JP2551866B2 - Stranding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a twisted wire device.

[Problems to be Solved by Conventional Techniques and Inventions]

Conventionally, the stranded wire device has a postform system, a multi-stage roll preform system, a drum twist system,
There were various devices such as a heat treatment system.

That is, in the method of (1), the twisted wire obtained by twisting the wires is passed through the straightener to prevent the shaping failure due to the rigidity of the wires and the untwisting due to the twisting of the twisted wires. Therefore, in the case of the CPGW (optical fiber composite overhead ground wire) in which the OP unit (optical fiber unit) is arranged in the center, there is a limit to the bending process, and in such a case, first, a temporary core wire is used to After twisting like this, this temporary core wire and the OP unit were exchanged. That is, two steps are required, which makes the entire apparatus complicated and the working time becomes long.

In the formula, if the rigidity of the wire is high, proper shaping is impossible.

In the method (1), the strands are separately shaped, and when wound on a drum, the drum itself is rotated and twisted. Therefore, this formula has a drawback that it requires two steps of shaping and twisting.

In the method (1), since the shaped wire or the twisted wire is heated and stress is removed, there is a problem of heat deterioration and heat influence, and further, there is a drawback that the equipment cost becomes expensive.

Therefore, it is an object of the present invention to provide a twisted wire device that requires only one step and does not cause the appearance of a strand to be lifted and the internal OP unit to be damaged.

[Means for solving the problem]

In order to achieve the above-mentioned object, the twisting device according to the present invention is a twisting device in which a plurality of strands are twisted around the outer circumference of an OP unit, and the strands are guided in a winding shape. A mandrel having a spiral groove on the outer peripheral surface is detachably attached to the eye plate between the twisting port and the feed bobbin of the strand through a fixture, and is arranged on the OP unit side with respect to the strand. The adjusting rolls and the adjusting rolls arranged on the side opposite to the OP unit are arranged alternately along the axial direction of the OP unit and reciprocally movable in the axial direction and the radial direction of the OP unit. Then, a roll group for adjusting the shaping shape of the strands shaped by the mandrel is provided between the mandrel and the twist opening.

[Work]

As the strands pass through the mandrel, the strands have a spiral gusset, and the strands with the spiral gussets are arranged at the center by an adjusting roll OP unit (optical fiber unit) It is possible to form a shaped shape corresponding to, and even if the wire is a highly rigid steel wire that is difficult to plastically work, it can be reliably twisted around the outer periphery of the OP unit.

By the way, since the attachment angle of the mandrel with respect to the eye plate can be adjusted (changed), it is possible to correspond to various angles of the strands sent from the sending bobbin. Also, since the mandrel is removable via the attachment,
The mandrel can be easily replaced. Therefore,
It can support OP units of various diameters.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating examples.

FIG. 1 shows a twisted wire device according to the present invention.
As shown in FIG. 8, an OP unit (optical fiber unit) 1 has a plurality of strands 2 twisted around the outer circumference of the OP unit.
A GW (optical fiber composite overhead ground wire) 3 is formed, and the OP unit 1 in this case has an optical fiber 4 on the outer peripheral surface.
The spacers 6 each have a fitting groove 5 into which the ... fits, and a pipe material 7 such as aluminum that covers the spacers 6 and the optical fiber 4. The strand 2 is a steel wire 8 having a substantially fan-shaped cross section.
And a coating layer 9 made of aluminum or the like for coating the steel wire 8. That is, the entire cross section of the wire 2 is substantially fan-shaped.

Thus, as shown in FIG. 1, this device has a delivery device 10 for delivering the OP unit 1, a delivery device 11 for delivering the strands 2 ..., and a twist through which the OP unit 1 and the strands 2 ... The OP unit 1 delivered from the delivery device 10 is provided with an arrow 12, a take-up device 13 for pulling the twisted OPGW3 to the downstream side, and a take-up device 14 for taking up the OPGW3. As described above, the plural strands 2 ... Sent from the sending device 11 are twisted while rotating around the axis of the OP unit 1 by being pulled to the downstream side, passing through the sending device 11 and entering the twisting port 12. Enter the mouth 12, and the OP unit 1 and the wire 2 ...
When it goes out to the downstream side, the OPGW 3 as shown in FIG. 8 is formed, and is sequentially wound on the winding bobbin 15 of the winding device 14.

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

Further, the delivery device 11 includes a support base 17 which is erected on the upstream side.
And a support 18 that is erected on the downstream side and a rotating body 19 disposed between the supporting stands 17 and 18, and a plurality of delivery bobbins 20 are attached to the rotating body 19. There is.

That is, the rotating body 19 includes the hollow shaft 21 through which the OP unit 1 is inserted.
And a disk-shaped desk 22 that is fitted onto the shaft 21. The upstream end of the hollow shaft 21 is rotatably supported by the support 17, and the downstream end of the hollow shaft 21 is a rotary plate 23. The rotating body
A bearing 23 is rotatably supported by a support 18 via bearings.

The delivery bobbins 20 are attached to the desks 22 ... And a plurality of wire passing holes (not shown) are provided in the desks 22. The wire 2 from the delivery bobbins 20 is downstream through these passing holes. Sent to the side.

A mandrel 24 is provided between the twisting hole 12 and the delivery bobbin 20. The mandrel 24 is formed with a spiral groove 25 as shown in FIG. That is, the mandrel 24 is formed by recessing the spiral-shaped groove 25 in a short cylindrical body made of synthetic resin or metal having excellent wear resistance and heat resistance and low friction. In addition, as a synthetic resin, polyacetal (trade name: Delrin),
Monomer casting nylon and the like are preferable.

As shown in FIG. 2, the hollow shaft 21 is integrally provided with an eye plate 26, and a mandrel 24 is attached to the eye plate 26 via an attachment 27. Here, the fixture 27 is an eye plate
26 is composed of a mounting piece 28 which is mounted via a fixing tool such as a bolt and a nut, and a mounting body 29 which is swingably mounted on the mounting piece 28. The mandrel 24 is held by the mounting body 29. There is. That is, as shown in FIG. 4, the fixture main body 29 comprises a first member 30 attached to the attachment piece 28 and a second member 31 detachably attached to the first member 30, The first member 30 is composed of a mounting piece 32, a semi-circular arc-shaped portion 33 connected to the mounting piece 32, and outer flange portions 34, 34 projecting outward from the semi-circular arc-shaped portion 33. The reference numeral 31 includes a semi-circular portion 35 and outer flange portions 36, 36 projecting outward from the semi-circular portion 35. Then, the first member 30 and the second member 31 are overlapped with each other, and the outer flange portions 34 and 36 facing each other are attached to each other by a fastener 37 such as a bolt and a nut (see FIG. 2). Therefore, the semicircular portions 33 and 35 form the fitting hole 38, and the mandrel 24 is fitted into the fitting hole 38. In this case, the fifth
As shown in the figure, the wire 2 is set so as not to come into contact with the fixture 27. As shown in FIG. 2, the fixture main body 29 is attached to the attachment piece 28 with fasteners 39 such as bolts and nuts. In this case, if the fasteners 39 are loosened,
29 swings as indicated by an arrow, and when the fastener 39 is tightened, the main body 29 is fixed. That is, the angle of the main body 29 with respect to the attachment piece 28 can be changed, and the angle of the mandrel 24 with respect to the eye plate 26 can be changed. By changing the angle of the mandrel 24, it is possible to correspond to various angles of the wire 2 delivered from the delivery bobbin 20.

Further, through-holes 40 ... Are penetratingly provided in the eye plate 26, and the wire 2 passing through the through-hole 40 is fitted into the spiral-shaped groove 25 of the mandrel 24.

Then, between the mandrel 24 and the twisting hole 12, the first
As shown in FIG. 2 and FIG. 2, a plurality of adjusting rolls 48 ... Are provided. That is, from the downstream surface of the rotating plate 23 to the hollow shaft 21
A hollow projecting shaft 49 provided on the same axis as
A roll holder 50 is slidably attached to the projecting shaft 49 in the axial direction, and a plurality of rods 51 projecting from the roll holder 50 in the outer radial direction are arranged at a predetermined pitch along the circumferential direction (twist). (The number corresponding to the number of the strands 2 to be combined) are arranged, and the rolls 48 are rotatably attached to the rods 51 ... Further, the rolls 48 are attached to the rod 51 so as to be capable of reciprocating in the radial direction. Therefore, the rolls 48 can reciprocate in the axial direction as indicated by arrows A and B, and can reciprocate in the radial direction as indicated by arrows E and F, and hold each roll 48 at a desired position. be able to.

Then, the holding body 50 ...
Approximately the pitch P (shaped) (see FIG. 9)
The rolls 48 of the most upstream holding body 50 are arranged at a pitch of 1/2, and as shown in FIGS. 6 (I) and 7 (I), the rolls 48 are arranged on the inner side (projecting shaft 49 side). Wire 2 fits to the next holder
As shown in FIGS. 6 (II) and 7 (II), the roll 48 of 50 has the wire 2 fitted to the outside (the side opposite to the protruding shaft 49).
That is, the strands 2 are arranged on the inner side, the outer side and
The fitting is performed alternately so as to be the inner side and the outer side, and the shaping shape of the strand 2 shaped by the mandrel 24 is adjusted.
With respect to the wire 2, the adjusting roll 48 arranged on the OP unit 1 side and the adjusting roll 48 arranged on the opposite OP unit 1 side
Are alternately arranged in the OP unit 1 along the axial direction. Further, the roll 48 is preferably made of the same material as the mandrel 24, because it is desirable that the roll 48 has excellent wear resistance and heat resistance and low friction.

The take-up device 13 is two or one (two in the figure).
Individual capstans 41,41, and the capstans 41,41
OPGW3 is wound around the floor a plurality of times, and OPGW3 is pulled by the rotation of the capstans 41, 41 as shown by the arrow.
The lower half is buried. In addition, the above-mentioned collection device
An endless track wheel type take-up machine having a pair of upper and lower rotating endless track wheels may be used for 13.

Further, the twisting hole 12 is formed by a die 43 provided on the base 42, the bobbin 16 of the feeding device 10 is pivotally supported by the support base 44, and the bobbin 15 of the winding device 14 is pivotally supported by the support base 45. ing.

Therefore, according to the twisted wire device configured as described above,
The OP unit 1 delivered from the delivery device 10 is inserted into the twisting port 12 via the support stand 17, the hollow shaft 21, the rotary plate 23, and the protruding shaft 49. Further, the wires 2 reach the mandrel 24 through the wire passing holes of the desk 22 and the through holes 40 of the eye plate 26, and in the mandrel 24, the mandrel 24 is wound around the spiral shaped groove 25 to be guided and guided. As a result, as shown in FIG.

Then, the shaped wire 2 has a through hole 47 in the rotary plate 23.
Through the adjusting rolls 48…, where each roll 48…
The shaped shape of the wire 2 is adjusted by and is inserted into the twisted hole 12. A roll group for adjusting the shaping shape of the strand 2 shaped by the mandrel 24 is formed by the plurality of adjusting rolls 48 .... At this time, the rotating body 19 rotates around the axis of the hollow shaft 21, and the OP unit 1 and the strands 2 coming out of the twisting port 12 ...
Are twisted together to form OPGW3 as shown in Fig. 8,
It is wound around the winding bobbin 15 of the winding device 14.

Here, the adjustment of the shaped shape of the strand 2 means the strand 2
The shaping ratio is that the height of the wave of the wire 2 (see FIG. 9) is set to H and the outer diameter dimension of the twisted OPGW3 is set to D (first (See the figure), it is shown as H / D × 100 (%).

Therefore, the shaping ratio is preferably 80 to 100%. If it is 100% or more, the strand 2 may float from the OP unit 1 when it is twisted, and conversely, if it is 80% or less, the strand 2 may be broken at the end treatment. This is because there is a risk that they may come apart and the normal twisted wire state may not be maintained.

Then, when it is desired to increase the shaping rate, as shown in FIG. 6, the inner surface 2a side of the wire 2 is directed to the roll 48 side, and when the shaping rate is desired to be lowered, as shown in FIG. The outer surface 2b side of the wire 2 may be directed to the roll 48 side. In this case, since the rolls 48 of the holding bodies 50 are arranged in the longitudinal direction at a pitch of about 1/2 the pitch P of the shaped strands 2,
As shown in FIG. 6 (I), if the inner surface 2a is on the inner diameter side, the next downstream roll 48 has the inner surface 2a on the inner diameter side as shown in FIG. 6 (II). As shown in FIG. 7 (I), if the outer surface 2b is on the inner diameter side, the next roll 48 on the downstream side is formed.
The outer surface 2b is on the inner diameter side as shown in FIG.

Note that the present invention is not limited to the above-described embodiments, and design changes can be freely made without departing from the gist of the present invention.
The number of adjusting rolls 48 can be freely increased or decreased, the number of strands 2 to be twisted can be freely set, and further, the length, pitch, depth, etc. of the grooves 25 of the mandrel 24 can be freely set. However, it is preferable that the pitch of the grooves 25 be smaller than the intended twist pitch of the twisted wire. Also, OP unit 1
However, various units can be used as well.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

Since the mandrel 24 has the spirally shaped groove 25 formed on the outer peripheral surface, the mandrel 24 itself can be easily manufactured.

Mandrel 24 can be replaced, pitch and / or
Alternatively, by preparing a plurality of mandrels having different depths, it is possible to deal with OP units having various diameters.

Stranding can be done in one step, working time can be greatly shortened, and the strand 2 does not lift up from the OP unit 1 after the twisting, and the appearance of the twisted wire is good, and the entire device It is possible to provide this device at low cost without being complicated.

Replace mandrel 24 and twist pitch P of wire 2
In case of changing the
48 can be moved in the longitudinal direction (axial direction) and / or the radial direction of the OP unit 1 to correspond to the twist pitch P. That is, the wires 2 having various twist pitches P
Can be formed with OPGW3.

Due to the resistance added by each adjusting roll 48 of the roll group, the tension of the wire 2 is increased, and the residual stress of diametrization can be reduced. This prevents the strands 2 from rising from the OP unit 1 and twisting of the twisted wire itself after the twisted wire.

[Brief description of drawings]

1 is a simplified front view of an embodiment of the present invention, FIG. 2 is an enlarged front view of essential parts, FIG. 3 is an enlarged perspective view of a mandrel, FIG. 4 is a sectional view of essential parts of a fixture, and FIG. Is an enlarged sectional view showing the relationship between the mandrel and the strands, FIGS. 6 and 7 are enlarged side views of the roll, FIG. 8 is an enlarged sectional view of the OPGW, and FIG. 9 is a simplified diagram of the strands after shaping. Is. 1 …… OP unit, 2 …… strand, 12 …… strand, 20 ……
Delivery bobbin, 24 …… mandrel, 25 …… helical groove,
48 …… Adjusting roll.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-48-48740 (JP, A) JP-A-58-184030 (JP, A) JP-A-60-154832 (JP, A) Actual development Sho--60- 190441 (JP, U) JP-B 3-71928 (JP, B2) JP-B 54-28495 (JP, B2)

Claims (1)

(57) [Claims] 1. A twisting device for twisting a plurality of strands around the outer periphery of an OP unit, wherein a mandrel having a spiral groove with which the strands are guided to be wound is formed on an outer peripheral surface, It is removably attached to the eye plate between the twisting port and the delivery bobbin of the strand through a fixture, and is arranged on the OP unit side with respect to the strand and on the opposite OP unit side. The adjusting rolls provided are alternately arranged along the axial direction of the OP unit and reciprocally movable in the axial direction and the radial direction of the OP unit, and the strand formed by the mandrel. A twisted wire device, wherein a roll group for adjusting the shaped shape of the above is provided between the mandrel and the twisting opening.