JPH0475733A - Twisting method for high-strength ultrafine wire - Google Patents

Abstract

PURPOSE:To avert the deterioration of the shape and accuracy of a twisted wire with lapse of time by disposing respective bobbins around which ultrafine wires are wound on the outer peripheral part of a disk and rotating the disk to bundle the respective ultrafine wires while revolving the respective bobbins. CONSTITUTION:A core wire 2a consisting of the high-strength ultrafine wires is wound around the bobbin 18. The core wire 2a consists of a two-phase structure steel wire having <=120mum wire diameter and >=300kgf/mm<2> tensile strength. A take-up bobbin 17 is rotated and the disk 11 is rotated by a driving motor 14. The respective outer wires 2b are then spirally wound around the central core wire 2a while revolving and the twisted wire 2 is thereby formed. This wire is taken up on the take-up bobbin 17. The twisted wire 2 is thereafter immersed into, for example, a resin bath and is coated with the resin, by which the minirope is produced.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a processing method for manufacturing a wire by twisting together a plurality of high-strength ultrafine cottons with a wire diameter of 120 μm or less, and in particular, A twisting method that reduces the twisting and wrinkling that occur in ultra-fine wires when processing one point of the wire, thereby avoiding deterioration of the shape's dimensional accuracy over time, as well as preventing negative effects on strength and toughness. [Prior Art] For example, in measuring instruments, copying machines, printing printers, etc., when transmitting motion to a movable member U7 and controlling the position of the movable member, a forged lobe is employed. This mini-lobe is used, for example, to transmit the motion from the actuator to the print head when the print head is moved by a predetermined value Wt=-) to print in a printing printer. As an example of L7, there is a structure shown in FIG.

This mini-lobe 1 has a core wire 2a made of ultra-fine metal cotton arranged in a straight line, and outer wires 2b made of six ultra-fine wires twisted together in a spiral around the core wire 2a. The minilobe l of τ is required to have high strength and toughness, and
In order to improve control accuracy, the spring constant is increased to reduce the axial elongation as much as possible. A stainless steel wire, etc. is used.

When manufacturing the stranded wire 2 constituting such a minilobe 1, a processing device as shown in FIG. 7 has conventionally been used. A shaft 4a is connected to one end of a rotatably supported drum 3, and a pulley 4b,
A drive motor 5 is connected through the drum 4c, and a pois 82 and a winding bobbin 9 are disposed outside the other end of the drum 3.

Further, six outer wire bobbins 6 are arranged at predetermined intervals in the axial center of the drum 3, and a core wire bobbin 7 is arranged outside the drum 3 in the axial direction. A core wire 2a is wound around the core wire bobbin 7, and the core wire 2a is inserted into the voice 8 using the axis of the drum 3. Further, each outer wire pobbin 6 is wound with an outer wire 2b which is twisted around the core wire 2a, and each outer wire 2b is pulled out to the outer peripheral surface of the drum 3 and then bundled. It is inserted into the voice 8 mentioned above.

In order to manufacture the stranded wire 2 using the above device, the core wire 2a and the outer wire 2b are focused on the voice 8 while rotating the drum 3 at high speed, where they are twisted together to form the stranded wire 2, which is then wound. Wind with bobbin 9. That is, in the conventional method described above, the core wire 2a only rotates on its own axis, whereas the outer wire 2b rotates around its axis because the portion between the bobbin 6 and the voice 8 is swung around like a food jumper. The wire is twisted using this principle of skipping rope.

Here, as various devices have become smaller, lighter, and faster in recent years, there has been a demand for mini ropes 1 that have a smaller wire diameter while ensuring predetermined strength and toughness. In order to meet such demands, the applicant of the present invention has previously proposed a low carbon two-phase structure m-line.

This low carbon dual phase steel wire has C: 0.01 to 0.01 in weight%.
0.50%, Si: 3.0% or less, Mn: 5.0% or less, balance Fe and inevitable impurities, wire diameter 3.0-6
．． This wire is manufactured by subjecting a 0fi wire rod to primary heat treatment, secondary cold wire drawing, secondary heat treatment, and secondary cold wire drawing to reduce the wire diameter to 120 μm or less. Incidentally, such a manufacturing method is described in JP-A-62-20824.

The ultrafine metal wire made of the low carbon dual-phase steel wire produced by the above method has a fibrous fine metal structure in which cells processed by the above strong processing are arranged in a fibrous shape in one direction, and Cell size 1 fiber spacing 5-100 people, 5
0-1000 people, and the tensile strength is 300-60
0 kgf/m" or more. Such a low carbon dual-phase steel wire has a wire diameter of 120μ or less and a tensile strength of 300 kg.
[Problem to be solved by the invention] By the way, the wire diameter is 120μ or less and the tensile strength is 300K.
It has been found that when a stranded wire is manufactured by the above-mentioned conventional stranded wire processing method using a high-strength ultrafine wire of f/m'' or more, the stranded wire is significantly twisted.

Such stranded wires with significant twist will adversely affect, for example, the mini-rotation surface.

The purpose of the present invention is to have a wire diameter of 120μ or less and a tensile strength of 300μ.
An object of the present invention is to provide a method for stranding high-strength ultra-fine wires that can reduce twisting when stranding high-strength ultra-fine wires of kgf/m'' or more and avoid adverse effects on characteristic 3 performance.

Means for Solving Problem C] The inventor of the present invention investigated the cause of twisting when the high-strength ultrafine wire of 120 μm or less is twisted. Conventional processing equipment has a structure in which each bobbin is disposed at the axis of the drum so that the drum can rotate at high speed for the purpose of improving productivity η1. Since the bobbin is arranged on the axis in this way, each ultrafine wire is drawn out to the outer peripheral surface of the drum, and then extended to the voice, where it is focused. Therefore, each ultra-thin wire is swung around like a skipping rope and revolves around its own axis, and as a result, the outer wire is likely to accumulate a large amount of twist. In this case, if the strength of the strands is low and the wire diameter is relatively thick, as in conventional stranded wires, even if the strands themselves are twisted, each strand will undergo plastic deformation when twisted. As a result, the above-mentioned twist was reduced by 9, and as a result, the stranded wire did not cause much sagging. 4) J: This can be considered. However, the present invention targets wires with a diameter of 120μ or less and a tensile strength of 300 kgf/lyn.
When the above-mentioned high-strength ultra-fine wires are twisted together using the conventional method described in Section 2, the wire diameter is small and the tensile strength is large. It is thought that since the plastic deformation of the strands itself is small, twisting cannot be absorbed, and as a result, the twist in the stranded wire becomes large.

The inventor believes that -1. In the case of the conventional method as described above,
Assuming that the above-mentioned webbing occurs in the amount t7 because the strand revolves while rotating, and suppressing the above-mentioned rotation, we get
The present invention was created based on the idea that the above problems could be solved.

Therefore, the present invention has a wire diameter of 120μ4 or less and a tensile strength of 300μ4 or less.
In a method of twisting together a plurality of high-strength ultra-fine wires of kgf/+u+" or more and processing them into a twisted wire, a plurality of bobbins each having each of the above-mentioned ultra-fine wires wound thereon are arranged around the outer periphery of a circular member, and the disk is rotated. By doing this, each bobbin is revolved and the ultra-fine wires from each bobbin are focused and twisted into wires.

[Function] High-strength ultra-fine wire strand processing method twister according to the present invention,
Since the ultra-fine wires from each bobbin placed on the outer circumference of the disk are converged, the ultra-fine wires will no longer be swung around like in conventional jump ropes, and therefore each The amount of rotation of the ultra-fine wires can be suppressed, and the stack of twists of each ultra-fine wire itself can be reduced by two degrees. As a result, it is possible to reduce twisting when twisting and greening high-strength ultrafine wires with a wire diameter of 120/zx or less, a tensile strength of 300 bf, and /M2 or more, and for example, minilobes can be avoided.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are diagrams for explaining a method for processing high-strength ultra-fine wires according to an uninvented embodiment C5. This embodiment will be explained by taking as an example a case where stranded wires constituting a minilobe are manufactured.

In the figure, 10 is a processing device that implements the one-hot wire processing method of the present embodiment. A shaft 12 is connected to the axial center of the disc 11 of this processing device 10, and a drive motor 14 is connected to the shaft 12 via pulleys 13a and 13b.
is connected. Further, a voice 16 is disposed on one side of the disc 11 with a guide member 15 interposed therebetween (7), and a winding bobbin 17 is disposed above the voice 16.

Further, a core wire bobbin 18 is disposed below the disk 11, and a core wire 2a made of a high-strength ultra-fine wire is wound around the bobbin 18. , - core wire 2a has a wire diameter of 120μ or less and a tensile strength of 300 to 600 bf/mx
The core wire 2a is made of a low-carbon dual-phase steel wire having a composition as described above. The voice 16 km is inserted through the center.

Six outer cotton bobbins 20 are arranged at predetermined angular intervals on the circumference of the upper surface of the disk 11. Each bobbin 20 is rotatably supported by a support member 21, and the support member 21 is fixed to the disk 11. Further, - each bobbin 20 is wound with an outer cotton 2b made of a high-strength ultra-fine wire, and each of the afterta wires 2b is made of the same low carbon dual-phase steel wire as described above; Each outer wire 2b is inserted through the voice 16, so that the core cotton 2a and the outer wire 21 are bundled in the voice 16 and twisted together within the voice 16.

Next! Next, we will explain the stranded wire processing method of this embodiment using the second adding T device 11N. It is fixed to the winding bobbin 17.

In this state, the winding bobbin 17 is rotated, and the disk 11 is also rotated by the drive motor 14. Then, each outer cotton 2b is wound around the central core li 2a in a spiral shape while revolving, thereby forming a twisted cotton 2, which is wound around the winding bobbin 17. j, After 2, this twisted cotton 2
Minilobes are produced by infiltrating (2) and coating with resin, for example in a resin bath.

As described above, according to this embodiment, each outer wire bobbin 20 is attached to the outer peripheral edge of the disk 11 that is rotationally driven by the drive motor 14.
The core wire 2a and the outer wire 2b were twisted together while rotating the disc 11 to produce the twisted wire m2, so the outer wire was The outer wire bobbin 20 is not swung around, and the distance between each outer wire bobbin 20 and the voice 16 can be equalized and shortened, and the amount of rotation of the outer wire 2b can be suppressed accordingly. As a result, it is possible to reduce twisting when twisting the core wire 2a, outer wire 12b, which are made of high-strength ultra-fine wires with a wire diameter of 120 μm or less and a tensile strength of 300 ktzf/1m or more, and to form a mini rope. , it is possible to avoid deterioration of accuracy over time, and also to avoid adverse effects on characteristics such as strength and toughness.Furthermore, it is possible to achieve a smaller diameter while ensuring the strength and flJ properties required for mini ropes, and to miniaturize the various devices mentioned above. , which can handle higher speeds.

In addition, in the above embodiment, the case where the stranded wire is used as a mini rope was explained as an example, but the use of the stranded wire of the present invention is of course not limited to this, and it can also be applied to cases where it is employed for various reinforcement purposes. can.

Here, an experiment conducted to confirm the twist reduction effect of the stranded wire manufactured by the processing method of this example will be described.

In this experiment, the wire diameter was 16 to 30 μm, and the tensile strength was 520 to 4.
A stranded wire with a length of 1 m and a cross-sectional shape shown in FIG. 6 was created by using a low carbon dual-phase steel wire of 30 kgf/m" by the above-mentioned method. Then, as shown in FIG. Then, when the two ends of the stranded wire were brought close together, the number of twists that naturally occurred was counted, and this was taken as the number of twists (for example, in Figure 5 (al is 0, Figure 5 ('b) is 4). times)
.

For comparison, 5US304. A stranded wire was made using a tI4 wire with a low carbon two-phase structure using a conventional processing method using a drum, and the number of twists of the stranded wire was counted.

Figures 3 and 4 and the table show the results in Hz; in this table,
Floors 1 to 11 show stranded wires made by conventional processing methods, among which floors 1 to 5 are low carbon two-phase structure 1gI wire, floors 6 to 1
1 is 5US304. Dimensions 12 to 14 indicate the stranded wires produced by the processing method of this example, and the strand pinch R is the value obtained by dividing the length of one round of the ultra-fine wire by the outer diameter of the stranded wire.

As is clear from each figure and table, the wire diameter is 30 to 150.
μ seaweed, tensile strength 270-200 f/m”5
In the case of US304 wire (numbers 6 to 11), the number of twists is small, 6 to 0, and is not a big problem. On the other hand, the wire diameter is 16-30 μm and the tensile strength is 520-430 kr.
f/+n" low carbon duplex steel wire is processed using the conventional method (-1 to 5), the number of torsions increases to 15 to 10. This experiment also shows that as the wire diameter becomes thinner, the tensile strength increases. It can be seen that the larger the number of twists, the greater the number of twists (
Also, regarding the relationship between the pitch R and the number of twists, it can be seen that the smaller the pitch, the greater the number of twists, and the larger the pitch, the fewer the number of twists (see FIG. 4).

On the other hand, in the case of the twisted wires (m12 to 14) created by the processing method of this example, the number of twists was significantly reduced to 6 to 2, and the amount of rotation during twisting was significantly reduced. The effect of suppressing this is recognized.

〔Effect of the invention〕

As described above, according to the high-strength ultra-fine wire stranding method according to the present invention, each bobbin wound with ultra-fine wire is arranged around the outer periphery of a disk, and the disk is rotated to form each bobbin. Since each ultra-fine wire is converged while rotating, it is possible to reduce torsion by the amount of rotation of each ultra-fine wire, and avoid deterioration of the shape and precision of the stranded wire over time, as well as improve strength, toughness, etc. This has the effect of avoiding adverse effects on the characteristics of

1st

[Brief explanation of the drawing]

FIGS. 1 and 2 are diagrams for explaining a method for processing high-strength ultra-fine wires according to an embodiment of the present invention. FIG. 1 is a schematic configuration diagram thereof, and FIG. The plan view, FIG. 3, and FIG. 4 are characteristic diagrams showing the results of experiments conducted to confirm the effects of this example, and FIG. 5+a+ and FIG. 2 and 6 (al and 6) are a cross-sectional side view showing the structure of a typical stranded wire, and FIG. 7 is a schematic configuration diagram showing a conventional processing method. Twisted wires, 2a and 2b are high-strength ultra-fine wires,
11 is a disc, and 20 is a bobbin.

Claims (1)

[Claims] (1) Wire diameter 120μm or less, strength 300kgf/mm^
In a method of stranding two or more high-strength ultra-fine wires by twisting them together, a plurality of bobbins each having each of the above-mentioned ultra-fine wires wound thereon are arranged around the outer circumference of a circular member, and each of the above-mentioned ultra-fine wires is twisted by rotating the disc. A high-strength ultra-fine wire stranding method characterized by converging the ultra-fine wires from each bobbin into strands while rotating the bobbin.