JP2004061807A - Method for separating single coated optical fiber from coated optical fiber tape, and jig therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a method for separating a single coated optical fiber from a coated optical fiber tape, which easily perform the work of separating single coated optical fibers from the coated optical fiber tape into individuals and prevent single coated optical fibers from being broken due to unreasonable operation, and to provide a jig therefor. <P>SOLUTION: A four-fiber coated optical fiber tape 5 having single coated optical fibers made into one tape with a collective coating 4 is subjected to both cutting separation processing of separating two inside single coated optical fibers being in the center part of the coated optical fiber tape from each other and shearing separation processing of separating single coated optical fibers on both sides into individuals while leaving two single coated optical fibers in the center part of the coated optical fiber tape as they are. and thus single coated optical fibers 3 are loosened into individuals. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a single-core-tape separating method for separating an optical fiber ribbon into a single core at a terminal of the tape core, and a jig used at that time.
[0002]
[Prior art]
In recent years, tape cores having a cross-sectional structure shown in FIG. 7B have been widely used as main members of optical cables.
In FIG. 7B, reference numeral 1 denotes a glass fiber, 2 denotes a single core coating, 3 denotes a single core wire, 4 denotes a collective coating, and 5 denotes a tape core wire.
The glass fiber 1 is mainly composed of glass such as quartz, and a single-core coating 2 made of an ultraviolet curable resin or the like is formed on the glass fiber 1 to form a single-core wire 3. Further, a plurality of single core wires 3 are arranged in parallel, and a collective coating 4 made of an ultraviolet curable resin or the like is provided on the outside so as to integrate them to form a tape core wire 5.
[0003]
There are various numbers of single cores constituting the tape core, such as four cores, eight cores, and twelve cores. For example, a tape core in which four single cores 3 are collectively covered is provided. In the case of No. 5, the thickness t in the cross section is about 0.4 mm or 0.3 mm, and the width w is about 1.1 mm. In general, the tape core is an extremely thin and thin tape-shaped object. Careful handling is required, such as avoiding bending with a radius of curvature of 30 mm or less, so as not to damage the single core wire or to deteriorate the transmission characteristics of the glass fiber.
[0004]
By the way, in order to make a branch connection at the end of the tape core wire or in the middle of the tape core wire untwisted with an SZ twisted cable in which the tape core wire is SZ twisted, the internal single core wire 3 is connected from the tape core wire. Before taking out and performing connection work such as optical connector attachment and single-core fusion, remove or cut off the blanket coating before the connection work to complete the single-core wire for optical connector attachment and single-core fusion. Must be separated from other single-core wires.
As a method of separating a single core from a tape core, a single core separation method shown in FIGS. 22 and 23 and a single core separation method shown in FIGS. 24 and 25 have been proposed.
[0005]
Hereinafter, each of these single-core separating methods will be described.
The single-core separating method shown in FIG. 22 and FIG. 23 is such that the tape core 5 covering four single-core wires 3 is sandwiched between a pair of upper and lower pressing dies 7, 8 shown in FIG. By pressing the two single wires 3 outside the core wire 5 and the two single wires 3 inside the core wires 5 in opposite directions, as shown in FIG. The collective covering 4 is sheared on both sides of the wire 3 to separate the two inner single wires and the respective single wires on both sides in the thickness direction of the tape core 5 as shown in FIG. After being formed into the above-described configuration, the tearing member 11 inserted into the gap 9 between the two inner single wires separated in the thickness direction of the tape core wire 5 and the respective single core wires on both sides thereof is attached to the tape core wire. 5, the two single wires 3 inside the tape core wire 5 and the single wires 3 outside the tape core wire 5 are separated over a predetermined length. It is an state.
[0006]
The single core wire separation method shown in FIG. 24 and FIG. 25 uses the single core wire 4 covering the four core wires 3 in a lump as shown in FIG. The pair of upper and lower cutting blades 13 and 14 applied to the position are relatively moved along the length direction of the tape core 5, so that the two single cores inside the tape core 5 are moved as shown in FIG. Are separated over a predetermined length.
[0007]
[Problems to be solved by the invention]
In any of the conventional single-core separating methods described above, none of the four single-core wires 3 constituting the tape core 5 can be separated into one.
In the case of the shearing separation shown in FIG. 22, the two single wires 3 at the center remain joined by the collective coating 4.
Further, in the case of the cutting separation shown in FIG. 24, the tape core 5 is simply divided into two parts on the left and right, and the two single cores 3 are joined on both the left and right sides.
[0008]
Therefore, in the conventional single-core wire separation method for the tape core, to obtain a state in which the four single-core wires 3 of the tape core 5 are separated into one, the two single cores 3 are joined. It is necessary to further separate the state of the state into single wires 3 one by one, and this work is performed manually by an operator using, for example, a general-purpose cutter knife. In addition, there is a possibility that an unreasonable force acts on the single core wire during the separating operation and breaks the single core wire.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to process a single core wire into a form in which a single core wire is separated from a tape core wire covering a plurality of single core wires at a time. It is an object of the present invention to provide a single-core wire separating method and a single-core separating jig for a tape core, which can improve workability of the tape core and can prevent breakage of the single core by an unreasonable operation.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a method for separating a single core fiber of a tape core according to the present invention comprises the steps of: A line separation method,
A cutting separation process of applying a cutting blade to the tape core wire to relatively move the tape core wire along the length direction of the tape core wire and a shear separation process of moving a tearing member along the length direction of the tape core wire are performed. It is characterized by doing.
[0011]
According to a second aspect of the present invention, in the method for separating a single core fiber of the tape core according to the first aspect, the cutting blade is configured to perform the cutting and separating process and apply the cutting edge to a center position of the tape core in the width direction. By a single core of the central portion of the tape core is separated over a predetermined length,
Performing the shear separation process, sandwiching the tape core wire between a pair of upper and lower pressing dies, pressing the central portion of the tape core wire and the single core wires on both sides thereof in opposite directions to each other to increase the thickness of the tape core wire. After being formed in a form separated in the vertical direction, the tape core is extended over a predetermined length by a tearing member inserted into a gap between the separated central part and the single core on both sides thereof. It is characterized in that it is separated from the core wire.
[0012]
The single-core separating method of the tape core configured as described above is a cutting and separating process for separating between the single cores at the center of the tape core, and the single core at the center of the tape core and both sides thereof. And a single-core wire at the center, which could not be separated alone in the conventional shear-separation process, can be separated into one single-core wire by a cut-and-separation process. In the case of the above-mentioned tape core wire, all of the single core wires can be separated into individual pieces one by one.
[0013]
Preferably, in the method according to claim 1 or 2, in the single-core separating method for a tape core according to claim 3, a cutting mechanism for performing the cutting / separating process and a shearing device for performing the shearing / separating process. A mechanism is sequentially arranged along the length direction of the tape core wire, and after the tape core wire is placed so as to straddle these cutting mechanism and shearing mechanism, separation processing by these cutting mechanism and shearing mechanism is performed. At about the same time, at this time, the cutting mechanism and the shearing mechanism and the tape core wire are relatively displaced so that the tape core wire is sent from the cutting mechanism side toward the shearing mechanism side. It is preferable that the processing and the shear separation processing are performed simultaneously.
[0014]
At the time of the shearing separation process, it is necessary to accurately position the entire width of the tape core wire. If the cutting and separating process is performed first and the tape core wire is divided into two, accurate positioning becomes difficult, and the shearing position is not determined. There is a possibility that the single core wire may be damaged due to misalignment or the like.
However, in the single-core separating method for a tape core configured as described above, the cutting mechanism for performing the cutting / separating process and the shearing mechanism for performing the shearing / separating process are arranged in the longitudinal direction of the single core to be separated. Are arranged in order, for example, in a case where the single-core wire constituting the tape core wire is separated by untwisting the SZ cable in which the tape core wire is SZ-wound, the twist is released. If the tape core wire is placed so as to straddle each of the cutting mechanism and the shearing mechanism, each mechanism can perform accurate positioning at the position where the separation processing on the tape core wire has not been processed, and the shear position Breakage of the single core wire due to misalignment or the like can be prevented.
Also, by starting the processing by each mechanism at the same time, the separation processing by both mechanisms can be executed efficiently.
[0015]
According to another aspect of the present invention, a jig for separating a single core fiber from a core fiber of an optical fiber tape is provided. A single wire separation jig,
A pair of upper and lower levers that sandwich the tape core wire from the side by a gripping operation, and are mounted on the upper and lower pair of levers, and a cutting blade is applied to the tape core wire to move the tape core wire along the length direction of the tape core wire. It is characterized by comprising a cutting mechanism for moving and a shearing mechanism for moving the tearing member along the length direction of the tape core wire.
[0016]
According to a fifth aspect of the present invention, in the single-core separating jig for a tape core according to the fourth aspect, the cutting mechanism is configured such that when the pair of upper and lower levers sandwich the tape core, the tape core is separated. The cutting blade, which divides a single core wire at a central portion of the tape core wire by hitting a center position in a width direction of the line,
The shearing mechanism presses the central portion of the tape core wire and the single core wires on both sides thereof in opposite directions when the pair of upper and lower levers sandwich the tape core wire in the thickness direction of the tape core wire. A pair of upper and lower press dies to be separated into a separated form, and the tape core is provided so as to be able to be inserted and removed in a gap between a central part separated in the thickness direction of the tape core and a single core on both sides thereof. The tearing member is provided so as to be separated into a central portion and single wires on both sides thereof over a predetermined length.
[0017]
In the single-core separating jig of the tape core thus configured, a cutting mechanism and a shearing mechanism are provided on a pair of upper and lower levers sandwiching the tape core, and the tape core is inserted between the pair of levers. By simply moving the sandwiched single-core separating jig and the tape core relative to each other along the longitudinal direction of the tape core, one single core can be separated from the tape core. In the case of a wire, all of the single-core wires can be separated into individual wires one by one.
[0018]
Preferably, as described in claim 6, in the single-core separating jig of the tape core according to claim 4 or 5, in the longitudinal direction of the tape core passing through the pair of upper and lower levers. The cutting mechanism and the shearing mechanism are sequentially arranged along, and when the pair of upper and lower levers and the tape core are relatively moved, the tape core is directed from the cutting mechanism side to the shearing mechanism side. It is good to adopt a configuration in which
[0019]
In the single-core separating jig of the tape core configured as described above, the cutting mechanism for performing the cutting / separating process and the shearing mechanism for performing the shearing / separating process are arranged along the length direction of the single-core wire to be subjected to the separating process. The single-core separating jig sandwiching the tape core wire between a pair of levers and the tape core wire are relatively moved along the longitudinal direction of the tape core wire, and are arranged in series with each other. A single-core separation method of the tape core can be realized, and a single relative movement operation, for example, separates all four single cores constituting the tape core one by one. And the required work time for single-core separation can be greatly reduced.
[0020]
According to a seventh aspect of the present invention, in the single-core separating jig for the tape core according to the fourth or fifth aspect, the tape core is shifted in a width direction of the tape core inserted between the pair of upper and lower levers. The shearing mechanism and the cutting mechanism may be arranged in parallel and integrally provided on the pair of upper and lower levers.
[0021]
In the single-core separating jig of the tape core configured as described above, the cutting mechanism and the shearing mechanism are arranged in parallel and integrated, so that they can be used properly according to the cutting or shearing processing to be performed. it can. In addition, since they are integrated, it is easier to carry a portable device than conventional jigs.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a single-core separating method and a single-core separating jig of a tape core according to the present invention will be described below in detail with reference to the accompanying drawings. In each of the following embodiments, a description will be given of a method of separating a single core fiber of a tape core and a case where a single core separation jig is applied to a four-core tape core.
FIGS. 1 to 14 show a first embodiment of a single-core separating jig for realizing a single-core separating method for a tape core according to the present invention.
[0023]
As shown in FIG. 7 (b), the single-core separating jig 21 of the first embodiment is configured such that four single-core optical fibers (so-called optical fiber wires) 3 are arranged in a line and collectively. A portable jig for processing an optical fiber ribbon (hereinafter, referred to as a tape ribbon) 5 formed as an integral tape by the coating 4 into a form in which each single core 3 is separated into individual pieces. A pair of upper and lower levers 23, 24 sandwiching the tape core 5 from the side by a gripping operation, and a pair of upper and lower levers separated in the longitudinal direction of the tape core 5 inserted between the pair of upper and lower levers 23, 24. The cutting mechanism 26 and the shearing mechanism 28 provided on the levers 23 and 24 include a canner member 31 provided at a position separated from the tape core wire 5 in the width direction.
[0024]
One end of the pair of levers 23 and 24 is rotatably connected to each other by a pin 33, and is urged in the opening direction by a spring member (not shown) provided around the pin 33.
[0025]
The cutting mechanism 26 includes a guide groove 32 for positioning the tape core 5 and a center position in the width direction of the tape core 5 positioned by the guide groove 32 when the pair of upper and lower levers 23 and 24 sandwich the tape core 5. As shown in FIG. 12A, a pair of upper and lower cutting blades 34 and 35 are provided to divide the two inner single wires 3 at the center of the tape core wire 5 as shown in FIG.
The cutting blades 34 and 35 move the pair of levers 23 and 24 and the tape core 5 along the length of the tape core 5 in a state where the tape core 5 is in contact with the tape core 5 so that the tape core 5 is moved. The two single wires 3 inside the wire 5 are separated over a predetermined length.
[0026]
Each of the cutting blades 34 and 35 has a disk shape and is rotatably mounted. Normally, the batch covering 4 of the tape core wire 5 is cut in a non-rotating state, but when the blade hitting the batch covering 4 is damaged, it is possible to extend the sharpness by rotating and using a part that is not damaged. it can.
[0027]
The shearing mechanism 28 includes a guide groove 41 for positioning the tape core 5 when the pair of upper and lower levers 23 and 24 sandwich the tape 5, and a tape for sandwiching the tape 5 positioned by the guide groove 41. The two single wires 3 outside the core wire 5 and the two single wires 3 inside the center portion are pressed in opposite directions to each other, as shown in FIG. A form in which the collective covering 4 is sheared on both sides of the single core wire 3 and the inner two single core wires 3 and each single core wire 3 on both sides thereof are separated in the thickness direction of the tape core wire 5. A pair of upper and lower pressing dies 43 and 44 formed between the inner two single core wires 3 separated in the thickness direction of the tape core wire 5 by shearing of the collective coating 4 and the single core wires 3 on both sides thereof. A tear member 46 is provided so as to be able to be inserted into and removed from the gap 47 (see FIG. 13 and corresponds to the reference numeral 9 in FIG. 23B). To have.
[0028]
As shown in FIG. 13, the shearing mechanism 28 includes a tear member 46 in a gap 47 between the two inner single wires 3 separated in the thickness direction of the tape core wire 5 and the single wires 3 on both sides thereof. Is inserted, the pair of levers 23 and 24 and the tape core 5 are relatively moved along the length direction of the tape core 5, whereby the two single cores 3 inside the tape core 5 are moved. And the outer single wire 3 are separated over a predetermined length.
[0029]
As shown in FIG. 2, the tearing member 46 is provided on the lever 24 so as to protrude from an L-shaped support 63 movably mounted in the width direction of the tape core wire 5. When the pair of levers 23 and 24 are closed, the L-shaped support 63 engages with the groove 65 a of the drive lever 65 protruding from the upper lever 23, and the slider mounted on the upper surface of the lever 23. When the 61 is moved in the direction of the arrow (b) in FIG. 1, the L-shaped support 63 slides via the drive lever 65 linked to the slider 61, so that the L-shaped support 63 is inserted into the gap 47 shown in FIG. Become.
The slider 61 is urged in the return direction by an elastic means (not shown). When the urging by the finger in the direction of the arrow (b) in FIG. 1 is released, the slider 61 reverses the direction of the arrow (b) by the urging force of the elastic means. Then, the tearing member 46 is returned to the initial position where the tearing member 46 is pulled out of the gap 47.
[0030]
As shown in FIG. 6, the canner member 31 includes a canner portion 51 provided on the upper lever 23 and a canner portion 52 provided on the lower lever 24. Each of the canner portions 51, 52 is provided with a cutting blade 51a, 52a such that the tip bites into the collective coating 4 of the tape core wire 5, and the tape core wire 5 sandwiched between these canner portions 51, 52 is provided. When it is pulled in the direction of the arrow (a) in FIG. 6, the respective cutting blades 51a and 52a bite into the collective coating 4 as shown in FIG. 7 (a), and as shown in FIG. The batch coating 4 is shaved with a predetermined thickness.
By cutting the collective coating 4 with the canner member 31, separation by the cutting mechanism 26 and the shearing mechanism 28 can be facilitated.
In addition, there are various thicknesses of the collective coating 4 in the tape core wire 5, and those having a small thickness (about 0.3 mm) are directly cut without performing the cutting process by the canner member 31. It is possible to perform a separation process by the cutting mechanism 26 and the shearing mechanism 28.
Therefore, in the present embodiment, the canner member 31 is provided, but the canner member 31 can be omitted.
[0031]
On the upper surface of the upper lever 23, an arrow 66 indicating a direction in which the tape core wire 5 is inserted between the pair of levers 23 and 24 is indicated.
[0032]
Next, a description will be given of a method of separating the single core fiber of the tape core using the single core separation jig 21 described above.
First, when the thickness of the collective coating 4 of the tape core wire 5 is large, the end of the tape core wire 5 is pulled out after being inserted into the positioning grooves 51b and 52b of the canner member 31, as shown in FIGS. As described above, the thickness of the collective coating 4 is set to a certain value or less. Note that, as described above, the cutting process of the collective coating 4 is selected depending on the type of the tape core 5, and even when the cutting process is performed, the tape core 5 is cut. In some cases, removing only one side improves the subsequent cutting and shearing treatment.
Next, as shown in FIGS. 9 and 10, the terminal of the tape core wire 5 in which the collective coating 4 has a constant thickness with the canner member 31 is connected to the guide groove 32 of the cutting mechanism 26 mounted on the lower lever 24. Then, the pair of levers 23 and 24 are closed by passing through the guide groove 41 of the shearing mechanism 28.
[0033]
When the pair of levers 23 and 24 are closed, as shown in FIG. 12A which is a cross-sectional view taken along the line KK of FIG. The tape core wire 5 is divided into two at the center in the width direction by the blades 34 and 35. In addition, at the installation position of the shearing mechanism 28, as shown in FIG. 12B, which is a sectional view taken along line LL of FIG. The collective coating 4 is sheared on both sides of the single core wire 3 to form a form in which the two inner single core wires 3 and each single core wire 3 on both sides thereof are separated in the thickness direction of the tape core wire 5. .
[0034]
Next, as shown in FIG. 13, the gap 47 between the two inner single wires 3 separated by the shearing of the collective coating 4 in the thickness direction of the tape core wire 5 and the single wires 3 on both sides thereof is formed. With the tearing member 46 inserted, the single-core separating jig 21 and the tape core 5 are relatively moved so that the tape core 5 is fed in the direction of arrow (c) in FIG. The separation by the cutting mechanism 26 and the separation by the shearing mechanism 28 progress in the relative movement directions.
[0035]
In the case of this embodiment, the cutting / separating process by the cutting mechanism 26 and the shearing / separating process by the shearing mechanism 28 are performed simultaneously, and the portion subjected to the cutting / separating process is thereafter subjected to the shearing / separating process. .
That is, the single-core separating method of the tape core performed by the single-core separating jig 21 includes a cutting / separating process for separating between the two inner single cores 3 which is the center of the tape core 5. This is a combination of a conventional method and a shearing separation process of separating the single core wires 3 on both sides of the tape core wires 5 while leaving the two center wires of the tape core wires 5, as shown in FIG. The two single wires 3 at the center, which could not be separated alone in the shearing separation process, can be separated into one single wires 3 by the cutting separation process. All of the single wires 3 can be separated one by one.
In other words, there is no need for the operator to manually separate the single-core wires 3 joined together into two single-core wires 3.
Accordingly, it is possible to improve workability in processing all the single core wires 3 constituting the tape core wire 5 into a form in which the single core wires 3 are separated one by one, and it is impossible to perform manual operation. It is also possible to prevent the single core wire 3 from being damaged by the operation.
[0036]
In addition, the single-core separating jig 21 of the tape core 5 according to the present embodiment includes a tape on which a cutting mechanism 26 and a shearing mechanism 28 separate on a pair of upper and lower levers 23 and 24 sandwiching the tape core 5. The single-core separating jig 21 having the tape core 5 sandwiched between a pair of levers 23 and 24 and the tape core 5 are sequentially arranged along the longitudinal direction of the core 5. The single core wires 3 constituting the tape core wire 5 can be separated one by one simply by relatively moving them along the direction.
That is, all the four single-core wires 3 constituting the tape core 5 can be separated one by one by a single relative movement operation, and the time required for single-core 3 separation is greatly reduced. Can be shortened.
[0037]
FIGS. 15 to 20 show a second embodiment of a single-core separating jig for implementing the single-core separating method for a tape core according to the present invention.
In the single-core separating jig 21 of the first embodiment shown in FIG. 1, the cutting mechanism 26 and the shearing mechanism 28 are arranged in series with respect to the insertion direction of the tape core 5; In the single-core separating jig 71 of the present embodiment, the equipment positions of the cutting mechanism 26 and the shearing mechanism 28 are arranged in parallel so as to be shifted in the width direction of the tape core 5.
Since the configurations of the cutting mechanism 26 and the shearing mechanism 28 are the same as those of the first embodiment, detailed description will be omitted.
[0038]
When the cutting mechanism 26 and the shearing mechanism 28 are arranged in parallel in this manner, for example, first, the tape core 5 is set on the shearing mechanism 28, and the shearing mechanism 28 is set with respect to the predetermined length L1 of the tape core 5. , And then, as shown in FIG. 21 (b), the tip portion X where the separation process by the shearing mechanism 28 has not been executed is set in the cutting mechanism 26, and the unexecuted tip portion X is sequentially arranged from the unexecuted tip portion X. As shown in FIG. 21A, by performing the separation process by the cutting mechanism 26, both the cut and separation process and the shear separation process are performed. The tip portion X where the shear separation process has not been performed is discarded.
[0039]
Compared with the single core separation jig 21 of the first embodiment, the number of working steps is increased, but the cutting separation processing and the shear separation processing can be performed by a single jig, and the tape core 5 is formed. This is the same in that all of the four single-core wires 3 can be separated one by one.
[0040]
In each of the above embodiments, the case where the single-core separating method and the single-core separating jig of the tape core are applied to the four-core core is described. The present invention can also be applied to tape cores such as cores, and a single processing operation can separate one single core from these tape cores.
[0041]
【The invention's effect】
A single-core separating method and a single-core separating jig of a tape core of the present invention are provided with a cutting / separating process for separating between single cores at a central portion of a tape core, It is a combination of a single-core wire and a single-core wire that can not be separated by the conventional method. For example, in the case of a four-core tape, all the single cores can be separated one by one.
In other words, there is no need for the operator to manually separate the joined single-core wires into single-core wires.
Therefore, it is possible to improve the workability when processing the single core wire constituting the tape core wire into a single separated form, and it is also possible to prevent the single core wire from being damaged by an unreasonable operation during manual work. It can also be prevented.
[0042]
In particular, in the single-core separating method of the tape core, which is performed by using a jig in which the cutting mechanism and the shearing mechanism are sequentially arranged in the length direction of the tape core, a single core having the tape core sandwiched between a pair of levers. With a single relative movement operation that moves the core separation jig and the tape core along the length of the tape core, one single core can be separated from the tape core. The required time can be greatly reduced.
In addition, by simultaneously starting the processing by the cutting mechanism and the shearing mechanism, the processing of single-core separation by both mechanisms can be executed efficiently.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of a single-core separating jig for realizing a single-core separating method for a tape core according to the present invention.
FIG. 2 is an exploded perspective view of the single-core separating jig shown in FIG.
FIG. 3 is a side view of the single-core separating jig shown in FIG. 1;
FIG. 4 is a side view of the single-core separating jig shown in FIG. 1 when a pair of upper and lower levers are closed.
FIG. 5 is a sectional view taken along line DD of FIG. 4;
FIG. 6 is a sectional view taken along the line EE of FIG. 2;
7A is an explanatory view showing a state in which the blade of the canner member shown in FIG. 6 cuts the blanket covering of the tape core wire, and FIG. 7B is a view as viewed from the arrow F in FIG.
8 (a) is a side view of a tape core wire of which blanket coating has been shaved by a canner member, FIG. 8 (b) is a view from arrow G in FIG. 8 (a), and FIG. .
9 is a cross-sectional view showing a state in which a tape core is placed on a cutting mechanism and a shearing mechanism of the single-core separating jig shown in FIG. 1 and immediately before a pair of levers are closed. .
10A is a cross-sectional view taken along a line II in FIG. 9, and FIG. 10B is a cross-sectional view taken along a line JJ in FIG.
11 is a cross-sectional view showing a state in which a pair of levers is closed in a state where a tape core is placed on a cutting mechanism and a shearing mechanism of the single-core separating jig shown in FIG. 1; is there.
12A is a sectional view taken along line KK of FIG. 11, and FIG. 12B is a sectional view taken along line LL of FIG.
FIG. 13 shows a state where the tape core is placed on the cutting mechanism and the shearing mechanism of the single core separating jig shown in FIG. 1 and the pair of levers is closed, and the tape core and the single core are closed. It is operation | movement explanatory drawing at the time of moving a separation jig relatively.
14A is a sectional view taken along line MM of FIG. 13, and FIG. 14B is a sectional view taken along line NN of FIG.
FIG. 15 is a perspective view of a second embodiment of a single-core separating jig for realizing a single-core separating method for a tape core according to the present invention.
FIG. 16 is an exploded perspective view of the single-core separating jig shown in FIG.
17 is a side view of the single-core separating jig shown in FIG.
18 is a side view of the single-core separating jig shown in FIG. 15 when a pair of upper and lower levers is closed.
FIG. 19 is a sectional view taken along the line OO of FIG. 18;
FIG. 20 is a sectional view taken along the line PP of FIG. 18;
FIG. 21 (a) is a front view of the single-core separating jig shown in FIG. 15, which is used to process the tape core wire, which has been subjected to the shearing processing by the shearing mechanism over a predetermined length L1, by the cutting mechanism. (B) is a view on arrow Q of (a).
FIGS. 22A and 22B are explanatory views of a conventional single-core wire separation method by shearing separation, wherein FIG. 22A is a front view showing a state before shearing, and FIG.
23A and 23B are explanatory views of a conventional single-core wire separation method by shearing separation, wherein FIG. 23A is a front view showing a state after shearing, and FIG.
24 (a) and 24 (b) are explanatory views of a conventional single-core separating method by cutting and separating, wherein FIG. 24 (a) is a front view showing a state before cutting, and FIG.
FIG. 25 is a cross-sectional view of the tape core cut by the single-core separating method shown in FIG. 24;
[Explanation of symbols]
3 single core wire
4 Batch coating
5 Tape core
21 Single wire separation jig
23, 24 lever
26 Cutting mechanism
28 Shearing mechanism
34,35 cutting blade
43,44 Push type
71 Single core wire separation jig

Claims (7)

A single-core separating method for separating a single core from an optical fiber ribbon,
A cutting separation process of applying a cutting blade to the tape core wire to relatively move the tape core wire along the length direction of the tape core wire and a shear separation process of moving a tearing member along the length direction of the tape core wire are performed. A method for separating a single core fiber from a tape, comprising the steps of: By performing the cutting and separating process, by a cutting blade applied to the center position in the width direction of the tape core wire, a single core wire at the center of the tape core wire is separated over a predetermined length,
Performing the shear separation process, sandwiching the tape core wire between a pair of upper and lower pressing dies, pressing the central portion of the tape core wire and the single core wires on both sides thereof in opposite directions to each other to increase the thickness of the tape core wire. After being formed in a form separated in the vertical direction, the tear wire is inserted into the gap between the separated central portion and the single core wires on both sides thereof, and the tape core is extended over a predetermined length by a tearing member. 2. The single-core separating method for a tape core according to claim 1, wherein the single core is separated from the core. A cutting mechanism for performing the cutting / separating process and a shearing mechanism for performing the shearing / separating process are sequentially arranged along the length direction of the tape core wire, and the tape is laid over the cutting mechanism and the shearing mechanism. After placing the core wire, separation processing by the cutting mechanism and the shearing mechanism is started substantially simultaneously, and at this time, the cutting mechanism is sent so that the tape core wire is sent from the cutting mechanism side toward the shearing mechanism side. The method according to claim 1, wherein the cutting and separating process and the shearing and separating process are performed simultaneously by relatively displacing a shearing mechanism and the tape core. . A single-core separation jig for separating a single core from an optical fiber core,
A pair of upper and lower levers that sandwich the tape core wire from the side by a gripping operation, and are mounted on the upper and lower pair of levers, and a cutting blade is applied to the tape core wire to move the tape core wire along the length direction of the tape core wire. A single fiber separating jig for a tape core, comprising: a cutting mechanism for moving; and a shearing mechanism for moving a tearing member along the length direction of the tape core. The cutting mechanism includes the cutting blade that divides a single core wire at the center of the tape core wire when the pair of upper and lower levers hits the center position in the width direction of the tape core wire when sandwiching the tape core wire. ,
The shearing mechanism presses the central portion of the tape core wire and the single core wires on both sides thereof in opposite directions when the pair of upper and lower levers sandwich the tape core wire in the thickness direction of the tape core wire. A pair of upper and lower press dies to be separated into a separated form, and the tape core is provided so as to be able to be inserted and removed in a gap between a central part separated in the thickness direction of the tape core and a single core on both sides thereof. The jig for separating a single core fiber of a tape core according to claim 4, further comprising the tearing member that separates a central portion and a single core wire on both sides thereof over a predetermined length. The shearing mechanism and the cutting mechanism are sequentially arranged along the longitudinal direction of the tape core wire inserted between the pair of upper and lower levers, when the pair of upper and lower levers and the tape core wire are relatively moved. 6. The single-core separating jig for a tape core according to claim 4, wherein the tape core is sent from the cutting mechanism side toward the shearing mechanism side. The shearing mechanism and the cutting mechanism are arranged in parallel with being shifted in the width direction of the tape core wire inserted between the pair of upper and lower levers, and are integrally provided on the pair of upper and lower levers. Item 6. A jig for separating a single core fiber of a tape core according to Item 4 or 5.

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