JPH07216632A - Apparatus for taking up and housing tow and method for taking up the same tow - Google Patents

Abstract

PURPOSE:To provide a apparatus for taking up and housing tow, provided with a yarn ending device capable of automatically and surely ending a fiber in which yarn breakage occurs in spinning a synthetic fiber, etc., and to provide a method for taking up the tow. CONSTITUTION:This apparatus for taking up and housing tow has a yarn ending device 7 having protruded curved contact face with a tow traveling main line 14. The yarn ending device 7 is capable of moving from a waiting position C to a yarn ending position D and has a yarn breaking device for cutting a fiber recovered at the yarn ending position. The apparatus is also provided with a housing device. The method for taking up tow is carried out by using the taking-up and housing apparatus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tow collecting and storing device and a tow collecting method. More specifically, the present invention relates to a tow take-up and storage device and a take-up method, which incorporates a yarn splicer for splicing fibers to be spliced, when continuously taking out fibers, particularly spun synthetic fibers.

[0002]

2. Description of the Related Art In melt spinning of general-purpose synthetic fibers such as polyester and polypropylene, a polymer is discharged from a plurality of spinnerets to form a large number of fiber bundles (tows) which are rotated at a high speed. It is generally stored in a storage container such as a can. However, when spinning,
A fiber spun from one spinneret may cause thread breakage due to clogging of a spinning hole or uneven viscosity of a polymer. Conventionally, in this yarn splicing, a method in which a person manually splices the yarn to be spliced into a traveling tow, cuts with scissors, and joins the traveling tow. However, this yarn splicing work is easy to fail,
As a result, other normally spun fibers are also involved, and other take-up rolls may be stopped or the entire take-up and storage device may be stopped. Further, since this work is performed in accordance with the tow traveling at a high speed, the skill of the worker is used, and there is a problem that a disaster such as scissors is likely to occur.

In Japanese Patent Laid-Open No. 52-91909, an air-suction type yarn suction device is provided at a position below the tow yarn path,
An air-suction type yarn mixing device is disclosed in which the yarn to be spliced is sucked by the yarn suction device, moved in the left-right direction, and cut and combined by a cutter. In the product provided with the air-suction type yarn joining device, it is necessary to apply a large amount of high-pressure air at all times from the start of yarn joining to the end of yarn joining, and inevitably a large air compressor or the like. Is necessary and not economical. In addition, when the yarn is spliced, the suction device is placed on the rail and moved in the left-right direction, so that the yarn waste easily wraps around the wheels, the rail, etc., which may hinder the smooth movement. Further, since the fiber at the time of starting the yarn splicing is manually taken by a human, the total fineness may be extremely large or a yarn having a large fineness and fusion between fibers may pass as compared with the normal spinning. At this time, the holes for suctioning are clogged with fibers, and the splicing is likely to fail. Therefore, there is a problem in that fibers are clogged in the suction holes, and the yarn splicing is likely to fail. Since such a yarn suction device uses a dynamic pressure of air, it has a limited suction force and cannot be used when the toe has a large denier. About 3 with the suction device
It is said that 10,000 to 40,000 denier is the upper limit, and there is a problem that it cannot be applied to tows with high productivity and large total fineness in recent years.

Japanese Patent Laid-Open No. 60-157465 discloses a thread-shaped passage tube in which a tow passes through an upper tube of a substantially T-shaped pipe and jets compressed air from a lower portion of the tube to entangle threads to be joined to the tow. Discloses a yarn splicing device provided in the yarn path. However, since this device is fixed to the main line of the tow, this yarn splicer hinders workability when performing the take-up and storing operation of the yarn. Especially within several hours after the start of spinning, the spinnability is not stable and many yarn breakages occur, and the yarn breakage is caught in the yarn splicer, and the yarns of all the spinnerets are formed. It leads to the situation of triggering a break. Further, it is necessary to provide a yarn cutting device at a place different from the yarn joining device.

[0005]

That is, an object of the present invention is to collect and store a tow capable of reliably, promptly and automatically splicing a tow having a thread cut and continuously storing the tow. To provide. Another object of the present invention is to provide a tow take-up and storage device and a tow take-up method capable of coping with yarn splicing of a tow having a large total denier.

[0006]

Means for Solving the Problems The inventors of the present invention have found that the initial purpose can be achieved by adopting the following constitution as a result of earnest researches for solving the above problems, and It came to completion. That is, the structure of the present invention is as follows. 1; A yarn splicer (7) having a convex curved contact surface with the tow running main line
And a yarn cutting device (18) that can move the yarn splicer (7) from the standby position (C) to the yarn splicing position (D) and cuts the fibers collected at the yarn splicing position (D). And a storage device (3) for storing and storing the tow, wherein the contact surface with the tow running main line is a semi-lunar convex curve,
There is a concave thread path (25), and the bottom (2
An upper element (20) having a gas ejection hole (29) in 7),
A tow take-up and storage device as described above comprising a lower element (22) having a thread cutting device (18) therein and a storage device (3), 3; a presser guide (6) before and after the yarn splicer (7). 11) and a moisturizer (16) on the tow supply side of the yarn splicing position (D) between the take-up rolls (10) and / or the take-up roll.
The tow take-up / storing device described above, in which there is a separation guide (13) for separating the fibers from the main line of the tow between the reel (10) and the yarn splicer (7), 4; (11), humidifier (1
6), any or all of the separation guides (13) is on the far side of the tow running main line, and is the tow take-up / storing device described above that is pushed out to the near side during yarn joining, 5; (9) is once collected by the collecting device (15), and the yarn path takes the route of the take-up roll (10) and the collecting device (15). B) The yarn splicer (7) at the standby position (C). Take the route of the take-up roll (10), the standby position (C), and the collection device (15) on the yarn path (36). C) Move the yarn splicer (7) close to the tow running main line. , The fiber contacts the tow running main line, d) the yarn splicer (7) is moved to the yarn splicing position (D), and the tow running main line and the fiber are strong at the convex curved contact surface of the yarn splicing unit (7). It is pushed and entangled, and the yarn path takes the route of the take-up roll (10), the yarn splicing position (D), and the collecting device (15). E) The fiber is cut by the yarn cutting device (18), Is C) Take the route of the take-up roll (10), the yarn splicing position (D), and the storage device (3) by being entangled with the traveling main line. F) Return the yarn splicer (7) to the standby position (C). Collection method.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an overall schematic perspective view of an apparatus to which an embodiment of the present invention is applied. In FIG. 1, the tow take-up and storage device of the present invention comprises a take-up device (1), a guide roll device (2), and a storage device (3) arranged in this order. The fibers (9) spun from the plurality of spinnerets (8) are collected by a take-up roll.
The tow (a large number of fiber bundles; 14) is taken up by the roll (10) and passes through a guide roll device (2) equipped with a plurality of guide rolls (12) to a can () of the storage device (3). It is transferred and stored in 5). Usually, the fineness of the fiber (9) spun from one spinneret (8) is several hundred to tens of thousands of denier, and the total fineness of the tow transferred to the can is several thousand to several hundreds of thousands of denier. It is Le. The spinning speed, that is, the take-up roll speed is about 300 to 8
000 m / min.

The take-up device (1) comprises a plurality of take-up rolls (10), a recovery device (15), and a yarn splicer (7). The yarn splicer (7) is located between the take-up roll (10) and the storage device (3) and is in steady operation (standby).
At the standby position (C) away from the tow running main line (14), the yarn can be moved to the yarn splicing position (D) during yarn splicing. The recovery device (15) is located away from the tow running main line. In addition, the take-up device is provided between the take-up roll (10) and the yarn splicer (7).
There is a rod-shaped separation guide (13) for separating the fibers. If the separation guide (13) is provided, especially when the distance between the take-up roll (10) and the yarn splicer (7) is long, the tow road of the tow traveling main line and the yarn splice (7) at the standby position (C) are provided. It is difficult to pull in even if the angle with the yarn path (36) is small. Recovery device of the present invention (1
Item 5) is for temporarily collecting the yarn at the time of starting the tow storage work or splicing the yarn. The recovery device (15) is
Easy to handle. This recovery device (15)
Does not need to be provided for each take-up roll, but may be provided for every 2-5 take-up rolls. Further, instead of the roll, other material such as a take-up roll equipped with a traverse may be used, or a hand-held suction-type material may be used. (Figure 1).

FIG. 2 is a schematic front view of the yarn splicer (7) provided in the take-up device, and FIG. 3 is a schematic side view thereof.
FIG. 4 is a schematic plan view of the take-up device. Thread splicer (7)
Is an upper element (2 with a convex curved contact surface with the tow running main line).
0) and the lower element (22) accommodating the thread cutting device are mainly fixed (FIG. 2). The yarn splicer is on the back side of the panel (17) during standby, and is connected to a rack jack (32) for moving the rack up and down and a motor (33) for operating the rack jack (FIG. 4).

The contact surface of the yarn splicer (7) of the present invention with the tow running main line is convexly curved, and has a semi-lunar convex curved shape having a concave yarn path (25), a rod shape, a roll shape, or a concave yarn path. It may have a convex curved shape. In the half-moon convex curve, there is a concave yarn path (25) formed between both protrusions (28), and a plurality of gas ejection holes (29) form the upper element at the bottom of the yarn path. Further, the upper element has a gas dispersion chamber (30) having a large number of pores therein, and a compressed air having a pressure of about 1 to 6 kg / cm ² is connected to the chamber (30) via an air-pipe (34). Has been done. The ejection of the compressed air is performed by operating the solenoid valve (19). The gas ejection holes (29) have a circular cross section and are nine at regular intervals (FIG. 2). The holes have a diameter of about 0.5-20.
mm is enough. Of course, the shape of the hole may be an ellipse, a rectangle, or the like. Since the contact surface of the yarn splicer (7) with the tow running main line is curved, the guide function of the fiber to be spliced,
It has a push-up contact function and a linear entanglement function. By injecting gas from a plurality of holes, there is an entanglement function at a plurality of parts, that is, an entanglement function of filaments. Further, since the ease of yarn splicing varies depending on the fineness of the single yarn to be applied, the water content of the tow, the strength of friction between fibers, etc., the gas ejection hole (29) may be omitted.

The lower element (22) of the yarn splicer is equipped with a yarn cutting device (18) inside. There is a vertically long and slender yarn path (26) in the front part thereof, and four guide plates (21) on the left, right, upper and lower sides of the yarn path, and a lower front guide (23) and a lower rear guide (24) are located below the guide plates Yes (Figs. 2 and 3). The thread path at this time is a concave thread path (25) and a vertically elongated thread path (2
6), the lower front guide (23) and the lower rear guide (24) to reach the recovery device (15). The cutting device (18)
It may be performed outside the yarn splicer (7), but it is more compact to have it inside. As the yarn cutting device (18), a scissor-type object that operates in compressed air, a heat-ray melting type object, or the like can be used. In this example, the scissors-type object is provided. The cutter is arranged such that its two blades straddle the elongated yarn path (26) (FIG. 3), and the yarn cutter (18) is operated to pass the yarn paths (26) in front and back. You can cut the fibers.

[0012] The separation guide provided in the take-up device is located at a position on the far side of the tow traveling main line during steady operation, and can be pushed and separated to a position (E) at the front side of the tow traveling main line during yarn splicing. Is connected to the air cylinder (31). This separation guide is a vertically long rod-shaped object,
The position of the upper end is arranged at a position lower than the height of the main line. This guide (13) can be separated from the upper end of the guide before the fibers to be spliced at the time of splicing up to the splicing position (D), and can join the tow running on the main line. Further, this guide may be of a fixed type or of various shapes through which the yarn passes (FIGS. 4 and 1). In addition to the above positions, one or more separation guides (13) may be provided at a position between the take-up rolls (10). To

The humidifier (16) is retracted to the back side of the tow running main line during steady operation, and is pushed out by the air cylinder (31) to the position (F) at the upper part of the yarn path of the front tow main line when the yarn is spliced. At the same time, a wetting liquid such as water is sprayed. Specific examples thereof include a liquid spray type and a liquid dropping type. In this example, a liquid spray type is used,
It is connected to a water tank (35) and compressed air. Water, oil, etc. can be used as the tow wetting liquid (Figs. 4 and 1).

Further, a pressing guide (1
In 1), during steady operation, the toe running main line is retracted to the rear side, and when the yarn is spliced, the air-cylinder (31) pushes it to a position above the tow main line. Of course, this guide is used for the take-up roll (1
0), the yarn splicing device (7), and the guide roll (12), they may not be provided, and they may be rod-shaped or roll-shaped (FIGS. 4 and 1).

A guide roller provided in the device of the present invention.
The guide device (2) is provided with six guide rolls. By adjusting the speed of the roll, the tension of the running tow is adjusted, at the same time, the disorder of the fiber single yarn is eliminated, and the tow focusing property is improved. However, the device may be omitted.

Further, the storage device (3) provided in the device of the present invention has a pair of transfer rolls (4) and transfer assist rolls (6). In addition, there is a storage can (5) below it. The transfer assisting roll is used to temporarily wind the tow around the roll during the tow take-up and storing work start (FIG. 1). Further, the storage device may be a thing without a transfer roll and provided with a rotating body which can be wound around a bobbin or the like, or an air-suction type thing.

Hard materials such as stainless steel and ceramics are used for the bottoms (27) of the concave yarn path of the guides and the yarn splicer and the projections (28) thereof used in the device of the present invention. ing. Further, the apparatus of the present invention mainly includes an operation-related control system for controlling the operation of the air cylinder, the compressed air injection of the yarn splicer, the water spray and the like, and the take-up roll, the recovery device and the transfer roll. A speed-related control system for controlling the rotation speed and the like, and a control system for the positional relationship, operation sequence relationship, time relationship, etc. of individual devices are incorporated. Further, part of the control system may be incorporated in the sequence control or the microcomputer. Further, some of them may be manually performed.

[0018]

Next, the operation of the present invention will be specifically described according to an example based on the drawings of the present invention. Spinneret (9)
When a yarn breakage occurs in the sensor, a sensor (not shown) detects the yarn breakage, and the air cylinder (31) operates to push the separation guide (13) to the front position (E). The fiber (9) having the yarn breakage is once wound around the collecting device (15), and the yarn is hooked on the yarn splicer (7) at the standby position (C). At this time, the yarn path (36) at the time of yarn joining takes the route of the take-up roll (10), the standby position (C), and the collecting device (15) (FIG. 1).

The moisturizer (16) and the presser guide (11) are pushed out by the operation of the air cylinder.
The valve connected to this moisturizer opens and water is sprayed to moisten the tow (14). Before the yarn splice (7) rises and the yarn splice reaches the yarn splice position (D), the fibers separate from the separation guide (13) and become the same as the yarn path of the tow traveling main line and come into contact with the tow. . When the compressed air is ejected, the electromagnetic valve of the compressed air connected to the upper element (20) of the yarn splicer is opened immediately before reaching the yarn splicing position (D), and the compressed air is ejected from the gas ejection hole (29). Furthermore, the yarn splicer (7) rises and the yarn path becomes
Take-up roll (10), yarn splicing position (D), recovery device (1
The path of 5) is taken, and at the yarn splicing position (D), the fibers and the tow are entangled by the gas flow ejected from the bottom of the tow while being pressed by the presser guide (11) and the yarn splicer (7). In this state, the compressed air solenoid valve (19) connected to the yarn cutting device is actuated to cut the fiber, and the fiber which was heading for the collecting device (15) is directed to the guide roll (12) and is fed into the transfer roll. After passing through the le (4), it is stored in the can (5) (FIG. 1).

In the yarn splicing device, the bottom portion (27) of the concave yarn passage that also serves as the yarn passage is curved in a semi-lunar convex shape, and gas is discharged from the plurality of gas ejection holes (29) formed in the bottom portion. Since it jets out, the fibers and the tow main line are subjected to entanglement treatment at a plurality of points. Moreover, the tow main line is moistened with liquid such as water or oil. Therefore, the entanglement of the fibers to be spliced becomes sufficient, and the splicing does not fail (FIG. 2).

After the yarn splicing is completed, the compressed air and water spray of the yarn splicer, the wetting device, etc. are stopped, and the yarn splicing device, the wetting device, the guides, etc. are returned to the positions during steady operation. After that, the collection device (15) is stopped, and the wound waste thread is cut and removed with a cutter. At this point, all the work of collecting and storing the tow is completed.

[0022]

The first effect of the present invention is that, when a yarn breakage occurs in a specific spinning spindle (spinneret) during spinning, the yarn splicer causes the fibers and tows to be spliced into a linear shape with a large number of jet flows. Since the yarn is entangled with each other, the yarn can be reliably and automatically spliced, and the generation of waste yarn due to a splicing error can be reduced. A second effect of the present invention is that guides, a moisturizer, etc. for assisting yarn splicing are retracted to the back side of the tow traveling main line or the back side of the panel during steady operation, and the front side is provided only during yarn splicing. Will appear in
These guides were able to work safely without hindering workability during spinning and take-up / storing work. Further, the yarn waste is not caught on the guides, and the yarn winding or the tow winding due to the yarn waste is not induced. The third effect of the present invention is that since water or the like is sprayed from the moisturizer to the tow only at the time of yarn splicing, the moisture improves the tow converging property and the yarn splicing can be performed more reliably. Even with tens of thousands of total denier thick tows, splicing was possible without problems.

[0023]

[Brief description of drawings]

FIG. 1 is an overall schematic diagram of an apparatus to which an embodiment of the present invention is applied.

FIG. 2 is a schematic front view of the yarn splicer.

FIG. 3 is a schematic side view of the yarn splicer.

FIG. 4 is a schematic plan view of a take-up device.

[0024]

[Explanation of symbols]

 1, take-up device 2, guide roll device 3, storage device 4, transfer roll 5, can 6, transfer auxiliary roll 7, yarn splicer 8, spinneret 9, fiber 10, take-up roll 11 , Presser guide 12, guide roll 13, separation guide 14, tow running main line 15, recovery device 16, wetting device 17, panel 18, thread cutting device 19, valve 20, upper element 21, guide plate 22, lower element 23 , Front lower guide 24, rear lower guide 25, concave yarn path 26, elongated yarn path 27, concave yarn path bottom 28, protrusion 29, gas ejection hole 30, gas dispersion chamber 31, air cylinder 32, Rack jack 33, motor 34, air piping 35, water tank 36, yarn path A during yarn joining, position A B, position B C, standby position C D, yarn joining position D E, position E F, position F

Claims (5)

[Claims] 1. A yarn splicer (7) having a convex curved contact surface with a tow running main line, the yarn splicer (7) being movable from a standby position (C) to a yarn splicing position (D). A tow take-up and storage device having a yarn cutting device (18) for cutting the fibers collected at the yarn splicing position (D) and including a storage device (3). 2. The contact surface with the tow running main line has a semicircular convex curved shape and has a concave yarn path (25), and a gas ejection hole (29) is provided at the bottom portion (27) of the concave yarn path. Upper element (2
0) and the lower element (2) with the thread cutter (18) inside.
The tow take-up and storage device according to claim 1, further comprising a storage device (2) and a storage device (3). 3. A presser guide (1) is provided before and after the yarn splicer (7).
1), and the wetting device (1
6) with separating guides (13) separating the fibers from the tow running line between each take-up roll (10) or between the take-up roll (10) and the yarn splice (7). The tow take-up and storage device according to claim 1 or 2. 4. In steady operation, any or all of the presser guide (11), the moisturizer (16), and the separation guide (13) are on the far side of the tow running main line, and are pushed out to the front side when the yarn is spliced. The tow storage device according to item (3). 5. The fiber (9), which has broken the yarn, is once collected by the collecting device (15), and the yarn path takes the route of the take-up roll (10) and the collecting device (15). B) Standby position The fiber is hung on the yarn splicer (7) in (C), and the yarn path (36) is taken up by the take-up roll (1).
0), standby position (C), collecting device (15) route, c) yarn splicer (7) is brought close to the tow traveling main line, and fibers come into contact with the tow traveling main line, d) yarn splicing ( 7) is moved to the yarn splicing position (D), the tow running main line and the fibers are strongly pressed and entangled by the convex curved contact surface of the yarn splicer (7), and the yarn path is the take-up roll (10). , Yarn splicing position (D), recovery device (15)
E) The fiber is cut by the yarn cutting device (18), the yarn path is entangled with the tow running main line, and the take-up roll (10), the yarn splicing position (D), and the storage device (3) Take a route, and f) A method of pulling the tow that returns the yarn splicer (7) to the standby position (C).