JP2848256B2 - Winding machine provided with yarn end processing method and yarn end processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn end treatment of a wound body such as a package and a winding bobbin used in a textile machine. In particular, the present invention relates to a yarn end treatment for preventing an adverse effect caused by natural unwinding of a yarn end at the end of winding by fixing the yarn end to a wound body. Furthermore,
The present invention relates to a yarn end processing method suitable for adopting a yarn end processing method according to another invention of the present inventor in an automatic machine, and a winding machine provided with the yarn end processing device.

[0002]

2. Description of the Related Art For example, in a chemical fiber spinning winder, a continuously spun yarn is wound up, and a full package is conveyed to the next process or shipped as a product. . In the package, in order to prevent the yarn of the outermost layer from being unraveled during transportation, the yarn end at the end of winding is wound around the outermost layer of the package to tie the yarn. Otherwise, the unconstrained yarn ends will get stuck in the external air flow and become unnecessarily unwound, for example, entangled with the adjacent rotating shaft, or entangled with other machine parts during transport, for example, causing trouble. is there.

[0003] In spun yarns made of short fibers, the yarn ends are rarely spontaneously unwound without aggressive yarn end treatment, such as filament yarns, due to the entanglement of fluff between the yarns. . However, fluff entanglement caused by merely pressing the yarn end against the surface of the wound body is weak and lacks certainty, so that the above-mentioned accidents frequently occur during rolling of the package or during transportation of the package.

There have been proposed several alternative methods of winding the yarn end around the outermost layer of the wound body to tie the yarn because of the complicated operation and mechanism and low processing efficiency.

[0005] The first conventional method is a processing method in which a yarn end is fixed to a predetermined position by an adhesive or an adhesive tape.
In a second conventional method, the surface of the package at the portion where the yarn end is present is covered with a fluid nozzle having a groove along the winding direction, and compressed air is blown onto the package surface including the yarn end to form the yarn. This is a processing method in which the ends are entangled with the surface yarn.

[0006]

A first method for fixing the yarn end with an adhesive or an adhesive tape is to apply an extra substance such as an adhesive or an adhesive tape to the yarn end for fixing the yarn end. Required, and there is a problem in terms of maintenance. Damage to the wound body surface layer is also large. The second method of blowing the compressed air to entangle the yarn end with the surface yarn is a simpler mechanism than the method of knotting or the first method, but directly presses the fluid nozzle against the package surface. In fact, since strong compressed air is blown from the nozzle onto the package surface, it is difficult to avoid disturbance of the package shape and the surface yarn layer, making it difficult to find the yarn end pushed into the surface layer of the wound body. Inferior in unwinding property.

The present inventor has proposed the following method which is different from the present invention as a yarn end processing method which has solved the disadvantages of the prior art. This is a method in which twist is applied to the yarn end of the surface layer of the wound body, the filament or fuzz in the surface layer portion is entangled by rotation of the entire yarn end due to the twist, and the yarn end is wound around the filament or fuzz and fixed. Further, in order to carry out this method, the present invention is a yarn end processing device comprising a twisting nozzle for applying twist to the yarn end of the wound body by swirling flow.

According to the present invention, the yarn end of the wound body can be securely fixed by a simple mechanism without needing an extra substance and without a fluid nozzle or compressed air coming into direct contact with the package. Moreover, it is an object of the present invention to provide a yarn end processing method which can easily take out the yarn end when the wound yarn body is used, and which is suitable for adopting the yarn end processing method in an automatic machine.

[0009]

According to the first aspect of the present invention, there is provided a yarn end processing method for winding a winding body so that a yarn end can be suctioned and captured.
The yarn end that has been unwound by rotating in the direction opposite to the
Is twisted and is in contact with the surface layer of the wound body at the end of the yarn.
The surface yarn part of the wound body is rotated by rotation of the entire part by the twist.
Wrap the yarn end around the surface yarn and stop
After reversing the thread end,
The amount of the yarn that has been suctioned and captured by continuing the fixed amount is
Is to be wrapped around.

In the yarn end processing method according to the second aspect of the present invention, in the above yarn end processing method, before performing the yarn end processing, the surface layer of the wound body is wound with a rod , and the yarn end is wound with the rod winding portion. Solid
One in which a constant. In the yarn winding machine according to the third invention, the two spindles are rotatably projected and supported.
When the spindle is in the winding position, the other spindle
Are arranged to be in the standby position and are supplied continuously.
The yarn is wound alternately on bobbins mounted on the two spindles
In the winding machine, a nozzle that sucks the yarn end and this nozzle
Open the yarn inlet in the air flow path of the suction nozzle, and turn
Yarn provided with a twisting nozzle that imparts strong twist to the yarn by airflow
An end processing device is disposed on the standby position side of the spindle.
And the spin between the winding position and the standby position.
The suction nozzle interferes with the full package when changing dollars
So that the opening of the suction nozzle is on the package side
Switch between working position and standby position in opposite direction
It is freely supported .

[0011]

The first aspect of the present invention is to rotate the wound body in a direction opposite to the winding direction, unwind the wound body so that the yarn end can be captured, and apply twist to the captured yarn end. It acts so that the surface layer portion of the wound body is entangled at the yarn end. By the reversal of the wound body, which is continued even after the completion of the fastening of the yarn end, the yarn end which has been sucked and unwound is again wound around the peripheral surface of the wound body.

According to the second aspect of the present invention, the yarn end acts so as to be entangled with the bar-wound portion serving as a waste yarn, which is applied before the above-mentioned yarn end treatment is performed. Further, the winding machine according to the third aspect of the present invention can perform the yarn end processing subsequent to the completion of the yarn winding.

[0013]

1 and 2 schematically show a yarn end processing method and a yarn end processing apparatus used in the method according to the present invention for easy understanding.

FIG. 1 shows a package P, which is a wound body wound by a filament winder, and a yarn end processing device 1 for processing the yarn end YE. Yarn end treatment device 1
Is a suction nozzle 1A that captures the yarn end by suction using compressed air, and a twist opening that opens a yarn introduction port 1b in the middle of the air flow path of the suction nozzle 1A and imparts a strong twist to the yarn by a swirling air flow. And a hanging nozzle 1B. Each nozzle is connected to a compressor 2 via a variable throttle C and a solenoid valve V.
The suction force and the twisting force can be adjusted by adjusting the throttle amount of the variable throttle C.
At the end of the winding by the winder, the package P is provided with a bar winding SW for winding a predetermined length of the yarn without traversing, on one end side of the outer periphery of the package P. Fasten to the winding SW part. For this purpose, the suction nozzle 1A is disposed close to the surface of the package P at a position corresponding to the bar-wound SW portion. Reference numerals 1c and 1d in FIG. 1 denote an exhaust port of the suction nozzle 1A and an exhaust port of the twisting nozzle 1B.

As the twisting nozzle 1B, a known nozzle can be used. 7 and 8 are sectional views of the twisting nozzle 1B. As shown in the drawing, the twisting nozzle 1B
Has a plurality of air injection pipes 31 opened substantially in a tangential direction to the nozzle main body 32, and the cross-sectional shape of the nozzle main body 32 has a conical shape diverging toward the exhaust port 1d.
A balloon control ring 33 having a diameter smaller than the inner diameter of the nozzle body 32 is provided on the yarn introduction port 1 b side of the nozzle body 32.
Is provided. In such a configuration, when the compressed air is supplied from the injection pipe 31 into the nozzle main body 32, a swirling spiral flow is generated in the nozzle main body 32 toward the exhaust port 1d side, and the yarn end is swirled by the air flow. , So that the yarn end is actively pulled out.

Referring to FIG. 2, a specific method of yarn end processing and its mechanism will be described. First, as shown in FIG. 2 (a), the solenoid valve V is opened, air is sucked from the tip of the suction nozzle 1A, and compressed air is caused to flow into the twisting nozzle 1B.
Is gently rotated in the clockwise direction opposite to the winding direction. By this reversal, the yarn end YE existing on the surface of the bar winding SW portion of the package P is captured in the suction nozzle 1A.

If the unwinding by the reverse rotation is continued, FIG.
As described above, the tip Ye of the captured yarn end YE reaches the center of the twisting nozzle 1B from the yarn inlet 1b by the suction force of the twisting nozzle 1B, and is given a strong twist by the action of the swirling air flow. Is done. Since a constant tension is applied by the action of the twisting nozzle 1B, the twist given to the yarn end YE propagates upstream. YE with strong twist
Is the yarn end YE in a certain range L in contact with the package P.
The part has a return torque due to strong twisting. As shown in FIG. 2 (c), the entire yarn end YE generates a rolling force on the surface of the package, and entangles the filament f, which is the surface yarn portion of the package P, so that the yarn end YE is fixed to the bar-wound SW portion. Is done. In this embodiment, the rotation direction of the twisting nozzle 1B is set to the right rotation such that the yarn end YE rolls toward the center of the package P. In this case, even if the thread entanglement in the bar-wound SW portion fails, even if the yarn end YE falls off from the bar-wound SW portion, there is an advantage that the yarn end YE does not come off the package P and is entangled with the surface layer of the package P. .

Since the yarn end YE is already fixed to the bar-wound SW portion of the package P, as shown in FIG. 2 (d), the unwinding of the yarn end YE is wrapped around the surface of the package P by continuing the reverse rotation. Turns into. The suction force of the suction nozzle 1A is made weaker than the engagement force when the yarn end YE entangles the filament f. Then, as shown in FIG. 2 (e), the entire yarn end YE captured by the suction nozzle 1A is pulled out and wound around the package P, and the yarn end processing is completed. The number of entangled filaments may be one or several. In addition, when the whole yarn is entangled, there is a case where it is entangled with two yarns.

The following is a microscopic examination of the situation in which the yarn end YE to which the strong twist has been imparted entangles the filament f. The yarn end YE pressed against the surface layer of the package P by the suction force rotates around the yarn axis at a fixed position, and the rotation causes the filament f of the surface layer to be entangled and wound.
In addition, as shown in FIG. 3, the form of the yarn end YE, which is formed into a hard spiral as a whole by twisting and shrinking in the axial direction and the radial direction, promotes the entanglement, and finally the state shown in FIG. Becomes FIG. 4 shows a state in which the yarn end YE is entangled with the filament f on the surface layer of the package P, that is, a state in which the S twist and the Z twist are separated and entangled in front and rear. The existence of the yarn end YE which has entangled the filament f can be confirmed at a glance from its form. Further, as described above, since both ends of the target filament f are fixed, S
When the yarn end YE that is entangled in the mixed state of Z is pulled, both twists cancel each other. Therefore, in the case of the yarn end processing in this mode, the yarn end can be unwound without causing a single yarn break of the filament f.

Since the twisting force of the air flow of the twisting nozzle 1B used in this example is a high-speed rotation of about 300,000 twists / minute, the entanglement operation is actually performed instantaneously. The form after the yarn end treatment differs depending on the suction force of the suction nozzle 1A, the twisting force of the twisting nozzle 1B, and the like. However, as shown in FIG. 5, the state further proceeds from the state of FIG. In many cases, the entire body takes on an entangled form as if it had been twisted. In this case, the yarn end YE is strongly entangled, and when the yarn end YE is pulled for unwinding, a single yarn break may occur. However, it is easier to confirm the processed yarn end YE. There are the following three methods for achieving the state shown in FIG. The first method is a method in which twisting is continuously applied for a certain period of time, the second method is a method in which the package is reversed after entanglement, and the third method is that the yarn end treatment device 1 itself is used instead of the reverse rotation. It is a method of moving to the upstream side of the end.

The suction force of the suction nozzle 1A can catch the yarn end YE of the package P by adjusting the variable throttle C.
Moreover, the yarn end YE can be favorably introduced from the suction nozzle 1A to the twisting nozzle 1B. Further, it is necessary that the tension of the twisted yarn end YE to which the strong twist is imparted is freely allowed in the yarn axis direction.

The above description is for a filament yarn, but the operation is the same for a spun yarn. However, the object to be entangled is not the filament f but the fluff h as the surface layer portion of the wound body. When the yarn end YE of the spun yarn is strongly twisted in the same direction as the yarn twisting direction by the yarn end processing device 1, the rotating yarn end YE entangles the surrounding fluff h by the rotation,
The fastening of the yarn end is completed. FIG. 6 schematically shows an example of a processing state when a spun yarn is subjected to yarn end processing.

In the case of using a wound body having been subjected to the yarn end treatment, the yarn end YE is pulled and unwound. In the case of the filament yarn, as described above, the entanglement of the wound yarn end YE is unwound by pulling the yarn end YE, or the partially entangled filament f is cut off and unwound. In the case of a spun yarn, by pulling, the wound fluff h is cut and can be easily unwound.

Next, a specific example in which the yarn end processing device of the present invention is mounted on a take-up winder 10 as a winding machine will be described with reference to FIGS. 9 to 12.

The take-up winder 10 shown in FIGS. 9 and 10 is of a type called a turret type, which automatically switches between a full bobbin 11 and an empty bobbin 11. A body frame 13 provided on the base frame 12 is provided with a vertically movable box 14, a rotatable turret plate 15, and a fixed frame 17 having an operation box 16 at the end. The elevating box 14 supports a touch roller 14a and a traverse device 14b, respectively. The touch roller 14a is in pressure contact with the yarn layer of the bobbin 11 mounted on the spindle 18 at the winding position. The turret plate 15 is supported so as to be rotatable about a rotation axis by a driving device (not shown). The turret plate 15 rotatably projects and supports two spindles 18, 18, and is arranged so that when one of the spindles 18 is at the winding position, the other spindle 18 is at the standby position. is there. Both spindles 18 are independently driven by a motor M. The empty bobbin 11 in which the yarn end YE of the full package P at the standby position is at the winding position
In order to prevent the revolving separator 19 from being caught in the pivot b, the revolving separator 19 is supported so as to be swingable around the axis 19a. In addition, in order to manually perform the thread hooking before the start of the continuous operation or the like, the thread hooking device 20 is attached to a lever 20b that swings around a shaft 20a.

The bobbin 11 (eight in this example) mounted on the spindle 18 at the take-up position is wound with a thread, and the turret plate 115 is rotated by 180 every time the bobbin 11 is fully wound.
The package P which has been fully wound is transferred to the empty bobbin 11b which has come to the new winding position, and the full package P is pressed by the pusher 21 to be extracted from the spindle 18 and shipped by a transport robot or the like as a product, for example. Transported to the packing area. In this manner, the bobbin 1 in which the continuously supplied yarn is mounted on the two spindles 18
Take up alternately with 1.

In the above configuration, FIG. 11 and FIG.
As shown in the figure, the yarn end processing devices 1 according to the present invention are arranged in a space surrounded by the base frame 12 in a number corresponding to the number of bobbins 11. This yarn end processing device 1
In order to prevent the suction nozzle 1A from interfering with the full package P when the bobbin is replaced by the rotation of the turret plate 15, the suction nozzle 1A is switched between an operation position in which the opening 1a is directed toward the package P and a standby position in which the suction nozzle 1A is directed in the opposite direction. In order to be free, it is supported by a bracket 23 rotatable around an axis 22 parallel to the spindle 18. The motor 1m provided on the fixed frame 17 rotates the bracket 23 for the switching.

The winding of the yarn by the winder 10 proceeds while the yarn end processing device 1 is at the standby position. When the bobbin 11 is fully wound, the turret plate 15 is
The bobbin exchange between full and empty is performed by rotating the bobbin by full rotation, and a rod-wound SW portion that is not traversed is applied to the outer periphery of the full package P over a predetermined length in association with the yarn transfer operation from full to empty bobbin. When the bobbin exchange is completed, the yarn end processing device 1 swings to the operation position in response thereto, and opens the electromagnetic valve V to prepare for suction and twisting. At substantially the same time, the full package P side is gently rotated in the clockwise direction opposite to the winding direction by the drive of the motor M.
The details of the yarn end processing by the reverse rotation are as described in FIG. When the yarn end processing is reversed by two or three rotations, the yarn end processing is considered to be completed, the rotation is stopped, the yarn end processing device 1 is returned to the standby position side, and the full package P after the yarn end processing is completed is taken out from the spindle 18 and carried out. I do.

In the above embodiment, the yarn end processing apparatus 1 including the suction nozzle 1A and the twisting nozzle 1B has been described. However, if the twisting nozzle 1B has a suction amount enough to capture the yarn end YE existing on the surface of the wound body, and if the yarn end YE can be given the tension necessary to propagate the twist to the upstream, the twisting is performed. The yarn end processing device 1 can be configured with only the hanging nozzle 1B. Further, the distance between the position of the tip opening 1a of the suction nozzle 1A and the surface of the package P may be adjusted. A sensor may be provided in the air flow path of the suction nozzle 1A to detect that the end yarn has been caught, and the detection of this sensor may be used as a trigger for opening the solenoid valve V of the twisting nozzle or stopping the reverse rotation. . It is also possible to carry out with only the variable aperture C for setting the twisting force. The twisting force of the air flow of the twisting nozzle 1B is desirably about 300,000 twists / minute as in the above-described embodiment, but the above-described action is achieved even in the range of about 100,000 to 400,000 twists / minute. it can.
In the case of spun yarn, it may be slightly lower. Further, in the above-described embodiment, the example of the cheese-shaped package P has been described as the wound body, but the present invention may be applied to the yarn end treatment of various wound bodies such as a pan-shaped winding bobbin. The means for twisting the yarn end is not limited to the nozzle described in the embodiment, but may be another twisting device such as a belt-type nip twister.

[0030]

According to the first aspect of the present invention, the yarn end is captured, the yarn end is fixed to the surface layer of the wound body, and the captured yarn end is obtained simply by rotating the wound body in a direction opposite to the winding direction. Is automatically performed in order, so that the yarn end processing operation is extremely simple,
An automatic machine employing the yarn end processing method can be easily configured.

If the wound body is wound with a rod before performing the yarn end treatment as in the second aspect of the present invention, the yarn end becomes entangled with the filament of the rod wound portion, and for example, a single yarn break occurs. However, it is only necessary to unwind only the bar-wound portion as the waste thread.

In the case where the yarn end processing device is incorporated in the winding machine as in the third aspect of the invention, the yarn end processing can be performed immediately after the winding is completed, and the obstacle due to the natural unwinding of the yarn end is completely eliminated. Can be eliminated. In addition, since the yarn end processing device is composed of a pneumatic nozzle having no moving parts, the overall configuration is simple.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a yarn end processing device for a package according to the present invention.

FIGS. 2A to 2E are schematic diagrams illustrating a yarn end processing method of the present invention.

FIG. 3 is an enlarged plan view of a main part for explaining the operation of the present invention.

FIG. 4 is an enlarged plan view of a main part showing an aspect after a yarn end process according to the present invention.

FIG. 5 is an enlarged plan view of a main part showing another embodiment after the yarn end processing according to the present invention.

FIG. 6 is an enlarged plan view of a main part showing one mode after the processing when the yarn end processing of the spun yarn is performed by the yarn end processing method according to the present invention.

FIG. 7 is a longitudinal sectional view of a twisting nozzle as a yarn end processing device according to the present invention.

FIG. 8 is a sectional view of a main part of a twisting nozzle as a yarn end processing device according to the present invention.

FIG. 9 is a front view showing the winding machine.

FIG. 10 is a side view showing the winding machine.

FIG. 11 is a front view of a main part of the winder according to the present invention.

FIG. 12 is a plan view of a main part corresponding to FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thread end processing apparatus 1A Suction nozzle 1a Suction nozzle tip opening 1B Twisting nozzle 1b Thread introduction port 1d Exhaust port 2 Pump C Variable throttle f Filament h Fluff L Fixed range M Spindle drive motor P Package V Solenoid valve YE Thread end Ye Thread End tip

Claims (3)

(57) [Claims] 1. A winding body is wound so that a yarn end can be suctioned and captured.
Thread unwound by rotating in the direction opposite to the take-up direction
Twist is applied to the end, and the end is in contact with the surface layer of the wound body at the end of the yarn.
Surface yarn portion of the wound body by rotation of the entire
And wrap the yarn end around the surface yarn to stop.
In addition to fixing the thread end,
A predetermined amount is continued and the end of the yarn captured by suction is wound around the winding body.
A yarn end treatment method to be wound around a surface . 2. The yarn end processing method according to claim 1, wherein
Before performing the yarn end treatment, apply a rod winding to the surface layer of the wound
A yarn end processing method for fixing the yarn end to the bar winding portion . 3. The two spindles are rotatably projected and supported.
When one spindle is in the winding position, the other
Place the spindle so that it is in the standby position and continuously
A bobbin with the supplied yarn mounted on the two spindles
In the winder that winds up alternately, the nozzle that sucks the yarn end and the air flow path of this suction nozzle
Open the yarn introduction port inside, and apply strong twist to the yarn with swirling air flow
A yarn end treatment device having a twisting nozzle
To the standby position side of the
When replacing the spindle between the retraction position and the standby position.
So that the drawing nozzle does not interfere with the full package
Working position with nozzle opening facing package side
That it can be switched to the standby position
Characteristic winder.