JPH0221340B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for twisting irregularly shaped strands. The stranded wires obtained by the apparatus of the present invention typically include composite overhead wires such as overhead ground wires or overhead power transmission lines, but further include:
It also includes twisted wires like rope. Note that the present invention is particularly advantageous when applied to an optical composite overhead ground line equipped with an optical transmission function.

Background of the Invention or Prior Art For example, an overhead ground wire that has been practiced for a long time uses an aluminum-coated steel wire and/or an aluminum alloy wire with a circular cross section, and around one wire, for example, Some are made by twisting the strands of books together. However,
Recently, with the spread of optical transmission, this overhead ground wire has been provided with an optical transmission function in an effort to efficiently utilize the overhead ground wire.

In this way, overhead ground wires equipped with optical transmission functions are
An optical fiber unit is used for the center wire. There are various types of optical fiber units, but most typically have an optical fiber core housed in a pipe made of aluminum or its alloy. However, compared to ordinary wires, optical fiber units
Since the tensile strength is not so great, when an optical fiber unit is used in this way, the strength of the overhead ground wire as a whole is reduced. Therefore, in order to obtain the necessary strength as an overhead ground wire, it is conceivable to increase the diameter of the strands used there. However, if such measures are simply carried out, the apparent outer diameter of the overhead ground wire as a whole increases, making it more susceptible to wind pressure, which is not a very favorable result from the perspective of the overhead ground wire's use. I understand that.

Therefore, the following proposal was made as a method for increasing the strength by increasing the cross-sectional area of each strand while reducing the overall outer diameter of the overhead ground wire. That is, the cross section of the wires twisted around the optical fiber unit is substantially fan-shaped, and the outer surface of the twisted overhead ground wire is formed into a substantially cylindrical peripheral surface. Note that the fan shape here is a shape obtained by dividing a portion sandwiched between two concentric circles by a cutting line facing in the radial direction. When a stranded wire is constructed using wires having such a cross-sectional shape,
Not only is the tensile strength improved without significantly increasing the outer diameter of the stranded wire, but the bridge effect of each strand that makes up the stranded layer reduces the pressure from the surroundings applied to the optical fiber unit passing through the center. It also has the additional effect of alleviating the

However, in the case of irregularly shaped wires having irregularly shaped cross sections such as fan shapes, several problems are encountered in the wire twisting process. The traditional stranding method is
Typically, there are two types of wire twisting machines, one of which is called the Iwaoru "with return twist" type. ``wire machine'' or ``tubular type stranding machine''
There is. Another type of twisted wire is the so-called "non-twisting" type, and a "rigid type wire twisting machine" is a wire twisting machine that performs this type of twisted wire.

In the "twisted" type, the bobbin that supplies the wire is planetarily moved around the center wire while keeping its axial direction constant. Therefore, each strand twisted around the center wire remains spirally wound around the center wire while maintaining a constant inclination on the cross section.
However, if the cross-sectional shape of the wire is circular,
Even with such a stranding method, the wires can be aligned along the outer peripheral surface of the center wire, but in the case of irregularly shaped wires with a fan-shaped cross section, this It is not possible to simply use the "with twist" method.

On the other hand, according to the stranded wire of the "no twisting" method, the above-described irregularly shaped strands can be twisted together in close surface contact with the outer circumferential surface of the center wire.
However, large stress remains in the strands twisted together using this method, and unless this stress is removed, a stranded wire with good performance cannot be obtained. In other words, as a stranded wire, there should be no "unraveling" of each strand, and rotation of the entire stranded wire (untwisting).
It is required that there be no "waviness" in the strands (to be straight as a whole). However, when the wires are twisted in the "no twisting" method, the above-mentioned performance required for the twisted wire cannot be met due to residual stress in the strands after twisting. Therefore, conventionally, "no twisting" was used.
When the wires are twisted using this method, the wires are passed through a post-forming step after the twisting step in order to remove residual stress inside the wires. This post-forming step is carried out by applying pressure from the outside of the stranded wire, for example with a post-forming roller.

However, even implementing this postform process does not solve all the problems caused by the "no twist" method. First, for materials with high tensile strength, such as steel wire, residual stress cannot be completely removed by a mere post-forming process.
Further, especially in the case of a stranded wire having an optical fiber unit as the center wire as described above, the optical fiber unit may be damaged by this post-forming process. In other words, the pressure applied in the post-forming process may cause the pipes that make up the outer periphery of the optical fiber unit to dent and crush the optical fibers inside, or the rollers used in the post-forming process may apply tensile force. This may cause the optical fiber inside to break.

Purpose of the Invention According to the twisted wire of the above-mentioned "with twist" method,
At least the problems caused by residual stresses that occur in the "no twist" method are eliminated. Therefore, when twisting the irregularly shaped strands, it is preferable to use this "untwisted" type of stranded wire.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a device for twisting irregularly shaped strands, which can advantageously perform twisting of twisted wires.

Summary of the Invention The wire twisting device of the present invention is a wire twisting device for twisting a plurality of irregularly shaped wires to which a spiral twist has been applied in advance around a center wire, a plurality of bobbins each holding a wound wire; a center wire feeding means for feeding the center wire in the axial direction thereof; A bobbin revolution device that causes planetary movement around the bobbin, and a batten that rotates in synchronization with the planetary movement of the bobbin and passes through a plurality of irregularly shaped wires pulled out from each bobbin,
a gathering die that gathers and twists a plurality of irregularly shaped wires pulled out from a bobbin around a central wire;
By contacting at least a part of the peripheral surface of the irregularly shaped wire at at least one point between the bobbin and the collecting die, the tilted posture on the cross section of the irregularly shaped wire is determined based on the non-circular cross section of the irregularly shaped wire. It is equipped with a means of restraint. Particular attention should be paid to the last-mentioned component, which allows each irregularly shaped strand to be corrected so that it always assumes a proper tilted posture at the twisting end.

Effects of the Invention According to the wire twisting device of the present invention, irregularly shaped wires can be twisted efficiently. In particular, by means of restraining the tilted posture of the irregularly shaped strands on the cross section, the tilted posture of the irregularly shaped strands at the twisting end can always be maintained properly, even if the pre-applied twist pitch is deviated. Also, stranding can be carried out continuously under favorable conditions.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view showing an optical composite overhead ground wire 1 obtained using the twisting device of the present invention. The optical composite overhead ground wire 1 shown here includes an optical fiber unit 2 as a center wire. The optical fiber unit 2 includes a circular pipe 3 made of aluminum or its alloy, and inside thereof,
A plurality of optical fiber cores 4 are passed through. The optical fiber 4 is housed in a groove 6 extending spirally in the circumferential surface of a spacer 5 made of aluminum, for example. On the outer periphery of such an optical fiber unit 2, six irregularly shaped strands 7 having a substantially fan-shaped cross section are twisted together. When the deformed wire 7 is made of steel wire or aluminum-coated steel wire and has a tensile strength of 60 kg/mm ² or more,
In particular, the significance of this invention becomes remarkable. Each irregularly shaped wire 7 constitutes a substantially cylindrical twisted wire layer on the outer peripheral surface of the optical fiber unit 2.

FIG. 2 is a front view showing only one irregularly shaped wire 7 shown in FIG. 1. The irregularly shaped wire 7 is given a spiral twist. This irregularly shaped wire 7
The cross-sectional shapes of each part are collectively shown in FIG.

In FIG. 3, each fan-shaped cross section indicated by A to D corresponds to a cross section cut along lines A to D in FIG. 2, respectively. In FIG. 3, as indicated by arrows, the cross section of each portion of the irregularly shaped strand 7 in the length direction changes as A, B, C, D, A, . . . . When using the apparatus according to the embodiment of the present invention, first, a deformed wire 7 having a shape as shown in FIG. 2 is prepared in advance. This will be explained below with reference to FIGS. 4 and 5.

FIG. 4 is a diagram for explaining the process of imparting twist to the deformed wire 7. FIG. FIG. 4 shows a conventionally used rigid wire twisting machine that performs the so-called "non-twisting" method of twisting wire. A deformed wire 7 is wound around the bobbin 8 on the supply side in a normal state. The irregularly shaped wire 7 drawn out from the bobbin 8 is first passed through a batten 9, passed through a preform roller 10, and passed through a collecting die 11.
It is wound onto a bobbin 12 on the winding side. Here, the bobbin 8, batten 9 and preform roller 10 are as follows:
They are rotated synchronously about the center line 13. Therefore, by adjusting the length per unit time of the deformed wire 7 to be wound onto the bobbin 12 on the winding side and the number of rotations per unit time around the center line 13, the winding on the bobbin 12 can be adjusted. The twist pitch of the deformed wire 7 can be arbitrarily selected. In Fig. 4, the bobbin 8 on the supply side is shown as an imaginary line in order to clearly distinguish it from the "with twist" method described later. While the wire 7 is being drawn out, it rotates once while it revolves around the center wire 13 once.

Next, as shown in FIG. 5, the bobbin 12 wound with the twisted irregularly shaped wire 7 is heat treated, for example, in a batch furnace 14. This heat treatment is performed to remove stress remaining in the twisted irregularly shaped wire 7, and at least
Any condition may be used as long as the distortion of the material of the irregularly shaped wire 7 can be removed. However, if the heat treatment conditions are too severe, a strong annealing effect will occur on the material of the irregularly shaped wire 7, resulting in a significant decrease in strength. As a preferable condition, in the case of the irregularly shaped wire 7 made of the above-mentioned material, a temperature condition of 200 to 500°C is selected,
Heat treatment is performed for about 30 minutes. That is, here, if the temperature is less than 200° C., the distortion of the irregularly shaped wire 7 cannot be removed, and if it exceeds 500° C., the strength of the irregularly shaped wire 7 will be reduced.

As a heat treatment method, in addition to using a batch furnace 14 as shown in FIG. 5, a heat treatment device 15 may be placed at a position as shown by the imaginary line in FIG. 4 to carry out the heat treatment in-line. good. As the heat treatment device 15 used here, a high frequency induction heating device or a tunnel furnace can be applied. In addition, in the batch method as shown in FIG. 5, a high frequency induction heating device may be used. Furthermore, a current may be passed directly through the irregularly shaped wire 7 to use Joule heat as a heating means.

Next, as shown in FIG. 6, a twisted wire layer is formed on the optical fiber unit 2 serving as the center wire using a plurality of irregularly shaped wires 7 that have been twisted and have their distortion removed. However, in this case, the "tilted posture restraining means" which is a feature of the present invention works advantageously. In addition, such "tilted posture restraint means"
This will be explained later, but here, the explanation will focus only on the twisted wire itself.

This process is carried out by a planetary type wire twisting machine that performs the "with twist" method of twisting. That is, six bobbins 12 are prepared, each winding the deformed strand 7 which has been twisted and has had its distortion removed, and each bobbin 12 is held in a bobbin revolution device (not shown). Ru. 6th
In the figure, the two bobbins 12 on the near side are omitted from illustration, but each bobbin 12 is kept substantially constant in its axial direction by this bobbin revolution device, and the optical fiber unit 2 planetary motion around. This is a feature of the "with twist" method. The irregularly shaped strands 7 drawn out from each bobbin 12 are passed through a batten 16 and collected in a collecting die 18 while being guided by a preform roller 17. In addition, the preform roller 17
For example, consists of a combination of three rollers,
The spacing between the first and third is chosen to be identical to the twist pitch of the stranded wire to be obtained.

In synchronization with the planetary movement of each bobbin 12, the batten 16
While the preform roller 17 is rotated or revolved (arrow 19), the optical fiber unit 2 serving as the center wire is fed in the direction of the arrow 20.
Although not shown, the device for feeding the optical fiber unit 2 includes a capstan and a winding drum arranged in the direction of the arrow 20.

As mentioned above, the optical fiber unit 2 is
While being fed in the 0 direction, each deformed wire 7 is marked with an arrow 19.
When rotation in the direction is applied, each irregularly shaped wire 7 is twisted together at the position of the collecting die 18, and the desired twisted wire is achieved.

When the above-mentioned wire twisting process is carried out over a long period of time (that is, over a long distance), errors between the twist pitch of the irregularly shaped wire 7 and the twist pitch of the stranded wire accumulate, and the twisting end The inclination posture on the cross section of each deformed strand located at the position may deviate from the desired state. Therefore, it is preferable to take measures to prevent this. This treatment is achieved by providing means for restraining the tilted posture of the irregularly shaped wire 7 on the cross section, that is, the above-mentioned "tilted posture restraining means" at at least one location between the bobbin 12 and the collecting die 18. be done. Some examples will be explained below.

FIG. 7 shows a first example of means for restraining the tilted posture of the irregularly shaped wire. In FIG. 7, a pair of rolls 21 and 22 are rotatably attached to the batten 16 via a bracket 23. As shown in FIG. As is clear from FIG. 8, which shows an enlarged cross section taken along line 7 in FIG. Grooves 24 and 25 are formed. Therefore, when the irregularly shaped wire 7 passes between these rollers 21 and 22, the peripheral surface of the irregularly shaped wire 7 passes between the rollers 21 and 2.
2, the posture on the cross section of the irregularly shaped wire 7 is naturally restricted based on the non-circular cross section that the irregularly shaped wire 7 has. If the shape of the twisted irregularly shaped wire 7 is modeled by a sine curve, the peak of this sine curve must be located at the twisting opening 26. In the illustrated example, the rollers 21 and 22 are also set to be at the peak of this sine curve. Therefore, the positions where the rollers 21 and 22 are provided are from these rollers 21 and 22 to the twisting opening 26.
What is necessary is to set the distance to be an integral multiple of the period of the sine curve. Although FIG. 7 shows one irregularly shaped strand 7, other irregularly shaped strands are constructed in the same manner.

FIG. 9 shows the second tilt position restraining means for irregularly shaped wires.
An example is shown. The arrangement shown here is located, for example, where the preform roller 17 of FIG. 6 is located. In this example, three pairs of rollers 28-33 are provided, each pair of rollers being rotatably held by brackets 34-36. The brackets 34 to 36 are connected to turntables 37 to 36, respectively.
It is fixed at 39. Turntable 37-39
are mounted rotatably around an axis 43 while being held by holding stands 40 to 42, respectively. The holding tables 40 to 42 each have an arm 44
It is fixed to the pipe 47 via .about.46. The pipe 47 rotates together with the batten 16, for example, and allows the optical fiber unit 2 to pass therethrough.

As mentioned above, turntables 37 to 39
is rotatably mounted around an axis 43. Therefore, each pair of rollers 28-33 is
The direction can be changed in the direction of arrow 48. By tightening the screws 49 to 51, the inclinations of the rollers 28 to 33 are fixed. Although the shapes of the rollers 28 to 33 are not particularly shown, they are similar to the rollers 21 and 2 described above.
It has the same groove as 2.

In FIG. 9, when the shape of the irregularly shaped strand 7 is considered to be a sine curve, each pair of rollers 28 to 33 is shown positioned at a position corresponding to each peak of the sine curve. However, in this example, even if the roller does not necessarily come to the mountain position,
The tilted posture of the irregularly shaped wire 7 on the cross section can be restricted.

FIG. 10 shows a case where irregularly shaped strands 7a with different twist pitches are used, and in this case, as described above, the locations where each pair of rollers 28 to 33 are located are from the peaks of the sine curve. It may shift. 1st
The positions of the rollers 28 to 33 shown in FIG. 0 are all shifted from the peak of the irregularly shaped wire 7a. In this case, loosen each of the screws 49 to 51 mentioned above, rotate each roller 28 to 33 around the axis 43 to obtain the desired inclination, and then tighten the screws 49 to 51 again to fix the inclination. Bye. Such an arrangement is advantageous when it is necessary to produce strands of different twist pitches using one stranding machine.

Note that if such an advantage is not desired, each of the rollers 28 to 33 may be provided with its inclination fixed. Further, the configuration in which the inclination of the rollers can be adjusted in this way can also be applied to the rollers 21 and 22 shown in FIG. 7 described above.

FIG. 11 shows a third example of means for restraining the tilted posture of the deformed wire 7 on the cross section. In this example as well, the same considerations as in the second example are taken. First, as in the second example, three pairs of rollers 52-57 are rotatably held by brackets 58-60. Each bracket 58-6
Attachments 61 to 63 are formed integrally extending from 0. On the other hand, for example, from the pipe 64 provided to rotate together with the batten 16, the mounting plate 65
are formed to extend radially. The mounting plate 65 has
A long hole 66 extending parallel to the axial direction of the irregularly shaped wire 7 is provided. In order to attach each roller 52 to 57 to the mounting plate 65, a plurality of bolts 67 are prepared. ).

In the example shown in FIG. 11, although the inclination of each of the rollers 52 to 57 is fixed, the position in the length direction of the irregularly shaped wire 7 is adjustable. That is, when the bolts 67 are loosened, each mounting base 61 to 63
can be moved along the elongated hole 66, and can be fixed at that position by tightening the bolt 67 again. Therefore, each of the rollers 52 to 57 can be adjusted to be positioned at, for example, a mountain position of the irregularly shaped wire 7.

In addition, as in the case of FIG. 7, although FIGS. 9 and 11 are illustrated in relation to only one irregularly shaped strand, the same configuration is added to other irregularly shaped strands. ing. That is, in the example of FIG. 9, the arms 44 to 46 each connect to the pipe 47.
In the example shown in FIG. 11, six mounting plates 65 extend in the radial direction around the pipe 64. In the example shown in FIG.

The means for restraining the inclined posture on the cross section of the deformed wire 7 described with reference to FIGS. 7 to 11 may be provided in combination with each other in one wire twisting machine.

FIG. 12 shows, for example, the roller 2 shown in FIG.
1 and 22 are shown. As shown in this figure, grooves 24 and 2 formed on rollers 21 and 22
The cross-sectional shape of 5 can be changed as appropriate.
Here, the deformed wire 7 having a fan-shaped cross-section is restrained in a vertical posture. In short, the grooves formed on the rollers 21 and 22 only need to be combined to form a cross section corresponding to the cross section of the deformed wire 7.

Note that the modification shown in FIG.
It can be applied to the rollers 28 to 33 in the figure as well as the rollers 52 to 57 in FIG. 11.

The means for restraining the tilted posture on the cross section of the irregularly shaped wire 7 does not need to be a pair of rollers. For example, a die 68 as shown in FIGS. 13 and 14 may be used. FIG. 13 shows the die 68 in a front view, and FIG. 14 shows it in a cross-sectional view taken along the line - in FIG. A hole 69 corresponding to the cross section of the irregularly shaped wire 7 is formed in the die 68 . Such a die 68 is the seventh
Rollers 21 and 22 in the figure, rollers 28 to 3 in Figure 9
3 and the rollers 52 to 57 in FIG. 11.

FIG. 15 shows a preferred configuration to be added to the twisting device of the present invention. In FIG. 6, the bobbin 12 is shown with its axis always kept in the same direction during its planetary motion.
More preferably, as shown in FIG. 15, the bobbin 12 is configured to be able to change its tilt during planetary motion, as indicated by arrow 70. 15th
In the figure, the rollers 21 and 22 shown in FIG. 7 described above are shown. For example, roller 2 like this
1 and 22 to restrain the tilted posture of the irregularly shaped wire 7 on the cross section, the irregularly shaped wire 7 existing between the bobbin 12 and the rollers 21 and 22 will be strained in the twisting direction. Sometimes it happens. In the configuration shown in FIG. 15, consideration has been given to eliminating this unreasonableness as much as possible. That is, between the bobbin 12 and the rollers 21, 22, a pair of rollers 71,
72 is placed and held so as to be tiltable in the direction of arrow 73. The rollers 71 and 72 include the roller 21,
22, grooves 24, 25 as shown in FIG.
is formed. Therefore, the rollers 21,2
2, the rotation angles of the rollers 71 and 72 in the direction of the arrow 73 are also restrained via the deformed wire 7 whose tilted posture is restrained. This rotation angle is detected by a rotation angle detection device 74, and its output is given to a rotation control device 75. The rotation control device 75 is
Depending on the rotation angle of the rollers 71 and 72, the bobbin 1
2 to have a desired slope. That is, according to the configuration of FIG. 15, the rollers 71, 72
so that it has the same inclination as the rollers 21 and 22,
Since the tilt of the bobbin 12 is controlled, the bobbin 12
The deformed wire 7 between the rollers 21 and 22 is hardly strained in the twisting direction.

Next, we will introduce the results of experiments conducted to confirm the effects of this invention. First, as an example using a device within the scope of the present invention, a deformed wire is twisted, heat-treated at a temperature of 320°C to remove distortion, and then constrained as shown in Figure 9. When the wires were twisted using a planetary type wire twisting machine, extremely good twisted wire conditions were obtained over long distances.

On the other hand, when the wires were twisted without restraint as shown in FIG. 9, the good twisted state could only be maintained up to 500 m.

Note that the irregularly shaped strands applied to the wire twisting device of the present invention are not limited to those obtained through the steps described above, but may be obtained through the following steps.

In the above-mentioned embodiment, heat treatment was performed in order to remove the distortion of the irregularly shaped wire 7 to which a spiral twist was applied, but as shown in FIG. It may also be applied to the wire 7. A plurality of such rollers 76a to 76f
may be provided, for example, at the location where the heat treatment device 15 of FIG. 4 is provided. Each roller 76a~
76f corresponds to the above-mentioned post-form roller, but since the post-form process in this case is only applied to the irregularly shaped wire 7, it is possible to impose quite severe conditions, and it is sufficient to distortion can be removed.

In addition, as shown in FIG. 17, a so-called "dummy" twisted core 77 is used, and a plurality of deformed wires 7 are twisted around it in a "non-untwisted" manner, and then heat treated. , or after removing the distortion of each irregularly shaped wire 7 using a roller as shown in FIG. 16, as shown in FIG.
may be unwound one by one and supplied from the bobbin 12 shown in FIG.

Furthermore, a deformed wire having only a spiral twist may be applied to the twisted wire device according to the present invention. In this case, after the wires are twisted, heat treatment or the like may be performed to remove the distortion of the irregularly shaped wires.

As mentioned above, the case of obtaining an optical composite overhead ground wire has been described in detail based on the illustrated embodiment, but the present invention is equally applicable to other power transmission lines and even ropes. be able to.

Further, in the illustrated embodiment, the cross-sectional shape of the irregularly shaped strand is exemplified as a fan-shaped one, but it is not necessarily limited to this, and the present invention can be advantageously applied to any non-circular strand. be able to.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an optical composite overhead ground wire 1 as an example of a twisted wire obtained by the present invention. FIG. 2 is a front view showing only one deformed wire 7 shown in FIG. 1. Figure 3 shows
It also shows the cross section of each part of the irregularly shaped strand 7 in FIG. 2. FIG. 4 schematically shows the process of imparting a spiral twist to the deformed strand 7. FIG. 5 schematically shows the process of heat treating the twisted irregularly shaped wire 7. FIG. 6 schematically shows the process of twisting the deformed strands 7 which have been twisted and whose strain has been removed. FIG. 7 shows a first example of the tilting posture restraining means for the irregularly shaped wire 7. As shown in FIG. Figure 8 shows
FIG. 7 is an enlarged sectional view taken along the line - in FIG. 7; 9th
The figure shows a second example of the tilt posture restraining means for the irregularly shaped wire 7. FIG. 10 shows each roller 28 to 3 in FIG.
3 shows one aspect of the adjustment state of No. 3. FIG. 11 shows a third example of the tilt posture restraining means for the irregularly shaped wire 7. FIG. 12 shows a modification of the rollers 21, 22. FIG. 13 is a front view showing a die 68 as another example of the tilt posture restraining means. Figure 14 shows the 13th
FIG. Figure 15 shows
A mechanism for controlling the inclination of the bobbin 12 is schematically shown. FIG. 16 schematically shows another example of the process of removing distortion of the irregularly shaped wire 7. FIGS. 17 and 18 are diagrams for explaining other steps for obtaining a deformed strand 7 to which a helical twist has been applied and strain has been removed. In the figure, 1 is an optical composite overhead ground wire, 2 is an optical fiber unit as a center wire material, 7 and 7a are irregularly shaped wires, 12 is a bobbin, 14 is a batch furnace, 15 is a heat treatment device, 16 is a batten, and 18 is a Collected dice, 2
1, 22, 28-33, 52-57 are rollers, 2
4 and 25 are grooves, 26 is a twist opening, 37-39 are turntables, 40-42 are holding stands, 49-51 are screws, 61-63 are mounting stands, 65 is a mounting plate, 66 is a long hole, 67 is a The bolt, 68 is a die, and 69 is a hole.

Claims (1)

[Scope of Claims] 1. A twisting device for twisting a plurality of deformed strands to which a helical twist has been applied in advance around a center wire, comprising: a plurality of bobbins for holding the center wire in a wound state; a center wire feeding means for feeding the center wire in the axial direction thereof; a bobbin revolution device that causes planetary movement around the bobbin; a batten that rotates in synchronization with the planetary movement of the bobbin and serves as a guide for passing a plurality of irregularly shaped wires pulled out from each of the bobbins; a gathering die that collects and twists a plurality of irregularly shaped strands pulled out from each of the bobbins; and a gathering die that contacts at least a portion of the circumferential surface of the irregularly shaped strands at at least one location between the bobbin and the collecting die. A device for twisting irregularly shaped wires, comprising: means for restricting the tilted posture of the irregularly shaped wires on the cross section based on the non-circular cross section of the irregularly shaped wires. 2. The tilted posture restraining means is composed of a pair of rollers, and grooves having cross sections corresponding to the cross sections of the combined irregularly shaped wires are formed on the circumferential surface of each roller, respectively. A device for twisting irregularly shaped strands according to scope 1. 3. The device for twisting irregularly shaped wires according to claim 1, wherein the tilt posture restraining means is constituted by a die having a hole corresponding to the cross section of the irregularly shaped wires. 4. The heteromorphic element according to any one of claims 1 to 3, wherein the tilt posture restraining means is distributed and arranged at a plurality of locations along the length direction of each irregularly shaped element. Wire twisting device. 5. The tilt posture restraining means is configured to adjust the rotation angle of the irregularly shaped wire around the central axis of the irregularly shaped wire according to any one of claims 1 to 4. Stranding device. 6. The tilt position restraining means is adapted to twist the irregularly shaped strands according to any one of claims 1 to 4, wherein the position in the length direction of the irregularly shaped strands is adjustable. line equipment. 7. The device for twisting irregularly shaped strands according to claim 2 or 3, wherein the tilt posture restraining means is attached to the batten. 8. The heteromorphic element according to claim 2 or 3, wherein the tilt posture restraining means is disposed between the batten and the die assembly, and is revolved in synchronization with the planetary movement of the bobbin. Wire twisting device. 9 A device is provided between the bobbin and the batten to detect the tilted posture of the irregularly shaped wire on the cross section, and the detection output of this device is used to detect the tilted posture of the irregularly shaped wire pulled out from the bobbin. The device for twisting irregularly shaped strands according to any one of claims 1 to 8, wherein the inclination of the bobbin is controlled so as not to cause strain in the twisting direction.