JP2915656B2 - Method for manufacturing finned stranded wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a finned stranded wire used as a low wind noise type or hard-to-wear type overhead transmission line or overhead ground wire.

[0002]

2. Description of the Related Art Conventionally, twisted wires such as overhead power transmission lines and overhead ground wires are manufactured as shown in FIG. That is, the bobbin 15 of the twisting machine 13 is rotated around the traveling stranded core material (usually a stranded wire or a strand) 11, and the strand 17 pulled out from the bobbin 15 is moved around the outer periphery of the stranded wire core 11. A wooden twisting die 19 is fixedly arranged at the position where it is twisted, and a leather strap 21 with a lace is wound in front of it, and an equal tightening force is applied to each strand 17 from the outer periphery to produce a twisted wire 23. Was.

[0003]

However, in this method, as shown in FIG. 5, a finned wire 29 in which a wire 27 having a fin 25 on the outermost layer and a wire 17 having no fin are twisted. In order to manufacture the finned wire 27, the fin 25 is crushed because the finned wire 27 progresses while rotating in the twisted die 19 and the leather 21 in a fixed state, and the finned stranded wire with good fins Could not be manufactured.

[0004]

SUMMARY OF THE INVENTION The present invention provides a method for manufacturing a finned stranded wire which solves the above-mentioned problems, and has a structure in which fins are formed on the inner surface when the outermost layer is twisted. using split of <br/> Yokuchi die having grooves for guiding the fins of wires, die the Yokuchi die, which is supported by the fixed support so as to be rotatable about the stranded core The outermost layer is twisted in a state where the fin of the strand wire with a fin is attached to the holder, the fin of the finned wire is passed through the groove, and the rotation of the die holder to which the twisting die is attached is free. It is.

[0005]

In this manner, the fin of the finned wire passes through the groove of the twisted die, and the twisted die freely rotates following the rotation of the finned wire. It is possible to manufacture a finned stranded wire without fins. Also
Twisted wire with fins
When starting the production of
After assembling, put a twisting die on it and twist
Mouth dies can be attached to the die holder
This makes it easy to prepare for the start of production in a short time.
it can.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention. In this method, when twisting the finless wire 17 and the finned wire 27 constituting the outermost layer on the outer periphery of the stranded wire core material 11, a twisting die 31 as shown in FIGS. 2 and 3 is used. . The twisting die 31 is a two-piece cylindrical body made of plastic or metal, in which a groove 33 for guiding the fin 25 (see FIG. 5) of the finned wire 27 is formed in a spiral shape on the inner surface. .

[0007] As shown in FIG.
The stranded core 11 is attached to the front end of a cylindrical die holder 35 passing therethrough, and the die holder 35 is rotatably supported by a fixed support 37 via a bearing 39.
Thus, the twisting die 31 can freely rotate at a position where the wires 17 and 27 are twisted.

When the twist of the twisting die 31 is made free and the fins of the wire 27 with fins are passed through the groove 33, the fins are not pressed from the outer periphery. In addition, since the twisting die 31 rotates following the rotation of the finned wire 27, a good finned stranded wire 29 can be manufactured without fins being crushed.

[0009]

As described above, according to the present invention, when twisting a finned wire to the outermost layer, the fin can be twisted without crushing the fin, and a good finned stranded wire can be manufactured. can do. Twisted die is split into two
When starting the production of stranded wire with fins
Then, after assembling the outermost strands into a predetermined arrangement,
Then, put a twisting die on the die
Can be attached to the
Preparatory work can be easily performed in a short time.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a method for manufacturing a finned stranded wire according to one embodiment of the present invention.

FIG. 2 is a front view of the twisting die used in the method of FIG. 1;

FIG. 3 is a side view of the twisting die used in the method of FIG. 1;

FIG. 4 is an explanatory view showing a conventional method for manufacturing a stranded wire.

FIG. 5 is a sectional view showing an example of a finned stranded wire.

[Explanation of symbols]

11: twisted wire core material 13: twisted wire machine 15: bobbin 17: finless wire 25: fin 27: finned wire 29: finned strand 31: twisted die 33: groove 35: die holder 37: fixed Support 39: Bearing

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01B 13/00 B21F 7/00 H01B 5/08

Claims (1)

(57) [Claims] 1. A method for producing a finned stranded wire in which a finned wire and a finless wire are twisted in an outermost layer,
When twisting the outermost layer, use a two- piece twisting die with grooves formed on the inner surface to guide the fins of the finned wire, so that this twisting die can rotate freely around the core of the twisted wire Attached to the die holder supported by the fixed support, and passing the fin of the finned wire through the groove,
A method for producing a finned stranded wire, characterized in that the outermost layer is twisted in a state where the rotation of a die holder to which a twisting die is attached is free.