JPS60197568A - Method of taking up pitch fiber - Google Patents

Abstract

PURPOSE:To permit rapid non-fusion process to improve quality and efficiency of operation by taking up fiber spun from a spinning nozzle directly around a bobbin axially reciprocating while rotating about the longitudinal axis. CONSTITUTION:Fiber spun from a spinning nozzle 1 is conducted directly to a bobbin 4 without a conventional traverse guide 2 so that the bobbin itself is rotated about the longitudinal center axis while traversing along the longitudinal center axis to take up the fiber. Here, the traverse speed in the reciprocation along the longitudinal center axis is set to 2-100mm., preferably 5-60mm. per one revolution of the bobbin to achieve non-fusion process without needing unwinding the fiber to other bobbins or the like. Thus, since spun fiber is not rubbed by a means such as traverse guide so that the high quality fiber can be efficiently produced without any fluffing.

Description

[Detailed Description of the Invention] In particular, pitch af can be directly infusible treated with pitch fibers wound around a bobbin.
This relates to a method of winding a jt.

Recently, carbon fibers having high strength and high modulus of elasticity have attracted attention; with the expansion of their uses, mass production of carbon fibers has been desired. One of the problems that must be solved in mass production of carbon fiber is how to wind the pitch fiber spun from carbonaceous pitch at high speed. One problem is how to improve the efficiency of the infusibility treatment of spun pitch fibers.

In the conventional pitch fiber winding method, as shown in FIG. 1, when the pitch fiber 2 spun from the spinning nozzle 1 is wound onto the bobbin 4, the bobbin 4 is simply rotated by a motor M. A so-called yarn traverse method was adopted in which the pitch fiber 2 is traversed in the longitudinal direction of the bobbin 4 and wound by a traverse guide (rubber scoop cam unit) 6.

In such a conventional winding method using the yarn traverse method, fibers such as pitch fibers, which are extremely brittle and have low tensile strength, are directly rubbed by the traverse guide 6, resulting in the yarn becoming fluffed, scratched, or causing yarn breakage. This occurred frequently, causing problems in terms of fiber quality and work efficiency.

Furthermore, in the conventional fiber winding method using the thread traverse method, it takes time to thread the thread onto the traverse guide 6, which actually has an extremely complicated structure, and sometimes the thread may break during the work. Occasionally, skilled workers were required. Furthermore, even if the threading work was done skillfully, oil from the traverse guide 6 could adhere to the thread or wrap around the guide rollers of the traverse guide B, causing the thread to break. . Furthermore, in the conventional device, the bobbin 4 and the traverse guide 6 are installed close to each other, and it is necessary to move the traverse guide away each time the thread is threaded or when the bobbin is attached or detached. This caused the situation to worsen.

Furthermore, in the past, even if the bobbin was wound using the above method, it would be necessary to rewind it onto another bobbin or the equivalent for the infusibility treatment, which made the work complicated and the need for such rewinding. There was a problem with thread breakage during work.

The present invention provides a pitch fiber winding method which solves the various drawbacks of the conventional pitch fiber winding method using the yarn traverse method and which can quickly carry out the infusibility treatment.

As shown in FIG. 2, the present invention allows the fibers spun from a spinning nozzle 1 to be guided directly to a bobbin 4 without having a conventional traverse guide 2, and the bobbin itself is guided around the longitudinal central axis. This is a method for winding up fibers, characterized in that the fibers are wound by rotating the fibers and causing traverse, that is, reciprocating motion along the longitudinal center axis direction. Further, the present invention provides a traverse speed of 2 to 10 per revolution of the bobbin during reciprocating motion along the longitudinal central axis of the bobbin.
It is characterized by a range of 0 mrrL, preferably 5 to 60 rlLrn. It has been found that by winding fibers with a pitch of 1 m onto a bobbin at such a traverse speed, infusibility treatment can be effectively achieved without the need for rewinding onto other bobbins.

In the fiber winding method according to the present invention configured as described above, since the spun fibers are not rubbed by a means such as a traverse guide, the fibers are not fuzzed or damaged. Alternatively, it has the effect that high quality fibers can be efficiently produced without causing yarn breakage, and the effect that the infusibility treatment can be performed quickly.

Furthermore, according to the method according to the present invention which adopts the so-called bobbin traverse method as described above, multifilaments such as pitch fibers can be obtained by simply applying oil using a converging machine, and can also be processed by infusible treatment. It becomes possible to do the following. Furthermore, in the present invention, as described above, the multifilament does not directly rub against the traverse guide or the like.

This method has the advantage that the winding speed can be considerably increased compared to conventional methods, and the production amount of pitch fibers can be dramatically increased.

The present inventors have developed a multifilament (thread diameter 7 to 10μ,
As a result of an experiment using 150 pitch fibers,
The present invention provides a bobbin traverse speed of 2 to 100rILWL.
It has been found that this can be achieved very effectively within the range of /1 revolution and a bobbin winding speed of 200 to 2000 m7 minutes.

In addition, the pitch fibers wound around the bobbin were not unwound onto other bobbins, but were subjected to infusibility treatment according to the usual method while being wound around the bobbin, and it was found that the infusibility treatment was carried out very efficiently. I understand.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram illustrating a conventional fiber winding method using a yarn traverse method. FIG. 2 is a schematic diagram illustrating a fiber winding method using a bobbin traverse method according to the present invention. 1: Spinning nozzle 2: Fiber 4: Bobbin 6: Traverse guide agent's name Motoi Kurauchi tU? R Kurahashi 395-

Claims (1)

[Claims] 1) Rotating a bobbin for winding the pitch fiber around the longitudinal central axis of the bobbin, and rotating the bobbin along the longitudinal central axis of the bobbin at a traverse speed of 2 to 1 oomm per rotation of the bobbin. A method for winding pitch fibers, characterized in that the brittle spun fibers from the spinning nozzle are wound onto the bobbin by causing reciprocating motion within the range of .