JP3551872B2 - Spinning equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spinning device for producing a spun yarn by twisting a fiber bundle drafted by a draft device by applying a swirling airflow.
[0002]
[Prior art]
In a spinning apparatus in which a hollow guide shaft body for spinning is used, a spinning member including a spinning nozzle portion and a hollow guide shaft body for generating a fiber bundle into a yarn is disposed, and the spinning nozzle portion and the hollow guide The shaft body is formed with a turning nozzle and an auxiliary nozzle, respectively. The fiber constituting the fiber bundle is twisted by the action of the swirling airflow formed by the compressed air injected from the swirling nozzle of the spinning nozzle unit, and an actual twisted yarn (actual twisted yarn) is generated. In a normal spinning process, the injection of compressed air from the auxiliary nozzle of the hollow guide shaft body is stopped.
[0003]
In the splicing operation for starting the spinning device or the splicing operation when the yarn breakage occurs, in addition to the above-described jet of compressed air from the swirling nozzle of the spinning nozzle section, the hollow guide shaft Compressed air is injected from the auxiliary nozzle of the body, the fiber bundle is sucked into the yarn passage of the hollow guide shaft body, and the swirling airflow formed by the compressed air injected from the swirling nozzle of the spinning nozzle portion; A fiber bundle is formed into a bundled fiber-like yarn (bundled yarn) by the action of an air flow formed by compressed air injected from the auxiliary nozzle of the hollow guide shaft body. Thereafter, the supply of the compressed air from the compressed air supply source to the auxiliary nozzle of the hollow guide shaft body is stopped, and a known yarn splicing device is used by using the actual twisted yarn generated by the swirling airflow from the swirling nozzle of the spinning nozzle section. The yarn is spliced using the knotter and splicer installed in the machine, and spinning is resumed.
[0004]
[Problems to be solved by the invention]
The spinning apparatus as described above has a problem that a splicing error occurs due to the structure of the hollow guide shaft body.
[0005]
An object of the present invention is to solve the problems of the spinning apparatus as described above.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention firstly generates a swirling airflow at the tip of the hollow guide shaft body. generate A swivel nozzle; In the yarn splicing operation, in cooperation with the swirl airflow formed by the swirl nozzle, for performing yarn discharge spinning, In the thread guide of the hollow guide shaft Generate swirling airflow With auxiliary nozzle And The distance between the spray position of the swivel nozzle and the spray position of the auxiliary nozzle But The average fiber length of the fibers that make up the fiber bundle is approximately the same or shorter Formed Secondly, the hollow guide shaft body has a truncated cone-shaped tip portion and a cylindrical tube portion forming the main body, and an auxiliary nozzle in the main body. The formed inner cylinder member is disposed, and thirdly, the hollow guide shaft body is formed of ceramics.
[0007]
【Example】
Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.
[0008]
First, the spinning device of the present invention in which a hollow guide shaft body is used will be described.
[0009]
Reference numeral 1 denotes a fiber bundle accommodated in the can 2, and D denotes a back roller 3, a third roller 4, a second roller 5 on which an apron belt 5 a is mounted, and a front roller 6. It is a draft device. S is a spinning member which will be described later, and 7 is a yarn feeding member composed of a nip roller 7a and a delivery roller 7b. Reference numeral 8 denotes a slack tube for temporarily storing the yarn discharged from the spinning member S that has been spun during the yarn splicing operation, and 9 is a yarn clearer.
[0010]
Reference numeral 10 denotes a package wound around a bobbin 12 supported by a bobbin holder 11, and the package 10 is configured to rotate when a friction roller 13 abuts on the surface thereof. Reference numeral 14 denotes a traverse guide of a traverse device (not shown). A winding member W is constituted by the bobbin 12, the friction roller 13, the traverse guide 14 and the like supported by the bobbin holder 11.
[0011]
The fiber bundle 1 drawn out from the cans 2 is drafted by the draft device D and then enters the spinning member S to be formed into yarn. Thereafter, the yarn Y discharged from the spinning member S is nipped by the nip roller 7a and the delivery roller 7b constituting the yarn feeding member 7, and is fed in the direction of the package 10. Then, while traversing by the traversing guide 14, it is configured to abut against the friction roller 13 and be wound around the rotating package 10.
[0012]
As described above, the spinning unit composed of the draft device D, the spinning member S, the yarn feeding member 7, the slack tube 8, the yarn clearer 9, the winding member W, and the like is arranged along a machine base (not shown). Many spinning devices are formed side by side.
[0013]
Next, the spinning member S having the spinning nozzle portion 15 and the non-rotating hollow guide shaft body 16 will be described with reference to FIGS. 2 and 3.
[0014]
The spinning nozzle unit 15 includes a guide hole 15a for introducing the fiber bundle 1 drafted by the draft device D, and a needle holder 15c in which a needle 15b is attached on the flow path of the fiber bundle 1 discharged from the guide hole 15a. In addition, the front end portion 16a of the non-rotating hollow guide shaft body 16 located on the downstream side of the needle holder 15c is covered with a predetermined interval and in the vicinity of the front end portion 16a of the hollow guide shaft body 16 And a swirl airflow generation unit 15d for generating a swirl airflow.
[0015]
The whirling airflow generation part 15d is formed in a cylindrical shape, and is configured to be assembled concentrically with the needle holder 15c. A spinning chamber 15e for applying a swirling airflow to the fiber bundle 1 sent from the needle holder 15c is formed in the swirling airflow generating portion 15d, and the distal end portion 16a of the hollow guide shaft body 16 is formed in the spinning chamber 15e. Are accommodated coaxially.
[0016]
In addition, the swirl airflow generating portion 15d is formed with a plurality of swirl nozzles 15f for generating a swirl airflow in the spinning chamber 15e. The swirl nozzle 15f is formed as a narrow hole that communicates with the spinning chamber 15e, and each of the swirl nozzles 15f along the inner periphery of the swirl airflow generator 15d is shown as an example in FIG. Further, it is formed on the tangent line of the spinning chamber 15e and inclined toward the downstream side in the feeding direction of the fiber bundle 1 so as to flow in the counterclockwise direction (counterclockwise) A in plan view. A compressed air supply member 15h in which an air passage 15g is formed is disposed in the spinning nozzle portion 15 so as to surround the swirl nozzle 15f, and the compressed air supply member 15h is compressed by a pipe (not shown) through a pipe. Connected to air supply.
[0017]
The hollow guide shaft 16 includes a main body 16c composed of the above-described truncated cone-shaped tip 16a and a thin inner cylinder 16b formed integrally with the tip 16a, and the inner cylinder 16b side of the tip 16a. The outer cylindrical body 16f is fitted to the circumferential step 16d formed at the circumferential end, and is fitted to the bulging portion 16e formed at the end of the inner cylindrical body 16b. Yes. The distal end portion 16a is formed with an introduction hole 16g passing through the axis thereof, and the diameter of the introduction hole 16g is formed to be narrower than the inner diameter of the inner cylinder body 16b, and the inside of the introduction hole 16g and the inner cylinder body 16b is formed. A thread passage 16h is configured by the space portion.
[0018]
Reference numeral 16i denotes an auxiliary nozzle formed in the internal cylinder 16b located in the vicinity of the tip end portion 16a. A plurality of auxiliary nozzles 16i are formed in a tangential direction with respect to the yarn passage 16h. In the present embodiment, as shown in FIG. 3, it is formed so as to generate a swirling airflow in a clockwise direction (clockwise) B in a plan view. An air passage 16j is formed between the inner cylinder 16b and the outer cylinder 16f.
[0019]
Reference numeral 17 denotes a connecting member having a pipe portion 17a fitted into a through hole 16k formed in the outer cylindrical portion 16f. The connecting member 17 has a pipe 18 connected to a compressed air supply source (not shown). It is connected.
[0020]
The hollow guide shaft body 16 described above is fitted into a through hole 15k formed in a wall portion 15j opposite to the wall portion 15i on the front roller 6 side to which the needle holder 15c of the spinning nozzle portion 15 is attached, An opening 16m formed at the tip is configured to be arranged toward the needle 15b.
[0021]
When compressed air is supplied to an air passage 16j formed between the inner cylinder 16b and the outer cylinder 16f via a pipe 18 and a connecting member 17 connected to a compressed air supply source (not shown), the compressed air is compressed. The air passes through the air passage 16j and enters the inner cylinder 16b forming the yarn passage 16h from the auxiliary nozzle 16i, and is discharged from the yarn discharge port 16n at the end of the inner cylinder 16b. Thus, since the yarn passage 16h of the hollow guide shaft body 16 is formed in a divergent shape from the fiber introduction side to the yarn discharge side, the hollow guide shaft body is supplied by supplying compressed air from the auxiliary nozzle 16i. In the sixteen yarn passages 16h, an air flow from an opening 16m formed at the tip toward the yarn discharge port 16n is formed.
[0022]
The compressed air injected from the auxiliary nozzle 16i flows along the inner peripheral surface in the yarn passage 16h formed in the hollow guide shaft body 16 to form a swirling airflow. The compressed air injected from the auxiliary nozzle 16i is injected into the inner cylindrical body 16b having a larger diameter than the introduction hole 16g formed in the distal end portion 16a, and is thus injected from the auxiliary nozzle 16i into the yarn passage 16h. The compressed air flows to the yarn discharge port 16n side, and the narrow introduction hole 16e has a negative pressure. For this reason, an air flow in the suction direction (the direction toward the hollow guide shaft body 16) is generated in the opening 16 m formed at the tip of the hollow guide shaft body 16. As a result, the fiber bundle 1 can be continuously drawn into the yarn passage 16 h of the hollow guide shaft body 16.
[0023]
Next, an outline of the process of generating the yarn Y by the spinning unit of the spinning device of the present invention having the above-described configuration will be described.
[0024]
The fiber bundle 1 drawn out from the cans 2 and supplied to the draft device D is drafted by the draft device D and then generated by the action of the jet air injected from the swirl nozzle 15f of the swirl airflow generator 15d. The suction air flow in the vicinity of the guide hole 15a of 15c enters the guide hole 15a, and then is sent along the periphery of the needle 15b and enters the spinning chamber 15e.
[0025]
The fibers constituting the fiber bundle 1 sucked into the spinning chamber 15e are subjected to the action of a swirling air current that is jetted from the swiveling nozzle 15f and swirling at a high speed in the vicinity of the distal end portion 16a of the hollow guide shaft body 16, and the fiber bundle 1 It is twisted in the direction of the swirling airflow while being separated from. In addition, a part of the twist applied by the swirling airflow tries to propagate toward the front roller 6, but the propagation is blocked by the needle 15b, so that the fiber bundle 1 fed from the front roller 6 is twisted. Is not twisted by. The fibers twisted as described above are sequentially generated into a real twisted yarn (actual twisted yarn) Y that is mostly wound fibers, passes through the yarn passage 16h of the hollow guide shaft body 16, and passes through the yarn discharge port 16n. Discharged. In such a normal process of generating the yarn Y, compressed air is not supplied from the compressed air supply source to the air passage 16j of the hollow guide shaft body 16 through the pipe 18 and the connecting member 17. Compressed air is not supplied from the auxiliary nozzle 16i into the yarn passage 16h.
[0026]
In a normal spinning state, the yarn Y that is sequentially generated in the actual twisted yarn Y, passes through the yarn passage 16h of the hollow guide shaft body 16 and exits from the yarn discharge port 16n, and the nip roller 7a constituting the yarn feeding member 7 and the delivery belt It is sandwiched between the rollers 7b and fed in the direction of the package 10, and thereafter, while being traversed by the traverse guide 14, it contacts the friction roller 13 and is wound around the rotating package 10.
[0027]
Next, a description will be given of a yarn joining operation for starting the spinning device and a yarn joining operation when a yarn breakage occurs.
[0028]
Before the spinning device is started or when a yarn breakage occurs, a part of the draft roller is stopped, and compressed air is not injected from the swivel nozzle 15f and the auxiliary nozzle 16i. The nozzle 16i is in an inoperative state. The fiber bundle 1 whose tip is held by the stopped third roller 4 is sent out by rotating the back roller 3 and the third roller 4, and passes through the second roller 5 and the front roller 6 to the spinning member S. Supply. Simultaneously with the start of driving of the stopped draft roller, injection of compressed air is started from the turning nozzle 15f and the auxiliary nozzle 16i. That is, at the time of resuming spinning in which the yarn splicing operation is performed, the spinning member S is injected with compressed air from the swivel nozzle 15f and from the compressed air supply source through the pipe 18 and the connecting member 17 to the hollow guide shaft body 16. Compressed air is supplied to the air passage 16j. Accordingly, the compressed air is also injected from the auxiliary nozzle 16i into the yarn passage 16h.
[0029]
The swirl nozzle 15f is formed to be inclined toward the downstream side in the feed direction of the fiber bundle 1, and the compressed air injected from the swirl nozzle 15f flows in the feed direction of the fiber bundle 1 while swirling. The fiber bundle 1 introduced into the guide hole 15a is sent to the vicinity of the opening 16m formed at the tip of the hollow guide shaft body 16 through the needle 15b while being loosely twisted by the swirling airflow.
[0030]
Further, the compressed air injected from the auxiliary nozzle 16 i flows along the inner peripheral surface in the yarn passage 16 h formed in the hollow guide shaft body 16 to form a swirling airflow, and at the tip of the hollow guide shaft body 16. An air flow in the suction direction (the direction toward the hollow guide shaft body 16) is generated in the opening 16m formed in the above. As a result, the fiber bundle 1 can be continuously drawn into the yarn passage 16 h of the hollow guide shaft body 16.
[0031]
As described above, the false-twisted fiber bundle 1 sent to the vicinity of the opening 16m formed at the tip of the hollow guide shaft body 16 is sucked from the opening 16m into the yarn passage 16h by the suction flow from the opening 16m. . Then, the fiber bundle 1 passes through the narrow introduction portion 16g and reaches the thick inner cylinder 16b, and the swirl airflow formed in the spinning nozzle portion 15 is opposite to the swirl airflow formed by the swirl nozzle 15f. Exposed to air current. For this reason, the fiber bundle 1 in a loose false twist state is spun into a bundled fiber-like yarn (bundled yarn) by a bundling spinning technique that generates yarns by swirling airflows in opposite directions. It is discharged from the discharge port 16n. Such a spinning state of the bundled fiber yarns by the turning nozzle 15f and the auxiliary nozzle 16i is referred to as yarn discharge spinning.
[0032]
On the other hand, the bound yarn discharged from the yarn discharge port 16n of the hollow guide shaft body 16 as described above by driving the yarn splicing device P that has traveled and stopped to the spinning unit that requires yarn splicing, While being sucked into a suction pipe 19 as a yarn suction means on the spinning side, the yarn is guided to a yarn splicing portion 20 made of a knotter, a splicer or the like. In the middle of being guided to the yarn splicing portion 20 by the suction pipe 19, the bundled yarn is sandwiched between the nip roller 7a and the delivery roller 7b constituting the yarn feeding member 7, and the bundled yarn is stably fed out. Thereafter, the supply of compressed air from the compressed air supply source to the auxiliary nozzle 16i is stopped, and the injection of compressed air from the auxiliary nozzle 16i into the yarn passage 16h is stopped. As a result, the swirling airflow in the hollow guide shaft body 16 disappears, and the above-described spinning out of the bundled yarn by the swirling airflows in the opposite directions is completed, and the normal spinning state of the yarn Y, that is, the spinning nozzle portion 15 The actual twisted yarn is spun by the swirling airflow from the swirling nozzle 15f.
[0033]
When the spinning side yarn is passed from the suction pipe 19 of the yarn splicing device P to the yarn splicing portion 20, all the bundled yarn is sucked into the suction pipe 19, and the actual twisted yarn is passed to the yarn splicing portion 20. . On the other hand, in parallel with the above-described operation of the suction pipe 19, the suction mouth 21 (winding suction device) of the yarn splicing device P is driven, and the yarn end on the package 10 side is also passed to the yarn splicing portion 20. deep. Then, after the yarn on the suction pipe 19 side and the yarn on the suction mouth 21 side are delivered to the yarn joining portion 20, the yarn joining portion 20 is driven to join both yarns, and the yarn joining operation is completed. become. In this way, when piecing is performed by the piecing portion 20, all the bundled yarn is removed in the suction pipe 19, and is joined to the yarn on the package 10 side in the portion of the actual twisted yarn.
[0034]
Thus, in order to suck the fiber bundle 1 swung by the spinning nozzle portion 15 and introduce it into the yarn passage 16h of the hollow guide shaft body 16, the yarn joining operation at the time of yarn cutting or the yarn joining at the start of spinning is performed. During the work, means for generating an air flow in the suction direction (the direction toward the hollow guide shaft body 16) is provided in the opening 16m formed at the tip of the hollow guide shaft body 16. In this case, the fiber bundle 1 on the spinning side can be easily drawn into the hollow guide shaft body 16, and the bundled yarn can be discharged from the yarn discharge port 16n of the hollow guide shaft body 16. In addition, a quick splicing operation can be performed.
[0035]
In the yarn spinning, the fiber bundle 1 is generated as a bundled yarn by the swirling airflow in the hollow guide shaft body 16 in combination with the swirling airflow in the spinning nozzle unit 15. While being sucked by the pipe 19 and moved in the direction of the yarn splicing portion 20 as the suction pipe 19 is rotated downward, the nip roller 7a and the delivery roller 7b constituting the yarn feeding member 7 are used. It is pinched. In this way, after the bundled yarn is sandwiched between the nip roller 7a and the delivery roller 7b, the supply of the compressed air from the compressed air supply source to the auxiliary nozzle 16i is stopped, thereby feeding the yarn by the yarn feeding member 7. By using the force, the spinning member S can be converted from the spun state of the bundled yarn, that is, from the spun-out spun state to the normal spun state of the actual twisted yarn. Then, after switching to the actual twisted yarn, only the actual twisted yarn is wound around the package 10 in order to splice the actual twisted yarn and the actual twisted yarn pulled out from the package 10.
[0036]
In the embodiment described above, the swirling airflow in the direction opposite to the swirling airflow in the spinning nozzle portion 15 is generated in the hollow guide shaft body 16 by the compressed air injected from the auxiliary nozzle 16i formed in the hollow guide shaft body 16. Although an example is shown in which it is generated, uniquely, a suction flow is formed in the opening 16m formed at the tip of the hollow guide shaft body 16, and this suction flow sends it to the vicinity of the opening 16m. It is important that the false-twisted fiber bundle 1 is sucked into the yarn passage 16h from the opening 16m and discharged from the yarn discharge port 16n. Therefore, even if the formed filamentary fiber bundle 1 twisted by the swirling airflow in the spinning nozzle portion 15 is exposed to the compressed air injected from the auxiliary nozzle 16i of the hollow guide shaft body 16, it is generated in a filament shape. If the fiber bundle 1 can be guided to the yarn splicing portion 20 while being discharged from the yarn discharge port 16n of the hollow guide shaft body 16 and sucked by the suction pipe 19 while maintaining the state of the fiber bundle 1 The air flow in the yarn passage 16h formed by the compressed air injected from the auxiliary nozzle 16i formed in the guide shaft body 16 is not limited to the swirl airflow, and is formed at the tip of the hollow guide shaft body 16. A direct current that is not swirling from the opening 16m toward the yarn discharge port 16n may be used, or a swirling airflow in the same direction as the swirling airflow in the spinning nozzle unit 15 may be used.
[0037]
As described above, in the yarn splicing operation, the false-twisted fiber bundle 1 sent to the vicinity of the opening 16m formed at the tip of the hollow guide shaft body 16 is removed from the opening 16m of the hollow guide shaft body 16. The swirl that is sucked into the yarn passage 16h from the opening 16m by the suction flow and formed by compressed air that is injected from the swivel nozzle 15f of the spinning nozzle unit 15 and swirls at high speed in the vicinity of the distal end portion 16a of the hollow guide shaft body 16. The fiber bundle 1 in a loose false twist state is spun into a bundle yarn by simultaneously receiving the action of both the air current and the swirling air current formed by the compressed air jetted from the auxiliary nozzle 16i of the hollow guide shaft body 16. Will be. At this time, since the propagation of false twist is prevented by the needle 15b on the yarn path between the hollow guide shaft body 16 and the front roller 6, the false twist does not propagate to the front roller 6, and the swivel nozzle 15f A stronger binding yarn can be generated while the fibers are swung by the swirling airflow.
[0038]
In the process of generating the loose false twisted fiber bundle 1 from the loose false twisted state as described above, if the loose false twisted fiber bundle 1 is not generated in the bundled yarn and remains in the loose false twisted state, Therefore, the yarn is cut during the above-described yarn splicing operation, and a yarn splicing error occurs.
[0039]
One reason that the loose false twisted fiber bundle 1 is not generated on the binding yarn is that the distance between the injection position of the swivel nozzle 15f (near the tip surface 16p of the hollow guide shaft body 16) and the injection position of the auxiliary nozzle 16i The tip end portion 16a of the hollow guide shaft body 16 is longer than the average fiber length of the fibers constituting the bundle 1 and is formed by compressed air ejected from the swirl nozzle 15f of the spinning nozzle portion 15 as described above. This is because the actions of both the swirling airflow in the vicinity and the swirling airflow formed by the compressed air injected from the auxiliary nozzle 16 i of the hollow guide shaft body 16 cannot be simultaneously received. Therefore, by forming the auxiliary nozzle 16i as close as possible to the distal end surface 16p of the hollow guide shaft body 16, the distance between the spray position of the swivel nozzle 15f and the spray position of the auxiliary nozzle 16i is approximately equal to the average fiber length. It is possible to eliminate the yarn splicing error caused by the structure of the hollow guide shaft body 16 described above by making it the same or shorter.
[0040]
Further, when the tip portion 16a is shortened, a hollow portion formed by compressed air injected from the swirl nozzle 15f of the spinning nozzle portion 15 is formed at a bonding portion between the circumferential step portion 16d formed on the tip portion 16a and the outer cylinder 16i. In order to enter under the influence of the swirling air current in the vicinity of the distal end portion 16a of the guide shaft body 16, the fibers constituting the fiber bundle 1 that are swung around by the swirling air current are caught on the bonding portion, causing thread breakage.
[0041]
A hollow guide shaft 160 according to another embodiment that can solve the above-described problem will be described with reference to FIG.
[0042]
In this embodiment, the hollow guide shaft 160 is formed integrally with the distal end portion 160a continuously to the truncated cone-shaped distal end portion 160a similar to the aforementioned truncated cone-shaped distal end portion 16a. A main body 160c formed of a cylindrical tube portion 160b, and enters the truncated cone-shaped tip portion 160a beyond the cylindrical tube portion 160b into the main body 160c. A space extending in the direction of the surface (on the side of the needle holder 15c) 160d is formed. The space portion in the truncated cone-shaped tip portion 16a is formed in a truncated cone shape, and the thickness of the tip portion 160a where the truncated cone-shaped space portion is located is formed substantially constant. A thin introduction portion 160e similar to the above-described thin introduction hole 16g is formed at the distal end portion 160a where the truncated cone space is not formed. In addition, a recess 160f is formed in the side wall located in the space of the tip 160a.
[0043]
160g is a cylindrical inner cylinder member that is inserted into a space formed inside the main body 160c. One end of the inner cylinder member 160g is formed on a side wall that is located in the space of the front end portion 160a of the main body 160c. A convex portion 160h that fits into the concave portion 160f is formed, and the convex portion 160h is formed with an introduction hole 160i on the side of the inner cylinder member 160g having the same diameter as the introduction hole 160e formed in the distal end portion 160a. ing. Except for the introduction hole 160i on the inner cylinder member 160g side, the inner diameter of the inner cylinder member 160g is formed larger than the holes of the introduction holes 160e and 160i, and the introduction hole 160e and 160i and the space portion in the inner cylinder member 160g A yarn passage 160j similar to the yarn passage 16h described above is formed.
[0044]
Reference numeral 160k denotes an auxiliary nozzle that is formed on the inner cylinder member 160g and is similar to the auxiliary nozzle 16j of the hollow guide shaft body 16 described above, and is formed close to the convex portion 160h. 160m is a bulging portion that is integrally formed on the outer periphery of the inner cylindrical member 160g located on the opposite side of the convex portion 160h, and is similar to the bulging portion 16e of the hollow guide shaft body 16 described above. The end portion of the cylindrical portion 160b of the main body 160c is fitted to the portion 160m.
[0045]
The convex portion 160h formed on the inner cylindrical member 160g is fitted into the concave portion 160f formed on the side wall located in the space portion of the distal end portion 160a of the main body 160c via an adhesive, and the inner cylindrical member 160g The hollow guide shaft body 16 is formed by fitting the bulging portion 160m to the cylindrical portion 160b of the main body 160c through the same adhesive. An air passage 160n similar to the air passage 16j of the hollow guide shaft 16 described above is formed between the main body 160c and the inner cylindrical member 160g disposed in the main body 160c. ing. The cylindrical portion 160b of the main body 160c located near the bulging portion 160m of the inner cylindrical member 160g has a through hole 160p, and the pipe portion 17a of the connecting member 17 described above is formed in the through hole 160p. It is connected.
[0046]
Since it comprised as mentioned above, the average fiber of the fiber which comprises the fiber bundle 1 is made into the distance between the injection position of the turning nozzle 15f (near the front end surface 160d of the hollow guide shaft body 160) and the injection position of the auxiliary nozzle 160k. It can be about the same as the length or shorter. Therefore, the fiber bundle 1 is formed by the swirling airflow in the vicinity of the distal end portion 160a of the hollow guide shaft body 160 and the auxiliary nozzle 160k of the hollow guide shaft body 160 formed by compressed air injected from the swiveling nozzle 15f of the spinning nozzle section 15. It is possible to simultaneously receive the action of both the swirling airflow and the swirling airflow formed by the compressed air to be jetted, and the loosely twisted fiber bundle 1 can be formed into a strong and strong binding yarn. Yarn splicing errors due to the structure of the shaft body 160 can be eliminated.
[0047]
Further, the main body 160c of the hollow guide shaft body 160 which is swung by the swirling airflow formed by the compressed air injected from the swirling nozzle 15f of the spinning nozzle portion 15 and in contact with the fibers constituting the fiber bundle 1 is integrally formed. That is, that is, the joint between the main body 160c including the tip 160a and the inner cylinder member 160g in which the auxiliary nozzle 160k is formed is not on the outer periphery where the fibers may contact but inside the main body 160c. Therefore, unlike the hollow guide shaft body 16 described above, the circumferential step portion 16d formed in the tip portion 16a and the outer cylinder 16i are not on the outer periphery, so that the swirling airflow causes the tip portion 160a to have an outer periphery. The fibers constituting the fiber bundle 1 are not caught by the bonded portion and cause yarn breakage.
[0048]
A hollow guide shaft 161 according to another embodiment will be described with reference to FIG.
[0049]
In this embodiment, a truncated cone-shaped tip 160a is replaced with a tip 160a in a main body 160c composed of the aforementioned truncated cone-shaped tip 160a and a cylindrical tube portion 160b formed integrally with the tip 160a. The main body 160c is divided into two parts in the vicinity of the recess 160f formed on the side wall located in the space. The divided main body 160c is joined with an appropriate adhesive. Thus, by making the main body 160c into a divided structure, it is possible to reduce the manufacturing cost of the hollow guide shaft body as compared with an integral structure. The other configuration is the same as that of the hollow guide shaft body 160 shown in FIG.
[0050]
In this embodiment, unlike the embodiment shown in FIG. 5, a bonding portion is formed at a joint 161c between a truncated cone-shaped tip 161a and a cylindrical tube 161b having a truncated cone. As in the case of the two-divided hollow guide shaft body 160 shown in FIG. 5, the auxiliary nozzle 160k can be brought closer to the distal end surface 160d of the hollow guide shaft body 160. The bundle 1 is formed by compressed air jetted from the swivel nozzle 15 f of the spinning nozzle unit 15, and the swirl airflow in the vicinity of the tip 160 a of the hollow guide shaft body 160 and the compression jetted from the auxiliary nozzle 160 k of the hollow guide shaft body 160. It is possible to simultaneously receive the action of both the swirling airflow and the swirling airflow formed by the air, and to generate the loosely-twisted fiber bundle 1 into a strong and strong binding yarn. It is capable of an effect that can be eliminated Wei mistakes.
[0051]
The members constituting the hollow guide shafts 160 and 161 are formed separately from each other, and then the respective members are bonded via an appropriate adhesive, so that the hollow guide shafts 160 and 161 described above are bonded. The hollow guide shafts 160 and 161 can be manufactured by forming these constituent members using ceramic powder and then sintering them in a sintering furnace. Thus, by forming with ceramics, there is no formation of protrusions that catch the fibers constituting the fiber bundle 1 as in the case of using an adhesive as described above. The agent can prevent the auxiliary nozzle 160k from being blocked, and thus the yield of the hollow guide shafts 160 and 161 is improved.
[0052]
In the above-described embodiments, the hollow guide shafts 160 and 161 are shown as being divided into two or three parts. However, the hollow guide shafts 160 and 161 are appropriately divided into four or more parts, and then assembled through an adhesive. It can also be configured.
[0053]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be achieved.
[0054]
The distance between the spray position of the swirl nozzle and the spray position of the auxiliary nozzle is approximately the same as or shorter than the average fiber length of the fibers that make up the fiber bundle. Therefore, it is possible to produce a binding yarn that is strong in strength, and therefore, it is possible to eliminate a splicing error caused by the structure of the hollow guide shaft body.
[0055]
Since the frustoconical tip portion and the cylindrical tube portion constituting the main body of the hollow guide shaft body are integrally formed, the fibers constituting the fiber bundle swung around by the swirling airflow are caught on the bonded portion, and the yarn There is no such thing as cutting.
[0056]
Since the member constituting the spinning hollow guide shaft body is formed of ceramics, the fibers constituting the fiber bundle are caught as in the case of joining the constituent members of the spinning hollow guide shaft body using an adhesive. Such protrusions are not formed, and the auxiliary nozzle can be prevented from being blocked by the adhesive, so that the yield of the hollow guide shaft body is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a spinning unit constituting a spinning device of the present invention.
FIG. 2 is a side sectional view of a hollow guide shaft body and the like used in the spinning device of the present invention.
FIG. 3 is a side sectional view of a main part of a hollow guide shaft body and the like used in the spinning device of the present invention.
FIG. 4 is a schematic side view of the spinning device of the present invention.
FIG. 5 is a side sectional view of a hollow guide shaft body and the like of another embodiment used in the spinning device of the present invention.
FIG. 6 is a side sectional view of a hollow guide shaft body and the like of still another embodiment used in the spinning device of the present invention.
[Explanation of symbols]
D ... Draft device
S ... Spinning member
1 ... Fiber bundle
7 ............ Thread feed member
10 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Package
15 ... Spinning nozzle
16, 160, 161... Hollow guide shaft body

Claims (3)

The swivel nozzle that generates a swirling airflow at the tip of the hollow guide shaft body, and the hollow guide for performing yarn discharge spinning in cooperation with the swirling airflow formed by the swirling nozzle during the yarn splicing operation together and an auxiliary nozzle for generating a whirling air current in the yarn passage of the shaft, the distance between the injection location and the ejection position of the auxiliary nozzle of the swirl nozzle, and an average fiber length of the fibers constituting the fiber bundle A spinning apparatus characterized by being formed substantially the same or shorter. In the hollow guide shaft body, a truncated cone-shaped tip portion and a cylindrical tube portion constituting the main body are integrally formed, and an inner cylinder member in which an auxiliary nozzle is formed is arranged in the main body. The spinning device according to claim 1, wherein the spinning device is provided. The spinning device according to claim 1 or 2, wherein the hollow guide shaft body is made of ceramics.

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