JP2002038340A - Splicing apparatus for spinning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn splicing apparatus capable of discharging compressed air remaining in a pipe connected to an air ejection pipe into atmosphere through an exhaustion port and accordingly free from the troubles of a conventional tyeing apparatus to hinder the feeding of a sliver into a twister by the discharge of compressed air remaining in the pipe, and enabling the tyeing with a yarn joint having a definite length and high strength. SOLUTION: The tyeing apparatus of a spinning frame has an air ejection pipe 16 for ejecting compressed air in the direction of a sliver introducing port 7c of a twister T to remove a part of the tip end part 6a of the sliver 6 supplied from a front roller 4 by the restart of draft rollers 1, 2 from stopped state. In the above apparatus, the air ejection pipe is connected to a three-way solenoid value V having an exhaustion port 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a spinning machine,
The present invention relates to a yarn splicing device for a spinning machine for splicing cut yarns.

[0002]

2. Description of the Related Art First, a conventional piecing apparatus for a spinning machine will be described with reference to FIGS.

[0003] D is a draft device.
A linear drafting device D is shown. Draft device D
Is composed of a back roller 1, a third roller 2, a middle roller 3 on which an apron belt is mounted, and a front roller 4. Reference numeral 5 denotes a sliver guide having a trumpet shape. The sliver 6 inserted into the sliver guide 5 and supplied to the draft device D is a draft device D.
Then, the yarn Y is generated by being supplied to a twisting device T described later.

The twisting device T includes a nozzle 7 for generating a swirling air flow by compressed air injection, a nozzle block 8 for supporting the nozzle, and an insertion hole 9b having a tip 9a positioned inside 7a of the nozzle 7. Hollow guide shaft (spindle) 9 having a hollow guide shaft support member 10 for supporting the same.
It is mainly composed of The nozzle 7 has a plurality of air injection holes 7b for generating a swirling intake flow. Reference numeral 11 denotes an air chamber formed between the nozzle block 8 and the hollow guide shaft support member 10, and an air chamber 11
Is connected via a suction hole 12 to an air suction source (not shown) that sucks air at a low suction pressure, and serves as a relief hole for air ejected from the air ejection hole 7b of the nozzle 7 during spinning. In addition to acting, it functions to suck and remove floating fibers and the like generated in the air chamber 11 during spinning.

[0005] Reference numeral 13 denotes a cylinder.
The lower frame 10a of the hollow guide shaft support member 10 is attached to the tip of the third piston rod 14. Therefore, by operating the cylinder 13 to move the hollow guide shaft support member 10 left and right, the hollow guide shaft support member 10 can be separated from the nozzle block 8 or coupled to the nozzle block 8. It is configured as follows.

Reference numeral 15 denotes a suction port 15a between the sliver introduction port 7c of the nozzle 7 and the front roller 4;
Further, it is a suction pipe arranged below the sliver introduction port 7c of the nozzle 7, and is connected to a suction air source (not shown). Reference numeral 16 denotes an air ejection pipe in which the air ejection port 16a faces the sliver introduction port 7c of the nozzle 7 and faces the suction pipe 15 with the sliver introduction port 7c of the nozzle 7 interposed therebetween. The pipe 17 connected to the pipe 16 is connected to a compressed air supply 19 via a two-way valve 18 having a known pilot piston. Reference numeral 20 denotes a nip roller which is freely rotatable with respect to a delivery roller 21 which is constantly driven to rotate. The nip roller 20 contacts the delivery roller 21 with the nip roller 20 to take up a generated yarn Y on a winding device (not shown). It is configured to transfer in a direction.

In an operating state in which the spinning machine is producing the yarn Y, the sliver 6 supplied to the draft device D from the sliver guide 5 is drawn by the draft device D and then twisted by the twist device T. Thus, the yarn Y is generated. That is, the fiber constituting the sliver 6 supplied to the nozzle 7 of the twisting device T is swirled by the swirling airflow jetted from the air jetting hole 7b, and the tip 9
The thread Y enters the insertion hole 9b of the hollow guide shaft body 9 from a.

Next, the piecing operation will be described with reference to FIGS.

When a yarn break occurs, a detection signal is generated from a yarn break detection sensor (not shown), and accordingly, the back roller 1 and the third roller are connected via a clutch (not shown) connected to the back roller 1. The driving of the roller 2 is stopped, and the supply of the sliver 6 is stopped. The twisting device T is still operating. Between the stopped third roller 2 and the middle roller 3 that continues to be driven, the sliver 6 has its tip tapered off. Further, the sliver of the twisted twisting device T that has been cut is formed into a yarn by the twisting device T, and the generated yarn is transferred to the delivery roller 21 and the nip roller 2.
The suction pipe is removed by a suction pipe such as a slack tube (not shown) provided on the downstream side of the suction pipe. After the production of the yarn by the sliver on the twisted twisting device T side that has been cut off, the ejection of air from the air injection hole 7b of the nozzle 7 is stopped, and the operation of the twisting device T is stopped. After the operation of the twisting device T is stopped and the yarn has been generated, the nip roller 20 is separated from the delivery roller 21.

Next, the cylinder 13 is operated, the piston rod 14 is advanced, and the hollow guide shaft support member 10 is separated from the nozzle block 8. In addition, the seed yarn Y ′ which is wound in the winding package and pulled out from the winding package by a known suction mouth.
Alternatively, the head A 'of the transfer arm member A holding the leading end of the seed yarn Y' pulled out from a separately prepared package by a pair of drive rollers a1 and a2.
Is arranged close to the yarn discharge port 9 c of the hollow guide shaft 9. On the other hand, between the separated hollow guide shaft support member 10 and the nozzle block 8, the suction head S ′ of the air sucker member S and the distal end 9 a of the hollow guide shaft 9 are sucked by the suction head S ′. It is arranged so as to approach or contact the hole s1. Thereafter, the suction head S 'is operated to generate a suction air flow from the thread discharge port 9c toward the tip 9a in the insertion hole 9b of the hollow guide shaft 9, and the drive rollers a1, a2 of the transfer arm member A are driven. To operate the hollow guide shaft 9 as shown in FIG.
The seed yarn Y 'is inserted through the insertion hole 9b.

Next, while lowering the air sucker member S, operating the cylinder 13 and retracting the piston rod 14, the hollow guide shaft support member 10 and the nozzle block 8 are connected to each other as shown in FIG. To join. Then, the pilot piston of the two-way valve 18 is actuated, and the compressed air supply 19
Compressed air from the air outlet 16a of the air outlet tube 16
From the tip 7a of the hollow guide shaft 9 into the sliver inlet 7c of the nozzle 7.
The seed yarn Y ′ inserted into the insertion hole 9b of the hollow guide shaft 9 is generated by the air flow.
Is discharged from the sliver inlet 7c of the nozzle 7, and the seed yarn Y 'discharged from the sliver inlet 7c of the nozzle 7 is inserted into the suction pipe 15 in which the suction air flow is generated. At this time, the drive rollers a1 and a2 of the transfer arm member A are rotated appropriately so that the seed yarn Y 'is discharged from the sliver inlet 7c of the nozzle 7. After the seed yarn Y 'is inserted through the insertion hole 9b of the hollow guide shaft 9 and the nozzle 7, in other words, after the seed yarn Y' is passed through the twisting device T, the transfer arm member A Is returned to a predetermined standby position.

By the way, when the yarn breaks, the sliver 6 cut between the stopped third roller 2 and the middle roller 3 which continues to be driven has an elongated tapered tip, and thus the tip is elongated. The cut end of the tapered sliver 6 is the middle roller 3
Further, the draft is further drafted by the front roller 4, and the tapered portion 6a is further lengthened as shown in FIG. If the tapered portion 6a is long as described above, it is natural that the seam portion becomes long, which is not preferable. If the tapered portion 6a is long, the seed yarn Y 'must be made longer, and at the time of piecing, the tip Ya' of the seed yarn Y '
However, when it is located in the middle of the tapered portion 6a, a thin seam portion is formed, the strength of the seam of the yarn decreases, and the yarn breakage occurs again at the seam portion.

In order to prevent the above-mentioned trouble, compressed air jetted from the air jet port 16a of the air jet pipe 16 is blown to the tapered portion 6a of the sliver 6, and a part of the tapered portion 6a is blown. Is blown off. Hereinafter, this operation will be described.

From the air ejection port 16a of the air ejection pipe 16,
While the compressed air is being blown out and while the operation of the twisting device T is stopped, the driving of the stopped back roller 1 and third roller 2 is resumed, and the back roller 1 and third roller 2 and the sliver 6 sandwiched between the middle roller 3 and the front roller 4
The sliver 6 stretched by the middle roller 3 and the front roller 4 and stretched by the draft device D is supplied to the inside 7a of the nozzle 7 from the sliver inlet 7c of the nozzle 7 constituting the twisting device T. However, a part of the tapered portion 6a of the sliver 6 is blown off by the compressed air that is jetted from the air jet port 16a of the air jet pipe 16. The tapered portion 6a of the sliver 6 that has been blown off and removed sucks the seed yarn Y 'having a predetermined length, and is sucked and removed by the suction pipe 15 that stores the seed yarn Y'.

As described above, after removing the elongated tapered sliver 6, the pilot piston of the two-way valve 18 is operated to stop the supply of compressed air from the compressed air supply source 19, The ejection of the compressed air from the air ejection port 16a of the air ejection pipe 16 is stopped. At about the same time as the stop of the injection of the compressed air, the twisting device T is restarted, that is, the injection of the compressed air from the air injection hole 7b of the nozzle 7 is restarted.
Immediately after the compressed air is blown from b, delivery roller 2
1 is brought into contact with the delivery roller 21, and the seed yarn Y ′ is nipped by the nip roller 20 and the delivery roller 21.
The sheet is fed in the direction of the winding device (not shown). When the spinning is resumed in this manner, the fibers constituting the sliver 6 sent out from the front roller 4 and having the tapered portion 6a become shorter become the sliver inlet 7c of the nozzle 7.
And at the inside 7a of the nozzle 7,
The yarn constituting the sliver is entangled with the seed yarn Y 'drawn out from the suction pipe 15, and the piecing is performed.

In the above-described piecing operation, the drive timing of the back roller 1 and the third roller 2, the timing of jetting compressed air from the air jet pipe 16, the driving of the twisting device T, that is, the timing from the air jet hole 7b of the nozzle 7 FIG. 8 shows an example of the timing of jetting the compressed air and the timing of contact of the nip roller 20 separating from the delivery roller 21 with the delivery roller 21. That is, at the time of the piecing operation, the back roller 1 and the third roller 2 are driven again in a state where the compressed air is jetted from the air jet pipe 16 to restart the transfer of the sliver 6, and the sliver 6 is tapered. A portion of the portion 6a is connected to the air ejection pipe 16
The compressed air blown out from the air outlet 16a blows off the air. After the tapered portion 6a of the sliver 6 is removed by the compressed air being ejected from the air ejection port 16a of the air ejection pipe 16, the pilot piston of the two-way valve 18 is actuated to release the compressed air from the compressed air supply source 19. At the same time as the supply is stopped, the twisting device T
The compressed air is ejected from the air injection hole 7b of the nozzle 7 constituting the nozzle 7 to drive the twisting device T again, and immediately thereafter, the nip roller 20 separated from the delivery roller 21 is delivered to the delivery roller 21. Then, the seed yarn Y ′ is nipped by the nip roller 20 and the delivery roller 21 to restart the transfer of the seed yarn Y ′.

[0017]

By the way, in splicing, the length of the seam is always constant and the strength of the seam is large. It is important that the strength of the seam is constant between the weights. For this purpose, as described above, when the pilot piston of the two-way valve 18 is operated and the two-way valve 18 is closed, the compressed air is immediately ejected from the air ejection port 16 a of the air ejection pipe 16. Is stopped, the twisting device T is driven again, and the air injection holes 7 of the nozzle 7 are
It is important to blow out the compressed air from b. That is, as shown by the solid line in FIG.
It is important that the ejection of the compressed air from the air ejection port 16a is instantaneously completed, and at the same time, the ejection of the compressed air from the air ejection hole 7b of the nozzle 7 is restarted. For example, even if the ejection of the compressed air from the air ejection hole 7b of the nozzle 7 is restarted, the air ejection port 16a of the air ejection pipe 16 is still
Supply of the sliver 6 to the twisting device T is blocked, and the seed yarn Y ′ stored in the suction pipe 15 is wastefully discharged from the nip roller 20 and the delivery roller 21. As a result, the length of the seed yarn Y 'in which the fibers constituting the sliver are entangled with each other is shortened, so that the length of the seam of the yarn is shortened, and the strength of the seam of the yarn is reduced.

In the above-described conventional piecing apparatus for a spinning machine, even if the pilot piston of the two-way valve 18 is operated to close the two-way valve 18, the air ejection port 16a of the air ejection pipe 16 remains for a while. Compressed air is spouted from the nozzle, and there is a problem that the length of the seam of the yarn varies, the strength of the seam is weak, and the yarn breaks again.

Even if the two-way valve 18 is closed, one cause of compressed air being ejected from the air ejection port 16a of the air ejection pipe 16 for a while is that in the conventional splicing apparatus of a spinning machine, the air ejection pipe The length of the pipe 17 connecting the two-way valve 18 to the two-way valve 18 is, for example, 70 cm to 80 c.
m, the pipe 1 connecting the air ejection pipe 16 and the two-way valve 18 even when the two-way valve 18 is closed.
This is because the compressed air existing in the air outlet 7 is exhausted from the air outlet 16a of the air outlet pipe 16 until the compressed air returns to substantially the atmospheric pressure. Therefore, as shown by a two-dot chain line in FIG. The ejection of the compressed air from the air ejection port 16a of the ejection pipe 16 is not instantaneously completed, but gradually returns to the atmospheric pressure along the inclined line L. Of course, since there is a variation in the inclined line L, the length of the seam of the yarn and the strength of the seam vary.

Another cause is that a two-way valve 18 having a pilot piston as a valve for supplying compressed air from a compressed air supply source 19 to the air ejection pipe 16.
Is used. Compressed air supply source 1
9 is operated from a closed state to an open state by connecting a normal open / close valve connected to the compressed air supply source 19.
Compressed air is supplied to the two-way valve 18 from the valve, and the compressed air supplied to the two-way valve 18 urges the pilot piston of the two-way valve 18 in the closing direction of the pilot piston. In the direction in which the compressed air flows, open the two-way valve 18 and allow the compressed air from the compressed air supply 19 to
The two-way valve 18 is configured to supply the air to the air ejection pipe 16 and to operate the normal open / close valve connected to the compressed air supply source 19 from the open state to the closed state so as to move toward the two-way valve 18. Is stopped, the pilot piston of the two-way valve 18 is moved in the closing direction of the pilot piston by the urging force of the coil spring, the two-way valve 18 is closed, and the compressed air supply source 19 Although it is configured to stop the supply of the compressed air to the air ejection pipe 16, the two-way valve 18
Is performed by moving the pilot piston in the closing direction by the urging force of the coil spring, so that the closing is not instantaneous and takes a predetermined time.

An object of the present invention is to solve the problems of the above-described conventional piecing apparatus of a spinning machine.

[0022]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to remove a part of the sliver tip supplied from the front roller by re-driving the stopped draft roller. In a yarn splicing device for a spinning machine having an air ejection tube for ejecting compressed air in a direction of a sliver inlet of a twisting device, first, the air ejection tube is connected to a three-way electromagnetic valve having an exhaust port. The second is that the spool of the three-way solenoid valve is a direct acting type, and the third is that the three-way solenoid valve is disposed close to the air ejection pipe. is there.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. However, the present invention is not limited to the embodiment unless it exceeds the gist of the present invention. Note that, except for having a DC power supply for exciting a solenoid coil that operates a spool of the direct-acting three-way electromagnetic valve or the three-way electromagnetic valve described later, Since the structures are substantially the same, the same reference numerals are used for the same constituent members, and detailed description thereof is omitted.

[0024]

In the embodiment of the present invention, a direct-acting three-way solenoid valve V is used in place of the two-way valve 18 having a pilot piston used in the above-described conventional piecing apparatus of a spinning machine. Have been.

The spool 22 of the three-way solenoid valve V has
Flanges 22a, 22b, 2
An operating shaft 23 made of a magnetic material is integrally attached to the spool 22. An exhaust port 25 communicating with the atmosphere is formed in the cylinder 24 of the three-way electromagnetic valve V, and the cylinder 24 of the three-way electromagnetic valve V is
An outlet port 26 communicating with the air ejection pipe 16 is formed, and the cylinder 24 of the three-way solenoid valve V is further connected to the above-described compressed air supply source 19 through a pipe 27.
An inlet port 28 is formed which communicates with the inlet port 28. A solenoid coil 29 is disposed around the operating shaft 23 attached to the spool 22.
Are connected to a DC power supply 30 via a suitable switch. Further, a return spring 31 is disposed between the spool 22 and the end of the cylinder 24 located on the opposite side of the solenoid coil 29.

In a normal spinning operation, as shown in FIG.
No current is supplied to the spool 22. Accordingly, the spool 22 is moved in the direction of the solenoid coil 29 by the urging force of the return spring 31, so that the flange 22a on the return spring 31 side of the spool 22 is The exhaust port 25 and the outlet port 26 are located in the air chamber 32 located between the flange 22b and the flange 22b at the center and the flange 22c at the solenoid coil 29 side. The air chamber 33 is configured so that the inlet port 28 is located. Therefore, the compressed air from the compressed air supply source 19 stops in the air chamber 33 located between the central flange 22b and the flange 22c on the solenoid coil 29 side. No compressed air is supplied.

As described above, when supplying compressed air to the air ejection pipe 16 during the piecing operation, a switch of the DC power supply 30 is turned on, a current is passed through the solenoid coil 29, and the solenoid coil 29 is excited. As a result, the operating shaft 23 integrally attached to the spool 22
Against the return spring 31, the return spring 31
2, the outlet port 26 and the inlet port 28 are provided in the air chamber 33 located between the central flange 22b and the flange 22c on the solenoid coil 29 side, as shown in FIG. And are located. In this manner, the center flange 22b and the solenoid coil 29 side flange 22c are provided.
The outlet port 26 and the inlet port 28 are located in the air chamber 33 positioned between the outlet port 26 and the outlet port 26 so that the compressed air from the outlet port 26
Is supplied to the air ejection pipe 16 and is ejected from the air ejection port 16 a of the air ejection pipe 16. The piecing operation is the same as the operation of the above-described conventional piecing device of a spinning machine, and therefore the description thereof is omitted.

As described above, the driving of the back roller 1 and the third roller 2 which have been stopped is restarted, and the sliver 6 stretched by the draft device D is rotated by the twisting device T.
When approaching the vicinity of the sliver introduction port 7c of the nozzle 7 constituting a part of the sliver 6, a part of the tapered portion 6a of the sliver 6 is blown off by the compressed air jetted from the air jet 16a of the air jet pipe 16. Removed. Next, when the DC power supply 30 is turned off to cut off the current to the solenoid coil 29 and return the spool 2 to the original standby position shown in FIG. 28 is the central flange 2
2b and the flange 22c on the solenoid coil 29 side, and the exhaust port 25 and the outlet port 26 are connected to the flange 22a on the return spring 31 side of the spool 22.
Since it is located in the air chamber 32 located between the central portion and the central flange portion 22b, the supply of the compressed air to the air ejection pipe 16 is stopped. The compressed air remaining in the pipe 17 connected to the air ejection pipe 16 is exhausted from the air chamber 32 located between the flange 22a on the return spring 31 side of the spool 22 and the central flange 22b. Since the air is discharged to the atmosphere via the port 25, the air is discharged from the pipe 17 instantaneously,
It is not discharged from 6a. Therefore, the DC power supply 30
At the same time as interrupting the current to the solenoid coil 29 from
Restart the twisting device T, that is, the air injection hole 7b of the nozzle 7
Of the compressed air remaining in the pipe 17 from the air ejection port 16a of the air ejection pipe 16 as in the splicing operation in the conventional splicing device of the spinning machine even when the ejection of the compressed air from Thus, the introduction of the nozzle 7 of the sliver 6 into the sliver introduction port 7c is not prevented.

Further, the spool 22 of the three-way solenoid valve V of this embodiment has an operating shaft 23 integrally attached to the spool 22, and a current is supplied to and cut off from the solenoid coil 29 to the operating shaft 23. Spool 22 integrally attached
Is moved, and the supply of compressed air to the air ejection pipe 16 is stopped. This is a so-called direct-acting valve, so that the response performance of the supply stop of compressed air to the air ejection pipe 16 is improved. Rapid supply of compressed air and instantaneous stoppage of compressed air can be realized.

Further, in this embodiment, the outlet port 2
6 and the length of the pipe 17 connecting the air ejection pipe 16
The length is made as short as possible compared to the length of the pipe 17 of the piecing device of the conventional spinning machine. As an example, the length of the pipe 17 of the piecing device of the conventional spinning machine is 70 cm to 80 cm.
In this embodiment, the distance is 20 cm or less. As described above, by reducing the length of the pipe 17, the amount of the compressed air remaining in the pipe 17 can be reduced.
It can be discharged from the pipe 17 more instantaneously.

In order to suppress a surge voltage generated in the power supply line by turning on / off a switch of the DC power supply, the power supply line may be grounded via a surge suppression element called a surge absorber or a surge killer. Is being done. When a diode having a large surge suppression effect is used as such a surge killer, the shutoff characteristics of the three-way solenoid valve V, that is, the shutoff response time becomes longer,
In addition, variation between the weights increases. Therefore, in this embodiment, a Zener diode (constant voltage diode) having a small surge suppression effect is used as a surge killer. As described above, by using the Zener diode as the surge killer, the shutoff characteristics of the three-way solenoid valve V, that is, the shutoff response time can be shortened, and the variation between the weights can be reduced. For example, the shut-off response time of the three-way solenoid valve V when a diode is used as a surge killer is approximately 20 microseconds (ms), but when a Zener diode is used as a surge killer, approximately 5 microseconds (ms). ms).

[0032]

Since the present invention is configured as described above, the following effects can be obtained.

Since the air ejection pipe is connected to the three-way solenoid valve having the exhaust port, the compressed air remaining in the pipe connected to the air ejection pipe can be discharged to the atmosphere via the exhaust port. Therefore, unlike the conventional piecing apparatus of a spinning machine, the discharge of the compressed air remaining in the pipe from the air ejection pipe does not hinder the introduction of the sliver into the twisting apparatus. Therefore, it is possible to always perform a yarn splicing in which the length of the seam of the yarn is constant and the strength of the seam is large.

Since the spool of the three-way solenoid valve is of a direct acting type, the response performance of stopping the supply of the compressed air to the air ejection pipe is improved, and the quick supply of the compressed air and the instantaneous stop of the compressed air are realized. Therefore, it is possible to perform splicing in which the length of the seam of the yarn is constant and the strength of the seam is large.

Since the three-way solenoid valve is arranged close to the air ejection pipe, the length of the pipe connecting the air ejection pipe and the three-way solenoid valve is reduced, and therefore, the amount of residual compressed air in the pipe is reduced. Therefore, it is possible to surely prevent the introduction of the sliver into the twisting device due to the discharge of the compressed air remaining in the pipe from the air ejection pipe.

[Brief description of the drawings]

FIG. 1 is a side view including a partial cross section of a spinning machine as an example of a piecing apparatus for a spinning machine according to the present invention.

FIG. 2 is a side view including a partial cross section of a spinning machine as an example of the piecing apparatus of the spinning machine according to the present invention.

FIG. 3 is a side view including a partial cross section of a spinning machine of a conventional piecing apparatus of a spinning machine.

FIG. 4 is a side view including a partial cross section of the spinning machine of the conventional piecing apparatus of the spinning machine.

FIG. 5 is a side view including a partial cross section of the spinning machine of the conventional piecing apparatus of the spinning machine.

FIG. 6 is a side view including a partial cross section of the spinning machine of the conventional piecing apparatus of the spinning machine.

FIG. 7 is a schematic side view of the seed yarn and the tip of the sliver.

FIG. 8 is a drive timing of a back roller and a third roller in a piecing operation, a timing of jetting compressed air from an air jet pipe, a timing of jetting compressed air of a nozzle of a twisting device, and a delivery roller of a nip roller. FIG. 4 is a chart showing the contact timing of the contact.

[Explanation of symbols]

 D: Draft device T: Twisting device V: Three-way solenoid valve Y ': Seed thread 7: · Nozzle 8 ······ Nozzle block 9 ··········································································································································· 18 ..Suction tube 19 ... Compressed air supply source 30 ... DC power supply

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshio Yamauchi 136 Takeda-Mukoshirocho, Fushimi-ku, Kyoto-shi, Kyoto Prefecture F-term in the headquarters of Murata Machinery Co., Ltd. 4L056 AA14 AA19 CB04 CB13

Claims (3)

[Claims] An air for jetting compressed air in a direction toward a sliver inlet of a twisting device in order to remove a part of a tip of a sliver supplied from a front roller by re-driving a draft roller which has been stopped. A splicing apparatus for a spinning machine having an ejection pipe, wherein the air ejection pipe is connected to a three-way electromagnetic valve having an exhaust port. 2. The splicing device for a spinning machine according to claim 1, wherein the spool of the three-way electromagnetic valve is a direct acting type. 3. The splicing device for a spinning machine according to claim 1, wherein the three-way electromagnetic valve is disposed close to the air ejection pipe.