JPS5912770B2 - Kariyarihouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION When false twisting a thermoplastic synthetic fiber yarn, the present invention involves tilting heating zones in different directions and twisting the heating zones in opposite directions while bringing them into contact with each other at their intertwined surfaces. This invention relates to a false-twisting device that simultaneously false-twists these yarns, and includes a guide member that guides at least two or more fiber yarns through the interlaced surface thereof.

Conventionally, in the friction false twisting method or the spindle false twisting method, one yarn to be heated is supplied to a false twisting device.
In order to improve the productivity per spindle of the false twisting device, it was necessary to increase the yarn speed.

First, the present inventors discovered that the heating zones are inclined in different directions and intertwined, and that these heating zones simultaneously run in opposite directions while contacting each other at the intertwined surfaces, and that the contacting intertwined surfaces Invented a method and device for false twisting fiber yarns.

That is, the invention has a configuration as shown in FIGS. 1 and 2, in which the yarn 1 is heated by a heater (not shown), passes through the entry guide 2, and is passed to the pulleys 1 and 8. A flat endless heating belt 5 made of synthetic rubber and pulleys 1a and 8a
It passes through the intertwined surface 9 with the heating zone 6, which is a flat endless band made of synthetic rubber, and reaches the outlet guide 3.

That is, the heating zones 5 and 6 are oriented θ and θ in different directions.
', and the running surfaces are intertwined with each other in a way that they enter into each other to some extent, and as the respective drive pulleys 4 and 4a rotate in the direction of the arrow, these heating zones 5 and 6 are in contact with each other at the intertwined surfaces 9. Since they run in opposite directions (same speed but opposite directions), the yarn 1 is pinched by the intertwined surfaces 9 where the heating zones 5 and 6 are in contact, and is simultaneously false-twisted and output. It reaches the side guide 3.

FIG. 2 shows a cross section of the interlacing surface 9.

As can be seen from this figure, the double door tropicals 5 and 6 are arranged so that the intertwined surfaces 9 are in contact with each other on substantially the entire surface when the thread 1 is not passed through, and when the thread 1 is passed through, as shown in the figure. Both sides of the yarn 1 are in contact with each other.

The heating zones 5 and 6 are made of a material that will not cause smoke or softening of the surface due to excessive friction even if they are run in contact with each other, that is, synthetic rubber or the like having a relatively small surface friction coefficient is used.

The present invention is an improvement of the above-mentioned special false twisting device, which eliminates the drawbacks of the conventional method, ensures more than twice the productivity with one false twister, and produces uniformly crimped yarn. This relates to a new false twisting device that is intended to process at high speed.

Now, to explain the present invention in more detail with reference to FIG. 3, heating zones 5 and 6 are intertwined with inclinations in mutually different directions, and heating zones 5 and 6 are formed on the interlaced surface 9 formed, respectively. In the false twisting device which runs in the directions of arrows 11 and 12 and is in contact and under pressure, the yarns 1' and 1'', together with the yarn 1 to be heated, enter through guide rollers 10 and 10'. When introduced into the side guide 2, the three yarns 1, 1', 1'' are held in a pinched state at the interlacing surface 9 as the heating zones 5 and 6 run in the directions of arrows 11 and 12. Each thread is heated and at the same time each thread 1
, '1', and '1'' provide a positive feeding effect on the yarn along with false twisting.

Therefore, each yarn 1, 2, and 3 can be false-twisted at high speed and uniformly in a non-stiff state, and the productivity can be more than doubled with the same false-twisting device (in the figure, only 3 yarns can be false-twisted). 3 times as much)
There are effects that can be obtained.

Next, an embodiment according to the present invention will be shown.

EXAMPLE Three polyester filaments of 50 denier/24 filaments were fed into the false twisting apparatus described above.

The processing conditions at this time were a processing speed of vy-750 meters per minute, an automatic yarn feed rate of z = 750 meters per minute naturally obtained from the false twisting device, and a heater temperature of 240°C.
When the false twisting process was performed, each heating tension was in the range of 20 to 21 g, and the untwisting tension was also in the range of 20 to 21 g. There was almost no difference in tension between each yarn, and a uniform crimped yarn was obtained. It was done.

Therefore, in the present invention, the heating bands are inclined and entangled in different directions, and at the same time, these heating bands run in opposite directions while contacting each other at the interlaced surfaces, and the fiber yarns are In the method of false-twisting, it is a device that guides at least two or more synthetic fiber yarns to the contacting interlacing surfaces and false-twists the two or more yarns at the same time, so one false-twisting device can double or more. productivity can be ensured, and
Since there is almost no difference in tension between the heating side and the untwisting side, the effects are extremely large, such as being able to process uniform crimped yarn at high speed.

In addition, in the device of the present invention, the running surfaces of the heating belt are intertwined so that they enter into each other to some extent, and the surfaces are actively brought into contact with each other. Even if the position of the surface changes slightly, it does not affect the pinching condition of the yarn due to the deflection of the heating band.
Stable false twisting can be performed.

[Brief explanation of drawings]

Figure 1 is a front view of the interlaced part contact type false twisting device, Figure 2 is an enlarged view of the interlaced surface along the cutting line - " in Figure 1,
The figure is a partial front view of an apparatus suitable for carrying out the invention. 1.1', 1"...Fiber yarn, 2...Inlet guide, 3...Outlet guide, 4, 4a...
... Drive pulley, 5°6 ... Heating zone, 7,7
a, 8, 8a...pulley, 9...interlaced surface, 10,1α...guide roller.

Claims (1)

[Claims] 1 Equipped with heating belts arranged so as to extend in different directions and intertwine with each other, and a means for running the heating belts, and in a state where the heating belts do not pass the yarn, the intertwined surfaces of the heating belts are in contact over substantially the entire surface. A false twisting device characterized in that the false twisting device is further provided with a guide member for guiding two or more yarns through the interlacing surface.