JP3387015B2 - Multi-core tape fiber single core separation tool - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core tape fiber single-core separation tool for separating a multi-core tape fiber into a single core and removing a tape coating layer remaining around the fiber core wire after the separation. is there.

[0002]

2. Description of the Related Art Usually, a multi-core tape fiber such as a 4-core tape fiber is laid in a cable state, and at the connecting portion, a part of the core wire is separated into a single core to remove the tape coating layer. It has become.

Conventionally, an operator manually carries out the single core separation of a multi-core tape fiber and the tape coating layer removal work,
It was done using a separation tool.

In the case where an operator manually performs the operation, the end of the multi-fiber tape fiber is loosened by fingers while peeling a few centimeters for each single fiber and tearing one fiber in the longitudinal direction. Then, the tape coating layer was removed one by one with a finger or a nail.

When the separating tool is used, the multi-core tape fiber is accommodated in the fiber accommodating groove of the separating tool, and is clamped by the pressing member from above, and slightly separated from the fiber accommodating groove and the pressing member in the fiber thickness direction. With the protruding blade, not only the single core was separated but also the tape coating layer was scraped off and removed.

[0006]

However, there are the following problems in the above-mentioned single core separation and tape coating layer removing operations.

[0007] When the worker performs the work manually, the multi-core tape fiber is separated from the end by a single finger, and the tape coating layer remaining on each core wire is removed by the hand. It took effort. Also, since the circumference of the core wire is collectively covered with a strong tape coating layer,
In some cases, the coating could not be removed.

In the above separating tool, depending on how the pressing member is pushed, the blade may enter the colored layer, which is the fiber coating layer of the core wire, and damage the core wire. Also, since this separation tool is also applied only to terminal separation,
Single-core separation and tape coating removal was not possible at any point in the middle of the multi-core tape fiber.

Therefore, the present invention has been devised to solve the above problems, and an object thereof is to easily and surely separate and coat a single fiber at an arbitrary point of a multi-fiber tape fiber in a short time. An object of the present invention is to provide a multi-core tape fiber single-core separation tool capable of removing layers.

[0010]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a multicore fiber for separating a multicore tape fiber into a single core and removing a tape coating layer remaining around the fiber core wire after the separation. A tape fiber single-core separating tool, which comprises an upper blade and a lower blade for sandwiching the multi-core tape fiber from above and below, and a ridge portion and a notch for separating the fiber core wire from the upper blade and the lower blade. A single-core separator formed vertically so that the grooves fit in a staggered manner, and a multi-core tape fiber separated by this single-core separator are curved and sandwiched, and slide in the width direction of the tape fiber. And a coating layer remover for removing the tape coating layer.

According to the above construction, after the multi-core tape fiber is separated into single cores by the single-core separator, the separated multi-core tape fibers are curved and sandwiched by the covering layer remover and slid in the width direction thereof. By doing so, tensile stress, compressive stress and frictional force are applied around the fiber core wire, and the tape coating layer is easily and surely removed in a short time.

An upper base and a lower base are foldably provided by a hinge or the like, the lower blade is provided on the lower base, and the upper blade is provided on the upper base to form a single-core separator.
A coating layer remover is formed by forming a concave surface on the lower base and providing a convex surface on the upper base that engages with the concave surface and holds the separated multi-core tape fiber and slides it in the width direction. desirable.

Further, it is preferable that the upper blade and the lower blade are formed in an arc shape facing each other.

Further, the radius of curvature of the concave surface and the convex surface is
It is desirable that it is in the range of 30 mm to 100 mm.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment for carrying out the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a multi-core tape fiber single-core separation tool according to the present invention, FIG. 2 is a sectional view of the multi-core tape fiber, and FIG. 3 is a multi-core tape fiber according to the present invention. It is the perspective view which showed the use condition of the single-core separation tool.

A four-core tape fiber will be described as an example of the multi-core tape fiber. As shown in FIG. 2, the 4-fiber tape fiber 1 has an optical fiber 2 inside.
Four core wires 4 each of which is composed of a fiber coating layer 3 and a fiber coating layer 3 which surrounds the same are arranged side by side, and the periphery thereof is covered with a tape coating layer 5.

Next, the structure of the multi-core tape fiber single core separation tool will be described.

As shown in FIG. 1, the multi-fiber tape fiber single-core separation tool 6 has an upper base 8 and a lower base 9 which are foldably provided by a hinge 7 or the like.

A housing groove 14 for housing the four-core tape fiber 1 is formed in the lower base 9. On the other hand, the upper base 8
At the time of folding, the holding member 15 is fitted in the housing groove 14 and holds the housed four-core tape fiber 1 from above.
Are provided along the accommodation groove 14.

When the upper base 8 is folded, it is 4
An upper blade 11 that presses the core tape fiber 1 from above is provided, and a lower blade 9 that supports the multi-core tape fiber 1 below the upper blade 11 is provided on the lower base 9. The upper blade 11 and the lower blade 12 constitute a single-core separator 21 for separating the 4-fiber tape fiber 1 into single fibers.

More specifically, the upper blade 11 is formed on a cylindrical body 16 provided on the upper base 8. The columnar body 16 is arranged substantially laterally in the longitudinal direction of the pressing member 15 so that its axis is orthogonal to the pressing member 15, and the side surface 20 thereof is provided.
Is partially embedded in the upper base 8 so as to project between the pressing members 15 in a circular arc cross section.

The lower blade 12 is formed on a cylindrical body 17 provided on the lower base 9. The columnar body 17 is arranged in a lateral direction so that its axis is orthogonal to the accommodation groove 14 at a substantially middle portion in the longitudinal direction of the accommodation groove 14, and a part of a side surface 20 thereof protrudes between the accommodation grooves 14 in an arc-shaped cross section. It is embedded in the lower base 9 so that

As shown in FIG. 4, the lower blade 12 is formed with a ridge portion 18 and a notch groove portion 19 so that the step corresponds to the boundary position of the core wire 4 of the four-core tape fiber 1. ing. Specifically, from the left side in the figure, the ridge 1 for the most core wire
8 is formed, and a notch groove portion 19 for the second core wire is formed on the right side thereof.
Is formed, a ridge portion 18 for the third core wire is formed on the right side thereof, and a notch groove portion 19 for the fourth core wire is further formed on the right side thereof.

Above the ridges 18 and the cutout groove portions 19, the tape fiber accommodating groove 2 having a depth of 0.4 mm and a width of 1.16 mm, which is approximately the same size as the four-core tape fiber 1, is formed.
2 are formed along the side surface 20 of the cylindrical body 17.

The ridge portion 18 and the notched groove portion 19 are also provided.
Is the width of 0.33 mm
The cutout groove portion 19 for the second core wire has a width of 0.25 mm and the depth from the bottom of the tape fiber housing groove 22 is 0.7 mm.
Then, the ridge portion 18 for the third core wire has a width of 0.25 mm, and the notch groove portion 19 for the fourth core wire has a width of 0.33 mm and a depth of 0.7.
mm.

The upper blade 11 is also formed with a ridge portion 18 and a notched groove portion 19 so that the step corresponds to the boundary position of the core wire 4 of the four-core tape fiber 1. In particular,
From the left side in the figure, a notch groove portion 19 for the most center wire is opened on the left side, a ridge portion 18 for the second core wire is formed on the right side, and a notch for the third core wire is formed on the right side. A notched groove portion 19 is formed, and a ridge portion 18 for the fourth core wire is further formed on the right side thereof.

These ridges 18 and notch grooves 19 are provided.
The width of the ridge portion 18 for the second core wire is 0.2 mm and the length is 0.7 mm, and the notch groove portion 19 for the third core wire has a width of 0.
29 mm, depth 0.7 mm, ridge 18 for 4th core wire
Has a width of 0.3 mm and a length of 0.7 mm. The ridge 18 for the second core wire is located at the center in the width direction of the notch groove portion 19 for the second core wire, and the ridge portion 18 for the fourth core wire is notched groove portion 19 for the fourth core wire. Are arranged so as to be fitted to the respective centers in the width direction.

The ridge portion 18 and the notch groove portion 19 are
Portion of the cylindrical body 16 protruding from the upper base 8 and the cylindrical body 17
And a portion protruding from the lower base 9 are each formed in an arc shape.

That is, the 4-core tape fiber 1 is attached to the upper blade 1
As shown in FIG. 5, the tape coating layer 5 is sheared from above and below in the thickness direction by sandwiching it between the core wire 1 and the lower blade 12 to separate the adjacent core wires 4 into single cores. There is.

The upper blade 11 and the lower blade 12 are formed with a guide convex portion 23 for guiding the mutual fitting position and a guide concave portion 24 with which the guide convex portion 23 is fitted.

As shown in FIG. 1, the single-core separator 21 described above is used.
The four-core tape fiber 1 separated by the single-core separator 21 is curved and sandwiched on the side of the core, and is slid in the width direction of the four-core tape fiber 1 and left around the core wire 4. A coating layer remover 25 for removing the tape coating layer 5 is provided.

The covering layer remover 25 sandwiches the concave surface 26 formed on the lower base 9 and the four-core tape fiber 1 which is provided on the upper base 8 and which is engaged with and separated from the concave surface 26 in the width direction thereof. The convex surface 27 is made to slide.

The concave surface 26 is formed on the upper surface of the lower base 9 substantially at the center of the four-core tape fiber 1 in the longitudinal direction, leaving the flat tape fiber fixing portions 28 on both front and rear sides. A rubber plate 29 is attached. The surface of the concave surface 26 is curved along the longitudinal direction of the 4-fiber tape fiber 1, and the radius of curvature thereof is 30 m.
It is within the range of m to 100 mm.

The convex surface 27 has a radius of curvature equivalent to that of the concave surface 26 and is formed on the lower surface of the moving body 31 provided on the lower surface of the upper base 8, and the rubber plate 2 is formed on the surface thereof.
9 is attached. The moving body 31 is formed in a semi-cylindrical shape whose cross section is a straight line on the upper base 8 side and a circular arc on the lower base 9 side, and its width is smaller than the width of the concave surface 26. A long hole (not shown) that is long in the width direction of the convex surface 27 is formed in the upper base 8, and a rod body (not shown) extending from the moving body 31 is inserted into this long hole, and an end portion thereof is formed. A grip portion 32 (see FIG. 3) is formed on the grip. By moving the grip portion 32 during folding, the moving body 31 moves in the direction of the arrow in the figure and slides the convex surface 27. There is.

Next, the operation of the multi-fiber tape fiber single-fiber separating tool having the above-mentioned structure will be described in accordance with its operating procedure.

First, the 4-core tape fiber 1 is attached to the lower base 9
It is accommodated in the accommodation groove 14 of. At this time, the 4-fiber tape fiber 1 is housed in the tape fiber housing groove 22 of the lower blade 12. Then, the upper base 8 is folded from above and the 4-fiber tape fiber 1 is sandwiched between the upper blade 11 and the lower blade 12. As a result, the ridge portion 18 of the upper blade 11 cuts the second core wire and the fourth core wire of the lower blade 12 from the upper portion of the portion of the four-core tape fiber 1 accommodated in the tape fiber accommodation groove 22. It fits so that it may be pushed into the notch groove portion 19. At this time, the first core wire and the third core wire are left on the protruding portion 18 of the lower blade 12, and the respective core wires 4 are separated from each other.

Here, since the upper blade 11 and the lower blade 12 are formed in an arc shape on the side surfaces 20 of the cylindrical bodies 16 and 17, respectively, the ridges are gradually projected from above and below an arbitrary point of the four-core tape fiber 1. Since the upper end portion of the portion 18 comes into contact with and presses, not only the end of the four-core tape fiber 1 but also the intermediate branch portion can be easily and surely separated into single fibers.

Then, with the upper base 8 still folded, the four-core tape fiber 1 is pulled and moved in the longitudinal direction to separate the four-core tape fiber 1 by a predetermined length. At this time, since the upper blade 11 and the lower blade 12 are formed in an arcuate shape on the side surfaces 20 of the cylindrical bodies 16 and 17, respectively, the core wires 4 are gradually torn, and a simple single core can be obtained in a short time. Separation is possible.

Next, the upper base 8 is opened upward, and the portion of the 4-fiber tape fiber 1 separated from the single core is moved to the concave surface 26. Then, fold the upper base 8 again and
The core tape fiber 1 is sandwiched between the tape fiber fixing portion 28 and the concave surface 26 and the convex surface 27. Then, the grip portion 32 is moved in the width direction of the four-core tape fiber 1, and the separated four-core tape fiber 1 is slid in the width direction.

At this time, the four-core tape fiber 1 between the concave surface 26 and the convex surface 27 is curved with an appropriate radius of curvature,
A tensile stress is applied to the lower side and a compressive stress is applied to the upper side. By rotating the curved four-core tape fiber 1 by the rubber plate 29 in the width direction, tensile stress and compressive stress are alternately applied to the tape coating layer 5 remaining around the core wire 4, and the tape The coating layer 5 is easily peeled off. Then, since a frictional force with the rubber plate 29 is applied thereto, the tape coating layer 5 can be easily and surely attached to the core wire 4.
It can be peeled off and removed.

Further, since the rubber plate 29 functions as a cushioning material, the core wire 4 is not damaged.

Further, the multi-core tape fiber single core separation tool 6 of the present invention has a relatively simple structure, and the tool can be downsized.
The weight can be reduced and workability can be improved.

In the above embodiment, an example in which the core wires 4 of the four-core tape fiber 1 are separated into single cores has been described, but the multi-core tape fiber single core separation tool 6 is described.
Is not limited to 4 cores, but 2 cores, 3 cores or more cores can be used.

Further, the upper blade 11 and the lower blade 12 may be shaped as shown in FIG.

In the lower blade 12 shown in FIG. 6, a cutout groove portion 19 for the most core wire is formed from the left side in the drawing, and a ridge portion 18 for the second and third core wires is formed on the right side thereof. A cutout groove portion 19 for the fourth core wire is formed on the right side thereof.

As shown in FIG.
0.4m depth, which is almost the same size as the core tape fiber 1
A tape fiber accommodating groove 22 having a width of m and a width of 1.16 mm is formed along the side surface 20 of the cylindrical body 17.

The ridges 18 and the cutout groove portions 19 have a width of 0.33 mm in the cutout groove portion 19 for the most core wire and a depth of 0.7 mm from the bottom of the tape fiber receiving groove 22.
And the ridges 18 for the second and third core wires have a width of 0.5 mm
The notch groove portion 19 for the fourth core wire has a width of 0.33 mm and a depth of 0.7 mm.

The upper blade 11 is formed with a ridge portion 18 for the most core wire from the left side in the drawing, a notch groove portion 19 for the second and third core wires on the right side thereof, and further on the right side thereof. A ridge portion 18 for the fourth core wire is formed on the.

These ridges 18 and notch grooves 19 are provided.
The dimension of is that the ridge portion 18 for the first core wire has a width of 0.3 mm and a length of 0.7 mm, and the cutout groove portion 19 for the second and third core wires is
Has a width of 0.53 mm and a depth of 0.7 mm, and the ridge portion 18 for the fourth core wire has a width of 0.3 mm and a length of 0.7 mm. The ridge 18 for the most core wire is at the center in the width direction of the cutout groove portion 19 for the most core wire, and the ridged portion 18 for the fourth core wire is the width of the cutout groove portion 19 for the fourth core wire. It is arranged so as to be fitted in the center of the direction.

According to the above configuration, it is possible to separate adjacent core wires 4 while connecting them, instead of forming all the core wires 4 as a single core.

In the above embodiment, the upper blade 11 and the lower blade 12 are formed on a part of the side surface 20 of the cylindrical bodies 16 and 17, but the cylindrical bodies 16 and 17 are rotatable. The upper blade 11 is provided over the entire circumference of the side surface 20 thereof.
Alternatively, the lower blade 12 may be formed.

[0053]

In summary, according to the present invention, the excellent effect that the single fiber separation and the tape coating layer removal can be easily and reliably performed at any point of the multi-core tape fiber is exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a multi-core tape fiber single core separation tool according to the present invention.

FIG. 2 is a cross-sectional view of a multi-core tape fiber.

FIG. 3 is a perspective view showing a usage state of the multi-core tape fiber single-core separation tool according to the present invention.

FIG. 4 is a cross-sectional view showing an upper blade and a lower blade.

FIG. 5 is a cross-sectional view showing a fitted state of an upper blade and a lower blade.

FIG. 6 is a cross-sectional view showing another embodiment of the upper blade and the lower blade.

[Explanation of symbols] 1 4-core tape fiber (multi-core tape fiber) 4 cores 5 Tape coating layer 6 Multi-core tape fiber single-core separation tool 7 Hinge 8 upper base 9 Lower base 11 Upper blade 12 Lower blade 18 ridge 19 Notch groove 21 Single-core separator 25 Coating layer remover 26 concave 27 convex

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinobu Kurosawa 5-1-1, Hidaka-cho, Hitachi, Ibaraki Pref., Opto System Research Laboratory, Nitrate Cable Co., Ltd. 5-1-1, Machi Nitrate Cable Co., Ltd., Optro System Research Center (72) Inventor Hideyuki Iwata 3-19-2, Nishi-Shinjuku, Shinjuku-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Hiroyuki Tanase 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nihon Telegraph and Telephone Corporation (56) Reference JP-A-6-347646 (JP, A) JP-A-3-213804 (JP, A) JP-A-7 -306320 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G02B 6/00 G02B 6/24

Claims (4)

(57) [Claims] 1. A multi-core tape fiber single-core separation tool for separating a multi-core tape fiber into a single core and removing a tape coating layer remaining around the fiber core wire after the separation. It consists of an upper blade and a lower blade that sandwiches the upper and lower sides, and the upper blade and the lower blade are formed so that the ridge portion and the notch groove portion are alternately fitted to separate the fiber core wire. A single-core separator and a coating layer remover that bends and holds the multi-core tape fiber separated by the single-core separator and slides in the width direction of the tape fiber to remove the tape coating layer A multi-core tape fiber single-core separation tool characterized by 2. An upper base and a lower base are foldably provided by a hinge or the like, the lower blade is provided on the lower base, and the upper blade is provided on the upper base to form a single-core separator. 2. The coating layer remover is formed by forming a concave surface and providing a convex surface on the upper base, which is engaged with the concave surface and which holds the separated multi-core tape fiber and slides it in the width direction thereof. Multi-core tape fiber single-core separation tool. 3. The multi-fiber tape fiber single-core separation tool according to claim 1, wherein the upper blade and the lower blade are formed in an arc shape facing each other. 4. The radius of curvature of the concave surface and the convex surface is 30 m.
The multi-core tape fiber single-core separation tool according to claim 2 or 3, which is in the range of m to 100 mm.