JPS588128A - Stretch-breaking apparatus of fibrous bundle - Google Patents

Abstract

PURPOSE:To make it possible to stretch-break a tow or yarn even of a fine count at a high speed, by protecting the two or yarn from a tubulent action of turbulent air with a protecting box having rectifying plates of the double or more structure with planes in the direction almost perpendiculr to the rotating shafts of stretch-breaking rollers. CONSTITUTION:A protecting box is provided to enclose a fibrous bundle 12 in close contact with the introductory side of a fibrous bundle 12 of stretch-breaking rollers 7 and 7', and two or more reactifying plates 2 are provided in the direction perpendicular to the rotating shafts of the stretch-breaking rollers 7 and 7'. The rectifying plates 6 are almost parallel to one another, and the following disadvantages are eliminated: A gas passing through the gap between the rectifying plates 6 prevents the blowing out of the gas from the passage side of the fibrous bundle 12, and fibers are blown from the gap between the protecting box and the stretch-breaking rollers 7 and 7'.

Description

[Detailed description of the invention] The present invention is a fiber bundle tension cutting device K11l.

Conventionally, a method has been developed to cut tow or yarn and join them to make spun yarn all at once. . That is, when the tension cutting speed increases, the fibers being cut are disturbed by the am gas. For this reason, attempts were made to use a protective surface to prevent the disturbance of the airflow during tension cutting, and although some success was seen with this, it still caused problems in high-speed tension cutting when the count became thinner. There may be nine cases. As a result of further investigation, we discovered that high-speed tension shearing could be achieved even in the first position by using a protective surface with a triple or more structured Ill shake plate having a flat surface in a direction substantially perpendicular to the tension shearing roller axis. This is from device O@KII4.

That is, this working beak is used in a device that tension-cuts a tow or yarn made of continuous fibers between a delivery roller and a pair of O tension-cutting rollers that rotate at a circumferential speed greater than the circumferential speed of the delivery roller. , axillary hawk-kiri - a protective surface that is in close contact with the raO fiber east approach side and surrounds the sashimi-east, and the protective surface is approximately parallel to the direction orthogonal to the 11@ axis of the isasui-kiri roller. The fiber bundle tension cutting device has a plurality of rectifier plates, and the plurality of rectifier plates are arranged at opposite positions with the fiber bundle sandwiched therebetween.

Hereinafter, the present invention will be explained in more detail according to the g-plane. Fig. 1 is a schematic diagram showing a specific example of the work using the device of the present invention, in which the tow or thread 11 pulled out from the zebin 1 is supplied to the first delivery roller &``hatake'' via a tension adjusting shears. be done. Next, one tow or yarn is added to the #& device 4, a reel delivery roller 5', and a pair of tension cutting rollers 7.
．． After the fiber bundle is drafted by a tension cutting device (2) consisting of 1', it is subjected to an air false twisting treatment at a yarn forming section (Φ) and wound up.

The first delivery roller &3' and the second delivery roller shown in Fig.
The feed roller shaft 5' is a cooler turn system using separate rollers, and the yarn forming section (0) receives a tension draft and is composed of a yarn suction device 8 and a false twisting nozzle 9. The fibers that receive the tension draft are the ones that undergo heating among the nine fiber bundles, and the main fibers are untwisted.
Km11 direction IIC wrapped spun yarn is formed and pulled out by take-off rollers 10, 10'.

In this case, in the fiber bundle tension-cutting device @, an accompanying airflow is generated by the rotation of the tension-cutting roller 7.7' as shown in No. 2@, and the fiber east entrance side portion KsI of the tension-cutting roller 1.7' J) It generates airflow due to collision between airflows. If the tow or loam yarn in the tension draft is disturbed by this IL air 11, an increase in yarn unevenness, yarn breakage, etc. will occur, so a protective surface has been used to prevent the disturbance of the airflow.

As shown in FIGS. 3 and 411, the protective surface according to the present fIk is one that is in close contact with the east entry side of the tension cut-two O fiber, and surrounds the scissor fiber east, and furthermore, It is a round type using a plurality of O11 flow plates substantially parallel to the direction perpendicular to the Il@ axis direction.

The T9 conventionally tried and tested protection box is the tension roller 7.7
It has a structure in which the east entry side of the fiber surrounds the tow or yarn, and is brought into close contact with the stretcher 1', and has the effect of disturbing the airflow in the section shown in No. 851I. The protective surface of this vh@ device protects the tow or yarn from the tow, and the protective surface of this vh@ device has two or three or more pieces of #11 sand thrown in a direction perpendicular to the rotation axis of the tension cutter 9-toe. Toshikaru multiple boards O11
The flow plates 6 are placed at opposing positions with the fiber bundle 12 in between. Further, the # rectifier plate 6 does not necessarily have to be a flat plate, and may be a flat plate, but it is necessary to use a plurality of plates and to make sure that they are substantially parallel.

Since the present device has such a configuration, it has been tried in the past, and as shown in the picture of Kubo, a slight gap is formed at the contact part with the tension cutting roller 7.1' as shown in Part 1. This rounding creates a ridge that eliminates the defect of fibers blowing out from the gaps. In particular, when the count is thin, the tow is disturbed by the turbulent airflow caused by mildew, and the single fibers fly out from the gaps, causing yarn unevenness and yarn breakage. -The disadvantages of

Since the protective surface of the present invention is provided with a plurality of rectifying plates as described above, the airflow caused by the accompanying #1K generated by the transfer of the fiber bundle is between the rectifying plate and the fiber bundle. The flow velocity is different between the one that occurs between the am plate and the current plate, and the one that passes between the a and *ei plates! It is believed that the above effect is produced because the leading gas prevents the airflow from blowing out from the side through which the fiber bundle passes.

The details of Keimei Nyomoto will be explained below with reference to Examples.

1I Example 11 According to the process shown in Figure), a polyester tow with a single yarn denier of z1- was cut to obtain a No. 60 spun yarn. The yarn quality of this spun yarn was evaluated based on the Worcestershire unevenness σ- and the number of neps (length l x thickness of the corner +140 or more) k, and compared with the Toku9 spun yarn using the conventional *5iit. The results will be presented here. As is clear from Table 1, the neps are reduced by using the protective surface for the present invention.

(9) When the conventional hoist 111i is used, yarn breakage occurs frequently due to tow disorder, and stable continuous processing cannot be performed.

Table 2 shows the number of U- and summer-9 spun yarns of No. 100 obtained by cutting polyester tow of single denier as denier using one cage similar to Example 1. No.! It is clear from the results that the KU value improved from 2αl to 18%, indicating that the present invention is effective in producing fine-count spun yarns of 411. According to the present invention, when d-tow or thread is cut into sections and conjugated to make a spun yarn all at once, as in the case of yarn, even if the count becomes thin, the disturbance of the airflow during stretch-cutting can be prevented.

The effect is very large because uniform high-quality spun yarn can be obtained continuously and at high speed.

[Brief explanation of drawings]

Fig. 1 is a diagram of one duck showing nine specific examples using the device of the present invention, Fig. 3 is a perspective view illustrating the occurrence of turbulence in the tension cutting roller, and Figs. 3111I and 4 are the device of the present invention. This shows an example of an 11m1 storage area with a plurality of rectifying plates.
, FIG. 3 is a perspective view. FIG. 4 shows its plan view. Further, No. S@ is a perspective view illustrating the state of disturbance of the O single fiber between the protective surface, the tension cutting roller, and the O. &5'...Feeding roller 7.7'...Tension cutting roller 11...Tow or thread 6 made of continuous fibers...
... Rectifier plate '1JJi diagram (A) Figure 2Y & 3

Claims (1)

[Claims] t. A tow made of continuous fibers between a feeding roller and a pair of tension cutting rollers rotating at a circumferential speed greater than the circumferential speed of the feeding roller. Or, in a device for cutting threads, it is a protective surface that is in close contact with the fiber east entrance side of the tension cutting roller and surrounding the fiber bundle, and the Isaba box is perpendicular to the rotational axis of the tension cutting roller. A fiber bundle tension cutting device having a plurality of rectifying plates substantially parallel to the direction, and having multiple O11 flow plates disposed at opposing positions with the fiber bundle sandwiched therebetween.