JPH0967066A - Yarn winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent yarn, dissociated from a package, from being caught by peripheral parts or the like in doffing operation and pulled out by providing a yarn winding device with a yarn edge treatment means for disjointing the yarn edge so that the cut yarn edge is not dissociated from the package. SOLUTION: When a package is fully wound, yarn Y0 wound traversing is cut by a cutter part 9. Cut yarn Y1 is wound to the package P, and one cut yarn Y1a and led-in yarn Y1b are sucked by a suction pipe 8 so as to be caught. At this time, when the package is fully wound and doffing is required, a cutter plate 9a in the cutter part 9 is rotated clockwise around a fulcrum, and a guide part is protruded onto a yarn path, so that the yarn Y0 traverses while coming in sliding contact with uneven parts 10a, 10b provided at a guide groove 10d of the guide part 7. Yarn fiber is thereby disjointed, and then the yarn is brought into contact with a cutting edge 11 and cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding device for traversing and winding a yarn.

[0002]

2. Description of the Related Art Conventionally, as a winding device for winding a yarn, a bobbin is held in a pair of left and right bobbin holders which are rotatably supported by a cradle arm and is pressed against a friction roller. There is one in which the yarn is rotated and traversed by a traverse guide and wound as a package.

In such a winding device, when the package is fully wound, the yarn being traversed is cut by a cutting blade, and then the fully wound package is discharged onto a belt conveyor behind the winding device, for example. The doffing work of doing was done.

[0004]

However, at the time of doffing, as shown in FIG. 5, the yarn end Ytz of the yarn Y1z of the full-wrapped package cut by the conventional device is in a state in which the bundle of fibers is aligned. It was disconnected. Therefore, the yarn end of the full-wrapped package is not in a state of being attached to the package, but is in a state of hanging down from the peripheral surface of the package. When doffing is performed while hanging down from the peripheral surface of the package, the thread end is caught by the doffing operation peripheral parts during the doffing operation, and the thread is pulled out from the package. In addition, there is a problem that the yarn hanging from the package is entangled with the bobbin during the winding operation to deteriorate the quality of the package during winding, or the yarn breaks.

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional drawbacks described above and to provide a yarn winding device capable of preventing the yarn detached from the package from being caught and pulled out by parts around the doffing operation. Especially.

[0006]

In order to achieve the above object, the invention of claim 1 is a yarn winding device for winding a yarn, wherein the cut yarn end is not separated from the package. A yarn end processing means for separating the yarn is provided. As a result, the yarn ends of the loosely cut yarn are hooked on the yarn of the package so as not to be separated from the package.

According to a second aspect of the present invention, a guide portion for guiding the traversed and wound yarn to the yarn cutting portion is provided, and the yarn end processing means is provided in the guide portion. Thus, in the process of guiding the traversed and wound yarn to the cutting portion in order to cut the yarn when it is fully wound, the yarn end portion having a predetermined length is separated from the cutting portion.

According to a third aspect of the present invention, an uneven portion is formed in the guide portion as a yarn end processing means. As a result, the yarn ends can be separated with a simple configuration in which the guide portion is uneven.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show one embodiment of the yarn winding device according to the present invention. In the figure, the yarn winding device 1 is held from both sides by a pair of left and right bobbin holders 4 (the left side is omitted in the figure) rotatably supported by a cradle arm 3 and rotates while being pressed against a friction roller 5. The yarn Y is wound around the B or the package P while traversing with the traverse guide 6.

The bobbin holder 4 has a cylindrical convex portion 40 that fits into the open end of the bobbin B, and abuts against the end surface of the bobbin B standing upright from its peripheral surface and supporting the bobbin B in the direction of its rotation axis. A collar 41 is provided, and a collar 42 is provided on the opposite side of the collar 41 from the bobbin B, and a bobbin holder 4 is provided between them.
A circumferential groove 43 is formed over the entire circumference of.

Then, as shown in FIG.
A part of the outer circumference is cut out to form two thread hooking portions 41a, 41a at 180 ° intervals. The thread hooking portions 41a, 4
1a is cut out in a wedge shape obliquely toward the rotation direction of the bobbin holder 4, and the deepest portion thereof reaches the convex portion 40 beyond the portion of the collar 41 abutting on the bobbin B.

The collar 42 has the thread hooking portion 41.
A thread hooking portion (not shown) is formed by cutting away from the a and 41a by a predetermined angle behind the bobbin in the rotation direction. The thread hooking portion (not shown) of the collar 42 is provided to be sufficiently shallow within a range in which the thread Y can be hooked.

Further, the fixed blade 31 is positioned in the circumferential groove 43.
Is provided. The fixed blade 31 is fixed to the cradle arm 3. The yarn hooking portion 2 is provided on the yarn introduction side of the yarn winding device 1 outside the traverse range of the yarn Y and at the tip thereof.
A thread hooking arm 20 having two thread locking portions 21 and 22 is rotatably provided. As shown in FIG. 2, the thread hooking arm 20 is fixed to an output shaft of a rotary actuator 24 fixed to a bracket 23, and is rotated about the output shaft of the rotary actuator 24 by the operation of the rotary actuator 24.

In FIG. 1, a reciprocating motion is made within a range of about 180 ° between a standby position 20a shown by a two-dot chain line and a yarn hooking position 20 shown by a solid line in the figure. As the rotary actuator 24, for example, a fluid pressure oscillating motor, a rotary solenoid, or the like can be used, and the reciprocating motion of a translational fluid pressure cylinder can be used as a rack.
It may be converted into rotary motion by a pinion mechanism or the like.

By the rotation of the thread hooking arm 20, the thread locking portions 21 and 22 are rotated, but the two thread locking portions 21 and 22 are rotated.
Of the two, one of the thread locking portions 22 is provided so as to project at a relatively small turning radius position that does not intersect with the collars 41 and 42 of the bobbin holder 4, and the other thread locking portion 21 is the above-mentioned thread locking portion. It is located on the left side in FIG. 1 with respect to the locking portion 22, and is provided so as to project at a relatively large turning radius position that intersects with the collars 41 and 42 on the extension line of the turning locus.

As shown in FIG. 2, the thread locking portions 21 and 22 are provided on the lower end side of the bent portion where the tip of the thread hooking arm 20 is bent downward, and the thread locking portions 21 and The yarn Y locked to 22 is prevented from intersecting with the yarn hooking arm, and both are hook-shaped and arranged so as to face each other. As shown in FIG. 1, the distal end of the thread hooking arm 20 is formed separately and is fixed integrally with the base end side by a bolt 26 through an elongated hole 25, and the diameter of the bobbin B (and the bobbin holder 4). The positions of the thread locking portions 21 and 22 can be adjusted according to the above. Further, 27 and 28 are stoppers.

On the yarn introducing side of the yarn winding device 1, as shown in FIGS. 1 and 2, a cutter portion 9 and a suction pipe 8 are provided. The suction pipe 8 is open to the lower side of the cutter portion 9 in the figure, and the cutter plate 9 at that portion is opened.
A window 12 is opened in a.

Next, the operation of the yarn winding machine 1 at the time of doffing will be described based on an embodiment.

When the package P is fully wound, the yarn Y0 traversed and wound is cut by the cutter portion 9.
The cut yarn Y1 is wound around the package P, and the other cut yarn Y1a and the introduced yarn Y1b are sucked into the suction pipe 8 to be captured. Cutter part 9
The yarn cutting operation in step 1 will be described in detail later. Next, the cradle arm 3 swings to the rear side (left side in FIG. 2) to open, and the fully wound package P is discharged onto the belt conveyor (not shown) behind the yarn winding device 1.

Subsequently, an empty bobbin B is provided by means not shown.
Is supplied from above and is mounted on the bobbin holder 4, and the cradle arm 3 is further swung clockwise in FIG. 2 to press the empty bobbin B against the friction roller 5, and the empty bobbin B and the bobbin holder 4 start rotating. To do.

From this state, the rotary actuator 24 is actuated, the yarn hooking arm 20 is rotated from the standby position shown by 20a in FIG. 1 as shown by the arrow a in FIG. 1, and in the process, the suction nozzle 8 is supplemented. The thread Y1b being held is locked by the thread locking portion 22a at the front in the traveling direction, and further, in the process in which the thread hooking arm 20a rotates as indicated by arrow b in FIG. Y1b is locked by the thread locking portion 21.

At the pivotal end of the thread hooking arm 20, one of the thread locking portions 22 is located outside the collar 42 beyond the collar 42, and the other thread locking portion 21 is positioned on the bobbin side of the collar 41. Then, the yarns locked by these two yarn locking portions 22 and 21 are guided to the bobbin holder 4 side like Y2, Y3 and Y4 shown by solid lines in FIG.

Then, the yarn Y3 obliquely stretched between the two yarn engaging portions 22 and 21 first comes into contact with the collar 41 and is caught by the yarn hooking portion 41, and the bobbin holder 4 rotates. Is pulled to the deepest part of the yarn hooking portion 41a, whereby the yarn Y3 on the yarn feeding side of the yarn hooking portion 41a, that is, the yarn locking portion 21 side is clamped between the collar 41 and the end surface of the bobbin B. To be done.

In parallel with this, the thread Y3 on the thread locking portion 22 side of the thread hooking portion 41a is hooked on the thread hooking portion (not shown) of the outer collar 42, and these thread hooking portions 41a and the collar 42 (not shown). The obliquely stretched yarn Y3 reaches the fixed blade 31 as the bobby holder 4 rotates and is cut by the fixed blade 31, and the cut yarn end Y2 is sucked and removed by the suction pipe 8.

Then, the thread hooking arm 20 is stopped at the thread hooking position for a while, and as shown in FIG.
Bunch winding is performed while guiding the yarn Y4 on the yarn supplying side with 1, and after the predetermined bunch winding is formed, the yarn hooking arm 20
Rotate counterclockwise as shown by arrow b in FIG.
Although the yarn Y5 returns to 0a, the yarn Y5 disengages from the yarn engaging portion 21b when the yarn engaging portion 21b and the yarn Y5 hung on the bobbin B become substantially parallel in the middle 20b. The yarn Y5 descends to the traveling position, and the yarn Y5 is caught by the traverse guide 6 and shifts to the main winding.

Next, details of the cutter portion 9 of the yarn winding device 1 will be described. FIG. 3 is a plan view showing details of the cutter unit 9.

The cutter section 9 comprises a cutter plate 9a and a cutting blade 11 fixed to the cutter plate 9a. At the suction pipe arrangement position of the cutter plate 9a, the window 1
2 is open. Further, the yarn Y0 to be traversed is provided on the portion of the cutter plate 9a on the package P side with the cutting blade 11a.
A guide portion 7 that leads to is formed. As shown in FIG. 2, the cutter plate 9 is swingably supported by the shaft 9d, which allows the cutter plate 9 to move downward from the yarn path of the yarn Y0 traversed in the standby state shown by the solid line in FIG. Although it is positioned, in the operating state shown by the chain double-dashed line in FIG. 2, the guide portion 7 is adapted to penetrate into the yarn path of the yarn Y0 traversed.

The guide section 7 guides the guide line 10c which guides the yarn Y0 traversed in the right direction in the drawing in the operating state and the guide line 10c which guides the yarn Y0 traversed in the left direction in the drawing in the operating state. Blade 1
It has a guide groove 10d for guiding to 1. Guide groove 10
The cutting blade 11 is provided in the inner part of d. The yarns Y0 guided in the guide groove 10d come into contact with the edges 10a and 10b on both sides forming the guide groove 10d.
Concavities and convexities are formed on 0a and 10b to form yarn end processing means.

Next, the detailed operation of the cutter unit 9 will be described. When the package is full and doffing is needed,
The arm 9b shown in FIG.
It is pulled in the c direction. Along with that, the cutter plate 9a rotates to the right in the figure with 9d as a fulcrum. Then, the cutter plate 9a swings upward as shown by the chain double-dashed line in FIG. 2, and the guide portion 7 comes to the position of 7a as shown by the chain double-dashed line in FIG. 2 and enters the traverse of the yarn Y0. To do.

Then, as shown in FIG. 3, the traversed yarn Y0 is guided to the guide portion 7. The yarn Y0 guided to the guide portion 7 is traversed to the position of the cutting edge 11 (the position of Y1) while slidingly contacting the uneven portions 10a and 10b provided in the guide groove 10d of the guide portion 7. Meanwhile, the uneven portion 10
The fibers of the slidable threads of a and 10b are the uneven portions 10a,
It is cut by 10b and processed to be separated.
Then, the processed yarn comes into contact with the cutting blade 11 and is cut into the yarns Y1a and Y1b.

Thread Y0 slidingly contacting the uneven portions 10a, 10b
Is traveling at a predetermined speed, the uneven portions 10a, 1a
It is processed so as to be separated by a predetermined traveling length before it comes into sliding contact with 0b and is cut by the cutting blade 11. The yarn Y1 on the package P side of the cutting blade 11 is wound around the package P, and the yarn Y1b on the supply side of the cutting blade 11 is sucked and captured by the suction pipe 8. Next, the package P in which the yarn Y1a is wound is discharged onto a belt conveyor (not shown) behind the yarn winding device 1 (on the left side in FIG. 2).

When the cutter plate 9a swings upward as shown by the chain double-dashed line in FIG. 2 when the yarn is traversed to the right in the diagram shown in FIG. 3, the cutter shown in FIG. The yarn is traversed in the right direction while slidingly contacting the guide edge 10c of the guide portion 7 of the plate 9a. And FIG.
When the yarn is traversed to the left in the figure, the yarn is guided to the guide groove 10a of the guide portion 7, and as described above, the yarn is processed and cut.

FIG. 4 shows the yarn end Yt of the yarn Y1a processed and cut as described above. The yarn end Yt of the yarn Y1a is in a separated state (fluffy state) by cutting the filament fibers constituting the yarn Y1a over a predetermined length. Since the yarn end Yt is wound around the yarn layer of the package P during doffing, fluffy fibers are entangled in the yarn layer of the package and the yarn end is not disengaged from the package P. Therefore, the yarn end of the package is prevented from being caught on the parts around the doffing operation, and the yarn pulling is prevented.

In the above embodiment, an example in which the thread hooking portion 2 is arranged for each weight is implemented as a single weight automatic doffing device, but a similar device is used for a traveling body moving between the weights. It can also be implemented as a mobile automatic doffing device. Further, in the above embodiment, the case where the yarn hooking device 2 automatically performs the yarn hooking is shown. However, the yarn winding device of the present invention is a case where the yarn hooking device is manually operated by using another yarn hooking device or a suction gun. It is also effective.

[0035]

As described above, according to the first aspect of the invention, the yarn end cut in the loose state is wound around the yarn of the package while being entangled with the yarn, so that the yarn end hangs down from the package and is dissociated. Can be prevented. Then, when the package is discharged onto a belt conveyor for conveying the package and is conveyed, the yarn end of the package is caught by the parts around the doffing operation, and the yarn is pulled out from the package for a long time. Therefore, it is possible to prevent the yarn from being pulled, and it is possible to eliminate the waste yarn that is generated when the yarn is pulled out from the package. Also, the problem that the yarn hanging from the package is entangled with the next winding bobbin (or package) and reduces the quality of the package during winding, or interrupts the winding work can do.

According to the invention of claim 2, the yarn wound on the package can be traversed at the same time as traversing, and the yarn end is spread over a predetermined length. It becomes possible.

According to the third aspect of the present invention, since the yarn end processing can be performed only by the traversing force, it is sufficient to provide the guide portion with unevenness, and it is not necessary to separately provide a yarn end processing device.

[0034]

[Brief description of drawings]

FIG. 1 is a plan view showing an entire yarn winding device according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view showing details of a cutter unit.

FIG. 4 is an enlarged view of a yarn end cut by performing the yarn end processing with the yarn winding device of the present invention.

FIG. 5 is an enlarged view of a yarn end cut by performing a yarn end processing by a conventional yarn winding device.

[Explanation of symbols]

 1 winding device P package Y0 yarn Y1 yarn Y1a yarn Yt yarn end 7 guide portion 10a uneven portion (thread end processing means) 10b uneven portion (thread end processing means) 11 cutting blade (thread cutting portion)

Claims (3)

[Claims] 1. A yarn winding device for winding a yarn, comprising yarn end processing means for separating the cut yarn end from the package so that the yarn end is not separated from the package. . 2. The yarn winding device according to claim 1, further comprising a guide portion for guiding the yarn wound around the yarn to a yarn cutting portion, and provided with a yarn end processing means in the guide portion. apparatus. 3. The yarn winding device according to claim 2, wherein an uneven portion is formed in the guide portion as a yarn end processing means.