JPS591808B2 - High speed false twisting machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in high speed false twisting machines.

More specifically, the present invention relates to the configuration and arrangement of each part in the false twisting machine.

While running a yarn made of polyamide or polyester thermoplastic fibers, a temporary high-density twist is imparted to the yarn, the heated yarn is heated, then cooled, and the yarn is twisted. It is known that if the twist is fixed by heat and then untwisted, a stretchable bulky yarn, usually called woolly yarn, which is bulky and highly elastic can be obtained.

Furthermore, when the above-mentioned stretchable bulk yarn is reheated under controlled tension or a constant elongation rate, the bulk yarn, which is usually called a modified false twisted yarn, has low residual torque, low elasticity, and excellent bulk. It is also known that high thread can be obtained.

Various types of false twisting machines or modified false twisting machines have been proposed for producing these stretchable bulk yarns or bulk yarns.

However, although the known false twisting machines and modified false twisting machines each have their own advantages, they also have drawbacks.

In particular, as yarn processing speeds have increased recently, various drawbacks have become more apparent.

For example, in Japanese Utility Model Publication No. 40-21002, a first yarn feeding device, a first yarn heating device, a false twisting device, a second yarn feeding device, a second yarn feeding device, and a second yarn feeding device are arranged on a first frame in order from the bottom. A modified false twisting machine is shown in which a yarn heating device and a third yarn feeding device are arranged almost in a straight line.

This false twisting machine has a yarn processing speed of at most 200 m/m1y.
Up to about r, it showed excellent properties and was widely used.

However, when the yarn processing speed increases to 400 m1 m1n or more, the first and second yarn heating devices in the false twisting machine not only become longer, but also become intermediate between the first yarn heating device and the false twisting device. The thread cooling device is also long and the machine is very tall, making it difficult to store it in a normal building.

On the other hand, in order to improve the above-mentioned drawbacks, Japanese Utility Model Publication No. 48-102356 discloses a structure in which the building is made into a two-story structure, and the devices of the above-mentioned parts are arranged almost in a straight line from the top to the bottom. A two-story stretching false twisting machine has been proposed.

However, although the two-story type allows the thread traveling path to be maintained in a substantially straight line, it is necessary to sacrifice operability in that threading work becomes difficult.

Further, as another known example, there are Japanese Patent Application Laid-Open No. 52-31150 and Japanese Patent Application Laid-Open No. 52-114757, both of which provide heating between the first yarn heating device and the cooling device immediately after it. It is considered that the existing yarn is bent 120 to 1500 times and the machine height is lowered.

However, since the yarn is bent through the running yarn guide, it not only prevents the twist from propagating onto the yarn heating device, but also has the disadvantage that the yarn is likely to be damaged due to frictional resistance at the bending point.

Furthermore, Japanese Patent Application Laid-Open No. 52-31149 discloses a false twisting machine in which a first yarn heating device, a cooling device, a false twisting device, and a second yarn feeding device are arranged in a substantially linear manner in this order. It is shown.

This false twisting machine does not have anything that inhibits the propagation of the twist onto the yarn heating device, but the yarn is bent approximately 180° between the first yarn feeding device and the first yarn heating device. It is being

Therefore, when stretching and false twisting are carried out at the same time, there is an inherent drawback that non-uniform stretching tends to occur at bent portions.

Furthermore, if an attempt is made to equip the first yarn heating device and cooling device with sufficient length, a huge frame extending in the horizontal direction is required, resulting in a large floor area.

The purpose of the present invention is to improve the defects of the prior art as described above, to sufficiently propagate the twist to the traveling yarn passing over the first yarn heating device, and to prevent damage to the yarn, thereby increasing the machine height. It is an object of the present invention to provide a high-speed false twisting machine that has a low profile and requires less floor space for installation.

In order to achieve the above object, the present invention consists of the following configuration.

That is, in a high-speed false twisting machine that has two yarn heating devices and one false twisting device as main parts, the first yarn feeding device, the first yarn heating device, the yarn cooling device, the false twisting device, and the first a processing section in which the second yarn feeding devices are arranged in this order in a substantially straight line from the top to the bottom; It consists of a processing section in which a feeding device, a second yarn heating device, and a fourth yarn feeding device are arranged in this order downward from one side, and the second yarn feeding device and the third yarn feeding device A high-speed false twisting machine is characterized in that a yarn guide is provided between the two yarns to guide the yarn folded back from the second yarn feeding device to the operation surface side from the false twisting device.

The present invention will be explained in more detail based on embodiments shown in the drawings.

FIG. 1 is a cross-sectional view showing the main parts of a high-speed false twisting machine according to the present invention.

In FIG. 1, a plurality of supply system packages 1 are suspended on a supply system creel 2 at appropriate intervals.

The supply system 3 pulled out of the supply package 1 runs approximately horizontally and enters the first framework 4 .

This first framework 4 has processing sections A corresponding to the number of supply systems 1.
The first yarn feeding device 5
, first yarn heating device 6, yarn cooling device 7, false twisting device 8
, the second yarn feeding device 9 is arranged so that the yarn travel path is approximately straight.

By passing through each of these devices in the above arrangement order, the supply system 3 becomes a stretchable woolen yarn 10 having bulkiness and stretchability, so-called woolly yarn.

A workbench 11 is provided in front of the lower part of the first framework 4, and when viewed from the workbench 11, each part forming the processing section B is located behind the yarn cooling device 7 and the false twisting device 8, a third yarn feeding device 12, The second yarn heating device 13 and the fourth yarn feeding device 14 are arranged in this order from top to bottom.

The stretchable umbrellas 10 that have come out of the second yarn feeding device 9 are passed through in the above order and heat treated under controlled tension to obtain umbrellas 15.

The Casa High School graduate 15 who came out of the fourth thread feeding device 14 is placed on the workbench 1.
1, and is guided by the second framework 16,
The package 23 is wound up by a known winding device 17 .

The present invention provides a yarn guide between the second yarn feeding device 9 and the third yarn feeding device 12 that guides the yarn folded back from the second yarn feeding device to the operation surface side from the false twisting device 8. The limit is 20.

False twisting devices are usually driven by an endless belt,
If the yarn that has passed through the false twisting device 8 is passed through the rear of the false twisting device 8 and directed upward, it is necessary to straddle this endless belt when threading, which makes threading difficult. However, the thread guide 20 of the present invention solves this problem of thread hookability.

The high-speed false twisting machine shown in FIG.
The structure is such that the speed difference between the two can be arbitrarily changed so that the tension can be adjusted from a relaxed state to a strong tension state to the stretchable umbrella high school graduate 10 sent out from the container.

Of course, the first yarn feeding device 5 and the second yarn feeding device 90
The speed difference between the two can be changed arbitrarily so that false twisting can be carried out at the same time as stretching.

Next, a procedure for starting the operation of the high-speed false twisting machine according to the present invention shown in FIG. 1 will be explained.

FIGS. 2 to 5 are conceptual diagrams for explaining the procedure for starting the operation of the high-speed false twisting machine shown in FIG. 1.

Fig. 2 is a conceptual diagram of the supply system 3 passing through each unit device of the stretchable umbrella highly processed section A.The supply system 3 has passed through each section and has been threaded to the thread suction pulp 21, but the thread is still threaded. It has not started running.

In the embodiment shown in FIG. 2, the first yarn feeding device 5 consists of a rotating roller 5' and an apron pelt, which are separated from each other.

The second yarn feeding device 9 has a driving roller 9' and a nip roller r.
As with the first yarn feeding device 5, both are in a state separated from each other.

In this case, it is desirable that the supply system 3 is cut off from contact with the yarn heating device 6 and the cooling device γ by the guides 18 and 19.

Further, it is desirable that the false twisting device 8 stops its rotation, or that the supply system 3 cuts off contact with the false twisting device 8.

The supply system 8 is kept by a guide 20 so as not to come into contact with the same supply system 3 coming down from above, and the supply system 3 sent out from the second yarn feeding device 9 is given a false twist. After the yarn is folded back toward the operation surface side of the device 8, it is sucked into a yarn suction pipe 21 provided between the cooling device 7 and the third yarn feeding device 120.

From this state, first the second yarn feeding device 9 starts the short yarn, then the false twisting device 8 applies false twist to the short yarn, the first yarn feeding device 5 operates to apply tension, and the guide 1
8. The state shown in FIG. 3 is achieved by heating the yarn and joining the yarn to the cooling device by performing the operations in 8.19 in this order or by performing these operations almost simultaneously.

That is, in FIG. 3, the stretchable umbrella 10 is continuously sucked into the yarn suction pipe 21.

From this state, the stretchable umbrella 10 is threaded onto the third thread feeding device 12 using a thread guide (not shown).

At this time, the third yarn feeding device 12
It is preferable to bring the apron 1γ into contact with the apron 1γ as shown in the figure, so that it can be rotated and threaded.

FIG. 4 is a conceptual diagram of the state in which threading to the third thread feeding device 12 has been completed.

FIG. 5 shows the yarn being moved from the state shown in FIG. 4 to the second yarn heating device 13 and the fourth yarn feeding device 14 using a known hand-held suction device 22 in a method conventionally known to those skilled in the art. This shows the state in which the thread is passed through.

After that, operate the hand-held suction device 22 and take up the winding device 17.
Wrap the thread around the thread to complete the threading operation.

This operation is performed for the entire supply system of the high-speed false twisting machine to complete the start of operation.

In order to easily and reliably carry out the above-mentioned threading operation, it is preferable to provide the thread suction pipe 21 behind the cooling device 7 and near the third thread feeding device 12.

By providing the yarn suction pipe 21 in this manner, the threading operation can be performed in two stages, and when threading a long path, each operation can be performed reliably and stably.

In the above embodiment, the first yarn feeding device, the third yarn feeding device, and the fourth yarn feeding device are feeding devices using an apron belt, and the second yarn feeding device is a feeding device using a nip roller. However, the present invention is not limited to this, and other known methods may also be used.

Further, the supply system creel 2 is mounted on the winding device 17 on the second framework.
Although an example has been shown in which it is placed above, the present invention is not limited to this.

If building space permits, it is also possible to install it above the first framework.

The high speed false twisting machine according to the present invention has the following features by adopting the above arrangement.

First, the various parts are arranged so that the yarn running path is almost straight from the first yarn feeding device 5 to the second yarn feeding device 9 (the highly elastic and highly processed part A is used). In addition, the false twist imparted to the running yarn by the false twisting device 8 is smoothly propagated to the yarn running on the first yarn heating device 6, and the twist can be sufficiently heat-set.

Furthermore, since there is no part that bends the yarn in a false-twisted state at high speed, there is nothing to impede the propagation of the twist, so there is less damage to the yarn due to friction, which reduces the strength of the resulting bulky yarn, and reduces fuzz and fuzz.
There is also less Ω generation such as white powder.

On the other hand, the third yarn feeding device 12, the second heating device 13, and the fourth yarn feeding device 14 that constitute the bulky processing section B
Since the yarns are arranged from the top to the bottom so that the yarn running path is approximately straight, it is possible to heat set the stretchable bulk yarn under low tension.

Moreover, since the stretchable bulk-high processing section A and the bulk-high processing section B are arranged in parallel, the height of the machine is significantly reduced compared to the conventional modified false twisting machine seen in Japanese Utility Model Application No. 48-102356. Next, the second yarn feeding device 9 is provided directly below the false twisting device 8.

If this part were to be used as a normal yarn bending guide, the untwisted elastic bulky yarn would come into frictional contact with this guide at high speed, resulting in a large increase in tension and significant damage to the yarn, leading to the generation of fuzz.

Since the false twisting machine according to the present invention bends the yarn through the yarn feeding device, the above-mentioned drawbacks do not occur at all.

In addition, when producing stretchable bulk yarn using the false twisting machine according to the present invention, the traveling yarn is immediately passed from the second yarn feeding device 9 under the workbench to the winding device 17. It is also possible to guide

At this time, for the purpose of tension adjustment, the fourth yarn feeding device 1
4 can also be passed.

In this way, by using a modified false twisting machine equipped with two known yarn heating devices, the length of the yarn traveling path can be increased without passing through a wasteful long yarn traveling path as in the case of manufacturing stretchable bulky yarn. can be minimized.

Furthermore, a second yarn feeding device 9 and a third yarn feeding device 120
If the yarn feeding speed difference between the two yarns can be arbitrarily changed, the tension of the stretchable bulky yarn sent out from the second yarn feeding device 9 can be adjusted over a wide range from a relaxed state to a strongly tensioned state.

Conventional high-speed false twisting machines do not have the above functions.

The high-speed false twisting machine according to the present invention can
By applying relaxation or tension to the stretchable bulk yarn before being supplied to the second yarn heating device according to the processing conditions, the crimp of the stretchable bulk yarn can be sufficiently developed and manifested. .

As described above, the stretchable bulky yarn with fully exposed crimps is supplied to the second yarn heating device, and the bulky yarn obtained has fine crimps and high bulkiness that could not be obtained with conventional devices. A high-quality Kasa Takaya thread with rich properties can be obtained.

As described above, the high-speed false twisting machine according to the present invention sufficiently propagates twist to the running yarn passing over the first yarn heating device,
In addition, the height of the machine is low (
The installation floor space is small, so it is easy to operate.

In addition, yarn feeding devices are installed at four locations, and the elastic bulk yarn can be fully crimped and exposed before being supplied to the second yarn heating device, making it possible to obtain high quality bulk yarn. .

Furthermore, even when obtaining stretchable false twisted yarn, excellent functions and effects such as being able to minimize the traveling path of the yarn can be achieved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the main parts of a high-speed false twisting machine according to the present invention. 2 to 5 are conceptual diagrams for explaining the procedure for threading the machine shown in FIG. 1. A: High elastic bulk processing section, B: High bulk processing section, 1: Supply system package, 2: Supply system creel, 3: Supply system, 4:
First framework, 5: First yarn feeding device, 6: First yarn heating device, 7: Cooling device, 8: False twisting device, 9: Second yarn feeding device, 10: Wooly yarn, 11 : Workbench, 12: Third yarn feeding device, 13: Second yarn heating device, 14: Fourth
Yarn feeding device, 15: Modifying yarn, 17: Winding device, 21: Yarn suction pipe, 23: Package.

Claims (1)

[Claims] A high-speed false twisting machine that has 12 yarn heating devices and one false twisting device as main parts includes a first yarn feeding device, a first yarn heating device, a yarn cooling device, a false twisting device, and a second yarn heating device. A processing section in which the yarn feeding devices are arranged in this order on a substantially straight line from the top to the bottom; It consists of a processing section in which a feeding device, a second yarn heating device, and a fourth yarn feeding device are arranged in this order from top to bottom, and the second yarn feeding device and the third yarn feeding device are In between, the second
A high-speed false-twisting machine characterized by being provided with a yarn guide that guides the yarn folded back from the yarn feeding device to the operation surface side from the false-twisting device.