JP2003278034A - Spinning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction air flow control means controlling suction air flow for a suction hole so as to prevent adhesion and twining around a hollow guide shaft and, thereby, preventing formation of a weak yarn part having decreased yarn strength. <P>SOLUTION: The spinning device has a spinning nozzle element 16 having a nozzle hole 16d, a hollow guide shaft 19 or 190 set on a spinning nozzle element side or the reverse side through a shaft mounting element 22, a space 23 surrounded by the spinning nozzle and the shaft mounting element and a suction hole 16g generating the suction flow in the space, wherein a suction air flow control device C1 for controlling the suction air flow to the suction hole is provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning device for producing a spun yarn by twisting a fiber bundle drafted by a drafting device with a swirling air flow.

[0002]

2. Description of the Related Art Conventionally, there is known a spinning device having a spinning member including a spinning nozzle member having a nozzle hole through which compressed air is jetted, and a hollow guide shaft body. Compressed air jetted from the nozzle hole toward the tip of the hollow guide shaft twists the fibers that make up the fiber bundle to be supplied to the spinning member. -Shaped yarn (real twisted yarn) will be generated.

[0003]

In the above-described conventional spinning device, the fibers are attached to or wound around the hollow guide shaft, which causes the weak yarn with reduced yarn strength to be produced. There was a problem that parts were created.

An object of the present invention is to solve the problems of the above-described conventional spinning device.

[0005]

In order to achieve the above-mentioned object, the present invention firstly provides a spinning nozzle member having a nozzle hole, and a shaft body attaching member on the side opposite to the spinning nozzle member side. And a hollow guide shaft body attached to the spinning guide shaft member, a space portion surrounded by the spinning nozzle member and the shaft body mounting member is formed, and a suction hole for generating a suction flow is provided in the space portion. Secondly, a suction air flow control means for controlling a suction air flow to the suction hole is provided, and secondly, as the control means, a hollow located in a space from a position facing the suction hole. Compressed air injecting means for injecting compressed air toward the outer peripheral surface of the guide shaft body on the shaft body mounting member side is arranged. Thirdly, a spinning nozzle member having a nozzle hole and a hollow guide shaft member are provided. In addition to being equipped, yarn splicing In the spinning device for inserting the seed yarn in the order of the yarn passage of the hollow guide shaft and the spinning nozzle to perform yarn splicing, the compressed air injecting means for injecting compressed air toward the hollow guide shaft is provided. , At least during the yarn splicing operation, a control device for stopping the injection of compressed air by the compressed air injecting means is provided,
Fourthly, compressed air is intermittently jetted toward the hollow guide shaft.

[0006]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

First, the overall structure of the spinning device of the present invention will be described with reference to FIG.

Reference numeral 1 is a fiber bundle (sliver) accommodated in the can 2, 3 is a trumpet-shaped guide for guiding the fiber bundle 1, D is a back roller 4,
This is a four-wire draft device as an example, which includes a third roller 5, a second roller 6 on which an apron belt 6a is mounted, and a front roller 7. S is a spinning member to be described later, and 8 is a yarn feeding member including a nip roller 8a and a delivery roller 8b. 9 is
In the yarn splicing operation, a slack tube for temporarily storing the yarn discharged from the spinning member S whose spinning has been restarted, and 10 is a yarn clearer. 11 is
Bobbin 1 supported by a bobbin holder (not shown)
It is a package wound around 2, and the package 11 is
The friction roller 13 that is rotationally driven comes into contact with the friction roller 13 so that the friction roller 13 is rotated. 14
Is a traverse guide of a traversing device (not shown). The bobbin 12, the friction roller 13, the traverse guide 14 and the like supported by the bobbin holder constitute a winding member W.

The fiber bundle 1 drawn out from the can 2 is drafted by the drafting device D and then enters the spinning member S to be formed into yarn. After that, the yarn Y discharged from the spinning member S is nipped by the nip roller 8a and the delivery roller 8b which form the yarn feeding member 8, and is fed toward the package 11. Then, while being traversed by the traverse guide 14, it comes into contact with the friction roller 13 and is wound around the rotating package 11.

The spinning unit composed of the draft device D, the spinning member S, the yarn feeding member 8, the slack tube 9, the yarn clearer 10 and the winding member W as described above is mounted on a machine stand (not shown). Along, many,
The spinning devices are formed side by side.

Next, the spinning member S will be described with reference to FIG.

Reference numeral 15 is a fiber introduction block having an introduction hole 15a for introducing the fiber bundle 1 drafted by the draft device D and a needle 15b on the flow path of the fiber bundle 1 discharged from the introduction hole 15a. Block 15
Is a mounting hole 16 formed at the tip of the spinning nozzle member 16.
It is inserted in a. A substantially frusto-conical space having an inner peripheral wall 16b inclined in a divergent shape in a direction away from the fiber introduction block 15 on the downstream side (left side in FIG. 2) of the mounting hole 16a into which the fiber introduction block 15 is fitted. The portion 16c is formed. Reference numeral 16d denotes a plurality of nozzle holes formed in the spinning nozzle member 16 located near the fiber introduction block 15, and 17 denotes a compressed air supply member having an air passage 17a formed so as to surround the nozzle hole 16d. The compressed air supply member 17 is connected to a compressed air supply source (not shown) via a suitable pipe.

An air ejection hole 16f is formed in the cylindrical portion 16e of the spinning nozzle member 16, and an air supply line L1 is connected to the air ejection hole 16f. The air supply line L1 is a switching valve. Compressed air supply source A1 via V1
It is connected to the. C1 is a control device that controls the opening / closing operation of the switching valve V1. In this embodiment, the air ejection holes 16
The compressed air injection means, which is the suction flow control means, is constituted by f, the air supply line L1, the switching valve V1, the compressed air supply source A1, and the control device C1.

Reference numeral 16g is a suction hole formed in the cylindrical portion 16e of the spinning nozzle member 16 at a position facing the air ejection hole 16f to which the above-mentioned air supply line L1 is connected. A pipe 18 connected to an air suction source (not shown) is connected.

Reference numeral 19 denotes a hollow guide shaft body, which has a truncated cone-shaped tip portion 19a and a cylindrical body portion 19c having an annular internal air passage 19b.
A thread passage 19d is formed along the axis of the hollow guide shaft body 19. The internal air passage 19b and the yarn passage 19d are
They are connected by an auxiliary nozzle 19e, and the internal air passage 19b has a through hole 19 formed in the cylindrical portion 19c.
A pipe 21 connected to a compressed air supply source (not shown) is connected via a connector 20 connected to f. The auxiliary nozzle 19e is configured to be located closer to the tip end portion 19a than the through hole 19f formed in the cylindrical body portion 19c.

The compressed air from the compressed air supply source enters the internal air passage 19b through the connector 20 and the pipe 21, and is then jetted from the auxiliary nozzle 19e to form the thread formed on the hollow guide shaft body 19. It is configured so as to enter the passage 19d and flow toward the yarn discharge port 19g located on the opposite side of the distal end portion 19a of the hollow guide shaft body 19.

The hollow guide shaft body 19 is a member for mounting the shaft body 2.
The shaft body mounting member 22 is fitted in the mounting hole 22a formed in No. 2 and is fitted with the spinning nozzle member 16 by fitting the fitting portion 22b into the tubular portion 16e of the spinning nozzle member 16. Is configured.

A truncated cone-shaped tip portion 1 of the hollow guide shaft body 19
9a is a space portion 16 of the spinning nozzle member 16 having a substantially truncated cone shape.
It is arranged in c, and the tip portion 19a is arranged so as to face the needle 15b attached to the fiber introducing block 15. In addition, the spinning nozzle member 1
A gap G having a predetermined width is formed between the inner peripheral wall 16b of the space portion 16c formed in 6 and the outer peripheral surface 19a1 of the tip end portion 19a of the hollow guide shaft body 19.

Next, the process of producing the yarn Y by the spinning unit which constitutes the spinning device having the above-mentioned construction will be outlined.

The fiber bundle 1 drawn from the can 2 and supplied to the draft device D is generated by the action of the blast air jetted from the nozzle hole 16d of the spinning nozzle member 16 after being drafted by the draft device D. A space 16 formed in the spinning nozzle member 16 by being introduced into the introduction hole 15a by the suctioned air flow near the introduction hole 15a of the fiber introduction block 15 and then sent along the periphery of the needle 15b.
In c, it enters the spinning chamber 16c1 located between the tip end portion 19a of the hollow guide shaft body 19 and the fiber introduction block 15.

Fiber bundle 1 sucked into the spinning chamber 16c1
The fibers constituting the fibers are subjected to the action of a swirling airflow that is jetted from the nozzle holes 16d and swirling at a high speed in the vicinity of the tip end portion 19a of the hollow guide shaft body 19, and some of the fibers are inverted while being separated from the fiber bundle 1. The fiber is wound around the outer periphery of the tip end portion 19a of the hollow guide shaft body 19, and further, while being swirled around the fiber in the process of being formed, is wound around the outer periphery and twisted in the direction of the swirling airflow. Further, a part of the twist applied by the swirling airflow tries to propagate in the direction of the front roller-7, but since the propagation is blocked by the needle 15b, the fiber bundle 1 sent from the front roller-7 is It is not twisted by the above twist. The fibers twisted by the swirling air flow are sequentially generated into a real twisted yarn Y composed of a core fiber and a wound fiber wound around the core fiber, pass through a yarn passage 19d of the hollow guide shaft body 19, and are discharged. It is discharged from the outlet 19g. In such a normal yarn Y producing process, the hollow guide shaft body 19 is passed from the compressed air supply source through the pipe 21 and the connecting member 20.
Compressed air is not supplied to the internal air passage 19b of the above, and therefore, compressed air is not supplied from the auxiliary nozzle 19e into the yarn passage 19d.

In a normal spinning state, the yarn Y, which has passed through the yarn passage 19d of the hollow guide shaft 19 and exits from the yarn discharge port 19g, is fed by the nip roller 8a and the delivery roller 8b constituting the yarn feeding member 8. It is sandwiched and sent in the direction of the package 11, and then, while being traversed by the traverse guide 14, it comes into contact with the friction roller-13,
It is wound up on the rotating package 11.

Next, the yarn splicing operation of the spinning device having the above-mentioned structure will be described. In addition, "during splicing work" means
The yarn clearer 10 detects the yarn defect portion, and based on the detection of the yarn defect portion, the yarn clearer 10 transmits the yarn defect detection signal to the central controller until the normal spinning is restarted. Say.

The yarn clearer 10 is used to remove yarn defects such as slabs.
When the yarn breakage is detected by detecting the yarn, the back roller 4 and the third roller 5 are stopped, and therefore the fiber bundle 1 is stopped by the stopped third roller 5
And is constantly cut between the rotating second roller 6 and the tip of the fiber bundle 1 is gripped by the stopped third roller 5. In the yarn splicing operation, the fiber bundle 1 is sent out by re-driving the back roller 4 and the third roller 5, and is supplied to the spinning member S via the second roller 6 and the front roller 7. When the driving of the draft device D, which has been stopped, is restarted, the injection of compressed air is started from the nozzle hole 16d of the spinning nozzle member 16 and the auxiliary nozzle 19e of the hollow guide shaft body 19. That is, during the yarn splicing work, the spinning nozzle member 16
Compressed air is being jetted from the nozzle hole 16d of the above, and compressed air is being supplied from the compressed air supply source to the internal air passage 19b of the hollow guide shaft body 19 via the pipe 21 and the connecting member 20, and therefore, Compressed air is also injected into the passage 19d from the auxiliary nozzle 19e.

Since the compressed air jetted from the nozzle hole 16d of the spinning nozzle member 16 flows in the feeding direction of the fiber bundle 1 while swirling, the introduction hole 15a of the fiber introducing block 15 is provided.
The fiber bundle 1 introduced in (1) is sent to the vicinity of the tip end portion 19a of the hollow guide shaft body 17 through the needle 15b while being brought into a loose false twist state by the swirling airflow. Further, the compressed air jetted from the auxiliary nozzle 19e flows along the yarn passage 19d formed in the hollow guide shaft body 19 while forming a swirling airflow, and at the same time, the hollow guide shaft body 19
A flow of air in the suction direction (direction toward the inside of the hollow guide shaft body 19) is generated in the vicinity of the opening 19h formed in the tip end portion 19a of the. Accordingly, the fiber bundle 1 can be continuously drawn into the yarn passage 19d of the hollow guide shaft body 19.

The fiber bundle 1 in the false twist state sent near the opening 19h formed in the tip portion 19a of the hollow guide shaft body 19
Is sucked into the yarn passage 19d through the opening 19h. Then, the fiber bundle 1 is exposed to the swirling air current generated by the compressed air jetted from the auxiliary nozzle 19e in the yarn passage 19d. Spinning nozzle member 16
By the compressed air injected from the nozzle hole 16d of
Due to the swirling airflow generated in the spinning chamber 16c1 and the swirling airflow generated in the yarn passage 19d of the hollow guide shaft body 19 by the compressed air injected from the auxiliary nozzle 19e of the hollow guide shaft body 19. The fiber bundle 1 in the loose false-twisted state is discharged from the yarn discharge port 19g of the hollow guide shaft body 19 while being spun into a bundled fiber yarn (a bundle yarn). The spinning of the bound yarn during the yarn splicing operation is referred to as yarn discharge spinning. Then, after a suitable time has elapsed, the supply of the compressed air from the compressed air supply source to the auxiliary nozzle 19e is stopped, and the injection of the compressed air from the auxiliary nozzle 19e into the yarn passage 19d is stopped. Guide shaft 19
The swirling airflow inside will disappear, and the normal spinning condition will be restored.

As described above, the spinning is restarted, and the produced yarn Y is disposed on the traveling carriage that can run along the spinning device, and the hollow guide shaft body 19 is near the yarn discharge port 19g. Is sucked by the upward rotation of the known suction nozzle that can be rotated to the position, and then the known nozzle such as a knotter or splicer arranged on the traveling carriage is rotated by the downward rotation of the suction nozzle. It is introduced into the yarn splicing device. While being guided to the yarn splicing device by the suction nozzle, the yarn Y is nipped by the nip roller 8a and the delivery roller 8b that form the yarn feeding member 8. On the other hand, the end portion of the yarn Y wound in the package 11 is sucked by a known suction mouth provided on the traveling carriage, and then, as the suction mouth is turned upward, the yarn splicing device is moved to the above-mentioned yarn splicing device. be introduced. Then, the yarn Y generated by the spinning member S and the package 1
After the yarn Y drawn out from No. 1 is introduced into the yarn splicing device, the yarn splicing device is driven to splice both yarns Y, and the yarn splicing operation is completed.

In the normal spinning process, as described above, the fibers constituting the fiber bundle 1 sucked into the spinning chamber 16c1 of the spinning member S are jetted from the nozzle hole 16d of the spinning nozzle member 16 and the hollow guide shaft. Tip 19a of body 19
It is subjected to the action of a swirling air current that is swirling at high speed in the vicinity, is twisted in the direction of the swirling air current while being separated from the fiber bundle 1, and has a real twist shape composed of a core fiber and a wound fiber wound around the core fiber. The yarn Y is sequentially generated. And
From the nozzle hole 16d of the spinning nozzle member 16, the spinning chamber 16
The air injected into c1 has a suction flow in the space 23 due to the suction holes 16g, so that the spinning nozzle member 1
6 through the inner peripheral wall 16b of the space portion 16c and the outer peripheral surface 19a1 of the tip end portion 19a of the hollow guide shaft body 19 through the gap 16g of the spinning nozzle member 16 and the hollow guide 16e. The shaft 19 enters the space 23 surrounded by the shaft mounting member 22 to which the shaft 19 is attached, and then is formed in the cylindrical portion 16e of the spinning nozzle member 16 and is connected to the air suction source via the pipe 18. Suction hole 1
It will be discharged from 6g.

As described above, in the yarn splicing operation, the yarn splicing operation is performed by using only the fiber bundle 1 introduced into the spinning member S without using a seed yarn described later. This is called yarn splicing by spinning.

By the way, in the above-mentioned spinning process, the fibers or floating fibers constituting the fiber bundle 1 may be attached or wrapped around the tip portion 19a of the hollow guide shaft body 19 (referred to as spindle wrap). When fibers or floating fibers are attached or wrapped around the hollow guide shaft body 19, the inner peripheral wall 16b of the space portion 16c formed in the spinning nozzle member 16 and the outer peripheral surface 19a1 of the tip end portion 19a of the hollow guide shaft body 19a1. The gap G and the space portion 23 formed between the space G and the space G and the space G are narrowed. Therefore, the discharge of the air jetted from the nozzle hole 16d of the spinning nozzle member 16 to the space portion 23 is hindered. As described above, when the air jetted from the nozzle holes 16d of the spinning nozzle member 16 is insufficiently discharged to the space 23, the swirling velocity of the swirling airflow in the spinning chamber 16c1 decreases, and the fibers wrapped around the core fiber The wrapping force of is weakened, and a weak yarn portion is generated.

In order to prevent the formation of the above-mentioned weak yarn portion, the spinning nozzle member 16 is passed through the air supply line L connected to the compressed air supply source A1 via the switching valve V1.
From the air ejection hole 16f formed in the cylindrical portion 16e of the hollow cylindrical portion 16e into the space portion 23 surrounded by the cylindrical portion 16e of the spinning nozzle member 16 and the shaft body mounting member 22 to which the hollow guide shaft body 19 is attached. Compressed air is jetted toward the outer peripheral surface of the hollow guide shaft body 19 located on the shaft body attachment member 22 side. In this way, by injecting the compressed air into the space portion 23, it is possible to change (control) the suction air flow to the suction holes 16g and change the air flow in the space portion 23. The air jetted from the nozzle hole 16d of the spinning nozzle member 16 is formed between the inner peripheral wall 16b of the space 16c formed in the spinning nozzle member 16 and the outer peripheral surface 19a1 of the tip end portion 19a of the hollow guide shaft body 19. It is possible to more smoothly flow out to the suction hole 16g through the formed gap G and the space portion 23.

In addition, the hollow guide shaft 19 is passed through the air ejection hole 16f formed in the cylindrical portion 16e of the spinning nozzle member 16.
By injecting compressed air toward the suction hole 1
The space portion 2 is changed (controlled) by changing the suction air flow to 6 g.
Since it is possible to change the flow velocity of the air in the hollow guide shaft body 3, it is possible to keep away from the hollow guide shaft body 19 fibers or floating fibers that are going to be wound around the tip end portion 19a of the hollow guide shaft body 19. It is possible to prevent the fibers or floating fibers from adhering to or wrapping around the body 19. Therefore, the inner peripheral wall 16 of the space 16c formed in the spinning nozzle member 16 is
b and the outer peripheral surface 19a of the distal end portion 19a of the hollow guide shaft body 19
The gap G and the space 23 formed between the first and second nozzles 1 do not become narrow, and the air injected from the nozzle hole 16d of the spinning nozzle member 16 is sufficiently discharged to the space 23. It is possible to prevent the weak yarn portion from being generated.

The cylindrical portion 16e of the spinning nozzle member 16 described above.
By injecting compressed air into the space 23 from the air ejection hole 16f bored in the space 24 at all times, it is possible to reliably attach or wind the fibers or floating fibers to the hollow guide shaft body 19. Can be configured to prevent. From the viewpoint of reducing the consumption of compressed air and saving energy, the compressed air may be intermittently ejected from the air ejection holes 16f into the space 23. Such intermittent injection of compressed air can be performed by repeating the open state and the closed state of the switching valve V1 at predetermined intervals according to a command from the control device C1.

Further, unlike the embodiment described later, the above-described yarn splicing is a yarn splicing that does not use seed yarn and is performed by yarn discharge spinning. Therefore, the influence of the compressed air injected from the air ejection holes 16f on the seed yarn is taken into consideration. Since it is not necessary, it is not necessary to stop the injection of the compressed air from the air ejection hole 16f during the yarn splicing work unless the consumption of the compressed air is reduced or energy saving is considered.

Next, another embodiment of the present invention will be described with reference to FIGS.

The hollow guide shaft body 190 used in this embodiment is different from the hollow guide shaft body 19 used in the above-mentioned embodiment, and the internal air passage 19 is different.
b is not formed, and therefore, the connector 20 and the pipe 21 connected to the compressed air supply source are not provided.
The rear end portion of the hollow guide shaft body 190 is configured as a trumpet-shaped rear end portion 190a for facilitating the insertion of the seed yarn Y ′ into the hollow guide shaft body 190, as described later. A suction pipe 24 connected to a suction air source (not shown) is provided between the fiber introduction block 15 and the front roller 7 and below the introduction hole 15a of the fiber introduction block 15. There is.

Except for the constitution described above, the constitution is substantially the same as that of the above-mentioned embodiment, so that the same reference numerals will be used for the same constitution members and the detailed description thereof will be omitted. The process of producing the yarn Y is also substantially the same, and therefore its explanation is omitted.

The yarn clearer 10 is used to remove yarn defects such as slabs.
Is detected and the yarn breakage occurs due to yarn cutting or the like, the driving of the back roller 4 and the third roller 5 is stopped, and the supply of the fiber bundle 1 is stopped. Then, the fiber bundle 1 is cut between the stopped third roller 5 and the constantly rotating second roller 6, and the tip end of the fiber bundle 1 is gripped by the stopped third roller 5. There is. Then, after an appropriate time has passed, the spinning nozzle member 1
The injection of compressed air from the nozzle holes 16d of No. 6 is stopped.
Further, the nip roller 8a that constitutes the yarn feeding member 8 is
It is rotated upward and separated from the delivery roller 8b.

Next, a pair of driving ends of the seed yarn Y'wound into the winding package 11 and pulled out from the winding package by a known suction mouth or the seed yarn Y'drawn from a separately prepared package is driven. The head P ′ of the transfer arm member P gripped by the rollers p1 and p2 is arranged near the yarn discharge port 190b of the hollow guide shaft body 190. After that, the drive rollers p1 and p2 are driven to rotate, and the seed yarn Y ′ is
The seed yarn Y ′ is sent to the hollow guide shaft body 190, and the seed yarn Y ′ is fed to the yarn passage 190c of the hollow guide shaft body 190, the spinning nozzle member 16 and the fiber introducing block 15 by using a suitable threading means utilizing an air flow. While passing through the introduction hole 15a, the seed yarn Y ′ that has come out from the introduction hole 15a is suction-held in the suction tube 24 described above, as shown in FIG.

Next, the back roller 4 which has been stopped
The driving of the third roller 5 is restarted, and the fiber bundle 1 held between the back roller 4 and the third roller 5 is transferred at substantially the same time as the nozzle hole 16 of the spinning nozzle member 16.
The injection of compressed air from d is restarted. Spinning nozzle member 1
Substantially at the same time as the restart of the injection of compressed air from the nozzle holes 16d of No. 6, the nip roller 8a is brought into contact with the delivery roller 8b which is constantly driven to rotate, and the seed yarn Y ′ is transferred in the winding member W direction. Then, the fiber bundle 1 sent out from the front roller 7 becomes the spinning chamber 16c1 of the spinning member S.
The yarn splicing is performed while the fibers constituting the fiber bundle 1 are entwined with the seed yarn Y ′ that is introduced into the suction tube 24 and is drawn out from the suction tube 24.

In the yarn splicing operation using the seed yarn Y'described above, the yarn splicing start signal E is used as the yarn clearer 10
The yarn defect detection signal of No. 1 to the control device C1 described above,
Based on the yarn splicing start signal E, the switching valve V1 to which the air supply line L1 is connected is configured to be closed by a command from the control device C1. Even during the yarn splicing operation, the shaft attachment member to which the hollow guide shaft 19 and the tubular portion 16e of the spinning nozzle member 16 are attached through the air ejection holes 16f formed in the tubular portion 16e of the spinning nozzle member 16. When compressed air is jetted into the space 23 surrounded by 22 and 22, the seed yarn Y'is swayed under the influence of the compressed air jetted from the air jet holes 16f, and the success rate of yarn splicing is reduced. Will be done.

As described above, during the yarn splicing operation, the change of the flow velocity of the air in the space portion 23 is stopped so that, for example, the switching valve V1 to which the air supply line L1 is connected.
Is closed, and the cylinder portion 1 of the spinning nozzle member 16 is inserted through the air ejection hole 16f formed in the cylinder portion 16e of the spinning nozzle member 16.
It is possible to prevent the seed yarn Y ′ from wobbling by stopping the injection of compressed air into the space 23 surrounded by the shaft mounting member 22 to which the hollow guide shaft 19 is attached. Yes, thus increasing the success rate of yarn splicing.
The restart of the injection of compressed air from the air ejection holes 16f into the space 23 is performed at least after the yarn splicing operation is completed, but preferably, the air spout is performed after the yarn splicing part has been wound into the package 11. Space 23 from hole 16f
It is preferable to restart the injection of compressed air into the interior. Therefore, the air ejection holes 16f of the spinning nozzle member 16
The injection of the compressed air from the machine is restarted by a timer or the like after a predetermined time elapses after the injection of the compressed air from the air ejection hole 16f is stopped, or the normal spinning is restarted by an appropriate detecting means. Alternatively, the control device C1 may be configured to instruct the restart of the injection of compressed air from the air ejection holes 16f of the spinning nozzle member 16 based on the detection signal.

In the case of this embodiment, it is necessary to stop the injection of compressed air from the air ejection holes 16f of the spinning nozzle member 16 at least when the seed yarn Y'is the yarn passage 190c of the hollow guide shaft body 190. From the reverse running toward the spinning nozzle member 16 to the completion of the yarn splicing operation and the restart of normal spinning.

Similar to the above-described embodiment, in the normal spinning process, the compressed air is constantly jetted from the air jet holes 16f formed in the tubular portion 16e of the spinning nozzle member 16 to the space portion 23. It is preferable that the hollow guide shaft body 190 is reliably configured to be prevented from adhering or winding around the hollow guide shaft body 190 by being configured so as to perform. However, from the viewpoint of reducing the consumption of compressed air and saving energy, the compressed air may be intermittently injected from the air ejection holes 16f into the space 23. Such intermittent injection of compressed air can be performed by repeating the open state and the closed state of the switching valve V1 at predetermined intervals according to a command from the control device C1.

In the above embodiment, the flow velocity in the space portion 23 is changed so that the fibers do not approach the outer circumferences of the hollow guide shafts 19 and 190 and are not wound around. Means for arranging air injection holes 16g
Although the compressed air is jetted from the suction air flow control means, the suction air flow control means controls the air suction source continuously provided from the suction hole 16g through the pipe 18, and the suction air By controlling the suction source, the suction force in the suction hole 16g is changed, and the hollow guide shafts 19, 19 of the fiber are changed.
It is also possible to prevent the outer circumference from approaching and winding.

As described above, the suction hole 1 in the space 23
The configuration in which the suction air flow control means is arranged to change (control) the suction air flow to 6 g to change the flow velocity in the space 23 is used when the fiber bundle 1 contains many long fibers. Especially effective. For example, when the fiber bundle 1 is composed of a small amount of short fibers such as cotton and a large amount of long fibers of chemical fibers, or 100% long fibers of chemical fibers, the fiber length becomes long, The hollow guide shafts 19 and 190 approach the outer peripheries of the hollow guide shafts, so that the hollow guide shafts 19 and 190 are easily wound. However, by applying the above-described configuration, the generation of the weak yarn portion can be reliably prevented. Moreover, as suction air flow control means,
Air suction source (blower) if compressed air injection means is installed
Since the flow velocity of the air in the space portion 23 is changed without changing the capacity of the device, it is possible to avoid an increase in the size of the equipment.

[0047]

Since the present invention has the constitution described above, it has the following effects.

By arranging the suction air flow control means for controlling the suction air flow to the suction holes, it is possible to prevent the fibers from adhering to or wrapping around the hollow guide shaft body.
It is possible to prevent the generation of weak yarn portions with reduced yarn strength.

Since the compressed air injecting means for injecting the compressed air toward the outer peripheral surface of the hollow guide shaft located in the space from the position facing the suction hole toward the shaft mounting member side is arranged, the size of the equipment is increased. It is possible to prevent the fibers from adhering to or wrapping around the hollow guide shaft while avoiding such problems.
It is possible to prevent the generation of weak yarn portions with reduced yarn strength.

In addition to the spinning nozzle member having a nozzle hole and the hollow guide shaft,
In a spinning device for splicing a yarn by inserting a seed yarn in the order of a yarn passage of a hollow guide shaft and a spinning nozzle, compressed air injecting means for injecting compressed air toward the hollow guide shaft is provided, and at least Since the control device for stopping the injection of the compressed air by the compressed air injecting means is provided during the yarn splicing operation, the seed yarn does not wobble under the influence of the compressed air. Improves success rate.

Since the compressed air is intermittently jetted toward the hollow guide shaft, it is possible to reduce the consumption of the compressed air and save energy.

[Brief description of drawings]

FIG. 1 is a perspective view of a spinning device of the present invention.

FIG. 2 is a side view of a main part including a side cross section of a spinning member that constitutes the spinning device of the present invention.

FIG. 3 is a side view including a partial cross section of another embodiment of the spinning device of the present invention.

FIG. 4 is a side view similar to FIG.

[Explanation of symbols]

D: Draft device S ・ ・ ・ ・ ・ ・ ・ ・ Spinning material 1 ・ ・ ・ ・ ・ ・ ・ ・ Fiber bundle 8 ・ ・ ・ ・ ・ ・ ・ ・ Thread feed member 11 ... Package 16 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Spinning nozzle member 16d ... Nozzle hole 19, 190 --- Hollow guide shaft 19e ... Auxiliary nozzle

Claims (4)

[Claims] 1. A spinning nozzle member having a nozzle hole, and a hollow guide shaft body attached to a side opposite to the spinning nozzle member side by a shaft body mounting member, the spinning nozzle member and the shaft body mounting member. In a spinning device in which a space surrounded by a member is formed and a suction hole for generating a suction flow is provided in the space, suction air flow control means for controlling the suction air flow to the suction hole is provided. A spinning device characterized by: 2. As the control means, compressed air injecting means for injecting compressed air from the position facing the suction hole toward the outer peripheral surface of the hollow guide shaft located in the space toward the shaft body mounting member is arranged. The spinning device according to claim 1, which is provided. 3. A spinning nozzle member having a nozzle hole and a hollow guide shaft body are provided, and in a yarn splicing operation,
In a spinning device that performs yarn splicing by inserting a seed yarn in the order of a yarn passage of a hollow guide shaft and a spinning nozzle, at least a compressed air injecting unit that injects compressed air toward the hollow guide shaft is provided. The spinning device according to claim 2, further comprising a control device for stopping the injection of the compressed air by the compressed air injecting means during the yarn splicing operation. 4. The spinning device according to claim 2, wherein compressed air is intermittently jetted toward the hollow guide shaft.