JP2001073236A - Spinning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of ends-down on a cleaning operation, and improve the operation efficiency of a frame. SOLUTION: In this spinning frame 1, a yarn-discharging nozzle 36 for jetting pressurized air into the yarn passage 29 of a guide shaft portion 52 is disposed, and a control means for switching on the yarn-discharging nozzle 36 for a prescribed time on the stoppage of the spinning is disposed. The control means preferably controls to open or close the guide shaft portion 52 from or to a spinning nozzle portion 19, and preferably further switches on the yarn- discharging nozzle 36 for a prescribed time, when the guide shaft portion 52 is opened. The control means preferably switches on the yarn-discharging nozzle 36 for a prescribed time, then switches on the spinning nozzle 27 of the spinning nozzle portion 19, and simultaneously closes the guide shaft portion 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning apparatus, and more particularly to a spinning apparatus having a cleaning means for removing a clogged fiber when a nozzle is clogged or a guide shaft is clogged.

[0002]

2. Description of the Related Art Generally, in a spinning apparatus, when a large slab comes during spinning, the slab is sensed by a yarn clearer.
The slab is cut off and waits for the knotting service. When a larger slab comes, the slab is caught at the inlet of the spinning nozzle or at the tip of the spindle, causing so-called nozzle clogging or clogging at the guide shaft. Even in the case of a notching error, a small guide shaft body may remain clogged.
Further, the fiber may be wound around the tip of the spindle.

[0003] If the nozzle is clogged or the guide shaft is clogged, a defective yarn is formed or the yarn breaks, thereby making spinning impossible. Also, complete removal of the fiber is necessary to ensure the success of the next splicing. Therefore, cleaning for removing the clogged fiber is required.

[0004]

This cleaning has conventionally been performed manually. However, this has caused a situation in which the operator needs to perform a recovery process, and has reduced the operating efficiency of the machine.

[0005]

A spinning apparatus according to the present invention comprises a draft section, a spinning nozzle section downstream of the draft section, and a guide shaft section downstream of the spinning nozzle section. A cleaning nozzle for injecting compressed air into the yarn passage of the shaft portion is provided, and control means for injecting compressed air from the cleaning nozzle for a predetermined time when spinning is stopped is provided.

The guide shaft is openable and closable with respect to the spinning nozzle. The control means opens the guide shaft with respect to the spinning nozzle when spinning is stopped. It is preferable to inject the compressed air from the cleaning nozzle for a predetermined time.

Further, the control means closes the guide shaft portion which is open with respect to the spinning nozzle while injecting compressed air from the spinning nozzle of the spinning nozzle when the spinning is stopped. preferable.

[0008]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIG. 6, a spinning apparatus 1 includes a large number of spinning units 2 provided side by side, and a splicing device (spun bogie) 3 provided between the spinning units 2 so as to be able to run freely.
, A blower box 4 and a motor box 5.

As shown in FIGS. 7 and 8, each spinning unit 2 is provided on a casing 6 of the main body of the spinning device 1, and is provided near a top end of the casing 6 to extend a sliver. A spinning section 9 provided downstream of the draft section 7 for spinning the fiber bundle 8 sent from the draft section 7; a yarn feed section 11 provided downstream of the spinning section 9 for feeding a spun yarn 10; A suction unit 50 provided on the downstream side of the yarn feeding unit 11 and formed of a slack tube for sucking the spun yarn 10; and a spun yarn 10 provided on the downstream side of the suction unit 50.
A yarn defect detecting unit 51 formed of a yarn clearer for detecting the yarn defect described above, and a winding unit 12 provided downstream of the yarn defect detecting unit 51 for winding the spun yarn 10.

As shown in FIG. 8, the draft portion 7 is for drawing the sliver 13 into a fiber bundle 8.
Back roller 14, Third roller 15, Middle roller 17 on which apron belt 16 is mounted, and Front roller 1
8 rollers.

As shown in FIG. 3, the spinning section 9 has a spinning nozzle section 19 for applying a swirling flow to the fiber bundle 8 while penetrating the fiber bundle 8 sent from the front roller 18, and discharging the spinning nozzle section 19 from the spinning nozzle section 19. And a guide shaft portion 52 provided opposite to the spinning nozzle portion 19 to apply a real twist to the fiber bundle 8. The guide shaft 52 has a hollow guide shaft 20 at the center thereof. By the action of the swirling flow by the spinning nozzle portion 19 and the guide shaft portion 52, the fiber bundle sent from the draft portion 7 becomes a real twisted spun yarn 10.

The spinning nozzle portion 19 has a guide hole 21 for introducing the drafted fiber bundle 8, a needle holder 23 for holding a needle 22 on the flow path of the fiber bundle 8 discharged from the guide hole 21, A swirling flow generating unit 25 that is in close contact with the downstream side of the holder 23 and covers a distal end portion 24 of a hollow guide shaft body 20 described later with a predetermined interval, and generates a swirling flow near the distal end of the hollow guide shaft body 20. Consists of

The swirling flow generating section 25 is formed in a tapered cylindrical shape, and is assembled concentrically with the needle holder 23. The needle holder 2 is provided inside the swirling flow generating section 25.
A spinning chamber 26 for applying a swirling flow to the fiber bundles 8 sent from 3 is formed, and the tip end portion 24 of the hollow guide shaft 20 is accommodated in the spinning chamber 26 coaxially. I have.

The swirling flow generator 25 includes a spinning chamber 26.
First swirl nozzle hole 27 for generating swirl flow inside
(The spinning nozzle of the present invention) is formed in plurality.
The first swirl nozzle hole 27 is a thin hole connected to the inside of the spinning chamber 26 from the radial outside of the swirl flow generating unit 25, and looks at air in the yarn running direction along the inner circumference of the swirl flow generator 25. It is formed on the tangent to the spinning chamber 26 so as to flow in the counterclockwise (counterclockwise, see FIG. 4) direction 48 and at an angle to the downstream side in the feed direction of the fiber bundle 8.

The hollow guide shaft 20 has a distal end 24 formed in a tapered cylindrical shape with a tapered end, and an opening 28 formed at the distal end is arranged toward the needle 22.

Further, a spun yarn passage 29 (constituting the yarn passage of the present invention) formed on the axis of the hollow guide shaft body 20 is formed so as to diverge toward the yarn discharge side. Specifically, the spun yarn passage 29 is formed by increasing the diameter in multiple stages, and has a small diameter introduction portion 30 extending a predetermined length from the opening 28 toward the discharge side, and a stepped portion downstream of the introduction portion 30. A first enlarged-diameter portion 31 which is enlarged in diameter, a second enlarged-diameter portion 32 which is smoothly connected to the downstream side of the first enlarged-diameter portion 31 and is enlarged in a tapered shape,
A third enlarged diameter portion 33 is formed on the downstream side of the second enlarged diameter portion 32 in a stepwise manner. A discharge port 34 is formed at the discharge side end of the third enlarged diameter portion 33.

The hollow guide shaft 20 is provided around the outer periphery of the spun yarn passage 29 with the fiber bundle 8 swiveled by the spinning nozzle 19.
And a suction force generating means 35 for sucking and introducing into the spun yarn passage 29.

As shown in FIGS. 4 and 5, the suction force generating means 35 includes a plurality of second swirl nozzle holes 36 (in the middle of the hollow guide shaft 20 tangentially to the spun yarn passage 29). Constituting the cleaning nozzle of the present invention). The second swirl nozzle holes 36 are respectively provided in the spun yarn passages 29.
8 places at equal intervals so that air flows in a clockwise direction (clockwise, see FIG. 4) direction 49 when viewed in the yarn running direction along the inner circumference of
It is formed so as to be connected to the first enlarged diameter portion 31.

Further, inside the hollow guide shaft body 20, each second swirl nozzle hole 36 extends from the vicinity of the discharge port 34 to the tip side.
An air passage 37 communicating with the air passage is formed. The air passage 37 is connected to the compressed air supply passage 38 on the discharge port 34 side.

As shown in FIG. 7 and FIG.
Is composed of a delivery roller 39 provided on the casing 6 of the spinning device 1 and a nip roller 40 provided so as to be freely accessible to the delivery roller 39. And the spinning unit 9
By rotating the delivery roller 39 while sandwiching the spun yarn 10 discharged from the nip roller 40 between the delivery roller 39 and the nip roller 40, the spun yarn 10 is sent to the winding unit 12 side.

The piecing apparatus 3 includes a carriage 42 running on a rail 41 provided on the casing 6 of the spinning apparatus 1.
And a knotter (jet splicer) 43 provided on the carriage 42, and a spinning unit 9
A suction pipe 44 that guides the yarn end discharged from the suction pipe to the knotter 43 while sucking the yarn end from a package 45 that is provided on the carriage 42 so as to be capable of raising and lowering and is rotatably supported by the winding unit 12 and guided to the knotter 43. And a suction mouse 46 to be operated.

The spinning apparatus 1 incorporates a controller (not shown) (which constitutes the control means of the present invention), which generally controls the operation of each unit described later.

Next, the operation will be described.

A yarn splicing for starting the spinning device 1 and
When piecing by yarn breakage, the piecing device 3 is moved to the spinning unit 2 where piecing is to be performed.

At the time of piecing, the sliver 13 is drawn in the drafting section 7 and sent out to the spinning section 9 as a fiber bundle 8. The fiber bundle 8 sent to the spinning unit 9 is inserted through the guide hole 21 of the needle holder 23.

At this time, in the spinning section 9, compressed air (compressed air) is injected from both the first swirl nozzle hole 27 and the second swirl nozzle hole 36.

The first swirl nozzle hole 27 is formed to be inclined downstream of the fiber bundle 8 in the feed direction, and the compressed air injected from the first swirl nozzle hole 27 swirls in the feed direction of the fiber bundle 8. The guide hole 2 of the needle holder 23
The fiber bundle 8 passed through the inside 1 is sent to the vicinity of the opening 28 of the hollow guide shaft body 20 while being in a loosely twisted state by a swirling flow.

The compressed air injected from the second swirl nozzle hole 36 flows along the inner peripheral surface in the spun yarn passage 29 formed in the hollow guide shaft body 20 to form a swirl flow.

The spun yarn passage 29 is formed so as to expand toward the discharge side of the spun yarn 10, so that the second
The compressed air injected into the spun yarn passage 29 through the swirl nozzle hole 36 flows toward the discharge side of the spun yarn 10, and the small-diameter introduction portion 30 has a negative pressure. For this reason, air flows in the suction direction (the direction toward the inside of the hollow guide shaft body 20) in the opening 28 formed at the tip of the hollow guide shaft body 20. Thereby, the fiber bundle 8 can be continuously drawn in.

The fiber bundle 8 in the false twist state sent to the vicinity of the opening 28 of the hollow guide shaft 20 is sucked into the spun yarn passage 29 in the opening 28 by the suction flow from the opening 28.

Then, the fiber bundle 8 reaches the first enlarged diameter portion 31 and is exposed to a swirling flow in the opposite direction to the spinning nozzle portion 19. For this reason, the fiber bundle 8 in a loose false twist state is spun into a bundled fiber shape by a known spinning technique of manufacturing a spun yarn by using swirling nozzles in mutually opposite directions, while the hollow guide shaft body 2 is being spun.
Emitted from 0.

As described above, the second swirl nozzle hole 36 serving as a cleaning nozzle is also used as a yarn feeding nozzle at the time of splicing.

When the yarn end is discharged from the hollow guide shaft 20, the yarn is spliced with the yarn end on the winding side by the yarn splicing device 3 which has arrived in advance. In this piecing operation,
The bound spun yarn 47 discharged from the hollow guide shaft body 20 is guided to the notter 43 while being sucked by the suction pipe 44.

While the bound spun yarn 47 is being guided by the suction pipe 44, the bound spun yarn 47 is sandwiched between the continuously rotating delivery roller 39 and the nip roller 40, and is stably sent out. Thereafter, the suction force generating means 35 is stopped. As a result, the swirling flow in the hollow guide shaft body 20 disappears and the spinning of the bound fiber is completed, and the normal spinning state, that is, the swirling flow from the first swirl nozzle hole 27 and the hollow guide shaft body 20
The actual twisting spinning is started by the action with the tip portion 24 of. Thus, the suction force generating means 35 is always off during spinning.

When the yarn on the supply side is passed from the suction pipe 44 to the knotter 43, all of the united spun yarn 47 is sucked into the suction pipe 44, and the real twisted spun yarn is passed to the knotter 43.

At this time, the suction mouth 46 is driven in parallel with the suction pipe 44, and the yarn end on the package 45 side is also passed to the knotter 43.

When the spun yarn on the suction pipe 44 side and the spun yarn side on the suction mouth 46 side are respectively passed to the knotter 43, the knotter 43 is driven to tie and splice both real twisted spun yarns.

As described above, in order to suck the fiber bundle 8 swirled by the spinning nozzle portion 19 and introduce it into the spun yarn passage 29, the suction force generating means 35 acting only at the time of splicing or at the start of spinning is provided. It was provided inside the hollow guide shaft 20. For this reason, the fiber bundle on the supply side can be easily drawn into the hollow guide shaft body 20 at the time of splicing or the start of spinning, and can be sent to the downstream side of the spinning unit 9. This eliminates the complicated preparatory work of temporarily back-flowing the yarn on the package 45 side to the upstream side of the spinning unit 9 as in the conventional device, and can simplify the piecing device 3. , The piecing can be performed reliably and easily.

Further, since the suction force generating means 35 comprises a plurality of second swirling nozzle holes 36 provided in the hollow guide shaft 20 in a direction tangential to the spun yarn passage 29, a simple structure is provided. The manufacturing cost can be suppressed and high reliability can be obtained.

Since a swirling flow is generated in the hollow guide shaft 20 in a direction opposite to the direction of the spinning nozzle 19, spinning can be performed in the spinning nozzle 19, and the fiber bundle 8 can be formed into a thread. .

The spun yarn passage 29 is formed so as to expand toward the discharge side of the spun yarn so that the second swirl nozzle hole 3 is formed.
6 can be sent to the discharge port 34 side, the opening 28 side can be set to a negative pressure, and the opening 28
A suction flow can be formed.

Then, inside the hollow guide shaft body 20, each second swirl nozzle hole 3 extends from the vicinity of the discharge port 34 to the distal end side.
6, an air passage 37 communicating with the air passage 37 is formed.
However, the compressed air can be easily supplied to the second swirl nozzle hole 36 with a simple structure because the compressed air supply path 38 is connected to the outlet 34 side.

Further, in order to generate a swirling flow in the hollow guide shaft body 20 to make the fiber bundle 8 into a thread form, the thread is caught between the delivery roller 39 and the nip roller 40 while the thread is guided by the suction pipe 44. Later, the suction force generating means 3
By stopping 5, spinning of the bunched fiber can be changed to spinning.

After the conversion to the real twist spinning, the actual twist spun yarn and the real twist spun yarn on the package 45 side are spliced, so that only the real twist spun yarn can be wound around the package 45.

The second swirl nozzle hole 36 may be formed so as to be inclined in the yarn feed direction. Also, the suction force generating means 3
The control 5 is started at the start of the spinning, and is controlled so as to stop in the middle of the piecing operation (after the yarn is sandwiched between the delivery roller 39 and the nip roller 40).

The piecing is performed in this way in this apparatus. When the spinning is stopped before the piecing (when the back roller is stopped), the following automatic cleaning is always performed. Therefore, when the yarn is stopped due to a clogged nozzle or clogged guide shaft, spinning is performed to remove the clogged fiber.Before starting the device, cleaning is performed to clean around the nozzle and spindle. Will be executed.

First, as shown in FIG.
In this case, the guide shaft portion 52 can be opened and closed while approaching / separating from the spinning nozzle portion 19. The opening / closing operation is performed by an actuator (not shown), and the opening / closing control is performed by the above-described control device as in the other portions. In conjunction with this opening / closing operation, the spinning nozzle portion 19 also comes close to and separates from the draft portion 7 by a small stroke.

Here, a case where the fiber F is clogged at the spinning nozzle portion 19 and the entrance of the guide shaft portion 52 to cause a choke and break the yarn is taken as an example. At this time, as shown in FIG. 1A, a large slab is caught at the entrance of the guide hole 21 in the spinning nozzle portion 19, and the fiber is clogged inside the guide hole 21. In the guide shaft portion 52, a large fiber is also caught at the entrance (opening 28) of the spun yarn passage 29 of the hollow guide shaft 20, and the fiber is clogged therein. These fibers are all continuous.

The nozzle shower not shown to the inlet side of the spinning nozzle part 19 is provided to inject compressed air A ₃ like a shower to the inlet portion as shown in FIG. 1 (b), so as Fukitobaseru Fiber I have.

[0051] As shown in FIG. 2, in time T _2, before spinning the back roller 14 is stopped by detecting a yarn breakage, the back roller 14 (B / R) is driven (ON), the first turning The nozzle hole 27 injects compressed air (ON), the second swirl nozzle hole 36 and the nozzle shower stop injecting compressed air (OFF), and the guide shaft 52 is closed.

When a yarn breakage occurs due to nozzle clogging or clogging of the guide shaft body, and at time T ₁ the yarn defect detecting section 51 detects a yarn breakage, the back roller 14 (at time T ₂ ). B / R) is stopped, and the spinning (supply of the fiber bundle to the spinning unit) is stopped. After this stop, a predetermined time ΔT
Maintain the status quo for _one .

As a result, as shown in FIG. 1A, the fiber downstream from the back roller 14 is
The 7 pressure A ₁ of the true twist spinning usual yarn 1
It is discharged from the guide shaft portion 52 as 0, is sent between the delivery roller 39 and the nip roller 40, is sent downstream, and is taken up by the package 45. As described above, even after the back roller 14 is stopped, the first revolving nozzle hole 27 is turned on while the guide shaft portion 52 is closed for the predetermined time ΔT ₁ , so that the first revolving nozzle hole 27 remains in the draft portion 7 when the back roller 14 stops. All the fibers can be discharged from the guide shaft portion 52 in the form of a thread.

Next, as shown in FIG. 2, at time T ₃ after [Delta] T ₁ elapses, and the same time the second turning nozzle hole 36 and the nozzle showers when the guide shaft body 52 is opened is ON. At the same time, the spinning nozzle portion 19 is also slightly moved toward the front roller 18 side (see FIG. 1B). The first swirl nozzle hole 27 remains ON.

As shown in FIG. 1 (b), the guide shaft 52
By opening the fiber, the fiber continuous from the guide hole 21 to the spun yarn passage 29 is cut off in the middle. The compressed air A ₃ from the nozzle shower blows off the fiber accumulated near the entrance of the guide hole 21, and the guide hole 21 continuous with the fiber
Pull out and blow out the fiber clogged inside. The removal of the fiber is easily and reliably performed by moving the spinning nozzle portion 19. Compressed air A from the first swirl nozzle hole 27
_1, at the same time blowing away accumulated by causing a swirling flow S ₁ into the guide hole 21 near the exit fibers, blow also pull the fibers jammed in the guide hole 21 continuous thereto.

On the other hand, the compressed air A from the second swirl nozzle hole 36
₂ is the first enlarged diameter portion 31 of the spun yarn passage 29 as described above.
Causing subsequent negative pressure of the swirling flow S ₂ and the introduction section 30.
As a result, a part of the fiber clogged at the entrance of the spun yarn passage 29 is cut off from the exit side and discharged and removed from the discharge port 34.

The blown fibers and the fibers discharged from the discharge port 34 are sucked and removed by a dust collector (not shown).

As shown in FIG. 2, when ΔT _{2 has} elapsed from time T ₃ , the second swirling nozzle hole 36 is turned off, and the nozzle shower is turned off slightly later than this. The first swirl nozzle hole 27 remains ON.

As shown in FIG. 1B, the fiber F may still be clogged at the entrance of the spun yarn passage 29 at this time. The fiber F projects outside a predetermined length with the clogged portion as a base end, and hangs down at the tip of the hollow guide shaft 20. Naturally, the fiber tip is free.

Therefore, the guide shaft 52 can be removed by closing it. That is, as shown in FIG. 2, a time T after a predetermined time has elapsed since the nozzle shower was turned off.
_{In step 4} , the guide shaft portion 5 is kept with the first swirl nozzle hole 27 ON.
2 is closed. Then, as shown in FIG. 1 (c), in the process of closing the guide shaft portion 52, the fiber is swung around the spindle axis by the swirling flow S ₁ of the first swirling nozzle hole 27, and from the entrance of the spun yarn passage 29. It is pulled out and removed. This removes all clogged fibers,
Cleaning ends. Thereafter, if the piecing operation is performed by the above-described method, spinning can be performed.

The cleaning is performed not only when a yarn break is detected, but also when a slab is detected by the yarn defect detection unit 51. In this case, the yarn provided by the yarn defect detection unit 51 is used to immediately remove the yarn. The cutting is performed and the cleaning is performed. Cleaning is also performed before the apparatus is started.
That is, cleaning is always performed once when spinning is stopped.

As described above, according to the present apparatus, the cleaning operation at the time of stopping the spinning is executed by the control device based on the yarn breakage signal, so that the automatic cleaning becomes possible and the occurrence of the end-down is prevented. The operating efficiency of the machine stand can be improved. In addition, since the second swirl nozzle hole 36 serving as a thread take-out nozzle is used for automatic cleaning, automatic cleaning can be achieved without changing the structure, which is advantageous in cost.

In particular, when the spinning is stopped, the second swirl nozzle hole 36
Is turned ON for a predetermined time, the fiber remaining in the spun yarn passage 29 can be discharged and removed from the discharge port 34. Further, by opening the guide shaft portion 52, the fibers connected to the guide shaft portion 52 and the spinning nozzle portion 19 can be cut off midway and cut off. Since the second swirl nozzle hole 36 is turned on in this state, the removal of the fiber from the outlet 34 becomes easy. Further, after the removal of the fiber, the guide shaft body 52 shifts from the open state to the closed state while the first swirl nozzle hole 27 is turned on. And the fiber which remains at the tip of the guide shaft portion 52 and whose tip is free can be swung and removed.

[0064] As shown in FIG. 2, the first process I of the cleaning process from time T _2, to T _3, the second stage II to T ₄ from the time T _3, the third stage of the time T ₄ after III
They are roughly divided into In the above example, the second and third steps are 1
These steps are performed one by one, but these steps may be repeated, such as returning to the second step after the third step. In this case, cleaning becomes more complete, and the probability of splicing errors can be greatly reduced.

As described above, various other embodiments of the present invention can be considered.

[0066]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) Automatic cleaning becomes possible, and it is possible to prevent the occurrence of a state requiring operator recovery processing, thereby improving the operating efficiency of the machine.

[Brief description of the drawings]

FIG. 1 is a process chart showing a cleaning method according to an embodiment.

FIG. 2 is a time chart showing an operation state of each unit at the time of cleaning.

FIG. 3 is a sectional view showing a main part of the spinning device.

FIG. 4 is an enlarged view of a main part of FIG. 3;

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a front view of the spinning device.

FIG. 7 is a vertical sectional side view of the spinning device.

FIG. 8 is a perspective view showing a configuration of a spinning unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spinning apparatus 19 Spinning nozzle part 27 1st swirl nozzle hole 29 Spun yarn path 36 2nd swirl nozzle hole 52 Guide shaft body part

Claims (3)

[Claims] 1. A cleaning device comprising: a draft portion; a spinning nozzle portion downstream of the draft portion; and a guide shaft portion downstream of the spinning nozzle portion, wherein cleaning is performed by injecting compressed air into a yarn passage of the guide shaft portion. A spinning nozzle, and control means for injecting compressed air from the cleaning nozzle for a predetermined time when spinning is stopped. 2. The guide shaft portion is openable and closable with respect to the spinning nozzle portion, and the control means opens the guide shaft portion with respect to the spinning nozzle portion when spinning is stopped. 2. The spinning apparatus according to claim 1, wherein compressed air is ejected from the cleaning nozzle for a predetermined time. 3. The method according to claim 2, wherein the control unit is configured to stop the spinning operation.
While injecting compressed air from the spinning nozzle of the spinning nozzle section,
3. The spinning device according to claim 2, wherein the guide shaft portion that is open with respect to the spinning nozzle portion is closed.