JP2013067451A - Yarn winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the manufacture of a yarn winding device, and to reduce manufacturing costs.SOLUTION: Two guide members 44, 45 made of the same material and having the same shape are disposed opposite to each other to form therebetween a slit 55 through which a yarn Y passes. The guide member 45 is movable between a position for forming the slit 55 in a gap to the guide member 44 and a position spaced apart from the guide member 44, by rocking, together with a rocking arm 43, about a rocking shaft 51. A notch 41a having an open front edge is formed at a portion overlapping with the slit 55 of a base material 41 where the guide member 44 or the like is attached, and a wall at a rear side of the notch 41a prevents the yarn Y from coming off from a rear side of the slit 55. The rocking arm 43 includes a portion across the slit 55, and the portion prevents the yarn Y from coming off from a front side of the slit 55.

Description

  The present invention relates to a yarn winding device that winds a yarn unwound from a yarn supplying bobbin.

  In the automatic winder described in Patent Document 1, the yarn unwound from the pipe yarn (yarn feeding bobbin) is guided to the pretensioning device, and the pretensioning device applies tension to the yarn and is unwound. When unwinding failure such as loop omission occurs in the yarn, the passage of the yarn is blocked. The pretensioning device includes a fixed substrate and a swingable swinging arm. By swinging the swinging arm and approaching the substrate, the swinging arm enters the substrate and swings. There is a gap between the moving arm and the substrate. When the yarn is unwound normally, the yarn can pass through this gap. However, when there is a problem of unwinding such as looping, the yarn cannot pass through the gap. That is, the yarn is prevented from being sent to the winding unit side. Further, the tip of the swing arm is provided with two claws protruding toward the substrate, and these two claws prevent the thread from falling out of the gap between the substrate and the swing arm. ing.

Japanese Utility Model Publication No.62-1332075

  Here, in patent document 1, the board | substrate and rocking | fluctuation arm which comprise a pretension apparatus are members from which a shape differs mutually. On the other hand, in the automatic winder described in Patent Document 1, since the substrate and the swing arm are frequently in contact with the yarn while the yarn is being wound, the automatic winder is made of a material that does not damage the yarn, such as ceramics. There is a need. However, when the substrate and the swinging arm having different shapes are formed of a ceramic material or the like, it is necessary to individually form a mold for the substrate and the swinging arm, and the manufacturing process of the apparatus becomes complicated. At the same time, the manufacturing cost also increases.

  An object of the present invention is to provide a yarn winding device that is simple to manufacture and can reduce manufacturing costs.

  A yarn winding device according to a first aspect of the present invention includes a bobbin holding portion that holds a yarn feeding bobbin, a winding portion that winds a yarn unwound from the yarn feeding bobbin, the bobbin holding portion, and the winding portion. A defective yarn blocking portion that prevents the yarn that has been unwound in the yarn supplying bobbin from being sent to the winding portion side, and the defective yarn blocking portions are mutually connected. Two guide members that form a gap by being arranged to face each other are provided, and the two guide members have the same shape.

  Since the guide member constituting the defective yarn blocking portion is frequently in contact with the yarn, the guide member needs to be formed of a material that does not easily damage the yarn, such as ceramics. Therefore, if the shapes of the two guide members are different, separate molds are required to form the two guide members, the manufacturing process of the yarn winding device becomes complicated, and the manufacturing cost increases. End up.

  However, according to the present invention, since the two guide members have the same shape, the two guide members can be formed using the same mold or the like. As a result, the yarn winding device can be easily manufactured and the manufacturing cost can be reduced.

  The yarn winding device according to a second aspect of the present invention is the yarn winding device according to the first aspect of the present invention, wherein the two guide members move relative to each other to form the gap, and the unwound yarn is A defective yarn blocking state for preventing the yarn from being fed to the winding unit side, and a yarn for introducing the yarn between the two guide members, in which the two guide members are far apart from each other than the defective yarn blocking state One of the introduction states can be selectively taken.

  According to the present invention, the yarn can be easily introduced between the two guide members by moving the two guide members relative to each other so that the yarn is introduced in the defective yarn blocking state. The yarn can be easily passed through the gap between the two guide members.

  A yarn winding device according to a third invention is the yarn winding device according to the second invention, wherein the defective yarn blocking portion is a member different from the two guide members, and in the defective yarn blocking state, It further comprises two drop-off prevention members that are positioned on both sides of the portion of the gap through which the yarn passes and prevent the yarn from falling out of the gap.

  According to the present invention, it is possible to prevent the yarn from falling out of the gap between the two guide members. Here, the slip-off preventing member can be formed of a material that is easy to process, such as metal, because it only contacts temporarily when the yarn is about to slip out of the gap. For this reason, it is better to make the two guide members the same shape and to provide the yarn removal prevention member separately from the guide member, rather than making the two guide members different from each other so that the yarn does not fall out. This simplifies the manufacturing cost.

  A yarn winding device according to a fourth aspect of the present invention is the yarn winding device according to the third aspect of the present invention, wherein one guide member of the two guide members swings perpendicular to the surface on which the two guide members are arranged. The two guide members can be moved relative to each other by being supported so as to be swingable about a shaft, and are provided at a position farther from the swinging shaft among the two drop-off prevention members. Further, the drop-off prevention member swings integrally with the one guide member, and comes to a position separated from the other guide member in the yarn introduction state.

  According to the present invention, when the two guide members can be moved relative to each other by swinging one of the guide members, a position farther from the swing shaft among the two drop-off preventing members. The drop-off prevention member provided on the guide member swings integrally with the one guide member and is positioned at a distance from the other guide member in the thread-introduced state. When the yarn is introduced, the swinging shaft and the drop-off preventing member can be prevented from getting in the way.

  According to the present invention, since the two guide members have the same shape, the two guide members can be formed using the same mold or the like. Thereby, the manufacturing process of the yarn winding device can be simplified and the manufacturing cost can be suppressed.

It is a schematic block diagram of the automatic winder which concerns on embodiment of this invention. It is a top view of the pre-clearer at the time of yarn winding of FIG. FIG. 3 is a partially enlarged view of FIG. 2. It is a top view of the pre-clearer at the time of yarn introduction.

  Next, an embodiment of the present invention will be described. This embodiment is an example in which the present invention is applied to an automatic winder provided with a number of winding units that wind a yarn unwound from a yarn supplying bobbin around a winding tube to form a winding package. The automatic winder has a configuration in which a large number of winding units forming one package are arranged in one direction. FIG. 1 is a side view of one winding unit 1 (yarn winding device) of an automatic winder. In FIG. 1, the right side is defined as the front side (front side) where the operator works on the winding unit 1, and the left side is defined as the opposite rear side (back side).

  As shown in FIG. 1, each of the winding units 1 includes a bobbin supply device 2, a bobbin support portion 3, and a yarn winding portion 4. The winding unit 1 holds the yarn supplying bobbin 8 supplied from the bobbin supplying device 2 by the bobbin support portion 3 and traverses the spun yarn Y unwound from the yarn supplying bobbin 8 while winding the winding tube 1. 6 to form a package P having a predetermined shape.

  The bobbin supply device 2 stores a plurality of cylindrical yarn supply bobbins 8 each having a yarn wound around a core tube, and supplies one of the stored yarn supply bobbins 8 to the bobbin support portion 3. Specifically, the bobbin supply device 2 includes a columnar magazine 10 that houses a plurality of yarn feeding bobbins 8, and a plurality of yarn feeding bobbins 8 that are arranged below the magazine 10 and housed in the magazine 10. A guide chute 11 is provided for dropping one while guiding one toward the bobbin support 3. A support frame 12 is detachably provided on the machine base 7 of the winding unit 1 by, for example, screwing, and the magazine 10 and the guide chute 11 are vertically oriented so as to face the peg 16 of the bobbin support portion 3. Each is attached to the support frame 12 in a posture slightly inclined forward with respect to the direction.

  The magazine 10 is configured to be rotatable about a rotation shaft 13 attached to the support frame 12. The magazine 10 is formed with a plurality of bobbin accommodation holes (not shown) that are arranged in the circumferential direction and each accommodate a yarn feeding bobbin 8. A bobbin receiving plate 14 that receives a plurality of yarn feeding bobbins 8 respectively accommodated in a plurality of bobbin accommodating holes is provided below the magazine 10. The bobbin receiving plate 14 is formed with a notch (not shown). When the magazine 10 rotates and a yarn supplying bobbin 8 is positioned above the notch, the yarn supplying bobbin 8 is notched. It is comprised so that it may fall to the guide chute 11 via a part.

  The guide chute 11 has a pair of left and right opening / closing members 15, and guides the yarn feeding bobbin 8 that has dropped from the magazine 10 to the bobbin support 3 when the opening / closing member 15 is in an open state. When the opening / closing member is in the closed state, the yarn feeding bobbin 8 is prevented from dropping from the magazine 10 to the bobbin support 3.

  The bobbin support portion 3 includes a peg 16 that holds the yarn supply bobbin 8 by being inserted into a lower end portion of the core tube of the yarn supply bobbin 8, and a yarn supply bobbin 8 that is held by the peg 16 of the bobbin support portion 3. It has the spring board 17 discharged | emitted outside.

  The peg 16 is swingable in the front-rear direction, and when the yarn feeding bobbin 8 is supplied from the bobbin supplying device 2, the peg 16 is inclined to the front side so that the tip portion faces the guide chute 11 side, and the yarn When Y is wound, the posture is upright.

  When the yarn feeding bobbin 8 is held in an upright state by the pegs 16, the jumping plate 17 stands by in the horizontal state shown in FIG. 1. At this time, the lower end of the yarn feeding bobbin 8 is placed on the jumping plate 17. It is in contact. From this state, the jumping plate 17 rotates forward, and the yarn feeding bobbin 8 placed thereon is jumped forward to discharge the yarn feeding bobbin 8.

  The peg 16 and the jump plate 17 described above are driven by a stepping motor (not shown).

  In the yarn traveling path between the bobbin support portion 3 and the yarn winding portion 4, the yarn unwinding assist device 19, the pre-clearer 20, the tension applying device 21, the yarn splicing device 22, and the clearer 23 are sequentially arranged from the bobbin support portion 3 side. A waxing device 24 is provided.

  The yarn unwinding assisting device 19 lowers the movable cylindrical body 31 that covers the upper end portion of the yarn supplying bobbin 8 as the unwinding of the yarn Y progresses, thereby causing the yarn Y to be swelled (balloon) during unwinding. Regulate and thereby stabilize the unwinding tension.

  The pre-clearer 20 (defective yarn blocking portion) prevents the yarn Y from being sent to the yarn winding portion 4 side when the yarn feeding bobbin 8 has a problem with unwinding of the yarn Y such as looping (sluffing). Stop. This prevents the yarn Y from being wound in a state where the tension of the yarn Y fluctuates due to unwinding failure. The detailed configuration of the preclearer 20 will be described later.

  The tension applying device 21 is for applying a predetermined tension to the traveling yarn Y. As the tension applying device 21, for example, a gate type device having a fixed comb tooth and a movable comb tooth disposed so as to be movable with respect to the fixed comb tooth can be used.

  The yarn joining device 22 includes a yarn on the yarn feeding side (lower yarn) at the time of yarn cutting performed by the clearer 23 described below by detecting a yarn defect, or at the time of yarn breakage during yarn unwinding from the yarn feeding bobbin 8. The yarn on the winding side (upper yarn) is spliced. As the yarn joining device 22, for example, an untwisting nozzle that untwists each of the upper yarn end and the lower yarn end, and a twisting device that twists the untwisted yarn ends by causing a swirling air flow to act on them. A so-called pneumatic yarn splicing device (air splicer) having a nozzle can be used.

  The clearer 23 is for detecting a yarn defect such as a slab and the presence or absence of a yarn, and is provided with a cutter for cutting a yarn when detecting the yarn defect. The waxing device 24 is for applying wax to the yarn Y.

  Above and below the yarn joining device 22, the lower yarn catching guide member 25 for sucking and catching the lower yarn on the yarn supplying bobbin 8 side and guiding it to the yarn joining device 22 and the upper yarn on the package P side are sucked and caught for yarn joining. An upper thread catching guide member 26 for guiding to the device 22 is provided. The upper thread catching guide member 26 is formed in a pipe shape, and is arranged so as to be pivotable up and down about a shaft 26a, and a mouse 26b is provided at the tip thereof. Similarly, the lower thread catching and guiding member 25 is also configured in a pipe shape, and is disposed so as to be pivotable up and down about a shaft 25a, and a suction port 25b is provided at the tip thereof. In addition, an appropriate negative pressure source is connected to the upper thread catching guide member 26 and the lower thread catching guide member 25, and air is sucked from the mouse 26b and the suction port 25b at the distal end thereof to catch the thread end. Be able to.

  The yarn winding unit 4 includes a cradle 27 having a pair of cradle arms that rotatably and detachably supports the winding tube 6, and the surface of the winding tube 6 supported by the cradle 27, or the winding tube 6. A traverse drum 28 that can contact the surface of the formed package P is provided. The yarn winding unit 4 rotates the traverse drum 28 by a drum drive motor (not shown) in a state where the traverse drum 28 is in contact with the winding tube 6 (or the surface of the package P). The winding tube 6 is driven to rotate (following) while traversing and the package P is formed on the outer periphery of the winding tube 6.

  Next, the configuration of the preclearer 20 will be described in detail. As shown in FIGS. 2 and 3, the preclearer 20 includes a base material 41, a mounting member 42, a swing arm 43, two guide members 44 and 45, a slide member 46, an adjustment lever 47, and the like. 2 and 3, in order to make the drawings easy to understand, the base material 41 located closest to the paper surface is illustrated by a two-dot chain line, and a portion that appears on the paper front side when the base material 41 is removed. Is shown by a solid line.

  The base material 41 is a plate-like body made of a metal material or the like, and is fixed to the machine base 7 of the winding unit 1. Further, the base material 41 is formed with a notch 41a extending in the front-rear direction and having an open front end at the front end.

  The attachment member 42 is a substantially rectangular member made of a synthetic resin material or the like, and is a part located on the right side of the notch 41a in FIG. Is provided. Further, a space 42a extending in the left-right direction in FIG. 2 and opening at both ends thereof is formed inside the mounting member 42, and a guide member 44 is provided in the space 42a.

  The guide member 44 is a plate-like body made of, for example, a ceramic material, and approximately half (approximately right half in FIG. 2) is disposed inside the space 42a, and the remaining approximately half (approximately left half in FIG. 2) is It protrudes from the space 42a to the notch 41a side. Moreover, the part located in the space 42a of the guide member 44 has a substantially rectangular planar shape, and the part protruding from the space 42a has a width (front-rear direction) that is closer to the tip side (right side in FIG. 2). ) And a facing surface 44a extending in the front-rear direction is formed at the tip.

  Further, the portion of the guide member 44 disposed in the space 42a is fixed to the end of one side (left side in FIG. 2) of the slide member 46 that is also disposed in the space 42a. The slide member 46 is movable in the left-right direction in FIG. 2 along with the front and rear wall surfaces of the space 42 a and the guide member 44. The slide member 46 is urged in a direction away from the notch 41a (right side in FIG. 2) by a spring or the like (not shown). In addition, the end of the slide member 46 opposite to the guide member 44 has a part protruding to the opposite side of the guide member 44 (the right side in FIG. 2) with respect to the other part, and the tip thereof is on the lower side (see FIG. 2, the contact portion 46 a is formed by being bent.

  An adjustment lever 47 is provided on the opposite side of the slide member 46 across the guide member 44. The adjustment lever 47 is rotatably supported by a shaft 48 extending in the vertical direction (the vertical direction in FIG. 2). Further, the side surface of the end portion on the shaft 48 side of the adjustment lever 47 is an arc-shaped contact surface 47a, and the slide member 46 urged by the urging force of a spring (not shown) is brought into contact with the contact portion 46a. It is positioned at a position that contacts the surface 47a. Here, the center of the arc of the contact surface 47a is displaced from the shaft 48, and as the adjustment lever 47 is rotated in the counterclockwise direction in FIG. 2, the contact surface 47a moves toward the slide member 46 (see FIG. 2). (Left side)

  Further, the adjustment lever 47 is formed with a dome-shaped convex portion 47b in the middle thereof. Correspondingly, the base material 41 has a substantially circular shape corresponding to the convex portion 47b arranged along the arc drawn by the convex portion 47b when the adjustment lever 47 is rotated about the shaft 48. A plurality of through holes 41b are formed. Then, the adjustment lever 47 is rotated to a position where the convex portion 47b overlaps any one of the plurality of through holes 41b, and the convex portion 47b is engaged with the through hole 41b, whereby the adjustment lever 47 is moved to the base 41. Can be fixed to. Thereby, the adjustment lever 47 can be selectively fixed to the base material 41 at any position among a plurality of positions where the convex portion 47b overlaps the plurality of through holes 41b.

  The swing arm 43 swings on a swing shaft 51 provided in a portion of the lower surface of the base material 41 located on the rear side of the mounting member 42 in FIG. 2 and extending in the vertical direction (perpendicular to the plane of FIG. 2). The portion supported by the swing shaft 51 extends to the left front in FIG. 2, and the portion on the tip side of the middle portion is located on the left side in FIG. 2 with respect to the notch 41a. ing. The swing arm 43 can be swung around the swing shaft 51 by a motor or the like (not shown).

  Further, a protruding portion 43a that protrudes forward in the state shown in FIG. 2 (the state at the time of winding the yarn and the defective yarn blocking state) is provided at the tip of the swing arm 43. 2 is in the state shown in FIG. 2 (defective yarn blocking state), and the right side surface in FIG. 2 is in contact with the stopper 52 formed on the lower surface of the base material 41, whereby the swing arm 43 is in FIG. It is restricted from swinging further counterclockwise than the position shown in FIG.

  Further, the swing arm 43 is urged counterclockwise in FIG. 2 by a torsion spring (not shown) provided at a portion supported by the swing shaft 51. In the state of FIG. The protrusion 43a is in close contact with the stopper 52 by the biasing force of the spring. Further, the portion of the swing arm 43 supported by the swing shaft 51, that is, the portion provided with the torsion spring is sealed, and this causes the fluff to accumulate on the torsion spring and the like. It is prevented.

  The guide member 45 is a member having the same shape as the guide member 44 made of the same ceramic material as the guide member 44, and is a surface corresponding to the facing surface 44a in a direction in which the guide member 44 is rotated about 180 ° in plan view. The facing surface 45a is attached to the swing arm 43 so as to face the facing surface 44a. Thereby, a slit 55 extending in the front-rear direction is formed between the guide member 44 and the guide member 45. When the yarn Y is normally unwound from the yarn supplying bobbin 8, the yarn Y passes through the slit 55 and is sent to the yarn winding unit 4 side (the front side in FIG. 2).

  On the other hand, when a yarn unwinding failure such as a loop-out occurs in the yarn supplying bobbin 8, the yarn Y unwound from the yarn supplying bobbin 8 comes into contact with the guide members 44 and 45 to the yarn winding portion 4 side. It is blocked from being sent. This prevents the yarn Y from being wound in a state where the tension of the yarn Y has fluctuated due to unwinding failure. In addition, as shown in FIG. 2, the state in which the two guide members 44 and 45 are in the positions where the slits 55 are formed corresponds to the defective yarn blocking state according to the present invention.

  Then, the yarn Y that is prevented from being sent to the yarn winding unit 4 side is cut by the force with which the yarn winding unit 4 winds the yarn Y. When the yarn Y is cut, the clearer 23 detects that there is no yarn Y. In conjunction with this, the yarn Y on the yarn feeding bobbin 8 side and the yarn Y on the yarn winding unit 4 side are respectively The yarn is caught by the yarn catching guide member 25 and the upper yarn catching guide member 26 and guided to the yarn joining device 22, and the yarn Y is joined by the yarn joining device 22. Then, after the yarn joining is completed, the winding of the yarn Y is resumed.

  At this time, as described above, the protrusion 43 a of the swing arm 43 is in close contact with the stopper 52, so that the guide member 44 attached to the base member 41 and the guide member 45 attached to the swing arm 43. The width of the slit 55 formed between them (the length in the left-right direction in FIG. 2), that is, the distance between the guide member 44 and the guide member 45 is kept constant.

  The width of the slit 55 can be adjusted by rotating the adjusting lever 47 described above. More specifically, when the adjustment lever 47 is in the position indicated by the solid line in FIG. 2, that is, the convex portion 47b is connected to the through hole 41b on the most counterclockwise downstream side in FIG. In the overlapping position, the width of the slit 55 is the smallest. 2, when the adjustment lever 47 is rotated in the clockwise direction in FIG. 2 from this position, the contact surface 47b moves away from the slide member 46. In conjunction with this, the slide member 46 urged by a spring (not shown) and the guide member 44 attached to the slide member 46 move in a direction away from the guide member 45 (right side in FIG. 2). Thereby, the space | interval of the guide member 44 and the guide member 45 spreads, and the width | variety of the slit 55 becomes large. And the width | variety of the slit 55 becomes large, so that the adjustment lever 47 is fixed to the base material 41 in the position where the convex part 47b overlaps with the through-hole 41b of the counterclockwise direction upstream in FIG.

  Here, the width of the slit 55 is adjusted according to the thickness and type of the yarn Y so that the yarn Y that has been correctly unwound can pass through, but the yarn Y that has had unwinding failure cannot pass through. Is done. For example, when the yarn Y is a yarn with a cotton count 90, the width of the slit 55 is adjusted to about 0.4 to 0.5 mm, and when the yarn Y is a yarn with a cotton count 30, the slit 55 The width is adjusted to about 0.6 to 0.9 mm.

  Further, the rear end of the notch 41 a is positioned immediately behind the slit 55 in FIG. 2, and the yarn Y is formed into the slit 55 by the portion 41 c serving as the rear end wall of the notch 41 a of the base material 41. It is prevented from falling off from the rear side.

  Further, the swing arm 43 is provided with a portion 43b extending rightward in FIG. 2 so as to cross the slit 55 from the portion where the guide member 45 is attached. The yarn Y is prevented from falling off from the front side of the slit 55.

  In the present embodiment, the portion 41c that becomes the rear end wall of the notch 41a of the base material 41 and the portion 43b that crosses the slit 55 of the swing arm 43 serve as two drop-off preventing members according to the present invention. Equivalent to.

  Further, when threading in the winding unit 1, a motor (not shown) is driven to swing the swing arm 43 in the clockwise direction in FIG. Then, the swing arm 43 and the guide member 45 swing integrally, and as shown in FIG. 4, the guide member 45 is separated from the guide member 44 to increase the distance between them. The portion 43b (a drop-off prevention member that is further away from the swing shaft 51 among the two drop-out prevention members) moves to a position on the left side of the notch 41a in FIG. In addition, the state in which the two guide members 44 and 45 are located at positions separated from each other corresponds to the yarn introduction state according to the present invention.

  Accordingly, as indicated by an arrow A in FIG. 4, the yarn Y can be introduced into the notch 41a from the opening of the notch 41a, and the yarn Y is opposed to the facing surface 44a of the notch 41a. In this state, by swinging the swing arm 43 in the counterclockwise direction of FIG. 4, the yarn Y can be easily passed through the slit 55 as shown in FIG.

  At this time, since the portion of the swing arm 43 that has crossed the slit 55 is located on the left side of the notch 41a in FIG. 4, when the yarn Y is introduced into the notch 41a, the swing arm 43 The above part does not get in the way.

  Next, modified examples in which various changes are made to the present embodiment will be described. However, the description of the same configuration as the present embodiment will be omitted as appropriate.

  In the above-described embodiment, the guide member 45 attached to the swing arm 43 is moved relative to the guide member 44 by swinging together with the swing arm 43. Not limited. The guide member 45 may move relative to the guide member 44 by moving in a direction different from the above-described embodiment, for example, by moving in parallel in the left-right direction in FIG.

  In the above-described embodiment, the two guide members 44 and 45 move relative to each other when the one guide member 45 moves. However, both the two guide members 44 and 45 move. Accordingly, the two guide members 44 and 45 may be moved relative to each other.

  Furthermore, the two guide members 44 and 45 are not limited to be configured to move relative to each other, and are fixed at a position where the slit 55 is formed (position shown in FIG. 2, defective yarn blocking state). Also good. However, in this case, it is necessary to pass the yarn Y directly through the narrow slit 55 when threading.

  Further, in the above-described embodiment, the yarn 41 is prevented from falling off from the slit 55 by the portion 41 c serving as the rear end wall of the base material 41 and the portion 43 b crossing the slit 55 of the swing arm 43. However, the present invention is not limited to this.

  For example, the swing arm 43 is provided with two portions extending so as to cross the regions of the slit 55 located on both sides of the passage portion of the yarn Y in the state of winding the yarn. Two drop-off preventing members may be formed. In this case, in the above-described yarn introduction state, of the two portions of the swing arm 43, at least a portion further away from the swing shaft 51 is located on the left side of the notch 41a in FIG. If it is, the yarn Y can be introduced from the opening of the notch 41 a and the yarn Y can be passed through the slit 55.

  In addition, two drop-off prevention members are provided separately from the swing arm 43, and among the drop-off prevention members, at least the drop-off prevention member that is further away from the swing shaft 51 is independent of the guide member 45. It may come to move.

  Alternatively, the front end of the notch 41a may not be open, and the portions that become the front and rear walls of the notch 41a of the base material 41 may be two dropout prevention members. However, in this case, since the front end of the notch 41a is not open, it is necessary to introduce the yarn Y from below in order to introduce the yarn Y into the notch 41a.

  Furthermore, if the thread Y does not fall out of the slit 55, for example, when the slit 55 extends sufficiently long in the front-rear direction, the drop-off preventing member may not be provided.

8 Yarn feeding bobbin 16 Peg 20 Preclearer 41 Base material 41a Notch 41c Part 43 Swing arm 43b Part 44, 45 Guide member 55 Slit

Claims (4)

A bobbin holding part for holding the yarn feeding bobbin;
A winding unit for winding the yarn unwound from the yarn feeding bobbin;
A defective yarn blocking portion that is provided between the bobbin holding portion and the winding portion, and that prevents a yarn that has been unwound in the yarn feeding bobbin from being sent to the winding portion side; Prepared,
The defective yarn blocking portion is
Two guide members that form a gap by being arranged to face each other,
The yarn winding device, wherein the two guide members have the same shape. By moving the two guide members relative to each other,
A defective yarn blocking state that prevents the yarn having a unwinding defect that forms the gap from being sent to the winding unit side;
It is possible to selectively take one of a yarn introduction state for introducing a yarn between the two guide members, in which the two guide members are separated from each other more than the defective yarn prevention state. The yarn winding device according to claim 1, wherein   The defective yarn blocking portion is a member different from the two guide members, and is positioned on both sides of the gap through which the yarn passes in the defective yarn blocking state. The yarn winding device according to claim 2, further comprising two drop-off preventing members that prevent the yarn from falling. One guide member of the two guide members is supported so as to be swingable about a swing shaft orthogonal to the surface on which the two guide members are disposed, so that the two guide members are relatively Is movable,
Of the two drop-off prevention members, the drop-off prevention member provided at a position further away from the swing shaft swings integrally with the one guide member, and the other of the two drop-off prevention members in the thread introduction state. The yarn winding device according to claim 3, wherein the yarn winding device is located at a position separated from the guide member.

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