JPH025006A - Coat stripper for coated optical fiber - Google Patents

Abstract

PURPOSE:To prevent the disconnection of a coated optical fiber in the case of removing the coat of said optical fiber by providing a bend preventing body having a guiding hole whose inside diameter is larger than the outside diameter of said optical fiber on a pinching mechanism and making a round hole and the guiding hole opposed to each other. CONSTITUTION:The coated optical fiber is inserted into the guiding hole 8, whose inside diameter is larger than the outside diameter of the optical fiber, of the bend preventing body 3 and the cut spot of the optical fiber is fitted on the notch 2a of a cutting blade 2. Then, the cutting blades 1 and 2 are made to butt by grapsing plate substances 4 and 5 and the optical fiber is pinched. At such a time, the cutting blades 1 and 2 cut into the coat of the optical fiber and a break is made to occur but the optical fiber does not bend because the leading edge part of the optical fiber is inserted into the guiding hole 8. Finally, the stripper for the optical fiber is pulled to the side of the leading edge part of the optical fiber. Thus, the bend does not occur on the optical fiber with the work of the bend preventing body 3 and the coat thereof can be smoothly removed, then the disconnection of the optical fiber can be prevented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a coating stripper for coated optical fiber.

[Conventional technology]

Conventional optical fiber coating strippers have a pair of blades for cutting the coating. Then, the blade is moved toward the end while remaining embedded in the coating to remove the coating.

[Problem to be solved by the invention]

When removing the coating from an optical fiber using the conventional optical fiber coating stripper mentioned above, the optical fiber may be bent with the surface of high friction inward due to uneven friction between the coating and the surface of the cladding. many. If this bending occurs, it becomes difficult to remove the coating, and if the coating is forcibly removed, there is a problem that the optical fiber core wire will break.

[Failure to solve the problem]

Means provided by the present invention to solve the above problems are as follows:
A semi-scissor comprising a pair of cutting blades that make cuts in the coating of the optical fiber core wire, and a scissor mechanism that butts and separates the two cutting blades facing each other, and forms a circular hole when the two cutting blades butt each other. In the optical fiber coated stripper, a circular notch is provided at each of the cutting edges of the cutting blades, and the diameter of the circular hole is slightly larger than the outer diameter of the cladding of the optical fiber coated wire. The scissors mechanism is provided with a bend preventing body having a guide hole having an inner diameter slightly larger than the outer diameter of the optical fiber, and the circular hole and the guide hole are opposed to each other.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows an example of an optical fiber coating according to an embodiment of the present invention.
It is a perspective view showing an IJ collar.

In the figure, 1 and 2 are cutting blades, la and 2a are notches, 3 is a bending prevention body, 4 and 5 are plate bodies, 6 is a shaft, 7 is a coiled spring, and 8 is a guide hole.

The scissor mechanism has two plates 4 and 5 facing each other,
One end of each plate 4, 5 is pivoted.

A coil spring 7 is wound around the shaft 6, and the plate 4 is closed when not in use.
, 5 are kept separated for a certain period of time.

The cutting blades 1 and 2 are fixed to the valley facing surfaces of both plate bodies 4 and 5, respectively. Each cutting blade 1, 2 faces each other. There are still semicircular notches 1a on the cutting edge of each cutting blade 1 and 2.
2a are provided respectively.

Therefore, when the scissors mechanism is gripped and the two cutting blades 1 and 2 are butted against each other, a circular hole is created. The cutouts 1a+2a support the optical fiber core and make cuts in its coating. The diameter of the circular hole is slightly larger than the outer diameter of the cladding of the optical fiber.

The bending prevention body 3 has a guide hole 8 in a column having a semi-elliptical cross section.
will be established. This bending prevention body 3 is fixed to the opposing surface of one plate body 5. The central axis of the guide hole 8 is straight. The guide hole 8 and the circular hole formed when the cutting blade 1.2 butts together face each other. Further, the inner diameter of the guide hole 8 is larger than the outer diameter of the optical fiber core. In the case of this example, it was set to 1.1 (mi) or more and 3.0 (mm) or less. Furthermore, the length of the bending prevention body 3 was set longer than the length of the coating to be removed.

To use the coated optical fiber stripper of this embodiment, insert the coated optical fiber into the guide hole 8 of the bend prevention body 3, and cut the part of the coated optical fiber at the notch 2a of the cutting blade 2. Match. Next, hold the plates 4 and 5 and cut the cutting blade 1.
, 2 and sandwich the optical fiber. At this time, the cutting blades 1 and 2 bite into the coating of the optical fiber and make a cut, but since the tip of the optical fiber is inserted into the guide hole 8, the optical fiber will not bend. . Finally, the optical fiber stripper is pulled toward the tip of the optical fiber.

As a result, only the coating of the optical fiber can be removed.

According to the optical fiber coated stripper of this embodiment, the optical fiber coated wire does not bend due to the function of the bend prevention body 3, and the coating can be removed smoothly, thereby preventing breakage of the optical fiber coated wire. be able to.

FIG. 2 is a perspective view showing an optical fiber coated stripper according to another embodiment of the present invention.

In the embodiment shown in FIG. 1, a scissor mechanism similar to a stapler is employed, and a special bending prevention body 3 is fixed along the longitudinal direction of one plate 5, but instead of this, As shown in FIG. 2, ordinary scissors for removing coatings are used as the scissor mechanism, and a cylinder is used as the bending prevention body 13, and the bending prevention body 13 is oriented perpendicularly to the longitudinal direction of the cutting blade 12. The same effect as in the embodiment shown in FIG. 1 can be obtained even if it is provided along the same direction.

[Effect of uniform mouth]

As explained above, according to the optical fiber coated stripper of the present invention, only the coating can be easily removed without bending the optical fiber coated wire. Breakage of the core wire can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an optical fiber coating stripper according to one embodiment of the present invention, and FIG. 2 is a perspective view showing an optical fiber coating stripper according to another embodiment of the present invention. 1.2.12... Cutting blade, la, 2a.
...notch, 3,13...bending prevention body,
4, 5...Plate body, 6...Shaft, 7...
...Wrong spring, 8...Guide hole. Agent Patent Attorney Shinsuke Honjo

Claims (1)

[Claims] A semi-scissor comprising a pair of cutting blades that make cuts in the coating of the optical fiber core wire, and a scissor mechanism that butts and separates the two cutting blades facing each other, and forms a circular hole when the two cutting blades butt each other. In the optical fiber coated stripper, a circular notch is provided at each of the cutting edges of the cutting blades, and the diameter of the circular hole is slightly larger than the outer diameter of the cladding of the optical fiber coated wire. The scissors mechanism is provided with a bend preventing body having a guide hole having an inner diameter slightly larger than the outer diameter of the optical fiber core, and the circular hole and the guide hole are opposed to each other. Fiber coated stripper.