JPH0586526A - Traveler exchanger - Google Patents

Abstract

PURPOSE:To enable smooth action of a yarn-pulling lever while delivering a yarn from a tensor by moving the yarn-pulling lever after absorbing the slackening of the yarn with the tensor. CONSTITUTION:The removal and insertion of a traveler 7 are carried out by moving a yarn-pulling lever 21 after absorbing the slackening of the yarn with a tensor 20. It is not necessary to rotate a bobbin interlocked with the yarn- pulling lever.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveler changer for automatically changing a traveler inserted in a ring of a ring spinning machine.

[0002]

2. Description of the Related Art First, a ring spinning machine in which a traveler is used will be described with reference to FIG. A bobbin 2 is attached to a spindle 1 having a bearing (not shown). The spindle 1 is rotated by the belt 3 at a high speed, usually around 10,000 to 20,000 RPM. The belt 3 is wound around a spindle 1 of four weights (a total of two weights on the front side and two weights on the back side), and the spindle 1 is rotationally driven by a drive pulley (not shown). However, idling is possible by applying a force to the spindle 1 when stopped. Further, the ring rail 4 moves up and down along the longitudinal direction of the bobbin 2, and the bobbin 2 in the inserted state is positioned with respect to the ring 5 fixed to the ring rail 4. A flange 6 is formed at the upper end of the ring 5, and a traveler 7 is attached to the flange 6. The yarn Y is wound around the bobbin 2 via the snell wire 8, the balloon control ring 9 and the traveler 7. When the bobbin 2 rotates, the traveler 7 is pulled by the yarn, runs on the flange 6 of the ring 5, and imparts 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 friction resistance body for producing a difference in the number of revolutions, and at the same time, they are a traveling direction changing mechanism for a twisting action to a winding action.

The traveler 7 is a C-shaped metal fitting and is attached to the flange 6 of the ring 5. Since this traveler 7 rotates at high speed on the flange 6 at around 10,000 to 20,000 RPM, it is worn. Therefore, it is necessary to replace the traveler 7 with an old one every 1-2 weeks.

Conventional traveler replacement methods have been manual. That is, an appropriate traveler is used to remove the old traveler and insert a new traveler. As a tool for inserting this new traveler
The traveler mounting device disclosed in Japanese Patent No. 44975 may be used.

[0005]

The conventional traveler exchange method uses a tool but is manual, and it takes a considerable amount of time even for a skilled person to exchange all the travelers of a ring spinning machine having a large number of weights. Therefore, there is a problem that personnel for this traveler exchange are required.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a traveler exchange capable of automating traveler exchange and achieving labor saving. It is a thing. In particular,
Since the traveler is located at an arbitrary position on the ring in a state in which the thread is hooked, it is necessary to determine the position of the traveler and replace the thread with a specific thread when replacing the traveler.

[0007]

A traveler exchanging machine of the present invention is a traveler exchanging machine having a yarn shifting lever, a traveler removing device, and a traveler inserting / placing device. Is provided.

[0008]

Operation: In order for the thread shifting lever to move the thread of the traveler to a specific position to operate, it is necessary to loosen the thread. However, if the tensor absorbs the looseness of the thread in advance, the thread shifting lever will move. It operates while unwinding the thread from the tensor.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an operating portion of a traveler exchange, FIG.
Is a top view of the operation part of the traveler exchange, and FIG. 3 is a view showing the whole traveler exchange. First, the whole traveler exchange will be described with reference to FIG. 3, and then the essential parts thereof will be described.

FIG. 3A is a side view and FIG. 3B is a front view. In the figure, the traveler exchange comprises a trolley unit 12 that supports the operating unit 11, and a power / control trolley 13 connected to the trolley unit 12. The trolley | bogie part 12 has the base 43 to which the wheels 41 and 42 with respect to the rail 10 of the ring spinning machine were attached, and the leaf spring 44 planted in the base 43.
And a guide rod 45 erected on the leaf spring 44. The operation unit 11 is supported by the guide rod 45 via a linear bearing or the like so as to be able to move up and down. A pulley 47 is attached to the tip of the guide rod 45, and a counterweight 49 for the operation unit 11 is suspended via a wire 48. A compression spring 62 shown by a two-dot chain line can be used instead of the counter weight 49.

Further, the operating portion 11 has wheels 50 arranged at an angle of 45 ° which roll on the corners of the ring rail 4. A magnet is fitted in the outer peripheral recess of the wheel 50, and the magnet is attracted to the corner of the ring rail 4 so that the wheel 50 is rotationally driven by the motor 51. 4A and 4B are diagrams showing an example of driving the wheels 50 by a link and a cam mechanism instead of the motor 51. FIG. 4A is a sectional view and FIG. 4B is a sectional view taken along line AA of FIG. In the figure, an intermediate rotor 71 is attached to a fixed shaft 70.
Is rotatably supported, and the wheel 5 is attached to the intermediate rotor 71.
0 is rotatably supported. A ratchet wheel 71a is attached to the intermediate rotating body 71, and a latch 72 that engages with the ratchet wheel 71a in one direction and slides in the other direction is attached to the wheel 50. Further, a cam row 73 is provided on the outer periphery of the intermediate rotating body 71.
A reciprocating link 74 is connected by. The cam row 73 is for operating each device such as a traveler removing device described below, and the link 74 reciprocates at a predetermined timing. When the link 74 moves in the direction of the arrow, the wheel 50 rotates in the direction of the arrow via the ratchet wheel 71a and the latch 72, and the operating portion quickly travels by a distance corresponding to the ring arrangement pitch P. And
The positioning mechanism described below positions the ring rail 4 on the ring.

Returning to FIG. 3, the power supply / control carriage 13 connected to the carriage unit 12 has wheels 52 for traveling on the floor, and is capable of following traveling. The power / control carriage 13 and the base 43 of the carriage unit 12 are connected via a link 53. The power supply / control carriage 13 is usually equipped with a lead storage battery and has a weight two to three times as large as that of the operation unit 11, so that the power supply / control carriage 13 can also be detached and run on the floor. 5 is a diagram showing a case where a magnet is used instead of the magnet-equipped wheel 50 of FIG. 3, and FIG. 5 (a) is a top view,
The same (b) is a side view. Vertical wheels 54 on the ring rail 4
The horizontal wheel 55 is mounted on the operating portion 11, and the magnet 56 is attached to the operating portion 11 at an appropriate position. Wheel 5
4, 55 are standard, but ring rail 4 and magnet 56
Gap is set to the minimum, and the ring rail 4 and the operating part 11 are
A strong adsorption force acts between them.

The mounting and running of the above-mentioned traveler exchange on the ring spinning machine will be described below. In FIG. 3, when the link 53 is raised and the base 43 and the power supply / control carriage 13 are hooked, the wheels 52 of the power supply / control carriage 13 are
The entire traveler exchange can be carried by. Therefore, the operator transports the traveler exchanging machine to the side of the ring spinning machine requiring the traveler exchanging. Then, the link 53 is lowered and the wheels 41 and 42 are placed on the rail 10. By the way, the ring rail 4 of the spinning machine moves up and down in the section of the stroke L during operation. Therefore, when the spinning machine is stopped, the ring rail 4 stops at an arbitrary height within the stroke L. Therefore, the operator adjusts the height while moving the operation unit 11 up and down to adsorb the wheels 50 to the corners of the ring rail 4. At this time, the height can be easily adjusted by the counterweight 49, and an excessive load moment does not act on the ring rail 4. The counterweight 49 is preferably adjusted so as to apply a slight downward load to the ring rail 4. This is because, in general, the ring rail 4 has a structure in which it can be removed by an upward force. Further, it is sufficient to place the operation unit 11 at a predetermined position by using the magnet-equipped wheel 50 of FIG. 3 and the magnet 56 of FIG.
It can be easily attached to and detached from the ring rail 4. At this time, since the heaviest power source / control carriage 13 is separated from the operation unit 11, the operation is easy.

When exchanging the rings, the wheels 50 rotate in a predetermined manner by the motor 51 of FIG. 3 or the links 74 of FIG. 4, and the operating portion 11 can travel at the arrangement pitch P of the rings 5 of the ring rail 4. Has become. Running section 11
Travels to the base 43 via the leaf spring 44, and further to the power supply / control carriage 13 via the link 53, so that the entire traveler exchange operates. In addition, the presence of the leaf spring 44 enables the operating portion 11 to be slightly moved, and the positioning of the operating portion 11 with respect to the ring 5 can be performed with a small force. That is, the operation section 11 is separated via the leaf spring 44, and the positioning mechanism described below is used to quickly determine the position of the operation section 11. A motor for driving the wheels 52 of the power supply controller 13 is separately provided, and the stress sensor 44a is attached to the leaf spring 44.
When a certain amount of load is applied to the leaf spring 44,
The power supply control unit 13 can also be self-propelled and follow up.

6 (a) and 6 (b) are views showing another embodiment of the trolley part. FIG. 6 (a) is a side view and FIG. 6 (b) is a front view. The operation unit 11 of FIG. 6 is different in that a portion corresponding to the power supply / control carriage of FIG. 3 is also incorporated. The operation unit 11 is supported by the two columns 63 and 64 via a compression spring 65 so as to be vertically slidable. In short, with respect to an arbitrary stop height within the section L of the ring rail 4, the operation portion 11
It is important that the vertical position can be adjusted, and the load on the ring rail 4 is reduced by the compression spring 65. The columns 63 and 64 are erected on a base 66, and the base 66 has wheels 67 and 68. The wheel 67 is mounted near the columns 63 and 64 and is for traveling along with the wheel 50 along the ring spinning machine. The wheels 68 are inclined outward, and are for carrying the operation portion 11 with a slight inclination. In addition, the wheels 67 are set on the floor (FL).
Instead of the rail 10 installed along the ring spinning frame
It is also possible to drive. But the wheels 6
When 7 is placed on the rail 10, the procedure for moving the traveler exchange machine between the ring spinning machines becomes complicated.
On the other hand, when the wheels 67 travel on the floor surface (FL), the lateral movement speed of the traveler exchange may be limited due to the unevenness of the floor surface (FL). In that respect, like the traveler exchange shown in FIG. 3, when the operation unit 11 and the power supply / control carriage 13 are separated by connecting them through the link 53, the ring spinning machines can be easily moved to ensure smooth running. it can.

As shown in FIGS. 1 and 2, the operating portion 11 of FIG. 3 or 6 is provided with a positioning plate 16, rollers 17, 18, 19 which can be attached to and detached from three bobbins, and a tensor. 20, thread shifting lever 21, traveler removing device 22, traveler inserting device 23, and slack removing device 2
4 and a collection box 15 are provided. The positioning plate 16, the tensor 20, the thread shifting lever 21, and the traveler removing device 2 except for the rollers 17, 18 and 19
2. The traveler insertion device 23 and the slack eliminating device 24 are operated by a cam row attached to a common cam shaft.

The positioning plate 16 of the positioning mechanism is shown in FIG.
As shown in (a), it is a plate having a semi-circular portion 16a fitted below the ring 5. By pushing the positioning member 16 toward the ring 5, the position of each device included in the operation unit 11 with respect to the ring 5 is determined. That is, as shown in FIG. 2B, the ring 5 has a flange 6 into which the traveler 7 is inserted and a mounting flange 5a for the ring rail 4, and a positioning member 16 for the mounting flange 5a. The semi-circular portion 16a is fitted. As described above, when the positioning plate 16 is provided in the pretreatment station S1, the positioning plate 16 cannot be used when the traveler is exchanged for the ring at the end of the ring rail 4. Therefore, it is necessary to provide another positioning mechanism for the ring of the terminal. Therefore, the positioning plate 16 may be a positioning mechanism provided in the processing station S2 of the operation unit 11. In this case, the terminal ring can be positioned with respect to the ring, but it is necessary to devise a design for installing other devices such as the old traveler collection box 15. Furthermore, FIG.
7A and 7B are views showing another positioning mechanism, FIG. 7A is a top view, and FIG. 7B is a side view. Square holes 77 corresponding to the positions of the rings 5 are preliminarily formed on the side surfaces of the ring rail 4. The operating portion 11 has a roller 76 urged in the protruding direction.
Is provided, and the roller 76 is positioned by pushing the roller 76 into the square hole 77 on the side surface of the ring rail 4. In this case, the ring rail 4 can be positioned with respect to the ring, but the square hole 77 needs to be machined in the ring rail 4. As described above, although there are various positioning mechanisms, they are appropriately selected and used according to the device specifications. Further, instead of using the positioning plate 16 and the rollers 76 described above, a positioning mechanism that strictly controls the traveling distance of the operation unit 11 using a sensor can be used.

Returning to FIG. 2, the rollers 17, 18, and 19 have three
The bobbin 2 can be brought into contact with the side surface of the bobbin 2 and can be separately rotated by a motor. Assuming that the operation unit 11 performs the traveler replacement work from right to left in the drawing, the roller 17
Reverses bobbin 2 to loosen the thread. The roller 18 rotates the bobbin 2 in the forward direction and winds the yarn accumulated in the tensor, and moves the traveler 7 to a predetermined position (a predetermined position is determined by the traveler removing device described below serving as a stopper). The roller 19 rotates the bobbin 2 in the normal direction to remove the looseness of the yarn and stretches the yarn.

FIG. 8 is a diagram showing the structure and operation of the tensor, and FIG. 8 (a) shows before operation and FIG. 8 (b) shows after operation. As shown in FIG. 8A, the tensor 20 is composed of a pair of combs 31 and 32 that can be meshed with each other, and the comb 31 has three claws 3.
1a, and the comb 32 has two claws 32a. When the tenser 20 advances in the direction from the retracted position, the yarn Y is located between the claws 31a and 32a. And the claws 31a, 3
When 2a meshes in the direction and becomes the same state (b), the yarn Y becomes zigzag, the slack is absorbed, and the yarn Y is stored. This tenser 20 has a meshing stroke that can absorb all the yarn that the roller 17 has loosened in advance,
It is possible to apply a predetermined tension within a range in which the yarn is not broken after the meshing. Therefore, the yarn pulling lever described below reliably hooks the yarn stretched by the tensor 20, and the yarn can be pulled within the range of the yarn Y that has been loosened in advance. Further, a detection piece 26a is attached to the base of the tensor 20, and the limit switch 26 can detect the thread tension. The operation of the limit switch 26 is as follows. First, the tenser 20 advances in the direction, and the claws 31a and 32a 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 (the operation of the yarn shifting lever described below becomes incomplete), the limit switch 26 will not turn ON. When the looseness is insufficient, a roller (not shown) is reversed to feed the yarn from the yarn supplying bobbin. The limit switch 26 is turned on and the thread Y
Sufficient slack is detected. Next, a roller (not shown) is normally rotated to wind the yarn around the yarn supplying bobbin so that the traveler travels to a predetermined position. When the traveler stops at the specified position, the thread is stretched, so the limit switch 26 is turned off.
Then, the tension of the thread is detected, and it is confirmed that there is no hindrance to the next continuous operation. Although the gate tensor using the pair of combs 31 and 32 has been described as an example of the tensor, an air tensor that absorbs slack by sucking and calling air may be used. However, the air tensor requires an air source, has a small additional tension, and is not suitable for detecting the thread tension by the above-mentioned limit switch 26, and the gate tensor is preferable.

9A and 9B are views showing the structure and operation of the yarn pulling lever. FIG. 9A is a top view and FIG. 9B is a sectional view of a ring. In FIG. 9A, the yarn pulling lever 21 is composed of a pair of levers 33 and 34, and has a hook 33 at the tip.
a and 34a are formed. As for the yarn Y1 above the traveler 7, the hooking portion 33b of the lever 34 moves from above to below while hanging the yarn. For the yarn Y2 below the traveler 7, the hooking portion 33a of the lever 33 once hangs down and hangs the yarn Y2. Then, as shown in (b), the yarn Y is carried to a position below the flange 6 and along the ring 5. The yarn Y does not necessarily have to be removed from the traveler 7. Also. Prior to the operation of the yarn pulling lever 21, the traveler removing device 22 comes to a predetermined position, and the arm 35 serves as a stopper to stop the traveler 7 traveling with the forward rotation of the roll at a predetermined position. Then, the yarn pulling lever 21 pulls the yarn to a position along the flange 6 of the ring 5, and holds the yarn at a position that does not interfere with the operation of the traveler removing device 22.

FIG. 10 is a view showing the structure and operation of the traveler removing device. As shown in (a) and (b), 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, and the arm 35 rotates with respect to the tubular body 39. Is possible. A pressing plate 40 as a fixing member is attached to the tubular body 39, and when the claw 35a of the arm 35 rotates in the direction, the tip 40 of the pressing plate 40 is attached.
The traveler 7 can be held by the a and the claw 35a. Further, the entire tubular body 39 can advance in the direction. Further, the arm 35 also serves as a stopper for the traveler 7, and when the roller 18 in FIG. 2 is normally rotated and the yarn is wound, the traveler 7 moves as shown in FIG.
It enters between a and hits the arm 35 and stops. Then, when the arm 35 turns in the direction, the traveler 7 is taken in and lifted from the flange 6 of the ring, as shown in FIG. Further, when the tubular body 39 advances in the direction, the traveler 7 is disengaged from the ring flange 6 as shown in FIG. If the traveler removing device 22 moves forward to a predetermined position, and the traveler 7 is present at a position where it comes into contact with the traveler removing device 22, the removal of the traveler fails. Therefore, FIG.
As shown in FIG. 7, the lever 27 made of an elastic material pushes the traveler 7 out of the contact position of the traveler removing device 22 by pushing the traveler. The traveler inserting device described below may approach the flange 6 of the ring first, and in this case, the lever 27 pushes the traveler 7 away from the approaching position of the traveler inserting device as well. ..

11A and 11B are views showing the structure and operation of the traveler insertion device. FIG. 11A is an overall perspective view and FIG. 11B is an enlarged view of a main part. At (a), the traveler insertion device 23 includes an arm 36 in which a large number of the travelers 7 are fitted.
And a cutout member 37 and a leaf spring 38. By moving the cutting member 37 in the direction, one of the travelers 7 is pressed and fed to the tip. As shown in (b), the tip 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 retracts in the direction, the traveler 7 is attached to the ring flange 6. At the same time, the free traveler 7 is repelled by the leaf spring 38 shown in FIG. 9A to the back side in the thickness direction of the paper.

FIG. 12 is a top view showing the structure and operation of the yarn slack eliminating device. The slack eliminating device 24 is an L-shaped lever 5
A brush 58 is planted on one arm of No. 7, and the posture shown in the drawing is maintained by a spring 59 and a stopper 60 for the other arm. Further, a limit switch 61 is arranged on the other arm of the lever 57. When the bobbin rotates forward with the roller 19 in FIG. 1, the loose thread is wound, but when the thread is stretched, the traveler 7 runs along the ring 5 as shown in FIG. The traveler 7 thrusts into the brush 58, swings the lever 57 counterclockwise, operates the limit switch 61, confirms that the thread is stretched, and stops the rotation of the roller. Thus, the Traveler 7
If the thread is not stretched after replacing the thread, thread breakage will occur at the start of the ring spinning machine.

Next, a traveler exchange method by the above-mentioned traveler exchange will be described. In FIG. 1, the operation unit 11 has three stations S1, S2 and S3. The yarn is loosened at the pretreatment station S1, the traveler is replaced at the treatment station S2, and the yarn is stretched at the posttreatment station S3. In this way, the cycle time is shortened by sharing the work and doing it all at once. In the pretreatment station S1, the roller 17 is located on the central bobbin 2, and the central bobbin 2 is reversed to loosen the yarn. Then, the operating portion 11 travels one pitch P to the left side of the drawing, and the station S2 is in the illustrated state. Next, the positioning plate 16 advances and fits into the ring 5, and the leaf spring 44 allows the operating portion 11 to easily follow the position of the ring 5 for positioning. Next, the yarn Y is stored in a zigzag shape by the tensor 20, and the yarn Y can be fed or fed with a predetermined yarn tension. Next, FIG.
As shown in (a), the traveler removal device 22
Arm 35 advances to a predetermined position on the flange 6. Next, when the roller 18 shown in FIG. 1 rotates in the forward direction, the yarn Y stored in the tenser is delivered, and the traveler 7 travels along the ring 5 in the clockwise direction as the yarn rotates. And in FIG.
The traveler 7 is locked by the claw 35a of the arm 35 in (a), and the traveling of the traveler 7 is stopped 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 further pulls out the yarn stored in the tensor and pulls the yarn Y from above to below the flange 6 of the ring 5 (and the movement of the levers 33 and 34). As a result, FIG. 9 (b)
The yarn Y is held at a position along the ring 5 that does not hinder the removal of the traveler 7, as shown in FIG.

Next, as shown in FIG.
After the arm 35 rotates in the direction and the pawl 35a and the tip 40a take in the traveler 7, when the arm 35 advances in the direction, the traveler 7 is disengaged from the flange 6 of the ring as shown in FIG. 10 (c). The disengaged traveler 7 is still held by the pawl 35a and the tip 40a, and the traveler 7 is carried to the top of the collection box 15 in FIG. 2 as the traveler removing device 22 exits. Are dropped into the collection boss 15. Next, FIG.
As shown in (a), the traveler 7 held in the C-shape by the arm 36 advances to a predetermined position with respect to the flange 6 of the ring, and the whole retracts in the direction. Traveler 7
The outer end of the traveler 7 is stretched and is attached to the flange 6 while the inner end of the is retained by the flange 6.
The leaf spring 38 causes the traveler 7 to be blown away in the depth direction of the plane of the drawing.

Next, a method for surely threading the yarn on the traveler will be described with reference to FIG. 13A is a top view, and FIGS. 13B and 13C are side views. In FIG. 13A, the yarn Y pulled by the hooking portions 33a and 33b of the yarn pulling lever is located in contact with the lower corner of the side surface of the flange 7 at point A, but is separated from the flange 7 at point B. ing. The yarn between points A and B is tangential to the flange 7. Further, as shown in FIG. 13 (b), the yarn Y near the hooking portions 33 a, 33 b rises diagonally toward the middle of the flange 6. The traveler 7 is attached to the yarn Y in such a state at the point A. At the same time when the traveler 7 separates from the traveler insertion device 38, the traveler 7 is repelled in the direction of the arrow and travels, and the yarn Y is pinched at point B and stopped. In this stopped state, the yarn Y is completely moved to the traveler 7.
Exists in. That is, even if the yarn Y is lifted from the state of the point A, the yarn Y does not necessarily enter the traveler 7, but from the state of the point B, as shown in FIG. In the process in which 33b returns to the original position diagonally above, the yarn Y enters the traveler 7 and is pulled toward the center. In this way, the yarn Y is appropriately placed and the traveler 7 travels so that the yarn Y is reliably hung on the traveler 7.

FIG. 14 shows a yarn pulling method which makes the yarn hooking as shown in FIG. 13 unnecessary. FIG. 14A is a top view, and FIGS. 14B, 14C, and 14D are thread state diagrams. FIG. 14 (a)
In the above, the hook portion 33a moves the lower thread Y2 toward the inside of the flange 6, the hook portion 33b moves the upper thread Y1 toward the outside of the flange 6, and holds the thread Y so as to diagonally cross the upper surface of the flange 6. It is a thing. In this case, the positions of the yarns at the point A of the hooking portion 33a, the point C of the hooking portion 33b, and the point B in the middle are as shown in FIG.
It is in the position shown in. Therefore, B in FIG.
At the same time when the traveler 7 is inserted and attached at the point position, the thread Y is hooked on the traveler 7. Therefore, it is not necessary to flip the traveler 7 as shown in FIG. By the way, it is preferable to prevent the yarn Y from being carried together with the old traveler by a procedure in which the traveler removing device removes the old traveler after the traveler inserting device inserts the new traveler. In this case, the two traveler, old and new, must be located in the transverse section A-C.
Therefore, if the yarn is held so that the starting point A of the transverse cut portion A-C substantially overlaps with the tangent line of the inner circumferential circle of the ring 5, the transverse cut portion AC can be made the longest. The transverse section A-C becomes shorter as it deviates from the tangent line of the inner circle. For example, as shown in FIG. 14C, if the width of the crossing portion in the longitudinal direction of the ring 5 is smaller than the width of the traveler 7, the attachment and removal of the traveler 7 may fail. However, as shown in FIG. 14 (d), if the width of the transverse portion in the longitudinal direction of the ring 5 is larger than the width of the traveler 7, the traveler 7 can be reliably attached and removed.

After the traveler is mounted by the traveler mounting device, the thread pulling lever 21 shown in FIG. 9 returns to the original retracted position, and the slack of the thread is stored again in the tenser 20 shown in FIG. Is released. Next, the released tensor 20 returns to the original retracted position, the operating portion 11 travels one pitch P to the left side in the drawing to become the post-processing station S3, and the roller 19 becomes the position of the central bobbin 2. When the roller 19 rotates in the normal direction and the thread is stretched and is detected by the slack eliminating device 24 in FIG. 12, and the roller 19 stops, the thread is no longer loosened and the thread returns to its original state. In this way, the exchange of travelers, which was previously thought to be done only manually, is completely automated. Further, although the old traveler was scattered by the manual replacement, the traveler changer has an old traveler collection box attached, so that it is not necessary to clean around the ring spinning machine.

By the way, as is easy to understand in the above description, the first step of moving the traveler to a predetermined position, the second step of thread shifting, the third step of traveler removal, the fourth step of traveler insertion, and the thread tensioning. What was performed in the order of the fifth step of No. was described, but regarding the second to fourth steps,
Usually, they are performed in parallel at the same time. In addition, the order of the fourth step of the traveler insertion and the third step of the traveler removal can be reversed, and appropriate changes can be made.

In the above embodiment, the roller 1 shown in FIG.
The case has been described in which 7 reverses to loosen the yarn in advance, the operating portion 11 travels by the pitch P, and the tenser 20 operates. However, if you loosen the thread, it will come off the traveler,
In the next step, it may not be possible to bring the traveler in place on the ring. Therefore, it is preferable to provide a tenser also in a portion corresponding to the roller 17 so as to ensure that the slack is above the ring 5. Further, in the above-described embodiment, the case where the stations S1, S2 and S3 are provided and the cycle time is shortened has been described. It can be performed. In this case, by narrowing the device width of the operation unit 11 and performing positioning for the work target ring, the ring replacement work can be completed for each station and also for the terminal ring of the ring spinning machine. Exactly the same ring exchange work can be performed.

Next, another traveler exchange of the present invention will be described with reference to FIG. FIG. 15 is a top view of the operation portion of the traveler exchange. 2 is different from that shown in FIG.
Is provided. Stopper 25 is roller 1
It is provided at a position corresponding to 7, and the sensor 25a can detect that the traveler 7 has hit the tip. That is, the bobbin 5 is normally rotated by the roller 17,
When the traveler 7 is moved and the traveler 7 hits the tip of the stopper 25, the roller 17 is stopped by the sensor 25a to bring the traveler 7 to a predetermined position. Then, the stopper 25 returns to the retracted position, the operation portion 11 moves to the left in the drawing by the pitch P, and the traveler removal device 22 and the traveler insertion device 23 face the traveler 7 at the predetermined position as shown in the figure. Becomes Then, the traveler removing device 22 advances and enters the state of FIG. 10B with respect to the traveler 7 which is in the predetermined position, and the traveler 7 is locked by the lateral movement of the traveler removing device 22. In addition, the roller 18 of FIG. 15 is reversely rotated a predetermined number of times to loosen the thread, and the thread shifting lever 2 of FIG.
1 is actuated and the yarn is moved to the ring 5. Then, after removing the old traveler 7, a new traveler is inserted. Then, a predetermined number of the rollers 18 are normally rotated to hang the yarn on the new traveler 7. In this way, the traveler 7 can be brought into a predetermined position by the controlled forward or reverse rotation of the rollers 17 and 18 and the stopper 25 without using a tensor, and the traveler removing device 22 can be operated. However, the tensor stores the yarn with a margin and does not require strict rotation control when the bobbin is rotated in the reverse or forward direction, but the operation procedure becomes complicated. Also, since the tension during the thread pulling operation can be appropriately maintained,
It enables a reliable thread shifting operation. However, when the bobbin is rotated in the reverse or forward direction without using the tensor, the thread may be broken unless the rotation is strictly controlled by using a thread tension sensor. Thus, it is preferable to use a tensor.

[0032]

The traveler exchanging machine of the present invention is a traveler exchanging machine having a thread shifting lever, a traveler removing device, and a traveler inserting / placing device. If the tensor absorbs the looseness of the yarn in advance, the yarn pulling lever operates while feeding the yarn from the tensor, so there is no need to rotate the bobbin in conjunction with the yarn pulling lever.
The thread shifting lever operates smoothly.

[Brief description of drawings]

FIG. 1 is a front view of an operation unit of a traveler exchange.

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

FIG. 3 is a diagram showing an entire traveler exchange.

FIG. 4 is a diagram showing another embodiment of the wheels of the operation unit.

FIG. 5 is a diagram showing another embodiment of the wheels of the operation unit.

FIG. 6 is a diagram showing another embodiment of the truck unit of the traveler exchange.

FIG. 7 is a view showing another embodiment of the positioning mechanism.

FIG. 8 is a perspective view showing the structure and operation of the tensor.

FIG. 9 is a view showing the structure and operation of the thread pulling lever.

FIG. 10 is a view showing the structure and operation of the traveler removing device.

FIG. 11 is a view showing the structure and operation of the traveler insertion device.

FIG. 12 is a diagram showing the structure and operation of a thread tension sensor.

FIG. 13 is a view showing a thread hooked state on a traveler.

FIG. 14 is a diagram showing a state where a thread is hooked on another traveler.

FIG. 15 is a top view of an operation portion of another traveler exchange.

FIG. 16 is a front view of the ring spinning machine.

[Explanation of symbols]

 20 Tensioner 21 Thread Pull Lever 23 Traveler Removal Device 24 Traveler Insertion Device

Claims (1)

[Claims] 1. A traveler exchanging machine having a yarn pulling lever, a traveler removing device, and a traveler inserting device, wherein the traveler exchanging device is provided with a tensor for absorbing yarn slack for the yarn pulling lever.