JPH0193704A - Coating remover for ribbonlike multicore optical fiber - Google Patents

Abstract

PURPOSE:To collectively remove the coating layer of a ribbonlike multicore optical fiber by providing upper and lower clamping parts of the optical fiber, a pair of notching blades, and guide parts of the optical fiber on surfaces facing each other of upper and lower grasping plates which can be opened and closed with a revolving shaft as the center. CONSTITUTION:For the purpose of collectively removing the coating of a ribbonlike multicore optical fiber 20, the optical fiber 20 is held between upper and lower clamping parts 6 and 7 and is fixed in the thickness direction. In this case, the optical fiber 20 is prevented from slipping in the breadthwise direction and is set because guide parts 10 and 11 are provided before notching blades 8 and 9. A lock mechanism 12 is locked to surely closely bring the optical fiber 20 into contact with upper and lower clamping parts 6 and 7. A coating remover is moved in the direction of an arrow in this state to collectively remove the coating of the ribbonlike multicore optical fiber 20 where the adhesive strength between an optical fiber glass 21 and the coating layer is high.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a tool for removing the end coating layer when connecting or measuring optical fibers, optical cables, etc. This invention relates to a coating remover that removes coating layers all at once.

(Prior Art and Interval Pressure Point to be Determined) FIG. 3 is a cross-sectional view of an example of a ribbon-shaped multi-core optical fiber using the vL decluttering device of the present invention. As shown in the drawing, a plurality of coated optical fibers each having a coating layer (22) provided on an optical fiber glass (21) are arranged adjacent to each other in parallel on a plane, and common to these coated optical fibers. An outer covering layer (23) is provided on the outer covering layer (23).

Such a ribbon cane multi-core optical fiber (2G) can be connected all at once by removing the covering layer (22) and the outer covering layer (23), or conversely, it is possible to remove the covering layer (22) and the outer covering layer (23) and connect them together. 23)
It is also possible to separate each optical fiber by removing only the inner coating fl (22) and connect them individually.

However, when the enveloping layers (22) and (23) are removed all at once to perform the en masse connection, generally the inner enveloping layer (22) and the optical fiber glass (21) have a high density, and the enveloping layer (
22 and (23) were difficult to remove. Furthermore, even if a structure is adopted for gripping the tip of the optical fiber, conventional tools require manual pressure to be applied to generate surface pressure, making it difficult to remove the coating.

(Means for Solving the Problems) The present invention provides a coating remover that easily and safely removes the coating layer of the above-mentioned ribbon-shaped multi-core optical fiber all at once. The upper and lower gripping plates, which are configured to be openable and closable, are provided with upper and lower clamping parts for the optical fiber, a pair of damaging blades, and a guide part for the optical fiber on opposing surfaces thereof, and are provided with a locking mechanism for locking the upper and lower gripping plates. It is in.

FIG. 1 is an explanatory view of a specific example of the coating remover of the present invention, showing a top view (FIG. 1) and a side view (FIG. 1) with the upper and lower gripping plates locked by a locking mechanism.

FIG. 2 is a side view of the coating remover of the present invention in a state where the locking mechanism is released and the upper grip plate is opened.

In the drawing, 0) is an upper gripping plate, and (2) is a lower gripping plate, both of which can be opened and closed by a rotating shaft (3) provided at their ends, and a torque spring (
4) and an opening/closing stop (5).

Near the tips of the opposing surfaces of the upper and lower gripping plates (+) (2), there are upper and lower clamping tables (B) (7) for gripping the ribbon-shaped multi-core optical fiber (20), and a pair of upper and lower damaging blades (8). ) (
9), and then clamp the optical fiber (20) on the clamp stand (e).
(7) includes a guide portion (1G) (11) for positioning. There is a locking mechanism mounting base (15) on the upper surface of the father part gripping plate (+), and the locking mechanism 02) is attached to the rotation axis 03).
It is rotatably mounted. Lower grip plate (2)
There is a lock pin stand (I6) on the bottom of the lock mechanism (■
2) Lock pin (12a) that accepts the hook (12a) at the tip
14) is provided.

(Function) When removing the coating layer of the ribbon-shaped multi-core optical fiber (2o) at once, the optical fiber (2G) is attached to the upper and lower clamp parts (G
) It is gripped and fixed in the thickness direction by (7).

At this time, the guide part (10) (II) for preventing the optical fiber (20) from shifting in the width direction is connected to the scratching blade (8).
(9), so this allows the optical fiber (2o
) can be easily set in Clamp II (if) (7), and by positioning it in the fixed position,
The damaging blades (8) and (3) are now perpendicular to the optical fiber (20).

In order for the scratching blades (8) (9) to cut into the coating layer of the optical fiber (2o) in just the right amount, the optical fiber glass (21
) is the diameter of d1, and the thickness of the optical fiber (20) is 1. In this case, the spacing between the scratching blades (8) and (9) is set so that t>:d+α, and the amount of cut from one side is (t+
-d)÷2-β. For this purpose, a wound blade (8
) A gap plate is inserted between (9) and has a thickness of t2. Further, the lower clamp part (7) is provided with an optical fiber setting groove, the depth of which is set to (t+-d)÷2-β.

By doing so, the coating layer can be removed without damaging the optical fiber glass.

When removing the coating, the optical fiber (20) is clamped between the upper and lower clamp parts (6) ()) and the locking mechanism (12) is locked, so that the optical fiber (20) is secured to the upper and lower clamp parts (6) (
)) and receives surface pressure, which tries to hold the coating with frictional force, preventing stress from concentrating on the cutting edge of the scratching blade (8) and (9), reducing wear and damage to the blade. do.

Therefore, it is desirable that the surfaces of the clamp parts (6) and (7) be made of a shape and material with high frictional resistance, such as a rubber elastic body or a file.

In this way, the optical fiber (20) is connected to the upper and lower clamp parts (6
)()), as shown in FIG. 4, by moving the coating remover of the present invention in the direction of the arrow in the figure.
The coating layer is easily removed all at once.

In addition, in order to improve the cutting edge of the scratching blades (8) and (9), a trench (l) is placed near the scratching blades (8) and (9).
is provided so that the coating removal H can escape.

When the coating layer has been removed as described above, the lock mechanism 02) is unlocked, the upper grip plate (1) is opened, and the removed coating layer is taken out, as shown in FIG. This locking mechanism (12) is not limited to the structure shown in the drawings, but may be any mechanism that can secure the clamping of the optical fiber.

(Effects of the Invention) As explained above, according to the coating remover of the present invention, it is possible to easily and safely remove the coating layer of a ribbon-shaped multi-core optical fiber with strong adhesion between the optical fiber glass and the coating layer. Can be implemented.

[Brief explanation of the drawing]

Fig. 1 is an explanation of a specific example of the coating remover of the present invention, and is a top view of the state in which the upper and lower gripping plates are locked by the locking mechanism (Fig. 1A).
and a side view (exit in the figure). FIG. 2 is a side view of the soft part of the coating remover of the present invention with the locking mechanism released and the upper gripping plate opened. FIG. 3 is a cross-sectional view of an example of a ribbon multi-core optical fiber to which the coating remover of the present invention is applied. FIG. 4 is an explanatory diagram of the concept of removing the coating layer at once using the coating remover of the present invention. DESCRIPTION OF SYMBOLS 1... Lower gripping plate, 2... Lower gripping plate, 3... Rotating shaft, 6... L P'lS clamp part, 7... Lower clamp part, 8, 9... Damaging blade, 10... Upper guide, 11... Lower guide, I2... Lock mechanism,
+3... Rotation axis, +4... Lock pin, +5...
Lock mechanism mounting base, 1B...Lock pin base. Brown 1 +7 (b)

Claims (1)

[Claims] (1) Coating layer of ribbon-shaped multi-core optical fiber in which multiple optical fiber cores each having a coating layer provided on the optical fiber glass are arranged adjacent to each other on a plane and a common outer coating layer is formed on them. A coating remover for removing the coating by removing the coating, comprising upper and lower clamp parts for the optical fiber, a pair of damaging blades, and a guide part for the optical fiber on opposing surfaces of upper and lower grip plates configured to be openable and closable by a rotating shaft, and A coating remover for a ribbon-shaped multi-core optical fiber, characterized in that it is equipped with a locking mechanism for locking the upper and lower gripping plates.