JPS6030628B2 - Yarn take-up device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a taking-off device for yarns, particularly for continuously running yarns.

Generally, when manufacturing synthetic fiber tow or staple fiber wire, the spinning speed and drawing speed differ by an order of magnitude, so yarns woven from dozens of spindles are concentrated into a single yarn. Also, it is temporarily stored in T-cans.

Conventionally, when storing the yarn east in a can, a method has been put into practical use in which the yarn east is dropped directly below it by a galley and is stored in a can that is reciprocating below the gear wheel.

However, due to advances in technology, the paper yarn speed of synthetic fibers has increased year by year, and today it exceeds 1580 threads per minute (
In particular, it has become possible to weave threads with a thread count of 2,500 to 5,000.

However, in the case of such high speeds, the above-mentioned method of stripping using the gally reel could no longer follow the traveling speed of the yarn. Recently, attention has been paid to a method suitable for storing a high-speed Itojo East in a can while making the Itojo East take a coiled trajectory. For example, as a collection device for dropping while keeping a certain trajectory,
A takeover device described in Japanese Patent No. 1-133537 is known.

However, the above-mentioned take-up bag layer is suctioned by a fluid ejector, and the taken-up yarn bundle is sent into a rotating, curved yarn guide tube.
The yarn is swung out from the rotating yarn guide tube and the yarn is collected in a coiled shape. There is a problem.

First of all, ``The first problem is that the yarn running inside the yarn guide tube gets tangled and the yarn guide tube is blocked.

This blockage phenomenon is caused by the fact that the thread tube, which has a circular cross section, is curved, causing the high-speed airflow flowing through the thread tube to swirl. This is caused by running.When a tension fluctuation wave such as a thread scale operation is transmitted to the yarn bundle running while turning inside the yarn guide tube, disturbance is added to the swirling movement of the yarn east, and the yarn bundle runs in the narrow guide tube. The filament east collides within the tube and the filament guide tube is instantly blocked.Second
The problem with this is that single yarn abrasions, commonly referred to as fuzz, occur. This occurs because the above-mentioned swirling of the high-speed airflow causes the yarn east to travel while constantly scraping the wall surface of the yarn guide tube without passing through the center of the yarn guide tube. As a result, damage to the inner wall of the thread guide tube is also significant. The third problem is that the high-speed airflow ejected from the outlet of the yarn guide tube together with the yarn east collides with the yarn east that is already falling in a coiled trajectory, disturbing the coil forming.

Generally, a fluid ejector is provided to apply tension to the yarn east so that the yarn east is not wound up by a group of rollers provided in the previous process. The ejection speed of the high-speed air flow ejected from the fluid ejector is in the subsonic range, and the speed gradually decreases as it passes through the yarn guide tube. Therefore, when the high-speed airflow ejected from the outlet of this yarn guiding tube collides with the yarn east several phases before falling while taking a coiled trajectory, the yarn This disturbs the formation of the east coil.Moreover, the high-speed airflow also causes the falling yarn east to become loose, thereby deteriorating the east gathering property of the yarn east.The present invention solves this problem. This was done in consideration of the
To provide a yarn take-off device which eliminates blockage phenomena due to entanglement of yarn (yarn east), particularly reduces yarn abrasion due to high-speed swirling flow, and eliminates disturbances in coil forming due to high-speed jet flow. It is.

That is, the present invention has a three-dimensionally curved yarn guideway that is rotatable about a vertical axis and connects a yarn inlet opening coaxial with the vertical axis and a yarn outlet opening in the circumferential direction. In a yarn take-up device that includes a coiler device and a fluid ejector that sends the yarn to the yarn introduction port, the yarn guide path is formed in a radial shape that widens toward the end, and an exhaust path for discharging fluid from the guide path is provided. It is characterized in that it is formed by branching, so that the thread and the discharged fluid are separated.

An explanation will be given below based on one embodiment shown in the drawings.

FIG. 1 is a partially sectional front view of an embodiment of the present invention;
FIG. 2 is a perspective view of the yarn guide path of the coiler head, and FIG. 3 is an explanatory diagram of the distribution of ejected gas.

In the figure, reference numeral 1 denotes a pair of gallils, between which the yarn (yarn east) Y is held and taken over. 2 is a fluid ejector installed vertically below the galley 1, and a supply port 201
The pressure fluid supplied from the V is blown out from the nozzle 203 through the annular fluid chamber 202, and the yarn is sucked by the ejector effect and sent downward together with the pressure fluid.

3 is a coiler device, which is held below the fluid ejector 2 so as to be rotatable coaxially therewith.

The coiler device 3 consists of a hollow cylindrical body 4 positioned so as to be moved by the fluid ejector 2, and a coiler head 5 attached to the hollow cylindrical body 4. The cylindrical body 4 is rotatably held on a vertical axis, and is rotationally driven by a motor (not shown) rotating a belt (not shown) that is stretched around a pulley 401 formed on the cylindrical body 4. . The coiler head 5 is cylindrical and is attached to the lower end of the cylindrical body 4.
rotates as one. Reference numeral 501 denotes a yarn guide path formed in the coiler head 5, and as shown in FIG. The yarn discharge ports 501b are arranged on the circumferential surface of the yarn in a three-dimensionally curved manner, with flat yarn discharge ports 501b that are oblique and closed in all directions around the circumference, and the overall shape is radially widened in the radial direction. The separation strip is formed by connecting the strip guides 501' and raising them in a convex shape, and the separation strip 50
2 is from the lower end of the yarn inlet 501a to the yarn outlet 501b.
It extends to the entrance of the river.

An exhaust path 503 is formed in front of the yarn guide path 501 (with respect to the rotational direction of the coiler head) via the separation band 502 . The yarn Y travels along the rear wall surface 501c of the guide path 501 (the side that is slow with respect to the rotational direction x of the coiler device 3) and is discharged.
The discharge port 501b is located below the entrance part of the surface that contacts the separation strip 502, which is on the side that advances in the rotational direction X of the coiler device 3 and is located higher than the rear falling surface 501c.
, and is curved in a convex shape so as to be sequentially retreating in the rotation direction x. (The rear wall surface 5 connected to the inlet 501a
01c reaches the rear end 0 of the discharge port 501b with a smooth curve that gradually retreats in the circumferential direction as it advances in the radial direction. ) The inner end of the exhaust passage 503 is connected to the yarn introduction port 5.
01a, and its exhaust port 503a opens on the circumferential surface of the coiler head 5 and connects to the guide path 501 via the separation strip 502.
It is connected to the discharge port 501b.

The exhaust port 503a is preferably closed at a higher position than the exhaust port 501b when viewed in the vertical direction, and the oblique angle 82 of the exhaust passage 503 with respect to the horizontal plane is smaller than the oblique angle 8 of the rear wall surface 501c of the conduit 501 that widens at the end. Then, the exhaust path 503
The bottom of the exhaust port 503a is located higher than the exhaust port 501b of the conduit. Note that the inner surface of the guide path 501, particularly the portion through which the thread passes, is subjected to surface treatment such as hard chrome plating, ceramic coating, diamond coating, etc., as necessary, to improve wear resistance. Further, in the above-mentioned embodiment, the yarn guiding path and the exhaust path were separated by providing a separation band in the center, and the guiding path and the exhaust path were made to move at the upper part of the separation band. In this case, it is easy to branch the exhaust passage, but in some cases, instead of branching with a separation zone, separate (completely separated) divergent yarn guides from the lower end of the vertical yarn inlet may be used. It is also possible to form an exhaust path. The yarn take-up by such a device will be explained.

It is held between gear reels 1 and 1 and is operated at high speed, e.g. 2000~
The yarn Y was sent out at a speed of 5000m/mjn,
The fluid is sucked and taken out by the fluid ejector 2 located below the gear reel 1.

The fluid pressure ejector 2 sucks the yarn by the ejector effect of the high-pressure fluid and discharges it together with the high-speed fluid, so that the yarn Y can be taken up and sent out at a high speed of 2,000 to 5,000 rpm, as described above. The yarn Y discharged from the ejector 2 passes through the vertical passage 402 of the hollow cylinder 4 that rotates at high speed in the X direction, and passes through the yarn guide path 50 in the coiler head 5.
After passing through the inlet 501a of No. 1, the running direction is sequentially changed in the radial direction, and the running direction is sequentially changed along the rear wall surface 501c to reach the outlet 501b.
From this, it is swung out in the circumferential direction and deposited and stored in the can 6 in the form of a coil as shown in FIG. The rotational speed of the coiler device 3 is determined so that the circumferential speed due to the rotational speed in the circumferential direction of the yarn Y drawn out in a coil shape and the take-up speed of the yarn, that is, the linear speed of the yarn Y, approximately cancel each other out. As a result, the yarn Y is collected in the can with almost no relative speed to the can, so even if the yarn Y is picked up at a high speed as described above, the yarn Y can be deposited in an orderly coil shape inside the can 6. In the present invention, since the thread guide path 501 has a radial shape that widens toward the end,
The yarn Y travels along the smooth curved surface of the rear arm surface 501c and is swung out, while the fluid (air) discharged from the ejector 2 flows into the exhaust path 503 at the radial direction conversion part of the vertical inlet 501a. Since the fluid is introduced and mainly exhausted from the exhaust port 503a, interference of the fluid with the yarn Y is drastically reduced. That is, as shown in FIG. 3, as the coiler head 6 rotates, the yarn Y with high inertia is swung out in a coil shape along the rear wall surface 501c of the guide path 501, but the fluid (air) with low inertia is The gas is discharged from the inlet 501a in the radial direction and mainly deviates from the inside of the exhaust path 503 to be exhausted. Since the velocity and flow rate of the fluid exhausted from the vicinity of the yarn Y are very small, interference of the fluid with the yarn Y is almost eliminated. Therefore, coupled with the fact that the yarn Y runs along the rear wall surface 501c of the wide guide path 501, there is no yarn entanglement or blockage caused by the fluid swirl flow, and the number of scratches on the yarn is drastically reduced. Since the fluid and the yarn discharge position are separated, there is no interference of the ejected flow to the yarn coil, making it possible to form a stable coil (that is, to take off the yarn).

In the above-mentioned embodiment, the fluid outlet and the thread outlet are arranged not only in the horizontal plane but also in the vertical direction (Fig. 3), so the influence of the ejected fluid is further reduced and the flow is stable. It becomes possible to take off the yarn and form a coil. Furthermore, as mentioned above, the yarn Y runs along the rear wall surface 501c of the guide path, but the exhaust path 503 branches off in connection with the guide path, and the high-speed fluid runs through it, so the yarn Y runs along the rear wall surface 501c of the guide path. It seems to be pulled by the current, and the friction between the yarn Y and the rear wall surface 501c is also reduced.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of an embodiment of the present invention;
FIG. 2 is a perspective view of the guide path and exhaust path in the coiler head, and FIG. 3 is a plan view illustrating the exhaust state of the coiler head. 2 is a fluid ejector, 3 is a coiler device, 5 is a coiler head, 501 is a yarn guide path, 502 is a separation zone, 503
is the exhaust path. Spear 3 figures O 2 figures

Claims (1)

[Scope of Claims] 1. A coiler that is rotatable about a vertical axis and has a three-dimensionally curved yarn guide path that connects a yarn inlet that is open coaxially with the vertical axis and a yarn outlet that is open in the circumferential direction. In the yarn take-up device including a fluid ejector for sending yarn to the yarn introduction port, the yarn guide path is formed in a radial shape that widens at the end, and an exhaust path for discharging fluid from the guide path is provided. 1. A yarn take-up device characterized in that the yarn is branched to separate the yarn and discharged fluid. 2. The yarn take-up device according to claim 1, wherein the exhaust path is branched by forming a convexly raised separation zone in front of the guide path.