JP2580948B2 - How to change traveler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically replacing a traveler inserted into a ring of a ring spinning machine, and more particularly to a method for replacing a traveler which has been loosened before traveling. The present invention relates to a traveler replacement method for preventing and ensuring traveler replacement.

[0002]

2. Description of the Related Art First, a ring spinning machine using a traveler will be described with reference to FIG. The ring spinning machine 101 has a twisting mechanism 102 and a draft mechanism 103. The draft mechanism 103 includes a back roller 104, an apron 10,
5 and a pair of upper and lower rollers of a front roller 107 are sequentially arranged from top to bottom. The upper roller of each roller pair is supported by a cradle arm so as to be openable and closable, and the lower roller of each roller pair is driven. Things.
The large-diameter sliver S or roving yarn S becomes a yarn via the draft mechanism 103. This yarn becomes a spun yarn through a twisting mechanism 102 described below. The twisting mechanism 102 includes a spindle shaft 1 on which the bobbin 2 is inserted, a ring rail 4 which can move up and down along the longitudinal direction of the bobbin 2 and can be traversed, and a ring 5 fixed to the ring rail 4. A traveler 7 which is inserted into the flange 6 of the ring 5 and can travel in the circumferential direction.
, The balloon control ring 9 and the snell wire 8 are arranged from bottom to top. The spindle shaft 1 rotates at a high speed of about 10,000 to 20,000 RPM on a belt 3 common to a plurality of weights. The yarn Y is wound around the bobbin 2 via the snell wire 8, the balloon control ring 9 and the traveler 7. As the bobbin 2 rotates, the traveler 7 is pulled by the yarn and travels on the flange 6 of the ring 5 to twist the yarn. There is a difference in the number of rotations between the bobbin 2 and the traveler 7 by an amount corresponding to the length of the yarn sent from above, and the bobbin 2 winds up this length. That is, the ring 5 and the traveler 7 are a frictional resistor for generating a rotational speed difference, and at the same time, a traveling direction changing mechanism for performing a twisting action and a winding action.

The traveler 7 is inserted into the flange 6 of the ring 5 with a C-shaped fitting. Since the traveler 7 rotates at a high speed of about 10,000 to 20,000 RPM on the flange 6, it wears out. Therefore, it is necessary to exchange the traveler 7 from an old one to a new one every one to two weeks. Conventional traveler replacement methods have been manual. That is,
Remove the old traveler using appropriate nails and insert a new one. When the new traveler is inserted, the traveler mounting device may be used as a manual tool. This conventional method of exchanging the traveler uses tools, but is manual, and if all the travelers of the ring spinning machine having a large number of spindles are exchanged, it takes a considerable amount of time even for a skilled person. Therefore, personnel for this traveler exchange is required.

Therefore, a traveler replacement method for automating the traveler replacement has been desired. Such an automatic traveler exchange method is performed in the order of loosening the yarn reaching the traveler, turning the yarn supplying bobbin to set the traveler at a predetermined position, exchanging the traveler, and removing the slack of the yarn after the exchange. If this operation is sequentially performed on one yarn supplying bobbin, the cycle time becomes longer. Therefore, for the three yarn supplying bobbins, a preparation process for loosening the yarn reaching the traveler, a work process for replacing the traveler, and a finishing process for removing the slack of the yarn after the replacement are simultaneously performed, and the yarn supplying bobbin is moved. We have proposed a traveler replacement method that shifts the preparation process, the work process, and the replacement process sequentially for one yarn feeding bobbin by shifting them one by one to reduce the cycle time.

[0005] In the preparation station of this traveler replacement method, the bobbin 2 in FIG. 10 is reversed to loosen the yarn Y and to be absorbed by the tensor 28. In order to shift to the work station, the slack of the yarn Y absorbed by the tensor 28 is released once. Then, the slack of the yarn Y is absorbed by another tensor 20 of the work station, and the bobbin 2 is rotated forward and the traveler 7 is moved to a predetermined position.

[0006]

By the way, in the above-mentioned automatic traveler replacement method, the slack of the yarn Y absorbed by the tensor 28 is released once when the work station is shifted from the preparation station. Therefore, the yarn Y at this time has no tension, and the twisted yarn Y forms a loop and shrinks. In this case, if the yarn Y falls quickly by its own weight, a loop may be formed near the opening of the traveler 7 as shown in FIG. Then, at the work station, another tensor 20 absorbs the slack of the yarn Y and the yarn Y
When the appropriate tension is applied to move the traveler 7 to a predetermined position, the yarn Y slips out of the traveler 7, and the traveler 7 cannot be moved to a replaceable predetermined position.
There has been a problem that the traveler 7 remains in the ring, resulting in failure of the traveler replacement.

The present invention has been made in view of such a problem, and an object of the present invention is to prevent a yarn from coming out of an opening of a traveler when the yarn reaching the traveler is previously loosened. It is an object of the present invention to provide a traveler replacement method that can eliminate the problem and reduce the traveler replacement failure.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a method for replacing a traveler, comprising the steps of:
In a traveler replacement method in which a work process for performing traveler replacement and a finishing process for removing slack of the yarn after replacement are sequentially performed, the preparation process absorbs the slack of the yarn with an openable / closable tensor and exceeds the absorption limit of the tensor. And releasing the tensor after the yarn is further slackened.

[0009]

[Function] If the yarn is further slackened beyond the limit of absorption of the openable and closable tensor, the yarn will be slackened so as to rise above the traveler. , A loop is formed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a method of replacing a traveler according to the present invention.
8 shows the lapse of time between the operation of No. 8 and the rotation of the yarn supplying bobbin 2.

FIG. 1A shows a state in which the tensor 28 has advanced to a position where the yarn Y reaching the traveler 7 is sandwiched. The tensioner includes a fixed claw 28a and a movable claw 28b, and the thread Y is located between the fixed claw 28a and the movable claw 28b. Then, as shown in FIG. 1 (b), the yarn supplying bobbin 2 rotates in the reverse direction a to loosen the yarn Y. The movable claw 28b is fixed to the fixed claw 28
It is absorbed by meshing with a. When the movable claw 28a performs a full stroke by the distance FS, the thread Y is no longer absorbed by the tensor 28. Next, as shown in FIG. 1C, it is important to add a step of loosening the yarn Y by further reversing the yarn supplying bobbin 2 in the direction b.

In FIG. 1C, since the yarn Y is not absorbed by the tensor 28, the portion of the yarn Y1 from the yarn supplying bobbin 2 to the traveler 7 rises to form a slack loop. Then, it leans on the yarn Y2 reaching the traveler 7, and regulates the yarn Y2. Therefore, as shown in FIG. 1D, even when the tensor 28 is released and the yarn Y2 reaching the traveler 7 is slackened, the yarn Y2 does not hang down, and no loop is formed so as to fall out of the traveler. As a result, in the traveler replacement work at the work station, which will be described in detail below, the yarn supplying bobbin 2 is normally rotated in the c direction, the yarn Y1 is stretched, and the traveler 7 is moved to a predetermined position.

Next, a description will be given below of a device configuration of an operation unit, which is a main part of the traveler switching device applied to the above-described traveler replacement method, and an operation of each device. FIG. 2 is a front view of the operation unit that travels along the ring rail 4. 2, the operation unit 11 includes a first operation unit 11a, a second operation unit 11b, and a third operation unit 11c. FIG. 3 is a top view of the second operation unit 11b of the traveler exchange. Tensors 20 and 28 are provided on the first operation unit 11a in FIG. A positioning plate 16 having a semicircular portion to be fitted into the ring 5, a yarn pulling lever 21, a traveler removing device 22, and a traveler inserting device 23 are provided in the second operation portion 11 b.
And a collection box 15 are provided. Rollers 17 and 1 that can contact the lower part of the bobbin 2 with the third operating portion 11 c
8, 19 are provided.

The operation units 11a, 11b, 11c described above
Forms a first station S1, a second station S2, and a third station S3 in the lateral direction.
In the first station S1, a preparation process for obtaining a necessary slack in the traveler exchange is performed.
In Step 2, a traveler replacement work process is performed, and in a third station S3, a finishing process after stretching the yarn is performed. Then, the operation unit 11 travels by the pitch P, and simultaneously performs the preparation process, the work process, and the finishing process on the three yarn supplying bobbins 2.

The first station S1 includes a positioning plate 1
6, a roller 17 that can freely contact and separate from the bobbin 2, and a tensor 28.
And are provided. The second station S2 includes a positioning plate 16, a roller 18 that can be freely attached to and detached from the bobbin 2, a tensor 20, a yarn pulling lever 21, a traveler removing device 22, a traveler inserting device 23, and a collection box 15. Is provided. In the third station S3,
A roller 19 which can be freely attached to and detached from the bobbin 2;
And are provided. Except for the rollers 17, 18, and 19, the positioning plate 16, the tensers 20 and 28, the yarn pulling lever 21, the traveler removing device 22, the traveler inserting device 23, and the slack removing device 24 are cams mounted on a common cam shaft. It is activated by a row.

Next, a specific traveler replacement method will be described based on the operation at each station. The rollers 17, 18, and 19 in FIG. 2 can contact the side surfaces of the three bobbins 2, and can be separately rotated by a motor. Assuming that the operation unit 11 performs a traveler exchange operation from right to left in the drawing, in the first station, the bobbin 2 is reversed to loosen the yarn Y in order to obtain the necessary slack in the traveler exchange. Then, the loosened yarn Y is stored to the maximum in the tensor 28 provided at the intermediate position from the snell wire 8 to the front roller 107, and the slack of the yarn Y from the snell wire 8 to the bobbin 2 is absorbed. Y
To maintain the tension. Then, the yarn is further loosened. Next, in order to shift to the second station, the slack of the yarn Y absorbed by the tensor 28 is once released.

Then, the slack of the yarn Y is absorbed again by the tensioner 20 of the work station provided at the intermediate position from the snell wire 8 to the front roller 107, and the bobbin 2 is rotated forward and stored in the tensioner 20 this time. An appropriate tension is applied to the yarn Y while winding the yarn. The traveler 7 is moved to a predetermined position (the predetermined position is determined by a traveler removing device serving as a stopper, which is determined by a traveler removing device described below) by the yarn Y to which an appropriate tension is applied, and the traveler 7 is replaced. When shifting to the finishing station, the yarn stored in the tensor 20 is released. Finally, at the finishing station, the bobbin 2 is rotated in the normal direction to remove slack in the yarn, and the yarn is stretched to complete the traveler exchange.

Here, in the traveler exchanging method of the present invention, the slack of the slackened yarn Y is maximally absorbed by the tensor 28 and the slack is further given to the yarn Y by shifting from the first station to the second station. Sometimes, when the twisted yarn Y is released from the tensor 28 and loses tension, a loop is formed above the traveler 7 when a loop is formed and contracted. .

As described above, if the slack of the slack yarn Y is absorbed by the tensor 28 to the maximum and the slack of the yarn Y is included in the preparatory process, the loop becomes a conventional one as shown in FIG. It is less likely to be formed near the opening of the traveler 7 as shown in FIG.
The problem that the traveler 7 cannot be moved to a predetermined replaceable position and cannot be replaced while remaining on the ring is eliminated.

4 and 5 are views showing the structure and operation of the tensor 28 of the first station and the tensor 20 of the second station S2. The left diagram in FIG. 5 is a top view, and the right diagram in FIG. FIG. In FIG. 4, the tensers 20, 28 are:
It is composed of a comb 31 having three claws 47 and a comb 32 having two claws 48, and the whole of the tensers 20 and 28 can advance and retreat with respect to the yarn Y of the ring spinning machine 101. The nails 47 and 48 of the combs 31 and 32 are the boards 31a, 3
A shaft 45 protruding from 2a and to which the comb 32 is fixed,
So that the two claws 48 are located between the claws 47 of the comb 31
It is rotatably inserted into a hole 46 provided in the comb 31. Therefore, each nail 4 of the pair of combs 31 and 32
7 and 48 are freely meshable by rotation of the shaft 45, and the bent portions 47a and 48a of the claws 47 and 48, respectively.
And the yarn Y is stored in the tensor.

In the tensor 20 of the second station, a limit switch 26 for detecting a sufficient degree of the engagement is provided inside the board 32a, and a detection piece 26a is provided inside the board 31a. . The degree of meshing represents the amount of slack of the yarn Y. When a sufficient amount of slack of the yarn Y is obtained, that is, when the amount of meshing becomes sufficient, the limit switch 26 provided inside the board 32a is turned on. The limit switch 26 is turned on when coming into contact with the detecting piece 26a provided inside 31a, and the feeding of the yarn from the yarn supplying bobbin 2 is stopped.

The retracting operation of the tensers 20 and 28 and the rotation of the shaft 45 are performed by the positioning plate 16, the yarn pulling lever 21, the traveler removing device 22, the traveler inserting device 23,
The slack remover 24 is operated by a row of cams mounted on a common camshaft.

Next, the operation of the tensers 20 and 28 will be described with reference to FIG. In (a), the tensers 20 and 28 are retracted to the first operation unit. In (b), when the tensers 20 and 28 advance in the direction from the retracted position, the thread Y is clawed 47 and 48.
Are located between the bent portions 47a and 48a. And nails 48
Move around the shaft 45 in the direction, and mesh with each other in the state (c), the yarn Y zigzags, the slack is absorbed, and the yarn Y is stored.

The tensioner 28 of the first station S1 is for obtaining the slack of the yarn Y necessary for the traveler exchange in advance, but if the slack amount of the yarn Y is insufficient, the second station S2 described below will be described. The operation of the yarn pulling lever of the second station S2 becomes incomplete,
It is necessary to know the slack of the yarn Y, that is, the tension, sufficiently accurately in order for the yarn moving lever to operate reliably. Therefore,
The limit switch 26 and the detection piece 26a shown in FIG. 4 are provided.

The operation of the limit switch 26 is as follows. First, in FIG. 5, the tensor 20 advances in the direction, and the claws 47 and 48 mesh in the direction. Next,
The limit switch 26 detects whether the tensor 20 has sufficient slack. If the slack amount of the yarn Y is insufficient,
Since the engagement of the claws 47 and 48 is insufficient, the limit switch 26 is not turned on. In this case, the yarn is fed from the yarn supplying bobbin by reversing a roller (not shown). When the engagement of the claws 47 and 48 becomes sufficient and the limit switch 26 is turned on, the yarn feeding by reversing the yarn supplying bobbin 2 is stopped. Next, a roller (not shown) is rotated forward to wind the yarn around the yarn supplying bobbin, thereby moving the traveler to a predetermined position. When the traveler stops at a predetermined position, the thread is stretched, and the limit switch 26 is turned off again.
, The tension of the thread is detected, and it is confirmed that there is no obstacle to the next continuous operation. Although the gate tenser using a pair of combs 31 and 32 has been described as an example of the tensers 20 and 28, an air tensor that absorbs slack by sucking and calling air may be used. However, a gate tensor is preferred because an air tensor requires an air source.

As shown in FIG. 1, the above-mentioned tensers 20 and 28 are provided on the first operation portion 11a, are fixed to a bogie (not shown) via guide rods 11d, and have a constant height. Therefore, the tensers 20 and 28 operate at just the intermediate position from the snell wire 8 to the front roller 107. On the other hand, the second operating portion 11b is adapted to follow the stop position of the ring rail 4 so that the bogie 1 (not shown)
2 can be moved up and down freely, and can be set to an arbitrary height.

FIGS. 6A and 6B are views showing the structure and operation of the yarn pulling lever. FIG. 6A is a top view, and FIGS. 6B, 6C and 6D are state diagrams of the yarn. In FIG. 1A, the thread pulling lever 21 is composed of a pair of levers 33 and 34, and hooks 33a and 34a are formed at the ends. Hook part 33
a moves the yarn Y2 downstream of the traveler 7 to the inside of the flange 6, the hook 33b moves the yarn Y1 upstream of the traveler 7 to the outside of the flange 6, and the yarn Y
Is held so as to cross the upper surface of the device diagonally. In this case, the position of the yarn at the point A of the hook 33a, the point C of the hook 33b, and the point B in the middle is at the position shown in FIG. Therefore, when the traveler 7 is inserted into the position of the point B in FIG. By the way, it is preferable that, after the traveler inserting device inserts a new traveler, the yarn removing device should remove the old traveler so that the yarn Y is not carried along with the old traveler. In this case, the two new and old travelers need to be located in the crossing part AC. Then, when the yarn is held so that the starting point A of the cross section AC substantially overlaps the tangent of the inner circumferential circle of the ring 5, the cross section A
-C can be made the longest. The crossing part AC becomes shorter as it deviates from the tangent to the inner circumferential circle. It should be noted that the yarn pulling lever
Before the operation of the device, the traveler removing device 22 described below is used.
Is at a predetermined position, and the arm 35 serves as a stopper to stop the traveler 7 traveling with the forward rotation of the roller 18 at a predetermined position.

FIG. 7 is a diagram showing the structure and operation of the traveler removing device. As shown in FIGS. 6A and 6B, the traveler removing device 22 has a claw 35a as a removing member for the traveler 7 formed at the tip of an arm 35. Rotation is possible. A holding plate 40 as a fixing member is attached to the cylindrical body 39. When the claw 35a of the arm 35 rotates in the direction, the tip 40 of the holding plate 40
a and the pawl 35a so that the traveler 7 can be taken in and held. Further, the entirety of the cylindrical body 39 can be advanced in the direction. Further, the arm 35 also serves as a stopper for the traveler 7, and when the roller 18 in FIG. 2 rotates forward and the yarn is wound, the traveler 7 moves as shown in FIG. 3
5a, and hits the arm 35 and stops. Then, when the arm 35 turns in the direction, as shown in FIG. 3C, the arm 35 is lifted from the flange 6 of the ring so as to take in the traveler 7. Further, when the cylinder 39 moves forward in the direction, as shown in FIG.
Comes off the flange 6 of the ring. When the traveler removing device 22 advances to a predetermined position, if the traveler 7 is located at a position corresponding to the traveler removing device 22, the removal of the traveler fails. Therefore,
As shown in FIG. 2, the traveler 7 is pushed out of the contact position of the traveler removing device 22 by the lever 27 made of an elastic material to remove the traveler.

FIGS. 8A and 8B are views showing the structure and operation of the traveler insertion device, wherein FIG. 8A is an overall perspective view, and FIG. 8B is an enlarged view of a main part. In FIG. 5A, the traveler insertion device 23 includes an arm 36 into which many of the travelers 7 are fitted, a cutout member 37, and a leaf spring 38. By moving the cutting member 37 in the direction, the traveler 7 is sent out to the tip while holding down one of the travelers 7. As shown in FIG. 3B, the distal end 36a of the arm 36 is bent, and the traveler is held in a vertical C-shape. Then, when the entire traveler insertion device 23 retreats in the direction, the traveler 7 is inserted into the flange 6 of the ring.
At the same time, the free traveler 7 is flipped to the far side in the thickness direction of the paper by the leaf spring 38 in FIG.

FIG. 9 is a top view showing the structure and operation of the yarn slack removing device. The slack removing device 24 includes an L-shaped lever 57.
A brush 58 is implanted on one of the arms, and the posture shown in the figure is maintained by a spring 59 and a stopper 60 for the other arm. Further, a limit switch 61 is provided for the other arm of the lever 57. When the bobbin rotates forward with the roller 19 in FIG. 2, the slack yarn is wound. When the yarn is stretched, the traveler 7 travels along the ring 5. The traveler 7 pushes into the brush 58, swings the lever 57 counterclockwise, and moves the limit switch 61.
Is activated, and it is confirmed that the thread is stretched, and the rotation of the roller is stopped. As described above, if the yarn is not stretched after replacing the traveler 7, the yarn breakage occurs at the start of the ring spinning machine.

Next, the operation of the above-described traveler exchange will be described in detail. In FIG. 1, the operation unit 11 has three stations S1, S2, and S3. The first station S1 performs a preparation process for obtaining a slack of a thread necessary for replacement of a traveler, and the second station S2 performs a preparation process. The replacement work process is performed, the yarn is stretched at the third station S3, and the finishing process after the replacement is performed.
The cycle time is shortened by working together. In the first station S1, the positioning plate 16 advances and fits into the ring 5, and the operation unit 11 is positioned. Next, the roller 17 advances to reverse the bobbin 2 to loosen the yarn. The slack of the yarn is absorbed by the tensor 28 to the maximum, and after releasing from the tensor 28, the yarn is further slackened so that a loop of the shrunk yarn Y is easily formed above the traveler 7. Then, after the tensioner 28 releases the thread, the operation unit 11 travels one pitch P to the left in the drawing. Next, the yarn Y is again controlled by the tensor 20 of the second station S2.
Are stored in a zigzag manner, and the yarn Y can be fed or fed with a predetermined yarn tension. At this time, since the loop of the contracted yarn Y exists above the traveler 7,
All of the slack yarn is stored in the tensor 20 without the yarn Y coming out of the opening of the traveler 7. Next, FIG.
(A) As shown in FIG.
Arm 35 advances to a predetermined position on the flange 6. Next, when the roller 18 of FIG. 1 rotates forward, the yarn Y stored in the tensor is fed out, and the traveler 7 travels clockwise along the ring 5 with the rotation of the yarn. And FIG.
(A) The traveler 7 is locked by the claw 35a of the arm 35, and the traveling of the traveler 7 stops at a predetermined position. At this time, the roller 18 is rotated by a predetermined number by a preset control device. Next, the yarn pulling lever 21 shown in FIG. 6 draws the yarn Y so as to cross over the flange 6 of the ring 5 from above while further feeding out the yarn stored in the tensor. As a result, as shown in FIG. 6A, the yarn Y is held at a position where it does not hinder the insertion and removal of the traveler 7.

Next, as shown in FIG. 8A, the traveler 7 held in a C-shape by the arm 36 advances to a predetermined position with respect to the flange 6 of the ring, and the whole retreats in the direction. With the inner end of the traveler 7 being hooked on the flange 6, the outer end of the traveler 7 is extended and inserted into the flange 6, and the traveler 7 is
Is flipped to the back side in the thickness direction of the paper. Next, FIG.
As shown in (b), after the arm 35 rotates in the direction, the claw 35a and the tip 40a take in the traveler 7, and then the arm 35 advances in the direction, the traveler 7
Comes off the flange 6 of the ring as shown in FIG. The removed traveler 7 is held by the claw 35a and the tip 40a, and the traveler 7 is carried to the collection box 15 in FIG. 3 with the retreat of the traveler removing device 22, and the crawler 35a is separated from the tip 40a by the separation of the crawler 35. Is dropped into the collection box 15.

Thereafter, the yarn pulling lever 21 of FIG. 6 returns to the original retracted position, and the slack of the yarn is stored again in the tensor 20 of FIG. 1, and then the tensor 20 is released. Next, the released tensor 20 returns to the original retracted position, and the operation unit 11
The vehicle runs on the left side of the drawing by the pitch P. Next, the roller 19
When the roller 19 is stopped, and the slack removing device 24 shown in FIG. 9 detects that the yarn is stretched forward and the roller 19 is stopped, the yarn is not slackened and returns to the original state. In this way, the replacement of the traveler, which has conventionally been done only manually, is completely automated. In addition, the old traveler was scattered by manual replacement, but since the old traveler collection box is attached to the traveler exchanger, there is no need to clean around the ring spinning machine.

[0034]

According to the method for replacing the traveler of the present invention, the slack of the yarn hung on the traveler of the ring spinning machine is absorbed to the maximum by the tensioner in the preparation step of obtaining the necessary slack of the yarn during the replacement of the traveler. Including a loosening step allows the loosened yarn loop to form above the traveler, preventing the yarn from falling out of the traveler opening prior to replacement and reducing traveler replacement failure.

[Brief description of the drawings]

FIG. 1 is a diagram showing a traveler replacement method of the present invention.

FIG. 2 is a front view of an operation unit of the traveler exchange.

FIG. 3 is a top view of a second operation unit of the traveler exchange.

FIG. 4 is a perspective view showing a structure of a tensor.

FIG. 5 is a diagram showing the operation of the tensor.

FIG. 6 is a view showing the structure and operation of a yarn pulling lever.

FIG. 7 is a view showing the structure and operation of a traveler removing device.

FIG. 8 is a diagram showing the structure and operation of the traveler insertion device.

FIG. 9 is a diagram showing the structure and operation of a yarn tension sensor.

FIG. 10 is a front view of the ring spinning machine.

FIG. 11 is a diagram showing a problem in a conventional traveler replacement method.

[Explanation of symbols]

 7 Traveler 11 Operation section 11a First operation section 20, 28 Tensor 101 Ring spinning machine S1 First station (preparation step) S2 Second station (work step) S3 Third station (finishing step) Y yarn

Continuation of front page (56) References JP-A-5-78931 (JP, A) JP-A-5-86519 (JP, A) JP-A-5-86520 (JP, A) JP-A-5-86521 (JP) JP-A-5-86522 (JP, A) JP-A-5-86523 (JP, A) JP-A-5-86524 (JP, A) JP-A-5-86525 (JP, A) JP-A-5-86526 (JP, A) JP-A-5-86527 (JP, A) JP-A-5-86528 (JP, A) JP-A-5-86529 (JP, A) JP-A-5-132828 (JP, A A)

Claims (1)

(57) [Claims] 1. A traveler exchange method for sequentially performing a preparation process for loosening a yarn reaching a traveler, a work process for exchanging a traveler, and a finishing process for removing slack of a yarn after the exchange, wherein the preparation process includes: A traveler replacing method, comprising a step of absorbing a slack of a yarn with an openable / closable tensor, opening the tensor after the yarn is further slackened beyond the absorption limit of the tensor.