JPS6228486A - Multistage pre-twisting type method and apparatus for producing multilayered twisted wire - 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 (Field of Industrial Application) The present invention relates to a multi-stage pre-twisting multilayer stranded wire manufacturing method and apparatus.

(Prior art) Fig. 1 shows a so-called 19 layer formed by twisting one center line wO, 16 second layers 1w2, and 12 second layers 1w2.
This indicates individual stranding, but conventionally, such multilayer stranded wires are produced by separating each element wire into layers using a dividing plate I, but the stranding is produced using a single stranding machine E. Alternatively, it may be produced, for example, by a cage type twisting machine as illustrated in FIG.

The illustrated cage-type wire stranding machine produces a multilayer stranded wire having up to the eighth layer, in which adjacent layers are twisted in opposite directions, and as is clear from the figure, the center line is from the bobbin 100. Each of the strands of the first, second and eighth layers is fed out,
They are twisted together while being sent out from rotating cages 101, 102 and 103, respectively.

In addition to the above-mentioned cage type wire stranding machine for manufacturing multilayer stranded wires, large hollow cylindrical bodies are coaxially connected, and each strand is attached to the hollow cylindrical body (not shown). So-called tubular stranding machines, which run along the inner wall, are also known.

(Problem to be solved by the invention) When such multi-layer twisted wires are to be twisted together after dividing each element line into each layer, each layer should be formed and aligned there. It often happens that some of the wires are out of alignment and no longer parallel to the adjacent wires, or in extreme cases, the wires become slack and protrude outward [7]. . The main cause of this is tension imbalance, such as the tension of the strands being too weak, but in order to eliminate this problem, a large cage-type wire twisting machine as shown in Figure 4f is used, and the Another twist is taking place.

However, [7] However, whether the multilayer stranded wire manufacturing equipment is cage type or tubular type, the cage type frame or cylindrical body that supports a large number of each element wire bobbin is rotated and twisted, so the effect of centrifugal force is high. The drawback was that it could not rotate at high speeds and had low efficiency.

(Means for Solving the Problem) In order to solve the above-mentioned problem, the present invention collects one center line and a plurality of first layers, and twists them by giving them one S twist. Adding (β-α)n S twists to the intermediate stranded wires twisted in the above step, and adding 11 S twists to a plurality of second layers to be combined. a step of twisting, and giving (β-1)n Z(S) twists to the twisted wire in the above step, and then n
a multi-stage pre-twisting multilayer stranded wire manufacturing method, the method comprising the step of providing S twist times, and an apparatus for carrying out this method;
That is, it includes a hollow rotating frame that carries a plurality of guide rollers, and a capstan cylinder that is rotatably supported on the outside of the rotating frame, and the rotation of the rotating frame is caused by winding around the capstan cylinder. a plurality of pre-twisting devices that give twists to the filament to be twisted; and a double-twisting device that is provided downstream of the pre-twisting devices and includes a take-up device and a winding device inside a rotationally driven flyer. The present invention provides a multi-stage pre-twisting type multi-layer twisting device characterized by having the following features:

To summarize the above contents in a nutshell, even if you do not use the method of twisting each layer separately using a cage, but the method of all-at-once twisting, it is possible to create a new method of twisting that does not cause the above-mentioned strands to become disordered or protrude. A method and apparatus are provided.

(Function) The center line and the first layer wire are once twisted together by the first pre-twisting device which rotates by αn, and then the second layer wire is added to the outer periphery, and the second pre-twisting device rotates by βn. Gives twist by. At this point, each wire has been given 11 S or Z twists.

Depending on the selection of the values of α and β, this is approximately the final strand condition. Then, by passing it through a twisting device twice,
The stranded wire is once untwisted and then re-twisted into a predetermined twisted state, resulting in an aligned multilayer stranded wire in which the tension of each strand is balanced.

By using a plurality of pre-twisting devices, it is possible to balance the tension of each strand by pre-twisting each layer.

(Example) First, an example device of the present invention will be explained with reference to FIG.
At the same time, the steps of the method of this invention will be explained.

A simple diagram in Figure 2 (blocks 1 and 2.4 are the center line delivery device, first layer wire delivery device, and second layer wire delivery device, respectively); Sending means shall be provided.

As shown in an enlarged view in FIG. 3, reference numerals 3 and 5 indicate pre-twisting devices, which include a hollow cylindrical rotary frame 31 rotatably supported on a base 30; It consists of a capstan cylindrical body 32 that rotatably engages with the outer circumference of this rotating frame 31. The end of the rotating frame 31 (the seven rungs 33 integrally extend outward in the radial direction,
Four guide rollers 34, 35, 36, 37 are mounted here so that they can all rotate around their own axes. Of these, the guide rollers 34 and 37 are connected to the rotating frame 3.
1, so that its outer circumferential portion is in contact with the central axis of 1.

The wires such as the center @wO and the first layer wire W1 are moved by the guide roller 3.
After passing through rollers 4 and 35 and being wound around the outer periphery of the capstan cylinder 32 two and eight times, it passes through guide rollers 3B and 37, travels along the center axis of the rotating frame 31, and heads downstream.

In this pre-twisting device 3, by rotating the rotating frame 31 using a pulley 38 fixed to the rotating frame 31i, the material flowing into the guide roller 34 is twisted in accordance with the rotation speed of the rotating frame 31. It is something that can be given many times.

In addition, when there is a possibility that the pulling force downstream is insufficient, or when it is desired to apply a pulling force intermediately for other reasons, the capstan cylinder body 32 can be separately driven via its boo 1-39. .

One center sent out from center value sending device 1 @w 6
The six first layer wires W1 sent out from the first layer wire sending device 2 were originally introduced into the pre-twisting device 3, and the twelve second layer wires W2 sent out from the second layer wire sending device 4 were originally introduced into the pre-twisting device 3. It is guided to a twisting device 5.

The one designated by the reference numeral 6 is a well-known double twisting device,
A floating frame 62 is rotatably supported inside the fryer 61 which is rotatably driven.

A take-up device 65 and a take-up device 66 are provided on the floating frame 62. Further, a first guide roller 63 and a second guide roller 64 are provided on the rotation axis ζ of the flyer so that their outer peripheral portions are in contact with this.

Now, regarding the operating method of this invention device, the pre-twisting device 3,
The rotating frame 31 of the fifth embodiment and the flyer 61 of the double twisting device 6 are both driven to rotate in the same direction. The number of rotations is αn rotations for the pre-twisting device 3, βn rotations for the intermediate pre-twisting device 5, and n rotations for the second twisting device 6. Here, α and β are arbitrary positive numbers greater than 1.

If we now rotate it in the direction of the arrow shown in Figure 2, the center line WO and the first layer line W1 will be twisted by the pre-twisting device 3 at A in the figure.
At the point, α1 S twist is applied, and it becomes an intermediate strand and proceeds downstream.

Then, at point B, which is about to enter the front twister R5,
(β-α)n S twists are added to the center line Wo and the first layer @W1 due to the difference in rotational speed between the pre-twisting device 3 and the pre-twisting device 5. However, 1wt of the second layer twisted on top of the intermediate stranded wire of the lever is of course given 11 S twists for the first time.

Next, at the 6 points immediately before the twisted wire advances and enters the 2nd conversion device 6, due to the difference in the rotational speed of the pre-twisting device 5 and the 2nd twisting device 6, (β-1)n Z twists are performed. At point D between the second guide roller 64 and the take-up device 65 on the floating frame, n times of S twists are applied.

Since each strand only passes through the pre-twisting devices 3 and 5, it is clear that these ζ twists do not remain and only 21 S twists from the double-twisting device 6 are obtained in the end. However, in this invention, the direction and magnitude of the twist are important.

Now when I examine this on the bare wire side, I find that the center is @W.

And the first layer wire W1 is represented by a positive sign for S twist and a negative sign for Z twist, -)-ct n -4-(β-α)n-(β-1)n+
n+n=2n Also, for the second layer 1wt, +βn-(β-1)n+n=2n From these equations, for each strand, at the beginning of twisting) υ1, αn or βn for the final twist Zn. It can be seen that the twist t') is given.

Therefore, for example, if α = 2 and β - 2 are selected, at the beginning of the twisting process for both the first layer and the second layer, a length of strand for the final twist is pulled out and wound into a strand. It can be seen that the fibers are stranded, untwisted, and then twisted again into the final strand. Because of this twisting process, even if for some reason tension imbalance occurs when each strand is fed out,
The resulting irregularities can be eliminated during the so-called pre-twisting stage by this pre-twisting device.

Of course, the values of α and β do not need to be 2; any positive number greater than 1 is effective, but
α, β=about 2±0.7 is practical.

In the method of the invention, the first layer is prepared by the pre-twisting device 3, and the tension of the second layer is balanced by the pre-twisting device 5. It should be noted that the pre-twisting device provided in multiple stages works effectively.

For convenience of illustration and explanation, the present invention has been described above with respect to an 8-layer stranded wire provided with two pre-twisting devices, but of course it can be applied to a multi-layer stranded wire with more layers.

(Effects of the Invention) According to the present invention, (1) a plurality of pre-twisting devices are provided and pre-twisting is performed for each layer, so a neat multi-layer twisted wire with no strands protruding can be obtained; (1) Since the rotating frame carrying a large number of wire bobbins is not rotated, the device can be operated at high speed and is efficient.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a multilayer stranded wire to be produced by the method of the present invention, Fig. 2 is a side view showing an embodiment of the device of the invention, and Fig. 8 is an enlarged side view showing pre-twisting. , FIG. 4 is a side view showing a cage type wire twisting machine which is an example of the prior art. 1... Center line sending device, 2... First layer line sending device,
4... 2nd Nj@ sending device, 3, 5... Pre-twisting device,
6...2-degree twisting device, WO...center line, Wl...
1st layer wire, W2...2nd layer wire

Claims (1)

[Claims] 1. One center line (w0) and a plurality of first layer lines (w0)
1) and twisting them by giving them αn S(Z) twists, and adding (β−α)n S(Z) twists to the intermediate stranded wires twisted in the above step. , a step of applying βn S(Z) twists to the merging second layer wires (w2), and applying (β-1)n Z(S) twists to the twisted wires obtained in the above step. A method for producing a multi-stage pre-twisted multilayer stranded wire, the method comprising the steps of: applying a pre-twist, and then applying an S twist n times. 2. The multi-stage pre-twisting multilayer stranded wire manufacturing method according to claim 1, wherein the α and β values are numerical values approximately close to 2. 3. A hollow rotating frame (31) supporting a plurality of guide rollers (34, 35, 36, 37), and a capstan cylinder (31) rotatably supported on the outside of this rotating frame.
32), a plurality of pre-twisting devices (3, 5) for twisting the filamentary body wound around the capstan cylinder as the rotating frame rotates; and a plurality of pre-twisting devices (3, 5) provided downstream of the pre-twisting device. A take-up device (65) and a take-up device (
66) A multi-stage pre-twisting multilayer stranded wire manufacturing apparatus, characterized in that it has a double twisting device (6) comprising: