JPH08286045A - Tape material separating method for tape-shaped coated optical fiber - Google Patents

Abstract

PURPOSE: To provide the tape material separating method of a tape-shaped coated optical fiber capable of effectively removing an outside coating. CONSTITUTION: Scratches are made on the surface side and the rear side of a tape-shaped coated optical fiber 1 by blades 4a, 4b arranged in the upward and the downward of the fiber wire 1(A). Next, adhesive tapes 5a, 5b are adhered on the both sides of the fiber wire 1 by tacky powers of tapes while pressing the tapes against the both sides (B) and tape material is stripped off by tearing off tape material while clamping top ends of adhesive tapes 5a, 5b and by tearing the tape material in pieces of the tape material 3a of the surface side and the tape material 3b of the rear side and then the tape material and an optical fiber core wire 2 are separated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for separating a tape material of a tape-shaped optical fiber core wire.

[0002]

2. Description of the Related Art FIG. 8 is a sectional view of a conventional tape-shaped optical fiber core wire. In this example, a four-core tape-shaped optical fiber core wire is shown. In the figure, 1 is a tape-shaped optical fiber core wire,
Reference numeral 2a is an optical fiber element wire composed of a core and a clad, 2b is a protective coating, and 3 is a tape material. Four optical fiber core wires produced by applying the protective coating 2b on the optical fiber element wire 2a composed of a core and a clad are arranged in a plane and covered with a tape material 3 to be integrated into a flat shape. It was done.

In order to take out any optical fiber from the tape-shaped optical fiber, it is necessary to remove the tape material of the outer coating of the tape-shaped optical fiber. As a method for removing the tape material, JP-A-5-31
No. 3018, a method of removing the coating with a knife one by one, or, as shown in Japanese Patent Laid-Open No. 63-316804, a padding member is adhered or adhered to the surface portion from which the tape material is to be peeled off. A method has been proposed in which a wedge-shaped separating member is inserted between the patch member and the optical fiber core, and the separating member is moved forward to tear the coating.

However, since the former method uses the blade over the entire length, it causes anxiety to the worker, for example, during hot line, and has a drawback that only one side can be machined. Regarding the latter, there is a problem that the process is complicated, and the removal length of the tape material cannot be controlled only by the adhesive length of the patch member.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tape material separating method for a tape-shaped optical fiber core wire capable of efficiently removing an outer coating. It is intended to remove the coating without anxiety even when handling a live tape-shaped optical fiber core.

[0006]

According to a first aspect of the present invention, a tape-shaped optical fiber core wire is formed by arranging a plurality of optical fiber core wires and coating a tape material from the outside. In the tape material separating method of the tape-shaped optical fiber core wire for separating the tape material from the optical fiber core wire, the step of scratching a required position of the tape material, and the bonding force between the tape material and the optical fiber core wire A step of attaching a removing member having strong adhesive force or adhesive force to the tape material,
It is characterized by comprising a step of peeling off the tape material using the removing member.

According to a second aspect of the present invention, in the tape material separating method for the tape-shaped optical fiber according to the first aspect, the removing member is an adhesive tape.

According to a third aspect of the present invention, in the tape material separating method of the tape-shaped optical fiber according to the first or second aspect, the upper and lower surfaces of both ends of the portion where the tape material is to be removed are scratched. It is characterized by that.

[0009]

According to the present invention, after the desired position of the tape material of the tape-shaped optical fiber core is scratched, the removing member is attached to the tape material, and the tape material is peeled off, so that the tape material is exposed to light. It can be separated from the fiber core. The removal member is
Since it has a stronger adhesive force or adhesive force than the bonding force between the tape material and the optical fiber core wire, the tape material can be peeled off by the removing member.

By using an adhesive tape as the removing member, the removing member can be attached to the tape material in a short time. Further, by scratching the upper and lower surfaces of both ends of the portion where the tape material is to be removed, it becomes easy to separate the tape material at a desired portion.

[0011]

1 is an explanatory view of a first embodiment of a tape material separating method for a tape-shaped optical fiber core wire according to the present invention. In the figure, 1 is a tape-shaped optical fiber core wire, 2 is an optical fiber core wire, 3a and 3b are tape materials, 4a and 4b are blades, 5
a and 5b are adhesive tapes.

FIG. 1A shows a step of making a scratch. The upper and lower blades 4a and 4b scratch the front surface and the back surface of the tape-shaped optical fiber core 1 to the extent that they do not reach the optical fiber core. The scratching position is the starting point for separating the tape material.

FIG. 1B shows a step of attaching an adhesive tape. Adhesive tapes 5a and 5b are pressed against both surfaces and adhered to both surfaces of the tape-shaped optical fiber core wire 1 by an adhesive force. The adhesive force of the adhesive tapes 5 a and 5 b is stronger than the bonding force between the tape material and the optical fiber core wire 2. Of course, as will be described in the next step, since the tape material is torn and peeled off, the bonding force includes a force to tear the tape material. It is preferable that the adhesive tapes 5a and 5b be attached up to a position beyond the position of the scratch. The portion beyond the position of the scratch does not have to be adhered.

FIG. 1C shows the separation process. By gripping the tip ends of the adhesive tapes 5a and 5b and peeling off the tape material 3, the tape material is peeled off while tearing the tape material 3a on the front surface side and the tape material 3b on the back surface side, and the tape materials 3a and 3b The fiber core wire 2 can be separated.

FIG. 2 is an explanatory view of a second embodiment of the tape material separating method for the tape-shaped optical fiber core wire of the present invention. In the figure, the same parts as those in FIG. 6a and 6b are rotating rollers. In this embodiment, the scratching process is similar to that of the embodiment described with reference to FIG. However, the step of attaching the adhesive tape and the separating step are performed in parallel.

The adhesive tapes 5a and 5b are attached to the peripheral surfaces of rotating rollers 6a and 6b having the same diameter and rotating in synchronization with each other. It is preferable to attach the adhesive tape over the entire circumference, but it may be attached only to a part of the peripheral surface. The peripheral surfaces of the rotating rollers 6a and 6b may be adhesive surfaces. The two rotating rollers 6a and 6b are preferably supported so that the distance between them can be adjusted. In the vicinity of the damaged portion of the damaged tape-shaped optical fiber core wire 1, the tape material 3 is sandwiched between the rotating rollers 6a and 6b, and along the tape-shaped optical fiber core wire 1.
Rotate while moving a and 3b in the direction of peeling. By the rotation of the rotating rollers 6a and 6b, the tape material 3a,
3b is attached and peeled off so as to be wound around the adhesive tapes 5a and 5b, and is separated from the optical fiber core wire 2.

The rotating rollers 6a and 6b do not necessarily have the same diameter, and the outer diameters may be different as long as the rotating speeds are selected so that the peripheral speeds of the adhesive tapes 5a and 5b are almost the same. When one surface of the tape material is peeled off, the force of tearing the tape material on the other surface becomes unnecessary, and therefore the force of peeling off the other surface may be small. Therefore, by making the outer diameter of the rotating roller of the surface that requires the force of tearing the tape material smaller than that of the other rotating roller, the tearing can be facilitated. Further, instead of moving the rotating rollers 6a, 6b, the tape-shaped optical fiber core wire 1 may be moved.

FIG. 3 is an explanatory view of a third embodiment of the tape material separating method for the tape-shaped optical fiber core wire of the present invention. In the figure, the same parts as those in FIG. 7a and 7b are spring members. In this embodiment, the rotating rollers 6a and 6b in the second embodiment are supported by spring members 7a and 7b.
Prior to the separation step, the rotating rollers 6a and 6b release the spring members 7a and 7b so that at least the tape-shaped optical fiber cores can be inserted, or the axial intervals are forced. Supported to expand. In the separating step, after the tape-shaped optical fiber core wire is inserted between the rotating rollers 6a and 6b, the spring member 7
The tape-shaped optical fiber cores are sandwiched by a and 7b and pressed against each other. As described in the second embodiment, while rotating the rotary rollers 6a and 6b, the rotary rollers 6a and 6b are moved along the optical fiber ribbons so that the tape materials 3a and 3b can be wound around the adhesive tapes 5a and 5b. It is peeled off while being attached, and separated from the optical fiber core wire 2.

FIG. 4 is an explanatory view of a fourth embodiment of the tape material separating method for the tape-shaped optical fiber core wire of the present invention. In the figure, the same parts as those in FIG. 4 is a blade, 8 and 9 are clampers, and 10 is a base. As described in the second embodiment, the rotating rollers 6a and 6b are supported so as to move along the tape-shaped optical fiber core wire 1 while rotating, and an adhesive tape is attached to the peripheral surface thereof. Alternatively, the surface is made sticky by applying a sticky substance or the like. Blade 4
Is configured as a rotary blade in this embodiment and is set in the base, and scratches the tape material from the lower surface of the tape-shaped optical fiber core wire 1 with the rotary rollers 6a and 6b retracted. Can be attached. A rotary blade may be provided above the base to damage the tape material from both sides of the tape-shaped optical fiber core wire 1. As shown in the figure, when scratching from the lower surface, press the upper surface with an appropriate member to scratch one surface, then flip the tape-shaped optical fiber core wire 1 and scratch the other surface. Try to attach it.

Then, as described in the second and third embodiments, the tape-shaped optical fiber core wire 1 is sandwiched between the rotating rollers 6a and 6b with an appropriate interval between the rotating rollers 6a and 6b.
While rotating the rotating rollers 6a and 6b, the rotary rollers 6a and 6b are moved along the tape-shaped optical fiber core wire 1 to separate the tape material from the optical fiber core wire 2.

In this embodiment, since the tape-shaped optical fiber core wire 1 is kept clamped by the clampers 8 and 9 at least in the separation step, the influence on the optical fiber core wire during the work is small. Even in a live state, the tape material can be removed without causing power fluctuations on the optical fiber core wire during communication.

FIG. 5 is an illustration of an embodiment of the step of making a scratch. Reference numeral 1 is a tape-shaped optical fiber core wire, and 4a and 4b are blades. By the upper and lower blades 4a, 4b,
The tape material is scratched from both sides of the tape-shaped optical fiber core wire 1. The scratched positions are the starting point and the ending point for peeling the tape material. The upper and lower blades 4a and 4b are arranged one by one at intervals of a length L for removing the tape material. Therefore, the upper and lower surfaces of both ends of the portion where the tape material should be removed can be scratched at once. Of course, only one set of upper and lower blades 4a and 4b may be provided, and the tape-shaped optical fiber core wire and the blade may be moved relative to each other so that the start point and the end point are scratched from both sides.

FIG. 6 is an illustration of an example of how to make a scratch. In the figure, 1 is a tape-shaped optical fiber core wire, 11a, 11
b is a wound. The scratch may be a mere notch,
In this example, it has a V-shaped scratch. Figure 6
As shown in (A), the scratches on the upper and lower surfaces may be provided at substantially the same position, or as shown in FIG. 6 (B), the scratches may be provided on the upper and lower surfaces at slightly displaced positions. FIG. 6B is an example in which the upper surface is placed at the leading position on the assumption that peeling is performed in the right direction. In this case, if the separation is started first from the upper surface, the lower surface can be easily separated.

FIG. 7 shows another example of how to make a scratch. In the figure, the same parts as those in FIG. 6 are designated by the same reference numerals and the description thereof is omitted. In this example, the shape of the scratch at the starting point is devised. As shown in FIG. 6 (A) or (B), the scratch at the end point may have a V-shaped cross section or a simple notch on both the upper and lower surfaces. In FIG. 7 (A), a notch is formed substantially vertically, and then some notches are made along the longitudinal direction of the tape-shaped optical fiber core. FIG. 7 (B) is a view in which a notch is made obliquely and some notches are made from there along the longitudinal direction of the tape-shaped optical fiber core wire. Any of the scratches has some cuts along the longitudinal direction of the tape-shaped optical fiber core at the starting point of peeling, so that the tape material can be easily torn in the separating step.

In the above-described embodiment, the adhesive tape is used as the removing member and the adhesive force is used. However, the adhesive force may be used. In the first embodiment, since the tape-shaped removing member having the adhesive surface is adhered to the surface of the tape material, the removing member can be attached to the surface of the tape material prior to the separating step. Therefore, it may take a long time for sticking, and any adhesive that can bond the tape material can be used. When a rotating roller is used, an adhesive capable of adhering in a short time, for example, an instant adhesive type adhesive containing α-cyanoacrylate as a main component, or an adhesive agent applied to both sides of the adhesive surface It is possible to use a rubber-based or synthetic rubber-based adhesive that adheres by applying pressure after the post-solvent is dried.

[0026]

As is apparent from the above description, according to the present invention, the tape material can be easily removed and the tape material can be removed without power fluctuation even in a live state.

[Brief description of drawings]

FIG. 1 is an explanatory view of a first embodiment of a tape material separating method for a tape-shaped optical fiber core wire of the present invention.

FIG. 2 is an explanatory view of a second embodiment of a tape material separating method for a tape-shaped optical fiber core wire according to the present invention.

FIG. 3 is an explanatory view of a third embodiment of a tape material separating method for a tape-shaped optical fiber core wire of the present invention.

FIG. 4 is an explanatory diagram of a fourth embodiment of the tape material separating method for the tape-shaped optical fiber core wire of the present invention.

FIG. 5 is an explanatory diagram of an example of a step of making a scratch.

FIG. 6 is an explanatory diagram of an example of how to make a scratch.

FIG. 7 is another example of how to make a scratch.

FIG. 8 is a cross-sectional view of a conventional tape-shaped optical fiber core wire.

[Explanation of symbols]

1 ... Tape-shaped optical fiber core wire, 2 ... Optical fiber core wire, 3
a, 3b ... tape material, 4, 4a, 4b ... blade, 5
a, 5b ... Adhesive tape, 6a, 6b ... Rotating roller, 7
a, 7b ... Spring member, 8, 9 ... Clamper, 10 ...
Base, 11a, 11b ... scratches.

Claims (3)

[Claims] 1. After arranging a plurality of optical fiber core wires,
In a tape material separating method of a tape-shaped optical fiber core wire for separating a tape material of a tape-shaped optical fiber core wire formed by coating a tape material from the outside, a step of scratching a required position of the tape material And a step of attaching a removing member having an adhesive force or an adhesive force stronger than the bonding force between the tape material and the optical fiber core wire to the tape material, and a step of peeling the tape material using the removing member. A method for separating tape material from a tape-shaped optical fiber. 2. The tape material separating method for a tape-shaped optical fiber according to claim 1, wherein the removing member is an adhesive tape. 3. The tape material separating method for a tape-shaped optical fiber according to claim 1, wherein the upper and lower surfaces of both ends of the portion where the tape material is to be removed are scratched.