JP6164190B2 - Special yarn production equipment in spinning machines - Google Patents

Description

  The present invention relates to a special yarn manufacturing apparatus in a spinning machine, and more specifically, by changing the fiber bundle supply timing from a plurality of fiber bundle supply units under a preset condition, a special yarn in which different colors and raw material portions are continuous is provided. The present invention relates to a special yarn manufacturing apparatus in a spinning machine.

  Conventionally, as a draft device in a spinning machine that spins one yarn by changing the blending ratio of two kinds of roving yarns, as shown in FIG. 14, three bottom rollers 81, 82, 83, and bottom rollers 81, The compactor device 85 is provided downstream of the bottom roller 81 of the drafting device provided with pressing rollers 81a, 83a provided corresponding to 83 and aprons (belts) 82a, 82b provided on the pressing rollers corresponding to the bottom roller 82. An apparatus comprising: In this apparatus, the pressing roller 81a is common to the base roving S and the color roving T. The base roving S is drafted and sent out through the three bottom rollers 81, 82, 83 and the corresponding pressing rollers 81a, 83a and the apron 82a, and the color roving T is composed of the two bottom rollers 81, 82 and the corresponding pressing roller 81a and apron 82b are drafted and sent out. Then, the base roving S and the color roving T come out of the roller pair including the bottom roller 81 and the pressing roller 81a, and then are combined by the compactor device 85 into a patterned yarn. The compactor device 85 rotates around an axis out of a suction machine, a fixed bar, or a yarn path, and is arranged so as to coincide with the outlet of the color roving T. A yarn guide 87 is provided downstream of the compactor device 85.

International Publication No. 2011-018685

  In the configuration of Patent Document 1, if the rotational speed of the bottom roller 82 for the color roving yarn T is set to 0, a yarn in which the base roving S is used alone as a raw fiber without the color roving T being mixed is spun. Is issued. Further, if the color roving T is supplied by rotating the bottom roller 82, a yarn in which the color roving T is mixed with the base roving S is spun, and the rotation speed of the bottom roller 82 is changed to change the unit. Yarns having different mixing ratios of the color roving yarn T per length are spun. However, in the rough yarn passing through the compactor device 85 and the yarn guide 87, the twist applied to the yarn being spun by a twisting portion (not shown) is propagated to a position where it is gripped by the roller pair composed of the bottom roller 81 and the pressing roller 81a. End up. For this reason, when switching from spinning of a yarn in which the base roving S is used alone as a raw fiber to spinning of a yarn in which the color roving T is used alone as a raw fiber, a twisted base is applied. It is necessary to join the end of the color roving T which is not twisted to the end of the roving S. However, it is difficult to join the non-twisted color roving T to the base roving S that is twisted, and there is a high probability that the joining of the two will fail. Therefore, it is not possible to spin a yarn having a portion in which 100% switching between the base roving yarn S and the color roving yarn T is repeated.

  The present invention has been made in view of the above-described problems, and the object thereof is to satisfactorily switch the raw fiber bundles when producing a special yarn in which different colors and raw material portions are continuous. It is to provide a special yarn manufacturing apparatus in a spinning machine.

An apparatus for producing a special yarn in a spinning machine that solves the above problem includes an apron draft including a front roller and an apron pair capable of independently supplying a plurality of fiber bundles provided behind the front roller to the front roller. A special yarn manufacturing apparatus in a spinning machine having a plurality of parts. Then, the rear end portion of the fiber bundle sent out from the apron pair operating before switching and the front end portion of the fiber bundle sent out from the apron pair started operating after switching are joined downstream of the front roller. And a twist stopper that feeds out the fiber bundle while gripping the fiber bundle on the downstream side of the joint so as to prevent the twist from propagating to the fiber bundle in the joint. .

  According to this configuration, at the time of switching the supply fiber bundle, the joining is performed to join the end (rear end) of the fiber bundle that is cut when the supply is stopped and the end (front end) of the fiber bundle that is supplied instead. Unlike the prior art, the portion is prevented from twisting being propagated from the twisted portion by the action of the anti-twisting portion. Therefore, at the joint, the ends of the plurality of fiber bundles that are not twisted are joined together, and the joined fiber bundles are twisted from the time when the joined fiber bundle passes through the anti-twisting portion. Twist from the hook is propagated and twist is added. The joined fiber bundle is twisted to form a yarn, and the end portion of the fiber bundle supplied in place of the fiber bundle is reliably joined to the end portion of the cut fiber bundle. That is, when the supply fiber bundles are switched, the ends of the fiber bundles to be joined are joined together without being twisted and then subjected to twisting, so that the fibers are entangled well. Therefore, when producing a special yarn in which different colors and raw material portions are continuous, the raw fiber bundle can be switched well.

  It is preferable that the joining portion includes a transport unit that transports the fiber bundle. The joining portion needs to join at least the end portion of the fiber bundle to be joined to the end portion of the fiber bundle being spun. If it has a conveyance part, it can run in the state where the fiber bundle before receiving twisting was stabilized to the twist stop part.

  The transport unit may be a mesh apron. In the case where the fiber bundle is joined by applying a negative gas pressure or a positive pressure to the fiber bundle at the joint, if the transport unit is a mesh apron, the transport unit does not hinder the joining of the fiber bundle. Moreover, it becomes lighter compared with the case where the transport unit is formed of a nonporous belt.

  The joint portion is a delivery roller whose axial direction extends in a direction intersecting with an axial direction of a roller constituting the apron draft portion. According to this configuration, the delivery roller acts so as to apply forces in a direction approaching each other to the plurality of fiber bundles sent out from the draft portion, and promotes the joining of the fiber bundles. In addition, the structure is simplified because the anti-twisting portion also serves as the joint portion.

  The joint may be a suction slit. The suction slit is formed so as to be inclined with respect to the traveling direction of the fiber bundle on the upstream side and the downstream side of the suction slit, and is a guide that is one side edge of both side edges in the width direction of the suction slit. A part of the other side edge of the both side edges intersects with a virtual line passing through the downstream end of the edge and parallel to the traveling direction of the fiber bundle.

  According to this configuration, in the state where the fiber bundle being spun moves through the downstream edge of the suction slit, the end portion (tip portion) of the fiber bundle to be spun instead of the upstream edge of the suction slit. After passing, it moves so as to approach the fiber bundle being spun by the negative pressure of the suction slit. Then, after the end (rear end) of the fiber bundle spun and spun together is joined and joined to the end (rear end) of the fiber bundle being spun, it passes through the twist-preventing portion.

  According to the present invention, the raw fiber bundle can be favorably switched when producing a special yarn in which different colors and raw material portions are continuous.

The perspective view of the special thread manufacturing apparatus of 1st Embodiment. The schematic side view of the spinning machine provided with the special yarn manufacturing apparatus. It is a schematic diagram explaining the effect | action at the time of raw material switching, (a) is a schematic diagram which shows the spinning state which uses the 1st roving as a raw material, (b) is the 1st roving cutting, the 2nd roving The schematic diagram of a supply start state. It is a figure explaining the effect | action at the time of raw material switching, (a) is a schematic diagram which shows the state in which the front-end | tip part of the 2nd roving and the rear end of the 1st roving entered the guide part, (b) FIG. 3 is a schematic view showing a state where the tip end portion of the second roving yarn and the rear end portion of the first roving yarn merge. The schematic diagram which shows the state in which the 2nd roving and the 1st roving are joined and it passes through the twist stop. The partially broken side view of the special thread manufacturing apparatus of 2nd Embodiment. The schematic diagram corresponding to Fig.3 (a) which shows the spinning state which uses a 1st roving as a raw material. The partially broken side view of the special thread manufacturing apparatus of 3rd Embodiment. The schematic diagram corresponding to Fig.3 (a) of a special thread manufacturing apparatus. The partially broken side view of the special thread manufacturing apparatus of 4th Embodiment. The schematic diagram which shows the shape of a suction slit. (A), (b) is a schematic diagram which shows the shape of the suction slit of another embodiment. The partial model side view of another embodiment. The schematic top view of a prior art draft apparatus.

(First embodiment)
Hereinafter, a first embodiment embodied in a spinning machine that spins special yarn using a plurality of (two) rovings suspended from a creel of a spinning machine as a raw material will be described with reference to FIGS.

  As shown in FIG. 2, the special yarn manufacturing apparatus 10 is applied to a spinning machine having a fiber bundle supply unit 11 that can independently and intermittently supply the roving yarns S1 and S2 as a plurality (two) of fiber bundles. Is done. The fiber bundle supply unit 11 includes roving yarn windings 13a and 13b suspended from a creel 12 of a spinning machine. A traveler 17 that travels on the ring 16 as the bobbin 15 mounted on the spindle 14 rotates forms a twisting portion 18 that twists the yarn Y.

  The special yarn manufacturing apparatus 10 includes a draft portion 21 provided below the fiber bundle supply portion 11, a joining portion 22 that joins the ends of the roving yarns S1 and S2 fed from the draft portion 21, and a joining portion. 22 for preventing the twist from propagating from the twisted portion 18 to the roving yarns S1 and S2, and the control for controlling the feeding and stopping of the roving yarns S1 and S2 in the draft portion 21 and the twisting preventing portion 23. And a control device 24 (shown in FIG. 1) as a unit.

  Next, the special yarn manufacturing apparatus 10 will be described in detail. As shown in FIG. 1, the draft unit 21 includes a front roller 25, a first apron pair 26 that is provided behind the front roller 25 and supplies the first roving S 1 to the front roller 25, and the front roller 25. A second apron pair 27 that is provided at the rear and supplies the second roving yarn S2 to the front roller 25 is provided. That is, the draft unit 21 includes an apron pair 26 and 27 provided corresponding to the first roving yarn S1 and the second roving yarn S2, respectively, and a front roller 25 common to the apron pairs 26 and 27. Yes. The apron pairs 26 and 27 and the front roller 25 constitute an apron draft unit.

  The draft portion 21 is an integral type of two spindles, and includes a top roller such as a front top roller 25b on both sides of the weighting arm 28. The front roller 25 includes a front bottom roller 25a and a front top roller 25b, and the front top roller 25b is supported by a weighting arm 28 via a support arm 29.

  The first apron pair 26 includes a middle bottom apron 30 and a middle top apron 31. The middle bottom apron 30 is wound around a ten server, a middle bottom roller 32, and a tensioner. The middle top apron 31 includes a middle top roller 34 rotatably supported at both ends of a support shaft supported by a support arm 33 fixed to the weighting arm 28, and an apron cradle supported with respect to the support shaft. It is wrapped around.

  The second apron pair 27 includes a back bottom apron 35 (shown in FIGS. 3, 4, and 5) and a back top apron 36. The back bottom apron 35 shares the ten server and the tensioner with the middle bottom apron 30 and is wound around the back bottom roller 37 so as to pass the outer periphery of the middle bottom roller 32.

  The back top apron 36 includes a back top roller 38 rotatably supported at both ends of a support shaft 38 a supported by a support arm fixed to the weighting arm 28, and a tensioner provided in an apron cradle of the middle top roller 34. It is wrapped around. That is, the back top apron 36 shares the tensioner with the middle top apron 31 and is wound around the back top roller 38 so as to pass the outer periphery of the middle top roller 34.

The first roving yarn S1 is supplied to the first apron pair 26 via the first trumpet 39, and the second roving yarn S2 is supplied to the second apron pair 27 via the second trumpet 40. .
The front roller motor 41 that drives the front bottom roller 25a, the middle roller motor 42 that drives the middle bottom roller 32, and the back roller motor 43 that drives the back bottom roller 37 are controlled based on commands from the control device 24. Drive control is performed via independent inverters 44, 45, and 46, respectively.

  The joint portion 22 is formed in a funnel shape having a cylindrical portion 22b on the outlet side of the guide portion 22a whose diameter is increased toward the upstream side in the same manner as the trumpet of the spinning machine. The diameter of the guide portion 22a on the inlet side is set to be larger than the maximum interval between the two roving yarns S1 and S2 fed from the front roller 25.

  The twist prevention unit 23 includes a delivery roller pair 47 as a delivery roller, and a bottom roller 47 a of the delivery roller pair 47 is driven by a delivery roller motor 48. The delivery roller motor 48 is driven and controlled via an inverter 49 that is controlled based on a command from the control device 24. The top roller 47b of the delivery roller pair 47 is supported by a support arm 29 common to the front top roller 25b.

  The control device 24 includes a microcomputer, operates based on predetermined program data stored in the memory, controls the motors 41 to 43 via the inverters 44 to 46, and delivers the delivery roller motor via the inverter 49. 48 is controlled. The control device 24 controls the feeding and stopping of the first roving yarn S1 by controlling the driving and stopping of the middle roller motor 42, and controls the driving and stopping of the back roller motor 43, Controls the sending and stopping of the second roving yarn S2.

Next, the operation of the special yarn manufacturing apparatus 10 configured as described above will be described.
In the special yarn manufacturing apparatus 10, the first coarse yarn S 1 is supplied from the first coarse yarn winding 13 a suspended from the creel 12 to the first apron pair 26 via the first trumpet 39 and suspended from the creel 12. The second roving yarn S2 is supplied to the second apron pair 27 via the second trumpet 40 from the suspended second roving winding 13b. The first roving yarn S1 and the second roving yarn S2 are made of the same raw material fiber and have the same thickness except that the colors are different.

  When spinning the yarn Y using the first roving S1 as the raw fiber, the front roller 25, the first apron pair 26 and the delivery roller pair 47 are driven in a state where the second apron pair 27 is stopped. . By driving the first apron pair 26, the first roving S1 of the first roving winding 13a is supplied to the first apron pair 26, and the first roving S1 is connected to the front roller 25 and the first roller. Draft with a pair of apron 26 and become a fleece. After the fleece is fed from the front roller 25, the fleece is wound around the bobbin 15 as a yarn Y through the joint portion 22, the twist-preventing portion 23 (delivery roller pair 47), the snell wire 19 (shown in FIG. 2), and the traveler 17.

  When spinning the yarn Y using the second roving S2 as the raw fiber, the front roller 25, the second apron pair 27, and the delivery roller pair 47 are driven in a state where the first apron pair 26 is stopped. . By driving the second apron pair 27, the second roving yarn S2 of the second roving yarn winding 13b is supplied to the second apron pair 27, and the second roving yarn S2 is connected to the front roller 25 and the second roll yarn. Draft between the apron pair 27 and become a fleece. After the fleece is fed from the front roller 25, the fleece is wound around the bobbin 15 as a yarn Y through the joint portion 22, the twist-preventing portion 23 (delivery roller pair 47), the snell wire 19 (shown in FIG. 2), and the traveler 17.

  Supply of the first roving yarn S1 and the second roving yarn S2 is switched at a preset time, and only one of the first roving yarn S1 and the second roving yarn S2 is the front, except during switching. The roller 25 is supplied. The supply amount per unit time of the first roving yarn S1 is proportional to the speed of the apron of the first apron pair 26, and the supply amount per unit time of the second roving yarn S2 is the second apron pair 27. Proportional to the apron speed.

  When stopping the supply of the first roving yarn S1, the driving of the middle bottom roller 32 is stopped. When the drive of the middle bottom roller 32 is stopped, the drive of the first apron pair 26 is stopped. When the driving of the first apron pair 26 is stopped, the first roving S1 being spun is cut between the nip point of the first apron pair 26 and the nip point of the front roller 25. Therefore, when the supply of the first roving yarn S1 is started again, the driving of the first apron pair 26 is started when the driving of the middle bottom roller 32 is started, and the first roving S1 is smoothly fed to the front roller. 25 and the first apron pair 26 are drafted.

  Further, when the supply of the second roving yarn S2 is stopped, the driving of the back bottom roller 37 is stopped. When the driving of the back bottom roller 37 is stopped, the driving of the second apron pair 27 is stopped. When the driving of the second apron pair 27 is stopped, the second roving S2 being spun is cut between the nip point of the second apron pair 27 and the nip point of the front roller 25. Therefore, when the supply of the second roving yarn S2 is started again, when the driving of the back bottom roller 37 is started, the driving of the second apron pair 27 is started and the second roving yarn S2 is smoothly fed to the front roller. 25 and the second apron pair 27 are drafted.

  Next, the operation at the time of switching from the state where the yarn Y is spun using the first roving S1 as the fiber raw material to the state where the yarn Y is spun using the second roving S2 as the fiber raw material is shown in FIGS. 5 will be described. 3 to 5, the middle top apron 31 of the first apron pair 26 and the back top apron 36 of the second apron pair 27 are not shown.

  In a state where the yarn Y is spun from the first roving S1 as the raw fiber, the first roving S1 is shown in FIG. 3A as the first apron pair 26 (only the middle bottom apron 30 is shown). ), Spinning through the front roller 25, the joining portion 22 and the delivery roller pair 47. The second roving yarn S2 is stopped in a state where the tip end portion S2a is located between the front roller 25 and the second apron pair 27 (only the back bottom apron 35 is shown).

  In order to switch the raw material fiber to the second roving yarn S2 from this state, the supply of the first roving yarn S1 is stopped and the supply of the second roving yarn S2 is started. The supply stop of the first roving yarn S1 is performed by stopping the driving of the first apron pair 26, and the supply start of the second roving yarn S2 starts the driving of the second apron pair 27. Is done. When the driving of the first apron pair 26 is stopped, the first roving yarn S1 is cut between the nip position by the front roller 25 and the tip of the nip position by the first apron pair 26. The leading end of the second roving yarn S2 is surely positioned downstream from the rear end of the first roving S1 being spun, and the rear end portion S1a of the first roving yarn S1 and the second roving yarn After the start of the supply of the second roving yarn S2, the supply of the first roving yarn S1 is stopped after a predetermined time so that the tip portion S2a of S2 joins (joins), as shown in FIG. It will be in the state shown. In this state, the tip portion S2a of the second roving yarn S2 is in a state separated from the first roving yarn S1 being spun in the axial direction of the front roller 25.

  When the supply of the second roving yarn S2 is continued from the state shown in FIG. 3 (b) and the tip portion S2a of the second roving yarn S2 moves to a position where it can engage with the joint portion 22, FIG. 4 (a). It will be in the state shown in When the supply of the second roving yarn S2 is further continued from this state, the tip end portion S2a of the second roving yarn S2 is spun along the guide portion 22a of the joining portion 22 in the first roving yarn S1. As shown in FIG. 4 (b), at the time of passing through the cylindrical portion 22b, the rear end portion S1a of the first roving yarn S1 is joined and joined. It passes through the cylindrical portion 22b. Then, when the supply of the second roving yarn S2 is further continued, as shown in FIG. 5, the rear end S1a of the first roving S1 being spun and the second spinning start newly started. Are connected in a state in which the tip S2a of the roving yarn S2 is intertwined. Then, the switching from the state where the yarn Y is spun using the first roving yarn S1 as the fiber raw material to the state where the yarn Y is spun using the second roving yarn S2 as the fiber raw material is completed.

  Switching from the state in which the yarn Y is spun using the second roving yarn S2 as the fiber raw material to the state in which the yarn Y is spun from the first roving yarn S1 as the fiber raw material is performed as described above. Description of the first roving S1 and the second roving S2 at the time of switching from the state in which the yarn Y is spun using the second raw yarn S2 as the fiber raw material to the state in which the yarn Y is spun using the second raw yarn S2 as the fiber raw material It is performed in the same manner with the state reversed.

According to this embodiment, the following effects can be obtained.
(1) The special yarn manufacturing apparatus 10 is a special yarn manufacturing apparatus in a spinning machine having a plurality of apron draft sections that can be switched. And a joining portion 22 that joins the rear end portion of the fiber bundle that has been sent out from the apron draft portion that was operating before the switching and the tip portion of the fiber bundle that is sent out from the apron draft portion that has started operation after the switching, A twist stopper 23 is provided that feeds the fiber bundle while grasping the fiber bundle downstream of the joint 22 so as to prevent the twist from propagating to the fiber bundle at the joint 22.

  According to this configuration, at the time of switching the supply fiber bundle, the end portion (rear end portion) of the fiber bundle being spun, which has been stopped, and the end portion (front end portion) of the fiber bundle supplied instead Unlike the prior art, the twisting portion 23 prevents the twist from being propagated from the twisted portion 18 to the joining portion 22 to be joined. Therefore, in the joining portion 22, the ends of the plurality of fiber bundles that are not twisted are joined together, and the joined fiber bundles from the time when the joined fiber bundle passes through the anti-twisting portion 23. The twist from the twisted portion 18 is propagated to the twisted portion. Then, the joined fiber bundle is twisted into a yarn Y, and the end of the fiber bundle supplied instead of the fiber bundle is reliably joined to the end of the fiber bundle that has been stopped. That is, when the supply fiber bundles are switched, the ends of the fiber bundles to be joined are joined together without being twisted and then subjected to twisting, so that the fibers are entangled well. Therefore, when producing a special yarn in which different colors and raw material portions are continuous, the raw fiber bundle can be switched well.

  (2) Coarse yarn is used as the fiber bundle, and the joint portion 22 is formed in a funnel shape having a cylindrical portion 22b on the outlet side of the guide portion 22a whose diameter is increased toward the upstream side, and the inlet side of the guide portion 22a Is set to be larger than the maximum distance between the two rovings S1 and S2 fed from the front roller 25. Therefore, with a simple configuration, the leading end of the newly spun roving to be joined to the trailing end of the roving to be spun is sent to the twist-preventing portion 23 in a state where the leading end of the newly spun is reliably joined. it can.

  (3) When the raw material fiber is switched, the control device 24 starts the supply of the raw material fiber to be spun newly, and after a predetermined time, stops the supply of the raw material fiber being spun, and the middle roller motor 42 and The back roller motor 43 is driven and controlled. Therefore, the fiber newly spun at the rear end of the fiber bundle being spun while the front end of the fiber bundle to be spun is surely positioned downstream from the rear end of the fiber bundle being spun. The leading ends of the bundles merge and are sent from the joint portion 22 to the twist-preventing portion 23.

  (4) The delivery roller pair 47 functioning as the twist preventing portion 23 has a function of conveying the fiber bundle (the first roving yarn S1 or the second roving yarn S2) sent out from the front roller 25, and therefore, the joining portion 22. However, the fiber bundle is transported to the twist-preventing portion 23 without any trouble even if it does not have a transport function.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. In this embodiment, the configuration of the joint portion 22 is different from that of the first embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 6 and 7, the joining unit 50 includes a belt conveyor 51 as a transport unit that transports the fiber bundle (the first roving yarn S <b> 1 and the second roving yarn S <b> 2). The belt conveyor 51 includes a rotation shaft 52, and a belt 53 is wound around the rotation shaft 52 and a driven shaft, and the upper surface of the belt 53 has an inclination similar to the inclination of the common tangent line between the front roller 25 and the delivery roller pair 47. The fiber bundle sent out from the front roller 25 is conveyed to the delivery roller pair 47. The rotary shaft 52 is rotationally driven from the front bottom roller 25a via a rotation transmission mechanism (not shown).

  Above the belt conveyor 51, when the raw material fibers are switched, the first coarse yarn S1 and the second coarse yarn S2 transferred by the belt conveyor 51 toward the anti-twisting portion 23 are engaged to bring them closer together. A guide portion 54 is provided for guiding the above. As shown in FIG. 7, the guide portion 54 includes two guide plates 54a, and is formed such that the distance between the two guide plates 54a is wider toward the upstream side and narrower toward the downstream side. The distance between the upstream ends of both guide plates 54a is set to be larger than the maximum distance between the two rovings S1 and S2 fed from the front roller 25.

  The belt conveyor 51 moves the two fiber bundles (the first roving yarn S1 and the second roving yarn S2) before being subjected to the twisting merged at the joining portion 50 toward the anti-twisting portion 23 (delivery roller pair 47). Send it out. Therefore, the two fiber bundles that have joined together and are not yet twisted move (run) in a stable state until they pass through the twist-preventing portion 23 and are twisted.

According to this embodiment, in addition to the same effects as (1) and (3) of the first embodiment, the following effects can be obtained.
(5) The joining unit 50 includes a transport unit (belt conveyor 51) that transports the fiber bundle. And since the conveyance part sends out the two fiber bundles before receiving the twisting joined at the joining part 50 toward the anti-twisting part 23, the two fiber bundles before joining and receiving the twisting are twisted. It can move (run) in a stable state until it is passed through the stopper 23 and twisted.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS.
In this embodiment, the configuration of the delivery roller pair is different from those of the first and second embodiments. Moreover, the junction part 50 differs from 2nd Embodiment by the point which is provided with the belt conveyor 51 as a conveyance part, without providing the guide part 54 from the structure of 2nd Embodiment. The same parts as those of the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 8 and 9, the delivery roller pair 55 serving as a twist-preventing portion extends in a direction in which the axial direction intersects the axial direction of the roller of the draft portion 21. According to this configuration, the delivery roller pair 55 applies a force toward a direction in which the plurality of fiber bundles (the first roving yarn S1 and the second roving yarn S2) sent out from the front roller 25 of the draft portion 21 approach each other. It acts to add and promotes the merging of fiber bundles.

  At the time of switching from the spinning state using the first roving yarn S1 as the raw material fiber to the spinning state using the second roving yarn S2 as the raw material fiber, after the start of the supply of the second roving yarn S2, the tip thereof is a delivery roller pair. When contacting the surface of one of the rollers 55, the second roving yarn S2 applies a force from the surface of the delivery roller pair 55 so that the tip portion S2a approaches the rear end portion S1a of the first roving S1 being spun. receive. Therefore, the leading end S2a of the second roving yarn S2 is guided to a position where it joins with the rear end S1a of the first roving S1 being spun, and the leading end S2a of the second roving yarn S2; The first coarse yarn S1 passes through the delivery roller pair 55 in a state of joining (joining) with the rear end S1a of the first roving S1.

According to this embodiment, in addition to the same effects as (1), (3) of the first embodiment and (5) of the second embodiment, the following effects can be obtained.
(6) The delivery roller pair 55 extends in a direction in which the axial direction intersects the axial direction of the rollers of the draft unit 21. According to this configuration, the delivery roller pair 55 acts so as to apply a force in a direction approaching each other to the plurality of fiber bundles (the first roving yarn S1 and the second roving yarn S2) sent out from the draft portion 21. Then, the merging of the fiber bundles is promoted. As a result, even if there is no guide part 54, the joining (joining) of the front-end | tip part of the fiber bundle which starts spinning is smoothly performed to the rear-end part of the fiber bundle being spun. Therefore, the delivery roller pair 55 also functions as a joint portion.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIGS. In this embodiment, the configuration of the joint is different from those of the first to third embodiments. The same parts as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 10, a suction pipe 56 is provided between the front roller 25 and the delivery roller pair 47 so as to extend in parallel with the axial direction of the front roller 25. The suction pipe 56 is formed in a substantially triangular cross section, one side of the triangle faces the passage path of the fiber bundle being spun from the front roller 25 to the delivery roller pair 47, and the other two sides are below the passage path. It is provided in the position. A suction slit 57 is formed in the suction pipe 56 at a location facing the passage path of the fiber bundle. A driving roller 58 is provided below the suction pipe 56.

  An endless conveyance belt 59 is wound around the surface of the suction pipe 56 where the suction slit 57 is formed and the drive roller 58. The drive roller 58 is rotationally driven in the counterclockwise direction of FIG. The transport belt 59 is driven so as to move from the front roller 25 side toward the delivery roller pair 47 side on the surface where the suction slit 57 of the suction pipe 56 is formed as the drive roller 58 rotates.

  As shown in FIG. 11, the suction slit 57 is formed to be inclined with respect to the traveling direction of the fiber bundle (up and down direction in FIG. 11) on the upstream side and the downstream side of the suction slit 57. In this embodiment, the suction slit 57 is formed so as to incline to the right when viewed from the upstream side in the fiber bundle movement direction (upper side in FIG. 11).

  The suction slit 57 is formed such that the width W1 of the upstream end edge 57a is larger than the width W2 of the downstream end edge 57b, and the side edge on the outer side in the inclined direction (the right side in FIG. 11) of both side edges in the width direction of the suction slit 57 Constitutes a guide edge 60 for converging the fiber bundle. The guide edge 60 is formed so that the upstream portion 60a and the downstream portion 60b that extend linearly are continuous, and the inclination of the upstream portion 60a is larger than the inclination of the downstream portion 60b. In addition, the connection part of the upstream part 60a and the downstream part 60b is smoothly connected with the curve. The other side edge 61 of the side edges is formed in a shape that partially intersects a virtual line L1 that passes through the downstream end 60dp of the guide edge 60 and is parallel to the traveling direction of the fiber bundle.

  In this embodiment, the fiber bundle is sent out from the front roller 25 in a range corresponding to the width W1 of the upstream end edge 57a of the suction slit 57. Then, after the end portion of the fiber bundle passes through the position corresponding to the upstream end edge 57a of the suction slit 57, the width W2 of the downstream end edge 57b of the suction slit 57 is finally obtained by the action of the suction airflow of the suction slit 57. It passes through the corresponding position. Accordingly, the fiber bundle being spun is transported by the conveyor belt 59 above the suction slit 57 in a state of passing through a position corresponding to the width W2 of the downstream end edge 57b of the suction slit 57.

  Therefore, for example, at the time of switching from the spinning state in which the first roving S1 is used as the raw material fiber to the spinning state in which the second roving S2 is the raw material fiber, the first roving S1 is the virtual of the suction slit 57. At a position away from the line L1, it passes through a position corresponding to the width W1 of the upstream end edge 57a of the suction slit 57, and the rear end S1a also moves along the guide edge 60 by the suction action of the suction slit 57.

  On the other hand, the supply of the second roving S2, which has been started, is started at a position near the virtual line L1 of the suction slit 57 and at a position corresponding to the width W1 of the upstream edge 57a of the suction slit 57. When the leading end S2a of the second roving S2 passes through the suction slit 57, the leading end S2a also moves to the guide edge 60 due to the suction action of the suction slit 57 as the suction slit 57 moves downstream. It will be in a state to go along.

  Therefore, in the state where the fiber bundle being spun (first roving S1) moves through the suction slit 57, the end of the fiber bundle spun instead (the tip S2a of the second roving S2). ) Moves through the upstream edge 57a of the suction slit 57 and then moves closer to the fiber bundle being spun by the negative pressure of the suction slit 57. Then, the end of the fiber bundle spun instead (the front end S2a of the second roving S2) is spliced and joined to the end of the fiber bundle (the rear end S1a of the first roving S1). After that, it passes through the twist-preventing portion 23 and is subjected to twisting.

The embodiment is not limited to the above, and may be embodied as follows, for example.
In the fourth embodiment, the shape of the suction slit 57 constituting the joint is not limited to the shape shown in FIG. For example, the side edge 61 is not limited to a straight line, and the side edge 61 is formed by two straight lines of an upstream portion and a downstream portion, and the downstream portion extends in parallel with the downstream portion 60b of the guide edge 60 and extends to an imaginary line L1. And the upstream portion may have a shape extending in parallel with the virtual line L1. Further, the downstream part of the side edge 61 has a smaller inclination than the downstream part 60b of the guide edge 60, and the upstream part of the side edge 61 has a smaller inclination than the upstream part 60a of the guide edge 60 and intersects the virtual line L1. May be.

  ○ As shown in FIG. 12A, the suction slit 57 has a side edge 61 that is not straight, a downstream portion 61 b that extends in the same direction as the downstream portion 60 b of the guide edge 60, and an upstream portion 60 a of the guide edge 60. It may be formed by two straight lines with the upstream portion 61a extending in the opposite direction. Both the upstream part 61a and the downstream part 61b intersect with the virtual line L1, and the upper end of the downstream part 61b exists on the guide edge 60 side from the virtual line L1. Further, the upstream end edge 57a of the suction slit 57 intersects the virtual line L1, and the width W1 of the upstream end edge 57a is wider than the suction slit 57 where the upstream end edge 57a does not intersect the virtual line L1.

  In this case, when the supply fiber bundle is switched, the tip of the fiber bundle that has been supplied moves to the range of the width W1 of the upstream end edge 57a of the suction slit 57, and the tip is out of the range of the width W1. When reaching the upper end side of the side edge 61 from the position corresponding to the upper end of the downstream part 61b of the side edge 61, the tip moves along the upstream part 61a. And during the movement, approaching the rear end of the fiber bundle that was cut when the supply was stopped, and the rear end of the fiber bundle that was cut after the supply was stopped Are joined and joined.

  Further, when the supply fiber bundle is switched, the tip of the fiber bundle that has been supplied moves to the range of the width W1 of the upstream end edge 57a of the suction slit 57, and the tip is out of the range of the width W1. When reaching the upper end side of the guide edge 60 from a position corresponding to the upper end of the downstream portion 61 b of the side edge 61, the tip moves along the upstream portion 60 a and the downstream portion 60 b of the guide edge 60. Then, when approaching the downstream end 60dp of the downstream portion 60b during the movement along the downstream portion 60b, the tip of the fiber bundle that has approached the rear end portion of the fiber bundle that has been stopped and cut and has been fed is started. And the rear end of the fiber bundle that has been cut when the supply is stopped are joined and joined.

  Like the suction slit 57 shown in FIG. 12A, the downstream portion 61 b whose side edge 61 extends in the same direction as the downstream portion 60 b of the guide edge 60 and the upstream portion that extends in the opposite direction to the upstream portion 60 a of the guide edge 60. In the suction slit 57 having a shape having 61a, the downstream portion 61b and the upstream portion 61a may each be constituted by two straight lines. Even if the two straight lines constituting the downstream portion 61b and the upstream portion 61a are formed so that the slope of the upper straight line is larger than the slope of the lower straight line, the slope of the upper straight line is greater than the slope of the lower straight line. It may be formed small.

  As shown in FIG. 12B, the suction slit 57 may have a y-shape with the upstream side branched in two. Also in the suction slit 57 having such a shape, the guide edge 60 may be configured by a plurality of straight lines, and the upstream portion 61a and the downstream portion 61b of the side edge 61 may be configured by a plurality of straight lines.

  ○ The shape of the suction slit 57 is not limited to the shape of the above embodiment, and is not limited to the suction slit 57 in which the upstream side branches into two if the width W1 of the upstream end edge 57a is larger than the width W2 of the downstream end edge 57b. The guide edge 60 may be formed in a straight line.

  The shape of the suction slit 57 is not limited to a shape formed only by a straight line, and at least a part thereof may be formed by a curve. For example, at least a part of the guide edge 60 is formed with a curve, at least a part of the side edge 61 is formed with a curve, or at least a part of the upstream edge 57a and the downstream edge 57b of the suction slit 57 is a curve. It may be formed.

  The suction slit 57 is formed in a shape symmetrical to each suction slit 57 in FIGS. 11 and 12A and 12B, for example, a shape in which the guide edge 60 is located on the left side and the side edge 61 is located on the right side in FIG. May be.

  As shown in FIG. 13, the bottom roller 47 a of the delivery roller pair 47 that constitutes the anti-twisting portion 23 may be shared with the front bottom roller 25 a that constitutes the draft portion 21. The diameter of the front bottom roller 25a is set so that the guide portion 64 as the joint portion 22 can be disposed between the front top roller 25b and the top roller 47b of the delivery roller pair 47. The guide part 64 is configured to narrow the interval between the two fiber bundles fed from the front bottom roller 25a and the front top roller 25b, like the guide part of the second embodiment. The delivery roller pair 47 shares the draft portion 21 and the front bottom roller 25a, but the top roller 47b is not a draft roller.

  O The conveyance part which conveys a fiber bundle in the junction part 50 may use not only the belt conveyor 51 but the bottom apron of an apron apparatus. In the case of the apron device, the endless apron is wound between the driving roller and the apron cradle, so that the transport unit can guide and transport the fiber bundle to the vicinity of the twist-preventing unit 23 as compared with the belt conveyor 51. The bottom apron may use a mesh apron.

The transport unit that transports the fiber bundle in the joint unit 50 is not limited to the configuration using the belt 53, the endless tape, or the apron, and may include one or a plurality of rollers.
As a driving source of the conveyance unit, not only the front bottom roller 25a, but also, for example, the bottom roller 47a of the delivery roller pair 47, or the front top roller 25b or the top roller 47b may be used. Further, an independent drive source may be provided as a drive source for the transport unit.

  ○ When a gas is used to join a plurality of fiber bundles while the plurality of fiber bundles sent out from the draft unit 21 move to the anti-twisting unit 23, a gas passage is formed in the rollers and belts constituting the transport unit May be.

  ○ As in the second embodiment, as a joint portion, when the fiber raw material is switched, the first coarse yarn S1 and the second coarse yarn S2 fed from the front roller 25 to the delivery roller pair 47 are engaged to bring them closer together. In the joining part 50 provided with the guide part 54 that guides in this way, an ultrasonic diaphragm may be provided instead of the belt conveyor 51. In this case, since both the roving yarns S1 and S2 sent out from the front roller 25 move toward the anti-twisting portion 23 on the ultrasonic vibration plate, the contact resistance is very small on the ultrasonic vibration plate. Is moved toward the anti-twisting portion 23 by the pushing force of the front roller 25.

The guide plate 54a of the guide portion 54 may be configured with an ultrasonic vibration plate. In this case, it is easy to guide the two fiber bundles that are fed away from the front roller 25 in the approaching direction.
The special yarn manufacturing apparatus 10 is not limited to the configuration in which the yarn Y is spun by drafting the roving yarns S1 and S2 supplied from the roving yarn windings 13a and 13b as the raw fiber bundle, and the sliver is used as the raw fiber bundle. It may be.

  ○ The special yarn manufacturing apparatus 10 continuously supplies one of the two fiber bundles, and the yarn in which the other fiber bundle is mixed and spun exists at a predetermined interval. May be spun.

  (Circle) the fiber bundle supply part 11 may be the structure which can supply not only two fiber bundles but three or more fiber bundles independently. For example, three fiber bundles (coarse yarns) can be supplied independently, and the three fiber bundles can be produced in any order in a predetermined length, or two different yarns can be produced. It is good also as a special thread | yarn manufacturing apparatus which manufactures the continuous thread | yarn with the predetermined length preset in the arbitrary order.

  L1 ... imaginary line, S1a ... rear end, S2a ... tip, 10 ... special yarn manufacturing device, 18 ... twisted portion, 22, 50 ... joined portion, 23 ... anti-twisted portion, 55 ... delivery roller functioning as joined portion A pair of delivery rollers as 51, a belt conveyor as a conveying unit, 57 as a suction slit, 60 as a guide edge, 60dp as a downstream end, and 61 as a side edge on the other side.

Claims (5)

A special yarn manufacturing apparatus in a spinning machine having a plurality of apron draft sections each including a front roller and a pair of aprons capable of independently supplying a plurality of fiber bundles provided behind the front roller to the front roller. ,
Bonding for bonding the tip portion of the fiber bundle fed from the apron pair starts operating after the rear end portion and the switching of the fiber bundle which has been fed from the apron pair was operating before switching downstream than the front roller And
A twist-stop portion that feeds out the fiber bundle while grasping the fiber bundle downstream of the joint portion so as to prevent twist from propagating to the fiber bundle at the joint portion. Special yarn production equipment for spinning machines.   The special yarn manufacturing apparatus in a spinning machine according to claim 1, wherein the joining portion includes a conveyance unit that conveys the fiber bundle.   The apparatus for producing special yarn in a spinning machine according to claim 2, wherein the transport unit is a mesh apron.   The special yarn manufacturing apparatus for a spinning machine according to claim 2, wherein the joining portion is a delivery roller whose axial direction extends in a direction intersecting with an axial direction of a roller constituting the apron draft portion.   The joining portion is a suction slit, and the suction slit is formed in a state inclined with respect to the traveling direction of the fiber bundle on the upstream side and the downstream side of the suction slit, and on both side edges in the width direction of the suction slit. A part of the other side edge of the both side edges intersects with an imaginary line passing through the downstream end of the guide edge which is one of the side edges and parallel to the traveling direction of the fiber bundle. The special yarn manufacturing apparatus in the spinning machine according to claim 2.