JPH06123021A - Method for processing cut yarn - Google Patents

Abstract

PURPOSE:To cut a yarn with rollers without using a cutter and simply produce the cut yarn by intermittently transferring the yarn, cutting the yarn with a pair of scored rollers, twisting the cut yarn with a core yarn, and subsequently covering the twisted yarns with a press yarn. CONSTITUTION:A yarn 20 is intermittently transferred with a back bottom roller 3 and a back top roller 4, and subsequently cut with a pair of scored rollers 9, 10. The cut yarn 20a is twisted with a core yarn 21 by the use of a false twister 13 disposed under a hollow spindle 12 and simultaneously covered with a press yarn 22, and the produced cut yarn 23 is wound up on a winding drum 15. The yarn 20 is preferably cut by intermittently rotating the back rollers 3, 4 and cutting the yarn 20 by the action of the scores of the scored rollers 9, 10 at the contact point 11 of the rotated scored rollers 9, 10, when the back rollers 3, 4 are stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a cut yarn in which another cut yarn is provided on the yarn.

[0002]

2. Description of the Related Art Such cut yarn has a bulge and has a faint color tone, and is preferred for clothing.

[0003]

However, a simple method for processing cut yarns has not yet been provided.

The object of the present invention is to provide a simple method for processing cut yarns.

[0005]

According to the method of the present invention, a yarn is intermittently fed and cut by a pair of scoring rollers, and the cut yarn is twisted with a core yarn and covered with a holding yarn. It has a feature.

The above-mentioned thread cutting is performed by a pair of front rollers having a streak for cutting the thread, a pair of back rollers for feeding the thread, and a pair of aprons for holding the thread to be cut and holding the thread end. Thus, it is preferable that the back roller is intermittently rotated and the front roller is streaked when stopped, so that the thread is cut at the contact point of the front roller.

[0007]

In the above method, the yarn is cut, twisted with the core yarn, and covered with the holding yarn, which is simple.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an apparatus embodying the present invention.

In the figure, one end of a belt-shaped bottom apron 5 is wound around a back bottom roller 3 driven by a servo motor 2 in the direction of an arrow according to a command from a command device 1, and the other end of the apron 5 is Small diameter bottom shaft 7
It is wound around. A top apron 6 is provided in pressure contact with the apron 5 and is wound around the back top roller 4 and the top shaft 8. And both aprons 5,
The yarn 20 is clamped by 6 and is sent out.
A clutch may be used instead of the servo motor 2.

In front of these aprons 5 and 6 (on the left side in FIG. 1), there are provided a roller 9 with a front underline and a roller 10 with a front top line that mesh with each other, and the roller 9 is in the back position. The bottom roller 3 quickly rotates in the direction of the arrow. Further, the front top streak roller 10 is provided with a pair of grooves 10a for guiding the core yarn 21 described later.

Below the roller 9, there are provided a hollow spindle 12 around which a known presser thread 22 is wound, and a false twisting device 13. Below the false twisting device 13, a pair of pulling rollers 14 are provided. And a winding drum 15 are provided.

Next, a mode of cutting yarn processing will be described.

The thread 20 to be cut is composed of both aprons 5, 6
Is guided to both rollers 9, 10 rotating faster than the back bottom roller 3. Therefore, when the supply of the thread 20 to be cut is stopped by stopping the servo motor 2 according to a command from the command device 1, the contact points 11 of the rollers 9 and 10 that are still rotating are strongly gripped by the action of the muscle. The thread 20 is torn into cut threads 20a. On this occasion,
The pair of core yarns 21 are guided to the rotating hollow spindle 12 through the groove 10a of the front top streak roller 10, and the cut yarn 20a is twisted with the core yarn 21 by the false twisting device 13 below the hollow spindle 12. They are combined and covered by the presser thread 22.

Next, when the bottom apron 5 is moved by the command of the command device 1, the thread ends of the thread 20 to be cut near the contact point 11 are supplied to both rollers 9 and 10, and the same operation as described above is performed. The cut yarn 20 a is twisted around the core yarn 21, covered with the pressing yarn 20, and the cut yarn 23 shown in FIG. 4 is wound around the winding drum 15 via the pull-out roller 14.

5 to 7 show another embodiment of the apparatus for carrying out the present invention, in which the servo motor 2 is operated by the command device 1.
Roller with back under line 16 driven in the direction of the arrow
And a back top roller 17 that cooperates with the roller 16 to feed the yarn 20 to be cut, and a middle bottom roller 18 and a middle top roller 19 that are driven in substantially the same manner as the rollers 3, 4. This is an example in which the apron 5 and the apron 5 are driven according to the yarn 20 by providing the same structure as the above embodiment except the above. In this embodiment, since the middle top roller 19 is provided with the concave portion 19a,
Even if the rollers 16, 17 stop, this middle top roller 19 can continue to rotate, at which time the thread is cut at the front rollers 9, 10.

[0017]

As described above, according to the present invention, since it is possible to cut with a roller without using a cutting device as in the conventional case, a cut yarn can be processed by a simple method.

[Brief description of drawings]

FIG. 1 is a side view showing an example of an apparatus for carrying out the present invention.

FIG. 2 is a top view showing around the top apron of FIG.

3 is a top view showing the vicinity of the bottom apron of FIG. 1. FIG.

FIG. 4 is a drawing showing the obtained cut yarn.

FIG. 5 is a side view showing another example of the apparatus for carrying out the present invention.

FIG. 6 is a top view showing the vicinity of the top apron of FIG.

FIG. 7 is a top view showing the vicinity of the bottom apron of FIG.

[Explanation of symbols]

 1 ... Command device 2 ... Servo motor 3 ... Back bottom roller 4 ... Pack top roller 5 ... Bottom apron 6 ... Top apron 7 ... Bottom shaft 8 ... Top shaft 9 ... Front under roller with roller 10 ... Front top roller with roller 10a ... Groove 11 ... Contact point 12 ... Hollow spindle 13 ... False twisting device 14 ... Pull-out roller 15 ...・ Makitori drum 16 ・ ・ ・ Back under roller with roller 17 ・ ・ ・ Back top roller 18 ・ ・ ・ Middle bottom roller 19 ・ ・ ・ Middle top roller 20 ・ ・ ・ Cut yarn 20a ・ ・ ・ Cut yarn 21 ・..Core yarn 22 ... Pressing yarn 23 ... Cut yarn

Claims (1)

[Claims] 1. A method for processing a cut yarn, which comprises feeding a yarn intermittently, cutting it by a pair of scoring rollers, twisting the cut yarn with a core yarn, and covering the yarn with a holding yarn.