JPS59106536A - Production of special fancy yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a novel design yarn using a twisting machine.

Conventionally, there is a known method of overfeeding another yarn (wound yarn) into the heating area of one yarn (core yarn) that is being heated and winding it around the core yarn to form a decorative yarn with a slun. be.

However, in the conventional method, the frequency of occurrence of slabs and the slab length cannot be controlled, and there are problems in that only a specific range of slab yarns can be formed.

The present invention solves the problems of the conventional method and provides a method that can arbitrarily control the frequency of occurrence of slabs and the length of slabs to form various types of slub yarns. When forming a decorative yarn with a slab, by overfeeding the other yarn (wound yarn) into the heating area of one yarn (core yarn) that is being twisted and wrapping it around the core yarn, The method for producing a special designed yarn is characterized by feeding the core yarn at a constant feed rate and overfeeding the wrapped yarn intermittently.

The present invention will be described in detail below with reference to the drawings. Figure 2 is a side view showing an example of the device used to carry out the present invention. The winding thread (Fb) is supplied to the m combustion zone from the front roller (2) of the machine via the guide (3), while the winding thread (Fb) is supplied to the guide (1).
), the traverse guide ( after passing through the tension adjustment device (4)
7) is intermittently gripped by the back roller (5) of the design twisting machine and guided (8).

After passing through (6), the thread is wound around the core thread (Fa) which is being heated, and then the pusher thread (Fc) is attached to the washer (9).
It is covered at the position , and finally rolled up by the winding device (11). The first point of the device shown in the figure is that the wrapped yarn (Fb) is intermittently gripped by the back roller (5) by the action of the traverse guide (7). When the wrapped yarn (Fb) is inserted at a predetermined overfeed rate by the back roller (5), the twisting point of the wrapped yarn (Fb) with respect to the core yarn (Fa) starts a reciprocating movement, and -1 Two slabs are formed.

In other words, since the wrapped yarn (Fb) is overfed, the supply tension is small at first, but as it is wound, the winding tension increases, so that the core yarn (Fa) and the wrapped yarn (Fb)
When the twisting point moves and the tension of the wound yarn (Fb) increases to a certain extent, the twisting point moves in the opposite direction in an attempt to return to a stable twisted state, and the supplied tension of the wound yarn (Fb) decreases. When the winding action continues, the tension of the winding yarn (Fb) increases again and the twisting point moves in the opposite direction.

In this way, the twisting point moves back and forth within a certain range depending on the feed rate of the winding yarn (Fb), so the winding yarn (Fb)
) by keeping the overfeed rate constant, the frequency of slab occurrence is also regulated within a certain range.

On the other hand, in the case of the device shown in the figure, the traverse guide (7)
By regulating the grasping of the wrapped yarn (pb) by the back roller (5) by vc, overfeeding of the wrapped yarn (Fb) and, by extension, the frequency of occurrence of slabs can be controlled.

The second point of the device shown in the figure is the action of the tension adjustment device (4).

That is, the tension adjustment device (4) controls the tension of the wrapped yarn (Fb) when the wrapped yarn (Fb) is not gripped by the back roller (5), that is, when a non-slab portion is formed. When the tension of the wrapped yarn (Fb) is equal to the supplied tension of the core yarn (Fa), the non-slab part is
It becomes a twisted yarn with b), but 2. It is possible to fully control the slab frequency.
When the tension is higher than that, it is not only possible to control the slubbing frequency, but also to control the slubbing frequency in the non-slab area.
(Fa) is in a rolled-up state. Roughly wound yarn (Fb
) is lower than the tension of the core yarn (Fa), the same tendency as in the prior art occurs and it becomes difficult to control the slabbing frequency.

Therefore, it is preferable that the supplied tension of the wrapped yarn (Fb) is equal to or higher than the supplied tension of the core yarn (Fa) using a tension adjustment device. The tension adjustment device is a magnetic tensor.

Ordinary tensioners such as gate tensioners and washer tensioners will work fine.

However, if left as is, the slab portion that has been formed may easily be rubbed off by external force. In such a case, it is sufficient to cover the thread (Fc) from the washer (9) to the twisted yarn.

In addition to the method using the device shown in the figure, there are two methods for controlling the slab frequency, such as varying the number of revolutions of the back roller (5), or winding the bottom roller of the back roller (5) as a tapered roller within the width range of this roller. Methods such as traversing the attached thread may be considered, but these methods are disadvantageous compared to the method using the apparatus shown in the figure in that they require a large investment in equipment.

According to the present invention configured as described above, the frequency of occurrence of slabs and the slab length can be arbitrarily controlled, and the industrial value thereof is extremely large.

Using the apparatus shown in the example diagram, polyester filament SD 75d/24f was used as the core thread (Fa), polyester filament SD 50d/24f was used as the winding thread (Fb),
Polyester filament 5D30 as sold (Fc)
When the yarn was twisted using d/12f under the following conditions, a designed yarn with a slab length of 5 to 6 ctrtr and a non-slab portion length of 5 to 6 m was obtained.

Number of twists: 800'r/M (z) Core thread supply tension
; 10~121 Time for holding the winding yarn by bank roller (5); 3~
4 seconds Bank roller (5) does not hold the winding tip; 3
0-40 seconds winding yarn overfeed rate: 35%

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of an apparatus used to carry out the present invention, and in the same figure, each number and symbol indicates the following. (Fa)... Core thread (Fb)... Winding thread (Fc)... Push sale (1)... Guide (2)... Design twisting machine front roller (3)
... Core thread guide (4) ... Tension adjustment device (5) ... Back roller of design twisting machine (6) ...
,... Winding thread guide (7)... Traverse guide (8)... Guide (9)... Washer (io)... Snell guide (11)... ...Bobbin 21

Claims (3)

[Claims] (1) When forming a decorative yarn with a slub by overfeeding another yarn (wound yarn) into the heating area of one yarn (core yarn) that is being twisted and winding it around the core yarn. , a manufacturing method for special designed yarn characterized by feeding the core yarn at a constant feed rate and overfeeding the winding yarn intermittently. (2) The method for manufacturing a special design yarn according to claim 1, wherein the wrapped yarn is passed through a tension adjustment device and then intermittently gripped by a supply roller to intermittently overfeed the yarn. (3) Claims 1 or 2, which cover a pusher thread on a designed thread obtained by winding a winding thread around a core thread.
Manufacturing method for special designed yarn as described in section.