JPH0664207U - Optical fiber coating remover - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an optical fiber coating removing device capable of easily removing a protective coating layer of a bare optical fiber of an optical fiber with high accuracy and high reproducibility. To do. An optical fiber holding block and an optical fiber coating layer cutting blade structure are provided. The optical fiber holding block has a linear through hole for accommodating and holding an optical fiber, and A blade holder having a columnar body rotatable about a central axis, wherein the blade body structure is disposed on one end face of the columnar body, and a pair of blade bodies held thereby, An optical fiber coating removing device, comprising: a displacing means for displacing a holder holding a blade body back and forth at a substantially right angle with respect to a central axis of the linear through hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention easily removes the optical fiber protective coating with high precision and high reproducibility without damaging the bare optical fiber of the optical fiber, for example, when processing the end portion of the optical fiber. The present invention relates to an optical fiber coating removing device for.

[0002]

[Prior art]

 An optical fiber consists of a bare optical fiber and a protective coating layer that covers and protects the bare optical fiber. The protective coating layer directly coats the bare optical fiber and the protective coating layer that covers the bare optical fiber. And a secondary coating layer covering the buffer layer.

When connecting the above optical fibers, it is necessary to remove the coating layer at the connection end of the optical fiber to expose the connection end of the bare optical fiber. The conventional device for cutting and removing the coating layer at the end of the optical fiber has a groove for fixing and fixing the optical fiber from the covering layer, and a semicircular cutting for cutting and removing the coating layer at the end of the optical fiber. And a blade portion having a blade. In the coating layer removing operation using this device, the end portion of the optical fiber is grasped and fixed by the groove, and the blade portion is pressed against it to cut only the coating layer. Pull out and remove from the optical fiber.

Such a conventional device has the advantages that the device configuration is simple and inexpensive, and that it is easy to operate. However, with this conventional device, the precision processing of the semi-circular cutting blade tends to vary, the stability and precision of the blade engagement mechanism are low, and the cutting performance of the blade gradually deteriorates during use. However, there is a problem in that the product yield and industrial reliability are low.

For example, in a conventional device, the optical fiber is often not set in a proper positional relationship with the blade, or the blade is misaligned during use, which often occurs. In such a case, the bare optical fiber may be damaged during the coating layer cutting operation, or the blade may be damaged by the bare optical fiber. This causes problems such as an abnormal increase in pulling force.

Various types of optical fiber coating layer removing devices and methods have been developed to solve the above-mentioned problems. Due to their configuration, it is suitable to be used by installing them on a desk, but the operator It was unsuitable for hand-held operation.

[0007]

[Problems to be solved by the device]

 The present invention allows the optical fiber coating to be removed with high precision and high reproducibility without damaging the bare optical fiber, and thus is highly reliable and manipulable by the operator. It is intended to provide an optical fiber coating removing device.

[0008]

[Means for Solving the Problems]

 The present inventors have formed a linear through hole in the columnar body for holding the optical fiber so that the optical fiber is linearly accommodated and held, and the columnar body is provided with the central axis of the linear through hole. And a blade structure for cutting the optical fiber coating is arranged on one end face of this columnar body, and the blade body of this blade structure, together with its holder, is connected to the linear through hole described above. We have succeeded in solving the above-mentioned problems by making the displacement reciprocable in a direction substantially perpendicular to the central axis of the.

That is, the optical fiber coating removing device according to the present invention holds a holding block for holding an optical fiber, which is made up of a bare optical fiber and a protective coating layer covering the bare optical fiber, and is held by the holding block. And a blade structure for cutting and removing the protective coating layer of the optical fiber, wherein the holding block has a columnar body having a linear through hole capable of accommodating and holding the optical fiber, and the columnar body is The blade structure is rotatable about the central axis of the linear through hole, and the blade structure is disposed on one end face of the columnar body, and is held by the blade body holder, and A pair of blades for cutting the protective coating layer of the optical fiber portion extending outwardly from the linear through hole of the body and a holder holding the blade are attached to the linear through hole. On the central axis Shihoho at right angles, and a displacement means for displacing back and forth, it is characterized in.

In the optical fiber coating removing apparatus of the present invention, the holding block fixes the optical fiber housed in the linear through hole of the columnar body to the columnar body, and the columnar body. It may have a supporting means for rotatably supporting it.

In the optical fiber holding block of the optical fiber coating removing device of the present invention, it is preferable that the columnar body is provided with rotation adjusting means for defining a rotation angle thereof.

Further, in the blade structure of the optical fiber coating removing apparatus of the present invention, the holder has a hole extending parallel to the displacement direction, and the displacement means is inserted into the hole of the holder. A holder having a support rod, a base for supporting the support rod, and a spring arranged at the base of the support rod, and holding the blade body, mounts the spring along the support rod. The holder may be able to be pushed down while being compressed, and by releasing this pushing force, the holder can be pushed up by the spring and returned to the old position.

[0013]

[Action]

 An outline of an example of the optical fiber coating removing apparatus of the present invention is shown in FIG. In FIG. 1, an optical fiber coating removing device 1 has an optical fiber holding block 2 and a blade structure 3. The optical fiber holding block 2 has a columnar body 4, and a linear through hole 5 is formed in the columnar body 4 along the length direction thereof. When the optical fiber 6 is inserted into the linear through hole 5, the inserted portion is held linearly. The columnar body 4 is preferably a columnar body, but is not limited to this. A blade structure 3 is arranged on or near one end face 7 of the columnar body 4, and the blade structure 3 includes a blade 8 for cutting an optical fiber coating, and this blade. It has a blade holder 9 for holding and fixing the body 8.

The columnar body 4 of the optical fiber holding block 2 rotates an angle of at least 90 degrees around the central axis of the linear through hole 5 while holding and holding the optical fiber in the linear through hole 5. It is possible. Further, the cutting blade member 8 of the blade structure 3 together with the blade holder 9 holding it is displaced back and forth in a direction substantially perpendicular to the central axis of the linear through hole 5 (see FIG. 1). Is up and down).

In FIG. 1, the cutting blade member 8 is displaced downward together with the blade holder that holds the cutting blade member 8 to extend outward from the linear through hole 5 of the columnar body 4 of the optical fiber 6. It is possible to cut the coating layer of the portion that is being cut in a direction substantially perpendicular to the central axis of the linear through hole 5, and when this cutting is completed, the cutting blade member 8 together with the blade holder 9 are cut. By displacing it upward, it can be returned to a position separated from the optical fiber 6.

Next, the columnar body 4 holding the optical fiber 6 is rotated by a predetermined angle, at least 90 degrees, around the central axis of the linear through hole 5. The cutting operation similar to the above is performed by the blade structure 3 on the coating layer of the optical fiber 6 rotated by this angle. Then, the coating layer is subjected to the cutting operation in the mutually different portions from the two directions intersecting with each other, and the coating layer is easily removed from the bare optical fiber.

To remove the cut coating layer, the optical fiber that has been subjected to the above cutting operation is taken out from the device, both sides of the cutting point are grasped, and if this is pulled out, the end of the optical fiber is removed. The coating layer is removed from the bare optical fiber. Alternatively, when the final cutting operation is completed, the optical fiber end is pulled out from the straight through hole while the blade of the cutting blade member is inserted into the coating layer of the optical fiber. The coating layer of can be removed.

FIG. 2 shows an example of the optical fiber holding block of the present invention. The optical fiber holding block 10 includes a columnar body (columnar body) 11 and end supports 12 and 13 for holding the columnar body 11 at both left and right ends thereof, and columnar bodies as support means for the columnar body 11. 4 and a rotation adjusting collar 14 for adjusting the rotation angle.

The both-end supports 12 and 13 have through holes 15 and 16, respectively. Both ends of the columnar body 11 are inserted into the through holes 15 and 16, and the columnar body 11 is rotatably supported. Has a linear through hole 5 extending in its length direction. When the optical fiber is inserted into the linear through hole, one or more fixing screws 17 may be inserted from the peripheral surface of the columnar body 11 toward the linear through hole to fix the optical fiber. Instead of this screw, a clip structure may be arranged at the opening of the linear through hole on the end face of the columnar body, and thereby the optical fiber may be held and fixed.

In FIG. 2, the rotation angle of the columnar body 11 is appropriately defined, and in order to prevent the columnar body 11 from being laterally displaced along the through holes 15 and 16 of the support members 12 and 13 at both ends. Then, the columnar body 11 is provided with a rotation adjusting color 14 as shown in FIGS. 2 and 3, for example. The rotation adjusting collar 14 may be attached to the inside of the left end support (FIG. 2) or may be attached to the outside. The rotation adjusting collar 14 has a notch at a predetermined angle (generally 90 degrees), and a stopper 18 is attached to the side surface of the left end support member so that the stopper 18 contacts both ends of the notch of the colorer 14. Is located in.

By rotating the columnar body from the state where the stopper 18 is in contact with one of the cutout ends of the collar 14 to the other side, the columnar body is thereby defined by the notch portion of the collar 14. It can be rotated by the specified angle. The collar 14 and the columnar body 11 may be coupled by screwing or adhesive bonding. The stopper 18 can be formed by, for example, screwing a screw into a predetermined position on the side surface of the support. In the above description, the collar 14 is arranged on the left side end support 12 side, but of course, it may be arranged on the right side end support 13 side.

The blade structure includes a cutting blade member for cutting the coating layer of the optical fiber at a substantially right angle to the length axis of the optical fiber (that is, the central axis of the linear through hole of the columnar body). The cutting blade member is provided with a holder for fixing and holding the cutting blade member, and the cutting blade member is composed of a pair of blade bodies arranged to face each other on the same plane. Further, this blade structure has a displacement means for reciprocating the holder, which holds the cutting blade member, in a direction substantially perpendicular to the central axis of the linear through hole of the columnar body. .

4A and 4B show an example of the blade structure of the present invention. In FIG. 4A (front view) and FIG. 4B (side view), the blade holder 19 has a space 20 for mounting the blade that is open in one direction, that is, in FIG. An end face of the columnar body 11 (FIG. 2) is arranged in the space 20, and a pair of blades 22 is arranged so as to cut the coating layer of the optical fiber 21 extending outward from the end face. That is, if the holder 19 is pushed downward with respect to the optical fiber 21, the coating layer of the optical fiber 21 can be cut by the pair of blades 22, and the holder 19 can be returned to its original position. For example, the blade 22 is separated from the optical fiber 21.

In FIGS. 4A and 4B, the holder 19 is formed with two holes 23 (may be through holes) extending from the lower surface thereof in parallel with the displacement direction of the holder 19. Also, as shown in FIG. 5, two support rods 25 supported by the base 24 are provided on the base 24, and a spring 26 is arranged at the root portion of the support rods so as to perform the displacement procedure. Make up. The base 24 may be connected to the end support 13 as shown in FIG. When the supporting rod 25 of the displacement means as shown in FIG. 5 is inserted into the hole 23 of the holder 19 shown in FIGS. 4A and 4B, the holder 19 is moved by the spring 26 to a predetermined height. Held in. If the holder 19 is pushed down and the spring 26 is compressed, the blade 22 is also displaced downward, and the coating layer of the optical fiber 21 can be cut. Next, when the downward pressing force on the holder 19 is released, the holder 19 is pushed up by the spring 26, and the blade body 22 separates from the optical fiber 21 and returns to the old position. In the displacement means of the present invention, the number of the support rods 25 and the holes 23 is not limited and may be one or more, but is preferably two or more.

In the device of the present invention, the blade can be fixed to the holder by any suitable means such as screwing or adhesive bonding. The geometrical dimensions and the arrangement (parallel blade arrangement, diagonal blade arrangement) and the like of the pair of blades can be appropriately set as desired.

[0026]

[Effect of device]

 The optical fiber coating removing device of the present invention can remove the protective coating layer of a bare optical fiber of an optical fiber with high reliability by cutting the protective coating layer in two or more directions by a simple operation. You can

[Brief description of drawings]

FIG. 1 is an explanatory view showing an outline of an example of an optical fiber coating removing device of the present invention.

FIG. 2 is an explanatory diagram showing the configuration and arrangement of an example of an optical fiber holding block of the device of the present invention.

FIG. 3 is an example of a rotation adjustment collar used to rotatably hold a columnar body on an end support and adjust the amount of rotation of the columnar body in an optical fiber holding block of the device of the present invention. FIG.

FIG. 4A shows a blade structure of the device of the present invention,
The front explanatory view showing an example of the holder holding a pair of blades. 4B is a side view of the holder shown in FIG. 4A.

FIG. 5 shows a blade structure of the device of the present invention,
Explanatory drawing which shows an example of the means which displaces the holder holding the pair of blades.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Optical fiber coating removing device 2, 10 ... Optical fiber holding block 3 ... Blade structure 4,11 ... Columnar body 5 ... Linear through hole 6,21 ... Optical fiber 7 ... One end surface of columnar body 8, 22 ... Blade 9 ... Blade holder 12, 13 ... End support 14 ... Rotation adjustment collar 15, 16 ... Through hole 17 ... Screw 18 ... Stopper 19 ... Blade holder 20 ... Space 23 ... Hole 24 ... Base 25 ... Support Rod 26 ... Spring

Claims (4)

[Scope of utility model registration request] 1. A holding block for holding an optical fiber, which comprises a bare optical fiber and a protective coating layer covering the bare optical fiber, and a blade for cutting and removing the protective coating layer of the optical fiber held by the holding block. With a body structure, the holding block has a columnar body having a linear through hole capable of accommodating and holding the optical fiber, the columnar body around the central axis of the linear through hole, Is rotatable,
Then, the blade structure is provided with a blade holder arranged on one end face of the columnar body, and the light which is held by the blade body holder and extends outward from the linear through hole of the columnar body. A pair of blades for cutting the protective coating layer of the fiber portion,
An optical fiber coating removing device, comprising: a displacement means for displacing a blade holder holding the blade body back and forth at a substantially right angle with respect to a central axis of the linear through hole. 2. A fixing means for fixing the optical fiber housed in the linear through hole of the columnar body to the columnar body by the optical fiber holding block, and a supporting means for rotatably supporting the columnar body. The optical fiber coating stripping device according to claim 1, further comprising: 3. In the optical fiber holding block,
The optical fiber coating removing device according to claim 1, wherein the columnar body is provided with a rotation adjusting means that defines a rotation angle thereof. 4. The holder of the blade structure has a hole extending parallel to the displacement direction, and the displacement means supports the support rod inserted into the hole of the holder and the support rod. A holder having a base and a spring arranged at the base of the support rod and holding the blade can be pushed down along the support rod while compressing the spring. The optical fiber coating removing device according to claim 1, wherein the holder can be pushed up by the spring and returned to the old position by releasing the.