KR0131685B1 - Apparatus for drawing and false-twisting - Google Patents

Abstract

Provided is an apparatus for combusting after stretching to obtain a high-quality processed yarn having few dyeing spots without unstable position of thread thread due to twist torque or thread vibration.

In the stretching apparatus of the thread which is formed by the heating means 3 for heating the traveling thread, and the combustion means 5 which are arranged downstream of the heating means and twist the thread, and which stretch and twist the thread. Stretching and twisting device of thread yarn, the twist fixing means (11) for fixing the propagation of the twist arranged in the heating means.

Description

Stretching Combustion Device

1 is a cross-sectional view of the drawing combustor of the present invention.

2 is a cross-sectional view of the heating means used in the drawing combustor shown in FIG.

3 is a view as seen from arrow A of FIG.

4 is a cross-sectional view of the twisting roller.

5 illustrates another embodiment of the heating means used in the present invention,

5a is a sectional view.

5b and 5c are seen as arrows B in FIG. 5a.

FIG. 5D is a partial sectional view of the same cross-sectional view as FIG. 5A. FIG.

6 is a sectional view of another embodiment of a heating means used in the present invention.

7 is a cross-sectional view of another draw combustor of the present invention.

8 is a cross-sectional view of the heating means shown in FIG.

9 is a diagram showing the stretchable tension of thread which corresponds to the tension of thread during running between upstream of the twist fixation guide and heating means outlet in the present invention and the temperature of thread in the vicinity of the inlet in the heating means.

10 is a cross-sectional view of another embodiment of a twist lock roller.

Fig. 11 is a diagram showing the stretchable tension of a thread which corresponds to the tension of the thread during travel between the twisting fixing guide upstream and the heating means outlet in the prior art and the temperature of the thread near the inlet in the heating means.

12 is a detailed view of another embodiment of a heating means for use in the present invention.

13 is a diagram showing the temperature of thread thread passing through the inside of the heating means.

14 is a diagram showing the tension of thread thread passing through the inside of the heating means.

FIG. 15 is a sectional view taken along line A-A in FIG.

16 is another embodiment, FIG. 16A is a front view and FIG. 16B is a B-B cross section of FIG. 16A.

17 and 18 are front views of yet another embodiment, respectively.

19 is a sectional view of another embodiment of a heating means of the present invention.

* Explanation of symbols for main parts of the drawings

Y: thread 3: heating device

4a, 4b: Stabilizing track 5: Combustor

6, 9, 10: feed roller 8: package

11: Twist lock roller 31, 32, 33: Roller

34: pin

[Purpose of invention]

[Technical Field to which the Invention belongs and Prior Art in the Field]

[Industrial use]

The present invention relates to a drawing and combusting device of a synthetic fiber yarn such as polyester and polyamide. In particular, the present invention relates to an apparatus for stretching / processing semi-stretched yarn (POY) and unstretched yarn (UDY) of such a synthetic fiber yarn at a high speed of 400 m / min or more.

[Prior art]

Conventionally, a combustion apparatus is arranged at a downstream position of the heating means, and twisting means are arranged and twisted near the inlet of the heating means to prevent the twist given by the combustion device from being traced back upstream of the heating means along the thread. The bearing of the fixing means was used as a rolling bearing, and the twisted fixing means was rotated by winding the thread that travels on the twist fixing means.

In the other conventional drawing combustor, as described in Japanese Patent Application Laid-Open No. 59-73378, one heating means is arranged in the drawing combustor, and the twist of the thread is installed upstream of the heating means, that is, the inlet side of the heater. The guides are arranged. One heating device was arranged in the drawing combustor, and partly contacted with the regulating guides of the thread arranged in the heating device, so that the thread was bent or zigzag, and the thread was stretched and combusted.

[Technical problem to be achieved]

However, in recent years, the processing speed of thread yarns has been accelerated and the fineness of thread yarns being processed has become small. As a result, as the processing speed becomes high, if the twist fixing means is installed near the inlet of the heating means as described above, the viscous resistance of the bearing lubricant of the twist fixing means or the rolling resistance of the rolling bearing rises rapidly. The same problem occurred.

As an example, in the case where 15-denier polyester yarns are stretched and burned, as shown in FIG. Because of the size, the tension upstream of the twist fixing means (left side of the twist fixing means of FIG. 11) becomes extremely small, so that the thread is shaken upstream of the twist fixing means, or wound around the feed roller upstream of the twist fixing means. There was a problem that the process state was not stable.

When the processing tension is increased in order to prevent the thread thread from winding, the thread tension at the inlet of the heating apparatus becomes a value near or equal to the stretching tension determined corresponding to the thread temperature near the inlet of the heater. The position where the stretching point of was formed was shaken in the direction of the slope of the heating apparatus in the vicinity of the inlet of the heating device, or a variation occurred in the physical properties of the processed yarn obtained by the shaking of the stretching point, resulting in dyed spots.

Further, in the prior art of Japanese Patent Application Laid-Open No. 59-73378, since the twist fixing guide of the thread is arranged upstream of the heating means, the twist given by the combusting means enters the heater from inside the heater along the thread. Twisting fixing guide is traced back and twisting reaches to or near the stretching point. For this reason, there existed a problem that the position of extending | stretching point of thread thread became unstable by a combustible torque and a vibration of a thread, and the dyeing spot generate | occur | produced in thread thread.

In addition, in the related art, due to the combustion means arranged downstream of the heating apparatus, in order to prevent surging phenomenon (shape in which the thread vibrates) occurring upstream, the tension of the thread is increased above a predetermined tension. Was setting. As a result, the thread tension at the inlet of the heating apparatus becomes a value near the maximum tensile tension corresponding to the thread temperature of the vicinity of the inlet of the heating apparatus, or a value greater than or equal to the maximum stretching tension. In the vicinity of the inlet of the apparatus, it was shaken in a certain area in the longitudinal direction of the yarn, and the shaking of this drawing point caused a deviation in the physical properties of the yarn, resulting in dyeing spots on the obtained yarn.

In particular, the phenomenon as described above was remarkable as the yarns with small fineness, the yarns with small fineness of single yarn, and the high speed processing (the tension of yarns that suppress surging phenomenon increase).

Further, in the prior art of Japanese Patent Application Laid-Open No. 59-73378, the bending angle (contact angle) between each of the plurality of regulating guides and the seal is approximately equal, and the tension gradient between the inlet and the outlet of the heating means is small. The stretching point position was not stable. In particular, the position of the stretching point of the thread is unstable due to the fluctuation of the twist torque by the combustion means, the vibration of the thread or the vibration of the tension, and the stretching point of the thread moves in the flow direction of the thread to move the part with different twist counts. Stretch spots occurred and dyed spots occurred in yarn.

It is an object of the present invention to provide a stretchable combustor capable of obtaining a high quality processed yarn without dye spots even in a thread having a small fine thread, a thread having a single fine thread, and high speed processing.

An object of the present invention is to provide a stretched combustible plant value capable of obtaining a high quality processed yarn having few dyeing spots without causing unstable stretching positions of thread yarns by vibrating torque or thread vibration.

[Configuration and Function of Invention]

In the present invention, the above-described object is provided with a supply means for heating the traveling thread, a combustion means arranged downstream of the heating means and twisted therein and arranged downstream of the combustion means, and the thread being supplied to the supply roller. The stretching means for stretching the yarn and extending and burning the yarn, in the stretching apparatus for stretching the twisting means for fixing the traces of twisting by the means of twisting or the resistance of the yarns for reducing the traces of twisting. It is achieved by the stretching / twisting apparatus of the thread, characterized in that the temperature of the thread passing through the inside of the heating means is arranged on the side of the combustion means more at the position exceeding the glass transition point.

According to the present invention, since the twist fixing means of the thread or the resistance of the thread to reduce the traces of twist are arranged in the heating means, stretching can be generated in the thread at the position where the twist is not applied or the position where the twist is reduced. Will be. Therefore, even if shaking occurs in the thread by the vibration torque of the thread and vibration of the thread, the position of the stretching point can be made a stable position, and the actual quality of the processed yarn can be improved.

In addition, according to the present invention, it is formed of a supply roller, a heating device, a combustor arranged at a downstream position of the heating device, and a feed roller arranged downstream of the combustor and extending the thread thread between the supply roller, A drawing-twisting apparatus for threading, in which the twist is imparted by passing a thread through a heating thread, which surrounds all or a part of the synthetic fiber thread which is traced by the combustor, in a non-contact state. The resistance of the thread is arranged to be arranged downstream from the inlet, and the thread tension upstream of the resistor is less than the stretch tension corresponding to the temperature of the thread passing between the resistor from the inlet of the heating device. The yarn tension downstream from the resistor is equal to or higher than the stretching tension at the temperature near the resistor. By the stretching of the yarn false twist apparatus, it characterized in that there is provided to.

In addition, the resistance imparting means, the high resistance imparting means, and the resistor reduce the traces of twist due to thread, and at the same time change the resistance imparting means, the high resistance imparting means, and the dead force before and after the resistance.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in detail the present invention.

EXAMPLE

In Fig. 1, yarns Y (drawn from the feed yarn 1 by a pair of take-out rollers 2a and 2b) (semi-drawn yarns (POY) of synthetic fiber yarns such as polyester and polyamide) or undrawn yarns ( UDY)) is drawn between the feed roller 30 formed by a pair of nip rollers and the feed roller 6 formed by a pair of nip rollers.

자 형상으로 배치된 한쌍의 스테이빌라이징트랙(4a), (4b) 및 사조(Y)를 꼬는 가연수단(5)이 설치되어 있다. 스테이빌라이징트랙(4a), (4b)은 가열수단(3)에 의해 가열된 사조(Y)를 냉각하는 것이다. 가연수단(5)은 공지의 스핀들 타입, 다축다판(多軸多板) 타입, 그 외의 것이 사용될 수 있다.Between the feed roller 30 and the feed roller 6, the heating means 3 bent in an L shape and the heating means 3 downstream.

Combustible means 5 for twisting a pair of stabilizing tracks 4a, 4b and thread Y arranged in a shape of a child is provided. The stabilizing tracks 4a and 4b cool the thread Y heated by the heating means 3. The flammable means 5 may be a known spindle type, a multiaxial multi-plate type, or the like.

The twist imparted by the flammable means 5 is traced upstream along the thread Y and heated in the heating means 3 to fix the twist.

Although the 2nd heater 31 is provided in the downstream of the feed roller 6 suitably, it can also be comprised without providing the 2nd heater 31 as needed.

Further, after passing through the transfer rollers 9 and 10, the yarn Y is wound as a package 8 by a winding device formed by the friction roller 7 and the cradle.

The structure of the heating means 3 is demonstrated by FIG. The heating means 3 of the illustrated embodiment is bent in an L shape as shown in FIGS. 1 and 2, and the case 12 of the heating apparatus, which surrounds each curved portion thereof, 12 is formed of sheath heaters 15 and 18 and heat plates 17 and 20 of heating means respectively heated by the sheath heaters 15 and 18, respectively. On the surface of the hot plates 17 and 20, a plurality of actual regulation guides 16 and 19 having grooves 16a and 19a for running in the center are provided. In addition, other heating elements may be used in place of the sheath heaters 15 and 18.

In the middle portion of the two heating means portions bent in the L-shape formed as described above, the twist fixing roller 22 is rotatably provided as one aspect of the twist fixing means 11. The twist fixing roller 22 is provided on the support 26 so as to be movable between the normal processing position of the solid line and the thread hanging position shown by the broken line on the inner surface of FIG. This causes the heating means 3 to be separated into two parts 13, 14 along the upstream and downstream of the twist lock roller 22. In addition, in FIG. 2, the code | symbol 21 has shown the heat insulating material of the heating means 3. As shown in FIG.

The details of the twist fixing means 11 are shown in FIG. The shaft 23 is clamped by the nut 27 to the support 26. In the shaft 23, a plurality of eight-shaped grooves 23a are formed on the circumferential surface thereof, and a twist fixing roller 22 is attached to the portion where the grooves are formed. In this way, the twist fixing means 11 is constituted by a fluid dynamic air bearing between the shaft 23 and the twist fixing roller 22.

The flanges 24 and 25 have thrust grooves on the side of the twist lock rollers, which are fitted to the shaft 23 and form thrust air bearings by the thrust grooves, and have an axial direction of the twist lock rollers 22. It is designed to prevent movement.

On the surface of the twist fixing roller 22, a plurality of right root members 22a, which are well known in a conventional twist fixing roller, are alternately formed.

In the present embodiment formed in the above configuration, the thread Y drawn from the supply yarn 1 is stretched between the supply roller 30 and the transfer roller 6. In this case, it is heated by the heating means 3 and is stretched by the speed difference between the circumferential surfaces of both rollers between the feed roller 30 and the feed roller 6. In particular, in the heating means 3, the twist fixing means 11 is provided, and the twist provided by the flammable means 5 is traced back to the twist fixing means 11. In this apparatus, the thread thread is stretched until reaching the twist fixing means 11, and the twist point is fixed to the thread thread stretched in this state, so that the stretching point is fixed, and thus the so-called processing of thread thread. The actual quality of the yarn becomes very good.

In this embodiment, the twist fixing means 11 is located at the position of the combustor 5 side rather than the position where the temperature of the thread which passes through the inside of the heating means 3 is heated from the inlet side and the temperature exceeds the glass transition point. It is installed. Therefore, the thread thread Y heated by the heating means 3 is heated to a temperature exceeding the glass transition point between the inlet and the twist fixing means, so that the thread thread is reliably drawn therebetween.

Another embodiment of the present invention will be described with reference to FIG. In this embodiment, the heating means 3 is arranged in a substantially linear shape as shown in FIG. 5A without bending the L-shape as in the above-described embodiment. In the case shown in the direction of arrow B in FIG. 5A, three rollers 31, 32, and 33 are arranged in a zigzag manner in FIG. 5B. Similarly, in FIG. 5C, the roller 32 and the pin 34 are arrange | positioned away from an apostle. Thereby, the twist fixing means roller 32 and the roller 31 or the pin 34 (these rollers 31 or the pin 34 are disposed upstream of the twist fixing means 32 and act as guides). In this way, the thread is bent, and in this way, the thread upstream of the thread upstream of the twist fixing means 32 is prevented from being traced back, and the thread is stretched, stretched and stretched between the twist fixing means. have.

In particular, as shown in FIG. 5C, the twist thread is bent between the roller fixing means 32 and the guide pin 34 so that a tension difference can be generated upstream and downstream of the seal guide by friction of the guide. It is possible to ensure the stretching occurs in the fixed guide.

As another form, as shown in FIG. 5d, between the actual regulation guides 19 of a heating plate, the roller 35 which has a rotating shaft orthogonal to FIG. 5a is rotatably provided, and this roller 35 implements actual regulation. It is also possible to push the thread Y running on the guide 19.

The roller 35 acts as a twist fixing means, and the roller 35 fixes the twist twisted along the thread, and the mounting position of the roller 35 is a glass transition point. Since it is located downstream from the position, the stretching point is reliably fixed between the inlet of the heater and the roller 35, and twisting is applied after the fixing point is secured, so that the variation of the stretching point can be prevented.

Particularly, in the case where a high resistance imparting means is provided among the heating means as shown in FIG. 5C, the resistance imparted by the thread between the imparting resistance means and the twist fixing means is given to the thread imparted by the imparting means. It is preferable to set so as to be larger than. In this way, the stretching point is reliably fixed in the high resistance imparting means.

In the embodiment shown in FIG. 2, the guide 16 is arranged upstream of the twist fixing means 11, and the thread of the guide 16 is bent between the guide and the twist fixing means 11 so that the friction of the guide 16 is achieved. The tension difference is generated upstream and downstream of the guide 16 by means of the present invention. However, in the present invention, the guide is arranged downstream of the twist fixing means, and the thread is bent between the twist fixing means and the guide, and guided by friction of the guide. It is also possible to cause tension differences to occur upstream and downstream of. An example is shown in FIG.

In FIG. 6, the twist fixing means 11 is provided in the heating means 3, and the twist provided by the combusting means 5 to the twist fixing means 11 is traced back. In this apparatus, the thread until it reaches the twist fixing means 11 is heated near the glass transition point, and the thread is given resistance to the thread by the guide pin 34 in the state, and the tension of the thread in the downstream is guided. Since the pin 34 is stretched in a state equal to or greater than the stretching tension of the thread against the temperature of the thread, it is possible to ensure that a stable stretching occurs. The tension of the thread upstream than the guide pin 34 is set to a value lower than the stretching tension of the thread corresponding to the temperature of the thread upstream than the guide pin 34.

Further, the structure of the twist fixing means 11 is the same as described above with reference to FIG. 4, and the grooves 19a are formed in the actual regulation guide 19 as shown in FIG.

자형상으로 배치한 가열장치(3)의

자 형상으로 절곡된 부위에 꼬임고정수단(11)을 배치하고 있었으나, 제7도에 도시한 연신가연장치에서는 가열수단(3)이 직선형상을 하고 있고, 그 상류측에 꼬임고정수단(11)이 설치되어 있다.FIG. 7 is a cross-sectional view of the drawing combustor illustrating another embodiment of the present invention, and FIG. 8 shows a detailed view of the heating means 3. In the drawing combustor shown in FIG.

Of the heater 3 arranged in a shape of a child

Although the twist fixing means 11 was arranged at the portion bent in the shape of a child, in the stretching combustor shown in FIG. Is installed.

The structure of the twist fixing means 11 is the same as that shown in FIG. By twisting and winding the thread between the ribs 23a and 23b of the twist fixing means 11, the trace of twist according to the thread is fixed.

The structure of the heating means 3 of this embodiment is demonstrated by FIG. The heating means 3 of the illustrated embodiment is heated by the case 13, the seed heaters 15 and 18 installed in the case 13, and the sheath heaters 15 and 18, respectively. It is formed by the main bodies 17 and 20 of the means, and the actual regulation guide 19 which has the groove | channel 19a for real running in the center part is provided in the main body 17 and 20 surface. In addition, other heating devices may be used in place of the seed heaters 15 and 18.

In one example of the specific embodiment conditions, 550 ^° C. is set between 550 ^° C. and 0.3m above 0.3 m from the inlet of the heating means 3 to 290 ^° C. up to 1m. In the above state, the yarn of the polyester POY is stretched and heated to be 15 de / 8f after processing.

In the present embodiment, the heating means is divided into two, but one heating apparatus or a plurality of combinations may be used.

The guide 40, which acts as a resistor, preferably has a radius of curvature of the thread at the contact portion of the thread and the guide 40 to be 2 mm or more to reduce the processing with the thread.

In this embodiment, a heating device and a sensor are arranged in this guide 40, and the guide is controlled to have a predetermined temperature.

By setting the temperature of the guide 40 to a predetermined value and giving a resistance so that the tension of the upstream thread of the guide 40 is equal to or less than the stretching tension, fixing of the stretching point is assured.

9 is a drawing tension (extension tension and curve L) corresponding to the tension of thread during running between upstream of the twist fixation guide and the heating means outlet in the present invention and the temperature of thread in the vicinity of the inlet in the heating means. To show. As shown in FIG. 9, since the rotational resistance of the twist fixing means is not large compared with the processing tension of the thread, the tension upstream of the twist fixing means [twist of FIG. 9 (example of this application) and FIG. 11 (conventional example) Compare the left side of the fastening means] is not extremely small, so that the thread is not shaken upstream of the twist fixing means and is not wound on the feed roller upstream of the twist fixing means, thereby making the process state stable.

In the embodiment shown in FIG. 4, a dynamic pressure fluid bearing is used for the twist fixing means 11, but a static pressure fluid bearing for supplying compressed air may be used as shown in FIG. . In FIG. 10, the compressed air supplied from the compressed air supply port 29 via the compressed air supply hole 23b in the shaft 23 has a bearing air film between the shaft 23 and the twist lock roller 22. As shown in FIG. Form. Also, 50 is a 0 ring.

The engagement part with the fluid bearing is designed to support both radial and thrust loads by spherical engagement, or to support radial loads with cylindrical shafts, and to support thrust loads separately by thrust washers. It is okay.

And another embodiment of the heating means 3 is demonstrated based on FIG. In addition, the drawing combustor provided with the heating means 3 is similar to that of FIG. The heating device 3 of the illustrated embodiment is bent in an L-shape as shown in FIG. 12, and includes a case 12 of a heating device that surrounds each bent portion thereof, and a shie provided in the case 12. It is formed of the hot plates 17 and 20 of the heater 3 heated by the heaters 15 and 18 and the sheath heaters 15 and 18, respectively. On the surface of (20), a plurality of actual regulation guides (19) having grooves (19a) for running in the center are provided. In addition, other heating elements may be used in place of the sheath heaters 15 and 18.

자 형상으로 배열설치하였다. 저항체로서 작용하는 가이드(40)는 사조와 이 가이드의 접촉부의 곡률반경을 2mm 이상으로 하여 사조와의 처리를 작게 하는 것이 바람직하다.In this embodiment, the heating device is

Arranged in the shape of a child. The guide 40, which acts as a resistor, preferably has a radius of curvature of the thread and the contact portion of the guide of 2 mm or more to reduce the processing of the thread.

자를 이룬 열판(17),(20)의 안쪽을 사조(Y)가 주행하도록 해도 무방하다. 또한 제15도는 제8도의 A-A 단면도이며, 가열수단(3)의 덮개(51)에 실규제가이드(40)가 부착되어 있는 상태를 알 수 있다.In this embodiment, the heating means is divided into two, but one heating device or a combination of a plurality of heating devices may be used. In addition, as shown in FIG. 8, the hot plates 17 and 20 of the two heating apparatuses may be arranged substantially in a straight line.

The thread Y may run inside the hot plates 17 and 20 that form the ruler. 15 is AA sectional drawing of FIG. 8, and it turns out that the real regulation guide 40 is attached to the cover 51 of the heating means 3. As shown in FIG.

부(100a),(101a),(102a)를 가지는 실 규제가이드(100),(101),(102)를 고정하여 설치해도 되며, 이 실시예에서는 제16b도에 도시한 바와 같이 각 실규제가이드(100),(101),(102)를 고정하고 있으나, 실걸기시에 실규제가이드(103)를 횡방향으로 이동하여 사도를 일직선형상으로 하고, 실걸기 완료후, 제16a도에 도시한 바와 같은 상태로 되돌아오도록 할 수도 있다.In another form, for thread guidance as shown in FIG.

The thread regulation guides 100, 101, and 102 having the parts 100a, 101a, and 102a may be fixed and installed. In this embodiment, as shown in FIG. Although the guides 100, 101, and 102 are fixed, the thread control guide 103 is moved in the lateral direction when threading, so that the slope is in a straight line shape. You can also go back to the same state.

In the embodiment shown in FIG. 12, the thread has a large curvature slope of R in FIG. 12 according to the actual regulation guide of the heating means, but the slope is a straight line or a resistor 40 as shown in FIG. ) And the seal guide 41 may be zigzag. In any case, the tension of the thread of the upstream of the resistor 40 must be suppressed below the elongation tension corresponding to the temperature of the thread of thread.

13 is a diagram showing the temperature of thread thread passing through the inside of the heating means.

In this embodiment, 550 ^° C. is set between 0.3 m from the inlet of the heating means 3, and 290 ^° C. is over 1 m up to 0.3 m. FIG. 13 shows a state in the case where the POY 125de / 36f of the polyester is stretched at a draw ratio of 1.66 in the above state to obtain a processed yarn of 75de.

FIG. 14 shows the tension of thread thread passing through the heating means of the embodiment of the present invention shown in FIG. 12 and the tension of thread thread in the conventional apparatus.

In the embodiment of the present invention, the tension (shown by the solid line L2) of the thread traveling in the two hot plates 17 and 20 is T0 at the heating means inlet F, T1 at the heating means outlet E, Between the inlet (F) and the outlet (E), each of the regulatory guides (19) by the frictional resistance between the control guide 19 arranged in accordance with the threaded running path of the hot plate 17, 20 and the contact portion of the thread Each step increases little by little. Moreover, the guide 40 which acts as a resistor is provided between the both heat plates 17 and 20, and the big tension difference arises before and behind this guide 40 (refer G).

On the other hand, in the conventional apparatus, two hot plates 17 and 20 are arranged in a substantially straight line shape, and a plurality of real regulation guides 19 are provided on the hot plate (a form in which the real regulation guide 40 of FIG. 8 is removed). . The mounting force (shown by broken line L1) is slightly stepped for each regulation guide 19 due to the frictional resistance between the regulating guide 19 arranged along the tramway of the hot plates 17 and 20 and the contact portion of the thread. It increases in shape, and as a whole, a gradient of tension (D) → (E) occurs at the inlet D from the inlet D of the heating means. In addition, the magnitude | size of this exit tension E is set to the value which the thread of a running does not cause surging.

In addition, although the tension (shown by the solid line L2) of the embodiment of the present invention and the tension (shown by the broken line L1) of the conventional example overlap each other in the latter part of the heating means, in FIG. The tension L1 is shown to be slightly higher than the tension of the embodiment of the present invention in which the solid lines are shown.

In addition, the stretchable tension (stretching tension) of the thread corresponding to the temperature of thread in the heating means 3 is a value shown by (L3). Here, (L1) and (L3) are extremely close or overlap in the vicinity of the inlet of the heating means.

Disturbance (temperature) by forming a large tension drop upstream of the guide 40 in the present invention with respect to the stretching tension L3 corresponding to the temperature of the yarn traveling in the hot plates 17 and 20. In spite of fluctuations, fluctuations in twisting torque of the twisting device, etc.), the drawing point is fixed in position. That is, the tension (L1) fluctuates in the directions of arrows (A) and (B) due to disturbance during yarn processing, fluctuation in twist number, rising airflow, release tension of yarn, fine spots, and vibration of yarn, and so on. L3) fluctuates in the direction of an arrow (C). As a result, the position where the stretching point occurs varies. In severe cases, the spot where the stretching point occurs moves near the inlet of the heating means, and spots of physical properties occur, which causes dyeing spots.

According to the present invention, however, the resistors 40 which provide resistance at positions where the temperature of the thread thread is stable are arranged, and the thread tension upstream of the resistor 40 is suppressed to the elongation tension L3 corresponding to the temperature of the thread thread. Since the same disturbance occurs as described above, the stretching point position is fixed at the position of the resistor to obtain a high quality yarn without dyed spots. It is preferable that the thread tension of the heating means inlet is 0.9 or less of the stretching tension corresponding to the temperature of the chamber between the inlet of the heating means and the resistor.

자 형상으로 하고, 가이드(40)부에서 실과 가이드의 접촉각을 (θ)로 하며 이 저항체의 상류와 하류에서 사조에 장력차를 부여하고 있다. 이 실시예에서는 가이드와 사조의 마찰계수(μ)를 0.4, 접촉각(θ)을 25도로 하고 있다.In this embodiment, the heating means 3 is shown in FIG. 12, and the heating device X and the heating device Y are

It is shaped like a child, and the contact angle between the thread and the guide is (θ) at the guide 40, and the tension difference is applied to the thread at the upstream and downstream of the resistor. In this embodiment, the friction coefficient mu between the guide and thread is 0.4 and the contact angle θ is 25 degrees.

In particular, when the thread fineness is low, the rotational resistance of the twist fixing guide greatly affects the quality of thread. Therefore, it is preferable to drive the bearing of the twist fixing guide at an air bearing (either dynamic or static pressure may be combined) or at a predetermined speed.

In this embodiment, although the contact angle between the resistor and the thread is fixed, the thread tension at the inlet of the heating means can be detected to change the contact angle between the resistor and the thread to feed back the tension of the thread.

In still another embodiment, a heating means for driving and heating a thread, and a heating means for arranging downstream of the heating means to form twisting means for twisting thread and extending the thread to stretch the thread, the means for heating the thread The regulating means for fixing the position of the stretching point of the thread and the high resistance imparting means to the thread are provided, and the resistance to impart the thread to the thread by the high resistance imparting means is the downstream of the high resistance imparting means. It may be larger than the resistance received.

Here, it is preferable to make the position where the curvature by a restricting means becomes maximum is downstream from the position where the temperature of yarn thread exceeds the glass transition point.

[Effects of the Invention]

According to the present invention, it is possible to obtain a high-quality processed yarn without dye spots even in the thread of small fine thread, the thread of small single thread, and high speed machining, and the position of the soft core of the thread is not unstable by the combustion torque or the vibration of the thread. High-quality processed yarn with few dye spots can be obtained.

Claims (1)

The feed roller 30, the heating device 3, and the combustor 5 arranged in the downstream position of the heating device, and the thread Y arranged in the downstream of the combustor 5 with the supply roller 30. It is formed by a transfer roller 6 extending therebetween, and in the heating device 3 which surrounds the whole or part of the synthetic fiber thread which is twisted by the combustor 5 without trace, in a non-contact state. In the drawing / twisting device of thread (Y), which has passed through thread (Y) so as to draw and stretch, in the heating device (3), a resistor of the thread is arranged at a predetermined distance downstream from the inlet of the thread (Y) and the thread upstream of the resistor (Y) becomes less than the elongation tension corresponding to the temperature of the thread thread (Y) passing from the inlet of the heating device (3) between the resistor, and at the same time the tension of the thread (Y) downstream from the resistor is near the resistor. Elongation at temperature Stretching and combusting apparatus of yarn thread, characterized by the above-mentioned.

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