JPS6248807B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stranding device for glass optical fibers, and more specifically, to a stranding device for glass optical fibers, which is a versatile type that can be used in various ways, and which is particularly suitable for twisting glass optical fibers. It is related to the device.

Recently, twisted glass optical fibers have begun to be used as twisted wires for communication cables, but the characteristics of twisted glass optical fibers are as follows.
For example, unlike metal wires such as copper, there is no plasticity, so the direction of twisting is opposite to that of twisting.
It is 100% necessary. In view of recent developments, it is an object of the present invention to provide a novel combustion line device suitable for twisting such glass optical fibers.

An embodiment of the invention will be described with reference to FIG.

The wire feeding device 1 includes a feeding bobbin 13 rotatably attached to a cradle 12 which is rotatably supported on a base 11 so as to feed out a wire _w0 . motor 14
It is driven to rotate with the running direction of the core wire w ₀ as the axis.

The strand feeding/twisting device, generally indicated by 2, sends out the strands w _e to be twisted into the core wire w ₀ and gives them a twist, and thus the strands w _e given these twists. This is a device for twisting together.

The main body of the strand sending out twisting device 2 consists of a pair of rotating body substrates 21A and 21B fixed in an axially separated manner to a hollow shaft 22 on which the core wire _w0 runs.
This is a rotating body supported so as to be rotationally driven around this hollow shaft 22 via a pulley 24 fixed to the end of the hollow shaft 22. Between the rotating body substrates 21A and 21B and around the hollow shaft 22, rotary flyers 26 of a number equal to the number of wires to be twisted are arranged equiangularly so as to be freely rotatable. Fixed. Also, the rotating body board 2
1A, an intermediate gear 26B is rotatably supported and meshes with the planetary gear 26A.

This intermediate gear 26B meshes with a sun gear 25 for driving, which is provided coaxially with the hollow shaft 22 and fixed to the bearing body of the hollow shaft 22 on the outside of the rotating body base plate, and here the sun gear 25, the intermediate gear 26B, A gear train of planetary gears 26A is formed.

Inside the rotary flyer 26, a floating frame 27 is rotatably supported with respect to the rotary flyer 26, and on this floating frame 27, a delivery bobbin 28 for the wire w _e is rotatably provided.

A wire splitting plate 23 is fixed to the end of the hollow shaft 22 that protrudes beyond the rotary substrate 21A, and serves to organize and position each strand w _e flowing into the twisting die 3 provided downstream. . In addition, 27A, 2
7B is a guide pulley provided on the rotary flyer 26, and 29 is an under roller provided in contact with the lower part of the rotary base plate 21B to rotatably support it.

A rotary take-off device 4 is provided downstream of the stranding die 3, which includes an endless take-off belt means 42 for taking off the twisted strands, and a rotary frame 41 that is rotatable around the traveling direction of the strands. It is provided in

The one designated as 5 as a whole is the wrapping arm 5
1 is a taping device which is rotationally driven, and in the figure, 52 is a tape pad, and 53 is a tape.

A rotary winding device 6 is provided at the terminal end of the apparatus of the present invention, and a winding bobbin 6 is connected to a flyer 61 that can rotate around the traveling direction of the stranded wire w.
3 is rotatably supported. Furthermore, 62
is an under roller that supports the flyer 61.

The rotary take-up device 4, the taping device 5, and the rotary take-up device 6 are rotationally driven in common by a motor 43 via a common drive shaft 44. What is important here is that the rotary take-up device 4 and the rotary take-up device 6 are driven to rotate in the same direction and with the same rotation.

Next, the operation of the device of the present invention will be explained, paying particular attention to the amount of twisting given to the strands and the twisting of the stranded wires.

Now, the rotation speed of the entire rotating body 2 is clockwise around the hollow shaft 22 when viewed from downstream, and the rotational take-up device ₄ (therefore, the same applies to the rotation winding device 6) is rotated in the opposite direction to the rotation body 2. , that is, it is rotated at a rotation speed n ₃ in the counterclockwise direction when viewed from downstream. Therefore, the rotary flyer 26 (planetary gear 26A) is rotated counterclockwise through two gears, the sun gear 25 and the intermediate gear 26B, but by selecting the number of teeth of these gears. The rotation speed of the rotary fryer 2 is set to _n1 .

Since the rotary flyer 2 is rotated counterclockwise at a rotation speed n ₁ , the wire w _e sent out from the sending bobbin 28 is connected to the floating frame 27 and the guide pulley 27A.
_n times in the S twisting direction between the guide pulley 2
Where it exits from 7B to the stationary rotating body substrate 21B on the outside, it is similarly twisted _once in the S-twisting direction, for a total of 2n ₁ times in the S-twisting direction. This strand w _e , which has been twisted only _2n times, is given Z twist only _n times by _n2 rotations of the rotating body 2 in the clockwise direction when passing through the twisting die 3.
The S twist is reduced by n ₂ , and in the end, (2n ₁ −n ₂ ) of twists remain in the strand in the S twist direction.

These strands w _e are put together in the twisting die 3 and are twisted for twisting by the rotary take-off device 4, but the rotating body 2 on the upstream side of the twisting die ₃ is Clockwise rotation, rotating The rotation take-up device 4 rotates counterclockwise _n3 in the opposite direction, so in the case of Fig. 1, when wringing a towel etc. by hand, the left hand (corresponding to the rotating body 2) is rotated. Using exactly the same logic as when twisting the right hand (corresponding to the rotary pulling device 4) on the other side towards you, the bundled strands are twisted into a Z twist with the size of the sum (n ₂ + n ₃ ). .

Therefore, if n ₁ = 1.5 and n ₂ = n ₃ = 1, then by substituting these values into the above equation, the untwisting of the strand w _e is 2 for S twist, and the twist for twisting is Z.
This means that the twist is 2, or 100%, in the opposite direction.

Note that since it is necessary to avoid twisting the core wire w ₀ , the number of rotations n ₃ in the counterclockwise direction when looking at the cradle 12 of the core wire delivery device 1 from downstream is 1 in the above example. All you have to do is rotate it.

It should be noted that the strand sending out twisting device 2 of this invention device is the second one.
Compared to the conventional device shown in the figure, the conventional device has a floating frame 10 on which a wire delivery bobbin 28 is placed.
1 is rotatably supported directly on the rotating body substrates 21A and 21B, so that the floating frame 1 is
Since the wire 01 is stationary, the strands sent out from the floating frame 101 are twisted once in the opposite direction to the rotational direction of the rotating body. Therefore, when the rotating body rotates around the hollow shaft 22 at a rotation speed n ₂ as in the above example in the clockwise direction when viewed from downstream, the strand w _e has the following in the opposite direction.
In other words, n ₂ twists are given in the S twist direction. The position at which the strand w _e is twisted to this extent is in the range from when it exits the rotating body substrate 21B to just before it enters the twisting die 3. Therefore, there is no need to subtract n ₂ as in the above example.

On the other hand, if we consider the twist of twisting the wires w given such amount of twist, we get
As in the above example, since (n ₂ + n ₃ ), the untwisting ratio in this case, that is, the ratio of the twisting twist to the twisting twist, is n ₃ / (n ₂ + n ₃ ), which is naturally 1. smaller and the twist rate is at least 100%
It turns out that it is not suitable for the necessary optical fibers.

Considering the fact that the rotational speed of the rotating body on which many floating frames 101 are mounted cannot be expected to be high due to reasons such as stretching force, the low efficiency of the conventional device shown in Fig. 2 can be understood. Will.

In addition, in the device of this invention, basic twisting is possible even if the rotating take-up device 4 shown in FIG. .

FIG. 3 is a practical design drawing showing an example of the entire device when the rotary take-off device 4 is omitted. Further, the strand feeding device 8 is different in that it is configured in two stages in the direction in which the strands travel.

As is clear from the above description, this invention allows the untwisting rate to be sufficiently increased because the strands are fed out using a twice-twisting method, and the twisting efficiency can be increased by using a rotating winding device in combination. It has many advantages, such as the possibility of highly efficient twisting of glass optical fibers and the like.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of the present invention;
FIG. 2 is a side cross-sectional view showing a conventional wire-feeding stranding device, FIG. 3 is a side view showing another embodiment of the present invention, and FIG. 4 is a plan view showing the same strand-feeding stranding device. be. 1... Core wire delivery device, 13... Core wire delivery bobbin, 2... Element wire delivery twisting device, 21A, 21B...
... Rotating body substrate, 22 ... Hollow shaft, 25 ... Sun gear, 26A ... Planet gear, 26 ... Rotating flyer, 28 ... Wire delivery bobbin, 23 ... Segment plate, 3 ... Twisting Dice, 4...Rotary take-off device,
42... Endless belt means for take-up, 5... Taping device, 6... Rotary winding device, 63... Winding bobbin.

Claims (1)

[Scope of Claims] 1. (a) A wire feeding bobbin 13 rotatably provided around the running direction of the core wire w ₀ and a drive means for rotating the bobbin 13 in one direction about the running direction as an axis. (b) A wire feeding bobbin 28, which has a hollow shaft 22 on which the core wire runs, and which feeds out the wire w _e to be twisted onto the core wire, is floating. Rotating body substrates 21A each rotatably supporting the rotary fryer 26 supported on the frame 27 and rotatably supporting the floating frame;
21B, a planetary gear 26A fixed to the rotary fryer, and an intermediate gear 26B rotatably supported by the rotating body base plate and meshing with the planetary gear.
and a sun gear 25 which is fixed to the bearing body of the hollow shaft on the outside of the rotating body base so as to take a coaxial position with the hollow shaft, and meshes with the intermediate gear.
a gear train consisting of; a segment plate 23 fixed to the end of the hollow shaft; means for rotationally driving the hollow shaft in a direction opposite to the rotational driving direction of the core wire delivery bobbin; A strand feeding device 2 comprising a stranding die 3 located downstream of the plate.
(c) A winding bobbin 63 that winds the stranded wire w and is rotatably supported around the running direction of the stranded wire,
A twisting device for glass optical fibers, comprising a rotating winding device 6 including means 43 and 44 for rotating the winding device 6 in the same direction and at the same speed as the wire feeding bobbin. 2 (a) A core wire including a core wire delivery bobbin 13 that is rotatably provided around the running direction of the core wire _w0 , and a drive means 14 that rotates the bobbin 13 in one direction with the running direction as an axis. (b) A strand sending bobbin 28 having a hollow shaft 22 on which the core wire runs and feeding out the strands w _e to be twisted to the core wire is supported on a floating frame 27. , rotary flyer 26 that rotatably supports this floating frame is rotatably mounted on rotary body substrates 21A and 21B, respectively.
and a planetary gear 2 fixed to the rotary flyer.
6A, rotatably supported by the rotating body substrate;
A gear consisting of an intermediate gear 26B that meshes with the planetary gear, and a sun gear 25 that is fixed to the bearing body of the hollow shaft outside the rotor base plate so as to be coaxial with the hollow shaft and meshes with the intermediate gear. a branching plate 23 fixed to an end of the hollow shaft, means for rotationally driving the hollow shaft in a direction opposite to the rotational driving direction of the core wire delivery bobbin, and downstream of the branching plate. (c) An endless belt means 42 for taking off is provided rotatably around the taking direction, and is arranged in the same direction and in the same direction as the core wire sending bobbin. a rotating pulling device 4 that is rotationally driven at the same speed; and (d) a stranded wire w that is pulled by the rotating pulling device.
a taping device 5 that wraps a tape 53 around
and (e) a winding bobbin 63 for winding the stranded wire w is rotatably supported around the running direction of the stranded wire,
A twisting device for glass optical fibers, comprising a rotary winding device 6 that is rotationally driven in the same direction and at the same speed as the rotary winding device.