JP2021147712A - Composite twisted wire manufacturing device and composite twisted wire manufacturing method - Google Patents

Abstract

To achieve improving and downsizing a composite twisted wire manufacturing device.SOLUTION: A manufacturing device of a composite twisted wire 15 has a first twisted wire made by twisting a plurality of wire materials and a second twisted wire made by twisting a plurality of wire materials 7a around the first twisted wire. The manufacturing device comprises: a cylindrical rotating cage 1 that guides the plurality of wire materials 7a; a plurality of wire material feeding bobbin 7 that is disposed to be lined up in a rotary shaft direction of the cylindrical rotating cage 1 in an inner space of the cylindrical rotating cage 1 and supplies the wire material 7a; a twisting port 4 for twisting the plurality of wire materials 7a around the first twisted wire; a twisted wire feeding bobbin 8 that is disposed between the cylindrical rotating cage 1 and the twisting port 4 and supplies the first twisted wire; and a bow-shaped pass line 2 that is fixed to the cylindrical rotating cage 1 and rotates around the twisted wire feeding bobbin 8. A second twisted wire formed of the plurality of wire materials 7a is formed by passing the plurality of wire materials 7a from the cylindrical rotating cage 1 through the bow-shaped pass line 2, supplying them to the twisting port 4 and twisting them around the first twisted wire.SELECTED DRAWING: Figure 1

Description

The present invention relates to a composite stranded wire manufacturing apparatus and a composite stranded wire manufacturing method.

Conventionally, there is a technique for manufacturing a stranded wire by twisting a plurality of wire rods mainly containing a conductor such as copper. As a technique for twisting a plurality of wires, Patent Document 1 (Japanese Patent Laid-Open No. 2006-328603) and Patent Document 2 (Japanese Patent Laid-Open No. 58-84625) describe a plurality of bobbins (Japanese Patent Laid-Open No. 58-84625) in a rotatable tubular rotor. Tubular twisting machines with supply reels) arranged in a row are described. Further, there is known a planetary twisting machine which is provided with a rotating plate in which a plurality of bobbins are supported and is a device for twisting wires supplied from those bobbins.

Japanese Unexamined Patent Publication No. 2006-328603 Japanese Unexamined Patent Publication No. 58-84625

The stranded wire is formed by, for example, twisting a plurality of wires so as to surround the outer circumference of one wire. Depending on the required strength or cross-sectional area of the stranded wire, a stranded wire having a multi-layered composite stranded structure (composite stranded wire) may be manufactured. In that case, the planetary type twisting machine has a relatively small installation space, but has a problem that the production capacity is lower than that of the tubular type twisting machine.

On the other hand, when a tubular stranded wire machine is used to manufacture a composite stranded wire obtained by twisting 37 wires, for example, 37 bobbins are arranged in a row in a rotatable tubular rotating cage. Can be considered. As described above, when the number of composite stranded wires to be manufactured increases and the composite stranded wires are multi-layered, the number of bobbins arranged in a row in the tubular rotary cage increases, and the length of the tubular rotary cage becomes long. As a result, there arises a problem that the space required for installing the composite stranded wire manufacturing apparatus becomes large.

An object of the present invention is to realize both improvement in performance and miniaturization of a composite stranded wire manufacturing apparatus.

Other objectives and novel features will become apparent from the description and accompanying drawings herein.

A brief overview of typical embodiments disclosed in the present application is as follows.

The composite stranded wire manufacturing apparatus according to one embodiment includes a first stranded wire in which a plurality of first wires are twisted together, and a second stranded wire in which a plurality of second wires are twisted around the first stranded wire. A compound stranded wire manufacturing apparatus comprising the above, wherein the rotating body for guiding the plurality of second wires and the rotating body are arranged side by side in the rotation axis direction of the rotating body in the internal space of the rotating body. A plurality of first feeders for supplying the second wire rod, a twist port for twisting the plurality of second wire rods around the first twisted wire, and a twisted port arranged between the rotating body and the twisted port, said. It has a second supply body that supplies the first twisted wire, and a pass line that is fixed to the rotating body and rotates around the second supply body, and the plurality of second wires are obtained from the rotating body. By supplying the twisted wire through the pass line and twisting the twisted wire around the first twisted wire, the second twisted wire composed of the plurality of second wire rods is formed.

Further, in the method for manufacturing a composite stranded wire according to an embodiment, a first stranded wire obtained by twisting a plurality of first wires and a second stranded wire obtained by twisting a plurality of second wires around the first stranded wire are used. A method for manufacturing a composite stranded wire including a stranded wire, wherein the rotating body for guiding a plurality of the second wires and the rotating body are arranged side by side in the rotation axis direction of the rotating body in the internal space of the rotating body. A plurality of first feeders around which the second wire is wound, a twisted port, and a second feeder arranged between the rotating body and the twisted port and wound with the first twisted wire. Using a composite stranded wire manufacturing apparatus having a pass line fixed to the rotating body and rotating around the second supply body, (a) the rotating body and the pass line from the plurality of first feed bodies. A step of supplying the plurality of second wire rods to the twist port, (b) a step of supplying the first twisted wire from the second feeder to the twist port, (c) the above (a). After the step and the step (b), the plurality of second wire rods are twisted around the first twisted wire at the twist port to form the second twisted wire composed of the plurality of second wire rods. It has a process.

According to one embodiment disclosed in the present application, it is possible to improve the performance and reduce the size of the composite stranded wire manufacturing apparatus.

It is a schematic side view of the composite stranded wire manufacturing apparatus which is an embodiment. It is a schematic side view which shows a part of the tubular rotary cage which constitutes the composite stranded wire manufacturing apparatus which is an embodiment, and a bobbin for feeding a wire rod by breaking a part. It is a schematic side view which shows the bow-shaped pass line which constitutes the composite stranded wire manufacturing apparatus which is an embodiment, and the stranded wire delivery bobbin which partially breaks. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is sectional drawing of the stranded wire formed by using the composite stranded wire manufacturing apparatus which is an embodiment. It is sectional drawing in the manufacturing process of the stranded wire formed by using the composite stranded wire manufacturing apparatus which is the modification 1 of embodiment. It is sectional drawing in the manufacturing process of the stranded wire formed by using the composite stranded wire manufacturing apparatus which is the modification 2 of embodiment.

Hereinafter, embodiments will be described in detail with reference to the drawings. In all the drawings for explaining the embodiment, the members having the same function are designated by the same reference numerals, and the repeated description thereof will be omitted. Further, in the following embodiments, the description of the same or similar parts is not repeated in principle except when it is particularly necessary.

(Embodiment)
The composite stranded wire manufacturing apparatus of the present embodiment is an apparatus for producing a composite stranded wire by twisting a wire rod around the outer circumference of the stranded wire, and includes a cylindrical rotating cage which is a rotating body and a bow-shaped pass line. It is a thing. The path line referred to in the present application refers to a place (orbit) through which the wire rod passes.

<Composite stranded wire manufacturing equipment and composite stranded wire manufacturing method>
Hereinafter, the composite stranded wire manufacturing apparatus and the composite stranded wire manufacturing method of the present embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a schematic side view of the composite stranded wire manufacturing apparatus according to the present embodiment. FIG. 2 is a schematic side view showing a part of a tubular rotary cage and a bobbin for feeding wire rods constituting the composite stranded wire manufacturing apparatus according to the present embodiment. FIG. 3 is a schematic side view showing a bow-shaped pass line and a bobbin for sending a stranded wire, which constitute the apparatus for manufacturing a composite stranded wire according to the present embodiment, with a part broken. FIG. 4 is a cross-sectional view taken along the line AA of FIG. FIG. 5 is a cross-sectional view of a stranded wire formed by using the composite stranded wire manufacturing apparatus according to the present embodiment.

FIG. 1 shows the overall configuration of the composite stranded wire manufacturing apparatus of this embodiment. The compound stranded wire manufacturing apparatus includes a tubular rotary cage 1, a bow-shaped pass line 2, a perforated plate 3, a twist port 4, a double capstan 5, and a winder 6. The composite stranded wire manufacturing apparatus twists a plurality of wire rods 7a supplied from the tubular rotary cage 1 from a stranded wire sending bobbin 8 arranged inside the bow-shaped pass line (bow-shaped guide) 2. It is an apparatus for forming a composite stranded wire 15 by twisting around the wire 8a. That is, each wire rod is sent from the left side to the right side in FIG. 1, twisted, and then wound up by the winder 6. In FIG. 1, a part of each of the wire rod 7a and the stranded wire 8a is shown through the other device. Further, in FIG. 1, the wire rod 7a is fed from the wire rod sending bobbin 7 only in the upward or downward direction of FIG. It is sent out in various directions toward the outer peripheral surface. In FIGS. 1 to 3, the rotation axes of the tubular rotating cage 1, the bow-shaped pass line 2, and the eye plate 3 are shown by a long-dashed line.

The tubular rotating cage 1 which is a rotating body is also called a tubular roller (cylindrical rotor) or a tubular. The tubular rotary cage 1 has a cylindrical shape extending in the horizontal direction (Y direction), and rotates about the center of a circle in the cross section in the lateral direction as a rotation axis. That is, the rotation axis of the tubular rotary cage 1 extends in the horizontal direction. In the tubular rotary cage 1, a plurality of internal spaces separated from each other exist side by side in a direction along the rotation axis. That is, the tubular rotary cage 1 has a plurality of internal spaces such as bamboo.

A bobbin 7 for sending a wire rod is arranged in each of the plurality of internal spaces. The wire rod delivery bobbin 7 is a drum around which the wire rod 7a is wound, and can be attached to and detached from the tubular rotating cage 1. The wire rod delivery bobbin 7 is a feeder that supplies the wire rod 7a to the bow-shaped pass line 2 side and the twist port 4 side through the tubular rotary cage 1. That is, the tubular rotary cage 1 is a rotating body that guides a plurality of wire rods 7a in the direction of the rotation axis of the tubular rotary cage 1. When the wire rod 7a wound around the wire rod sending bobbin 7 runs out, the old wire rod sending bobbin 7 is replaced with a new wire rod sending bobbin 7 around which the wire rod 7a is wound. In order to perform such replacement, an opening for inserting and removing the wire rod feeding bobbin 7 is provided on the side surface of the tubular rotary cage 1.

The wire rod 7a is, for example, a conducting wire made of a stranded wire made of copper (Cu) and having a diameter of 0.26 to 0.44 mm twisted in a plurality of wires (for example, tens to hundreds of wires). Each strand is, for example, a copper wire whose surface is plated with tin (Sn).

As shown in FIG. 2, the rotating shaft of the wire rod feeding bobbin 7 is supported by the cradle 10. The rotation axis of the wire rod delivery bobbin 7 is a horizontal direction (X direction) perpendicular to the Y direction, and the wire rod delivery bobbin 7 can rotate about the rotation axis. Further, the cradle 10 has a rotating shaft that overlaps with the rotating shaft of the tubular rotating cage 1, and is rotatable. The rotating shaft of the cradle 10 is supported by the tubular rotating cage 1, but the cradle 10 is not fixed to the tubular rotating cage 1. Further, the center of gravity of the cradle 10 and the wire rod sending bobbin 7 is located below the rotation axis of the tubular rotary cage 1. Therefore, when the tubular rotary cage 1 is rotated, the cradle 10 and the wire rod delivery bobbin 7 do not rotate together with the tubular rotary cage 1 even though they may shake. That is, even when the tubular rotary cage 1 is rotating, the rotation axis of the wire rod delivery bobbin 7 is kept substantially horizontal.

The wire rod 7a is supplied from the wire rod sending bobbin 7. The wire rod 7a sent out from the wire rod delivery bobbin 7 is adjusted in the traveling direction by a guide roll (not shown) arranged on the cradle 10, and then passes through the guide rolls (rising triple pulleys) 9a and 9b in order. It is guided to the outside of the tubular rotary cage 1. The guide roll 9a is supported by the tubular rotary cage 1 in the internal space of the tubular rotary cage 1, and the guide roll 9b is supported by the tubular rotary cage 1 on the outside (side surface side) of the tubular rotary cage 1. .. Each of the guide rolls 9a and 9b is a rotating body made of a disk having a groove on the outer circumference, and the wire rod 7a passes through the groove. Three of the guide rolls 9a and 9b are arranged side by side so as to draw an arc, whereby the trajectory of the wire rod 7a can be gently changed. That is, it is possible to reduce the load on the wire rod 7a and prevent deformation of the wire rod 7a (flat conductor) and disconnection of the wire constituting the wire rod 7a.

The wire rod 7a guided to the outside of the tubular rotary cage 1 is sent out to the bow-shaped pass line 2 side along the outer peripheral surface of the tubular rotary cage 1. In other words, the wire rod 7a is sent out to the bow-shaped pass line 2 side along the rotation axis of the tubular rotating cage 1. Even if it is described in the present application that it is sent out, each wire is actually conveyed by the pulling force at the twist port 4 or the tension by the double capstan 5 (see FIG. 1) or the winder 6. Therefore, no force is applied to the wire rod. A plate 1a having a surface along the radial cross section of the tubular rotary cage 1 is fixed to the outer peripheral surface of the tubular rotary cage 1, and the plate is placed in a direction along the rotation axis of the tubular rotary cage 1. The wire rod 7a passes through the inside of the through hole. This hole is a hole for a guide, but normally, the wire rod 7a does not touch the inner wall (plate 1a) in the hole.

Here, 18 wire rod delivery bobbins 7 are installed side by side in the tubular rotary cage 1. Therefore, during the operation of the composite stranded wire manufacturing apparatus, a maximum of 18 wire rods 7a are conveyed to the bow-shaped pass line 2 side along the outer circumference of the tubular rotary cage 1. That is, 18 wire rods 7a are supplied from the 18 wire rod delivery bobbins 7. The distances of each of the 18 wires 7a from the rotation axis of the tubular rotating cage 1 are, for example, the same.

As described above, the composite stranded wire manufacturing apparatus of the present embodiment has a tubular type wire rod supply unit. The tubular type wire rod supply unit (tubular type supply unit) referred to here includes a tubular rotary cage 1 and a wire rod delivery bobbin 7. Next, the configurations of the bow-shaped pass line 2, the bobbin 8 for sending the stranded wire, the panel 3 and the stranded port 4 will be described with reference to FIGS. 1, 3 and 4.

As shown in FIGS. 1, 3 and 4, in the Y direction along the rotation axis of the tubular rotary cage 1, the tubular rotary cage 1, the stranded wire feeding bobbin 8, the panel 3 and the twist port 4 are arranged side by side. There is. The stranded wire sending bobbin 8 and the bow-shaped pass line 2 provided so as to avoid the stranded wire sending bobbin 8 are called skips.

The rotating shaft of the stranded wire feeding bobbin 8 is supported by the cradle 11. The rotation axis of the stranded wire delivery bobbin 8 is a horizontal direction (X direction) perpendicular to the Y direction, and the stranded wire delivery bobbin 8 can rotate about the rotation axis. Further, the cradle 11 has a rotating shaft that overlaps with the rotating shaft of the tubular rotating cage 1, and is rotatable. One end of the rotating shaft of the cradle 11 is supported on the cylindrical rotating cage 1 side, the other end is supported on the eye plate 3 side, and the cradle 11 is not fixed to the tubular rotating cage 1 and the eye plate 3. Further, the center of gravity of the cradle 11 and the bobbin 8 for sending the stranded wire is located below the rotation axis of the tubular rotary cage 1. Therefore, when the tubular rotary cage 1 and the bow-shaped pass line 2 are rotated, the cradle 11 and the stranded wire delivery bobbin 8 rotate together with the tubular rotary cage 1 and the bow-shaped pass line 2 even though they may sway. There is no such thing. That is, even when the bow-shaped pass line 2 is rotating, the rotation axis of the stranded wire delivery bobbin 8 is kept substantially horizontal.

As shown in FIGS. 3 and 4, four bow-shaped pass lines are formed around the stranded wire feeding bobbin 8 so as to surround the stranded wire feeding bobbin 8 around the rotation axis of the tubular rotary cage 1. 2 are provided side by side. The rotation shaft of the tubular rotary cage 1 referred to here is a rotation shaft of four bow-shaped pass lines 2 that can rotate around the bobbin 8 for sending stranded wires. The distance between each of the four bow-shaped pass lines 2 from the rotation axis is, for example, the same.

The stranded wire delivery bobbin 8 is a drum around which the stranded wire 8a is wound, and can be attached to and detached from the cradle 11. The stranded wire delivery bobbin 8 is a feeder that supplies the stranded wire 8a to the twist port 4 side through the panel 3. When the stranded wire 8a wound around the stranded wire delivery bobbin 8 is exhausted, the old stranded wire delivery bobbin 8 is replaced with a new stranded wire delivery bobbin 8 around which the stranded wire 8a is wound.

Due to such exchange, the four bow-shaped pass lines 2 are not arranged at equal intervals. That is, as shown in FIG. 4, the first to fourth bow-shaped pass lines 2 are arranged in order on the outer circumference of the stranded wire delivery bobbin 8. Here, the distance between the first bow-shaped pass line 2 and the second bow-shaped pass line 2 on the circumference centered on the rotation axis of each bow-shaped pass line 2 is the second bow-shaped pass line 2. It is larger than the distance between the pass line 2 and the third bow-shaped pass line 2. Since the distance between some of the bow-shaped pass lines 2 is large as described above, the stranded wire sending bobbin 8 can be easily attached and detached by passing the stranded wire sending bobbin 8 between the bow-shaped pass lines 2. Can be done. In FIG. 4, the stranded wire 8a is not shown.

As shown in FIGS. 3 and 4, one bow-shaped pass line 2 includes the bow-shaped rail 12 and the outer surface of the bow-shaped rail 12, that is, the bow-shaped rail 12 on the side opposite to the rotation axis side. It consists of a plurality of guide rolls 9c supported on the surface. The bow-shaped rail 12 is a bow-shaped metal plate that draws an arc from the tubular rotary cage 1 side to the eye plate 3 side so as to avoid the stranded wire delivery bobbin 8. The radius of curvature of the bow-shaped rail 12 is designed to be large in order to prevent deformation of the wire rod 7a and the wires constituting the wire rod 7a, and the bow-shaped rail 12 draws a smooth arc. One end of the bow rail 12 is supported by the tubular rotary cage 1, and the other end is supported by the eye plate 3. Therefore, when the tubular rotary cage 1 is rotated, the bow rail 12 and the eye plate 3 rotate together with the tubular rotary cage 1 about the rotation axis of the tubular rotary cage 1.

The stranded wire 8a is a conductor obtained by twisting 19 stranded wires made of copper and having a diameter of 0.26 to 0.44 mm and twisting a plurality of strands (for example, tens to hundreds). That is, the stranded wire 8a has a structure in which 19 wires similar to the wire rod 7a are twisted together. Therefore, the diameter of the stranded wire 8a is larger than the diameter of the wire rod 7a. The stranded wire 8a may be a 7-stranded or 19-stranded stranded wire, but here, as an example, a case where the 19-stranded stranded wire 8a is supplied from the stranded wire feeding bobbin 8 will be described. do.

The wire rod 7a sent out from the tubular rotary cage 1 to the bow-shaped pass line 2 is adjusted in the traveling direction along the bow-shaped rail 12 by the guide roll 9c, and is guided to the eye plate 3. The eye plate (aggregate plate) 3 is formed with 18 through holes penetrating from the bow-shaped pass line 2 side to the twist port 4 side side by side so as to surround the rotation axis of the eye plate 3. One wire rod 7a passes through the through hole. Further, the eye plate 3 is provided with a through hole penetrating from the bow-shaped pass line 2 side to the twist port 4 side at a position overlapping the rotation axis of the eye plate 3, and the stranded wire 8a is provided in the through hole. Pass.

As shown in FIG. 4, of the four bow-shaped pass lines 2, each of the two bow-shaped pass lines 2 includes four guide rolls 9c arranged in the rotation direction of the bow-shaped pass line 2, and the other two. Each of the bow-shaped pass lines 2 includes five guide rolls 9c arranged in the direction of rotation. As a result, the four bow-shaped pass lines 2 guide a total of 18 wire rods 7a to the eye plate 3. In this way, the 18 wire rods 7a are supplied to the panel 3 in a non-uniformly arranged manner rather than at equal intervals. The eye plate 3 has a role of adjusting these wire rods 7a so as to be arranged at intervals close to equal intervals on the circumference centered on the rotation axis. At this time, the wire rod 7a does not directly touch the eye plate 3, but is supported by the eye plate 3, and the trajectory is corrected by the guide rolls 9d provided before and after the through hole in the Y direction.

The wire rod 7a sent out from the panel 3 passes through the guide roll 9d and gathers on a die (not shown) constituting the twist port 4, where the wire rod 7a is twisted so as to cover the outer periphery of the stranded wire 8a. As a result, the stranded wire 8a and the wire rod 7a that have been squeezed by the die and passed through the stranded port 4 form the composite stranded wire 15. In this way, the composite stranded wire 15 made of 19 wires can be formed. The twist port 4 is a device fixed to the ground, not a rotating body.

The composite stranded wire 15 sent out from the stranded port 4 is wound by a double capstan 5 composed of a rotating body, and then wound by a winding machine (winding drum) 6. As described above, the production of the composite stranded wire 15 is completed.

Here, it has been described that the tubular type wire rod supply unit and the bow-shaped pass line 2 are combined and the wire rod 7a is twisted to the stranded wire 8a. However, the stranded wire 8a may be manufactured by any method. good. For example, the stranded wire 8a can be manufactured by a tubular stranded wire machine, a planetary stranded wire machine, or the like.

Next, the structure of the composite stranded wire 15 covered with the insulating coating will be described with reference to FIG. As shown in FIG. 5, the composite stranded wire 15 of the present embodiment is a stranded wire having a three-layer structure. That is, the composite stranded wire 15 includes one central wire rod 13, six first-layer wire rods 13a surrounding the wire rod 13, and twelve second-layer wire rods 13 and 13a surrounding the circumference of the seven wire rods 13 and 13a in total. The wire rod 13b and a total of 19 wire rods 13, 13a and 18 wire rods 13c in the third layer surrounding the periphery of the wire rods 13, 13a and 13b are provided. A total of 19 wires 13, 13a and 13b correspond to the stranded wire 8a shown in FIG. 1, and the 18 wires 13c of the third layer correspond to the wire 7a shown in FIG. The outer circumference of the composite stranded wire 15 composed of a total of 37 wire rods 13, 13a to 13c is covered with an insulator 14 which is an insulating coating.

A total of 19 wires 13, 13a and 13b constitute the first stranded wire, and 18 wires 13c in the third layer around the first stranded wire form the second stranded wire. That is, the composite stranded wire 15 is composed of a first stranded wire composed of a plurality of wires 13, 13a and 13b, and a second stranded wire composed of a plurality of wires 13c twisted around the first stranded wire. There is.

As described above, the composite stranded wire 15 of the present embodiment has the wire rods 13a to 13c which are overlapped in a plurality of layers in the radial direction of the wire rod 13 from the central wire rod 13. In other words, the composite stranded wire 15 has a plurality of layered structures (a plurality of stranded wire structures).

<Effect of this embodiment>
When manufacturing a composite stranded wire, it is possible to use a tubular twisting machine in which a plurality of bobbins are arranged in a row in a rotatable tubular rotating cage and a plurality of wires guided by the tubular rotating cage are twisted together. Conceivable. In addition, when manufacturing composite stranded wire, a planetary stranded wire machine is provided with a rotating plate in which multiple bobbins are lined up and supported on the circumference surrounding the rotating shaft, and the wires supplied from those bobbins are twisted together. It is conceivable to use it.

If the number of wire rods to be twisted to form the composite stranded wire increases and the number of bobbins that are the feeders of the wire rod increases, there is a problem that the manufacturing apparatus for the composite stranded wire becomes large. Here, the planetary stranded wire machine has an advantage that the occupied area is relatively small and the maximum width is small. However, the planetary type twisting machine has a large mechanical loss due to friction and the like, and has a problem that the production capacity (production speed) is lower than that of the tubular type twisting machine.

On the other hand, for example, when producing a composite stranded wire by twisting 37 wires, a tubular stranded wire machine in which 37 bobbins are arranged in a row in a rotatable tubular rotating cage is used. Can be considered. In this way, when the composite stranded wire to be manufactured is multi-layered, the number of bobbins arranged in a row in the tubular rotary cage increases and the length of the tubular rotary cage becomes longer when only the tubular twister is used. .. As a result, the space required to install the composite stranded wire manufacturing apparatus becomes large, so that the composite stranded wire manufacturing apparatus presses the inside of the factory building, or the composite stranded wire manufacturing apparatus cannot be accommodated in the building. Occurs.

Therefore, the present inventors prepare a pre-manufactured stranded wire wound around a bobbin, and twist the wire rod around the stranded wire to manufacture a compact stranded wire having a plurality of layer structures. I considered to make it.

As a place to arrange the bobbin for supplying the stranded wire forming the center (core) of the composite stranded wire, it is conceivable to arrange it at the starting point of the flow of the wire rod (the left end of the tubular rotary cage 1 shown in FIG. 1). However, in this case, it is necessary to guide the relatively thick stranded wire to the twist port along the outer peripheral surface of the tubular rotary cage so as to avoid the center of the tubular rotary cage, as with other wire rods. Further, as a place where the bobbin for supplying the stranded wire is arranged, it is conceivable that the bobbin is arranged not on the rotation axis of the tubular rotary cage but at a position adjacent to the tubular rotary cage, for example, in the radial direction of the tubular rotary cage. However, in these cases, when guiding the relatively thick stranded wire, the stranded wire receives a large resistance due to a guide roll or the like, and there is a possibility that the conductor becomes flat. Further, when the stranded wire is guided so as to pass through the outer peripheral surface of the tubular rotary cage, the stranded wire may be loosened and the twist pitch may be clogged due to the influence of the rotation of the tubular rotary cage.

Therefore, in the present embodiment, the stranded wire sending bobbin 8 for supplying the stranded wire 8a forming the center (core) of the composite stranded wire 15 is located at the position closest to the stranded port 4 among the plurality of arranged feeders. It is placed in. In other words, the bobbin 8 for sending the stranded wire is installed in front of the stranded port 4 in the flow direction of each wire rod. As a result, the stranded wire 8a supplied from the stranded wire feeding bobbin 8 can be linearly fed to the stranded wire without receiving unnecessary resistance. Therefore, it is possible to prevent the conductor flattening, the conductor loosening, and the twist pitch clogging of the stranded wire 8a, and improve the reliability of the composite stranded wire 15 and the manufacturing apparatus for the composite stranded wire, respectively. Further, in order to reduce the resistance applied to the stranded wire 8a at the place where the trajectory of the stranded wire 8a is changed, it is not necessary to guide the stranded wire 8a with a large curve, and it is possible to prevent the size of the composite stranded wire manufacturing apparatus from becoming large. can. Further, in order to reduce the resistance applied to the stranded wire 8a, it is not necessary to reduce the production speed of the composite stranded wire 15. Therefore, the performance of the composite stranded wire manufacturing apparatus can be improved.

Here, if the size of the stranded wire feeding bobbin 8 is about the same as the size of the wire rod feeding bobbin 7, it seems that it is not necessary to provide the bow-shaped pass line 2. However, even if the lengths of one wire rod 7a and one stranded wire 8a used for forming the composite stranded wire by the composite stranded wire manufacturing apparatus are the same, the stranded wire 8a is the wire rod 7a. Since it is thicker, the diameter of the stranded wire feeding bobbin 8 needs to be larger than the diameter of the wire rod feeding bobbin 7. That is, if the diameter of the stranded wire feeding bobbin 8 is about the same as the diameter of the wire rod sending bobbin 7, the length of the composite stranded wire 15 that can be manufactured becomes short, and there arises a problem that the production capacity is lowered.

Therefore, here, the bow-shaped pass line 2 is provided in order to send out the wire rod 7a so as to avoid the stranded wire delivery bobbin 8 larger than the wire rod delivery bobbin 7 and to avoid burdening the wire rod 7a. .. Thereby, the composite stranded wire 15 can be manufactured by using the stranded wire sending bobbin 8 having a diameter larger than the diameter of the tubular rotary cage 1. Therefore, for example, it is possible to form a composite stranded wire having a layer structure of four or more layers. The diameter of the tubular rotary cage 1 referred to here refers to the maximum diameter of the tubular rotary cage 1 that surrounds the circumference of the wire rod delivery bobbin 7 in the radial direction of the tubular rotary cage 1. Further, the diameter of the bobbin referred to here is not the diameter of the shaft of the bobbin around which the wire rod (twisted wire) is wound, but the diameter of either of the two disks sandwiching the wound wire rod in the axial direction of the bobbin. That is, it refers to the maximum diameter of the bobbin.

As described above, the composite stranded wire manufacturing apparatus of the present embodiment includes the first stranded wire (twisted wire 8a) in which a plurality of first wire rods (wire rods 13, 13a and 13b) are twisted together, and the first stranded wire. It is a manufacturing apparatus of a composite stranded wire (composite stranded wire 15) including a second stranded wire (a plurality of wire rods 7a (13c)) in which a plurality of second wire rods (wire rod 7a) are twisted around the above. Here, the composite stranded wire manufacturing apparatus includes a rotating body (cylindrical rotating cage 1) that guides the plurality of second wires in the rotation axis direction, and a rotation axis direction of the rotating body in the internal space of the rotating body. A plurality of first feeders (bobins 7 for wire rod delivery), each of which supplies the second wire rod, and a twist port (a twist port) in which the plurality of second wire rods are twisted around the first twisted wire. The twist port 4), the second supply body (the bobbin 8 for sending the twisted wire) which is arranged between the rotating body and the twisting port and supplies the first twisted wire, and the rotating body are fixed to the rotating body. It has a pass line (bow-shaped pass line 2) that rotates around the second feeder. The composite stranded wire manufacturing apparatus supplies the plurality of second wire rods from the rotating body to the twist port through the pass line and twists the plurality of second wire rods around the first stranded wire, thereby causing the plurality of second wire rods. The second stranded wire composed of is formed.

Further, in the method for manufacturing a composite stranded wire according to the present embodiment, (a) the rotating body and the pass line are passed in order from the plurality of first feeders by using the composite stranded wire manufacturing apparatus. A step of supplying the plurality of second wire rods to the twist port, (b) a step of supplying the first twisted wire from the second feeder to the twist port, and (c) the step (a) and the step (the step). b) After the step, there is a step of forming the second twisted wire composed of the plurality of second wires by twisting the plurality of second wires around the first twisted wire at the twisted port. It is a thing. Here, the step (a) and the step (b) are performed at the same time. That is, the first stranded wire and the second stranded wire are supplied to the twist port at the same time.

As a result, in the present embodiment, the advantage of the tubular twisting machine having a higher production capacity than the planetary twisting machine is utilized, and the bobbin for sending the twisted wire and the bow-shaped pass line 2 are connected to the tubular supply section. By combining the above, the total length of the apparatus for producing a composite stranded wire having a plurality of layer structures can be reduced. That is, the number of wire rod delivery bobbins 7 arranged in a row in the tubular rotary cage 1 can be reduced from 37 to 18. Therefore, it is possible to improve the performance of the composite stranded wire manufacturing apparatus and to reduce the size at the same time. For example, the total length of the device including the tubular rotary cage 1, the bow-shaped pass line 2, and the twist port 4 of the composite stranded wire manufacturing apparatus of the present embodiment is a tubular rotary cage in which 37 bobbins can be installed. It is about half of the total length of the device including the twist port.

Further, for example, when guiding a wire rod composed of about 100 strands of 0.26 mm twisted in a composite stranded wire manufacturing apparatus, if an attempt is made to change the traveling direction of the wire rod through a die fixed to the apparatus. , There is a risk that the wire will break due to contact resistance. Therefore, in the present embodiment, in the process of supplying the wire rod 7a from the wire rod sending bobbin 7 to the twist port 4, only the plurality of guide rolls 9a to 9e are brought into contact with each other, and the die or the like which is not a rotating body is brought into contact with the wire rod 7a. Not. As a result, the resistance of the wire can be reduced and the wire can be prevented from being cut or deformed. Therefore, the reliability of the composite stranded wire manufacturing apparatus and the composite stranded wire 15 can be improved, and the yield of the composite stranded wire can be improved.

Here, the case where the composite stranded wire 15 has a three-layer stranded wire structure has been described, but the number of layers of the composite stranded wire 15 may be two. In the case of two layers, the number of bobbins 7 for sending wire rods in the tubular rotary cage 1 is, for example, 12. Further, the number of layers of the composite stranded wire 15 may be 4 or more. In the case of four layers, the number of bobbins 7 for sending wire rods in the tubular rotary cage 1 is, for example, 24. The number or width of the bow-shaped pass lines 2 may be increased or decreased according to the number of bobbins 7 for sending wire rods, that is, the number of wire rods 7a.

<Modification example 1>
FIG. 6 is a cross-sectional view during the manufacturing process of the stranded wire formed by using the composite stranded wire manufacturing apparatus which is the first modification of the present embodiment.

As shown in FIG. 6, the outermost layer of the composite stranded wire may be formed by twisting a plurality of times. That is, when the outermost layer of the composite stranded wire is a total of 18 as shown in FIG. 5, nine wires 13c are twisted with a gap in the first step, for example, by skipping one (see FIG. 6). ), Then, nine wire rods 13c may be twisted in the second step so as to fill a gap between adjacent wire rods 13c, thereby forming an outermost layer composed of a total of 18 wire rods 13c. .. In this case, the stranded wire wound by the winder 6 (see FIG. 1) in the first step is installed in the cradle 11 (see FIG. 3) to perform the second step.

That is, in the first step, a third stranded wire composed of the first stranded wire and a wire rod 13c (second stranded wire) twisted with a gap around the first stranded wire is formed, and the third stranded wire is wound up. The bobbin obtained by winding with the machine 6 is replaced with the bobbin 8 for stranded wire delivery as the third feeder. Next, as the second step, a step of supplying a plurality of wire rods 7a to the twist port 4 and a step of supplying a third twisted wire from the third feeder to the twist port 4 are performed, and the twist port 4 is used. A step of twisting the wire rod 7a into the above-mentioned gap around the third stranded wire is performed.

As described above, the composite stranded wire manufacturing apparatus of the present modification is between the wires (for example, the wires 13b shown in FIG. 6) constituting the surface layer of the stranded wires supplied from the feeder (bobbin) on the cradle 11. If there is no gap for embedding the wire, the wire is twisted with a gap on the surface layer of the stranded wire (the first step described above). Further, in the composite stranded wire manufacturing apparatus of this modification, the wire rods are sandwiched between the wire rods (for example, the wire rods 13c shown in FIG. 6) constituting the surface layer of the stranded wires supplied from the feeder (bobbin) on the cradle 11. If there is a gap to embed, the wire rod is twisted into the gap (the second step above).

As a result, the number of wire rod delivery bobbins 7 arranged in a row in the tubular rotary cage 1 can be reduced. Therefore, the composite stranded wire manufacturing apparatus can be further miniaturized. Further, it becomes easy to manufacture a composite stranded wire having a layer structure of four or more layers.

Here, nine wire rods 13c are twisted together with a gap (for example, by skipping one wire) in the first step. In this way, even if the adjacent wire rods 13c are separated from each other, 9 It can be said that the wire rod 13c of the book constitutes the third layer (second stranded wire).

<Modification 2>
FIG. 7 is a cross-sectional view during the manufacturing process of the stranded wire formed by using the composite stranded wire manufacturing apparatus which is the second modification of the present embodiment.

As shown in FIG. 7, the outermost layer of the composite stranded wire may be formed by twisting a plurality of times. That is, when the outermost layer of the composite stranded wire is a total of 18 as shown in FIG. 5, six wires 13c are twisted with a gap in the first step, for example, by skipping two wires (see FIG. 7). ), Six wire rods 13c are twisted at a position adjacent to the wire rod 13c in the second step, and six wire rods are further embedded in the gap between the adjacent wire rods 13c in the third step. 13c may be twisted together to form an outermost layer composed of a total of 18 wire rods 13c.

That is, in the first step, a third stranded wire composed of the first stranded wire and a wire rod 13c (second stranded wire) twisted with a gap around the first stranded wire is formed, and the third stranded wire is wound up. The bobbin obtained by winding with the machine 6 is replaced with the bobbin 8 for stranded wire delivery as the third feeder. Next, as the second step, a step of supplying a plurality of wire rods 7a to the twist port 4 and a step of supplying a third twisted wire from the third feeder to the twist port 4 are performed, and the twist port 4 is used. A step of twisting the wire rod 7a into the above-mentioned gap around the third stranded wire is performed. However, at this time, the gap is not completely embedded, and there is room for further twisting the wire rod. Subsequently, a fourth stranded wire composed of a third stranded wire and a wire rod 13c (second stranded wire) twisted with a gap around the third stranded wire is formed, and the fourth stranded wire is wound by a winder 6. The bobbin thus obtained is replaced with a third feeder as the fourth feeder. Next, as the third step, a step of supplying a plurality of wire rods 7a to the twist port 4 and a step of supplying the fourth twisted wire from the fourth feeder to the twist port 4 are performed, and the twist port 4 is used. A step of twisting the wire rod 7a into the above-mentioned gap around the fourth stranded wire is performed. As a result, the above gap is embedded.

In other words, there are a plurality of steps in which the feeder obtained in the first step, in which the stranded wire having a gap in the outermost layer is wound, is replaced with the feeder on the cradle 11, and the stranded wire and the wire rod 7a are twisted together. By repeating this process, the above gap can be filled, whereby a composite stranded wire can be manufactured.

As a result, the number of wire rod delivery bobbins 7 arranged in a row in the tubular rotary cage 1 can be reduced. Therefore, the composite stranded wire manufacturing apparatus can be further miniaturized. Further, it becomes easy to manufacture a composite stranded wire having a layer structure of four or more layers.

Although the inventions made by the present inventors have been specifically described above based on the embodiments, the present invention is not limited to the above embodiments and can be variously modified without departing from the gist thereof. Needless to say.

1 Cylindrical rotary cage 2 Bow-shaped pass line 3 Eye plate 4 Twist port 7 Wire rod delivery bobbin 7a Wire rod 8 Twist wire delivery bobbin 8a Twist wire 9 Alloy element wire (metal wire)
15 composite stranded wire

Claims (14)

A composite stranded wire manufacturing apparatus including a first stranded wire obtained by twisting a plurality of first wires and a second stranded wire obtained by twisting a plurality of second wires around the first stranded wire.
A rotating body that guides the plurality of second wires in the direction of the rotation axis,
In the internal space of the rotating body, a plurality of first feeders arranged side by side in the rotation axis direction of the rotating body, each of which supplies the second wire rod,
A twist port for twisting the plurality of second wires around the first twisted wire, and a twist port for twisting the plurality of second wires.
A second feeder, which is arranged between the rotating body and the twist port and supplies the first twisted wire,
A path line fixed to the rotating body and rotating around the second feeder,
Have,
The plurality of second wire rods are supplied from the rotating body to the twist port through the pass line, and twisted around the first twisted wire to obtain the second twisted wire composed of the plurality of second wire rods. A compound stranded wire manufacturing device to be formed. In the composite stranded wire manufacturing apparatus according to claim 1,
The composite stranded wire is a composite stranded wire manufacturing apparatus having a stranded wire structure having three or more layers. In the composite stranded wire manufacturing apparatus according to claim 1 or 2.
A composite stranded wire manufacturing apparatus in which the diameter of the first stranded wire is larger than the diameter of the second stranded wire. In the composite stranded wire manufacturing apparatus according to any one of claims 1 to 3,
The second wire rod is a composite stranded wire manufacturing apparatus in which the second wire rod comes into contact with only a plurality of guide rolls in the process of being supplied from the first feeder to the twist port. In the composite stranded wire manufacturing apparatus according to any one of claims 1 to 4.
Eighteen first feeders are arranged in the internal space of the rotating body.
From the 18 first feeders, 18 of the second wires are supplied.
The first stranded wire has a stranded wire structure composed of 19 first stranded wires.
The first stranded wire is
One of the 19 first wires and
A first layer formed by twisting 6 of the 19 first wires around the one first wire, and
A second layer formed by twisting 12 of the 19 first wires around the first layer, and
With
At the twist port, a composite stranded wire manufacturing apparatus in which the 18 second wires are twisted around the second layer. In the composite stranded wire manufacturing apparatus according to any one of claims 1 to 4.
At the twist port, a composite stranded wire manufacturing apparatus in which a plurality of the second wire rods are twisted around the first stranded wire with a gap between them. In the composite stranded wire manufacturing apparatus according to any one of claims 1 to 4.
When there is no gap for embedding the second wire between the first wires constituting the surface layer of the first stranded wire, a gap is provided on the surface layer of the first stranded wire to form the second wire. Twisted,
An apparatus for producing a composite stranded wire, in which, when there is a gap in which the second wire is embedded between the first wires constituting the surface layer of the first stranded wire, the second wire is twisted into the gap. A method for manufacturing a composite stranded wire, comprising a first stranded wire obtained by twisting a plurality of first wires and a second stranded wire obtained by twisting a plurality of second wires around the first stranded wire.
A rotating body that guides the plurality of second wires, and
In the internal space of the rotating body, a plurality of first feeders arranged side by side in the rotation axis direction of the rotating body and wound with the second wire rod,
Twist and
A second feeder arranged between the rotating body and the stranded wire and wound with the first stranded wire,
A path line fixed to the rotating body and rotating around the second feeder,
Using a composite stranded wire manufacturing equipment with
(A) A step of supplying the plurality of second wires to the twisting port by passing the rotating body and the pass line in order from the plurality of first feeders.
(B) A step of supplying the first twisted wire from the second feeder to the twisted port.
(C) After the step (a) and the step (b), the plurality of second wire rods are twisted around the first twisted wire at the twist port to form the plurality of second wire rods. The process of forming the second stranded wire,
A method for manufacturing a composite stranded wire. In the method for manufacturing a composite stranded wire according to claim 8,
The composite stranded wire is a method for manufacturing a composite stranded wire having a stranded wire structure having three or more layers. In the method for producing a composite stranded wire according to claim 8 or 9.
A method for producing a composite stranded wire, wherein the diameter of the first stranded wire is larger than the diameter of the second stranded wire. In the method for producing a composite stranded wire according to any one of claims 8 to 10.
In the step (a), the method for producing a composite stranded wire in which the second wire rod comes into contact with only a plurality of guide rolls in the process of being supplied from the first feeder to the twist port. In the method for producing a composite stranded wire according to any one of claims 8 to 11.
Eighteen first feeders are arranged in the internal space of the rotating body.
From the 18 first feeders, 18 of the second wires are supplied.
The first stranded wire has a stranded wire structure composed of 19 first stranded wires.
The first stranded wire is
With one of the first wires
One of the 19 first wires and
A first layer formed by twisting 6 of the 19 first wires around the one first wire, and
A second layer formed by twisting 12 of the 19 first wires around the first layer, and
With
In the step (c), a method for producing a composite stranded wire in which the 18 second wires are twisted around the second layer at the stranded port. In the method for producing a composite stranded wire according to any one of claims 8 to 11.
In the step (c), the plurality of second wire rods are twisted around the first twisted wire with a gap between them at the twisted port, whereby the first twisted wire and the second twisted wire are formed. Form the third stranded wire,
(D) After the step (c), the step of winding the third stranded wire around the third feeder with a winder,
(E) A step of replacing the third feeder with the second feeder after the step (d).
(F) After the step (e), a step of supplying the plurality of second wire rods to the twist port by passing the rotating body and the pass line in order from the plurality of first feeders.
(G) After the step (e), a step of supplying the third twisted wire from the third feeder to the twist port.
(H) A step of twisting the plurality of second wires into the gap around the first twisted wire at the twisted port after the step (f) and the step (g).
A method for manufacturing a composite stranded wire, further comprising. In the method for manufacturing a composite stranded wire according to claim 13,
A method for producing a composite stranded wire, which fills the gap by performing the steps (d) to (h) a plurality of times.

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