JP2001295151A - Yarn heating method for drawing-false twist texturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn heating method highly efficiently achieving a speed-up of traveling of the finished yarn without lengthening a heater of a drawing-false twist texturing machine. SOLUTION: In this yarn heating method in a drawing-false twist texturing machine which is equipped with the first heater H1 for forming a yarn heating space in the length direction at the upstream side of a twister NT and heats the yarn Y to be treated by the first heater, the yarn heating method in the drawing-false twist texturing machine is characterized as the yarn to be treated is preheated by the first heater and then reciprocated for heat-treatmeat of the yarn in the first heater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for heating a yarn in a draw false twisting machine, and in particular, is proposed as one which contributes to space saving of an installation space of a device and reduction of power consumption. And a method for heating a yarn of a draw false twisting machine.

[0002]

2. Description of the Related Art As is well known, a draw false twisting machine applies texture processing to a melt-spun synthetic fiber yarn. As shown in FIG.
Filament yarn Y unwound from a yarn supply package PS supported on a yarn supply creel stand 32 provided along
To the first feed roller F1 via the primary heater H1 for texturing, the cooling plate 33 and the nip twister NT, and then the second feed roller F1.
In the process leading to 2, the filament yarn Y is false-twisted and heat-set while being stretched, bulk processing is applied to the filament yarn Y, and the secondary yarn is passed through a secondary heater H2 for setting and a third feed roller F3. It is designed to be wound around a winding package PW.

The configuration of the primary heater H1 for texturing in a conventional draw false twister will be described with reference to FIGS. 7 and 8. FIG. FIG. 7 is a schematic sectional view of a primary heater in a conventional draw false twister, and FIG.
It is a schematic side view which shows the specific structural example of the conventional draw false twisting machine. In this conventional example, the primary heater H1 for texturing is provided with a yarn running path 36 that opens outward by a yarn insertion port 35 extending in the longitudinal direction, and the yarn Y to be processed is provided. The yarn is inserted into the yarn traveling path 36 from the side of the yarn insertion port 35 and travels along the yarn traveling path 36 to apply heat to the yarn Y to be processed during traveling. The above-mentioned primary heater H1 is set at a considerably high position as shown in FIG. 8 due to the overall design of the draw false twisting machine. Therefore, a shifter is used as a means for passing the filament yarn Y through the yarn traveling path in the primary heater H1.

[0004] The primary heater H for texturing
1 is a long heating plate 37 having a rectangular cross section arranged at the center.
A first heat insulating plate 38 and a second heat insulating plate 39 in a vertical state located on both left and right sides of the heating plate 37 with an interval, and a third heat insulating plate 40 in a horizontal state positioned above and below the heating plate 37 And having a fourth heat insulating plate 41 in a vertical state,
Yarn running path 3 opened outward by yarn insertion ports 35 extending in the longitudinal direction on both left and right sides of heating plate 37.
6, 36 are formed. A heating element 42 is embedded inside the heating plate 37. The heating plate 37 and the heat insulating plates 38, 39, 40, 41 are assembled by an appropriate cover member.

[0005] The primary heater H1 is connected to the heating plate 37.
A yarn running guide member G is provided between the heat-insulating plates 38 and 39 located on the left and right sides. The yarn traveling guide member G
Is composed of a roller-shaped guide having a V-groove on the peripheral surface, made of ceramic in order to improve the abrasion resistance to the yarn, and formed in a thin hollow so as to withstand sudden temperature changes. ing.

[0006]

According to the false twisting operation by the conventional draw false twisting machine, the speed of the processed yarn is increased,
There is a need for highly efficient heater means. Conventionally,
As a measure for increasing the efficiency of the heater means, a method of increasing the length of the primary heater in the yarn traveling direction has been adopted. However, as shown in FIG. 8, since the primary heater is installed in an inclined state with respect to the machine base, the machine size of the stretch false twist device increases with the lengthening of the primary heater, In addition, there is a problem that the installation space increases.

Therefore, the present invention has made it possible to respond efficiently to a high-speed running of a processed yarn without increasing the length of the heater means in the above-described draw false twisting machine. An object of the present invention is to provide a yarn heating method in a draw false twisting machine.

[0008]

In order to achieve the above object, the present invention specifically comprises a first heater means for forming a yarn heating space along a longitudinal direction on an upstream side of a twister. A yarn heating method in a draw false twisting machine, wherein the yarn to be treated is heated by the first heater means, wherein the yarn to be treated is pre-heated by the first heater means and then heated. The present invention constitutes a yarn heating method of a draw false twisting machine in which the yarn to be processed is reciprocated through the first heater means for processing.

Further, the present invention relates to a yarn in a draw false twisting machine having a second heater for setting downstream of the twister, wherein the yarn to be processed is heated by the second heater. In the method for heating a filament, the filament to be treated is preheat-treated by the second heater means, and then the filament to be treated is reciprocated through the second heater means for heat treatment. It also constitutes the yarn heating method of the false twisting machine.

Further, in the present invention, each of the heater means constitutes a yarn heating method of a draw false twisting machine which is a non-contact heater.

Further, in the present invention, each of the heater means constitutes a yarn heating method of a draw false twisting machine which is a contact heater.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a yarn heating device in a draw false twisting machine according to the present invention will be described in detail based on a specific embodiment shown in the drawings. FIG. 1 shows a specific example of a draw false twisting machine responding to the yarn heating method according to the present invention, and is a side view schematically showing the whole of the draw false twisting machine. Further, FIG. 2 shows a yarn heating method in a draw false twisting machine according to the present invention, showing only a main part of a yarn heating device responding to the yarn heating method. FIG. 3 is a schematic side view showing an example of a device configured so that a yarn Y passes twice, and FIG.
2 shows only a main part of the yarn heating device as in FIG. 2, and is an example of a device configured so that the yarn to be processed passes twice through both the primary heater H1 and the secondary heater H2. It is a schematic side view which shows.

FIG. 4 is a schematic side view showing the internal structure of a slit-type non-contact heater. FIG. 5 is a tube-type non-contact heater, and a threader for the tube-type non-contact heater. FIG. 5A
FIG. 5B is a schematic side view showing a state immediately before threading in the tubular non-contact heater, and FIG. 5B is a schematic side view showing a state in which threading has been completed in the tubular non-contact heater. FIG. 5C is a view taken along the line ZZ in FIG. 5A.
It is a schematic ZZ line sectional view shown in a section along a line. On the other hand, FIG. 6 is a schematic cross-sectional view of the primary heater H1 taken along a line XX in FIG.

First, referring to FIG. 1, the overall configuration of a draw false twister to which the present invention is applied will be described. In FIG. 1, the drawing false twisting machine is configured so as to be symmetrically juxtaposed with respect to a center line CL, and is composed of a plurality of stretching false twisting machines arranged in the thickness direction of the paper. The draw false twister guides a filament yarn Y unwound from a yarn supply package PS supported by a yarn supply creel stand 2 provided along the machine base 1 to a first feed roller F1, and guides the guide roller 21 to a twist. From the one end H1a to the other end H of the texturing heater means H1 via the stop guide 22.
1b, and from the other end H1b of the texturing heater means H1 to one end H1a via a guide roller 23 and a ceramic guide 24 for changing the running direction. A lid member 25 for improving the heating efficiency is combined with the other end side H1b of the heater means H1.

According to the above-described configuration, the filament yarn Y passes through the inside of the texturing heater means H1 twice, and the one end side H of the heater means H1.
Preheating is performed in the course of passing from 1a to the other end H1b, and main heating processing for texturing is performed in the course of passing from one end H1a to the other end H1b of the heater means H1.

After passing through the heater means H1 twice, the filament yarn Y is guided to the second feed roller F2 via the cooling plate 3 and the nip twister NT. In this device, the filament yarn Y
Are stretched and false-twisted and heat-set to apply bulk processing to the filament yarn Y, and further wound up on a winding package PW in the winder 4 via a setting heater H2 and a third feed roller F3. It was done. In the figure, reference numeral WS indicates a work space for an operator.

In particular, according to the embodiment shown in FIG. 3 of the present invention, in addition to the above-described structure, the setting heater H2 has the same structure as the heater means H1. Y can pass through the heater H2 twice. That is,
According to this example, the filament yarn Y guided to the second feed roller F2 travels from one end H2a of the heater H2 to the other end H2b, and is provided outside the other end H2b of the heater H2. 3 through the feed roller F3 and the direction changing guide roller 26, the other end H2 of the heater H2.
b toward one end H2a, and guide rollers 27, 2 provided outside the one end H2a of the heater H2.
Winding package P in the winder 4 via 8, 29
It is configured to be wound around W.

In the present invention, an example of a specific structure of the texturing heater means H1 is shown in FIGS. The heater means H1 according to this example includes a long heating plate 11 having a rectangular cross section arranged at the center, a first heat insulating plate 12 and a second heat insulating plate 12 which are located on both left and right sides of the heating plate 11 at an interval. , And a third heat insulating plate 14 in a horizontal state and a fourth heat insulating plate 15 in a vertical state positioned above and below the heating plate 11. Yarn running paths 18 and 19 which are opened outward are formed by the extending yarn insertion ports 16 and 17. A heating element 20 is embedded inside the heating plate 11. The heating plate 11 and the heat insulating plate are assembled by an appropriate cover member.

The heater means H1 includes the heating plate 11
And a heat-insulating plate 13 are provided with a yarn running guide member G. The yarn traveling guide member G is formed of a roller-shaped guide having a V-shaped groove Ga on its peripheral surface, and is made of ceramic in order to improve abrasion resistance to the traveling yarn, so that it can withstand sudden temperature changes. A thin hollow member is used.

Further, a specific configuration example of the heater means H1 will be described with reference to FIG. As shown in FIG. 4, in the texturing heater means H1, during the pre-heating process of the filament yarn Y (during the process of passing from one end H1a of the heater means H1 to the other end H1b), the twisting is performed. By setting and positioning the stop guide 22 and the guide roller 23, the lower dimension D1 and the upper dimension D2 of the filament yarn Y are set, whereby the conditions for the pre-heat treatment of the filament yarn Y by the heating plate 11 are determined. .

In order to obtain the same yarn temperature at the outlet side of the heater means H1, the heater means H1 is different from the conventional one in which the yarn to be processed is passed through the heater means H1 once. The length L in the yarn running direction can be reduced. The shortening of the heater means H1 is an extremely effective factor for reducing power consumption and installation space.

In the present invention, the heater means H1
May be a slit type non-contact heater as shown in FIG. 4 or a tube type non-contact heater as shown in FIG. This tube type non-contact heater is
As shown in FIG. 5C, it is composed of a heat insulating material layer 9 and a heater body 10. When the heater means H1 is a tube-type non-contact heater, threading of the tube-type non-contact heater can be performed very easily by the procedure shown in FIGS. 5A and 5B. As shown in FIG. 5A, the yarn Y to be processed is made to stand by at one end side H1a of the heater means H1, a hooking guide 30 is inserted from the other end side H1b of the heater means H1, and the yarn guide Y is covered by the hooking guide 30. The processing yarn Y is captured and the processing target yarn Y is heated by the heater means H.
The thread is hooked on the guide roll 23 on the other end side H1b of 1 to complete the thread hooking operation. Further, a contact type heater can be applied instead of the non-contact heater.

[0023]

The yarn heating method in the draw false twisting machine according to the present invention having the above-described structure includes the following steps.
The point that the length of the primary heater H1 can be shortened in the point that the yarn to be processed is passed twice, whereby the power consumption can be reduced and the installation space can be reduced. It can be said that this works extremely effectively.

[Brief description of the drawings]

FIG. 1 shows a specific example of a draw false twisting machine responding to the yarn heating method according to the present invention, and is a side view schematically showing the entire structure of the draw false twisting machine. It is.

FIG. 2 is a view showing a main part of a yarn heating device responding to the yarn heating method in the draw false twisting machine according to the present invention. It is a schematic side view showing an example of a device constituted so that a processing thread may pass twice.

FIG. 3 shows only the main part of the yarn heating device as in FIG. 2, and the yarn to be processed passes twice through both the primary heater H1 and the secondary heater H2. It is a schematic side view which shows the example of an apparatus comprised in this way.

FIG. 4 is a schematic side view showing an internal structure of a slit-type non-contact heater in the yarn heating method in the draw false twisting machine according to the present invention.

FIG. 5 is a tube type non-contact heater,
FIG. 5A is a schematic side view showing a state immediately before threading is performed in the tube-type non-contact heater, and FIG.
FIG. 5B is a schematic side view showing a state in which threading has been completed in the tube-type non-contact heater, and FIG.
FIG. 2 is a schematic cross-sectional view showing a cross section taken along the line ZZ in FIG.

FIG. 6 is a schematic sectional view of the primary heater H1 taken along a line XX in FIG. 4;

FIG. 7 is a schematic cross-sectional view of a primary heater in a conventional draw false twister.

FIG. 8 is a schematic side view showing a specific configuration example of a conventional draw false twister.

[Explanation of symbols]

 Y filament yarn H1 texturing heater means H2 setting heater means NT nip twister 1 machine stand 2 yarn feed creel stand 3 cooling plate 4 winder F1 first feed roller F2 second feed roller F3 third feed roller 16 , 17 Thread insertion port 18, 19 Thread travel path G Thread travel guide member Ga V groove of thread travel guide member

Claims (4)

[Claims] 1. A drawing device comprising a first heater means for forming a yarn heating space along a longitudinal direction on an upstream side of a twister, wherein the first heater means heats the yarn to be processed. In the yarn heating method of the false twisting machine, after the yarn to be treated is preheat-treated by the first heater means, the yarn to be treated is reciprocated into the first heater means for heat treatment. A yarn heating method for a draw false twisting machine, characterized in that: 2. A method for heating a yarn in a draw false twisting machine, comprising a second heater for setting on the downstream side of the twister, wherein the yarn to be processed is heated by the second heater. The yarn to be treated is preheat-treated by the second heater means, and then the yarn to be treated is reciprocated through the second heater means for heat treatment. A yarn heating method for the draw false twisting machine according to claim 1. 3. The yarn heating method for a draw false twisting machine according to claim 1, wherein each of the heater means is a non-contact heater. 4. The yarn heating method for a draw false twisting machine according to claim 1, wherein each of the heater means is a contact heater.