JP2012127009A - Air spinning device and spinning machine provided with air spinning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air spinning device which reduces a variation in a configuration of a spinning chamber by enhancing accuracy to install a fiber guide and a nozzle block to a precise position, and can easily change the fiber guide and the nozzle block to spin depending on fiber characteristics.SOLUTION: An air spinning device 6 comprises: a fiber guide 61; a nozzle block 63; and a spindle 62, and further has a nozzle holder 64 which supports the nozzle block 63 in a state of abutting on the nozzle block 63 and a nozzle cap 66 which fixes the fiber guide 61 and the nozzle block 63 to the nozzle holder 64. The nozzle cap 66 is attached to the nozzle holder in a state that the nozzle cap 66 and the nozzle holder 64 are directly abutted.

Description

  The present invention relates to a pneumatic spinning device and a technology of a spinning machine including the pneumatic spinning device.

  2. Description of the Related Art Conventionally, an air spinning apparatus that manufactures spun yarn by twisting a fiber bundle using a swirling airflow is known. The pneumatic spinning device generates a swirling airflow by supplying air to the spinning chamber, and manufactures spun yarn by swirling each fiber constituting the fiber bundle (for example, Patent Document 1 and Patent Document 2).

  However, the air spinning device has a problem that it is easily affected by the shape of the spinning chamber because the fiber is swirled using the swirling airflow. In other words, the pneumatic spinning device has a problem that when the shape of the spinning chamber changes due to the shift of the mounting position of the fiber guide and nozzle block constituting the spinning chamber, the twist strength of the produced spun yarn differs. It was. Accordingly, there has been a demand for an air spinning device that can improve the accuracy of the attachment position of the fiber guide and the nozzle block and reduce the variation in the shape of the spinning chamber.

  Furthermore, the air spinning device has a problem that it is susceptible to the influence of fiber characteristics because the fiber is swirled using a swirling airflow. That is, the pneumatic spinning device has a problem that the strength of twist of the produced spun yarn differs due to the fiber characteristics such as the average fiber length. Therefore, there has been a demand for an air spinning device that can easily replace the fiber guide and the nozzle block and enables spinning according to the fiber characteristics.

JP 2003-193337 A Japanese Utility Model Publication No. 4-131661

  The present invention reduces the variation in the spinning chamber shape by improving the accuracy of the fiber guide and nozzle block mounting position, and allows the fiber guide and nozzle block to be easily exchanged to enable spinning according to the fiber characteristics. The object is to provide a spinning device. Furthermore, it aims at providing the spinning machine provided with the said air spinning apparatus.

  Next, means for solving this problem will be described.

  The first invention relates to an air spinning device including a fiber guide, a nozzle block, and a spindle. The pneumatic spinning device includes a nozzle holder and a nozzle cap. The nozzle holder supports the nozzle block while being in contact with the nozzle block. The nozzle cap fixes the fiber guide and the nozzle block to the nozzle holder. At this time, the nozzle cap is attached in a state where the nozzle cap and the nozzle holder are in direct contact with each other.

  The second invention relates to the pneumatic spinning device according to the first invention. The nozzle holder includes a first nozzle holder part and a second nozzle holder part. The first nozzle holder portion supports the nozzle block and is attached with a nozzle cap. The second nozzle holder part supports the first nozzle holder part. At this time, the first nozzle holder part is detachably attached to the second nozzle holder part.

  The third invention relates to an air spinning device according to the second invention. The first nozzle holder portion is provided with a first air guide path for guiding air to the spinning chamber. The second nozzle holder part is provided with a second air guide path for guiding the air pressure-fed from the air supply source. When the first nozzle holder part is attached to the second nozzle holder part, the first air guide path and the second air guide path communicate with each other.

  The fourth invention relates to an air spinning device including a fiber guide, a nozzle block, and a spindle. The pneumatic spinning device includes a spindle holder and a spindle fixing member. The spindle holder supports the spindle. The spindle fixing member fixes the spindle to the spindle holder with one touch.

  The fifth invention relates to an air spinning device according to the fourth invention. The spindle fixing member is screwed and attached to the spindle holder in contact with the spindle.

  The sixth invention relates to an air spinning device according to the fifth invention. The spindle holder is provided with a concave portion or a convex portion. The spindle fixing member is provided with a convex portion or a concave portion. When the spindle fixing member is screwed into the spindle holder, the convex part and the concave part mesh with each other so that the spindle is hooked on the spindle holder.

  A seventh invention relates to an air spinning device according to any one of the first to sixth inventions. The pneumatic spinning device includes a support portion, a stopper, and an urging member. The support portion supports the nozzle holder so as to be movable in a direction in which the nozzle holder approaches or separates from a wall surface arranged to face the nozzle holder. The stopper is provided on the nozzle holder, and contacts the wall surface to position the nozzle holder. The biasing member biases the nozzle holder in a direction close to the wall surface.

  The eighth invention relates to an air spinning device according to the seventh invention. The nozzle holder is provided with a plurality of stoppers having different shapes. Among the plurality of stoppers, the stopper that contacts the wall surface can be switched.

  A ninth invention relates to a spinning machine including the pneumatic spinning device according to any one of the first to eighth aspects. The spinning machine winds up a spun yarn spun by an air spinning device to create a package.

  As effects of the present invention, the following effects can be obtained.

  According to the first invention, since the nozzle block is fixed in a state of being in contact with the nozzle holder by the nozzle cap attached in a state of being in direct contact with the nozzle holder, the accuracy of the mounting position of the nozzle block is improved. As a result, the accuracy of the attachment position of the fiber guide that is fixed in combination with the nozzle block is also improved. Thereby, the variation in the shape of the spinning chamber is reduced, and the quality of the spun yarn can be improved. Further, since the fiber guide and the nozzle block can be fixed to the nozzle holder with a simple structure, the cost can be reduced.

  According to the second invention, since the first nozzle holder portion to which the fiber guide and the nozzle block are fixed becomes detachable, the fiber guide and the nozzle block can be easily exchanged. Thereby, spinning according to the fiber characteristics can be performed, and the quality of the spun yarn can be improved.

  According to the third invention, since the first nozzle holder part can be detached without removing the pipe extending from the air supply source, the replacement of the fiber guide and the nozzle block is further facilitated. Thereby, spinning according to the fiber characteristics can be performed, and the quality of the spun yarn can be improved. In addition, since it is not necessary to remove the pipe extended from the air supply source, it is possible to prevent foreign matter from entering the air guide path, and it is possible to improve the quality of the spun yarn.

  According to the fourth invention, since the spindle can be fixed to the spindle holder with a simple structure, the cost can be reduced.

  According to the fifth aspect, since the spindle can be fixed to the spindle holder only by screwing the spindle fixing member, the spindle can be easily replaced. Thereby, spinning according to the fiber characteristics can be performed, and the quality of the spun yarn can be improved.

  According to the sixth aspect of the present invention, when the spindle fixing member is screwed until the convex portion and the concave portion are engaged, a predetermined tightening torque is obtained. Therefore, the work for fixing the spindle is simplified and the spindle can be replaced more easily. It becomes. Thereby, spinning according to the fiber characteristics can be performed, and the quality of the spun yarn can be improved.

  According to the seventh aspect, since the nozzle holder to which the urging force acts is locked by the stopper, rattling is suppressed and the accuracy of positioning of the nozzle holder is improved. As a result, the accuracy of the position of the fiber guide or nozzle block fixed to the nozzle holder with respect to the spindle is improved. Thereby, the variation in the shape of the spinning chamber is reduced, and the quality of the spun yarn can be improved.

  According to the eighth invention, since the plurality of stoppers having different shapes are provided, the locking position of the nozzle holder can be changed by switching to any one of the stoppers. Thereby, spinning according to the fiber characteristics can be performed, and the quality of the spun yarn can be improved.

  According to the ninth aspect, a package can be created with the high-quality spun yarn Y, and the cost can be reduced.

The figure which shows the structure of the spinning unit. The figure which shows the pneumatic spinning apparatus 6 provided in the spinning unit 1. FIG. The figure which shows the pneumatic spinning apparatus 6 which is not provided with the needle 61n. The figure which shows the tension stabilizer 8 provided in the spinning unit 1. FIG. The figure which shows the fixing method and removal | desorption method of fiber guide 61, the nozzle block 63, etc. The figure which shows the structure which guides the air pumped from the air supply source AB to the spinning chamber SC. The figure which shows the fixing method of the spindle 62. FIG. FIG. 10 is another view showing a method of fixing the spindle 62. The figure which shows the structure where the nozzle holder 64 is latched by the stopper 64s. The figure which shows the structure which changes the latching position of the nozzle holder 64 by switching the stopper 64s. The figure which shows the structure which changes the latching position of the nozzle holder 64 by expanding and contracting the stopper 64s. The figure which shows the fixing method of the fiber guide 61 and the nozzle block 63 in the conventional pneumatic spinning apparatus.

  First, the configuration of the spinning unit 1 will be described in detail with reference to FIG.

  The spinning unit 1 is a spinning machine that produces a package P by producing a spun yarn Y from a fiber bundle (hereinafter referred to as “sliver”) F. The spinning unit 1 includes a sliver supply unit 4, a draft device 5, an air spinning device 6, a yarn defect detecting device 7, and tension stabilization, arranged in the following order along the feeding direction of the sliver F and the spun yarn Y. It comprises a device 8 and a winding device 9.

  The sliver supply unit 4 supplies sliver F, which is a raw material of the spun yarn Y, to the draft device 5. The sliver supply unit 4 mainly includes a sliver case 41 and a sliver guide (not shown). The sliver F stored in the sliver case 41 is guided by the sliver guide and supplied to the draft device 5.

  The draft device 5 drafts the sliver F to make the thickness of the sliver F uniform. The draft device 5 includes four sets of draft rollers, which are a back roller pair 51, a third roller pair 52, a middle roller pair 53, and a front roller pair 54, arranged in the following order along the feeding direction of the sliver F. Composed of pairs.

  The four pairs of draft rollers 51, 52, 53, and 54 are respectively composed of bottom rollers 51A, 52A, 53A, and 54A, and top rollers 51B, 52B, 53B, and 54B. Further, apron bands 53C and 53C made of leather or synthetic rubber are wound around the bottom roller 53A and the top roller 53B constituting the middle roller pair 53.

  The bottom rollers 51A, 52A, 53A, and 54A are rotated in the same direction by a driving device (not shown). The top rollers 51B, 52B, 53B, and 54B are driven by the rotation of the bottom rollers 51A, 52A, 53A, and 54A, and are rotated in the same direction. Further, each of the draft roller pairs 51, 52, 53, and 54 is set so that the rotation speed is sequentially increased along the feeding direction of the sliver F.

  With such a configuration, the sliver F sandwiched between the draft roller pairs 51, 52, 53, and 54 increases in feeding speed each time it passes through each of the draft roller pairs 51, 52, 53, and 54, and the adjacent drafts. It will be drafted between the roller pair. In this manner, the draft device 5 can make the thickness of the sliver F uniform by drafting the sliver F.

  The pneumatic spinning device 6 produces the spun yarn Y by twisting the drafted sliver F. As shown in FIG. 2, the pneumatic spinning device 6 mainly includes a fiber guide 61, a spindle 62, and a nozzle block 63. In addition, the black arrow shown in the drawing indicates the feeding direction of the sliver F and the spun yarn Y. White arrows shown in the figure indicate the flow direction of the supplied air.

  The fiber guide 61 is a member constituting a part of the spinning chamber SC. The fiber guide 61 guides the sliver F drafted by the draft device 5 to the spinning chamber SC. Specifically, the fiber guide 61 guides the sliver F into the spinning chamber SC through a fiber introduction path 61g communicated with the spinning chamber SC. Further, the fiber guide 61 is provided with a needle 61n for guiding the sliver F along the sliver F so as to protrude from the spinning chamber SC.

  The spindle 62 is a member constituting a part of the spinning chamber SC. The spindle 62 guides the sliver F twisted in the spinning chamber SC, that is, the spun yarn Y to the yarn defect detecting device 7. More specifically, the spindle 62 guides the spun yarn Y to the yarn defect detecting device 7 disposed on the downstream side in the feed direction by the fiber passage 62s communicated with the spinning chamber SC.

  The nozzle block 63 is a member constituting a part of the spinning chamber SC. The nozzle block 63 guides air fed from an air supply source AB described later to the spinning chamber SC. More specifically, the nozzle block 63 guides air into the spinning chamber SC through an air hole 63a communicated with the spinning chamber SC. The air holes 63a provided in the nozzle block 63 communicate with each other so that the air ejected from the air holes 63a flows in the same direction around the central axis of the spinning chamber SC. A whirling air flow is generated inside (see white arrow in the figure).

  Here, the spinning chamber SC will be described in more detail. The spinning chamber SC is a space surrounded by the fiber guide 61, the spindle 62, and the nozzle block 63. Specifically, the spinning chamber SC has a substantially conical spindle 62 inserted from one side with respect to a substantially conical through hole 63p provided in the nozzle block 63, and a fiber guide 61 attached to the other side. It is a space surrounded by.

  The spinning chamber SC is divided into a space SC1 formed between the fiber guide 61 and the spindle 62, and a space SC2 formed between the spindle 62 and the nozzle block 63. In the space SC1, each fiber constituting the sliver F has its rear end portion inverted by a swirling airflow (see the two-dot chain line in the figure). In the space SC2, the rear end portion of each inverted fiber is swirled by the swirling airflow (see the two-dot chain line in the figure).

  With such a configuration, the sliver F guided along the needle 61n is wound around the fibers in the center portion one after another by turning the rear end portion of each fiber constituting the sliver F. In this manner, the pneumatic spinning device 6 can twist the sliver F using the swirling airflow, and produces the spun yarn Y.

  As shown in FIG. 3, the pneumatic spinning device 6 may have a configuration in which the needle 61 n is not provided in the fiber guide 61. In this case, the fiber guide 61 realizes the function of the needle 61 n by the edge of the downstream end of the fiber guide 61. Even if the needle 61n is not provided in the fiber guide 61, there is no difference in the object and effect of the present invention and it belongs to the technical scope of the present invention.

  The yarn defect detection device 7 detects a defect portion generated in the spun yarn Y. The yarn defect detecting device 7 mainly includes a light source unit (not shown), a light receiving unit (not shown), and a casing (not shown).

  The light source unit is a semiconductor element that emits light by applying a voltage in the forward direction, that is, a light emitting diode. The light source unit is disposed so that the spun yarn Y can be irradiated with light from the light source unit.

  The light receiving unit is a semiconductor element that enables current control by an optical signal, that is, a phototransistor. The light receiving unit is disposed so as to receive light emitted from the light source unit.

  The casing is a member that holds the light source unit and the light receiving unit at predetermined positions. The casing is provided with a yarn passage through which the spun yarn Y passes. The casing holds the light source unit and the light receiving unit so as to face each other with the spun yarn Y interposed therebetween.

  With such a configuration, the amount of light received by the light receiving unit is a value excluding the amount of light shielded by the spun yarn Y from the light emitted from the light source unit to the spun yarn Y. In this way, the yarn defect detection device 7 can measure the amount of received light that changes according to the yarn thickness, and can detect the defect portion generated in the spun yarn Y.

  The defect portion that can be detected by the yarn defect detection device 7 includes not only an abnormality in which a part of the spun yarn Y is too thick or too thin, but also a case where foreign matter such as polypropylene intervenes in the spun yarn Y. Further, the yarn defect detecting device 7 may employ a capacitance type sensor in addition to the optical sensor as described above.

  The tension stabilizing device 8 keeps the tension applied to the spun yarn Y moderately stable. As shown in FIG. 4, the tension stabilizing device 8 mainly includes a roller 81, a power unit 82, and a unraveling member 83. In addition, the arrow shown in the figure has shown the feed direction of the spun yarn Y. FIG.

  The roller 81 is a substantially cylindrical rotating body that draws the spun yarn Y from the air spinning device 6 and winds the spun yarn Y. The roller 81 is attached to the rotating shaft 82 a of the power unit 82 and is rotated by the power unit 82. Then, the spun yarn Y drawn from the pneumatic spinning device 6 is wound around the outer peripheral surface of the roller 81.

  The power unit 82 is an electric motor that is driven by being supplied with electric power. The power unit 82 rotates the roller 81 and keeps the rotation speed of the roller 81 constant at a predetermined value. Thereby, the winding speed of the spun yarn Y wound around the roller 81 can be kept constant.

  The unwinding member 83 is a yarn hooking member that assists in unwinding the spun yarn Y wound by rotating integrally or independently with the roller 81. One end of the unwinding member 83 is attached to the rotation shaft 84 of the roller 81. The other end portion of the unwinding member 83 is formed to be curved toward the outer peripheral surface of the roller 81. The unwinding member 83 enables the spun yarn Y to be unwound from the roller 81 by the spun yarn Y being hung on the curved portion. In addition, a permanent magnet that generates a resistance force against the rotation of the unwinding member 83 is disposed at the base of the rotating shaft 84 to which the unwinding member 83 is attached.

  With such a configuration, the unwinding member 83 has a low tension applied to the spun yarn Y, and rotates together with the roller 81 when defeating the above-described resistance force. On the other hand, the unwinding member 83 has a high tension applied to the spun yarn Y, and rotates independently from the roller 81 when the resistance force described above is overcome. The tension stabilizing device 8 can rotate the unwinding member 83 integrally or independently with the roller 81 in accordance with the tension applied to the spun yarn Y, and can adjust the unwinding speed of the spun yarn Y. . In this way, the tension stabilizing device 8 keeps the tension applied to the spun yarn Y moderately stable.

  As described above, the tension stabilizing device 8 has a role of pulling the spun yarn Y from the pneumatic spinning device 6. However, for example, a delivery roller and a nip roller may be arranged on the downstream side of the pneumatic spinning device 6 and the spun yarn Y may be pulled out by the delivery roller and the nip roller. Furthermore, the tension stabilizing device 8 may be disposed downstream of the delivery roller and the nip roller, and the spun yarn Y may be wound and stored. Alternatively, the tension stabilizing device 8 may be omitted and the spun yarn Y may be pulled out by the winding device 9.

  The winding device 9 creates a substantially cylindrical (cheese-shaped) package P by winding the spun yarn Y. The winding device 9 is mainly composed of a driving roller 91 and a cradle (not shown). The cradle holds the bobbin 92 rotatably.

  The driving roller 91 is a rotating body that rotates the bobbin 92 and the package P by rotation. The drive roller 91 adjusts the rotational speed according to the change in the outer diameter of the package P, and maintains the peripheral speed of the package P constant. Thereby, the winding speed of the spun yarn Y wound around the bobbin 92 can be kept constant.

  The bobbin 92 is a substantially cylindrical rotating body that winds the spun yarn Y by rotating. The bobbin 92 is driven and rotated by a driving roller 91 that rotates while being in contact with the outer peripheral surface of the bobbin 92 or the package P. Since the winding device 9 traverses the spun yarn Y by a traversing device (not shown), it prevents the spun yarn Y from being biased in the package P.

  With such a configuration, the spun yarn Y guided to the bobbin 92 is wound around the outer peripheral surface of the bobbin 92 without being biased. In this way, the winding device 9 makes it possible to create a package P having a substantially cylindrical shape (cheese shape). In addition to the substantially cylindrical (cheese shape) package P as shown in FIG. 1, the winding device 9 can create a substantially conical (cone shape) package P, for example.

  Next, a method for fixing the fiber guide 161 and the nozzle block 163 of the conventional pneumatic spinning device 106 will be described with reference to FIG. FIG. 12 shows a side view of a conventional pneumatic spinning device 106.

  The nozzle block 163 is supported in a state of being fitted into the through hole 164h of the nozzle holder 164 and the through hole 165h of the spacer 165. Specifically, the nozzle block 163 is inserted into the through hole 164h of the nozzle holder 164 and the through hole 165h of the spacer 165, and is supported in a state where the hooking surface 163p of the nozzle block 163 and the spacer 165 are in contact with each other. Has been.

  The fiber guide 161 is combined with the upper end surface (upstream end surface in the fiber bundle traveling direction) of the nozzle block 163. More specifically, the fiber guide 161 is supported in a state where the lower end portion (end surface on the downstream side in the fiber bundle traveling direction) of the fiber guide 161 is combined with the concave portion on the upper end surface of the nozzle block 163.

  The fiber guide 161 and the nozzle block 163 are fixed to the nozzle holder 164 via the spacer 165 by the nozzle cap 166 in a state of being combined with each other. More specifically, the fiber guide 161 and the nozzle block 163 are fixed to the nozzle holder 164 together with the spacer 155 by a nozzle cap 166 having a claw on the fiber guide 161.

  Thus, in the conventional pneumatic spinning device 106, the fiber guide 161 and the nozzle block 163 are fixed on the spacer 165, and then the spacer 165 is fixed to the nozzle holder 164. This is because in the spinning unit 1, the pneumatic spinning device 106 and the front roller pair 54 are provided close to each other, and therefore, an operation for attaching the fiber guide 161 and the nozzle block 163 to the nozzle holder 164 is performed. Because it was difficult to do directly. Further, as in Patent Document 2, it is common that a common nozzle holder is provided for two adjacent air spinning devices 106, and the fiber guide 161 and the nozzle block 163 are attached to the air spinning device 106. Spacers 165 had to be used.

  Here, problems caused by the fixing method of the fiber guide 161 and the nozzle block 163 will be described.

  In the configuration of the conventional pneumatic spinning device 106 in which the spacer 165 is provided between the retaining surface 163p of the nozzle block 163 and the nozzle holder 164, the fiber guide 161 and the nozzle block 163 are attached by replacing the spacer 165. You can change the position. However, when the tolerances of the spacers 165 are accumulated in addition to the tolerances of the fiber guide 161, the nozzle block 163, and the nozzle cap 166, the accuracy of the attachment positions of the fiber guide 161 and the nozzle block 163 may be lowered.

  When the distance D between the fiber guide 161 and the spindle 162 is smaller than a predetermined value, the rear end portion of the fiber constituting the sliver F is difficult to reverse, and as a result, a spun yarn Y with a weak twist is manufactured. . More specifically, when the distance D between the fiber guide 161 and the spindle 162 becomes small, the rear end portion of the fiber constituting the sliver F is difficult to ride on the swirling airflow, so that the rear end portion of the fiber is reversed. Becomes difficult. Accordingly, the fibers constituting the sliver F cannot be sufficiently wound around the fibers in the center. As a result, a weakly twisted spun yarn (weakly twisted yarn) Y is produced.

  When the distance D between the fiber guide 161 and the spindle 162 is a predetermined value, the rear end portion of the fiber constituting the sliver F is easily reversed, and as a result, a spun yarn Y having a high twist is manufactured. More specifically, when the distance D between the fiber guide 161 and the spindle 162 is a predetermined value, the rear end portion of the fiber constituting the sliver F easily gets swirling airflow, so the rear end portion of the fiber is inverted. It becomes easy to make. Therefore, it is possible to sufficiently wrap the fiber swirling in the swirling airflow around the fiber in the center. As a result, a strongly twisted spun yarn (strongly twisted yarn) Y is produced.

  When the distance D between the fiber guide 161 and the spindle 162 becomes too large, both ends of the fiber constituting the sliver F are swung in the spinning chamber SC without being constrained by the fiber guide 161 or the spindle 162, and air spinning. The frequency of discharge to the outside of the device 106 increases. Thereby, the malfunction that a fiber loss increases arises. Further, since the volume of the spinning chamber SC increases, the amount of air for forming the swirling airflow in the spinning chamber SC also increases, and it is necessary to increase the size of the air supply source. As a result, there has been a problem that the spinning unit is enlarged.

  As described above, the air spinning device 106 has a problem that it is easily affected by the shape of the spinning chamber SC because the fiber is swirled using the swirling airflow. That is, when the spinning chamber SC shape changes due to the shift of the attachment position of the fiber guide 161 and the nozzle block 163 constituting the spinning chamber SC, the pneumatic spinning device 106 differs in the twist strength of the produced spun yarn Y. Had problems. There was also a problem that fiber loss increased. Accordingly, there has been a demand for an air spinning device 106 that can improve the accuracy of the attachment positions of the fiber guide 161 and the nozzle block 163 and reduce the variation in the shape of the spinning chamber SC.

  Next, a method for fixing the fiber guide 61 and the nozzle block 63 of the pneumatic spinning device 6 according to the embodiment of the present invention will be described with reference to FIG. FIG. 5 shows a side view of the pneumatic spinning device 6 according to the embodiment of the present invention.

  The nozzle block 63 is supported in a state of being fitted into the through hole 64 h of the nozzle holder 64. Specifically, the nozzle block 63 is fitted into the through hole 64h of the nozzle holder 64, and is supported in a state where the retaining surface 63p of the nozzle block 63 and the nozzle holder 64 are in contact with each other.

  The fiber guide 61 is combined with the upper end surface (upstream end surface in the fiber bundle traveling direction) of the nozzle block 63. More specifically, the fiber guide 61 is supported in a state where the lower end portion (downstream end surface in the fiber bundle traveling direction) of the fiber guide 61 is combined with the concave portion of the upper end surface of the nozzle block 63.

  The fiber guide 61 and the nozzle block 63 are fixed to the nozzle holder 64 by a nozzle cap 66 in a state of being combined with each other. More specifically, the fiber guide 61 and the nozzle block 63 are directly fixed to the nozzle holder 64 by a nozzle cap 66 having a claw on the fiber guide 61.

  With such a configuration, in order to fix the nozzle block 63 in a state where the hooking surface 63p of the nozzle block 63 and the nozzle holder 64 are in contact with each other by the nozzle cap 66 attached in a state of being in direct contact with the nozzle holder 64, The accuracy of the mounting position of the nozzle block 63 is improved. The accuracy of the attachment position of the fiber guide 61 fixed in the state combined with the nozzle block 63 is also improved. As a result, the variation in the shape of the spinning chamber SC is reduced, and the quality of the spun yarn Y can be improved. Further, since the fiber guide 61 and the nozzle block 63 can be fixed with a simple structure, the cost can be reduced.

  Further, in the configuration in which one positioning plate is provided for two adjacent pneumatic spinning devices 106 as in Patent Document 2, there is a restriction due to the positioning plate. Therefore, it is difficult to freely position the pneumatic spinning device 106 with respect to the draft device for each spinning unit. However, by fixing the fiber guide 61 and the nozzle block 63 to the nozzle holder 64 as in the present embodiment, the air spinning device 6 can be positioned with respect to the draft device 5 freely for each spinning unit 1.

  As described above, the air spinning device 6 has a problem that it is easily affected by the fiber characteristics because the fiber is swirled using the swirling airflow. That is, the air spinning device 6 has a problem that the strength of twist of the spun yarn Y to be manufactured is different due to fiber characteristics such as average fiber length. Therefore, there has been a demand for an air spinning device 6 in which the fiber guide 61 and the nozzle block 63 can be easily replaced to enable spinning according to the fiber characteristics.

  Next, a structure in which the fiber guide 61 and the nozzle block 63 can be easily replaced will be described with reference to FIG.

  The nozzle holder 64 configuring the pneumatic spinning device 6 includes a first nozzle holder portion 64A and a second nozzle holder portion 64B. In addition, the black arrow shown in the figure has shown the removal | desorption direction of 64 A of 1st nozzle holder parts.

  A fiber guide 61 and a nozzle block 63 are fixed to the first nozzle holder portion 64 </ b> A by a nozzle cap 66. The spindle 62 inserted into the through hole 63p of the nozzle block 63 is locked by a spindle cap 68 described later coming into contact with the first nozzle holder portion 64A. The second nozzle holder portion 64B is rotatably connected to the shaft portion SH (support portion) of the spinning unit 1.

  The first nozzle holder portion 64A is detachably attached to one end portion of the second nozzle holder portion 64B. More specifically, the first nozzle holder portion 64A can be attached to and detached from the second nozzle holder portion 64B by removing or tightening the two bolts BT (see FIG. 6).

  With such a configuration, the first nozzle holder portion 64A to which the fiber guide 61 and the nozzle block 63 are fixed becomes detachable, so that the fiber guide 61 and the nozzle block 63 can be easily exchanged. Thereby, spinning according to fiber characteristics can be performed, and the quality of the spun yarn Y can be improved.

  Next, a structure for guiding the air pumped from the air supply source AB to the spinning chamber SC will be described with reference to FIG. FIG. 6 shows a top view of the pneumatic spinning device 6 according to the embodiment of the present invention.

  The air guide path 64p that guides the air pumped from the air supply source AB to the spinning chamber SC includes a first air guide path 64Ap provided in the first nozzle holder part 64A and a first air guide path 64A provided in the second nozzle holder part 64B. And two air guide paths 64Bp. In addition, the white arrow shown in the figure has shown the flow direction of the supplied air. Black arrows shown in the figure indicate the attaching / detaching direction of the first nozzle holder portion 64A.

  The first air guide path 64Ap communicates with the air chamber AC (see FIG. 5) from a joint part 64Ac attached to one end of the first nozzle holder part 64A. The air guided to the air chamber AC is supplied to the spinning chamber SC through the air hole 63a of the nozzle block 63. The second air guide path 64Bp communicates from a joint portion 64Bc attached to the side end portion of the second nozzle holder portion 64B to a boss hole portion 64Bh provided at one end portion of the second nozzle holder portion 64B.

  When the first nozzle holder part 64A is attached to the second nozzle holder part 64B, the first air guide path 64Ap and the second air guide path 64Bp communicate with each other. More specifically, when the first nozzle holder part 64A is attached to the second nozzle holder part 64B, the joint part 64Ac of the first nozzle holder part 64A is inserted into the boss hole part 64Bh of the second nozzle holder part 64B. Therefore, the first air guide path 64Ap and the second air guide path 64Bp communicate with each other.

  With such a configuration, the first nozzle holder portion 64A can be freely attached and detached without removing the pipe AH extending from the air supply source AB, so that the replacement of the fiber guide 61 and the nozzle block 63 is further facilitated. Thereby, spinning according to fiber characteristics can be performed, and the quality of the spun yarn Y can be improved. Further, since it is not necessary to remove the pipe AH extended from the air supply source AB, it is possible to prevent foreign matter from entering the air guide path 64p (64Ap / 64Bp), and to improve the quality of the spun yarn Y. It becomes.

  Next, a method for fixing the spindle 62 will be described with reference to FIG. FIG. 7A shows an enlarged side view of the spindle 62 of the pneumatic spinning device 6 according to the embodiment of the present invention. FIG. 7B shows an XX cross-sectional view in FIG. 7A.

  The spindle 62 is supported by the spindle holder 67 in a state where the convex portion of the spindle holder 67 is fitted. Specifically, the spindle 62 is in a state where the convex portion of the upper end surface (upstream end surface in the fiber bundle traveling direction) of the spindle holder 67 is fitted into the lower end portion (downstream end surface in the fiber bundle traveling direction) of the spindle 62. It is supported by the spindle holder 67.

  The spindle 62 is fixed to the spindle holder 67 by a spindle cap 68 that is a spindle fixing member. More specifically, the spindle 62 is fixed to the spindle holder 67 by a spindle cap 68 in which a claw portion is hung on a retaining surface 62p of the spindle 62. In the present embodiment, the spindle cap 68 is provided with a female screw portion, and the spindle cap 68 is screwed into the male screw portion of the spindle holder 67.

  With such a configuration, the spindle 62 can be fixed to the spindle holder 67 by one-touch only by screwing the spindle cap 68, so that the spindle 62 can be easily replaced. Thereby, spinning according to fiber characteristics can be performed, and the quality of the spun yarn Y can be improved. Further, since the spindle 62 can be fixed with a simple structure, the cost can be reduced.

  Further, in the method of fixing the spindle 62 in the pneumatic spinning device 6, when the spindle cap 68 is screwed to the spindle holder 67, the convex portion 67 u provided on the spindle holder 67 is a concave portion provided on the spindle cap 68. It is characterized by meshing with 68u. The convex portion 67u may be provided on the spindle cap 68 instead of being provided on the spindle holder 67, and the concave portion 68u may be provided on the spindle holder 67 instead of being provided on the spindle cap 68.

  With such a configuration, when the spindle cap 68 is screwed until the convex portion 67u and the concave portion 68u are engaged with each other, a predetermined tightening torque is obtained. Therefore, the work for fixing the spindle 62 is simplified and the spindle 62 can be replaced. It becomes easier. Thereby, spinning according to fiber characteristics can be performed, and the quality of the spun yarn Y can be improved.

  Further, since the spindle cap 68 is formed of resin, the spindle 67 is deformed when the spindle cap 68 is screwed, and the convex portion 67u and the concave portion 68u are engaged with each other. For this reason, the spindle 62 can be fixed to the spindle holder 67 with one touch without using a tool. As a result, the time for exchanging the spindle 62 by the operator is shortened, and the operation efficiency of the spinning unit 1 is improved.

  In the conventional pneumatic spinning device 106, the spindle 162 is fixed to the spindle holder 167 using bolts as described in, for example, Japanese Patent Laid-Open No. 7-126924. Since the conventional pneumatic spinning device 106 is disposed at a position adjacent to the draft device, a sufficient working space for exchanging the spindle 162 is not secured. For this reason, it is difficult to work with a tool, and it is difficult to fix the spindle 162 to the spindle holder 167 using a bolt. However, in the method of fixing the spindle 62 to the spindle holder 67 by one-touch by screwing the spindle cap 68 as in the present embodiment, the work using a tool becomes unnecessary, so that the fixing work can be performed even in a narrow work space. Can be performed.

  Further, in a fixing method using a bolt as in the conventional pneumatic spinning device 106, an operator may accidentally drop the bolt. However, in the method of fixing the spindle 62 to the spindle holder 67 by screwing the spindle cap 68 as in this embodiment, the number of parts for fixing the spindle 62 to the spindle holder 67 is small, and the fixing work is simple. Can be performed.

  As shown in FIG. 8, the pneumatic spinning device 6 may have a configuration in which the spindle 62 is fixed by the hook member Ho without using the spindle cap 68. Even if the spindle 62 is fixed by the hook member Ho that is a spindle fixing member, the work for fixing the spindle 62 is simplified and the spindle 62 can be easily replaced. Thereby, spinning according to fiber characteristics can be performed, and the quality of the spun yarn Y can be improved. Further, since the spindle 62 can be fixed with a simple structure, the cost can be reduced.

  Next, a structure in which the nozzle holder 64 is locked by the stopper 64s will be described with reference to FIG. FIG. 9A shows a side view of the pneumatic spinning device 6 according to the embodiment of the present invention. FIG. 9B shows a front view seen from the direction of arrow Y in FIG. 9A.

  As shown in FIG. 9A, the second nozzle holder portion 64 </ b> B constituting the nozzle holder 64 is rotatably connected to the shaft portion SH (support portion) of the spinning unit 1. That is, the shaft portion SH supports the nozzle holder 64 so as to be movable in a direction in which the nozzle holder 64 approaches or separates from the wall surface W arranged to face the nozzle holder 64.

  In addition, a biasing member SP that biases the nozzle holder 64 in a direction close to the wall surface W is attached to the second nozzle holder portion 64 </ b> B constituting the nozzle holder 64. In other words, the urging force is applied to the nozzle holder 64 toward the wall surface W arranged to face the nozzle holder 64. A black arrow in the drawing indicates the direction of the urging force acting on the nozzle holder 64.

  As shown in FIG. 9B, a stopper 64 s is provided on the first nozzle holder portion 64 </ b> A constituting the nozzle holder 64. The stopper 64s is provided so as to protrude from the upper surface portion of the first nozzle holder portion 64A toward the wall surface W. For this reason, the nozzle holder 64 is locked when the stopper 64s abuts against the wall surface W.

  With such a configuration, the nozzle holder 64 to which the urging force acts is locked by the stopper 64s, so that rattling is suppressed and the positioning accuracy of the nozzle holder 64 is improved. The accuracy of the position of the fiber guide 61 and the nozzle block 63 fixed to the nozzle holder 64 with respect to the spindle 62 is also improved. As a result, the variation in the shape of the spinning chamber SC is reduced, and the quality of the spun yarn Y can be improved.

  As shown in FIG. 10, the nozzle holder 64 includes a dial 64D in which a plurality of stoppers 64s having different shapes are provided in the circumferential direction, and the stopper 64s contacting the wall surface W can be switched. Also good. More specifically, the plurality of stoppers 64s having different shapes are formed such that the protruding lengths from the surface of the nozzle holder 64 are different from each other. When spinning the sliver F having a long fiber length, the dial 64D is switched so that the nozzle holder 64 is locked by the stopper 64s having a long protruding length. When spinning the sliver F having a short fiber length, the dial 64D is switched so that the nozzle holder 64 is locked by the stopper 64s having a short protruding length.

  Since the nozzle holder 64 includes a plurality of stoppers 64s having different shapes, the locking position of the nozzle holder 64 can be changed by switching to any one of the stoppers 64s. Thereby, spinning according to fiber characteristics can be performed, and the quality of the spun yarn Y can be improved.

  In addition, as shown in FIG. 11, the structure which changes the latching position of the nozzle holder 64 by expanding-contracting the stopper 64s (refer arrow in the figure) may be sufficient. Thereby, spinning according to the fiber characteristics can be performed with a simple configuration, and the quality of the spun yarn Y can be improved.

  The spinning machine provided with the pneumatic spinning device 6 as described above can create a package P with high-quality spun yarn Y and reduce costs.

  Furthermore, in a spinning machine including a plurality of spinning units 1, the spun yarn Y manufactured by each spinning unit 1 is required to have the same quality. By producing the spun yarn Y by the pneumatic spinning device 6 according to the present embodiment, the quality variation between the spinning units 1 can be reduced.

  In the spinning unit 1 according to the present embodiment, the sliver F is sent from above to below. However, the present invention is not limited to such an embodiment. For example, a configuration in which a can in which the sliver F is stored is arranged in the lower part of the machine base and the winding device 9 is arranged in the upper part of the machine base.

DESCRIPTION OF SYMBOLS 1 Spinning unit 4 Sliver supply unit 5 Draft device 6 Pneumatic spinning device 61 Fiber guide 62 Spindle 63 Nozzle block 63p Hanging surface 64 Nozzle holder 64A First nozzle holder part 64Ap First air guide path 64B Second nozzle holder part 64Bp Second Air guide path 64D Dial 64s Stopper 66 Nozzle cap 67 Spindle holder 68 Spindle fixing member 7 Thread defect detection device 8 Tension stabilization device 9 Winding device D Spacing F Fiber bundle (sliver)
P package SC spinning room SP biasing member W wall surface Y spun yarn

Claims (9)

A fiber guide in which a fiber introduction path communicating with the spinning chamber is formed to guide the fiber bundle into the spinning chamber;
A nozzle block in which an air hole communicating with the spinning chamber is formed to guide the air into the spinning chamber;
A pneumatic spinning device including a spindle that guides the fiber bundle twisted in the spinning chamber in which a fiber passage communicating with the spinning chamber is formed,
A nozzle holder that supports the nozzle block in contact with the nozzle block;
A nozzle cap for fixing the fiber guide and the nozzle block to the nozzle holder;
The pneumatic spinning device according to claim 1, wherein the nozzle cap is attached to the nozzle holder in a state where the nozzle cap and the nozzle holder are in direct contact with each other. The nozzle holder supports the nozzle block and a first nozzle holder part to which the nozzle cap is attached;
A second nozzle holder part that supports the first nozzle holder part,
The pneumatic spinning device according to claim 1, wherein the first nozzle holder part is detachably attached to the second nozzle holder part. The first nozzle holder part is provided with a first air guide path for guiding air to the spinning chamber,
A second air guide path for guiding the air pumped from the air supply source to the second nozzle holder portion;
The first air guide path and the second air guide path communicate with each other when the first nozzle holder section is attached to the second nozzle holder section. Air spinning device. A fiber guide in which a fiber introduction path communicating with the spinning chamber is formed to guide the fiber bundle into the spinning chamber;
A nozzle block in which an air hole communicating with the spinning chamber is formed to guide the air into the spinning chamber;
A pneumatic spinning device including a spindle that guides the fiber bundle twisted in the spinning chamber in which a fiber passage communicating with the spinning chamber is formed,
A spindle holder for supporting the spindle;
And a spindle fixing member for fixing the spindle to the spindle holder with a single touch.   5. The pneumatic spinning device according to claim 4, wherein the spindle fixing member is screwed onto the spindle holder while being in contact with the spindle. The spindle holder is provided with a recess or projection,
The spindle fixing member is provided with a convex portion or a concave portion,
6. The spindle is latched to the spindle holder by engaging the convex portion and the concave portion when the spindle fixing member is screwed to the spindle holder. Pneumatic spinning device. A support unit that supports the nozzle holder so as to be movable in the direction of approaching or separating from the wall surface arranged to face the nozzle holder;
A stopper provided on the nozzle holder for positioning the nozzle holder in contact with the wall surface;
An air spinning device according to any one of claims 1 to 6, further comprising an urging member that urges the nozzle holder in a direction approaching the wall surface. The nozzle holder is provided with a plurality of the stoppers having different shapes,
The pneumatic spinning device according to claim 7, wherein the stopper that contacts the wall surface can be switched. The pneumatic spinning device according to any one of claims 1 to 8,
A spinning machine comprising: a winding device that winds a spun yarn spun by the pneumatic spinning device into a package.

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