JP2782022B2 - Optical fiber ribbon manufacturing method and optical fiber ribbon manufacturing apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber ribbon cable and, more particularly, to a method of manufacturing an optical fiber ribbon housed in a storage groove of a spacer and an apparatus for manufacturing the optical fiber ribbon.

[0002]

2. Description of the Related Art Generally, an optical fiber has a remarkable difference in physical or mechanical characteristics as compared with a conventional copper conductor. The characteristics and ease of handling are improved. However, when a cable is used, when a large external force such as lateral pressure is applied to the optical fiber core, a slight bending (microbending) occurs in the optical fiber core, and transmission loss increases. Care must be taken. Considering this point, there is a spacer type as a structure of the optical fiber cable. This spacer type fiber cable is
The structure is such that the mechanical properties of the cable can be improved, and in particular, high reliability against lateral pressure can be obtained.

The optical fiber is a glass fiber drawn from an electric furnace and spun in an optical fiber drawing apparatus. Since the surface of the glass fiber is easily damaged in this state and has low mechanical strength, the glass fiber is coated with a resin to form a single-core optical fiber core or a multi-core tape core.

[0004] This tape core is conventionally manufactured by an optical fiber tape core manufacturing apparatus 100 as shown in FIG. That is, a plurality of (for example, four, six, eight, etc.) optical fiber wires 120 supplied from the supply device 110 are supplied to the coating head 140 via the guide member 130. In the coating head 140, a plurality of (for example, four, six, eight, etc.) optical fiber strands 120 are cured by UV curing of an acrylate resin such as an acrylate, an acrylate or an acrylate resin. The conductive resin 150 is coated (primary coating) as shown in FIG. Then, UV (ultraviolet)
t) In a resin curing furnace 160 such as a furnace, the thermosetting resin 170 coated on the plurality of optical fibers 120 is cured to form a plurality of (four, six, eight, etc.) tape cores 180.
Are taken up by the take-up device 190 and wound up by the take-up device 200.

[0005] The tape core 16 manufactured as described above.
No. 0 is housed in a storage groove formed in the longitudinal direction on the outer peripheral surface of the tensile strength member (tension member), is wrapped and held down by a press-wrapping tape, and covers the outer sheath (sheath) on the press-wrapping tape. Produces optical fiber cables.

[0006]

As described above, in manufacturing the tape core wire 150, the optical fiber 12 is used.
A plurality of zeros are arranged, and the plurality of optical fiber strands 120 are collectively extruded and coated with a UV curable resin 170 by an extruder. The UV-curable resin 170 is cured by irradiating ultraviolet rays, and upon curing, contracts toward the center in the direction indicated by the arrow in FIG. This contraction applies stress to the optical fiber 120 itself. That is, when the tape core 170 is manufactured, a stress due to shrinkage is generated immediately after the coating resin of the optical fiber 120 is cured. Although the stress due to this shrinkage decreases with time as shown in FIG. 6, it does not reach the point of complete relaxation, but only slightly shortens the stress relaxation time even under good conditions.

The stress caused by this shrinkage is the
20 appears as a side pressure on the optical fiber
0 is in a state where an external force is applied. The stress on the optical fiber 120 appears as a distortion of the optical fiber 120, and this distortion causes the optical fiber 120 to bend slightly (microbending), thereby increasing transmission loss. Have a point.

Further, the transmission characteristics of the tape core wire manufactured by the conventional method have a drawback that it is difficult to evaluate the transmission characteristics immediately after the manufacture due to the influence of the curing shrinkage of the collectively coated resin and the phenomenon of relaxation of shrinkage strain over time. This is because the shrinkage of the batch coating resin is maximum immediately after the production, so that temporary micro-bending or the like occurs in the optical fiber, which adversely affects the transmission characteristics. Although the shrinkage strain is eliminated with the lapse of time due to the relaxation of the stress of the resin, there is a problem that it is difficult to evaluate the transmission characteristics with reliability immediately after the production.

According to the present invention, stress on an optical fiber due to curing shrinkage of a collective coating layer of a plurality of optical fibers immediately after manufacturing is alleviated in a short time, and adverse effects on transmission characteristics due to shrinkage strain are eliminated in a short time. It is an object of the present invention to provide an optical fiber ribbon manufacturing method and an optical fiber ribbon manufacturing apparatus which can perform the above-described processes.

[0010]

In order to achieve the above object, an optical fiber tape manufacturing method according to the present invention is directed to an optical fiber manufactured by arranging a plurality of optical fibers in parallel, resin-coating and curing the resin. In a method of manufacturing a tape core, a plurality of optical fiber strands arranged in parallel are coated with a resin and cured, and then heated to a predetermined temperature according to the linear velocity .

In order to achieve the above object, a method of manufacturing an optical fiber ribbon according to the present invention is directed to a method of manufacturing an optical fiber ribbon, wherein a plurality of optical fibers are arranged in parallel, resin-coated and cured. In the manufacturing method, after a plurality of optical fiber strands arranged in parallel are coated with a resin and cured, the optical fiber tape is bent in a predetermined direction at a predetermined curvature, and
Is obtained by the so that given a uniform elongation relative to both sides of the core.

Further, in order to achieve the above object, a method of manufacturing an optical fiber ribbon according to the present invention is directed to a method for manufacturing an optical fiber ribbon, which comprises manufacturing a plurality of optical fibers in parallel by resin coating and curing. In the manufacturing method, after a plurality of optical fiber strands arranged in parallel are resin-coated and cured, the optical fibers are bent in a predetermined direction at a predetermined curvature while being heated to a predetermined temperature corresponding to the linear velocity .

According to another aspect of the present invention, there is provided an optical fiber ribbon manufacturing apparatus comprising: a supply device for supplying a plurality of optical fiber wires; and a plurality of optical fibers supplied from the supply device. A coating head for coating the strand with a UV-curable resin, a resin curing furnace for curing the UV-cured resin coated in the coating head, and a linear velocity of the tape core obtained by curing the coated resin in the resin curing furnace. A heating device for heating to a predetermined temperature according to the temperature, a take-up device for drawing the tape core heated by the heating device with a predetermined tension, and a winding device for winding the tape core drawn by the take-up device It is constituted by:

Further, in order to achieve the above object, an apparatus for manufacturing an optical fiber ribbon according to the present invention comprises a supply device for supplying a plurality of optical fiber wires, and a plurality of optical fibers supplied from the supply device. A coating head that coats the strands with a UV-curable resin, a resin curing furnace that cures the UV-cured resin coated in the coating head, and a tape core that has the cured resin cured in the resin curing furnace is bent in a predetermined direction at a predetermined curvature. Fiber optic tape
A force bending apparatus Ru gives a uniform elongation relative to both sides of the core wire, and a take-up device for taking up the ribbon applied bending at a predetermined tension in a forced bending apparatus, a ribbon taken off with take-off device And a winding device for winding.

Still further, in order to achieve the above object,
An apparatus for manufacturing an optical fiber ribbon according to the present invention includes a supply device that supplies a plurality of optical fiber wires, a coating head that coats a plurality of optical fiber wires supplied from the supply device with a UV curable resin, A resin curing furnace that cures the UV-cured resin coated in the head, a take-up device that takes out the tape core obtained by curing the coating resin in the resin curing furnace with a predetermined tension, and a tape core that is taken out by the take-off device. A winding device for winding,
The tape core wound in the winding device is bent in a predetermined direction at a predetermined curvature, and the optical fiber is wound on both sides of the optical fiber tape core.
Those constructed by forced bending apparatus Ru given elongation uniform.

Then, the above-mentioned forced bending device is connected to the inside of the device.
It is preferable to be able to heat to a predetermined temperature according to the linear speed of the tape core wire .

[0017]

[Function] From the supply of the optical fiber from the supply device, coating of the UV curable resin with the coating head via the guide member, curing of the coated resin in the resin curing furnace, and according to the linear speed.
It is heated to a predetermined temperature set in advance and is taken up and wound up.

The supply of the optical fiber from the supply device, the coating of the UV curable resin by the coating head via the guide member, the curing of the coating resin in the resin curing furnace, and the bending of the optical fiber tape at a predetermined curvature in a predetermined direction. Pairs on both sides of the conductor
To give a uniform elongation and take up and take up.

The supply of the optical fiber from the supply device, the coating of the UV curable resin with the coating head via the guide member, the curing of the coated resin in the resin curing furnace, and the linear velocity.
The optical fiber tape is bent in a predetermined direction at a predetermined curvature while being heated to a predetermined temperature set in accordance therewith so as to provide uniform elongation to both sides of the optical fiber ribbon, and is taken up and wound.

The supply of the optical fiber from the supply device, the coating of the UV-curable resin with the coating head via the guide member, the curing of the coated resin in the resin curing furnace, the take-up and take-up, and then the pay-out. Bend in a predetermined direction at the curvature, and make uniform on both sides of the optical fiber ribbon.
Give it stretch and wind it up.

[0021]

Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of an optical fiber ribbon manufacturing method and an optical fiber ribbon manufacturing apparatus according to the present invention.

Referring to FIG. 1, reference numeral 1 denotes an optical fiber ribbon manufacturing apparatus for manufacturing a tape core from a plurality of optical fiber strands. Reference numeral 2 denotes a supply device for feeding out an optical fiber 3 wound around a drum at a constant speed. The supply device 2 is provided with the number of drums of the optical fiber 3 corresponding to the number of cores for manufacturing the tape core.

Reference numeral 4 denotes a guide member for guiding a plurality of optical fiber wires 3 supplied from the supply device 2 in a flat shape. Reference numeral 5 denotes a coating head which applies a plurality of (for example, four, eight, etc.) optical fiber wires 3 arranged in a flat shape guided from a guide member 4 to an acrylate, an acrylate, an acrylate, or the like. It extrudes and coats (primary coating) a UV-curable resin such as an acrylate resin such as a resin. This UV curable resin is
It has a property of curing when irradiated with ultraviolet rays, and usually has a property of being cured by 90% or more by simply irradiating it for about 1 second after coating with a UV curable resin.

Reference numeral 6 denotes a resin curing furnace, for example, UV (ult)
(Raviolet) furnace and the like. The resin curing furnace 6 in the present embodiment is a UV furnace because the resin coated on the optical fiber 3 is a UV curable resin. When the UV-curable resin coated on the plurality of optical fiber strands 3 is cured in the resin curing furnace 6, a plurality of (four in the present embodiment) tape cores 7 are manufactured.

Numeral 8 denotes a forced bending device which forcibly applies a predetermined bending after the resin coated on the optical fiber 3 is cured in the resin curing furnace 6 by a plurality of pulleys having a predetermined curvature. It is configured. The plurality of pulleys constituting the forcible bending device 8 are formed to have a curvature that does not deteriorate the light transmission characteristics of the optical fiber 3, and the plurality of pulleys bend the tape core wire 7 in a predetermined direction. It is configured as follows. Therefore, in the forced bending device 8, the forced curing is applied to the tape core wire 7 while the plurality of pulleys are suspended and run, and the UV curable resin covered with the plurality of optical fiber wires 3 and cured and contracted. Is given elongation. The installation of the plurality of pulleys in the forced bending device 8 is for imparting uniform elongation to both side surfaces of the tape core wire 7.

The stretching of the collective coating layer coated on the plurality of optical fiber strands 3 by the forced bending device 8 has the function of relaxing and promoting the shrinkage of the collective coating resin. The shrinkage distortion of the collective coating resin can be eliminated in a short time.

Reference numeral 9 denotes a take-off device, which pulls the tape core wire 7 coated with the UV curable resin which has been bent in the forced bending device 8 with a predetermined tension and pulls it. 1
Reference numeral 0 denotes a winding device, which winds the tape core wire 7 drawn by the drawing device 9 around a drum or the like.

The tape core 7 thus manufactured
Is housed in a housing groove formed in the longitudinal direction on the outer peripheral surface of the tensile strength member (tension member), is wound and held down by a holding winding tape, and a sheath (sheath) is placed on the holding winding tape.
To produce an optical fiber cable.

Further, it is preferable to heat the surfaces of a plurality of pulleys constituting the forced bending device 8 of the optical fiber ribbon manufacturing apparatus 1 in the embodiment shown in FIG. Then, the tape core wire 7 formed by curing the resin coated on the optical fiber 3 in the resin curing furnace 6 becomes:
In the forced bending device 8, a predetermined bending is forcibly applied while being heated while being suspended by a plurality of pulleys. The heating of the tape core wire 7 can add an effect of increasing the stretching speed. The surface of the plurality of pulleys is heated by setting the temperature (for example, 10) in accordance with the linear speed of the tape core wire 7 running while suspended on the plurality of pulleys.
0 ° C.).

Further, the inside of the forced bending device 8 of the optical fiber ribbon manufacturing apparatus 1 in the embodiment shown in FIG. 1 may be heated. Then, the tape core wire 7 formed by hardening the resin coated on the optical fiber 3 in the resin hardening furnace 6 is suspended by a plurality of pulleys in the forced bending device 8 while traveling. A predetermined bending is forcibly applied while being heated. The heating of the tape core wire 7 can have an effect of increasing the stretching speed. The heating in the forced bending device 8 is performed by setting the temperature (for example, 200 mm) in accordance with the linear velocity of the tape core wire 7 suspended in a plurality of pulleys and traveling in the forced bending device 8.
° C).

FIG. 2 shows another embodiment of the optical fiber ribbon manufacturing method and the optical fiber ribbon manufacturing apparatus according to the present invention.

In the figure, reference numeral 20 denotes an optical fiber tape manufacturing apparatus, 21 denotes a supply apparatus, 22 denotes an optical fiber, 23 denotes a guide member, 24 denotes a coating head,
5 is a resin curing furnace, 26 is a tape core, 27 is a take-off device,
Reference numeral 28 denotes a winding device, which is an optical fiber tape core manufacturing device 1, a supply device 2, an optical fiber 3, a guide member 4, a coating head 5, a resin curing furnace 6, a tape core 7, and a take-up device shown in FIG. The device 9 is the same as the winding device 10.

In this embodiment, the forced bending device 8 shown in FIG.
Is provided with a heating device 29 in place of.

The heating device 29 includes the coating head 24
In the above, the tape core 26 coated with the UV-curable resin is cured in a resin curing furnace 25, and the tape core 26 is heated to a predetermined temperature. The temperature of the heating device 29 is set (for example, 200 ° C.) in accordance with the linear velocity of the tape core wire 26 traveling in the heating device 29.

Therefore, according to the present embodiment, the heating of the collective coating layer coated on the plurality of optical fiber wires 22 by the heating device 29 works to alleviate the shrinkage of the collective coating resin. The shrinkage distortion of the collective coating resin on the optical fiber 22 can be eliminated in a short time.

FIG. 3 shows another embodiment of the optical fiber ribbon manufacturing method and the optical fiber ribbon manufacturing apparatus according to the present invention.

In this embodiment, the supply of the optical fiber from the supply device, the coating of the UV curable resin with the coating head via the guide member, the curing of the coated resin in the resin curing furnace, and the drawing of the tape core. The winding process is the same as that of the conventional optical fiber ribbon manufacturing apparatus, and thus is omitted. That is, FIG. 3 shows a forced bending device that bends the tape core wound by the winding device in a predetermined direction at a predetermined curvature.

In the drawing, reference numeral 30 denotes a forcible bending device which forcibly applies a predetermined bending to the tape core wound by the winding device. Reference numeral 31 denotes a feeder, which is constituted by a drum on which a tape core is wound. Reference numeral 32 denotes a tape core wire transmitted from the transmitter 31. 33, 34
Is a drive roll for applying a driving force to cause the tape core 32 sent from the feeder 31 to run at a predetermined speed. Numeral 35 denotes a dancer roll for applying a predetermined load to the running tape core 32. 36 is a load for determining a predetermined load to be applied to the running tape core 32. A winder 37 winds the tape core 32 that has passed through the drive roll 33, dancer roll 35, and drive roll 34.

The drive roll 33, dancer roll 35, and drive roll 34 constituting the forced bending device 30 are formed to have a curvature that does not deteriorate the light transmission characteristics of the optical fiber. The tape core is configured to bend in a predetermined direction. Therefore,
In this forced bending apparatus 30, forcible bending is given to the tape core wire while a plurality of rolls are suspended and run,
Elongation is given to the UV curable resin which has been coated and covered with a plurality of optical fiber wires and cured and shrunk. The installation of the plurality of rolls in the forced bending device 30 is for giving uniform elongation to both side surfaces of the tape core wire.

The surfaces of a plurality of rolls constituting the forced bending device 30 of the optical fiber ribbon manufacturing apparatus in the embodiment shown in FIG. 3 may be heated. Then
The tape core wire formed by curing the resin coated on the optical fiber is forcibly subjected to predetermined bending while being heated while traveling while being suspended by a plurality of rolls in the forcible bending device 30. Can be This heating of the tape core wire can have the effect of increasing the stretching speed. The surface of the plurality of rolls is heated by setting the temperature (for example, 100 ° C.) in accordance with the linear speed of the tape core wire that runs while being suspended by the plurality of rolls.

Further, the inside of the forced bending apparatus 30 of the optical fiber ribbon manufacturing apparatus in the embodiment shown in FIG. 3 may be heated. Then, the tape core wire formed by curing the resin coated on the optical fiber is heated in a predetermined bending while traveling while being suspended by a plurality of rolls in the forced bending device 30. Will be forcibly added. This heating of the tape core wire can have the effect of increasing the stretching speed. In addition, the heating in the forced bending device 30 is performed by setting the temperature (for example, 200 ° C.) in accordance with the linear velocity of the tape core wire suspended in the plurality of rolls and traveling in the forced bending device 30. Become.

[0042]

Since the present invention is configured as described above, the following effects can be obtained.

After a plurality of optical fiber strands are coated with a resin and cured, they are heated to a predetermined temperature according to the linear velocity. The stress on the optical fiber due to the curing shrinkage can be reduced in a short time, and the adverse effect on the transmission characteristics due to the shrinking strain can be eliminated in a short time.

After a plurality of optical fiber strands arranged in parallel are coated with a resin and cured, they are bent at a predetermined curvature in a predetermined direction so as to have uniform elongation on both sides of the optical fiber ribbon.
Since you so that given to relieve stress on the optical fiber due to the curing shrinkage of the collective coating layer of a plurality of optical fibers immediately after preparation in a short time, to eliminate the adverse effect on the transmission characteristics due to shrinkage strain in a short time be able to.

After a plurality of parallel optical fiber strands are coated with a resin and cured, the optical fiber strands are bent in a predetermined direction at a predetermined curvature while being heated to a predetermined temperature according to the linear velocity, and are then coated on both sides of the optical fiber ribbon. , The stress on the optical fiber due to the curing shrinkage of the collective coating layer of multiple optical fibers immediately after manufacturing is alleviated in a short time, and the transmission characteristics due to shrinkage strain are adversely affected. Can be eliminated in a short time.

A supply device for supplying a plurality of optical fiber wires, a coating head for coating a plurality of optical fiber wires supplied from the supply device with a UV curable resin, and curing the UV curable resin coated in the coating head. A resin curing furnace to be cured, and a tape core obtained by curing the coating resin in the resin curing furnace, and a linear velocity of the tape core.
A heating device for heating to a predetermined temperature according to the temperature, a take-up device for drawing the tape core heated by the heating device with a predetermined tension, and a winding device for winding the tape core drawn by the take-up device Immediately after manufacturing, the stress on the optical fiber due to the curing and shrinkage of the collective coating layer of the plurality of optical fibers is alleviated in a short time, and the adverse effect on the transmission characteristics due to the shrinkage strain is shortened in a short time. Can be eliminated.

A supply device for supplying a plurality of optical fiber wires, a coating head for coating a plurality of optical fiber wires supplied from the supply device with a UV curable resin, and curing the UV curable resin coated in the coating head. A resin curing furnace to be cured, and a tape core obtained by curing the coating resin in the resin curing furnace are bent in a predetermined direction at a predetermined curvature and uniformly stretched on both sides of the optical fiber tape core.
A force bending apparatus Ru giving beauty, constitutes a take-up device for taking up the ribbon applied bending at a predetermined tension in a forced bending apparatus, by a winding apparatus for winding a ribbon which was taken up with the take off device Therefore, immediately after manufacturing, the stress on the optical fiber due to the curing shrinkage of the collective coating layer of a plurality of optical fibers can be alleviated in a short time, and the adverse effect on the transmission characteristics due to the shrinkage strain can be eliminated in a short time. it can.

A supply device for supplying a plurality of optical fiber wires, a coating head for coating a plurality of optical fiber wires supplied from the supply device with a UV curable resin, and curing the UV curable resin coated on the coating head. A resin curing furnace to be cured, a take-up device for drawing a tape core obtained by curing the coating resin in the resin curing furnace with a predetermined tension, a winding device for winding the tape core wire drawn by the take-up device, and a winding device The optical fiber cable is bent at a predetermined curvature in a predetermined
Since the relative sides of the flop core are constituted by uniform elongation force bending apparatus Ru gives a short time the stress on the optical fiber due to the curing shrinkage of the collective coating layer of a plurality of optical fibers immediately after preparation And the adverse effect on the transmission characteristics due to the contraction strain can be eliminated in a short time.

The inside of the forcible bending device depends on the linear speed of the tape
And because you have to be heated to a predetermined temperature, to relax the stress in the optical fiber due to the curing shrinkage of the collective coating layer of a plurality of optical fibers immediately after preparation in a short time, on the transmission characteristics due to shrinkage strain The adverse effects can be eliminated in a short time.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of an optical fiber ribbon manufacturing method and an optical fiber ribbon manufacturing apparatus according to the present invention.

FIG. 2 is an overall configuration diagram showing another embodiment of a method for manufacturing an optical fiber ribbon according to the present invention and an apparatus for manufacturing an optical fiber ribbon.

FIG. 3 is an overall configuration diagram showing another embodiment of a method for manufacturing an optical fiber ribbon and an apparatus for manufacturing an optical fiber ribbon according to the present invention.

FIG. 4 is an overall configuration diagram showing a conventional optical fiber ribbon manufacturing apparatus.

FIG. 5 is a sectional view of the tape core wire shown in FIG. 4;

FIG. 6 is a diagram showing a time-dependent decrease in stress due to thermal shrinkage of an optical fiber ribbon manufactured by a conventional optical fiber ribbon manufacturing apparatus.

[Explanation of symbols]

1,20 ………………………………………………………………………………………………………………………………………………………………… Supply device 3,4… ……………………………………………………………………………………………………………………………………………………………………… Coating head 6,25 ……………… …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… Apparatus 9, 27 ………………………… Take-up apparatus 10, 28 …………………………………… Winding apparatus 29 ……………… …………………… Heating device

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-154828 (JP, A) JP-A-60-154831 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G02B 6/44 391

Claims (7)

(57) [Claims] 1. A method for manufacturing an optical fiber ribbon, in which a plurality of optical fiber strands are arranged in parallel and resin-coated and cured, wherein the plurality of optical fiber strands are resin-coated and cured. A method for producing an optical fiber ribbon, wherein the temperature is increased to a predetermined temperature according to the linear velocity . 2. A method for manufacturing an optical fiber ribbon, in which a plurality of optical fiber strands are arranged in parallel, resin-coated and cured, and the plurality of optical fiber strands are resin-coated and cured. After that, it is bent in a predetermined direction at a predetermined curvature, and is uniformly applied to both sides of the optical fiber ribbon.
The method of manufacturing an optical fiber ribbon, characterized in that the so that given elongation. 3. A method of manufacturing an optical fiber ribbon in which a plurality of optical fiber strands are arranged in parallel and resin-coated and cured, wherein a plurality of optical fiber strands are resin-coated and cured. Thereafter, the fiber is bent in a predetermined direction at a predetermined curvature while being heated to a predetermined temperature according to the linear velocity so as to give uniform elongation to both sides of the optical fiber ribbon. Of manufacturing optical fiber ribbon. 4. A supply device for supplying a plurality of optical fiber wires, a coating head for coating a plurality of optical fiber wires supplied from the supply device with a UV curing resin, and a UV coated on the coating head.
And a resin curing oven for curing the curable resin, the line of the ribbon is cured coating resin in the resin curing oven said ribbon
A heating device for heating to a predetermined temperature according to the speed, a take-up device for drawing the tape core heated by the heating device with a predetermined tension, and a winding device for winding the tape core taken by the take-up device An apparatus for manufacturing an optical fiber ribbon, comprising: an apparatus; 5. A supply device for supplying a plurality of optical fiber wires, a coating head for coating a plurality of optical fiber wires supplied from the supply device with a UV curable resin, and a UV coated on the coating head.
A resin curing furnace for curing the cured resin, and a tape core obtained by curing the coating resin in the resin curing furnace is bent in a predetermined direction at a predetermined curvature to be uniform on both sides of the optical fiber tape core.
Constitute a force bending apparatus Ru given elongation, the take-up device for taking up the ribbon applied bending at a predetermined tension in a forced bending apparatus, by a winding apparatus for winding a ribbon which was taken up with the take off device Optical fiber ribbon manufacturing equipment. 6. A supply device for supplying a plurality of optical fiber wires, a coating head for coating a plurality of optical fiber wires supplied from the supply device with a UV curable resin, and a UV coated on the coating head.
A resin curing furnace for curing the cured resin, a take-up device for drawing the tape core wire obtained by curing the coating resin in the resin curing furnace with a predetermined tension, and a winding device for winding the tape core wire taken up by the take-up device. The optical fiber cable is bent at a predetermined curvature in a predetermined direction with the tape core wound by the winding device.
-Loop core wire manufacturing apparatus of an optical fiber ribbon comprising constituted by uniform elongation force bending apparatus Ru gave against both sides of the. 7. The forcible bending device includes a tape inside the device.
The apparatus for manufacturing an optical fiber ribbon according to claim 5 or 6, wherein the apparatus can be heated to a predetermined temperature according to the wire speed of the core.