JP2010077576A - Spinning machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spinning machine capable of stabilizing yarn tension given to the spun yarn drawn from a spinning device to obtain the span yarn with uniform quality. <P>SOLUTION: A spinning unit 2 of a spinning machine is equipped with a spinning device 9, a winding device 13, and a yarn slack eliminating device 12. The spinning device 9 produces a spun yarn 10 by applying twists to a fiber bundle 8. The winding device 13 forms a package 45 by winding the spun yarn 10 discharged from the spinning device 9. The yarn slack eliminating device 12 is set between the spinning device 9 and the winding device 13, and temporarily stores the spun yarn 10 by winding the spun yarn 10 around the outer periphery of a rotating yarn slack eliminating roller 21. The spinning machine applies tension to the spun yarn 10 discharged from the spinning device 9, with the yarn slack eliminating device 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a spinning machine. Specifically, the present invention relates to a configuration for applying tension to the spun yarn in the spinning machine.

Conventionally, for example, a spinning machine as disclosed in Patent Document 1 is known. In general, this type of spinning machine nips spun yarn sent from a spinning device by a metal delivery roller that is rotationally driven and a rubber nip roller that is disposed opposite the delivery roller and rotates in a driven manner. Are configured to be conveyed. That is, tension is given to the yarn drawn from the spinning device by the rotation of the delivery roller. By applying a predetermined tension to the yarn, the yarn can be pulled out from the spinning device at a predetermined speed and conveyed downstream at a predetermined speed.
JP 2004-124333 A

  By the way, during spinning with a spinning machine as in Patent Document 1, the yarn thickness (count), the yarn drawing tension during spinning, the yarn tension during clearing (yarn defect detection), and the like become desired values. It is very important from the viewpoint of yarn quality to control accurately. That is, if the yarn thickness and the drawing tension during spinning vary during spinning, the yarn quality will be adversely affected. Moreover, if the tension at the time of clearing is not constant, accurate clearing cannot be performed.

  The thickness of the yarn is determined by the speed ratio between the delivery roller and the back roller. The drawing tension during spinning is determined by the speed ratio between the delivery roller and the front roller. The tension during the clearing is determined by the speed ratio between the delivery roller and the winding device (if there is a yarn slack eliminating device, the delivery roller and the yarn slack eliminating device). As described above, since the yarn conveyance speed by the delivery roller is an important parameter that affects the yarn quality, it is necessary to convey the yarn at an accurate speed by the delivery roller.

  On the other hand, in the winding device provided on the downstream side of the delivery roller, the yarn is traversed on the surface of the package, so that the yarn tension always varies on the downstream side of the delivery roller. Although the fluctuation of the tension is alleviated to some extent by the yarn tension adjusting device, it may be transmitted to the delivery roller upstream of the yarn tension adjusting device. At this time, if the nip force of the yarn by the delivery roller and the nip roller is not sufficient, slip occurs between the yarn and the roller, and the fluctuation of the tension is transmitted to the upstream side. Will fall. In order to prevent such fluctuations in the yarn conveyance speed, the nip force of the yarn by the delivery roller and the nip roller is preferably strong and stable.

  However, with the conventional configuration in which the yarn is nipped and conveyed by two rollers, there is a limit to gripping the yarn with sufficient force, and a nip force that is strong enough not to be affected by tension fluctuations from the downstream is realized. It was difficult to do. In fact, the nip force varies due to factors such as wear on the surface of the rubber nip roller and assembly accuracy of parts. For this reason, it is difficult to manage the nip force between the plurality of spinning units to be uniform, and the quality of the produced yarn cannot be managed uniformly. Further, when the wear of the rubber on the nip roller surface progresses, the nip force decreases, and the yarn slip often occurs.

  In some cases, the nip roller may be configured to be cantilevered from the viewpoint of maintainability. In this case, it is difficult to adjust the nip force so that the nip force is uniform between one end and the other end of the nip roller. is there. For this reason, for example, when the yarn is swung from side to side due to the traverse, the nip position fluctuates due to the nip position fluctuating, which causes the yarn tension to fluctuate and the clearer frequently makes false detections. It was.

  The nip roller is a consumable part that needs to be replaced in a certain period because the rubber on the surface is worn. Further, cotton or the like is easily wound around the delivery roller and the nip roller, and when it is wound, the operator needs to remove it. As described above, the conveyance of the yarn by the delivery roller and the nip roller has a problem from the viewpoint of a heavy maintenance burden.

  The present invention has been made in view of the above circumstances, and its main purpose is to provide a spinning machine capable of stabilizing the yarn tension applied to the spun yarn drawn from the spinning device and obtaining spun yarn of uniform quality. It is to provide.

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 spinning machine having the following configuration is provided. That is, the spinning machine includes a spinning device, a winding device, and a yarn storage device. The spinning device twists the fiber bundle to produce a spun yarn. The winding device winds the spun yarn sent from the spinning device to form a package. The yarn accumulating device is disposed between the spinning device and the winding device, and winds the spun yarn around an outer periphery of a rotating yarn accumulating roller to temporarily store the yarn. The spinning machine draws the spun yarn from the spinning device while applying tension by the yarn accumulating device.

  That is, since the spun yarn is tensioned by the yarn accumulating roller around which the spun yarn is wound, for example, compared with the conventional configuration in which the spun yarn is conveyed while being nipped between two opposed rollers. The contact area between the yarn accumulating roller as a conveying member and the spun yarn is large, and tension can be applied to the spun yarn with a sufficient conveying force. Accordingly, since the spun yarn can be drawn out from the spinning device at a stable speed without causing a slip between the yarn accumulating roller and the spun yarn, a spun yarn with uniform quality can be produced.

  In the spinning machine, it is preferable that the spun yarn delivered from the spinning device is directly introduced into the yarn accumulating device without passing through another yarn conveying member.

  Thereby, tension can be given to the spun yarn delivered from the spinning device by the yarn accumulating device without being influenced by other yarn conveying members. In addition, while avoiding problems such as winding of the fluff around the other yarn conveying member that occurs when another yarn conveying member exists between the spinning device and the yarn accumulating device, the maintainability is improved. By reducing the number of parts, the entire spinning machine can be simplified and costs can be reduced.

  In the spinning machine, the yarn accumulating roller is preferably made of a highly wear-resistant material (for example, metal).

  As a result, the durability is improved as compared with the rubber roller, so that the number of consumable parts can be reduced as compared with the conventional configuration, and stable yarn quality can be maintained over a long period of time. In addition, since the change in performance due to wear can be suppressed, for example, compared to the conventional configuration in which spun yarn is conveyed by a rubber roller, variation in yarn conveyance force among a plurality of spinning units included in the spinning machine is reduced. And the quality of the yarn produced by the plurality of units can be kept uniform among the units. In addition, if a material with high workability, such as metal, is used, it becomes easy to manufacture the yarn accumulating roller with high processing accuracy. It becomes easier to manage the quality so that it is uniform among the units.

  In the spinning machine, the yarn accumulating device is preferably a yarn slack eliminating device configured to absorb fluctuations in yarn tension between the yarn accumulating device and the winding device.

  As a result, fluctuations in yarn tension between the yarn slack eliminating device and the winding device can be prevented from affecting the yarn tension between the yarn slack eliminating device and the spinning device, further improving yarn quality. Can be made. Further, since the yarn slack eliminating device has both functions of conveying spun yarn and adjusting yarn tension, a yarn conveying member and a tension adjusting member have been provided separately. Compared with this configuration, the number of parts can be reduced and the cost can be reduced.

  In the spinning machine, it is preferable that the spun yarn can be wound around the outer periphery of the yarn accumulating roller at least 10 times without overlapping.

  In other words, a sufficiently long spun yarn is wound around the outer periphery of the yarn accumulating roller so as to tighten the yarn accumulating roller, so that the conveying force of the spun yarn due to the rotation of the yarn accumulating roller can be sufficiently stabilized.

  Next, a spinning machine (spinning machine) according to an embodiment of the present invention will be described with reference to the drawings. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the yarn during spinning. FIG. 1 is a front view showing the overall configuration of the spinning machine, and FIG. 2 is a longitudinal sectional view of the spinning machine.

  A spinning machine 1 as a spinning device shown in FIG. 1 includes a large number of spindles (spinning unit 2) arranged in parallel. The spinning machine 1 includes a yarn splicing carriage 3, a blower box 80, and a prime mover box 5.

  As shown in FIG. 1, each spinning unit 2 includes, in order from upstream to downstream, a draft device 7, a spinning device 9, a yarn slack eliminating device (yarn storage device) 12, and a winding device 13. It is provided as a main configuration. The draft device 7 is provided in the vicinity of the upper end of the casing 6 of the spinning machine 1, and the fiber bundle 8 sent from the draft device 7 is configured to be spun by the spinning device 9. The spun yarn 10 delivered from the spinning device 9 passes through a yarn clearer 52, which will be described later, and is then sent by the yarn slack eliminating device 12 and wound by the winding device 13, whereby a package 45 is formed.

  The draft device 7 is for drawing the sliver 15 into the fiber bundle 8. As shown in FIG. 2, the draft device 7 includes four rollers: a back roller 16, a third roller 17, a middle roller 19 on which an apron belt 18 is mounted, and a front roller 20.

  Although a detailed configuration of the spinning device 9 is not illustrated, in the present embodiment, a pneumatic type that generates a spun yarn 10 by twisting the fiber bundle 8 using a swirling airflow is adopted.

  A yarn slack eliminating device 12 is provided downstream of the spinning device 9. The yarn slack eliminating device 12 retains the spun yarn 10 sent from the spinning device at the time of splicing by the yarn joining cart 3 (described later) and the function of applying a predetermined tension to the spun yarn 10 and pulling it out from the spinning device 9. And a function of adjusting the tension so that a fluctuation in tension on the winding device 13 (described later) side is not transmitted to the spinning device 9 side. As shown in FIG. 2, the yarn slack eliminating device 12 includes a slack eliminating roller (yarn accumulating roller) 21, a yarn hooking member 22, an upstream guide 23, an electric motor 25, a downstream guide 26, and a yarn accumulating device. A quantity sensor 27.

  The yarn hooking member 22 is configured to be able to engage (hang) with the spun yarn 10, and rotates integrally with the slack eliminating roller 21 while being engaged with the spun yarn 10, thereby the slack eliminating roller 21. It is comprised so that the spun yarn 10 can be wound around the outer peripheral surface.

  The slack eliminating roller 21 is configured such that a predetermined amount of the spun yarn 10 is wound around the outer peripheral surface thereof and stored. Further, the slack eliminating roller 21 is rotationally driven by an electric motor 25. With this configuration, the spun yarn 10 wound around the outer periphery of the slack eliminating roller 21 is wound so as to tighten the slack eliminating roller 21 as the slack eliminating roller 21 rotates, and is upstream of the yarn slack eliminating device 12. The spun yarn 10 is pulled. That is, by rotating the slack eliminating roller 21 with the spun yarn 10 wound around the outer periphery at a predetermined rotation speed, the spun yarn 10 is applied with a predetermined tension and pulled out from the spinning device 9 at a predetermined speed. Can be conveyed downstream.

  A predetermined contact area can be ensured between the slack eliminating roller 21 and the spun yarn 10 by winding a predetermined amount of the spun yarn 10 around the outer periphery of the slack eliminating roller 21. As a result, the slack eliminating roller 21 can hold and pull the spun yarn 10 with a sufficient force, and the spun yarn 10 can be pulled out from the spinning device 9 at a stable speed without causing a slip or the like. Further, as shown in FIG. 2, there is no other configuration (such as a conventional delivery roller) for applying tension to the spun yarn 10 between the spinning device 9 and the yarn slack eliminating device 12. The yarn drawing speed is determined by the rotational speed of the slack eliminating roller 21. Therefore, in the spinning machine 1 of this embodiment, the yarn slack eliminating device 12 applies tension to the spun yarn 10, and the spun yarn 10 can be pulled out from the spinning device 9 at an accurate speed with little variation.

  The yarn storage amount sensor 27 is configured to detect the storage amount of the spun yarn 10 stored on the slack eliminating roller 21 in a non-contact manner and transmit it to the unit controller.

  The upstream guide 23 is disposed slightly upstream of the slack eliminating roller 21. The upstream guide 23 is a guide member that appropriately guides the yarn to the outer peripheral surface of the slack eliminating roller 21, and the twist of the spun yarn 10 that propagates from the spinning device 9 is downstream of the upstream guide 23. It also serves as a twist stopper that prevents it from being transmitted to the side.

  A yarn clearer 52 is provided at a position between the spinning device 9 and the yarn slack eliminating device 12 on the front side of the casing 6 of the spinning machine 1. The spun yarn 10 spun by the spinning device 9 passes through the yarn clearer 52 before being wound by the yarn slack eliminating device 12. The yarn clearer 52 is configured to monitor the thickness of the traveling spun yarn 10 and transmit a yarn defect detection signal to a unit controller (not shown) when a yarn defect of the spun yarn 10 is detected. In a spinning machine having a conventional configuration (for example, Patent Document 1), since the yarn clearer monitored the spun yarn conveyed by the delivery roller, slip occurred between the spun yarn and the delivery roller (and nip roller). In some cases, there was a false detection. In this regard, in this embodiment, as described above, the spun yarn 10 can be pulled out from the spinning device 9 by the yarn slack eliminating device 12 (without causing slip or the like) at a stable speed and tension. Thereby, accurate yarn defect detection by the yarn clearer 52 can be performed.

  Upon receipt of the yarn defect detection signal, the unit controller immediately cuts the spun yarn 10 with the cutter 57, and further stops the draft device 7, the spinning device 9, and the like. Further, the unit controller sends a control signal to the yarn splicing carriage 3 so as to travel to the front of the spinning unit 2. Thereafter, the spinning device 9 and the like are driven again to cause the yarn joining cart 3 to perform yarn joining and resume winding. At this time, the yarn slack eliminating device 12 stays in the slack eliminating roller 21 with the spun yarn 10 continuously sent from the spinning device 9 until the spinning is resumed after the spinning device 9 resumes spinning. Thus, the slack of the spun yarn 10 is removed.

  As shown in FIGS. 1 and 2, the yarn joining cart 3 includes a splicer (yarn joining device) 43, a suction pipe 44, and a suction mouth 46. The yarn splicing carriage 3 is configured to travel on the rail 41 to the spinning unit 2 and stop when a yarn break or yarn cut occurs in a spinning unit 2. The suction pipe 44 sucks and captures the yarn end fed from the spinning device 9 and guides it to the splicer 43 while rotating in the vertical direction around the axis. The suction mouse 46 sucks the yarn end from the package 45 supported by the winding device 13 and guides it to the splicer 43 while rotating in the vertical direction about the shaft. The splicer 43 performs splicing between the guided yarn ends.

  The winding device 13 includes a cradle arm 71 supported so as to be swingable around a support shaft 70. The cradle arm 71 can rotatably support a bobbin 48 for winding the spun yarn 10.

  The winding device 13 includes a winding drum 72 and a traverse device 75. The winding drum 72 is configured to be able to be driven in contact with the outer peripheral surface of the package 45 formed by winding the bobbin 48 and the spun yarn 10 thereon. The traverse device 75 includes a traverse guide 76 that can be engaged with the spun yarn 10. In this configuration, the winding drum 72 is driven by an electric motor (not shown) while the traverse guide 76 is reciprocated by a driving means (not shown), thereby rotating the package 45 in contact with the winding drum 72 and spinning the yarn 10. It is designed to wind up while traversing.

  Next, a detailed configuration of the yarn slack eliminating device will be described with reference to FIG. FIG. 3 is a longitudinal sectional view of the yarn slack eliminating device.

  The slack eliminating roller 21 is made of a wear-resistant material and is fixed to the motor shaft 25a of the electric motor 25. The outer peripheral surface 21a of the slack eliminating roller 21 has a proximal end side tapered portion in order from the proximal end toward the distal end, assuming that the side having the yarn hooking member 22 is the distal end and the side on which the electric motor 25 is disposed is the proximal end. 21b, a cylindrical portion 21c, and a tip side taper portion 21d.

  The cylindrical portion 21c is configured to have a shape in which the tip end side is slightly narrowed, and has a shape that is continuous to the tapered portions 21b and 21d on both sides without a step. In order to obtain a sufficient conveying force of the spun yarn 10 by the slack eliminating roller 21, it is preferable that the spun yarn 10 is wound around the outer peripheral surface of the slack eliminating roller 21 at least 10 times without overlapping. For this reason, the cylindrical part 21c is formed in a dimension that can store the spun yarn 10 for at least 10 rounds. The yarn storage amount sensor 27 is provided so as to face the cylindrical portion 21c, and is configured to detect the amount of yarn stored around the slack eliminating roller 21 and transmit it to the unit controller. .

  The proximal end side taper portion 21b and the distal end side taper portion 21d are each configured to have a gentle taper shape with the end face side being the larger diameter side. On the outer peripheral surface 21a of the slack eliminating roller 21, the proximal end side taper portion 21b smoothly moves the supplied spun yarn 10 from the large diameter portion toward the small diameter portion to reach the intermediate cylindrical portion 21c. The spun yarn 10 is configured to be wound around the surface of the cylindrical portion 21c in an orderly manner. Further, the tip-side taper portion 21d prevents a loop-out phenomenon in which the wound spun yarn 10 comes off at the same time during unwinding, and simultaneously feeds the spun yarn 10 from the small diameter portion to the large diameter portion on the end surface side. And has a function of ensuring a smooth drawing of the spun yarn 10.

  As shown in FIG. 3, the yarn hooking member 22 disposed on the leading end side of the slack eliminating roller 21 is disposed concentrically with the slack eliminating roller 21 and integrally with the slack eliminating roller 21 depending on conditions. Or it is comprised so that it may rotate independently. Specifically, the yarn hooking member 22 includes a fryer shaft 33 that is supported so as to be rotatable relative to the slack eliminating roller 21 and a fryer 38 that is fixed to the tip thereof.

  A permanent magnet is attached to either the flyer shaft 33 or the slack eliminating roller 21, and a magnetic hysteresis material is attached to the other. By these magnetic means, a torque is generated that resists the relative rotation of the yarn hooking member 22 relative to the slack eliminating roller 21.

  The flyer 38 is configured to rotate integrally with the flyer shaft 33. The flyer 38 is configured to be appropriately curved toward the outer peripheral surface 21 a of the slack eliminating roller 21. Accordingly, the flyer 38 can engage with the spun yarn 10 (hook the spun yarn 10) and guide the spun yarn 10 to the outer peripheral surface of the slack eliminating roller 21.

  With the above configuration, the yarn slack eliminating device 12 hooks the flyer 38 onto the spun yarn 10 and winds the spun yarn 10 around the slack eliminating roller 21, thereby eliminating the slack of the spun yarn 10 and increasing the winding tension. Can be adjusted. Specifically, it is as follows.

  As described above, the yarn hooking member 22 can be rotated independently of the slack eliminating roller 21, and a resistance torque in a direction against the rotation is applied by magnetic means. The slack eliminating roller 21 is rotated at a predetermined rotational speed by the electric motor 25. In this configuration, when the flyer 38 is engaged with the spun yarn 10, if the tension applied to the yarn is strong enough to overcome the resistance torque, the yarn hooking member 22 rotates independently of the slack eliminating roller 21, The yarn is unwound from the slack eliminating roller 21. On the contrary, if the tension applied to the yarn is weak, the yarn hooking member 22 rotates integrally with the slack eliminating roller 21 and winds the yarn around the slack eliminating roller 21. The spun yarn 10 is wound from the proximal end side of the slack eliminating roller 21, while the yarn is unwound from the distal end side of the slack eliminating roller 21.

  In this way, the yarn slack eliminating device 12 operates so as to wind the yarn when the yarn tension is lowered (the yarn is about to loosen) and to release the yarn when the yarn tension is increased. It is possible to solve the problem and to apply an appropriate tension. Further, as described above, the yarn hooking member 22 works so as to absorb the fluctuation of the tension applied to the spun yarn 10 between the yarn slack eliminating device 12 and the winding device 13, so that the fluctuation of the tension is caused by the spinning device 9. Can be prevented from affecting the spun yarn 10 between the yarn slack eliminating device 12 and the yarn slack eliminating device 12. Thereby, the spun yarn 10 can be pulled out from the spinning device 9 by the yarn slack eliminating device 12 at a more stable speed.

  By the way, in order to stably convey the spun yarn 10 by the slack eliminating roller 21 (drawn from the spinning device 9), it is necessary to always maintain a state where the spun yarn 10 is wound around the slack eliminating roller 21 by a certain amount. There is. For this reason, in this embodiment, the cradle arm 71 is feedback-controlled by a signal from the yarn storage amount sensor 27. Specifically, it is as follows.

  First, the tension applied to the yarn (spun yarn 10 between the yarn slack eliminating device 12 and the winding device 13) hung on the yarn hooking member 22 is basically the yarn feed speed (spinning by the slack eliminating roller 21). The spinning speed from the apparatus 9) and the winding speed of the winding apparatus 13. That is, if the winding speed is faster than the yarn feeding speed, the tension applied to the yarn increases, and the yarn is gradually unwound from the slack eliminating roller 21. On the contrary, if the winding speed is slower than the yarn feeding speed, the tension applied to the yarn becomes small, and the yarn is gradually wound around the slack eliminating roller 21. Since the rotation speed (spinning speed) of the slack eliminating roller 21 is normally constant, the tension applied to the yarn hooked on the yarn hooking member 22 mainly changes depending on the winding speed of the winding device 13.

  During normal winding, in order to give an appropriate winding tension to the spun yarn 10, the winding speed is slightly higher than the yarn feeding speed (spinning speed of the spinning device 9) by the slack eliminating roller 21. The rotational speed of the winding drum 72 is set. Accordingly, the spun yarn 10 wound around the slack eliminating roller 21 is gradually unwound and the yarn storage amount is reduced.

  When it is detected by the yarn storage amount sensor 27 that the yarn storage amount has become a predetermined value or less (for example, the number of spun yarns 10 wound around the outer periphery of the slack eliminating roller 21 has become 10 or less), the spinning is performed. The unit controller of the unit 2 controls the cradle arm 71 to rotate to the left in FIG. 2 by driving a lift cylinder (not shown), and separates the package 45 from the winding drum 72. As a result, the package 45 loses the driving force, so that the inertial rotation is continued, but the winding speed gradually decreases.

  As a result, the spun yarn 10 is gradually wound up by the yarn hooking member 22, and the yarn storage amount of the slack eliminating roller 21 is recovered. However, when a yarn exceeding the amount that can be stored in the cylindrical portion 21c is wound around the slack eliminating roller 21, the position where the spun yarn 10 is wound around the slack eliminating roller 21 climbs the proximal end taper portion 21b and is wound on the large diameter side. Therefore, the spun yarn 10 cannot be pulled out from the spinning device 9 at an accurate speed. Therefore, the yarn storage amount sensor 27 detects that the amount of storage of the spun yarn 10 has reached a predetermined value or more. When it is detected that the storage amount of the spun yarn 10 has reached a predetermined value or more, the unit controller rotates the cradle arm 71 to the right in FIG. 2 and brings the package 45 into contact with the winding drum 72. As a result, the winding speed is recovered, and the spun yarn 10 is unwound from the slack eliminating roller 21 as described above.

  Thus, the winding speed of the winding device 13 can be adjusted by swinging the cradle arm 71 by the lift cylinder and bringing the package 45 into contact with or away from the winding drum 72. Then, by controlling the winding speed of the winding device 13 while detecting and feeding back the yarn storage amount of the slack eliminating roller 21, a state in which a predetermined amount or more of the spun yarn 10 is stored in the slack eliminating roller 21 is always maintained. Can be maintained.

  As described above, the spinning machine 1 of this embodiment includes the spinning device 9, the winding device 13, and the yarn slack eliminating device 12. The spinning device 9 generates a spun yarn 10 by twisting the fiber bundle 8. The winding device 13 winds the spun yarn 10 sent from the spinning device 9 to form a package 45. The yarn slack eliminating device 12 is disposed between the spinning device 9 and the winding device 13, and the spun yarn 10 is wound around the outer periphery of the rotating slack eliminating roller 21 and temporarily stored. The spinning machine 1 draws the spun yarn 10 from the spinning device 9 while applying tension by the yarn slack eliminating device 12.

  That is, since tension is applied to the spun yarn 10 (more specifically, the fiber bundle 8 to which twist is applied) by the slack eliminating roller 21 in which the spun yarn 10 is wound around the outer periphery, for example, spinning is performed between two opposing rollers. Compared to the conventional configuration in which the yarn is nipped and conveyed, the contact area between the slack eliminating roller 21 as the yarn conveying member and the spun yarn 10 is large, and tension is applied to the spun yarn 10 with sufficient conveying force. be able to. Accordingly, the spun yarn 10 can be pulled out from the spinning device 9 at a stable speed without causing a slip or the like between the slack eliminating roller 21 and the spun yarn 10. Therefore, the spun yarn 10 having a uniform quality can be produced. Can do.

  Further, in the spinning machine 1 of the present embodiment, the spun yarn 10 delivered from the spinning device 9 is directly introduced into the yarn slack eliminating device 12 without passing through another yarn conveying member.

  Thereby, tension can be given to the spun yarn 10 delivered from the spinning device 9 by the yarn slack eliminating device 12 without being influenced by other yarn conveying members. Further, the maintenance performance is avoided by avoiding problems such as winding of the fluff around the other yarn conveying member that occurs when another yarn conveying member exists between the spinning device 9 and the yarn slack eliminating device 12. In addition to the improvement, the number of parts can be reduced, the entire spinning machine 1 can be simplified, and the cost can be reduced.

  Further, in the spinning machine 1 of the present embodiment, the slack eliminating roller 21 is made of a wear resistant material.

  As a result, the durability is improved as compared with the rubber roller, so that the number of consumable parts can be reduced as compared with the conventional configuration, and stable yarn quality can be maintained over a long period of time. Further, since the change in performance due to wear can be suppressed, for example, compared to the conventional configuration in which spun yarn is conveyed by a rubber roller, the yarn conveying force between a plurality of spinning units 2 provided in the spinning machine 1 The yarn quality produced by the plurality of spinning units 2 can be kept uniform among the spinning units 2.

  In the spinning machine 1 of the present embodiment, the yarn slack eliminating device 12 is configured to absorb fluctuations in yarn tension between the yarn slack eliminating device 12 and the winding device 13.

  As a result, fluctuations in yarn tension between the yarn slack eliminating device 12 and the winding device 13 can be prevented from affecting the yarn tension between the yarn slack eliminating device 12 and the spinning device 9. The quality can be further improved. Further, since the yarn slack eliminating device 12 has both functions of conveying the spun yarn 10 and adjusting the yarn tension, the yarn conveying member and the tension adjusting member are provided separately. Compared to the conventional configuration, the number of parts can be reduced and the cost can be reduced.

  Further, in the spinning machine 1 of this embodiment, the spun yarn 10 can be wound around the outer periphery of the slack eliminating roller 21 at least 10 times without overlapping.

  That is, the spun yarn 10 having a sufficient length is wound around the outer periphery of the slack eliminating roller 21 so that the slack eliminating roller 21 is tightened. The conveying force of the spun yarn 10 by rotation can be sufficiently stabilized.

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

  The method of applying torque between the yarn hooking member 22 and the slack eliminating roller 21 is not limited to the magnetic means as described above, and may be, for example, frictional force or electromagnetic means.

  Further, the yarn hooking member 22 is not essential, and may be a yarn slack eliminating device having a configuration that does not have a yarn hooking member that can rotate relative to the slack eliminating roller, as in Patent Document 1, for example. Even with this configuration, the yarn can be pulled at a stable speed by winding the yarn around the rotating slack eliminating roller. However, in the configuration including the yarn hooking member 22 as in the above embodiment, the yarn tension adjustment is realized by the yarn hooking member 22, so that it is not necessary to provide a separate yarn tension adjusting device, and the yarn of the slack eliminating roller There is no need for a complicated configuration for increasing or decreasing the amount of storage. Therefore, in view of compactness and the like, the yarn slack eliminating device 12 including the yarn hooking member 22 as in the above embodiment is preferably used.

  The layout of the spinning unit 2 is not limited to the layout of the above embodiment, as long as the yarn slack eliminating device 12 substantially applies tension to the spun yarn 10 delivered from the spinning device 9. For example, a configuration in which another yarn guide member that does not participate in yarn tension (for example, a simple rolling roller that does not nip the yarn) may be provided between the spinning device 9 and the yarn slack eliminating device 12 may be used. .

  The above-described configuration of the spinning machine 1 is an example. For example, the yarn splicing cart 3 may be omitted, and for example, an automatic doffing cart for automatically exchanging the full package may be further provided.

1 is a front view of a spinning machine according to an embodiment of the present invention. The longitudinal cross-sectional view of a spinning machine. The longitudinal cross-sectional view of a thread slack removal apparatus.

Explanation of symbols

1 Spinning machine (spinning machine)
2 Spinning unit 8 Fiber bundle 9 Spinning device 10 Spinning yarn 12 Yarn slack removal device (yarn storage device)
13 Winding device 21 Slack removal roller (yarn storage roller)

Claims (4)

A spinning device for producing a spun yarn by twisting the fiber bundle;
A winding device for winding the spun yarn sent from the spinning device to form a package;
A yarn storage device that is disposed between the spinning device and the winding device, and that temporarily stores the wound yarn by winding the spun yarn around an outer periphery of a rotating yarn storage roller;
With
A spinning machine that pulls out spun yarn from the spinning device while applying tension by the yarn accumulating device. The spinning machine according to claim 1,
The spinning machine, wherein the spun yarn delivered from the spinning device is directly introduced into the yarn accumulating device without passing through another yarn conveying member. The spinning machine according to claim 1 or 2,
The spinning machine, wherein the yarn accumulating device is a yarn slack eliminating device configured to absorb variation in yarn tension between the yarn accumulating device and the winding device. The spinning machine according to any one of claims 1 to 3,
The spinning machine, wherein the spun yarn can be wound around the outer periphery of the yarn accumulating roller at least 10 times without overlapping.

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