JP2531397B2 - Traveler exchange method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveler exchange method for automatically exchanging a traveler attached to a ring of a ring spinning machine, and more particularly to a traveler exchange method with an improved success rate of the traveler.

[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 105
Middle roller 106 having front and front roller 1
07 upper and lower roller pairs are arranged in order 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. 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 that can move up and down along the longitudinal direction of the bobbin 2 and can be traversed, and a ring fixed to the ring rail 4. 5, a traveler 7 which is inserted into a flange of the ring 5 and can travel in the circumferential direction, a balloon control ring 9 and a 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.

[0004] The yarn Y is wound around the bobbin 2 via a snell wire 8, a balloon control ring 9 and a traveler 7. When the bobbin 2 rotates, the traveler 7 is pulled by the yarn and runs on the flange of the ring 5 to impart twist to the yarn. There is a difference in rotation speed 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 is wound by 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.

[0005] The traveler 7 is inserted into the flange 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, it wears. 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, the old traveler is removed using an appropriate nail fitting, and a new traveler is inserted. 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, there has been a demand for a traveler exchanging method for automating the traveler exchanging. Such an automatic traveler exchange method is performed in the order of loosening the yarn reaching the traveler, rotating the yarn supplying bobbin to bring the traveler to a predetermined position for traveler exchange, and removing the looseness of the yarn after exchange. If this is sequentially performed for one yarn feeding bobbin, the cycle time becomes long. Therefore, for the three yarn supply bobbins, a preparation process for loosening the yarn reaching the traveler, a work process for exchanging the traveler, and a finishing process for removing the looseness of the yarn after the exchange are simultaneously performed to form the yarn supply bobbins. We proposed a traveler replacement method that shifts one by one and sequentially switches the preparation process, the work process, and the replacement process for one yarn feeding bobbin to shorten the cycle time.

However, when the traveler is exchanged in the working process, the traveler is often unable to be exchanged because the traveler is stopped at the position where the traveler exchanging device has advanced onto the ring 4. Therefore, at the time of shifting from the preparation process to the working process, the advance position of the traveler exchanging device on the ring 4 is lightly swept by the rod made of an elastic body to sweep out the traveler from a position where the traveler cannot be exchanged.

[0008]

However, in the process of endlessly pursuing the improvement of the success rate of traveler exchange by the traveler exchange, the movement of the traveler by the rod made of an elastic body is uncertain, and the movement of the traveler is uncertain. It has been found that insufficiency leads to failure of traveler exchange.

The present invention has been made in view of such knowledge, and an object thereof is to ensure that the traveler on the ring does not interfere with the traveler exchange device and that the success rate of the traveler exchange is high. The purpose is to provide a traveler exchange method to improve the.

[0010]

A traveler exchange method according to the present invention comprises a preparatory step for loosening a yarn reaching the traveler,
In a method of replacing a traveler traveling on a ring of a ring spinning machine by sequentially performing a work process of replacing a traveler and a finishing process of removing looseness of the thread after the replacement, the preparation process includes a replacement work in the work process. The step of traveling the traveler to a position on the ring suitable for the above is included.

[0011]

In the preparatory process, if the traveler is allowed to travel in advance within a certain range, that is, to a position on the ring suitable for replacement work in the next work process, the traveler can be included in the work process. Does not move to the position where the replacement operating device advances and does not interfere with the replacement operating device, and there is less variation in the time it takes the traveler to travel to the predetermined position where the replacement work is performed. The start time of work becomes faster.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a method of exchanging travelers according to the present invention, and particularly shows a method of rotating the bobbin 2 and a method of positioning the traveler 7 by the traveler positioning device 63 in a preparatory step described in detail below. Traveler positioning device 63
Is composed of a positioning limit switch 60, a positioning lever 61, and a spring 62, which are provided in the operation unit 11 of the traveler exchange.

FIG. 1 (a) is a view after the bobbin 2 is rotated in the reverse direction to loosen the yarn in the tensor. The distal end of the positioning lever 61 has advanced onto the ring 5 from the operation unit 11 of the traveler exchange, which will be described later. Positioning lever 61 is pin 61
It is rotatably provided on the operating part 11 of the traveler exchange with a as a fulcrum, and a spring 62 is connected to the rear end thereof to keep the tip side on the ring 5 at an angle as shown in the figure. The positioning limit switch 60 is provided at a position where its operating piece 60a abuts when the tip end of the positioning lever 61 is rotated leftward in the drawing. In this state, the bobbin 2 is normally rotated and the traveler 7 is run in the arrow direction.

In FIG. 1B, the traveler 7 travels by the forward rotation of the bobbin 2 from the state of FIG. 1A, contacts the tip end side of the positioning lever 61, and the positioning limit switch 60 is turned on. It is a figure where it became. Furthermore,
The bobbin 2 is rotated forward, and the traveler 7 travels in the direction of the arrow.

1 (c), the traveler 7 further travels from the state of FIG. 1 (b) by the forward rotation of the bobbin 2, and the contact with the tip end side of the positioning lever 61 is released, so that FIG.
The positioning limit switch 60 turned on at
It is the figure where it became in FF state. After the positioning limit switch 60 is turned off again, the traveler 7 is run for a predetermined time, after which the bobbin 2 is stopped from rotating and the traveler 7 is stopped within the range H.

In the preparatory step, if the traveler 7 is within this range H, in the traveler exchanging operation step, which is the next step, the traveler 7 moves to a position where the exchanging operating device advances and interferes with the exchanging operating device. In addition, in the preparation process, the traveler 7 is set to a certain range H
Since it is moved inward, there is less variation in the time for moving the traveler to a predetermined position where the exchanging work is performed in the next working process, and the start time of the traveler exchanging work in the working process is shortened.

As a result, it is possible to prevent interference with the traveler exchange device more reliably than the conventional passive method of sweeping and moving the traveler from a position where it cannot be exchanged, and further, the traveler exchange cycle time as a whole of the traveler exchange can be improved. shorten. The position suitable for the traveler exchange is preferably the range H described above, but the position is not limited to this and may be a range excluding the interference region of the range M in FIG. 1C.

Next, a traveler exchange applied to the above-described traveler exchange method will be described with reference to FIGS. FIG. 2 is a side view of the traveler switching machine traveling along the ring rail 4, FIG. 3 is a front view, and FIG. 4 is a top view. 2 and 3, the traveler exchange comprises an operating unit 11 and a bogie unit 12 which holds the operating unit 11 so as to be vertically movable. 13 is a power supply
It is a control unit.

A wheel 37 which rolls at the corner of the ring rail 4 and a magnet 38 and a magnet 39 directed sideways with respect to the ring rail 4 are attached to the operating portion 11. The distance between the magnets 38 and 39 and the ring rail 4 is set to a predetermined value by the guide rollers 40 and 41. As shown in FIG. 3, magnets 38, 39 are provided between the two wheels 37, 37.
Is provided, the ring rail 4 is restricted by the wheels 37, 37, and the ring rail 4 is joined at the joint D of the ring rail 4.
The edges of the are attracted so that they do not tilt horizontally.

The operating section 11 includes the slide rail 3
3 is attached to a slide body 34 that slides, and the carriage unit 1
2 can be moved up and down with respect to the section L.
In order to apply a substantially equal force F to the ring rail 4, the operating force of the magnets 38 and 39 is applied to the ring rail 4 by the attraction force of the magnets 38 and 39 regardless of the height of the ring rail 4 at any height. The wheel 37 has a structure to which an appropriate contact pressure is applied. This takes into account that the stop position of the ring rail 4 which moves up and down between the chess parts 2a of the bobbin 2 and gradually rises as the chess parts 2a of the bobbin 2 is formed is at an arbitrary height during the section L. It is. In addition, the operating unit 11
A plate 35 is attached to the, and the plate 35 is bent obliquely upward after extending downward.

The carriage unit 12 has a structure in which a frame 32 is fixed diagonally to a square frame 31, and a slide rail 33 is attached to a vertical frame of the square frame 31. The carriage 12 is provided with a constant load spring 36 formed by winding a coil spring of a thin plate having a bow-shaped cross section, and the tip of the constant load spring 36 is connected to the end of the plate 35. Therefore, an upward force F is applied to the plate 35. The applied force F is adjusted to be substantially equal to the weight G of the operation unit 11, and the weight G of the operation unit 11 is offset.

Further, the operation unit 11 includes the yarn pulling lever 2
1. The traveler attaching device 22 and the traveler removing device 23 include a first tensor 24, a second tensor 25, a first roller 26, a second roller 27, a third roller 28, and a roller 29 as a positioning member. Is provided as an operating device for traveler replacement. These operating devices are operated in a predetermined order by the cam train 42 operated by the motor M4.

The rollers 26, 27 and 28 of the carriage 12 are retracted during travel of the traveler exchange, and come into contact with the spindle 1 as shown in the figure during operation. However, rollers 26 and 2
The rotation of 7, 28 is performed by separate motors M1, M2, M3. The first roller 26 reverses the spindle 1 to slacken the yarn Y and absorbs it in the tensor, and further rotates the spindle 1 forward to cause the traveler to travel to a position suitable for replacement, as described above. The spindle 1 is normally rotated to move the traveler 7 to a predetermined position, and the third roller 28 further normally rotates the spindle 1 to stretch the yarn Y. The roller 29, which is a positioning member, is retracted as shown by a chain double-dashed line when the traveler exchange is running, and swings to a position indicated by a solid line during operation, and hits the abutting portion 44 of the stopper rail 43 to stop.

Further, as shown in FIGS. 3 and 4, the traveler changer includes a first station S1 for performing a preparation step for obtaining the slack of the yarn necessary for the traveler exchange, a second station S2 for performing the traveler exchange work step, It has three stations, S1, S2 and S3, which are the third station S3 that carries out the finishing process after the thread is stretched and exchanged, and the work for the traveler exchange is shared, and the cycle time is shortened by performing the work at once are doing.

The operating devices of the first station S1 for performing the preparation process include a first tensor 24, a first roller 26, a positioning limit switch 60, a positioning lever 61, and a spring 6
2, a second station S2 for performing a replacement work process
The operating devices are the yarn pulling lever 21, the traveler attaching device 22, the traveler removing device 23, and the second tensor 2
5 and the second roller 27, and the operating devices of the third station S3 for performing the finishing process are the third roller 28 and the slack removing device 17. When the entire traveler exchange runs at every arrangement pitch P of the ring 5, one yarn feeding bobbin 2
For the first station S1 → the second station S2
→ The third station S3 operates sequentially.

As described above, the wheels 45 that travel on the rails 10 are provided on the bogie unit 12 for traveling at every pitch P. As shown in FIG. 3, when the motor M5 makes one rotation, the wheels 45 rotate in the direction of the arrow E via the links 47, 48, and 49, and travel just the distance corresponding to the pitch P.

Next, an explanation will be given of the operating equipment for traveler exchange working at each station of the traveler exchange.

FIGS. 5 and 6 show the structure and operation of the tensor 24 of the first station S1 and the tensor 25 of the second station S2. The left diagram in FIG. 6 is a top view, and the right diagram in FIG. It is an arrow view. In FIG. 5, the tensers 24, 25
Is composed of a comb 71 having three claws 70 and a comb 73 having two claws 72. The whole of the tensers 24 and 25 can advance and retreat with respect to the yarn Y of the ring spinning machine 101.

The claws 70 and 72 of the comb 71 and the comb 73 project from the respective boards 71a and 73a.
Is fixed to the shaft 74, and the two claws 72 are the claws 70 of the comb 71.
And is rotatably inserted into a hole 75 provided in the comb 71 so as to be positioned between them. Therefore, a pair of combs 71,
The respective claws 70 and 72 of 73 are freely meshable by the rotation of the shaft 74, and hold the yarn Y in the bent portions 70a and 72a of the claws 70 and 72 and store the yarn Y in the tensor.

The tensor 24 of the second station is provided with a limit switch 76 for detecting a sufficient degree of this engagement inside the board 73a, and the detection piece 76a is provided inside the board 71a. . This degree of engagement indicates 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 engagement is sufficient, the limit switch 76 provided inside the board 73a is set to the board. When the limit switch 76 is turned on by contacting the detection piece 76a provided inside the 71a, the feeding of the yarn from the yarn supplying bobbin 2 is stopped.

Next, the operation of the tensers 24 and 25 will be described with reference to FIG. In (a), the tensors 24 and 25 are retracted to the operating unit 11. In (b), when the tensers 24 and 25 advance in the direction from the retracted position, the thread Y is moved to the claws 70 and 72.
Are located between the bent portions 70a and 72a of the. And the claw 72
Moving around the shaft 74 in the direction, the yarn Y becomes zigzag in the state of (c), the slack is absorbed, and the yarn Y is stored.

The tensor 25 of the first station S1 is for obtaining in advance the slack of the yarn Y necessary for replacing the traveler. If the slack amount of the yarn Y is insufficient, the second station S2 described below is used. 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 76 and the detection piece 76a shown in FIG. 5 are provided.

The operation of the limit switch 76 is as follows. First, in FIG. 6, the tensor 24 advances in the direction, and the claws 70 and 72 mesh in the direction. Next,
The limit switch 76 detects whether the tensor 24 has sufficient slack. If the slack amount of the yarn Y is insufficient,
Since the engagement of the claws 70 and 72 is insufficient, the limit switch 76 is not turned on. In this case, a roller (not shown) is reversed to feed the yarn from the yarn supplying bobbin. When the engagement between the claws 70 and 72 becomes sufficient and the limit switch 76 is turned on, the yarn feeding by reversing the yarn supplying bobbin 2 is stopped.

Next, the roller (not shown) is normally rotated to wind the yarn around the yarn supplying bobbin so that the traveler is moved to a predetermined position. When the traveler stops at a predetermined position, the yarn is stretched, so the limit switch 76 is turned off again and the yarn tension is detected, and it is confirmed that there is no hindrance to the next continuous operation. Although the gate tenser using a pair of combs 71 and 73 has been described as an example of the tensers 24 and 25, 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.

7A and 7B are views showing the structure and operation of the yarn pulling lever 21, FIG. 7A is a top view, and FIG. 7B is J.
FIG. In FIG. 7A, the thread pulling lever 21 is composed of a pair of levers 77 and 78, and hooks 77a and 78a are formed at the ends. Hook 77
a pulls the yarn Y2 downstream of the traveler 7 toward the inside of the ring 5, the hooking portion 78a pulls the yarn Y1 upstream of the traveler 7 toward the outside of the ring 5, and the yarn Y crosses the upper surface of the ring 5 diagonally. To hold.

At this time, since the yarn Y is held so as to cross the ring flange horizontal surface 5a obliquely in the vertical direction, as shown in FIG. The contact surface in the case of abutting against each other becomes point contact, and as shown in FIG. 9B, the yarn rolls on the upper surface of the ring 5 as the traveler attaching device 22 moves,
This prevents the traveler 7 from being inserted without the yarn Y being hooked.

FIG. 8 is a view showing the structure and operation of the traveler removing device 23. In FIGS. 8 (a) and 8 (b), the left view is a view on arrow I in the right view. The traveler removing device 23 includes a tubular body 80, an arm 79 rotatable in a direction relative to the tubular body 80, and a holding plate 81 attached to the tubular body 80 as a fixing member, as shown in FIG. Consists of. A claw 79a as a detaching member for the traveler 7 is formed at the tip of the arm 79.
When it rotates in the direction, the tip end 81a of the pressing plate 81 and the claw 79a can catch the traveler 7 so that the traveler 7 can be held. Further, the entirety of the cylindrical body 80 can advance (forward in the direction) into the ring 5.

A method of removing the traveler by the traveler removing device 23 having such a structure will be described. FIG.
6A, the tip 81a of the holding plate 81 and the claw 79
a so that the pinched portion of the traveler 7 by the a is located at the position of the abdomen 7a on the side where the yarn of the traveler 7 is hung.
The tubular body 80 is advanced (moved in the direction) to the ring 5. When the bobbin is normally rotated to wind the yarn Y and move the traveler 7, the traveler 7 enters between the holding plate 81 and the claw 79a, hits the arm 79 and stops. And
The arm 79 is turned in the direction.

In FIG. 8B, the arm 79 is swung in the direction and the traveler 7 is held between the tip 81a of the pressing plate 81 and the claw 79a of the arm 79.
In FIG. 8C, the sandwiching portion 7a of the traveler 7 is
The traveler's opening 7c is in the opening direction, and the traveler 7 is removed from the ring 5 by lifting it upward in a direction perpendicular to the upper surface of the ring 5.

In this way, the traveler holding portion 7a
Is the direction in which the opening 7c of the traveler opens, and when the traveler 7 is removed from the ring 5 by lifting it upwardly perpendicular to the upper surface of the ring 5, the yarn Y hooked on the traveler 7 once together with the traveler 7 Even if it is lifted vertically upward, it immediately falls vertically downward, and it is no longer said that it is pulled and cut while being caught by the removed traveler 7.

When the traveler removing device 23 advances to a predetermined position, if the traveler 7 is present at the position where it comes into contact with the traveler removing device 23, the removal of the traveler fails. Therefore, in the preparation process, as shown in FIG.
The traveler 7 is made to travel in advance to a position on the ring suitable for the replacement work in the working process by the method shown in FIG.

9 and 10 are views showing the structure and operation of the traveler attaching device 22. In FIG.
(A) is an overall perspective view and (b) is an enlarged view of a main part. The traveler mounting device 22 includes an arm 82 into which a large number of the travelers 7 are fitted, a cutout member 83, and a leaf spring 8.
It consists of 4. By moving the cutout member 83 in the direction, the traveler 7 is sent out to the tip while holding down one of the travelers 7. As shown in FIG. 7B, the tip 82a of the arm 82 is bent, and the traveler 7 is held in a vertical C-shape. Then, when the whole traveler attaching device 22 is retracted (in the direction) from the inside to the outside of the ring 5, the traveler 7 is attached to the ring 5. 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 84 in FIG.

Referring to FIG. 10, the traveler mounting device 2
2 will be described. In FIG. 10, (a) shows that the traveler attachment device 22 has advanced inside the ring 5. At this time, the traveler 7 moves the arm 82
Are not accurately held in the vertical C-shape by the tip 82a of the. Then, the ring 5 is slightly moved from the inside to the outside (in the direction) as it is, and the state shown in FIG.

FIG. 2B shows the traveler mounting device 2
2, once retreat a little outward (direction) of the ring,
The one end 7b of the traveler 7 is shown in contact with the upper surface of the ring 5. Therefore, it is difficult for the traveler 7 to move in the direction, and only the traveler attaching device 22 moves, and the holding position of the traveler 7 is slightly shifted in the direction. Then, the other end 7d of the traveler 7 is supported by the one end 7b as a fulcrum.
It descends in six directions.

At this time, once on the outer side (direction) of the ring
When the traveler mounting device 22 slightly retracted toward the ring 7 is advanced slightly from the ring outer side to the inner side (85 direction) as shown in FIG.
d descends in the 86 direction with the one end 7b as a fulcrum, and FIG.
The state shown in is shown.

When the traveler attaching device 22 is slightly retracted to the outer side (direction) of the ring in the state shown in FIG. 7D, the other end 7d of the traveler 7 is caught by the ring 5 and is further retracted. The traveler 7 is attached to the ring 5.

Thus, the traveler mounting device 22
When the vehicle repeats the advance and retreat twice into the ring 5, the first time is accurately moved up and down by the traveler attaching device 22.
The traveler 7, which is not held in a character shape, is also held exactly in a vertical C shape by the second advance.

FIG. 11 is a top view showing the structure and operation of the yarn slack eliminating device. The slack eliminating device 17 includes an L-shaped lever 5
7, a brush 58 is implanted on one arm, and the posture shown in the figure is maintained by a spring 59 and a stopper 54 for the other arm. A limit switch 55 is provided for the other arm of the lever 57. When the bobbin is normally rotated by the roller 28 in FIG. 3, the slack yarn is wound, but when the yarn is stretched, the traveler 7 travels along the ring 5. The traveler 7 pushes into the brush 58 and swings the lever 57 in the counterclockwise direction.
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.

A traveler exchanging method using the traveler exchanging machine having such a traveling exchanging device for exchanging traveler will be described based on the operation at each station of FIGS. 3 and 4. The rollers 26, 27, 28 can contact the side surfaces of the three bobbins 2 and can be independently rotated by a motor. It is assumed that the operation unit 11 performs a traveler exchange operation from left to right in the drawing.

At the first station S1, the positioning plate 16 shown in FIG.
Is positioned. Next, the roller 26 advances to reverse the bobbin 2 and loosen the yarn. This slack of the yarn is absorbed to the maximum by the tensor 24 shown in FIG. Then, the traveler 7 is caused to travel to the position H on the ring 5 suitable for the replacement work in the second station S2 by the positioning method by the traveler positioning device 63 described in FIG.
Thereafter, after releasing from the tensor 24, the thread is further loosened so that a loop of the contracted thread Y is easily formed above the traveler 7. Then, after the tensor 24 releases the yarn, the operating unit 11 travels to the right side in the drawing by one pitch P and moves to the second station S2.

Next, in the second station S2,
The yarn Y is stored again in a zigzag manner by the tensor 25 shown in FIG. 5, 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, the yarn Y does not come out from the opening of the traveler 7 and the entire loose yarn is stored in the tensor 25. Next, the arm 79 of the traveler removal device 23 shown in FIG. It advances to a predetermined position on the ring 5 so that it becomes the position.

Next, when the roller 27 rotates in the normal direction, the yarn Y stored in the tenser 25 is fed out, and the traveler 7 travels along the ring 5 in the clockwise direction as the yarn rotates. Then, the traveler 7 is locked by the claw 79a of the arm 79 in FIG. 8A, and the traveling of the traveler 7 stops at a predetermined position. At this time, the roller 27 rotates by a predetermined number by a preset control device. Next,
The yarn pulling lever 21 shown in FIG. 7 pulls the yarn stored in the tensor further and pulls the yarn Y from above so as to cross the ring 5. As a result, as shown in FIG. 7A, the yarn Y
Is held at a position that does not hinder the insertion and removal of the traveler 7. At this time, the yarn Y is held so as to cross the ring flange horizontal surface 5a diagonally in the vertical direction.

Next, the arm 79 of the traveler removing device 23 shown in FIG. 8 (b) rotates in the direction to move the claw 79a.
And after the tip 81a has taken in the traveler 7, FIG.
As shown in (c), the claw 79a and the tip 81a of the holding plate are provided.
Is lifted upward perpendicular to the upper surface of the ring 5 to remove the traveler 7 from the ring 5 in the direction in which the opening 7c of the traveler opens. The detached traveler 7 has a claw 79a and a tip 81.
The traveler removing device 2 which is still held by a.
When the Traveler 7 exits, the Traveler 7 collects the Recovery Box 15 in FIG.
And the claw 79a is separated from the tip 81a, so that the traveler 7 is dropped into the collection box 15.

Next, the traveler 7 held by the arm 82 of the traveler attaching device 22 shown in FIG. 9 (a) advances to a predetermined position on the inner peripheral side of the ring 5, and once the whole of the ring 5 moves to the outside of the ring 5 ( Direction). Then, after a little further inward into the ring 5, the entire traveler attaching device 22 retreats outward (in the direction) from the ring 5, and the inner end 7 d of the traveler 7 is hooked on the ring 5, and the outer end 7 b of the traveler 7 remains. Is stretched, inserted into the ring 5, and the traveler 7 is flipped by the leaf spring 84 to the depth side in the thickness direction of the paper.

After that, the yarn pulling lever 21 of FIG. 7 returns to the original retracted position, the slack of the yarn is stored again in the tensor 25 of FIG. 5, and then the tenser 25 is released. Next, the released tensor 25 returns to the original evacuation position, and the operation unit 11
The vehicle travels on the right side of the drawing by the pitch P and moves to the third station.

Next, at the third station, when the roller 28 is rotated in the normal direction and the thread is tensioned by the slack eliminating device 17 of FIG. 11 and the roller 28 is stopped, the slack of the thread is eliminated and the thread returns to its original state. Become.

[0057]

As described above, according to the method for exchanging traveler according to the present invention, in the preparatory step for obtaining the slack of the yarn necessary for exchanging the traveler, the traveler is set within a certain range in advance, that is, on the ring suitable for exchanging work in the working step. By including the process of actively traveling in the position, it is possible to reliably prevent the traveler from remaining at the position where the replacement operating device advances and interfering with the replacement operating device in the working process. Traveler exchange failure due to interference with equipment is eliminated, and exchange success rate is improved. Further, since the variation in the time for moving the traveler to the predetermined position for performing the exchanging work in the working process is reduced and the start time of the traveler exchanging work in the working process is shortened, the cycle time for the traveler exchanging can be shortened.

[Brief description of drawings]

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

FIG. 2 is a side view of the traveler exchange.

FIG. 3 is a front view of the traveler exchange.

FIG. 4 is a top view of the traveler exchange.

FIG. 5 is a perspective view showing a structure of a tensor.

FIG. 6 is a diagram showing the operation of the tensor.

FIG. 7 is a diagram showing a structure and an operation of a yarn pulling lever.

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

FIG. 9 is a view showing a structure of a traveler attaching device.

FIG. 10 is a view showing the operation of the traveler mounting device.

FIG. 11 is a view showing the structure and operation of the yarn slack removing device.

FIG. 12 is a front view of a ring spinning machine.

[Explanation of symbols]

 2 bobbin 4 ring rail 5 ring 7 traveler 60 limit switch 61 positioning lever 62 spring 63 traveler positioning device

Claims (1)

(57) [Claims] 1. Running on a ring of a ring spinning machine by sequentially performing a preparatory process for loosening the yarn reaching the traveler, a work process for exchanging the traveler, and a finishing process for removing the looseness of the yarn after the exchange. In the method of replacing the traveler,
The traveler exchanging method, wherein the preparing step includes a step of causing the traveler to travel to a position on the ring suitable for the exchanging operation in the operation step.