JPH03260186A - Resin-coated twisted wire - Google Patents

Abstract

PURPOSE:To obtain the subject product having high durability and hardly causing curling, etc., due to a stable twisted structure without rubbing of the mutual element wires by embedding the plural element wires composed of superfine metal wires in an intertwisted state without contact thereof in a resin matrix. CONSTITUTION:The objective product obtained by embedding single element wires 2 composed of superfine metal wires or twisted element wires prepared by intertwisting the aforementioned plural superfine metal wires in an intertwisted state without mutual contact thereof in a resin matrix 3. The aforementioned product ie obtained by, e.g. forming resin films on the outer surfaces of the single element wires 2 or twisted element wires, then intertwisting mutual resin-coated element wires, subsequently coating the resultant twisted wires with a resin coating layer, then heating the coated element wires and melt integrating the aforementioned respective resin films of the element wires with the above-mentioned resin coating layer.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to, for example, a control cable 1 reinforced cord information communication cable that connects pulleys in a precision machine, or a resin-coated stranded wire used in fishing lines, necklaces, etc. In particular, the present invention relates to an improvement in a resin-coated structure that can stabilize the twisted structure by avoiding direct contact between the wires forming the twisted wire.

[Conventional technology]

For example, the resin-coated stranded wire used for fishing lines etc. is shown in Fig. 5.
The structure shown in FIG. 6 is common.

This resin-coated twisted wire g21 is a wire 2 made of ultra-fine metal wire.
It has a structure in which a plurality of wires (for example, seven wires) are twisted together and the outer periphery is covered with a resin layer 23 by immersing the twisted wires in a resin bath or the like.

[Problem that the invention seeks to solve]

However, when the resin-coated stranded wire having the conventional structure is used as a fishing line, there is a problem that the curling property or kink property against the impact force during fishing is poor. This curling is when the fishing line is pulled under a large load and becomes taut, and then this load is removed.
This refers to deformation in a wavy (curled) manner in the length direction. When this curl occurs, the yarn stretches and its tensile strength decreases. A kink is a condition in which a wavy curled part is bent at an acute angle, and if a kink occurs, there is a risk of the wire breaking, which can be fatal to the fishing line. Also, due to the habit of tying the hook to the fishing line,
Another problem is that the hook tends to be curved away from the direction of the fishing line.

Furthermore, when using the above conventional resin-coated stranded wire as a control cable, if the pulley diameter is too small, the cable will have a curved habit that follows the shape of the pulley, resulting in a problem of reduced driving accuracy. In order to avoid this problem, it is effective to reduce the diameter of the resin-coated stranded wire, but if the diameter is made too small, durability decreases.

The above-mentioned problems arise because the resin layer 23 is difficult to penetrate into the inside of the stranded wire made by twisting the strands 22 together, so when the strands 22 are pulled under the above-mentioned large load, they rub against each other. It is thought that this is because the twisted structure tends to stretch while being twisted, which makes the twisted structure unstable. Due to the instability of this twisted structure, curls and kinks are likely to occur, and kinks are also likely to occur when tying needles or when used on small diameter pulleys, and durability is reduced due to the rubbing of the strands against each other. It is considered to be low.

The present invention has been made to solve the above-mentioned conventional problems, and can stabilize the twisted structure by preventing the strands from rubbing against each other. The purpose is to provide resin-coated stranded wire with high

[Means for solving problems]

The invention of item 1 of the present application is a resin-coated stranded wire in which a single strand made of ultra-fine metal wire or a plurality of stranded strands made by twisting a plurality of ultra-fine metal wires are twisted together without contacting each other. It is characterized by being embedded in a resin matrix.

In addition, the invention of item 2 provides that the above-mentioned ultrafine metal wire has a wire diameter of 20 μm.
-The following is characterized in that it is made of a low carbon two-phase Mi woven wire with a tensile strength of 300 'ur/w" or more, and the invention of item 3 is characterized in that a Ni plating coating layer is formed on the surface of the ultrafine metal wire, Further, the coating layer is characterized in that it has processing strain due to plastic working.

Here, in the present invention, as a method for embedding wires in a resin matrix in a twisted state without directly contacting each other, for example, first, the outer surface of each individual wire or twisted wire is coated with a conventional method. Forming a resin film, twisting the resin-coated strands together using a conventional method, covering the twisted wires with a resin coating layer, and melting and integrating each of the resin coatings and the resin coating layer by heating or the like. method can be adopted.

Note that the above-mentioned resin is, for example, polyamide.

Thermoplastic resins such as polyester, polyurethane, etc. can be used.

The low-carbon dual-phase steel in the invention of item 2 above was previously proposed by the applicant, and it has a weight percentage of C: [
1,0] ~0.50%, Si: 3.0% or less, Mn
: 5.0% or less, balance Fe and unavoidable impurities vAAs A wire rod with a fin of 20 to 6.0 is subjected to primary heat treatment, secondary cold wire drawing, secondary heat treatment, and secondary cold wire drawing to a wire diameter of 120.
It is manufactured by strong processing to #m or less. Incidentally, such a manufacturing method is described in Japanese Patent Application Laid-Open No. 62-20824. Low carbon two-phase Mi produced by the above method
The ultra-fine wire made of woven rope has a fibrous fine metal structure in which processed cells are arranged in a unidirectional fiber-like manner by the above-mentioned strong processing, and the size of the processed cells and the fiber spacing are 5 to 100.
50 to 1000 people, and has a tensile strength of 300
~600 kg/ws”.

Furthermore, in the third aspect of the invention, the Ni plating coating layer is formed on the surface of the ultrafine metal wire in order to suppress the activity of the wire and to improve self-lubricity and corrosion resistance.

When a steel wire is ultra-fine to 120 μM or less, the ratio of surface area to volume becomes extremely thick (as a result, the surface activity of the ultra-fine wire becomes abnormally high, and as a result, due to friction with the die during ultra-thinness) There is a risk of wire breakage.On the other hand, since Ni is a metal with extremely low activity, by coating the surface of the wire with it, the activity of the ultrafine wire itself can be suppressed.In addition, coating with Ni According to
Self-lubricating properties can be obtained that improve formability during processing such as bending of ultra-fine wires. Furthermore, corrosion resistance can be imparted to prevent the occurrence of rust.

Note that, as the Ni coating method, commonly used means such as wet plating methods such as electroplating and hot-dip plating, and dry plating methods such as PCD, CVD, and sputtering can be employed. Of course, the Ni plating mentioned here includes not only pure Ni but also Cu within the range that does not impede the above-mentioned necessary properties.
, Zn, A1, etc., or those alloyed with other metals are also included.

Regarding the coating amount of Ni on the above-mentioned ultra-fine metal wire, if it is less than 1 g per ultra-fine wire, it is difficult to exhibit coating effects such as rust prevention, and even if it exceeds 100 g, no improvement in the coating effect can be expected; This is not preferable because the film is too thick and causes secondary disadvantages such as beading during processing.

Therefore, a range of 1 to 100 g per pupil of the ultrafine line is appropriate.

Furthermore, in the third aspect of the invention, the Ni plating coating layer is subjected to processing strain by plastic working in order to avoid the adverse effects of hydrogen, etc. generated during the plating process.

The Ni plating coating layer that has just been plated is porous with countless pinholes, so hydrogen generated during the plating process is occluded in the Ni coating layer, or air remains in the porous layer. As a result, this hydrogen and air have a negative impact on quality. On the other hand, Ni
When processing strain is applied to the plating coating layer, the pinholes in the coating layer are crushed and disappear, and the hydrogen that has been occluded is released by the processing heat during the application of processing strain, for example by wire drawing, and most of the hydrogen etc. A plating coating layer containing no N is obtained, and as a result, the adverse effects of hydrogen and the like can be avoided.

Note that the processing strain of the Ni plating coating layer can be reduced by, for example, in the process of manufacturing ultra-fine metal wires, the wire rod is subjected to N] plating treatment in advance before being cold drawn, and then subjected to wire drawing processing, that is, plastic processing. It can be given by

[Effect]

According to the resin-coated stranded wire according to the present invention, the wires are buried in the resin matrix in a twisted state without contacting each other, so that the resin sufficiently penetrates into the portions between the wires. The adhesion between the wire and the resin is increased, and the strands do not rub against each other, so it is possible to avoid misalignment between the strands and instability of the twisted structure that is thought to be caused by rubbing against each other. As a result, curls, kinks, and curls can be avoided, and durability is improved. Furthermore, if an insulating resin is used as the matrix resin, it will also function as a coaxial cable.

According to the second aspect of the invention, the ultrafine metal wire has a tensile strength of 300 to 6, as explained in the reinforcement mechanism above.
Since we have adopted a low carbon duplex steel wire with an ultra-high strength of 00 kir/02, the tensile strength of the resin-coated stranded wire itself can be improved, and the wire diameter of the resin-coated stranded wire itself can be made extremely small. For example, when used as a fishing line, flexibility similar to that of conventional nylon (registered trademark) fishing line can be obtained, and when used as a control cable, high driving accuracy can be obtained while making the diameter of the bobbin smaller.

Furthermore, according to the third aspect of the invention, since a Ni plating coating layer is formed on the metal ultrafine wire, the activity during ultrafine formation can be suppressed, self-lubricating properties during forming processing can be obtained, and the ultrafine metal wire can be made ultrafine. Corrosion resistance commensurate with this can be obtained and rust can be prevented. Further, since processing strain is applied to the Ni plating coating layer, the adverse effects of hydrogen 1 and residual air can be avoided.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are diagrams for explaining a resin-coated stranded wire according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes a resin-coated stranded wire, which is formed by embedding seven individual wires 2 in a resin layer 3 in a twisted state without contacting each other. The strand 2 is an ultra-fine metal wire made of low-carbon dual-phase steel with a wire diameter of 120μ or less, and the low-carbon dual-phase steel has the above-mentioned composition and is manufactured by the above-mentioned manufacturing method. It is something.

The manufacturing method of the resin-coated stranded wire of this example will be explained.

First, each individual wire 2 made of the above-mentioned low carbon dual-phase steel wire is immersed in a resin bath to form a resin coating 4 on the outer surface of the wire 2, and seven resin-coated wires are twisted. (See Figure 2 faj). By immersing this stranded wire in a resin bath, the outer surface of the stranded wire is coated with a resin layer 5 (
(See 2nd illustration price).

And the twisted &! coated with this resin layer 5! By heating 1', the resin layer 5 and the resin film 4 are melted and integrated. As a result, the resin-coated twist vA shown in FIG.
l is formed.

In this way, according to the resin-coated stranded wire 1 of this embodiment, the individual wires 2 are buried in the matrix resin 3 in a twisted state without contacting each other, so that the distance between each of the wires 2 is The above-mentioned resin sufficiently penetrates into the parts, and the adhesion between each element &12 and the resin is high, so that there is no misalignment of each element wire 2, and each element wire 2 does not rub against each other directly. . Therefore, the instability of the twisted structure caused by misalignment between the strands and rubbing against each other can be avoided. As a result, the occurrence of curl kinks and curls can be avoided, and durability is improved.

In addition, in this example, each strand 2 has a tensile strength of 300 to 600.
Since we have adopted a low-carbon dual-phase wire with an ultra-high strength of 2 kg/02, the tensile strength of the resin-coated stranded wire can be improved and the wire diameter can be made extremely small. Therefore, when used as fishing line, for example, conventional nylon (registered trademark)
It provides flexibility similar to that of fishing line, and when used for control cables, it allows the pulley to be made smaller in diameter while providing high drive accuracy.

FIG. 3 shows a modification of the above embodiment.

The resin-coated stranded wire 11 of this embodiment is made by twisting seven individual wires 12, each having a Ni plating layer 14 formed on the surface thereof, without contacting each other, into a resin matrix 13.
It is constructed by being buried inside. Although not shown, the Ni plating coating layer 14 is subjected to processing strain due to plastic working.

The wire 12 has a wire diameter of 3.0 to 6.0 and has the composition described above.
A Ni plating coating layer of approximately 4 μm is formed by plating the On wire, and this is then subjected to a second heat treatment.

- It is manufactured by secondary cold wire drawing, secondary heat treatment, and secondary cold wire drawing, and the Ni plating coating layer is stretched to a thickness of about 1 μm.

According to this embodiment, since the N1 plating coating layer 14 is formed on each of the individual strands 12, it is possible to suppress the activity during ultra-fine formation, provide self-lubricating properties during forming process, and achieve ultra-fine formation. Corrosion resistance commensurate with this can be obtained and rust can be prevented. Furthermore, since processing strain is applied to the N1 plating coating layer 14, the adverse effects of residual hydrogen air can be avoided.

In each of the above embodiments, the individual strands 2.12 were twisted together, but as shown in FIG. It is also possible to employ twisted wires 16 formed by twisting together.

This resin-coated stranded wire 15 is produced by first covering the stranded wire 16 with a resin film, and then forming the resin-coated stranded wire! 16 is twisted together, this is further covered with a resin layer, and then this is heated to melt and integrate the resin layer and the resin film. As a result, the twisted wires 16 are twisted together without contacting each other, and the resin matrix 1
Resin coated strands 15 embedded within 7 are formed.

〔Effect of the invention〕

As described above, according to the resin-coated stranded wire according to the present invention, since a plurality of wires are embedded in a resin matrix in a state where they are twisted together so as not to touch each other, there is no displacement or rubbing between the wires, The stability of the twisted structure can be improved, and as a result, the occurrence of curls, kinks, and curls can be avoided, and durability can be improved.

Further, according to the invention of item 2, the tensile strength of the wire is 300 to 6.
Since we have adopted a low-carbon dual-phase steel wire that has an ultra-high strength of 0.00 kg/n'', the tensile strength of the resin-coated stranded wire itself can be improved, and the wire diameter of the resin-coated stranded wire itself can be made extremely small. According to the invention of item 3, since the N1 plated RG layer with processing strain is formed on the surface of the wire, it has the effect of suppressing the activity, self-lubricating property, and corrosion resistance. This has the effect of improving performance, and also has the effect of avoiding the negative effects of hydrogen and residual air.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a resin-coated stranded wire according to an embodiment of the present invention, Fig. 2 (fat, mountain) is a sectional view for explaining the manufacturing process, and Fig. 3 shows a modification of the above embodiment. 4 is a sectional view showing another modification, and FIGS. 5 and 6 are a sectional view and a side view, respectively, of a conventional resin-coated stranded wire. In the figure, 1, 11.15 are resin-coated stranded wires, 2.1
2 is a single strand, 3, 13.17 is a resin matrix, 14
1 is a N1 plating coating layer, and 16 is a twisted wire.

Claims (3)

[Claims] (1) A single strand made of an ultra-fine metal wire or a twisted strand made by twisting a plurality of ultra-fine metal wires is embedded in a resin matrix in a state in which a plurality of strands are twisted together without touching each other. Resin coated stranded wire. (2) The resin-coated stranded wire according to claim 1, wherein the ultrafine metal wire is made of low carbon dual-phase steel having a wire diameter of 120 μm or less and a tensile strength of 300 kg/mm^2 or more. (3) A Ni plating coating layer is formed on the surface of the ultra-fine metal wire, and the coating layer has processing strain due to plastic working, as set forth in claim 1 or 2. Resin-coated stranded wire.