JPS5936716B2 - Stranded wire manufacturing method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for producing bare stranded wire, particularly stranded mild steel wire.

There are three types of stranded wire: concentric stranded wire, clustered stranded wire, and composite stranded wire, and all are manufactured in the order of wire drawing, annealing, and stranding.

Wire drawing is the process of stretching a large diameter rough drawn wire to make a small diameter wire, and stranding is a process in which multiple wires are twisted.For example, in the simplest concentric twisted wire, six wires are twisted around one center line. This is a process of twisting the wire through a die, and the annealing process and the twisting process may be performed in reverse order. Therefore, the conventional stranded wire production is as follows (to) ~ (
It is separated into three processes.

(To) Wire drawing process rough drawing → Wire drawing machine → Winding machine (drum winding) (To) Annealing process supply stand → Annealing machine or annealing furnace → Winding machine (drum winding) ((-) Wire twisting process supply stand → Twisting machine → Winding machine (drum winding) In this way, in the conventional method, the three processes are separated, so the manufacturing equipment becomes large and requires a large amount of installation space, and a) ~
There was a drawback that the (drum winding) part was redundant in each process, resulting in wasted power.

This invention was made in view of the above points, and includes wire drawing,
The object of the present invention is to provide a method and device for producing twisted wire in which the steps of annealing and twisting are made continuous, thereby reducing the overall size of the device, installation space, and power consumption.

Another object of the present invention is to provide a method for integrally drawing and annealing a plurality of strands by extrusion molding.

Another object of the present invention is to provide a method for continuously twisting a plurality of extruded wires.

Another purpose is to provide a wide variety of stranded wires by combining a plurality of stranding devices. There have been many continuous extrusion molding methods for wire rods, and a typical example is the ConfOrming method. ConfOrm
ing method is described in Japanese Patent Publication No. 51-38316 (USP-3,7
65, 216), ``raw material is continuously fed into a passage formed between a rotating wheel and a stationary housing, and raw material is continuously fed from an extrusion orifice attached to the stationary housing. ``method of extruding wire'',
Since the extruded wires are not twisted, the object of the present invention cannot be achieved.

That is, the method for manufacturing stranded wire according to the present invention is characterized in that a plurality of strands are fed out by extrusion molding using an annularly arranged die that rotates together with a rotating body, and the fed strands are twisted together. shall be.

Furthermore, when twisting a plurality of strands together, by passing another strand or another strand from the axis of the rotating body and twisting around this other strand or another strand, the collective strand , concentric strands can be produced.

Further, the stranded wire manufacturing apparatus according to the present invention includes an annular groove provided on the outer circumference or inner circumference of the rotating body, a pocket continuously provided on the groove bottom or side wall of the annular groove, and a pocket that engages with the annular groove. A continuous extrusion mechanism is provided with a fixed shutter member whose cross-sectional area is reduced at a constant rate, and a plurality of dies are arranged annularly on the groove bottom or side wall of the annular groove, and the rotating body The invention is characterized in that a plurality of wires sent out from the die are twisted together by the rotation of the die.

Furthermore, in order to be able to produce either clustered strands or concentric strands, the rotating body can be provided with an axial hole so that further strands can be supplied.

By combining the manufacturing apparatus according to the present invention as a unit, composite twisted wires can also be easily manufactured. This invention will be explained below based on the drawings.

FIG. 1 shows an overall view of the stranded wire manufacturing apparatus.

In the figure, 1 is a carrier wound with a small-diameter wire 2;
shows a carrier wrapped around a large diameter rough wire 4. Bare wire 2.
is supplied to a wire straightening device 6 including a plurality of straightening rolls 5. The rough drawn wire 4 is supplied to an extrusion molding machine 7, and as will be described in detail later, the plurality of strands 8 that come out of the extrusion are twisted in a twisting holder 9 with the strands 2 as a center line,
A concentric strand 10 is formed. After passing through a counter 11, this concentric stranded wire 10 is wound onto a winding drum 13 via a take-up recapstan 12. According to this invention, the plurality of strands 8 required for strand formation are manufactured all at once by the extrusion molding machine 7, and annealing is also performed at the same time, so that the conventional wire drawing and annealing processes can be integrated and continuous. is achieved.

2 and 3 show partially detailed views of the extrusion molding machine 7 and the twisting spout holder 9, respectively.

In the figure, reference numeral 14 denotes a driven wheel, and an annular groove 15 having a pocket 16 at the bottom of the groove is formed in the outer periphery of the driven wheel. The fixed housing member 17 has a supply path 18 for supplying material (rough wire).
At the same time, the inner circumferential surface 19 has a larger protrusion amount into the groove 15 in the direction of rotation of the driven wheel 14 (arrow 20), and the section of the passage 21 formed by the groove 15 and the inner circumferential surface 19 is increased. The area is made to decrease sequentially. A guide roll 22 is arranged on the upper part of the fixed housing member 17 facing the supply path 18. Further, a plurality of dies 26 are arranged in a circular manner around the shaft hole 23 of the driven wheel 14 .

That is, a screw hole 25 communicating with the pocket 16 is provided in the front end 24 of the driven wheel 14 in parallel with the shaft hole 23.
A die holder 27 having a passage 28 is screwed into the screw hole 25 . A die 26 is supported at the tip of the die holder facing the pocket 16. Furthermore, the extrusion molding machine 7 is equipped with a plurality of tension adjustment rolls 29 and a twisting plate 30 in front of the driven wheel 14, and the twisting holder 9 is equipped with a twisting die 31. The part from the twister 7 to the twisting opening holder 9 is connected to each strand 8 by means not shown.
A cooling treatment is applied to prevent the formation of scale (copper oxide).

During operation of the apparatus shown in FIGS. 2 and 3, the material (rough line 4) is moved along the guide roll 22 to the stationary shoe member 17.
is supplied into the passage 21 from the supply passage 18 .

As the driven wheel 14 rotates, the rough lead line 4 enters the passage 21 to fill the inside thereof due to its frictional force. Since the cross-sectional area of the passage 21 is reduced by the inner circumferential surface 19 of the fixed shoe member 17, the passage 21 enters under compression, and when a predetermined compressive stress is reached, the plurality of dies 2 facing each pocket 16
6, a wire 8 having a desired wire diameter is continuously extruded and comes out. That is, in this extrusion molding, the original large-diameter rough drawn wire 4 is subjected to high compression pressure and generated high heat, and is molded into a wire 8 having a smaller diameter than the die 26.
The conventional wire drawing and annealing steps are integrated and are performed simultaneously. After these strands 8 are kept at a constant tension by a tension adjustment roll 29 that rotates simultaneously with the driven wheels 14, they are attached to a twisting plate along with centerline wires 2) separately supplied through a shaft hole 23. 30 and enters the twisting mouth holder 9. Here, the concentric twisted wires 10 are twisted together in the twisting die 31.
is collected, passed through a counter 11 and a take-up capstan 12 shown in FIG. 1, and then wound onto a winding drum 13 as a product. Figures 4 and 5 show the fixed shoe member IT in Figures 2 and 3.
This shows member IV whose shape has been partially changed.

In this case, since the shoe is made longer, there is an effect that backflow from the pocket side to the supply path 18 is reduced. FIG. 6 shows a pocket 16' provided in the front side wall of the annular groove 15. In this case, since the diameter of the driven wheel 14 is reduced,
This has the effect of reducing the required power. Figure T shows the driven wheel 1.
4' is formed as a donut-shaped cylinder, and an annular groove 15' is formed in the inner circumferential surface of the cylinder.

In this case, the driven wheel 14' can be made thin. FIG. 8 shows an annular groove 15' formed in the front end 24 of the driven wheel 14 in the same direction as the shaft hole 23, and FIG. 15'' is provided at an angle, and its outlet intersects the axis of the driven wheel 14 at one point.

In all of these cases, the cooling control of the front end portion 24 of the driven wheel 14 is facilitated by opening the drive direction of the driven wheel 14, so that opening of the annular grooves 15'', 15'' can be suppressed. FIG. 10 is an explanatory diagram of the necessity of pockets 16 in the annular groove 15 when strands for stranding are obtained by continuous extrusion using a plurality of dies 26.

That is, it can be seen that in the figure, the only extrudable area is the shaded area 34, and the other areas are non-extrudable areas. Furthermore, it can be seen that the impossible region occurs regardless of the number of rough lines 4 (three in the figure) supplied to the driven wheels 14. 11th
The figure is a schematic diagram of a multilayer concentric stranded wire manufacturing apparatus.

35, 36 and 3T are extrusion molding units, which respectively correspond to the extrusion molding machine 7 and the twisting mouth holder 9 in FIGS. 1 to 3.
It is equipped with.

In this device, the strands 2 supplied from the carrier 1 are sequentially twisted in the same manner as described above in the basic unit 35, the intermediate unit 36 and the outer layer unit 3T to form a multilayer concentric stranded wire 10', and a take-up cap. 12 onto a winding drum 13. in this way,
By combining multiple units in series, a multilayer concentric strand having the desired layers is formed. The intermediate and outer layer units 36 and 37 are a combination of two and three basic units 35, respectively. FIG. 12 is a schematic diagram of a hard drawn SB stranded wire manufacturing apparatus.

The concentric stranded wire 10 obtained by the basic unit 35 is transferred to a continuous wire drawing machine 38 having a plurality of wire drawing rolls 39 or dies.
The wire is drawn down to a small diameter, adjusted to the required twist pitch using a known buncher-type wire twisting machine 40, and then adjusted to a predetermined wire diameter using a finishing die (not shown). 1st
FIG. 3 is a schematic diagram of a composite stranded wire manufacturing apparatus.

In the figure, reference numeral 41 denotes a winding and rotating type twisting machine, which is equipped with a take-up capstan 12 and a winding drum 13 inside. A plurality of basic units 35 are arranged radially in front of this wire twisting machine 41. In the device shown, each concentric strand 10 taken from a plurality of basic units 35 is
A composite strand 42 is formed by the rotation of the stranding machine 41, and is wound up by the take-up capstan 12 and the winding drum 13 in the same manner as described above. FIG. 14 shows the wire twisting machine 41 of FIG. 13 with the take-up capstan 12 and winding drum 13 separated.

That is, a rotary stranding machine 4 equipped with a take-off capstan 12
3, two winders 44 are combined with a synchronous rotation mechanism. In this case, unlike the case shown in FIG. 13, continuous operation is possible by simply replacing the winder 44 without stopping the entire system. The above explanation has been about the production of concentric stranded wires, except for FIGS. 13 and 14, but the plurality of strands produced by the extrusion molding machine 7 or the basic unit 35 should all be clustered stranded wires. is easy and can be applied to the production of various compressed stranded wires.

Since this invention is as described above, conventional wire drawing,
It is possible to provide a method and apparatus for manufacturing a twisted wire in which the steps of annealing and twisting are made continuous. As a result, compared to conventional methods and devices, it is possible to significantly reduce power and labor, and together with the miniaturization of the entire device and the reduction in installation space, it is possible to achieve rationalization of production.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall view of a stranded wire manufacturing apparatus, and FIG. 2 is a partially detailed view of the extrusion molding machine shown in FIG. 1.
3 is a sectional view taken along the line -- in FIG. 2, FIGS. 4 to 9 are sectional views showing main parts of other embodiments of the extrusion molding machine, and FIG. Fig. 11 is a schematic diagram of a multilayer concentric stranded wire production device, Fig. 12 is a schematic diagram of an SB stranded wire production device using bus bar drawing, and Fig. 13 is a schematic diagram of a composite stranded wire production device. Schematic diagram, 1st
FIG. 4 is a schematic diagram of another composite stranded wire manufacturing apparatus. 14... Driven wheel, 15... Annular groove,
16...Pocket, 17...Fixing shell member, 23...Shaft hole, 26...Dice.

Claims (1)

[Claims] 1. A plurality of strands are fed out by extrusion molding using annularly arranged dies that rotate together with a rotating body, and immediately after that, a plurality of strands are fed out continuously by utilizing the rotation of the dies. A method for manufacturing stranded wire, which is characterized by twisting together strands sent out. 2. A plurality of strands are fed out by extrusion molding using an annularly arranged die that rotates together with the rotating body, and the fed strands are fed together with another strand fed through the axis of the rotating body, or A method for manufacturing a stranded wire characterized by twisting the other strands together. 3. An annular groove provided on the outer periphery or inner periphery of the rotating body, and a pocket provided continuously on the groove bottom or side wall of this annular groove,
A continuous extrusion mechanism includes a fixed shoe member that engages with the annular groove and whose cross-sectional area decreases at a constant rate, and a plurality of dies are arranged annularly on the bottom or side wall of the annular groove. A stranded wire manufacturing apparatus characterized in that a plurality of strands of wire are provided and twisted together by a plurality of strands fed out from a die by rotation of the rotary body. 4. An annular groove provided on the outer periphery or inner periphery of the rotating body, and a pocket provided continuously on the groove bottom or side wall of this annular groove,
A continuous extrusion mechanism includes a fixed shoe member that engages with the annular groove and whose cross-sectional area decreases at a constant rate, and a plurality of dies are arranged annularly on the bottom or side wall of the annular groove. further providing a shaft hole in the rotating body;
Production of a stranded wire characterized in that a plurality of strands sent out from a die by rotation of a rotating body are twisted together with another strand fed through the shaft hole or with this other strand as a center line. Device.