JP2002161446A - False twister - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a false twister capable of affording a doubled yarn of good quality without deteriorating production efficiency as opposed to a conventional false twister in doubling processing. SOLUTION: Two yarns are run side by side through a first heating device 4, passed through a guide 35 and then regulated with guides 36 to change the direction from the state of running side by side to the direction at right angles to the positions. Thereby, the yarns become a state of locating and running in the front and back from the front side to the back side of an exhaust gas member 23 for each yarn. The one yarn is separated from a mounting part of a cooling unit 16 to this side at a prescribed distance between a fixed wall member 18 of the cooling unit 16 and a movable wall member 20 and the other yarn is run with a prescribed interval from the position further to this side. In short, doubling processing for each spindle (the two yarns for each spindle) can be carried out by cooling the two yarns with the one cooling unit. Thereby, production efficiency is improved as compared with that of conventional doubling processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a false twisting machine and a yarn path for a yarn traveling through the cooling device.

[0002]

2. Description of the Related Art Generally, a false twisting machine is provided with a false twisting device for twisting a yarn drawn from an original yarn package, and a yarn installed by the false twisting device upstream of the false twisting device. A heating device that relaxes or removes internal stress due to twisting that goes back along, and a cooling device that forcibly cools the set yarn in order to twist set this twisted state,
The heating device, the cooling device, the false twist device, and the like are arranged side by side in the machine base longitudinal direction.

[0003] In the cooling device, for example, Japanese Patent Application Laid-Open No. 9-3 discloses a method for solving problems such as a yarn quality deterioration due to a yarn sway phenomenon accompanying a high false twisting speed for improving productivity.
Japanese Patent Application Publication No. 16740 discloses a device provided with a cooling unit including a pair of thread contact walls for cooling one thread (for one weight). The pair of thread contact walls are formed such that the traveling thread contacts one of the thread contact walls or alternately contacts both thread contact walls, and extends in the machine longitudinal direction. The suction flow acts on the yarn in a direction intersecting the running direction of the yarn between the yarn contact walls.

[0004] By the way, with the recent increase in demand for plying yarn, it has been desired to improve the production efficiency of plying with two yarns, and better quality is also demanded in yarn quality. In the case where two yarns are combined, a false twisting device having a false twisting unit arranged side by side in the machine base longitudinal direction applies S twist to one yarn and Z twist to the other yarn, Thereafter, the yarns are combined and wound by a winding device.
In the false twist device, even if two false twist units are mounted on one supporting member, as described in Japanese Patent Publication No. 1-37491 and Japanese Patent Laid-Open No. 11-107087, the two false twist units are used. False twist units are arranged on the left and right before and after.

[0005]

In the twining process,
Conventionally, a single yarn is combined with two weights (one yarn per weight) by a false twisting machine in which a cooling unit and a false twisting device of the cooling device as described above are arranged side by side in the machine base longitudinal direction. I have. In this case, as shown in FIG. 9, since the respective devices are arranged side by side in the machine base longitudinal direction, the yarn is largely swung right and left by the cooling device 60, and the respective inlets of the cooling device 60 and the false twisting device 61 are provided. The bend angle of the two yarns to be joined at the section becomes large, and the bend angle of each of the two yarns is different, so that the yarn quality of the two yarns is different and good quality yarn cannot be obtained. There's a problem.

Further, in the conventional cooling device 60, since only one yarn can be cooled by one cooling unit 62, one yarn (1
Compared with the number of wound yarn packages in the case of false twisting in the unit of weight), the production efficiency is lower in the case of the plying process, in which the production amount is reduced by half. ,
Conversely, in order to increase the production efficiency, it is necessary to increase the number of false twisting machines in the machine longitudinal direction, and there is a problem that the size of the false twisting equipment is increased.

[0007] Therefore, the present invention solves the above-mentioned problems, so that the same production as in the case of false twisting of one yarn unit can be performed without adding a false twisting machine in the machine longitudinal direction in the twining process. It is an object of the present invention to provide a false twisting machine capable of obtaining a quantity and obtaining a plied yarn of good quality.

[0008]

According to the present invention, in order to solve the above-mentioned problems, the two yarns traveling in the cooling device section run back and forth as viewed from the front of the cooling device. It is characterized in that the cooling device is provided with a cooling unit, and the two yarns are cooled by the one cooling unit. Then, a false twist is applied to each of the two yarns by a false twisting device provided below the cooling device, and thereafter, the two yarns are subjected to plying.

[0009]

FIG. 1 is a schematic view showing a first embodiment of a false twister having a cooling device according to the present invention, and FIG.
FIG. In the false twisting machine, a clear stand 2 for storing the supply yarn package 70 is installed outside one side of the work passage, and a first inside of the clear stand 2 is provided inside the clear stand 2.
The yarn feeding device 3, the first heating device 4, the cooling device 5, the false twisting device 6 provided with two false twisting units before and after, and the second yarn feeding device 7 are arranged in this order from above to below. At the same time, the take-up device 11 is installed on the opposite side of the work passage, and the second heating device 8 and the third yarn feeder 9 are provided below the work table 12 in the work passage. The oil dispensing device 10 is installed, and these devices are installed for a plurality of spans in the machine base longitudinal direction with 12 weights (2 yarns per weight) as one span.

As shown in FIG. 2, the cooling unit 5 is provided with cooling units 15 and 16 for a total of 12 weights, each having 6 weights, for one duct 14, and a plurality of ducts 14 (for example, 2 to 10). The book is connected in a state of communication. An end of the connected duct 14 is closed, and the other end is connected to an exhaust fan (not shown) whose rotation speed of the driving motor is controlled by an inverter.
Due to the exhaust action of the exhaust fan, a suction action acts in the duct 14.

A smoke exhaust member 23 is provided above the duct 14 at a position corresponding to the cooling units 15 and 16.

As shown in FIGS. 3 and 4, the cooling units 15 and 16 are provided with U-shaped fixed wall members 1 at positions corresponding to the narrow vertical grooves 14a formed in the duct 14 for each weight.
7, 18 and the U-shaped movable wall members 19, 20
Are provided back to back.
The fixed wall members 17 and 18 are attached to the duct 14 with screws 39 with the seal member 40 interposed between the fixed wall members 17 and 18. In addition, the movable wall members 19 and 20 have brackets 21 and 22 whose lower portions are attached to the duct 14,
The upper part is rotatably attached to a smoke exhaust member 23 provided on the upper part of the duct 14 by pin bodies 24 and 25, respectively, and the movable wall members 19 and 20 are opened to enable threading. In addition, the movable wall member 19,
A seal member 41 is fixed to either the duct 20 or the duct 14 by screwing or bonding, and is interposed between the duct 14 and the movable wall members 19 and 20.

When the yarn is cooled, the suction flow of the duct 14 causes a suction flow to act on the narrow longitudinal groove 14a of the duct 14 in a direction intersecting with the running direction of the yarn.
This is performed when outside air flows into the gap between the back wall portions of the fixed wall members 17 and 18 and the movable wall members 19 and 20. The seal members 40 and 41 are made of soft synthetic rubber, synthetic resin, or the like. The seal members 40 and 41 allow the duct 14 and the fixed wall members 17 and 1 to the duct 14.
8 and the movable wall members 19 and 20 are prevented from flowing into the space between the cooling unit 1 and the cooling unit 1.
The efficiency of outside air flowing into 5, 16 is good, and the cooling effect is large.

The fixed wall members 17 and 18 have cooling yarn contacting walls 17a and 18a on their back surfaces, respectively, and the movable wall members 19 and 20 also have cooling yarn contact members on their back surfaces. It has contact walls 19a and 20a. And
The thread contact walls 17a, 18a of the fixed wall members 17, 18 and the thread contact walls 19a, 20a of the movable wall members 19, 20
Are formed irregularly at predetermined intervals in the yarn running direction, and in the cooling unit 15, the projections 19a2 of the yarn contact wall 19a are formed in the concave portions 17a1 of the yarn contact wall 17a, and the yarn contact wall 17a The thread contact wall 19a is
So that the yarn runs alternately on the upper surfaces of the projections 17a2, 19a2 of the yarn contacting walls 17a, 19a or runs on a tangent line between the two. Has become. The relationship between the concave and convex portions 18a1 and 18a2 of the yarn contact wall 18a and the concave and convex portions 20a1 and 20a2 of the yarn contact wall 20a in the other cooling unit 16 is the same as that of the cooling unit 15.

Each of the above-mentioned yarn contact walls is subjected to a mirror buff finish by nitriding stainless steel or subjected to hard chrome plating or frame plating to have a Vickers hardness of 700 or more and a surface treatment which is excellent in heat transfer with the yarn. Is preferred.

The space between the cooling unit 15 and the cooling unit 16 is wider at the lower part than at the upper part and is widened. However, the distance can be the same from the upper part to the lower part.

In the cooling units 15 and 16,
The protrusions of the yarn contacting wall are separated from each other by a predetermined gap (a yarn thickness of 2 to 2).
10 times is preferred. ) To have the fixed wall members 17, 1
A plurality of pins 32 having a length corresponding to the predetermined distance between the convex portions are provided between the movable wall member 19 and the movable wall members 19 and 20, and the movable wall member is pressed by a leaf spring 31 extended from the duct 14. 19 and 20 come into contact with the pin 32.

The smoke exhaust member 23 provided above the duct 14
As shown in FIG. 5, the yarn path is formed by a box body 34 having an opening 34a on the yarn running side, and the yarn path is extended on the extension of the opening 34a of the upper wall and the lower wall where the opening 34a is formed. Are mounted. Also, duct 1
4 The lower wall of the box 34 facing the upper part has a duct 14
A hole 34b of the same size that is communicated with the hole 14b formed in the upper portion is formed, and a suction force by a suction function in the duct 14 acts on the thread running portion in the opening 34a of the box body 34. When this suction force acts, the first heating device 4
The oil and smoke components of the yarn heat-treated in the above are sucked into the smoke exhaust member 23 before entering the cooling device 5 and exhausted to the outside through the inside of the duct 14.

Among the guides attached to the box 34, the guide 35 is attached in the state shown in FIG. 6, whereby the yarn path is regulated so that two yarns run parallel to the first heating device 4 per weight. . On the other hand, the guide 36 is attached in the state shown in FIG. 7, whereby the yarn exiting the first heating device 4 is cooled by two yarns per weight in the cooling units 15, 16.
The yarn path is regulated so as to be guided to each of the. 6 and 7
Are merely examples, and any shape may be used as long as it can perform the above-described function.

Next, the running of the yarn in the cooling units 15 and 16 will be described. Since the running of the yarn is the same, the running of the yarn in the cooling unit 16 will be described here. As shown in FIG. 3 which is a front view of the cooling device 5, after the two yarns run in parallel with the first heating device 4 and pass through the guide 35, as shown in FIG. 36, the direction is changed from the parallel running state to a direction perpendicular to the position, and the smoke exhaust member 23 travels from the front side to the rear side with the yarn positioned forward and backward for each yarn. Then, as shown in FIG. 4, the concave portion 18a1 formed in the fixed wall member 18 of the cooling unit 16 and the movable wall member 2
0, one thread is separated from the mounting portion of the cooling unit 16 by a predetermined distance, and another yarn is further separated from the position by a predetermined distance from the mounting portion of the cooling unit 16. Article is running. That is, the two yarns travel back and forth with respect to the front of the cooling device 5 in FIG. 3 and are cooled by one cooling unit.

By the way, the guides 35 and 36 for regulating the yarn path described above, when attaching them to the box 34, the two yarns at the guide 35 portion when the two yarns enter the guide 36 from the guide 35. The bending angle of each yarn is the minimum,
And the bending angle of each of the two yarns at the guide 36 when entering the cooling unit 16 from the guide 36 is also minimized and substantially the same.
(Here, the cooling unit 16 will be described.) Whether each yarn runs alternately on the upper surfaces of the projections 18a2, 20a2 formed on the yarn contacting walls 18a, 20a, or
Alternatively, the protrusions 18a2 and 20a2 may be mounted at positions adjusted so as to run on tangents to the upper surfaces of the respective protrusions 18a2 and 20a2.

Each yarn exiting the first heating device 4 as described above travels on a substantially straight line connecting the guide 36 and the guide 6a provided on the entrance side of the false twist device 6, and the cooling device 5 And is sent to the false twisting device 6.

As a second embodiment, the cooling units 15 and 16 of the first embodiment in the cooling device 5 are provided with two yarn guide grooves 50 on one surface as shown in FIG. The duct 51 may have a predetermined length. Both ends of the duct 51 are closed, and a passage 52 for the refrigerant airflow is provided on the opposite side of the yarn guide groove 50.
It is provided in communication with the inside. And this duct 5
1 is provided with two yarn guide grooves 50 located before and after the cooling device 5 so as to be located back and forth below the smoke exhaust member 23, and one of the flow passage openings 52 is provided with means for sucking outside air or blowing out cold air. The cooling device can be connected to an air conditioner (not shown).

In this case, two yarns per weight contact the bottoms of the two yarn guide grooves 50 one by one and run, and the air conditioner causes the air to flow from the other channel opening 52 to which the air conditioner is not connected. The yarn is cooled by sucking the air or blowing cool air for cooling into the duct 51 from the flow passage 52 to which the air conditioner is connected.

The yarn joining process using the false twisting machine provided with the cooling device according to the present invention described above is as follows.

The yarn is fed out from the supply yarn package 70 stored in the creel stand 2 by two yarns per weight, and the sent out yarn is sent to the first yarn feeder 3 via the first yarn feeder 3.
Heat treatment is performed in parallel with the heating device 4. Thereafter, the yarn passes through the smoke exhaust member 23 below the first heating device 4, the yarn path is changed at the guide 36, and the yarn is sent to the cooling device 5 at positions one by one before and after the yarn as viewed from the front of the cooling device 5. Cooled.

The two yarns exiting the cooling device 5 pass through a guide 6a provided on the inlet side of the false twisting device 6 to reach a false twisting device 6 provided with two false twisting units one after another. S twist is given to the yarn and Z twist is given to the other yarn. The false twisting device 6 has a configuration in which two false twisting units are provided substantially in a straight line before and after one supporting member, and the two false twisting units can be pulled out to the front side and threaded to the back side false twisting unit. However, it is also possible to use only the front false-twisting unit.

Then, the two yarns to which the S and Z twists have been applied are sent to a second feeding device 7, where they are combined, and each of a second heating device 8, a third yarn feeding device 3, and an oil agent applying device 10 is provided. , A predetermined process is performed, and then, the winding device 11 winds up.

[0029]

As described above, in the false twisting machine according to the present invention, the two yarns traveling in the cooling device section run back and forth as viewed from the front of the cooling device. The bending angle of the two yarns at the entrance of the twisting device can be minimized, and the bending angle of each of the two yarns can be made substantially the same. And a good quality yarn can be obtained.

The cooling device is provided with a cooling unit.
Since the yarn is cooled by the one cooling unit, it is possible to perform the yarn combining process for each weight (two yarns per weight), and the supply of the yarn from the supply yarn package is reduced by two.
Just by doubling, it is not necessary to stop the winding device by half as in the related art, and the decrease in production efficiency is eliminated. Further, in the twining process performed by using the false twisting machine according to the present invention, the same production amount as in the case of the false twisting process in units of one yarn can be obtained without adding a false twisting machine. That is, a remarkable effect is achieved in improving the production efficiency that the production amount can be doubled as compared with the conventional plying process.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a false twisting machine of the present invention.

FIG. 2 is a view as seen from an arrow II in FIG. 1;

FIG. 3 is a front view showing a cooling device of the false twisting machine of the present invention.

4 is a view taken in the direction of arrows II-II in FIG. 3;

FIG. 5 is a view taken in the direction of arrows III-III in FIG. 3;

6 is a view taken in the direction of arrows IV-IV in FIG. 5, and shows a state in which a guide is attached.

7 is a view taken in the direction of arrows VV in FIG. 5 and shows a guide mounting state.

FIG. 8 is a perspective view illustrating a cooling unit according to a second embodiment.

FIG. 9 is a front view showing a conventional false twisting machine.

[Explanation of symbols]

 5 Cooling device 6 False twisting device 11 Winding device 14, 51 Duct 15, 16 Cooling unit 17, 18 Fixed wall member 19, 20 Movable wall member 23 Smoke exhaust member 34 Box 35, 36 Guide 14a Narrow vertical slot 14b, 34b hole 17a, 18a, 19a, 20a yarn contact wall 34a opening

Claims (3)

[Claims] 1. A heating device for heating a yarn, a false twisting device for giving false twist to the yarn, and a yarn provided between the heating device and the false twisting device and heated by the heating device. And a cooling device that suppresses the vibration of the yarn and runs the yarn in a stable state. In the false twisting machine, the two yarns traveling in the cooling device section are viewed from the front of the cooling device. A false twisting machine characterized in that it runs before and after. 2. The false twisting machine according to claim 1, wherein the cooling device is provided with a cooling unit, and the two yarns are cooled by one of the cooling units. 3. The two yarns are passed through a cooling device, twisted for each yarn by a false twisting device provided thereunder, and then subjected to a plying process. The false twisting machine according to claim 1 or 2.