JP2012155275A - Optical fiber ribbon separation tool and optical fiber ribbon separation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber ribbon separation tool and an optical fiber ribbon separation method such that an optical fiber ribbon is easily separated along the length.SOLUTION: The optical fiber ribbon separation tool includes a separation tool 10 for making a cut in an upper surface of an optical fiber ribbon 1 along the length, and a twisting prevention tool 20 for preventing the optical fiber ribbon 1 from twisting. The separation tool 10 includes a lock plate 19 attached to a tip part of an upper surface of a main body lower part 11 so as to rotate on a lock plate rotation shaft 19a as a center shaft. The twisting prevention tool 20 includes two grip parts 21 for gripping the optical fiber ribbon 1 nearby both ends of a separation part, a connecting rod 22 fitted with the grip parts 21 so that the grip parts 21 slide along the length, and a fixation part 23 having both ends fitted to the two grip parts 21 respectively and formed by a plurality of beads in a row with a cord-like member.

Description

  The present invention relates to an optical fiber ribbon separation tool and an optical fiber ribbon separation method suitable for separating an optical fiber ribbon along the longitudinal direction.

  Use an optical fiber tape separation tool to remove the optical fiber ribbon from the optical fiber cable and connect the individual optical fibers to perform post-branch connection work of the optical fiber cable. The tape core wire is separated along the longitudinal direction (see, for example, Patent Documents 1 and 2 below).

JP-A-11-237510 JP 2003-307629 A

  However, when the optical fiber ribbon separation process using the optical fiber ribbon separation tool is performed in a closure on a utility pole or the like, the scaffolding is bad and the worker is working in a collapsed posture. For this reason, when an inexperienced worker easily performs an operation using the optical fiber ribbon separation tool, there is a problem that the optical fiber core in use is damaged or cut.

  In addition, when the optical fiber ribbon is inserted and held in a groove formed in the lower part of the main body, as in the case of the optical fiber ribbon separator for uncut cable disclosed in the above-mentioned Patent Document 1, a long length is required. If the optical fiber cable is twisted, the optical fiber ribbon inserted into the groove is also twisted, or a part of the optical fiber ribbon jumps out of the groove. There was a problem that it could not be separated.

  An object of the present invention is to provide an optical fiber ribbon separation tool and an optical fiber ribbon separation method that can easily separate an optical fiber ribbon along the longitudinal direction.

The first optical fiber ribbon separation tool of the present invention is an optical fiber ribbon separation tool for separating the optical fiber ribbon (1) along the longitudinal direction, the optical fiber ribbon. A stapler type separator (10) for making a cut along the longitudinal direction on the upper surface of the optical fiber, and the separator has a groove (11a) for fitting the optical fiber ribbon. A lower body portion (11) formed on the distal end side, an upper body portion (12) having a distal end attached to the distal end portion of the lower body portion so that the distal end portion can be opened and closed with respect to the lower body portion; An upper blade (17) having a pointed tip attached to the lower surface of the upper part of the main body toward the lower side of the main body, and a tip of the upper surface of the lower part of the main body so as to be rotatable about the lock plate rotation shaft (19a) as a central axis Lock plate ( 9), and the end surface of the lock plate opposite to the lock plate rotation shaft is inclined so that the angle formed with the upper surface of the lock plate when the lock plate is tilted is an acute angle. The lower end side of the end face of the upper end portion of the main body closes the front end portion of the upper portion of the main body with respect to the lower portion of the main body in a state where the optical fiber ribbon is not fitted in the groove in the lower portion of the main body. When the lock plate is tilted later, the inclined surface comes into close contact with the inclined surface of the lock plate.
Here, in the state where the tip of the upper part of the main body is opened with respect to the lower part of the main body, the tip of the upper blade is buried and the front end of the upper part of the main body is closed with respect to the lower part of the main body. Then, a presser member (18) made of an elastic member, which presses the upper surface of the optical fiber ribbon inserted into the groove sandwiched by the groove at the lower part of the main body so that the tip of the upper blade protrudes from the lower surface. ) May be further provided.
The 2nd optical fiber tape core wire separation tool of the present invention is an optical fiber tape core wire separation tool for separating an optical fiber tape core wire (1) along a longitudinal direction, The optical fiber tape core wire A twist prevention device (20) for preventing twisting of the optical fiber, and the twist prevention device includes two gripping portions (21) for gripping the vicinity of both ends of the separation portion of the optical fiber ribbon. A connecting rod (22) to which the two gripping portions are attached so that the two gripping portions slide along the longitudinal direction, and both ends are respectively attached to the two gripping portions; and A plurality of balls are connected by a string-like member, and a fixing part (23) formed into a rosary shape is provided.
Here, the two gripping portions are clip-like ones gripping the optical fiber tape core wire from the upper surface side and the lower surface side of the optical fiber tape core wire at the tip portions, and both ends of the fixing portion However, it may be respectively attached to the end portions of the two gripping portions.
The third optical fiber ribbon separator tool of the present invention includes a separator for the first optical fiber ribbon separator of the present invention, and a twist preventer for the second optical fiber ribbon separator of the present invention. It is characterized by comprising.
Here, the connecting rod of the anti-twisting tool has a cylindrical shape, and a lower semicircular groove (11b) is formed at the tip of the upper surface of the lower part of the main body of the separating tool, A circular groove (12a) is opposed to the lower semicircular groove at the tip of the lower surface of the upper part of the main body of the separating tool when the tip of the upper part of the main body is closed with respect to the lower part of the main body. It is formed to be a circular tube, and after the optical fiber tape core wire is fitted in the groove at the lower part of the main body of the separator, the front end of the main body is closed with respect to the lower part of the main body, The connecting rod of the twist preventing tool is sandwiched between the lower semicircular groove and the upper semicircular groove.
The fiber optic tape core wire separation method of the present invention uses the third fiber optic tape fiber core separation tool of the present invention to separate the fiber optic tape fiber strands along the longitudinal direction. In the separation method, the two gripping portions of the twist preventing tool grip the vicinity of both ends of the separation portion of the optical fiber ribbon, and the optical fiber ribbon is attached to the lower portion of the main body of the separation tool. Fitting in the groove, closing the tip of the upper part of the main body with respect to the lower part of the main body, sandwiching the connecting rod of the torsion prevention tool between the lower semicircular groove and the upper semicircular groove, Tilt the lock plate, slide the separating tool along the longitudinal direction of the connecting rod of the twist preventing tool, and cut the upper surface of the optical fiber ribbon with the upper blade of the separating tool. Special To.
Here, only when the locking plate can be tilted until the inclined surface of the locking plate of the separating tool comes into close contact with the inclined surface of the upper portion of the main body of the separating tool, the separating tool is attached to the twist preventing tool. It may be slid along the longitudinal direction of the connecting rod, and an upper surface of the optical fiber ribbon may be cut by the upper blade of the separator.

The optical fiber ribbon separation tool and the optical fiber ribbon separation method of the present invention have the following effects.
(1) In the first optical fiber ribbon separating tool of the present invention, the separating tool includes the lock plate, so that the inclined surface of the lock plate is in close contact with the inclined surface of the upper body when the lock plate is tilted. By checking whether or not the optical fiber tape core wire is sandwiched between the lower part of the main body and the upper part of the main body, it is possible to easily determine whether or not the optical fiber tape core wire is damaged. The optical fiber ribbon core wire can be separated without any trouble.
(2) In the second optical fiber ribbon separation tool of the present invention, by providing the twist prevention tool, even if a long optical fiber cable is twisted, a portion for separating the optical fiber ribbon is not provided. It is possible to prevent twisting or jumping out of the groove.
(3) In the third optical fiber ribbon separation tool of the present invention, the effects (1) and (2) can be obtained by providing the separating tool and the twist preventing tool.
(4) In the optical fiber tape core separation method of the present invention, by performing the optical fiber tape core separation operation using the third optical fiber tape core separation tool of the present invention, the above (1) and ( The effect 2) can be obtained.
(5) Since it is possible to prevent accidental disconnection of the optical fiber core in use, the quality of the communication line can be improved.

It is a figure which shows the structure of the optical fiber tape core wire separation tool by one Example of this invention, (a) is a figure for demonstrating the structure of the separating tool 10, (b) is the structure of the twist prevention tool 20. FIG. It is a figure for demonstrating. It is a figure for demonstrating the usage method of the separating tool 10 shown to Fig.1 (a). It is a figure for demonstrating the procedure which performs the isolation | separation operation | work of the optical fiber ribbon 1 using the separating tool 10 shown to Fig.1 (a), and the twist prevention tool 20 shown to FIG.1 (b).

  In order to prevent twisting of the optical fiber tape core and the separator provided with a lock plate for determining whether or not the optical fiber ribbon is sandwiched between the lower body and the upper body. This was realized by separating the optical fiber ribbon in the longitudinal direction using a twist prevention tool.

Hereinafter, embodiments of the optical fiber ribbon separation tool and the optical fiber ribbon separation method of the present invention will be described with reference to the drawings.
An optical fiber ribbon separator according to an embodiment of the present invention includes a separating tool 10 shown in FIG. 1A and a twist preventing tool 20 shown in FIG.

The separator 10 is of a stapler type, and includes a rectangular parallelepiped lower portion 11, a rectangular parallelepiped upper portion 12, two connecting plates 13 for connecting the lower portion 11 and the upper portion 12, and Both ends are fixed shafts 14 attached to both side surfaces of the end portion of the lower portion 11 of the main body, and both ends are respectively connected to both side surfaces of the end portion of the upper portion 12 of the main body 12 with the connecting plates 13 therebetween. And an attached rotating shaft 15.
As a result, the main body upper portion 12 is rotatable with respect to the main body lower portion 11 about the rotation shaft 15 as a central axis. That is, the front end portion of the main body upper portion 12 can be opened and closed with respect to the main body lower portion 11.

In the following description, the horizontal direction shown in FIG. 1A (longitudinal direction of the main body lower portion 11 and the main body upper portion 12) is referred to as “lateral direction”, and the vertical direction shown in FIG. The direction perpendicular to the longitudinal direction) is defined as the “longitudinal direction”.
Further, the surface of the optical fiber ribbon 1 that is cut by the upper blade 17 of the separating tool 10 when the optical fiber ribbon 1 is separated is referred to as “the upper surface of the optical fiber ribbon 1”.
Furthermore, the length along the direction (left-right direction in the drawing) in which the optical fiber cores of the optical fiber ribbon 1 shown in FIG. 1A are arranged is defined as “width of the optical fiber ribbon 1”.

A groove 11a for fitting the optical fiber ribbon 1 is formed on the upper surface of the lower end 11 along the horizontal direction on the tip side from the center so that the lower surface of the optical fiber ribbon 1 is in close contact with the bottom. Has been.
The width of the groove 11a (the length along the lateral direction of the main body lower portion 11) is set so that the fitted optical fiber ribbon 1 does not move freely along the width of the groove 11a. It is slightly larger than the width.

A lock plate 19 is attached to the front end portion of the upper surface of the main body lower portion 11 so as to be rotatable about the lock plate rotation shaft 19a.
The end surface of the lock plate 19 on the lock plate rotation shaft 19a side is a vertical surface, but the end surface of the lock plate 19 opposite to the lock plate rotation shaft 19a is provided with the lock plate 19 as shown in FIG. The inclined surface is such that the angle formed with the upper surface of the lock plate 19 when tilted is an acute angle.

  A semicircular lower semicircular groove 11b is formed on the front end side of the groove 11a of the main body lower portion 11.

The main body upper portion 12 has one end fixed to the bottom surface of the main body lower portion 11 so that the front end portion of the main body upper portion 12 opens with respect to the main body lower portion 11 by a spring force (that is, the front end of the main body upper portion 12). Part is separated from the tip of the main body lower part 11).
Further, a conical upper blade 17 is attached to the lower surface on the tip end side of the center along the longitudinal direction of the main body upper portion 12 with the pointed end directed toward the lower body 11 side.
In addition, the upper blade 17 is attached so that a tip part may give a cut only to the upper surface (upper surface of a secondary coating | coated) of the optical fiber tape core wire 1. FIG.

In the state in which the upper end portion of the main body upper portion 12 is opened with respect to the lower portion 11 of the main body, the upper blade 17 has a pressing member 18 (sponge, rubber or the like) attached to the lower surface of the main body upper portion 12 as shown in FIG. 2), the tip of the main body upper part 12 is fitted into the groove 11a by the presser member 18 as shown in FIG. By pressing the upper surface of the optical fiber ribbon 1, the pointed end protrudes from the lower surface of the pressing member 18.
Therefore, the presser member 18 is attached to a position where the presser member 18 is sandwiched by the groove 11a when the front end of the main body upper part 12 is closed with respect to the main body lower part 11, and the width of the presser member 18 is slightly larger than the width of the groove 11a. It has been made smaller.

The upper surface side of the end surface on the front end portion side of the main body upper portion 12 is a vertical surface, but the lower surface side of the end surface on the front end portion side of the main body upper portion 12 is in a state where the optical fiber ribbon 1 is not fitted in the groove 11a. Thus, when the lock plate 19 is tilted after the front end portion of the main body upper portion 12 is closed with respect to the main body lower portion 11, the inclined surface comes into close contact with the inclined surface of the lock plate 19.
Thus, when the optical fiber ribbon 1 is completely fitted in the groove 11a as shown in FIG. 2C, the main body upper portion 12 is closed when the front end portion is closed with respect to the main body lower portion 11. Since the upper surface of the lower portion 11 and the lower surface of the main body upper portion 12 are in close contact with each other, until the inclined surface of the lock plate 19 is in close contact with the inclined surface of the main body upper portion 12 (that is, the lower surface of the main body upper portion 12 is in close contact with the upper surface of the main body lower portion 11. Up to) the lock plate 19 can be brought down. However, for example, the optical fiber tape core wire 1 such that a part of the optical fiber tape core wire 1 protrudes from the groove 11a and is sandwiched between the upper surface of the lower body portion 11 and the lower surface of the upper body portion 12 is completely in the groove 11a. In the case where the lock plate 19 is not fitted, the lock plate 19 cannot be tilted until the inclined surface of the lock plate 19 comes into close contact with the inclined surface of the main body upper portion 12. As a result, the operator inserts the optical fiber ribbon 1 into the groove 11a, closes the tip of the main body upper portion 12 with respect to the lower body 11, and then tilts the lock plate 19, thereby It can be easily determined whether or not 1 is completely fitted in the groove 11a.

A semicircular upper semicircular groove 12a is formed on the front end side of the main body upper portion 12 so as to face the lower semicircular groove 11b when the front end portion of the main body upper portion 12 is closed with respect to the lower body portion 11, It is formed to become.
Thereby, when the front end portion of the main body upper portion 12 is closed with respect to the lower portion of the main body 11, as shown in FIG. 2C, the columnar connection of the anti-twisting device 20 is performed by the lower semicircular groove 11b and the upper semicircular groove 12a. With the rod 22 sandwiched from above and below, the separating tool 10 can be slid along the longitudinal direction of the connecting rod 22 as shown in FIG.
Therefore, the diameter of the circular tube formed by the lower semicircular groove 11 b and the upper semicircular groove 12 a is slightly larger than the diameter of the connecting rod 22.

As shown in FIG. 1 (b), the twist preventing tool 20 includes two clip-shaped gripping portions 21 for gripping the vicinity of both ends of the separation portion of the optical fiber ribbon 1 along the longitudinal direction. And a columnar connecting rod 22 to which two gripping portions 21 are attached so as to be slidable.
As a result, when the two gripping portions 21 are slid along the longitudinal direction of the connecting rod 22, the optical fiber tape core wire 1 can be freely secured while ensuring a space necessary for the separation operation of the optical fiber tape core wire 1. Therefore, even if the optical fiber cable is twisted, it is possible to prevent the separation portion of the optical fiber ribbon 1 from being twisted.
Note that the two gripping portions 21 grip the optical fiber tape core wire 1 from the upper surface side and the lower surface side of the optical fiber tape core wire 1 at the tip portion, and are shown in FIGS. In a) and (b), the optical fiber ribbon 1 is gripped so that the upper surface of the optical fiber ribbon 1 is on the upper side of the drawing.

The twist preventing tool 20 is attached to the end portions of the two gripping portions 21 at both ends, and a plurality of balls (balls) are connected by string members (strings, thin wires, etc.) to form a rosary shape. The fixed part 23 is provided.
Accordingly, the fixing portion 23 can be freely bent at an arbitrary angle and can secure strength. Therefore, the fixing portion 23 can be easily fixed by twisting the fixing portion 23 to a worker's neck, waistline, or a nearby metal fitting. Therefore, the worker can perform the separation work of the optical fiber ribbon 1 with a comfortable working posture and flexibly position the optical fiber ribbon 1 to be held by the two holding portions 21. Can move.

Next, the procedure for separating the optical fiber ribbon 1 using the separating tool 10 and the twist preventing tool 20 will be described with reference to FIGS.
The worker slides the two gripping portions 21 of the twist preventing tool 20 along the longitudinal direction of the connecting rod 22 so that an interval (for example, 20 to 40 cm) necessary for the separation work of the optical fiber ribbon 1 is performed. After securing, as shown in FIG. 3A, the separated portion of the optical fiber ribbon 1 is extended with a pin, and the vicinity of both ends is held by the two holding portions 21.

  Subsequently, an operator enters the optical fiber tape core wire 1 between the main body lower portion 11 and the main body upper portion 12 in a state in which the distal end portion of the main body upper portion 12 of the separating tool 10 is opened with respect to the main body lower portion 11. The separating tool 10 is inserted from the tip of the separating tool 10 into the right side of the gripping part 21 shown in FIG. 3B until the connecting rod 22 of the twist preventing tool 20 comes to the position of the lower semicircular groove 11b of the lower part 11 of the main body. To do.

Subsequently, the operator inserts the optical fiber ribbon 1 into the groove 11 a of the lower body 11, inserts the connecting rod 22 of the twist preventing tool 20 into the lower semicircular groove 11 b of the lower body 11, and then The tip of the main body upper part 12 is closed with respect to the main body lower part 11 (see FIG. 2A).
At this time, even if the optical fiber tape core wire 1 fitted in the groove 11a of the main body lower portion 11 is inclined as shown in FIG. The upper surface of the optical fiber ribbon 1 is pressed by the pressing member 18, and the inclination of the optical fiber ribbon 1 can be eliminated as shown in FIG. Further, as shown in FIG. 2B, the connecting rod 22 of the twist preventing tool 20 is sandwiched from above and below by the lower semicircular groove 11b and the upper semicircular groove 12a.
Note that the tip of the upper blade 17 is buried in the holding member 18 in a state in which the tip of the main body upper portion 12 is open with respect to the main body lower portion 11, so that the optical fiber tape core wire fitted into the groove 11 a of the main body lower portion 11. Even if 1 is inclined as shown in FIG. 2A, it is possible to prevent the optical fiber tape core wire 1 from being damaged by the tip of the upper blade 17 hitting the upper surface of the optical fiber tape core wire 1.

  Subsequently, as shown in FIG. 2B, the worker tilts the lock plate 19 of the separating tool 10, and then tilts the lock plate 19 until the inclined surface of the lock plate 19 comes into close contact with the inclined surface of the main body upper portion 12. Check if it was possible.

  When it is confirmed that the lock plate 19 can be tilted until the inclined surface of the lock plate 19 comes into close contact with the inclined surface of the upper portion 12 of the main body, the worker shows the separating tool 10 on the right side as shown in FIG. It is slid along the longitudinal direction of the connecting rod 22 in the direction, and the upper blade 17 of the separating tool 10 cuts the upper surface of the secondary coating of the optical fiber ribbon 1.

  Subsequently, the worker raises the lock plate 19 of the separating tool 10, opens the distal end portion of the upper body 12 of the separating tool 10 with respect to the lower body 11, and then pulls out the separating tool 10. Thereafter, the worker removes the optical fiber ribbon 1 from the two grip portions 21 of the twist preventing tool 20.

In the above description, the separating operation of the optical fiber ribbon 1 is performed using the separating tool 10 and the twist preventing device 20, but the separating operation of the optical fiber ribbon 1 is performed using only the separating tool 10. However, the optical fiber tape core wire separation work can be easily performed as compared with the conventional one not provided with the lock plate 19.
Even if a conventional tool is used in place of the separating tool 10, twisting of the optical fiber ribbon 1 can be prevented by using the twist preventing tool 20 together. Can be done easily.

DESCRIPTION OF SYMBOLS 1 Optical fiber ribbon 10 Separator 11 Main body lower part 11a Groove 11b Lower semicircular groove 12 Main body upper part 12a Upper semicircular groove 13 Connecting plate 14 Fixing shaft 15 Rotating shaft 17 Upper blade 18 Holding member 19 Locking plate 19a Locking plate rotating shaft 20 twist prevention tool 21 gripping part 22 connecting rod 23 fixing part

Claims (8)

An optical fiber ribbon separator for separating the optical fiber ribbon (1) along the longitudinal direction,
A stapler-type separator (10) for making a cut along the longitudinal direction on the upper surface of the optical fiber ribbon;
The separator is
A lower portion of the main body (11) in which a groove (11a) for fitting the optical fiber ribbon is formed on the top end side of the upper surface;
A body upper portion (12) having a distal end attached to the distal end of the lower body so that the distal end can be opened and closed with respect to the lower body;
An upper blade (17) having a tip attached to the lower surface of the upper part of the main body toward the lower side of the main body;
A lock plate (19) attached to the tip of the upper surface of the lower part of the main body so as to be rotatable about a lock plate rotation shaft (19a) as a central axis;
An end surface of the lock plate opposite to the lock plate rotation shaft is an inclined surface such that an angle formed with the upper surface of the lock plate when the lock plate is tilted is an acute angle,
After the lower end side of the end surface of the upper end portion of the main body closes the front end portion of the main body with respect to the lower portion of the main body in a state where the optical fiber tape core wire is not fitted in the groove in the lower portion of the main body. When the lock plate is tilted, it is an inclined surface that comes into close contact with the inclined surface of the lock plate.
An optical fiber ribbon separation tool characterized by that.   In the state where the tip of the upper part of the main body is opened with respect to the lower part of the main body, the tip of the upper blade is buried, and when the tip of the upper part of the main body is closed with respect to the lower part of the main body, the main body A pressing member (18) made of an elastic member, which is configured to press the upper surface of the optical fiber ribbon inserted into the groove and sandwich the lower groove so that the tip of the upper blade protrudes from the lower surface. The optical fiber tape core separating tool according to claim 1, further comprising: An optical fiber ribbon separator for separating the optical fiber ribbon (1) along the longitudinal direction,
A twist prevention tool (20) for preventing twisting of the optical fiber ribbon;
The twist preventing tool is
Two gripping portions (21) for gripping the vicinity of both ends of the separation portion of the optical fiber ribbon,
A connecting rod (22) to which the two gripping portions are attached so that the two gripping portions slide along the longitudinal direction;
A fixed part (23) having both ends attached to the two gripping parts and connected to a plurality of balls with a string-like member to form a rosary;
An optical fiber ribbon separation tool, comprising: The two gripping portions are clip-like ones sandwiching the optical fiber tape core wire from the upper surface side and the lower surface side of the optical fiber tape core wire at the tip portion,
Both ends of the fixed part are respectively attached to the end parts of the two gripping parts,
The optical fiber ribbon separator according to claim 3, wherein A separator according to claim 1 or 2, and
A twist prevention device according to claim 3 or 4,
An optical fiber ribbon separation tool characterized by comprising: The connecting rod of the anti-twisting tool has a cylindrical shape;
A lower semicircular groove (11b) is formed at the tip of the upper surface of the lower part of the main body of the separator;
An upper semicircular groove (12a) is opposed to the lower semicircular groove when the tip of the upper part of the main body is closed to the lower part of the main body at the tip of the lower surface of the upper part of the main body of the separator. And is formed to be a circular pipe,
After the optical fiber tape core wire is fitted into the groove in the lower part of the main body of the separator, the connecting rod of the twist prevention tool is moved to the lower part when the tip of the upper part of the main body is closed with respect to the lower part of the main body. Is adapted to be sandwiched between a semicircular groove and the upper semicircular groove,
6. The optical fiber ribbon separator according to claim 5, wherein An optical fiber ribbon separation method for separating the optical fiber ribbon along the longitudinal direction using the optical fiber ribbon separation tool according to claim 6,
Grip the vicinity of both ends of the separated portion of the optical fiber ribbon with the two gripping portions of the twist preventing tool,
The optical fiber ribbon is fitted into the groove at the lower part of the main body of the separator,
Closing the tip of the upper part of the main body with respect to the lower part of the main body, and sandwiching the connecting rod of the anti-twisting tool between the lower semicircular groove and the upper semicircular groove;
Defeat the locking plate of the separating tool,
Sliding the separating tool along the longitudinal direction of the connecting rod of the anti-twisting tool, and cutting the upper surface of the optical fiber ribbon with the upper blade of the separating tool;
A method of separating an optical fiber ribbon.   Only when the locking plate can be tilted until the inclined surface of the locking plate of the separating tool comes into close contact with the inclined surface of the upper portion of the main body of the separating tool, the separating tool is connected to the connecting rod of the twist preventing tool. The optical fiber tape core wire separation method according to claim 7, wherein the optical fiber tape core wire is cut along the upper surface of the optical fiber tape by the upper blade of the separator.

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