JPH11107084A - False twister - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a false twister enabling to lower the height of a frame, enabling to safely and surely perform a threading work only by a worker, and capable of dealing with a high speed operation. SOLUTION: This false twister is obtained by setting the creel stand 2 of a yarn-feeding mechanism to the outside of one side of a work way, and a first yarn feeder 3, a first heater 4, a cooler 5, a false twister 6 and a second yarn feeder 7 are attached to a frame 1 from the upper side to the lower side in this order on the inside of the creel stand 2. A winder 11 is set to the opposite side of the work way, and the yarn is moved from the second feeder 7 to the winder 11 through the lower portion of a work stand 12 disposed in the work way.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a false twisting machine such as a false twisting machine and a stretch false twisting machine.

[0002]

2. Description of the Related Art Generally, a false twisting machine for false-twisting a drawn yarn to obtain a bulky processed yarn, or a draw false twist for drawing an undrawn yarn or a half-drawn yarn and then false-twisting to obtain a bulky processed yarn. In recent years, the speed of a false twisting machine such as a machine has been increased to 700 m / min or more. The false twisting machine is, for example, Japanese Patent Publication No. 62-3
No. 8450 is installed on the mezzanine floor, and includes a first yarn feeder, a first heating device, a cooling device, a false twisting device, a second yarn feeder, a second heating device, and a third yarn feeding device. A configuration in which the yarn feeder is mounted on the machine frame in this order from top to bottom, and a winding device is installed on the opposite side of the work passage, or a yarn feeding mechanism on one side across the work passage, A false twist device, a second yarn feeder, a second heating device, and a third yarn feeder are installed in this order from top to bottom on the outside on the other side, and a winding device is installed on the inside thereof. ,
The first yarn feeding device and the first heating device are arranged above the yarn feeding mechanism, and the cooling device is arranged above the work passage.

[0003] A yarn feeding mechanism is provided on one side of a work passage as described in Japanese Utility Model Laid-Open No. 60-9136.
A false twisting device, a second yarn feeding device, a second heating device, and a third yarn feeding device are installed in this order from the top to the bottom on the outside on the other side, and the winding device is provided inside the work for the work. Cooling devices are installed above the aisles, respectively, and work is carried out on a work cart, and at the same time, maintenance work is performed on a work table such as the second floor position provided above the gantry. I have.

[0004]

In the above-described false twisting machine, the yarn feeding mechanism is installed on the mezzanine floor.
There is a problem that two operators are required for the threading operation. Further, in the latter case, there is a problem that there is a danger in the operation of getting on and off the work vehicle during the threading operation, the operation of threading on the work vehicle, and the like.

[0005] The present invention provides a false twisting machine capable of reducing the height of the machine base, enabling safe and reliable threading work by one operator, and coping with high speed. It is intended to do so.

[0006]

According to a first aspect of the present invention, there is provided a false twisting machine according to the present invention, wherein a yarn feeding mechanism is provided outside one side of the work passage with the work passage interposed therebetween. A first yarn feeder, a first heating device, a cooling device, a false twisting device, and a second yarn feeder are mounted on the machine frame in this order from top to bottom inside the yarn feeding mechanism, and a work passage is provided. The winding device is installed on the opposite side from the above, and the yarn is moved from the second yarn feeding device to the winding device under the work table installed in the work passage.

In the false twisting machine according to the present invention, the cooling device may be configured to determine whether the traveling yarn contacts at least one of the yarn contact wall surfaces with the pair of yarn contact walls. The yarn contact walls are arranged at predetermined intervals so as to alternately contact the surface of the yarn contact wall, and the yarn contact wall intersects the running direction of the yarn with respect to the yarn between the yarn contact walls. And a suction means for applying a suction flow in the direction of movement.

[0008]

FIG. 1 is a schematic front view showing one embodiment of the configuration of the false twisting machine of the present invention, and FIG.
FIG. 1 is a view taken in the direction of the arrow I. In the false twisting machine, a creel stand 2 as a yarn feeding mechanism is installed on both sides.
The winding device 11 is installed inside the first work passage with the first working passage therebetween, and the first yarn feeder 3 and the first heating device 4 are provided inside the winding device 11 with the second working passage therebetween. , The cooling device 5, the false twist device 6, and the second yarn feeder 7 are mounted on the machine frame 1 in this order from top to bottom, and below the work table 12 installed in the second work passage. Second heating device 8, third
The yarn feeding device 9 and the oil applying device 10 are installed.
A plurality of spans are installed.

The above-described creel stand 2 may have any structure as long as it supports a plurality of yarn packages, and it is preferable that the package support peg can be rotated in the horizontal direction. In addition, a creel cart can be used instead of the creel stand 2.

The first heating device 4 and the second heating device 8 are appropriately selected from those having a structure in which the yarn contacts the heating surface or a structure in which the yarn does not contact the heating surface.

The details of the structure of the cooling device 5 are shown in FIGS. 3, 4 and 5, and a cooling unit 15 having a pair of two yarns is attached to the duct 14 of the suction means 13 for the yarns. A plurality of ducts 14 (for example, 2 to 10 ducts) are connected, and an exhaust fan (not shown) whose number of rotations of a driving motor is controlled by an inverter is connected to an end thereof.

The cooling section 15 has a fixed wall member 16 attached by screws 17 so as to be located inside narrow narrow grooves 14a and 14b formed in the duct 14, and on both sides of the fixed wall member 16. A movable wall member rotatably attached to brackets 20 and 21 whose lower portions are attached to the duct 14 and a smoke exhaust member 22 installed at an upper portion of the duct 14 by pin members 23 and 24 so as to be located. 18 and 19.

The upper part of the movable wall members 18 and 19 has a duct 1
4, a bracket can be provided to be rotatable.

The above-mentioned duct 14 is formed such that the cross-sectional area decreases as the distance from the exhaust fan increases so that the speed of the suction fluid in the narrow longitudinal grooves 14a and 14b of each duct becomes substantially constant, or the groove width increases. Preferably
More preferably, a flow control orifice is provided for each span.

The fixed wall member 16 has cooling yarn contact walls 16a and 16b on both sides.
Although the interval between 6a and 16b is wider at the lower portion than at the upper portion, the width is wider.
6a and 16b can be configured to have the same interval between the upper and lower portions.

The thread contact wall 16 of the above-mentioned fixed wall member 16
a, 16b and the thread contact wall 18 of the movable wall members 18, 19
a and 19a are formed in irregularities at predetermined intervals in the yarn running direction, and the convex portion 18a2 of the movable wall member 18 is provided on the side of the thread contact wall 16a in the concave portion 16a1 of the fixed wall member 16; The convex portion 16 of the fixed wall member 16 is provided in the concave portion 18a1.
a2 is located, and the thread is fixed wall member 16
And the upper surface of the convex portions 16a2 and 18a2 of the movable wall member 18 are alternately contacted with each other or run on a tangent line between the two. The relationship between the other thread contact wall 16b and the thread contact wall 19a of the movable wall member 19 is the same as that of the thread contact wall 16a and the thread contact wall 18a of the movable wall member 18. Fixed wall member 16 and movable wall member 1
8 and 19, the gap is such that the yarn does not come into contact with the yarn contacting walls 16a, 18a, and 19a when the yarn is stopped, and when the yarn is running, it passes when the string vibrates minutely. If the gap is such that string vibration does not occur in the case of large string vibration, the passage of the tail knot can be improved.

The length (L) of the protrusion in contact with the yarn in the running direction of the yarn is such that the aerial running length of the yarn is 50 mm or less, and preferably 10 mm to 30 mm, and the contact of the yarn with the contact wall body. The length is set to 50% of the total length of the contact wall body, the width dimension (W) orthogonal to the running direction is set to 10 mm to 50 mm, and the gap dimension (δ) between the projections is set to 2 to 10 times the thread thickness. Is preferred.

The thread contact wall 16 of the above-mentioned fixed wall member 16
a and the thread contact wall 16b can be formed by two fixed wall members.

Each of the thread contact walls is subjected to a mirror buff finish by nitriding stainless steel, or to a surface treatment such as hard chrome plating or frame plating having a Vickers hardness of 700 or more and good heat transfer with the thread.

The movable wall members 18 and 19 are always opposed to the fixed wall member 16 by the pressing force of the plate-like springs 25 and 26 having a thickness of about 0.1 mm to 0.5 mm. , 19, preferably 2
The protrusions are adjusted so as to have a predetermined gap dimension (δ) by a gap adjusting member 27 screwed to the location.

One end of each of the leaf springs 25 and 26 has the movable wall member 1.
8 and 19, and the other end is brought into contact with the duct 14 by elastic force, or the plate springs 25 and 26
The gap is made as small as possible by adsorbing the other end to the duct 17 by the rubber magnet 28.

The gap adjusting member 27 includes a movable wall member 18,
A threaded screw 29 is fixed to the male screw formed on the male screw 19 and fixed with a nut 30, or a pin attached to the fixed wall member 16 or one of the movable wall members 18 and 19 is used.

When the movable wall members 18 and 19 are opened, they are fixed to the wall of the duct 14 by a hooking member 31 attached to the duct 14.

Heat release fins 32 and 33 are formed on the wall surface of the fixed wall member 16 adjacent to the narrow vertical grooves 14a and 14b of the duct 14 of the fixed wall member 16 described above. The fins 32 and 33 are formed by welding a plate made of the same material as the fixed wall member 16 to the fixed wall member 16 or by forming a fin member using the same material or an aluminum alloy, a copper alloy, or the like having a good thermal conductivity, and using screws, rivets, or the like. It is attached to the fixed wall member 16 by silver brazing or the like.

The fins 32, 33 are movable wall members 18, 1,
9 or both the fixed wall member 16 and the movable wall members 18 and 19.

The fins 32, 33 play a role of heat radiation and also play a role of preventing large lint or the like from entering the duct 14.

The smoke exhaust member 22 includes a box body 34 having a substantially rectangular opening 34a on the yarn running side, a partition plate 35 attached to a position adjacent to the yarn running inside the box body 34, and
It comprises a suction amount adjusting plate 36 movably attached between the box 34 and the duct 14.

The upper and lower walls forming the opening 34a of the box 34 have narrow longitudinal grooves 34b and 34c in plan view so that the thread can be threaded and the thread can run. The lower wall of the box body 34 facing the duct has a duct 1
A hole 34d of the same size is formed so as to communicate with a hole 14b formed in the upper wall of the upper wall 4, and guides 37 for regulating the yarn path are provided in the narrow vertical grooves 34b and 34c of the lower wall. 38 are attached in a state as shown in FIG.

The partition plate 35 is provided with narrow vertical grooves 35a and 35b in the direction in which the yarn runs.

The above-mentioned suction amount adjusting plate member 36 also has a box body 34.
A hole 36a having the same size as the hole 34d is formed, and the opening amount of the hole 36a is adjusted by moving the suction amount adjusting plate 36 in a direction approaching or separating from the running yarn.

The narrow vertical grooves 35a, 35b of the partition plate 35
The inside of the duct 14 is connected to the inside of the duct 14 by holes 14d, 36d, and 34d, and a suction force acts on the yarn running portion in the opening 34a of the box 34.

When a suction force acts on the opening 34 a of the box 34 forming the smoke exhaust member 22, the oil and smoke component of the oil agent of the yarn, which has been treated by the first heating device 4, enters the cooling device 5. Is removed by suction.

In the cooling device 5 described above, the smoke exhaust member 22
Travels on a substantially straight line connecting the guides 37, 38 of the false twisting device 6 and the guide 6a provided on the inlet side of the false twisting device 6.
When the suction force acts on the gaps between the fixed wall members 18 and 19 by the operation of 3, the yarn contact wall bodies 16 a, 18 a and 19 a are balanced with the suction force in the direction perpendicular to the running direction of the yarn. It travels in an arc shape while moving slightly.

The minute movement of the yarn and the suction fluid cleans deposits such as a small adhesive agent adhered to the yarn contact wall surface.

As shown in FIGS. 7 and 8, the cooling device 5 described above can have a shape in which the thread contact surface is curved in the vertical direction. The movable wall members 39 and 40 are always opposed to the fixed wall member 38 by the pressing force of at least one of the coil springs 43 and 44, and have a predetermined gap by pins 45 and 46. Seal members 47 and 48 made of soft synthetic rubber or synthetic resin are attached to the members 39 and 40 so as to prevent a fluid from flowing from a gap between the duct 14 and the movable wall members 39 and 40. Has become.

It is preferable that the yarn contacting wall of the movable wall members 39 and 40 has a flat surface so that the yarn contacts the entire length.

The movable wall members 39, 40 are provided with fins 49, 50 for heat radiation.

[0038]

Example 1 Using the above-described stretch false twisting machine, stretch false twisting was performed under the following processing conditions.

Processing conditions Type of yarn: polyester filament (POY 1)
40 denier-36 filament) 1st heating device: Effective heating length (0.78m) Outlet yarn temperature (215 ° C) False twisting device: Triaxial false twisting device (combination of 1 each of upper and lower ceramics and 7 rubber discs) ) Twistable untwisting tension ratio (T1 / T2 = about 1.2) Twist of about 3300 turns / m is put on the cooling part of the cooling device.

Cooling device: Effective cooling length (0.6 m) Average suction speed in the yarn running section (about 5 m / sec) Processing speed: 800 m / min to 1400 m / min Stretching ratio: Fluctuation in untwisting tension occurs (Solid line in FIG. 10) obtained by adding an empirical margin to a limit value at which surging occurs in the yarn path in the cooling device or the first heating device (shown by a solid line in FIG. 10). For the bulky yarn, strength (CN / d), elongation (%), crimp rate (CR%)
, The value was as shown by the solid line in FIG. 11, FIG. 12, and FIG.

When the average suction speed at the yarn running section in the cooling device 5 is set at 2 m / sec, the crimp rate (CR%) decreases as shown by the broken line in FIG.
As the suction flow rate increases, the yarn cooling effect increases and the crimp rate (C
R%) is improved.

Further, even if the suction speed is increased, the crimp ratio (CR%) saturates around a certain value as deduced from FIG.
Even if the suction speed is increased unnecessarily beyond this value, the energy for driving the fan is lost, so that it is preferable to set an appropriate suction speed according to the yarn thickness and the processing speed.

Therefore, simply, the driving motor of the fan is set to a constant condition by the inverter, or a suction speed or static pressure measuring device is provided on the representative weight, and the measured value and the set value are compared so as to reach the set suction speed. A favorable result can be obtained if the suction speed controlled by the feedback control is kept constant by using a vessel.

The average suction speed is obtained by measuring several points with a pitot tube and averaging the measured values.

The suction force is adjusted by controlling the rotation of an electric motor for driving the exhaust fan of the suction means 13 by an inverter.

[0046]

Comparative Example 1 A conventional cooling device for circulating cooling water through a jacket as shown in FIG. 9 instead of the cooling device 5 in the draw false twisting machine of FIG. 1 [effective cooling length (L): 1.08 m, contact The curvature radius (R) of the yarn portion: 10 m] is set, and the bulky yarn drawn and false twisted under the same conditions as in Example 1 (the draw ratio is a value indicated by a one-dot chain line in FIG. 10). When expressed as strength (CN / d), elongation (%), and crimp rate (CR%), the values were as shown by the dashed line in FIGS. 11, 12, and 13.

The measurement of the above-mentioned crimp rate (CR%) is performed in the order of scraping. 1. Take a skein of 10 turns under a preload of 0.05 CN / d to obtain a sample. 2. This sample is immersed in boiling water at 60 ° C. for 20 minutes. 3. Then, it is left at room temperature for 12 hours. 4. Next, it is immersed in water at 20 ° C. with a load of 0.04 CN / d. 5. Add a main load of 0.2 CN / d in water and measure the skein length (L1) two minutes later. 6. Remove the main load of 0.2 CN / d in water to remove 0.0
Only a load of 4 CN / d is applied, and after 3 minutes the skein length (L
Measure 2). 7. The crimp rate (CR%) is calculated by the following equation.

As is clear from the above results, in the case of the cooling device of the present invention, the cooling device of the present invention is slightly different from the conventional cooling device in terms of strength (FIG. 11). The value is smaller than the device, but generally required 4.6.
It has a strength of CN / d or more, and its elongation (FIG. 12) is a value larger than that of the conventional cooling device.

Regarding the crimp rate (FIG. 13), when the processing speed reaches 1200 m / min with the conventional cooling device, it becomes impossible to obtain the generally required crimp rate of 40%. In the case of the cooling device of 1, it is 4 even at 1400 m / min.
A crimp rate of 2% can be obtained, and it is understood that the cooling device of the present invention is superior.

Further, as for the stretching ratio (FIG. 10), the cooling device of the present invention can set the stretching ratio to a smaller value, and has an effect of preventing the surging phenomenon even when the process tension is lowered. It can be said that it indicates.

[0051]

Example 2 In order to confirm the relationship between the suction speed in the cooling device and the yarn cooling capacity for the yarn thicker than the yarn in the above-mentioned Example 1, the same draw false twisting machine as in Example 1 was used. Stretching false twisting was performed under processing conditions.

Processing conditions Type of yarn: polyester filament (POY 270 denier-48 filament) First heating device: effective heating length (0.78 m) Outlet yarn temperature (215 ° C) False twisting device: circumscribed triaxial false twist Apparatus (combination of one upper and lower ceramic and 7 rubber discs) Twistable untwisting tension ratio (T1 / T2 = about 1.2) Twist of about 2300 turns / m is put on the cooling part of the cooling device.

Cooling device: effective cooling length (0.6 m) Average suction speed (0 m / sec, 10 m / sec,
(27 m / sec) Processing speed: 800 m / min to 1200 m / min Stretching ratio: Empirical limit value at which fluctuation in untwisting tension occurs or surging occurs in the yarn path in the cooling device or the first heating device. A value obtained by adding a sufficient margin value (shown at the bottom of FIG. 14). The state of the crimp rate (CR%) due to the difference in the suction speed of the bulky yarn drawn and false-twisted under the above conditions is shown in FIG. It was a good result.

As is apparent from FIG. 14, a processing speed of 1100 m / cm is required to obtain a crimp rate (CR%) of 40% or more.
In the case of minutes, it is understood that the suction speed in the yarn running section needs to be 27 m / sec or more.

Further, in the case of a cooling device only by contact with the contact wall, since the suction speed is 0 m / sec, only a crimping rate of 32.5% is obtained even at a processing speed of 800 m / min. It can be seen that a long cooling device must be used.

Although the draw false twisting machine in the above-described embodiment has a configuration having a second heating device, the false twisting machine of the present invention is a draw false twisting machine not provided with the second heating device, or It goes without saying that the present invention can be applied to a false twisting machine not provided with a stretching mechanism.

In the false twisting machine of the present invention, a creel stand 2 serving as a yarn feeding mechanism is installed outside one side of the work passage as shown in FIG. Device 3, first heating device 4, cooling device 5,
The false twist device 6 and the second yarn feeder 7 are mounted on the machine frame 1 in this order from top to bottom, and a winding device 11 is installed on the opposite side of the work passage, and the work passage portion When the single-sided machine in which the second heating device 8, the third yarn feeding device 9, and the oil applying device 10 are installed below the work table 12 installed in the machine, it can be applied to multi-product small-lot production.

Further, a carrier truck 5 is installed facing each other as shown in FIG. 16 so that a package can be received from either the left or right in a central passage.
It is possible to arrange so that 1 can run freely and send it to the next process. Also, instead of the creel stand 2, a cassette type creel 52 that sets a creel carriage 53 holding a plurality of packages in a horizontal direction and a vertical direction at a predetermined package supply position can be used.

Further, when a yarn supplying device as shown in FIG. 17 is provided on the heat insulating floor 54 provided on the upper surface of the winding frame, the machine height is increased, but the installation area of the false twisting machine is increased. Can be reduced.

[0060]

According to the false twisting machine of the present invention, a yarn feeding mechanism is installed outside one side of the work passage with the work path interposed therebetween, and a first yarn feeder is provided inside the yarn feeding mechanism. , A first heating device, a cooling device, a false twist device, a second yarn feeder are mounted on the machine frame in this order from top to bottom, and a winding device is installed on the opposite side of the work path, Since the yarn is configured to move from the second yarn feeder to the winding device under the work table installed in the work passage section, the machine base is compared with other false twisting machines. The height can be reduced, and the initial equipment costs and maintenance costs of buildings, temperature control equipment, and certification equipment can be significantly reduced. In addition, thread hooking work, maintenance work, etc. can be performed safely and reliably only by one worker sitting on the work table, and a mezzanine floor stand is not required. The lifting operation can be greatly reduced.

Further, in the false twisting machine of the present invention, the cooling device is used to determine whether or not the pair of yarn contact walls contact the running yarn with at least one of the yarn contact wall surfaces. The yarn contact walls are arranged at predetermined intervals so as to alternately contact the surface of the yarn contact wall, and the yarn contact wall intersects the running direction of the yarn with respect to the yarn between the yarn contact walls. Since the suction means for applying the suction flow in the direction to be applied is mounted, the cooling capacity is increased by the cooling by the thread contact wall and the cooling by the suction fluid, and the length of the cooling device is reduced to the conventional length. The cooling device can be reduced to about half or less, the height of the machine base can be reliably reduced, and the threading workability, maintenance workability, and the like can be improved. In addition, since the length of the cooling device is reduced, the running resistance of the yarn is small, and the tension (process tension) at the twisted portion can be reduced. It is possible to obtain a high-quality bulky yarn whose strength, elongation, and crimping ratio do not decrease, and since the yarn runs in contact with at least one yarn contact wall, surging can be performed even if the process tension is reduced. The phenomenon can be prevented from occurring.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a first embodiment of a configuration of a false twisting machine according to the present invention.

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

FIG. 3 is a schematic front view showing one embodiment of the configuration of the cooling device.

FIG. 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;

FIG. 6 is an enlarged view showing details of a guide attaching portion in FIG. 3;

FIG. 7 is a schematic front view showing another embodiment of the configuration of the cooling device used in the false twisting machine of the present invention.

8 is a view taken in the direction of arrows IV-IV in FIG. 6;

FIG. 9 is a schematic perspective view showing one embodiment of a configuration of a cooling device used in a conventional false twisting machine.

FIG. 10 is a schematic diagram showing a relationship between a processing speed and a stable stretching ratio.

FIG. 11 is a schematic diagram illustrating a relationship between a processing speed and strength.

FIG. 12 is a schematic diagram showing a relationship between a processing speed and an elongation.

FIG. 13 is a schematic diagram showing a relationship between a processing speed and a crimp rate.

FIG. 14 is a schematic diagram illustrating a relationship among a processing speed, a stretching ratio, and a crimp ratio.

FIG. 15 is a schematic view showing a second embodiment of the configuration of the false twisting machine of the present invention.

FIG. 16 is a schematic view showing a third embodiment of the configuration of the false twisting machine of the present invention.

FIG. 17 is a schematic view showing a fourth embodiment of the configuration of the false twisting machine of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Machine frame 2 Creel stand 3 1st yarn feeder 4 1st heating device 5 Cooling device 6 False twisting device 7 2nd yarn feeder 8 2nd heating device 9 3rd yarn feeder 10 Oil supply device 11 Winding device 12 Work table 13 Suction means 14 Duct 15 Cooling unit 16, 38 Fixed wall member 17 Screw 18, 19, 39, 40 Movable wall member 20, 21 Bracket 22 Smoke exhaust member 23, 24, 41, 42 Pin body 25, 26 Plate shape Spring 27 Gap adjusting member 28 Rubber magnet 29 Screw body 30 Nut 31 Hook member 32, 33, 49, 50 Fin 34 Box 35 Partition plate 36 Suction adjusting plate 37, 38 Guide 43, 44 Coil spring 45, 46 Pin 47 , 48 Sealing member 51 Transport cart 52 Creel cart 53 Cassette type creel 54 Insulated floor 14a, 14b, 34b 34c, 35a, 35b narrow longitudinal grooves 16a, 16b, 18a, 19a yarn contact wall 34a opening 14d, 34d, 36a hole 16a1,18a1 recess 16a2,18a2 protrusions

Claims (2)

[Claims] A yarn feeding mechanism is provided on one side outside of a work passage, and a first yarn feeder and a first yarn feeding device are provided inside the yarn feeding mechanism.
A heating device, a cooling device, a false twist device, and a second yarn feeder are mounted on the machine frame in this order from the top to the bottom, and a winding device is installed on the opposite side of the work path, and the yarn is removed. A false twisting machine characterized in that it travels below a work table installed in a work passage and moves from a second yarn feeder to a winding device. 2. The cooling device according to claim 1, wherein the pair of thread contact walls are provided at a predetermined interval such that the traveling thread contacts at least one of the thread contact wall surfaces or alternately contacts each of the thread contact wall surfaces. Suction means for applying a suction flow to the yarn contacting wall body in a direction intersecting the running direction of the yarn with respect to the yarn between the yarn contacting wall bodies. The false twisting machine according to claim 1, wherein the false twisting machine has a configuration.