JP2012020837A - Fluff binding device, tension applying unit, and automatic winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluff binding device that effectively suppresses fluff by a simple constitution and responds to the high-speed winding of an automatic winder.SOLUTION: The fluff binding device 16 includes a fluff binding roller 45, and a yarn guide mechanism. The fluff binding roller 45 is arranged so that an axial line is oblique with respect to a yarn traveling path and so as to be rotatable with the axial line as a center. The yarn guide mechanism brings a spun yarn 20 into contact with one part of an outer peripheral surface of the fluff binding roller 45.

Description

  The present invention mainly relates to a configuration of a fluff binding device included in an automatic winder.

  The spun yarn produced by ring spinning or the like is wound around a yarn feeding bobbin and conveyed to an automatic winder. The automatic winder removes defects in the spun yarn and winds a plurality of yarn feeding bobbins into a cone or cheese-like package. Here, the spun yarn is a yarn in which short fibers are arranged in parallel and bundled and twisted to give a certain thickness and length. Since spun yarn is composed of relatively short fibers, fluff tends to occur more easily than filament yarns composed of continuous long fibers.

  The rewinding process by the automatic winder is a process in which the spun yarn is unwound from the yarn supplying bobbin while the spun yarn is unwound to the package by guiding the spun yarn with a large number of yarn guides. Accordingly, there is a tendency that the spun yarn is subjected to friction every time it passes through the tension applying device and the yarn guide, and fluff existing in the spun yarn increases.

  Therefore, in the rewinding process by the conventional automatic winder, a fluff binding device is provided in the traveling path of the spun yarn to suppress the occurrence of fluff. This fluff binding device injects a gas such as compressed air into the yarn passage through which the spun yarn passes to cause a swirling flow, and causes the spun yarn to be ballooned so that the fluff is entangled into the fiber or wound. Fluffing treatment is performed by shaking off unnecessary fibers that do not contribute. This type of fluff binding device is described in Patent Document 1, for example.

  Further, as another type of fluff binding device, a plurality of friction disks are provided, and by spinning the disks, false spinning is performed on the spun yarn traveling at the working position, and the fluff protruding from the surface of the spun yarn is used as the spun yarn. There is also known a multi-disk type that performs fluffing treatment by being wound on the fibers constituting the. This type of fluff binding device is described in Patent Document 2, for example.

  However, the fluffing apparatus as described above has a complicated mechanism because fluffing is performed by compressed air or a driving member. Further, in order to control the amount of fluffing, the amount of compressed air and the driving amount of the driving member have to be adjusted.

  On the other hand, as for the spinning machine, Patent Document 3 describes a fluff suppressing device including a roller for winding a yarn in a spiral shape. In Patent Document 3, the yarn is rolled while sliding on the circumferential surface of the rotating roller, so that the fluff fibers that are loose on the surface of the yarn are wound around the yarn itself. You can get. The configuration of Patent Document 3 is a simple configuration having only one roller, and does not require a complicated mechanism as in Patent Document 1 and Patent Document 2.

JP 2001-139231 A JP 2002-348042 A Japanese Utility Model Publication No. 6-83774

  By the way, in the configuration of Patent Document 3, since the yarn is spirally wound around the roller surface, if the yarn is pulled in the pulling direction from the roller, the yarn tightens the roller. As a result, the yarn slips on the roller surface. It becomes difficult. Here, when it is assumed that the yarn does not slip on the roller surface, if the traveling speed of the yarn suddenly fluctuates on the downstream side of the roller, there is a high possibility that the yarn will be stretched out.

  In this respect, since the spinning machine has a relatively low winding speed, the traveling speed of the yarn hardly changes, and even the configuration of Patent Document 3 is sufficiently practical. However, in the case of an automatic winder, since the yarn traveling speed (yarn winding speed) is faster than that of the spinning machine, the fluctuation range of the traveling speed is large. Moreover, in the automatic winder, the yarn traveling speed may fluctuate rapidly as a result of disturb control or the like for preventing ribbon winding. Therefore, it is considered that the fluff suppressing device described in Patent Document 3 cannot cope with fluctuations in yarn traveling speed in the automatic winder as described above, and yarn breakage frequently occurs.

  The present invention has been made in view of the above circumstances, and its main object is to effectively suppress fluff with a simple configuration and to cope with high-speed winding of an automatic winder. 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 a first aspect of the present invention, there is provided a fluff binding device that suppresses the occurrence of fluff of traveling spun yarn, and has the following configuration. That is, the fluff binding device includes a fluff binding roller and a yarn guide mechanism. The fluff binding roller is disposed so that the axis thereof is inclined with respect to the yarn traveling path, and is provided to be rotatable about the axis. The yarn guide mechanism brings the spun yarn into contact with a part of the outer peripheral surface of the fluff binding roller.

  With this configuration, the spun yarn runs while sliding on the surface of the fluffing roller, and the yarn is twisted by the rotating fluffing roller. By this twisting action and rubbing action at the time of sliding, the fluff fibers released on the surface of the spun yarn can be wound around the spun yarn itself and the fluff can be suppressed. In this way, the effect of fluffing can be realized with a simple configuration including one roller. In addition, since the spun yarn is not wound around the fluffing roller and only the spun yarn is brought into contact with a part of the outer peripheral surface of the fluffing roller, if the winding speed of the spun yarn greatly fluctuates, spinning is performed on the outer peripheral surface of the fluffing roller. Yarn can be slid and yarn breakage can be prevented.

  In the above-described fluff binding device, it is preferable that the fluff binding roller is cantilevered at an end portion on the downstream side in the running direction of the spun yarn.

  That is, in the fluff binding device of the present invention, the yarn travels while sliding on the surface of the fluff binding roller disposed obliquely with respect to the traveling path of the spun yarn. It flows toward the end on the upstream side of the path. Therefore, if it is configured to support the end portion on the upstream side of the yarn travel path of the fluff binding roller, there is a problem that the spun yarn is easily entangled with the support shaft. In this regard, by configuring as described above, the spun yarn can be prevented from being entangled with the support shaft of the fluff binding roller.

  The fluff binding device preferably has a switching mechanism capable of switching the inclination of the axis of the fluff binding roller.

  As a result, the inclination of the roller can be changed according to the twist direction of the spun yarn. Therefore, even if the twist direction of the spun yarn is either the Z twist or the S twist, the roller is additionally provided upstream from the fluff binding roller. It can be twisted to wind down the fluff.

  The fluff binding apparatus is preferably configured as follows. That is, the yarn guide mechanism is provided so as to be movable in a direction crossing the yarn traveling path. Then, the yarn guide mechanism changes the contact length of the spun yarn that contacts the outer peripheral surface of the fluff binding roller by bending the spun yarn traveling on the yarn travel path.

  Thus, the fluffing effect can be adjusted by changing the contact length of the spun yarn with respect to the fluffing roller.

  In the above-described fluffing device, it is preferable that a groove is formed on the surface of the fluffing roller along a direction substantially perpendicular to the axis of the fluffing roller.

  Thus, by forming a groove on the surface of the fluffing roller, a greater fluffing effect can be obtained as compared with the case where the surface is smoothed.

  In the above-described fluffing device, the surface material of the fluffing roller is preferably rubber.

  Thus, since the roller surface is made of rubber, an appropriate friction can be generated between the spun yarn and the roller surface, so that a large fluffing effect can be exhibited.

  In the fluffing apparatus, the surface of the fluffing roller is preferably made of nitrile rubber.

  That is, nitrile rubber is particularly suitable as a material for fluffing rollers because it is excellent in wear resistance and aging resistance and is resistant to tearing.

  In the fluffing apparatus, the surface of the fluffing roller may be made of urethane.

  As described above, when the fluffing roller is made of urethane, a larger fluffing effect can be obtained as compared with a case where the fluffing roller is made of metal such as aluminum.

  The fluff binding device is preferably configured as follows. That is, the yarn guide mechanism includes an upstream guide member, a downstream guide member, and a yarn guide moving unit. The upstream guide member guides the spun yarn upstream in the yarn running direction as viewed from the fluff binding roller to the surface of the fluff binding roller via an upstream yarn guide point. The downstream guide guides the spun yarn contacting the surface of the fluffing roller further downstream from the fluffing roller via a downstream yarn guide point. The yarn guide moving unit is configured so that an imaginary line connecting the upstream yarn guide point and the downstream yarn guide point approaches or separates from the axis of the fluff binding roller. It is possible to move the downstream guide member.

  With this configuration, the amount of pressing the spun yarn against the fluffing roller can be adjusted as appropriate, so that the fluffing device can function as a kind of tension adjusting device.

  According to the 2nd viewpoint of this invention, the tension | tensile_strength provision unit of the following structures is provided. That is, the tension applying unit includes the fluff binding device, a gate tension applying device that adjusts the distance between the movable comb tooth portion and the fixed comb tooth portion, and adjusts the tension of the traveling spun yarn. And a bracket. Among the comb teeth of the movable comb tooth portion, at least one comb tooth is located on the fluffing roller side with respect to the comb teeth of the fixed comb tooth portion. Thereby, the said movable comb-tooth part serves as the said upstream guide member of the said fluff binding apparatus. The downstream guide member is configured integrally with the movable comb tooth portion. The fluff binding device and the gate tension applying device are attached to the bracket.

  With this configuration, the upstream guide (movable comb tooth portion) and the downstream guide move according to the unwinding tension of the spun yarn, so that the spun yarn is pressed against the fluff binding roller. Can be adjusted according to the unwinding tension of the spun yarn. Further, as described above, the fluff binding device functions as a kind of tension adjusting device. Therefore, as a result that the fluff binding device can take part of the function of the conventional gate tension applying device, the gate tension applying device can be reduced in size. Furthermore, by fixing the fluff binding device and the gate type tension applying device to the bracket, the fluff binding device and the gate type tension applying device can be handled as a unit (tension applying unit).

  According to the third aspect of the present invention, the fluff binding apparatus, the yarn feeding bobbin support part for supporting the yarn feeding bobbin, and the wound bobbin wind up the spun yarn of the yarn feeding bobbin to form a package. An automatic winder including a winding unit is provided.

  Since this automatic winder includes a fluff binding device that can suppress fluff with a simple configuration, a high-quality package can be formed at low cost.

  According to a fourth aspect of the present invention, a package is formed by winding the spun yarn of the yarn supplying bobbin around the tension applying unit, a yarn supplying bobbin supporting portion that supports the yarn supplying bobbin, and a winding bobbin. And an automatic winder configured to be detachable from the tension applying unit.

  Since this automatic winder includes a fluff binding device that can suppress fluff with a simple configuration, a high-quality package can be formed at low cost. Moreover, since this automatic winder can remove a tension | tensile_strength provision unit, it is excellent in maintainability.

  The automatic winder is preferably configured as follows. That is, the automatic winder includes a yarn joining device and a control unit. The yarn joining device joins the yarn end on the yarn supplying bobbin side and the yarn end on the winding bobbin side. The control unit opens the yarn guide mechanism when the yarn joining device performs the yarn joining operation, and when the yarn joining operation is completed and the winding unit resumes the winding operation, the yarn joining mechanism is released. The guide mechanism is moved to bring the spun yarn into contact with the outer peripheral surface of the fluffing roller.

  That is, the yarn can be easily introduced into the fluffing device by guiding the yarn to the yarn joining device with the yarn guide mechanism opened. Thus, fluffing can be easily performed by opening and closing the yarn guide mechanism during the yarn splicing operation of the automatic winder.

The schematic front view of the winder unit with which the automatic winder which concerns on one Embodiment of this invention is provided. The schematic side view of a winder unit. The front view which shows the state which removed the tension | tensile_strength provision unit. (A) The side view which shows the structure of a fluff binding apparatus. (B) The front view which shows the structure of a fluff binding apparatus. The side view which shows the structure of the fluff binding apparatus which concerns on a modification. The figure which shows a mode that the fluff binding roller was seen in the axial direction. (A) The figure which shows a mode that the comb-tooth engaged deeply. (B) The figure which shows a mode when the mesh of a comb tooth becomes shallow. The graph which shows the effect of the fluff binding device of this embodiment. The graph which shows the fluffing effect of the fluffing roller according to material. Sectional drawing which shows the structure of the fluff binding roller whose surface is rubber. The top view of the fluff binding roller which formed the groove | channel on the surface.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG.1 and FIG.2 is the schematic of the winder unit 10 with which the automatic winder as a yarn winding machine which concerns on one Embodiment of this invention is provided. The automatic winder of this embodiment includes a plurality of winder units 10 arranged side by side and a machine base control device (not shown).

  Each winder unit 10 includes a bobbin support part 31, a winding part 32, a unwinding assisting device 12, a tension applying device 13, a fluff binding device 16, a splicer device 14, a yarn quality measuring device 15, It has. Further, the winder unit includes a unit main body 11, and each of the above components (winding unit 32, unwinding assisting device 12, tension applying device 13, fluffing device 16, splicer device 14, yarn quality measuring device 15, etc.) Is attached to the side surface of the unit main body 11.

  The bobbin support portion 31 is configured to hold the yarn supplying bobbin 21 wound with the spun yarn manufactured in the spinning process in a substantially upright state.

  The winding unit 32 is configured to wind the spun yarn 20 unwound from the yarn supplying bobbin 21 around the winding bobbin 22 while traversing to form a package 30 having a predetermined length and a predetermined shape. A drum 24 and a cradle 23 are provided.

  The winding drum 24 is arranged so as to face the winding bobbin 22. Further, a spiral traverse groove 27 is formed on the outer peripheral surface of the winding drum 24, and the spun yarn 20 is traversed by the traverse groove 27. The outer peripheral surface of the winding bobbin 22 (or the package 30 in which the yarn layer is formed on the outer periphery of the winding bobbin 22) is in contact with the outer peripheral surface of the winding drum 24, and the winding drum 24 is driven to rotate. As a result, the winding bobbin 22 is driven to rotate. The take-up drum 24 is connected to an output shaft of a drum drive motor 53, and the operation of the drum drive motor 53 is controlled by a motor control unit (not shown).

  The motor control unit appropriately controls the drum drive motor 53 to rotate the winding drum 24 at a predetermined rotational speed, thereby winding the spun yarn 20 unwound from the yarn supplying bobbin 21 at an appropriate speed. It is comprised so that it may wind up to 22. The motor control unit is configured to perform disturb control for preventing ribbon winding. In this disturbance control, the rotation of the winding drum 24 is rapidly increased or decreased near the ribbon winding generation diameter to cause slip between the package 30 and the winding drum 24, and the yarn path of the spun yarn 20 traversed is traversed. This is a control to disperse and wind up. As a result, the ribbon winding can be broken and the package 30 having excellent unwinding properties can be formed.

  The cradle 23 is configured to grip the take-up bobbin 22 in a rotatable manner. Further, the cradle 23 is configured to be rotatable in a direction approaching or separating from the take-up drum 24 around a rotation shaft (support shaft) (not shown). By rotating the cradle 23 in this manner, an increase in the diameter of the package 30 due to winding of the spun yarn 20 around the winding bobbin 22 can be absorbed. Thereby, even if the package 30 is rolled up and the yarn layer diameter is increased, the spun yarn 20 can be wound in a state where the surface of the package 30 is always in proper contact with the winding drum 24.

  The winder unit 10 according to the present embodiment includes, in the yarn traveling path between the yarn feeding bobbin 21 and the winding bobbin 22, the unwinding assisting device 12, the tension applying device 13, and the fluff binding device 16 in order from the upstream side. The splicer device 14 and the yarn quality measuring device 15 are arranged. In this specification, “upstream side” and “downstream side” refer to the upstream side and the downstream side when viewed in the traveling direction of the spun yarn 20.

  The unwinding assisting device 12 lowers the yarn from the yarn supplying bobbin 21 by lowering the regulating member 40 covering the core pipe of the yarn supplying bobbin 21 in conjunction with the yarn unwinding from the yarn supplying bobbin 21. It is to assist. The regulating member 40 comes into contact with the balloon formed on the upper portion of the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn unwound from the yarn feeding bobbin 21, and the yarn is controlled by controlling the balloon to an appropriate size. Assist with unraveling.

  The tension applying device 13 applies a predetermined tension to the traveling spun yarn 20. The tension applying device 13 is configured as a gate type device in which movable comb teeth (movable comb teeth 42) are arranged with respect to fixed comb teeth (fixed comb teeth 41). As shown in FIG. 1, the fixed comb teeth 41 and the movable comb teeth 42 are configured to be in a meshed state with a predetermined gap therebetween. The spun yarn 20 unwound from the yarn feeding bobbin 21 is bent between the meshed comb teeth 41 and 42 and travels. As a result, a predetermined tension can be applied to the spun yarn 20 wound around the package 30 by the winding unit 32, and the quality of the package 30 can be improved.

  In addition, the movable comb teeth 42 are configured to be movable so as to approach or separate from the fixed comb teeth 41, and the depth of engagement between the fixed comb teeth 41 and the movable comb teeth 42 can be changed. It is like that. Here, as the meshing between the fixed comb teeth 41 and the movable comb teeth 42 becomes deeper, the traveling spun yarn 20 is bent more greatly, so that the tension applied to the spun yarn 20 can be increased. That is, by making it possible to change the depth of engagement between the fixed comb teeth 41 and the movable comb teeth 42 as described above, an appropriate tension according to the situation can be applied to the spun yarn 20.

  As shown in FIG. 1 and the like, the movable comb tooth 42 is fixed to the tip of the comb tooth drive arm 43. The comb driving arm 43 is configured to be rotatable, and the movable comb 42 can be moved as described above by rotating the comb driving arm 43. As shown in FIG. 2, the tension applying device 13 includes a rotary solenoid 44. The comb drive arm 43 is connected to the rotary solenoid 44 via a link mechanism or the like. The winder unit 10 also includes a control unit (not shown) that controls the operation of the rotary solenoid 44. With this configuration, the control unit can move the movable comb teeth 42 in a direction approaching or separating from the fixed comb teeth 41 by controlling the operation of the rotary solenoid 44. During normal winding, the rotary solenoid 44 applies a force in a direction approaching the fixed comb teeth 41 to the movable comb teeth 42. Thereby, both the comb teeth 41 and 42 can be kept in a meshed state.

  By the way, when the unwinding tension is increased at the lower end of the winding bobbin 22, the force for the yarn to become a straight state (a state in which the yarn is stretched) becomes strong. As a result, the yarn that travels by bending between the comb teeth 41 and 42 tries to return to a linear state. As a result, a force that pushes away the comb teeth 41 and 42 acts, and the movable comb teeth 42 act as the rotary solenoid 44. Move against the power of. Accordingly, when the tension of the spun yarn 20 is increased, a phenomenon occurs in which the meshing of the comb teeth 41 and 42 becomes shallow. That is, when the unwinding tension of the spun yarn 20 is low, the comb teeth 41 and 42 are in a state of being deeply engaged by the force of the rotary solenoid 44, but as the unwinding tension of the spun yarn 20 increases, the spun yarn 20 Pushes away the movable comb teeth 42 so that the meshing of the comb teeth 41 and 42 becomes shallow.

  As described above, in the gate type tension applying device 13, the engagement depth of the comb teeth 41 and 42 changes according to the unwinding tension of the yarn, and as a result, the tension applied to the spun yarn 20 is automatically adjusted. The That is, a stable tension can be applied to the spun yarn 20 from the upper end to the lower end of the spun yarn 20, and stable fluffing (described later) can be performed.

  A fluff binding device 16 is disposed immediately downstream of the tension applying device 13. The fluff binding device 16 includes a columnar fluff binding roller 45 that is rotatably supported, and suppresses fluff of the spun yarn 20 by running while the spun yarn 20 is in contact with the fuzz lowering roller 45. It is configured to be able to. The detailed configuration of the fluff binding device 16 will be described later.

  The tension applying device 13 and the fluff binding device 16 are fixed to a bracket 29 so that they can be handled as one unit (tension applying unit 28). As shown in FIG. 3, the tension applying unit is configured so that it can be easily detached from the unit main body 11 by an appropriate removing operation. Thereby, the maintainability of the tension | tensile_strength provision unit 28 and the unit main-body part 11 can be improved.

  The yarn quality measuring device 15 is configured to detect a yarn defect by monitoring the thickness of the traveling spun yarn 20. Further, a cutter (not shown) for cutting the spun yarn 20 immediately when the yarn quality measuring device 15 detects a yarn defect is attached near the yarn quality measuring device 15.

  The splicer device 14 includes a lower thread on the yarn supplying bobbin 21 and a package when the yarn quality measuring device 15 detects a yarn defect and cuts the yarn, or when the yarn breaks during unwinding from the yarn supplying bobbin 21. The upper thread on the 30 side is spliced. As the yarn joining device for joining the upper yarn and the lower yarn in this manner, a mechanical device, a device using a fluid such as compressed air, or the like can be used.

  On the lower side and the upper side of the splicer device 14, the lower yarn guide pipe 25 that catches the lower yarn on the yarn feeding bobbin 21 and guides it to the splicer device 14, and the upper yarn on the package 30 side is caught. And an upper thread guide pipe 26 for guiding the upper thread. Further, the lower thread guide pipe 25 and the upper thread guide pipe 26 are configured to be rotatable about shafts 33 and 35, respectively. A suction port 36 is formed at the tip of the lower thread guide pipe 25, and a suction mouth 34 is provided at the tip of the upper thread guide pipe 26. Appropriate negative pressure sources are connected to the lower thread guide pipe 25 and the upper thread guide pipe 26, respectively, and a suction flow is generated in the suction port 36 and the suction mouth 34 so that the thread ends of the upper thread and the lower thread are moved. It is comprised so that aspiration capture | acquisition can be carried out.

  Next, the fluff binding device 16 will be described in detail with reference to FIG. The fluff binding device 16 includes a fluff binding roller 45 and a yarn guide mechanism. In FIG. 4, in order to illustrate the twisting direction of the spun yarn 20, the thickness of the spun yarn 20 is drawn with more emphasis than the actual thickness.

  The yarn guide mechanism includes an upstream guide (upstream guide member) 48, a downstream guide (downstream guide member) 47, and a yarn guide moving unit. As will be described later, in the present embodiment, the rotary solenoid 44 described above also serves as a yarn guide moving unit.

  An upstream guide 48 that guides the upstream spun yarn 20 and guides it to the fluff binding roller 45 is disposed on the upstream side of the fluff binding roller 45. On the other hand, a downstream guide 47 for guiding the spun yarn 20 traveling further downstream from the fluffing roller 45 is disposed on the downstream side of the fluffing roller 45. A point where the spun yarn 20 and the upstream guide 48 contact each other is an upstream guide point, and a point where the spun yarn 20 and the downstream guide 47 contact each other is a downstream guide point. That is, the spun yarn 20 is guided to the fluff binding roller through the upstream guide point, and further guided downstream from the fluff binding roller through the downstream guide point.

  In the present embodiment, the tension applying device 13 is disposed on the upstream side of the fluff binding roller 45, and as shown in FIG. 1, the spun yarn 20 is guided by the most downstream comb teeth while the tension is applied. It is pulled out from the applying device 13 to the fluff binding roller 45 side. The most downstream comb tooth is one of the comb teeth constituting the movable comb tooth 42. That is, in this embodiment, it can be said that the most downstream tooth of the movable comb teeth 42 also functions as the upstream guide 48 of the fluff binding device 16.

  On the other hand, as shown in the side view of FIG. 4A, the fluff binding roller 45 is arranged with its axis inclined at 45 degrees with respect to the yarn travel path (more precisely, the upstream guide point). And when viewed from a direction perpendicular to the imaginary line connecting the downstream guide point and the axis, the axis is arranged to be inclined by 45 degrees with respect to the imaginary line). In the following description, of the two ends of the fluffing roller disposed obliquely, the end closer to the winding bobbin 22 is the downstream end 45a, and the end closer to the yarn feeding bobbin 21 is the upstream. This is called a side end 45b. The fluff binding roller 45 is supported by a roller support member 46 so as to be rotatable about its axis. The roller support member 46 is fixed to the bracket 29.

  And the fluff binding roller 45 is arrange | positioned so that it may interfere with the virtual line which connects an upstream guide point and a downstream guide point, as shown in FIG.4 (b). With this configuration, the spun yarn 20 between the upstream guide point and the downstream guide point is in contact with the surface of the fluffing roller 45 while contacting the surface of the fluffing roller 45 as shown in FIG. Travel along a curved path.

  By the way, as described above, the spun yarn 20 between the upstream guide point and the downstream guide point travels along a curved path along the surface of the fluff binding roller 45, and tension is applied to the spun yarn 20. Since a predetermined tension is applied by the device 13, a force is exerted to return to a linear state (a state in which the yarn is stretched). Therefore, the spun yarn 20 travels while being pressed against the surface of the fluff binding roller 45. As a result, a frictional force is generated between the spun yarn 20 and the surface of the fluffing roller 45, and the fluffing roller 45 that is instructed to rotate freely receives the force from the traveling spun yarn 20 and rotates around the axis. It will be driven and rotated. The running direction of the spun yarn 20 and the rotational direction of the fluffing roller 45 are indicated by thick arrows in FIG.

  Here, if the fluffing roller 45 is arranged so that the axis of the 45 is perpendicular to the traveling path of the yarn, the spun yarn 20 is in contact with the spun yarn 20 and the surface of the fluffing roller 45. The traveling direction coincides with the direction in which the surface of the rotating fluff binding roller 45 moves. Therefore, in this case, the spun yarn 20 can travel without slipping while being pressed against the surface of the driven fluffing roller 45 (actually, no slip can occur at all, but here it is simple. Ignore it).

  However, in this embodiment, since the axis of the fluff binding roller 45 is disposed obliquely with respect to the yarn travel path, the spun yarn 20 is in contact with the surface of the spun yarn 20 and the fluff binding roller 45. The traveling direction and the direction in which the surface of the rotating fluff binding roller 45 moves do not match. More specifically, when viewed in a direction orthogonal to the yarn travel path and the axial direction of the fluff binding roller 45 (the state of FIG. 4A), the yarn travel direction and the fluff binding roller 45 Deviation occurs in the direction in which the surface of the plate moves. Accordingly, the spun yarn 20 travels while sliding on the surface of the fluff binding roller 45.

  By this sliding action, the loose fluff fiber can be wound around the spun yarn 20 itself, and the fluff of the spun yarn 20 can be reduced.

  Further, since the surface of the fluffing roller 45 moves obliquely as described above, the spun yarn 20 that is running while being pressed against the surface is directed obliquely (upper left in the case of FIG. 4A). Receive the power of being washed away. However, since the position of the spun yarn 20 is regulated by the upstream guide 48 and the downstream guide 47, the spun yarn 20 rolls on the surface of the fluff binding roller 45 without being flowed over a certain distance. As a result, as shown in FIG. 4A, the spun yarn 20 is twisted in a certain direction at the contact portion between the spun yarn 20 and the fluff binding roller 45.

  The direction in which the spun yarn 20 is twisted by the fluff binding roller 45 is determined by the relationship between the traveling direction of the spun yarn 20 and the inclination of the fluff binding roller 45. In the present embodiment, the fluff binding roller 45 is arranged so that twist is applied to a portion of the spun yarn 20 upstream of the fluff binding roller 45. For example, the example of FIG. 4 shows a state where twist is added to the spun yarn 20 when the spun yarn 20 is Z-twisted. That is, as shown in FIG. 4A, the spun yarn 20 is viewed from a direction perpendicular to the running direction of the spun yarn 20 and the axis of the fluff binding roller 45 and from the position closer to the front side than the fluff curling roller 45. Sometimes, the fluffing roller 45 is arranged so that the direction of inclination of the spun yarn 20 where the spiral of the fiber is visible matches the direction of inclination of the axis of the fluffing roller 45.

  As described above, since the yarn is twisted in the direction in which the yarn is twisted by the fluff binding roller 45, the spun yarn 20 between the upstream guide 48 and the surface of the fluff binding roller 45 is a yarn that is being twisted. It can be said that there is. On the other hand, the spun yarn 20 separated from the surface of the fluff binding roller 45 loses the twisting force, so that the spun yarn 20 tries to return to the original state by the restoring force of the spun yarn 20. Accordingly, it can be said that the yarn between the surface of the fluff binding roller 45 and the downstream guide 47 is a yarn that is being untwisted. In this way, by temporarily twisting the spun yarn 20, the loose fluff fibers can be wound around the spun yarn itself and the fluff can be reduced.

  However, if the S-twisted spun yarn is run while the fluff binding roller 45 is in the arrangement shown in FIG. 4, the spun yarn is untwisted by the twisting force. Therefore, when the S-twisted spun yarn is caused to travel, the fluff binding roller 45 may be disposed in the reverse direction as shown in FIG. Since the fluff binding device 16 of this embodiment corresponds to both Z twisting and S twisting, it has a switching mechanism that can switch the arrangement of the fluff binding roller 45 between the arrangement of FIG. 4 and the arrangement of FIG. Yes. Although this switching mechanism is not shown in the drawing, it is a mechanism for rotating the fluff binding roller 45 by 180 ° around the yarn path along which the spun yarn 20 travels. With this mechanism, the arrangement of the fluff binding roller 45 can be easily switched according to the twisting direction of the yarn.

  As described above, the fluff binding device 16 of the present embodiment suppresses fluff of the spun yarn 20 with a simple configuration in which only one fluff binding roller 45 is provided and a drive source for the fluff binding roller 45 is not necessary. can do. Further, the fluff binding roller 45 is driven to rotate and does not require energy for rotational driving, so energy saving can be realized.

  Further, as described above, the fluff binding roller 45 is driven and rotated by the traveling spun yarn 20 so that the fluff binding roller 45 rotates at a speed corresponding to the traveling speed of the spun yarn 20. Become. That is, with the simple configuration as described above, stable fluffing can be realized according to the traveling speed of the spun yarn 20.

  When the automatic winder performs the yarn defect removing operation or when the yarn feeding bobbin 21 is replaced, the spun yarn 20 is not temporarily in contact with the surface of the fluff binding roller 45. However, even in this state, the fluff binding roller 45 is continuously rotated by the rotational energy thus far. Even when the automatic winder completes the yarn splicing and resumes the winding operation of the spun yarn 20, the fluff binding roller 45 continues to rotate, so that the rotation speed corresponding to the traveling speed of the spun yarn 20 is reduced. It can be accelerated in time.

  In the present embodiment, as shown in FIG. 4A, the downstream end 45 a of the fluff binding roller 45 is cantilevered by a roller support member 46. This is to prevent the spun yarn 20 from being entangled with the roller support member. That is, as described above, the spun yarn 20 is likely to flow toward the upper left in FIG. 4A. Therefore, when the spun yarn 20 breaks, the yarn end is directed to the left side in FIG. 4A. Easy to fly. Therefore, if the upstream end 45b of the fluffing roller 45 is supported by a roller support member, the roller support member is viewed from the fluffing roller 45 on the left side of FIG. ), The cut yarn end is likely to go toward the roller support member, and as a result, the spun yarn 20 is easily entangled with the roller support member.

  In this regard, when the upstream end 45b of the fluff binding roller 45 is cantilevered by the roller support member 46 as described above, the roller support member 46 is positioned on the side opposite to the direction in which the broken yarn end is easy to fly. Therefore, the spun yarn 20 can be prevented from being entangled with the roller support member 46.

  In this embodiment, as shown in FIG. 4 and the like, the spun yarn 20 is merely brought into contact with the outer peripheral surface of the fluff binding roller 45, and the spun yarn 20 is not wound around the fluff binding roller 45. Specifically, as shown in FIG. 6, when viewed in the axial direction of the fluffing roller 45, the spun yarn 20 is in contact with only about a half circumference of the outer peripheral surface of the fluffing roller 45. Thus, since the spun yarn 20 is not wound around the fluff binding roller 45, the spun yarn 20 can slide to the surface of the fluff binding roller 45 to some extent. Therefore, even if the speed fluctuation due to traverse, a sudden speed change due to disturbance control, etc. occurs, and the spun yarn 20 is momentarily pulled toward the downstream side, the fluff binding roller 45 Since the speed fluctuation can be absorbed by the spun yarn slipping on the top, the yarn can be prevented from being broken.

  Further, if the spun yarn 20 is wound around the fluff binding roller 45 and the yarn breakage occurs, when the yarn on the yarn feeding bobbin 21 side is guided to the splicer device 14 for yarn joining, The spun yarn 20 on the yarn feeding bobbin 21 side must be wound around the fluffing roller 45 again. However, in order to automatically realize the operation of winding the spun yarn 20 in this way, the apparatus is expected to be extremely complicated. In this respect, in the present embodiment, the spun yarn 20 is configured to come into contact with only about one half of the outer periphery of the fluff binding roller 45, so that when the yarn breakage occurs, the spun yarn 20 on the yarn feeding bobbin 21 side. When the yarn is guided to the splicer device 14 by the lower yarn guide pipe 25, the spun yarn 20 is set in the state shown in FIG. 4 by guiding the spun yarn 20 to the downstream guide 47 and the upstream guide 48. can do. In this way, by adopting a configuration in which the spun yarn 20 is brought into contact with only about a half circumference of the fluff binding roller 45, a complicated configuration for winding the yarn around the fluff binding roller 45 becomes unnecessary.

  Next, the configuration of the downstream guide 47 will be described. As shown in FIG. 7 and the like, the downstream guide 47 is fixed to the upstream guide 48 (movable comb teeth 42). More specifically, the downstream guide 47 is attached to a comb driving arm 43 for driving the movable comb 42. Further, as described above, the movable comb teeth 42 can be moved by the rotary solenoid 44 in a direction approaching or separating from the fixed comb teeth 41. Here, when the movable comb tooth (upstream side guide) 42 is moved by the rotary solenoid 44, the downstream side guide 47 fixed to the movable comb tooth 42 also moves integrally. Thus, it can be said that the rotary solenoid 44 has a function as a yarn guide moving portion.

  Then, as the upstream guide 48 and the downstream guide 47 move as described above, a virtual line connecting the upstream guide point and the downstream guide point approaches or separates from the axis of the fluffing roller 45. Configured to move in the direction. Since the control unit can control the rotary solenoid 44 to move the upstream guide 48 and the downstream guide 47 in the direction crossing the yarn traveling path, as shown in FIGS. 7 (a) and 7 (b). In addition, it is possible to adjust how much the spun yarn 20 that contacts the surface of the fluff binding roller 45 is curved. Then, as shown in FIG. 7, as the meshing between the movable comb teeth 42 and the fixed comb teeth 41 becomes deeper, the spun yarn 20 between the upstream guide point and the downstream guide point becomes closer to the surface of the fluff binding roller 45. It is configured to be pressed strongly. As a result, the spun yarn 20 travels while being largely curved along the surface of the fluff binding roller 45.

  As described above, the upstream guide 48 and the downstream guide 47 provided so as to be movable in the direction crossing the yarn traveling path are moved by the rotary solenoid 44, and the yarn traveling path is bent to the outer peripheral surface of the fluff-skinning roller 45. Since the contact length of the spun yarn 20 can be changed, the fluffing action can be adjusted.

  Further, by controlling the rotary solenoid 44, the upstream guide point 48 and the downstream guide point 47 are moved by moving the upstream guide 48 and the downstream guide 47 in a direction in which the movable comb teeth 42 and the fixed comb teeth 41 are separated from each other. The connecting imaginary line is configured not to interfere with the fluff binding roller 45. This position is the “open position” of the upstream guide 48 and the downstream guide 47. That is, the control unit controls the rotary solenoid 44 to move the upstream guide 48 and the downstream guide 47 to the open position so that the spun yarn 20 does not contact the surface of the fluffing roller 45. it can. The positions of the upstream guide 48 and the downstream guide 47 (positions shown in FIGS. 4 and 7) when the spun yarn 20 is pressed against the surface of the fluffing roller 45 with respect to this open position are referred to as “closed”. Position.

  In this configuration, when the yarn breakage occurs and the yarn splicing operation is performed, the control unit controls the rotary solenoid 44 to move the upstream guide 48 and the downstream guide 47 to the open position. In this state, the spun yarn 20 can be delivered to the downstream guide 47 and the upstream guide 48 by guiding the spun yarn 20 on the yarn feeding bobbin 21 side to the splicer device 14 by the lower yarn guide pipe 25. When the yarn splicing operation at the splicer device 14 is completed and the winding unit resumes winding, the control unit controls the rotary solenoid 44 to move the downstream guide 47 and the upstream guide 48 to the closed position. Let Thereby, the spun yarn 20 can be set to the state of FIG. In this way, the spun yarn 20 can be easily introduced into the fluff binding device 16 by opening and closing the downstream guide 47 and the upstream guide 48 during yarn splicing.

  Further, as described above, the tension applying device 13 of the present embodiment is configured such that the meshing of the comb teeth 41 and 42 becomes shallower as the unwinding tension increases at the lower end of the winding bobbin 22. Therefore, the fluff binding device 16 of the present embodiment reduces the pressing of the spun yarn 20 against the surface of the fluff binding roller 45 as the unwinding tension increases (the curvature of the spun yarn 20 on the surface of the fluff curling roller 45 is reduced). Configured to be smaller). As described above, the pressing amount of the spun yarn 20 against the fluff binding roller 45 is automatically adjusted in accordance with the change in the unwinding tension of the spun yarn 20, so that a constant and stable fuzz from the upper end to the lower end of the spun yarn 20 is achieved. A downturn can be realized.

  Further, in the fluff binding device 16 of the present embodiment, the spun yarn 20 is pressed against the fluff binding roller 45, and the spun yarn 20 travels while being curved on the surface of the fluff binding roller 45. A certain resistance is applied to the spun yarn 20 passing through. In other words, it can be said that the fluff binding device 16 of the present embodiment functions as a kind of tension applying device. Further, as described above, the fluff binding device 16 of the present embodiment is configured so that the amount of pressing of the spun yarn 20 against the surface of the fluff binding roller 45 and the amount of bending of the spun yarn according to the change in the unwinding tension of the spun yarn 20. Can be adjusted. That is, the fluff binding device 16 of the present embodiment as a tension applying device also has a function of adjusting the tension applied to the spun yarn 20 according to the unwinding tension of the spun yarn 20. As described above, the fluff binding device 16 of this embodiment has a part of the function of the gate-type tension applying device 13.

  Therefore, the tension applying device 13 of the present embodiment is downsized compared to the conventional gate-type tension applying device. Specifically, the number of teeth of the comb teeth 41 and 42 is reduced as compared with the conventional gate-type tension applying device, and the vertical dimension in FIG. 7 is reduced. Thus, even if the tension applying device 13 is downsized, the fluff binding device 16 can supplement the function of the tension applying device, so that the tension applying unit 28 as a whole is applied with the same tension as the conventional gate tension applying device. Function can be demonstrated. Further, by downsizing the tension applying device 13 in the vertical direction, a space for disposing the fluff binding device 16 on the downstream side of the tension applying device 13 can be secured, so the entire tension applying unit 28 is configured compactly. can do.

  Next, the effect of fluffing by the fluffing device 16 of this embodiment will be described. In order to confirm the fluffing effect of the fluff binding roller 45, the inventors of the present application actually conducted winding by an automatic winder equipped with the fluff binding device 16 and performed an experiment to measure the increase rate of the number of fluff. FIG. 8 shows the result. Here, the increase rate of the number of fluffs represents the percentage of the increase in the number of fluffs of 3 mm or more contained per 100 m of the spun yarn by winding with an automatic winder. In the experiment of FIG. 8, a fluffing roller with urethane grooves (described later) is used.

  In FIG. 8, for comparison, the result of winding with an automatic winder not equipped with a fluff binding device, the result of winding with an automatic winder employing the fluff binding device of the present invention, and Is shown. As shown in FIG. 8, when the spun yarn is wound with an automatic winder without a fluff binding device, the increase rate of the number of fluffs is almost 140%, which indicates that the fluff is increasing. On the other hand, in the case of an automatic winder employing the fluff binding device of this embodiment, the rate of increase in the number of fluff is about 35%. Therefore, it was found that by using the fluff binding device of the present embodiment, fluff can be significantly suppressed as compared with the case where there is no fluff binding device. Thus, the effect of the present invention could be confirmed.

  Next, the material of the fluff binding roller 45 will be described. In order to determine the most suitable material for the fluff binding roller 45, the inventors of the present application form the surface of the fluff binding roller 45 using various materials, wind the spun yarn 20 using the fluff binding roller, An experiment was conducted to measure the increase in fluff. FIG. 9 shows the result. As shown in FIG. 9, in this experiment, an aluminum buff (buffed aluminum roller), NBR (nitrile rubber and smooth surface roller), urethane slip (urethane roller polished), etc. A comparison is made for these rollers.

  In addition, when the material of the surface of the fluff binding roller 45 is made of rubber such as nitrile rubber, a structure for ensuring the rigidity of the fluff binding roller 45 is required. An example of the structure of such a fluff binding roller 45 is shown in the sectional view of FIG. The fluff binding roller 45 shown in FIG. 10 has a configuration in which an aluminum tube 55 is further disposed inside a rubber tube 54 that constitutes the outer peripheral surface of the fluff binding roller 45. Thereby, the rigidity of the roller can be secured by the aluminum tube 55 while the surface of the fluff binding roller 45 is made of rubber. Further, both end portions of the rubber tube 54 and the aluminum tube 55 are closed with an aluminum lid member 56, and the lid member 56 is attached to the rotary shaft 58 via a bearing 57. With this configuration, the fluff binding roller 45 can be formed in a hollow shape to reduce the inertia.

  As a result of the above experiment, as shown in FIG. 9, it was found that when the nitrile rubber and urethane fluffing rollers were used, the increase rate of the number of fluffs was small (the fluffing effect was large). In particular, since the surface of the fluffing roller 45 is made of rubber, an appropriate frictional force can be generated between the fluffing roller 45 and the spun yarn 20, so that a large fluffing effect can be obtained. it is conceivable that. Moreover, nitrile rubber has the characteristics of being excellent in wear resistance and aging resistance and resistant to tearing. Since the fluffing roller 45 of this embodiment is considered to be easily worn by the sliding of the spun yarn 20, nitrile rubber having the above characteristics is used as a material for the surface of the fluffing roller 45. Particularly preferred.

  In addition, the inventors of the present application create a roller made of nitrile rubber with a fine groove on the surface (with NBR groove) and a roller made of urethane with a fine groove on the surface (with urethane groove), The above experiment was conducted. Specifically, as shown in FIG. 11, grooves 59 along the direction substantially perpendicular to the axis of the fluffing roller 45 are arranged on the outer peripheral surface of the fluffing roller 45 in the axial direction of the fluffing roller 45. Formed. The shape of the groove 59 is not particularly limited, but is preferably a shape without a sharp portion in order to suppress damage to the spun yarn 20. For example, a groove having a wavy cross-sectional profile when cut along a plane passing through the roller axis can be used.

  As shown in FIG. 9, in both cases of nitrile rubber and urethane, the effect of suppressing fluff is more when the groove is formed on the roller surface than when the roller surface is smooth. Was confirmed to be larger. Thus, it was found that the fluffing effect can be improved by forming a groove on the surface of the fluffing roller 45.

  As explained above, the fluff binding device 16 of this embodiment includes the fluff binding roller 45 and the yarn guide mechanism. The fluff binding roller 45 is disposed so that its axis is inclined with respect to the yarn travel path, and is provided so as to be rotatable about the axis. The yarn guide mechanism brings the spun yarn 20 into contact with a part of the outer peripheral surface of the fluff binding roller 45 when viewed in the axial direction.

  With this configuration, the spun yarn 20 travels while sliding on the surface of the fluff binding roller 45, and the yarn is twisted by the rotating fluff binding roller 45. By this twisting action and rubbing action at the time of sliding, the fluff fibers released on the surface of the spun yarn 20 are wound around the spun yarn 20 itself, and the fluff can be suppressed. In this way, the effect of fluffing can be realized with a simple configuration including one roller. In addition, since the spun yarn 20 is merely brought into contact with a part of the outer peripheral surface of the fluffing roller 45 without winding the yarn around the fluffing roller 45, the outer periphery of the fluffing roller 45 when the winding speed of the spun yarn 20 greatly varies. The spun yarn 20 can slide on the surface, and yarn breakage can be prevented.

  Further, in the fluff binding device 16 of this embodiment, the fluff binding roller 45 is cantilevered at the downstream end 45a.

  That is, in the fluff binding device 16 of the present embodiment, the spun yarn 20 travels while sliding on the surface of the fluff binding roller 45 disposed obliquely with respect to the travel path of the spun yarn 20, so that the spun yarn 20 Is caused to flow toward the end of the fluffing roller 45 on the upstream side of the travel path. Therefore, if it is configured to support the end portion on the upstream side of the yarn travel path of the fluffing roller 45, there is a problem that the yarn is easily tangled with the support shaft. In this respect, by configuring as described above, the spun yarn 20 can be prevented from being entangled with the support shaft of the fluff binding roller 45.

  Further, the fluff binding device 16 of this embodiment has a switching mechanism capable of switching the inclination of the axis of the fluff binding roller.

  Thereby, since the inclination of the fluff binding roller 45 can be changed according to the twisting direction of the spun yarn 20, the fluffing roller can be used regardless of whether the spun yarn 20 is twisted in the Z twist or the S twist. It is possible to wind the fluff by twisting on the upstream side of 45.

  In the fluff binding device 16 of the present embodiment, the upstream guide 48 and the downstream guide 47 are provided so as to be movable in a direction crossing the yarn traveling path. Then, the yarn guide mechanism changes the contact length of the spun yarn 20 that contacts the outer peripheral surface of the fluff binding roller 45 by bending the spun yarn 20 traveling on the yarn travel path.

  In this way, by changing the contact length of the spun yarn 20 with respect to the fluff binding roller 45, it is possible to adjust the fluff binding effect.

  In the fluff binding device 16 of the present embodiment, it is preferable that a groove is formed on the surface of the fluff binding roller 45 along a direction substantially perpendicular to the axis of the fluff binding roller 45.

  Thus, by forming a groove on the surface of the fluffing roller 45, a larger fluffing effect can be obtained as compared with the case where the surface is smoothed.

  Moreover, in the fluff binding device 16 of the present embodiment, the surface of the fluff binding roller 45 is preferably made of nitrile rubber.

  That is, nitrile rubber is particularly suitable as a material for fluffing rollers because it is excellent in wear resistance and aging resistance and is resistant to tearing.

  Moreover, in the fluff binding device 16 of the present embodiment, it is also effective to make the surface of the fluff binding roller 45 made of urethane. That is, when the fluffing roller 45 is made of urethane, a larger fluffing effect can be obtained as compared with a case where the fluffing roller 45 is made of metal such as aluminum.

  Further, in the fluff binding device 16 of this embodiment, the yarn guide mechanism includes an upstream guide 48, a downstream guide 47, and a rotary solenoid 44. It has. The upstream guide 48 guides the spun yarn 20 on the upstream side in the yarn running direction as viewed from the fluff binding roller 45 to the surface of the fluff binding roller 45 via the upstream yarn guide point. The downstream guide 47 guides the spun yarn 20 in contact with the surface of the fluff binding roller 45 further downstream from the fluff binding roller 45 through the downstream guide point. The rotary solenoid 44 moves the upstream guide 48 and the downstream guide 47 in a direction in which an imaginary line connecting the upstream guide point and the downstream guide point approaches or separates from the axis of the fluff binding roller 45. It is possible to make it.

  With this configuration, the amount of the spun yarn 20 pressed against the fluff binding roller 45 can be adjusted as appropriate, so that the fluff binding device 16 can function as a kind of tension adjusting device.

  The tension applying unit 28 of the present embodiment is a gate type that adjusts the tension of the traveling spun yarn 20 by appropriately adjusting the spacing between the fluff binding device 16, the movable comb teeth 42 and the fixed comb teeth 41. A tension applying device 13 and a bracket 29 are provided. Among the comb teeth of the movable comb tooth 42, at least one comb tooth is located closer to the fluff binding roller 45 than the comb teeth of the fixed comb tooth 41. Thereby, the movable comb teeth 42 also serve as the upstream guide 48 of the fluff binding device 16. Further, the downstream guide 47 is configured integrally with the movable comb teeth 42. The fluff binding device 16 and the tension applying device 13 are attached to the bracket 29.

  By configuring in this way, the upstream guide 48 and the downstream guide 47 move in accordance with the unwinding tension of the spun yarn 20, so that the amount of pressing the spun yarn 20 against the fluff binding roller 45 is It can be adjusted according to the unwinding tension of the spun yarn 20. Moreover, as described above, the fluff binding device 16 functions as a kind of tension adjusting device. Therefore, as a result that the fluff binding device 16 can take part of the function of the conventional gate tension applying device, the tension applying device 13 can be reduced in size. Furthermore, by fixing the fluff binding device 16 and the tension applying device 13 to the bracket 29, the fluff binding device 16 and the tension applying device 13 can be handled as one unit (tension applying unit 28).

  Further, the automatic winder of the present embodiment winds the spun yarn 20 of the yarn feeding bobbin 21 around the bobbing device 16, the bobbin support portion 31 that supports the yarn feeding bobbin 21, and the winding bobbin 22, and the package 30. The winding part 32 which forms is provided.

  Since the automatic winder includes the fluff binding device 16 that can suppress fluff with a simple configuration, a high-quality package can be formed at low cost.

  Moreover, the automatic winder of this embodiment is comprised so that the tension | tensile_strength provision unit 28 can be attached or detached freely.

  Since the automatic winder can remove the tension applying unit 28, it is excellent in maintainability.

  Further, the automatic winder of this embodiment is configured as follows. That is, the automatic winder includes a splicer device 14 and a control unit. The splicer device 14 splices the yarn end on the yarn feeding bobbin 21 side and the yarn end on the take-up bobbin 22 side. When the splicer device 14 performs the splicing operation, the control unit moves the upstream guide 48 and the downstream guide 47 to the open position, and when the splicing operation is completed and the winding unit resumes the winding operation. In this case, the upstream guide 48 and the downstream guide 47 are moved to the closed position to bring the spun yarn 20 into contact with the outer peripheral surface of the fluffing roller 45.

  That is, the spun yarn 20 can be easily introduced into the fluff binding device 16 by guiding the spun yarn 20 to the splicer device 14 with the yarn guide mechanism opened. Thus, fluffing can be easily performed by opening and closing the yarn guide mechanism during the yarn splicing operation of the automatic winder.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  In the above embodiment, the angle at which the axis of the fluffing roller is inclined with respect to the yarn traveling path is 45 degrees, but this is not limiting, and the angle at which the axis of the fluffing roller is inclined may be any number. However, the closer the axis of the fluffing roller is in parallel to the yarn travel path, the harder it is to rotate the fluffing roller instead of increasing the twisting force of the spun yarn. Conversely, the closer the axis of the fluff binding roller is to a right angle with respect to the yarn travel path, the smaller the force with which the spun yarn is twisted instead of facilitating rotation of the fluff binding roller. Considering the above points, the angle for inclining the axis of the fluff roller with respect to the yarn traveling path is inappropriate regardless of whether it is too large or too small. Particularly preferred.

  In the above embodiment, the tension applying device is of a gate type, but the present invention is not limited to this. For example, a disk type tension applying device may be used. However, when the gate-type tension applying device 13 is used as in the above embodiment, the movable comb teeth 42 of the tension applying device 13 can also serve as the upstream guide 48. Therefore, it is particularly preferable to combine the fluff binding device 16 of this embodiment with a gate-type tension applying device.

  In the above-described embodiment, the fluff binding device 16 and the tension applying device are collectively handled as one unit, but this configuration may be omitted.

  In the above embodiment, the upstream guide 48 and the downstream guide 47 are configured to be movable. However, this configuration is omitted, and for example, the upstream guide 48 and the downstream guide 47 may be fixed. However, since the upstream guide 48 and the downstream guide 47 can be moved as described above, the amount of pressing of the spun yarn 20 against the fluff binding roller 45 can be adjusted, so that it depends on the unwinding tension of the spun yarn 20. It can be used for fluffing treatment. Further, the upstream guide 48 and the downstream guide 47 may be fixed, and the fluffing roller 45 may be configured to be movable.

  Although FIG. 10 etc. demonstrated the example which formed the fluff binding roller 45 in the hollow shape, of course, the fluff binding roller 45 may be formed in the state where the inside was clogged. Moreover, although FIG. 10 etc. demonstrated the example which formed the fluff binding roller 45 using several raw materials, such as rubber | gum and aluminum, you may form the whole fluff binding roller with one raw material.

  The fluffing device and the tension applying unit of the present invention are not limited to an automatic winder and can be applied to other types of yarn winding machines such as a spinning machine.

DESCRIPTION OF SYMBOLS 10 Winder unit 13 Tension applying device 16 Fluff binding device 20 Spinning yarn 21 Yarn feeding bobbin 22 Winding bobbin 28 Tension applying unit 29 Bracket 30 Package 31 Bobbin support portion 32 Winding portion 41 Fixed comb teeth (fixed comb teeth portion)
42 Movable comb teeth (movable comb teeth)
45 Fluffy Roller

Claims (13)

A fluff binding device that suppresses the occurrence of fluff of traveling spun yarn,
A fluff binding roller that is arranged so that its axis is inclined with respect to the yarn traveling path, and is provided to be rotatable around the axis,
A yarn guide mechanism for bringing the spun yarn into contact with a part of the outer peripheral surface of the fluff binding roller;
A fluff binding device comprising: The fluff binding device according to claim 1,
The fluff binding apparatus is characterized in that the fluff binding roller is cantilevered at the end on the downstream side in the running direction of the spun yarn. The fluff binding device according to claim 1 or 2,
A fluffing device comprising a switching mechanism capable of switching an inclination of the axis of the fluffing roller. The fluff binding device according to any one of claims 1 to 3, wherein
The yarn guide mechanism is provided so as to be movable in a direction crossing the yarn traveling path,
The yarn guide mechanism changes the contact length of the spun yarn that contacts the outer peripheral surface of the fluff binding roller by bending the spun yarn traveling on the yarn traveling path. The fluff binding device according to any one of claims 1 to 4, wherein
A fluffing device characterized in that a groove along a direction substantially orthogonal to the axis of the fluffing roller is formed on the surface of the fluffing roller. The fluff binding device according to any one of claims 1 to 5,
A fluff binding device characterized in that the material of the surface of the fluff binding roller is rubber. The fluff binding device according to any one of claims 1 to 5,
A fluffing device characterized in that the surface of the fluffing roller is made of nitrile rubber. The fluff binding device according to any one of claims 1 to 5,
A fluff binding device characterized in that the surface of the fluff binding roller is made of urethane. The fluff binding apparatus according to any one of claims 1 to 8,
The yarn guide mechanism is
An upstream guide member that guides the spun yarn upstream in the yarn running direction as viewed from the fluffing roller to the surface of the fluffing roller via an upstream yarn guide point;
A downstream guide member for guiding the spun yarn in contact with the surface of the fluffing roller further downstream from the fluffing roller via a downstream yarn guide point;
The upstream guide member and the downstream guide member are moved in a direction in which a virtual line connecting the upstream yarn guide point and the downstream yarn guide point approaches or separates from the axis of the fluff binding roller. A thread guide moving part capable of
A fluff binding device characterized by comprising: The fluff binding apparatus according to claim 9,
A gate-type tension applying device that adjusts the tension of the traveling spun yarn by appropriately adjusting the distance between the movable comb-tooth portion and the fixed comb-tooth portion;
A bracket,
With
Among the comb teeth of the movable comb tooth portion, at least one comb tooth is located on the fluffing roller side with respect to the comb teeth of the fixed comb tooth portion, so that the movable comb tooth portion And also serves as the upstream guide member of the fluff binding device,
The downstream guide member is configured integrally with the movable comb tooth portion,
The tension applying unit, wherein the fluff binding device and the gate tension applying device are attached to the bracket. The fluff binding device according to any one of claims 1 to 9,
A yarn feeding bobbin support for supporting the yarn feeding bobbin;
A winding unit that winds the spun yarn of the yarn feeding bobbin onto a winding bobbin to form a package;
An automatic winder comprising: A tension applying unit according to claim 10;
A yarn feeding bobbin support for supporting the yarn feeding bobbin;
A winding unit that winds the spun yarn of the yarn feeding bobbin onto a winding bobbin to form a package;
With
An automatic winder characterized in that the tension applying unit is detachable. The automatic winder according to claim 11 or 12,
The automatic winder includes a yarn joining device for joining the yarn end on the yarn feeding bobbin side and the yarn end on the winding bobbin side;
When the yarn joining device performs the yarn joining operation, the yarn guide mechanism is opened, and when the yarn joining operation is completed and the winding unit resumes the winding operation, the yarn guide mechanism is moved. A controller for bringing the spun yarn into contact with the outer peripheral surface of the fluffing roller;
An automatic winder comprising:

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