JPH06100688B2 - Optical fiber coating removal mechanism - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an optical fiber core wire sheath removing mechanism that collectively removes the coating of a pair of optical fiber core wires. It constitutes a section.

(Summary of the Invention) The present invention provides a pair of optical fiber cores with a pair of optical fiber cores in which the ends of the pair of optical fiber cores are opposed to each other in parallel and the lengths in the axial direction overlap each other. A pair of optical fiber core wire coated grips for holding the wires at the same time, and a cutting blade disposed between the optical fiber core wire coated grips and cutting only the optical fiber core wire coatings. By providing a moving mechanism for moving the pair of coating gripping portions in opposite directions to each other in the axial direction of the optical fiber cores, the coatings of the two optical fiber cores can be removed at the same time. It provides the mechanism of.

(Problems to be Solved by Prior Art and Invention) When connecting optical fiber core wires, as a pre-treatment,
It is essential to remove the coating on the cord.

In the prior art, an optical fiber peeling device was used for each core wire (for example, the conventional example of FIG. 14 shown in Japanese Patent Application No. 60-79535 “Optical Fiber Coating Remover”). In this case, conventionally, a large work space is required because it relies on manual work, and the method of applying the force at the time of removing the coating differs depending on the operator, and the optical fiber is broken or the coating is not completely removed. There was a drawback that Therefore, various methods for removing the coating using some kind of apparatus have been proposed (for example, Japanese Patent No. 1153354 “coating removing apparatus”, Japanese Patent Application No. 58-217371 “terminal forming apparatus for optical fiber”, No. 59-120641, "tape cable sheath removing device", etc., which individually treat a pair of optical fiber cores to be connected, one by one. , Japanese Patent Application No. 59-182471 "Automatic fusion splicer for optical fibers"), the drawback is that if two removing devices are prepared, the size of the entire device becomes large. However, there is a drawback that the operation time becomes long when the coating is sequentially removed.

(Means for Solving the Problems) The present invention has been proposed in order to improve the above-mentioned drawbacks, and the coating of the two optical fiber cores to be connected is collectively removed to perform a fully automatic connection. An object is to provide a simple and compact coating removing mechanism in an apparatus.

The present invention is mainly characterized in that the coatings of two optical fiber core wires to be connected are collectively removed, and the conventional technique removes the coating of each optical fiber core wire. They differ in points.

Next, examples of the present invention will be described. It is needless to say that the embodiment is merely an example, and various modifications and improvements can be made without departing from the spirit of the present invention.

[Embodiment 1] FIG. 1 shows a first embodiment of the present invention. FIG. 3A is a plan view and FIG. 1B is a side view. In the figure, 1 and 1'denotes a pair of optical fiber core wires, 2 and 3 a pair of coating grips, and 4 a coating cutting blade.

In this embodiment, a pair of optical fiber core wires 1 and 1 ′ are opposed to each other in parallel, and the optical fiber core wire is gripped by the pair of coating gripping portions 2 and 3 at both ends of the overlapping portions in the length direction. In this embodiment, the upper substrate 22, 32 and the lower substrate 21, 31 of the gripping portion are superposed on each other to hold the coating, but other gripping methods may be used as long as the structure has a gripping force larger than the coating removing force. I don't care.

FIG. 2 shows a sectional view of the optical fiber along the cutting blade. In the drawing, 41 and 42 are cutting blades, 5 and 5'are optical fibers,
6'denotes a coating. That is, the cutting blade is divided into upper and lower parts, and a gap is formed at the cutting edge portion so as not to cut the core of the optical fiber.

Next, the operation of the device of the present invention will be described.

The cutting blades 41, 42 are located in the middle of the coated gripping portions 2, 3, but when setting the optical fiber core wires 1, 1 ′ to the coated gripping portions 2, 3, the cutting blades 41, 42 are moved up and down. To evacuate. Then, when the cutting edges of the cutting blades 41 and 42 are engaged with each other, the optical fiber of the optical fiber line is not cut, and only the coating is cut. Then, by moving the pair of coating gripping portions 2, 3 in the directions opposite to each other in the axial direction of the optical fiber core wires 1, 1 ', the coating of the optical fiber core wire can be removed as shown in FIG. The moving distance of the coating gripping portions 2 and 3 may be set according to the required length of coating removal. In the above-mentioned operation, if the coating gripping portions 2 and 3 are provided with a parallel drive unit (for example, a motor and a gear, a hydraulic or pneumatic cylinder), the coating gripping portions can be easily moved in the axial direction and in the opposite direction. be able to. Also,
The configuration of the gear allows the left and right grips to be driven simultaneously by one drive.

As described above, according to the present invention, since the pair of optical fiber core wires can be collectively coated and removed, the size and the driving mechanism can be compared with the conventional case where a pair of coating removal mechanisms is provided for each optical fiber core wire. Since it can be configured in almost half, etc., a compact and simple coating removing mechanism can be obtained even when incorporated in a connecting device.

[Embodiment 2] FIG. 4 shows a second embodiment of the present invention. (A) is a plan view before coating removal, (b) is a plan view after coating removal,
FIG. 6C is a sectional view taken along the line AA ′ of FIG.

In the figure, reference numerals 1 and 1'indicate the optical fiber core wire, 2 and 3 indicate coating gripping portions, and 7'and 7 indicate cutting blades on the right and left sides, respectively. In addition, the cutting blades are configured to be separable upward and downward.

The structure of the cutting blade 7'is separable into an upper side 72 'and a lower side 71' as shown in Fig. (C), and the cutting blade 7 has a similar structure although not shown. As described in the first embodiment, the cutting edge is formed with a void so that only the coating can be cut without cutting the optical fiber of the optical fiber line.

The feature of this embodiment is that the cutting blade 7 ′ is configured to move together with the coating gripper 2 and the cutting blade 7 is configured to move together with the coating gripper 3.

Now, in the state shown in FIG. 4 (a), the cutting blades 7,
After cutting only the coating of the optical fiber core wires 1 and 1'by 7 ', the coating gripping portion 2 is moved in the direction of arrow A and the coating gripping portion 3 is moved in the direction of arrow B, as shown in FIG. The state shown in (3) is obtained, and the coating is removed. In this case, the cutting blade 7 ′ moves together with the covering gripper 2 and the cutting blade 7 moves together with the covering gripper 3.

In this embodiment, since the cutting blade and the coating gripping portion are integrated, the coating removing mechanism can be simplified and the operation time can be shortened.

(Effects of the Invention) As described above, it is necessary to remove the coating of a pair (two) of optical fiber cores to connect the optical fiber cores.
According to the present invention, by forming a mechanism for removing the coating of two simultaneously, there is an effect that the coating can be removed in a small size, easily and in a short time.

Further, since the two optical fibers are arranged and fixed in parallel even after the coating is removed, it is possible to collectively cut even in the optical fiber connecting step, which is the next step after the coating removal in the optical fiber connecting step. It has the effect of

[Brief description of drawings]

FIG. 1 shows the first embodiment of the present invention, FIG. 2 shows the structure of the cutting blade in the first embodiment, and FIG. 3 shows the state after the coating removal in the first embodiment. . FIG. 4 shows a second embodiment of the present invention. 1,1 ′ …… Optical fiber core 2,3 …… Coating gripping part 22,32 …… Upper substrate of gripping part 21,31 …… Lower substrate of gripping part 4 …… Cutting blade 41 …… Under cutting blade Blade 42 …… Upper blade of cutting blade 7 ′ …… Left side cutting blade 7 …… Right side cutting blade 71 ′ …… Lower blade of left side cutting blade 72 ′ …… Upper blade of right side cutting blade 5,5 ′ …… Optical fiber 6,6 ′ …… Coating of optical fiber core wire

Claims (2)

[Claims] 1. A set of optical fiber cores that simultaneously hold a pair of optical fiber core wires in a state where end portions of the pair of optical fiber core wires are opposed to each other in parallel and the lengths in the axial direction overlap each other. A coating blade for the wire and a cutting blade that is disposed between the fiber coating and the optical fiber core, and cuts only the fiber optical fiber coating;
And a moving mechanism for moving the optical fiber core wires in opposite directions to each other in the axial direction. 2. The optical fiber coating removal mechanism according to claim 1, wherein a cutting blade is attached to at least one of the coating gripping portions.