JPH04197541A - Device for twisting wires - Google Patents

Abstract

PURPOSE:To twist wires in one process and to shorten working time by arranging a mandrel having spiral-shaped groove, which an element wire is guided as winding state, and rolls for adjusting shape of the element wire shaped with this mandrel between the mandrel and a twist hole. CONSTITUTION:By passing the element wire 2 through the mandrel 24, the spiral-shape is remained in the element wire 2. Further, the spiral-shaped element wire can be made to the shape corresponding to an OP unit (optical fiber unit) 1 arranged at center with the rolls 48 for adjusting. Even in the case the element wire is a steel wire having difficult-to-plastic work with high rigidity, the wires can be surely twisted together on outer periphery of the OP unit. The rolls 48 for adjusting are arranged between the mandrel and the twist hole 12, and each roll can be reciprocated to the axial direction as showing in the arrow marks A, B and also to the diameter direction as showing in the arrow marks E, F, and can be held to the desired position. By this method, twisting pitch of the element wire is simply changed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a twisted wire device.

[Problems to be solved by conventional technology and invention] Conventionally,
The wire twisting equipment includes ■Post form method, ■Multi-stage roll preform method, ■Drum twist method, and ■Heat treatment (
There were various devices such as heat set method.

That is, in the method (2), by passing the stranded wires made by twisting the strands through the straightener, poor shadowing due to the rigidity of the strands and untwisting caused by the twisting of the stranded wires are prevented. Therefore,
In the case of an OPCW,' (optical fiber composite overhead ground wire) in which an OP unit (optical fiber unit) is installed in the center, there is a limit to the bending process. After twisting together as shown, connect this temporary core wire and O.
It was replaced with P unit. In other words, two steps are required, which makes the entire device complicated and requires a long working time.

With the method (2), it was impossible to shape the wire appropriately if the wire had high rigidity.

In method (2), the strands were separately subjected to a shading process, and the drum itself was rotated to twist the wires together when the wires were wound onto a tram. Therefore, this method has the disadvantage of requiring two steps: shaping and twisting.

In method (2), the shaped wires or wires after stranding are heated to remove stress, so there are problems with thermal deterioration and heat effects, and there are also disadvantages of high equipment costs. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wire twisting device which requires only one step and which does not cause the strands to lift up resulting in poor appearance or damage to the internal OP unit.

[Means for Solving the Problems] In order to achieve the above object, the wire twisting device according to the present invention twists a plurality of wires around the outer periphery of an OP unit. 8
In the vA device, a mandrel having a spiral shaped groove in which the wire is guided in a winding manner is provided between the twisting port and the delivery bobbin of the wire, and the wire is shaped by the mandrel. A plurality of adjusting rolls for adjusting the shaping shape of the strands are provided between the mandrel and the twisting opening.

[Function] As the strand passes through the mandrel, the strand is given a spiral curl, and furthermore, the strand with the spiral curl is passed through the OP unit (located at the center) by an adjustment roll. Optical fiber units) can be shaped into shapes that are compatible with optical fiber units.
It can be reliably twisted around the outer circumference of the OP unit.

〔Example〕

Hereinafter, the present invention will be explained in detail based on drawings showing examples.

The first part shows a twisted wire device according to the present invention, and this device is an OP unit in which a plurality of wires 2 are twisted around the outer circumference of an OP unit (optical fiber Unisoto) 1, as shown in FIG.
CW (optical fiber composite overhead ground wire) 3 is formed, and the OP unit 1 in this case includes a spacer 6 having a fitting groove 5 on the outer peripheral surface into which the optical fiber 4 is fitted.
and a pipe material 7 made of aluminum or the like that covers the spacer 6 and the optical fiber 4, and the strand 2 is made of steel NlA3 having a substantially fan-shaped cross section, and a coating layer 9 made of aluminum or the like that covers the steel wire 8. It consists of and. In other words, the entire cross section of the strand 2 is approximately fan-shaped.

As shown in FIG. 1, this device includes a sending device 10 for sending out the OP unit 1, a sending device 11 for sending out the strands 2, . . .
- through the twisting port 12, and the 0PG that is twisted together
It is equipped with a take-up device I3 that pulls W3 downstream, and a take-up device 14 that takes up 0PGW3. A plurality of strands 2 and 2 pass through the device 11 and enter the twisting port 12, and are also sent out from the sending device 11.
... enters the twisting port 12 while rotating along the axis of the OP unit l, and when the OP unit l and the strands 2... exit from the twisting port 12 to the downstream side, they are as shown in Fig. 8. 0 as shown in
A PGW 3 is formed and sequentially wound onto a winding bobbin 15 of a winding device 14.

The delivery device 10 has a rotatable bobbin 16, and the OP unit 1 is wound around the bobbin 16.

The delivery device 11 also includes a support stand 17 erected on the upstream side.
, a support stand 18 erected on the downstream side, and the support stand 17 .
a rotating body 19 disposed between the rotating bodies 1 and 18;
A plurality of delivery bobbins 20... are attached to 9.

That is, the rotating body 19 includes a hollow shaft 2 into which the OP unit 1 is inserted, and a disc-shaped desk 22 which is fitted onto the shaft 21.
The upstream end of the hollow shaft 2 is rotatably supported on a support base 17, the downstream end of the hollow shaft 21 is connected to a rotary plate 23, and the rotary plate 23 is connected via a bearing. It is rotatably supported on a support stand 18.

A delivery bobbin 20 is attached to the desk 22 . . . , and a plurality of wire passing holes (not shown) are provided in the desk 22 . is sent to the downstream side via.

A mandrel 24 is disposed between the twist opening 12 and the delivery bobbin 20, and a spiral groove 25 is formed in the mandrel 24 as shown in FIG. . That is, the mandrel 24 is formed by recessing the spirally shaped groove 25 in a short cylindrical body made of synthetic resin or metal that has excellent wear resistance, heat resistance, and low friction. In addition, as the synthetic resin, polyacetol (trade name: Delrin), monomer casting nylon, etc. are preferable.

Further, as shown in FIG. 2, a batten 26 is integrally connected to the hollow shaft 21, and a mandrel 24 is attached to the batten 26 via a fixture 27. Here, the fixture 27
consists of a mounting piece 28 that is attached to the batten 26 via fixing tools such as bolts and nands, and a fixture body 29 that is swingably attached to the mounting piece 28.
A mandrel 24 is held between the mandrels 9 and 9. That is, as shown in FIG. 4, the fixture main body 29 consists of a first member 30 attached to the mounting piece 28, and a second member 31 detachably attached to the first member 30. The member 30 is
A mounting piece 32 and a semicircular arc portion 33 connected to the mounting piece 32
and an outer flange portion 34 that projects outward from the semicircular arc portion 33.
34, the second member 31 includes a semicircular arc portion 35 and an outer flange portion 36, 36 protruding outward from the semicircular arc portion 35.
It consists of Then, the first member 30 and the second member 31 are overlapped, and their opposing outer flanges 34 and 36 are attached to each other with fasteners 37 (see FIG. 2) such as bolts and nands.

Therefore, a fitting hole 38 is formed by the semicircular arc portions 33, 35, and the mandrel 24 is fitted into the fitting hole 38.

In this case, as shown in FIG.
Set it so that it does not come in contact with 7. In addition, the fixture body 29
As shown in Fig. 2, the fasteners 3 such as bolts and
In this case, when the fixing tool 39 is loosened, the main body 29 swings as shown by the arrow, and when the fastening tool 39 is tightened, the main body 29 is fixed.

That is, the angle of the main body 29 with respect to the mounting piece 28 can be changed, and the angle of the mandrel 24 with respect to the batten 26 can be changed.

By changing the angle of the mandrel 24, it is possible to correspond to various angles of the cotton 2 delivered from the delivery bobbin 20.

Further, through holes 40 are provided through the batten 26, and the wire 2 passing through the through holes 40 fits into the spirally shaped groove 25 of the mandrel 24.

As shown in FIGS. 1 and 2, a plurality of adjusting rolls 48 are provided between the mandrel 24 and the twisting opening 12.
...is provided. That is, a hollow protruding shaft 49 disposed on the same axis as the hollow shaft 21 is protruded from the downstream surface of the rotary plate 23, and the roll holder 50 is attached to the protruding shaft 49.
is attached so as to be slidable in the axial direction, and a plurality of ports/nodes 51 (corresponding to the number of wires 2 to be twisted rolls 48 on the rods 51...
It is attached so that it can be rotated freely. Further, the rolls 48 are attached to the rod 51 so as to be able to reciprocate in the radial direction. Therefore, each roll 48... can reciprocate in the axial direction as shown by arrows A and B, and can also reciprocate in the radial direction as shown by arrows E and F, so that each roll 48 can be moved to a desired position.
can be held.

The holding bodies 50 are arranged at a pitch that is approximately 1/2 of the pitch P (see FIG. 9) of the elements 112 (shaped) that have passed through the rotary plate 23, and The roll 48 of the upstream holding body 50 is shown in FIG. 6 (1) and FIG.
), the wire 2 is fitted on the inside (protruding shaft 49 side), and the roll 48 of the next holding body 50 is fitted on the outside as shown in FIG. 6 (It) and FIG. 7 (II). The strand 2 is fitted on the opposite side of the protruding shaft 49.

That is, the strands 2 are placed on a plurality of rolls 48 (four rolls in the case of rolling) disposed along the longitudinal direction (axial direction), on the inner side,
The shape of the wire 2 formed by the mandrel 24 is adjusted by fitting the wires 2 alternately on the outside, inside, and outside. Further, the roll 48 is desirably made of the same material as the mandrel 24 because it is desirable to have excellent wear resistance, heat resistance, and low friction.

Note that the take-up device 13 has two or one (two in the illustration) capstans 41, 41, and
0PGW3 is wound around the capstan 41.41 a plurality of times, and the rotation of the capstan 41.41 pulls the OPC;W3 as shown by the arrow, and approximately the lower half thereof is buried in the floor surface F. Note that the pulling device 13 may be an endless track type pulling machine equipped with a pair of rotating upper and lower endless tracks.

Further, the twist opening 12 is connected to the die 4 provided on the base 42.
3, the bobbin 16 of the delivery device 10 is pivotally supported on a support base 44, and the bobbin 15 of the winding device 14 is pivotally supported on a support base 45.

According to the twisted wire device configured as described above, the OP unit 1 sent out from the sending device 10 is
7. It is inserted into the twisting opening 12 via the hollow shaft 21, the rotating plate 23 and the protruding shaft 49. Further, the strands 2... reach the mandrel 24 through the strand passage hole of the desk 22 and the through hole 40 of the batten 26, and in the mandrel 24, are wound around the spiral shaped groove 25. As shown in FIG. 3, a spiral weave is formed.

Then, the shaped wire 2 is inserted into the through hole 4 of the rotating plate 23.
7 to the adjustment rolls 48 . At this time, the rotating body 19
1, the OP unit 1 and the wire 2, which come out from the twisting port 12, are twisted together to form 0PGW3 as shown in FIG. is wound on.

Here, adjusting the shaping shape of the strand 2 mentioned above means adjusting the shaping rate of the strand 2, and the shaping rate means adjusting the shaping rate of the strand 2.
It is expressed as P/DxlOO (%), where H is the height of the waves (see FIG. 9) and D is the outer diameter of the twisted 0PGW3 (see FIG. 1).

Therefore, the shaping rate is preferably 80 to 100%. If it is over 100%, there will be a vibration where the strands 2 are lifted up from the OP unit 1 when twisted together, and on the other hand, if it is below 80%, the strands will come apart when being cut during terminal processing etc. This is because there is a possibility that the normal twisted wire state cannot be maintained.

However, when it is desired to increase the shaping rate, as shown in FIG.
When you want to lower the shaping rate, as shown in Figure 7,
The outer surface 2b side of the wire 2 may be directed toward the roll 48 side. In this case, since the rolls 48 of the holder 50 are arranged in the longitudinal direction at approximately 1/2 the pitch of the pinch P of the shaped wire 2, as shown in FIG. 6(1), , if the inner surface 2a is the inner diameter side, the next downstream roll 48 has a sixth
As shown in Figure (I[), the inner surface 2a is the inner diameter side, and the seventh
As shown in Figure (1), if the outer surface 2b is on the inner diameter side,
The outer surface 2b of the next downstream roll 48 is on the inner diameter side as shown in FIG. 7 ([1)].

Note that the present invention is not limited to the above-described embodiments, and the design may be changed without departing from the gist of the present invention. For example, the number of adjusting rolls 48 may be increased or decreased, and the number of twisted wires 2 may be freely changed. The number of grooves 25 of the mandrel 24 can be freely set, and the length, pinch, depth, etc. of the grooves 25 of the mandrel 24 can also be freely set, but the pitch of the grooves 25 is smaller than the twisting pinch of the intended stranded wire. It is preferable to do so. Furthermore, the OP unit 1 is not limited to the one that can be rotated, and various other units can be used.

(Effects of the Invention) Since the present invention is configured as described above, it produces the following effects.

■ Wires can be twisted in one step, greatly reducing work time.

■ After the spiral curl is applied with the mandrel 24, the shaping shape is adjusted with the adjusting roll 48, so if you want to change the twist pitch P of the strand 2, adjust the adjusting roll 48. Therefore, it can be easily changed, and the change work is easy.

■ Due to the resistance added by the adjustment rolls 48..., the tension of the strand 2 increases, and the residual stress of shaping can be reduced, and after the stranding, the strand 2 may rise from the OP unit I, or the stranded wire may There is no possibility of wetting itself.

[Brief explanation of the drawing]

FIG. 1 is a simplified front view of one embodiment of the present invention, FIG. 2 is an enlarged front view of main parts, FIG. 3 is an enlarged perspective view of the mandrel, and FIG.
5 is an enlarged sectional view showing the relationship between the mandrel and the wire, FIGS. 6 and 7 are enlarged side views of the roll, and FIG. 8 is an enlarged sectional view of the 0PGW. Figure 9 shows a simplified version of the strands that will be shaped later. DESCRIPTION OF SYMBOLS 1... OP unit, 2... Element wire, 12... Twisting opening, 20... Delivery bobbin, 24... Mandrel, 2
5...Spiral shaped groove, 48...Adjustment roll. Patent Applicant Mitsubishi Cable Industries, Ltd. Box 3 Figure 241 N Y 1 Figure 4 Figure 5 "-Figure 6-" Figure 8 "Figure 7-" Figure 9 Procedural Amendment (Mutsu) Heisei 2 December 27,

Claims (1)

[Claims] 1. In a wire twisting device for twisting a plurality of wires around the outer periphery of an OP unit, a mandrel having a spirally shaped groove in which the wires are guided in a winding manner, A plurality of adjustment rolls are provided between the twisting port and the feeding bobbin for the wire, and a plurality of adjustment rolls are provided between the mandrel and the twisting port to adjust the shaped shape of the wire shaped by the mandrel. A twisted wire device characterized by being provided with.