JPH0625926A - Traveler exchanger - Google Patents

Abstract

PURPOSE:To provide a traveler exchanger capable of minimizing the inclination of a traveler with an upper thread to enable the sure hooking of the traveler with the claw of a traveler-removal apparatus. CONSTITUTION:The traveler exchanger is provided with a traveler removal apparatus 22 having a claw 73 protrusible relative to a traveler 7 to be inserted into a ring 5 of a ring spinning frame. The claw 73 is positioned above the ring 5 and the traveler 7 traveling together with an upper thread Y1 is hooked with the claw. The middle part of the upper thread Y1 is pressed with a thread- pressing lever 81 to minimize the inclination of the traveler 7 caused by the upper thread Y1.

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. The ring spinning machine 101 has a twisting mechanism 102 and a drafting mechanism 103. The draft mechanism 103 includes a back roller 104 and 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 thread S becomes a thread through the draft mechanism 103. This yarn is spun through a twisting mechanism 102 described below. The twisting mechanism 102 includes a spindle shaft 1 into which the bobbin 2 is inserted, a ring rail 4 that is vertically movable and traversable along the longitudinal direction of the bobbin 2, and a ring 5 fixed to the ring rail 4. A traveler 7, which is attached to the flange 6 of the ring 5 and is free to 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 is a belt 3 common to a plurality of weights and normally rotates at a high speed of about 10,000 to 20,000 RPM. The yarn Y is wound on 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 frictional resistance body for producing a difference in the number of revolutions, and at the same time, a traveling direction changing mechanism for changing the twisting action into the winding action.

The traveler 7 is a small metal fitting having a total length of 5 mm and a width of less than 1 mm, which is usually C-shaped or clamp-shaped, 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. Conventionally, this traveler exchange has been manually performed, and automation by a traveler exchange has been desired.

[0004]

When performing automatic exchange using a traveler exchange, the pawl of the traveler removing device is arranged in front of the traveling traveler, the traveler is hooked with the pawl, and then the traveler removing device is driven. , I will remove the old traveler and insert a new traveler. However, since the traveler catches the upper part of the upstream side with the upper thread on the rear side and runs forward leaning,
There is a problem that the gap between the front side ring is closed and the traveler cannot be surely caught by the claw.

The present invention has been made in view of the above problems, and an object of the present invention is to make the inclination angle of the traveler's upper thread as small as possible so that the pawls of the traveler removing device can be reliably moved to the traveler. It intends to provide a traveler exchange that gets caught.

[0006]

In order to achieve the above object, a traveler exchange of the present invention comprises a traveler removing device having a pawl capable of advancing and retracting with respect to a traveler inserted into a ring of a ring spinning machine. A traveler exchanging machine for hooking a traveler, which travels together with an upper thread, with the claw positioned on a ring, wherein a thread restraining lever for bending a thread upstream of the traveler is provided.

[0007]

[Operation] By suppressing the thread upstream of the traveler with the thread presser lever, the angle of the upper thread reaching the traveler is made small, and the inclination angle of the traveler traveling forward leaning is made small so that the front of the traveler and the ring are Make sure that the gap in is not blocked by the inclination.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a main part of a traveler exchange of the present invention, FIG. 2 is a top view thereof, FIG. 3 is a side view thereof, 7 is a traveler, 22 is a traveler removing device, 81 is a thread holding lever, and 73 is It is a claw of the traveler removing device 22.

First, referring to FIG. 1, the structure and movement of the thread restraining lever 81 and the pawl 73 at the tip of the traveler removing device 22 will be described. The thread restraining lever 81 is movable back and forth with respect to the ring 5 and is normally retracted by the drive device 82 thereof, but when the traveler 7 is hooked on the pawl 73, the needle thread Y1
And the upper thread Y1 is regulated. On the other hand, the pawl 73 of the traveler removing device 22 is provided with the thread holding lever 81.
Although it is normally retracted with respect to the flange 6 of the ring 5, when the thread restraining lever 81 advances, a proper distance, which will be described later, is opened from the thread restraining lever 81 in the direction of the arrow to move the ring 5 above the ring 5. To advance to.

Next, the operation of the above-mentioned thread restraining lever 81 will be described. The traveler 7 is pulled by the lower thread Y2 wound around the bobbin 2 on the downstream side of the traveler 7. Then, the traveler is favorably caught by the upper yarn Y1 on the upstream side of the traveler 7, and the traveler travels on the ring 5 in the arrow direction in the same direction as the bobbin 2 depending on the rotation of the bobbin 2. Next, while rotating the bobbin 2, when the thread restraining lever 81 is advanced to the predetermined position shown in the figure, the upper thread Y1 is wound around the bobbin 2 from the thread restraining lever 81 along the two-dot chain line path.
The traveler 7 moves from the position A to the position B in the direction of the arrow, and then stops. Therefore, the pawl 73 is attached to the ring 5 so that the traveler 7 is caught at the position B just before the stationary.
Advance to the top beforehand.

Further, the thread restraining lever 8 which operates as described above
1 and changes in the state of the traveler 7 due to the change 1 will be described in detail with reference to FIG. In a normal traveling state in which the traveler 7 travels in the direction of the arrow, the traveler 7 looks like the A position.
Since the needle thread Y1 catches the rear part and leans forward, the gap between the traveler 5 and the ring 5 is blocked by a small amount of ε1 in front of the traveler 7, and the claw is unlikely to be caught. Therefore, when the thread restraining lever 81 is advanced in the middle of the upper thread Y1 and the angle of the upper thread Y1 reaching the traveler 7 is regulated to be gentle, the traveler 7 causes the thread restraining lever 81 to restrain the upper thread Y1. From the position A at the point in time, it advances further by a distance L in the direction of the arrow and is caught by the claw 73 and stopped. At this time, the angle at which the needle thread Y1 reaches the traveler 7 is gradual as shown by the chain double-dashed line, and the gap with the ring 5 becomes large as ε2 in front of the traveler 7, so that the pawl 73 can easily and surely travel. Get stuck in 7. If the thread restraining lever 81 is not provided, the needle thread Y1 'catches up the traveler 7 as indicated by the one-dot chain line, so that the gap ε2 does not greatly expand as shown in FIG. 3 and is less likely to be caught by the traveler 7. In this way, when the traveler removing device 22 is arranged so that the needle thread Y1 is regulated by the thread pressing lever 81 and the traveler 7 is naturally caught by the pawl 73 at the position B immediately before stopping, the gap ε2 is maximized. , Surely get caught on the traveler 7. It should be noted that if the position where the thread restraining lever 81 advances is too high, the clearance ε2 of the traveler 7 will not be sufficiently large, and if it is too low, the traveling distance L of the traveler 7 will be too short and the pawl 73 will not catch on the traveler 7. Therefore, the height of the thread holding lever 81 is set to an appropriate height in consideration of balance.

Next, the whole traveler exchanging machine equipped with the above-mentioned thread restraining lever 81 will be described with reference to FIG. The traveler exchange has a structure in which the operation unit 11 is installed on a dolly unit (not shown), and is freely movable along a ring rail or the like by rollers 50 or the like. The operation unit 11 includes a first operation unit 11a having a traveler exchanging function by the traveler removing device 22 and the yarn holding lever 81 of the present invention, a second operation unit 11b having a yarn holding device 17, and rotation of the bobbin 2. It comprises a third operation portion 11c having a roller 18 for controlling. In particular, the traveler exchanging function of the first operating portion 11a includes the thread shifting lever 21 and the traveler removing device 2
2. It consists of the traveler insertion device 23 and the thread restraining lever 81, and is normally withdrawn, but in conjunction with each other, it advances individually to remove the old traveler and replace it with a new traveler.

As shown in FIG. 5, for example, the traveler removing device 22 includes a guide rod 71, a coil spring 72, and a driving means 74 capable of rotating them in the a direction, advancing in the b direction, and raising in the c direction. It has a simple structure including a large-diameter rod 76 to be connected. The guide rod 71 is integrally provided at the tip of a large diameter rod 76 connected to the driving means 74, a coil spring 72 is wound around the guide rod 71 with an appropriate gap 75, and the end 72a thereof is large. It is fixed to the diameter rod 76. This coil spring 7
The tip of No. 2 is a thin and pointed claw 73, and the tip of the claw 73 extends radially outward by a distance ε1. By hooking the old traveler 7 on the claw 73, rotating the coil spring 72 in the a direction, advancing it in the b direction, and raising it in the c direction, the traveler 7 is removed and the traveler 7 is held.

The thread pulling lever 21 is moved to the position shown in FIG. 6 after the thread pressing lever 81 and the claw 73 of the traveler removing device 22 have advanced and the traveler 7 has been caught by the claw 73 and the thread pressing lever 81 has retracted. , Advance. The yarn pulling lever 21 includes a pair of levers 33 and 34,
Hook portions 33a and 34a are formed at the tips. With respect to the yarn Y1 above the traveler 7, the hook portion 33b of the lever 34 hooks the yarn from the upper side to the lower side and the ring 5
Move to position C on the outer circumference. Thread Y below Traveler 7
For 2, the hook 33a of the lever 33 temporarily lowers and hooks the thread Y2, and moves to the position A on the inner circumference of the ring 5. As a result, the yarn Y is held at a position along the ring 5 that does not hinder the removal and insertion of the traveler 7. Therefore, first, a new traveler 7'is inserted by the traveler inserting device, and then the old traveler 7 is removed by the traveler removing device. In this way, if the old traveler is removed after the traveler has been attached by the traveler inserting device, the thread will be attached to the traveler to be removed and the thread will be removed without being inserted into the new traveler, It is convenient because it will not be disconnected.

Next, referring to FIG. 4, the overall procedure of the traveler exchange by the above-mentioned traveler exchange will be described. When the operation unit 11 moves to the side of the ring spinning machine for exchanging an old traveler, first, the wheels 50 of the first operation unit 11a rotate with respect to the ring 5, and the positioning plate 16 advances to move the ring 5 Then, the entire operation portion 11 is positioned. Next, the yarn holding device 17 of the second operating portion 11b advances into the yarn path between the snell wire 8 and the front roller 107, the hooking portion 61 hooks the yarn Y and rotates, and the twist once wound on the bobbin 2 is added. The wound yarn Y is rewound and a predetermined amount of yarn is stored and held. Further, the lever 19 of the third operating portion 11c is lifted to operate the knee brake 1a to stop the rotation of the spindle shaft 1 and the bobbin 2. However, this acts on the ring spinning machine in which the operating portion 11 is lying sideways, and the spindle shafts of the other ring spinning machines remain rotating at high speed.

In the above-mentioned state, the start of the traveler exchange is started. First, the thread restraining lever 81 and the traveler removing device 22 described above are advanced to predetermined positions, and then the roller 18 of the third operating portion 11c is controlled to move the bobbin 2
When is slowly rotated, the yarn Y stored in the yarn holding device 17 of the second operating portion 11b is unwound, and the yarn Y is wound around the bobbin 2 again, so that the traveler 7 follows the ring 5 along with it. To run. As shown in FIG. 3, since the upper thread Y1 is restricted by the thread pressing lever 81, the upper thread Y1
The angle to the traveler 7 of No. 1 becomes small, the gap with the ring 5 in front of the traveler 7 is not closed, and the traveler 7 is reliably caught by the claw 73 of the traveler removing device 22 and stopped. Therefore, stop the rotation of the bobbin 2 in FIG.
The yarn pressing lever 81 is retracted and the yarn pulling lever 21 is advanced. Then, the yarn pulling lever 21 further pushes the yarn accumulated in the yarn holding device 17 and presses the yarn Y so as to contact the ring 5 as shown in FIG. In this state, first, the traveler inserting device 23 is advanced, a new traveler 7'is inserted, and then the traveler inserting device 23 and the traveler removing device 22 are withdrawn, and the thread shifting lever 21 is withdrawn. After the traveler exchange is completed in this way, the yarn holding device 17 of FIG. 4 is driven to store the slack of the yarn again in the yarn holding device 17, and the hooking member 61 stretches the yarn Y between the front rollers 107. The yarn accumulated in is carried and the yarn is spliced. At the same time as this piecing,
The lever 19 releases the knee brake 1a, the spindle shaft 1 rotates, and normal operation is restored without yarn breakage.

[0017]

In the traveler exchanger of the present invention, the upper thread on the upstream side of the traveler is regulated by the thread restraining lever to reduce the angle at which the upper thread reaches the traveler, and the inclination of the traveler traveling while leaning forward. The angle is made smaller so that the gap between the front of the traveler and the ring is not blocked more than necessary.The claws of the traveler removal device are easy to catch on the traveler and are surely caught, so the failure to remove the traveler is reduced, Suitable for automation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a traveler exchange of the present invention.

FIG. 2 is a top view showing a main part of the traveler exchange of the present invention.

FIG. 3 is a side view showing a main part of a traveler exchange of the present invention.

FIG. 4 is a side view of the entire traveler exchange.

FIG. 5 is a view showing a main part of a traveler removing device.

FIG. 6 is an operation diagram of a yarn pulling lever.

FIG. 7 is a side view of the ring spinning machine.

[Explanation of symbols]

 5 Ring 7 Traveler 22 Traveler removal device 73 Claw 81 Thread retainer lever

Claims (1)

[Claims] 1. A traveler removing device having a pawl capable of advancing and retreating with respect to a traveler inserted into a ring of a ring spinning machine, wherein the pawl is positioned on the ring and a traveler traveling with a needle thread is hooked on the pawl. A traveler exchange, wherein a traveler is provided with a thread restraining lever for bending a thread upstream of the traveler.