse angle is 1 degree or less,
A yarn winding device characterized by that. A spinning section for spinning monofilaments;
The yarn winding device according to claim 1 or 2, wherein the monofilament spun from the spinning section is directly wound.
Spinning winder equipped with A taper end package formed using the spinning winder according to claim 3. When winding a plurality of yarns around a winding bobbin while traversing with a cross winding, gradually reduce the traversing width of each yarn from the beginning to the end of winding.
A yarn winding method characterized by that. The yarn winding method according to claim 5,
The twill angle is 1 degree or less,
A yarn winding method characterized by that. A spinning process for spinning monofilaments;
A winding step of directly winding the spun monofilament by the yarn winding method according to claim 5 or 6;
A method for winding and spinning the yarn. A tapered end package formed by the spinning winding method according to claim 7.

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