JPS5843498B2 - How to thread the entanglement processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the threading method of a device that uses a jet of fluid, particularly air, to perform an entangling treatment on multi-filament yarn.

Techniques for entangling multifilament yarns, particularly multifilaments, using turbulent flow of fluid species are well known.

Generally, multifilament yarn is obtained in an unfocused state,
If left as is, many problems will occur during the weaving and weaving process or its preparation process, so twisting and/or gluing is necessary.

A method of imparting convergence by applying an oil agent, etc. has been adopted.

However, this method has low productivity and requires a lot of labor, so in recent years, as an alternative to twisting and gluing, technology has been developed to bundle multifilament yarns by intertwining single fibers with each other. Particularly, some methods of interlacing treatment during the stretching process or the false twisting process are about to be put into practical use.

The fluid-based entanglement treatment method is significantly superior to other methods in that it can be performed at high speed and continuously.

This fluid entanglement processing device is used for the spinning process, the drawing process, and the drawing process as described above.
It is used in false twisting processes, etc., but the problem when starting these processes is that it is difficult to thread the yarn into the fluid entanglement processing device.

Conventional thread hooking is performed by stopping the supply of compressed air to the fluid entanglement processing device, and passing the multi-filament yarn through a slit from the side of the device leading to the yarn path and entanglement processing chamber. is inserted into.

However, when the jet of compressed air is temporarily stopped in this way, various drawbacks occur.

The first drawback is that the multifilament yarn does not run stably.

In other words, since the entanglement process is normally performed in a substantially relaxed state, when the jet of compressed air is stopped, the entire yarn becomes relaxed, and it becomes entangled with the rollers, guides, or fluid entanglement processing device, resulting in yarn breakage at the start. become.

A second problem is that it is necessary to provide a fluid opening/closing device between the fluid entanglement processing device and the source of fluid, particularly compressed air, and the device, which increases the cost of the device.

The present invention was obtained in order to eliminate the drawbacks of the conventional threading method, and an object of the present invention is to provide a method for threading without stopping the supply of fluid to the fluid entanglement processing device. In order to achieve this purpose, the multi-filament yarn is brought into contact with a guide or drive roller located downstream of the fluid entanglement processing device to apply tension to the yarn and stabilize the yarn path. This feature is characterized in that the thread is hung on the fluid entanglement processing device.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic diagram showing a fluid entanglement treatment process for multifilament yarn, in which 1 and 5 are yarn feeding devices, for example, drive rollers;
is a fluid entanglement processing device, and 2 and 4 are guides.

There are various types of fluid entanglement processing devices, and FIG. 2 shows one example, which includes a base 31 and a main body 32.
The main body 32 has a processing chamber 33, a thread insertion slit 34 communicating with the processing chamber 33 is provided, and the base 31 is provided with a fluid supply hole 35.

3 to 6 are cross-sectional views showing another fluid entanglement processing device.

In FIG. 3, a high-pressure fluid chamber 36 is provided in the base 31, and a fluid supply hole 35 is communicated with the high-pressure fluid chamber 36.

In FIG. 4, fluid supply holes 35 are opened in both side walls of a processing chamber 330, with the aim of increasing the entanglement processing effect.

In FIG. 5, a processing chamber 33 and a thread insertion slit 34 are provided integrally, and the processing chamber 33 has a slit shape.

FIG. 6 shows a modification of the device shown in FIG. 3, in which the processing chamber 33
has a rectangular cross section.

In the present invention, the first method for applying tension to the yarn when threading the yarn to the fluid entanglement processing device 3 exemplified above is as follows.
In the process shown in the figure, it is important to carry out the process at least after the thread is brought into contact with the guide 4.

As this guide, what is necessary is just to utilize what is generally known as a guide member, such as a driven roll and a fixed pin.

Furthermore, when operating the thread hook, it is sufficient to continue supplying compressed air to the fluid entanglement processing device 3 in a steady state or a state close to this. The operation of stopping the supply of is completely unnecessary.

In the process of entangling multi-filament yarns using a fluid entanglement treatment device, since the yarn is transported in a relaxed state, there is a marked tendency for the yarn to get caught in the entrance and exit of the fluid entanglement treatment device. The thread wound around the upstream roller 1, etc., making it difficult to thread the thread.

However, according to the present invention, the yarn is brought into contact with drive rolls and guides on the downstream side of the fluid entanglement treatment device to apply tension to the yarn, and then the yarn is hooked to the fluid entanglement treatment device.
It is possible to prevent the thread from getting caught or wrapped around the various members.

When threading in the fluid entanglement process, the thread is often suctioned with a suction gun or the like before threading, and the present invention can be particularly effectively utilized in such cases.

Furthermore, when processing crimped yarns, the above-mentioned yarn catching phenomenon tends to occur frequently, but according to the present invention, this phenomenon can be almost completely prevented. This is effective when performing fluid entanglement treatment during the process.

Furthermore, when performing fluid entanglement treatment uniformly on a multifilament yarn, the yarn is brought into contact with the yarn entrance and exit port of the fluid entanglement treatment device to maintain a specific position relative to the fluid jet port.
In such a case, the present invention can be implemented particularly effectively.

Example When threading a multifilament yarn Y having a thickness of 255 denier and 48 filaments into the device shown in FIG. 1, after bringing the yarn Y into contact with the guide 4, a fluid having a cross section shown in FIG. When the yarn Y was guided into the processing chamber 33 through the yarn insertion slit 34 of the fluid entanglement processing device 3 which was spouting (compressed air), the yarn was able to travel without being wound around anywhere.

For comparison, when the thread Y is threaded onto the fluid entanglement processing device 3 without contacting the guide 4, the thread Y winds backward around the drive row 21, making it impossible to thread the thread. there were.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the fluid entanglement treatment process, Figures 2 to 6
The figures are cross-sectional views of various fluid entanglement processing devices. 1.5... Drive roller, 2, 4... Guide, 3... Fluid entanglement processing device, 31...
... Base, 32 ... Main body, 33 ... Processing chamber, 34 ... Thread insertion slit, 35 ...
・Fluid supply hole.

Claims (1)

[Claims] 1. When hanging a running yarn with a fluid ejected through an entanglement processing device provided by connecting a slit for thread insertion to a processing chamber, the yarn is placed on a guide or drive roller located downstream of the entanglement processing device. 1. A method for threading an entanglement processing device, which comprises: bringing a thread into contact with the entanglement processing device, and then threading the entanglement processing device.